[ADD] add statsd exporter module to node

Makefile

@@ -112,6 +112,7 @@ run-node:build-node
 	 --run-mode=master --kube-conf=`pwd`/test/admin.kubeconfig \
 	 --nodeid-file=`pwd`/test/host_id.conf \
 	 --static-task-path=`pwd`/test/tasks \
+	 --statsd.mapping-config=`pwd`/test/mapper.yml \
 	 --log-level=debug
 
 doc: ## build the docs 

cmd/README.md

@@ -0,0 +1,19 @@
+# Component Description
+
+## API
+
+## BUILDER
+
+## ENTRANCE
+
+## EVENTLOG
+
+## GRCTL
+
+## MQ
+
+## NODE
+
+## WEBCLI
+
+## WORKER

cmd/node/option/conf.go

@@ -117,7 +117,17 @@ type Conf struct {
 	// 默认 300
 	LockTTL int64
 
-	Etcd client.Config
+	Etcd         client.Config
+	StatsdConfig StatsdConfig
+}
+
+//StatsdConfig StatsdConfig
+type StatsdConfig struct {
+	StatsdListenAddress string
+	StatsdListenUDP     string
+	StatsdListenTCP     string
+	MappingConfig       string
+	ReadBuffer          int
 }
 
 //AddFlags AddFlags
@@ -156,6 +166,11 @@ func (a *Conf) AddFlags(fs *pflag.FlagSet) {
 	//fs.StringSliceVar(&a.EventServerAddress, "event-servers", []string{"http://127.0.0.1:6363"}, "event message server address.")
 	fs.StringVar(&a.DBType, "db-type", "mysql", "db type mysql or etcd")
 	fs.StringVar(&a.DBConnectionInfo, "mysql", "admin:admin@tcp(127.0.0.1:3306)/region", "mysql db connection info")
+	fs.StringVar(&a.StatsdConfig.StatsdListenAddress, "statsd.listen-address", "", "The UDP address on which to receive statsd metric lines. DEPRECATED, use statsd.listen-udp instead.")
+	fs.StringVar(&a.StatsdConfig.StatsdListenUDP, "statsd.listen-udp", ":9125", "The UDP address on which to receive statsd metric lines. \"\" disables it.")
+	fs.StringVar(&a.StatsdConfig.StatsdListenTCP, "statsd.listen-tcp", ":9125", "The TCP address on which to receive statsd metric lines. \"\" disables it.")
+	fs.StringVar(&a.StatsdConfig.MappingConfig, "statsd.mapping-config", "", "Metric mapping configuration file name.")
+	fs.IntVar(&a.StatsdConfig.ReadBuffer, "statsd.read-buffer", 0, "Size (in bytes) of the operating system's transmit read buffer associated with the UDP connection. Please make sure the kernel parameters net.core.rmem_max is set to a value greater than the value specified.")
 }
 
 //SetLog 设置log

cmd/node/server/server.go

@@ -28,6 +28,8 @@ import (
 	"github.com/goodrain/rainbond/pkg/node/core/store"
 	"github.com/goodrain/rainbond/pkg/node/masterserver"
 	"github.com/goodrain/rainbond/pkg/node/nodeserver"
+	"github.com/goodrain/rainbond/pkg/node/statsd"
+	"github.com/prometheus/client_golang/prometheus"
 
 	"github.com/Sirupsen/logrus"
 
@@ -86,8 +88,16 @@ func Run(c *option.Conf) error {
 		}
 		event.On(event.EXIT, ms.Stop)
 	}
+	//statsd exporter
+	registry := prometheus.NewRegistry()
+	exporter := statsd.CreateExporter(c.StatsdConfig, registry)
+	if err := exporter.Start(); err != nil {
+		logrus.Errorf("start statsd exporter server error,%s", err.Error())
+		return err
+	}
+
 	//启动API服务
-	apiManager := api.NewManager(*s.Conf, s.HostNode, ms)
+	apiManager := api.NewManager(*s.Conf, s.HostNode, ms, exporter)
 	apiManager.Start(errChan)
 	defer apiManager.Stop()
 

hack/contrib/docker/chaos/plugins/build_work.py

@@ -330,7 +330,7 @@ class RepoBuilder():
         h = self.user_cs_client
         try:
             h.update_service(self.service_id, json.dumps(update_items))
-            self.region_client.update_service_region(self.service_id,json.dumps(update_items))
+            self.region_client.update_service_region(self.service_id, json.dumps(update_items))
         except h.CallApiError, e:
             self.log.error(
                 "网络异常，更新应用镜像名称失败. {}".format(e.message),

pkg/node/api/manager.go

@@ -24,6 +24,9 @@ import (
 	"time"
 
 	"github.com/goodrain/rainbond/pkg/node/masterserver"
+	"github.com/goodrain/rainbond/pkg/node/statsd"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 
 	"github.com/goodrain/rainbond/pkg/node/api/controller"
 	"github.com/goodrain/rainbond/pkg/node/api/model"
@@ -44,28 +47,59 @@ import (
 
 //Manager api manager
 type Manager struct {
-	ctx    context.Context
-	cancel context.CancelFunc
-	conf   option.Conf
-	router *chi.Mux
-	node   *model.HostNode
-	lID    client.LeaseID // lease id
-	ms     *masterserver.MasterServer
+	ctx      context.Context
+	cancel   context.CancelFunc
+	conf     option.Conf
+	router   *chi.Mux
+	node     *model.HostNode
+	lID      client.LeaseID // lease id
+	ms       *masterserver.MasterServer
+	exporter *statsd.Exporter
 }
 
 //NewManager api manager
-func NewManager(c option.Conf, node *model.HostNode, ms *masterserver.MasterServer) *Manager {
+func NewManager(c option.Conf, node *model.HostNode, ms *masterserver.MasterServer, exporter *statsd.Exporter) *Manager {
 	r := router.Routers(c.RunMode)
 	ctx, cancel := context.WithCancel(context.Background())
 	controller.Init(&c, ms)
-	return &Manager{
-		ctx:    ctx,
-		cancel: cancel,
-		conf:   c,
-		router: r,
-		node:   node,
-		ms:     ms,
+	m := &Manager{
+		ctx:      ctx,
+		cancel:   cancel,
+		conf:     c,
+		router:   r,
+		node:     node,
+		ms:       ms,
+		exporter: exporter,
 	}
+	m.router.Get("/app/metrics", m.HandleStatsd)
+	m.router.Get("/-/statsdreload", m.ReloadStatsdMappConfig)
+	return m
+}
+
+//ReloadStatsdMappConfig ReloadStatsdMappConfig
+func (m *Manager) ReloadStatsdMappConfig(w http.ResponseWriter, r *http.Request) {
+	if err := m.exporter.ReloadConfig(); err != nil {
+		w.Write([]byte(err.Error()))
+		w.WriteHeader(500)
+	} else {
+		w.Write([]byte("Success reload"))
+		w.WriteHeader(200)
+	}
+}
+
+//HandleStatsd statsd handle
+func (m *Manager) HandleStatsd(w http.ResponseWriter, r *http.Request) {
+	gatherers := prometheus.Gatherers{
+		prometheus.DefaultGatherer,
+		m.exporter.GetRegister(),
+	}
+	// Delegate http serving to Prometheus client library, which will call collector.Collect.
+	h := promhttp.HandlerFor(gatherers,
+		promhttp.HandlerOpts{
+			ErrorLog:      logrus.StandardLogger(),
+			ErrorHandling: promhttp.ContinueOnError,
+		})
+	h.ServeHTTP(w, r)
 }
 
 //Start 启动

pkg/node/api/router/router.go

@@ -55,7 +55,7 @@ func Routers(mode string) *chi.Mux {
 			})
 
 			r.Route("/nodes", func(r chi.Router) {
-				r.Get("/fullres",controller.RegionRes)
+				r.Get("/fullres", controller.RegionRes)
 				r.Get("/resources", controller.Resources)
 				r.Get("/capres", controller.CapRes)
 				r.Get("/", controller.GetNodes)
@@ -67,9 +67,9 @@ func Routers(mode string) *chi.Mux {
 				r.Put("/{node_id}/unschedulable", controller.Cordon)
 				r.Put("/{node_id}/reschedulable", controller.UnCordon)
 				r.Put("/{node_id}/labels", controller.PutLabel)
-				r.Post("/{node_id}/down", controller.DownNode) //节点下线
-				r.Post("/{node_id}/up", controller.UpNode)     //节点上线
-				r.Get("/{node_id}/instance", controller.Instances)     //节点上线
+				r.Post("/{node_id}/down", controller.DownNode)     //节点下线
+				r.Post("/{node_id}/up", controller.UpNode)         //节点上线
+				r.Get("/{node_id}/instance", controller.Instances) //节点上线
 
 				//历史API
 				r.Get("/{node}/details", controller.GetNodeDetails)
@@ -114,6 +114,6 @@ func Routers(mode string) *chi.Mux {
 		r.Put("/-/taskreload", controller.ReloadStaticTasks)
 	}
 	//节点监控
-	r.Get("/metrics", controller.NodeExporter)
+	r.Get("/node/metrics", controller.NodeExporter)
 	return r
 }

pkg/node/masterserver/task_engine.go

@@ -855,7 +855,7 @@ func (t *TaskEngine) HandleJobRecord() {
 		case <-t.ctx.Done():
 			return
 		case event := <-ch:
-			if err:=event.Err();err!=nil{
+			if err := event.Err(); err != nil {
 
 			}
 			for _, ev := range event.Events {

pkg/node/statsd/exporter/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      and distribution as defined by Sections 1 through 9 of this document.
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pkg/node/statsd/exporter/Makefile

@@ -0,0 +1,60 @@
+# Copyright 2013 The Prometheus Authors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+GO    := GO15VENDOREXPERIMENT=1 go
+PROMU := $(GOPATH)/bin/promu
+pkgs   = $(shell $(GO) list ./... | grep -v /vendor/)
+
+PREFIX                  ?= $(shell pwd)
+BIN_DIR                 ?= $(shell pwd)
+DOCKER_IMAGE_NAME       ?= statsd-exporter
+DOCKER_IMAGE_TAG        ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
+
+
+all: format build test
+
+style:
+	@echo ">> checking code style"
+	@! gofmt -d $(shell find . -path ./vendor -prune -o -name '*.go' -print) | grep '^'
+
+test:
+	@echo ">> running tests"
+	@$(GO) test -short $(pkgs)
+
+format:
+	@echo ">> formatting code"
+	@$(GO) fmt $(pkgs)
+
+vet:
+	@echo ">> vetting code"
+	@$(GO) vet $(pkgs)
+
+build: promu
+	@echo ">> building binaries"
+	@$(PROMU) build --prefix $(PREFIX)
+
+tarball: promu
+	@echo ">> building release tarball"
+	@$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
+
+docker:
+	@echo ">> building docker image"
+	@docker build -t "$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" .
+
+promu:
+	@GOOS=$(shell uname -s | tr A-Z a-z) \
+		GOARCH=$(subst x86_64,amd64,$(patsubst i%86,386,$(shell uname -m))) \
+		$(GO) get -u github.com/prometheus/promu
+
+
+.PHONY: all style format build test vet tarball docker promu

pkg/node/statsd/exporter/exporter.go

@@ -0,0 +1,595 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package exporter
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"hash/fnv"
+	"io"
+	"net"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/common/log"
+	"github.com/prometheus/common/model"
+)
+
+const (
+	defaultHelp = "Metric autogenerated by statsd_exporter."
+	regErrF     = "A change of configuration created inconsistent metrics for " +
+		"%q. You have to restart the statsd_exporter, and you should " +
+		"consider the effects on your monitoring setup. Error: %s"
+)
+
+var (
+	illegalCharsRE = regexp.MustCompile(`[^a-zA-Z0-9_]`)
+
+	hash   = fnv.New64a()
+	strBuf bytes.Buffer // Used for hashing.
+	intBuf = make([]byte, 8)
+)
+
+// hashNameAndLabels returns a hash value of the provided name string and all
+// the label names and values in the provided labels map.
+//
+// Not safe for concurrent use! (Uses a shared buffer and hasher to save on
+// allocations.)
+func hashNameAndLabels(name string, labels prometheus.Labels) uint64 {
+	hash.Reset()
+	strBuf.Reset()
+	strBuf.WriteString(name)
+	hash.Write(strBuf.Bytes())
+	binary.BigEndian.PutUint64(intBuf, model.LabelsToSignature(labels))
+	hash.Write(intBuf)
+	return hash.Sum64()
+}
+
+type CounterContainer struct {
+	Elements map[uint64]prometheus.Counter
+	Register prometheus.Registerer
+}
+
+func NewCounterContainer(Register prometheus.Registerer) *CounterContainer {
+	return &CounterContainer{
+		Elements: make(map[uint64]prometheus.Counter),
+		Register: Register,
+	}
+}
+
+func (c *CounterContainer) Get(metricName string, labels prometheus.Labels, help string) (prometheus.Counter, error) {
+	hash := hashNameAndLabels(metricName, labels)
+	counter, ok := c.Elements[hash]
+	if !ok {
+		counter = prometheus.NewCounter(prometheus.CounterOpts{
+			Name:        metricName,
+			Help:        help,
+			ConstLabels: labels,
+		})
+		if err := c.Register.Register(counter); err != nil {
+			return nil, err
+		}
+		c.Elements[hash] = counter
+	}
+	return counter, nil
+}
+
+type GaugeContainer struct {
+	Elements map[uint64]prometheus.Gauge
+	Register prometheus.Registerer
+}
+
+func NewGaugeContainer(Register prometheus.Registerer) *GaugeContainer {
+	return &GaugeContainer{
+		Elements: make(map[uint64]prometheus.Gauge),
+		Register: Register,
+	}
+}
+
+func (c *GaugeContainer) Get(metricName string, labels prometheus.Labels, help string) (prometheus.Gauge, error) {
+	hash := hashNameAndLabels(metricName, labels)
+	gauge, ok := c.Elements[hash]
+	if !ok {
+		gauge = prometheus.NewGauge(prometheus.GaugeOpts{
+			Name:        metricName,
+			Help:        help,
+			ConstLabels: labels,
+		})
+		if err := c.Register.Register(gauge); err != nil {
+			return nil, err
+		}
+		c.Elements[hash] = gauge
+	}
+	return gauge, nil
+}
+
+type SummaryContainer struct {
+	Elements map[uint64]prometheus.Summary
+	Register prometheus.Registerer
+}
+
+func NewSummaryContainer(Register prometheus.Registerer) *SummaryContainer {
+	return &SummaryContainer{
+		Elements: make(map[uint64]prometheus.Summary),
+		Register: Register,
+	}
+}
+
+func (c *SummaryContainer) Get(metricName string, labels prometheus.Labels, help string) (prometheus.Summary, error) {
+	hash := hashNameAndLabels(metricName, labels)
+	summary, ok := c.Elements[hash]
+	if !ok {
+		summary = prometheus.NewSummary(
+			prometheus.SummaryOpts{
+				Name:        metricName,
+				Help:        help,
+				ConstLabels: labels,
+			})
+		if err := c.Register.Register(summary); err != nil {
+			return nil, err
+		}
+		c.Elements[hash] = summary
+	}
+	return summary, nil
+}
+
+type HistogramContainer struct {
+	Elements map[uint64]prometheus.Histogram
+	mapper   *MetricMapper
+	Register prometheus.Registerer
+}
+
+func NewHistogramContainer(mapper *MetricMapper, Register prometheus.Registerer) *HistogramContainer {
+	return &HistogramContainer{
+		Elements: make(map[uint64]prometheus.Histogram),
+		mapper:   mapper,
+		Register: Register,
+	}
+}
+
+func (c *HistogramContainer) Get(metricName string, labels prometheus.Labels, help string, mapping *metricMapping) (prometheus.Histogram, error) {
+	hash := hashNameAndLabels(metricName, labels)
+	histogram, ok := c.Elements[hash]
+	if !ok {
+		buckets := c.mapper.Defaults.Buckets
+		if mapping != nil && mapping.Buckets != nil && len(mapping.Buckets) > 0 {
+			buckets = mapping.Buckets
+		}
+		histogram = prometheus.NewHistogram(
+			prometheus.HistogramOpts{
+				Name:        metricName,
+				Help:        help,
+				ConstLabels: labels,
+				Buckets:     buckets,
+			})
+		c.Elements[hash] = histogram
+		if err := c.Register.Register(histogram); err != nil {
+			return nil, err
+		}
+	}
+	return histogram, nil
+}
+
+type Event interface {
+	MetricName() string
+	Value() float64
+	Labels() map[string]string
+}
+
+type CounterEvent struct {
+	metricName string
+	value      float64
+	labels     map[string]string
+}
+
+func (c *CounterEvent) MetricName() string        { return c.metricName }
+func (c *CounterEvent) Value() float64            { return c.value }
+func (c *CounterEvent) Labels() map[string]string { return c.labels }
+
+type GaugeEvent struct {
+	metricName string
+	value      float64
+	relative   bool
+	labels     map[string]string
+}
+
+func (g *GaugeEvent) MetricName() string        { return g.metricName }
+func (g *GaugeEvent) Value() float64            { return g.value }
+func (c *GaugeEvent) Labels() map[string]string { return c.labels }
+
+type TimerEvent struct {
+	metricName string
+	value      float64
+	labels     map[string]string
+}
+
+func (t *TimerEvent) MetricName() string        { return t.metricName }
+func (t *TimerEvent) Value() float64            { return t.value }
+func (c *TimerEvent) Labels() map[string]string { return c.labels }
+
+type Events []Event
+
+type Exporter struct {
+	Counters   *CounterContainer
+	Gauges     *GaugeContainer
+	Summaries  *SummaryContainer
+	Histograms *HistogramContainer
+	mapper     *MetricMapper
+}
+
+func escapeMetricName(metricName string) string {
+	// If a metric starts with a digit, prepend an underscore.
+	if metricName[0] >= '0' && metricName[0] <= '9' {
+		metricName = "_" + metricName
+	}
+
+	// Replace all illegal metric chars with underscores.
+	metricName = illegalCharsRE.ReplaceAllString(metricName, "_")
+	return metricName
+}
+
+func (b *Exporter) Listen(e <-chan Events) {
+	for {
+		events, ok := <-e
+		if !ok {
+			log.Debug("Channel is closed. Break out of Exporter.Listener.")
+			return
+		}
+		for _, event := range events {
+			var help string
+			metricName := ""
+			prometheusLabels := event.Labels()
+
+			mapping, labels, present := b.mapper.getMapping(event.MetricName())
+			if mapping == nil {
+				mapping = &metricMapping{}
+			}
+			if mapping.HelpText == "" {
+				help = defaultHelp
+			} else {
+				help = mapping.HelpText
+			}
+			if present {
+				metricName = mapping.Name
+				for label, value := range labels {
+					prometheusLabels[label] = value
+				}
+			} else {
+				eventsUnmapped.Inc()
+				metricName = escapeMetricName(event.MetricName())
+			}
+
+			switch ev := event.(type) {
+			case *CounterEvent:
+				// We don't accept negative values for counters. Incrementing the counter with a negative number
+				// will cause the exporter to panic. Instead we will warn and continue to the next event.
+				if event.Value() < 0.0 {
+					log.Debugf("Counter %q is: '%f' (counter must be non-negative value)", metricName, event.Value())
+					eventStats.WithLabelValues("illegal_negative_counter").Inc()
+					continue
+				}
+
+				counter, err := b.Counters.Get(
+					metricName,
+					prometheusLabels,
+					help,
+				)
+				if err == nil {
+					counter.Add(event.Value())
+
+					eventStats.WithLabelValues("counter").Inc()
+				} else {
+					log.Debugf(regErrF, metricName, err)
+					conflictingEventStats.WithLabelValues("counter").Inc()
+				}
+
+			case *GaugeEvent:
+				gauge, err := b.Gauges.Get(
+					metricName,
+					prometheusLabels,
+					help,
+				)
+
+				if err == nil {
+					if ev.relative {
+						gauge.Add(event.Value())
+					} else {
+						gauge.Set(event.Value())
+					}
+
+					eventStats.WithLabelValues("gauge").Inc()
+				} else {
+					log.Debugf(regErrF, metricName, err)
+					conflictingEventStats.WithLabelValues("gauge").Inc()
+				}
+
+			case *TimerEvent:
+				t := timerTypeDefault
+				if mapping != nil {
+					t = mapping.TimerType
+				}
+				if t == timerTypeDefault {
+					t = b.mapper.Defaults.TimerType
+				}
+
+				switch t {
+				case timerTypeHistogram:
+					histogram, err := b.Histograms.Get(
+						metricName,
+						prometheusLabels,
+						help,
+						mapping,
+					)
+					if err == nil {
+						histogram.Observe(event.Value() / 1000) // prometheus presumes seconds, statsd millisecond
+						eventStats.WithLabelValues("timer").Inc()
+					} else {
+						log.Debugf(regErrF, metricName, err)
+						conflictingEventStats.WithLabelValues("timer").Inc()
+					}
+
+				case timerTypeDefault, timerTypeSummary:
+					summary, err := b.Summaries.Get(
+						metricName,
+						prometheusLabels,
+						help,
+					)
+					if err == nil {
+						summary.Observe(event.Value())
+						eventStats.WithLabelValues("timer").Inc()
+					} else {
+						log.Debugf(regErrF, metricName, err)
+						conflictingEventStats.WithLabelValues("timer").Inc()
+					}
+
+				default:
+					panic(fmt.Sprintf("unknown timer type '%s'", t))
+				}
+
+			default:
+				log.Debugln("Unsupported event type")
+				eventStats.WithLabelValues("illegal").Inc()
+			}
+		}
+	}
+}
+
+//NewExporter new exporter
+func NewExporter(mapper *MetricMapper, Register prometheus.Registerer) *Exporter {
+	return &Exporter{
+		Counters:   NewCounterContainer(Register),
+		Gauges:     NewGaugeContainer(Register),
+		Summaries:  NewSummaryContainer(Register),
+		Histograms: NewHistogramContainer(mapper, Register),
+		mapper:     mapper,
+	}
+}
+
+func buildEvent(statType, metric string, value float64, relative bool, labels map[string]string) (Event, error) {
+	switch statType {
+	case "c":
+		return &CounterEvent{
+			metricName: metric,
+			value:      float64(value),
+			labels:     labels,
+		}, nil
+	case "g":
+		return &GaugeEvent{
+			metricName: metric,
+			value:      float64(value),
+			relative:   relative,
+			labels:     labels,
+		}, nil
+	case "ms", "h":
+		return &TimerEvent{
+			metricName: metric,
+			value:      float64(value),
+			labels:     labels,
+		}, nil
+	case "s":
+		return nil, fmt.Errorf("No support for StatsD sets")
+	default:
+		return nil, fmt.Errorf("Bad stat type %s", statType)
+	}
+}
+
+func parseDogStatsDTagsToLabels(component string) map[string]string {
+	labels := map[string]string{}
+	tagsReceived.Inc()
+	tags := strings.Split(component, ",")
+	for _, t := range tags {
+		t = strings.TrimPrefix(t, "#")
+		kv := strings.SplitN(t, ":", 2)
+
+		if len(kv) < 2 || len(kv[1]) == 0 {
+			tagErrors.Inc()
+			log.Debugf("Malformed or empty DogStatsD tag %s in component %s", t, component)
+			continue
+		}
+
+		labels[escapeMetricName(kv[0])] = kv[1]
+	}
+	return labels
+}
+
+func lineToEvents(line string) Events {
+	events := Events{}
+	if line == "" {
+		return events
+	}
+
+	elements := strings.SplitN(line, ":", 2)
+	if len(elements) < 2 || len(elements[0]) == 0 || !utf8.ValidString(line) {
+		sampleErrors.WithLabelValues("malformed_line").Inc()
+		log.Debugln("Bad line from StatsD:", line)
+		return events
+	}
+	metric := elements[0]
+	var samples []string
+	if strings.Contains(elements[1], "|#") {
+		// using datadog extensions, disable multi-metrics
+		samples = elements[1:]
+	} else {
+		samples = strings.Split(elements[1], ":")
+	}
+samples:
+	for _, sample := range samples {
+		samplesReceived.Inc()
+		components := strings.Split(sample, "|")
+		samplingFactor := 1.0
+		if len(components) < 2 || len(components) > 4 {
+			sampleErrors.WithLabelValues("malformed_component").Inc()
+			log.Debugln("Bad component on line:", line)
+			continue
+		}
+		valueStr, statType := components[0], components[1]
+
+		var relative = false
+		if strings.Index(valueStr, "+") == 0 || strings.Index(valueStr, "-") == 0 {
+			relative = true
+		}
+
+		value, err := strconv.ParseFloat(valueStr, 64)
+		if err != nil {
+			log.Debugf("Bad value %s on line: %s", valueStr, line)
+			sampleErrors.WithLabelValues("malformed_value").Inc()
+			continue
+		}
+
+		multiplyEvents := 1
+		labels := map[string]string{}
+		if len(components) >= 3 {
+			for _, component := range components[2:] {
+				if len(component) == 0 {
+					log.Debugln("Empty component on line: ", line)
+					sampleErrors.WithLabelValues("malformed_component").Inc()
+					continue samples
+				}
+			}
+
+			for _, component := range components[2:] {
+				switch component[0] {
+				case '@':
+					if statType != "c" && statType != "ms" {
+						log.Debugln("Illegal sampling factor for non-counter metric on line", line)
+						sampleErrors.WithLabelValues("illegal_sample_factor").Inc()
+						continue
+					}
+					samplingFactor, err = strconv.ParseFloat(component[1:], 64)
+					if err != nil {
+						log.Debugf("Invalid sampling factor %s on line %s", component[1:], line)
+						sampleErrors.WithLabelValues("invalid_sample_factor").Inc()
+					}
+					if samplingFactor == 0 {
+						samplingFactor = 1
+					}
+
+					if statType == "c" {
+						value /= samplingFactor
+					} else if statType == "ms" {
+						multiplyEvents = int(1 / samplingFactor)
+					}
+				case '#':
+					labels = parseDogStatsDTagsToLabels(component)
+				default:
+					log.Debugf("Invalid sampling factor or tag section %s on line %s", components[2], line)
+					sampleErrors.WithLabelValues("invalid_sample_factor").Inc()
+					continue
+				}
+			}
+		}
+
+		for i := 0; i < multiplyEvents; i++ {
+			event, err := buildEvent(statType, metric, value, relative, labels)
+			if err != nil {
+				log.Debugf("Error building event on line %s: %s", line, err)
+				sampleErrors.WithLabelValues("illegal_event").Inc()
+				continue
+			}
+			events = append(events, event)
+		}
+	}
+	return events
+}
+
+type StatsDUDPListener struct {
+	Conn *net.UDPConn
+}
+
+func (l *StatsDUDPListener) Listen(e chan<- Events) {
+	buf := make([]byte, 65535)
+	for {
+		n, _, err := l.Conn.ReadFromUDP(buf)
+		if err != nil {
+			log.Fatal(err)
+		}
+		l.handlePacket(buf[0:n], e)
+	}
+}
+
+func (l *StatsDUDPListener) handlePacket(packet []byte, e chan<- Events) {
+	udpPackets.Inc()
+	lines := strings.Split(string(packet), "\n")
+	events := Events{}
+	for _, line := range lines {
+		linesReceived.Inc()
+		events = append(events, lineToEvents(line)...)
+	}
+	e <- events
+}
+
+type StatsDTCPListener struct {
+	Conn *net.TCPListener
+}
+
+func (l *StatsDTCPListener) Listen(e chan<- Events) {
+	defer l.Conn.Close()
+	for {
+		c, err := l.Conn.AcceptTCP()
+		if err != nil {
+			log.Fatalf("AcceptTCP failed: %v", err)
+		}
+		go l.handleConn(c, e)
+	}
+}
+
+func (l *StatsDTCPListener) handleConn(c *net.TCPConn, e chan<- Events) {
+	defer c.Close()
+
+	tcpConnections.Inc()
+
+	r := bufio.NewReader(c)
+	for {
+		line, isPrefix, err := r.ReadLine()
+		if err != nil {
+			if err != io.EOF {
+				tcpErrors.Inc()
+				log.Debugf("Read %s failed: %v", c.RemoteAddr(), err)
+			}
+			break
+		}
+		if isPrefix {
+			tcpLineTooLong.Inc()
+			log.Debugf("Read %s failed: line too long", c.RemoteAddr())
+			break
+		}
+		linesReceived.Inc()
+		e <- lineToEvents(string(line))
+	}
+}

pkg/node/statsd/exporter/mapper.go

@@ -0,0 +1,158 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package exporter
+
+import (
+	"fmt"
+	"io/ioutil"
+	"regexp"
+	"strings"
+	"sync"
+
+	"github.com/prometheus/client_golang/prometheus"
+	yaml "gopkg.in/yaml.v2"
+)
+
+var (
+	identifierRE   = `[a-zA-Z_][a-zA-Z0-9_]+`
+	statsdMetricRE = `[a-zA-Z_](-?[a-zA-Z0-9_])+`
+
+	metricLineRE = regexp.MustCompile(`^(\*\.|` + statsdMetricRE + `\.)+(\*|` + statsdMetricRE + `)$`)
+	labelLineRE  = regexp.MustCompile(`^(` + identifierRE + `)\s*=\s*"(.*)"$`)
+	metricNameRE = regexp.MustCompile(`^` + identifierRE + `$`)
+)
+
+type mapperConfigDefaults struct {
+	TimerType timerType `yaml:"timer_type"`
+	Buckets   []float64 `yaml:"buckets"`
+	MatchType matchType `yaml:"match_type"`
+}
+
+//MetricMapper MetricMapper
+type MetricMapper struct {
+	Defaults mapperConfigDefaults `yaml:"defaults"`
+	Mappings []metricMapping      `yaml:"mappings"`
+	mutex    sync.Mutex
+}
+
+type metricMapping struct {
+	Match     string `yaml:"match"`
+	Name      string `yaml:"name"`
+	regex     *regexp.Regexp
+	Labels    prometheus.Labels `yaml:"labels"`
+	TimerType timerType         `yaml:"timer_type"`
+	Buckets   []float64         `yaml:"buckets"`
+	MatchType matchType         `yaml:"match_type"`
+	HelpText  string            `yaml:"help"`
+}
+
+func (m *MetricMapper) InitFromYAMLString(fileContents string) error {
+	var n MetricMapper
+
+	if err := yaml.Unmarshal([]byte(fileContents), &n); err != nil {
+		return err
+	}
+
+	if n.Defaults.Buckets == nil || len(n.Defaults.Buckets) == 0 {
+		n.Defaults.Buckets = prometheus.DefBuckets
+	}
+
+	if n.Defaults.MatchType == matchTypeDefault {
+		n.Defaults.MatchType = matchTypeGlob
+	}
+
+	for i := range n.Mappings {
+		currentMapping := &n.Mappings[i]
+
+		// check that label is correct
+		for k := range currentMapping.Labels {
+			if !metricNameRE.MatchString(k) {
+				return fmt.Errorf("invalid label key: %s", k)
+			}
+		}
+
+		if currentMapping.Name == "" {
+			return fmt.Errorf("line %d: metric mapping didn't set a metric name", i)
+		}
+
+		if !metricNameRE.MatchString(currentMapping.Name) {
+			return fmt.Errorf("metric name '%s' doesn't match regex '%s'", currentMapping.Name, metricNameRE)
+		}
+
+		if currentMapping.MatchType == "" {
+			currentMapping.MatchType = n.Defaults.MatchType
+		}
+
+		if currentMapping.MatchType == matchTypeGlob {
+			if !metricLineRE.MatchString(currentMapping.Match) {
+				return fmt.Errorf("invalid match: %s", currentMapping.Match)
+			}
+			// Translate the glob-style metric match line into a proper regex that we
+			// can use to match metrics later on.
+			metricRe := strings.Replace(currentMapping.Match, ".", "\\.", -1)
+			metricRe = strings.Replace(metricRe, "*", "([^.]*)", -1)
+			currentMapping.regex = regexp.MustCompile("^" + metricRe + "$")
+		} else {
+			currentMapping.regex = regexp.MustCompile(currentMapping.Match)
+		}
+
+		if currentMapping.TimerType == "" {
+			currentMapping.TimerType = n.Defaults.TimerType
+		}
+
+		if currentMapping.Buckets == nil || len(currentMapping.Buckets) == 0 {
+			currentMapping.Buckets = n.Defaults.Buckets
+		}
+
+	}
+
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	m.Defaults = n.Defaults
+	m.Mappings = n.Mappings
+
+	mappingsCount.Set(float64(len(n.Mappings)))
+
+	return nil
+}
+
+func (m *MetricMapper) InitFromFile(fileName string) error {
+	mappingStr, err := ioutil.ReadFile(fileName)
+	if err != nil {
+		return err
+	}
+	return m.InitFromYAMLString(string(mappingStr))
+}
+
+func (m *MetricMapper) getMapping(statsdMetric string) (*metricMapping, prometheus.Labels, bool) {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	for _, mapping := range m.Mappings {
+		matches := mapping.regex.FindStringSubmatchIndex(statsdMetric)
+		if len(matches) == 0 {
+			continue
+		}
+
+		labels := prometheus.Labels{}
+		for label, valueExpr := range mapping.Labels {
+			value := mapping.regex.ExpandString([]byte{}, valueExpr, statsdMetric, matches)
+			labels[label] = string(value)
+		}
+		return &mapping, labels, true
+	}
+
+	return nil, nil, false
+}

pkg/node/statsd/exporter/match.go

@@ -0,0 +1,41 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package exporter
+
+import "fmt"
+
+type matchType string
+
+const (
+	matchTypeGlob    matchType = "glob"
+	matchTypeRegex   matchType = "regex"
+	matchTypeDefault matchType = ""
+)
+
+func (t *matchType) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var v string
+	if err := unmarshal(&v); err != nil {
+		return err
+	}
+
+	switch matchType(v) {
+	case matchTypeRegex:
+		*t = matchTypeRegex
+	case matchTypeGlob, matchTypeDefault:
+		*t = matchTypeGlob
+	default:
+		return fmt.Errorf("invalid match type %q", v)
+	}
+	return nil
+}

pkg/node/statsd/exporter/telemetry.go

@@ -0,0 +1,122 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package exporter
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+	eventStats = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_events_total",
+			Help: "The total number of StatsD events seen.",
+		},
+		[]string{"type"},
+	)
+	eventsUnmapped = prometheus.NewCounter(prometheus.CounterOpts{
+		Name: "statsd_exporter_events_unmapped_total",
+		Help: "The total number of StatsD events no mapping was found for.",
+	})
+	udpPackets = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_udp_packets_total",
+			Help: "The total number of StatsD packets received over UDP.",
+		},
+	)
+	tcpConnections = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_tcp_connections_total",
+			Help: "The total number of TCP connections handled.",
+		},
+	)
+	tcpErrors = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_tcp_connection_errors_total",
+			Help: "The number of errors encountered reading from TCP.",
+		},
+	)
+	tcpLineTooLong = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_tcp_too_long_lines_total",
+			Help: "The number of lines discarded due to being too long.",
+		},
+	)
+	linesReceived = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_lines_total",
+			Help: "The total number of StatsD lines received.",
+		},
+	)
+	samplesReceived = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_samples_total",
+			Help: "The total number of StatsD samples received.",
+		},
+	)
+	sampleErrors = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_sample_errors_total",
+			Help: "The total number of errors parsing StatsD samples.",
+		},
+		[]string{"reason"},
+	)
+	tagsReceived = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_tags_total",
+			Help: "The total number of DogStatsD tags processed.",
+		},
+	)
+	tagErrors = prometheus.NewCounter(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_tag_errors_total",
+			Help: "The number of errors parsign DogStatsD tags.",
+		},
+	)
+	ConfigLoads = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_config_reloads_total",
+			Help: "The number of configuration reloads.",
+		},
+		[]string{"outcome"},
+	)
+	mappingsCount = prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "statsd_exporter_loaded_mappings",
+		Help: "The current number of configured metric mappings.",
+	})
+	conflictingEventStats = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "statsd_exporter_events_conflict_total",
+			Help: "The total number of StatsD events with conflicting names.",
+		},
+		[]string{"type"},
+	)
+)
+
+//MetryInit init
+func MetryInit(registry *prometheus.Registry) {
+	registry.MustRegister(eventStats)
+	registry.MustRegister(udpPackets)
+	registry.MustRegister(tcpConnections)
+	registry.MustRegister(tcpErrors)
+	registry.MustRegister(tcpLineTooLong)
+	registry.MustRegister(linesReceived)
+	registry.MustRegister(samplesReceived)
+	registry.MustRegister(sampleErrors)
+	registry.MustRegister(tagsReceived)
+	registry.MustRegister(tagErrors)
+	registry.MustRegister(ConfigLoads)
+	registry.MustRegister(mappingsCount)
+	registry.MustRegister(conflictingEventStats)
+}

pkg/node/statsd/exporter/timer.go

@@ -0,0 +1,41 @@
+// Copyright 2013 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package exporter
+
+import "fmt"
+
+type timerType string
+
+const (
+	timerTypeHistogram timerType = "histogram"
+	timerTypeSummary   timerType = "summary"
+	timerTypeDefault   timerType = ""
+)
+
+func (t *timerType) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var v string
+	if err := unmarshal(&v); err != nil {
+		return err
+	}
+
+	switch timerType(v) {
+	case timerTypeHistogram:
+		*t = timerTypeHistogram
+	case timerTypeSummary, timerTypeDefault:
+		*t = timerTypeSummary
+	default:
+		return fmt.Errorf("invalid timer type '%s'", v)
+	}
+	return nil
+}

pkg/node/statsd/statsd_export.go

@@ -0,0 +1,223 @@
+// RAINBOND, Application Management Platform
+// Copyright (C) 2014-2017 Goodrain Co., Ltd.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version. For any non-GPL usage of Rainbond,
+// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
+// must be obtained first.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+package statsd
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+	"yiyun/common/log"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/howeyc/fsnotify"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/common/version"
+
+	"github.com/goodrain/rainbond/cmd/node/option"
+	"github.com/goodrain/rainbond/pkg/node/statsd/exporter"
+)
+
+//Exporter receive statsd metric and export prometheus metric
+type Exporter struct {
+	statsdListenAddress string
+	statsdListenUDP     string
+	statsdListenTCP     string
+	mappingConfig       string
+	readBuffer          int
+	exporter            *exporter.Exporter
+	register            *prometheus.Registry
+	mapper              *exporter.MetricMapper
+}
+
+//CreateExporter create a exporter
+func CreateExporter(sc option.StatsdConfig, register *prometheus.Registry) *Exporter {
+	exp := &Exporter{
+		statsdListenAddress: sc.StatsdListenAddress,
+		statsdListenTCP:     sc.StatsdListenTCP,
+		statsdListenUDP:     sc.StatsdListenUDP,
+		readBuffer:          sc.ReadBuffer,
+		mappingConfig:       sc.MappingConfig,
+		register:            register,
+	}
+	exporter.MetryInit(register)
+	return exp
+}
+
+//Start Start
+func (e *Exporter) Start() error {
+	e.register.Register(version.NewCollector("statsd_exporter"))
+	if e.statsdListenAddress != "" {
+		logrus.Warnln("Warning: statsd.listen-address is DEPRECATED, please use statsd.listen-udp instead.")
+		e.statsdListenUDP = e.statsdListenAddress
+	}
+
+	if e.statsdListenUDP == "" && e.statsdListenTCP == "" {
+		logrus.Fatalln("At least one of UDP/TCP listeners must be specified.")
+		return fmt.Errorf("At least one of UDP/TCP listeners must be specified")
+	}
+
+	logrus.Infoln("Starting StatsD -> Prometheus Exporter", version.Info())
+	logrus.Infoln("Build context", version.BuildContext())
+	logrus.Infof("Accepting StatsD Traffic: UDP %v, TCP %v", e.statsdListenUDP, e.statsdListenTCP)
+
+	events := make(chan exporter.Events, 1024)
+
+	if e.statsdListenUDP != "" {
+		udpListenAddr := udpAddrFromString(e.statsdListenUDP)
+		uconn, err := net.ListenUDP("udp", udpListenAddr)
+		if err != nil {
+			return err
+		}
+		if e.readBuffer != 0 {
+			err = uconn.SetReadBuffer(e.readBuffer)
+			if err != nil {
+				return err
+			}
+		}
+		ul := &exporter.StatsDUDPListener{Conn: uconn}
+		go ul.Listen(events)
+	}
+
+	if e.statsdListenTCP != "" {
+		tcpListenAddr := tcpAddrFromString(e.statsdListenTCP)
+		tconn, err := net.ListenTCP("tcp", tcpListenAddr)
+		if err != nil {
+			return err
+		}
+		tl := &exporter.StatsDTCPListener{Conn: tconn}
+		go tl.Listen(events)
+	}
+
+	mapper := &exporter.MetricMapper{}
+	if e.mappingConfig != "" {
+		err := mapper.InitFromFile(e.mappingConfig)
+		if err != nil {
+			log.Fatal("Error loading config:", err)
+			return err
+		}
+		//观察文件变化进行重新reload是有风险的,采用API重新加载
+		//go watchConfig(e.mappingConfig, mapper)
+	}
+	exporter := exporter.NewExporter(mapper, e.register)
+	e.exporter = exporter
+	e.mapper = mapper
+	go exporter.Listen(events)
+	return nil
+}
+
+// Describe implements the prometheus.Collector interface.
+func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
+
+}
+
+// Collect implements the prometheus.Collector interface.
+func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
+}
+
+//GetRegister GetRegister
+func (e *Exporter) GetRegister() *prometheus.Registry {
+	return e.register
+}
+
+func ipPortFromString(addr string) (*net.IPAddr, int) {
+	host, portStr, err := net.SplitHostPort(addr)
+	if err != nil {
+		logrus.Fatal("Bad StatsD listening address", addr)
+	}
+
+	if host == "" {
+		host = "0.0.0.0"
+	}
+	ip, err := net.ResolveIPAddr("ip", host)
+	if err != nil {
+		logrus.Fatalf("Unable to resolve %s: %s", host, err)
+	}
+
+	port, err := strconv.Atoi(portStr)
+	if err != nil || port < 0 || port > 65535 {
+		logrus.Fatalf("Bad port %s: %s", portStr, err)
+	}
+
+	return ip, port
+}
+
+func udpAddrFromString(addr string) *net.UDPAddr {
+	ip, port := ipPortFromString(addr)
+	return &net.UDPAddr{
+		IP:   ip.IP,
+		Port: port,
+		Zone: ip.Zone,
+	}
+}
+
+func tcpAddrFromString(addr string) *net.TCPAddr {
+	ip, port := ipPortFromString(addr)
+	return &net.TCPAddr{
+		IP:   ip.IP,
+		Port: port,
+		Zone: ip.Zone,
+	}
+}
+
+func watchConfig(fileName string, mapper *exporter.MetricMapper) {
+	watcher, err := fsnotify.NewWatcher()
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	err = watcher.WatchFlags(fileName, fsnotify.FSN_MODIFY)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	for {
+		select {
+		case ev := <-watcher.Event:
+			logrus.Infof("Config file changed (%s), attempting reload", ev)
+			err = mapper.InitFromFile(fileName)
+			if err != nil {
+				logrus.Errorln("Error reloading config:", err)
+				exporter.ConfigLoads.WithLabelValues("failure").Inc()
+			} else {
+				logrus.Infoln("Config reloaded successfully")
+				exporter.ConfigLoads.WithLabelValues("success").Inc()
+			}
+			// Re-add the file watcher since it can get lost on some changes. E.g.
+			// saving a file with vim results in a RENAME-MODIFY-DELETE event
+			// sequence, after which the newly written file is no longer watched.
+			err = watcher.WatchFlags(fileName, fsnotify.FSN_MODIFY)
+		case err := <-watcher.Error:
+			logrus.Errorln("Error watching config:", err)
+		}
+	}
+}
+
+//ReloadConfig reload mapper config file
+func (e *Exporter) ReloadConfig() (err error) {
+	logrus.Infof("Config file changed, attempting reload")
+	err = e.mapper.InitFromFile(e.mappingConfig)
+	if err != nil {
+		logrus.Errorln("Error reloading config:", err)
+		exporter.ConfigLoads.WithLabelValues("failure").Inc()
+	} else {
+		logrus.Infoln("Config reloaded successfully")
+		exporter.ConfigLoads.WithLabelValues("success").Inc()
+	}
+	return
+}

test/mapper.yml

@@ -0,0 +1,16 @@
+#
+mappings:
+- match: "*.*.*.request.*"
+  name: "app_http_request"
+  labels:
+    service_id: "$1"
+    port: "$2"
+    protocol: $3
+    method: "$4"
+- match: "*.*.*.request.unusual.*"
+  name: "app_http_request_unusual"
+  labels:
+    service_id: "$1"
+    port: "$2"
+    protocol: $3
+    code: "$4"

vendor/github.com/howeyc/fsnotify/AUTHORS

@@ -0,0 +1,28 @@
+# Names should be added to this file as
+#	Name or Organization <email address>
+# The email address is not required for organizations.
+
+# You can update this list using the following command:
+#
+#   $ git shortlog -se | awk '{print $2 " " $3 " " $4}'
+
+# Please keep the list sorted.
+
+Adrien Bustany <adrien@bustany.org>
+Caleb Spare <cespare@gmail.com>
+Case Nelson <case@teammating.com>
+Chris Howey <howeyc@gmail.com> <chris@howey.me>
+Christoffer Buchholz <christoffer.buchholz@gmail.com>
+Dave Cheney <dave@cheney.net>
+Francisco Souza <f@souza.cc>
+John C Barstow
+Kelvin Fo <vmirage@gmail.com>
+Nathan Youngman <git@nathany.com>
+Paul Hammond <paul@paulhammond.org>
+Pursuit92 <JoshChase@techpursuit.net>
+Rob Figueiredo <robfig@gmail.com>
+Travis Cline <travis.cline@gmail.com>
+Tudor Golubenco <tudor.g@gmail.com>
+bronze1man <bronze1man@gmail.com>
+debrando <denis.brandolini@gmail.com>
+henrikedwards <henrik.edwards@gmail.com>

vendor/github.com/howeyc/fsnotify/CHANGELOG.md

@@ -0,0 +1,160 @@
+# Changelog
+
+## v0.9.0 / 2014-01-17
+
+* IsAttrib() for events that only concern a file's metadata [#79][] (thanks @abustany)
+* [Fix] kqueue: fix deadlock [#77][] (thanks @cespare)
+* [NOTICE] Development has moved to `code.google.com/p/go.exp/fsnotify` in preparation for inclusion in the Go standard library.
+
+## v0.8.12 / 2013-11-13
+
+* [API] Remove FD_SET and friends from Linux adapter
+
+## v0.8.11 / 2013-11-02
+
+* [Doc] Add Changelog [#72][] (thanks @nathany)
+* [Doc] Spotlight and double modify events on OS X [#62][] (reported by @paulhammond)
+
+## v0.8.10 / 2013-10-19
+
+* [Fix] kqueue: remove file watches when parent directory is removed [#71][] (reported by @mdwhatcott)
+* [Fix] kqueue: race between Close and readEvents [#70][] (reported by @bernerdschaefer)
+* [Doc] specify OS-specific limits in README (thanks @debrando)
+
+## v0.8.9 / 2013-09-08
+
+* [Doc] Contributing (thanks @nathany)
+* [Doc] update package path in example code [#63][] (thanks @paulhammond)
+* [Doc] GoCI badge in README (Linux only) [#60][]
+* [Doc] Cross-platform testing with Vagrant  [#59][] (thanks @nathany)
+
+## v0.8.8 / 2013-06-17
+
+* [Fix] Windows: handle `ERROR_MORE_DATA` on Windows [#49][] (thanks @jbowtie)
+
+## v0.8.7 / 2013-06-03
+
+* [API] Make syscall flags internal
+* [Fix] inotify: ignore event changes
+* [Fix] race in symlink test [#45][] (reported by @srid)
+* [Fix] tests on Windows
+* lower case error messages
+
+## v0.8.6 / 2013-05-23
+
+* kqueue: Use EVT_ONLY flag on Darwin
+* [Doc] Update README with full example
+
+## v0.8.5 / 2013-05-09
+
+* [Fix] inotify: allow monitoring of "broken" symlinks (thanks @tsg)
+
+## v0.8.4 / 2013-04-07
+
+* [Fix] kqueue: watch all file events [#40][] (thanks @ChrisBuchholz)
+
+## v0.8.3 / 2013-03-13
+
+* [Fix] inoitfy/kqueue memory leak [#36][] (reported by @nbkolchin)
+* [Fix] kqueue: use fsnFlags for watching a directory [#33][] (reported by @nbkolchin)
+
+## v0.8.2 / 2013-02-07
+
+* [Doc] add Authors
+* [Fix] fix data races for map access [#29][] (thanks @fsouza)
+
+## v0.8.1 / 2013-01-09
+
+* [Fix] Windows path separators
+* [Doc] BSD License
+
+## v0.8.0 / 2012-11-09
+
+* kqueue: directory watching improvements (thanks @vmirage)
+* inotify: add `IN_MOVED_TO` [#25][] (requested by @cpisto)
+* [Fix] kqueue: deleting watched directory [#24][] (reported by @jakerr)
+
+## v0.7.4 / 2012-10-09
+
+* [Fix] inotify: fixes from https://codereview.appspot.com/5418045/ (ugorji)
+* [Fix] kqueue: preserve watch flags when watching for delete [#21][] (reported by @robfig)
+* [Fix] kqueue: watch the directory even if it isn't a new watch (thanks @robfig)
+* [Fix] kqueue: modify after recreation of file
+
+## v0.7.3 / 2012-09-27
+
+* [Fix] kqueue: watch with an existing folder inside the watched folder (thanks @vmirage)
+* [Fix] kqueue: no longer get duplicate CREATE events
+
+## v0.7.2 / 2012-09-01
+
+* kqueue: events for created directories
+
+## v0.7.1 / 2012-07-14
+
+* [Fix] for renaming files
+
+## v0.7.0 / 2012-07-02
+
+* [Feature] FSNotify flags
+* [Fix] inotify: Added file name back to event path
+
+## v0.6.0 / 2012-06-06
+
+* kqueue: watch files after directory created (thanks @tmc)
+
+## v0.5.1 / 2012-05-22
+
+* [Fix] inotify: remove all watches before Close()
+
+## v0.5.0 / 2012-05-03
+
+* [API] kqueue: return errors during watch instead of sending over channel
+* kqueue: match symlink behavior on Linux
+* inotify: add `DELETE_SELF` (requested by @taralx)
+* [Fix] kqueue: handle EINTR (reported by @robfig)
+* [Doc] Godoc example [#1][] (thanks @davecheney)
+
+## v0.4.0 / 2012-03-30
+
+* Go 1 released: build with go tool
+* [Feature] Windows support using winfsnotify
+* Windows does not have attribute change notifications
+* Roll attribute notifications into IsModify
+
+## v0.3.0 / 2012-02-19
+
+* kqueue: add files when watch directory
+
+## v0.2.0 / 2011-12-30
+
+* update to latest Go weekly code
+
+## v0.1.0 / 2011-10-19
+
+* kqueue: add watch on file creation to match inotify
+* kqueue: create file event
+* inotify: ignore `IN_IGNORED` events
+* event String()
+* linux: common FileEvent functions
+* initial commit
+
+[#79]: https://github.com/howeyc/fsnotify/pull/79
+[#77]: https://github.com/howeyc/fsnotify/pull/77
+[#72]: https://github.com/howeyc/fsnotify/issues/72
+[#71]: https://github.com/howeyc/fsnotify/issues/71
+[#70]: https://github.com/howeyc/fsnotify/issues/70
+[#63]: https://github.com/howeyc/fsnotify/issues/63
+[#62]: https://github.com/howeyc/fsnotify/issues/62
+[#60]: https://github.com/howeyc/fsnotify/issues/60
+[#59]: https://github.com/howeyc/fsnotify/issues/59
+[#49]: https://github.com/howeyc/fsnotify/issues/49
+[#45]: https://github.com/howeyc/fsnotify/issues/45
+[#40]: https://github.com/howeyc/fsnotify/issues/40
+[#36]: https://github.com/howeyc/fsnotify/issues/36
+[#33]: https://github.com/howeyc/fsnotify/issues/33
+[#29]: https://github.com/howeyc/fsnotify/issues/29
+[#25]: https://github.com/howeyc/fsnotify/issues/25
+[#24]: https://github.com/howeyc/fsnotify/issues/24
+[#21]: https://github.com/howeyc/fsnotify/issues/21
+[#1]: https://github.com/howeyc/fsnotify/issues/1

vendor/github.com/howeyc/fsnotify/CONTRIBUTING.md

@@ -0,0 +1,7 @@
+# Contributing
+
+## Moving Notice
+
+There is a fork being actively developed with a new API in preparation for the Go Standard Library:
+[github.com/go-fsnotify/fsnotify](https://github.com/go-fsnotify/fsnotify)
+

vendor/github.com/howeyc/fsnotify/LICENSE

@@ -1,4 +1,5 @@
 Copyright (c) 2012 The Go Authors. All rights reserved.
+Copyright (c) 2012 fsnotify Authors. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are

vendor/github.com/howeyc/fsnotify/README.md

@@ -0,0 +1,93 @@
+# File system notifications for Go
+
+[![GoDoc](https://godoc.org/github.com/howeyc/fsnotify?status.png)](http://godoc.org/github.com/howeyc/fsnotify)
+
+Cross platform: Windows, Linux, BSD and OS X.
+
+## Moving Notice
+
+There is a fork being actively developed with a new API in preparation for the Go Standard Library:
+[github.com/go-fsnotify/fsnotify](https://github.com/go-fsnotify/fsnotify)
+
+## Example:
+
+```go
+package main
+
+import (
+	"log"
+
+	"github.com/howeyc/fsnotify"
+)
+
+func main() {
+	watcher, err := fsnotify.NewWatcher()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	done := make(chan bool)
+
+	// Process events
+	go func() {
+		for {
+			select {
+			case ev := <-watcher.Event:
+				log.Println("event:", ev)
+			case err := <-watcher.Error:
+				log.Println("error:", err)
+			}
+		}
+	}()
+
+	err = watcher.Watch("testDir")
+	if err != nil {
+		log.Fatal(err)
+	}
+	
+	// Hang so program doesn't exit
+	<-done
+
+	/* ... do stuff ... */
+	watcher.Close()
+}
+```
+
+For each event:
+* Name
+* IsCreate()
+* IsDelete()
+* IsModify()
+* IsRename()
+
+## FAQ
+
+**When a file is moved to another directory is it still being watched?**
+
+No (it shouldn't be, unless you are watching where it was moved to).
+
+**When I watch a directory, are all subdirectories watched as well?**
+
+No, you must add watches for any directory you want to watch (a recursive watcher is in the works [#56][]).
+
+**Do I have to watch the Error and Event channels in a separate goroutine?**
+
+As of now, yes. Looking into making this single-thread friendly (see [#7][])
+
+**Why am I receiving multiple events for the same file on OS X?**
+
+Spotlight indexing on OS X can result in multiple events (see [#62][]). A temporary workaround is to add your folder(s) to the *Spotlight Privacy settings* until we have a native FSEvents implementation (see [#54][]).
+
+**How many files can be watched at once?**
+
+There are OS-specific limits as to how many watches can be created:
+* Linux: /proc/sys/fs/inotify/max_user_watches contains the limit,
+reaching this limit results in a "no space left on device" error.
+* BSD / OSX: sysctl variables "kern.maxfiles" and "kern.maxfilesperproc", reaching these limits results in a "too many open files" error.
+
+
+[#62]: https://github.com/howeyc/fsnotify/issues/62
+[#56]: https://github.com/howeyc/fsnotify/issues/56
+[#54]: https://github.com/howeyc/fsnotify/issues/54
+[#7]: https://github.com/howeyc/fsnotify/issues/7
+

vendor/github.com/howeyc/fsnotify/fsnotify.go

@@ -0,0 +1,111 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package fsnotify implements file system notification.
+package fsnotify
+
+import "fmt"
+
+const (
+	FSN_CREATE = 1
+	FSN_MODIFY = 2
+	FSN_DELETE = 4
+	FSN_RENAME = 8
+
+	FSN_ALL = FSN_MODIFY | FSN_DELETE | FSN_RENAME | FSN_CREATE
+)
+
+// Purge events from interal chan to external chan if passes filter
+func (w *Watcher) purgeEvents() {
+	for ev := range w.internalEvent {
+		sendEvent := false
+		w.fsnmut.Lock()
+		fsnFlags := w.fsnFlags[ev.Name]
+		w.fsnmut.Unlock()
+
+		if (fsnFlags&FSN_CREATE == FSN_CREATE) && ev.IsCreate() {
+			sendEvent = true
+		}
+
+		if (fsnFlags&FSN_MODIFY == FSN_MODIFY) && ev.IsModify() {
+			sendEvent = true
+		}
+
+		if (fsnFlags&FSN_DELETE == FSN_DELETE) && ev.IsDelete() {
+			sendEvent = true
+		}
+
+		if (fsnFlags&FSN_RENAME == FSN_RENAME) && ev.IsRename() {
+			sendEvent = true
+		}
+
+		if sendEvent {
+			w.Event <- ev
+		}
+
+		// If there's no file, then no more events for user
+		// BSD must keep watch for internal use (watches DELETEs to keep track
+		// what files exist for create events)
+		if ev.IsDelete() {
+			w.fsnmut.Lock()
+			delete(w.fsnFlags, ev.Name)
+			w.fsnmut.Unlock()
+		}
+	}
+
+	close(w.Event)
+}
+
+// Watch a given file path
+func (w *Watcher) Watch(path string) error {
+	return w.WatchFlags(path, FSN_ALL)
+}
+
+// Watch a given file path for a particular set of notifications (FSN_MODIFY etc.)
+func (w *Watcher) WatchFlags(path string, flags uint32) error {
+	w.fsnmut.Lock()
+	w.fsnFlags[path] = flags
+	w.fsnmut.Unlock()
+	return w.watch(path)
+}
+
+// Remove a watch on a file
+func (w *Watcher) RemoveWatch(path string) error {
+	w.fsnmut.Lock()
+	delete(w.fsnFlags, path)
+	w.fsnmut.Unlock()
+	return w.removeWatch(path)
+}
+
+// String formats the event e in the form
+// "filename: DELETE|MODIFY|..."
+func (e *FileEvent) String() string {
+	var events string = ""
+
+	if e.IsCreate() {
+		events += "|" + "CREATE"
+	}
+
+	if e.IsDelete() {
+		events += "|" + "DELETE"
+	}
+
+	if e.IsModify() {
+		events += "|" + "MODIFY"
+	}
+
+	if e.IsRename() {
+		events += "|" + "RENAME"
+	}
+
+	if e.IsAttrib() {
+		events += "|" + "ATTRIB"
+	}
+
+	if len(events) > 0 {
+		events = events[1:]
+	}
+
+	return fmt.Sprintf("%q: %s", e.Name, events)
+}

vendor/github.com/howeyc/fsnotify/fsnotify_bsd.go

@@ -0,0 +1,496 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd dragonfly darwin
+
+package fsnotify
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sync"
+	"syscall"
+)
+
+const (
+	// Flags (from <sys/event.h>)
+	sys_NOTE_DELETE = 0x0001 /* vnode was removed */
+	sys_NOTE_WRITE  = 0x0002 /* data contents changed */
+	sys_NOTE_EXTEND = 0x0004 /* size increased */
+	sys_NOTE_ATTRIB = 0x0008 /* attributes changed */
+	sys_NOTE_LINK   = 0x0010 /* link count changed */
+	sys_NOTE_RENAME = 0x0020 /* vnode was renamed */
+	sys_NOTE_REVOKE = 0x0040 /* vnode access was revoked */
+
+	// Watch all events
+	sys_NOTE_ALLEVENTS = sys_NOTE_DELETE | sys_NOTE_WRITE | sys_NOTE_ATTRIB | sys_NOTE_RENAME
+
+	// Block for 100 ms on each call to kevent
+	keventWaitTime = 100e6
+)
+
+type FileEvent struct {
+	mask   uint32 // Mask of events
+	Name   string // File name (optional)
+	create bool   // set by fsnotify package if found new file
+}
+
+// IsCreate reports whether the FileEvent was triggered by a creation
+func (e *FileEvent) IsCreate() bool { return e.create }
+
+// IsDelete reports whether the FileEvent was triggered by a delete
+func (e *FileEvent) IsDelete() bool { return (e.mask & sys_NOTE_DELETE) == sys_NOTE_DELETE }
+
+// IsModify reports whether the FileEvent was triggered by a file modification
+func (e *FileEvent) IsModify() bool {
+	return ((e.mask&sys_NOTE_WRITE) == sys_NOTE_WRITE || (e.mask&sys_NOTE_ATTRIB) == sys_NOTE_ATTRIB)
+}
+
+// IsRename reports whether the FileEvent was triggered by a change name
+func (e *FileEvent) IsRename() bool { return (e.mask & sys_NOTE_RENAME) == sys_NOTE_RENAME }
+
+// IsAttrib reports whether the FileEvent was triggered by a change in the file metadata.
+func (e *FileEvent) IsAttrib() bool {
+	return (e.mask & sys_NOTE_ATTRIB) == sys_NOTE_ATTRIB
+}
+
+type Watcher struct {
+	mu              sync.Mutex          // Mutex for the Watcher itself.
+	kq              int                 // File descriptor (as returned by the kqueue() syscall)
+	watches         map[string]int      // Map of watched file descriptors (key: path)
+	wmut            sync.Mutex          // Protects access to watches.
+	fsnFlags        map[string]uint32   // Map of watched files to flags used for filter
+	fsnmut          sync.Mutex          // Protects access to fsnFlags.
+	enFlags         map[string]uint32   // Map of watched files to evfilt note flags used in kqueue
+	enmut           sync.Mutex          // Protects access to enFlags.
+	paths           map[int]string      // Map of watched paths (key: watch descriptor)
+	finfo           map[int]os.FileInfo // Map of file information (isDir, isReg; key: watch descriptor)
+	pmut            sync.Mutex          // Protects access to paths and finfo.
+	fileExists      map[string]bool     // Keep track of if we know this file exists (to stop duplicate create events)
+	femut           sync.Mutex          // Protects access to fileExists.
+	externalWatches map[string]bool     // Map of watches added by user of the library.
+	ewmut           sync.Mutex          // Protects access to externalWatches.
+	Error           chan error          // Errors are sent on this channel
+	internalEvent   chan *FileEvent     // Events are queued on this channel
+	Event           chan *FileEvent     // Events are returned on this channel
+	done            chan bool           // Channel for sending a "quit message" to the reader goroutine
+	isClosed        bool                // Set to true when Close() is first called
+}
+
+// NewWatcher creates and returns a new kevent instance using kqueue(2)
+func NewWatcher() (*Watcher, error) {
+	fd, errno := syscall.Kqueue()
+	if fd == -1 {
+		return nil, os.NewSyscallError("kqueue", errno)
+	}
+	w := &Watcher{
+		kq:              fd,
+		watches:         make(map[string]int),
+		fsnFlags:        make(map[string]uint32),
+		enFlags:         make(map[string]uint32),
+		paths:           make(map[int]string),
+		finfo:           make(map[int]os.FileInfo),
+		fileExists:      make(map[string]bool),
+		externalWatches: make(map[string]bool),
+		internalEvent:   make(chan *FileEvent),
+		Event:           make(chan *FileEvent),
+		Error:           make(chan error),
+		done:            make(chan bool, 1),
+	}
+
+	go w.readEvents()
+	go w.purgeEvents()
+	return w, nil
+}
+
+// Close closes a kevent watcher instance
+// It sends a message to the reader goroutine to quit and removes all watches
+// associated with the kevent instance
+func (w *Watcher) Close() error {
+	w.mu.Lock()
+	if w.isClosed {
+		w.mu.Unlock()
+		return nil
+	}
+	w.isClosed = true
+	w.mu.Unlock()
+
+	// Send "quit" message to the reader goroutine
+	w.done <- true
+	w.wmut.Lock()
+	ws := w.watches
+	w.wmut.Unlock()
+	for path := range ws {
+		w.removeWatch(path)
+	}
+
+	return nil
+}
+
+// AddWatch adds path to the watched file set.
+// The flags are interpreted as described in kevent(2).
+func (w *Watcher) addWatch(path string, flags uint32) error {
+	w.mu.Lock()
+	if w.isClosed {
+		w.mu.Unlock()
+		return errors.New("kevent instance already closed")
+	}
+	w.mu.Unlock()
+
+	watchDir := false
+
+	w.wmut.Lock()
+	watchfd, found := w.watches[path]
+	w.wmut.Unlock()
+	if !found {
+		fi, errstat := os.Lstat(path)
+		if errstat != nil {
+			return errstat
+		}
+
+		// don't watch socket
+		if fi.Mode()&os.ModeSocket == os.ModeSocket {
+			return nil
+		}
+
+		// Follow Symlinks
+		// Unfortunately, Linux can add bogus symlinks to watch list without
+		// issue, and Windows can't do symlinks period (AFAIK). To  maintain
+		// consistency, we will act like everything is fine. There will simply
+		// be no file events for broken symlinks.
+		// Hence the returns of nil on errors.
+		if fi.Mode()&os.ModeSymlink == os.ModeSymlink {
+			path, err := filepath.EvalSymlinks(path)
+			if err != nil {
+				return nil
+			}
+
+			fi, errstat = os.Lstat(path)
+			if errstat != nil {
+				return nil
+			}
+		}
+
+		fd, errno := syscall.Open(path, open_FLAGS, 0700)
+		if fd == -1 {
+			return errno
+		}
+		watchfd = fd
+
+		w.wmut.Lock()
+		w.watches[path] = watchfd
+		w.wmut.Unlock()
+
+		w.pmut.Lock()
+		w.paths[watchfd] = path
+		w.finfo[watchfd] = fi
+		w.pmut.Unlock()
+	}
+	// Watch the directory if it has not been watched before.
+	w.pmut.Lock()
+	w.enmut.Lock()
+	if w.finfo[watchfd].IsDir() &&
+		(flags&sys_NOTE_WRITE) == sys_NOTE_WRITE &&
+		(!found || (w.enFlags[path]&sys_NOTE_WRITE) != sys_NOTE_WRITE) {
+		watchDir = true
+	}
+	w.enmut.Unlock()
+	w.pmut.Unlock()
+
+	w.enmut.Lock()
+	w.enFlags[path] = flags
+	w.enmut.Unlock()
+
+	var kbuf [1]syscall.Kevent_t
+	watchEntry := &kbuf[0]
+	watchEntry.Fflags = flags
+	syscall.SetKevent(watchEntry, watchfd, syscall.EVFILT_VNODE, syscall.EV_ADD|syscall.EV_CLEAR)
+	entryFlags := watchEntry.Flags
+	success, errno := syscall.Kevent(w.kq, kbuf[:], nil, nil)
+	if success == -1 {
+		return errno
+	} else if (entryFlags & syscall.EV_ERROR) == syscall.EV_ERROR {
+		return errors.New("kevent add error")
+	}
+
+	if watchDir {
+		errdir := w.watchDirectoryFiles(path)
+		if errdir != nil {
+			return errdir
+		}
+	}
+	return nil
+}
+
+// Watch adds path to the watched file set, watching all events.
+func (w *Watcher) watch(path string) error {
+	w.ewmut.Lock()
+	w.externalWatches[path] = true
+	w.ewmut.Unlock()
+	return w.addWatch(path, sys_NOTE_ALLEVENTS)
+}
+
+// RemoveWatch removes path from the watched file set.
+func (w *Watcher) removeWatch(path string) error {
+	w.wmut.Lock()
+	watchfd, ok := w.watches[path]
+	w.wmut.Unlock()
+	if !ok {
+		return errors.New(fmt.Sprintf("can't remove non-existent kevent watch for: %s", path))
+	}
+	var kbuf [1]syscall.Kevent_t
+	watchEntry := &kbuf[0]
+	syscall.SetKevent(watchEntry, watchfd, syscall.EVFILT_VNODE, syscall.EV_DELETE)
+	entryFlags := watchEntry.Flags
+	success, errno := syscall.Kevent(w.kq, kbuf[:], nil, nil)
+	if success == -1 {
+		return os.NewSyscallError("kevent_rm_watch", errno)
+	} else if (entryFlags & syscall.EV_ERROR) == syscall.EV_ERROR {
+		return errors.New("kevent rm error")
+	}
+	syscall.Close(watchfd)
+	w.wmut.Lock()
+	delete(w.watches, path)
+	w.wmut.Unlock()
+	w.enmut.Lock()
+	delete(w.enFlags, path)
+	w.enmut.Unlock()
+	w.pmut.Lock()
+	delete(w.paths, watchfd)
+	fInfo := w.finfo[watchfd]
+	delete(w.finfo, watchfd)
+	w.pmut.Unlock()
+
+	// Find all watched paths that are in this directory that are not external.
+	if fInfo.IsDir() {
+		var pathsToRemove []string
+		w.pmut.Lock()
+		for _, wpath := range w.paths {
+			wdir, _ := filepath.Split(wpath)
+			if filepath.Clean(wdir) == filepath.Clean(path) {
+				w.ewmut.Lock()
+				if !w.externalWatches[wpath] {
+					pathsToRemove = append(pathsToRemove, wpath)
+				}
+				w.ewmut.Unlock()
+			}
+		}
+		w.pmut.Unlock()
+		for _, p := range pathsToRemove {
+			// Since these are internal, not much sense in propagating error
+			// to the user, as that will just confuse them with an error about
+			// a path they did not explicitly watch themselves.
+			w.removeWatch(p)
+		}
+	}
+
+	return nil
+}
+
+// readEvents reads from the kqueue file descriptor, converts the
+// received events into Event objects and sends them via the Event channel
+func (w *Watcher) readEvents() {
+	var (
+		eventbuf [10]syscall.Kevent_t // Event buffer
+		events   []syscall.Kevent_t   // Received events
+		twait    *syscall.Timespec    // Time to block waiting for events
+		n        int                  // Number of events returned from kevent
+		errno    error                // Syscall errno
+	)
+	events = eventbuf[0:0]
+	twait = new(syscall.Timespec)
+	*twait = syscall.NsecToTimespec(keventWaitTime)
+
+	for {
+		// See if there is a message on the "done" channel
+		var done bool
+		select {
+		case done = <-w.done:
+		default:
+		}
+
+		// If "done" message is received
+		if done {
+			errno := syscall.Close(w.kq)
+			if errno != nil {
+				w.Error <- os.NewSyscallError("close", errno)
+			}
+			close(w.internalEvent)
+			close(w.Error)
+			return
+		}
+
+		// Get new events
+		if len(events) == 0 {
+			n, errno = syscall.Kevent(w.kq, nil, eventbuf[:], twait)
+
+			// EINTR is okay, basically the syscall was interrupted before
+			// timeout expired.
+			if errno != nil && errno != syscall.EINTR {
+				w.Error <- os.NewSyscallError("kevent", errno)
+				continue
+			}
+
+			// Received some events
+			if n > 0 {
+				events = eventbuf[0:n]
+			}
+		}
+
+		// Flush the events we received to the events channel
+		for len(events) > 0 {
+			fileEvent := new(FileEvent)
+			watchEvent := &events[0]
+			fileEvent.mask = uint32(watchEvent.Fflags)
+			w.pmut.Lock()
+			fileEvent.Name = w.paths[int(watchEvent.Ident)]
+			fileInfo := w.finfo[int(watchEvent.Ident)]
+			w.pmut.Unlock()
+			if fileInfo != nil && fileInfo.IsDir() && !fileEvent.IsDelete() {
+				// Double check to make sure the directory exist. This can happen when
+				// we do a rm -fr on a recursively watched folders and we receive a
+				// modification event first but the folder has been deleted and later
+				// receive the delete event
+				if _, err := os.Lstat(fileEvent.Name); os.IsNotExist(err) {
+					// mark is as delete event
+					fileEvent.mask |= sys_NOTE_DELETE
+				}
+			}
+
+			if fileInfo != nil && fileInfo.IsDir() && fileEvent.IsModify() && !fileEvent.IsDelete() {
+				w.sendDirectoryChangeEvents(fileEvent.Name)
+			} else {
+				// Send the event on the events channel
+				w.internalEvent <- fileEvent
+			}
+
+			// Move to next event
+			events = events[1:]
+
+			if fileEvent.IsRename() {
+				w.removeWatch(fileEvent.Name)
+				w.femut.Lock()
+				delete(w.fileExists, fileEvent.Name)
+				w.femut.Unlock()
+			}
+			if fileEvent.IsDelete() {
+				w.removeWatch(fileEvent.Name)
+				w.femut.Lock()
+				delete(w.fileExists, fileEvent.Name)
+				w.femut.Unlock()
+
+				// Look for a file that may have overwritten this
+				// (ie mv f1 f2 will delete f2 then create f2)
+				fileDir, _ := filepath.Split(fileEvent.Name)
+				fileDir = filepath.Clean(fileDir)
+				w.wmut.Lock()
+				_, found := w.watches[fileDir]
+				w.wmut.Unlock()
+				if found {
+					// make sure the directory exist before we watch for changes. When we
+					// do a recursive watch and perform rm -fr, the parent directory might
+					// have gone missing, ignore the missing directory and let the
+					// upcoming delete event remove the watch form the parent folder
+					if _, err := os.Lstat(fileDir); !os.IsNotExist(err) {
+						w.sendDirectoryChangeEvents(fileDir)
+					}
+				}
+			}
+		}
+	}
+}
+
+func (w *Watcher) watchDirectoryFiles(dirPath string) error {
+	// Get all files
+	files, err := ioutil.ReadDir(dirPath)
+	if err != nil {
+		return err
+	}
+
+	// Search for new files
+	for _, fileInfo := range files {
+		filePath := filepath.Join(dirPath, fileInfo.Name())
+
+		// Inherit fsnFlags from parent directory
+		w.fsnmut.Lock()
+		if flags, found := w.fsnFlags[dirPath]; found {
+			w.fsnFlags[filePath] = flags
+		} else {
+			w.fsnFlags[filePath] = FSN_ALL
+		}
+		w.fsnmut.Unlock()
+
+		if fileInfo.IsDir() == false {
+			// Watch file to mimic linux fsnotify
+			e := w.addWatch(filePath, sys_NOTE_ALLEVENTS)
+			if e != nil {
+				return e
+			}
+		} else {
+			// If the user is currently watching directory
+			// we want to preserve the flags used
+			w.enmut.Lock()
+			currFlags, found := w.enFlags[filePath]
+			w.enmut.Unlock()
+			var newFlags uint32 = sys_NOTE_DELETE
+			if found {
+				newFlags |= currFlags
+			}
+
+			// Linux gives deletes if not explicitly watching
+			e := w.addWatch(filePath, newFlags)
+			if e != nil {
+				return e
+			}
+		}
+		w.femut.Lock()
+		w.fileExists[filePath] = true
+		w.femut.Unlock()
+	}
+
+	return nil
+}
+
+// sendDirectoryEvents searches the directory for newly created files
+// and sends them over the event channel. This functionality is to have
+// the BSD version of fsnotify match linux fsnotify which provides a
+// create event for files created in a watched directory.
+func (w *Watcher) sendDirectoryChangeEvents(dirPath string) {
+	// Get all files
+	files, err := ioutil.ReadDir(dirPath)
+	if err != nil {
+		w.Error <- err
+	}
+
+	// Search for new files
+	for _, fileInfo := range files {
+		filePath := filepath.Join(dirPath, fileInfo.Name())
+		w.femut.Lock()
+		_, doesExist := w.fileExists[filePath]
+		w.femut.Unlock()
+		if !doesExist {
+			// Inherit fsnFlags from parent directory
+			w.fsnmut.Lock()
+			if flags, found := w.fsnFlags[dirPath]; found {
+				w.fsnFlags[filePath] = flags
+			} else {
+				w.fsnFlags[filePath] = FSN_ALL
+			}
+			w.fsnmut.Unlock()
+
+			// Send create event
+			fileEvent := new(FileEvent)
+			fileEvent.Name = filePath
+			fileEvent.create = true
+			w.internalEvent <- fileEvent
+		}
+		w.femut.Lock()
+		w.fileExists[filePath] = true
+		w.femut.Unlock()
+	}
+	w.watchDirectoryFiles(dirPath)
+}

vendor/github.com/howeyc/fsnotify/fsnotify_linux.go

@@ -0,0 +1,304 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package fsnotify
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+	"sync"
+	"syscall"
+	"unsafe"
+)
+
+const (
+	// Options for inotify_init() are not exported
+	// sys_IN_CLOEXEC    uint32 = syscall.IN_CLOEXEC
+	// sys_IN_NONBLOCK   uint32 = syscall.IN_NONBLOCK
+
+	// Options for AddWatch
+	sys_IN_DONT_FOLLOW uint32 = syscall.IN_DONT_FOLLOW
+	sys_IN_ONESHOT     uint32 = syscall.IN_ONESHOT
+	sys_IN_ONLYDIR     uint32 = syscall.IN_ONLYDIR
+
+	// The "sys_IN_MASK_ADD" option is not exported, as AddWatch
+	// adds it automatically, if there is already a watch for the given path
+	// sys_IN_MASK_ADD      uint32 = syscall.IN_MASK_ADD
+
+	// Events
+	sys_IN_ACCESS        uint32 = syscall.IN_ACCESS
+	sys_IN_ALL_EVENTS    uint32 = syscall.IN_ALL_EVENTS
+	sys_IN_ATTRIB        uint32 = syscall.IN_ATTRIB
+	sys_IN_CLOSE         uint32 = syscall.IN_CLOSE
+	sys_IN_CLOSE_NOWRITE uint32 = syscall.IN_CLOSE_NOWRITE
+	sys_IN_CLOSE_WRITE   uint32 = syscall.IN_CLOSE_WRITE
+	sys_IN_CREATE        uint32 = syscall.IN_CREATE
+	sys_IN_DELETE        uint32 = syscall.IN_DELETE
+	sys_IN_DELETE_SELF   uint32 = syscall.IN_DELETE_SELF
+	sys_IN_MODIFY        uint32 = syscall.IN_MODIFY
+	sys_IN_MOVE          uint32 = syscall.IN_MOVE
+	sys_IN_MOVED_FROM    uint32 = syscall.IN_MOVED_FROM
+	sys_IN_MOVED_TO      uint32 = syscall.IN_MOVED_TO
+	sys_IN_MOVE_SELF     uint32 = syscall.IN_MOVE_SELF
+	sys_IN_OPEN          uint32 = syscall.IN_OPEN
+
+	sys_AGNOSTIC_EVENTS = sys_IN_MOVED_TO | sys_IN_MOVED_FROM | sys_IN_CREATE | sys_IN_ATTRIB | sys_IN_MODIFY | sys_IN_MOVE_SELF | sys_IN_DELETE | sys_IN_DELETE_SELF
+
+	// Special events
+	sys_IN_ISDIR      uint32 = syscall.IN_ISDIR
+	sys_IN_IGNORED    uint32 = syscall.IN_IGNORED
+	sys_IN_Q_OVERFLOW uint32 = syscall.IN_Q_OVERFLOW
+	sys_IN_UNMOUNT    uint32 = syscall.IN_UNMOUNT
+)
+
+type FileEvent struct {
+	mask   uint32 // Mask of events
+	cookie uint32 // Unique cookie associating related events (for rename(2))
+	Name   string // File name (optional)
+}
+
+// IsCreate reports whether the FileEvent was triggered by a creation
+func (e *FileEvent) IsCreate() bool {
+	return (e.mask&sys_IN_CREATE) == sys_IN_CREATE || (e.mask&sys_IN_MOVED_TO) == sys_IN_MOVED_TO
+}
+
+// IsDelete reports whether the FileEvent was triggered by a delete
+func (e *FileEvent) IsDelete() bool {
+	return (e.mask&sys_IN_DELETE_SELF) == sys_IN_DELETE_SELF || (e.mask&sys_IN_DELETE) == sys_IN_DELETE
+}
+
+// IsModify reports whether the FileEvent was triggered by a file modification or attribute change
+func (e *FileEvent) IsModify() bool {
+	return ((e.mask&sys_IN_MODIFY) == sys_IN_MODIFY || (e.mask&sys_IN_ATTRIB) == sys_IN_ATTRIB)
+}
+
+// IsRename reports whether the FileEvent was triggered by a change name
+func (e *FileEvent) IsRename() bool {
+	return ((e.mask&sys_IN_MOVE_SELF) == sys_IN_MOVE_SELF || (e.mask&sys_IN_MOVED_FROM) == sys_IN_MOVED_FROM)
+}
+
+// IsAttrib reports whether the FileEvent was triggered by a change in the file metadata.
+func (e *FileEvent) IsAttrib() bool {
+	return (e.mask & sys_IN_ATTRIB) == sys_IN_ATTRIB
+}
+
+type watch struct {
+	wd    uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall)
+	flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags)
+}
+
+type Watcher struct {
+	mu            sync.Mutex        // Map access
+	fd            int               // File descriptor (as returned by the inotify_init() syscall)
+	watches       map[string]*watch // Map of inotify watches (key: path)
+	fsnFlags      map[string]uint32 // Map of watched files to flags used for filter
+	fsnmut        sync.Mutex        // Protects access to fsnFlags.
+	paths         map[int]string    // Map of watched paths (key: watch descriptor)
+	Error         chan error        // Errors are sent on this channel
+	internalEvent chan *FileEvent   // Events are queued on this channel
+	Event         chan *FileEvent   // Events are returned on this channel
+	done          chan bool         // Channel for sending a "quit message" to the reader goroutine
+	isClosed      bool              // Set to true when Close() is first called
+}
+
+// NewWatcher creates and returns a new inotify instance using inotify_init(2)
+func NewWatcher() (*Watcher, error) {
+	fd, errno := syscall.InotifyInit()
+	if fd == -1 {
+		return nil, os.NewSyscallError("inotify_init", errno)
+	}
+	w := &Watcher{
+		fd:            fd,
+		watches:       make(map[string]*watch),
+		fsnFlags:      make(map[string]uint32),
+		paths:         make(map[int]string),
+		internalEvent: make(chan *FileEvent),
+		Event:         make(chan *FileEvent),
+		Error:         make(chan error),
+		done:          make(chan bool, 1),
+	}
+
+	go w.readEvents()
+	go w.purgeEvents()
+	return w, nil
+}
+
+// Close closes an inotify watcher instance
+// It sends a message to the reader goroutine to quit and removes all watches
+// associated with the inotify instance
+func (w *Watcher) Close() error {
+	if w.isClosed {
+		return nil
+	}
+	w.isClosed = true
+
+	// Remove all watches
+	for path := range w.watches {
+		w.RemoveWatch(path)
+	}
+
+	// Send "quit" message to the reader goroutine
+	w.done <- true
+
+	return nil
+}
+
+// AddWatch adds path to the watched file set.
+// The flags are interpreted as described in inotify_add_watch(2).
+func (w *Watcher) addWatch(path string, flags uint32) error {
+	if w.isClosed {
+		return errors.New("inotify instance already closed")
+	}
+
+	w.mu.Lock()
+	watchEntry, found := w.watches[path]
+	w.mu.Unlock()
+	if found {
+		watchEntry.flags |= flags
+		flags |= syscall.IN_MASK_ADD
+	}
+	wd, errno := syscall.InotifyAddWatch(w.fd, path, flags)
+	if wd == -1 {
+		return errno
+	}
+
+	w.mu.Lock()
+	w.watches[path] = &watch{wd: uint32(wd), flags: flags}
+	w.paths[wd] = path
+	w.mu.Unlock()
+
+	return nil
+}
+
+// Watch adds path to the watched file set, watching all events.
+func (w *Watcher) watch(path string) error {
+	return w.addWatch(path, sys_AGNOSTIC_EVENTS)
+}
+
+// RemoveWatch removes path from the watched file set.
+func (w *Watcher) removeWatch(path string) error {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+	watch, ok := w.watches[path]
+	if !ok {
+		return errors.New(fmt.Sprintf("can't remove non-existent inotify watch for: %s", path))
+	}
+	success, errno := syscall.InotifyRmWatch(w.fd, watch.wd)
+	if success == -1 {
+		return os.NewSyscallError("inotify_rm_watch", errno)
+	}
+	delete(w.watches, path)
+	return nil
+}
+
+// readEvents reads from the inotify file descriptor, converts the
+// received events into Event objects and sends them via the Event channel
+func (w *Watcher) readEvents() {
+	var (
+		buf   [syscall.SizeofInotifyEvent * 4096]byte // Buffer for a maximum of 4096 raw events
+		n     int                                     // Number of bytes read with read()
+		errno error                                   // Syscall errno
+	)
+
+	for {
+		// See if there is a message on the "done" channel
+		select {
+		case <-w.done:
+			syscall.Close(w.fd)
+			close(w.internalEvent)
+			close(w.Error)
+			return
+		default:
+		}
+
+		n, errno = syscall.Read(w.fd, buf[:])
+
+		// If EOF is received
+		if n == 0 {
+			syscall.Close(w.fd)
+			close(w.internalEvent)
+			close(w.Error)
+			return
+		}
+
+		if n < 0 {
+			w.Error <- os.NewSyscallError("read", errno)
+			continue
+		}
+		if n < syscall.SizeofInotifyEvent {
+			w.Error <- errors.New("inotify: short read in readEvents()")
+			continue
+		}
+
+		var offset uint32 = 0
+		// We don't know how many events we just read into the buffer
+		// While the offset points to at least one whole event...
+		for offset <= uint32(n-syscall.SizeofInotifyEvent) {
+			// Point "raw" to the event in the buffer
+			raw := (*syscall.InotifyEvent)(unsafe.Pointer(&buf[offset]))
+			event := new(FileEvent)
+			event.mask = uint32(raw.Mask)
+			event.cookie = uint32(raw.Cookie)
+			nameLen := uint32(raw.Len)
+			// If the event happened to the watched directory or the watched file, the kernel
+			// doesn't append the filename to the event, but we would like to always fill the
+			// the "Name" field with a valid filename. We retrieve the path of the watch from
+			// the "paths" map.
+			w.mu.Lock()
+			event.Name = w.paths[int(raw.Wd)]
+			w.mu.Unlock()
+			watchedName := event.Name
+			if nameLen > 0 {
+				// Point "bytes" at the first byte of the filename
+				bytes := (*[syscall.PathMax]byte)(unsafe.Pointer(&buf[offset+syscall.SizeofInotifyEvent]))
+				// The filename is padded with NUL bytes. TrimRight() gets rid of those.
+				event.Name += "/" + strings.TrimRight(string(bytes[0:nameLen]), "\000")
+			}
+
+			// Send the events that are not ignored on the events channel
+			if !event.ignoreLinux() {
+				// Setup FSNotify flags (inherit from directory watch)
+				w.fsnmut.Lock()
+				if _, fsnFound := w.fsnFlags[event.Name]; !fsnFound {
+					if fsnFlags, watchFound := w.fsnFlags[watchedName]; watchFound {
+						w.fsnFlags[event.Name] = fsnFlags
+					} else {
+						w.fsnFlags[event.Name] = FSN_ALL
+					}
+				}
+				w.fsnmut.Unlock()
+
+				w.internalEvent <- event
+			}
+
+			// Move to the next event in the buffer
+			offset += syscall.SizeofInotifyEvent + nameLen
+		}
+	}
+}
+
+// Certain types of events can be "ignored" and not sent over the Event
+// channel. Such as events marked ignore by the kernel, or MODIFY events
+// against files that do not exist.
+func (e *FileEvent) ignoreLinux() bool {
+	// Ignore anything the inotify API says to ignore
+	if e.mask&sys_IN_IGNORED == sys_IN_IGNORED {
+		return true
+	}
+
+	// If the event is not a DELETE or RENAME, the file must exist.
+	// Otherwise the event is ignored.
+	// *Note*: this was put in place because it was seen that a MODIFY
+	// event was sent after the DELETE. This ignores that MODIFY and
+	// assumes a DELETE will come or has come if the file doesn't exist.
+	if !(e.IsDelete() || e.IsRename()) {
+		_, statErr := os.Lstat(e.Name)
+		return os.IsNotExist(statErr)
+	}
+	return false
+}

vendor/github.com/howeyc/fsnotify/fsnotify_open_bsd.go

@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd dragonfly
+
+package fsnotify
+
+import "syscall"
+
+const open_FLAGS = syscall.O_NONBLOCK | syscall.O_RDONLY

vendor/github.com/howeyc/fsnotify/fsnotify_open_darwin.go

@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin
+
+package fsnotify
+
+import "syscall"
+
+const open_FLAGS = syscall.O_EVTONLY

vendor/github.com/howeyc/fsnotify/fsnotify_windows.go

@@ -0,0 +1,598 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows
+
+package fsnotify
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sync"
+	"syscall"
+	"unsafe"
+)
+
+const (
+	// Options for AddWatch
+	sys_FS_ONESHOT = 0x80000000
+	sys_FS_ONLYDIR = 0x1000000
+
+	// Events
+	sys_FS_ACCESS      = 0x1
+	sys_FS_ALL_EVENTS  = 0xfff
+	sys_FS_ATTRIB      = 0x4
+	sys_FS_CLOSE       = 0x18
+	sys_FS_CREATE      = 0x100
+	sys_FS_DELETE      = 0x200
+	sys_FS_DELETE_SELF = 0x400
+	sys_FS_MODIFY      = 0x2
+	sys_FS_MOVE        = 0xc0
+	sys_FS_MOVED_FROM  = 0x40
+	sys_FS_MOVED_TO    = 0x80
+	sys_FS_MOVE_SELF   = 0x800
+
+	// Special events
+	sys_FS_IGNORED    = 0x8000
+	sys_FS_Q_OVERFLOW = 0x4000
+)
+
+const (
+	// TODO(nj): Use syscall.ERROR_MORE_DATA from ztypes_windows in Go 1.3+
+	sys_ERROR_MORE_DATA syscall.Errno = 234
+)
+
+// Event is the type of the notification messages
+// received on the watcher's Event channel.
+type FileEvent struct {
+	mask   uint32 // Mask of events
+	cookie uint32 // Unique cookie associating related events (for rename)
+	Name   string // File name (optional)
+}
+
+// IsCreate reports whether the FileEvent was triggered by a creation
+func (e *FileEvent) IsCreate() bool { return (e.mask & sys_FS_CREATE) == sys_FS_CREATE }
+
+// IsDelete reports whether the FileEvent was triggered by a delete
+func (e *FileEvent) IsDelete() bool {
+	return ((e.mask&sys_FS_DELETE) == sys_FS_DELETE || (e.mask&sys_FS_DELETE_SELF) == sys_FS_DELETE_SELF)
+}
+
+// IsModify reports whether the FileEvent was triggered by a file modification or attribute change
+func (e *FileEvent) IsModify() bool {
+	return ((e.mask&sys_FS_MODIFY) == sys_FS_MODIFY || (e.mask&sys_FS_ATTRIB) == sys_FS_ATTRIB)
+}
+
+// IsRename reports whether the FileEvent was triggered by a change name
+func (e *FileEvent) IsRename() bool {
+	return ((e.mask&sys_FS_MOVE) == sys_FS_MOVE || (e.mask&sys_FS_MOVE_SELF) == sys_FS_MOVE_SELF || (e.mask&sys_FS_MOVED_FROM) == sys_FS_MOVED_FROM || (e.mask&sys_FS_MOVED_TO) == sys_FS_MOVED_TO)
+}
+
+// IsAttrib reports whether the FileEvent was triggered by a change in the file metadata.
+func (e *FileEvent) IsAttrib() bool {
+	return (e.mask & sys_FS_ATTRIB) == sys_FS_ATTRIB
+}
+
+const (
+	opAddWatch = iota
+	opRemoveWatch
+)
+
+const (
+	provisional uint64 = 1 << (32 + iota)
+)
+
+type input struct {
+	op    int
+	path  string
+	flags uint32
+	reply chan error
+}
+
+type inode struct {
+	handle syscall.Handle
+	volume uint32
+	index  uint64
+}
+
+type watch struct {
+	ov     syscall.Overlapped
+	ino    *inode            // i-number
+	path   string            // Directory path
+	mask   uint64            // Directory itself is being watched with these notify flags
+	names  map[string]uint64 // Map of names being watched and their notify flags
+	rename string            // Remembers the old name while renaming a file
+	buf    [4096]byte
+}
+
+type indexMap map[uint64]*watch
+type watchMap map[uint32]indexMap
+
+// A Watcher waits for and receives event notifications
+// for a specific set of files and directories.
+type Watcher struct {
+	mu            sync.Mutex        // Map access
+	port          syscall.Handle    // Handle to completion port
+	watches       watchMap          // Map of watches (key: i-number)
+	fsnFlags      map[string]uint32 // Map of watched files to flags used for filter
+	fsnmut        sync.Mutex        // Protects access to fsnFlags.
+	input         chan *input       // Inputs to the reader are sent on this channel
+	internalEvent chan *FileEvent   // Events are queued on this channel
+	Event         chan *FileEvent   // Events are returned on this channel
+	Error         chan error        // Errors are sent on this channel
+	isClosed      bool              // Set to true when Close() is first called
+	quit          chan chan<- error
+	cookie        uint32
+}
+
+// NewWatcher creates and returns a Watcher.
+func NewWatcher() (*Watcher, error) {
+	port, e := syscall.CreateIoCompletionPort(syscall.InvalidHandle, 0, 0, 0)
+	if e != nil {
+		return nil, os.NewSyscallError("CreateIoCompletionPort", e)
+	}
+	w := &Watcher{
+		port:          port,
+		watches:       make(watchMap),
+		fsnFlags:      make(map[string]uint32),
+		input:         make(chan *input, 1),
+		Event:         make(chan *FileEvent, 50),
+		internalEvent: make(chan *FileEvent),
+		Error:         make(chan error),
+		quit:          make(chan chan<- error, 1),
+	}
+	go w.readEvents()
+	go w.purgeEvents()
+	return w, nil
+}
+
+// Close closes a Watcher.
+// It sends a message to the reader goroutine to quit and removes all watches
+// associated with the watcher.
+func (w *Watcher) Close() error {
+	if w.isClosed {
+		return nil
+	}
+	w.isClosed = true
+
+	// Send "quit" message to the reader goroutine
+	ch := make(chan error)
+	w.quit <- ch
+	if err := w.wakeupReader(); err != nil {
+		return err
+	}
+	return <-ch
+}
+
+// AddWatch adds path to the watched file set.
+func (w *Watcher) AddWatch(path string, flags uint32) error {
+	if w.isClosed {
+		return errors.New("watcher already closed")
+	}
+	in := &input{
+		op:    opAddWatch,
+		path:  filepath.Clean(path),
+		flags: flags,
+		reply: make(chan error),
+	}
+	w.input <- in
+	if err := w.wakeupReader(); err != nil {
+		return err
+	}
+	return <-in.reply
+}
+
+// Watch adds path to the watched file set, watching all events.
+func (w *Watcher) watch(path string) error {
+	return w.AddWatch(path, sys_FS_ALL_EVENTS)
+}
+
+// RemoveWatch removes path from the watched file set.
+func (w *Watcher) removeWatch(path string) error {
+	in := &input{
+		op:    opRemoveWatch,
+		path:  filepath.Clean(path),
+		reply: make(chan error),
+	}
+	w.input <- in
+	if err := w.wakeupReader(); err != nil {
+		return err
+	}
+	return <-in.reply
+}
+
+func (w *Watcher) wakeupReader() error {
+	e := syscall.PostQueuedCompletionStatus(w.port, 0, 0, nil)
+	if e != nil {
+		return os.NewSyscallError("PostQueuedCompletionStatus", e)
+	}
+	return nil
+}
+
+func getDir(pathname string) (dir string, err error) {
+	attr, e := syscall.GetFileAttributes(syscall.StringToUTF16Ptr(pathname))
+	if e != nil {
+		return "", os.NewSyscallError("GetFileAttributes", e)
+	}
+	if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
+		dir = pathname
+	} else {
+		dir, _ = filepath.Split(pathname)
+		dir = filepath.Clean(dir)
+	}
+	return
+}
+
+func getIno(path string) (ino *inode, err error) {
+	h, e := syscall.CreateFile(syscall.StringToUTF16Ptr(path),
+		syscall.FILE_LIST_DIRECTORY,
+		syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE,
+		nil, syscall.OPEN_EXISTING,
+		syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OVERLAPPED, 0)
+	if e != nil {
+		return nil, os.NewSyscallError("CreateFile", e)
+	}
+	var fi syscall.ByHandleFileInformation
+	if e = syscall.GetFileInformationByHandle(h, &fi); e != nil {
+		syscall.CloseHandle(h)
+		return nil, os.NewSyscallError("GetFileInformationByHandle", e)
+	}
+	ino = &inode{
+		handle: h,
+		volume: fi.VolumeSerialNumber,
+		index:  uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow),
+	}
+	return ino, nil
+}
+
+// Must run within the I/O thread.
+func (m watchMap) get(ino *inode) *watch {
+	if i := m[ino.volume]; i != nil {
+		return i[ino.index]
+	}
+	return nil
+}
+
+// Must run within the I/O thread.
+func (m watchMap) set(ino *inode, watch *watch) {
+	i := m[ino.volume]
+	if i == nil {
+		i = make(indexMap)
+		m[ino.volume] = i
+	}
+	i[ino.index] = watch
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) addWatch(pathname string, flags uint64) error {
+	dir, err := getDir(pathname)
+	if err != nil {
+		return err
+	}
+	if flags&sys_FS_ONLYDIR != 0 && pathname != dir {
+		return nil
+	}
+	ino, err := getIno(dir)
+	if err != nil {
+		return err
+	}
+	w.mu.Lock()
+	watchEntry := w.watches.get(ino)
+	w.mu.Unlock()
+	if watchEntry == nil {
+		if _, e := syscall.CreateIoCompletionPort(ino.handle, w.port, 0, 0); e != nil {
+			syscall.CloseHandle(ino.handle)
+			return os.NewSyscallError("CreateIoCompletionPort", e)
+		}
+		watchEntry = &watch{
+			ino:   ino,
+			path:  dir,
+			names: make(map[string]uint64),
+		}
+		w.mu.Lock()
+		w.watches.set(ino, watchEntry)
+		w.mu.Unlock()
+		flags |= provisional
+	} else {
+		syscall.CloseHandle(ino.handle)
+	}
+	if pathname == dir {
+		watchEntry.mask |= flags
+	} else {
+		watchEntry.names[filepath.Base(pathname)] |= flags
+	}
+	if err = w.startRead(watchEntry); err != nil {
+		return err
+	}
+	if pathname == dir {
+		watchEntry.mask &= ^provisional
+	} else {
+		watchEntry.names[filepath.Base(pathname)] &= ^provisional
+	}
+	return nil
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) remWatch(pathname string) error {
+	dir, err := getDir(pathname)
+	if err != nil {
+		return err
+	}
+	ino, err := getIno(dir)
+	if err != nil {
+		return err
+	}
+	w.mu.Lock()
+	watch := w.watches.get(ino)
+	w.mu.Unlock()
+	if watch == nil {
+		return fmt.Errorf("can't remove non-existent watch for: %s", pathname)
+	}
+	if pathname == dir {
+		w.sendEvent(watch.path, watch.mask&sys_FS_IGNORED)
+		watch.mask = 0
+	} else {
+		name := filepath.Base(pathname)
+		w.sendEvent(watch.path+"\\"+name, watch.names[name]&sys_FS_IGNORED)
+		delete(watch.names, name)
+	}
+	return w.startRead(watch)
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) deleteWatch(watch *watch) {
+	for name, mask := range watch.names {
+		if mask&provisional == 0 {
+			w.sendEvent(watch.path+"\\"+name, mask&sys_FS_IGNORED)
+		}
+		delete(watch.names, name)
+	}
+	if watch.mask != 0 {
+		if watch.mask&provisional == 0 {
+			w.sendEvent(watch.path, watch.mask&sys_FS_IGNORED)
+		}
+		watch.mask = 0
+	}
+}
+
+// Must run within the I/O thread.
+func (w *Watcher) startRead(watch *watch) error {
+	if e := syscall.CancelIo(watch.ino.handle); e != nil {
+		w.Error <- os.NewSyscallError("CancelIo", e)
+		w.deleteWatch(watch)
+	}
+	mask := toWindowsFlags(watch.mask)
+	for _, m := range watch.names {
+		mask |= toWindowsFlags(m)
+	}
+	if mask == 0 {
+		if e := syscall.CloseHandle(watch.ino.handle); e != nil {
+			w.Error <- os.NewSyscallError("CloseHandle", e)
+		}
+		w.mu.Lock()
+		delete(w.watches[watch.ino.volume], watch.ino.index)
+		w.mu.Unlock()
+		return nil
+	}
+	e := syscall.ReadDirectoryChanges(watch.ino.handle, &watch.buf[0],
+		uint32(unsafe.Sizeof(watch.buf)), false, mask, nil, &watch.ov, 0)
+	if e != nil {
+		err := os.NewSyscallError("ReadDirectoryChanges", e)
+		if e == syscall.ERROR_ACCESS_DENIED && watch.mask&provisional == 0 {
+			// Watched directory was probably removed
+			if w.sendEvent(watch.path, watch.mask&sys_FS_DELETE_SELF) {
+				if watch.mask&sys_FS_ONESHOT != 0 {
+					watch.mask = 0
+				}
+			}
+			err = nil
+		}
+		w.deleteWatch(watch)
+		w.startRead(watch)
+		return err
+	}
+	return nil
+}
+
+// readEvents reads from the I/O completion port, converts the
+// received events into Event objects and sends them via the Event channel.
+// Entry point to the I/O thread.
+func (w *Watcher) readEvents() {
+	var (
+		n, key uint32
+		ov     *syscall.Overlapped
+	)
+	runtime.LockOSThread()
+
+	for {
+		e := syscall.GetQueuedCompletionStatus(w.port, &n, &key, &ov, syscall.INFINITE)
+		watch := (*watch)(unsafe.Pointer(ov))
+
+		if watch == nil {
+			select {
+			case ch := <-w.quit:
+				w.mu.Lock()
+				var indexes []indexMap
+				for _, index := range w.watches {
+					indexes = append(indexes, index)
+				}
+				w.mu.Unlock()
+				for _, index := range indexes {
+					for _, watch := range index {
+						w.deleteWatch(watch)
+						w.startRead(watch)
+					}
+				}
+				var err error
+				if e := syscall.CloseHandle(w.port); e != nil {
+					err = os.NewSyscallError("CloseHandle", e)
+				}
+				close(w.internalEvent)
+				close(w.Error)
+				ch <- err
+				return
+			case in := <-w.input:
+				switch in.op {
+				case opAddWatch:
+					in.reply <- w.addWatch(in.path, uint64(in.flags))
+				case opRemoveWatch:
+					in.reply <- w.remWatch(in.path)
+				}
+			default:
+			}
+			continue
+		}
+
+		switch e {
+		case sys_ERROR_MORE_DATA:
+			if watch == nil {
+				w.Error <- errors.New("ERROR_MORE_DATA has unexpectedly null lpOverlapped buffer")
+			} else {
+				// The i/o succeeded but the buffer is full.
+				// In theory we should be building up a full packet.
+				// In practice we can get away with just carrying on.
+				n = uint32(unsafe.Sizeof(watch.buf))
+			}
+		case syscall.ERROR_ACCESS_DENIED:
+			// Watched directory was probably removed
+			w.sendEvent(watch.path, watch.mask&sys_FS_DELETE_SELF)
+			w.deleteWatch(watch)
+			w.startRead(watch)
+			continue
+		case syscall.ERROR_OPERATION_ABORTED:
+			// CancelIo was called on this handle
+			continue
+		default:
+			w.Error <- os.NewSyscallError("GetQueuedCompletionPort", e)
+			continue
+		case nil:
+		}
+
+		var offset uint32
+		for {
+			if n == 0 {
+				w.internalEvent <- &FileEvent{mask: sys_FS_Q_OVERFLOW}
+				w.Error <- errors.New("short read in readEvents()")
+				break
+			}
+
+			// Point "raw" to the event in the buffer
+			raw := (*syscall.FileNotifyInformation)(unsafe.Pointer(&watch.buf[offset]))
+			buf := (*[syscall.MAX_PATH]uint16)(unsafe.Pointer(&raw.FileName))
+			name := syscall.UTF16ToString(buf[:raw.FileNameLength/2])
+			fullname := watch.path + "\\" + name
+
+			var mask uint64
+			switch raw.Action {
+			case syscall.FILE_ACTION_REMOVED:
+				mask = sys_FS_DELETE_SELF
+			case syscall.FILE_ACTION_MODIFIED:
+				mask = sys_FS_MODIFY
+			case syscall.FILE_ACTION_RENAMED_OLD_NAME:
+				watch.rename = name
+			case syscall.FILE_ACTION_RENAMED_NEW_NAME:
+				if watch.names[watch.rename] != 0 {
+					watch.names[name] |= watch.names[watch.rename]
+					delete(watch.names, watch.rename)
+					mask = sys_FS_MOVE_SELF
+				}
+			}
+
+			sendNameEvent := func() {
+				if w.sendEvent(fullname, watch.names[name]&mask) {
+					if watch.names[name]&sys_FS_ONESHOT != 0 {
+						delete(watch.names, name)
+					}
+				}
+			}
+			if raw.Action != syscall.FILE_ACTION_RENAMED_NEW_NAME {
+				sendNameEvent()
+			}
+			if raw.Action == syscall.FILE_ACTION_REMOVED {
+				w.sendEvent(fullname, watch.names[name]&sys_FS_IGNORED)
+				delete(watch.names, name)
+			}
+			if w.sendEvent(fullname, watch.mask&toFSnotifyFlags(raw.Action)) {
+				if watch.mask&sys_FS_ONESHOT != 0 {
+					watch.mask = 0
+				}
+			}
+			if raw.Action == syscall.FILE_ACTION_RENAMED_NEW_NAME {
+				fullname = watch.path + "\\" + watch.rename
+				sendNameEvent()
+			}
+
+			// Move to the next event in the buffer
+			if raw.NextEntryOffset == 0 {
+				break
+			}
+			offset += raw.NextEntryOffset
+
+			// Error!
+			if offset >= n {
+				w.Error <- errors.New("Windows system assumed buffer larger than it is, events have likely been missed.")
+				break
+			}
+		}
+
+		if err := w.startRead(watch); err != nil {
+			w.Error <- err
+		}
+	}
+}
+
+func (w *Watcher) sendEvent(name string, mask uint64) bool {
+	if mask == 0 {
+		return false
+	}
+	event := &FileEvent{mask: uint32(mask), Name: name}
+	if mask&sys_FS_MOVE != 0 {
+		if mask&sys_FS_MOVED_FROM != 0 {
+			w.cookie++
+		}
+		event.cookie = w.cookie
+	}
+	select {
+	case ch := <-w.quit:
+		w.quit <- ch
+	case w.Event <- event:
+	}
+	return true
+}
+
+func toWindowsFlags(mask uint64) uint32 {
+	var m uint32
+	if mask&sys_FS_ACCESS != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_LAST_ACCESS
+	}
+	if mask&sys_FS_MODIFY != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_LAST_WRITE
+	}
+	if mask&sys_FS_ATTRIB != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_ATTRIBUTES
+	}
+	if mask&(sys_FS_MOVE|sys_FS_CREATE|sys_FS_DELETE) != 0 {
+		m |= syscall.FILE_NOTIFY_CHANGE_FILE_NAME | syscall.FILE_NOTIFY_CHANGE_DIR_NAME
+	}
+	return m
+}
+
+func toFSnotifyFlags(action uint32) uint64 {
+	switch action {
+	case syscall.FILE_ACTION_ADDED:
+		return sys_FS_CREATE
+	case syscall.FILE_ACTION_REMOVED:
+		return sys_FS_DELETE
+	case syscall.FILE_ACTION_MODIFIED:
+		return sys_FS_MODIFY
+	case syscall.FILE_ACTION_RENAMED_OLD_NAME:
+		return sys_FS_MOVED_FROM
+	case syscall.FILE_ACTION_RENAMED_NEW_NAME:
+		return sys_FS_MOVED_TO
+	}
+	return 0
+}

vendor/github.com/prometheus/node_exporter/collector/collector.go

@@ -15,7 +15,6 @@
 package collector
 
 import (
-	"fmt"
 	"sync"
 	"time"
 
@@ -83,10 +82,12 @@ func NewNodeCollector(filters ...string) (*nodeCollector, error) {
 	for _, filter := range filters {
 		enabled, exist := collectorState[filter]
 		if !exist {
-			return nil, fmt.Errorf("missing collector: %s", filter)
+			log.Warnf("missing collector: %s", filter)
+			continue
 		}
 		if !*enabled {
-			return nil, fmt.Errorf("disabled collector: %s", filter)
+			log.Warnf("disabled collector: %s", filter)
+			continue
 		}
 		f[filter] = true
 	}

vendor/gopkg.in.o/mgo.v2/bson/LICENSE

@@ -1,25 +0,0 @@
-BSON library for Go
-
-Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met: 
-
-1. Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer. 
-2. Redistributions in binary form must reproduce the above copyright notice,
-   this list of conditions and the following disclaimer in the documentation
-   and/or other materials provided with the distribution. 
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/gopkg.in.o/mgo.v2/bson/bson.go

@@ -1,738 +0,0 @@
-// BSON library for Go
-//
-// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Package bson is an implementation of the BSON specification for Go:
-//
-//     http://bsonspec.org
-//
-// It was created as part of the mgo MongoDB driver for Go, but is standalone
-// and may be used on its own without the driver.
-package bson
-
-import (
-	"bytes"
-	"crypto/md5"
-	"crypto/rand"
-	"encoding/binary"
-	"encoding/hex"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io"
-	"os"
-	"reflect"
-	"runtime"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-// --------------------------------------------------------------------------
-// The public API.
-
-// A value implementing the bson.Getter interface will have its GetBSON
-// method called when the given value has to be marshalled, and the result
-// of this method will be marshaled in place of the actual object.
-//
-// If GetBSON returns return a non-nil error, the marshalling procedure
-// will stop and error out with the provided value.
-type Getter interface {
-	GetBSON() (interface{}, error)
-}
-
-// A value implementing the bson.Setter interface will receive the BSON
-// value via the SetBSON method during unmarshaling, and the object
-// itself will not be changed as usual.
-//
-// If setting the value works, the method should return nil or alternatively
-// bson.SetZero to set the respective field to its zero value (nil for
-// pointer types). If SetBSON returns a value of type bson.TypeError, the
-// BSON value will be omitted from a map or slice being decoded and the
-// unmarshalling will continue. If it returns any other non-nil error, the
-// unmarshalling procedure will stop and error out with the provided value.
-//
-// This interface is generally useful in pointer receivers, since the method
-// will want to change the receiver. A type field that implements the Setter
-// interface doesn't have to be a pointer, though.
-//
-// Unlike the usual behavior, unmarshalling onto a value that implements a
-// Setter interface will NOT reset the value to its zero state. This allows
-// the value to decide by itself how to be unmarshalled.
-//
-// For example:
-//
-//     type MyString string
-//
-//     func (s *MyString) SetBSON(raw bson.Raw) error {
-//         return raw.Unmarshal(s)
-//     }
-//
-type Setter interface {
-	SetBSON(raw Raw) error
-}
-
-// SetZero may be returned from a SetBSON method to have the value set to
-// its respective zero value. When used in pointer values, this will set the
-// field to nil rather than to the pre-allocated value.
-var SetZero = errors.New("set to zero")
-
-// M is a convenient alias for a map[string]interface{} map, useful for
-// dealing with BSON in a native way.  For instance:
-//
-//     bson.M{"a": 1, "b": true}
-//
-// There's no special handling for this type in addition to what's done anyway
-// for an equivalent map type.  Elements in the map will be dumped in an
-// undefined ordered. See also the bson.D type for an ordered alternative.
-type M map[string]interface{}
-
-// D represents a BSON document containing ordered elements. For example:
-//
-//     bson.D{{"a", 1}, {"b", true}}
-//
-// In some situations, such as when creating indexes for MongoDB, the order in
-// which the elements are defined is important.  If the order is not important,
-// using a map is generally more comfortable. See bson.M and bson.RawD.
-type D []DocElem
-
-// DocElem is an element of the bson.D document representation.
-type DocElem struct {
-	Name  string
-	Value interface{}
-}
-
-// Map returns a map out of the ordered element name/value pairs in d.
-func (d D) Map() (m M) {
-	m = make(M, len(d))
-	for _, item := range d {
-		m[item.Name] = item.Value
-	}
-	return m
-}
-
-// The Raw type represents raw unprocessed BSON documents and elements.
-// Kind is the kind of element as defined per the BSON specification, and
-// Data is the raw unprocessed data for the respective element.
-// Using this type it is possible to unmarshal or marshal values partially.
-//
-// Relevant documentation:
-//
-//     http://bsonspec.org/#/specification
-//
-type Raw struct {
-	Kind byte
-	Data []byte
-}
-
-// RawD represents a BSON document containing raw unprocessed elements.
-// This low-level representation may be useful when lazily processing
-// documents of uncertain content, or when manipulating the raw content
-// documents in general.
-type RawD []RawDocElem
-
-// See the RawD type.
-type RawDocElem struct {
-	Name  string
-	Value Raw
-}
-
-// ObjectId is a unique ID identifying a BSON value. It must be exactly 12 bytes
-// long. MongoDB objects by default have such a property set in their "_id"
-// property.
-//
-// http://www.mongodb.org/display/DOCS/Object+IDs
-type ObjectId string
-
-// ObjectIdHex returns an ObjectId from the provided hex representation.
-// Calling this function with an invalid hex representation will
-// cause a runtime panic. See the IsObjectIdHex function.
-func ObjectIdHex(s string) ObjectId {
-	d, err := hex.DecodeString(s)
-	if err != nil || len(d) != 12 {
-		panic(fmt.Sprintf("invalid input to ObjectIdHex: %q", s))
-	}
-	return ObjectId(d)
-}
-
-// IsObjectIdHex returns whether s is a valid hex representation of
-// an ObjectId. See the ObjectIdHex function.
-func IsObjectIdHex(s string) bool {
-	if len(s) != 24 {
-		return false
-	}
-	_, err := hex.DecodeString(s)
-	return err == nil
-}
-
-// objectIdCounter is atomically incremented when generating a new ObjectId
-// using NewObjectId() function. It's used as a counter part of an id.
-var objectIdCounter uint32 = readRandomUint32()
-
-// readRandomUint32 returns a random objectIdCounter.
-func readRandomUint32() uint32 {
-	var b [4]byte
-	_, err := io.ReadFull(rand.Reader, b[:])
-	if err != nil {
-		panic(fmt.Errorf("cannot read random object id: %v", err))
-	}
-	return uint32((uint32(b[0]) << 0) | (uint32(b[1]) << 8) | (uint32(b[2]) << 16) | (uint32(b[3]) << 24))
-}
-
-// machineId stores machine id generated once and used in subsequent calls
-// to NewObjectId function.
-var machineId = readMachineId()
-var processId = os.Getpid()
-
-// readMachineId generates and returns a machine id.
-// If this function fails to get the hostname it will cause a runtime error.
-func readMachineId() []byte {
-	var sum [3]byte
-	id := sum[:]
-	hostname, err1 := os.Hostname()
-	if err1 != nil {
-		_, err2 := io.ReadFull(rand.Reader, id)
-		if err2 != nil {
-			panic(fmt.Errorf("cannot get hostname: %v; %v", err1, err2))
-		}
-		return id
-	}
-	hw := md5.New()
-	hw.Write([]byte(hostname))
-	copy(id, hw.Sum(nil))
-	return id
-}
-
-// NewObjectId returns a new unique ObjectId.
-func NewObjectId() ObjectId {
-	var b [12]byte
-	// Timestamp, 4 bytes, big endian
-	binary.BigEndian.PutUint32(b[:], uint32(time.Now().Unix()))
-	// Machine, first 3 bytes of md5(hostname)
-	b[4] = machineId[0]
-	b[5] = machineId[1]
-	b[6] = machineId[2]
-	// Pid, 2 bytes, specs don't specify endianness, but we use big endian.
-	b[7] = byte(processId >> 8)
-	b[8] = byte(processId)
-	// Increment, 3 bytes, big endian
-	i := atomic.AddUint32(&objectIdCounter, 1)
-	b[9] = byte(i >> 16)
-	b[10] = byte(i >> 8)
-	b[11] = byte(i)
-	return ObjectId(b[:])
-}
-
-// NewObjectIdWithTime returns a dummy ObjectId with the timestamp part filled
-// with the provided number of seconds from epoch UTC, and all other parts
-// filled with zeroes. It's not safe to insert a document with an id generated
-// by this method, it is useful only for queries to find documents with ids
-// generated before or after the specified timestamp.
-func NewObjectIdWithTime(t time.Time) ObjectId {
-	var b [12]byte
-	binary.BigEndian.PutUint32(b[:4], uint32(t.Unix()))
-	return ObjectId(string(b[:]))
-}
-
-// String returns a hex string representation of the id.
-// Example: ObjectIdHex("4d88e15b60f486e428412dc9").
-func (id ObjectId) String() string {
-	return fmt.Sprintf(`ObjectIdHex("%x")`, string(id))
-}
-
-// Hex returns a hex representation of the ObjectId.
-func (id ObjectId) Hex() string {
-	return hex.EncodeToString([]byte(id))
-}
-
-// MarshalJSON turns a bson.ObjectId into a json.Marshaller.
-func (id ObjectId) MarshalJSON() ([]byte, error) {
-	return []byte(fmt.Sprintf(`"%x"`, string(id))), nil
-}
-
-var nullBytes = []byte("null")
-
-// UnmarshalJSON turns *bson.ObjectId into a json.Unmarshaller.
-func (id *ObjectId) UnmarshalJSON(data []byte) error {
-	if len(data) > 0 && (data[0] == '{' || data[0] == 'O') {
-		var v struct {
-			Id json.RawMessage `json:"$oid"`
-			Func struct {
-				Id json.RawMessage
-			} `json:"$oidFunc"`
-		}
-		err := jdec(data, &v)
-		if err == nil {
-			if len(v.Id) > 0 {
-				data = []byte(v.Id)
-			} else {
-				data = []byte(v.Func.Id)
-			}
-		}
-	}
-	if len(data) == 2 && data[0] == '"' && data[1] == '"' || bytes.Equal(data, nullBytes) {
-		*id = ""
-		return nil
-	}
-	if len(data) != 26 || data[0] != '"' || data[25] != '"' {
-		return errors.New(fmt.Sprintf("invalid ObjectId in JSON: %s", string(data)))
-	}
-	var buf [12]byte
-	_, err := hex.Decode(buf[:], data[1:25])
-	if err != nil {
-		return errors.New(fmt.Sprintf("invalid ObjectId in JSON: %s (%s)", string(data), err))
-	}
-	*id = ObjectId(string(buf[:]))
-	return nil
-}
-
-// MarshalText turns bson.ObjectId into an encoding.TextMarshaler.
-func (id ObjectId) MarshalText() ([]byte, error) {
-	return []byte(fmt.Sprintf("%x", string(id))), nil
-}
-
-// UnmarshalText turns *bson.ObjectId into an encoding.TextUnmarshaler.
-func (id *ObjectId) UnmarshalText(data []byte) error {
-	if len(data) == 1 && data[0] == ' ' || len(data) == 0 {
-		*id = ""
-		return nil
-	}
-	if len(data) != 24 {
-		return fmt.Errorf("invalid ObjectId: %s", data)
-	}
-	var buf [12]byte
-	_, err := hex.Decode(buf[:], data[:])
-	if err != nil {
-		return fmt.Errorf("invalid ObjectId: %s (%s)", data, err)
-	}
-	*id = ObjectId(string(buf[:]))
-	return nil
-}
-
-// Valid returns true if id is valid. A valid id must contain exactly 12 bytes.
-func (id ObjectId) Valid() bool {
-	return len(id) == 12
-}
-
-// byteSlice returns byte slice of id from start to end.
-// Calling this function with an invalid id will cause a runtime panic.
-func (id ObjectId) byteSlice(start, end int) []byte {
-	if len(id) != 12 {
-		panic(fmt.Sprintf("invalid ObjectId: %q", string(id)))
-	}
-	return []byte(string(id)[start:end])
-}
-
-// Time returns the timestamp part of the id.
-// It's a runtime error to call this method with an invalid id.
-func (id ObjectId) Time() time.Time {
-	// First 4 bytes of ObjectId is 32-bit big-endian seconds from epoch.
-	secs := int64(binary.BigEndian.Uint32(id.byteSlice(0, 4)))
-	return time.Unix(secs, 0)
-}
-
-// Machine returns the 3-byte machine id part of the id.
-// It's a runtime error to call this method with an invalid id.
-func (id ObjectId) Machine() []byte {
-	return id.byteSlice(4, 7)
-}
-
-// Pid returns the process id part of the id.
-// It's a runtime error to call this method with an invalid id.
-func (id ObjectId) Pid() uint16 {
-	return binary.BigEndian.Uint16(id.byteSlice(7, 9))
-}
-
-// Counter returns the incrementing value part of the id.
-// It's a runtime error to call this method with an invalid id.
-func (id ObjectId) Counter() int32 {
-	b := id.byteSlice(9, 12)
-	// Counter is stored as big-endian 3-byte value
-	return int32(uint32(b[0])<<16 | uint32(b[1])<<8 | uint32(b[2]))
-}
-
-// The Symbol type is similar to a string and is used in languages with a
-// distinct symbol type.
-type Symbol string
-
-// Now returns the current time with millisecond precision. MongoDB stores
-// timestamps with the same precision, so a Time returned from this method
-// will not change after a roundtrip to the database. That's the only reason
-// why this function exists. Using the time.Now function also works fine
-// otherwise.
-func Now() time.Time {
-	return time.Unix(0, time.Now().UnixNano()/1e6*1e6)
-}
-
-// MongoTimestamp is a special internal type used by MongoDB that for some
-// strange reason has its own datatype defined in BSON.
-type MongoTimestamp int64
-
-type orderKey int64
-
-// MaxKey is a special value that compares higher than all other possible BSON
-// values in a MongoDB database.
-var MaxKey = orderKey(1<<63 - 1)
-
-// MinKey is a special value that compares lower than all other possible BSON
-// values in a MongoDB database.
-var MinKey = orderKey(-1 << 63)
-
-type undefined struct{}
-
-// Undefined represents the undefined BSON value.
-var Undefined undefined
-
-// Binary is a representation for non-standard binary values.  Any kind should
-// work, but the following are known as of this writing:
-//
-//   0x00 - Generic. This is decoded as []byte(data), not Binary{0x00, data}.
-//   0x01 - Function (!?)
-//   0x02 - Obsolete generic.
-//   0x03 - UUID
-//   0x05 - MD5
-//   0x80 - User defined.
-//
-type Binary struct {
-	Kind byte
-	Data []byte
-}
-
-// RegEx represents a regular expression.  The Options field may contain
-// individual characters defining the way in which the pattern should be
-// applied, and must be sorted. Valid options as of this writing are 'i' for
-// case insensitive matching, 'm' for multi-line matching, 'x' for verbose
-// mode, 'l' to make \w, \W, and similar be locale-dependent, 's' for dot-all
-// mode (a '.' matches everything), and 'u' to make \w, \W, and similar match
-// unicode. The value of the Options parameter is not verified before being
-// marshaled into the BSON format.
-type RegEx struct {
-	Pattern string
-	Options string
-}
-
-// JavaScript is a type that holds JavaScript code. If Scope is non-nil, it
-// will be marshaled as a mapping from identifiers to values that may be
-// used when evaluating the provided Code.
-type JavaScript struct {
-	Code  string
-	Scope interface{}
-}
-
-// DBPointer refers to a document id in a namespace.
-//
-// This type is deprecated in the BSON specification and should not be used
-// except for backwards compatibility with ancient applications.
-type DBPointer struct {
-	Namespace string
-	Id        ObjectId
-}
-
-const initialBufferSize = 64
-
-func handleErr(err *error) {
-	if r := recover(); r != nil {
-		if _, ok := r.(runtime.Error); ok {
-			panic(r)
-		} else if _, ok := r.(externalPanic); ok {
-			panic(r)
-		} else if s, ok := r.(string); ok {
-			*err = errors.New(s)
-		} else if e, ok := r.(error); ok {
-			*err = e
-		} else {
-			panic(r)
-		}
-	}
-}
-
-// Marshal serializes the in value, which may be a map or a struct value.
-// In the case of struct values, only exported fields will be serialized,
-// and the order of serialized fields will match that of the struct itself.
-// The lowercased field name is used as the key for each exported field,
-// but this behavior may be changed using the respective field tag.
-// The tag may also contain flags to tweak the marshalling behavior for
-// the field. The tag formats accepted are:
-//
-//     "[<key>][,<flag1>[,<flag2>]]"
-//
-//     `(...) bson:"[<key>][,<flag1>[,<flag2>]]" (...)`
-//
-// The following flags are currently supported:
-//
-//     omitempty  Only include the field if it's not set to the zero
-//                value for the type or to empty slices or maps.
-//
-//     minsize    Marshal an int64 value as an int32, if that's feasible
-//                while preserving the numeric value.
-//
-//     inline     Inline the field, which must be a struct or a map,
-//                causing all of its fields or keys to be processed as if
-//                they were part of the outer struct. For maps, keys must
-//                not conflict with the bson keys of other struct fields.
-//
-// Some examples:
-//
-//     type T struct {
-//         A bool
-//         B int    "myb"
-//         C string "myc,omitempty"
-//         D string `bson:",omitempty" json:"jsonkey"`
-//         E int64  ",minsize"
-//         F int64  "myf,omitempty,minsize"
-//     }
-//
-func Marshal(in interface{}) (out []byte, err error) {
-	defer handleErr(&err)
-	e := &encoder{make([]byte, 0, initialBufferSize)}
-	e.addDoc(reflect.ValueOf(in))
-	return e.out, nil
-}
-
-// Unmarshal deserializes data from in into the out value.  The out value
-// must be a map, a pointer to a struct, or a pointer to a bson.D value.
-// In the case of struct values, only exported fields will be deserialized.
-// The lowercased field name is used as the key for each exported field,
-// but this behavior may be changed using the respective field tag.
-// The tag may also contain flags to tweak the marshalling behavior for
-// the field. The tag formats accepted are:
-//
-//     "[<key>][,<flag1>[,<flag2>]]"
-//
-//     `(...) bson:"[<key>][,<flag1>[,<flag2>]]" (...)`
-//
-// The following flags are currently supported during unmarshal (see the
-// Marshal method for other flags):
-//
-//     inline     Inline the field, which must be a struct or a map.
-//                Inlined structs are handled as if its fields were part
-//                of the outer struct. An inlined map causes keys that do
-//                not match any other struct field to be inserted in the
-//                map rather than being discarded as usual.
-//
-// The target field or element types of out may not necessarily match
-// the BSON values of the provided data.  The following conversions are
-// made automatically:
-//
-// - Numeric types are converted if at least the integer part of the
-//   value would be preserved correctly
-// - Bools are converted to numeric types as 1 or 0
-// - Numeric types are converted to bools as true if not 0 or false otherwise
-// - Binary and string BSON data is converted to a string, array or byte slice
-//
-// If the value would not fit the type and cannot be converted, it's
-// silently skipped.
-//
-// Pointer values are initialized when necessary.
-func Unmarshal(in []byte, out interface{}) (err error) {
-	if raw, ok := out.(*Raw); ok {
-		raw.Kind = 3
-		raw.Data = in
-		return nil
-	}
-	defer handleErr(&err)
-	v := reflect.ValueOf(out)
-	switch v.Kind() {
-	case reflect.Ptr:
-		fallthrough
-	case reflect.Map:
-		d := newDecoder(in)
-		d.readDocTo(v)
-	case reflect.Struct:
-		return errors.New("Unmarshal can't deal with struct values. Use a pointer.")
-	default:
-		return errors.New("Unmarshal needs a map or a pointer to a struct.")
-	}
-	return nil
-}
-
-// Unmarshal deserializes raw into the out value.  If the out value type
-// is not compatible with raw, a *bson.TypeError is returned.
-//
-// See the Unmarshal function documentation for more details on the
-// unmarshalling process.
-func (raw Raw) Unmarshal(out interface{}) (err error) {
-	defer handleErr(&err)
-	v := reflect.ValueOf(out)
-	switch v.Kind() {
-	case reflect.Ptr:
-		v = v.Elem()
-		fallthrough
-	case reflect.Map:
-		d := newDecoder(raw.Data)
-		good := d.readElemTo(v, raw.Kind)
-		if !good {
-			return &TypeError{v.Type(), raw.Kind}
-		}
-	case reflect.Struct:
-		return errors.New("Raw Unmarshal can't deal with struct values. Use a pointer.")
-	default:
-		return errors.New("Raw Unmarshal needs a map or a valid pointer.")
-	}
-	return nil
-}
-
-type TypeError struct {
-	Type reflect.Type
-	Kind byte
-}
-
-func (e *TypeError) Error() string {
-	return fmt.Sprintf("BSON kind 0x%02x isn't compatible with type %s", e.Kind, e.Type.String())
-}
-
-// --------------------------------------------------------------------------
-// Maintain a mapping of keys to structure field indexes
-
-type structInfo struct {
-	FieldsMap  map[string]fieldInfo
-	FieldsList []fieldInfo
-	InlineMap  int
-	Zero       reflect.Value
-}
-
-type fieldInfo struct {
-	Key       string
-	Num       int
-	OmitEmpty bool
-	MinSize   bool
-	Inline    []int
-}
-
-var structMap = make(map[reflect.Type]*structInfo)
-var structMapMutex sync.RWMutex
-
-type externalPanic string
-
-func (e externalPanic) String() string {
-	return string(e)
-}
-
-func getStructInfo(st reflect.Type) (*structInfo, error) {
-	structMapMutex.RLock()
-	sinfo, found := structMap[st]
-	structMapMutex.RUnlock()
-	if found {
-		return sinfo, nil
-	}
-	n := st.NumField()
-	fieldsMap := make(map[string]fieldInfo)
-	fieldsList := make([]fieldInfo, 0, n)
-	inlineMap := -1
-	for i := 0; i != n; i++ {
-		field := st.Field(i)
-		if field.PkgPath != "" && !field.Anonymous {
-			continue // Private field
-		}
-
-		info := fieldInfo{Num: i}
-
-		tag := field.Tag.Get("bson")
-		if tag == "" && strings.Index(string(field.Tag), ":") < 0 {
-			tag = string(field.Tag)
-		}
-		if tag == "-" {
-			continue
-		}
-
-		inline := false
-		fields := strings.Split(tag, ",")
-		if len(fields) > 1 {
-			for _, flag := range fields[1:] {
-				switch flag {
-				case "omitempty":
-					info.OmitEmpty = true
-				case "minsize":
-					info.MinSize = true
-				case "inline":
-					inline = true
-				default:
-					msg := fmt.Sprintf("Unsupported flag %q in tag %q of type %s", flag, tag, st)
-					panic(externalPanic(msg))
-				}
-			}
-			tag = fields[0]
-		}
-
-		if inline {
-			switch field.Type.Kind() {
-			case reflect.Map:
-				if inlineMap >= 0 {
-					return nil, errors.New("Multiple ,inline maps in struct " + st.String())
-				}
-				if field.Type.Key() != reflect.TypeOf("") {
-					return nil, errors.New("Option ,inline needs a map with string keys in struct " + st.String())
-				}
-				inlineMap = info.Num
-			case reflect.Struct:
-				sinfo, err := getStructInfo(field.Type)
-				if err != nil {
-					return nil, err
-				}
-				for _, finfo := range sinfo.FieldsList {
-					if _, found := fieldsMap[finfo.Key]; found {
-						msg := "Duplicated key '" + finfo.Key + "' in struct " + st.String()
-						return nil, errors.New(msg)
-					}
-					if finfo.Inline == nil {
-						finfo.Inline = []int{i, finfo.Num}
-					} else {
-						finfo.Inline = append([]int{i}, finfo.Inline...)
-					}
-					fieldsMap[finfo.Key] = finfo
-					fieldsList = append(fieldsList, finfo)
-				}
-			default:
-				panic("Option ,inline needs a struct value or map field")
-			}
-			continue
-		}
-
-		if tag != "" {
-			info.Key = tag
-		} else {
-			info.Key = strings.ToLower(field.Name)
-		}
-
-		if _, found = fieldsMap[info.Key]; found {
-			msg := "Duplicated key '" + info.Key + "' in struct " + st.String()
-			return nil, errors.New(msg)
-		}
-
-		fieldsList = append(fieldsList, info)
-		fieldsMap[info.Key] = info
-	}
-	sinfo = &structInfo{
-		fieldsMap,
-		fieldsList,
-		inlineMap,
-		reflect.New(st).Elem(),
-	}
-	structMapMutex.Lock()
-	structMap[st] = sinfo
-	structMapMutex.Unlock()
-	return sinfo, nil
-}

vendor/gopkg.in.o/mgo.v2/bson/decimal.go

@@ -1,310 +0,0 @@
-// BSON library for Go
-//
-// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package bson
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-// Decimal128 holds decimal128 BSON values.
-type Decimal128 struct {
-	h, l uint64
-}
-
-func (d Decimal128) String() string {
-	var pos int     // positive sign
-	var e int       // exponent
-	var h, l uint64 // significand high/low
-
-	if d.h>>63&1 == 0 {
-		pos = 1
-	}
-
-	switch d.h >> 58 & (1<<5 - 1) {
-	case 0x1F:
-		return "NaN"
-	case 0x1E:
-		return "-Inf"[pos:]
-	}
-
-	l = d.l
-	if d.h>>61&3 == 3 {
-		// Bits: 1*sign 2*ignored 14*exponent 111*significand.
-		// Implicit 0b100 prefix in significand.
-		e = int(d.h>>47&(1<<14-1)) - 6176
-		//h = 4<<47 | d.h&(1<<47-1)
-		// Spec says all of these values are out of range.
-		h, l = 0, 0
-	} else {
-		// Bits: 1*sign 14*exponent 113*significand
-		e = int(d.h>>49&(1<<14-1)) - 6176
-		h = d.h & (1<<49 - 1)
-	}
-
-	// Would be handled by the logic below, but that's trivial and common.
-	if h == 0 && l == 0 && e == 0 {
-		return "-0"[pos:]
-	}
-
-	var repr [48]byte // Loop 5 times over 9 digits plus dot, negative sign, and leading zero.
-	var last = len(repr)
-	var i = len(repr)
-	var dot = len(repr) + e
-	var rem uint32
-Loop:
-	for d9 := 0; d9 < 5; d9++ {
-		h, l, rem = divmod(h, l, 1e9)
-		for d1 := 0; d1 < 9; d1++ {
-			// Handle "-0.0", "0.00123400", "-1.00E-6", "1.050E+3", etc.
-			if i < len(repr) && (dot == i || l == 0 && h == 0 && rem > 0 && rem < 10 && (dot < i-6 || e > 0)) {
-				e += len(repr) - i
-				i--
-				repr[i] = '.'
-				last = i - 1
-				dot = len(repr) // Unmark.
-			}
-			c := '0' + byte(rem%10)
-			rem /= 10
-			i--
-			repr[i] = c
-			// Handle "0E+3", "1E+3", etc.
-			if l == 0 && h == 0 && rem == 0 && i == len(repr)-1 && (dot < i-5 || e > 0) {
-				last = i
-				break Loop
-			}
-			if c != '0' {
-				last = i
-			}
-			// Break early. Works without it, but why.
-			if dot > i && l == 0 && h == 0 && rem == 0 {
-				break Loop
-			}
-		}
-	}
-	repr[last-1] = '-'
-	last--
-
-	if e > 0 {
-		return string(repr[last+pos:]) + "E+" + strconv.Itoa(e)
-	}
-	if e < 0 {
-		return string(repr[last+pos:]) + "E" + strconv.Itoa(e)
-	}
-	return string(repr[last+pos:])
-}
-
-func divmod(h, l uint64, div uint32) (qh, ql uint64, rem uint32) {
-	div64 := uint64(div)
-	a := h >> 32
-	aq := a / div64
-	ar := a % div64
-	b := ar<<32 + h&(1<<32-1)
-	bq := b / div64
-	br := b % div64
-	c := br<<32 + l>>32
-	cq := c / div64
-	cr := c % div64
-	d := cr<<32 + l&(1<<32-1)
-	dq := d / div64
-	dr := d % div64
-	return (aq<<32 | bq), (cq<<32 | dq), uint32(dr)
-}
-
-var dNaN = Decimal128{0x1F << 58, 0}
-var dPosInf = Decimal128{0x1E << 58, 0}
-var dNegInf = Decimal128{0x3E << 58, 0}
-
-func dErr(s string) (Decimal128, error) {
-	return dNaN, fmt.Errorf("cannot parse %q as a decimal128", s)
-}
-
-func ParseDecimal128(s string) (Decimal128, error) {
-	orig := s
-	if s == "" {
-		return dErr(orig)
-	}
-	neg := s[0] == '-'
-	if neg || s[0] == '+' {
-		s = s[1:]
-	}
-
-	if (len(s) == 3 || len(s) == 8) && (s[0] == 'N' || s[0] == 'n' || s[0] == 'I' || s[0] == 'i') {
-		if s == "NaN" || s == "nan" || strings.EqualFold(s, "nan") {
-			return dNaN, nil
-		}
-		if s == "Inf" || s == "inf" || strings.EqualFold(s, "inf") || strings.EqualFold(s, "infinity") {
-			if neg {
-				return dNegInf, nil
-			}
-			return dPosInf, nil
-		}
-		return dErr(orig)
-	}
-
-	var h, l uint64
-	var e int
-
-	var add, ovr uint32
-	var mul uint32 = 1
-	var dot = -1
-	var digits = 0
-	var i = 0
-	for i < len(s) {
-		c := s[i]
-		if mul == 1e9 {
-			h, l, ovr = muladd(h, l, mul, add)
-			mul, add = 1, 0
-			if ovr > 0 || h&((1<<15-1)<<49) > 0 {
-				return dErr(orig)
-			}
-		}
-		if c >= '0' && c <= '9' {
-			i++
-			if c > '0' || digits > 0 {
-				digits++
-			}
-			if digits > 34 {
-				if c == '0' {
-					// Exact rounding.
-					e++
-					continue
-				}
-				return dErr(orig)
-			}
-			mul *= 10
-			add *= 10
-			add += uint32(c - '0')
-			continue
-		}
-		if c == '.' {
-			i++
-			if dot >= 0 || i == 1 && len(s) == 1 {
-				return dErr(orig)
-			}
-			if i == len(s) {
-				break
-			}
-			if s[i] < '0' || s[i] > '9' || e > 0 {
-				return dErr(orig)
-			}
-			dot = i
-			continue
-		}
-		break
-	}
-	if i == 0 {
-		return dErr(orig)
-	}
-	if mul > 1 {
-		h, l, ovr = muladd(h, l, mul, add)
-		if ovr > 0 || h&((1<<15-1)<<49) > 0 {
-			return dErr(orig)
-		}
-	}
-	if dot >= 0 {
-		e += dot - i
-	}
-	if i+1 < len(s) && (s[i] == 'E' || s[i] == 'e') {
-		i++
-		eneg := s[i] == '-'
-		if eneg || s[i] == '+' {
-			i++
-			if i == len(s) {
-				return dErr(orig)
-			}
-		}
-		n := 0
-		for i < len(s) && n < 1e4 {
-			c := s[i]
-			i++
-			if c < '0' || c > '9' {
-				return dErr(orig)
-			}
-			n *= 10
-			n += int(c - '0')
-		}
-		if eneg {
-			n = -n
-		}
-		e += n
-		for e < -6176 {
-			// Subnormal.
-			var div uint32 = 1
-			for div < 1e9 && e < -6176 {
-				div *= 10
-				e++
-			}
-			var rem uint32
-			h, l, rem = divmod(h, l, div)
-			if rem > 0 {
-				return dErr(orig)
-			}
-		}
-		for e > 6111 {
-			// Clamped.
-			var mul uint32 = 1
-			for mul < 1e9 && e > 6111 {
-				mul *= 10
-				e--
-			}
-			h, l, ovr = muladd(h, l, mul, 0)
-			if ovr > 0 || h&((1<<15-1)<<49) > 0 {
-				return dErr(orig)
-			}
-		}
-		if e < -6176 || e > 6111 {
-			return dErr(orig)
-		}
-	}
-
-	if i < len(s) {
-		return dErr(orig)
-	}
-
-	h |= uint64(e+6176) & uint64(1<<14-1) << 49
-	if neg {
-		h |= 1 << 63
-	}
-	return Decimal128{h, l}, nil
-}
-
-func muladd(h, l uint64, mul uint32, add uint32) (resh, resl uint64, overflow uint32) {
-	mul64 := uint64(mul)
-	a := mul64 * (l & (1<<32 - 1))
-	b := a>>32 + mul64*(l>>32)
-	c := b>>32 + mul64*(h&(1<<32-1))
-	d := c>>32 + mul64*(h>>32)
-
-	a = a&(1<<32-1) + uint64(add)
-	b = b&(1<<32-1) + a>>32
-	c = c&(1<<32-1) + b>>32
-	d = d&(1<<32-1) + c>>32
-
-	return (d<<32 | c&(1<<32-1)), (b<<32 | a&(1<<32-1)), uint32(d >> 32)
-}

vendor/gopkg.in.o/mgo.v2/bson/decode.go

@@ -1,849 +0,0 @@
-// BSON library for Go
-//
-// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-// gobson - BSON library for Go.
-
-package bson
-
-import (
-	"fmt"
-	"math"
-	"net/url"
-	"reflect"
-	"strconv"
-	"sync"
-	"time"
-)
-
-type decoder struct {
-	in      []byte
-	i       int
-	docType reflect.Type
-}
-
-var typeM = reflect.TypeOf(M{})
-
-func newDecoder(in []byte) *decoder {
-	return &decoder{in, 0, typeM}
-}
-
-// --------------------------------------------------------------------------
-// Some helper functions.
-
-func corrupted() {
-	panic("Document is corrupted")
-}
-
-func settableValueOf(i interface{}) reflect.Value {
-	v := reflect.ValueOf(i)
-	sv := reflect.New(v.Type()).Elem()
-	sv.Set(v)
-	return sv
-}
-
-// --------------------------------------------------------------------------
-// Unmarshaling of documents.
-
-const (
-	setterUnknown = iota
-	setterNone
-	setterType
-	setterAddr
-)
-
-var setterStyles map[reflect.Type]int
-var setterIface reflect.Type
-var setterMutex sync.RWMutex
-
-func init() {
-	var iface Setter
-	setterIface = reflect.TypeOf(&iface).Elem()
-	setterStyles = make(map[reflect.Type]int)
-}
-
-func setterStyle(outt reflect.Type) int {
-	setterMutex.RLock()
-	style := setterStyles[outt]
-	setterMutex.RUnlock()
-	if style == setterUnknown {
-		setterMutex.Lock()
-		defer setterMutex.Unlock()
-		if outt.Implements(setterIface) {
-			setterStyles[outt] = setterType
-		} else if reflect.PtrTo(outt).Implements(setterIface) {
-			setterStyles[outt] = setterAddr
-		} else {
-			setterStyles[outt] = setterNone
-		}
-		style = setterStyles[outt]
-	}
-	return style
-}
-
-func getSetter(outt reflect.Type, out reflect.Value) Setter {
-	style := setterStyle(outt)
-	if style == setterNone {
-		return nil
-	}
-	if style == setterAddr {
-		if !out.CanAddr() {
-			return nil
-		}
-		out = out.Addr()
-	} else if outt.Kind() == reflect.Ptr && out.IsNil() {
-		out.Set(reflect.New(outt.Elem()))
-	}
-	return out.Interface().(Setter)
-}
-
-func clearMap(m reflect.Value) {
-	var none reflect.Value
-	for _, k := range m.MapKeys() {
-		m.SetMapIndex(k, none)
-	}
-}
-
-func (d *decoder) readDocTo(out reflect.Value) {
-	var elemType reflect.Type
-	outt := out.Type()
-	outk := outt.Kind()
-
-	for {
-		if outk == reflect.Ptr && out.IsNil() {
-			out.Set(reflect.New(outt.Elem()))
-		}
-		if setter := getSetter(outt, out); setter != nil {
-			var raw Raw
-			d.readDocTo(reflect.ValueOf(&raw))
-			err := setter.SetBSON(raw)
-			if _, ok := err.(*TypeError); err != nil && !ok {
-				panic(err)
-			}
-			return
-		}
-		if outk == reflect.Ptr {
-			out = out.Elem()
-			outt = out.Type()
-			outk = out.Kind()
-			continue
-		}
-		break
-	}
-
-	var fieldsMap map[string]fieldInfo
-	var inlineMap reflect.Value
-	start := d.i
-
-	origout := out
-	if outk == reflect.Interface {
-		if d.docType.Kind() == reflect.Map {
-			mv := reflect.MakeMap(d.docType)
-			out.Set(mv)
-			out = mv
-		} else {
-			dv := reflect.New(d.docType).Elem()
-			out.Set(dv)
-			out = dv
-		}
-		outt = out.Type()
-		outk = outt.Kind()
-	}
-
-	docType := d.docType
-	keyType := typeString
-	convertKey := false
-	switch outk {
-	case reflect.Map:
-		keyType = outt.Key()
-		if keyType.Kind() != reflect.String {
-			panic("BSON map must have string keys. Got: " + outt.String())
-		}
-		if keyType != typeString {
-			convertKey = true
-		}
-		elemType = outt.Elem()
-		if elemType == typeIface {
-			d.docType = outt
-		}
-		if out.IsNil() {
-			out.Set(reflect.MakeMap(out.Type()))
-		} else if out.Len() > 0 {
-			clearMap(out)
-		}
-	case reflect.Struct:
-		if outt != typeRaw {
-			sinfo, err := getStructInfo(out.Type())
-			if err != nil {
-				panic(err)
-			}
-			fieldsMap = sinfo.FieldsMap
-			out.Set(sinfo.Zero)
-			if sinfo.InlineMap != -1 {
-				inlineMap = out.Field(sinfo.InlineMap)
-				if !inlineMap.IsNil() && inlineMap.Len() > 0 {
-					clearMap(inlineMap)
-				}
-				elemType = inlineMap.Type().Elem()
-				if elemType == typeIface {
-					d.docType = inlineMap.Type()
-				}
-			}
-		}
-	case reflect.Slice:
-		switch outt.Elem() {
-		case typeDocElem:
-			origout.Set(d.readDocElems(outt))
-			return
-		case typeRawDocElem:
-			origout.Set(d.readRawDocElems(outt))
-			return
-		}
-		fallthrough
-	default:
-		panic("Unsupported document type for unmarshalling: " + out.Type().String())
-	}
-
-	end := int(d.readInt32())
-	end += d.i - 4
-	if end <= d.i || end > len(d.in) || d.in[end-1] != '\x00' {
-		corrupted()
-	}
-	for d.in[d.i] != '\x00' {
-		kind := d.readByte()
-		name := d.readCStr()
-		if d.i >= end {
-			corrupted()
-		}
-
-		switch outk {
-		case reflect.Map:
-			e := reflect.New(elemType).Elem()
-			if d.readElemTo(e, kind) {
-				k := reflect.ValueOf(name)
-				if convertKey {
-					k = k.Convert(keyType)
-				}
-				out.SetMapIndex(k, e)
-			}
-		case reflect.Struct:
-			if outt == typeRaw {
-				d.dropElem(kind)
-			} else {
-				if info, ok := fieldsMap[name]; ok {
-					if info.Inline == nil {
-						d.readElemTo(out.Field(info.Num), kind)
-					} else {
-						d.readElemTo(out.FieldByIndex(info.Inline), kind)
-					}
-				} else if inlineMap.IsValid() {
-					if inlineMap.IsNil() {
-						inlineMap.Set(reflect.MakeMap(inlineMap.Type()))
-					}
-					e := reflect.New(elemType).Elem()
-					if d.readElemTo(e, kind) {
-						inlineMap.SetMapIndex(reflect.ValueOf(name), e)
-					}
-				} else {
-					d.dropElem(kind)
-				}
-			}
-		case reflect.Slice:
-		}
-
-		if d.i >= end {
-			corrupted()
-		}
-	}
-	d.i++ // '\x00'
-	if d.i != end {
-		corrupted()
-	}
-	d.docType = docType
-
-	if outt == typeRaw {
-		out.Set(reflect.ValueOf(Raw{0x03, d.in[start:d.i]}))
-	}
-}
-
-func (d *decoder) readArrayDocTo(out reflect.Value) {
-	end := int(d.readInt32())
-	end += d.i - 4
-	if end <= d.i || end > len(d.in) || d.in[end-1] != '\x00' {
-		corrupted()
-	}
-	i := 0
-	l := out.Len()
-	for d.in[d.i] != '\x00' {
-		if i >= l {
-			panic("Length mismatch on array field")
-		}
-		kind := d.readByte()
-		for d.i < end && d.in[d.i] != '\x00' {
-			d.i++
-		}
-		if d.i >= end {
-			corrupted()
-		}
-		d.i++
-		d.readElemTo(out.Index(i), kind)
-		if d.i >= end {
-			corrupted()
-		}
-		i++
-	}
-	if i != l {
-		panic("Length mismatch on array field")
-	}
-	d.i++ // '\x00'
-	if d.i != end {
-		corrupted()
-	}
-}
-
-func (d *decoder) readSliceDoc(t reflect.Type) interface{} {
-	tmp := make([]reflect.Value, 0, 8)
-	elemType := t.Elem()
-	if elemType == typeRawDocElem {
-		d.dropElem(0x04)
-		return reflect.Zero(t).Interface()
-	}
-
-	end := int(d.readInt32())
-	end += d.i - 4
-	if end <= d.i || end > len(d.in) || d.in[end-1] != '\x00' {
-		corrupted()
-	}
-	for d.in[d.i] != '\x00' {
-		kind := d.readByte()
-		for d.i < end && d.in[d.i] != '\x00' {
-			d.i++
-		}
-		if d.i >= end {
-			corrupted()
-		}
-		d.i++
-		e := reflect.New(elemType).Elem()
-		if d.readElemTo(e, kind) {
-			tmp = append(tmp, e)
-		}
-		if d.i >= end {
-			corrupted()
-		}
-	}
-	d.i++ // '\x00'
-	if d.i != end {
-		corrupted()
-	}
-
-	n := len(tmp)
-	slice := reflect.MakeSlice(t, n, n)
-	for i := 0; i != n; i++ {
-		slice.Index(i).Set(tmp[i])
-	}
-	return slice.Interface()
-}
-
-var typeSlice = reflect.TypeOf([]interface{}{})
-var typeIface = typeSlice.Elem()
-
-func (d *decoder) readDocElems(typ reflect.Type) reflect.Value {
-	docType := d.docType
-	d.docType = typ
-	slice := make([]DocElem, 0, 8)
-	d.readDocWith(func(kind byte, name string) {
-		e := DocElem{Name: name}
-		v := reflect.ValueOf(&e.Value)
-		if d.readElemTo(v.Elem(), kind) {
-			slice = append(slice, e)
-		}
-	})
-	slicev := reflect.New(typ).Elem()
-	slicev.Set(reflect.ValueOf(slice))
-	d.docType = docType
-	return slicev
-}
-
-func (d *decoder) readRawDocElems(typ reflect.Type) reflect.Value {
-	docType := d.docType
-	d.docType = typ
-	slice := make([]RawDocElem, 0, 8)
-	d.readDocWith(func(kind byte, name string) {
-		e := RawDocElem{Name: name}
-		v := reflect.ValueOf(&e.Value)
-		if d.readElemTo(v.Elem(), kind) {
-			slice = append(slice, e)
-		}
-	})
-	slicev := reflect.New(typ).Elem()
-	slicev.Set(reflect.ValueOf(slice))
-	d.docType = docType
-	return slicev
-}
-
-func (d *decoder) readDocWith(f func(kind byte, name string)) {
-	end := int(d.readInt32())
-	end += d.i - 4
-	if end <= d.i || end > len(d.in) || d.in[end-1] != '\x00' {
-		corrupted()
-	}
-	for d.in[d.i] != '\x00' {
-		kind := d.readByte()
-		name := d.readCStr()
-		if d.i >= end {
-			corrupted()
-		}
-		f(kind, name)
-		if d.i >= end {
-			corrupted()
-		}
-	}
-	d.i++ // '\x00'
-	if d.i != end {
-		corrupted()
-	}
-}
-
-// --------------------------------------------------------------------------
-// Unmarshaling of individual elements within a document.
-
-var blackHole = settableValueOf(struct{}{})
-
-func (d *decoder) dropElem(kind byte) {
-	d.readElemTo(blackHole, kind)
-}
-
-// Attempt to decode an element from the document and put it into out.
-// If the types are not compatible, the returned ok value will be
-// false and out will be unchanged.
-func (d *decoder) readElemTo(out reflect.Value, kind byte) (good bool) {
-
-	start := d.i
-
-	if kind == 0x03 {
-		// Delegate unmarshaling of documents.
-		outt := out.Type()
-		outk := out.Kind()
-		switch outk {
-		case reflect.Interface, reflect.Ptr, reflect.Struct, reflect.Map:
-			d.readDocTo(out)
-			return true
-		}
-		if setterStyle(outt) != setterNone {
-			d.readDocTo(out)
-			return true
-		}
-		if outk == reflect.Slice {
-			switch outt.Elem() {
-			case typeDocElem:
-				out.Set(d.readDocElems(outt))
-			case typeRawDocElem:
-				out.Set(d.readRawDocElems(outt))
-			default:
-				d.readDocTo(blackHole)
-			}
-			return true
-		}
-		d.readDocTo(blackHole)
-		return true
-	}
-
-	var in interface{}
-
-	switch kind {
-	case 0x01: // Float64
-		in = d.readFloat64()
-	case 0x02: // UTF-8 string
-		in = d.readStr()
-	case 0x03: // Document
-		panic("Can't happen. Handled above.")
-	case 0x04: // Array
-		outt := out.Type()
-		if setterStyle(outt) != setterNone {
-			// Skip the value so its data is handed to the setter below.
-			d.dropElem(kind)
-			break
-		}
-		for outt.Kind() == reflect.Ptr {
-			outt = outt.Elem()
-		}
-		switch outt.Kind() {
-		case reflect.Array:
-			d.readArrayDocTo(out)
-			return true
-		case reflect.Slice:
-			in = d.readSliceDoc(outt)
-		default:
-			in = d.readSliceDoc(typeSlice)
-		}
-	case 0x05: // Binary
-		b := d.readBinary()
-		if b.Kind == 0x00 || b.Kind == 0x02 {
-			in = b.Data
-		} else {
-			in = b
-		}
-	case 0x06: // Undefined (obsolete, but still seen in the wild)
-		in = Undefined
-	case 0x07: // ObjectId
-		in = ObjectId(d.readBytes(12))
-	case 0x08: // Bool
-		in = d.readBool()
-	case 0x09: // Timestamp
-		// MongoDB handles timestamps as milliseconds.
-		i := d.readInt64()
-		if i == -62135596800000 {
-			in = time.Time{} // In UTC for convenience.
-		} else {
-			in = time.Unix(i/1e3, i%1e3*1e6)
-		}
-	case 0x0A: // Nil
-		in = nil
-	case 0x0B: // RegEx
-		in = d.readRegEx()
-	case 0x0C:
-		in = DBPointer{Namespace: d.readStr(), Id: ObjectId(d.readBytes(12))}
-	case 0x0D: // JavaScript without scope
-		in = JavaScript{Code: d.readStr()}
-	case 0x0E: // Symbol
-		in = Symbol(d.readStr())
-	case 0x0F: // JavaScript with scope
-		d.i += 4 // Skip length
-		js := JavaScript{d.readStr(), make(M)}
-		d.readDocTo(reflect.ValueOf(js.Scope))
-		in = js
-	case 0x10: // Int32
-		in = int(d.readInt32())
-	case 0x11: // Mongo-specific timestamp
-		in = MongoTimestamp(d.readInt64())
-	case 0x12: // Int64
-		in = d.readInt64()
-	case 0x13: // Decimal128
-		in = Decimal128{
-			l: uint64(d.readInt64()),
-			h: uint64(d.readInt64()),
-		}
-	case 0x7F: // Max key
-		in = MaxKey
-	case 0xFF: // Min key
-		in = MinKey
-	default:
-		panic(fmt.Sprintf("Unknown element kind (0x%02X)", kind))
-	}
-
-	outt := out.Type()
-
-	if outt == typeRaw {
-		out.Set(reflect.ValueOf(Raw{kind, d.in[start:d.i]}))
-		return true
-	}
-
-	if setter := getSetter(outt, out); setter != nil {
-		err := setter.SetBSON(Raw{kind, d.in[start:d.i]})
-		if err == SetZero {
-			out.Set(reflect.Zero(outt))
-			return true
-		}
-		if err == nil {
-			return true
-		}
-		if _, ok := err.(*TypeError); !ok {
-			panic(err)
-		}
-		return false
-	}
-
-	if in == nil {
-		out.Set(reflect.Zero(outt))
-		return true
-	}
-
-	outk := outt.Kind()
-
-	// Dereference and initialize pointer if necessary.
-	first := true
-	for outk == reflect.Ptr {
-		if !out.IsNil() {
-			out = out.Elem()
-		} else {
-			elem := reflect.New(outt.Elem())
-			if first {
-				// Only set if value is compatible.
-				first = false
-				defer func(out, elem reflect.Value) {
-					if good {
-						out.Set(elem)
-					}
-				}(out, elem)
-			} else {
-				out.Set(elem)
-			}
-			out = elem
-		}
-		outt = out.Type()
-		outk = outt.Kind()
-	}
-
-	inv := reflect.ValueOf(in)
-	if outt == inv.Type() {
-		out.Set(inv)
-		return true
-	}
-
-	switch outk {
-	case reflect.Interface:
-		out.Set(inv)
-		return true
-	case reflect.String:
-		switch inv.Kind() {
-		case reflect.String:
-			out.SetString(inv.String())
-			return true
-		case reflect.Slice:
-			if b, ok := in.([]byte); ok {
-				out.SetString(string(b))
-				return true
-			}
-		case reflect.Int, reflect.Int64:
-			if outt == typeJSONNumber {
-				out.SetString(strconv.FormatInt(inv.Int(), 10))
-				return true
-			}
-		case reflect.Float64:
-			if outt == typeJSONNumber {
-				out.SetString(strconv.FormatFloat(inv.Float(), 'f', -1, 64))
-				return true
-			}
-		}
-	case reflect.Slice, reflect.Array:
-		// Remember, array (0x04) slices are built with the correct
-		// element type.  If we are here, must be a cross BSON kind
-		// conversion (e.g. 0x05 unmarshalling on string).
-		if outt.Elem().Kind() != reflect.Uint8 {
-			break
-		}
-		switch inv.Kind() {
-		case reflect.String:
-			slice := []byte(inv.String())
-			out.Set(reflect.ValueOf(slice))
-			return true
-		case reflect.Slice:
-			switch outt.Kind() {
-			case reflect.Array:
-				reflect.Copy(out, inv)
-			case reflect.Slice:
-				out.SetBytes(inv.Bytes())
-			}
-			return true
-		}
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		switch inv.Kind() {
-		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-			out.SetInt(inv.Int())
-			return true
-		case reflect.Float32, reflect.Float64:
-			out.SetInt(int64(inv.Float()))
-			return true
-		case reflect.Bool:
-			if inv.Bool() {
-				out.SetInt(1)
-			} else {
-				out.SetInt(0)
-			}
-			return true
-		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-			panic("can't happen: no uint types in BSON (!?)")
-		}
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-		switch inv.Kind() {
-		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-			out.SetUint(uint64(inv.Int()))
-			return true
-		case reflect.Float32, reflect.Float64:
-			out.SetUint(uint64(inv.Float()))
-			return true
-		case reflect.Bool:
-			if inv.Bool() {
-				out.SetUint(1)
-			} else {
-				out.SetUint(0)
-			}
-			return true
-		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-			panic("Can't happen. No uint types in BSON.")
-		}
-	case reflect.Float32, reflect.Float64:
-		switch inv.Kind() {
-		case reflect.Float32, reflect.Float64:
-			out.SetFloat(inv.Float())
-			return true
-		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-			out.SetFloat(float64(inv.Int()))
-			return true
-		case reflect.Bool:
-			if inv.Bool() {
-				out.SetFloat(1)
-			} else {
-				out.SetFloat(0)
-			}
-			return true
-		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-			panic("Can't happen. No uint types in BSON?")
-		}
-	case reflect.Bool:
-		switch inv.Kind() {
-		case reflect.Bool:
-			out.SetBool(inv.Bool())
-			return true
-		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-			out.SetBool(inv.Int() != 0)
-			return true
-		case reflect.Float32, reflect.Float64:
-			out.SetBool(inv.Float() != 0)
-			return true
-		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-			panic("Can't happen. No uint types in BSON?")
-		}
-	case reflect.Struct:
-		if outt == typeURL && inv.Kind() == reflect.String {
-			u, err := url.Parse(inv.String())
-			if err != nil {
-				panic(err)
-			}
-			out.Set(reflect.ValueOf(u).Elem())
-			return true
-		}
-		if outt == typeBinary {
-			if b, ok := in.([]byte); ok {
-				out.Set(reflect.ValueOf(Binary{Data: b}))
-				return true
-			}
-		}
-	}
-
-	return false
-}
-
-// --------------------------------------------------------------------------
-// Parsers of basic types.
-
-func (d *decoder) readRegEx() RegEx {
-	re := RegEx{}
-	re.Pattern = d.readCStr()
-	re.Options = d.readCStr()
-	return re
-}
-
-func (d *decoder) readBinary() Binary {
-	l := d.readInt32()
-	b := Binary{}
-	b.Kind = d.readByte()
-	b.Data = d.readBytes(l)
-	if b.Kind == 0x02 && len(b.Data) >= 4 {
-		// Weird obsolete format with redundant length.
-		b.Data = b.Data[4:]
-	}
-	return b
-}
-
-func (d *decoder) readStr() string {
-	l := d.readInt32()
-	b := d.readBytes(l - 1)
-	if d.readByte() != '\x00' {
-		corrupted()
-	}
-	return string(b)
-}
-
-func (d *decoder) readCStr() string {
-	start := d.i
-	end := start
-	l := len(d.in)
-	for ; end != l; end++ {
-		if d.in[end] == '\x00' {
-			break
-		}
-	}
-	d.i = end + 1
-	if d.i > l {
-		corrupted()
-	}
-	return string(d.in[start:end])
-}
-
-func (d *decoder) readBool() bool {
-	b := d.readByte()
-	if b == 0 {
-		return false
-	}
-	if b == 1 {
-		return true
-	}
-	panic(fmt.Sprintf("encoded boolean must be 1 or 0, found %d", b))
-}
-
-func (d *decoder) readFloat64() float64 {
-	return math.Float64frombits(uint64(d.readInt64()))
-}
-
-func (d *decoder) readInt32() int32 {
-	b := d.readBytes(4)
-	return int32((uint32(b[0]) << 0) |
-		(uint32(b[1]) << 8) |
-		(uint32(b[2]) << 16) |
-		(uint32(b[3]) << 24))
-}
-
-func (d *decoder) readInt64() int64 {
-	b := d.readBytes(8)
-	return int64((uint64(b[0]) << 0) |
-		(uint64(b[1]) << 8) |
-		(uint64(b[2]) << 16) |
-		(uint64(b[3]) << 24) |
-		(uint64(b[4]) << 32) |
-		(uint64(b[5]) << 40) |
-		(uint64(b[6]) << 48) |
-		(uint64(b[7]) << 56))
-}
-
-func (d *decoder) readByte() byte {
-	i := d.i
-	d.i++
-	if d.i > len(d.in) {
-		corrupted()
-	}
-	return d.in[i]
-}
-
-func (d *decoder) readBytes(length int32) []byte {
-	if length < 0 {
-		corrupted()
-	}
-	start := d.i
-	d.i += int(length)
-	if d.i < start || d.i > len(d.in) {
-		corrupted()
-	}
-	return d.in[start : start+int(length)]
-}

vendor/gopkg.in.o/mgo.v2/bson/encode.go

@@ -1,514 +0,0 @@
-// BSON library for Go
-//
-// Copyright (c) 2010-2012 - Gustavo Niemeyer <gustavo@niemeyer.net>
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-// gobson - BSON library for Go.
-
-package bson
-
-import (
-	"encoding/json"
-	"fmt"
-	"math"
-	"net/url"
-	"reflect"
-	"strconv"
-	"time"
-)
-
-// --------------------------------------------------------------------------
-// Some internal infrastructure.
-
-var (
-	typeBinary         = reflect.TypeOf(Binary{})
-	typeObjectId       = reflect.TypeOf(ObjectId(""))
-	typeDBPointer      = reflect.TypeOf(DBPointer{"", ObjectId("")})
-	typeSymbol         = reflect.TypeOf(Symbol(""))
-	typeMongoTimestamp = reflect.TypeOf(MongoTimestamp(0))
-	typeOrderKey       = reflect.TypeOf(MinKey)
-	typeDocElem        = reflect.TypeOf(DocElem{})
-	typeRawDocElem     = reflect.TypeOf(RawDocElem{})
-	typeRaw            = reflect.TypeOf(Raw{})
-	typeURL            = reflect.TypeOf(url.URL{})
-	typeTime           = reflect.TypeOf(time.Time{})
-	typeString         = reflect.TypeOf("")
-	typeJSONNumber     = reflect.TypeOf(json.Number(""))
-)
-
-const itoaCacheSize = 32
-
-var itoaCache []string
-
-func init() {
-	itoaCache = make([]string, itoaCacheSize)
-	for i := 0; i != itoaCacheSize; i++ {
-		itoaCache[i] = strconv.Itoa(i)
-	}
-}
-
-func itoa(i int) string {
-	if i < itoaCacheSize {
-		return itoaCache[i]
-	}
-	return strconv.Itoa(i)
-}
-
-// --------------------------------------------------------------------------
-// Marshaling of the document value itself.
-
-type encoder struct {
-	out []byte
-}
-
-func (e *encoder) addDoc(v reflect.Value) {
-	for {
-		if vi, ok := v.Interface().(Getter); ok {
-			getv, err := vi.GetBSON()
-			if err != nil {
-				panic(err)
-			}
-			v = reflect.ValueOf(getv)
-			continue
-		}
-		if v.Kind() == reflect.Ptr {
-			v = v.Elem()
-			continue
-		}
-		break
-	}
-
-	if v.Type() == typeRaw {
-		raw := v.Interface().(Raw)
-		if raw.Kind != 0x03 && raw.Kind != 0x00 {
-			panic("Attempted to marshal Raw kind " + strconv.Itoa(int(raw.Kind)) + " as a document")
-		}
-		if len(raw.Data) == 0 {
-			panic("Attempted to marshal empty Raw document")
-		}
-		e.addBytes(raw.Data...)
-		return
-	}
-
-	start := e.reserveInt32()
-
-	switch v.Kind() {
-	case reflect.Map:
-		e.addMap(v)
-	case reflect.Struct:
-		e.addStruct(v)
-	case reflect.Array, reflect.Slice:
-		e.addSlice(v)
-	default:
-		panic("Can't marshal " + v.Type().String() + " as a BSON document")
-	}
-
-	e.addBytes(0)
-	e.setInt32(start, int32(len(e.out)-start))
-}
-
-func (e *encoder) addMap(v reflect.Value) {
-	for _, k := range v.MapKeys() {
-		e.addElem(k.String(), v.MapIndex(k), false)
-	}
-}
-
-func (e *encoder) addStruct(v reflect.Value) {
-	sinfo, err := getStructInfo(v.Type())
-	if err != nil {
-		panic(err)
-	}
-	var value reflect.Value
-	if sinfo.InlineMap >= 0 {
-		m := v.Field(sinfo.InlineMap)
-		if m.Len() > 0 {
-			for _, k := range m.MapKeys() {
-				ks := k.String()
-				if _, found := sinfo.FieldsMap[ks]; found {
-					panic(fmt.Sprintf("Can't have key %q in inlined map; conflicts with struct field", ks))
-				}
-				e.addElem(ks, m.MapIndex(k), false)
-			}
-		}
-	}
-	for _, info := range sinfo.FieldsList {
-		if info.Inline == nil {
-			value = v.Field(info.Num)
-		} else {
-			value = v.FieldByIndex(info.Inline)
-		}
-		if info.OmitEmpty && isZero(value) {
-			continue
-		}
-		e.addElem(info.Key, value, info.MinSize)
-	}
-}
-
-func isZero(v reflect.Value) bool {
-	switch v.Kind() {
-	case reflect.String:
-		return len(v.String()) == 0
-	case reflect.Ptr, reflect.Interface:
-		return v.IsNil()
-	case reflect.Slice:
-		return v.Len() == 0
-	case reflect.Map:
-		return v.Len() == 0
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		return v.Int() == 0
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-		return v.Uint() == 0
-	case reflect.Float32, reflect.Float64:
-		return v.Float() == 0
-	case reflect.Bool:
-		return !v.Bool()
-	case reflect.Struct:
-		vt := v.Type()
-		if vt == typeTime {
-			return v.Interface().(time.Time).IsZero()
-		}
-		for i := 0; i < v.NumField(); i++ {
-			if vt.Field(i).PkgPath != "" && !vt.Field(i).Anonymous {
-				continue // Private field
-			}
-			if !isZero(v.Field(i)) {
-				return false
-			}
-		}
-		return true
-	}
-	return false
-}
-
-func (e *encoder) addSlice(v reflect.Value) {
-	vi := v.Interface()
-	if d, ok := vi.(D); ok {
-		for _, elem := range d {
-			e.addElem(elem.Name, reflect.ValueOf(elem.Value), false)
-		}
-		return
-	}
-	if d, ok := vi.(RawD); ok {
-		for _, elem := range d {
-			e.addElem(elem.Name, reflect.ValueOf(elem.Value), false)
-		}
-		return
-	}
-	l := v.Len()
-	et := v.Type().Elem()
-	if et == typeDocElem {
-		for i := 0; i < l; i++ {
-			elem := v.Index(i).Interface().(DocElem)
-			e.addElem(elem.Name, reflect.ValueOf(elem.Value), false)
-		}
-		return
-	}
-	if et == typeRawDocElem {
-		for i := 0; i < l; i++ {
-			elem := v.Index(i).Interface().(RawDocElem)
-			e.addElem(elem.Name, reflect.ValueOf(elem.Value), false)
-		}
-		return
-	}
-	for i := 0; i < l; i++ {
-		e.addElem(itoa(i), v.Index(i), false)
-	}
-}
-
-// --------------------------------------------------------------------------
-// Marshaling of elements in a document.
-
-func (e *encoder) addElemName(kind byte, name string) {
-	e.addBytes(kind)
-	e.addBytes([]byte(name)...)
-	e.addBytes(0)
-}
-
-func (e *encoder) addElem(name string, v reflect.Value, minSize bool) {
-
-	if !v.IsValid() {
-		e.addElemName(0x0A, name)
-		return
-	}
-
-	if getter, ok := v.Interface().(Getter); ok {
-		getv, err := getter.GetBSON()
-		if err != nil {
-			panic(err)
-		}
-		e.addElem(name, reflect.ValueOf(getv), minSize)
-		return
-	}
-
-	switch v.Kind() {
-
-	case reflect.Interface:
-		e.addElem(name, v.Elem(), minSize)
-
-	case reflect.Ptr:
-		e.addElem(name, v.Elem(), minSize)
-
-	case reflect.String:
-		s := v.String()
-		switch v.Type() {
-		case typeObjectId:
-			if len(s) != 12 {
-				panic("ObjectIDs must be exactly 12 bytes long (got " +
-					strconv.Itoa(len(s)) + ")")
-			}
-			e.addElemName(0x07, name)
-			e.addBytes([]byte(s)...)
-		case typeSymbol:
-			e.addElemName(0x0E, name)
-			e.addStr(s)
-		case typeJSONNumber:
-			n := v.Interface().(json.Number)
-			if i, err := n.Int64(); err == nil {
-				e.addElemName(0x12, name)
-				e.addInt64(i)
-			} else if f, err := n.Float64(); err == nil {
-				e.addElemName(0x01, name)
-				e.addFloat64(f)
-			} else {
-				panic("failed to convert json.Number to a number: " + s)
-			}
-		default:
-			e.addElemName(0x02, name)
-			e.addStr(s)
-		}
-
-	case reflect.Float32, reflect.Float64:
-		e.addElemName(0x01, name)
-		e.addFloat64(v.Float())
-
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-		u := v.Uint()
-		if int64(u) < 0 {
-			panic("BSON has no uint64 type, and value is too large to fit correctly in an int64")
-		} else if u <= math.MaxInt32 && (minSize || v.Kind() <= reflect.Uint32) {
-			e.addElemName(0x10, name)
-			e.addInt32(int32(u))
-		} else {
-			e.addElemName(0x12, name)
-			e.addInt64(int64(u))
-		}
-
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		switch v.Type() {
-		case typeMongoTimestamp:
-			e.addElemName(0x11, name)
-			e.addInt64(v.Int())
-
-		case typeOrderKey:
-			if v.Int() == int64(MaxKey) {
-				e.addElemName(0x7F, name)
-			} else {
-				e.addElemName(0xFF, name)
-			}
-
-		default:
-			i := v.Int()
-			if (minSize || v.Type().Kind() != reflect.Int64) && i >= math.MinInt32 && i <= math.MaxInt32 {
-				// It fits into an int32, encode as such.
-				e.addElemName(0x10, name)
-				e.addInt32(int32(i))
-			} else {
-				e.addElemName(0x12, name)
-				e.addInt64(i)
-			}
-		}
-
-	case reflect.Bool:
-		e.addElemName(0x08, name)
-		if v.Bool() {
-			e.addBytes(1)
-		} else {
-			e.addBytes(0)
-		}
-
-	case reflect.Map:
-		e.addElemName(0x03, name)
-		e.addDoc(v)
-
-	case reflect.Slice:
-		vt := v.Type()
-		et := vt.Elem()
-		if et.Kind() == reflect.Uint8 {
-			e.addElemName(0x05, name)
-			e.addBinary(0x00, v.Bytes())
-		} else if et == typeDocElem || et == typeRawDocElem {
-			e.addElemName(0x03, name)
-			e.addDoc(v)
-		} else {
-			e.addElemName(0x04, name)
-			e.addDoc(v)
-		}
-
-	case reflect.Array:
-		et := v.Type().Elem()
-		if et.Kind() == reflect.Uint8 {
-			e.addElemName(0x05, name)
-			if v.CanAddr() {
-				e.addBinary(0x00, v.Slice(0, v.Len()).Interface().([]byte))
-			} else {
-				n := v.Len()
-				e.addInt32(int32(n))
-				e.addBytes(0x00)
-				for i := 0; i < n; i++ {
-					el := v.Index(i)
-					e.addBytes(byte(el.Uint()))
-				}
-			}
-		} else {
-			e.addElemName(0x04, name)
-			e.addDoc(v)
-		}
-
-	case reflect.Struct:
-		switch s := v.Interface().(type) {
-
-		case Raw:
-			kind := s.Kind
-			if kind == 0x00 {
-				kind = 0x03
-			}
-			if len(s.Data) == 0 && kind != 0x06 && kind != 0x0A && kind != 0xFF && kind != 0x7F {
-				panic("Attempted to marshal empty Raw document")
-			}
-			e.addElemName(kind, name)
-			e.addBytes(s.Data...)
-
-		case Binary:
-			e.addElemName(0x05, name)
-			e.addBinary(s.Kind, s.Data)
-
-		case Decimal128:
-			e.addElemName(0x13, name)
-			e.addInt64(int64(s.l))
-			e.addInt64(int64(s.h))
-
-		case DBPointer:
-			e.addElemName(0x0C, name)
-			e.addStr(s.Namespace)
-			if len(s.Id) != 12 {
-				panic("ObjectIDs must be exactly 12 bytes long (got " +
-					strconv.Itoa(len(s.Id)) + ")")
-			}
-			e.addBytes([]byte(s.Id)...)
-
-		case RegEx:
-			e.addElemName(0x0B, name)
-			e.addCStr(s.Pattern)
-			e.addCStr(s.Options)
-
-		case JavaScript:
-			if s.Scope == nil {
-				e.addElemName(0x0D, name)
-				e.addStr(s.Code)
-			} else {
-				e.addElemName(0x0F, name)
-				start := e.reserveInt32()
-				e.addStr(s.Code)
-				e.addDoc(reflect.ValueOf(s.Scope))
-				e.setInt32(start, int32(len(e.out)-start))
-			}
-
-		case time.Time:
-			// MongoDB handles timestamps as milliseconds.
-			e.addElemName(0x09, name)
-			e.addInt64(s.Unix()*1000 + int64(s.Nanosecond()/1e6))
-
-		case url.URL:
-			e.addElemName(0x02, name)
-			e.addStr(s.String())
-
-		case undefined:
-			e.addElemName(0x06, name)
-
-		default:
-			e.addElemName(0x03, name)
-			e.addDoc(v)
-		}
-
-	default:
-		panic("Can't marshal " + v.Type().String() + " in a BSON document")
-	}
-}
-
-// --------------------------------------------------------------------------
-// Marshaling of base types.
-
-func (e *encoder) addBinary(subtype byte, v []byte) {
-	if subtype == 0x02 {
-		// Wonder how that brilliant idea came to life. Obsolete, luckily.
-		e.addInt32(int32(len(v) + 4))
-		e.addBytes(subtype)
-		e.addInt32(int32(len(v)))
-	} else {
-		e.addInt32(int32(len(v)))
-		e.addBytes(subtype)
-	}
-	e.addBytes(v...)
-}
-
-func (e *encoder) addStr(v string) {
-	e.addInt32(int32(len(v) + 1))
-	e.addCStr(v)
-}
-
-func (e *encoder) addCStr(v string) {
-	e.addBytes([]byte(v)...)
-	e.addBytes(0)
-}
-
-func (e *encoder) reserveInt32() (pos int) {
-	pos = len(e.out)
-	e.addBytes(0, 0, 0, 0)
-	return pos
-}
-
-func (e *encoder) setInt32(pos int, v int32) {
-	e.out[pos+0] = byte(v)
-	e.out[pos+1] = byte(v >> 8)
-	e.out[pos+2] = byte(v >> 16)
-	e.out[pos+3] = byte(v >> 24)
-}
-
-func (e *encoder) addInt32(v int32) {
-	u := uint32(v)
-	e.addBytes(byte(u), byte(u>>8), byte(u>>16), byte(u>>24))
-}
-
-func (e *encoder) addInt64(v int64) {
-	u := uint64(v)
-	e.addBytes(byte(u), byte(u>>8), byte(u>>16), byte(u>>24),
-		byte(u>>32), byte(u>>40), byte(u>>48), byte(u>>56))
-}
-
-func (e *encoder) addFloat64(v float64) {
-	e.addInt64(int64(math.Float64bits(v)))
-}
-
-func (e *encoder) addBytes(v ...byte) {
-	e.out = append(e.out, v...)
-}

vendor/gopkg.in.o/mgo.v2/bson/json.go

@@ -1,380 +0,0 @@
-package bson
-
-import (
-	"bytes"
-	"encoding/base64"
-	"fmt"
-	"gopkg.in/mgo.v2/internal/json"
-	"strconv"
-	"time"
-)
-
-// UnmarshalJSON unmarshals a JSON value that may hold non-standard
-// syntax as defined in BSON's extended JSON specification.
-func UnmarshalJSON(data []byte, value interface{}) error {
-	d := json.NewDecoder(bytes.NewBuffer(data))
-	d.Extend(&jsonExt)
-	return d.Decode(value)
-}
-
-// MarshalJSON marshals a JSON value that may hold non-standard
-// syntax as defined in BSON's extended JSON specification.
-func MarshalJSON(value interface{}) ([]byte, error) {
-	var buf bytes.Buffer
-	e := json.NewEncoder(&buf)
-	e.Extend(&jsonExt)
-	err := e.Encode(value)
-	if err != nil {
-		return nil, err
-	}
-	return buf.Bytes(), nil
-}
-
-// jdec is used internally by the JSON decoding functions
-// so they may unmarshal functions without getting into endless
-// recursion due to keyed objects.
-func jdec(data []byte, value interface{}) error {
-	d := json.NewDecoder(bytes.NewBuffer(data))
-	d.Extend(&funcExt)
-	return d.Decode(value)
-}
-
-var jsonExt json.Extension
-var funcExt json.Extension
-
-// TODO
-// - Shell regular expressions ("/regexp/opts")
-
-func init() {
-	jsonExt.DecodeUnquotedKeys(true)
-	jsonExt.DecodeTrailingCommas(true)
-
-	funcExt.DecodeFunc("BinData", "$binaryFunc", "$type", "$binary")
-	jsonExt.DecodeKeyed("$binary", jdecBinary)
-	jsonExt.DecodeKeyed("$binaryFunc", jdecBinary)
-	jsonExt.EncodeType([]byte(nil), jencBinarySlice)
-	jsonExt.EncodeType(Binary{}, jencBinaryType)
-
-	funcExt.DecodeFunc("ISODate", "$dateFunc", "S")
-	funcExt.DecodeFunc("new Date", "$dateFunc", "S")
-	jsonExt.DecodeKeyed("$date", jdecDate)
-	jsonExt.DecodeKeyed("$dateFunc", jdecDate)
-	jsonExt.EncodeType(time.Time{}, jencDate)
-
-	funcExt.DecodeFunc("Timestamp", "$timestamp", "t", "i")
-	jsonExt.DecodeKeyed("$timestamp", jdecTimestamp)
-	jsonExt.EncodeType(MongoTimestamp(0), jencTimestamp)
-
-	funcExt.DecodeConst("undefined", Undefined)
-
-	jsonExt.DecodeKeyed("$regex", jdecRegEx)
-	jsonExt.EncodeType(RegEx{}, jencRegEx)
-
-	funcExt.DecodeFunc("ObjectId", "$oidFunc", "Id")
-	jsonExt.DecodeKeyed("$oid", jdecObjectId)
-	jsonExt.DecodeKeyed("$oidFunc", jdecObjectId)
-	jsonExt.EncodeType(ObjectId(""), jencObjectId)
-
-	funcExt.DecodeFunc("DBRef", "$dbrefFunc", "$ref", "$id")
-	jsonExt.DecodeKeyed("$dbrefFunc", jdecDBRef)
-
-	funcExt.DecodeFunc("NumberLong", "$numberLongFunc", "N")
-	jsonExt.DecodeKeyed("$numberLong", jdecNumberLong)
-	jsonExt.DecodeKeyed("$numberLongFunc", jdecNumberLong)
-	jsonExt.EncodeType(int64(0), jencNumberLong)
-	jsonExt.EncodeType(int(0), jencInt)
-
-	funcExt.DecodeConst("MinKey", MinKey)
-	funcExt.DecodeConst("MaxKey", MaxKey)
-	jsonExt.DecodeKeyed("$minKey", jdecMinKey)
-	jsonExt.DecodeKeyed("$maxKey", jdecMaxKey)
-	jsonExt.EncodeType(orderKey(0), jencMinMaxKey)
-
-	jsonExt.DecodeKeyed("$undefined", jdecUndefined)
-	jsonExt.EncodeType(Undefined, jencUndefined)
-
-	jsonExt.Extend(&funcExt)
-}
-
-func fbytes(format string, args ...interface{}) []byte {
-	var buf bytes.Buffer
-	fmt.Fprintf(&buf, format, args...)
-	return buf.Bytes()
-}
-
-func jdecBinary(data []byte) (interface{}, error) {
-	var v struct {
-		Binary []byte `json:"$binary"`
-		Type   string `json:"$type"`
-		Func   struct {
-			Binary []byte `json:"$binary"`
-			Type   int64  `json:"$type"`
-		} `json:"$binaryFunc"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-
-	var binData []byte
-	var binKind int64
-	if v.Type == "" && v.Binary == nil {
-		binData = v.Func.Binary
-		binKind = v.Func.Type
-	} else if v.Type == "" {
-		return v.Binary, nil
-	} else {
-		binData = v.Binary
-		binKind, err = strconv.ParseInt(v.Type, 0, 64)
-		if err != nil {
-			binKind = -1
-		}
-	}
-
-	if binKind == 0 {
-		return binData, nil
-	}
-	if binKind < 0 || binKind > 255 {
-		return nil, fmt.Errorf("invalid type in binary object: %s", data)
-	}
-
-	return Binary{Kind: byte(binKind), Data: binData}, nil
-}
-
-func jencBinarySlice(v interface{}) ([]byte, error) {
-	in := v.([]byte)
-	out := make([]byte, base64.StdEncoding.EncodedLen(len(in)))
-	base64.StdEncoding.Encode(out, in)
-	return fbytes(`{"$binary":"%s","$type":"0x0"}`, out), nil
-}
-
-func jencBinaryType(v interface{}) ([]byte, error) {
-	in := v.(Binary)
-	out := make([]byte, base64.StdEncoding.EncodedLen(len(in.Data)))
-	base64.StdEncoding.Encode(out, in.Data)
-	return fbytes(`{"$binary":"%s","$type":"0x%x"}`, out, in.Kind), nil
-}
-
-const jdateFormat = "2006-01-02T15:04:05.999Z"
-
-func jdecDate(data []byte) (interface{}, error) {
-	var v struct {
-		S    string `json:"$date"`
-		Func struct {
-			S string
-		} `json:"$dateFunc"`
-	}
-	_ = jdec(data, &v)
-	if v.S == "" {
-		v.S = v.Func.S
-	}
-	if v.S != "" {
-		for _, format := range []string{jdateFormat, "2006-01-02"} {
-			t, err := time.Parse(format, v.S)
-			if err == nil {
-				return t, nil
-			}
-		}
-		return nil, fmt.Errorf("cannot parse date: %q", v.S)
-	}
-
-	var vn struct {
-		Date struct {
-			N int64 `json:"$numberLong,string"`
-		} `json:"$date"`
-		Func struct {
-			S int64
-		} `json:"$dateFunc"`
-	}
-	err := jdec(data, &vn)
-	if err != nil {
-		return nil, fmt.Errorf("cannot parse date: %q", data)
-	}
-	n := vn.Date.N
-	if n == 0 {
-		n = vn.Func.S
-	}
-	return time.Unix(n/1000, n%1000*1e6).UTC(), nil
-}
-
-func jencDate(v interface{}) ([]byte, error) {
-	t := v.(time.Time)
-	return fbytes(`{"$date":%q}`, t.Format(jdateFormat)), nil
-}
-
-func jdecTimestamp(data []byte) (interface{}, error) {
-	var v struct {
-		Func struct {
-			T int32 `json:"t"`
-			I int32 `json:"i"`
-		} `json:"$timestamp"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	return MongoTimestamp(uint64(v.Func.T)<<32 | uint64(uint32(v.Func.I))), nil
-}
-
-func jencTimestamp(v interface{}) ([]byte, error) {
-	ts := uint64(v.(MongoTimestamp))
-	return fbytes(`{"$timestamp":{"t":%d,"i":%d}}`, ts>>32, uint32(ts)), nil
-}
-
-func jdecRegEx(data []byte) (interface{}, error) {
-	var v struct {
-		Regex   string `json:"$regex"`
-		Options string `json:"$options"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	return RegEx{v.Regex, v.Options}, nil
-}
-
-func jencRegEx(v interface{}) ([]byte, error) {
-	re := v.(RegEx)
-	type regex struct {
-		Regex   string `json:"$regex"`
-		Options string `json:"$options"`
-	}
-	return json.Marshal(regex{re.Pattern, re.Options})
-}
-
-func jdecObjectId(data []byte) (interface{}, error) {
-	var v struct {
-		Id   string `json:"$oid"`
-		Func struct {
-			Id string
-		} `json:"$oidFunc"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	if v.Id == "" {
-		v.Id = v.Func.Id
-	}
-	return ObjectIdHex(v.Id), nil
-}
-
-func jencObjectId(v interface{}) ([]byte, error) {
-	return fbytes(`{"$oid":"%s"}`, v.(ObjectId).Hex()), nil
-}
-
-func jdecDBRef(data []byte) (interface{}, error) {
-	// TODO Support unmarshaling $ref and $id into the input value.
-	var v struct {
-		Obj map[string]interface{} `json:"$dbrefFunc"`
-	}
-	// TODO Fix this. Must not be required.
-	v.Obj = make(map[string]interface{})
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	return v.Obj, nil
-}
-
-func jdecNumberLong(data []byte) (interface{}, error) {
-	var v struct {
-		N    int64 `json:"$numberLong,string"`
-		Func struct {
-			N int64 `json:",string"`
-		} `json:"$numberLongFunc"`
-	}
-	var vn struct {
-		N    int64 `json:"$numberLong"`
-		Func struct {
-			N int64
-		} `json:"$numberLongFunc"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		err = jdec(data, &vn)
-		v.N = vn.N
-		v.Func.N = vn.Func.N
-	}
-	if err != nil {
-		return nil, err
-	}
-	if v.N != 0 {
-		return v.N, nil
-	}
-	return v.Func.N, nil
-}
-
-func jencNumberLong(v interface{}) ([]byte, error) {
-	n := v.(int64)
-	f := `{"$numberLong":"%d"}`
-	if n <= 1<<53 {
-		f = `{"$numberLong":%d}`
-	}
-	return fbytes(f, n), nil
-}
-
-func jencInt(v interface{}) ([]byte, error) {
-	n := v.(int)
-	f := `{"$numberLong":"%d"}`
-	if int64(n) <= 1<<53 {
-		f = `%d`
-	}
-	return fbytes(f, n), nil
-}
-
-func jdecMinKey(data []byte) (interface{}, error) {
-	var v struct {
-		N int64 `json:"$minKey"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	if v.N != 1 {
-		return nil, fmt.Errorf("invalid $minKey object: %s", data)
-	}
-	return MinKey, nil
-}
-
-func jdecMaxKey(data []byte) (interface{}, error) {
-	var v struct {
-		N int64 `json:"$maxKey"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	if v.N != 1 {
-		return nil, fmt.Errorf("invalid $maxKey object: %s", data)
-	}
-	return MaxKey, nil
-}
-
-func jencMinMaxKey(v interface{}) ([]byte, error) {
-	switch v.(orderKey) {
-	case MinKey:
-		return []byte(`{"$minKey":1}`), nil
-	case MaxKey:
-		return []byte(`{"$maxKey":1}`), nil
-	}
-	panic(fmt.Sprintf("invalid $minKey/$maxKey value: %d", v))
-}
-
-func jdecUndefined(data []byte) (interface{}, error) {
-	var v struct {
-		B bool `json:"$undefined"`
-	}
-	err := jdec(data, &v)
-	if err != nil {
-		return nil, err
-	}
-	if !v.B {
-		return nil, fmt.Errorf("invalid $undefined object: %s", data)
-	}
-	return Undefined, nil
-}
-
-func jencUndefined(v interface{}) ([]byte, error) {
-	return []byte(`{"$undefined":true}`), nil
-}

vendor/gopkg.in.o/mgo.v2/bson/json_test.go

@@ -1,184 +0,0 @@
-package bson_test
-
-import (
-	"gopkg.in/mgo.v2/bson"
-
-	. "gopkg.in/check.v1"
-	"reflect"
-	"strings"
-	"time"
-)
-
-type jsonTest struct {
-	a interface{} // value encoded into JSON (optional)
-	b string      // JSON expected as output of <a>, and used as input to <c>
-	c interface{} // Value expected from decoding <b>, defaults to <a>
-	e string      // error string, if decoding (b) should fail
-}
-
-var jsonTests = []jsonTest{
-	// $binary
-	{
-		a: []byte("foo"),
-		b: `{"$binary":"Zm9v","$type":"0x0"}`,
-	}, {
-		a: bson.Binary{Kind: 2, Data: []byte("foo")},
-		b: `{"$binary":"Zm9v","$type":"0x2"}`,
-	}, {
-		b: `BinData(2,"Zm9v")`,
-		c: bson.Binary{Kind: 2, Data: []byte("foo")},
-	},
-
-	// $date
-	{
-		a: time.Date(2016, 5, 15, 1, 2, 3, 4000000, time.UTC),
-		b: `{"$date":"2016-05-15T01:02:03.004Z"}`,
-	}, {
-		b: `{"$date": {"$numberLong": "1002"}}`,
-		c: time.Date(1970, 1, 1, 0, 0, 1, 2e6, time.UTC),
-	}, {
-		b: `ISODate("2016-05-15T01:02:03.004Z")`,
-		c: time.Date(2016, 5, 15, 1, 2, 3, 4000000, time.UTC),
-	}, {
-		b: `new Date(1000)`,
-		c: time.Date(1970, 1, 1, 0, 0, 1, 0, time.UTC),
-	}, {
-		b: `new Date("2016-05-15")`,
-		c: time.Date(2016, 5, 15, 0, 0, 0, 0, time.UTC),
-	},
-
-	// $timestamp
-	{
-		a: bson.MongoTimestamp(4294967298),
-		b: `{"$timestamp":{"t":1,"i":2}}`,
-	}, {
-		b: `Timestamp(1, 2)`,
-		c: bson.MongoTimestamp(4294967298),
-	},
-
-	// $regex
-	{
-		a: bson.RegEx{"pattern", "options"},
-		b: `{"$regex":"pattern","$options":"options"}`,
-	},
-
-	// $oid
-	{
-		a: bson.ObjectIdHex("0123456789abcdef01234567"),
-		b: `{"$oid":"0123456789abcdef01234567"}`,
-	}, {
-		b: `ObjectId("0123456789abcdef01234567")`,
-		c: bson.ObjectIdHex("0123456789abcdef01234567"),
-	},
-
-	// $ref (no special type)
-	{
-		b: `DBRef("name", "id")`,
-		c: map[string]interface{}{"$ref": "name", "$id": "id"},
-	},
-
-	// $numberLong
-	{
-		a: 123,
-		b: `123`,
-	}, {
-		a: int64(9007199254740992),
-		b: `{"$numberLong":9007199254740992}`,
-	}, {
-		a: int64(1<<53 + 1),
-		b: `{"$numberLong":"9007199254740993"}`,
-	}, {
-		a: 1<<53 + 1,
-		b: `{"$numberLong":"9007199254740993"}`,
-		c: int64(9007199254740993),
-	}, {
-		b: `NumberLong(9007199254740992)`,
-		c: int64(1 << 53),
-	}, {
-		b: `NumberLong("9007199254740993")`,
-		c: int64(1<<53 + 1),
-	},
-
-	// $minKey, $maxKey
-	{
-		a: bson.MinKey,
-		b: `{"$minKey":1}`,
-	}, {
-		a: bson.MaxKey,
-		b: `{"$maxKey":1}`,
-	}, {
-		b: `MinKey`,
-		c: bson.MinKey,
-	}, {
-		b: `MaxKey`,
-		c: bson.MaxKey,
-	}, {
-		b: `{"$minKey":0}`,
-		e: `invalid $minKey object: {"$minKey":0}`,
-	}, {
-		b: `{"$maxKey":0}`,
-		e: `invalid $maxKey object: {"$maxKey":0}`,
-	},
-
-	{
-		a: bson.Undefined,
-		b: `{"$undefined":true}`,
-	}, {
-		b: `undefined`,
-		c: bson.Undefined,
-	}, {
-		b: `{"v": undefined}`,
-		c: struct{ V interface{} }{bson.Undefined},
-	},
-
-	// Unquoted keys and trailing commas
-	{
-		b: `{$foo: ["bar",],}`,
-		c: map[string]interface{}{"$foo": []interface{}{"bar"}},
-	},
-}
-
-func (s *S) TestJSON(c *C) {
-	for i, item := range jsonTests {
-		c.Logf("------------ (#%d)", i)
-		c.Logf("A: %#v", item.a)
-		c.Logf("B: %#v", item.b)
-
-		if item.c == nil {
-			item.c = item.a
-		} else {
-			c.Logf("C: %#v", item.c)
-		}
-		if item.e != "" {
-			c.Logf("E: %s", item.e)
-		}
-
-		if item.a != nil {
-			data, err := bson.MarshalJSON(item.a)
-			c.Assert(err, IsNil)
-			c.Logf("Dumped: %#v", string(data))
-			c.Assert(strings.TrimSuffix(string(data), "\n"), Equals, item.b)
-		}
-
-		var zero interface{}
-		if item.c == nil {
-			zero = &struct{}{}
-		} else {
-			zero = reflect.New(reflect.TypeOf(item.c)).Interface()
-		}
-		err := bson.UnmarshalJSON([]byte(item.b), zero)
-		if item.e != "" {
-			c.Assert(err, NotNil)
-			c.Assert(err.Error(), Equals, item.e)
-			continue
-		}
-		c.Assert(err, IsNil)
-		zerov := reflect.ValueOf(zero)
-		value := zerov.Interface()
-		if zerov.Kind() == reflect.Ptr {
-			value = zerov.Elem().Interface()
-		}
-		c.Logf("Loaded: %#v", value)
-		c.Assert(value, DeepEquals, item.c)
-	}
-}

vendor/gopkg.in.o/mgo.v2/bson/specdata/update.sh

@@ -1,27 +0,0 @@
-#!/bin/sh
-
-set -e
-
-if [ ! -d specifications ]; then
-	git clone -b bson git@github.com:jyemin/specifications
-fi
-
-TESTFILE="../specdata_test.go"
-
-cat <<END > $TESTFILE
-package bson_test
-
-var specTests = []string{
-END
-
-for file in specifications/source/bson/tests/*.yml; do
-	(
-		echo '`'
-		cat $file
-		echo -n '`,'
-	) >> $TESTFILE
-done
-
-echo '}' >> $TESTFILE
-
-gofmt -w $TESTFILE

vendor/gopkg.in.o/mgo.v2/bson/specdata_test.go

@@ -1,241 +0,0 @@
-package bson_test
-
-var specTests = []string{
-	`
---- 
-description: "Array type"
-documents:
-  - 
-    decoded: 
-      a : []
-    encoded: 0D000000046100050000000000 
-  - 
-    decoded: 
-      a: [10]
-    encoded: 140000000461000C0000001030000A0000000000
-  -
-    # Decode an array that uses an empty string as the key
-    decodeOnly : true
-    decoded: 
-      a: [10]
-    encoded: 130000000461000B00000010000A0000000000
-  -
-    # Decode an array that uses a non-numeric string as the key
-    decodeOnly : true
-    decoded: 
-      a: [10]
-    encoded: 150000000461000D000000106162000A0000000000
-
-
-`, `
---- 
-description: "Boolean type"
-documents: 
-  - 
-    encoded: "090000000862000100"
-    decoded: { "b" : true }
-  - 
-    encoded: "090000000862000000"
-    decoded: { "b" : false }
-    
- 
-  `, `
---- 
-description: "Corrupted BSON"
-documents:
-  -
-    encoded: "09000000016600"
-    error: "truncated double"
-  -
-    encoded: "09000000026600"
-    error: "truncated string"
-  -
-    encoded: "09000000036600"
-    error: "truncated document"
-  -
-    encoded: "09000000046600"
-    error: "truncated array"
-  -
-    encoded: "09000000056600"
-    error: "truncated binary"
-  -
-    encoded: "09000000076600"
-    error: "truncated objectid"
-  -
-    encoded: "09000000086600"
-    error: "truncated boolean"
-  -
-    encoded: "09000000096600"
-    error: "truncated date"
-  -
-    encoded: "090000000b6600"
-    error: "truncated regex"
-  -
-    encoded: "090000000c6600"
-    error: "truncated db pointer"
-  -
-    encoded: "0C0000000d6600"
-    error: "truncated javascript"
-  -
-    encoded: "0C0000000e6600"
-    error: "truncated symbol"
-  -
-    encoded: "0C0000000f6600"
-    error: "truncated javascript with scope"
-  -
-    encoded: "0C000000106600"
-    error: "truncated int32"
-  -
-    encoded: "0C000000116600"
-    error: "truncated timestamp"
-  -
-    encoded: "0C000000126600"
-    error: "truncated int64"
-  - 
-    encoded: "0400000000"
-    error: basic
-  - 
-    encoded: "0500000001"
-    error: basic
-  - 
-    encoded: "05000000"
-    error: basic
-  - 
-    encoded: "0700000002610078563412"
-    error: basic
-  - 
-    encoded: "090000001061000500"
-    error: basic
-  - 
-    encoded: "00000000000000000000"
-    error: basic
-  - 
-    encoded: "1300000002666f6f00040000006261720000"
-    error: "basic"
-  - 
-    encoded: "1800000003666f6f000f0000001062617200ffffff7f0000"
-    error: basic
-  - 
-    encoded: "1500000003666f6f000c0000000862617200010000"
-    error: basic
-  - 
-    encoded: "1c00000003666f6f001200000002626172000500000062617a000000"
-    error: basic
-  - 
-    encoded: "1000000002610004000000616263ff00"
-    error: string is not null-terminated
-  - 
-    encoded: "0c0000000200000000000000"
-    error: bad_string_length
-  - 
-    encoded: "120000000200ffffffff666f6f6261720000"
-    error: bad_string_length
-  - 
-    encoded: "0c0000000e00000000000000"
-    error: bad_string_length
-  - 
-    encoded: "120000000e00ffffffff666f6f6261720000"
-    error: bad_string_length
-  - 
-    encoded: "180000000c00fa5bd841d6585d9900"
-    error: ""
-  - 
-    encoded: "1e0000000c00ffffffff666f6f626172005259b56afa5bd841d6585d9900"
-    error: bad_string_length
-  - 
-    encoded: "0c0000000d00000000000000"
-    error: bad_string_length
-  - 
-    encoded: "0c0000000d00ffffffff0000"
-    error: bad_string_length
-  - 
-    encoded: "1c0000000f001500000000000000000c000000020001000000000000"
-    error: bad_string_length
-  - 
-    encoded: "1c0000000f0015000000ffffffff000c000000020001000000000000"
-    error: bad_string_length
-  - 
-    encoded: "1c0000000f001500000001000000000c000000020000000000000000"
-    error: bad_string_length
-  - 
-    encoded: "1c0000000f001500000001000000000c0000000200ffffffff000000"
-    error: bad_string_length
-  - 
-    encoded: "0E00000008616263646566676869707172737475"
-    error: "Run-on CString"
-  - 
-    encoded: "0100000000"
-    error: "An object size that's too small to even include the object size, but is correctly encoded, along with a correct EOO (and no data)"
-  - 
-    encoded: "1a0000000e74657374000c00000068656c6c6f20776f726c6400000500000000"
-    error: "One object, but with object size listed smaller than it is in the data"
-  - 
-    encoded: "05000000"
-    error: "One object, missing the EOO at the end"
-  - 
-    encoded: "0500000001"
-    error: "One object, sized correctly, with a spot for an EOO, but the EOO is 0x01"
-  - 
-    encoded: "05000000ff"
-    error: "One object, sized correctly, with a spot for an EOO, but the EOO is 0xff"
-  - 
-    encoded: "0500000070"
-    error: "One object, sized correctly, with a spot for an EOO, but the EOO is 0x70"
-  - 
-    encoded: "07000000000000"
-    error: "Invalid BSON type low range"
-  - 
-    encoded: "07000000800000"
-    error: "Invalid BSON type high range"
-  -
-    encoded: "090000000862000200"
-    error: "Invalid boolean value of 2"
-  - 
-    encoded: "09000000086200ff00"
-    error: "Invalid boolean value of -1"
-  `, `
---- 
-description: "Int32 type"
-documents: 
-  - 
-    decoded: 
-      i: -2147483648
-    encoded: 0C0000001069000000008000
-  - 
-    decoded: 
-      i: 2147483647
-    encoded: 0C000000106900FFFFFF7F00
-  - 
-    decoded: 
-      i: -1
-    encoded: 0C000000106900FFFFFFFF00
-  - 
-    decoded: 
-      i: 0
-    encoded: 0C0000001069000000000000
-  - 
-    decoded: 
-      i: 1
-    encoded: 0C0000001069000100000000
-
-`, `
---- 
-description: "String type"
-documents:
-  - 
-    decoded: 
-      s : ""
-    encoded: 0D000000027300010000000000
-  - 
-    decoded: 
-      s: "a"
-    encoded: 0E00000002730002000000610000
-  - 
-    decoded: 
-      s: "This is a string"
-    encoded: 1D0000000273001100000054686973206973206120737472696E670000
-  - 
-    decoded: 
-      s: "κόσμε"
-    encoded: 180000000273000C000000CEBAE1BDB9CF83CEBCCEB50000
-`}

vendor/gopkg.in.o/mgo.v2/internal/json/bench_test.go

@@ -1,223 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Large data benchmark.
-// The JSON data is a summary of agl's changes in the
-// go, webkit, and chromium open source projects.
-// We benchmark converting between the JSON form
-// and in-memory data structures.
-
-package json
-
-import (
-	"bytes"
-	"compress/gzip"
-	"io/ioutil"
-	"os"
-	"strings"
-	"testing"
-)
-
-type codeResponse struct {
-	Tree     *codeNode `json:"tree"`
-	Username string    `json:"username"`
-}
-
-type codeNode struct {
-	Name     string      `json:"name"`
-	Kids     []*codeNode `json:"kids"`
-	CLWeight float64     `json:"cl_weight"`
-	Touches  int         `json:"touches"`
-	MinT     int64       `json:"min_t"`
-	MaxT     int64       `json:"max_t"`
-	MeanT    int64       `json:"mean_t"`
-}
-
-var codeJSON []byte
-var codeStruct codeResponse
-
-func codeInit() {
-	f, err := os.Open("testdata/code.json.gz")
-	if err != nil {
-		panic(err)
-	}
-	defer f.Close()
-	gz, err := gzip.NewReader(f)
-	if err != nil {
-		panic(err)
-	}
-	data, err := ioutil.ReadAll(gz)
-	if err != nil {
-		panic(err)
-	}
-
-	codeJSON = data
-
-	if err := Unmarshal(codeJSON, &codeStruct); err != nil {
-		panic("unmarshal code.json: " + err.Error())
-	}
-
-	if data, err = Marshal(&codeStruct); err != nil {
-		panic("marshal code.json: " + err.Error())
-	}
-
-	if !bytes.Equal(data, codeJSON) {
-		println("different lengths", len(data), len(codeJSON))
-		for i := 0; i < len(data) && i < len(codeJSON); i++ {
-			if data[i] != codeJSON[i] {
-				println("re-marshal: changed at byte", i)
-				println("orig: ", string(codeJSON[i-10:i+10]))
-				println("new: ", string(data[i-10:i+10]))
-				break
-			}
-		}
-		panic("re-marshal code.json: different result")
-	}
-}
-
-func BenchmarkCodeEncoder(b *testing.B) {
-	if codeJSON == nil {
-		b.StopTimer()
-		codeInit()
-		b.StartTimer()
-	}
-	enc := NewEncoder(ioutil.Discard)
-	for i := 0; i < b.N; i++ {
-		if err := enc.Encode(&codeStruct); err != nil {
-			b.Fatal("Encode:", err)
-		}
-	}
-	b.SetBytes(int64(len(codeJSON)))
-}
-
-func BenchmarkCodeMarshal(b *testing.B) {
-	if codeJSON == nil {
-		b.StopTimer()
-		codeInit()
-		b.StartTimer()
-	}
-	for i := 0; i < b.N; i++ {
-		if _, err := Marshal(&codeStruct); err != nil {
-			b.Fatal("Marshal:", err)
-		}
-	}
-	b.SetBytes(int64(len(codeJSON)))
-}
-
-func BenchmarkCodeDecoder(b *testing.B) {
-	if codeJSON == nil {
-		b.StopTimer()
-		codeInit()
-		b.StartTimer()
-	}
-	var buf bytes.Buffer
-	dec := NewDecoder(&buf)
-	var r codeResponse
-	for i := 0; i < b.N; i++ {
-		buf.Write(codeJSON)
-		// hide EOF
-		buf.WriteByte('\n')
-		buf.WriteByte('\n')
-		buf.WriteByte('\n')
-		if err := dec.Decode(&r); err != nil {
-			b.Fatal("Decode:", err)
-		}
-	}
-	b.SetBytes(int64(len(codeJSON)))
-}
-
-func BenchmarkDecoderStream(b *testing.B) {
-	b.StopTimer()
-	var buf bytes.Buffer
-	dec := NewDecoder(&buf)
-	buf.WriteString(`"` + strings.Repeat("x", 1000000) + `"` + "\n\n\n")
-	var x interface{}
-	if err := dec.Decode(&x); err != nil {
-		b.Fatal("Decode:", err)
-	}
-	ones := strings.Repeat(" 1\n", 300000) + "\n\n\n"
-	b.StartTimer()
-	for i := 0; i < b.N; i++ {
-		if i%300000 == 0 {
-			buf.WriteString(ones)
-		}
-		x = nil
-		if err := dec.Decode(&x); err != nil || x != 1.0 {
-			b.Fatalf("Decode: %v after %d", err, i)
-		}
-	}
-}
-
-func BenchmarkCodeUnmarshal(b *testing.B) {
-	if codeJSON == nil {
-		b.StopTimer()
-		codeInit()
-		b.StartTimer()
-	}
-	for i := 0; i < b.N; i++ {
-		var r codeResponse
-		if err := Unmarshal(codeJSON, &r); err != nil {
-			b.Fatal("Unmarshal:", err)
-		}
-	}
-	b.SetBytes(int64(len(codeJSON)))
-}
-
-func BenchmarkCodeUnmarshalReuse(b *testing.B) {
-	if codeJSON == nil {
-		b.StopTimer()
-		codeInit()
-		b.StartTimer()
-	}
-	var r codeResponse
-	for i := 0; i < b.N; i++ {
-		if err := Unmarshal(codeJSON, &r); err != nil {
-			b.Fatal("Unmarshal:", err)
-		}
-	}
-}
-
-func BenchmarkUnmarshalString(b *testing.B) {
-	data := []byte(`"hello, world"`)
-	var s string
-
-	for i := 0; i < b.N; i++ {
-		if err := Unmarshal(data, &s); err != nil {
-			b.Fatal("Unmarshal:", err)
-		}
-	}
-}
-
-func BenchmarkUnmarshalFloat64(b *testing.B) {
-	var f float64
-	data := []byte(`3.14`)
-
-	for i := 0; i < b.N; i++ {
-		if err := Unmarshal(data, &f); err != nil {
-			b.Fatal("Unmarshal:", err)
-		}
-	}
-}
-
-func BenchmarkUnmarshalInt64(b *testing.B) {
-	var x int64
-	data := []byte(`3`)
-
-	for i := 0; i < b.N; i++ {
-		if err := Unmarshal(data, &x); err != nil {
-			b.Fatal("Unmarshal:", err)
-		}
-	}
-}
-
-func BenchmarkIssue10335(b *testing.B) {
-	b.ReportAllocs()
-	var s struct{}
-	j := []byte(`{"a":{ }}`)
-	for n := 0; n < b.N; n++ {
-		if err := Unmarshal(j, &s); err != nil {
-			b.Fatal(err)
-		}
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/json/encode_test.go

@@ -1,613 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"bytes"
-	"fmt"
-	"math"
-	"reflect"
-	"testing"
-	"unicode"
-)
-
-type Optionals struct {
-	Sr string `json:"sr"`
-	So string `json:"so,omitempty"`
-	Sw string `json:"-"`
-
-	Ir int `json:"omitempty"` // actually named omitempty, not an option
-	Io int `json:"io,omitempty"`
-
-	Slr []string `json:"slr,random"`
-	Slo []string `json:"slo,omitempty"`
-
-	Mr map[string]interface{} `json:"mr"`
-	Mo map[string]interface{} `json:",omitempty"`
-
-	Fr float64 `json:"fr"`
-	Fo float64 `json:"fo,omitempty"`
-
-	Br bool `json:"br"`
-	Bo bool `json:"bo,omitempty"`
-
-	Ur uint `json:"ur"`
-	Uo uint `json:"uo,omitempty"`
-
-	Str struct{} `json:"str"`
-	Sto struct{} `json:"sto,omitempty"`
-}
-
-var optionalsExpected = `{
- "sr": "",
- "omitempty": 0,
- "slr": null,
- "mr": {},
- "fr": 0,
- "br": false,
- "ur": 0,
- "str": {},
- "sto": {}
-}`
-
-func TestOmitEmpty(t *testing.T) {
-	var o Optionals
-	o.Sw = "something"
-	o.Mr = map[string]interface{}{}
-	o.Mo = map[string]interface{}{}
-
-	got, err := MarshalIndent(&o, "", " ")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if got := string(got); got != optionalsExpected {
-		t.Errorf(" got: %s\nwant: %s\n", got, optionalsExpected)
-	}
-}
-
-type StringTag struct {
-	BoolStr bool   `json:",string"`
-	IntStr  int64  `json:",string"`
-	StrStr  string `json:",string"`
-}
-
-var stringTagExpected = `{
- "BoolStr": "true",
- "IntStr": "42",
- "StrStr": "\"xzbit\""
-}`
-
-func TestStringTag(t *testing.T) {
-	var s StringTag
-	s.BoolStr = true
-	s.IntStr = 42
-	s.StrStr = "xzbit"
-	got, err := MarshalIndent(&s, "", " ")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if got := string(got); got != stringTagExpected {
-		t.Fatalf(" got: %s\nwant: %s\n", got, stringTagExpected)
-	}
-
-	// Verify that it round-trips.
-	var s2 StringTag
-	err = NewDecoder(bytes.NewReader(got)).Decode(&s2)
-	if err != nil {
-		t.Fatalf("Decode: %v", err)
-	}
-	if !reflect.DeepEqual(s, s2) {
-		t.Fatalf("decode didn't match.\nsource: %#v\nEncoded as:\n%s\ndecode: %#v", s, string(got), s2)
-	}
-}
-
-// byte slices are special even if they're renamed types.
-type renamedByte byte
-type renamedByteSlice []byte
-type renamedRenamedByteSlice []renamedByte
-
-func TestEncodeRenamedByteSlice(t *testing.T) {
-	s := renamedByteSlice("abc")
-	result, err := Marshal(s)
-	if err != nil {
-		t.Fatal(err)
-	}
-	expect := `"YWJj"`
-	if string(result) != expect {
-		t.Errorf(" got %s want %s", result, expect)
-	}
-	r := renamedRenamedByteSlice("abc")
-	result, err = Marshal(r)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if string(result) != expect {
-		t.Errorf(" got %s want %s", result, expect)
-	}
-}
-
-var unsupportedValues = []interface{}{
-	math.NaN(),
-	math.Inf(-1),
-	math.Inf(1),
-}
-
-func TestUnsupportedValues(t *testing.T) {
-	for _, v := range unsupportedValues {
-		if _, err := Marshal(v); err != nil {
-			if _, ok := err.(*UnsupportedValueError); !ok {
-				t.Errorf("for %v, got %T want UnsupportedValueError", v, err)
-			}
-		} else {
-			t.Errorf("for %v, expected error", v)
-		}
-	}
-}
-
-// Ref has Marshaler and Unmarshaler methods with pointer receiver.
-type Ref int
-
-func (*Ref) MarshalJSON() ([]byte, error) {
-	return []byte(`"ref"`), nil
-}
-
-func (r *Ref) UnmarshalJSON([]byte) error {
-	*r = 12
-	return nil
-}
-
-// Val has Marshaler methods with value receiver.
-type Val int
-
-func (Val) MarshalJSON() ([]byte, error) {
-	return []byte(`"val"`), nil
-}
-
-// RefText has Marshaler and Unmarshaler methods with pointer receiver.
-type RefText int
-
-func (*RefText) MarshalText() ([]byte, error) {
-	return []byte(`"ref"`), nil
-}
-
-func (r *RefText) UnmarshalText([]byte) error {
-	*r = 13
-	return nil
-}
-
-// ValText has Marshaler methods with value receiver.
-type ValText int
-
-func (ValText) MarshalText() ([]byte, error) {
-	return []byte(`"val"`), nil
-}
-
-func TestRefValMarshal(t *testing.T) {
-	var s = struct {
-		R0 Ref
-		R1 *Ref
-		R2 RefText
-		R3 *RefText
-		V0 Val
-		V1 *Val
-		V2 ValText
-		V3 *ValText
-	}{
-		R0: 12,
-		R1: new(Ref),
-		R2: 14,
-		R3: new(RefText),
-		V0: 13,
-		V1: new(Val),
-		V2: 15,
-		V3: new(ValText),
-	}
-	const want = `{"R0":"ref","R1":"ref","R2":"\"ref\"","R3":"\"ref\"","V0":"val","V1":"val","V2":"\"val\"","V3":"\"val\""}`
-	b, err := Marshal(&s)
-	if err != nil {
-		t.Fatalf("Marshal: %v", err)
-	}
-	if got := string(b); got != want {
-		t.Errorf("got %q, want %q", got, want)
-	}
-}
-
-// C implements Marshaler and returns unescaped JSON.
-type C int
-
-func (C) MarshalJSON() ([]byte, error) {
-	return []byte(`"<&>"`), nil
-}
-
-// CText implements Marshaler and returns unescaped text.
-type CText int
-
-func (CText) MarshalText() ([]byte, error) {
-	return []byte(`"<&>"`), nil
-}
-
-func TestMarshalerEscaping(t *testing.T) {
-	var c C
-	want := `"\u003c\u0026\u003e"`
-	b, err := Marshal(c)
-	if err != nil {
-		t.Fatalf("Marshal(c): %v", err)
-	}
-	if got := string(b); got != want {
-		t.Errorf("Marshal(c) = %#q, want %#q", got, want)
-	}
-
-	var ct CText
-	want = `"\"\u003c\u0026\u003e\""`
-	b, err = Marshal(ct)
-	if err != nil {
-		t.Fatalf("Marshal(ct): %v", err)
-	}
-	if got := string(b); got != want {
-		t.Errorf("Marshal(ct) = %#q, want %#q", got, want)
-	}
-}
-
-type IntType int
-
-type MyStruct struct {
-	IntType
-}
-
-func TestAnonymousNonstruct(t *testing.T) {
-	var i IntType = 11
-	a := MyStruct{i}
-	const want = `{"IntType":11}`
-
-	b, err := Marshal(a)
-	if err != nil {
-		t.Fatalf("Marshal: %v", err)
-	}
-	if got := string(b); got != want {
-		t.Errorf("got %q, want %q", got, want)
-	}
-}
-
-type BugA struct {
-	S string
-}
-
-type BugB struct {
-	BugA
-	S string
-}
-
-type BugC struct {
-	S string
-}
-
-// Legal Go: We never use the repeated embedded field (S).
-type BugX struct {
-	A int
-	BugA
-	BugB
-}
-
-// Issue 5245.
-func TestEmbeddedBug(t *testing.T) {
-	v := BugB{
-		BugA{"A"},
-		"B",
-	}
-	b, err := Marshal(v)
-	if err != nil {
-		t.Fatal("Marshal:", err)
-	}
-	want := `{"S":"B"}`
-	got := string(b)
-	if got != want {
-		t.Fatalf("Marshal: got %s want %s", got, want)
-	}
-	// Now check that the duplicate field, S, does not appear.
-	x := BugX{
-		A: 23,
-	}
-	b, err = Marshal(x)
-	if err != nil {
-		t.Fatal("Marshal:", err)
-	}
-	want = `{"A":23}`
-	got = string(b)
-	if got != want {
-		t.Fatalf("Marshal: got %s want %s", got, want)
-	}
-}
-
-type BugD struct { // Same as BugA after tagging.
-	XXX string `json:"S"`
-}
-
-// BugD's tagged S field should dominate BugA's.
-type BugY struct {
-	BugA
-	BugD
-}
-
-// Test that a field with a tag dominates untagged fields.
-func TestTaggedFieldDominates(t *testing.T) {
-	v := BugY{
-		BugA{"BugA"},
-		BugD{"BugD"},
-	}
-	b, err := Marshal(v)
-	if err != nil {
-		t.Fatal("Marshal:", err)
-	}
-	want := `{"S":"BugD"}`
-	got := string(b)
-	if got != want {
-		t.Fatalf("Marshal: got %s want %s", got, want)
-	}
-}
-
-// There are no tags here, so S should not appear.
-type BugZ struct {
-	BugA
-	BugC
-	BugY // Contains a tagged S field through BugD; should not dominate.
-}
-
-func TestDuplicatedFieldDisappears(t *testing.T) {
-	v := BugZ{
-		BugA{"BugA"},
-		BugC{"BugC"},
-		BugY{
-			BugA{"nested BugA"},
-			BugD{"nested BugD"},
-		},
-	}
-	b, err := Marshal(v)
-	if err != nil {
-		t.Fatal("Marshal:", err)
-	}
-	want := `{}`
-	got := string(b)
-	if got != want {
-		t.Fatalf("Marshal: got %s want %s", got, want)
-	}
-}
-
-func TestStringBytes(t *testing.T) {
-	// Test that encodeState.stringBytes and encodeState.string use the same encoding.
-	var r []rune
-	for i := '\u0000'; i <= unicode.MaxRune; i++ {
-		r = append(r, i)
-	}
-	s := string(r) + "\xff\xff\xffhello" // some invalid UTF-8 too
-
-	for _, escapeHTML := range []bool{true, false} {
-		es := &encodeState{}
-		es.string(s, escapeHTML)
-
-		esBytes := &encodeState{}
-		esBytes.stringBytes([]byte(s), escapeHTML)
-
-		enc := es.Buffer.String()
-		encBytes := esBytes.Buffer.String()
-		if enc != encBytes {
-			i := 0
-			for i < len(enc) && i < len(encBytes) && enc[i] == encBytes[i] {
-				i++
-			}
-			enc = enc[i:]
-			encBytes = encBytes[i:]
-			i = 0
-			for i < len(enc) && i < len(encBytes) && enc[len(enc)-i-1] == encBytes[len(encBytes)-i-1] {
-				i++
-			}
-			enc = enc[:len(enc)-i]
-			encBytes = encBytes[:len(encBytes)-i]
-
-			if len(enc) > 20 {
-				enc = enc[:20] + "..."
-			}
-			if len(encBytes) > 20 {
-				encBytes = encBytes[:20] + "..."
-			}
-
-			t.Errorf("with escapeHTML=%t, encodings differ at %#q vs %#q",
-				escapeHTML, enc, encBytes)
-		}
-	}
-}
-
-func TestIssue6458(t *testing.T) {
-	type Foo struct {
-		M RawMessage
-	}
-	x := Foo{RawMessage(`"foo"`)}
-
-	b, err := Marshal(&x)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if want := `{"M":"foo"}`; string(b) != want {
-		t.Errorf("Marshal(&x) = %#q; want %#q", b, want)
-	}
-
-	b, err = Marshal(x)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	if want := `{"M":"ImZvbyI="}`; string(b) != want {
-		t.Errorf("Marshal(x) = %#q; want %#q", b, want)
-	}
-}
-
-func TestIssue10281(t *testing.T) {
-	type Foo struct {
-		N Number
-	}
-	x := Foo{Number(`invalid`)}
-
-	b, err := Marshal(&x)
-	if err == nil {
-		t.Errorf("Marshal(&x) = %#q; want error", b)
-	}
-}
-
-func TestHTMLEscape(t *testing.T) {
-	var b, want bytes.Buffer
-	m := `{"M":"<html>foo &` + "\xe2\x80\xa8 \xe2\x80\xa9" + `</html>"}`
-	want.Write([]byte(`{"M":"\u003chtml\u003efoo \u0026\u2028 \u2029\u003c/html\u003e"}`))
-	HTMLEscape(&b, []byte(m))
-	if !bytes.Equal(b.Bytes(), want.Bytes()) {
-		t.Errorf("HTMLEscape(&b, []byte(m)) = %s; want %s", b.Bytes(), want.Bytes())
-	}
-}
-
-// golang.org/issue/8582
-func TestEncodePointerString(t *testing.T) {
-	type stringPointer struct {
-		N *int64 `json:"n,string"`
-	}
-	var n int64 = 42
-	b, err := Marshal(stringPointer{N: &n})
-	if err != nil {
-		t.Fatalf("Marshal: %v", err)
-	}
-	if got, want := string(b), `{"n":"42"}`; got != want {
-		t.Errorf("Marshal = %s, want %s", got, want)
-	}
-	var back stringPointer
-	err = Unmarshal(b, &back)
-	if err != nil {
-		t.Fatalf("Unmarshal: %v", err)
-	}
-	if back.N == nil {
-		t.Fatalf("Unmarshalled nil N field")
-	}
-	if *back.N != 42 {
-		t.Fatalf("*N = %d; want 42", *back.N)
-	}
-}
-
-var encodeStringTests = []struct {
-	in  string
-	out string
-}{
-	{"\x00", `"\u0000"`},
-	{"\x01", `"\u0001"`},
-	{"\x02", `"\u0002"`},
-	{"\x03", `"\u0003"`},
-	{"\x04", `"\u0004"`},
-	{"\x05", `"\u0005"`},
-	{"\x06", `"\u0006"`},
-	{"\x07", `"\u0007"`},
-	{"\x08", `"\u0008"`},
-	{"\x09", `"\t"`},
-	{"\x0a", `"\n"`},
-	{"\x0b", `"\u000b"`},
-	{"\x0c", `"\u000c"`},
-	{"\x0d", `"\r"`},
-	{"\x0e", `"\u000e"`},
-	{"\x0f", `"\u000f"`},
-	{"\x10", `"\u0010"`},
-	{"\x11", `"\u0011"`},
-	{"\x12", `"\u0012"`},
-	{"\x13", `"\u0013"`},
-	{"\x14", `"\u0014"`},
-	{"\x15", `"\u0015"`},
-	{"\x16", `"\u0016"`},
-	{"\x17", `"\u0017"`},
-	{"\x18", `"\u0018"`},
-	{"\x19", `"\u0019"`},
-	{"\x1a", `"\u001a"`},
-	{"\x1b", `"\u001b"`},
-	{"\x1c", `"\u001c"`},
-	{"\x1d", `"\u001d"`},
-	{"\x1e", `"\u001e"`},
-	{"\x1f", `"\u001f"`},
-}
-
-func TestEncodeString(t *testing.T) {
-	for _, tt := range encodeStringTests {
-		b, err := Marshal(tt.in)
-		if err != nil {
-			t.Errorf("Marshal(%q): %v", tt.in, err)
-			continue
-		}
-		out := string(b)
-		if out != tt.out {
-			t.Errorf("Marshal(%q) = %#q, want %#q", tt.in, out, tt.out)
-		}
-	}
-}
-
-type jsonbyte byte
-
-func (b jsonbyte) MarshalJSON() ([]byte, error) { return tenc(`{"JB":%d}`, b) }
-
-type textbyte byte
-
-func (b textbyte) MarshalText() ([]byte, error) { return tenc(`TB:%d`, b) }
-
-type jsonint int
-
-func (i jsonint) MarshalJSON() ([]byte, error) { return tenc(`{"JI":%d}`, i) }
-
-type textint int
-
-func (i textint) MarshalText() ([]byte, error) { return tenc(`TI:%d`, i) }
-
-func tenc(format string, a ...interface{}) ([]byte, error) {
-	var buf bytes.Buffer
-	fmt.Fprintf(&buf, format, a...)
-	return buf.Bytes(), nil
-}
-
-// Issue 13783
-func TestEncodeBytekind(t *testing.T) {
-	testdata := []struct {
-		data interface{}
-		want string
-	}{
-		{byte(7), "7"},
-		{jsonbyte(7), `{"JB":7}`},
-		{textbyte(4), `"TB:4"`},
-		{jsonint(5), `{"JI":5}`},
-		{textint(1), `"TI:1"`},
-		{[]byte{0, 1}, `"AAE="`},
-		{[]jsonbyte{0, 1}, `[{"JB":0},{"JB":1}]`},
-		{[][]jsonbyte{{0, 1}, {3}}, `[[{"JB":0},{"JB":1}],[{"JB":3}]]`},
-		{[]textbyte{2, 3}, `["TB:2","TB:3"]`},
-		{[]jsonint{5, 4}, `[{"JI":5},{"JI":4}]`},
-		{[]textint{9, 3}, `["TI:9","TI:3"]`},
-		{[]int{9, 3}, `[9,3]`},
-	}
-	for _, d := range testdata {
-		js, err := Marshal(d.data)
-		if err != nil {
-			t.Error(err)
-			continue
-		}
-		got, want := string(js), d.want
-		if got != want {
-			t.Errorf("got %s, want %s", got, want)
-		}
-	}
-}
-
-func TestTextMarshalerMapKeysAreSorted(t *testing.T) {
-	b, err := Marshal(map[unmarshalerText]int{
-		{"x", "y"}: 1,
-		{"y", "x"}: 2,
-		{"a", "z"}: 3,
-		{"z", "a"}: 4,
-	})
-	if err != nil {
-		t.Fatalf("Failed to Marshal text.Marshaler: %v", err)
-	}
-	const want = `{"a:z":3,"x:y":1,"y:x":2,"z:a":4}`
-	if string(b) != want {
-		t.Errorf("Marshal map with text.Marshaler keys: got %#q, want %#q", b, want)
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/json/example_test.go

@@ -1,252 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json_test
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-	"log"
-	"os"
-	"strings"
-)
-
-func ExampleMarshal() {
-	type ColorGroup struct {
-		ID     int
-		Name   string
-		Colors []string
-	}
-	group := ColorGroup{
-		ID:     1,
-		Name:   "Reds",
-		Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
-	}
-	b, err := json.Marshal(group)
-	if err != nil {
-		fmt.Println("error:", err)
-	}
-	os.Stdout.Write(b)
-	// Output:
-	// {"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}
-}
-
-func ExampleUnmarshal() {
-	var jsonBlob = []byte(`[
-		{"Name": "Platypus", "Order": "Monotremata"},
-		{"Name": "Quoll",    "Order": "Dasyuromorphia"}
-	]`)
-	type Animal struct {
-		Name  string
-		Order string
-	}
-	var animals []Animal
-	err := json.Unmarshal(jsonBlob, &animals)
-	if err != nil {
-		fmt.Println("error:", err)
-	}
-	fmt.Printf("%+v", animals)
-	// Output:
-	// [{Name:Platypus Order:Monotremata} {Name:Quoll Order:Dasyuromorphia}]
-}
-
-// This example uses a Decoder to decode a stream of distinct JSON values.
-func ExampleDecoder() {
-	const jsonStream = `
-		{"Name": "Ed", "Text": "Knock knock."}
-		{"Name": "Sam", "Text": "Who's there?"}
-		{"Name": "Ed", "Text": "Go fmt."}
-		{"Name": "Sam", "Text": "Go fmt who?"}
-		{"Name": "Ed", "Text": "Go fmt yourself!"}
-	`
-	type Message struct {
-		Name, Text string
-	}
-	dec := json.NewDecoder(strings.NewReader(jsonStream))
-	for {
-		var m Message
-		if err := dec.Decode(&m); err == io.EOF {
-			break
-		} else if err != nil {
-			log.Fatal(err)
-		}
-		fmt.Printf("%s: %s\n", m.Name, m.Text)
-	}
-	// Output:
-	// Ed: Knock knock.
-	// Sam: Who's there?
-	// Ed: Go fmt.
-	// Sam: Go fmt who?
-	// Ed: Go fmt yourself!
-}
-
-// This example uses a Decoder to decode a stream of distinct JSON values.
-func ExampleDecoder_Token() {
-	const jsonStream = `
-		{"Message": "Hello", "Array": [1, 2, 3], "Null": null, "Number": 1.234}
-	`
-	dec := json.NewDecoder(strings.NewReader(jsonStream))
-	for {
-		t, err := dec.Token()
-		if err == io.EOF {
-			break
-		}
-		if err != nil {
-			log.Fatal(err)
-		}
-		fmt.Printf("%T: %v", t, t)
-		if dec.More() {
-			fmt.Printf(" (more)")
-		}
-		fmt.Printf("\n")
-	}
-	// Output:
-	// json.Delim: { (more)
-	// string: Message (more)
-	// string: Hello (more)
-	// string: Array (more)
-	// json.Delim: [ (more)
-	// float64: 1 (more)
-	// float64: 2 (more)
-	// float64: 3
-	// json.Delim: ] (more)
-	// string: Null (more)
-	// <nil>: <nil> (more)
-	// string: Number (more)
-	// float64: 1.234
-	// json.Delim: }
-}
-
-// This example uses a Decoder to decode a streaming array of JSON objects.
-func ExampleDecoder_Decode_stream() {
-	const jsonStream = `
-		[
-			{"Name": "Ed", "Text": "Knock knock."},
-			{"Name": "Sam", "Text": "Who's there?"},
-			{"Name": "Ed", "Text": "Go fmt."},
-			{"Name": "Sam", "Text": "Go fmt who?"},
-			{"Name": "Ed", "Text": "Go fmt yourself!"}
-		]
-	`
-	type Message struct {
-		Name, Text string
-	}
-	dec := json.NewDecoder(strings.NewReader(jsonStream))
-
-	// read open bracket
-	t, err := dec.Token()
-	if err != nil {
-		log.Fatal(err)
-	}
-	fmt.Printf("%T: %v\n", t, t)
-
-	var m Message
-	// while the array contains values
-	for dec.More() {
-
-		// decode an array value (Message)
-		err := dec.Decode(&m)
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		fmt.Printf("%v: %v\n", m.Name, m.Text)
-	}
-
-	// read closing bracket
-	t, err = dec.Token()
-	if err != nil {
-		log.Fatal(err)
-	}
-	fmt.Printf("%T: %v\n", t, t)
-
-	// Output:
-	// json.Delim: [
-	// Ed: Knock knock.
-	// Sam: Who's there?
-	// Ed: Go fmt.
-	// Sam: Go fmt who?
-	// Ed: Go fmt yourself!
-	// json.Delim: ]
-
-}
-
-// This example uses RawMessage to delay parsing part of a JSON message.
-func ExampleRawMessage() {
-	type Color struct {
-		Space string
-		Point json.RawMessage // delay parsing until we know the color space
-	}
-	type RGB struct {
-		R uint8
-		G uint8
-		B uint8
-	}
-	type YCbCr struct {
-		Y  uint8
-		Cb int8
-		Cr int8
-	}
-
-	var j = []byte(`[
-		{"Space": "YCbCr", "Point": {"Y": 255, "Cb": 0, "Cr": -10}},
-		{"Space": "RGB",   "Point": {"R": 98, "G": 218, "B": 255}}
-	]`)
-	var colors []Color
-	err := json.Unmarshal(j, &colors)
-	if err != nil {
-		log.Fatalln("error:", err)
-	}
-
-	for _, c := range colors {
-		var dst interface{}
-		switch c.Space {
-		case "RGB":
-			dst = new(RGB)
-		case "YCbCr":
-			dst = new(YCbCr)
-		}
-		err := json.Unmarshal(c.Point, dst)
-		if err != nil {
-			log.Fatalln("error:", err)
-		}
-		fmt.Println(c.Space, dst)
-	}
-	// Output:
-	// YCbCr &{255 0 -10}
-	// RGB &{98 218 255}
-}
-
-func ExampleIndent() {
-	type Road struct {
-		Name   string
-		Number int
-	}
-	roads := []Road{
-		{"Diamond Fork", 29},
-		{"Sheep Creek", 51},
-	}
-
-	b, err := json.Marshal(roads)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	var out bytes.Buffer
-	json.Indent(&out, b, "=", "\t")
-	out.WriteTo(os.Stdout)
-	// Output:
-	// [
-	// =	{
-	// =		"Name": "Diamond Fork",
-	// =		"Number": 29
-	// =	},
-	// =	{
-	// =		"Name": "Sheep Creek",
-	// =		"Number": 51
-	// =	}
-	// =]
-}

vendor/gopkg.in.o/mgo.v2/internal/json/extension.go

@@ -1,95 +0,0 @@
-package json
-
-import (
-	"reflect"
-)
-
-// Extension holds a set of additional rules to be used when unmarshaling
-// strict JSON or JSON-like content.
-type Extension struct {
-	funcs  map[string]funcExt
-	consts map[string]interface{}
-	keyed  map[string]func([]byte) (interface{}, error)
-	encode map[reflect.Type]func(v interface{}) ([]byte, error)
-
-	unquotedKeys   bool
-	trailingCommas bool
-}
-
-type funcExt struct {
-	key  string
-	args []string
-}
-
-// Extend changes the decoder behavior to consider the provided extension.
-func (dec *Decoder) Extend(ext *Extension) { dec.d.ext = *ext }
-
-// Extend changes the encoder behavior to consider the provided extension.
-func (enc *Encoder) Extend(ext *Extension) { enc.ext = *ext }
-
-// Extend includes in e the extensions defined in ext.
-func (e *Extension) Extend(ext *Extension) {
-	for name, fext := range ext.funcs {
-		e.DecodeFunc(name, fext.key, fext.args...)
-	}
-	for name, value := range ext.consts {
-		e.DecodeConst(name, value)
-	}
-	for key, decode := range ext.keyed {
-		e.DecodeKeyed(key, decode)
-	}
-	for typ, encode := range ext.encode {
-		if e.encode == nil {
-			e.encode = make(map[reflect.Type]func(v interface{}) ([]byte, error))
-		}
-		e.encode[typ] = encode
-	}
-}
-
-// DecodeFunc defines a function call that may be observed inside JSON content.
-// A function with the provided name will be unmarshaled as the document
-// {key: {args[0]: ..., args[N]: ...}}.
-func (e *Extension) DecodeFunc(name string, key string, args ...string) {
-	if e.funcs == nil {
-		e.funcs = make(map[string]funcExt)
-	}
-	e.funcs[name] = funcExt{key, args}
-}
-
-// DecodeConst defines a constant name that may be observed inside JSON content
-// and will be decoded with the provided value.
-func (e *Extension) DecodeConst(name string, value interface{}) {
-	if e.consts == nil {
-		e.consts = make(map[string]interface{})
-	}
-	e.consts[name] = value
-}
-
-// DecodeKeyed defines a key that when observed as the first element inside a
-// JSON document triggers the decoding of that document via the provided
-// decode function.
-func (e *Extension) DecodeKeyed(key string, decode func(data []byte) (interface{}, error)) {
-	if e.keyed == nil {
-		e.keyed = make(map[string]func([]byte) (interface{}, error))
-	}
-	e.keyed[key] = decode
-}
-
-// DecodeUnquotedKeys defines whether to accept map keys that are unquoted strings.
-func (e *Extension) DecodeUnquotedKeys(accept bool) {
-	e.unquotedKeys = accept
-}
-
-// DecodeTrailingCommas defines whether to accept trailing commas in maps and arrays.
-func (e *Extension) DecodeTrailingCommas(accept bool) {
-	e.trailingCommas = accept
-}
-
-// EncodeType registers a function to encode values with the same type of the
-// provided sample.
-func (e *Extension) EncodeType(sample interface{}, encode func(v interface{}) ([]byte, error)) {
-	if e.encode == nil {
-		e.encode = make(map[reflect.Type]func(v interface{}) ([]byte, error))
-	}
-	e.encode[reflect.TypeOf(sample)] = encode
-}

vendor/gopkg.in.o/mgo.v2/internal/json/extension_test.go

@@ -1,218 +0,0 @@
-package json
-
-import (
-	"bytes"
-	"fmt"
-	"reflect"
-	"strconv"
-	"testing"
-)
-
-type funcN struct {
-	Arg1 int `json:"arg1"`
-	Arg2 int `json:"arg2"`
-}
-
-type funcs struct {
-	Func2 *funcN `json:"$func2"`
-	Func1 *funcN `json:"$func1"`
-}
-
-type funcsText struct {
-	Func1 jsonText `json:"$func1"`
-	Func2 jsonText `json:"$func2"`
-}
-
-type jsonText struct {
-	json string
-}
-
-func (jt *jsonText) UnmarshalJSON(data []byte) error {
-	jt.json = string(data)
-	return nil
-}
-
-type nestedText struct {
-	F jsonText
-	B bool
-}
-
-type unquotedKey struct {
-	S string `json:"$k_1"`
-}
-
-var ext Extension
-
-type keyed string
-
-func decodeKeyed(data []byte) (interface{}, error) {
-	return keyed(data), nil
-}
-
-type keyedType struct {
-	K keyed
-	I int
-}
-
-type docint int
-
-type const1Type struct{}
-
-var const1 = new(const1Type)
-
-func init() {
-	ext.DecodeFunc("Func1", "$func1")
-	ext.DecodeFunc("Func2", "$func2", "arg1", "arg2")
-	ext.DecodeFunc("Func3", "$func3", "arg1")
-	ext.DecodeFunc("new Func4", "$func4", "arg1")
-
-	ext.DecodeConst("Const1", const1)
-
-	ext.DecodeKeyed("$key1", decodeKeyed)
-	ext.DecodeKeyed("$func3", decodeKeyed)
-
-	ext.EncodeType(docint(0), func(v interface{}) ([]byte, error) {
-		s := `{"$docint": ` + strconv.Itoa(int(v.(docint))) + `}`
-		return []byte(s), nil
-	})
-
-	ext.DecodeUnquotedKeys(true)
-	ext.DecodeTrailingCommas(true)
-}
-
-type extDecodeTest struct {
-	in  string
-	ptr interface{}
-	out interface{}
-	err error
-
-	noext bool
-}
-
-var extDecodeTests = []extDecodeTest{
-	// Functions
-	{in: `Func1()`, ptr: new(interface{}), out: map[string]interface{}{
-		"$func1": map[string]interface{}{},
-	}},
-	{in: `{"v": Func1()}`, ptr: new(interface{}), out: map[string]interface{}{
-		"v": map[string]interface{}{"$func1": map[string]interface{}{}},
-	}},
-	{in: `Func2(1)`, ptr: new(interface{}), out: map[string]interface{}{
-		"$func2": map[string]interface{}{"arg1": float64(1)},
-	}},
-	{in: `Func2(1, 2)`, ptr: new(interface{}), out: map[string]interface{}{
-		"$func2": map[string]interface{}{"arg1": float64(1), "arg2": float64(2)},
-	}},
-	{in: `Func2(Func1())`, ptr: new(interface{}), out: map[string]interface{}{
-		"$func2": map[string]interface{}{"arg1": map[string]interface{}{"$func1": map[string]interface{}{}}},
-	}},
-	{in: `Func2(1, 2, 3)`, ptr: new(interface{}), err: fmt.Errorf("json: too many arguments for function Func2")},
-	{in: `BadFunc()`, ptr: new(interface{}), err: fmt.Errorf(`json: unknown function "BadFunc"`)},
-
-	{in: `Func1()`, ptr: new(funcs), out: funcs{Func1: &funcN{}}},
-	{in: `Func2(1)`, ptr: new(funcs), out: funcs{Func2: &funcN{Arg1: 1}}},
-	{in: `Func2(1, 2)`, ptr: new(funcs), out: funcs{Func2: &funcN{Arg1: 1, Arg2: 2}}},
-
-	{in: `Func2(1, 2, 3)`, ptr: new(funcs), err: fmt.Errorf("json: too many arguments for function Func2")},
-	{in: `BadFunc()`, ptr: new(funcs), err: fmt.Errorf(`json: unknown function "BadFunc"`)},
-
-	{in: `Func2(1)`, ptr: new(jsonText), out: jsonText{"Func2(1)"}},
-	{in: `Func2(1, 2)`, ptr: new(funcsText), out: funcsText{Func2: jsonText{"Func2(1, 2)"}}},
-	{in: `{"f": Func2(1, 2), "b": true}`, ptr: new(nestedText), out: nestedText{jsonText{"Func2(1, 2)"}, true}},
-
-	{in: `Func1()`, ptr: new(struct{}), out: struct{}{}},
-
-	// Functions with "new" prefix
-	{in: `new Func4(1)`, ptr: new(interface{}), out: map[string]interface{}{
-		"$func4": map[string]interface{}{"arg1": float64(1)},
-	}},
-
-	// Constants
-	{in: `Const1`, ptr: new(interface{}), out: const1},
-	{in: `{"c": Const1}`, ptr: new(struct{ C *const1Type }), out: struct{ C *const1Type }{const1}},
-
-	// Keyed documents
-	{in: `{"v": {"$key1": 1}}`, ptr: new(interface{}), out: map[string]interface{}{"v": keyed(`{"$key1": 1}`)}},
-	{in: `{"k": {"$key1": 1}}`, ptr: new(keyedType), out: keyedType{K: keyed(`{"$key1": 1}`)}},
-	{in: `{"i": {"$key1": 1}}`, ptr: new(keyedType), err: &UnmarshalTypeError{"object", reflect.TypeOf(0), 18}},
-
-	// Keyed function documents
-	{in: `{"v": Func3()}`, ptr: new(interface{}), out: map[string]interface{}{"v": keyed(`Func3()`)}},
-	{in: `{"k": Func3()}`, ptr: new(keyedType), out: keyedType{K: keyed(`Func3()`)}},
-	{in: `{"i": Func3()}`, ptr: new(keyedType), err: &UnmarshalTypeError{"object", reflect.TypeOf(0), 13}},
-
-	// Unquoted keys
-	{in: `{$k_1: "bar"}`, ptr: new(interface{}), out: map[string]interface{}{"$k_1": "bar"}},
-	{in: `{$k_1: "bar"}`, ptr: new(unquotedKey), out: unquotedKey{"bar"}},
-
-	{in: `{$k_1: "bar"}`, noext: true, ptr: new(interface{}),
-		err: &SyntaxError{"invalid character '$' looking for beginning of object key string", 2}},
-	{in: `{$k_1: "bar"}`, noext: true, ptr: new(unquotedKey),
-		err: &SyntaxError{"invalid character '$' looking for beginning of object key string", 2}},
-
-	// Trailing commas
-	{in: `{"k": "v",}`, ptr: new(interface{}), out: map[string]interface{}{"k": "v"}},
-	{in: `{"k": "v",}`, ptr: new(struct{}), out: struct{}{}},
-	{in: `["v",]`, ptr: new(interface{}), out: []interface{}{"v"}},
-
-	{in: `{"k": "v",}`, noext: true, ptr: new(interface{}),
-		err: &SyntaxError{"invalid character '}' looking for beginning of object key string", 11}},
-	{in: `{"k": "v",}`, noext: true, ptr: new(struct{}),
-		err: &SyntaxError{"invalid character '}' looking for beginning of object key string", 11}},
-	{in: `["a",]`, noext: true, ptr: new(interface{}),
-		err: &SyntaxError{"invalid character ']' looking for beginning of value", 6}},
-}
-
-type extEncodeTest struct {
-	in  interface{}
-	out string
-	err error
-}
-
-var extEncodeTests = []extEncodeTest{
-	{in: docint(13), out: "{\"$docint\":13}\n"},
-}
-
-func TestExtensionDecode(t *testing.T) {
-	for i, tt := range extDecodeTests {
-		in := []byte(tt.in)
-
-		// v = new(right-type)
-		v := reflect.New(reflect.TypeOf(tt.ptr).Elem())
-		dec := NewDecoder(bytes.NewReader(in))
-		if !tt.noext {
-			dec.Extend(&ext)
-		}
-		if err := dec.Decode(v.Interface()); !reflect.DeepEqual(err, tt.err) {
-			t.Errorf("#%d: %v, want %v", i, err, tt.err)
-			continue
-		} else if err != nil {
-			continue
-		}
-		if !reflect.DeepEqual(v.Elem().Interface(), tt.out) {
-			t.Errorf("#%d: mismatch\nhave: %#+v\nwant: %#+v", i, v.Elem().Interface(), tt.out)
-			data, _ := Marshal(v.Elem().Interface())
-			t.Logf("%s", string(data))
-			data, _ = Marshal(tt.out)
-			t.Logf("%s", string(data))
-			continue
-		}
-	}
-}
-
-func TestExtensionEncode(t *testing.T) {
-	var buf bytes.Buffer
-	for i, tt := range extEncodeTests {
-		buf.Truncate(0)
-		enc := NewEncoder(&buf)
-		enc.Extend(&ext)
-		err := enc.Encode(tt.in)
-		if !reflect.DeepEqual(err, tt.err) {
-			t.Errorf("#%d: %v, want %v", i, err, tt.err)
-			continue
-		}
-		if buf.String() != tt.out {
-			t.Errorf("#%d: mismatch\nhave: %q\nwant: %q", i, buf.String(), tt.out)
-		}
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/json/fold.go

@@ -1,143 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"bytes"
-	"unicode/utf8"
-)
-
-const (
-	caseMask     = ^byte(0x20) // Mask to ignore case in ASCII.
-	kelvin       = '\u212a'
-	smallLongEss = '\u017f'
-)
-
-// foldFunc returns one of four different case folding equivalence
-// functions, from most general (and slow) to fastest:
-//
-// 1) bytes.EqualFold, if the key s contains any non-ASCII UTF-8
-// 2) equalFoldRight, if s contains special folding ASCII ('k', 'K', 's', 'S')
-// 3) asciiEqualFold, no special, but includes non-letters (including _)
-// 4) simpleLetterEqualFold, no specials, no non-letters.
-//
-// The letters S and K are special because they map to 3 runes, not just 2:
-//  * S maps to s and to U+017F 'ſ' Latin small letter long s
-//  * k maps to K and to U+212A 'K' Kelvin sign
-// See https://play.golang.org/p/tTxjOc0OGo
-//
-// The returned function is specialized for matching against s and
-// should only be given s. It's not curried for performance reasons.
-func foldFunc(s []byte) func(s, t []byte) bool {
-	nonLetter := false
-	special := false // special letter
-	for _, b := range s {
-		if b >= utf8.RuneSelf {
-			return bytes.EqualFold
-		}
-		upper := b & caseMask
-		if upper < 'A' || upper > 'Z' {
-			nonLetter = true
-		} else if upper == 'K' || upper == 'S' {
-			// See above for why these letters are special.
-			special = true
-		}
-	}
-	if special {
-		return equalFoldRight
-	}
-	if nonLetter {
-		return asciiEqualFold
-	}
-	return simpleLetterEqualFold
-}
-
-// equalFoldRight is a specialization of bytes.EqualFold when s is
-// known to be all ASCII (including punctuation), but contains an 's',
-// 'S', 'k', or 'K', requiring a Unicode fold on the bytes in t.
-// See comments on foldFunc.
-func equalFoldRight(s, t []byte) bool {
-	for _, sb := range s {
-		if len(t) == 0 {
-			return false
-		}
-		tb := t[0]
-		if tb < utf8.RuneSelf {
-			if sb != tb {
-				sbUpper := sb & caseMask
-				if 'A' <= sbUpper && sbUpper <= 'Z' {
-					if sbUpper != tb&caseMask {
-						return false
-					}
-				} else {
-					return false
-				}
-			}
-			t = t[1:]
-			continue
-		}
-		// sb is ASCII and t is not. t must be either kelvin
-		// sign or long s; sb must be s, S, k, or K.
-		tr, size := utf8.DecodeRune(t)
-		switch sb {
-		case 's', 'S':
-			if tr != smallLongEss {
-				return false
-			}
-		case 'k', 'K':
-			if tr != kelvin {
-				return false
-			}
-		default:
-			return false
-		}
-		t = t[size:]
-
-	}
-	if len(t) > 0 {
-		return false
-	}
-	return true
-}
-
-// asciiEqualFold is a specialization of bytes.EqualFold for use when
-// s is all ASCII (but may contain non-letters) and contains no
-// special-folding letters.
-// See comments on foldFunc.
-func asciiEqualFold(s, t []byte) bool {
-	if len(s) != len(t) {
-		return false
-	}
-	for i, sb := range s {
-		tb := t[i]
-		if sb == tb {
-			continue
-		}
-		if ('a' <= sb && sb <= 'z') || ('A' <= sb && sb <= 'Z') {
-			if sb&caseMask != tb&caseMask {
-				return false
-			}
-		} else {
-			return false
-		}
-	}
-	return true
-}
-
-// simpleLetterEqualFold is a specialization of bytes.EqualFold for
-// use when s is all ASCII letters (no underscores, etc) and also
-// doesn't contain 'k', 'K', 's', or 'S'.
-// See comments on foldFunc.
-func simpleLetterEqualFold(s, t []byte) bool {
-	if len(s) != len(t) {
-		return false
-	}
-	for i, b := range s {
-		if b&caseMask != t[i]&caseMask {
-			return false
-		}
-	}
-	return true
-}

vendor/gopkg.in.o/mgo.v2/internal/json/fold_test.go

@@ -1,116 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"bytes"
-	"strings"
-	"testing"
-	"unicode/utf8"
-)
-
-var foldTests = []struct {
-	fn   func(s, t []byte) bool
-	s, t string
-	want bool
-}{
-	{equalFoldRight, "", "", true},
-	{equalFoldRight, "a", "a", true},
-	{equalFoldRight, "", "a", false},
-	{equalFoldRight, "a", "", false},
-	{equalFoldRight, "a", "A", true},
-	{equalFoldRight, "AB", "ab", true},
-	{equalFoldRight, "AB", "ac", false},
-	{equalFoldRight, "sbkKc", "ſbKKc", true},
-	{equalFoldRight, "SbKkc", "ſbKKc", true},
-	{equalFoldRight, "SbKkc", "ſbKK", false},
-	{equalFoldRight, "e", "é", false},
-	{equalFoldRight, "s", "S", true},
-
-	{simpleLetterEqualFold, "", "", true},
-	{simpleLetterEqualFold, "abc", "abc", true},
-	{simpleLetterEqualFold, "abc", "ABC", true},
-	{simpleLetterEqualFold, "abc", "ABCD", false},
-	{simpleLetterEqualFold, "abc", "xxx", false},
-
-	{asciiEqualFold, "a_B", "A_b", true},
-	{asciiEqualFold, "aa@", "aa`", false}, // verify 0x40 and 0x60 aren't case-equivalent
-}
-
-func TestFold(t *testing.T) {
-	for i, tt := range foldTests {
-		if got := tt.fn([]byte(tt.s), []byte(tt.t)); got != tt.want {
-			t.Errorf("%d. %q, %q = %v; want %v", i, tt.s, tt.t, got, tt.want)
-		}
-		truth := strings.EqualFold(tt.s, tt.t)
-		if truth != tt.want {
-			t.Errorf("strings.EqualFold doesn't agree with case %d", i)
-		}
-	}
-}
-
-func TestFoldAgainstUnicode(t *testing.T) {
-	const bufSize = 5
-	buf1 := make([]byte, 0, bufSize)
-	buf2 := make([]byte, 0, bufSize)
-	var runes []rune
-	for i := 0x20; i <= 0x7f; i++ {
-		runes = append(runes, rune(i))
-	}
-	runes = append(runes, kelvin, smallLongEss)
-
-	funcs := []struct {
-		name   string
-		fold   func(s, t []byte) bool
-		letter bool // must be ASCII letter
-		simple bool // must be simple ASCII letter (not 'S' or 'K')
-	}{
-		{
-			name: "equalFoldRight",
-			fold: equalFoldRight,
-		},
-		{
-			name:   "asciiEqualFold",
-			fold:   asciiEqualFold,
-			simple: true,
-		},
-		{
-			name:   "simpleLetterEqualFold",
-			fold:   simpleLetterEqualFold,
-			simple: true,
-			letter: true,
-		},
-	}
-
-	for _, ff := range funcs {
-		for _, r := range runes {
-			if r >= utf8.RuneSelf {
-				continue
-			}
-			if ff.letter && !isASCIILetter(byte(r)) {
-				continue
-			}
-			if ff.simple && (r == 's' || r == 'S' || r == 'k' || r == 'K') {
-				continue
-			}
-			for _, r2 := range runes {
-				buf1 := append(buf1[:0], 'x')
-				buf2 := append(buf2[:0], 'x')
-				buf1 = buf1[:1+utf8.EncodeRune(buf1[1:bufSize], r)]
-				buf2 = buf2[:1+utf8.EncodeRune(buf2[1:bufSize], r2)]
-				buf1 = append(buf1, 'x')
-				buf2 = append(buf2, 'x')
-				want := bytes.EqualFold(buf1, buf2)
-				if got := ff.fold(buf1, buf2); got != want {
-					t.Errorf("%s(%q, %q) = %v; want %v", ff.name, buf1, buf2, got, want)
-				}
-			}
-		}
-	}
-}
-
-func isASCIILetter(b byte) bool {
-	return ('A' <= b && b <= 'Z') || ('a' <= b && b <= 'z')
-}

vendor/gopkg.in.o/mgo.v2/internal/json/indent.go

@@ -1,141 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import "bytes"
-
-// Compact appends to dst the JSON-encoded src with
-// insignificant space characters elided.
-func Compact(dst *bytes.Buffer, src []byte) error {
-	return compact(dst, src, false)
-}
-
-func compact(dst *bytes.Buffer, src []byte, escape bool) error {
-	origLen := dst.Len()
-	var scan scanner
-	scan.reset()
-	start := 0
-	for i, c := range src {
-		if escape && (c == '<' || c == '>' || c == '&') {
-			if start < i {
-				dst.Write(src[start:i])
-			}
-			dst.WriteString(`\u00`)
-			dst.WriteByte(hex[c>>4])
-			dst.WriteByte(hex[c&0xF])
-			start = i + 1
-		}
-		// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
-		if c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
-			if start < i {
-				dst.Write(src[start:i])
-			}
-			dst.WriteString(`\u202`)
-			dst.WriteByte(hex[src[i+2]&0xF])
-			start = i + 3
-		}
-		v := scan.step(&scan, c)
-		if v >= scanSkipSpace {
-			if v == scanError {
-				break
-			}
-			if start < i {
-				dst.Write(src[start:i])
-			}
-			start = i + 1
-		}
-	}
-	if scan.eof() == scanError {
-		dst.Truncate(origLen)
-		return scan.err
-	}
-	if start < len(src) {
-		dst.Write(src[start:])
-	}
-	return nil
-}
-
-func newline(dst *bytes.Buffer, prefix, indent string, depth int) {
-	dst.WriteByte('\n')
-	dst.WriteString(prefix)
-	for i := 0; i < depth; i++ {
-		dst.WriteString(indent)
-	}
-}
-
-// Indent appends to dst an indented form of the JSON-encoded src.
-// Each element in a JSON object or array begins on a new,
-// indented line beginning with prefix followed by one or more
-// copies of indent according to the indentation nesting.
-// The data appended to dst does not begin with the prefix nor
-// any indentation, to make it easier to embed inside other formatted JSON data.
-// Although leading space characters (space, tab, carriage return, newline)
-// at the beginning of src are dropped, trailing space characters
-// at the end of src are preserved and copied to dst.
-// For example, if src has no trailing spaces, neither will dst;
-// if src ends in a trailing newline, so will dst.
-func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
-	origLen := dst.Len()
-	var scan scanner
-	scan.reset()
-	needIndent := false
-	depth := 0
-	for _, c := range src {
-		scan.bytes++
-		v := scan.step(&scan, c)
-		if v == scanSkipSpace {
-			continue
-		}
-		if v == scanError {
-			break
-		}
-		if needIndent && v != scanEndObject && v != scanEndArray {
-			needIndent = false
-			depth++
-			newline(dst, prefix, indent, depth)
-		}
-
-		// Emit semantically uninteresting bytes
-		// (in particular, punctuation in strings) unmodified.
-		if v == scanContinue {
-			dst.WriteByte(c)
-			continue
-		}
-
-		// Add spacing around real punctuation.
-		switch c {
-		case '{', '[':
-			// delay indent so that empty object and array are formatted as {} and [].
-			needIndent = true
-			dst.WriteByte(c)
-
-		case ',':
-			dst.WriteByte(c)
-			newline(dst, prefix, indent, depth)
-
-		case ':':
-			dst.WriteByte(c)
-			dst.WriteByte(' ')
-
-		case '}', ']':
-			if needIndent {
-				// suppress indent in empty object/array
-				needIndent = false
-			} else {
-				depth--
-				newline(dst, prefix, indent, depth)
-			}
-			dst.WriteByte(c)
-
-		default:
-			dst.WriteByte(c)
-		}
-	}
-	if scan.eof() == scanError {
-		dst.Truncate(origLen)
-		return scan.err
-	}
-	return nil
-}

vendor/gopkg.in.o/mgo.v2/internal/json/number_test.go

@@ -1,133 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"regexp"
-	"testing"
-)
-
-func TestNumberIsValid(t *testing.T) {
-	// From: http://stackoverflow.com/a/13340826
-	var jsonNumberRegexp = regexp.MustCompile(`^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$`)
-
-	validTests := []string{
-		"0",
-		"-0",
-		"1",
-		"-1",
-		"0.1",
-		"-0.1",
-		"1234",
-		"-1234",
-		"12.34",
-		"-12.34",
-		"12E0",
-		"12E1",
-		"12e34",
-		"12E-0",
-		"12e+1",
-		"12e-34",
-		"-12E0",
-		"-12E1",
-		"-12e34",
-		"-12E-0",
-		"-12e+1",
-		"-12e-34",
-		"1.2E0",
-		"1.2E1",
-		"1.2e34",
-		"1.2E-0",
-		"1.2e+1",
-		"1.2e-34",
-		"-1.2E0",
-		"-1.2E1",
-		"-1.2e34",
-		"-1.2E-0",
-		"-1.2e+1",
-		"-1.2e-34",
-		"0E0",
-		"0E1",
-		"0e34",
-		"0E-0",
-		"0e+1",
-		"0e-34",
-		"-0E0",
-		"-0E1",
-		"-0e34",
-		"-0E-0",
-		"-0e+1",
-		"-0e-34",
-	}
-
-	for _, test := range validTests {
-		if !isValidNumber(test) {
-			t.Errorf("%s should be valid", test)
-		}
-
-		var f float64
-		if err := Unmarshal([]byte(test), &f); err != nil {
-			t.Errorf("%s should be valid but Unmarshal failed: %v", test, err)
-		}
-
-		if !jsonNumberRegexp.MatchString(test) {
-			t.Errorf("%s should be valid but regexp does not match", test)
-		}
-	}
-
-	invalidTests := []string{
-		"",
-		"invalid",
-		"1.0.1",
-		"1..1",
-		"-1-2",
-		"012a42",
-		"01.2",
-		"012",
-		"12E12.12",
-		"1e2e3",
-		"1e+-2",
-		"1e--23",
-		"1e",
-		"e1",
-		"1e+",
-		"1ea",
-		"1a",
-		"1.a",
-		"1.",
-		"01",
-		"1.e1",
-	}
-
-	for _, test := range invalidTests {
-		if isValidNumber(test) {
-			t.Errorf("%s should be invalid", test)
-		}
-
-		var f float64
-		if err := Unmarshal([]byte(test), &f); err == nil {
-			t.Errorf("%s should be invalid but unmarshal wrote %v", test, f)
-		}
-
-		if jsonNumberRegexp.MatchString(test) {
-			t.Errorf("%s should be invalid but matches regexp", test)
-		}
-	}
-}
-
-func BenchmarkNumberIsValid(b *testing.B) {
-	s := "-61657.61667E+61673"
-	for i := 0; i < b.N; i++ {
-		isValidNumber(s)
-	}
-}
-
-func BenchmarkNumberIsValidRegexp(b *testing.B) {
-	var jsonNumberRegexp = regexp.MustCompile(`^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$`)
-	s := "-61657.61667E+61673"
-	for i := 0; i < b.N; i++ {
-		jsonNumberRegexp.MatchString(s)
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/json/scanner.go

@@ -1,697 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-// JSON value parser state machine.
-// Just about at the limit of what is reasonable to write by hand.
-// Some parts are a bit tedious, but overall it nicely factors out the
-// otherwise common code from the multiple scanning functions
-// in this package (Compact, Indent, checkValid, nextValue, etc).
-//
-// This file starts with two simple examples using the scanner
-// before diving into the scanner itself.
-
-import "strconv"
-
-// checkValid verifies that data is valid JSON-encoded data.
-// scan is passed in for use by checkValid to avoid an allocation.
-func checkValid(data []byte, scan *scanner) error {
-	scan.reset()
-	for _, c := range data {
-		scan.bytes++
-		if scan.step(scan, c) == scanError {
-			return scan.err
-		}
-	}
-	if scan.eof() == scanError {
-		return scan.err
-	}
-	return nil
-}
-
-// nextValue splits data after the next whole JSON value,
-// returning that value and the bytes that follow it as separate slices.
-// scan is passed in for use by nextValue to avoid an allocation.
-func nextValue(data []byte, scan *scanner) (value, rest []byte, err error) {
-	scan.reset()
-	for i, c := range data {
-		v := scan.step(scan, c)
-		if v >= scanEndObject {
-			switch v {
-			// probe the scanner with a space to determine whether we will
-			// get scanEnd on the next character. Otherwise, if the next character
-			// is not a space, scanEndTop allocates a needless error.
-			case scanEndObject, scanEndArray, scanEndParams:
-				if scan.step(scan, ' ') == scanEnd {
-					return data[:i+1], data[i+1:], nil
-				}
-			case scanError:
-				return nil, nil, scan.err
-			case scanEnd:
-				return data[:i], data[i:], nil
-			}
-		}
-	}
-	if scan.eof() == scanError {
-		return nil, nil, scan.err
-	}
-	return data, nil, nil
-}
-
-// A SyntaxError is a description of a JSON syntax error.
-type SyntaxError struct {
-	msg    string // description of error
-	Offset int64  // error occurred after reading Offset bytes
-}
-
-func (e *SyntaxError) Error() string { return e.msg }
-
-// A scanner is a JSON scanning state machine.
-// Callers call scan.reset() and then pass bytes in one at a time
-// by calling scan.step(&scan, c) for each byte.
-// The return value, referred to as an opcode, tells the
-// caller about significant parsing events like beginning
-// and ending literals, objects, and arrays, so that the
-// caller can follow along if it wishes.
-// The return value scanEnd indicates that a single top-level
-// JSON value has been completed, *before* the byte that
-// just got passed in.  (The indication must be delayed in order
-// to recognize the end of numbers: is 123 a whole value or
-// the beginning of 12345e+6?).
-type scanner struct {
-	// The step is a func to be called to execute the next transition.
-	// Also tried using an integer constant and a single func
-	// with a switch, but using the func directly was 10% faster
-	// on a 64-bit Mac Mini, and it's nicer to read.
-	step func(*scanner, byte) int
-
-	// Reached end of top-level value.
-	endTop bool
-
-	// Stack of what we're in the middle of - array values, object keys, object values.
-	parseState []int
-
-	// Error that happened, if any.
-	err error
-
-	// 1-byte redo (see undo method)
-	redo      bool
-	redoCode  int
-	redoState func(*scanner, byte) int
-
-	// total bytes consumed, updated by decoder.Decode
-	bytes int64
-}
-
-// These values are returned by the state transition functions
-// assigned to scanner.state and the method scanner.eof.
-// They give details about the current state of the scan that
-// callers might be interested to know about.
-// It is okay to ignore the return value of any particular
-// call to scanner.state: if one call returns scanError,
-// every subsequent call will return scanError too.
-const (
-	// Continue.
-	scanContinue     = iota // uninteresting byte
-	scanBeginLiteral        // end implied by next result != scanContinue
-	scanBeginObject         // begin object
-	scanObjectKey           // just finished object key (string)
-	scanObjectValue         // just finished non-last object value
-	scanEndObject           // end object (implies scanObjectValue if possible)
-	scanBeginArray          // begin array
-	scanArrayValue          // just finished array value
-	scanEndArray            // end array (implies scanArrayValue if possible)
-	scanBeginName           // begin function call
-	scanParam               // begin function argument
-	scanEndParams           // end function call
-	scanSkipSpace           // space byte; can skip; known to be last "continue" result
-
-	// Stop.
-	scanEnd   // top-level value ended *before* this byte; known to be first "stop" result
-	scanError // hit an error, scanner.err.
-)
-
-// These values are stored in the parseState stack.
-// They give the current state of a composite value
-// being scanned. If the parser is inside a nested value
-// the parseState describes the nested state, outermost at entry 0.
-const (
-	parseObjectKey   = iota // parsing object key (before colon)
-	parseObjectValue        // parsing object value (after colon)
-	parseArrayValue         // parsing array value
-	parseName               // parsing unquoted name
-	parseParam              // parsing function argument value
-)
-
-// reset prepares the scanner for use.
-// It must be called before calling s.step.
-func (s *scanner) reset() {
-	s.step = stateBeginValue
-	s.parseState = s.parseState[0:0]
-	s.err = nil
-	s.redo = false
-	s.endTop = false
-}
-
-// eof tells the scanner that the end of input has been reached.
-// It returns a scan status just as s.step does.
-func (s *scanner) eof() int {
-	if s.err != nil {
-		return scanError
-	}
-	if s.endTop {
-		return scanEnd
-	}
-	s.step(s, ' ')
-	if s.endTop {
-		return scanEnd
-	}
-	if s.err == nil {
-		s.err = &SyntaxError{"unexpected end of JSON input", s.bytes}
-	}
-	return scanError
-}
-
-// pushParseState pushes a new parse state p onto the parse stack.
-func (s *scanner) pushParseState(p int) {
-	s.parseState = append(s.parseState, p)
-}
-
-// popParseState pops a parse state (already obtained) off the stack
-// and updates s.step accordingly.
-func (s *scanner) popParseState() {
-	n := len(s.parseState) - 1
-	s.parseState = s.parseState[0:n]
-	s.redo = false
-	if n == 0 {
-		s.step = stateEndTop
-		s.endTop = true
-	} else {
-		s.step = stateEndValue
-	}
-}
-
-func isSpace(c byte) bool {
-	return c == ' ' || c == '\t' || c == '\r' || c == '\n'
-}
-
-// stateBeginValueOrEmpty is the state after reading `[`.
-func stateBeginValueOrEmpty(s *scanner, c byte) int {
-	if c <= ' ' && isSpace(c) {
-		return scanSkipSpace
-	}
-	if c == ']' {
-		return stateEndValue(s, c)
-	}
-	return stateBeginValue(s, c)
-}
-
-// stateBeginValue is the state at the beginning of the input.
-func stateBeginValue(s *scanner, c byte) int {
-	if c <= ' ' && isSpace(c) {
-		return scanSkipSpace
-	}
-	switch c {
-	case '{':
-		s.step = stateBeginStringOrEmpty
-		s.pushParseState(parseObjectKey)
-		return scanBeginObject
-	case '[':
-		s.step = stateBeginValueOrEmpty
-		s.pushParseState(parseArrayValue)
-		return scanBeginArray
-	case '"':
-		s.step = stateInString
-		return scanBeginLiteral
-	case '-':
-		s.step = stateNeg
-		return scanBeginLiteral
-	case '0': // beginning of 0.123
-		s.step = state0
-		return scanBeginLiteral
-	case 'n':
-		s.step = stateNew0
-		return scanBeginName
-	}
-	if '1' <= c && c <= '9' { // beginning of 1234.5
-		s.step = state1
-		return scanBeginLiteral
-	}
-	if isName(c) {
-		s.step = stateName
-		return scanBeginName
-	}
-	return s.error(c, "looking for beginning of value")
-}
-
-func isName(c byte) bool {
-	return c == '$' || c == '_' || 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || '0' <= c && c <= '9'
-}
-
-// stateBeginStringOrEmpty is the state after reading `{`.
-func stateBeginStringOrEmpty(s *scanner, c byte) int {
-	if c <= ' ' && isSpace(c) {
-		return scanSkipSpace
-	}
-	if c == '}' {
-		n := len(s.parseState)
-		s.parseState[n-1] = parseObjectValue
-		return stateEndValue(s, c)
-	}
-	return stateBeginString(s, c)
-}
-
-// stateBeginString is the state after reading `{"key": value,`.
-func stateBeginString(s *scanner, c byte) int {
-	if c <= ' ' && isSpace(c) {
-		return scanSkipSpace
-	}
-	if c == '"' {
-		s.step = stateInString
-		return scanBeginLiteral
-	}
-	if isName(c) {
-		s.step = stateName
-		return scanBeginName
-	}
-	return s.error(c, "looking for beginning of object key string")
-}
-
-// stateEndValue is the state after completing a value,
-// such as after reading `{}` or `true` or `["x"`.
-func stateEndValue(s *scanner, c byte) int {
-	n := len(s.parseState)
-	if n == 0 {
-		// Completed top-level before the current byte.
-		s.step = stateEndTop
-		s.endTop = true
-		return stateEndTop(s, c)
-	}
-	if c <= ' ' && isSpace(c) {
-		s.step = stateEndValue
-		return scanSkipSpace
-	}
-	ps := s.parseState[n-1]
-	switch ps {
-	case parseObjectKey:
-		if c == ':' {
-			s.parseState[n-1] = parseObjectValue
-			s.step = stateBeginValue
-			return scanObjectKey
-		}
-		return s.error(c, "after object key")
-	case parseObjectValue:
-		if c == ',' {
-			s.parseState[n-1] = parseObjectKey
-			s.step = stateBeginStringOrEmpty
-			return scanObjectValue
-		}
-		if c == '}' {
-			s.popParseState()
-			return scanEndObject
-		}
-		return s.error(c, "after object key:value pair")
-	case parseArrayValue:
-		if c == ',' {
-			s.step = stateBeginValueOrEmpty
-			return scanArrayValue
-		}
-		if c == ']' {
-			s.popParseState()
-			return scanEndArray
-		}
-		return s.error(c, "after array element")
-	case parseParam:
-		if c == ',' {
-			s.step = stateBeginValue
-			return scanParam
-		}
-		if c == ')' {
-			s.popParseState()
-			return scanEndParams
-		}
-		return s.error(c, "after array element")
-	}
-	return s.error(c, "")
-}
-
-// stateEndTop is the state after finishing the top-level value,
-// such as after reading `{}` or `[1,2,3]`.
-// Only space characters should be seen now.
-func stateEndTop(s *scanner, c byte) int {
-	if c != ' ' && c != '\t' && c != '\r' && c != '\n' {
-		// Complain about non-space byte on next call.
-		s.error(c, "after top-level value")
-	}
-	return scanEnd
-}
-
-// stateInString is the state after reading `"`.
-func stateInString(s *scanner, c byte) int {
-	if c == '"' {
-		s.step = stateEndValue
-		return scanContinue
-	}
-	if c == '\\' {
-		s.step = stateInStringEsc
-		return scanContinue
-	}
-	if c < 0x20 {
-		return s.error(c, "in string literal")
-	}
-	return scanContinue
-}
-
-// stateInStringEsc is the state after reading `"\` during a quoted string.
-func stateInStringEsc(s *scanner, c byte) int {
-	switch c {
-	case 'b', 'f', 'n', 'r', 't', '\\', '/', '"':
-		s.step = stateInString
-		return scanContinue
-	case 'u':
-		s.step = stateInStringEscU
-		return scanContinue
-	}
-	return s.error(c, "in string escape code")
-}
-
-// stateInStringEscU is the state after reading `"\u` during a quoted string.
-func stateInStringEscU(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
-		s.step = stateInStringEscU1
-		return scanContinue
-	}
-	// numbers
-	return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateInStringEscU1 is the state after reading `"\u1` during a quoted string.
-func stateInStringEscU1(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
-		s.step = stateInStringEscU12
-		return scanContinue
-	}
-	// numbers
-	return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateInStringEscU12 is the state after reading `"\u12` during a quoted string.
-func stateInStringEscU12(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
-		s.step = stateInStringEscU123
-		return scanContinue
-	}
-	// numbers
-	return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateInStringEscU123 is the state after reading `"\u123` during a quoted string.
-func stateInStringEscU123(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
-		s.step = stateInString
-		return scanContinue
-	}
-	// numbers
-	return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateNeg is the state after reading `-` during a number.
-func stateNeg(s *scanner, c byte) int {
-	if c == '0' {
-		s.step = state0
-		return scanContinue
-	}
-	if '1' <= c && c <= '9' {
-		s.step = state1
-		return scanContinue
-	}
-	return s.error(c, "in numeric literal")
-}
-
-// state1 is the state after reading a non-zero integer during a number,
-// such as after reading `1` or `100` but not `0`.
-func state1(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' {
-		s.step = state1
-		return scanContinue
-	}
-	return state0(s, c)
-}
-
-// state0 is the state after reading `0` during a number.
-func state0(s *scanner, c byte) int {
-	if c == '.' {
-		s.step = stateDot
-		return scanContinue
-	}
-	if c == 'e' || c == 'E' {
-		s.step = stateE
-		return scanContinue
-	}
-	return stateEndValue(s, c)
-}
-
-// stateDot is the state after reading the integer and decimal point in a number,
-// such as after reading `1.`.
-func stateDot(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' {
-		s.step = stateDot0
-		return scanContinue
-	}
-	return s.error(c, "after decimal point in numeric literal")
-}
-
-// stateDot0 is the state after reading the integer, decimal point, and subsequent
-// digits of a number, such as after reading `3.14`.
-func stateDot0(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' {
-		return scanContinue
-	}
-	if c == 'e' || c == 'E' {
-		s.step = stateE
-		return scanContinue
-	}
-	return stateEndValue(s, c)
-}
-
-// stateE is the state after reading the mantissa and e in a number,
-// such as after reading `314e` or `0.314e`.
-func stateE(s *scanner, c byte) int {
-	if c == '+' || c == '-' {
-		s.step = stateESign
-		return scanContinue
-	}
-	return stateESign(s, c)
-}
-
-// stateESign is the state after reading the mantissa, e, and sign in a number,
-// such as after reading `314e-` or `0.314e+`.
-func stateESign(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' {
-		s.step = stateE0
-		return scanContinue
-	}
-	return s.error(c, "in exponent of numeric literal")
-}
-
-// stateE0 is the state after reading the mantissa, e, optional sign,
-// and at least one digit of the exponent in a number,
-// such as after reading `314e-2` or `0.314e+1` or `3.14e0`.
-func stateE0(s *scanner, c byte) int {
-	if '0' <= c && c <= '9' {
-		return scanContinue
-	}
-	return stateEndValue(s, c)
-}
-
-// stateNew0 is the state after reading `n`.
-func stateNew0(s *scanner, c byte) int {
-	if c == 'e' {
-		s.step = stateNew1
-		return scanContinue
-	}
-	s.step = stateName
-	return stateName(s, c)
-}
-
-// stateNew1 is the state after reading `ne`.
-func stateNew1(s *scanner, c byte) int {
-	if c == 'w' {
-		s.step = stateNew2
-		return scanContinue
-	}
-	s.step = stateName
-	return stateName(s, c)
-}
-
-// stateNew2 is the state after reading `new`.
-func stateNew2(s *scanner, c byte) int {
-	s.step = stateName
-	if c == ' ' {
-		return scanContinue
-	}
-	return stateName(s, c)
-}
-
-// stateName is the state while reading an unquoted function name.
-func stateName(s *scanner, c byte) int {
-	if isName(c) {
-		return scanContinue
-	}
-	if c == '(' {
-		s.step = stateParamOrEmpty
-		s.pushParseState(parseParam)
-		return scanParam
-	}
-	return stateEndValue(s, c)
-}
-
-// stateParamOrEmpty is the state after reading `(`.
-func stateParamOrEmpty(s *scanner, c byte) int {
-	if c <= ' ' && isSpace(c) {
-		return scanSkipSpace
-	}
-	if c == ')' {
-		return stateEndValue(s, c)
-	}
-	return stateBeginValue(s, c)
-}
-
-// stateT is the state after reading `t`.
-func stateT(s *scanner, c byte) int {
-	if c == 'r' {
-		s.step = stateTr
-		return scanContinue
-	}
-	return s.error(c, "in literal true (expecting 'r')")
-}
-
-// stateTr is the state after reading `tr`.
-func stateTr(s *scanner, c byte) int {
-	if c == 'u' {
-		s.step = stateTru
-		return scanContinue
-	}
-	return s.error(c, "in literal true (expecting 'u')")
-}
-
-// stateTru is the state after reading `tru`.
-func stateTru(s *scanner, c byte) int {
-	if c == 'e' {
-		s.step = stateEndValue
-		return scanContinue
-	}
-	return s.error(c, "in literal true (expecting 'e')")
-}
-
-// stateF is the state after reading `f`.
-func stateF(s *scanner, c byte) int {
-	if c == 'a' {
-		s.step = stateFa
-		return scanContinue
-	}
-	return s.error(c, "in literal false (expecting 'a')")
-}
-
-// stateFa is the state after reading `fa`.
-func stateFa(s *scanner, c byte) int {
-	if c == 'l' {
-		s.step = stateFal
-		return scanContinue
-	}
-	return s.error(c, "in literal false (expecting 'l')")
-}
-
-// stateFal is the state after reading `fal`.
-func stateFal(s *scanner, c byte) int {
-	if c == 's' {
-		s.step = stateFals
-		return scanContinue
-	}
-	return s.error(c, "in literal false (expecting 's')")
-}
-
-// stateFals is the state after reading `fals`.
-func stateFals(s *scanner, c byte) int {
-	if c == 'e' {
-		s.step = stateEndValue
-		return scanContinue
-	}
-	return s.error(c, "in literal false (expecting 'e')")
-}
-
-// stateN is the state after reading `n`.
-func stateN(s *scanner, c byte) int {
-	if c == 'u' {
-		s.step = stateNu
-		return scanContinue
-	}
-	return s.error(c, "in literal null (expecting 'u')")
-}
-
-// stateNu is the state after reading `nu`.
-func stateNu(s *scanner, c byte) int {
-	if c == 'l' {
-		s.step = stateNul
-		return scanContinue
-	}
-	return s.error(c, "in literal null (expecting 'l')")
-}
-
-// stateNul is the state after reading `nul`.
-func stateNul(s *scanner, c byte) int {
-	if c == 'l' {
-		s.step = stateEndValue
-		return scanContinue
-	}
-	return s.error(c, "in literal null (expecting 'l')")
-}
-
-// stateError is the state after reaching a syntax error,
-// such as after reading `[1}` or `5.1.2`.
-func stateError(s *scanner, c byte) int {
-	return scanError
-}
-
-// error records an error and switches to the error state.
-func (s *scanner) error(c byte, context string) int {
-	s.step = stateError
-	s.err = &SyntaxError{"invalid character " + quoteChar(c) + " " + context, s.bytes}
-	return scanError
-}
-
-// quoteChar formats c as a quoted character literal
-func quoteChar(c byte) string {
-	// special cases - different from quoted strings
-	if c == '\'' {
-		return `'\''`
-	}
-	if c == '"' {
-		return `'"'`
-	}
-
-	// use quoted string with different quotation marks
-	s := strconv.Quote(string(c))
-	return "'" + s[1:len(s)-1] + "'"
-}
-
-// undo causes the scanner to return scanCode from the next state transition.
-// This gives callers a simple 1-byte undo mechanism.
-func (s *scanner) undo(scanCode int) {
-	if s.redo {
-		panic("json: invalid use of scanner")
-	}
-	s.redoCode = scanCode
-	s.redoState = s.step
-	s.step = stateRedo
-	s.redo = true
-}
-
-// stateRedo helps implement the scanner's 1-byte undo.
-func stateRedo(s *scanner, c byte) int {
-	s.redo = false
-	s.step = s.redoState
-	return s.redoCode
-}

vendor/gopkg.in.o/mgo.v2/internal/json/scanner_test.go

@@ -1,316 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"bytes"
-	"math"
-	"math/rand"
-	"reflect"
-	"testing"
-)
-
-// Tests of simple examples.
-
-type example struct {
-	compact string
-	indent  string
-}
-
-var examples = []example{
-	{`1`, `1`},
-	{`{}`, `{}`},
-	{`[]`, `[]`},
-	{`{"":2}`, "{\n\t\"\": 2\n}"},
-	{`[3]`, "[\n\t3\n]"},
-	{`[1,2,3]`, "[\n\t1,\n\t2,\n\t3\n]"},
-	{`{"x":1}`, "{\n\t\"x\": 1\n}"},
-	{ex1, ex1i},
-}
-
-var ex1 = `[true,false,null,"x",1,1.5,0,-5e+2]`
-
-var ex1i = `[
-	true,
-	false,
-	null,
-	"x",
-	1,
-	1.5,
-	0,
-	-5e+2
-]`
-
-func TestCompact(t *testing.T) {
-	var buf bytes.Buffer
-	for _, tt := range examples {
-		buf.Reset()
-		if err := Compact(&buf, []byte(tt.compact)); err != nil {
-			t.Errorf("Compact(%#q): %v", tt.compact, err)
-		} else if s := buf.String(); s != tt.compact {
-			t.Errorf("Compact(%#q) = %#q, want original", tt.compact, s)
-		}
-
-		buf.Reset()
-		if err := Compact(&buf, []byte(tt.indent)); err != nil {
-			t.Errorf("Compact(%#q): %v", tt.indent, err)
-			continue
-		} else if s := buf.String(); s != tt.compact {
-			t.Errorf("Compact(%#q) = %#q, want %#q", tt.indent, s, tt.compact)
-		}
-	}
-}
-
-func TestCompactSeparators(t *testing.T) {
-	// U+2028 and U+2029 should be escaped inside strings.
-	// They should not appear outside strings.
-	tests := []struct {
-		in, compact string
-	}{
-		{"{\"\u2028\": 1}", `{"\u2028":1}`},
-		{"{\"\u2029\" :2}", `{"\u2029":2}`},
-	}
-	for _, tt := range tests {
-		var buf bytes.Buffer
-		if err := Compact(&buf, []byte(tt.in)); err != nil {
-			t.Errorf("Compact(%q): %v", tt.in, err)
-		} else if s := buf.String(); s != tt.compact {
-			t.Errorf("Compact(%q) = %q, want %q", tt.in, s, tt.compact)
-		}
-	}
-}
-
-func TestIndent(t *testing.T) {
-	var buf bytes.Buffer
-	for _, tt := range examples {
-		buf.Reset()
-		if err := Indent(&buf, []byte(tt.indent), "", "\t"); err != nil {
-			t.Errorf("Indent(%#q): %v", tt.indent, err)
-		} else if s := buf.String(); s != tt.indent {
-			t.Errorf("Indent(%#q) = %#q, want original", tt.indent, s)
-		}
-
-		buf.Reset()
-		if err := Indent(&buf, []byte(tt.compact), "", "\t"); err != nil {
-			t.Errorf("Indent(%#q): %v", tt.compact, err)
-			continue
-		} else if s := buf.String(); s != tt.indent {
-			t.Errorf("Indent(%#q) = %#q, want %#q", tt.compact, s, tt.indent)
-		}
-	}
-}
-
-// Tests of a large random structure.
-
-func TestCompactBig(t *testing.T) {
-	initBig()
-	var buf bytes.Buffer
-	if err := Compact(&buf, jsonBig); err != nil {
-		t.Fatalf("Compact: %v", err)
-	}
-	b := buf.Bytes()
-	if !bytes.Equal(b, jsonBig) {
-		t.Error("Compact(jsonBig) != jsonBig")
-		diff(t, b, jsonBig)
-		return
-	}
-}
-
-func TestIndentBig(t *testing.T) {
-	initBig()
-	var buf bytes.Buffer
-	if err := Indent(&buf, jsonBig, "", "\t"); err != nil {
-		t.Fatalf("Indent1: %v", err)
-	}
-	b := buf.Bytes()
-	if len(b) == len(jsonBig) {
-		// jsonBig is compact (no unnecessary spaces);
-		// indenting should make it bigger
-		t.Fatalf("Indent(jsonBig) did not get bigger")
-	}
-
-	// should be idempotent
-	var buf1 bytes.Buffer
-	if err := Indent(&buf1, b, "", "\t"); err != nil {
-		t.Fatalf("Indent2: %v", err)
-	}
-	b1 := buf1.Bytes()
-	if !bytes.Equal(b1, b) {
-		t.Error("Indent(Indent(jsonBig)) != Indent(jsonBig)")
-		diff(t, b1, b)
-		return
-	}
-
-	// should get back to original
-	buf1.Reset()
-	if err := Compact(&buf1, b); err != nil {
-		t.Fatalf("Compact: %v", err)
-	}
-	b1 = buf1.Bytes()
-	if !bytes.Equal(b1, jsonBig) {
-		t.Error("Compact(Indent(jsonBig)) != jsonBig")
-		diff(t, b1, jsonBig)
-		return
-	}
-}
-
-type indentErrorTest struct {
-	in  string
-	err error
-}
-
-var indentErrorTests = []indentErrorTest{
-	{`{"X": "foo", "Y"}`, &SyntaxError{"invalid character '}' after object key", 17}},
-	{`{"X": "foo" "Y": "bar"}`, &SyntaxError{"invalid character '\"' after object key:value pair", 13}},
-}
-
-func TestIndentErrors(t *testing.T) {
-	for i, tt := range indentErrorTests {
-		slice := make([]uint8, 0)
-		buf := bytes.NewBuffer(slice)
-		if err := Indent(buf, []uint8(tt.in), "", ""); err != nil {
-			if !reflect.DeepEqual(err, tt.err) {
-				t.Errorf("#%d: Indent: %#v", i, err)
-				continue
-			}
-		}
-	}
-}
-
-func TestNextValueBig(t *testing.T) {
-	initBig()
-	var scan scanner
-	item, rest, err := nextValue(jsonBig, &scan)
-	if err != nil {
-		t.Fatalf("nextValue: %s", err)
-	}
-	if len(item) != len(jsonBig) || &item[0] != &jsonBig[0] {
-		t.Errorf("invalid item: %d %d", len(item), len(jsonBig))
-	}
-	if len(rest) != 0 {
-		t.Errorf("invalid rest: %d", len(rest))
-	}
-
-	item, rest, err = nextValue(append(jsonBig, "HELLO WORLD"...), &scan)
-	if err != nil {
-		t.Fatalf("nextValue extra: %s", err)
-	}
-	if len(item) != len(jsonBig) {
-		t.Errorf("invalid item: %d %d", len(item), len(jsonBig))
-	}
-	if string(rest) != "HELLO WORLD" {
-		t.Errorf("invalid rest: %d", len(rest))
-	}
-}
-
-var benchScan scanner
-
-func BenchmarkSkipValue(b *testing.B) {
-	initBig()
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		nextValue(jsonBig, &benchScan)
-	}
-	b.SetBytes(int64(len(jsonBig)))
-}
-
-func diff(t *testing.T, a, b []byte) {
-	for i := 0; ; i++ {
-		if i >= len(a) || i >= len(b) || a[i] != b[i] {
-			j := i - 10
-			if j < 0 {
-				j = 0
-			}
-			t.Errorf("diverge at %d: «%s» vs «%s»", i, trim(a[j:]), trim(b[j:]))
-			return
-		}
-	}
-}
-
-func trim(b []byte) []byte {
-	if len(b) > 20 {
-		return b[0:20]
-	}
-	return b
-}
-
-// Generate a random JSON object.
-
-var jsonBig []byte
-
-func initBig() {
-	n := 10000
-	if testing.Short() {
-		n = 100
-	}
-	b, err := Marshal(genValue(n))
-	if err != nil {
-		panic(err)
-	}
-	jsonBig = b
-}
-
-func genValue(n int) interface{} {
-	if n > 1 {
-		switch rand.Intn(2) {
-		case 0:
-			return genArray(n)
-		case 1:
-			return genMap(n)
-		}
-	}
-	switch rand.Intn(3) {
-	case 0:
-		return rand.Intn(2) == 0
-	case 1:
-		return rand.NormFloat64()
-	case 2:
-		return genString(30)
-	}
-	panic("unreachable")
-}
-
-func genString(stddev float64) string {
-	n := int(math.Abs(rand.NormFloat64()*stddev + stddev/2))
-	c := make([]rune, n)
-	for i := range c {
-		f := math.Abs(rand.NormFloat64()*64 + 32)
-		if f > 0x10ffff {
-			f = 0x10ffff
-		}
-		c[i] = rune(f)
-	}
-	return string(c)
-}
-
-func genArray(n int) []interface{} {
-	f := int(math.Abs(rand.NormFloat64()) * math.Min(10, float64(n/2)))
-	if f > n {
-		f = n
-	}
-	if f < 1 {
-		f = 1
-	}
-	x := make([]interface{}, f)
-	for i := range x {
-		x[i] = genValue(((i+1)*n)/f - (i*n)/f)
-	}
-	return x
-}
-
-func genMap(n int) map[string]interface{} {
-	f := int(math.Abs(rand.NormFloat64()) * math.Min(10, float64(n/2)))
-	if f > n {
-		f = n
-	}
-	if n > 0 && f == 0 {
-		f = 1
-	}
-	x := make(map[string]interface{})
-	for i := 0; i < f; i++ {
-		x[genString(10)] = genValue(((i+1)*n)/f - (i*n)/f)
-	}
-	return x
-}

vendor/gopkg.in.o/mgo.v2/internal/json/stream.go

@@ -1,510 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"bytes"
-	"errors"
-	"io"
-)
-
-// A Decoder reads and decodes JSON values from an input stream.
-type Decoder struct {
-	r     io.Reader
-	buf   []byte
-	d     decodeState
-	scanp int // start of unread data in buf
-	scan  scanner
-	err   error
-
-	tokenState int
-	tokenStack []int
-}
-
-// NewDecoder returns a new decoder that reads from r.
-//
-// The decoder introduces its own buffering and may
-// read data from r beyond the JSON values requested.
-func NewDecoder(r io.Reader) *Decoder {
-	return &Decoder{r: r}
-}
-
-// UseNumber causes the Decoder to unmarshal a number into an interface{} as a
-// Number instead of as a float64.
-func (dec *Decoder) UseNumber() { dec.d.useNumber = true }
-
-// Decode reads the next JSON-encoded value from its
-// input and stores it in the value pointed to by v.
-//
-// See the documentation for Unmarshal for details about
-// the conversion of JSON into a Go value.
-func (dec *Decoder) Decode(v interface{}) error {
-	if dec.err != nil {
-		return dec.err
-	}
-
-	if err := dec.tokenPrepareForDecode(); err != nil {
-		return err
-	}
-
-	if !dec.tokenValueAllowed() {
-		return &SyntaxError{msg: "not at beginning of value"}
-	}
-
-	// Read whole value into buffer.
-	n, err := dec.readValue()
-	if err != nil {
-		return err
-	}
-	dec.d.init(dec.buf[dec.scanp : dec.scanp+n])
-	dec.scanp += n
-
-	// Don't save err from unmarshal into dec.err:
-	// the connection is still usable since we read a complete JSON
-	// object from it before the error happened.
-	err = dec.d.unmarshal(v)
-
-	// fixup token streaming state
-	dec.tokenValueEnd()
-
-	return err
-}
-
-// Buffered returns a reader of the data remaining in the Decoder's
-// buffer. The reader is valid until the next call to Decode.
-func (dec *Decoder) Buffered() io.Reader {
-	return bytes.NewReader(dec.buf[dec.scanp:])
-}
-
-// readValue reads a JSON value into dec.buf.
-// It returns the length of the encoding.
-func (dec *Decoder) readValue() (int, error) {
-	dec.scan.reset()
-
-	scanp := dec.scanp
-	var err error
-Input:
-	for {
-		// Look in the buffer for a new value.
-		for i, c := range dec.buf[scanp:] {
-			dec.scan.bytes++
-			v := dec.scan.step(&dec.scan, c)
-			if v == scanEnd {
-				scanp += i
-				break Input
-			}
-			// scanEnd is delayed one byte.
-			// We might block trying to get that byte from src,
-			// so instead invent a space byte.
-			if (v == scanEndObject || v == scanEndArray) && dec.scan.step(&dec.scan, ' ') == scanEnd {
-				scanp += i + 1
-				break Input
-			}
-			if v == scanError {
-				dec.err = dec.scan.err
-				return 0, dec.scan.err
-			}
-		}
-		scanp = len(dec.buf)
-
-		// Did the last read have an error?
-		// Delayed until now to allow buffer scan.
-		if err != nil {
-			if err == io.EOF {
-				if dec.scan.step(&dec.scan, ' ') == scanEnd {
-					break Input
-				}
-				if nonSpace(dec.buf) {
-					err = io.ErrUnexpectedEOF
-				}
-			}
-			dec.err = err
-			return 0, err
-		}
-
-		n := scanp - dec.scanp
-		err = dec.refill()
-		scanp = dec.scanp + n
-	}
-	return scanp - dec.scanp, nil
-}
-
-func (dec *Decoder) refill() error {
-	// Make room to read more into the buffer.
-	// First slide down data already consumed.
-	if dec.scanp > 0 {
-		n := copy(dec.buf, dec.buf[dec.scanp:])
-		dec.buf = dec.buf[:n]
-		dec.scanp = 0
-	}
-
-	// Grow buffer if not large enough.
-	const minRead = 512
-	if cap(dec.buf)-len(dec.buf) < minRead {
-		newBuf := make([]byte, len(dec.buf), 2*cap(dec.buf)+minRead)
-		copy(newBuf, dec.buf)
-		dec.buf = newBuf
-	}
-
-	// Read. Delay error for next iteration (after scan).
-	n, err := dec.r.Read(dec.buf[len(dec.buf):cap(dec.buf)])
-	dec.buf = dec.buf[0 : len(dec.buf)+n]
-
-	return err
-}
-
-func nonSpace(b []byte) bool {
-	for _, c := range b {
-		if !isSpace(c) {
-			return true
-		}
-	}
-	return false
-}
-
-// An Encoder writes JSON values to an output stream.
-type Encoder struct {
-	w          io.Writer
-	err        error
-	escapeHTML bool
-
-	indentBuf    *bytes.Buffer
-	indentPrefix string
-	indentValue  string
-
-	ext Extension
-}
-
-// NewEncoder returns a new encoder that writes to w.
-func NewEncoder(w io.Writer) *Encoder {
-	return &Encoder{w: w, escapeHTML: true}
-}
-
-// Encode writes the JSON encoding of v to the stream,
-// followed by a newline character.
-//
-// See the documentation for Marshal for details about the
-// conversion of Go values to JSON.
-func (enc *Encoder) Encode(v interface{}) error {
-	if enc.err != nil {
-		return enc.err
-	}
-	e := newEncodeState()
-	e.ext = enc.ext
-	err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML})
-	if err != nil {
-		return err
-	}
-
-	// Terminate each value with a newline.
-	// This makes the output look a little nicer
-	// when debugging, and some kind of space
-	// is required if the encoded value was a number,
-	// so that the reader knows there aren't more
-	// digits coming.
-	e.WriteByte('\n')
-
-	b := e.Bytes()
-	if enc.indentBuf != nil {
-		enc.indentBuf.Reset()
-		err = Indent(enc.indentBuf, b, enc.indentPrefix, enc.indentValue)
-		if err != nil {
-			return err
-		}
-		b = enc.indentBuf.Bytes()
-	}
-	if _, err = enc.w.Write(b); err != nil {
-		enc.err = err
-	}
-	encodeStatePool.Put(e)
-	return err
-}
-
-// Indent sets the encoder to format each encoded value with Indent.
-func (enc *Encoder) Indent(prefix, indent string) {
-	enc.indentBuf = new(bytes.Buffer)
-	enc.indentPrefix = prefix
-	enc.indentValue = indent
-}
-
-// DisableHTMLEscaping causes the encoder not to escape angle brackets
-// ("<" and ">") or ampersands ("&") in JSON strings.
-func (enc *Encoder) DisableHTMLEscaping() {
-	enc.escapeHTML = false
-}
-
-// RawMessage is a raw encoded JSON value.
-// It implements Marshaler and Unmarshaler and can
-// be used to delay JSON decoding or precompute a JSON encoding.
-type RawMessage []byte
-
-// MarshalJSON returns *m as the JSON encoding of m.
-func (m *RawMessage) MarshalJSON() ([]byte, error) {
-	return *m, nil
-}
-
-// UnmarshalJSON sets *m to a copy of data.
-func (m *RawMessage) UnmarshalJSON(data []byte) error {
-	if m == nil {
-		return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")
-	}
-	*m = append((*m)[0:0], data...)
-	return nil
-}
-
-var _ Marshaler = (*RawMessage)(nil)
-var _ Unmarshaler = (*RawMessage)(nil)
-
-// A Token holds a value of one of these types:
-//
-//	Delim, for the four JSON delimiters [ ] { }
-//	bool, for JSON booleans
-//	float64, for JSON numbers
-//	Number, for JSON numbers
-//	string, for JSON string literals
-//	nil, for JSON null
-//
-type Token interface{}
-
-const (
-	tokenTopValue = iota
-	tokenArrayStart
-	tokenArrayValue
-	tokenArrayComma
-	tokenObjectStart
-	tokenObjectKey
-	tokenObjectColon
-	tokenObjectValue
-	tokenObjectComma
-)
-
-// advance tokenstate from a separator state to a value state
-func (dec *Decoder) tokenPrepareForDecode() error {
-	// Note: Not calling peek before switch, to avoid
-	// putting peek into the standard Decode path.
-	// peek is only called when using the Token API.
-	switch dec.tokenState {
-	case tokenArrayComma:
-		c, err := dec.peek()
-		if err != nil {
-			return err
-		}
-		if c != ',' {
-			return &SyntaxError{"expected comma after array element", 0}
-		}
-		dec.scanp++
-		dec.tokenState = tokenArrayValue
-	case tokenObjectColon:
-		c, err := dec.peek()
-		if err != nil {
-			return err
-		}
-		if c != ':' {
-			return &SyntaxError{"expected colon after object key", 0}
-		}
-		dec.scanp++
-		dec.tokenState = tokenObjectValue
-	}
-	return nil
-}
-
-func (dec *Decoder) tokenValueAllowed() bool {
-	switch dec.tokenState {
-	case tokenTopValue, tokenArrayStart, tokenArrayValue, tokenObjectValue:
-		return true
-	}
-	return false
-}
-
-func (dec *Decoder) tokenValueEnd() {
-	switch dec.tokenState {
-	case tokenArrayStart, tokenArrayValue:
-		dec.tokenState = tokenArrayComma
-	case tokenObjectValue:
-		dec.tokenState = tokenObjectComma
-	}
-}
-
-// A Delim is a JSON array or object delimiter, one of [ ] { or }.
-type Delim rune
-
-func (d Delim) String() string {
-	return string(d)
-}
-
-// Token returns the next JSON token in the input stream.
-// At the end of the input stream, Token returns nil, io.EOF.
-//
-// Token guarantees that the delimiters [ ] { } it returns are
-// properly nested and matched: if Token encounters an unexpected
-// delimiter in the input, it will return an error.
-//
-// The input stream consists of basic JSON values—bool, string,
-// number, and null—along with delimiters [ ] { } of type Delim
-// to mark the start and end of arrays and objects.
-// Commas and colons are elided.
-func (dec *Decoder) Token() (Token, error) {
-	for {
-		c, err := dec.peek()
-		if err != nil {
-			return nil, err
-		}
-		switch c {
-		case '[':
-			if !dec.tokenValueAllowed() {
-				return dec.tokenError(c)
-			}
-			dec.scanp++
-			dec.tokenStack = append(dec.tokenStack, dec.tokenState)
-			dec.tokenState = tokenArrayStart
-			return Delim('['), nil
-
-		case ']':
-			if dec.tokenState != tokenArrayStart && dec.tokenState != tokenArrayComma {
-				return dec.tokenError(c)
-			}
-			dec.scanp++
-			dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
-			dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
-			dec.tokenValueEnd()
-			return Delim(']'), nil
-
-		case '{':
-			if !dec.tokenValueAllowed() {
-				return dec.tokenError(c)
-			}
-			dec.scanp++
-			dec.tokenStack = append(dec.tokenStack, dec.tokenState)
-			dec.tokenState = tokenObjectStart
-			return Delim('{'), nil
-
-		case '}':
-			if dec.tokenState != tokenObjectStart && dec.tokenState != tokenObjectComma {
-				return dec.tokenError(c)
-			}
-			dec.scanp++
-			dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
-			dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
-			dec.tokenValueEnd()
-			return Delim('}'), nil
-
-		case ':':
-			if dec.tokenState != tokenObjectColon {
-				return dec.tokenError(c)
-			}
-			dec.scanp++
-			dec.tokenState = tokenObjectValue
-			continue
-
-		case ',':
-			if dec.tokenState == tokenArrayComma {
-				dec.scanp++
-				dec.tokenState = tokenArrayValue
-				continue
-			}
-			if dec.tokenState == tokenObjectComma {
-				dec.scanp++
-				dec.tokenState = tokenObjectKey
-				continue
-			}
-			return dec.tokenError(c)
-
-		case '"':
-			if dec.tokenState == tokenObjectStart || dec.tokenState == tokenObjectKey {
-				var x string
-				old := dec.tokenState
-				dec.tokenState = tokenTopValue
-				err := dec.Decode(&x)
-				dec.tokenState = old
-				if err != nil {
-					clearOffset(err)
-					return nil, err
-				}
-				dec.tokenState = tokenObjectColon
-				return x, nil
-			}
-			fallthrough
-
-		default:
-			if !dec.tokenValueAllowed() {
-				return dec.tokenError(c)
-			}
-			var x interface{}
-			if err := dec.Decode(&x); err != nil {
-				clearOffset(err)
-				return nil, err
-			}
-			return x, nil
-		}
-	}
-}
-
-func clearOffset(err error) {
-	if s, ok := err.(*SyntaxError); ok {
-		s.Offset = 0
-	}
-}
-
-func (dec *Decoder) tokenError(c byte) (Token, error) {
-	var context string
-	switch dec.tokenState {
-	case tokenTopValue:
-		context = " looking for beginning of value"
-	case tokenArrayStart, tokenArrayValue, tokenObjectValue:
-		context = " looking for beginning of value"
-	case tokenArrayComma:
-		context = " after array element"
-	case tokenObjectKey:
-		context = " looking for beginning of object key string"
-	case tokenObjectColon:
-		context = " after object key"
-	case tokenObjectComma:
-		context = " after object key:value pair"
-	}
-	return nil, &SyntaxError{"invalid character " + quoteChar(c) + " " + context, 0}
-}
-
-// More reports whether there is another element in the
-// current array or object being parsed.
-func (dec *Decoder) More() bool {
-	c, err := dec.peek()
-	return err == nil && c != ']' && c != '}'
-}
-
-func (dec *Decoder) peek() (byte, error) {
-	var err error
-	for {
-		for i := dec.scanp; i < len(dec.buf); i++ {
-			c := dec.buf[i]
-			if isSpace(c) {
-				continue
-			}
-			dec.scanp = i
-			return c, nil
-		}
-		// buffer has been scanned, now report any error
-		if err != nil {
-			return 0, err
-		}
-		err = dec.refill()
-	}
-}
-
-/*
-TODO
-
-// EncodeToken writes the given JSON token to the stream.
-// It returns an error if the delimiters [ ] { } are not properly used.
-//
-// EncodeToken does not call Flush, because usually it is part of
-// a larger operation such as Encode, and those will call Flush when finished.
-// Callers that create an Encoder and then invoke EncodeToken directly,
-// without using Encode, need to call Flush when finished to ensure that
-// the JSON is written to the underlying writer.
-func (e *Encoder) EncodeToken(t Token) error  {
-	...
-}
-
-*/

vendor/gopkg.in.o/mgo.v2/internal/json/stream_test.go

@@ -1,418 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"bytes"
-	"io"
-	"io/ioutil"
-	"log"
-	"net"
-	"net/http"
-	"net/http/httptest"
-	"reflect"
-	"strings"
-	"testing"
-)
-
-// Test values for the stream test.
-// One of each JSON kind.
-var streamTest = []interface{}{
-	0.1,
-	"hello",
-	nil,
-	true,
-	false,
-	[]interface{}{"a", "b", "c"},
-	map[string]interface{}{"K": "Kelvin", "ß": "long s"},
-	3.14, // another value to make sure something can follow map
-}
-
-var streamEncoded = `0.1
-"hello"
-null
-true
-false
-["a","b","c"]
-{"ß":"long s","K":"Kelvin"}
-3.14
-`
-
-func TestEncoder(t *testing.T) {
-	for i := 0; i <= len(streamTest); i++ {
-		var buf bytes.Buffer
-		enc := NewEncoder(&buf)
-		for j, v := range streamTest[0:i] {
-			if err := enc.Encode(v); err != nil {
-				t.Fatalf("encode #%d: %v", j, err)
-			}
-		}
-		if have, want := buf.String(), nlines(streamEncoded, i); have != want {
-			t.Errorf("encoding %d items: mismatch", i)
-			diff(t, []byte(have), []byte(want))
-			break
-		}
-	}
-}
-
-var streamEncodedIndent = `0.1
-"hello"
-null
-true
-false
-[
->."a",
->."b",
->."c"
->]
-{
->."ß": "long s",
->."K": "Kelvin"
->}
-3.14
-`
-
-func TestEncoderIndent(t *testing.T) {
-	var buf bytes.Buffer
-	enc := NewEncoder(&buf)
-	enc.Indent(">", ".")
-	for _, v := range streamTest {
-		enc.Encode(v)
-	}
-	if have, want := buf.String(), streamEncodedIndent; have != want {
-		t.Error("indented encoding mismatch")
-		diff(t, []byte(have), []byte(want))
-	}
-}
-
-func TestEncoderDisableHTMLEscaping(t *testing.T) {
-	var c C
-	var ct CText
-	for _, tt := range []struct {
-		name       string
-		v          interface{}
-		wantEscape string
-		want       string
-	}{
-		{"c", c, `"\u003c\u0026\u003e"`, `"<&>"`},
-		{"ct", ct, `"\"\u003c\u0026\u003e\""`, `"\"<&>\""`},
-		{`"<&>"`, "<&>", `"\u003c\u0026\u003e"`, `"<&>"`},
-	} {
-		var buf bytes.Buffer
-		enc := NewEncoder(&buf)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Fatalf("Encode(%s): %s", tt.name, err)
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.wantEscape {
-			t.Errorf("Encode(%s) = %#q, want %#q", tt.name, got, tt.wantEscape)
-		}
-		buf.Reset()
-		enc.DisableHTMLEscaping()
-		if err := enc.Encode(tt.v); err != nil {
-			t.Fatalf("DisableHTMLEscaping Encode(%s): %s", tt.name, err)
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.want {
-			t.Errorf("DisableHTMLEscaping Encode(%s) = %#q, want %#q",
-				tt.name, got, tt.want)
-		}
-	}
-}
-
-func TestDecoder(t *testing.T) {
-	for i := 0; i <= len(streamTest); i++ {
-		// Use stream without newlines as input,
-		// just to stress the decoder even more.
-		// Our test input does not include back-to-back numbers.
-		// Otherwise stripping the newlines would
-		// merge two adjacent JSON values.
-		var buf bytes.Buffer
-		for _, c := range nlines(streamEncoded, i) {
-			// That's stupid isn't it!? nulltrue!?!? :/
-			//if c != '\n' {
-				buf.WriteRune(c)
-			//}
-		}
-		out := make([]interface{}, i)
-		dec := NewDecoder(&buf)
-		for j := range out {
-			if err := dec.Decode(&out[j]); err != nil {
-				t.Fatalf("decode #%d/%d: %v", j, i, err)
-			}
-		}
-		if !reflect.DeepEqual(out, streamTest[0:i]) {
-			t.Errorf("decoding %d items: mismatch", i)
-			for j := range out {
-				if !reflect.DeepEqual(out[j], streamTest[j]) {
-					t.Errorf("#%d: have %v want %v", j, out[j], streamTest[j])
-				}
-			}
-			break
-		}
-	}
-}
-
-func TestDecoderBuffered(t *testing.T) {
-	r := strings.NewReader(`{"Name": "Gopher"} extra `)
-	var m struct {
-		Name string
-	}
-	d := NewDecoder(r)
-	err := d.Decode(&m)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if m.Name != "Gopher" {
-		t.Errorf("Name = %q; want Gopher", m.Name)
-	}
-	rest, err := ioutil.ReadAll(d.Buffered())
-	if err != nil {
-		t.Fatal(err)
-	}
-	if g, w := string(rest), " extra "; g != w {
-		t.Errorf("Remaining = %q; want %q", g, w)
-	}
-}
-
-func nlines(s string, n int) string {
-	if n <= 0 {
-		return ""
-	}
-	for i, c := range s {
-		if c == '\n' {
-			if n--; n == 0 {
-				return s[0 : i+1]
-			}
-		}
-	}
-	return s
-}
-
-func TestRawMessage(t *testing.T) {
-	// TODO(rsc): Should not need the * in *RawMessage
-	var data struct {
-		X  float64
-		Id *RawMessage
-		Y  float32
-	}
-	const raw = `["\u0056",null]`
-	const msg = `{"X":0.1,"Id":["\u0056",null],"Y":0.2}`
-	err := Unmarshal([]byte(msg), &data)
-	if err != nil {
-		t.Fatalf("Unmarshal: %v", err)
-	}
-	if string([]byte(*data.Id)) != raw {
-		t.Fatalf("Raw mismatch: have %#q want %#q", []byte(*data.Id), raw)
-	}
-	b, err := Marshal(&data)
-	if err != nil {
-		t.Fatalf("Marshal: %v", err)
-	}
-	if string(b) != msg {
-		t.Fatalf("Marshal: have %#q want %#q", b, msg)
-	}
-}
-
-func TestNullRawMessage(t *testing.T) {
-	// TODO(rsc): Should not need the * in *RawMessage
-	var data struct {
-		X  float64
-		Id *RawMessage
-		Y  float32
-	}
-	data.Id = new(RawMessage)
-	const msg = `{"X":0.1,"Id":null,"Y":0.2}`
-	err := Unmarshal([]byte(msg), &data)
-	if err != nil {
-		t.Fatalf("Unmarshal: %v", err)
-	}
-	if data.Id != nil {
-		t.Fatalf("Raw mismatch: have non-nil, want nil")
-	}
-	b, err := Marshal(&data)
-	if err != nil {
-		t.Fatalf("Marshal: %v", err)
-	}
-	if string(b) != msg {
-		t.Fatalf("Marshal: have %#q want %#q", b, msg)
-	}
-}
-
-var blockingTests = []string{
-	`{"x": 1}`,
-	`[1, 2, 3]`,
-}
-
-func TestBlocking(t *testing.T) {
-	for _, enc := range blockingTests {
-		r, w := net.Pipe()
-		go w.Write([]byte(enc))
-		var val interface{}
-
-		// If Decode reads beyond what w.Write writes above,
-		// it will block, and the test will deadlock.
-		if err := NewDecoder(r).Decode(&val); err != nil {
-			t.Errorf("decoding %s: %v", enc, err)
-		}
-		r.Close()
-		w.Close()
-	}
-}
-
-func BenchmarkEncoderEncode(b *testing.B) {
-	b.ReportAllocs()
-	type T struct {
-		X, Y string
-	}
-	v := &T{"foo", "bar"}
-	for i := 0; i < b.N; i++ {
-		if err := NewEncoder(ioutil.Discard).Encode(v); err != nil {
-			b.Fatal(err)
-		}
-	}
-}
-
-type tokenStreamCase struct {
-	json      string
-	expTokens []interface{}
-}
-
-type decodeThis struct {
-	v interface{}
-}
-
-var tokenStreamCases []tokenStreamCase = []tokenStreamCase{
-	// streaming token cases
-	{json: `10`, expTokens: []interface{}{float64(10)}},
-	{json: ` [10] `, expTokens: []interface{}{
-		Delim('['), float64(10), Delim(']')}},
-	{json: ` [false,10,"b"] `, expTokens: []interface{}{
-		Delim('['), false, float64(10), "b", Delim(']')}},
-	{json: `{ "a": 1 }`, expTokens: []interface{}{
-		Delim('{'), "a", float64(1), Delim('}')}},
-	{json: `{"a": 1, "b":"3"}`, expTokens: []interface{}{
-		Delim('{'), "a", float64(1), "b", "3", Delim('}')}},
-	{json: ` [{"a": 1},{"a": 2}] `, expTokens: []interface{}{
-		Delim('['),
-		Delim('{'), "a", float64(1), Delim('}'),
-		Delim('{'), "a", float64(2), Delim('}'),
-		Delim(']')}},
-	{json: `{"obj": {"a": 1}}`, expTokens: []interface{}{
-		Delim('{'), "obj", Delim('{'), "a", float64(1), Delim('}'),
-		Delim('}')}},
-	{json: `{"obj": [{"a": 1}]}`, expTokens: []interface{}{
-		Delim('{'), "obj", Delim('['),
-		Delim('{'), "a", float64(1), Delim('}'),
-		Delim(']'), Delim('}')}},
-
-	// streaming tokens with intermittent Decode()
-	{json: `{ "a": 1 }`, expTokens: []interface{}{
-		Delim('{'), "a",
-		decodeThis{float64(1)},
-		Delim('}')}},
-	{json: ` [ { "a" : 1 } ] `, expTokens: []interface{}{
-		Delim('['),
-		decodeThis{map[string]interface{}{"a": float64(1)}},
-		Delim(']')}},
-	{json: ` [{"a": 1},{"a": 2}] `, expTokens: []interface{}{
-		Delim('['),
-		decodeThis{map[string]interface{}{"a": float64(1)}},
-		decodeThis{map[string]interface{}{"a": float64(2)}},
-		Delim(']')}},
-	{json: `{ "obj" : [ { "a" : 1 } ] }`, expTokens: []interface{}{
-		Delim('{'), "obj", Delim('['),
-		decodeThis{map[string]interface{}{"a": float64(1)}},
-		Delim(']'), Delim('}')}},
-
-	{json: `{"obj": {"a": 1}}`, expTokens: []interface{}{
-		Delim('{'), "obj",
-		decodeThis{map[string]interface{}{"a": float64(1)}},
-		Delim('}')}},
-	{json: `{"obj": [{"a": 1}]}`, expTokens: []interface{}{
-		Delim('{'), "obj",
-		decodeThis{[]interface{}{
-			map[string]interface{}{"a": float64(1)},
-		}},
-		Delim('}')}},
-	{json: ` [{"a": 1} {"a": 2}] `, expTokens: []interface{}{
-		Delim('['),
-		decodeThis{map[string]interface{}{"a": float64(1)}},
-		decodeThis{&SyntaxError{"expected comma after array element", 0}},
-	}},
-	{json: `{ "a" 1 }`, expTokens: []interface{}{
-		Delim('{'), "a",
-		decodeThis{&SyntaxError{"expected colon after object key", 0}},
-	}},
-}
-
-func TestDecodeInStream(t *testing.T) {
-
-	for ci, tcase := range tokenStreamCases {
-
-		dec := NewDecoder(strings.NewReader(tcase.json))
-		for i, etk := range tcase.expTokens {
-
-			var tk interface{}
-			var err error
-
-			if dt, ok := etk.(decodeThis); ok {
-				etk = dt.v
-				err = dec.Decode(&tk)
-			} else {
-				tk, err = dec.Token()
-			}
-			if experr, ok := etk.(error); ok {
-				if err == nil || err.Error() != experr.Error() {
-					t.Errorf("case %v: Expected error %v in %q, but was %v", ci, experr, tcase.json, err)
-				}
-				break
-			} else if err == io.EOF {
-				t.Errorf("case %v: Unexpected EOF in %q", ci, tcase.json)
-				break
-			} else if err != nil {
-				t.Errorf("case %v: Unexpected error '%v' in %q", ci, err, tcase.json)
-				break
-			}
-			if !reflect.DeepEqual(tk, etk) {
-				t.Errorf(`case %v: %q @ %v expected %T(%v) was %T(%v)`, ci, tcase.json, i, etk, etk, tk, tk)
-				break
-			}
-		}
-	}
-
-}
-
-// Test from golang.org/issue/11893
-func TestHTTPDecoding(t *testing.T) {
-	const raw = `{ "foo": "bar" }`
-
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Write([]byte(raw))
-	}))
-	defer ts.Close()
-	res, err := http.Get(ts.URL)
-	if err != nil {
-		log.Fatalf("GET failed: %v", err)
-	}
-	defer res.Body.Close()
-
-	foo := struct {
-		Foo string
-	}{}
-
-	d := NewDecoder(res.Body)
-	err = d.Decode(&foo)
-	if err != nil {
-		t.Fatalf("Decode: %v", err)
-	}
-	if foo.Foo != "bar" {
-		t.Errorf("decoded %q; want \"bar\"", foo.Foo)
-	}
-
-	// make sure we get the EOF the second time
-	err = d.Decode(&foo)
-	if err != io.EOF {
-		t.Errorf("err = %v; want io.EOF", err)
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/json/tagkey_test.go

@@ -1,115 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"testing"
-)
-
-type basicLatin2xTag struct {
-	V string `json:"$%-/"`
-}
-
-type basicLatin3xTag struct {
-	V string `json:"0123456789"`
-}
-
-type basicLatin4xTag struct {
-	V string `json:"ABCDEFGHIJKLMO"`
-}
-
-type basicLatin5xTag struct {
-	V string `json:"PQRSTUVWXYZ_"`
-}
-
-type basicLatin6xTag struct {
-	V string `json:"abcdefghijklmno"`
-}
-
-type basicLatin7xTag struct {
-	V string `json:"pqrstuvwxyz"`
-}
-
-type miscPlaneTag struct {
-	V string `json:"色は匂へど"`
-}
-
-type percentSlashTag struct {
-	V string `json:"text/html%"` // https://golang.org/issue/2718
-}
-
-type punctuationTag struct {
-	V string `json:"!#$%&()*+-./:<=>?@[]^_{|}~"` // https://golang.org/issue/3546
-}
-
-type emptyTag struct {
-	W string
-}
-
-type misnamedTag struct {
-	X string `jsom:"Misnamed"`
-}
-
-type badFormatTag struct {
-	Y string `:"BadFormat"`
-}
-
-type badCodeTag struct {
-	Z string `json:" !\"#&'()*+,."`
-}
-
-type spaceTag struct {
-	Q string `json:"With space"`
-}
-
-type unicodeTag struct {
-	W string `json:"Ελλάδα"`
-}
-
-var structTagObjectKeyTests = []struct {
-	raw   interface{}
-	value string
-	key   string
-}{
-	{basicLatin2xTag{"2x"}, "2x", "$%-/"},
-	{basicLatin3xTag{"3x"}, "3x", "0123456789"},
-	{basicLatin4xTag{"4x"}, "4x", "ABCDEFGHIJKLMO"},
-	{basicLatin5xTag{"5x"}, "5x", "PQRSTUVWXYZ_"},
-	{basicLatin6xTag{"6x"}, "6x", "abcdefghijklmno"},
-	{basicLatin7xTag{"7x"}, "7x", "pqrstuvwxyz"},
-	{miscPlaneTag{"いろはにほへと"}, "いろはにほへと", "色は匂へど"},
-	{emptyTag{"Pour Moi"}, "Pour Moi", "W"},
-	{misnamedTag{"Animal Kingdom"}, "Animal Kingdom", "X"},
-	{badFormatTag{"Orfevre"}, "Orfevre", "Y"},
-	{badCodeTag{"Reliable Man"}, "Reliable Man", "Z"},
-	{percentSlashTag{"brut"}, "brut", "text/html%"},
-	{punctuationTag{"Union Rags"}, "Union Rags", "!#$%&()*+-./:<=>?@[]^_{|}~"},
-	{spaceTag{"Perreddu"}, "Perreddu", "With space"},
-	{unicodeTag{"Loukanikos"}, "Loukanikos", "Ελλάδα"},
-}
-
-func TestStructTagObjectKey(t *testing.T) {
-	for _, tt := range structTagObjectKeyTests {
-		b, err := Marshal(tt.raw)
-		if err != nil {
-			t.Fatalf("Marshal(%#q) failed: %v", tt.raw, err)
-		}
-		var f interface{}
-		err = Unmarshal(b, &f)
-		if err != nil {
-			t.Fatalf("Unmarshal(%#q) failed: %v", b, err)
-		}
-		for i, v := range f.(map[string]interface{}) {
-			switch i {
-			case tt.key:
-				if s, ok := v.(string); !ok || s != tt.value {
-					t.Fatalf("Unexpected value: %#q, want %v", s, tt.value)
-				}
-			default:
-				t.Fatalf("Unexpected key: %#q, from %#q", i, b)
-			}
-		}
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/json/tags.go

@@ -1,44 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"strings"
-)
-
-// tagOptions is the string following a comma in a struct field's "json"
-// tag, or the empty string. It does not include the leading comma.
-type tagOptions string
-
-// parseTag splits a struct field's json tag into its name and
-// comma-separated options.
-func parseTag(tag string) (string, tagOptions) {
-	if idx := strings.Index(tag, ","); idx != -1 {
-		return tag[:idx], tagOptions(tag[idx+1:])
-	}
-	return tag, tagOptions("")
-}
-
-// Contains reports whether a comma-separated list of options
-// contains a particular substr flag. substr must be surrounded by a
-// string boundary or commas.
-func (o tagOptions) Contains(optionName string) bool {
-	if len(o) == 0 {
-		return false
-	}
-	s := string(o)
-	for s != "" {
-		var next string
-		i := strings.Index(s, ",")
-		if i >= 0 {
-			s, next = s[:i], s[i+1:]
-		}
-		if s == optionName {
-			return true
-		}
-		s = next
-	}
-	return false
-}

vendor/gopkg.in.o/mgo.v2/internal/json/tags_test.go

@@ -1,28 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
-	"testing"
-)
-
-func TestTagParsing(t *testing.T) {
-	name, opts := parseTag("field,foobar,foo")
-	if name != "field" {
-		t.Fatalf("name = %q, want field", name)
-	}
-	for _, tt := range []struct {
-		opt  string
-		want bool
-	}{
-		{"foobar", true},
-		{"foo", true},
-		{"bar", false},
-	} {
-		if opts.Contains(tt.opt) != tt.want {
-			t.Errorf("Contains(%q) = %v", tt.opt, !tt.want)
-		}
-	}
-}

vendor/gopkg.in.o/mgo.v2/internal/sasl/sasl.c

@@ -1,77 +0,0 @@
-// +build !windows
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sasl/sasl.h>
-
-static int mgo_sasl_simple(void *context, int id, const char **result, unsigned int *len)
-{
-	if (!result) {
-		return SASL_BADPARAM;
-	}
-	switch (id) {
-	case SASL_CB_USER:
-		*result = (char *)context;
-		break;
-	case SASL_CB_AUTHNAME:
-		*result = (char *)context;
-		break;
-	case SASL_CB_LANGUAGE:
-		*result = NULL;
-		break;
-	default:
-		return SASL_BADPARAM;
-	}
-	if (len) {
-		*len = *result ? strlen(*result) : 0;
-	}
-	return SASL_OK;
-}
-
-typedef int (*callback)(void);
-
-static int mgo_sasl_secret(sasl_conn_t *conn, void *context, int id, sasl_secret_t **result)
-{
-	if (!conn || !result || id != SASL_CB_PASS) {
-		return SASL_BADPARAM;
-	}
-	*result = (sasl_secret_t *)context;
-	return SASL_OK;
-}
-
-sasl_callback_t *mgo_sasl_callbacks(const char *username, const char *password)
-{
-	sasl_callback_t *cb = malloc(4 * sizeof(sasl_callback_t));
-	int n = 0;
-
-	size_t len = strlen(password);
-	sasl_secret_t *secret = (sasl_secret_t*)malloc(sizeof(sasl_secret_t) + len);
-	if (!secret) {
-		free(cb);
-		return NULL;
-	}
-	strcpy((char *)secret->data, password);
-	secret->len = len;
-
-	cb[n].id = SASL_CB_PASS;
-	cb[n].proc = (callback)&mgo_sasl_secret;
-	cb[n].context = secret;
-	n++;
-
-	cb[n].id = SASL_CB_USER;
-	cb[n].proc = (callback)&mgo_sasl_simple;
-	cb[n].context = (char*)username;
-	n++;
-
-	cb[n].id = SASL_CB_AUTHNAME;
-	cb[n].proc = (callback)&mgo_sasl_simple;
-	cb[n].context = (char*)username;
-	n++;
-
-	cb[n].id = SASL_CB_LIST_END;
-	cb[n].proc = NULL;
-	cb[n].context = NULL;
-
-	return cb;
-}

vendor/gopkg.in.o/mgo.v2/internal/sasl/sasl.go

@@ -1,138 +0,0 @@
-// Package sasl is an implementation detail of the mgo package.
-//
-// This package is not meant to be used by itself.
-//
-
-// +build !windows
-
-package sasl
-
-// #cgo LDFLAGS: -lsasl2
-//
-// struct sasl_conn {};
-//
-// #include <stdlib.h>
-// #include <sasl/sasl.h>
-//
-// sasl_callback_t *mgo_sasl_callbacks(const char *username, const char *password);
-//
-import "C"
-
-import (
-	"fmt"
-	"strings"
-	"sync"
-	"unsafe"
-)
-
-type saslStepper interface {
-	Step(serverData []byte) (clientData []byte, done bool, err error)
-	Close()
-}
-
-type saslSession struct {
-	conn *C.sasl_conn_t
-	step int
-	mech string
-
-	cstrings  []*C.char
-	callbacks *C.sasl_callback_t
-}
-
-var initError error
-var initOnce sync.Once
-
-func initSASL() {
-	rc := C.sasl_client_init(nil)
-	if rc != C.SASL_OK {
-		initError = saslError(rc, nil, "cannot initialize SASL library")
-	}
-}
-
-func New(username, password, mechanism, service, host string) (saslStepper, error) {
-	initOnce.Do(initSASL)
-	if initError != nil {
-		return nil, initError
-	}
-
-	ss := &saslSession{mech: mechanism}
-	if service == "" {
-		service = "mongodb"
-	}
-	if i := strings.Index(host, ":"); i >= 0 {
-		host = host[:i]
-	}
-	ss.callbacks = C.mgo_sasl_callbacks(ss.cstr(username), ss.cstr(password))
-	rc := C.sasl_client_new(ss.cstr(service), ss.cstr(host), nil, nil, ss.callbacks, 0, &ss.conn)
-	if rc != C.SASL_OK {
-		ss.Close()
-		return nil, saslError(rc, nil, "cannot create new SASL client")
-	}
-	return ss, nil
-}
-
-func (ss *saslSession) cstr(s string) *C.char {
-	cstr := C.CString(s)
-	ss.cstrings = append(ss.cstrings, cstr)
-	return cstr
-}
-
-func (ss *saslSession) Close() {
-	for _, cstr := range ss.cstrings {
-		C.free(unsafe.Pointer(cstr))
-	}
-	ss.cstrings = nil
-
-	if ss.callbacks != nil {
-		C.free(unsafe.Pointer(ss.callbacks))
-	}
-
-	// The documentation of SASL dispose makes it clear that this should only
-	// be done when the connection is done, not when the authentication phase
-	// is done, because an encryption layer may have been negotiated.
-	// Even then, we'll do this for now, because it's simpler and prevents
-	// keeping track of this state for every socket. If it breaks, we'll fix it.
-	C.sasl_dispose(&ss.conn)
-}
-
-func (ss *saslSession) Step(serverData []byte) (clientData []byte, done bool, err error) {
-	ss.step++
-	if ss.step > 10 {
-		return nil, false, fmt.Errorf("too many SASL steps without authentication")
-	}
-	var cclientData *C.char
-	var cclientDataLen C.uint
-	var rc C.int
-	if ss.step == 1 {
-		var mechanism *C.char // ignored - must match cred
-		rc = C.sasl_client_start(ss.conn, ss.cstr(ss.mech), nil, &cclientData, &cclientDataLen, &mechanism)
-	} else {
-		var cserverData *C.char
-		var cserverDataLen C.uint
-		if len(serverData) > 0 {
-			cserverData = (*C.char)(unsafe.Pointer(&serverData[0]))
-			cserverDataLen = C.uint(len(serverData))
-		}
-		rc = C.sasl_client_step(ss.conn, cserverData, cserverDataLen, nil, &cclientData, &cclientDataLen)
-	}
-	if cclientData != nil && cclientDataLen > 0 {
-		clientData = C.GoBytes(unsafe.Pointer(cclientData), C.int(cclientDataLen))
-	}
-	if rc == C.SASL_OK {
-		return clientData, true, nil
-	}
-	if rc == C.SASL_CONTINUE {
-		return clientData, false, nil
-	}
-	return nil, false, saslError(rc, ss.conn, "cannot establish SASL session")
-}
-
-func saslError(rc C.int, conn *C.sasl_conn_t, msg string) error {
-	var detail string
-	if conn == nil {
-		detail = C.GoString(C.sasl_errstring(rc, nil, nil))
-	} else {
-		detail = C.GoString(C.sasl_errdetail(conn))
-	}
-	return fmt.Errorf(msg + ": " + detail)
-}

vendor/gopkg.in.o/mgo.v2/internal/sasl/sasl_windows.c

@@ -1,122 +0,0 @@
-#include "sasl_windows.h"
-
-static const LPSTR SSPI_PACKAGE_NAME = "kerberos";
-
-SECURITY_STATUS SEC_ENTRY sspi_acquire_credentials_handle(CredHandle *cred_handle, char *username, char *password, char *domain)
-{
-	SEC_WINNT_AUTH_IDENTITY auth_identity;
-	SECURITY_INTEGER ignored;
-
-	auth_identity.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI;
-	auth_identity.User = (LPSTR) username;
-	auth_identity.UserLength = strlen(username);
-	auth_identity.Password = NULL;
-	auth_identity.PasswordLength = 0;
-	if(password){
-		auth_identity.Password = (LPSTR) password;
-		auth_identity.PasswordLength = strlen(password);
-	}
-	auth_identity.Domain = (LPSTR) domain;
-	auth_identity.DomainLength = strlen(domain);
-	return call_sspi_acquire_credentials_handle(NULL, SSPI_PACKAGE_NAME, SECPKG_CRED_OUTBOUND, NULL, &auth_identity, NULL, NULL, cred_handle, &ignored);
-}
-
-int sspi_step(CredHandle *cred_handle, int has_context, CtxtHandle *context, PVOID buffer, ULONG buffer_length, PVOID *out_buffer, ULONG *out_buffer_length,  char *target)
-{
-	SecBufferDesc inbuf;
-	SecBuffer in_bufs[1];
-	SecBufferDesc outbuf;
-	SecBuffer out_bufs[1];
-
-	if (has_context > 0) {
-		// If we already have a context, we now have data to send.
-		// Put this data in an inbuf.
-		inbuf.ulVersion = SECBUFFER_VERSION;
-		inbuf.cBuffers = 1;
-		inbuf.pBuffers = in_bufs;
-		in_bufs[0].pvBuffer = buffer;
-		in_bufs[0].cbBuffer = buffer_length;
-		in_bufs[0].BufferType = SECBUFFER_TOKEN;
-	}
-
-	outbuf.ulVersion = SECBUFFER_VERSION;
-	outbuf.cBuffers = 1;
-	outbuf.pBuffers = out_bufs;
-	out_bufs[0].pvBuffer = NULL;
-	out_bufs[0].cbBuffer = 0;
-	out_bufs[0].BufferType = SECBUFFER_TOKEN;
-
-	ULONG context_attr = 0;
-
-	int ret = call_sspi_initialize_security_context(cred_handle,
-	          has_context > 0 ? context : NULL,
-	          (LPSTR) target,
-	          ISC_REQ_ALLOCATE_MEMORY | ISC_REQ_MUTUAL_AUTH,
-	          0,
-	          SECURITY_NETWORK_DREP,
-	          has_context > 0 ? &inbuf : NULL,
-	          0,
-	          context,
-	          &outbuf,
-	          &context_attr,
-	          NULL);
-
-	*out_buffer = malloc(out_bufs[0].cbBuffer);
-	*out_buffer_length = out_bufs[0].cbBuffer;
-	memcpy(*out_buffer, out_bufs[0].pvBuffer, *out_buffer_length);
-
-	return ret;
-}
-
-int sspi_send_client_authz_id(CtxtHandle *context, PVOID *buffer, ULONG *buffer_length, char *user_plus_realm)
-{
-	SecPkgContext_Sizes sizes;
-	SECURITY_STATUS status = call_sspi_query_context_attributes(context, SECPKG_ATTR_SIZES, &sizes);
-
-	if (status != SEC_E_OK) {
-		return status;
-	}
-
-	size_t user_plus_realm_length = strlen(user_plus_realm);
-	int msgSize = 4 + user_plus_realm_length;
-	char *msg = malloc((sizes.cbSecurityTrailer + msgSize + sizes.cbBlockSize) * sizeof(char));
-	msg[sizes.cbSecurityTrailer + 0] = 1;
-	msg[sizes.cbSecurityTrailer + 1] = 0;
-	msg[sizes.cbSecurityTrailer + 2] = 0;
-	msg[sizes.cbSecurityTrailer + 3] = 0;
-	memcpy(&msg[sizes.cbSecurityTrailer + 4], user_plus_realm, user_plus_realm_length);
-
-	SecBuffer wrapBufs[3];
-	SecBufferDesc wrapBufDesc;
-	wrapBufDesc.cBuffers = 3;
-	wrapBufDesc.pBuffers = wrapBufs;
-	wrapBufDesc.ulVersion = SECBUFFER_VERSION;
-
-	wrapBufs[0].cbBuffer = sizes.cbSecurityTrailer;
-	wrapBufs[0].BufferType = SECBUFFER_TOKEN;
-	wrapBufs[0].pvBuffer = msg;
-
-	wrapBufs[1].cbBuffer = msgSize;
-	wrapBufs[1].BufferType = SECBUFFER_DATA;
-	wrapBufs[1].pvBuffer = msg + sizes.cbSecurityTrailer;
-
-	wrapBufs[2].cbBuffer = sizes.cbBlockSize;
-	wrapBufs[2].BufferType = SECBUFFER_PADDING;
-	wrapBufs[2].pvBuffer = msg + sizes.cbSecurityTrailer + msgSize;
-
-	status = call_sspi_encrypt_message(context, SECQOP_WRAP_NO_ENCRYPT, &wrapBufDesc, 0);
-	if (status != SEC_E_OK) {
-		free(msg);
-		return status;
-	}
-
-	*buffer_length = wrapBufs[0].cbBuffer + wrapBufs[1].cbBuffer + wrapBufs[2].cbBuffer;
-	*buffer = malloc(*buffer_length);
-
-	memcpy(*buffer, wrapBufs[0].pvBuffer, wrapBufs[0].cbBuffer);
-	memcpy(*buffer + wrapBufs[0].cbBuffer, wrapBufs[1].pvBuffer, wrapBufs[1].cbBuffer);
-	memcpy(*buffer + wrapBufs[0].cbBuffer + wrapBufs[1].cbBuffer, wrapBufs[2].pvBuffer, wrapBufs[2].cbBuffer);
-
-	free(msg);
-	return SEC_E_OK;
-}

vendor/gopkg.in.o/mgo.v2/internal/sasl/sasl_windows.go

@@ -1,142 +0,0 @@
-package sasl
-
-// #include "sasl_windows.h"
-import "C"
-
-import (
-	"fmt"
-	"strings"
-	"sync"
-	"unsafe"
-)
-
-type saslStepper interface {
-	Step(serverData []byte) (clientData []byte, done bool, err error)
-	Close()
-}
-
-type saslSession struct {
-	// Credentials
-	mech          string
-	service       string
-	host          string
-	userPlusRealm string
-	target        string
-	domain        string
-
-	// Internal state
-	authComplete bool
-	errored      bool
-	step         int
-
-	// C internal state
-	credHandle C.CredHandle
-	context    C.CtxtHandle
-	hasContext C.int
-
-	// Keep track of pointers we need to explicitly free
-	stringsToFree []*C.char
-}
-
-var initError error
-var initOnce sync.Once
-
-func initSSPI() {
-	rc := C.load_secur32_dll()
-	if rc != 0 {
-		initError = fmt.Errorf("Error loading libraries: %v", rc)
-	}
-}
-
-func New(username, password, mechanism, service, host string) (saslStepper, error) {
-	initOnce.Do(initSSPI)
-	ss := &saslSession{mech: mechanism, hasContext: 0, userPlusRealm: username}
-	if service == "" {
-		service = "mongodb"
-	}
-	if i := strings.Index(host, ":"); i >= 0 {
-		host = host[:i]
-	}
-	ss.service = service
-	ss.host = host
-
-	usernameComponents := strings.Split(username, "@")
-	if len(usernameComponents) < 2 {
-		return nil, fmt.Errorf("Username '%v' doesn't contain a realm!", username)
-	}
-	user := usernameComponents[0]
-	ss.domain = usernameComponents[1]
-	ss.target = fmt.Sprintf("%s/%s", ss.service, ss.host)
-
-	var status C.SECURITY_STATUS
-	// Step 0: call AcquireCredentialsHandle to get a nice SSPI CredHandle
-	if len(password) > 0 {
-		status = C.sspi_acquire_credentials_handle(&ss.credHandle, ss.cstr(user), ss.cstr(password), ss.cstr(ss.domain))
-	} else {
-		status = C.sspi_acquire_credentials_handle(&ss.credHandle, ss.cstr(user), nil, ss.cstr(ss.domain))
-	}
-	if status != C.SEC_E_OK {
-		ss.errored = true
-		return nil, fmt.Errorf("Couldn't create new SSPI client, error code %v", status)
-	}
-	return ss, nil
-}
-
-func (ss *saslSession) cstr(s string) *C.char {
-	cstr := C.CString(s)
-	ss.stringsToFree = append(ss.stringsToFree, cstr)
-	return cstr
-}
-
-func (ss *saslSession) Close() {
-	for _, cstr := range ss.stringsToFree {
-		C.free(unsafe.Pointer(cstr))
-	}
-}
-
-func (ss *saslSession) Step(serverData []byte) (clientData []byte, done bool, err error) {
-	ss.step++
-	if ss.step > 10 {
-		return nil, false, fmt.Errorf("too many SSPI steps without authentication")
-	}
-	var buffer C.PVOID
-	var bufferLength C.ULONG
-	var outBuffer C.PVOID
-	var outBufferLength C.ULONG
-	if len(serverData) > 0 {
-		buffer = (C.PVOID)(unsafe.Pointer(&serverData[0]))
-		bufferLength = C.ULONG(len(serverData))
-	}
-	var status C.int
-	if ss.authComplete {
-		// Step 3: last bit of magic to use the correct server credentials
-		status = C.sspi_send_client_authz_id(&ss.context, &outBuffer, &outBufferLength, ss.cstr(ss.userPlusRealm))
-	} else {
-		// Step 1 + Step 2: set up security context with the server and TGT
-		status = C.sspi_step(&ss.credHandle, ss.hasContext, &ss.context, buffer, bufferLength, &outBuffer, &outBufferLength, ss.cstr(ss.target))
-	}
-	if outBuffer != C.PVOID(nil) {
-		defer C.free(unsafe.Pointer(outBuffer))
-	}
-	if status != C.SEC_E_OK && status != C.SEC_I_CONTINUE_NEEDED {
-		ss.errored = true
-		return nil, false, ss.handleSSPIErrorCode(status)
-	}
-
-	clientData = C.GoBytes(unsafe.Pointer(outBuffer), C.int(outBufferLength))
-	if status == C.SEC_E_OK {
-		ss.authComplete = true
-		return clientData, true, nil
-	} else {
-		ss.hasContext = 1
-		return clientData, false, nil
-	}
-}
-
-func (ss *saslSession) handleSSPIErrorCode(code C.int) error {
-	switch {
-	case code == C.SEC_E_TARGET_UNKNOWN:
-		return fmt.Errorf("Target %v@%v not found", ss.target, ss.domain)
-	}
-	return fmt.Errorf("Unknown error doing step %v, error code %v", ss.step, code)
-}

vendor/gopkg.in.o/mgo.v2/internal/sasl/sasl_windows.h

@@ -1,7 +0,0 @@
-#include <windows.h>
-
-#include "sspi_windows.h"
-
-SECURITY_STATUS SEC_ENTRY sspi_acquire_credentials_handle(CredHandle* cred_handle, char* username, char* password, char* domain);
-int sspi_step(CredHandle* cred_handle, int has_context, CtxtHandle* context, PVOID buffer, ULONG buffer_length, PVOID* out_buffer, ULONG* out_buffer_length, char* target);
-int sspi_send_client_authz_id(CtxtHandle* context, PVOID* buffer, ULONG* buffer_length, char* user_plus_realm);

vendor/gopkg.in.o/mgo.v2/internal/sasl/sspi_windows.c

@@ -1,96 +0,0 @@
-// Code adapted from the NodeJS kerberos library:
-// 
-//   https://github.com/christkv/kerberos/tree/master/lib/win32/kerberos_sspi.c
-//
-// Under the terms of the Apache License, Version 2.0:
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-#include <stdlib.h>
-
-#include "sspi_windows.h"
-
-static HINSTANCE sspi_secur32_dll = NULL;
-
-int load_secur32_dll()
-{
-	sspi_secur32_dll = LoadLibrary("secur32.dll");
-	if (sspi_secur32_dll == NULL) {
-		return GetLastError();
-	}
-	return 0;
-}
-
-SECURITY_STATUS SEC_ENTRY call_sspi_encrypt_message(PCtxtHandle phContext, unsigned long fQOP, PSecBufferDesc pMessage, unsigned long MessageSeqNo)
-{
-	if (sspi_secur32_dll == NULL) {
-		return -1;
-	}
-	encryptMessage_fn pfn_encryptMessage = (encryptMessage_fn) GetProcAddress(sspi_secur32_dll, "EncryptMessage");
-	if (!pfn_encryptMessage) {
-		return -2;
-	}
-	return (*pfn_encryptMessage)(phContext, fQOP, pMessage, MessageSeqNo);
-}
-
-SECURITY_STATUS SEC_ENTRY call_sspi_acquire_credentials_handle(
-	LPSTR pszPrincipal, LPSTR pszPackage, unsigned long fCredentialUse,
-        void *pvLogonId, void *pAuthData, SEC_GET_KEY_FN pGetKeyFn, void *pvGetKeyArgument,
-        PCredHandle phCredential, PTimeStamp ptsExpiry)
-{
-	if (sspi_secur32_dll == NULL) {
-		return -1;
-	}
-	acquireCredentialsHandle_fn pfn_acquireCredentialsHandle;
-#ifdef _UNICODE
-	pfn_acquireCredentialsHandle = (acquireCredentialsHandle_fn) GetProcAddress(sspi_secur32_dll, "AcquireCredentialsHandleW");
-#else
-	pfn_acquireCredentialsHandle = (acquireCredentialsHandle_fn) GetProcAddress(sspi_secur32_dll, "AcquireCredentialsHandleA");
-#endif
-	if (!pfn_acquireCredentialsHandle) {
-		return -2;
-	}
-	return (*pfn_acquireCredentialsHandle)(
-		pszPrincipal, pszPackage, fCredentialUse, pvLogonId, pAuthData,
-	        pGetKeyFn, pvGetKeyArgument, phCredential, ptsExpiry);
-}
-
-SECURITY_STATUS SEC_ENTRY call_sspi_initialize_security_context(
-	PCredHandle phCredential, PCtxtHandle phContext, LPSTR pszTargetName,
-	unsigned long fContextReq, unsigned long Reserved1, unsigned long TargetDataRep,
-	PSecBufferDesc pInput, unsigned long Reserved2, PCtxtHandle phNewContext,
-	PSecBufferDesc pOutput, unsigned long *pfContextAttr, PTimeStamp ptsExpiry)
-{
-	if (sspi_secur32_dll == NULL) {
-		return -1;
-	}
-	initializeSecurityContext_fn pfn_initializeSecurityContext;
-#ifdef _UNICODE
-	pfn_initializeSecurityContext = (initializeSecurityContext_fn) GetProcAddress(sspi_secur32_dll, "InitializeSecurityContextW");
-#else
-	pfn_initializeSecurityContext = (initializeSecurityContext_fn) GetProcAddress(sspi_secur32_dll, "InitializeSecurityContextA");
-#endif
-	if (!pfn_initializeSecurityContext) {
-		return -2;
-	}
-	return (*pfn_initializeSecurityContext)(
-		phCredential, phContext, pszTargetName, fContextReq, Reserved1, TargetDataRep,
-		pInput, Reserved2, phNewContext, pOutput, pfContextAttr, ptsExpiry);
-}
-
-SECURITY_STATUS SEC_ENTRY call_sspi_query_context_attributes(PCtxtHandle phContext, unsigned long ulAttribute, void *pBuffer)
-{
-	if (sspi_secur32_dll == NULL) {
-		return -1;
-	}
-	queryContextAttributes_fn pfn_queryContextAttributes;
-#ifdef _UNICODE
-	pfn_queryContextAttributes = (queryContextAttributes_fn) GetProcAddress(sspi_secur32_dll, "QueryContextAttributesW");
-#else
-	pfn_queryContextAttributes = (queryContextAttributes_fn) GetProcAddress(sspi_secur32_dll, "QueryContextAttributesA");
-#endif
-	if (!pfn_queryContextAttributes) {
-		return -2;
-	}
-	return (*pfn_queryContextAttributes)(phContext, ulAttribute, pBuffer);
-}

vendor/gopkg.in.o/mgo.v2/internal/sasl/sspi_windows.h

@@ -1,70 +0,0 @@
-// Code adapted from the NodeJS kerberos library:
-// 
-//   https://github.com/christkv/kerberos/tree/master/lib/win32/kerberos_sspi.h
-//
-// Under the terms of the Apache License, Version 2.0:
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-#ifndef SSPI_WINDOWS_H
-#define SSPI_WINDOWS_H
-
-#define SECURITY_WIN32 1
-
-#include <windows.h>
-#include <sspi.h>
-
-int load_secur32_dll();
-
-SECURITY_STATUS SEC_ENTRY call_sspi_encrypt_message(PCtxtHandle phContext, unsigned long fQOP, PSecBufferDesc pMessage, unsigned long MessageSeqNo);
-
-typedef DWORD (WINAPI *encryptMessage_fn)(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo);
-
-SECURITY_STATUS SEC_ENTRY call_sspi_acquire_credentials_handle(
-    LPSTR pszPrincipal,             // Name of principal
-    LPSTR pszPackage,               // Name of package
-    unsigned long fCredentialUse,   // Flags indicating use
-    void *pvLogonId,                // Pointer to logon ID
-    void *pAuthData,                // Package specific data
-    SEC_GET_KEY_FN pGetKeyFn,       // Pointer to GetKey() func
-    void *pvGetKeyArgument,         // Value to pass to GetKey()
-    PCredHandle phCredential,       // (out) Cred Handle
-    PTimeStamp ptsExpiry            // (out) Lifetime (optional)
-);
-
-typedef DWORD (WINAPI *acquireCredentialsHandle_fn)(
-    LPSTR pszPrincipal, LPSTR pszPackage, unsigned long fCredentialUse,
-    void *pvLogonId, void *pAuthData, SEC_GET_KEY_FN pGetKeyFn, void *pvGetKeyArgument,
-    PCredHandle phCredential, PTimeStamp ptsExpiry
-);
-
-SECURITY_STATUS SEC_ENTRY call_sspi_initialize_security_context(
-    PCredHandle phCredential,       // Cred to base context
-    PCtxtHandle phContext,          // Existing context (OPT)
-    LPSTR pszTargetName,            // Name of target
-    unsigned long fContextReq,      // Context Requirements
-    unsigned long Reserved1,        // Reserved, MBZ
-    unsigned long TargetDataRep,    // Data rep of target
-    PSecBufferDesc pInput,          // Input Buffers
-    unsigned long Reserved2,        // Reserved, MBZ
-    PCtxtHandle phNewContext,       // (out) New Context handle
-    PSecBufferDesc pOutput,         // (inout) Output Buffers
-    unsigned long *pfContextAttr,   // (out) Context attrs
-    PTimeStamp ptsExpiry            // (out) Life span (OPT)
-);
-
-typedef DWORD (WINAPI *initializeSecurityContext_fn)(
-    PCredHandle phCredential, PCtxtHandle phContext, LPSTR pszTargetName, unsigned long fContextReq,
-    unsigned long Reserved1, unsigned long TargetDataRep, PSecBufferDesc pInput, unsigned long Reserved2,
-    PCtxtHandle phNewContext, PSecBufferDesc pOutput, unsigned long *pfContextAttr, PTimeStamp ptsExpiry);
-
-SECURITY_STATUS SEC_ENTRY call_sspi_query_context_attributes(
-    PCtxtHandle phContext,          // Context to query
-    unsigned long ulAttribute,      // Attribute to query
-    void *pBuffer                   // Buffer for attributes
-);
-
-typedef DWORD (WINAPI *queryContextAttributes_fn)(
-    PCtxtHandle phContext, unsigned long ulAttribute, void *pBuffer);
-
-#endif // SSPI_WINDOWS_H

vendor/gopkg.in.o/mgo.v2/internal/scram/scram.go

@@ -1,266 +0,0 @@
-// mgo - MongoDB driver for Go
-//
-// Copyright (c) 2014 - Gustavo Niemeyer <gustavo@niemeyer.net>
-//
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Pacakage scram implements a SCRAM-{SHA-1,etc} client per RFC5802.
-//
-// http://tools.ietf.org/html/rfc5802
-//
-package scram
-
-import (
-	"bytes"
-	"crypto/hmac"
-	"crypto/rand"
-	"encoding/base64"
-	"fmt"
-	"hash"
-	"strconv"
-	"strings"
-)
-
-// Client implements a SCRAM-* client (SCRAM-SHA-1, SCRAM-SHA-256, etc).
-//
-// A Client may be used within a SASL conversation with logic resembling:
-//
-//    var in []byte
-//    var client = scram.NewClient(sha1.New, user, pass)
-//    for client.Step(in) {
-//            out := client.Out()
-//            // send out to server
-//            in := serverOut
-//    }
-//    if client.Err() != nil {
-//            // auth failed
-//    }
-//
-type Client struct {
-	newHash func() hash.Hash
-
-	user string
-	pass string
-	step int
-	out  bytes.Buffer
-	err  error
-
-	clientNonce []byte
-	serverNonce []byte
-	saltedPass  []byte
-	authMsg     bytes.Buffer
-}
-
-// NewClient returns a new SCRAM-* client with the provided hash algorithm.
-//
-// For SCRAM-SHA-1, for example, use:
-//
-//    client := scram.NewClient(sha1.New, user, pass)
-//
-func NewClient(newHash func() hash.Hash, user, pass string) *Client {
-	c := &Client{
-		newHash: newHash,
-		user:    user,
-		pass:    pass,
-	}
-	c.out.Grow(256)
-	c.authMsg.Grow(256)
-	return c
-}
-
-// Out returns the data to be sent to the server in the current step.
-func (c *Client) Out() []byte {
-	if c.out.Len() == 0 {
-		return nil
-	}
-	return c.out.Bytes()
-}
-
-// Err returns the error that ocurred, or nil if there were no errors.
-func (c *Client) Err() error {
-	return c.err
-}
-
-// SetNonce sets the client nonce to the provided value.
-// If not set, the nonce is generated automatically out of crypto/rand on the first step.
-func (c *Client) SetNonce(nonce []byte) {
-	c.clientNonce = nonce
-}
-
-var escaper = strings.NewReplacer("=", "=3D", ",", "=2C")
-
-// Step processes the incoming data from the server and makes the
-// next round of data for the server available via Client.Out.
-// Step returns false if there are no errors and more data is
-// still expected.
-func (c *Client) Step(in []byte) bool {
-	c.out.Reset()
-	if c.step > 2 || c.err != nil {
-		return false
-	}
-	c.step++
-	switch c.step {
-	case 1:
-		c.err = c.step1(in)
-	case 2:
-		c.err = c.step2(in)
-	case 3:
-		c.err = c.step3(in)
-	}
-	return c.step > 2 || c.err != nil
-}
-
-func (c *Client) step1(in []byte) error {
-	if len(c.clientNonce) == 0 {
-		const nonceLen = 6
-		buf := make([]byte, nonceLen + b64.EncodedLen(nonceLen))
-		if _, err := rand.Read(buf[:nonceLen]); err != nil {
-			return fmt.Errorf("cannot read random SCRAM-SHA-1 nonce from operating system: %v", err)
-		}
-		c.clientNonce = buf[nonceLen:]
-		b64.Encode(c.clientNonce, buf[:nonceLen])
-	}
-	c.authMsg.WriteString("n=")
-	escaper.WriteString(&c.authMsg, c.user)
-	c.authMsg.WriteString(",r=")
-	c.authMsg.Write(c.clientNonce)
-
-	c.out.WriteString("n,,")
-	c.out.Write(c.authMsg.Bytes())
-	return nil
-}
-
-var b64 = base64.StdEncoding
-
-func (c *Client) step2(in []byte) error {
-	c.authMsg.WriteByte(',')
-	c.authMsg.Write(in)
-
-	fields := bytes.Split(in, []byte(","))
-	if len(fields) != 3 {
-		return fmt.Errorf("expected 3 fields in first SCRAM-SHA-1 server message, got %d: %q", len(fields), in)
-	}
-	if !bytes.HasPrefix(fields[0], []byte("r=")) || len(fields[0]) < 2 {
-		return fmt.Errorf("server sent an invalid SCRAM-SHA-1 nonce: %q", fields[0])
-	}
-	if !bytes.HasPrefix(fields[1], []byte("s=")) || len(fields[1]) < 6 {
-		return fmt.Errorf("server sent an invalid SCRAM-SHA-1 salt: %q", fields[1])
-	}
-	if !bytes.HasPrefix(fields[2], []byte("i=")) || len(fields[2]) < 6 {
-		return fmt.Errorf("server sent an invalid SCRAM-SHA-1 iteration count: %q", fields[2])
-	}
-
-	c.serverNonce = fields[0][2:]
-	if !bytes.HasPrefix(c.serverNonce, c.clientNonce) {
-		return fmt.Errorf("server SCRAM-SHA-1 nonce is not prefixed by client nonce: got %q, want %q+\"...\"", c.serverNonce, c.clientNonce)
-	}
-
-	salt := make([]byte, b64.DecodedLen(len(fields[1][2:])))
-	n, err := b64.Decode(salt, fields[1][2:])
-	if err != nil {
-		return fmt.Errorf("cannot decode SCRAM-SHA-1 salt sent by server: %q", fields[1])
-	}
-	salt = salt[:n]
-	iterCount, err := strconv.Atoi(string(fields[2][2:]))
-	if err != nil {
-		return fmt.Errorf("server sent an invalid SCRAM-SHA-1 iteration count: %q", fields[2])
-	}
-	c.saltPassword(salt, iterCount)
-
-	c.authMsg.WriteString(",c=biws,r=")
-	c.authMsg.Write(c.serverNonce)
-
-	c.out.WriteString("c=biws,r=")
-	c.out.Write(c.serverNonce)
-	c.out.WriteString(",p=")
-	c.out.Write(c.clientProof())
-	return nil
-}
-
-func (c *Client) step3(in []byte) error {
-	var isv, ise bool
-	var fields = bytes.Split(in, []byte(","))
-	if len(fields) == 1 {
-		isv = bytes.HasPrefix(fields[0], []byte("v="))
-		ise = bytes.HasPrefix(fields[0], []byte("e="))
-	}
-	if ise {
-		return fmt.Errorf("SCRAM-SHA-1 authentication error: %s", fields[0][2:])
-	} else if !isv {
-		return fmt.Errorf("unsupported SCRAM-SHA-1 final message from server: %q", in)
-	}
-	if !bytes.Equal(c.serverSignature(), fields[0][2:]) {
-		return fmt.Errorf("cannot authenticate SCRAM-SHA-1 server signature: %q", fields[0][2:])
-	}
-	return nil
-}
-
-func (c *Client) saltPassword(salt []byte, iterCount int) {
-	mac := hmac.New(c.newHash, []byte(c.pass))
-	mac.Write(salt)
-	mac.Write([]byte{0, 0, 0, 1})
-	ui := mac.Sum(nil)
-	hi := make([]byte, len(ui))
-	copy(hi, ui)
-	for i := 1; i < iterCount; i++ {
-		mac.Reset()
-		mac.Write(ui)
-		mac.Sum(ui[:0])
-		for j, b := range ui {
-			hi[j] ^= b
-		}
-	}
-	c.saltedPass = hi
-}
-
-func (c *Client) clientProof() []byte {
-	mac := hmac.New(c.newHash, c.saltedPass)
-	mac.Write([]byte("Client Key"))
-	clientKey := mac.Sum(nil)
-	hash := c.newHash()
-	hash.Write(clientKey)
-	storedKey := hash.Sum(nil)
-	mac = hmac.New(c.newHash, storedKey)
-	mac.Write(c.authMsg.Bytes())
-	clientProof := mac.Sum(nil)
-	for i, b := range clientKey {
-		clientProof[i] ^= b
-	}
-	clientProof64 := make([]byte, b64.EncodedLen(len(clientProof)))
-	b64.Encode(clientProof64, clientProof)
-	return clientProof64
-}
-
-func (c *Client) serverSignature() []byte {
-	mac := hmac.New(c.newHash, c.saltedPass)
-	mac.Write([]byte("Server Key"))
-	serverKey := mac.Sum(nil)
-
-	mac = hmac.New(c.newHash, serverKey)
-	mac.Write(c.authMsg.Bytes())
-	serverSignature := mac.Sum(nil)
-
-	encoded := make([]byte, b64.EncodedLen(len(serverSignature)))
-	b64.Encode(encoded, serverSignature)
-	return encoded
-}

vendor/gopkg.in.o/mgo.v2/internal/scram/scram_test.go

@@ -1,67 +0,0 @@
-package scram_test
-
-import (
-	"crypto/sha1"
-	"testing"
-
-	. "gopkg.in/check.v1"
-	"gopkg.in/mgo.v2/internal/scram"
-	"strings"
-)
-
-var _ = Suite(&S{})
-
-func Test(t *testing.T) { TestingT(t) }
-
-type S struct{}
-
-var tests = [][]string{{
-	"U: user pencil",
-	"N: fyko+d2lbbFgONRv9qkxdawL",
-	"C: n,,n=user,r=fyko+d2lbbFgONRv9qkxdawL",
-	"S: r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,s=QSXCR+Q6sek8bf92,i=4096",
-	"C: c=biws,r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,p=v0X8v3Bz2T0CJGbJQyF0X+HI4Ts=",
-	"S: v=rmF9pqV8S7suAoZWja4dJRkFsKQ=",
-}, {
-	"U: root fe8c89e308ec08763df36333cbf5d3a2",
-	"N: OTcxNDk5NjM2MzE5",
-	"C: n,,n=root,r=OTcxNDk5NjM2MzE5",
-	"S: r=OTcxNDk5NjM2MzE581Ra3provgG0iDsMkDiIAlrh4532dDLp,s=XRDkVrFC9JuL7/F4tG0acQ==,i=10000",
-	"C: c=biws,r=OTcxNDk5NjM2MzE581Ra3provgG0iDsMkDiIAlrh4532dDLp,p=6y1jp9R7ETyouTXS9fW9k5UHdBc=",
-	"S: v=LBnd9dUJRxdqZiEq91NKP3z/bHA=",
-}}
-
-func (s *S) TestExamples(c *C) {
-	for _, steps := range tests {
-		if len(steps) < 2 || len(steps[0]) < 3 || !strings.HasPrefix(steps[0], "U: ") {
-			c.Fatalf("Invalid test: %#v", steps)
-		}
-		auth := strings.Fields(steps[0][3:])
-		client := scram.NewClient(sha1.New, auth[0], auth[1])
-		first, done := true, false
-		c.Logf("-----")
-		c.Logf("%s", steps[0])
-		for _, step := range steps[1:] {
-			c.Logf("%s", step)
-			switch step[:3] {
-			case "N: ":
-				client.SetNonce([]byte(step[3:]))
-			case "C: ":
-				if first {
-					first = false
-					done = client.Step(nil)
-				}
-				c.Assert(done, Equals, false)
-				c.Assert(client.Err(), IsNil)
-				c.Assert(string(client.Out()), Equals, step[3:])
-			case "S: ":
-				first = false
-				done = client.Step([]byte(step[3:]))
-			default:
-				panic("invalid test line: " + step)
-			}
-		}
-		c.Assert(done, Equals, true)
-		c.Assert(client.Err(), IsNil)
-	}
-}

vendor/gopkg.in/yaml.v2/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
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+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
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+
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+      transformation or translation of a Source form, including but
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+
+      (d) If the Work includes a "NOTICE" text file as part of its
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+          of the NOTICE file are for informational purposes only and
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+          notices within Derivative Works that You distribute, alongside
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
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+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/gopkg.in/yaml.v2/LICENSE.libyaml

@@ -0,0 +1,31 @@
+The following files were ported to Go from C files of libyaml, and thus
+are still covered by their original copyright and license:
+
+    apic.go
+    emitterc.go
+    parserc.go
+    readerc.go
+    scannerc.go
+    writerc.go
+    yamlh.go
+    yamlprivateh.go
+
+Copyright (c) 2006 Kirill Simonov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/gopkg.in/yaml.v2/README.md

@@ -0,0 +1,133 @@
+# YAML support for the Go language
+
+Introduction
+------------
+
+The yaml package enables Go programs to comfortably encode and decode YAML
+values. It was developed within [Canonical](https://www.canonical.com) as
+part of the [juju](https://juju.ubuntu.com) project, and is based on a
+pure Go port of the well-known [libyaml](http://pyyaml.org/wiki/LibYAML)
+C library to parse and generate YAML data quickly and reliably.
+
+Compatibility
+-------------
+
+The yaml package supports most of YAML 1.1 and 1.2, including support for
+anchors, tags, map merging, etc. Multi-document unmarshalling is not yet
+implemented, and base-60 floats from YAML 1.1 are purposefully not
+supported since they're a poor design and are gone in YAML 1.2.
+
+Installation and usage
+----------------------
+
+The import path for the package is *gopkg.in/yaml.v2*.
+
+To install it, run:
+
+    go get gopkg.in/yaml.v2
+
+API documentation
+-----------------
+
+If opened in a browser, the import path itself leads to the API documentation:
+
+  * [https://gopkg.in/yaml.v2](https://gopkg.in/yaml.v2)
+
+API stability
+-------------
+
+The package API for yaml v2 will remain stable as described in [gopkg.in](https://gopkg.in).
+
+
+License
+-------
+
+The yaml package is licensed under the Apache License 2.0. Please see the LICENSE file for details.
+
+
+Example
+-------
+
+Some more examples can be found in the "examples" folder.
+
+```Go
+package main
+
+import (
+        "fmt"
+        "log"
+
+        "gopkg.in/yaml.v2"
+)
+
+var data = `
+a: Easy!
+b:
+  c: 2
+  d: [3, 4]
+`
+
+type T struct {
+        A string
+        B struct {
+                RenamedC int   `yaml:"c"`
+                D        []int `yaml:",flow"`
+        }
+}
+
+func main() {
+        t := T{}
+    
+        err := yaml.Unmarshal([]byte(data), &t)
+        if err != nil {
+                log.Fatalf("error: %v", err)
+        }
+        fmt.Printf("--- t:\n%v\n\n", t)
+    
+        d, err := yaml.Marshal(&t)
+        if err != nil {
+                log.Fatalf("error: %v", err)
+        }
+        fmt.Printf("--- t dump:\n%s\n\n", string(d))
+    
+        m := make(map[interface{}]interface{})
+    
+        err = yaml.Unmarshal([]byte(data), &m)
+        if err != nil {
+                log.Fatalf("error: %v", err)
+        }
+        fmt.Printf("--- m:\n%v\n\n", m)
+    
+        d, err = yaml.Marshal(&m)
+        if err != nil {
+                log.Fatalf("error: %v", err)
+        }
+        fmt.Printf("--- m dump:\n%s\n\n", string(d))
+}
+```
+
+This example will generate the following output:
+
+```
+--- t:
+{Easy! {2 [3 4]}}
+
+--- t dump:
+a: Easy!
+b:
+  c: 2
+  d: [3, 4]
+
+
+--- m:
+map[a:Easy! b:map[c:2 d:[3 4]]]
+
+--- m dump:
+a: Easy!
+b:
+  c: 2
+  d:
+  - 3
+  - 4
+```
+

vendor/gopkg.in/yaml.v2/apic.go

@@ -0,0 +1,742 @@
+package yaml
+
+import (
+	"io"
+	"os"
+)
+
+func yaml_insert_token(parser *yaml_parser_t, pos int, token *yaml_token_t) {
+	//fmt.Println("yaml_insert_token", "pos:", pos, "typ:", token.typ, "head:", parser.tokens_head, "len:", len(parser.tokens))
+
+	// Check if we can move the queue at the beginning of the buffer.
+	if parser.tokens_head > 0 && len(parser.tokens) == cap(parser.tokens) {
+		if parser.tokens_head != len(parser.tokens) {
+			copy(parser.tokens, parser.tokens[parser.tokens_head:])
+		}
+		parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head]
+		parser.tokens_head = 0
+	}
+	parser.tokens = append(parser.tokens, *token)
+	if pos < 0 {
+		return
+	}
+	copy(parser.tokens[parser.tokens_head+pos+1:], parser.tokens[parser.tokens_head+pos:])
+	parser.tokens[parser.tokens_head+pos] = *token
+}
+
+// Create a new parser object.
+func yaml_parser_initialize(parser *yaml_parser_t) bool {
+	*parser = yaml_parser_t{
+		raw_buffer: make([]byte, 0, input_raw_buffer_size),
+		buffer:     make([]byte, 0, input_buffer_size),
+	}
+	return true
+}
+
+// Destroy a parser object.
+func yaml_parser_delete(parser *yaml_parser_t) {
+	*parser = yaml_parser_t{}
+}
+
+// String read handler.
+func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+	if parser.input_pos == len(parser.input) {
+		return 0, io.EOF
+	}
+	n = copy(buffer, parser.input[parser.input_pos:])
+	parser.input_pos += n
+	return n, nil
+}
+
+// File read handler.
+func yaml_file_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) {
+	return parser.input_file.Read(buffer)
+}
+
+// Set a string input.
+func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) {
+	if parser.read_handler != nil {
+		panic("must set the input source only once")
+	}
+	parser.read_handler = yaml_string_read_handler
+	parser.input = input
+	parser.input_pos = 0
+}
+
+// Set a file input.
+func yaml_parser_set_input_file(parser *yaml_parser_t, file *os.File) {
+	if parser.read_handler != nil {
+		panic("must set the input source only once")
+	}
+	parser.read_handler = yaml_file_read_handler
+	parser.input_file = file
+}
+
+// Set the source encoding.
+func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) {
+	if parser.encoding != yaml_ANY_ENCODING {
+		panic("must set the encoding only once")
+	}
+	parser.encoding = encoding
+}
+
+// Create a new emitter object.
+func yaml_emitter_initialize(emitter *yaml_emitter_t) bool {
+	*emitter = yaml_emitter_t{
+		buffer:     make([]byte, output_buffer_size),
+		raw_buffer: make([]byte, 0, output_raw_buffer_size),
+		states:     make([]yaml_emitter_state_t, 0, initial_stack_size),
+		events:     make([]yaml_event_t, 0, initial_queue_size),
+	}
+	return true
+}
+
+// Destroy an emitter object.
+func yaml_emitter_delete(emitter *yaml_emitter_t) {
+	*emitter = yaml_emitter_t{}
+}
+
+// String write handler.
+func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+	*emitter.output_buffer = append(*emitter.output_buffer, buffer...)
+	return nil
+}
+
+// File write handler.
+func yaml_file_write_handler(emitter *yaml_emitter_t, buffer []byte) error {
+	_, err := emitter.output_file.Write(buffer)
+	return err
+}
+
+// Set a string output.
+func yaml_emitter_set_output_string(emitter *yaml_emitter_t, output_buffer *[]byte) {
+	if emitter.write_handler != nil {
+		panic("must set the output target only once")
+	}
+	emitter.write_handler = yaml_string_write_handler
+	emitter.output_buffer = output_buffer
+}
+
+// Set a file output.
+func yaml_emitter_set_output_file(emitter *yaml_emitter_t, file io.Writer) {
+	if emitter.write_handler != nil {
+		panic("must set the output target only once")
+	}
+	emitter.write_handler = yaml_file_write_handler
+	emitter.output_file = file
+}
+
+// Set the output encoding.
+func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) {
+	if emitter.encoding != yaml_ANY_ENCODING {
+		panic("must set the output encoding only once")
+	}
+	emitter.encoding = encoding
+}
+
+// Set the canonical output style.
+func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) {
+	emitter.canonical = canonical
+}
+
+//// Set the indentation increment.
+func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) {
+	if indent < 2 || indent > 9 {
+		indent = 2
+	}
+	emitter.best_indent = indent
+}
+
+// Set the preferred line width.
+func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) {
+	if width < 0 {
+		width = -1
+	}
+	emitter.best_width = width
+}
+
+// Set if unescaped non-ASCII characters are allowed.
+func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) {
+	emitter.unicode = unicode
+}
+
+// Set the preferred line break character.
+func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) {
+	emitter.line_break = line_break
+}
+
+///*
+// * Destroy a token object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_token_delete(yaml_token_t *token)
+//{
+//    assert(token);  // Non-NULL token object expected.
+//
+//    switch (token.type)
+//    {
+//        case YAML_TAG_DIRECTIVE_TOKEN:
+//            yaml_free(token.data.tag_directive.handle);
+//            yaml_free(token.data.tag_directive.prefix);
+//            break;
+//
+//        case YAML_ALIAS_TOKEN:
+//            yaml_free(token.data.alias.value);
+//            break;
+//
+//        case YAML_ANCHOR_TOKEN:
+//            yaml_free(token.data.anchor.value);
+//            break;
+//
+//        case YAML_TAG_TOKEN:
+//            yaml_free(token.data.tag.handle);
+//            yaml_free(token.data.tag.suffix);
+//            break;
+//
+//        case YAML_SCALAR_TOKEN:
+//            yaml_free(token.data.scalar.value);
+//            break;
+//
+//        default:
+//            break;
+//    }
+//
+//    memset(token, 0, sizeof(yaml_token_t));
+//}
+//
+///*
+// * Check if a string is a valid UTF-8 sequence.
+// *
+// * Check 'reader.c' for more details on UTF-8 encoding.
+// */
+//
+//static int
+//yaml_check_utf8(yaml_char_t *start, size_t length)
+//{
+//    yaml_char_t *end = start+length;
+//    yaml_char_t *pointer = start;
+//
+//    while (pointer < end) {
+//        unsigned char octet;
+//        unsigned int width;
+//        unsigned int value;
+//        size_t k;
+//
+//        octet = pointer[0];
+//        width = (octet & 0x80) == 0x00 ? 1 :
+//                (octet & 0xE0) == 0xC0 ? 2 :
+//                (octet & 0xF0) == 0xE0 ? 3 :
+//                (octet & 0xF8) == 0xF0 ? 4 : 0;
+//        value = (octet & 0x80) == 0x00 ? octet & 0x7F :
+//                (octet & 0xE0) == 0xC0 ? octet & 0x1F :
+//                (octet & 0xF0) == 0xE0 ? octet & 0x0F :
+//                (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0;
+//        if (!width) return 0;
+//        if (pointer+width > end) return 0;
+//        for (k = 1; k < width; k ++) {
+//            octet = pointer[k];
+//            if ((octet & 0xC0) != 0x80) return 0;
+//            value = (value << 6) + (octet & 0x3F);
+//        }
+//        if (!((width == 1) ||
+//            (width == 2 && value >= 0x80) ||
+//            (width == 3 && value >= 0x800) ||
+//            (width == 4 && value >= 0x10000))) return 0;
+//
+//        pointer += width;
+//    }
+//
+//    return 1;
+//}
+//
+
+// Create STREAM-START.
+func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_STREAM_START_EVENT,
+		encoding: encoding,
+	}
+	return true
+}
+
+// Create STREAM-END.
+func yaml_stream_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_STREAM_END_EVENT,
+	}
+	return true
+}
+
+// Create DOCUMENT-START.
+func yaml_document_start_event_initialize(event *yaml_event_t, version_directive *yaml_version_directive_t,
+	tag_directives []yaml_tag_directive_t, implicit bool) bool {
+	*event = yaml_event_t{
+		typ:               yaml_DOCUMENT_START_EVENT,
+		version_directive: version_directive,
+		tag_directives:    tag_directives,
+		implicit:          implicit,
+	}
+	return true
+}
+
+// Create DOCUMENT-END.
+func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) bool {
+	*event = yaml_event_t{
+		typ:      yaml_DOCUMENT_END_EVENT,
+		implicit: implicit,
+	}
+	return true
+}
+
+///*
+// * Create ALIAS.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_alias_event_initialize(event *yaml_event_t, anchor *yaml_char_t)
+//{
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    anchor_copy *yaml_char_t = NULL
+//
+//    assert(event) // Non-NULL event object is expected.
+//    assert(anchor) // Non-NULL anchor is expected.
+//
+//    if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0
+//
+//    anchor_copy = yaml_strdup(anchor)
+//    if (!anchor_copy)
+//        return 0
+//
+//    ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark)
+//
+//    return 1
+//}
+
+// Create SCALAR.
+func yaml_scalar_event_initialize(event *yaml_event_t, anchor, tag, value []byte, plain_implicit, quoted_implicit bool, style yaml_scalar_style_t) bool {
+	*event = yaml_event_t{
+		typ:             yaml_SCALAR_EVENT,
+		anchor:          anchor,
+		tag:             tag,
+		value:           value,
+		implicit:        plain_implicit,
+		quoted_implicit: quoted_implicit,
+		style:           yaml_style_t(style),
+	}
+	return true
+}
+
+// Create SEQUENCE-START.
+func yaml_sequence_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_sequence_style_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_SEQUENCE_START_EVENT,
+		anchor:   anchor,
+		tag:      tag,
+		implicit: implicit,
+		style:    yaml_style_t(style),
+	}
+	return true
+}
+
+// Create SEQUENCE-END.
+func yaml_sequence_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_SEQUENCE_END_EVENT,
+	}
+	return true
+}
+
+// Create MAPPING-START.
+func yaml_mapping_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_mapping_style_t) bool {
+	*event = yaml_event_t{
+		typ:      yaml_MAPPING_START_EVENT,
+		anchor:   anchor,
+		tag:      tag,
+		implicit: implicit,
+		style:    yaml_style_t(style),
+	}
+	return true
+}
+
+// Create MAPPING-END.
+func yaml_mapping_end_event_initialize(event *yaml_event_t) bool {
+	*event = yaml_event_t{
+		typ: yaml_MAPPING_END_EVENT,
+	}
+	return true
+}
+
+// Destroy an event object.
+func yaml_event_delete(event *yaml_event_t) {
+	*event = yaml_event_t{}
+}
+
+///*
+// * Create a document object.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_initialize(document *yaml_document_t,
+//        version_directive *yaml_version_directive_t,
+//        tag_directives_start *yaml_tag_directive_t,
+//        tag_directives_end *yaml_tag_directive_t,
+//        start_implicit int, end_implicit int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    struct {
+//        start *yaml_node_t
+//        end *yaml_node_t
+//        top *yaml_node_t
+//    } nodes = { NULL, NULL, NULL }
+//    version_directive_copy *yaml_version_directive_t = NULL
+//    struct {
+//        start *yaml_tag_directive_t
+//        end *yaml_tag_directive_t
+//        top *yaml_tag_directive_t
+//    } tag_directives_copy = { NULL, NULL, NULL }
+//    value yaml_tag_directive_t = { NULL, NULL }
+//    mark yaml_mark_t = { 0, 0, 0 }
+//
+//    assert(document) // Non-NULL document object is expected.
+//    assert((tag_directives_start && tag_directives_end) ||
+//            (tag_directives_start == tag_directives_end))
+//                            // Valid tag directives are expected.
+//
+//    if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error
+//
+//    if (version_directive) {
+//        version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t))
+//        if (!version_directive_copy) goto error
+//        version_directive_copy.major = version_directive.major
+//        version_directive_copy.minor = version_directive.minor
+//    }
+//
+//    if (tag_directives_start != tag_directives_end) {
+//        tag_directive *yaml_tag_directive_t
+//        if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE))
+//            goto error
+//        for (tag_directive = tag_directives_start
+//                tag_directive != tag_directives_end; tag_directive ++) {
+//            assert(tag_directive.handle)
+//            assert(tag_directive.prefix)
+//            if (!yaml_check_utf8(tag_directive.handle,
+//                        strlen((char *)tag_directive.handle)))
+//                goto error
+//            if (!yaml_check_utf8(tag_directive.prefix,
+//                        strlen((char *)tag_directive.prefix)))
+//                goto error
+//            value.handle = yaml_strdup(tag_directive.handle)
+//            value.prefix = yaml_strdup(tag_directive.prefix)
+//            if (!value.handle || !value.prefix) goto error
+//            if (!PUSH(&context, tag_directives_copy, value))
+//                goto error
+//            value.handle = NULL
+//            value.prefix = NULL
+//        }
+//    }
+//
+//    DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy,
+//            tag_directives_copy.start, tag_directives_copy.top,
+//            start_implicit, end_implicit, mark, mark)
+//
+//    return 1
+//
+//error:
+//    STACK_DEL(&context, nodes)
+//    yaml_free(version_directive_copy)
+//    while (!STACK_EMPTY(&context, tag_directives_copy)) {
+//        value yaml_tag_directive_t = POP(&context, tag_directives_copy)
+//        yaml_free(value.handle)
+//        yaml_free(value.prefix)
+//    }
+//    STACK_DEL(&context, tag_directives_copy)
+//    yaml_free(value.handle)
+//    yaml_free(value.prefix)
+//
+//    return 0
+//}
+//
+///*
+// * Destroy a document object.
+// */
+//
+//YAML_DECLARE(void)
+//yaml_document_delete(document *yaml_document_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    tag_directive *yaml_tag_directive_t
+//
+//    context.error = YAML_NO_ERROR // Eliminate a compliler warning.
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    while (!STACK_EMPTY(&context, document.nodes)) {
+//        node yaml_node_t = POP(&context, document.nodes)
+//        yaml_free(node.tag)
+//        switch (node.type) {
+//            case YAML_SCALAR_NODE:
+//                yaml_free(node.data.scalar.value)
+//                break
+//            case YAML_SEQUENCE_NODE:
+//                STACK_DEL(&context, node.data.sequence.items)
+//                break
+//            case YAML_MAPPING_NODE:
+//                STACK_DEL(&context, node.data.mapping.pairs)
+//                break
+//            default:
+//                assert(0) // Should not happen.
+//        }
+//    }
+//    STACK_DEL(&context, document.nodes)
+//
+//    yaml_free(document.version_directive)
+//    for (tag_directive = document.tag_directives.start
+//            tag_directive != document.tag_directives.end
+//            tag_directive++) {
+//        yaml_free(tag_directive.handle)
+//        yaml_free(tag_directive.prefix)
+//    }
+//    yaml_free(document.tag_directives.start)
+//
+//    memset(document, 0, sizeof(yaml_document_t))
+//}
+//
+///**
+// * Get a document node.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_node(document *yaml_document_t, index int)
+//{
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (index > 0 && document.nodes.start + index <= document.nodes.top) {
+//        return document.nodes.start + index - 1
+//    }
+//    return NULL
+//}
+//
+///**
+// * Get the root object.
+// */
+//
+//YAML_DECLARE(yaml_node_t *)
+//yaml_document_get_root_node(document *yaml_document_t)
+//{
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (document.nodes.top != document.nodes.start) {
+//        return document.nodes.start
+//    }
+//    return NULL
+//}
+//
+///*
+// * Add a scalar node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_scalar(document *yaml_document_t,
+//        tag *yaml_char_t, value *yaml_char_t, length int,
+//        style yaml_scalar_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    value_copy *yaml_char_t = NULL
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//    assert(value) // Non-NULL value is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (length < 0) {
+//        length = strlen((char *)value)
+//    }
+//
+//    if (!yaml_check_utf8(value, length)) goto error
+//    value_copy = yaml_malloc(length+1)
+//    if (!value_copy) goto error
+//    memcpy(value_copy, value, length)
+//    value_copy[length] = '\0'
+//
+//    SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    yaml_free(tag_copy)
+//    yaml_free(value_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Add a sequence node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_sequence(document *yaml_document_t,
+//        tag *yaml_char_t, style yaml_sequence_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    struct {
+//        start *yaml_node_item_t
+//        end *yaml_node_item_t
+//        top *yaml_node_item_t
+//    } items = { NULL, NULL, NULL }
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error
+//
+//    SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end,
+//            style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    STACK_DEL(&context, items)
+//    yaml_free(tag_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Add a mapping node to a document.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_add_mapping(document *yaml_document_t,
+//        tag *yaml_char_t, style yaml_mapping_style_t)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//    mark yaml_mark_t = { 0, 0, 0 }
+//    tag_copy *yaml_char_t = NULL
+//    struct {
+//        start *yaml_node_pair_t
+//        end *yaml_node_pair_t
+//        top *yaml_node_pair_t
+//    } pairs = { NULL, NULL, NULL }
+//    node yaml_node_t
+//
+//    assert(document) // Non-NULL document object is expected.
+//
+//    if (!tag) {
+//        tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG
+//    }
+//
+//    if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error
+//    tag_copy = yaml_strdup(tag)
+//    if (!tag_copy) goto error
+//
+//    if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error
+//
+//    MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end,
+//            style, mark, mark)
+//    if (!PUSH(&context, document.nodes, node)) goto error
+//
+//    return document.nodes.top - document.nodes.start
+//
+//error:
+//    STACK_DEL(&context, pairs)
+//    yaml_free(tag_copy)
+//
+//    return 0
+//}
+//
+///*
+// * Append an item to a sequence node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_sequence_item(document *yaml_document_t,
+//        sequence int, item int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//
+//    assert(document) // Non-NULL document is required.
+//    assert(sequence > 0
+//            && document.nodes.start + sequence <= document.nodes.top)
+//                            // Valid sequence id is required.
+//    assert(document.nodes.start[sequence-1].type == YAML_SEQUENCE_NODE)
+//                            // A sequence node is required.
+//    assert(item > 0 && document.nodes.start + item <= document.nodes.top)
+//                            // Valid item id is required.
+//
+//    if (!PUSH(&context,
+//                document.nodes.start[sequence-1].data.sequence.items, item))
+//        return 0
+//
+//    return 1
+//}
+//
+///*
+// * Append a pair of a key and a value to a mapping node.
+// */
+//
+//YAML_DECLARE(int)
+//yaml_document_append_mapping_pair(document *yaml_document_t,
+//        mapping int, key int, value int)
+//{
+//    struct {
+//        error yaml_error_type_t
+//    } context
+//
+//    pair yaml_node_pair_t
+//
+//    assert(document) // Non-NULL document is required.
+//    assert(mapping > 0
+//            && document.nodes.start + mapping <= document.nodes.top)
+//                            // Valid mapping id is required.
+//    assert(document.nodes.start[mapping-1].type == YAML_MAPPING_NODE)
+//                            // A mapping node is required.
+//    assert(key > 0 && document.nodes.start + key <= document.nodes.top)
+//                            // Valid key id is required.
+//    assert(value > 0 && document.nodes.start + value <= document.nodes.top)
+//                            // Valid value id is required.
+//
+//    pair.key = key
+//    pair.value = value
+//
+//    if (!PUSH(&context,
+//                document.nodes.start[mapping-1].data.mapping.pairs, pair))
+//        return 0
+//
+//    return 1
+//}
+//
+//

vendor/gopkg.in/yaml.v2/decode.go

@@ -0,0 +1,685 @@
+package yaml
+
+import (
+	"encoding"
+	"encoding/base64"
+	"fmt"
+	"math"
+	"reflect"
+	"strconv"
+	"time"
+)
+
+const (
+	documentNode = 1 << iota
+	mappingNode
+	sequenceNode
+	scalarNode
+	aliasNode
+)
+
+type node struct {
+	kind         int
+	line, column int
+	tag          string
+	value        string
+	implicit     bool
+	children     []*node
+	anchors      map[string]*node
+}
+
+// ----------------------------------------------------------------------------
+// Parser, produces a node tree out of a libyaml event stream.
+
+type parser struct {
+	parser yaml_parser_t
+	event  yaml_event_t
+	doc    *node
+}
+
+func newParser(b []byte) *parser {
+	p := parser{}
+	if !yaml_parser_initialize(&p.parser) {
+		panic("failed to initialize YAML emitter")
+	}
+
+	if len(b) == 0 {
+		b = []byte{'\n'}
+	}
+
+	yaml_parser_set_input_string(&p.parser, b)
+
+	p.skip()
+	if p.event.typ != yaml_STREAM_START_EVENT {
+		panic("expected stream start event, got " + strconv.Itoa(int(p.event.typ)))
+	}
+	p.skip()
+	return &p
+}
+
+func (p *parser) destroy() {
+	if p.event.typ != yaml_NO_EVENT {
+		yaml_event_delete(&p.event)
+	}
+	yaml_parser_delete(&p.parser)
+}
+
+func (p *parser) skip() {
+	if p.event.typ != yaml_NO_EVENT {
+		if p.event.typ == yaml_STREAM_END_EVENT {
+			failf("attempted to go past the end of stream; corrupted value?")
+		}
+		yaml_event_delete(&p.event)
+	}
+	if !yaml_parser_parse(&p.parser, &p.event) {
+		p.fail()
+	}
+}
+
+func (p *parser) fail() {
+	var where string
+	var line int
+	if p.parser.problem_mark.line != 0 {
+		line = p.parser.problem_mark.line
+	} else if p.parser.context_mark.line != 0 {
+		line = p.parser.context_mark.line
+	}
+	if line != 0 {
+		where = "line " + strconv.Itoa(line) + ": "
+	}
+	var msg string
+	if len(p.parser.problem) > 0 {
+		msg = p.parser.problem
+	} else {
+		msg = "unknown problem parsing YAML content"
+	}
+	failf("%s%s", where, msg)
+}
+
+func (p *parser) anchor(n *node, anchor []byte) {
+	if anchor != nil {
+		p.doc.anchors[string(anchor)] = n
+	}
+}
+
+func (p *parser) parse() *node {
+	switch p.event.typ {
+	case yaml_SCALAR_EVENT:
+		return p.scalar()
+	case yaml_ALIAS_EVENT:
+		return p.alias()
+	case yaml_MAPPING_START_EVENT:
+		return p.mapping()
+	case yaml_SEQUENCE_START_EVENT:
+		return p.sequence()
+	case yaml_DOCUMENT_START_EVENT:
+		return p.document()
+	case yaml_STREAM_END_EVENT:
+		// Happens when attempting to decode an empty buffer.
+		return nil
+	default:
+		panic("attempted to parse unknown event: " + strconv.Itoa(int(p.event.typ)))
+	}
+}
+
+func (p *parser) node(kind int) *node {
+	return &node{
+		kind:   kind,
+		line:   p.event.start_mark.line,
+		column: p.event.start_mark.column,
+	}
+}
+
+func (p *parser) document() *node {
+	n := p.node(documentNode)
+	n.anchors = make(map[string]*node)
+	p.doc = n
+	p.skip()
+	n.children = append(n.children, p.parse())
+	if p.event.typ != yaml_DOCUMENT_END_EVENT {
+		panic("expected end of document event but got " + strconv.Itoa(int(p.event.typ)))
+	}
+	p.skip()
+	return n
+}
+
+func (p *parser) alias() *node {
+	n := p.node(aliasNode)
+	n.value = string(p.event.anchor)
+	p.skip()
+	return n
+}
+
+func (p *parser) scalar() *node {
+	n := p.node(scalarNode)
+	n.value = string(p.event.value)
+	n.tag = string(p.event.tag)
+	n.implicit = p.event.implicit
+	p.anchor(n, p.event.anchor)
+	p.skip()
+	return n
+}
+
+func (p *parser) sequence() *node {
+	n := p.node(sequenceNode)
+	p.anchor(n, p.event.anchor)
+	p.skip()
+	for p.event.typ != yaml_SEQUENCE_END_EVENT {
+		n.children = append(n.children, p.parse())
+	}
+	p.skip()
+	return n
+}
+
+func (p *parser) mapping() *node {
+	n := p.node(mappingNode)
+	p.anchor(n, p.event.anchor)
+	p.skip()
+	for p.event.typ != yaml_MAPPING_END_EVENT {
+		n.children = append(n.children, p.parse(), p.parse())
+	}
+	p.skip()
+	return n
+}
+
+// ----------------------------------------------------------------------------
+// Decoder, unmarshals a node into a provided value.
+
+type decoder struct {
+	doc     *node
+	aliases map[string]bool
+	mapType reflect.Type
+	terrors []string
+	strict  bool
+}
+
+var (
+	mapItemType    = reflect.TypeOf(MapItem{})
+	durationType   = reflect.TypeOf(time.Duration(0))
+	defaultMapType = reflect.TypeOf(map[interface{}]interface{}{})
+	ifaceType      = defaultMapType.Elem()
+)
+
+func newDecoder(strict bool) *decoder {
+	d := &decoder{mapType: defaultMapType, strict: strict}
+	d.aliases = make(map[string]bool)
+	return d
+}
+
+func (d *decoder) terror(n *node, tag string, out reflect.Value) {
+	if n.tag != "" {
+		tag = n.tag
+	}
+	value := n.value
+	if tag != yaml_SEQ_TAG && tag != yaml_MAP_TAG {
+		if len(value) > 10 {
+			value = " `" + value[:7] + "...`"
+		} else {
+			value = " `" + value + "`"
+		}
+	}
+	d.terrors = append(d.terrors, fmt.Sprintf("line %d: cannot unmarshal %s%s into %s", n.line+1, shortTag(tag), value, out.Type()))
+}
+
+func (d *decoder) callUnmarshaler(n *node, u Unmarshaler) (good bool) {
+	terrlen := len(d.terrors)
+	err := u.UnmarshalYAML(func(v interface{}) (err error) {
+		defer handleErr(&err)
+		d.unmarshal(n, reflect.ValueOf(v))
+		if len(d.terrors) > terrlen {
+			issues := d.terrors[terrlen:]
+			d.terrors = d.terrors[:terrlen]
+			return &TypeError{issues}
+		}
+		return nil
+	})
+	if e, ok := err.(*TypeError); ok {
+		d.terrors = append(d.terrors, e.Errors...)
+		return false
+	}
+	if err != nil {
+		fail(err)
+	}
+	return true
+}
+
+// d.prepare initializes and dereferences pointers and calls UnmarshalYAML
+// if a value is found to implement it.
+// It returns the initialized and dereferenced out value, whether
+// unmarshalling was already done by UnmarshalYAML, and if so whether
+// its types unmarshalled appropriately.
+//
+// If n holds a null value, prepare returns before doing anything.
+func (d *decoder) prepare(n *node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) {
+	if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "" && n.implicit) {
+		return out, false, false
+	}
+	again := true
+	for again {
+		again = false
+		if out.Kind() == reflect.Ptr {
+			if out.IsNil() {
+				out.Set(reflect.New(out.Type().Elem()))
+			}
+			out = out.Elem()
+			again = true
+		}
+		if out.CanAddr() {
+			if u, ok := out.Addr().Interface().(Unmarshaler); ok {
+				good = d.callUnmarshaler(n, u)
+				return out, true, good
+			}
+		}
+	}
+	return out, false, false
+}
+
+func (d *decoder) unmarshal(n *node, out reflect.Value) (good bool) {
+	switch n.kind {
+	case documentNode:
+		return d.document(n, out)
+	case aliasNode:
+		return d.alias(n, out)
+	}
+	out, unmarshaled, good := d.prepare(n, out)
+	if unmarshaled {
+		return good
+	}
+	switch n.kind {
+	case scalarNode:
+		good = d.scalar(n, out)
+	case mappingNode:
+		good = d.mapping(n, out)
+	case sequenceNode:
+		good = d.sequence(n, out)
+	default:
+		panic("internal error: unknown node kind: " + strconv.Itoa(n.kind))
+	}
+	return good
+}
+
+func (d *decoder) document(n *node, out reflect.Value) (good bool) {
+	if len(n.children) == 1 {
+		d.doc = n
+		d.unmarshal(n.children[0], out)
+		return true
+	}
+	return false
+}
+
+func (d *decoder) alias(n *node, out reflect.Value) (good bool) {
+	an, ok := d.doc.anchors[n.value]
+	if !ok {
+		failf("unknown anchor '%s' referenced", n.value)
+	}
+	if d.aliases[n.value] {
+		failf("anchor '%s' value contains itself", n.value)
+	}
+	d.aliases[n.value] = true
+	good = d.unmarshal(an, out)
+	delete(d.aliases, n.value)
+	return good
+}
+
+var zeroValue reflect.Value
+
+func resetMap(out reflect.Value) {
+	for _, k := range out.MapKeys() {
+		out.SetMapIndex(k, zeroValue)
+	}
+}
+
+func (d *decoder) scalar(n *node, out reflect.Value) (good bool) {
+	var tag string
+	var resolved interface{}
+	if n.tag == "" && !n.implicit {
+		tag = yaml_STR_TAG
+		resolved = n.value
+	} else {
+		tag, resolved = resolve(n.tag, n.value)
+		if tag == yaml_BINARY_TAG {
+			data, err := base64.StdEncoding.DecodeString(resolved.(string))
+			if err != nil {
+				failf("!!binary value contains invalid base64 data")
+			}
+			resolved = string(data)
+		}
+	}
+	if resolved == nil {
+		if out.Kind() == reflect.Map && !out.CanAddr() {
+			resetMap(out)
+		} else {
+			out.Set(reflect.Zero(out.Type()))
+		}
+		return true
+	}
+	if s, ok := resolved.(string); ok && out.CanAddr() {
+		if u, ok := out.Addr().Interface().(encoding.TextUnmarshaler); ok {
+			err := u.UnmarshalText([]byte(s))
+			if err != nil {
+				fail(err)
+			}
+			return true
+		}
+	}
+	switch out.Kind() {
+	case reflect.String:
+		if tag == yaml_BINARY_TAG {
+			out.SetString(resolved.(string))
+			good = true
+		} else if resolved != nil {
+			out.SetString(n.value)
+			good = true
+		}
+	case reflect.Interface:
+		if resolved == nil {
+			out.Set(reflect.Zero(out.Type()))
+		} else {
+			out.Set(reflect.ValueOf(resolved))
+		}
+		good = true
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		switch resolved := resolved.(type) {
+		case int:
+			if !out.OverflowInt(int64(resolved)) {
+				out.SetInt(int64(resolved))
+				good = true
+			}
+		case int64:
+			if !out.OverflowInt(resolved) {
+				out.SetInt(resolved)
+				good = true
+			}
+		case uint64:
+			if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) {
+				out.SetInt(int64(resolved))
+				good = true
+			}
+		case float64:
+			if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) {
+				out.SetInt(int64(resolved))
+				good = true
+			}
+		case string:
+			if out.Type() == durationType {
+				d, err := time.ParseDuration(resolved)
+				if err == nil {
+					out.SetInt(int64(d))
+					good = true
+				}
+			}
+		}
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		switch resolved := resolved.(type) {
+		case int:
+			if resolved >= 0 && !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		case int64:
+			if resolved >= 0 && !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		case uint64:
+			if !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		case float64:
+			if resolved <= math.MaxUint64 && !out.OverflowUint(uint64(resolved)) {
+				out.SetUint(uint64(resolved))
+				good = true
+			}
+		}
+	case reflect.Bool:
+		switch resolved := resolved.(type) {
+		case bool:
+			out.SetBool(resolved)
+			good = true
+		}
+	case reflect.Float32, reflect.Float64:
+		switch resolved := resolved.(type) {
+		case int:
+			out.SetFloat(float64(resolved))
+			good = true
+		case int64:
+			out.SetFloat(float64(resolved))
+			good = true
+		case uint64:
+			out.SetFloat(float64(resolved))
+			good = true
+		case float64:
+			out.SetFloat(resolved)
+			good = true
+		}
+	case reflect.Ptr:
+		if out.Type().Elem() == reflect.TypeOf(resolved) {
+			// TODO DOes this make sense? When is out a Ptr except when decoding a nil value?
+			elem := reflect.New(out.Type().Elem())
+			elem.Elem().Set(reflect.ValueOf(resolved))
+			out.Set(elem)
+			good = true
+		}
+	}
+	if !good {
+		d.terror(n, tag, out)
+	}
+	return good
+}
+
+func settableValueOf(i interface{}) reflect.Value {
+	v := reflect.ValueOf(i)
+	sv := reflect.New(v.Type()).Elem()
+	sv.Set(v)
+	return sv
+}
+
+func (d *decoder) sequence(n *node, out reflect.Value) (good bool) {
+	l := len(n.children)
+
+	var iface reflect.Value
+	switch out.Kind() {
+	case reflect.Slice:
+		out.Set(reflect.MakeSlice(out.Type(), l, l))
+	case reflect.Interface:
+		// No type hints. Will have to use a generic sequence.
+		iface = out
+		out = settableValueOf(make([]interface{}, l))
+	default:
+		d.terror(n, yaml_SEQ_TAG, out)
+		return false
+	}
+	et := out.Type().Elem()
+
+	j := 0
+	for i := 0; i < l; i++ {
+		e := reflect.New(et).Elem()
+		if ok := d.unmarshal(n.children[i], e); ok {
+			out.Index(j).Set(e)
+			j++
+		}
+	}
+	out.Set(out.Slice(0, j))
+	if iface.IsValid() {
+		iface.Set(out)
+	}
+	return true
+}
+
+func (d *decoder) mapping(n *node, out reflect.Value) (good bool) {
+	switch out.Kind() {
+	case reflect.Struct:
+		return d.mappingStruct(n, out)
+	case reflect.Slice:
+		return d.mappingSlice(n, out)
+	case reflect.Map:
+		// okay
+	case reflect.Interface:
+		if d.mapType.Kind() == reflect.Map {
+			iface := out
+			out = reflect.MakeMap(d.mapType)
+			iface.Set(out)
+		} else {
+			slicev := reflect.New(d.mapType).Elem()
+			if !d.mappingSlice(n, slicev) {
+				return false
+			}
+			out.Set(slicev)
+			return true
+		}
+	default:
+		d.terror(n, yaml_MAP_TAG, out)
+		return false
+	}
+	outt := out.Type()
+	kt := outt.Key()
+	et := outt.Elem()
+
+	mapType := d.mapType
+	if outt.Key() == ifaceType && outt.Elem() == ifaceType {
+		d.mapType = outt
+	}
+
+	if out.IsNil() {
+		out.Set(reflect.MakeMap(outt))
+	}
+	l := len(n.children)
+	for i := 0; i < l; i += 2 {
+		if isMerge(n.children[i]) {
+			d.merge(n.children[i+1], out)
+			continue
+		}
+		k := reflect.New(kt).Elem()
+		if d.unmarshal(n.children[i], k) {
+			kkind := k.Kind()
+			if kkind == reflect.Interface {
+				kkind = k.Elem().Kind()
+			}
+			if kkind == reflect.Map || kkind == reflect.Slice {
+				failf("invalid map key: %#v", k.Interface())
+			}
+			e := reflect.New(et).Elem()
+			if d.unmarshal(n.children[i+1], e) {
+				out.SetMapIndex(k, e)
+			}
+		}
+	}
+	d.mapType = mapType
+	return true
+}
+
+func (d *decoder) mappingSlice(n *node, out reflect.Value) (good bool) {
+	outt := out.Type()
+	if outt.Elem() != mapItemType {
+		d.terror(n, yaml_MAP_TAG, out)
+		return false
+	}
+
+	mapType := d.mapType
+	d.mapType = outt
+
+	var slice []MapItem
+	var l = len(n.children)
+	for i := 0; i < l; i += 2 {
+		if isMerge(n.children[i]) {
+			d.merge(n.children[i+1], out)
+			continue
+		}
+		item := MapItem{}
+		k := reflect.ValueOf(&item.Key).Elem()
+		if d.unmarshal(n.children[i], k) {
+			v := reflect.ValueOf(&item.Value).Elem()
+			if d.unmarshal(n.children[i+1], v) {
+				slice = append(slice, item)
+			}
+		}
+	}
+	out.Set(reflect.ValueOf(slice))
+	d.mapType = mapType
+	return true
+}
+
+func (d *decoder) mappingStruct(n *node, out reflect.Value) (good bool) {
+	sinfo, err := getStructInfo(out.Type())
+	if err != nil {
+		panic(err)
+	}
+	name := settableValueOf("")
+	l := len(n.children)
+
+	var inlineMap reflect.Value
+	var elemType reflect.Type
+	if sinfo.InlineMap != -1 {
+		inlineMap = out.Field(sinfo.InlineMap)
+		inlineMap.Set(reflect.New(inlineMap.Type()).Elem())
+		elemType = inlineMap.Type().Elem()
+	}
+
+	for i := 0; i < l; i += 2 {
+		ni := n.children[i]
+		if isMerge(ni) {
+			d.merge(n.children[i+1], out)
+			continue
+		}
+		if !d.unmarshal(ni, name) {
+			continue
+		}
+		if info, ok := sinfo.FieldsMap[name.String()]; ok {
+			var field reflect.Value
+			if info.Inline == nil {
+				field = out.Field(info.Num)
+			} else {
+				field = out.FieldByIndex(info.Inline)
+			}
+			d.unmarshal(n.children[i+1], field)
+		} else if sinfo.InlineMap != -1 {
+			if inlineMap.IsNil() {
+				inlineMap.Set(reflect.MakeMap(inlineMap.Type()))
+			}
+			value := reflect.New(elemType).Elem()
+			d.unmarshal(n.children[i+1], value)
+			inlineMap.SetMapIndex(name, value)
+		} else if d.strict {
+			d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in struct %s", n.line+1, name.String(), out.Type()))
+		}
+	}
+	return true
+}
+
+func failWantMap() {
+	failf("map merge requires map or sequence of maps as the value")
+}
+
+func (d *decoder) merge(n *node, out reflect.Value) {
+	switch n.kind {
+	case mappingNode:
+		d.unmarshal(n, out)
+	case aliasNode:
+		an, ok := d.doc.anchors[n.value]
+		if ok && an.kind != mappingNode {
+			failWantMap()
+		}
+		d.unmarshal(n, out)
+	case sequenceNode:
+		// Step backwards as earlier nodes take precedence.
+		for i := len(n.children) - 1; i >= 0; i-- {
+			ni := n.children[i]
+			if ni.kind == aliasNode {
+				an, ok := d.doc.anchors[ni.value]
+				if ok && an.kind != mappingNode {
+					failWantMap()
+				}
+			} else if ni.kind != mappingNode {
+				failWantMap()
+			}
+			d.unmarshal(ni, out)
+		}
+	default:
+		failWantMap()
+	}
+}
+
+func isMerge(n *node) bool {
+	return n.kind == scalarNode && n.value == "<<" && (n.implicit == true || n.tag == yaml_MERGE_TAG)
+}

vendor/gopkg.in/yaml.v2/encode.go

@@ -0,0 +1,306 @@
+package yaml
+
+import (
+	"encoding"
+	"fmt"
+	"reflect"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type encoder struct {
+	emitter yaml_emitter_t
+	event   yaml_event_t
+	out     []byte
+	flow    bool
+}
+
+func newEncoder() (e *encoder) {
+	e = &encoder{}
+	e.must(yaml_emitter_initialize(&e.emitter))
+	yaml_emitter_set_output_string(&e.emitter, &e.out)
+	yaml_emitter_set_unicode(&e.emitter, true)
+	e.must(yaml_stream_start_event_initialize(&e.event, yaml_UTF8_ENCODING))
+	e.emit()
+	e.must(yaml_document_start_event_initialize(&e.event, nil, nil, true))
+	e.emit()
+	return e
+}
+
+func (e *encoder) finish() {
+	e.must(yaml_document_end_event_initialize(&e.event, true))
+	e.emit()
+	e.emitter.open_ended = false
+	e.must(yaml_stream_end_event_initialize(&e.event))
+	e.emit()
+}
+
+func (e *encoder) destroy() {
+	yaml_emitter_delete(&e.emitter)
+}
+
+func (e *encoder) emit() {
+	// This will internally delete the e.event value.
+	if !yaml_emitter_emit(&e.emitter, &e.event) && e.event.typ != yaml_DOCUMENT_END_EVENT && e.event.typ != yaml_STREAM_END_EVENT {
+		e.must(false)
+	}
+}
+
+func (e *encoder) must(ok bool) {
+	if !ok {
+		msg := e.emitter.problem
+		if msg == "" {
+			msg = "unknown problem generating YAML content"
+		}
+		failf("%s", msg)
+	}
+}
+
+func (e *encoder) marshal(tag string, in reflect.Value) {
+	if !in.IsValid() {
+		e.nilv()
+		return
+	}
+	iface := in.Interface()
+	if m, ok := iface.(Marshaler); ok {
+		v, err := m.MarshalYAML()
+		if err != nil {
+			fail(err)
+		}
+		if v == nil {
+			e.nilv()
+			return
+		}
+		in = reflect.ValueOf(v)
+	} else if m, ok := iface.(encoding.TextMarshaler); ok {
+		text, err := m.MarshalText()
+		if err != nil {
+			fail(err)
+		}
+		in = reflect.ValueOf(string(text))
+	}
+	switch in.Kind() {
+	case reflect.Interface:
+		if in.IsNil() {
+			e.nilv()
+		} else {
+			e.marshal(tag, in.Elem())
+		}
+	case reflect.Map:
+		e.mapv(tag, in)
+	case reflect.Ptr:
+		if in.IsNil() {
+			e.nilv()
+		} else {
+			e.marshal(tag, in.Elem())
+		}
+	case reflect.Struct:
+		e.structv(tag, in)
+	case reflect.Slice:
+		if in.Type().Elem() == mapItemType {
+			e.itemsv(tag, in)
+		} else {
+			e.slicev(tag, in)
+		}
+	case reflect.String:
+		e.stringv(tag, in)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		if in.Type() == durationType {
+			e.stringv(tag, reflect.ValueOf(iface.(time.Duration).String()))
+		} else {
+			e.intv(tag, in)
+		}
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		e.uintv(tag, in)
+	case reflect.Float32, reflect.Float64:
+		e.floatv(tag, in)
+	case reflect.Bool:
+		e.boolv(tag, in)
+	default:
+		panic("cannot marshal type: " + in.Type().String())
+	}
+}
+
+func (e *encoder) mapv(tag string, in reflect.Value) {
+	e.mappingv(tag, func() {
+		keys := keyList(in.MapKeys())
+		sort.Sort(keys)
+		for _, k := range keys {
+			e.marshal("", k)
+			e.marshal("", in.MapIndex(k))
+		}
+	})
+}
+
+func (e *encoder) itemsv(tag string, in reflect.Value) {
+	e.mappingv(tag, func() {
+		slice := in.Convert(reflect.TypeOf([]MapItem{})).Interface().([]MapItem)
+		for _, item := range slice {
+			e.marshal("", reflect.ValueOf(item.Key))
+			e.marshal("", reflect.ValueOf(item.Value))
+		}
+	})
+}
+
+func (e *encoder) structv(tag string, in reflect.Value) {
+	sinfo, err := getStructInfo(in.Type())
+	if err != nil {
+		panic(err)
+	}
+	e.mappingv(tag, func() {
+		for _, info := range sinfo.FieldsList {
+			var value reflect.Value
+			if info.Inline == nil {
+				value = in.Field(info.Num)
+			} else {
+				value = in.FieldByIndex(info.Inline)
+			}
+			if info.OmitEmpty && isZero(value) {
+				continue
+			}
+			e.marshal("", reflect.ValueOf(info.Key))
+			e.flow = info.Flow
+			e.marshal("", value)
+		}
+		if sinfo.InlineMap >= 0 {
+			m := in.Field(sinfo.InlineMap)
+			if m.Len() > 0 {
+				e.flow = false
+				keys := keyList(m.MapKeys())
+				sort.Sort(keys)
+				for _, k := range keys {
+					if _, found := sinfo.FieldsMap[k.String()]; found {
+						panic(fmt.Sprintf("Can't have key %q in inlined map; conflicts with struct field", k.String()))
+					}
+					e.marshal("", k)
+					e.flow = false
+					e.marshal("", m.MapIndex(k))
+				}
+			}
+		}
+	})
+}
+
+func (e *encoder) mappingv(tag string, f func()) {
+	implicit := tag == ""
+	style := yaml_BLOCK_MAPPING_STYLE
+	if e.flow {
+		e.flow = false
+		style = yaml_FLOW_MAPPING_STYLE
+	}
+	e.must(yaml_mapping_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
+	e.emit()
+	f()
+	e.must(yaml_mapping_end_event_initialize(&e.event))
+	e.emit()
+}
+
+func (e *encoder) slicev(tag string, in reflect.Value) {
+	implicit := tag == ""
+	style := yaml_BLOCK_SEQUENCE_STYLE
+	if e.flow {
+		e.flow = false
+		style = yaml_FLOW_SEQUENCE_STYLE
+	}
+	e.must(yaml_sequence_start_event_initialize(&e.event, nil, []byte(tag), implicit, style))
+	e.emit()
+	n := in.Len()
+	for i := 0; i < n; i++ {
+		e.marshal("", in.Index(i))
+	}
+	e.must(yaml_sequence_end_event_initialize(&e.event))
+	e.emit()
+}
+
+// isBase60 returns whether s is in base 60 notation as defined in YAML 1.1.
+//
+// The base 60 float notation in YAML 1.1 is a terrible idea and is unsupported
+// in YAML 1.2 and by this package, but these should be marshalled quoted for
+// the time being for compatibility with other parsers.
+func isBase60Float(s string) (result bool) {
+	// Fast path.
+	if s == "" {
+		return false
+	}
+	c := s[0]
+	if !(c == '+' || c == '-' || c >= '0' && c <= '9') || strings.IndexByte(s, ':') < 0 {
+		return false
+	}
+	// Do the full match.
+	return base60float.MatchString(s)
+}
+
+// From http://yaml.org/type/float.html, except the regular expression there
+// is bogus. In practice parsers do not enforce the "\.[0-9_]*" suffix.
+var base60float = regexp.MustCompile(`^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+(?:\.[0-9_]*)?$`)
+
+func (e *encoder) stringv(tag string, in reflect.Value) {
+	var style yaml_scalar_style_t
+	s := in.String()
+	rtag, rs := resolve("", s)
+	if rtag == yaml_BINARY_TAG {
+		if tag == "" || tag == yaml_STR_TAG {
+			tag = rtag
+			s = rs.(string)
+		} else if tag == yaml_BINARY_TAG {
+			failf("explicitly tagged !!binary data must be base64-encoded")
+		} else {
+			failf("cannot marshal invalid UTF-8 data as %s", shortTag(tag))
+		}
+	}
+	if tag == "" && (rtag != yaml_STR_TAG || isBase60Float(s)) {
+		style = yaml_DOUBLE_QUOTED_SCALAR_STYLE
+	} else if strings.Contains(s, "\n") {
+		style = yaml_LITERAL_SCALAR_STYLE
+	} else {
+		style = yaml_PLAIN_SCALAR_STYLE
+	}
+	e.emitScalar(s, "", tag, style)
+}
+
+func (e *encoder) boolv(tag string, in reflect.Value) {
+	var s string
+	if in.Bool() {
+		s = "true"
+	} else {
+		s = "false"
+	}
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) intv(tag string, in reflect.Value) {
+	s := strconv.FormatInt(in.Int(), 10)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) uintv(tag string, in reflect.Value) {
+	s := strconv.FormatUint(in.Uint(), 10)
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) floatv(tag string, in reflect.Value) {
+	// FIXME: Handle 64 bits here.
+	s := strconv.FormatFloat(float64(in.Float()), 'g', -1, 32)
+	switch s {
+	case "+Inf":
+		s = ".inf"
+	case "-Inf":
+		s = "-.inf"
+	case "NaN":
+		s = ".nan"
+	}
+	e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) nilv() {
+	e.emitScalar("null", "", "", yaml_PLAIN_SCALAR_STYLE)
+}
+
+func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_t) {
+	implicit := tag == ""
+	e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style))
+	e.emit()
+}

vendor/gopkg.in/yaml.v2/readerc.go

@@ -0,0 +1,394 @@
+package yaml
+
+import (
+	"io"
+)
+
+// Set the reader error and return 0.
+func yaml_parser_set_reader_error(parser *yaml_parser_t, problem string, offset int, value int) bool {
+	parser.error = yaml_READER_ERROR
+	parser.problem = problem
+	parser.problem_offset = offset
+	parser.problem_value = value
+	return false
+}
+
+// Byte order marks.
+const (
+	bom_UTF8    = "\xef\xbb\xbf"
+	bom_UTF16LE = "\xff\xfe"
+	bom_UTF16BE = "\xfe\xff"
+)
+
+// Determine the input stream encoding by checking the BOM symbol. If no BOM is
+// found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure.
+func yaml_parser_determine_encoding(parser *yaml_parser_t) bool {
+	// Ensure that we had enough bytes in the raw buffer.
+	for !parser.eof && len(parser.raw_buffer)-parser.raw_buffer_pos < 3 {
+		if !yaml_parser_update_raw_buffer(parser) {
+			return false
+		}
+	}
+
+	// Determine the encoding.
+	buf := parser.raw_buffer
+	pos := parser.raw_buffer_pos
+	avail := len(buf) - pos
+	if avail >= 2 && buf[pos] == bom_UTF16LE[0] && buf[pos+1] == bom_UTF16LE[1] {
+		parser.encoding = yaml_UTF16LE_ENCODING
+		parser.raw_buffer_pos += 2
+		parser.offset += 2
+	} else if avail >= 2 && buf[pos] == bom_UTF16BE[0] && buf[pos+1] == bom_UTF16BE[1] {
+		parser.encoding = yaml_UTF16BE_ENCODING
+		parser.raw_buffer_pos += 2
+		parser.offset += 2
+	} else if avail >= 3 && buf[pos] == bom_UTF8[0] && buf[pos+1] == bom_UTF8[1] && buf[pos+2] == bom_UTF8[2] {
+		parser.encoding = yaml_UTF8_ENCODING
+		parser.raw_buffer_pos += 3
+		parser.offset += 3
+	} else {
+		parser.encoding = yaml_UTF8_ENCODING
+	}
+	return true
+}
+
+// Update the raw buffer.
+func yaml_parser_update_raw_buffer(parser *yaml_parser_t) bool {
+	size_read := 0
+
+	// Return if the raw buffer is full.
+	if parser.raw_buffer_pos == 0 && len(parser.raw_buffer) == cap(parser.raw_buffer) {
+		return true
+	}
+
+	// Return on EOF.
+	if parser.eof {
+		return true
+	}
+
+	// Move the remaining bytes in the raw buffer to the beginning.
+	if parser.raw_buffer_pos > 0 && parser.raw_buffer_pos < len(parser.raw_buffer) {
+		copy(parser.raw_buffer, parser.raw_buffer[parser.raw_buffer_pos:])
+	}
+	parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)-parser.raw_buffer_pos]
+	parser.raw_buffer_pos = 0
+
+	// Call the read handler to fill the buffer.
+	size_read, err := parser.read_handler(parser, parser.raw_buffer[len(parser.raw_buffer):cap(parser.raw_buffer)])
+	parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)+size_read]
+	if err == io.EOF {
+		parser.eof = true
+	} else if err != nil {
+		return yaml_parser_set_reader_error(parser, "input error: "+err.Error(), parser.offset, -1)
+	}
+	return true
+}
+
+// Ensure that the buffer contains at least `length` characters.
+// Return true on success, false on failure.
+//
+// The length is supposed to be significantly less that the buffer size.
+func yaml_parser_update_buffer(parser *yaml_parser_t, length int) bool {
+	if parser.read_handler == nil {
+		panic("read handler must be set")
+	}
+
+	// If the EOF flag is set and the raw buffer is empty, do nothing.
+	if parser.eof && parser.raw_buffer_pos == len(parser.raw_buffer) {
+		return true
+	}
+
+	// Return if the buffer contains enough characters.
+	if parser.unread >= length {
+		return true
+	}
+
+	// Determine the input encoding if it is not known yet.
+	if parser.encoding == yaml_ANY_ENCODING {
+		if !yaml_parser_determine_encoding(parser) {
+			return false
+		}
+	}
+
+	// Move the unread characters to the beginning of the buffer.
+	buffer_len := len(parser.buffer)
+	if parser.buffer_pos > 0 && parser.buffer_pos < buffer_len {
+		copy(parser.buffer, parser.buffer[parser.buffer_pos:])
+		buffer_len -= parser.buffer_pos
+		parser.buffer_pos = 0
+	} else if parser.buffer_pos == buffer_len {
+		buffer_len = 0
+		parser.buffer_pos = 0
+	}
+
+	// Open the whole buffer for writing, and cut it before returning.
+	parser.buffer = parser.buffer[:cap(parser.buffer)]
+
+	// Fill the buffer until it has enough characters.
+	first := true
+	for parser.unread < length {
+
+		// Fill the raw buffer if necessary.
+		if !first || parser.raw_buffer_pos == len(parser.raw_buffer) {
+			if !yaml_parser_update_raw_buffer(parser) {
+				parser.buffer = parser.buffer[:buffer_len]
+				return false
+			}
+		}
+		first = false
+
+		// Decode the raw buffer.
+	inner:
+		for parser.raw_buffer_pos != len(parser.raw_buffer) {
+			var value rune
+			var width int
+
+			raw_unread := len(parser.raw_buffer) - parser.raw_buffer_pos
+
+			// Decode the next character.
+			switch parser.encoding {
+			case yaml_UTF8_ENCODING:
+				// Decode a UTF-8 character.  Check RFC 3629
+				// (http://www.ietf.org/rfc/rfc3629.txt) for more details.
+				//
+				// The following table (taken from the RFC) is used for
+				// decoding.
+				//
+				//    Char. number range |        UTF-8 octet sequence
+				//      (hexadecimal)    |              (binary)
+				//   --------------------+------------------------------------
+				//   0000 0000-0000 007F | 0xxxxxxx
+				//   0000 0080-0000 07FF | 110xxxxx 10xxxxxx
+				//   0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
+				//   0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				//
+				// Additionally, the characters in the range 0xD800-0xDFFF
+				// are prohibited as they are reserved for use with UTF-16
+				// surrogate pairs.
+
+				// Determine the length of the UTF-8 sequence.
+				octet := parser.raw_buffer[parser.raw_buffer_pos]
+				switch {
+				case octet&0x80 == 0x00:
+					width = 1
+				case octet&0xE0 == 0xC0:
+					width = 2
+				case octet&0xF0 == 0xE0:
+					width = 3
+				case octet&0xF8 == 0xF0:
+					width = 4
+				default:
+					// The leading octet is invalid.
+					return yaml_parser_set_reader_error(parser,
+						"invalid leading UTF-8 octet",
+						parser.offset, int(octet))
+				}
+
+				// Check if the raw buffer contains an incomplete character.
+				if width > raw_unread {
+					if parser.eof {
+						return yaml_parser_set_reader_error(parser,
+							"incomplete UTF-8 octet sequence",
+							parser.offset, -1)
+					}
+					break inner
+				}
+
+				// Decode the leading octet.
+				switch {
+				case octet&0x80 == 0x00:
+					value = rune(octet & 0x7F)
+				case octet&0xE0 == 0xC0:
+					value = rune(octet & 0x1F)
+				case octet&0xF0 == 0xE0:
+					value = rune(octet & 0x0F)
+				case octet&0xF8 == 0xF0:
+					value = rune(octet & 0x07)
+				default:
+					value = 0
+				}
+
+				// Check and decode the trailing octets.
+				for k := 1; k < width; k++ {
+					octet = parser.raw_buffer[parser.raw_buffer_pos+k]
+
+					// Check if the octet is valid.
+					if (octet & 0xC0) != 0x80 {
+						return yaml_parser_set_reader_error(parser,
+							"invalid trailing UTF-8 octet",
+							parser.offset+k, int(octet))
+					}
+
+					// Decode the octet.
+					value = (value << 6) + rune(octet&0x3F)
+				}
+
+				// Check the length of the sequence against the value.
+				switch {
+				case width == 1:
+				case width == 2 && value >= 0x80:
+				case width == 3 && value >= 0x800:
+				case width == 4 && value >= 0x10000:
+				default:
+					return yaml_parser_set_reader_error(parser,
+						"invalid length of a UTF-8 sequence",
+						parser.offset, -1)
+				}
+
+				// Check the range of the value.
+				if value >= 0xD800 && value <= 0xDFFF || value > 0x10FFFF {
+					return yaml_parser_set_reader_error(parser,
+						"invalid Unicode character",
+						parser.offset, int(value))
+				}
+
+			case yaml_UTF16LE_ENCODING, yaml_UTF16BE_ENCODING:
+				var low, high int
+				if parser.encoding == yaml_UTF16LE_ENCODING {
+					low, high = 0, 1
+				} else {
+					low, high = 1, 0
+				}
+
+				// The UTF-16 encoding is not as simple as one might
+				// naively think.  Check RFC 2781
+				// (http://www.ietf.org/rfc/rfc2781.txt).
+				//
+				// Normally, two subsequent bytes describe a Unicode
+				// character.  However a special technique (called a
+				// surrogate pair) is used for specifying character
+				// values larger than 0xFFFF.
+				//
+				// A surrogate pair consists of two pseudo-characters:
+				//      high surrogate area (0xD800-0xDBFF)
+				//      low surrogate area (0xDC00-0xDFFF)
+				//
+				// The following formulas are used for decoding
+				// and encoding characters using surrogate pairs:
+				//
+				//  U  = U' + 0x10000   (0x01 00 00 <= U <= 0x10 FF FF)
+				//  U' = yyyyyyyyyyxxxxxxxxxx   (0 <= U' <= 0x0F FF FF)
+				//  W1 = 110110yyyyyyyyyy
+				//  W2 = 110111xxxxxxxxxx
+				//
+				// where U is the character value, W1 is the high surrogate
+				// area, W2 is the low surrogate area.
+
+				// Check for incomplete UTF-16 character.
+				if raw_unread < 2 {
+					if parser.eof {
+						return yaml_parser_set_reader_error(parser,
+							"incomplete UTF-16 character",
+							parser.offset, -1)
+					}
+					break inner
+				}
+
+				// Get the character.
+				value = rune(parser.raw_buffer[parser.raw_buffer_pos+low]) +
+					(rune(parser.raw_buffer[parser.raw_buffer_pos+high]) << 8)
+
+				// Check for unexpected low surrogate area.
+				if value&0xFC00 == 0xDC00 {
+					return yaml_parser_set_reader_error(parser,
+						"unexpected low surrogate area",
+						parser.offset, int(value))
+				}
+
+				// Check for a high surrogate area.
+				if value&0xFC00 == 0xD800 {
+					width = 4
+
+					// Check for incomplete surrogate pair.
+					if raw_unread < 4 {
+						if parser.eof {
+							return yaml_parser_set_reader_error(parser,
+								"incomplete UTF-16 surrogate pair",
+								parser.offset, -1)
+						}
+						break inner
+					}
+
+					// Get the next character.
+					value2 := rune(parser.raw_buffer[parser.raw_buffer_pos+low+2]) +
+						(rune(parser.raw_buffer[parser.raw_buffer_pos+high+2]) << 8)
+
+					// Check for a low surrogate area.
+					if value2&0xFC00 != 0xDC00 {
+						return yaml_parser_set_reader_error(parser,
+							"expected low surrogate area",
+							parser.offset+2, int(value2))
+					}
+
+					// Generate the value of the surrogate pair.
+					value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF)
+				} else {
+					width = 2
+				}
+
+			default:
+				panic("impossible")
+			}
+
+			// Check if the character is in the allowed range:
+			//      #x9 | #xA | #xD | [#x20-#x7E]               (8 bit)
+			//      | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD]    (16 bit)
+			//      | [#x10000-#x10FFFF]                        (32 bit)
+			switch {
+			case value == 0x09:
+			case value == 0x0A:
+			case value == 0x0D:
+			case value >= 0x20 && value <= 0x7E:
+			case value == 0x85:
+			case value >= 0xA0 && value <= 0xD7FF:
+			case value >= 0xE000 && value <= 0xFFFD:
+			case value >= 0x10000 && value <= 0x10FFFF:
+			default:
+				return yaml_parser_set_reader_error(parser,
+					"control characters are not allowed",
+					parser.offset, int(value))
+			}
+
+			// Move the raw pointers.
+			parser.raw_buffer_pos += width
+			parser.offset += width
+
+			// Finally put the character into the buffer.
+			if value <= 0x7F {
+				// 0000 0000-0000 007F . 0xxxxxxx
+				parser.buffer[buffer_len+0] = byte(value)
+				buffer_len += 1
+			} else if value <= 0x7FF {
+				// 0000 0080-0000 07FF . 110xxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xC0 + (value >> 6))
+				parser.buffer[buffer_len+1] = byte(0x80 + (value & 0x3F))
+				buffer_len += 2
+			} else if value <= 0xFFFF {
+				// 0000 0800-0000 FFFF . 1110xxxx 10xxxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xE0 + (value >> 12))
+				parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 6) & 0x3F))
+				parser.buffer[buffer_len+2] = byte(0x80 + (value & 0x3F))
+				buffer_len += 3
+			} else {
+				// 0001 0000-0010 FFFF . 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+				parser.buffer[buffer_len+0] = byte(0xF0 + (value >> 18))
+				parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 12) & 0x3F))
+				parser.buffer[buffer_len+2] = byte(0x80 + ((value >> 6) & 0x3F))
+				parser.buffer[buffer_len+3] = byte(0x80 + (value & 0x3F))
+				buffer_len += 4
+			}
+
+			parser.unread++
+		}
+
+		// On EOF, put NUL into the buffer and return.
+		if parser.eof {
+			parser.buffer[buffer_len] = 0
+			buffer_len++
+			parser.unread++
+			break
+		}
+	}
+	parser.buffer = parser.buffer[:buffer_len]
+	return true
+}

vendor/gopkg.in/yaml.v2/resolve.go

@@ -0,0 +1,208 @@
+package yaml
+
+import (
+	"encoding/base64"
+	"math"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+type resolveMapItem struct {
+	value interface{}
+	tag   string
+}
+
+var resolveTable = make([]byte, 256)
+var resolveMap = make(map[string]resolveMapItem)
+
+func init() {
+	t := resolveTable
+	t[int('+')] = 'S' // Sign
+	t[int('-')] = 'S'
+	for _, c := range "0123456789" {
+		t[int(c)] = 'D' // Digit
+	}
+	for _, c := range "yYnNtTfFoO~" {
+		t[int(c)] = 'M' // In map
+	}
+	t[int('.')] = '.' // Float (potentially in map)
+
+	var resolveMapList = []struct {
+		v   interface{}
+		tag string
+		l   []string
+	}{
+		{true, yaml_BOOL_TAG, []string{"y", "Y", "yes", "Yes", "YES"}},
+		{true, yaml_BOOL_TAG, []string{"true", "True", "TRUE"}},
+		{true, yaml_BOOL_TAG, []string{"on", "On", "ON"}},
+		{false, yaml_BOOL_TAG, []string{"n", "N", "no", "No", "NO"}},
+		{false, yaml_BOOL_TAG, []string{"false", "False", "FALSE"}},
+		{false, yaml_BOOL_TAG, []string{"off", "Off", "OFF"}},
+		{nil, yaml_NULL_TAG, []string{"", "~", "null", "Null", "NULL"}},
+		{math.NaN(), yaml_FLOAT_TAG, []string{".nan", ".NaN", ".NAN"}},
+		{math.Inf(+1), yaml_FLOAT_TAG, []string{".inf", ".Inf", ".INF"}},
+		{math.Inf(+1), yaml_FLOAT_TAG, []string{"+.inf", "+.Inf", "+.INF"}},
+		{math.Inf(-1), yaml_FLOAT_TAG, []string{"-.inf", "-.Inf", "-.INF"}},
+		{"<<", yaml_MERGE_TAG, []string{"<<"}},
+	}
+
+	m := resolveMap
+	for _, item := range resolveMapList {
+		for _, s := range item.l {
+			m[s] = resolveMapItem{item.v, item.tag}
+		}
+	}
+}
+
+const longTagPrefix = "tag:yaml.org,2002:"
+
+func shortTag(tag string) string {
+	// TODO This can easily be made faster and produce less garbage.
+	if strings.HasPrefix(tag, longTagPrefix) {
+		return "!!" + tag[len(longTagPrefix):]
+	}
+	return tag
+}
+
+func longTag(tag string) string {
+	if strings.HasPrefix(tag, "!!") {
+		return longTagPrefix + tag[2:]
+	}
+	return tag
+}
+
+func resolvableTag(tag string) bool {
+	switch tag {
+	case "", yaml_STR_TAG, yaml_BOOL_TAG, yaml_INT_TAG, yaml_FLOAT_TAG, yaml_NULL_TAG:
+		return true
+	}
+	return false
+}
+
+var yamlStyleFloat = regexp.MustCompile(`^[-+]?[0-9]*\.?[0-9]+([eE][-+][0-9]+)?$`)
+
+func resolve(tag string, in string) (rtag string, out interface{}) {
+	if !resolvableTag(tag) {
+		return tag, in
+	}
+
+	defer func() {
+		switch tag {
+		case "", rtag, yaml_STR_TAG, yaml_BINARY_TAG:
+			return
+		}
+		failf("cannot decode %s `%s` as a %s", shortTag(rtag), in, shortTag(tag))
+	}()
+
+	// Any data is accepted as a !!str or !!binary.
+	// Otherwise, the prefix is enough of a hint about what it might be.
+	hint := byte('N')
+	if in != "" {
+		hint = resolveTable[in[0]]
+	}
+	if hint != 0 && tag != yaml_STR_TAG && tag != yaml_BINARY_TAG {
+		// Handle things we can lookup in a map.
+		if item, ok := resolveMap[in]; ok {
+			return item.tag, item.value
+		}
+
+		// Base 60 floats are a bad idea, were dropped in YAML 1.2, and
+		// are purposefully unsupported here. They're still quoted on
+		// the way out for compatibility with other parser, though.
+
+		switch hint {
+		case 'M':
+			// We've already checked the map above.
+
+		case '.':
+			// Not in the map, so maybe a normal float.
+			floatv, err := strconv.ParseFloat(in, 64)
+			if err == nil {
+				return yaml_FLOAT_TAG, floatv
+			}
+
+		case 'D', 'S':
+			// Int, float, or timestamp.
+			plain := strings.Replace(in, "_", "", -1)
+			intv, err := strconv.ParseInt(plain, 0, 64)
+			if err == nil {
+				if intv == int64(int(intv)) {
+					return yaml_INT_TAG, int(intv)
+				} else {
+					return yaml_INT_TAG, intv
+				}
+			}
+			uintv, err := strconv.ParseUint(plain, 0, 64)
+			if err == nil {
+				return yaml_INT_TAG, uintv
+			}
+			if yamlStyleFloat.MatchString(plain) {
+				floatv, err := strconv.ParseFloat(plain, 64)
+				if err == nil {
+					return yaml_FLOAT_TAG, floatv
+				}
+			}
+			if strings.HasPrefix(plain, "0b") {
+				intv, err := strconv.ParseInt(plain[2:], 2, 64)
+				if err == nil {
+					if intv == int64(int(intv)) {
+						return yaml_INT_TAG, int(intv)
+					} else {
+						return yaml_INT_TAG, intv
+					}
+				}
+				uintv, err := strconv.ParseUint(plain[2:], 2, 64)
+				if err == nil {
+					return yaml_INT_TAG, uintv
+				}
+			} else if strings.HasPrefix(plain, "-0b") {
+				intv, err := strconv.ParseInt(plain[3:], 2, 64)
+				if err == nil {
+					if intv == int64(int(intv)) {
+						return yaml_INT_TAG, -int(intv)
+					} else {
+						return yaml_INT_TAG, -intv
+					}
+				}
+			}
+			// XXX Handle timestamps here.
+
+		default:
+			panic("resolveTable item not yet handled: " + string(rune(hint)) + " (with " + in + ")")
+		}
+	}
+	if tag == yaml_BINARY_TAG {
+		return yaml_BINARY_TAG, in
+	}
+	if utf8.ValidString(in) {
+		return yaml_STR_TAG, in
+	}
+	return yaml_BINARY_TAG, encodeBase64(in)
+}
+
+// encodeBase64 encodes s as base64 that is broken up into multiple lines
+// as appropriate for the resulting length.
+func encodeBase64(s string) string {
+	const lineLen = 70
+	encLen := base64.StdEncoding.EncodedLen(len(s))
+	lines := encLen/lineLen + 1
+	buf := make([]byte, encLen*2+lines)
+	in := buf[0:encLen]
+	out := buf[encLen:]
+	base64.StdEncoding.Encode(in, []byte(s))
+	k := 0
+	for i := 0; i < len(in); i += lineLen {
+		j := i + lineLen
+		if j > len(in) {
+			j = len(in)
+		}
+		k += copy(out[k:], in[i:j])
+		if lines > 1 {
+			out[k] = '\n'
+			k++
+		}
+	}
+	return string(out[:k])
+}

vendor/gopkg.in/yaml.v2/sorter.go

@@ -0,0 +1,104 @@
+package yaml
+
+import (
+	"reflect"
+	"unicode"
+)
+
+type keyList []reflect.Value
+
+func (l keyList) Len() int      { return len(l) }
+func (l keyList) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
+func (l keyList) Less(i, j int) bool {
+	a := l[i]
+	b := l[j]
+	ak := a.Kind()
+	bk := b.Kind()
+	for (ak == reflect.Interface || ak == reflect.Ptr) && !a.IsNil() {
+		a = a.Elem()
+		ak = a.Kind()
+	}
+	for (bk == reflect.Interface || bk == reflect.Ptr) && !b.IsNil() {
+		b = b.Elem()
+		bk = b.Kind()
+	}
+	af, aok := keyFloat(a)
+	bf, bok := keyFloat(b)
+	if aok && bok {
+		if af != bf {
+			return af < bf
+		}
+		if ak != bk {
+			return ak < bk
+		}
+		return numLess(a, b)
+	}
+	if ak != reflect.String || bk != reflect.String {
+		return ak < bk
+	}
+	ar, br := []rune(a.String()), []rune(b.String())
+	for i := 0; i < len(ar) && i < len(br); i++ {
+		if ar[i] == br[i] {
+			continue
+		}
+		al := unicode.IsLetter(ar[i])
+		bl := unicode.IsLetter(br[i])
+		if al && bl {
+			return ar[i] < br[i]
+		}
+		if al || bl {
+			return bl
+		}
+		var ai, bi int
+		var an, bn int64
+		for ai = i; ai < len(ar) && unicode.IsDigit(ar[ai]); ai++ {
+			an = an*10 + int64(ar[ai]-'0')
+		}
+		for bi = i; bi < len(br) && unicode.IsDigit(br[bi]); bi++ {
+			bn = bn*10 + int64(br[bi]-'0')
+		}
+		if an != bn {
+			return an < bn
+		}
+		if ai != bi {
+			return ai < bi
+		}
+		return ar[i] < br[i]
+	}
+	return len(ar) < len(br)
+}
+
+// keyFloat returns a float value for v if it is a number/bool
+// and whether it is a number/bool or not.
+func keyFloat(v reflect.Value) (f float64, ok bool) {
+	switch v.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return float64(v.Int()), true
+	case reflect.Float32, reflect.Float64:
+		return v.Float(), true
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return float64(v.Uint()), true
+	case reflect.Bool:
+		if v.Bool() {
+			return 1, true
+		}
+		return 0, true
+	}
+	return 0, false
+}
+
+// numLess returns whether a < b.
+// a and b must necessarily have the same kind.
+func numLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return a.Int() < b.Int()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	}
+	panic("not a number")
+}

vendor/gopkg.in/yaml.v2/writerc.go

@@ -0,0 +1,89 @@
+package yaml
+
+// Set the writer error and return false.
+func yaml_emitter_set_writer_error(emitter *yaml_emitter_t, problem string) bool {
+	emitter.error = yaml_WRITER_ERROR
+	emitter.problem = problem
+	return false
+}
+
+// Flush the output buffer.
+func yaml_emitter_flush(emitter *yaml_emitter_t) bool {
+	if emitter.write_handler == nil {
+		panic("write handler not set")
+	}
+
+	// Check if the buffer is empty.
+	if emitter.buffer_pos == 0 {
+		return true
+	}
+
+	// If the output encoding is UTF-8, we don't need to recode the buffer.
+	if emitter.encoding == yaml_UTF8_ENCODING {
+		if err := emitter.write_handler(emitter, emitter.buffer[:emitter.buffer_pos]); err != nil {
+			return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+		}
+		emitter.buffer_pos = 0
+		return true
+	}
+
+	// Recode the buffer into the raw buffer.
+	var low, high int
+	if emitter.encoding == yaml_UTF16LE_ENCODING {
+		low, high = 0, 1
+	} else {
+		high, low = 1, 0
+	}
+
+	pos := 0
+	for pos < emitter.buffer_pos {
+		// See the "reader.c" code for more details on UTF-8 encoding.  Note
+		// that we assume that the buffer contains a valid UTF-8 sequence.
+
+		// Read the next UTF-8 character.
+		octet := emitter.buffer[pos]
+
+		var w int
+		var value rune
+		switch {
+		case octet&0x80 == 0x00:
+			w, value = 1, rune(octet&0x7F)
+		case octet&0xE0 == 0xC0:
+			w, value = 2, rune(octet&0x1F)
+		case octet&0xF0 == 0xE0:
+			w, value = 3, rune(octet&0x0F)
+		case octet&0xF8 == 0xF0:
+			w, value = 4, rune(octet&0x07)
+		}
+		for k := 1; k < w; k++ {
+			octet = emitter.buffer[pos+k]
+			value = (value << 6) + (rune(octet) & 0x3F)
+		}
+		pos += w
+
+		// Write the character.
+		if value < 0x10000 {
+			var b [2]byte
+			b[high] = byte(value >> 8)
+			b[low] = byte(value & 0xFF)
+			emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1])
+		} else {
+			// Write the character using a surrogate pair (check "reader.c").
+			var b [4]byte
+			value -= 0x10000
+			b[high] = byte(0xD8 + (value >> 18))
+			b[low] = byte((value >> 10) & 0xFF)
+			b[high+2] = byte(0xDC + ((value >> 8) & 0xFF))
+			b[low+2] = byte(value & 0xFF)
+			emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1], b[2], b[3])
+		}
+	}
+
+	// Write the raw buffer.
+	if err := emitter.write_handler(emitter, emitter.raw_buffer); err != nil {
+		return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error())
+	}
+	emitter.buffer_pos = 0
+	emitter.raw_buffer = emitter.raw_buffer[:0]
+	return true
+}

vendor/gopkg.in/yaml.v2/yaml.go

@@ -0,0 +1,357 @@
+// Package yaml implements YAML support for the Go language.
+//
+// Source code and other details for the project are available at GitHub:
+//
+//   https://github.com/go-yaml/yaml
+//
+package yaml
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+	"sync"
+)
+
+// MapSlice encodes and decodes as a YAML map.
+// The order of keys is preserved when encoding and decoding.
+type MapSlice []MapItem
+
+// MapItem is an item in a MapSlice.
+type MapItem struct {
+	Key, Value interface{}
+}
+
+// The Unmarshaler interface may be implemented by types to customize their
+// behavior when being unmarshaled from a YAML document. The UnmarshalYAML
+// method receives a function that may be called to unmarshal the original
+// YAML value into a field or variable. It is safe to call the unmarshal
+// function parameter more than once if necessary.
+type Unmarshaler interface {
+	UnmarshalYAML(unmarshal func(interface{}) error) error
+}
+
+// The Marshaler interface may be implemented by types to customize their
+// behavior when being marshaled into a YAML document. The returned value
+// is marshaled in place of the original value implementing Marshaler.
+//
+// If an error is returned by MarshalYAML, the marshaling procedure stops
+// and returns with the provided error.
+type Marshaler interface {
+	MarshalYAML() (interface{}, error)
+}
+
+// Unmarshal decodes the first document found within the in byte slice
+// and assigns decoded values into the out value.
+//
+// Maps and pointers (to a struct, string, int, etc) are accepted as out
+// values. If an internal pointer within a struct is not initialized,
+// the yaml package will initialize it if necessary for unmarshalling
+// the provided data. The out parameter must not be nil.
+//
+// The type of the decoded values should be compatible with the respective
+// values in out. If one or more values cannot be decoded due to a type
+// mismatches, decoding continues partially until the end of the YAML
+// content, and a *yaml.TypeError is returned with details for all
+// missed values.
+//
+// Struct fields are only unmarshalled if they are exported (have an
+// upper case first letter), and are unmarshalled using the field name
+// lowercased as the default key. Custom keys may be defined via the
+// "yaml" name in the field tag: the content preceding the first comma
+// is used as the key, and the following comma-separated options are
+// used to tweak the marshalling process (see Marshal).
+// Conflicting names result in a runtime error.
+//
+// For example:
+//
+//     type T struct {
+//         F int `yaml:"a,omitempty"`
+//         B int
+//     }
+//     var t T
+//     yaml.Unmarshal([]byte("a: 1\nb: 2"), &t)
+//
+// See the documentation of Marshal for the format of tags and a list of
+// supported tag options.
+//
+func Unmarshal(in []byte, out interface{}) (err error) {
+	return unmarshal(in, out, false)
+}
+
+// UnmarshalStrict is like Unmarshal except that any fields that are found
+// in the data that do not have corresponding struct members will result in
+// an error.
+func UnmarshalStrict(in []byte, out interface{}) (err error) {
+	return unmarshal(in, out, true)
+}
+
+func unmarshal(in []byte, out interface{}, strict bool) (err error) {
+	defer handleErr(&err)
+	d := newDecoder(strict)
+	p := newParser(in)
+	defer p.destroy()
+	node := p.parse()
+	if node != nil {
+		v := reflect.ValueOf(out)
+		if v.Kind() == reflect.Ptr && !v.IsNil() {
+			v = v.Elem()
+		}
+		d.unmarshal(node, v)
+	}
+	if len(d.terrors) > 0 {
+		return &TypeError{d.terrors}
+	}
+	return nil
+}
+
+// Marshal serializes the value provided into a YAML document. The structure
+// of the generated document will reflect the structure of the value itself.
+// Maps and pointers (to struct, string, int, etc) are accepted as the in value.
+//
+// Struct fields are only unmarshalled if they are exported (have an upper case
+// first letter), and are unmarshalled using the field name lowercased as the
+// default key. Custom keys may be defined via the "yaml" name in the field
+// tag: the content preceding the first comma is used as the key, and the
+// following comma-separated options are used to tweak the marshalling process.
+// Conflicting names result in a runtime error.
+//
+// The field tag format accepted is:
+//
+//     `(...) yaml:"[<key>][,<flag1>[,<flag2>]]" (...)`
+//
+// The following flags are currently supported:
+//
+//     omitempty    Only include the field if it's not set to the zero
+//                  value for the type or to empty slices or maps.
+//                  Does not apply to zero valued structs.
+//
+//     flow         Marshal using a flow style (useful for structs,
+//                  sequences and maps).
+//
+//     inline       Inline the field, which must be a struct or a map,
+//                  causing all of its fields or keys to be processed as if
+//                  they were part of the outer struct. For maps, keys must
+//                  not conflict with the yaml keys of other struct fields.
+//
+// In addition, if the key is "-", the field is ignored.
+//
+// For example:
+//
+//     type T struct {
+//         F int "a,omitempty"
+//         B int
+//     }
+//     yaml.Marshal(&T{B: 2}) // Returns "b: 2\n"
+//     yaml.Marshal(&T{F: 1}} // Returns "a: 1\nb: 0\n"
+//
+func Marshal(in interface{}) (out []byte, err error) {
+	defer handleErr(&err)
+	e := newEncoder()
+	defer e.destroy()
+	e.marshal("", reflect.ValueOf(in))
+	e.finish()
+	out = e.out
+	return
+}
+
+func handleErr(err *error) {
+	if v := recover(); v != nil {
+		if e, ok := v.(yamlError); ok {
+			*err = e.err
+		} else {
+			panic(v)
+		}
+	}
+}
+
+type yamlError struct {
+	err error
+}
+
+func fail(err error) {
+	panic(yamlError{err})
+}
+
+func failf(format string, args ...interface{}) {
+	panic(yamlError{fmt.Errorf("yaml: "+format, args...)})
+}
+
+// A TypeError is returned by Unmarshal when one or more fields in
+// the YAML document cannot be properly decoded into the requested
+// types. When this error is returned, the value is still
+// unmarshaled partially.
+type TypeError struct {
+	Errors []string
+}
+
+func (e *TypeError) Error() string {
+	return fmt.Sprintf("yaml: unmarshal errors:\n  %s", strings.Join(e.Errors, "\n  "))
+}
+
+// --------------------------------------------------------------------------
+// Maintain a mapping of keys to structure field indexes
+
+// The code in this section was copied from mgo/bson.
+
+// structInfo holds details for the serialization of fields of
+// a given struct.
+type structInfo struct {
+	FieldsMap  map[string]fieldInfo
+	FieldsList []fieldInfo
+
+	// InlineMap is the number of the field in the struct that
+	// contains an ,inline map, or -1 if there's none.
+	InlineMap int
+}
+
+type fieldInfo struct {
+	Key       string
+	Num       int
+	OmitEmpty bool
+	Flow      bool
+
+	// Inline holds the field index if the field is part of an inlined struct.
+	Inline []int
+}
+
+var structMap = make(map[reflect.Type]*structInfo)
+var fieldMapMutex sync.RWMutex
+
+func getStructInfo(st reflect.Type) (*structInfo, error) {
+	fieldMapMutex.RLock()
+	sinfo, found := structMap[st]
+	fieldMapMutex.RUnlock()
+	if found {
+		return sinfo, nil
+	}
+
+	n := st.NumField()
+	fieldsMap := make(map[string]fieldInfo)
+	fieldsList := make([]fieldInfo, 0, n)
+	inlineMap := -1
+	for i := 0; i != n; i++ {
+		field := st.Field(i)
+		if field.PkgPath != "" && !field.Anonymous {
+			continue // Private field
+		}
+
+		info := fieldInfo{Num: i}
+
+		tag := field.Tag.Get("yaml")
+		if tag == "" && strings.Index(string(field.Tag), ":") < 0 {
+			tag = string(field.Tag)
+		}
+		if tag == "-" {
+			continue
+		}
+
+		inline := false
+		fields := strings.Split(tag, ",")
+		if len(fields) > 1 {
+			for _, flag := range fields[1:] {
+				switch flag {
+				case "omitempty":
+					info.OmitEmpty = true
+				case "flow":
+					info.Flow = true
+				case "inline":
+					inline = true
+				default:
+					return nil, errors.New(fmt.Sprintf("Unsupported flag %q in tag %q of type %s", flag, tag, st))
+				}
+			}
+			tag = fields[0]
+		}
+
+		if inline {
+			switch field.Type.Kind() {
+			case reflect.Map:
+				if inlineMap >= 0 {
+					return nil, errors.New("Multiple ,inline maps in struct " + st.String())
+				}
+				if field.Type.Key() != reflect.TypeOf("") {
+					return nil, errors.New("Option ,inline needs a map with string keys in struct " + st.String())
+				}
+				inlineMap = info.Num
+			case reflect.Struct:
+				sinfo, err := getStructInfo(field.Type)
+				if err != nil {
+					return nil, err
+				}
+				for _, finfo := range sinfo.FieldsList {
+					if _, found := fieldsMap[finfo.Key]; found {
+						msg := "Duplicated key '" + finfo.Key + "' in struct " + st.String()
+						return nil, errors.New(msg)
+					}
+					if finfo.Inline == nil {
+						finfo.Inline = []int{i, finfo.Num}
+					} else {
+						finfo.Inline = append([]int{i}, finfo.Inline...)
+					}
+					fieldsMap[finfo.Key] = finfo
+					fieldsList = append(fieldsList, finfo)
+				}
+			default:
+				//return nil, errors.New("Option ,inline needs a struct value or map field")
+				return nil, errors.New("Option ,inline needs a struct value field")
+			}
+			continue
+		}
+
+		if tag != "" {
+			info.Key = tag
+		} else {
+			info.Key = strings.ToLower(field.Name)
+		}
+
+		if _, found = fieldsMap[info.Key]; found {
+			msg := "Duplicated key '" + info.Key + "' in struct " + st.String()
+			return nil, errors.New(msg)
+		}
+
+		fieldsList = append(fieldsList, info)
+		fieldsMap[info.Key] = info
+	}
+
+	sinfo = &structInfo{fieldsMap, fieldsList, inlineMap}
+
+	fieldMapMutex.Lock()
+	structMap[st] = sinfo
+	fieldMapMutex.Unlock()
+	return sinfo, nil
+}
+
+func isZero(v reflect.Value) bool {
+	switch v.Kind() {
+	case reflect.String:
+		return len(v.String()) == 0
+	case reflect.Interface, reflect.Ptr:
+		return v.IsNil()
+	case reflect.Slice:
+		return v.Len() == 0
+	case reflect.Map:
+		return v.Len() == 0
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int() == 0
+	case reflect.Float32, reflect.Float64:
+		return v.Float() == 0
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return v.Uint() == 0
+	case reflect.Bool:
+		return !v.Bool()
+	case reflect.Struct:
+		vt := v.Type()
+		for i := v.NumField() - 1; i >= 0; i-- {
+			if vt.Field(i).PkgPath != "" {
+				continue // Private field
+			}
+			if !isZero(v.Field(i)) {
+				return false
+			}
+		}
+		return true
+	}
+	return false
+}

vendor/gopkg.in/yaml.v2/yamlh.go

@@ -0,0 +1,716 @@
+package yaml
+
+import (
+	"io"
+)
+
+// The version directive data.
+type yaml_version_directive_t struct {
+	major int8 // The major version number.
+	minor int8 // The minor version number.
+}
+
+// The tag directive data.
+type yaml_tag_directive_t struct {
+	handle []byte // The tag handle.
+	prefix []byte // The tag prefix.
+}
+
+type yaml_encoding_t int
+
+// The stream encoding.
+const (
+	// Let the parser choose the encoding.
+	yaml_ANY_ENCODING yaml_encoding_t = iota
+
+	yaml_UTF8_ENCODING    // The default UTF-8 encoding.
+	yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM.
+	yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM.
+)
+
+type yaml_break_t int
+
+// Line break types.
+const (
+	// Let the parser choose the break type.
+	yaml_ANY_BREAK yaml_break_t = iota
+
+	yaml_CR_BREAK   // Use CR for line breaks (Mac style).
+	yaml_LN_BREAK   // Use LN for line breaks (Unix style).
+	yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style).
+)
+
+type yaml_error_type_t int
+
+// Many bad things could happen with the parser and emitter.
+const (
+	// No error is produced.
+	yaml_NO_ERROR yaml_error_type_t = iota
+
+	yaml_MEMORY_ERROR   // Cannot allocate or reallocate a block of memory.
+	yaml_READER_ERROR   // Cannot read or decode the input stream.
+	yaml_SCANNER_ERROR  // Cannot scan the input stream.
+	yaml_PARSER_ERROR   // Cannot parse the input stream.
+	yaml_COMPOSER_ERROR // Cannot compose a YAML document.
+	yaml_WRITER_ERROR   // Cannot write to the output stream.
+	yaml_EMITTER_ERROR  // Cannot emit a YAML stream.
+)
+
+// The pointer position.
+type yaml_mark_t struct {
+	index  int // The position index.
+	line   int // The position line.
+	column int // The position column.
+}
+
+// Node Styles
+
+type yaml_style_t int8
+
+type yaml_scalar_style_t yaml_style_t
+
+// Scalar styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota
+
+	yaml_PLAIN_SCALAR_STYLE         // The plain scalar style.
+	yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style.
+	yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style.
+	yaml_LITERAL_SCALAR_STYLE       // The literal scalar style.
+	yaml_FOLDED_SCALAR_STYLE        // The folded scalar style.
+)
+
+type yaml_sequence_style_t yaml_style_t
+
+// Sequence styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota
+
+	yaml_BLOCK_SEQUENCE_STYLE // The block sequence style.
+	yaml_FLOW_SEQUENCE_STYLE  // The flow sequence style.
+)
+
+type yaml_mapping_style_t yaml_style_t
+
+// Mapping styles.
+const (
+	// Let the emitter choose the style.
+	yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota
+
+	yaml_BLOCK_MAPPING_STYLE // The block mapping style.
+	yaml_FLOW_MAPPING_STYLE  // The flow mapping style.
+)
+
+// Tokens
+
+type yaml_token_type_t int
+
+// Token types.
+const (
+	// An empty token.
+	yaml_NO_TOKEN yaml_token_type_t = iota
+
+	yaml_STREAM_START_TOKEN // A STREAM-START token.
+	yaml_STREAM_END_TOKEN   // A STREAM-END token.
+
+	yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token.
+	yaml_TAG_DIRECTIVE_TOKEN     // A TAG-DIRECTIVE token.
+	yaml_DOCUMENT_START_TOKEN    // A DOCUMENT-START token.
+	yaml_DOCUMENT_END_TOKEN      // A DOCUMENT-END token.
+
+	yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token.
+	yaml_BLOCK_MAPPING_START_TOKEN  // A BLOCK-SEQUENCE-END token.
+	yaml_BLOCK_END_TOKEN            // A BLOCK-END token.
+
+	yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token.
+	yaml_FLOW_SEQUENCE_END_TOKEN   // A FLOW-SEQUENCE-END token.
+	yaml_FLOW_MAPPING_START_TOKEN  // A FLOW-MAPPING-START token.
+	yaml_FLOW_MAPPING_END_TOKEN    // A FLOW-MAPPING-END token.
+
+	yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token.
+	yaml_FLOW_ENTRY_TOKEN  // A FLOW-ENTRY token.
+	yaml_KEY_TOKEN         // A KEY token.
+	yaml_VALUE_TOKEN       // A VALUE token.
+
+	yaml_ALIAS_TOKEN  // An ALIAS token.
+	yaml_ANCHOR_TOKEN // An ANCHOR token.
+	yaml_TAG_TOKEN    // A TAG token.
+	yaml_SCALAR_TOKEN // A SCALAR token.
+)
+
+func (tt yaml_token_type_t) String() string {
+	switch tt {
+	case yaml_NO_TOKEN:
+		return "yaml_NO_TOKEN"
+	case yaml_STREAM_START_TOKEN:
+		return "yaml_STREAM_START_TOKEN"
+	case yaml_STREAM_END_TOKEN:
+		return "yaml_STREAM_END_TOKEN"
+	case yaml_VERSION_DIRECTIVE_TOKEN:
+		return "yaml_VERSION_DIRECTIVE_TOKEN"
+	case yaml_TAG_DIRECTIVE_TOKEN:
+		return "yaml_TAG_DIRECTIVE_TOKEN"
+	case yaml_DOCUMENT_START_TOKEN:
+		return "yaml_DOCUMENT_START_TOKEN"
+	case yaml_DOCUMENT_END_TOKEN:
+		return "yaml_DOCUMENT_END_TOKEN"
+	case yaml_BLOCK_SEQUENCE_START_TOKEN:
+		return "yaml_BLOCK_SEQUENCE_START_TOKEN"
+	case yaml_BLOCK_MAPPING_START_TOKEN:
+		return "yaml_BLOCK_MAPPING_START_TOKEN"
+	case yaml_BLOCK_END_TOKEN:
+		return "yaml_BLOCK_END_TOKEN"
+	case yaml_FLOW_SEQUENCE_START_TOKEN:
+		return "yaml_FLOW_SEQUENCE_START_TOKEN"
+	case yaml_FLOW_SEQUENCE_END_TOKEN:
+		return "yaml_FLOW_SEQUENCE_END_TOKEN"
+	case yaml_FLOW_MAPPING_START_TOKEN:
+		return "yaml_FLOW_MAPPING_START_TOKEN"
+	case yaml_FLOW_MAPPING_END_TOKEN:
+		return "yaml_FLOW_MAPPING_END_TOKEN"
+	case yaml_BLOCK_ENTRY_TOKEN:
+		return "yaml_BLOCK_ENTRY_TOKEN"
+	case yaml_FLOW_ENTRY_TOKEN:
+		return "yaml_FLOW_ENTRY_TOKEN"
+	case yaml_KEY_TOKEN:
+		return "yaml_KEY_TOKEN"
+	case yaml_VALUE_TOKEN:
+		return "yaml_VALUE_TOKEN"
+	case yaml_ALIAS_TOKEN:
+		return "yaml_ALIAS_TOKEN"
+	case yaml_ANCHOR_TOKEN:
+		return "yaml_ANCHOR_TOKEN"
+	case yaml_TAG_TOKEN:
+		return "yaml_TAG_TOKEN"
+	case yaml_SCALAR_TOKEN:
+		return "yaml_SCALAR_TOKEN"
+	}
+	return "<unknown token>"
+}
+
+// The token structure.
+type yaml_token_t struct {
+	// The token type.
+	typ yaml_token_type_t
+
+	// The start/end of the token.
+	start_mark, end_mark yaml_mark_t
+
+	// The stream encoding (for yaml_STREAM_START_TOKEN).
+	encoding yaml_encoding_t
+
+	// The alias/anchor/scalar value or tag/tag directive handle
+	// (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN).
+	value []byte
+
+	// The tag suffix (for yaml_TAG_TOKEN).
+	suffix []byte
+
+	// The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN).
+	prefix []byte
+
+	// The scalar style (for yaml_SCALAR_TOKEN).
+	style yaml_scalar_style_t
+
+	// The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN).
+	major, minor int8
+}
+
+// Events
+
+type yaml_event_type_t int8
+
+// Event types.
+const (
+	// An empty event.
+	yaml_NO_EVENT yaml_event_type_t = iota
+
+	yaml_STREAM_START_EVENT   // A STREAM-START event.
+	yaml_STREAM_END_EVENT     // A STREAM-END event.
+	yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event.
+	yaml_DOCUMENT_END_EVENT   // A DOCUMENT-END event.
+	yaml_ALIAS_EVENT          // An ALIAS event.
+	yaml_SCALAR_EVENT         // A SCALAR event.
+	yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event.
+	yaml_SEQUENCE_END_EVENT   // A SEQUENCE-END event.
+	yaml_MAPPING_START_EVENT  // A MAPPING-START event.
+	yaml_MAPPING_END_EVENT    // A MAPPING-END event.
+)
+
+// The event structure.
+type yaml_event_t struct {
+
+	// The event type.
+	typ yaml_event_type_t
+
+	// The start and end of the event.
+	start_mark, end_mark yaml_mark_t
+
+	// The document encoding (for yaml_STREAM_START_EVENT).
+	encoding yaml_encoding_t
+
+	// The version directive (for yaml_DOCUMENT_START_EVENT).
+	version_directive *yaml_version_directive_t
+
+	// The list of tag directives (for yaml_DOCUMENT_START_EVENT).
+	tag_directives []yaml_tag_directive_t
+
+	// The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT).
+	anchor []byte
+
+	// The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+	tag []byte
+
+	// The scalar value (for yaml_SCALAR_EVENT).
+	value []byte
+
+	// Is the document start/end indicator implicit, or the tag optional?
+	// (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT).
+	implicit bool
+
+	// Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT).
+	quoted_implicit bool
+
+	// The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT).
+	style yaml_style_t
+}
+
+func (e *yaml_event_t) scalar_style() yaml_scalar_style_t     { return yaml_scalar_style_t(e.style) }
+func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) }
+func (e *yaml_event_t) mapping_style() yaml_mapping_style_t   { return yaml_mapping_style_t(e.style) }
+
+// Nodes
+
+const (
+	yaml_NULL_TAG      = "tag:yaml.org,2002:null"      // The tag !!null with the only possible value: null.
+	yaml_BOOL_TAG      = "tag:yaml.org,2002:bool"      // The tag !!bool with the values: true and false.
+	yaml_STR_TAG       = "tag:yaml.org,2002:str"       // The tag !!str for string values.
+	yaml_INT_TAG       = "tag:yaml.org,2002:int"       // The tag !!int for integer values.
+	yaml_FLOAT_TAG     = "tag:yaml.org,2002:float"     // The tag !!float for float values.
+	yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values.
+
+	yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences.
+	yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping.
+
+	// Not in original libyaml.
+	yaml_BINARY_TAG = "tag:yaml.org,2002:binary"
+	yaml_MERGE_TAG  = "tag:yaml.org,2002:merge"
+
+	yaml_DEFAULT_SCALAR_TAG   = yaml_STR_TAG // The default scalar tag is !!str.
+	yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq.
+	yaml_DEFAULT_MAPPING_TAG  = yaml_MAP_TAG // The default mapping tag is !!map.
+)
+
+type yaml_node_type_t int
+
+// Node types.
+const (
+	// An empty node.
+	yaml_NO_NODE yaml_node_type_t = iota
+
+	yaml_SCALAR_NODE   // A scalar node.
+	yaml_SEQUENCE_NODE // A sequence node.
+	yaml_MAPPING_NODE  // A mapping node.
+)
+
+// An element of a sequence node.
+type yaml_node_item_t int
+
+// An element of a mapping node.
+type yaml_node_pair_t struct {
+	key   int // The key of the element.
+	value int // The value of the element.
+}
+
+// The node structure.
+type yaml_node_t struct {
+	typ yaml_node_type_t // The node type.
+	tag []byte           // The node tag.
+
+	// The node data.
+
+	// The scalar parameters (for yaml_SCALAR_NODE).
+	scalar struct {
+		value  []byte              // The scalar value.
+		length int                 // The length of the scalar value.
+		style  yaml_scalar_style_t // The scalar style.
+	}
+
+	// The sequence parameters (for YAML_SEQUENCE_NODE).
+	sequence struct {
+		items_data []yaml_node_item_t    // The stack of sequence items.
+		style      yaml_sequence_style_t // The sequence style.
+	}
+
+	// The mapping parameters (for yaml_MAPPING_NODE).
+	mapping struct {
+		pairs_data  []yaml_node_pair_t   // The stack of mapping pairs (key, value).
+		pairs_start *yaml_node_pair_t    // The beginning of the stack.
+		pairs_end   *yaml_node_pair_t    // The end of the stack.
+		pairs_top   *yaml_node_pair_t    // The top of the stack.
+		style       yaml_mapping_style_t // The mapping style.
+	}
+
+	start_mark yaml_mark_t // The beginning of the node.
+	end_mark   yaml_mark_t // The end of the node.
+
+}
+
+// The document structure.
+type yaml_document_t struct {
+
+	// The document nodes.
+	nodes []yaml_node_t
+
+	// The version directive.
+	version_directive *yaml_version_directive_t
+
+	// The list of tag directives.
+	tag_directives_data  []yaml_tag_directive_t
+	tag_directives_start int // The beginning of the tag directives list.
+	tag_directives_end   int // The end of the tag directives list.
+
+	start_implicit int // Is the document start indicator implicit?
+	end_implicit   int // Is the document end indicator implicit?
+
+	// The start/end of the document.
+	start_mark, end_mark yaml_mark_t
+}
+
+// The prototype of a read handler.
+//
+// The read handler is called when the parser needs to read more bytes from the
+// source. The handler should write not more than size bytes to the buffer.
+// The number of written bytes should be set to the size_read variable.
+//
+// [in,out]   data        A pointer to an application data specified by
+//                        yaml_parser_set_input().
+// [out]      buffer      The buffer to write the data from the source.
+// [in]       size        The size of the buffer.
+// [out]      size_read   The actual number of bytes read from the source.
+//
+// On success, the handler should return 1.  If the handler failed,
+// the returned value should be 0. On EOF, the handler should set the
+// size_read to 0 and return 1.
+type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error)
+
+// This structure holds information about a potential simple key.
+type yaml_simple_key_t struct {
+	possible     bool        // Is a simple key possible?
+	required     bool        // Is a simple key required?
+	token_number int         // The number of the token.
+	mark         yaml_mark_t // The position mark.
+}
+
+// The states of the parser.
+type yaml_parser_state_t int
+
+const (
+	yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota
+
+	yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE           // Expect the beginning of an implicit document.
+	yaml_PARSE_DOCUMENT_START_STATE                    // Expect DOCUMENT-START.
+	yaml_PARSE_DOCUMENT_CONTENT_STATE                  // Expect the content of a document.
+	yaml_PARSE_DOCUMENT_END_STATE                      // Expect DOCUMENT-END.
+	yaml_PARSE_BLOCK_NODE_STATE                        // Expect a block node.
+	yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence.
+	yaml_PARSE_FLOW_NODE_STATE                         // Expect a flow node.
+	yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE        // Expect the first entry of a block sequence.
+	yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE              // Expect an entry of a block sequence.
+	yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE         // Expect an entry of an indentless sequence.
+	yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE           // Expect the first key of a block mapping.
+	yaml_PARSE_BLOCK_MAPPING_KEY_STATE                 // Expect a block mapping key.
+	yaml_PARSE_BLOCK_MAPPING_VALUE_STATE               // Expect a block mapping value.
+	yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE         // Expect the first entry of a flow sequence.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE               // Expect an entry of a flow sequence.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE   // Expect a key of an ordered mapping.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping.
+	yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE   // Expect the and of an ordered mapping entry.
+	yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE            // Expect the first key of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_KEY_STATE                  // Expect a key of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_VALUE_STATE                // Expect a value of a flow mapping.
+	yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE          // Expect an empty value of a flow mapping.
+	yaml_PARSE_END_STATE                               // Expect nothing.
+)
+
+func (ps yaml_parser_state_t) String() string {
+	switch ps {
+	case yaml_PARSE_STREAM_START_STATE:
+		return "yaml_PARSE_STREAM_START_STATE"
+	case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE:
+		return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE"
+	case yaml_PARSE_DOCUMENT_START_STATE:
+		return "yaml_PARSE_DOCUMENT_START_STATE"
+	case yaml_PARSE_DOCUMENT_CONTENT_STATE:
+		return "yaml_PARSE_DOCUMENT_CONTENT_STATE"
+	case yaml_PARSE_DOCUMENT_END_STATE:
+		return "yaml_PARSE_DOCUMENT_END_STATE"
+	case yaml_PARSE_BLOCK_NODE_STATE:
+		return "yaml_PARSE_BLOCK_NODE_STATE"
+	case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE:
+		return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE"
+	case yaml_PARSE_FLOW_NODE_STATE:
+		return "yaml_PARSE_FLOW_NODE_STATE"
+	case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE:
+		return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE"
+	case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_KEY_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE"
+	case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE:
+		return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE"
+	case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE"
+	case yaml_PARSE_FLOW_MAPPING_KEY_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_KEY_STATE"
+	case yaml_PARSE_FLOW_MAPPING_VALUE_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE"
+	case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE:
+		return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE"
+	case yaml_PARSE_END_STATE:
+		return "yaml_PARSE_END_STATE"
+	}
+	return "<unknown parser state>"
+}
+
+// This structure holds aliases data.
+type yaml_alias_data_t struct {
+	anchor []byte      // The anchor.
+	index  int         // The node id.
+	mark   yaml_mark_t // The anchor mark.
+}
+
+// The parser structure.
+//
+// All members are internal. Manage the structure using the
+// yaml_parser_ family of functions.
+type yaml_parser_t struct {
+
+	// Error handling
+
+	error yaml_error_type_t // Error type.
+
+	problem string // Error description.
+
+	// The byte about which the problem occurred.
+	problem_offset int
+	problem_value  int
+	problem_mark   yaml_mark_t
+
+	// The error context.
+	context      string
+	context_mark yaml_mark_t
+
+	// Reader stuff
+
+	read_handler yaml_read_handler_t // Read handler.
+
+	input_file io.Reader // File input data.
+	input      []byte    // String input data.
+	input_pos  int
+
+	eof bool // EOF flag
+
+	buffer     []byte // The working buffer.
+	buffer_pos int    // The current position of the buffer.
+
+	unread int // The number of unread characters in the buffer.
+
+	raw_buffer     []byte // The raw buffer.
+	raw_buffer_pos int    // The current position of the buffer.
+
+	encoding yaml_encoding_t // The input encoding.
+
+	offset int         // The offset of the current position (in bytes).
+	mark   yaml_mark_t // The mark of the current position.
+
+	// Scanner stuff
+
+	stream_start_produced bool // Have we started to scan the input stream?
+	stream_end_produced   bool // Have we reached the end of the input stream?
+
+	flow_level int // The number of unclosed '[' and '{' indicators.
+
+	tokens          []yaml_token_t // The tokens queue.
+	tokens_head     int            // The head of the tokens queue.
+	tokens_parsed   int            // The number of tokens fetched from the queue.
+	token_available bool           // Does the tokens queue contain a token ready for dequeueing.
+
+	indent  int   // The current indentation level.
+	indents []int // The indentation levels stack.
+
+	simple_key_allowed bool                // May a simple key occur at the current position?
+	simple_keys        []yaml_simple_key_t // The stack of simple keys.
+
+	// Parser stuff
+
+	state          yaml_parser_state_t    // The current parser state.
+	states         []yaml_parser_state_t  // The parser states stack.
+	marks          []yaml_mark_t          // The stack of marks.
+	tag_directives []yaml_tag_directive_t // The list of TAG directives.
+
+	// Dumper stuff
+
+	aliases []yaml_alias_data_t // The alias data.
+
+	document *yaml_document_t // The currently parsed document.
+}
+
+// Emitter Definitions
+
+// The prototype of a write handler.
+//
+// The write handler is called when the emitter needs to flush the accumulated
+// characters to the output.  The handler should write @a size bytes of the
+// @a buffer to the output.
+//
+// @param[in,out]   data        A pointer to an application data specified by
+//                              yaml_emitter_set_output().
+// @param[in]       buffer      The buffer with bytes to be written.
+// @param[in]       size        The size of the buffer.
+//
+// @returns On success, the handler should return @c 1.  If the handler failed,
+// the returned value should be @c 0.
+//
+type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error
+
+type yaml_emitter_state_t int
+
+// The emitter states.
+const (
+	// Expect STREAM-START.
+	yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota
+
+	yaml_EMIT_FIRST_DOCUMENT_START_STATE       // Expect the first DOCUMENT-START or STREAM-END.
+	yaml_EMIT_DOCUMENT_START_STATE             // Expect DOCUMENT-START or STREAM-END.
+	yaml_EMIT_DOCUMENT_CONTENT_STATE           // Expect the content of a document.
+	yaml_EMIT_DOCUMENT_END_STATE               // Expect DOCUMENT-END.
+	yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE   // Expect the first item of a flow sequence.
+	yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE         // Expect an item of a flow sequence.
+	yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE     // Expect the first key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_KEY_STATE           // Expect a key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE  // Expect a value for a simple key of a flow mapping.
+	yaml_EMIT_FLOW_MAPPING_VALUE_STATE         // Expect a value of a flow mapping.
+	yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE  // Expect the first item of a block sequence.
+	yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE        // Expect an item of a block sequence.
+	yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE    // Expect the first key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_KEY_STATE          // Expect the key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping.
+	yaml_EMIT_BLOCK_MAPPING_VALUE_STATE        // Expect a value of a block mapping.
+	yaml_EMIT_END_STATE                        // Expect nothing.
+)
+
+// The emitter structure.
+//
+// All members are internal.  Manage the structure using the @c yaml_emitter_
+// family of functions.
+type yaml_emitter_t struct {
+
+	// Error handling
+
+	error   yaml_error_type_t // Error type.
+	problem string            // Error description.
+
+	// Writer stuff
+
+	write_handler yaml_write_handler_t // Write handler.
+
+	output_buffer *[]byte   // String output data.
+	output_file   io.Writer // File output data.
+
+	buffer     []byte // The working buffer.
+	buffer_pos int    // The current position of the buffer.
+
+	raw_buffer     []byte // The raw buffer.
+	raw_buffer_pos int    // The current position of the buffer.
+
+	encoding yaml_encoding_t // The stream encoding.
+
+	// Emitter stuff
+
+	canonical   bool         // If the output is in the canonical style?
+	best_indent int          // The number of indentation spaces.
+	best_width  int          // The preferred width of the output lines.
+	unicode     bool         // Allow unescaped non-ASCII characters?
+	line_break  yaml_break_t // The preferred line break.
+
+	state  yaml_emitter_state_t   // The current emitter state.
+	states []yaml_emitter_state_t // The stack of states.
+
+	events      []yaml_event_t // The event queue.
+	events_head int            // The head of the event queue.
+
+	indents []int // The stack of indentation levels.
+
+	tag_directives []yaml_tag_directive_t // The list of tag directives.
+
+	indent int // The current indentation level.
+
+	flow_level int // The current flow level.
+
+	root_context       bool // Is it the document root context?
+	sequence_context   bool // Is it a sequence context?
+	mapping_context    bool // Is it a mapping context?
+	simple_key_context bool // Is it a simple mapping key context?
+
+	line       int  // The current line.
+	column     int  // The current column.
+	whitespace bool // If the last character was a whitespace?
+	indention  bool // If the last character was an indentation character (' ', '-', '?', ':')?
+	open_ended bool // If an explicit document end is required?
+
+	// Anchor analysis.
+	anchor_data struct {
+		anchor []byte // The anchor value.
+		alias  bool   // Is it an alias?
+	}
+
+	// Tag analysis.
+	tag_data struct {
+		handle []byte // The tag handle.
+		suffix []byte // The tag suffix.
+	}
+
+	// Scalar analysis.
+	scalar_data struct {
+		value                 []byte              // The scalar value.
+		multiline             bool                // Does the scalar contain line breaks?
+		flow_plain_allowed    bool                // Can the scalar be expessed in the flow plain style?
+		block_plain_allowed   bool                // Can the scalar be expressed in the block plain style?
+		single_quoted_allowed bool                // Can the scalar be expressed in the single quoted style?
+		block_allowed         bool                // Can the scalar be expressed in the literal or folded styles?
+		style                 yaml_scalar_style_t // The output style.
+	}
+
+	// Dumper stuff
+
+	opened bool // If the stream was already opened?
+	closed bool // If the stream was already closed?
+
+	// The information associated with the document nodes.
+	anchors *struct {
+		references int  // The number of references.
+		anchor     int  // The anchor id.
+		serialized bool // If the node has been emitted?
+	}
+
+	last_anchor_id int // The last assigned anchor id.
+
+	document *yaml_document_t // The currently emitted document.
+}

vendor/gopkg.in/yaml.v2/yamlprivateh.go

@@ -0,0 +1,173 @@
+package yaml
+
+const (
+	// The size of the input raw buffer.
+	input_raw_buffer_size = 512
+
+	// The size of the input buffer.
+	// It should be possible to decode the whole raw buffer.
+	input_buffer_size = input_raw_buffer_size * 3
+
+	// The size of the output buffer.
+	output_buffer_size = 128
+
+	// The size of the output raw buffer.
+	// It should be possible to encode the whole output buffer.
+	output_raw_buffer_size = (output_buffer_size*2 + 2)
+
+	// The size of other stacks and queues.
+	initial_stack_size  = 16
+	initial_queue_size  = 16
+	initial_string_size = 16
+)
+
+// Check if the character at the specified position is an alphabetical
+// character, a digit, '_', or '-'.
+func is_alpha(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'Z' || b[i] >= 'a' && b[i] <= 'z' || b[i] == '_' || b[i] == '-'
+}
+
+// Check if the character at the specified position is a digit.
+func is_digit(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9'
+}
+
+// Get the value of a digit.
+func as_digit(b []byte, i int) int {
+	return int(b[i]) - '0'
+}
+
+// Check if the character at the specified position is a hex-digit.
+func is_hex(b []byte, i int) bool {
+	return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'F' || b[i] >= 'a' && b[i] <= 'f'
+}
+
+// Get the value of a hex-digit.
+func as_hex(b []byte, i int) int {
+	bi := b[i]
+	if bi >= 'A' && bi <= 'F' {
+		return int(bi) - 'A' + 10
+	}
+	if bi >= 'a' && bi <= 'f' {
+		return int(bi) - 'a' + 10
+	}
+	return int(bi) - '0'
+}
+
+// Check if the character is ASCII.
+func is_ascii(b []byte, i int) bool {
+	return b[i] <= 0x7F
+}
+
+// Check if the character at the start of the buffer can be printed unescaped.
+func is_printable(b []byte, i int) bool {
+	return ((b[i] == 0x0A) || // . == #x0A
+		(b[i] >= 0x20 && b[i] <= 0x7E) || // #x20 <= . <= #x7E
+		(b[i] == 0xC2 && b[i+1] >= 0xA0) || // #0xA0 <= . <= #xD7FF
+		(b[i] > 0xC2 && b[i] < 0xED) ||
+		(b[i] == 0xED && b[i+1] < 0xA0) ||
+		(b[i] == 0xEE) ||
+		(b[i] == 0xEF && // #xE000 <= . <= #xFFFD
+			!(b[i+1] == 0xBB && b[i+2] == 0xBF) && // && . != #xFEFF
+			!(b[i+1] == 0xBF && (b[i+2] == 0xBE || b[i+2] == 0xBF))))
+}
+
+// Check if the character at the specified position is NUL.
+func is_z(b []byte, i int) bool {
+	return b[i] == 0x00
+}
+
+// Check if the beginning of the buffer is a BOM.
+func is_bom(b []byte, i int) bool {
+	return b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF
+}
+
+// Check if the character at the specified position is space.
+func is_space(b []byte, i int) bool {
+	return b[i] == ' '
+}
+
+// Check if the character at the specified position is tab.
+func is_tab(b []byte, i int) bool {
+	return b[i] == '\t'
+}
+
+// Check if the character at the specified position is blank (space or tab).
+func is_blank(b []byte, i int) bool {
+	//return is_space(b, i) || is_tab(b, i)
+	return b[i] == ' ' || b[i] == '\t'
+}
+
+// Check if the character at the specified position is a line break.
+func is_break(b []byte, i int) bool {
+	return (b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9) // PS (#x2029)
+}
+
+func is_crlf(b []byte, i int) bool {
+	return b[i] == '\r' && b[i+1] == '\n'
+}
+
+// Check if the character is a line break or NUL.
+func is_breakz(b []byte, i int) bool {
+	//return is_break(b, i) || is_z(b, i)
+	return (        // is_break:
+	b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		// is_z:
+		b[i] == 0)
+}
+
+// Check if the character is a line break, space, or NUL.
+func is_spacez(b []byte, i int) bool {
+	//return is_space(b, i) || is_breakz(b, i)
+	return ( // is_space:
+	b[i] == ' ' ||
+		// is_breakz:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		b[i] == 0)
+}
+
+// Check if the character is a line break, space, tab, or NUL.
+func is_blankz(b []byte, i int) bool {
+	//return is_blank(b, i) || is_breakz(b, i)
+	return ( // is_blank:
+	b[i] == ' ' || b[i] == '\t' ||
+		// is_breakz:
+		b[i] == '\r' || // CR (#xD)
+		b[i] == '\n' || // LF (#xA)
+		b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028)
+		b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029)
+		b[i] == 0)
+}
+
+// Determine the width of the character.
+func width(b byte) int {
+	// Don't replace these by a switch without first
+	// confirming that it is being inlined.
+	if b&0x80 == 0x00 {
+		return 1
+	}
+	if b&0xE0 == 0xC0 {
+		return 2
+	}
+	if b&0xF0 == 0xE0 {
+		return 3
+	}
+	if b&0xF8 == 0xF0 {
+		return 4
+	}
+	return 0
+
+}