mirror of
https://gitee.com/rainbond/Rainbond.git
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108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
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// RAINBOND, Application Management Platform
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// Copyright (C) 2014-2017 Goodrain Co., Ltd.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package utils
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"regexp"
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)
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var (
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extendTag = "@extend:"
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pwdTag = "@pwd@"
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rootTag = "@root@"
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root = ""
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)
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// 设置扩展标识，如果不设置，默认为 '@extend:'
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func SetExtendTag(tag string) {
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extendTag = tag
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}
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func SetRoot(r string) {
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root = r
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}
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// 设置当前路径标识，如果不设置，默认为 '@pwd@'
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// @pwd@ 会被替换成当前文件的路径，
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// 至于是绝对路径还是相对路径，取决于读取文件时，传入的是绝对路径还是相对路径
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func SetPathTag(tag string) {
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pwdTag = tag
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}
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//加载json（可配置扩展字段）配置文件
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func LoadExtendConf(filePath string, v interface{}) error {
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data, err := extendFile(filePath)
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if err != nil {
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return err
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}
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err = json.Unmarshal(data, v)
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return err
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}
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func extendFile(filePath string) (data []byte, err error) {
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fi, err := os.Stat(filePath)
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if err != nil {
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return
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}
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if fi.IsDir() {
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err = fmt.Errorf(filePath + " is not a file.")
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return
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}
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b, err := ioutil.ReadFile(filePath)
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if err != nil {
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return
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}
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if len(root) != 0 {
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b = bytes.Replace(b, []byte(rootTag), []byte(root), -1)
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}
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dir := filepath.Dir(filePath)
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return extendFileContent(dir, bytes.Replace(b, []byte(pwdTag), []byte(dir), -1))
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}
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func extendFileContent(dir string, content []byte) (data []byte, err error) {
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//检查是不是规范的json
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test := new(interface{})
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err = json.Unmarshal(content, &test)
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if err != nil {
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return
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}
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// 替换子json文件
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reg := regexp.MustCompile(`"` + extendTag + `.*?"`)
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data = reg.ReplaceAllFunc(content, func(match []byte) []byte {
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match = match[len(extendTag)+1 : len(match)-1]
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sb, e := extendFile(filepath.Join(dir, string(match)))
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if e != nil {
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err = fmt.Errorf("替换json配置[%s]失败：%s\n", match, e.Error())
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}
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return sb
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})
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return
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}
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