goploy/internal/pkg/recorder.go
2022-11-23 10:30:02 +08:00

112 lines
2.2 KiB
Go

// Copyright 2022 The Goploy Authors. All rights reserved.
// Use of this source code is governed by a GPLv3-style
// license that can be found in the LICENSE file.
package pkg
import (
"encoding/json"
"os"
"path"
"time"
)
type Env struct {
Shell string `json:"SHELL"`
Term string `json:"TERM"`
}
type Header struct {
Title string `json:"title"`
Version int `json:"version"`
Height int `json:"height"`
Width int `json:"width"`
Env Env `json:"env"`
Timestamp int `json:"Timestamp"`
}
type Recorder struct {
File *os.File
Timestamp int
}
func (recorder *Recorder) Close() {
if recorder.File != nil {
_ = recorder.File.Close()
}
}
func (recorder *Recorder) WriteHeader(header *Header) (err error) {
var p []byte
if p, err = json.Marshal(header); err != nil {
return
}
if _, err := recorder.File.Write(p); err != nil {
return err
}
if _, err := recorder.File.Write([]byte("\n")); err != nil {
return err
}
recorder.Timestamp = header.Timestamp
return
}
func (recorder *Recorder) WriteData(data string) (err error) {
now := int(time.Now().UnixNano())
delta := float64(now-recorder.Timestamp*1000*1000*1000) / 1000 / 1000 / 1000
row := make([]interface{}, 0)
row = append(row, delta)
row = append(row, "o")
row = append(row, data)
var s []byte
if s, err = json.Marshal(row); err != nil {
return
}
if _, err := recorder.File.Write(s); err != nil {
return err
}
if _, err := recorder.File.Write([]byte("\n")); err != nil {
return err
}
return
}
func NewRecorder(recordingPath, term string, h int, w int) (recorder *Recorder, err error) {
recorder = &Recorder{}
if _, err := os.Stat(path.Dir(recordingPath)); err != nil {
if err := os.MkdirAll(path.Dir(recordingPath), os.ModePerm); err != nil {
return recorder, err
}
}
file, err := os.Create(recordingPath)
if err != nil {
return nil, err
}
recorder.File = file
header := &Header{
Title: "",
Version: 2,
Height: h,
Width: w,
Env: Env{Shell: "/bin/bash", Term: term},
Timestamp: int(time.Now().Unix()),
}
if err := recorder.WriteHeader(header); err != nil {
return nil, err
}
return recorder, nil
}