mirror of
https://gitee.com/energye/energy.git
synced 2024-12-04 20:58:21 +08:00
707 lines
20 KiB
Go
707 lines
20 KiB
Go
//----------------------------------------
|
||
//
|
||
// Copyright © yanghy. All Rights Reserved.
|
||
//
|
||
// Licensed under Apache License Version 2.0, January 2004
|
||
//
|
||
// https://www.apache.org/licenses/LICENSE-2.0
|
||
//
|
||
//----------------------------------------
|
||
|
||
package internal
|
||
|
||
import (
|
||
"archive/tar"
|
||
"archive/zip"
|
||
"bytes"
|
||
"compress/bzip2"
|
||
"encoding/json"
|
||
"fmt"
|
||
progressbar "github.com/energye/energy/v2/cmd/internal/progress-bar"
|
||
"io"
|
||
"io/fs"
|
||
"net/http"
|
||
"net/url"
|
||
"os"
|
||
"path/filepath"
|
||
"runtime"
|
||
"strconv"
|
||
"strings"
|
||
)
|
||
|
||
var CmdInstall = &Command{
|
||
UsageLine: "install -p [path] -v [version] -n [name] -d [download] -c [cef]",
|
||
Short: "Automatically configure the CEF and Energy framework",
|
||
Long: `
|
||
-p Installation directory Default current directory
|
||
-v Specifying a version number,Default latest
|
||
-n Name of the frame after installation
|
||
-d Download Source, 0:gitee or 1:github, Default empty
|
||
-c Install system supports CEF version, provide 4 options, default empty
|
||
default : Automatically select support for the latest version based on the current system.
|
||
109 : CEF 109.1.18 is the last one to support Windows 7.
|
||
106 : CEF 106.1.1 is the last default support for GTK2 in Linux.
|
||
87 : CEF 87.1.14 is the last one to support Flash.
|
||
. Execute default command
|
||
|
||
Automatically configure the CEF and Energy framework.
|
||
|
||
During this process, CEF and Energy are downloaded.
|
||
|
||
Default framework name is "EnergyFramework".
|
||
`,
|
||
}
|
||
|
||
type downloadInfo struct {
|
||
fileName string
|
||
frameworkPath string
|
||
downloadPath string
|
||
url string
|
||
success bool
|
||
isSupport bool
|
||
}
|
||
|
||
func init() {
|
||
CmdInstall.Run = runInstall
|
||
}
|
||
|
||
const (
|
||
GTK3 = iota + 1
|
||
GTK2
|
||
)
|
||
|
||
// https://cef-builds.spotifycdn.com/cef_binary_107.1.11%2Bg26c0b5e%2Bchromium-107.0.5304.110_windows64.tar.bz2
|
||
// 运行安装
|
||
func runInstall(c *CommandConfig) error {
|
||
// 获取提取文件配置
|
||
extractData, err := httpRequestGET(DownloadExtractURL)
|
||
if err != nil {
|
||
fmt.Fprint(os.Stderr, err.Error(), "\n")
|
||
os.Exit(1)
|
||
}
|
||
var extractConfig map[string]any
|
||
extractData = bytes.TrimPrefix(extractData, []byte("\xef\xbb\xbf"))
|
||
if err := json.Unmarshal(extractData, &extractConfig); err != nil {
|
||
fmt.Fprint(os.Stderr, err.Error(), "\n")
|
||
os.Exit(1)
|
||
}
|
||
extractOSConfig := extractConfig[runtime.GOOS].(map[string]any)
|
||
|
||
// 获取安装版本配置
|
||
downloadJSON, err := httpRequestGET(DownloadVersionURL)
|
||
if err != nil {
|
||
fmt.Fprint(os.Stderr, err.Error()+"\n")
|
||
os.Exit(1)
|
||
}
|
||
var edv map[string]any
|
||
downloadJSON = bytes.TrimPrefix(downloadJSON, []byte("\xef\xbb\xbf"))
|
||
if err := json.Unmarshal(downloadJSON, &edv); err != nil {
|
||
fmt.Fprint(os.Stderr, err.Error()+"\n")
|
||
os.Exit(1)
|
||
}
|
||
|
||
// -c cef args value
|
||
// default(empty), windows7, gtk2, flash
|
||
cef := strings.ToLower(c.Install.CEF)
|
||
if cef != CefEmpty && cef != Cef109 && cef != Cef106 && cef != Cef87 {
|
||
fmt.Fprint(os.Stderr, "-c [cef] Incorrect args value\n")
|
||
os.Exit(1)
|
||
}
|
||
|
||
if c.Install.Path == "" {
|
||
// current dir
|
||
c.Install.Path = c.Wd
|
||
}
|
||
installPathName := filepath.Join(c.Install.Path, c.Install.Name)
|
||
println("Install Path", installPathName)
|
||
if c.Install.Version == "" {
|
||
// latest
|
||
c.Install.Version = "latest"
|
||
}
|
||
// 创建安装目录
|
||
os.MkdirAll(c.Install.Path, fs.ModePerm)
|
||
os.MkdirAll(installPathName, fs.ModePerm)
|
||
os.MkdirAll(filepath.Join(c.Install.Path, frameworkCache), fs.ModePerm)
|
||
println("Start downloading CEF and Energy dependency")
|
||
// 所有版本列表
|
||
var versionList = edv["versionList"].(map[string]any)
|
||
|
||
// 当前安装版本
|
||
var installVersion map[string]any
|
||
if c.Install.Version == "latest" {
|
||
// 默认最新版本
|
||
if v, ok := versionList[edv["latest"].(string)]; ok {
|
||
installVersion = v.(map[string]any)
|
||
}
|
||
} else {
|
||
// 自己选择版本
|
||
if v, ok := versionList[c.Install.Version]; ok {
|
||
installVersion = v.(map[string]any)
|
||
}
|
||
}
|
||
println("Check version")
|
||
if installVersion == nil || len(installVersion) == 0 {
|
||
println("Invalid version number:", c.Install.Version)
|
||
os.Exit(1)
|
||
}
|
||
// 当前版本 cef 和 liblcl 版本选择
|
||
var (
|
||
cefModuleName, liblclModuleName string
|
||
)
|
||
// 使用提供的特定版本号
|
||
if cef == Cef106 {
|
||
cefModuleName = "cef-106" // CEF 106.1.1
|
||
} else if cef == Cef109 {
|
||
cefModuleName = "cef-109" // CEF 109.1.18
|
||
} else if cef == Cef87 {
|
||
// cef 87 要和 liblcl 87 配对
|
||
cefModuleName = "cef-87" // CEF 87.1.14
|
||
liblclModuleName = "liblcl-87" // liblcl 87
|
||
}
|
||
// 如未指定CEF参数、或参数不正确，选择当前CEF模块最（新）大的版本号
|
||
if cefModuleName == "" {
|
||
var cefDefault string
|
||
var number int
|
||
for module, _ := range installVersion {
|
||
if strings.Index(module, "cef") == 0 {
|
||
if s := strings.Split(module, "-"); len(s) == 2 {
|
||
// module = "cef-xxx"
|
||
n, _ := strconv.Atoi(s[1])
|
||
if n >= number {
|
||
number = n
|
||
cefDefault = module
|
||
}
|
||
} else {
|
||
// module = "cef"
|
||
cefDefault = module
|
||
break
|
||
}
|
||
}
|
||
}
|
||
cefModuleName = cefDefault
|
||
}
|
||
// liblcl, 在未指定flash版本时，它是空 ""
|
||
if liblclModuleName == "" {
|
||
liblclModuleName = "liblcl"
|
||
}
|
||
// 当前安装版本的所有模块
|
||
var modules map[string]any
|
||
if m, ok := installVersion["modules"]; ok {
|
||
modules = m.(map[string]any)
|
||
}
|
||
// 根据模块名拿到对应的模块配置
|
||
var (
|
||
cefModule, liblclModule map[string]any
|
||
)
|
||
if module, ok := modules[cefModuleName]; ok {
|
||
cefModule = module.(map[string]any)
|
||
}
|
||
if module, ok := modules[liblclModuleName]; ok {
|
||
liblclModule = module.(map[string]any)
|
||
}
|
||
if cefModule == nil {
|
||
println("error: cef module", cefModuleName, "is not configured in the current version")
|
||
os.Exit(1)
|
||
}
|
||
// 下载源选择
|
||
var replaceSource = func(url, source string, sourceSelect int, module string) string {
|
||
s := strings.Split(source, ",")
|
||
// liblcl 如果自己选择下载源
|
||
if module == "liblcl" && c.Install.Download != "" {
|
||
sourceSelect = ToInt(c.Install.Download)
|
||
}
|
||
if len(s) > sourceSelect {
|
||
return strings.ReplaceAll(url, "{source}", s[sourceSelect])
|
||
}
|
||
return url
|
||
}
|
||
// 下载集合
|
||
var downloads = make(map[string]*downloadInfo)
|
||
// 根据模块名拿到版本号
|
||
cefVersion := ToRNilString(installVersion[cefModuleName], "")
|
||
// 当前模块版本支持系统，如果支持返回下载地址
|
||
libCEFOS, isSupport := cefOS(cefModule)
|
||
downloadCefURL := ToString(cefModule["downloadUrl"])
|
||
downloadCefURL = replaceSource(downloadCefURL, ToString(cefModule["downloadSource"]), ToInt(cefModule["downloadSourceSelect"]), "cef")
|
||
downloadCefURL = strings.ReplaceAll(downloadCefURL, "{version}", cefVersion)
|
||
downloadCefURL = strings.ReplaceAll(downloadCefURL, "{OSARCH}", libCEFOS)
|
||
downloads[cefKey] = &downloadInfo{isSupport: isSupport, fileName: urlName(downloadCefURL), downloadPath: filepath.Join(c.Install.Path, frameworkCache, urlName(downloadCefURL)), frameworkPath: installPathName, url: downloadCefURL}
|
||
|
||
// liblcl
|
||
// 如果选定的cef 106，在linux会指定liblcl gtk2 版本, 其它系统和版本以默认的形式区分
|
||
// 最后根据模块名称来确定使用哪个liblcl
|
||
liblclVersion := ToRNilString(installVersion[liblclModuleName], "")
|
||
if liblclModule != nil {
|
||
libEnergyOS, isSupport := liblclOS(cef, liblclVersion, liblclModule)
|
||
downloadEnergyURL := ToString(liblclModule["downloadUrl"])
|
||
downloadEnergyURL = replaceSource(downloadEnergyURL, ToString(liblclModule["downloadSource"]), ToInt(liblclModule["downloadSourceSelect"]), "liblcl")
|
||
module := ToString(liblclModule["module"])
|
||
downloadEnergyURL = strings.ReplaceAll(downloadEnergyURL, "{version}", liblclVersion)
|
||
downloadEnergyURL = strings.ReplaceAll(downloadEnergyURL, "{module}", module)
|
||
downloadEnergyURL = strings.ReplaceAll(downloadEnergyURL, "{OSARCH}", libEnergyOS)
|
||
downloads[liblclKey] = &downloadInfo{isSupport: isSupport, fileName: urlName(downloadEnergyURL), downloadPath: filepath.Join(c.Install.Path, frameworkCache, urlName(downloadEnergyURL)), frameworkPath: installPathName, url: downloadEnergyURL}
|
||
}
|
||
|
||
// 在线下载框架二进制包
|
||
for key, dl := range downloads {
|
||
fmt.Printf("Download %s: %s\n", key, dl.url)
|
||
if !dl.isSupport {
|
||
println("module is not built or configured 【", dl.fileName, "]")
|
||
continue
|
||
}
|
||
bar := progressbar.NewBar(100)
|
||
bar.SetNotice("\t")
|
||
bar.HideRatio()
|
||
err = downloadFile(dl.url, dl.downloadPath, func(totalLength, processLength int64) {
|
||
bar.PrintBar(int((float64(processLength) / float64(totalLength)) * 100))
|
||
})
|
||
bar.PrintEnd("Download [" + dl.fileName + "] success")
|
||
if err != nil {
|
||
println("Download [", dl.fileName, "] error", err)
|
||
}
|
||
dl.success = err == nil
|
||
}
|
||
// 解压文件, 并根据配置提取文件
|
||
println("Unpack files")
|
||
var removeFileList = make([]string, 0, 0)
|
||
for key, di := range downloads {
|
||
if !di.isSupport {
|
||
println("energy command line does not support the system architecture.")
|
||
continue
|
||
}
|
||
if di.success {
|
||
if key == cefKey {
|
||
bar := progressbar.NewBar(0)
|
||
bar.SetNotice("Unpack file " + key + ": ")
|
||
tarName := UnBz2ToTar(di.downloadPath, func(totalLength, processLength int64) {
|
||
bar.PrintSizeBar(processLength)
|
||
})
|
||
bar.PrintEnd()
|
||
ExtractFiles(key, tarName, di, extractOSConfig)
|
||
removeFileList = append(removeFileList, tarName)
|
||
} else if key == liblclKey {
|
||
ExtractFiles(key, di.downloadPath, di, extractOSConfig)
|
||
}
|
||
println("Unpack file", key, "success\n")
|
||
}
|
||
}
|
||
for _, rmFile := range removeFileList {
|
||
println("Remove file", rmFile)
|
||
os.Remove(rmFile)
|
||
}
|
||
setEnergyHomeEnv(EnergyHomeKey, installPathName)
|
||
println()
|
||
println(CmdInstall.Short, "SUCCESS \nInstalled version:", c.Install.Version, liblclVersion)
|
||
if liblclModule == nil {
|
||
println("hint: liblcl module", liblclModuleName, `is not configured in the current version, You need to use built-in binary build. [go build -tags="tempdll"]`)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func cefOS(module map[string]any) (string, bool) {
|
||
buildSupportOSArch := ToString(module["buildSupportOSArch"])
|
||
mod := ToString(module["module"])
|
||
archs := strings.Split(buildSupportOSArch, ",")
|
||
var isSupport = func(goarch string) bool {
|
||
for _, v := range archs {
|
||
if goarch == v {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
if isWindows { // windows arm for 64 bit, windows for 32/64 bit
|
||
if runtime.GOARCH == "arm64" {
|
||
return "windowsarm64", isSupport(WindowsARM64)
|
||
}
|
||
if strconv.IntSize == 32 {
|
||
return fmt.Sprintf("windows%d", strconv.IntSize), isSupport(Windows32)
|
||
}
|
||
return fmt.Sprintf("windows%d", strconv.IntSize), isSupport(Windows64)
|
||
} else if isLinux { //linux for 64 bit
|
||
if runtime.GOARCH == "arm64" {
|
||
if mod == Cef106 {
|
||
return "linuxarm64", isSupport(LinuxARM64GTK2)
|
||
}
|
||
return "linuxarm64", isSupport(LinuxARM64) || isSupport(LinuxARM64GTK3)
|
||
} else if runtime.GOARCH == "amd64" {
|
||
if mod == Cef106 {
|
||
return "linux64", isSupport(Linux64GTK2)
|
||
}
|
||
return "linux64", isSupport(Linux64) || isSupport(Linux64GTK3)
|
||
}
|
||
} else if isDarwin { // macosx for 64 bit
|
||
if runtime.GOARCH == "arm64" {
|
||
return "macosarm64", isSupport(MacOSARM64)
|
||
} else if runtime.GOARCH == "amd64" {
|
||
return "macosx64", isSupport(MacOSX64)
|
||
}
|
||
}
|
||
//not support
|
||
return fmt.Sprintf("%v %v", runtime.GOOS, runtime.GOARCH), false
|
||
}
|
||
|
||
var liblclFileNames = map[string]string{
|
||
"windows32": Windows32,
|
||
"windows64": Windows64,
|
||
"windowsarm64": WindowsARM64,
|
||
"linuxarm64": LinuxARM64,
|
||
"linuxarm64gtk2": LinuxARM64GTK2,
|
||
"linux64": Linux64,
|
||
"linux64gtk2": Linux64GTK2,
|
||
"darwin64": MacOSX64,
|
||
"darwinarm64": MacOSARM64,
|
||
"windows32_old": "Windows 32 bits",
|
||
"windows64_old": "Windows 64 bits",
|
||
"linux64gtk2_old": "Linux GTK2 x86 64 bits",
|
||
"linux64_old": "Linux x86 64 bits",
|
||
"darwin64_old": "MacOSX x86 64 bits",
|
||
}
|
||
|
||
func liblclName(version, cef string) (string, bool) {
|
||
var key string
|
||
var isOld bool
|
||
if runtime.GOARCH == "arm64" {
|
||
if isLinux && cef == Cef106 { // 只linux区别liblcl gtk2
|
||
key = "linuxarm64gtk2"
|
||
} else {
|
||
key = fmt.Sprintf("%sarm64", runtime.GOOS)
|
||
}
|
||
} else if runtime.GOARCH == "amd64" {
|
||
if isLinux && cef == Cef106 { // 只linux区别liblcl gtk2
|
||
key = "linux64gtk2"
|
||
} else {
|
||
key = fmt.Sprintf("%s%d", runtime.GOOS, strconv.IntSize)
|
||
}
|
||
}
|
||
if Compare("2.2.4", version) {
|
||
if key != "" {
|
||
key += "_old"
|
||
isOld = true
|
||
}
|
||
}
|
||
if key != "" {
|
||
return liblclFileNames[key], isOld
|
||
}
|
||
return "", false
|
||
}
|
||
|
||
// 命名规则 OS+[ARCH]+BIT+[GTK2]
|
||
// ARCH: 非必需, ARM 时填写, AMD为空
|
||
// GTK2: 非必需, GTK2(Linux CEF 106) 时填写, 非Linux或GTK3时为空
|
||
func liblclOS(cef, version string, module map[string]any) (string, bool) {
|
||
buildSupportOSArch := ToString(module["buildSupportOSArch"])
|
||
archs := strings.Split(buildSupportOSArch, ",")
|
||
noSuport := fmt.Sprintf("%v %v", runtime.GOOS, runtime.GOARCH)
|
||
var isSupport = func(goarch string) bool {
|
||
for _, v := range archs {
|
||
if goarch == v {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
if name, isOld := liblclName(version, cef); isOld {
|
||
if name == "" {
|
||
return noSuport, false
|
||
}
|
||
return name, true
|
||
} else {
|
||
return name, isSupport(name)
|
||
}
|
||
}
|
||
|
||
// 提取文件
|
||
func ExtractFiles(keyName, sourcePath string, di *downloadInfo, extractOSConfig map[string]any) {
|
||
println("Extract", keyName, "sourcePath:", sourcePath, "targetPath:", di.frameworkPath)
|
||
files := extractOSConfig[keyName].([]any)
|
||
if keyName == cefKey {
|
||
//tar
|
||
ExtractUnTar(sourcePath, di.frameworkPath, files...)
|
||
} else if keyName == liblclKey {
|
||
//zip
|
||
ExtractUnZip(sourcePath, di.frameworkPath, files...)
|
||
}
|
||
}
|
||
|
||
func filePathInclude(compressPath string, files ...any) (string, bool) {
|
||
for _, file := range files {
|
||
f := file.(string)
|
||
tIdx := strings.LastIndex(f, "/*")
|
||
if tIdx != -1 {
|
||
f = f[:tIdx]
|
||
if f[0] == '/' {
|
||
if strings.Index(compressPath, f[1:]) == 0 {
|
||
return compressPath, true
|
||
}
|
||
}
|
||
if strings.Index(compressPath, f) == 0 {
|
||
return strings.Replace(compressPath, f, "", 1), true
|
||
}
|
||
} else {
|
||
if f[0] == '/' {
|
||
if compressPath == f[1:] {
|
||
return f, true
|
||
}
|
||
}
|
||
if compressPath == f {
|
||
f = f[strings.Index(f, "/")+1:]
|
||
return f, true
|
||
}
|
||
}
|
||
}
|
||
return "", false
|
||
}
|
||
|
||
func dir(path string) string {
|
||
path = strings.ReplaceAll(path, "\\", string(filepath.Separator))
|
||
lastSep := strings.LastIndex(path, string(filepath.Separator))
|
||
return path[:lastSep]
|
||
}
|
||
|
||
func ExtractUnTar(filePath, targetPath string, files ...any) {
|
||
reader, err := os.Open(filePath)
|
||
if err != nil {
|
||
fmt.Printf("error: cannot read tar file, error=[%v]\n", err)
|
||
return
|
||
}
|
||
defer reader.Close()
|
||
|
||
tarReader := tar.NewReader(reader)
|
||
for {
|
||
header, err := tarReader.Next()
|
||
if err == io.EOF {
|
||
break
|
||
} else if err != nil {
|
||
fmt.Printf("error: cannot read tar file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return
|
||
}
|
||
compressPath := header.Name[strings.Index(header.Name, "/")+1:]
|
||
includePath, isInclude := filePathInclude(compressPath, files...)
|
||
if !isInclude {
|
||
continue
|
||
}
|
||
info := header.FileInfo()
|
||
targetFile := filepath.Join(targetPath, includePath)
|
||
fmt.Println("compressPath:", compressPath, "-> targetFile:", targetFile)
|
||
if info.IsDir() {
|
||
if err = os.MkdirAll(targetFile, info.Mode()); err != nil {
|
||
fmt.Printf("error: cannot mkdir file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return
|
||
}
|
||
} else {
|
||
fDir := dir(targetFile)
|
||
_, err = os.Stat(fDir)
|
||
if os.IsNotExist(err) {
|
||
if err = os.MkdirAll(fDir, info.Mode()); err != nil {
|
||
fmt.Printf("error: cannot file mkdir file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return
|
||
}
|
||
}
|
||
file, err := os.OpenFile(targetFile, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, info.Mode())
|
||
if err != nil {
|
||
fmt.Printf("error: cannot open file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return
|
||
}
|
||
defer file.Close()
|
||
bar := progressbar.NewBar(100)
|
||
bar.SetNotice("\t")
|
||
bar.HideRatio()
|
||
writeFile(tarReader, file, header.Size, func(totalLength, processLength int64) {
|
||
bar.PrintBar(int((float64(processLength) / float64(totalLength)) * 100))
|
||
})
|
||
file.Sync()
|
||
bar.PrintBar(100)
|
||
bar.PrintEnd()
|
||
if err != nil {
|
||
fmt.Printf("error: cannot write file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
func ExtractUnZip(filePath, targetPath string, files ...any) {
|
||
if rc, err := zip.OpenReader(filePath); err == nil {
|
||
defer rc.Close()
|
||
for i := 0; i < len(files); i++ {
|
||
if f, err := rc.Open(files[i].(string)); err == nil {
|
||
defer f.Close()
|
||
st, _ := f.Stat()
|
||
targetFileName := filepath.Join(targetPath, st.Name())
|
||
if st.IsDir() {
|
||
os.MkdirAll(targetFileName, st.Mode())
|
||
continue
|
||
}
|
||
if targetFile, err := os.Create(targetFileName); err == nil {
|
||
fmt.Println("extract file: ", st.Name())
|
||
bar := progressbar.NewBar(100)
|
||
bar.SetNotice("\t")
|
||
bar.HideRatio()
|
||
writeFile(f, targetFile, st.Size(), func(totalLength, processLength int64) {
|
||
bar.PrintBar(int((float64(processLength) / float64(totalLength)) * 100))
|
||
})
|
||
bar.PrintBar(100)
|
||
bar.PrintEnd()
|
||
targetFile.Close()
|
||
}
|
||
} else {
|
||
fmt.Printf("error: cannot open file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return
|
||
}
|
||
}
|
||
} else {
|
||
if err != nil {
|
||
fmt.Printf("error: cannot read zip file, error=[%v]\n", err)
|
||
os.Exit(1)
|
||
}
|
||
}
|
||
}
|
||
|
||
// 释放bz2文件到tar
|
||
func UnBz2ToTar(name string, callback func(totalLength, processLength int64)) string {
|
||
fileBz2, err := os.Open(name)
|
||
if err != nil {
|
||
fmt.Errorf("%s", err.Error())
|
||
os.Exit(1)
|
||
}
|
||
defer fileBz2.Close()
|
||
dirName := fileBz2.Name()
|
||
dirName = dirName[:strings.LastIndex(dirName, ".")]
|
||
r := bzip2.NewReader(fileBz2)
|
||
w, err := os.Create(dirName)
|
||
if err != nil {
|
||
fmt.Errorf("%s", err.Error())
|
||
os.Exit(1)
|
||
}
|
||
defer w.Close()
|
||
writeFile(r, w, 0, callback)
|
||
return dirName
|
||
}
|
||
|
||
func writeFile(r io.Reader, w *os.File, totalLength int64, callback func(totalLength, processLength int64)) {
|
||
buf := make([]byte, 1024*10)
|
||
var written int64
|
||
for {
|
||
nr, err := r.Read(buf)
|
||
if nr > 0 {
|
||
nw, err := w.Write(buf[0:nr])
|
||
if nw > 0 {
|
||
written += int64(nw)
|
||
}
|
||
callback(totalLength, written)
|
||
if err != nil {
|
||
break
|
||
}
|
||
if nr != nw {
|
||
err = io.ErrShortWrite
|
||
break
|
||
}
|
||
}
|
||
if err != nil {
|
||
break
|
||
}
|
||
}
|
||
}
|
||
|
||
// url文件名
|
||
func urlName(downloadUrl string) string {
|
||
if u, err := url.QueryUnescape(downloadUrl); err != nil {
|
||
return ""
|
||
} else {
|
||
u = u[strings.LastIndex(u, "/")+1:]
|
||
return u
|
||
}
|
||
}
|
||
|
||
func isFileExist(filename string, filesize int64) bool {
|
||
info, err := os.Stat(filename)
|
||
if os.IsNotExist(err) {
|
||
return false
|
||
}
|
||
if filesize == info.Size() {
|
||
return true
|
||
}
|
||
os.Remove(filename)
|
||
return false
|
||
}
|
||
|
||
// 下载文件
|
||
func downloadFile(url string, localPath string, callback func(totalLength, processLength int64)) error {
|
||
var (
|
||
fsize int64
|
||
buf = make([]byte, 1024*10)
|
||
written int64
|
||
)
|
||
tmpFilePath := localPath + ".download"
|
||
client := new(http.Client)
|
||
resp, err := client.Get(url)
|
||
if err != nil {
|
||
fmt.Printf("download-error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return err
|
||
}
|
||
fsize, err = strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 32)
|
||
if err != nil {
|
||
fmt.Printf("download-error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return err
|
||
}
|
||
if isFileExist(localPath, fsize) {
|
||
println("File already exists")
|
||
return nil
|
||
}
|
||
println("Save path: [", localPath, "] file size:", fsize)
|
||
file, err := os.Create(tmpFilePath)
|
||
if err != nil {
|
||
fmt.Printf("download-error=[%v]\n", err)
|
||
os.Exit(1)
|
||
return err
|
||
}
|
||
defer file.Close()
|
||
if resp.Body == nil {
|
||
fmt.Printf("Download-error=[body is null]\n")
|
||
os.Exit(1)
|
||
return nil
|
||
}
|
||
defer resp.Body.Close()
|
||
for {
|
||
nr, er := resp.Body.Read(buf)
|
||
if nr > 0 {
|
||
nw, err := file.Write(buf[0:nr])
|
||
if nw > 0 {
|
||
written += int64(nw)
|
||
}
|
||
callback(fsize, written)
|
||
if err != nil {
|
||
break
|
||
}
|
||
if nr != nw {
|
||
err = io.ErrShortWrite
|
||
break
|
||
}
|
||
}
|
||
if er != nil {
|
||
if er != io.EOF {
|
||
err = er
|
||
}
|
||
break
|
||
}
|
||
}
|
||
if err == nil {
|
||
file.Sync()
|
||
file.Close()
|
||
err = os.Rename(tmpFilePath, localPath)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
}
|
||
return err
|
||
}
|