254 lines
5.2 KiB
Go
254 lines
5.2 KiB
Go
package util
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import (
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"fmt"
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"go/build"
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"io"
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"io/ioutil"
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"os"
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"os/user"
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"path/filepath"
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"strings"
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"tank/code/tool/result"
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)
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//判断文件或文件夹是否已经存在
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func PathExists(path string) (bool, error) {
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_, err := os.Stat(path)
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if err == nil {
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return true, nil
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}
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if os.IsNotExist(err) {
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return false, nil
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}
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return false, err
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}
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//获取GOPATH路径
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func GetGoPath() string {
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return build.Default.GOPATH
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}
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//获取该应用可执行文件的位置。
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//例如:C:\Users\lishuang\AppData\Local\Temp
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func GetHomePath() string {
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ex, err := os.Executable()
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if err != nil {
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panic(err)
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}
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exPath := filepath.Dir(ex)
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//如果exPath中包含了 /private/var/folders 我们认为是在Mac的开发环境中
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macDev := strings.HasPrefix(exPath, "/private/var/folders")
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if macDev {
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exPath = GetGoPath() + "/src/tank/tmp"
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}
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//如果exPath中包含了 \\AppData\\Local\\Temp 我们认为是在Win的开发环境中
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systemUser, err := user.Current()
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winDev := strings.HasPrefix(exPath, systemUser.HomeDir+"\\AppData\\Local\\Temp")
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if winDev {
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exPath = GetGoPath() + "/src/tank/tmp"
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}
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return exPath
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}
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//获取前端静态资源的位置。如果你在开发模式下,可以将这里直接返回tank/build下面的html路径。
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//例如:C:/Users/lishuang/AppData/Local/Temp/html
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func GetHtmlPath() string {
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homePath := GetHomePath()
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filePath := homePath + "/html"
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exists, err := PathExists(filePath)
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if err != nil {
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panic("判断上传文件是否存在时出错!")
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}
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if !exists {
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err = os.MkdirAll(filePath, 0777)
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if err != nil {
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panic("创建上传文件夹时出错!")
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}
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}
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return filePath
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}
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//如果文件夹存在就不管,不存在就创建。 例如:/var/www/matter
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func MakeDirAll(dirPath string) string {
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exists, err := PathExists(dirPath)
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if err != nil {
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panic("判断文件是否存在时出错!")
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}
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if !exists {
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//TODO:文件权限需要进一步考虑
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err = os.MkdirAll(dirPath, 0777)
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if err != nil {
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panic("创建文件夹时出错!")
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}
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}
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return dirPath
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}
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//获取到一个Path的文件夹路径,eg /var/www/xx.log -> /var/www
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func GetDirOfPath(fullPath string) string {
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index1 := strings.LastIndex(fullPath, "/")
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//可能是windows的环境
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index2 := strings.LastIndex(fullPath, "\\")
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index := index1
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if index2 > index1 {
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index = index2
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}
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return fullPath[:index]
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}
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//获取到一个Path 中的文件名,eg /var/www/xx.log -> xx.log
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func GetFilenameOfPath(fullPath string) string {
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index1 := strings.LastIndex(fullPath, "/")
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//可能是windows的环境
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index2 := strings.LastIndex(fullPath, "\\")
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index := index1
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if index2 > index1 {
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index = index2
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}
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return fullPath[index+1:]
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}
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//尝试删除空文件夹 true表示删掉了一个空文件夹,false表示没有删掉任何东西
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func DeleteEmptyDir(dirPath string) bool {
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dir, err := ioutil.ReadDir(dirPath)
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if err != nil {
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panic(result.BadRequest("尝试读取目录%s时出错 %s", dirPath, err.Error()))
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}
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if len(dir) == 0 {
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//空文件夹
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err = os.Remove(dirPath)
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if err != nil {
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panic(result.BadRequest("删除磁盘上的文件夹%s出错 %s", dirPath, err.Error()))
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}
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return true
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}
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return false
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}
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//递归尝试删除空文件夹,一直空就一直删,直到不空为止
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func DeleteEmptyDirRecursive(dirPath string) {
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fmt.Printf("递归删除删 %v \n", dirPath)
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tmpPath := dirPath
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for DeleteEmptyDir(tmpPath) {
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dir := GetDirOfPath(tmpPath)
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fmt.Printf("尝试删除 %v\n", dir)
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tmpPath = dir
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}
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}
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//移除某个文件夹。 例如:/var/www/matter => /var/www
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func RemoveDirectory(dirPath string) string {
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exists, err := PathExists(dirPath)
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if err != nil {
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panic("判断文件是否存在时出错!")
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}
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if exists {
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err = os.Remove(dirPath)
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if err != nil {
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panic("删除文件夹时出错!")
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}
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}
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return dirPath
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}
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//获取配置文件存放的位置
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//例如:C:\Users\lishuang\AppData\Local\Temp/conf
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func GetConfPath() string {
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homePath := GetHomePath()
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filePath := homePath + "/conf"
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exists, err := PathExists(filePath)
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if err != nil {
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panic("判断日志文件夹是否存在时出错!")
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}
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if !exists {
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err = os.MkdirAll(filePath, 0777)
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if err != nil {
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panic("创建日志文件夹时出错!")
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}
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}
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return filePath
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}
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//获取日志的路径
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//例如:默认存放于 home/log
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func GetLogPath() string {
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homePath := GetHomePath()
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filePath := homePath + "/log"
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exists, err := PathExists(filePath)
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if err != nil {
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panic("判断日志文件夹是否存在时出错!")
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}
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if !exists {
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err = os.MkdirAll(filePath, 0777)
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if err != nil {
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panic("创建日志文件夹时出错!")
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}
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}
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return filePath
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}
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//复制文件
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func CopyFile(srcPath string, destPath string) (nBytes int64) {
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srcFileStat, err := os.Stat(srcPath)
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if err != nil {
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panic(err)
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}
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if !srcFileStat.Mode().IsRegular() {
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panic(fmt.Errorf("%s is not a regular file", srcPath))
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}
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srcFile, err := os.Open(srcPath)
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if err != nil {
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panic(err)
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}
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defer func() {
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err = srcFile.Close()
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if err != nil {
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panic(err)
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}
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}()
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destFile, err := os.Create(destPath)
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if err != nil {
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panic(err)
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}
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defer func() {
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err = destFile.Close()
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if err != nil {
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panic(err)
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}
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}()
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nBytes, err = io.Copy(destFile, srcFile)
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return nBytes
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}
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