2017-12-29 16:03:30 +08:00
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// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://gitee.com/johng/gf.
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2018-03-29 13:46:05 +08:00
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// 文件管理.
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2017-11-23 10:21:28 +08:00
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package gfile
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import (
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"bytes"
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"errors"
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2018-10-22 13:19:06 +08:00
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"fmt"
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2018-05-03 16:12:01 +08:00
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"gitee.com/johng/gf/g/container/gtype"
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2018-09-15 16:40:13 +08:00
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"gitee.com/johng/gf/g/util/gconv"
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2018-10-18 13:43:00 +08:00
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"gitee.com/johng/gf/g/util/gregex"
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2018-10-22 13:19:06 +08:00
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"io"
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"os"
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"os/exec"
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"os/user"
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"path/filepath"
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"runtime"
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"sort"
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"strings"
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"time"
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2017-11-23 10:21:28 +08:00
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)
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// 文件分隔符
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2018-04-19 14:58:25 +08:00
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const (
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2018-10-23 16:56:25 +08:00
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Separator = string(filepath.Separator)
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// 默认的文件打开权限
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gDEFAULT_PERM = 0666
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2018-04-19 14:58:25 +08:00
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)
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2017-11-23 10:21:28 +08:00
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2018-08-21 21:18:56 +08:00
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var (
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// 源码的main包所在目录,仅仅会设置一次
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mainPkgPath = gtype.NewString()
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2018-05-29 13:40:36 +08:00
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2018-08-21 21:18:56 +08:00
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// 编译时的 GOROOT 数值
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goRootOfBuild = gtype.NewString()
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)
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2018-05-03 16:12:01 +08:00
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2017-11-23 10:21:28 +08:00
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// 给定文件的绝对路径创建文件
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func Mkdir(path string) error {
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err := os.MkdirAll(path, os.ModePerm)
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if err != nil {
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return err
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}
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return nil
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}
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// 给定文件的绝对路径创建文件
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func Create(path string) error {
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2018-05-10 23:52:09 +08:00
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dir := Dir(path)
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if !Exists(dir) {
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Mkdir(dir)
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}
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2017-11-23 10:21:28 +08:00
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f, err := os.Create(path)
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if err != nil {
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return err
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}
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f.Close()
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return nil
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}
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2018-10-22 18:58:11 +08:00
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// 打开文件(os.O_RDWR|os.O_CREATE, 0666)
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2017-11-23 10:21:28 +08:00
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func Open(path string) (*os.File, error) {
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2018-10-23 16:56:25 +08:00
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f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, gDEFAULT_PERM)
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2017-11-23 10:21:28 +08:00
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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2018-10-22 18:58:11 +08:00
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// 打开文件(带flag)
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2017-11-23 10:21:28 +08:00
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func OpenWithFlag(path string, flag int) (*os.File, error) {
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2018-10-23 16:56:25 +08:00
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f, err := os.OpenFile(path, flag, gDEFAULT_PERM)
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2017-11-23 10:21:28 +08:00
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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2018-10-22 18:58:11 +08:00
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// 打开文件(带flag&perm)
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func OpenWithFlagPerm(path string, flag int, perm int) (*os.File, error) {
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f, err := os.OpenFile(path, flag, os.FileMode(perm))
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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2017-11-23 10:21:28 +08:00
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// 判断所给路径文件/文件夹是否存在
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func Exists(path string) bool {
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2018-09-25 17:25:38 +08:00
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if _, err := os.Stat(path); !os.IsNotExist(err) {
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return true
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}
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return false
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2017-11-23 10:21:28 +08:00
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}
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// 判断所给路径是否为文件夹
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func IsDir(path string) bool {
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s, err := os.Stat(path)
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if err != nil {
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return false
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}
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return s.IsDir()
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}
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2018-08-14 19:53:31 +08:00
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// 获取当前工作目录
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func Pwd() string {
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pwd, _ := filepath.Abs(filepath.Dir(os.Args[0]))
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return pwd
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}
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2017-11-23 10:21:28 +08:00
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// 判断所给路径是否为文件
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func IsFile(path string) bool {
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2018-08-06 12:39:55 +08:00
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s, err := os.Stat(path)
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if err != nil {
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return false
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}
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return !s.IsDir()
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}
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// 获取文件或目录信息
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func Info(path string) *os.FileInfo {
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info, err := os.Stat(path)
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if err != nil {
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return nil
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}
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return &info
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}
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// 文件移动/重命名
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func Move(src string, dst string) error {
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return os.Rename(src, dst)
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}
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// 文件移动/重命名
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func Rename(src string, dst string) error {
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return Move(src, dst)
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}
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// 文件复制
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func Copy(src string, dst string) error {
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srcFile, err := os.Open(src)
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if err != nil {
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return err
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}
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dstFile, err := os.Create(dst)
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if err != nil {
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return err
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}
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_, err = io.Copy(dstFile, srcFile)
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if err != nil {
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return err
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}
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err = dstFile.Sync()
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if err != nil {
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return err
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}
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srcFile.Close()
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dstFile.Close()
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return nil
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}
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2018-09-18 18:57:34 +08:00
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// 返回目录下的文件名列表
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func DirNames(path string) ([]string, error) {
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f, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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list, err := f.Readdirnames(-1)
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f.Close()
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if err != nil {
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return nil, err
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}
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return list, nil
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}
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2018-09-13 18:40:04 +08:00
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// 文件名正则匹配查找,第二个可选参数指定返回的列表是否仅为文件名(非绝对路径),默认返回绝对路径
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func Glob(pattern string, onlyNames...bool) ([]string, error) {
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if list, err := filepath.Glob(pattern); err == nil {
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if len(onlyNames) > 0 && onlyNames[0] && len(list) > 0 {
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array := make([]string, len(list))
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for k, v := range list {
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array[k] = Basename(v)
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}
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return array, nil
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}
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return list, nil
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} else {
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return nil, err
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}
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2018-06-19 15:17:58 +08:00
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}
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2017-11-23 10:21:28 +08:00
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// 文件/目录删除
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func Remove(path string) error {
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return os.RemoveAll(path)
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}
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2018-10-22 13:19:06 +08:00
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// 文件是否可读
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2017-11-23 10:21:28 +08:00
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func IsReadable(path string) bool {
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result := true
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2018-10-23 16:56:25 +08:00
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file, err := os.OpenFile(path, os.O_RDONLY, gDEFAULT_PERM)
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2017-11-23 10:21:28 +08:00
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if err != nil {
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result = false
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}
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file.Close()
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return result
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}
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// 文件是否可写
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func IsWritable(path string) bool {
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result := true
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if IsDir(path) {
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// 如果是目录,那么创建一个临时文件进行写入测试
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2018-09-15 16:40:13 +08:00
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tfile := strings.TrimRight(path, Separator) + Separator + gconv.String(time.Now().UnixNano())
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err := Create(tfile)
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if err != nil || !Exists(tfile){
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result = false
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} else {
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Remove(tfile)
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}
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} else {
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// 如果是文件,那么判断文件是否可打开
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2018-10-23 16:56:25 +08:00
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file, err := os.OpenFile(path, os.O_WRONLY, gDEFAULT_PERM)
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if err != nil {
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result = false
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}
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file.Close()
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}
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return result
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}
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// 修改文件/目录权限
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func Chmod(path string, mode os.FileMode) error {
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return os.Chmod(path, mode)
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}
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2018-09-13 18:40:04 +08:00
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// 打开目录,并返回其下一级文件列表(绝对路径),按照文件名称大小写进行排序,支持目录递归遍历。
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func ScanDir(path string, pattern string, recursive ... bool) ([]string, error) {
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list, err := doScanDir(path, pattern, recursive...)
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2017-11-23 10:21:28 +08:00
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if err != nil {
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2018-09-13 18:40:04 +08:00
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return nil, err
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2017-11-23 10:21:28 +08:00
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}
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2018-09-13 18:40:04 +08:00
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if len(list) > 0 {
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sort.Strings(list)
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}
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return list, nil
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}
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2017-11-23 10:21:28 +08:00
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2018-09-13 18:40:04 +08:00
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// 内部检索目录方法,支持递归,返回没有排序的文件绝对路径列表结果
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func doScanDir(path string, pattern string, recursive ... bool) ([]string, error) {
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var list []string
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// 打开目录
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dfile, err := os.Open(path)
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2017-11-23 10:21:28 +08:00
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if err != nil {
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2018-09-13 18:40:04 +08:00
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return nil, err
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}
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defer dfile.Close()
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// 读取目录下的文件列表
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names, err := dfile.Readdirnames(-1)
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if err != nil {
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return nil, err
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2017-11-23 10:21:28 +08:00
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}
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2018-08-19 11:25:15 +08:00
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// 是否递归遍历
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2018-10-10 15:24:30 +08:00
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for _, name := range names {
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path := fmt.Sprintf("%s%s%s", path, Separator, name)
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if IsDir(path) && len(recursive) > 0 && recursive[0] {
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array, _ := doScanDir(path, pattern, true)
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if len(array) > 0 {
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list = append(list, array...)
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|
|
}
|
|
|
|
|
|
}
|
2018-10-10 15:24:30 +08:00
|
|
|
|
// 满足pattern才加入结果列表
|
|
|
|
|
|
if match, err := filepath.Match(pattern, name); err == nil && match {
|
|
|
|
|
|
list = append(list, path)
|
|
|
|
|
|
}
|
2018-08-19 11:25:15 +08:00
|
|
|
|
}
|
2018-09-13 18:40:04 +08:00
|
|
|
|
return list, nil
|
2017-11-23 10:21:28 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 将所给定的路径转换为绝对路径
|
|
|
|
|
|
// 并判断文件路径是否存在,如果文件不存在,那么返回空字符串
|
|
|
|
|
|
func RealPath(path string) string {
|
|
|
|
|
|
p, err := filepath.Abs(path)
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
return ""
|
|
|
|
|
|
}
|
|
|
|
|
|
if !Exists(p) {
|
|
|
|
|
|
return ""
|
|
|
|
|
|
}
|
|
|
|
|
|
return p
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 获取当前执行文件的绝对路径
|
|
|
|
|
|
func SelfPath() string {
|
|
|
|
|
|
p, _ := filepath.Abs(os.Args[0])
|
|
|
|
|
|
return p
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 获取当前执行文件的目录绝对路径
|
|
|
|
|
|
func SelfDir() string {
|
|
|
|
|
|
return filepath.Dir(SelfPath())
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 获取指定文件路径的文件名称
|
|
|
|
|
|
func Basename(path string) string {
|
|
|
|
|
|
return filepath.Base(path)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 获取指定文件路径的目录地址绝对路径
|
|
|
|
|
|
func Dir(path string) string {
|
|
|
|
|
|
return filepath.Dir(path)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2018-10-24 14:51:32 +08:00
|
|
|
|
// 获取指定文件路径的文件扩展名(包含"."号)
|
2017-11-23 10:21:28 +08:00
|
|
|
|
func Ext(path string) string {
|
|
|
|
|
|
return filepath.Ext(path)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 获取用户主目录
|
|
|
|
|
|
func Home() (string, error) {
|
|
|
|
|
|
u, err := user.Current()
|
|
|
|
|
|
if nil == err {
|
|
|
|
|
|
return u.HomeDir, nil
|
|
|
|
|
|
}
|
|
|
|
|
|
if "windows" == runtime.GOOS {
|
|
|
|
|
|
return homeWindows()
|
|
|
|
|
|
}
|
|
|
|
|
|
return homeUnix()
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func homeUnix() (string, error) {
|
|
|
|
|
|
if home := os.Getenv("HOME"); home != "" {
|
|
|
|
|
|
return home, nil
|
|
|
|
|
|
}
|
|
|
|
|
|
var stdout bytes.Buffer
|
|
|
|
|
|
cmd := exec.Command("sh", "-c", "eval echo ~$USER")
|
|
|
|
|
|
cmd.Stdout = &stdout
|
|
|
|
|
|
if err := cmd.Run(); err != nil {
|
|
|
|
|
|
return "", err
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
result := strings.TrimSpace(stdout.String())
|
|
|
|
|
|
if result == "" {
|
|
|
|
|
|
return "", errors.New("blank output when reading home directory")
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return result, nil
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func homeWindows() (string, error) {
|
|
|
|
|
|
drive := os.Getenv("HOMEDRIVE")
|
|
|
|
|
|
path := os.Getenv("HOMEPATH")
|
|
|
|
|
|
home := drive + path
|
|
|
|
|
|
if drive == "" || path == "" {
|
|
|
|
|
|
home = os.Getenv("USERPROFILE")
|
|
|
|
|
|
}
|
|
|
|
|
|
if home == "" {
|
|
|
|
|
|
return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return home, nil
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2018-05-29 13:40:36 +08:00
|
|
|
|
// 获取入口函数文件所在目录(main包文件目录),
|
2018-10-18 13:43:00 +08:00
|
|
|
|
// **仅对源码开发环境有效(即仅对生成该可执行文件的系统下有效)**
|
2018-05-03 16:12:01 +08:00
|
|
|
|
func MainPkgPath() string {
|
|
|
|
|
|
path := mainPkgPath.Val()
|
2018-05-29 13:40:36 +08:00
|
|
|
|
if path != "" {
|
|
|
|
|
|
return path
|
2018-05-03 16:12:01 +08:00
|
|
|
|
}
|
|
|
|
|
|
f := ""
|
|
|
|
|
|
for i := 1; i < 10000; i++ {
|
|
|
|
|
|
if _, file, _, ok := runtime.Caller(i); ok {
|
2018-05-31 12:07:31 +08:00
|
|
|
|
if strings.EqualFold("<autogenerated>", file) {
|
|
|
|
|
|
// 如果是通过init包方法进入,那么无法得到准确的文件路径
|
|
|
|
|
|
f = ""
|
2018-10-18 13:43:00 +08:00
|
|
|
|
} else {
|
|
|
|
|
|
goroot := GoRootOfBuild()
|
|
|
|
|
|
if goroot != "" && !gregex.IsMatchString("^" + GoRootOfBuild(), file) {
|
|
|
|
|
|
// 不包含go源码路径
|
|
|
|
|
|
f = file
|
|
|
|
|
|
}
|
2018-05-03 16:12:01 +08:00
|
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
break
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
if f != "" {
|
2018-05-31 12:07:31 +08:00
|
|
|
|
p := Dir(f)
|
|
|
|
|
|
mainPkgPath.Set(p)
|
|
|
|
|
|
return p
|
2018-05-03 16:12:01 +08:00
|
|
|
|
}
|
|
|
|
|
|
return ""
|
2018-05-06 22:35:08 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2018-10-18 13:43:00 +08:00
|
|
|
|
// 编译时环境的GOROOT数值(对init初始化方法调用时无效,获取不了ROOT值)
|
|
|
|
|
|
// 注意:可能返回空
|
2018-05-29 13:40:36 +08:00
|
|
|
|
func GoRootOfBuild() string {
|
|
|
|
|
|
if v := goRootOfBuild.Val(); v != "" {
|
|
|
|
|
|
return v
|
|
|
|
|
|
}
|
|
|
|
|
|
firstEntry := ""
|
|
|
|
|
|
for i := 0; i < 10000; i++ {
|
|
|
|
|
|
if _, file, _, ok := runtime.Caller(i); ok {
|
|
|
|
|
|
firstEntry = file
|
|
|
|
|
|
} else {
|
|
|
|
|
|
break
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
if len(firstEntry) > 0 {
|
|
|
|
|
|
sep := "/"
|
|
|
|
|
|
array := strings.Split(firstEntry, sep)
|
|
|
|
|
|
if len(array) == 1 {
|
|
|
|
|
|
sep = "\\"
|
|
|
|
|
|
array = strings.Split(firstEntry, sep)
|
|
|
|
|
|
}
|
|
|
|
|
|
root := strings.Join(array[0 : len(array) - 3], sep)
|
|
|
|
|
|
goRootOfBuild.Set(root)
|
|
|
|
|
|
return root
|
|
|
|
|
|
}
|
|
|
|
|
|
return ""
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2018-05-06 22:35:08 +08:00
|
|
|
|
// 系统临时目录
|
|
|
|
|
|
func TempDir() string {
|
|
|
|
|
|
return os.TempDir()
|
2017-11-23 10:21:28 +08:00
|
|
|
|
}
|