90 lines
1.8 KiB
Go
90 lines
1.8 KiB
Go
package lea
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import (
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"strings"
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"path/filepath"
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"os"
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"io"
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)
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// 分离文件名与扩展名(包含.)
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func SplitFilename(filename string) (baseName, ext string) {
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baseName = filename
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// 找到最后一个'.'
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ext = SubstringByte(filename, strings.LastIndex(filename, "."))
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baseName = strings.TrimRight(filename, ext)
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ext = strings.ToLower(ext)
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return;
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}
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// 转换文件的格式
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// toExt包含.
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func TransferExt(path string, toExt string) string {
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dir := filepath.Dir(path) + "/" // 文件路径
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name := filepath.Base(path) // 文件名 a.jpg
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// 获取文件名与路径
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baseName, _ := SplitFilename(name)
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return dir + baseName + toExt
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}
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func GetFilename(path string) string {
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return filepath.Base(path)
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}
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// file size
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// length in bytes
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func GetFilesize(path string) int64 {
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fileinfo, err := os.Stat(path)
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if err == nil {
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return fileinfo.Size()
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}
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return 0;
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}
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// 清空dir下所有的文件和文件夹
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// RemoveAll会清空本文件夹, 所以还要创建之
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func ClearDir(dir string) bool {
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err := os.RemoveAll(dir)
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if err != nil {
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return false
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}
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err = os.MkdirAll(dir, 0777)
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if err != nil {
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return false
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}
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return true
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}
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// list dir's all file, return filenames
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func ListDir(dir string) []string {
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f, err := os.Open(dir)
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if err != nil {
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return nil
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}
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names, _ := f.Readdirnames(0)
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return names
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}
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func CopyFile(srcName, dstName string) (written int64, err error) {
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src, err := os.Open(srcName)
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if err != nil {
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return
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}
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defer src.Close()
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dst, err := os.OpenFile(dstName, os.O_WRONLY|os.O_CREATE, 0644)
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if err != nil {
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return
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}
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defer dst.Close()
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return io.Copy(dst, src)
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}
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func IsDirExists(path string) bool {
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fi, err := os.Stat(path)
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if err != nil {
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return os.IsExist(err)
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}else{
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return fi.IsDir()
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}
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return false
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} |