56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
package fs
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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// FileName returns the a relative filename with the same base and a given extension in a directory.
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func FileName(fileName, dirName, baseDir, fileExt string) string {
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fileDir := filepath.Dir(fileName)
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if dirName == "" || dirName == "." {
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dirName = fileDir
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} else if fileDir != dirName {
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if filepath.IsAbs(dirName) {
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dirName = filepath.Join(dirName, RelName(fileDir, baseDir))
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} else {
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dirName = filepath.Join(fileDir, dirName)
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}
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}
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if err := os.MkdirAll(dirName, os.ModePerm); err != nil {
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fmt.Println(err.Error())
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return ""
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}
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result := filepath.Join(dirName, filepath.Base(fileName)) + fileExt
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return result
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}
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// RelName returns the file name relative to a directory.
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func RelName(fileName, dir string) string {
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if fileName == dir {
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return ""
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}
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if dir == "" {
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return fileName
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}
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if index := strings.Index(fileName, dir); index == 0 {
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if index := strings.LastIndex(dir, string(os.PathSeparator)); index == len(dir)-1 {
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pos := len(dir)
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return fileName[pos:]
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} else if index := strings.LastIndex(dir, string(os.PathSeparator)); index != len(dir) {
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pos := len(dir) + 1
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return fileName[pos:]
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}
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}
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return fileName
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}
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