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path.go
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path.go
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/*
*Copyright (c) 2022, kaydxh
*
*Permission is hereby granted, free of charge, to any person obtaining a copy
*of this software and associated documentation files (the "Software"), to deal
*in the Software without restriction, including without limitation the rights
*to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
*copies of the Software, and to permit persons to whom the Software is
*furnished to do so, subject to the following conditions:
*
*The above copyright notice and this permission notice shall be included in all
*copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
*IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
*AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
*LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
*OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*SOFTWARE.
*/
package filepath
import (
"path"
"path/filepath"
)
func GetParentRelPath(filePath string) string {
fileName := path.Base(filePath)
parentDir := GetParentRelDir(filePath)
return filepath.Join(parentDir, fileName)
}
func GetParentRelDir(filePath string) string {
dir := path.Dir(filePath)
return path.Base(dir)
}
func LastChar(str string) uint8 {
if str == "" {
// char '0' means dec 48, 0 means null
return 0
}
return str[len(str)-1]
}
// join paths, keep relativePath suffix
func JoinPaths(rootPath, relativePath string) (string, error) {
absolutePath, err := filepath.Abs(rootPath)
if err != nil {
return "", err
}
if relativePath == "" {
return absolutePath, nil
}
finalPath := path.Join(absolutePath, relativePath)
if LastChar(relativePath) == '/' && LastChar(finalPath) != '/' {
return finalPath + "/", nil
}
return finalPath, nil
}
// CanonicalizePath turns path into an absolute path without symlinks.
func CanonicalizePath(path string) (string, error) {
path, err := filepath.Abs(path)
if err != nil {
return "", err
}
activepath, err := filepath.EvalSymlinks(path)
if err == nil {
return activepath, nil
}
/*
// Get a better error if we have an invalid path
if pathErr, ok := err.(*os.PathError); ok {
err = errors.Wrap(pathErr.Err, pathErr.Path)
}
*/
return path, nil
}