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package utils
import (
"net/url"
stdpath "path"
"strings"
"github.com/alist-org/alist/v3/internal/errs"
)
// FixAndCleanPath
// The upper layer of the root directory is still the root directory.
// So ".." And "." will be cleared
// for example
// 1. ".." or "." => "/"
// 2. "../..." or "./..." => "/..."
// 3. "../.x." or "./.x." => "/.x."
// 4. "x//\\y" = > "/z/x"
func FixAndCleanPath(path string) string {
path = strings.ReplaceAll(path, "\\", "/")
if !strings.HasPrefix(path, "/") {
path = "/" + path
}
return stdpath.Clean(path)
}
// PathAddSeparatorSuffix Add path '/' suffix
// for example /root => /root/
func PathAddSeparatorSuffix(path string) string {
if !strings.HasSuffix(path, "/") {
path = path + "/"
}
return path
}
// PathEqual judge path is equal
func PathEqual(path1, path2 string) bool {
return FixAndCleanPath(path1) == FixAndCleanPath(path2)
}
func IsSubPath(path string, subPath string) bool {
path, subPath = FixAndCleanPath(path), FixAndCleanPath(subPath)
return path == subPath || strings.HasPrefix(subPath, PathAddSeparatorSuffix(path))
}
func Ext(path string) string {
ext := stdpath.Ext(path)
if strings.HasPrefix(ext, ".") {
ext = ext[1:]
}
return strings.ToLower(ext)
}
func EncodePath(path string, all ...bool) string {
seg := strings.Split(path, "/")
toReplace := []struct {
Src string
Dst string
}{
{Src: "%", Dst: "%25"},
{"%", "%25"},
{"?", "%3F"},
{"#", "%23"},
}
for i := range seg {
if len(all) > 0 && all[0] {
seg[i] = url.PathEscape(seg[i])
} else {
for j := range toReplace {
seg[i] = strings.ReplaceAll(seg[i], toReplace[j].Src, toReplace[j].Dst)
}
}
}
return strings.Join(seg, "/")
}
func JoinBasePath(basePath, reqPath string) (string, error) {
/** relative path:
* 1. ..
* 2. ../
* 3. /..
* 4. /../
* 5. /a/b/..
*/
if reqPath == ".." ||
strings.HasSuffix(reqPath, "/..") ||
strings.HasPrefix(reqPath, "../") ||
strings.Contains(reqPath, "/../") {
return "", errs.RelativePath
}
return stdpath.Join(FixAndCleanPath(basePath), FixAndCleanPath(reqPath)), nil
}
func GetFullPath(mountPath, path string) string {
return stdpath.Join(GetActualMountPath(mountPath), path)
}
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