mirror of https://gitea.com/gitea/tea.git
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package utils
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import (
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"errors"
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"os"
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"os/user"
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"path/filepath"
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"strings"
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)
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// PathExists returns whether the given file or directory exists or not
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func PathExists(path string) (bool, error) {
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_, err := os.Stat(path)
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if err == nil {
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return true, nil
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}
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if os.IsNotExist(err) {
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return false, nil
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}
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return true, err
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}
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// FileExist returns whether the given file exists or not
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func FileExist(fileName string) (bool, error) {
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return exists(fileName, false)
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}
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// DirExists returns whether the given file exists or not
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func DirExists(path string) (bool, error) {
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return exists(path, true)
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}
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func exists(path string, expectDir bool) (bool, error) {
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f, err := os.Stat(path)
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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return false, nil
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} else if err.(*os.PathError).Err.Error() == "not a directory" {
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// some middle segment of path is a file, cannot traverse
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// FIXME: catches error on linux; go does not provide a way to catch this properly..
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return false, nil
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}
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return false, err
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}
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isDir := f.IsDir()
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if isDir && !expectDir {
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return false, errors.New("A directory with the same name exists")
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} else if !isDir && expectDir {
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return false, errors.New("A file with the same name exists")
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}
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return true, nil
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}
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// AbsPathWithExpansion expand path beginning with "~/" to absolute path
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func AbsPathWithExpansion(p string) (string, error) {
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u, err := user.Current()
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if err != nil {
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return "", err
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}
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if p == "~" {
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return u.HomeDir, nil
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} else if strings.HasPrefix(p, "~/") {
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return filepath.Join(u.HomeDir, p[2:]), nil
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} else {
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return filepath.Abs(p)
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}
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}
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