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| 1 | +// Copyright 2022 The Gitea Authors. All rights reserved. |
| 2 | +// Use of this source code is governed by a MIT-style |
| 3 | +// license that can be found in the LICENSE file. |
| 4 | + |
| 5 | +package unittest |
| 6 | + |
| 7 | +import ( |
| 8 | + "errors" |
| 9 | + "io" |
| 10 | + "os" |
| 11 | + "path" |
| 12 | + "strings" |
| 13 | + |
| 14 | + "code.gitea.io/gitea/modules/util" |
| 15 | +) |
| 16 | + |
| 17 | +// Copy copies file from source to target path. |
| 18 | +func Copy(src, dest string) error { |
| 19 | + // Gather file information to set back later. |
| 20 | + si, err := os.Lstat(src) |
| 21 | + if err != nil { |
| 22 | + return err |
| 23 | + } |
| 24 | + |
| 25 | + // Handle symbolic link. |
| 26 | + if si.Mode()&os.ModeSymlink != 0 { |
| 27 | + target, err := os.Readlink(src) |
| 28 | + if err != nil { |
| 29 | + return err |
| 30 | + } |
| 31 | + // NOTE: os.Chmod and os.Chtimes don't recognize symbolic link, |
| 32 | + // which will lead "no such file or directory" error. |
| 33 | + return os.Symlink(target, dest) |
| 34 | + } |
| 35 | + |
| 36 | + sr, err := os.Open(src) |
| 37 | + if err != nil { |
| 38 | + return err |
| 39 | + } |
| 40 | + defer sr.Close() |
| 41 | + |
| 42 | + dw, err := os.Create(dest) |
| 43 | + if err != nil { |
| 44 | + return err |
| 45 | + } |
| 46 | + defer dw.Close() |
| 47 | + |
| 48 | + if _, err = io.Copy(dw, sr); err != nil { |
| 49 | + return err |
| 50 | + } |
| 51 | + |
| 52 | + // Set back file information. |
| 53 | + if err = os.Chtimes(dest, si.ModTime(), si.ModTime()); err != nil { |
| 54 | + return err |
| 55 | + } |
| 56 | + return os.Chmod(dest, si.Mode()) |
| 57 | +} |
| 58 | + |
| 59 | +// CopyDir copy files recursively from source to target directory. |
| 60 | +// |
| 61 | +// The filter accepts a function that process the path info. |
| 62 | +// and should return true for need to filter. |
| 63 | +// |
| 64 | +// It returns error when error occurs in underlying functions. |
| 65 | +func CopyDir(srcPath, destPath string, filters ...func(filePath string) bool) error { |
| 66 | + // Check if target directory exists. |
| 67 | + if _, err := os.Stat(destPath); !errors.Is(err, os.ErrNotExist) { |
| 68 | + return errors.New("file or directory already exists: " + destPath) |
| 69 | + } |
| 70 | + |
| 71 | + err := os.MkdirAll(destPath, os.ModePerm) |
| 72 | + if err != nil { |
| 73 | + return err |
| 74 | + } |
| 75 | + |
| 76 | + // Gather directory info. |
| 77 | + infos, err := util.StatDir(srcPath, true) |
| 78 | + if err != nil { |
| 79 | + return err |
| 80 | + } |
| 81 | + |
| 82 | + var filter func(filePath string) bool |
| 83 | + if len(filters) > 0 { |
| 84 | + filter = filters[0] |
| 85 | + } |
| 86 | + |
| 87 | + for _, info := range infos { |
| 88 | + if filter != nil && filter(info) { |
| 89 | + continue |
| 90 | + } |
| 91 | + |
| 92 | + curPath := path.Join(destPath, info) |
| 93 | + if strings.HasSuffix(info, "/") { |
| 94 | + err = os.MkdirAll(curPath, os.ModePerm) |
| 95 | + } else { |
| 96 | + err = Copy(path.Join(srcPath, info), curPath) |
| 97 | + } |
| 98 | + if err != nil { |
| 99 | + return err |
| 100 | + } |
| 101 | + } |
| 102 | + return nil |
| 103 | +} |
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