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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package unittest
import (
"errors"
"io"
"os"
"path"
"strings"
"code.gitea.io/gitea/modules/util"
)
// Copy copies file from source to target path.
func Copy(src, dest string) error {
// Gather file information to set back later.
si, err := os.Lstat(src)
if err != nil {
return err
}
// Handle symbolic link.
if si.Mode()&os.ModeSymlink != 0 {
target, err := os.Readlink(src)
if err != nil {
return err
}
// NOTE: os.Chmod and os.Chtimes don't recognize symbolic link,
// which will lead "no such file or directory" error.
return os.Symlink(target, dest)
}
sr, err := os.Open(src)
if err != nil {
return err
}
defer sr.Close()
dw, err := os.Create(dest)
if err != nil {
return err
}
defer dw.Close()
if _, err = io.Copy(dw, sr); err != nil {
return err
}
// Set back file information.
if err = os.Chtimes(dest, si.ModTime(), si.ModTime()); err != nil {
return err
}
return os.Chmod(dest, si.Mode())
}
// CopyDir copy files recursively from source to target directory.
//
// The filter accepts a function that process the path info.
// and should return true for need to filter.
//
// It returns error when error occurs in underlying functions.
func CopyDir(srcPath, destPath string, filters ...func(filePath string) bool) error {
// Check if target directory exists.
if _, err := os.Stat(destPath); !errors.Is(err, os.ErrNotExist) {
return util.NewAlreadyExistErrorf("file or directory already exists: %s", destPath)
}
err := os.MkdirAll(destPath, os.ModePerm)
if err != nil {
return err
}
// Gather directory info.
infos, err := util.StatDir(srcPath, true)
if err != nil {
return err
}
var filter func(filePath string) bool
if len(filters) > 0 {
filter = filters[0]
}
for _, info := range infos {
if filter != nil && filter(info) {
continue
}
curPath := path.Join(destPath, info)
if strings.HasSuffix(info, "/") {
err = os.MkdirAll(curPath, os.ModePerm)
} else {
err = Copy(path.Join(srcPath, info), curPath)
}
if err != nil {
return err
}
}
return nil
}
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