131 lines
2.5 KiB
Go
131 lines
2.5 KiB
Go
package build
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import (
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"fmt"
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"io"
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"log/slog"
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"os"
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"path/filepath"
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"syscall"
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)
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// Source - https://stackoverflow.com/a
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// Posted by Oleg Neumyvakin, modified by community. See post 'Timeline' for change history
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// Retrieved 2026-01-20, License - CC BY-SA 4.0
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func CopyDirectory(scrDir, dest string) error {
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entries, err := os.ReadDir(scrDir)
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if err != nil {
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return err
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}
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for _, entry := range entries {
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sourcePath := filepath.Join(scrDir, entry.Name())
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destPath := filepath.Join(dest, entry.Name())
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fileInfo, err := os.Stat(sourcePath)
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if err != nil {
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return err
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}
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stat, ok := fileInfo.Sys().(*syscall.Stat_t)
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if !ok {
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return fmt.Errorf("failed to get raw syscall.Stat_t data for '%s'", sourcePath)
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}
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switch fileInfo.Mode() & os.ModeType {
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case os.ModeDir:
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if err := CreateIfNotExists(destPath, 0o755); err != nil {
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return err
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}
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if err := CopyDirectory(sourcePath, destPath); err != nil {
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return err
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}
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case os.ModeSymlink:
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if err := CopySymLink(sourcePath, destPath); err != nil {
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return err
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}
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default:
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if err := Copy(sourcePath, destPath); err != nil {
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return err
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}
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}
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if err := os.Lchown(destPath, int(stat.Uid), int(stat.Gid)); err != nil {
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return err
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}
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fInfo, err := entry.Info()
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if err != nil {
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return err
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}
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isSymlink := fInfo.Mode()&os.ModeSymlink != 0
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if !isSymlink {
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if err := os.Chmod(destPath, fInfo.Mode()); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func Copy(srcFile, dstFile string) error {
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out, err := os.Create(dstFile)
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if err != nil {
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return err
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}
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defer func(out *os.File) {
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err := out.Close()
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if err != nil {
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slog.Error("failed to close file", slog.Any("err", err))
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}
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}(out)
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in, err := os.Open(srcFile)
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if err != nil {
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return err
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}
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defer func(in *os.File) {
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err := in.Close()
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if err != nil {
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slog.Error("error closing destination file", slog.Any("err", err))
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}
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}(in)
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_, err = io.Copy(out, in)
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if err != nil {
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return err
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}
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return nil
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}
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func Exists(filePath string) bool {
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if _, err := os.Stat(filePath); os.IsNotExist(err) {
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return false
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}
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return true
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}
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func CreateIfNotExists(dir string, perm os.FileMode) error {
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if Exists(dir) {
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return nil
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}
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if err := os.MkdirAll(dir, perm); err != nil {
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return fmt.Errorf("failed to create directory: '%s', error: '%s'", dir, err.Error())
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}
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return nil
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}
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func CopySymLink(source, dest string) error {
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link, err := os.Readlink(source)
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if err != nil {
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return err
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}
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return os.Symlink(link, dest)
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}
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