Function localContentSize

cli/command/container/cp.go:174–200

localContentSize returns the total size of regular file content at path. For a regular file it returns the file size. For a directory it walks the tree and sums sizes of all regular files.

(path string)

// For a regular file it returns the file size. For a directory it walks
// the tree and sums sizes of all regular files.
func localContentSize(path string) (int64, error) {
	fi, err := os.Lstat(path)
	if err != nil {
		return -1, err
	}
	if !fi.IsDir() {
		if fi.Mode().IsRegular() {
			return fi.Size(), nil
		}
		return 0, nil
	}
	var total int64
	err = filepath.WalkDir(path, func(_ string, d os.DirEntry, err error) error {
		if err != nil {
			return err
		}
		if d.Type().IsRegular() {
			info, err := d.Info()
			if err != nil {
				return err
			}
			total += info.Size()
		}
		return nil
	})
	return total, err
}

// copySummary formats the "Successfully copied ..." message.
// When contentSize differs from transferredSize, both values are shown.