Method rewritePackedRefsWithoutRef

storage/filesystem/dotgit/dotgit.go:895–945

(name plumbing.ReferenceName)

}

func (d *DotGit) rewritePackedRefsWithoutRef(name plumbing.ReferenceName) (err error) {
	pr, err := d.openAndLockPackedRefs(false)
	if err != nil {
		return err
	}
	if pr == nil {
		return nil
	}
	defer ioutil.CheckClose(pr, &err)

	// Creating the temp file in the same directory as the target file
	// improves our chances for rename operation to be atomic.
	tmp, err := d.fs.TempFile("", tmpPackedRefsPrefix)
	if err != nil {
		return err
	}
	tmpName := tmp.Name()
	defer func() {
		ioutil.CheckClose(tmp, &err)
		_ = d.fs.Remove(tmpName) // don't check err, we might have renamed it
	}()

	s := bufio.NewScanner(pr)
	found := false
	for s.Scan() {
		line := s.Text()
		ref, err := d.processLine(line)
		if err != nil {
			return err
		}

		if ref != nil && ref.Name() == name {
			found = true
			continue
		}

		if _, err := fmt.Fprintln(tmp, line); err != nil {
			return err
		}
	}

	if err := s.Err(); err != nil {
		return err
	}

	if !found {
		return nil
	}

	return d.rewritePackedRefsWhileLocked(tmp, pr)
}

// process lines from a packed-refs file
func (d *DotGit) processLine(line string) (*plumbing.Reference, error) {