Method entry

plumbing/format/packfile/encoder.go:84–135

(o *ObjectToPack)

}

func (e *Encoder) entry(o *ObjectToPack) (err error) {
	if o.WantWrite() {
		// A cycle exists in this delta chain. This should only occur if a
		// selected object representation disappeared during writing
		// (for example due to a concurrent repack) and a different base
		// was chosen, forcing a cycle. Select something other than a
		// delta, and write this object.
		e.selector.restoreOriginal(o)
		o.BackToOriginal()
	}

	if o.IsWritten() {
		return nil
	}

	o.MarkWantWrite()

	if err := e.writeBaseIfDelta(o); err != nil {
		return err
	}

	// We need to check if we already write that object due a cyclic delta chain
	if o.IsWritten() {
		return nil
	}

	o.Offset = e.w.Offset()

	if o.IsDelta() {
		if err := e.writeDeltaHeader(o); err != nil {
			return err
		}
	} else {
		if err := e.entryHead(o.Type(), o.Size()); err != nil {
			return err
		}
	}

	e.zw.Reset(e.w)

	defer ioutil.CheckClose(e.zw, &err)

	or, err := o.Object.Reader()
	if err != nil {
		return err
	}

	defer ioutil.CheckClose(or, &err)

	_, err = io.Copy(e.zw, or)
	return err
}

func (e *Encoder) writeBaseIfDelta(o *ObjectToPack) error {
	if o.IsDelta() && !o.Base.IsWritten() {