// ApplyDelta writes to taget the result of applying the modification deltas in delta to base.
func ApplyDelta(target, base plumbing.EncodedObject, delta []byte) error {
r, err := base.Reader()
if err != nil {
return err
}
w, err := target.Writer()
if err != nil {
return err
}
src, err := ioutil.ReadAll(r)
if err != nil {
return err
}
dst := PatchDelta(src, delta)
target.SetSize(int64(len(dst)))
if _, err := w.Write(dst); err != nil {
return err
}
return nil
}
// Encode transforms a Tree into a plumbing.EncodedObject.
func (t *Tree) Encode(o plumbing.EncodedObject) error {
o.SetType(plumbing.TreeObject)
w, err := o.Writer()
if err != nil {
return err
}
var size int
defer ioutil.CheckClose(w, &err)
for _, entry := range t.Entries {
n, err := fmt.Fprintf(w, "%o %s", entry.Mode, entry.Name)
if err != nil {
return err
}
size += n
n, err = w.Write([]byte{0x00})
if err != nil {
return err
}
size += n
n, err = w.Write([]byte(entry.Hash[:]))
if err != nil {
return err
}
size += n
}
o.SetSize(int64(size))
return err
}