// iterateCommitTrees iterate all reachable trees from the given commit
func iterateCommitTrees(
s storer.EncodedObjectStorer,
commit *object.Commit,
cb func(h plumbing.Hash) error) error {
tree, err := commit.Tree()
if err != nil {
return err
}
if err := cb(tree.Hash); err != nil {
return err
}
treeWalker := object.NewTreeWalker(tree, true)
for {
_, e, err := treeWalker.Next()
if err == io.EOF {
break
}
if err != nil {
return err
}
if err := cb(e.Hash); err != nil {
return err
}
}
return nil
}
func newWithEmpty(a, b *object.Tree) (Changes, error) {
changes := newEmpty()
var action Action
var tree *object.Tree
if a == nil {
action = Insert
tree = b
} else {
action = Delete
tree = a
}
w := object.NewTreeWalker(tree, true)
defer w.Close()
for {
path, entry, err := w.Next()
if err == io.EOF {
break
} else if err != nil {
return nil, fmt.Errorf("cannot get next file: %s", err)
}
if entry.Mode.IsDir() {
continue
}
c := &Change{Action: action}
if action == Insert {
c.To.Name = path
c.To.TreeEntry = entry
c.To.Tree = tree
} else {
c.From.Name = path
c.From.TreeEntry = entry
c.From.Tree = tree
}
changes = append(changes, c)
}
return changes, nil
}