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-rw-r--r--plumbing/difftree/change_adaptor.go61
1 files changed, 61 insertions, 0 deletions
diff --git a/plumbing/difftree/change_adaptor.go b/plumbing/difftree/change_adaptor.go
new file mode 100644
index 0000000..edc20b3
--- /dev/null
+++ b/plumbing/difftree/change_adaptor.go
@@ -0,0 +1,61 @@
+package difftree
+
+// The folowing functions transform changes types form the merkletrie
+// package to changes types from this package.
+
+import (
+ "fmt"
+
+ "srcd.works/go-git.v4/plumbing/object"
+ "srcd.works/go-git.v4/utils/merkletrie"
+ "srcd.works/go-git.v4/utils/merkletrie/noder"
+)
+
+func newChange(c merkletrie.Change) (*Change, error) {
+ ret := &Change{}
+
+ var err error
+ if ret.From, err = newChangeEntry(c.From); err != nil {
+ return nil, fmt.Errorf("From field: ", err)
+ }
+
+ if ret.To, err = newChangeEntry(c.To); err != nil {
+ return nil, fmt.Errorf("To field: ", err)
+ }
+
+ return ret, nil
+}
+
+func newChangeEntry(p noder.Path) (ChangeEntry, error) {
+ if p == nil {
+ return empty, nil
+ }
+
+ asTreeNoder, ok := p.Last().(*treeNoder)
+ if !ok {
+ return ChangeEntry{}, fmt.Errorf("cannot transform non-TreeNoders")
+ }
+
+ return ChangeEntry{
+ Name: p.String(),
+ Tree: asTreeNoder.parent,
+ TreeEntry: object.TreeEntry{
+ Name: asTreeNoder.name,
+ Mode: asTreeNoder.mode,
+ Hash: asTreeNoder.hash,
+ },
+ }, nil
+}
+
+func newChanges(src merkletrie.Changes) (Changes, error) {
+ ret := make(Changes, len(src))
+ var err error
+ for i, e := range src {
+ ret[i], err = newChange(e)
+ if err != nil {
+ return nil, fmt.Errorf("change #%d: %s", err)
+ }
+ }
+
+ return ret, nil
+}