Merge pull request #173 from AaronO/add/graph-methods
Add bindings for git_graph_* methods
diff --git a/graph.go b/graph.go
new file mode 100644
index 0000000..e5d7732
--- /dev/null
+++ b/graph.go
@@ -0,0 +1,36 @@
+package git
+
+/*
+#include <git2.h>
+*/
+import "C"
+import (
+ "runtime"
+)
+
+func (repo *Repository) DescendantOf(commit, ancestor *Oid) (bool, error) {
+ runtime.LockOSThread()
+ defer runtime.UnlockOSThread()
+
+ ret := C.git_graph_descendant_of(repo.ptr, commit.toC(), ancestor.toC())
+ if ret < 0 {
+ return false, MakeGitError(ret)
+ }
+
+ return (ret > 0), nil
+}
+
+func (repo *Repository) AheadBehind(local, upstream *Oid) (ahead, behind int, err error) {
+ runtime.LockOSThread()
+ defer runtime.UnlockOSThread()
+
+ var aheadT C.size_t
+ var behindT C.size_t
+
+ ret := C.git_graph_ahead_behind(&aheadT, &behindT, repo.ptr, local.toC(), upstream.toC())
+ if ret < 0 {
+ return 0, 0, MakeGitError(ret)
+ }
+
+ return int(aheadT), int(behindT), nil
+}
