patch.go

@@ -37,6 +37,24 @@ func (patch *Patch) Free() error {
 	return nil
 }
 
+func (patch *Patch) LineStats() (uint, uint, error) {
+	if patch.ptr == nil {
+		return 0, 0, ErrInvalid
+	}
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	var context, additions, deletions C.size_t
+	ecode := C.git_patch_line_stats(&context, &additions, &deletions, patch.ptr)
+	runtime.KeepAlive(patch)
+	if ecode < 0 {
+		return 0, 0, MakeGitError(ecode)
+	}
+
+	return uint(additions), uint(deletions), nil
+}
+
 func (patch *Patch) String() (string, error) {
 	if patch.ptr == nil {
 		return "", ErrInvalid

patch_test.go

@@ -35,4 +35,13 @@ func TestPatch(t *testing.T) {
 	if strings.Index(patchStr, "diff --git a/README b/README\nindex 257cc56..820734a 100644\n--- a/README\n+++ b/README\n@@ -1 +1 @@\n-foo\n+file changed") == -1 {
 		t.Fatalf("patch was bad")
 	}
+
+	numAdditions, numDeletions, err := patch.LineStats()
+	checkFatal(t, err)
+	if numAdditions != 1 {
+		t.Fatal("Incorrect number of additions in line stats")
+	}
+	if numDeletions != 1 {
+		t.Fatal("Incorrect number of deletions in line stats")
+	}
 }