5 files changed, 69 insertions, 1 deletions
diff --git a/blob.go b/blob.go
index b1fc78a..382bb9e 100644
--- a/blob.go
+++ b/blob.go
@@ -84,7 +84,7 @@ func (repo *Repository) CreateBlobFromChunks(hintPath string, callback BlobChunk
 
 	var chintPath *C.char = nil
 	if len(hintPath) > 0 {
-		C.CString(hintPath)
+		chintPath = C.CString(hintPath)
 		defer C.free(unsafe.Pointer(chintPath))
 	}
 	oid := C.git_oid{}
diff --git a/odb.go b/odb.go
index 8e8fba0..dfad507 100644
--- a/odb.go
+++ b/odb.go
@@ -54,6 +54,21 @@ func (v *Odb) AddBackend(backend *OdbBackend, priority int) (err error) {
 	return nil
 }
 
+func (v *Odb) ReadHeader(oid *Oid) (uint64, ObjectType, error) {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+	
+	var sz C.size_t
+	var cotype C.git_otype 
+
+	ret := C.git_odb_read_header(&sz, &cotype, v.ptr, oid.toC())
+	if ret < 0 {
+		return 0, C.GIT_OBJ_BAD, MakeGitError(ret)
+	}
+
+	return uint64(sz), ObjectType(cotype), nil
+}
+	
 func (v *Odb) Exists(oid *Oid) bool {
 	ret := C.git_odb_exists(v.ptr, oid.toC())
 	return ret != 0
diff --git a/odb_test.go b/odb_test.go
index 0d765b9..dfd2ad0 100644
--- a/odb_test.go
+++ b/odb_test.go
@@ -6,6 +6,34 @@ import (
 	"testing"
 )
 
+func TestOdbReadHeader(t *testing.T) {
+	repo := createTestRepo(t)
+	defer cleanupTestRepo(t, repo)
+
+	_, _ = seedTestRepo(t, repo)
+	odb, err := repo.Odb()
+	if err != nil {
+		t.Fatalf("Odb: %v", err)
+	}
+	data := []byte("hello")
+	id, err := odb.Write(data, ObjectBlob)
+	if err != nil {
+		t.Fatalf("odb.Write: %v", err)
+	}
+
+	sz, typ, err := odb.ReadHeader(id)
+	if err != nil {
+		t.Fatalf("ReadHeader: %v", err)
+	}
+	
+	if sz != uint64(len(data)) {
+		t.Errorf("ReadHeader got size %d, want %d", sz, len(data))
+	}
+	if typ != ObjectBlob {
+		t.Errorf("ReadHeader got object type %s", typ)
+	}
+}
+
 func TestOdbStream(t *testing.T) {
 	repo := createTestRepo(t)
 	defer cleanupTestRepo(t, repo)
diff --git a/repository.go b/repository.go
index 62fde6d..12638e1 100644
--- a/repository.go
+++ b/repository.go
@@ -433,3 +433,24 @@ func (r *Repository) StateCleanup() error {
 	}
 	return nil
 }
+func (r *Repository) AddGitIgnoreRules(rules string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	crules := C.CString(rules)
+	defer C.free(unsafe.Pointer(crules))
+	if ret := C.git_ignore_add_rule(r.ptr, crules); ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (r *Repository) ClearGitIgnoreRules() error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	if ret := C.git_ignore_clear_internal_rules(r.ptr); ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
diff --git a/walk.go b/walk.go
index c314f60..60e618d 100644
--- a/walk.go
+++ b/walk.go
@@ -194,6 +194,10 @@ func (v *RevWalk) Iterate(fun RevWalkIterator) (err error) {
 	return nil
 }
 
+func (v *RevWalk) SimplifyFirstParent() {
+	C.git_revwalk_simplify_first_parent(v.ptr)
+}
+
 func (v *RevWalk) Sorting(sm SortType) {
 	C.git_revwalk_sorting(v.ptr, C.uint(sm))
 }