Add append_log to reference.

src/oid.c

@@ -46,7 +46,7 @@ git_oid_to_python(const git_oid *oid)
 }
 
 size_t
-py_hex_to_git_oid (PyObject *py_oid, git_oid *oid)
+py_hex_to_git_oid(PyObject *py_oid, git_oid *oid)
 {
     PyObject *py_hex;
     int err;

src/reference.c

@@ -40,6 +40,7 @@
 
 extern PyObject *GitError;
 extern PyTypeObject RefLogEntryType;
+extern PyTypeObject SignatureType;
 
 
 void RefLogIter_dealloc(RefLogIter *self)
@@ -312,6 +313,72 @@ Reference_log(Reference *self)
     return (PyObject*)iter;
 }
 
+PyDoc_STRVAR(Reference_log_append__doc__,
+  "log_append(committer, message, oid)\n"
+  "\n"
+  "Append reflog to the current reference.");
+
+PyObject *
+Reference_log_append(Reference *self, PyObject *args, PyObject *kwds)
+{
+    git_signature *committer;
+    const char *message = NULL;
+    git_reflog *reflog;
+    git_oid oid;
+    git_oid *ref_oid;
+    int err;
+    Signature *py_committer;
+    PyObject *py_message = NULL;
+    PyObject *py_hex = NULL;
+    char *keywords[] = {"committer", "message", "oid", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!|OO", keywords,
+                &SignatureType, &py_committer,
+                &py_message,
+                &py_hex))
+        return NULL;
+
+    /* FIXME: encoding */
+    if (py_message != NULL) {
+        message = py_str_to_c_str(py_message, NULL);
+        if (message == NULL)
+            return NULL;
+    }
+
+    if (py_hex != NULL) {
+        err = py_oid_to_git_oid_expand(self->repo->repo, py_hex, &oid);
+        if (err < 0)
+            return NULL;
+    }
+
+    CHECK_REFERENCE(self);
+
+    err = git_reflog_read(&reflog, self->reference);
+    if (err < 0) {
+        free((void *)message);
+        return NULL;
+    }
+
+    if (py_hex != NULL)
+        ref_oid = &oid;
+    else
+        ref_oid = git_reference_target(self->reference);
+
+    committer = (git_signature *)py_committer->signature;
+    if (!(err = git_reflog_append(reflog,
+                    ref_oid,
+                    committer,
+                    message)))
+        err = git_reflog_write(reflog);
+
+    git_reflog_free(reflog);
+    free((void *)message);
+
+    if (err < 0)
+        return NULL;
+
+    Py_RETURN_NONE;
+}
 
 PyDoc_STRVAR(Reference_get_object__doc__,
   "get_object() -> object\n"
@@ -426,6 +493,7 @@ PyMethodDef Reference_methods[] = {
     METHOD(Reference, rename, METH_O),
     METHOD(Reference, resolve, METH_NOARGS),
     METHOD(Reference, log, METH_NOARGS),
+    METHOD(Reference, log_append, METH_VARARGS|METH_KEYWORDS),
     METHOD(Reference, get_object, METH_NOARGS),
     {NULL}
 };

test/test_reflog.py

@@ -0,0 +1,44 @@
+# -*- coding: UTF-8 -*-
+#
+# Copyright 2010-2013 The pygit2 contributors
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License, version 2,
+# as published by the Free Software Foundation.
+#
+# In addition to the permissions in the GNU General Public License,
+# the authors give you unlimited permission to link the compiled
+# version of this file into combinations with other programs,
+# and to distribute those combinations without any restriction
+# coming from the use of this file.  (The General Public License
+# restrictions do apply in other respects; for example, they cover
+# modification of the file, and distribution when not linked into
+# a combined executable.)
+#
+# This file is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+
+"""Tests for reference log."""
+
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+from pygit2 import Signature
+from . import utils
+
+
+class ReflogTest(utils.RepoTestCase):
+
+    def test_log_append(self):
+        repo = self.repo
+        master = repo.lookup_reference("refs/heads/master")
+        signature = Signature('xtao', 'xutao@douban.com')
+        master.log_append(signature, 'reflog')
+        self.assertTrue('reflog' in [entry.message for entry in master.log()])