[libgit2-glib] Added ggit_index_entry_set_commit

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 0156991832b6fd7d1365c3e9de71d1085dc16882
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Sun Dec 14 10:55:49 2014 +0100

    Added ggit_index_entry_set_commit

 libgit2-glib/ggit-index-entry.c |   37 +++++++++++++++++++++++++++++++++++++
 libgit2-glib/ggit-index-entry.h |    3 +++
 2 files changed, 40 insertions(+), 0 deletions(-)
---
diff --git a/libgit2-glib/ggit-index-entry.c b/libgit2-glib/ggit-index-entry.c
index 81d43e9..f0cf00b 100644
--- a/libgit2-glib/ggit-index-entry.c
+++ b/libgit2-glib/ggit-index-entry.c
@@ -21,6 +21,8 @@
 #include "ggit-index-entry.h"
 #include "ggit-index.h"
 #include "ggit-repository.h"
+#include "ggit-commit.h"
+#include "ggit-signature.h"
 
 #include <string.h>
 
@@ -775,6 +777,41 @@ ggit_index_entry_stat (GgitIndexEntry  *entry,
        return TRUE;
 }
 
+/**
+ * ggit_index_entry_set_commit:
+ * @entry: a #GgitIndexEntry.
+ * @commit: a #GgitCommit.
+ *
+ * Set the index entry to point to a given commit. This sets the index entry
+ * id to the commit id, changes the mode to #GGIT_FILE_MODE_COMMIT and updates
+ * the timestamps to when the commit was made.
+ *
+ **/
+void
+ggit_index_entry_set_commit (GgitIndexEntry    *entry,
+                             GgitCommit        *commit)
+{
+       GgitSignature *sig;
+       gint64 ut;
+
+       g_return_if_fail (entry != NULL);
+       g_return_if_fail (GGIT_IS_COMMIT (commit));
+
+       ggit_index_entry_set_id (entry, ggit_object_get_id (GGIT_OBJECT (commit)));
+       ggit_index_entry_set_mode (entry, GIT_FILEMODE_COMMIT);
+
+       sig = ggit_commit_get_committer (commit);
+       ut = g_date_time_to_unix (ggit_signature_get_time (sig));
+
+       entry->entry->ctime.seconds = ut;
+       entry->entry->ctime.nanoseconds = 0;
+
+       entry->entry->mtime.seconds = ut;
+       entry->entry->mtime.nanoseconds = 0;
+
+       g_object_unref (sig);
+}
+
 const git_index_entry *
 _ggit_index_entry_get_native (GgitIndexEntry *entry)
 {
diff --git a/libgit2-glib/ggit-index-entry.h b/libgit2-glib/ggit-index-entry.h
index 0f4935e..8e6ec0f 100644
--- a/libgit2-glib/ggit-index-entry.h
+++ b/libgit2-glib/ggit-index-entry.h
@@ -98,6 +98,9 @@ gboolean          ggit_index_entry_stat               (GgitIndexEntry    *entry,
                                                        GFile             *file,
                                                        GError           **error);
 
+void              ggit_index_entry_set_commit         (GgitIndexEntry    *entry,
+                                                       GgitCommit        *commit);
+
 const git_index_entry
                  *_ggit_index_entry_get_native        (GgitIndexEntry    *entry);