[libgit2-glib] Added ggit_tag_peel

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

commit ae618771a38eddfcfff876d5389b0ffd28747203
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Tue Jun 24 18:15:50 2014 +0200

    Added ggit_tag_peel

 libgit2-glib/ggit-tag.c |   31 +++++++++++++++++++++++++++++++
 libgit2-glib/ggit-tag.h |    3 +++
 2 files changed, 34 insertions(+), 0 deletions(-)
---
diff --git a/libgit2-glib/ggit-tag.c b/libgit2-glib/ggit-tag.c
index 80b78bd..bf5bba0 100644
--- a/libgit2-glib/ggit-tag.c
+++ b/libgit2-glib/ggit-tag.c
@@ -197,4 +197,35 @@ ggit_tag_get_target_type (GgitTag *tag)
        return ggit_utils_get_gtype_from_otype (git_tag_target_type (_ggit_native_get (tag)));
 }
 
+/**
+ * ggit_tag_peel:
+ * @tag: a #GgitTag.
+ * @error: a #GError.
+ *
+ * Recursively peel a tag until a non tag object is found.
+ *
+ * Returns: (transfer full): a #GgitObject.
+ *
+ **/
+GgitObject *
+ggit_tag_peel (GgitTag  *tag,
+               GError  **error)
+{
+       git_object *o;
+       gint ret;
+
+       g_return_val_if_fail (GGIT_IS_TAG (tag), NULL);
+       g_return_val_if_fail (error == NULL || *error == NULL, NULL);
+
+       ret = git_tag_peel (&o, _ggit_native_get (tag));
+
+       if (ret != GIT_OK)
+       {
+               _ggit_error_set (error, ret);
+               return NULL;
+       }
+
+       return ggit_utils_create_real_object (o, TRUE);
+}
+
 /* ex:set ts=8 noet: */
diff --git a/libgit2-glib/ggit-tag.h b/libgit2-glib/ggit-tag.h
index 2dcaeb9..bb01fa3 100644
--- a/libgit2-glib/ggit-tag.h
+++ b/libgit2-glib/ggit-tag.h
@@ -78,6 +78,9 @@ const gchar      *ggit_tag_get_message          (GgitTag  *tag);
 
 GType             ggit_tag_get_target_type      (GgitTag  *tag);
 
+GgitObject       *ggit_tag_peel                 (GgitTag  *tag,
+                                                 GError  **error);
+
 G_END_DECLS
 
 #endif /* __GGIT_TAG_H__ */