[libgit2-glib] Add ggit_diff_get_delta

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

commit f4cfcd63c0c907297399f3d8ed699dd879ec8260
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Mon Aug 15 12:30:02 2016 +0200

    Add ggit_diff_get_delta

 libgit2-glib/ggit-diff.c |   23 +++++++++++++++++++++++
 libgit2-glib/ggit-diff.h |    3 +++
 2 files changed, 26 insertions(+), 0 deletions(-)
---
diff --git a/libgit2-glib/ggit-diff.c b/libgit2-glib/ggit-diff.c
index e36f3d4..7adb055 100644
--- a/libgit2-glib/ggit-diff.c
+++ b/libgit2-glib/ggit-diff.c
@@ -709,6 +709,29 @@ ggit_diff_get_num_deltas (GgitDiff *diff)
 }
 
 /**
+ * ggit_diff_get_delta:
+ * @diff: a #GgitDiff.
+ * @index: the index.
+ *
+ * Get the delta at the specified index.
+ *
+ * Returns: (transfer full): a #GgitDiffDelta.
+ *
+ **/
+GgitDiffDelta *
+ggit_diff_get_delta (GgitDiff *diff,
+                     gint      index)
+{
+       const git_diff_delta *delta;
+
+       g_return_val_if_fail (GGIT_IS_DIFF (diff), NULL);
+
+       delta = git_diff_get_delta (_ggit_native_get (diff), (size_t)index);
+
+       return _ggit_diff_delta_wrap (delta);
+}
+
+/**
  * ggit_diff_blobs:
  * @old_blob: (allow-none): a #GgitBlob to diff from.
  * @old_as_path: (allow-none): treat @old_blob as if it had this filename, or %NULL,
diff --git a/libgit2-glib/ggit-diff.h b/libgit2-glib/ggit-diff.h
index e2025c9..d6edeb3 100644
--- a/libgit2-glib/ggit-diff.h
+++ b/libgit2-glib/ggit-diff.h
@@ -90,6 +90,9 @@ gchar         *ggit_diff_format_email              (GgitDiff              *diff,
 
 gint           ggit_diff_get_num_deltas            (GgitDiff              *diff);
 
+GgitDiffDelta *ggit_diff_get_delta                 (GgitDiff              *diff,
+                                                    gint                   index);
+
 void           ggit_diff_blobs                     (GgitBlob              *old_blob,
                                                     const gchar           *old_as_path,
                                                     GgitBlob              *new_blob,