More diff functionality (#629)

This PR adds

- The ability to apply a Diff object to the repo
- Support for git_apply_hunk_cb and git_apply_delta_cb callbacks in options for applying the diffs
- The ability to import a diff from a raw buffer (for example, one exported by ToBuf) into a Diff object associated with the repo
- Tests for the above

1 files changed, 6 insertions, 0 deletions

diff --git a/wrapper.c b/wrapper.c
index c4a5ff0..4308ae4 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -6,6 +6,12 @@
 
 typedef int (*gogit_submodule_cbk)(git_submodule *sm, const char *name, void *payload);
 
+void _go_git_populate_apply_cb(git_apply_options *options)
+{
+	options->delta_cb = (git_apply_delta_cb)deltaApplyCallback;
+	options->hunk_cb = (git_apply_hunk_cb)hunkApplyCallback;
+}
+
 void _go_git_populate_remote_cb(git_clone_options *opts)
 {
 	opts->remote_cb = (git_remote_create_cb)remoteCreateCallback;