[PATCH v3 5/9] sequencer: run post-rewrite hook

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As we should.

Signed-off-by: Felipe Contreras <felipe.contreras@xxxxxxxxx>
---
 sequencer.c | 42 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

diff --git a/sequencer.c b/sequencer.c
index 76ff2ff..74480d7 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -127,6 +127,37 @@ static void add_rewritten(unsigned char *from, unsigned char *to)
 	rewritten.nr++;
 }
 
+static void run_rewrite_hook(const char *name)
+{
+	struct strbuf buf = STRBUF_INIT;
+	struct child_process proc;
+	const char *argv[3];
+	int code, i;
+
+	argv[0] = find_hook("post-rewrite");
+	if (!argv[0])
+		return;
+
+	argv[1] = name;
+	argv[2] = NULL;
+
+	memset(&proc, 0, sizeof(proc));
+	proc.argv = argv;
+	proc.in = -1;
+	proc.stdout_to_stderr = 1;
+
+	code = start_command(&proc);
+	if (code)
+		return;
+	for (i = 0; i < rewritten.nr; i++) {
+		struct rewritten_list_item *item = &rewritten.items[i];
+		strbuf_addf(&buf, "%s %s\n", sha1_to_hex(item->from), sha1_to_hex(item->to));
+	}
+	write_in_full(proc.in, buf.buf, buf.len);
+	close(proc.in);
+	finish_command(&proc);
+}
+
 static void remove_sequencer_state(void)
 {
 	struct strbuf seq_dir = STRBUF_INIT;
@@ -1100,6 +1131,9 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
 		}
 	}
 
+	if (opts->action == REPLAY_PICK)
+		run_rewrite_hook("cherry-pick");
+
 	/*
 	 * Sequence of picks finished successfully; cleanup by
 	 * removing the .git/sequencer directory
@@ -1149,8 +1183,14 @@ static int sequencer_continue(struct replay_opts *opts)
 
 static int single_pick(struct commit *cmit, struct replay_opts *opts)
 {
+	int ret;
 	setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
-	return do_pick_commit(cmit, opts);
+	ret = do_pick_commit(cmit, opts);
+	if (ret)
+		return ret;
+	if (opts->action == REPLAY_PICK)
+		run_rewrite_hook("cherry-pick");
+	return 0;
 }
 
 int sequencer_pick_revisions(struct replay_opts *opts)
-- 
1.8.3.698.g079b096

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