rebase -i: rewrite setup_reflog_action() in C

diff --git a/sequencer.c b/sequencer.c
index 960a9354445ad2204d5b2d976e648337766e8190..e48b37bc0e704a012945b2249776ac1ae617766c 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -3139,6 +3139,36 @@ static const char *reflog_message(struct replay_opts *opts,
        return buf.buf;
 }
 
+static int run_git_checkout(struct replay_opts *opts, const char *commit,
+                           const char *action)
+{
+       struct child_process cmd = CHILD_PROCESS_INIT;
+
+       cmd.git_cmd = 1;
+
+       argv_array_push(&cmd.args, "checkout");
+       argv_array_push(&cmd.args, commit);
+       argv_array_pushf(&cmd.env_array, GIT_REFLOG_ACTION "=%s", action);
+
+       if (opts->verbose)
+               return run_command(&cmd);
+       else
+               return run_command_silent_on_success(&cmd);
+}
+
+int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit)
+{
+       const char *action;
+
+       if (commit && *commit) {
+               action = reflog_message(opts, "start", "checkout %s", commit);
+               if (run_git_checkout(opts, commit, action))
+                       return error(_("could not checkout %s"), commit);
+       }
+
+       return 0;
+}
+
 static const char rescheduled_advice[] =
 N_("Could not execute the todo command\n"
 "\n"