rebase -i: rewrite setup_reflog_action() in C
This rewrites (the misnamed) setup_reflog_action() from shell to C. The
new version is called prepare_branch_to_be_rebased().
A new command is added to rebase--helper.c, “checkout-base”, as well as
a new flag, “verbose”, to avoid silencing the output of the checkout
operation called by checkout_base_commit().
The function `run_git_checkout()` will also be used in the next commit,
therefore its code is not part of `checkout_base_commit()`.
The shell version is then stripped in favour of a call to the helper.
As $GIT_REFLOG_ACTION is no longer set at the first call of
checkout_onto(), a call to comment_for_reflog() is added at the
beginning of this function.
Signed-off-by: Alban Gruin <alban.gruin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/sequencer.c b/sequencer.c
index 960a935..e48b37b 100644
--- 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"
