return 0;
}
-static int create_seq_dir(void)
+static int create_seq_dir(struct repository *r)
{
- if (file_exists(git_path_seq_dir())) {
- error(_("a cherry-pick or revert is already in progress"));
- advise(_("try \"git cherry-pick (--continue | --quit | --abort)\""));
+ enum replay_action action;
+ const char *in_progress_error = NULL;
+ const char *in_progress_advice = NULL;
+
+ if (!sequencer_get_last_command(r, &action)) {
+ switch (action) {
+ case REPLAY_REVERT:
+ in_progress_error = _("revert is already in progress");
+ in_progress_advice =
+ _("try \"git revert (--continue | --abort | --quit)\"");
+ break;
+ case REPLAY_PICK:
+ in_progress_error = _("cherry-pick is already in progress");
+ in_progress_advice =
+ _("try \"git cherry-pick (--continue | --abort | --quit)\"");
+ break;
+ default:
+ BUG("unexpected action in create_seq_dir");
+ }
+ }
+ if (in_progress_error) {
+ error("%s", in_progress_error);
+ if (advice_sequencer_in_use)
+ advise("%s", in_progress_advice);
return -1;
- } else if (mkdir(git_path_seq_dir(), 0777) < 0)
+ }
+ if (mkdir(git_path_seq_dir(), 0777) < 0)
return error_errno(_("could not create sequencer directory '%s'"),
git_path_seq_dir());
+
return 0;
}
return oideq(&actual_head, &expected_head);
}
-static int reset_for_rollback(const struct object_id *oid)
+static int reset_merge(const struct object_id *oid)
{
- const char *argv[4]; /* reset --merge <arg> + NULL */
+ int ret;
+ struct argv_array argv = ARGV_ARRAY_INIT;
- argv[0] = "reset";
- argv[1] = "--merge";
- argv[2] = oid_to_hex(oid);
- argv[3] = NULL;
- return run_command_v_opt(argv, RUN_GIT_CMD);
+ argv_array_pushl(&argv, "reset", "--merge", NULL);
+
+ if (!is_null_oid(oid))
+ argv_array_push(&argv, oid_to_hex(oid));
+
+ ret = run_command_v_opt(argv.argv, RUN_GIT_CMD);
+ argv_array_clear(&argv);
+
+ return ret;
}
static int rollback_single_pick(struct repository *r)
return error(_("cannot resolve HEAD"));
if (is_null_oid(&head_oid))
return error(_("cannot abort from a branch yet to be born"));
- return reset_for_rollback(&head_oid);
+ return reset_merge(&head_oid);
+}
+
+static int skip_single_pick(void)
+{
+ struct object_id head;
+
+ if (read_ref_full("HEAD", 0, &head, NULL))
+ return error(_("cannot resolve HEAD"));
+ return reset_merge(&head);
}
int sequencer_rollback(struct repository *r, struct replay_opts *opts)
warning(_("You seem to have moved HEAD. "
"Not rewinding, check your HEAD!"));
} else
- if (reset_for_rollback(&oid))
+ if (reset_merge(&oid))
goto fail;
strbuf_release(&buf);
return sequencer_remove_state(opts);
return -1;
}
+int sequencer_skip(struct repository *r, struct replay_opts *opts)
+{
+ enum replay_action action = -1;
+ sequencer_get_last_command(r, &action);
+
+ /*
+ * Check whether the subcommand requested to skip the commit is actually
+ * in progress and that it's safe to skip the commit.
+ *
+ * opts->action tells us which subcommand requested to skip the commit.
+ * If the corresponding .git/<ACTION>_HEAD exists, we know that the
+ * action is in progress and we can skip the commit.
+ *
+ * Otherwise we check that the last instruction was related to the
+ * particular subcommand we're trying to execute and barf if that's not
+ * the case.
+ *
+ * Finally we check that the rollback is "safe", i.e., has the HEAD
+ * moved? In this case, it doesn't make sense to "reset the merge" and
+ * "skip the commit" as the user already handled this by committing. But
+ * we'd not want to barf here, instead give advice on how to proceed. We
+ * only need to check that when .git/<ACTION>_HEAD doesn't exist because
+ * it gets removed when the user commits, so if it still exists we're
+ * sure the user can't have committed before.
+ */
+ switch (opts->action) {
+ case REPLAY_REVERT:
+ if (!file_exists(git_path_revert_head(r))) {
+ if (action != REPLAY_REVERT)
+ return error(_("no revert in progress"));
+ if (!rollback_is_safe())
+ goto give_advice;
+ }
+ break;
+ case REPLAY_PICK:
+ if (!file_exists(git_path_cherry_pick_head(r))) {
+ if (action != REPLAY_PICK)
+ return error(_("no cherry-pick in progress"));
+ if (!rollback_is_safe())
+ goto give_advice;
+ }
+ break;
+ default:
+ BUG("unexpected action in sequencer_skip");
+ }
+
+ if (skip_single_pick())
+ return error(_("failed to skip the commit"));
+ if (!is_directory(git_path_seq_dir()))
+ return 0;
+
+ return sequencer_continue(r, opts);
+
+give_advice:
+ error(_("there is nothing to skip"));
+
+ if (advice_resolve_conflict) {
+ advise(_("have you committed already?\n"
+ "try \"git %s --continue\""),
+ action == REPLAY_REVERT ? "revert" : "cherry-pick");
+ }
+ return -1;
+}
+
static int save_todo(struct todo_list *todo_list, struct replay_opts *opts)
{
struct lock_file todo_lock = LOCK_INIT;
rollback_lock_file(&lock);
ret = fast_forward_to(r, &commit->object.oid,
&head_commit->object.oid, 0, opts);
+ if (flags & TODO_EDIT_MERGE_MSG) {
+ run_commit_flags |= AMEND_MSG;
+ goto fast_forward_edit;
+ }
goto leave_merge;
}
* value (a negative one would indicate that the `merge`
* command needs to be rescheduled).
*/
+ fast_forward_edit:
ret = !!run_git_commit(r, git_path_merge_msg(r), opts,
run_commit_flags);
*/
if (walk_revs_populate_todo(&todo_list, opts) ||
- create_seq_dir() < 0)
+ create_seq_dir(r) < 0)
return -1;
if (get_oid("HEAD", &oid) && (opts->action == REPLAY_REVERT))
return error(_("can't revert as initial commit"));