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From: Alban Gruin <alban.gruin@gmail.com>
To: git@vger.kernel.org
Cc: Stefan Beller <sbeller@google.com>,
	Christian Couder <christian.couder@gmail.com>,
	Pratik Karki <predatoramigo@gmail.com>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	phillip.wood@dunelm.org.uk, Alban Gruin <alban.gruin@gmail.com>
Subject: [GSoC][PATCH v5 2/3] rebase -i: rewrite setup_reflog_action() in C
Date: Fri, 29 Jun 2018 17:14:34 +0200	[thread overview]
Message-ID: <20180629151435.31868-3-alban.gruin@gmail.com> (raw)
In-Reply-To: <20180629151435.31868-1-alban.gruin@gmail.com>

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>
---
 builtin/rebase--helper.c   |  9 +++++++--
 git-rebase--interactive.sh | 16 ++--------------
 sequencer.c                | 31 +++++++++++++++++++++++++++++++
 sequencer.h                |  3 +++
 4 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/builtin/rebase--helper.c b/builtin/rebase--helper.c
index 731a64971..6c789e78b 100644
--- a/builtin/rebase--helper.c
+++ b/builtin/rebase--helper.c
@@ -13,12 +13,12 @@ static const char * const builtin_rebase_helper_usage[] = {
 int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
 {
 	struct replay_opts opts = REPLAY_OPTS_INIT;
-	unsigned flags = 0, keep_empty = 0, rebase_merges = 0;
+	unsigned flags = 0, keep_empty = 0, rebase_merges = 0, verbose = 0;
 	int abbreviate_commands = 0, rebase_cousins = -1;
 	enum {
 		CONTINUE = 1, ABORT, MAKE_SCRIPT, SHORTEN_OIDS, EXPAND_OIDS,
 		CHECK_TODO_LIST, SKIP_UNNECESSARY_PICKS, REARRANGE_SQUASH,
-		ADD_EXEC, APPEND_TODO_HELP, EDIT_TODO
+		ADD_EXEC, APPEND_TODO_HELP, EDIT_TODO, PREPARE_BRANCH
 	} command = 0;
 	struct option options[] = {
 		OPT_BOOL(0, "ff", &opts.allow_ff, N_("allow fast-forward")),
@@ -28,6 +28,7 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
 		OPT_BOOL(0, "rebase-merges", &rebase_merges, N_("rebase merge commits")),
 		OPT_BOOL(0, "rebase-cousins", &rebase_cousins,
 			 N_("keep original branch points of cousins")),
+		OPT__VERBOSE(&verbose, N_("be verbose")),
 		OPT_CMDMODE(0, "continue", &command, N_("continue rebase"),
 				CONTINUE),
 		OPT_CMDMODE(0, "abort", &command, N_("abort rebase"),
@@ -51,6 +52,8 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
 		OPT_CMDMODE(0, "edit-todo", &command,
 			    N_("edit the todo list during an interactive rebase"),
 			    EDIT_TODO),
+		OPT_CMDMODE(0, "prepare-branch", &command,
+			    N_("prepare the branch to be rebased"), PREPARE_BRANCH),
 		OPT_END()
 	};
 
@@ -94,5 +97,7 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
 		return !!append_todo_help(0, keep_empty);
 	if (command == EDIT_TODO && argc == 1)
 		return !!edit_todo_list(flags);
+	if (command == PREPARE_BRANCH && argc == 2)
+		return !!prepare_branch_to_be_rebased(&opts, argv[1], verbose);
 	usage_with_options(builtin_rebase_helper_usage, options);
 }
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 2defe607f..77e972bb6 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -72,6 +72,7 @@ collapse_todo_ids() {
 
 # Switch to the branch in $into and notify it in the reflog
 checkout_onto () {
+	comment_for_reflog start
 	GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
 	output git checkout $onto || die_abort "$(gettext "could not detach HEAD")"
 	git update-ref ORIG_HEAD $orig_head
@@ -119,19 +120,6 @@ initiate_action () {
 	esac
 }
 
-setup_reflog_action () {
-	comment_for_reflog start
-
-	if test ! -z "$switch_to"
-	then
-		GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to"
-		output git checkout "$switch_to" -- ||
-			die "$(eval_gettext "Could not checkout \$switch_to")"
-
-		comment_for_reflog start
-	fi
-}
-
 init_basic_state () {
 	orig_head=$(git rev-parse --verify HEAD) || die "$(gettext "No HEAD?")"
 	mkdir -p "$state_dir" || die "$(eval_gettext "Could not create temporary \$state_dir")"
@@ -211,7 +199,7 @@ git_rebase__interactive () {
 		return 0
 	fi
 
-	setup_reflog_action
+	git rebase--helper --prepare-branch "$switch_to" ${verbose:+--verbose}
 	init_basic_state
 
 	init_revisions_and_shortrevisions
diff --git a/sequencer.c b/sequencer.c
index d9545b366..dd0cf3cb5 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -3134,6 +3134,37 @@ static const char *reflog_message(struct replay_opts *opts,
 	return buf.buf;
 }
 
+static int run_git_checkout(struct replay_opts *opts, const char *commit,
+				int verbose, 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 (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,
+				 int verbose)
+{
+	const char *action;
+
+	if (commit && *commit) {
+		action = reflog_message(opts, "start", "checkout %s", commit);
+		if (run_git_checkout(opts, commit, verbose, action))
+			return error(_("Could not checkout %s"), commit);
+	}
+
+	return 0;
+}
+
 static const char rescheduled_advice[] =
 N_("Could not execute the todo command\n"
 "\n"
diff --git a/sequencer.h b/sequencer.h
index ffab798f1..3821420b0 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -106,6 +106,9 @@ int update_head_with_reflog(const struct commit *old_head,
 void commit_post_rewrite(const struct commit *current_head,
 			 const struct object_id *new_head);
 
+int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit,
+				 int verbose);
+
 #define SUMMARY_INITIAL_COMMIT   (1 << 0)
 #define SUMMARY_SHOW_AUTHOR_DATE (1 << 1)
 void print_commit_summary(const char *prefix, const struct object_id *oid,
-- 
2.18.0


  parent reply	other threads:[~2018-06-29 15:15 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-18 13:18 [GSoC][PATCH 0/3] rebase -i: rewrite reflog operations in C Alban Gruin
2018-06-18 13:18 ` [GSoC][PATCH 1/3] sequencer: add a new function to silence a command, except if it fails Alban Gruin
2018-06-18 15:26   ` Phillip Wood
2018-06-18 16:46     ` Alban Gruin
2018-06-18 16:26   ` Christian Couder
2018-06-18 17:05     ` Alban Gruin
2018-06-18 13:18 ` [GSoC][PATCH 2/3] rebase -i: rewrite setup_reflog_action() in C Alban Gruin
2018-06-18 15:34   ` Phillip Wood
2018-06-18 17:04     ` Alban Gruin
2018-06-18 22:01   ` Stefan Beller
2018-06-19  6:51     ` Johannes Schindelin
2018-06-18 13:18 ` [GSoC][PATCH 3/3] rebase -i: rewrite checkout_onto() " Alban Gruin
2018-06-18 16:09   ` Phillip Wood
2018-06-18 17:04     ` Alban Gruin
2018-06-19 15:44 ` [GSoC][PATCH v2 0/3] rebase -i: rewrite reflog operations " Alban Gruin
2018-06-19 15:44   ` [GSoC][PATCH v2 1/3] sequencer: add a new function to silence a command, except if it fails Alban Gruin
2018-06-21  9:37     ` Johannes Schindelin
2018-06-21 11:53       ` Alban Gruin
2018-06-19 15:44   ` [GSoC][PATCH v2 2/3] rebase -i: rewrite setup_reflog_action() in C Alban Gruin
2018-06-21 10:34     ` Johannes Schindelin
2018-06-19 15:44   ` [GSoC][PATCH v2 3/3] rebase -i: rewrite checkout_onto() " Alban Gruin
2018-06-21 10:38     ` Johannes Schindelin
2018-06-19 18:35   ` [GSoC][PATCH v2 0/3] rebase -i: rewrite reflog operations " Stefan Beller
2018-06-21  8:39   ` Johannes Schindelin
2018-06-21 14:17   ` [GSoC][PATCH v3 " Alban Gruin
2018-06-21 14:17     ` [GSoC][PATCH v3 1/3] sequencer: add a new function to silence a command, except if it fails Alban Gruin
2018-06-21 22:03       ` Junio C Hamano
2018-06-22 20:47         ` Alban Gruin
2018-06-21 14:17     ` [GSoC][PATCH v3 2/3] rebase -i: rewrite setup_reflog_action() in C Alban Gruin
2018-06-22 16:27       ` Junio C Hamano
2018-06-22 20:48         ` Alban Gruin
2018-06-25 15:34           ` Junio C Hamano
2018-06-25 18:21             ` Alban Gruin
2018-06-25 21:14               ` Johannes Schindelin
2018-06-26  9:13                 ` Pratik Karki
2018-06-26 17:44               ` Junio C Hamano
2018-06-21 14:17     ` [GSoC][PATCH v3 3/3] rebase -i: rewrite checkout_onto() " Alban Gruin
2018-06-25 13:44     ` [GSoC][PATCH v4 0/3] rebase -i: rewrite reflog operations " Alban Gruin
2018-06-25 13:44       ` [GSoC][PATCH v4 1/3] sequencer: extract a function to silence a command, except if it fails Alban Gruin
2018-06-25 13:44       ` [GSoC][PATCH v4 2/3] rebase -i: rewrite checkout_onto() in C Alban Gruin
2018-06-26 17:35         ` Junio C Hamano
2018-06-25 13:44       ` [GSoC][PATCH v4 3/3] rebase -i: rewrite setup_reflog_action() " Alban Gruin
2018-06-29 15:14       ` [GSoC][PATCH v5 0/3] rebase -i: rewrite reflog operations " Alban Gruin
2018-06-29 15:14         ` [GSoC][PATCH v5 1/3] sequencer: add a new function to silence a command, except if it fails Alban Gruin
2018-06-29 15:14         ` Alban Gruin [this message]
2018-06-29 16:50           ` [GSoC][PATCH v5 2/3] rebase -i: rewrite setup_reflog_action() in C Junio C Hamano
2018-06-29 15:14         ` [GSoC][PATCH v5 3/3] rebase -i: rewrite checkout_onto() " Alban Gruin
2018-06-29 16:55         ` [GSoC][PATCH v5 0/3] rebase -i: rewrite reflog operations " Junio C Hamano
2018-06-29 18:23           ` Junio C Hamano
2018-07-02 10:36             ` Alban Gruin
2018-07-03 18:15               ` Junio C Hamano

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