From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ramkumar Ramachandra Subject: [PATCH 17/17] revert: Introduce --continue to continue the operation Date: Mon, 11 Jul 2011 14:54:08 +0000 Message-ID: <1310396048-24925-18-git-send-email-artagnon@gmail.com> References: <1310396048-24925-1-git-send-email-artagnon@gmail.com> Cc: Jonathan Nieder , Junio C Hamano , Christian Couder , Daniel Barkalow To: Git List X-From: git-owner@vger.kernel.org Mon Jul 11 16:55:17 2011 Return-path: Envelope-to: gcvg-git-2@lo.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QgHtE-0005dD-O7 for gcvg-git-2@lo.gmane.org; Mon, 11 Jul 2011 16:55:17 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757885Ab1GKOyq (ORCPT ); Mon, 11 Jul 2011 10:54:46 -0400 Received: from mail-vx0-f174.google.com ([209.85.220.174]:46637 "EHLO mail-vx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757878Ab1GKOyl (ORCPT ); Mon, 11 Jul 2011 10:54:41 -0400 Received: by mail-vx0-f174.google.com with SMTP id 39so2716724vxb.19 for ; Mon, 11 Jul 2011 07:54:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=aGfnSGbqou/QNrMzYj7igRYFZozRa70SueVjoN8rLI8=; b=SOZhTmXSOi4puLTuS3eu3lUJR7/F479p2X8+2unvtpKmGN/xrb+elyELvVJK3iIs1f iQt7MLnkcKkEM3X4C4FIzAX9Qin26rE2WH/hyvnBEpkfYAAmWjoTbL7svDuxFDGRBa1k uLpFXhEisvu3oVaG03exsSJh8gpiR4qYsMc+Q= Received: by 10.52.175.162 with SMTP id cb2mr2230385vdc.432.1310396080712; Mon, 11 Jul 2011 07:54:40 -0700 (PDT) Received: from localhost.localdomain (ec2-184-72-137-52.compute-1.amazonaws.com [184.72.137.52]) by mx.google.com with ESMTPS id b9sm4510527vdk.25.2011.07.11.07.54.39 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 11 Jul 2011 07:54:39 -0700 (PDT) X-Mailer: git-send-email 1.7.5.1 In-Reply-To: <1310396048-24925-1-git-send-email-artagnon@gmail.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Using the information in ".git/sequencer", it is now possible to continue a cherry-pick or continue after a conflict. To do this, we have to parse the information in ".git/sequencer/opts" into the replay_opts structure and build a commit_list from the information in ".git/sequencer/todo" before calling into the cherry-picking machinery. Introduce a new subcommand called '--continue' to facilitate this. It is imperative to note that this subcommand will blindly drop the first instruction and attempt to perform the rest of the instructions in ".git/sequencer/todo" to affect the current HEAD provided that the index matches HEAD. The resulting end-user workflow is as follows: $ git cherry-pick foo..bar ... conflict in commit moo ... $ git cherry-pick --continue error: 'cherry-pick' is not possible because you have unmerged files. ... $ echo "resolved" >conflictingfile $ git commit # this is a replacement for "moo" $ git cherry-pick --continue # drops "moo" and replays everything else During the "git commit" stage, CHERRY_PICK_HEAD will aid by providing the commit message from the conflicting "moo" commit. Note that the cherry-pick mechanism has no control at this stage, so the user is free to violate anything that was specified during the first cherry-pick invocation. For example, if "-x" was specified during the first cherry-pick invocation, the user is free to edit out the message during commit time. One glitch to note is that the "--signoff" option specified at cherry-pick invocation time is not reflected in the commit message provided by CHERRY_PICK_HEAD; the user must take care to add "--signoff" during the "git commit" invocation. Signed-off-by: Ramkumar Ramachandra --- Documentation/git-cherry-pick.txt | 1 + Documentation/git-revert.txt | 1 + Documentation/sequencer.txt | 5 ++ builtin/revert.c | 60 ++++++++++++++++++++++-- t/t3510-cherry-pick-sequence.sh | 93 +++++++++++++++++++++++++++++++++++++ 5 files changed, 156 insertions(+), 4 deletions(-) diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt index 138a292..663186b 100644 --- a/Documentation/git-cherry-pick.txt +++ b/Documentation/git-cherry-pick.txt @@ -9,6 +9,7 @@ SYNOPSIS -------- 'git cherry-pick' [--edit] [-n] [-m parent-number] [-s] [-x] [--ff] ... 'git cherry-pick' --reset +'git cherry-pick' --continue DESCRIPTION ----------- diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt index 783ffb4..9be2fe2 100644 --- a/Documentation/git-revert.txt +++ b/Documentation/git-revert.txt @@ -9,6 +9,7 @@ SYNOPSIS -------- 'git revert' [--edit | --no-edit] [-n] [-m parent-number] [-s] ... 'git revert' --reset +'git revert' --continue DESCRIPTION ----------- diff --git a/Documentation/sequencer.txt b/Documentation/sequencer.txt index 16ce88c..3e6df33 100644 --- a/Documentation/sequencer.txt +++ b/Documentation/sequencer.txt @@ -2,3 +2,8 @@ Forget about the current operation in progress. Can be used to clear the sequencer state after a failed cherry-pick or revert. + +--continue:: + Continue the operation in progress using the information in + '.git/sequencer'. Can be used to continue after resolving + conflicts in a failed cherry-pick or revert. diff --git a/builtin/revert.c b/builtin/revert.c index 409d88f..f974ee0 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -41,7 +41,7 @@ static const char * const cherry_pick_usage[] = { static const char *me; enum replay_action { REVERT, CHERRY_PICK }; -enum replay_subcommand { REPLAY_NONE, REPLAY_RESET }; +enum replay_subcommand { REPLAY_NONE, REPLAY_RESET, REPLAY_CONTINUE }; struct replay_opts { enum replay_action action; @@ -104,13 +104,39 @@ static void verify_opt_compatible(const char *me, const char *base_opt, ...) va_end(ap); } +static void verify_opt_mutually_compatible(const char *me, ...) +{ + const char *opt1, *opt2; + va_list ap; + int set; + + va_start(ap, me); + while ((opt1 = va_arg(ap, const char *))) { + set = va_arg(ap, int); + if (set) + break; + } + if (!opt1) + goto ok; + while ((opt2 = va_arg(ap, const char *))) { + set = va_arg(ap, int); + if (set) + die(_("%s: %s cannot be used with %s"), + me, opt1, opt2); + } +ok: + va_end(ap); +} + static void parse_args(int argc, const char **argv, struct replay_opts *opts) { const char * const * usage_str = revert_or_cherry_pick_usage(opts); int noop; int reset = 0; + int contin = 0; struct option options[] = { OPT_BOOLEAN(0, "reset", &reset, "forget the current operation"), + OPT_BOOLEAN(0, "continue", &contin, "continue the current operation"), OPT_BOOLEAN('n', "no-commit", &opts->no_commit, "don't automatically commit"), OPT_BOOLEAN('e', "edit", &opts->edit, "edit the commit message"), { OPTION_BOOLEAN, 'r', NULL, &noop, NULL, "no-op (backward compatibility)", @@ -140,15 +166,29 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN); + /* Check for incompatible subcommands */ + verify_opt_mutually_compatible(me, + "--reset", reset, + "--continue", contin, + NULL); + /* Set the subcommand */ if (reset) opts->subcommand = REPLAY_RESET; + else if (contin) + opts->subcommand = REPLAY_CONTINUE; else opts->subcommand = REPLAY_NONE; /* Check for incompatible command line arguments */ - if (opts->subcommand == REPLAY_RESET) { - verify_opt_compatible(me, "--reset", + if (opts->subcommand != REPLAY_NONE) { + char *this_operation; + if (opts->subcommand == REPLAY_RESET) + this_operation = "--reset"; + else + this_operation = "--continue"; + + verify_opt_compatible(me, this_operation, "--no-commit", opts->no_commit, "--signoff", opts->signoff, "--mainline", opts->mainline, @@ -1051,6 +1091,15 @@ static int process_subcommand(struct replay_opts *opts) if (opts->subcommand == REPLAY_RESET) { remove_sequencer_state(1); return 0; + } else if (opts->subcommand == REPLAY_CONTINUE) { + if (!file_exists(git_path(SEQ_TODO_FILE))) + goto error; + read_populate_opts(&opts); + read_populate_todo(&todo_list, opts); + + /* Verify that the conflict has been resolved */ + if (!index_differs_from("HEAD", 0)) + todo_list = todo_list->next; } else { /* * Start a new cherry-pick/ revert sequence; but @@ -1059,7 +1108,8 @@ static int process_subcommand(struct replay_opts *opts) */ if (file_exists(git_path(SEQ_TODO_FILE))) { error(_("A %s is already in progress"), me); - advise(_("Use %s --reset to forget about it"), me); + advise(_("Use %s --continue to continue the operation"), me); + advise(_("or use %s --reset to forget about it"), me); return -1; } @@ -1071,6 +1121,8 @@ static int process_subcommand(struct replay_opts *opts) save_todo(todo_list, opts); } return pick_commits(todo_list, opts); +error: + return error(_("No %s in progress"), me); } int cmd_revert(int argc, const char **argv, const char *prefix) diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh index c21b345..635a45e 100755 --- a/t/t3510-cherry-pick-sequence.sh +++ b/t/t3510-cherry-pick-sequence.sh @@ -101,4 +101,97 @@ test_expect_success '--reset cleans up sequencer state' ' test_path_is_missing .git/sequencer ' +test_expect_success '--continue complains when no cherry-pick is in progress' ' + pristine_detach initial && + test_must_fail git cherry-pick --continue >actual 2>&1 && + test_i18ngrep "error" actual +' + +test_expect_success '--continue complains when there are unresolved conflicts' ' + pristine_detach initial && + head=$(git rev-parse HEAD) && + test_must_fail git cherry-pick base..picked && + test_must_fail git cherry-pick --continue && + git cherry-pick --reset +' + +test_expect_success '--continue continues after conflicts are resolved' ' + pristine_detach initial && + head=$(git rev-parse HEAD) && + test_must_fail git cherry-pick base..anotherpick && + echo "c" >foo && + git add foo && + git commit && + git cherry-pick --continue && + test_path_is_missing .git/sequencer && + { + git rev-list HEAD | + git diff-tree --root --stdin | + sed "s/[0-9a-f]\{40\}/OBJID/g" + } >actual && + cat >expect <<-\EOF && + OBJID + :100644 100644 OBJID OBJID M foo + OBJID + :100644 100644 OBJID OBJID M foo + OBJID + :100644 100644 OBJID OBJID M unrelated + OBJID + :000000 100644 OBJID OBJID A foo + :000000 100644 OBJID OBJID A unrelated + EOF + test_cmp expect actual +' + +test_expect_success '--continue respects opts' ' + pristine_detach initial && + head=$(git rev-parse HEAD) && + test_must_fail git cherry-pick -s -x base..anotherpick && + echo "c" >foo && + git add foo && + git commit -s && + git cherry-pick --continue && + test_path_is_missing .git/sequencer && + git cat-file commit HEAD >anotherpick_msg && + git cat-file commit HEAD~1 >picked_msg && + git cat-file commit HEAD~2 >unrelatedpick_msg && + git cat-file commit HEAD~3 >initial_msg && + test_must_fail test_i18ngrep "Signed-off-by:" initial_msg && + test_i18ngrep "Signed-off-by:" unrelatedpick_msg && + test_i18ngrep "Signed-off-by:" picked_msg && + test_i18ngrep "Signed-off-by:" anotherpick_msg && + test_must_fail test_i18ngrep "cherry picked from" initial_msg && + test_i18ngrep "cherry picked from" unrelatedpick_msg && + test_i18ngrep "cherry picked from" picked_msg && + test_i18ngrep "cherry picked from" anotherpick_msg +' + +test_expect_success 'malformed instruction sheet 1' ' + pristine_detach initial && + head=$(git rev-parse HEAD) && + test_must_fail git cherry-pick base..picked && + echo "resolved" >foo && + git add foo && + git commit && + sed "s/pick /pick/" .git/sequencer/todo >new_sheet + cp new_sheet .git/sequencer/todo + test_must_fail git cherry-pick --continue >actual 2>&1 && + git cherry-pick --reset && + test_i18ngrep "fatal" actual +' + +test_expect_success 'malformed instruction sheet 2' ' + pristine_detach initial && + head=$(git rev-parse HEAD) && + test_must_fail git cherry-pick base..picked && + echo "resolved" >foo && + git add foo && + git commit && + sed "s/pick/revert/" .git/sequencer/todo >new_sheet + cp new_sheet .git/sequencer/todo + test_must_fail git cherry-pick --continue >actual 2>&1 && + git cherry-pick --reset && + test_i18ngrep "fatal" actual +' + test_done -- 1.7.5.GIT