diff options
| -rw-r--r-- | Documentation/git-cherry-pick.txt | 1 | ||||
| -rw-r--r-- | Documentation/git-revert.txt | 1 | ||||
| -rw-r--r-- | Documentation/sequencer.txt | 3 | ||||
| -rw-r--r-- | builtin/revert.c | 87 | ||||
| -rwxr-xr-x | t/t3510-cherry-pick-sequence.sh | 96 |
5 files changed, 185 insertions, 3 deletions
diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt index 21998b820e..fed5097e00 100644 --- a/Documentation/git-cherry-pick.txt +++ b/Documentation/git-cherry-pick.txt @@ -11,6 +11,7 @@ SYNOPSIS 'git cherry-pick' [--edit] [-n] [-m parent-number] [-s] [-x] [--ff] <commit>... 'git cherry-pick' --continue 'git cherry-pick' --quit +'git cherry-pick' --abort DESCRIPTION ----------- diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt index b0fcabc8b6..b699a3458e 100644 --- a/Documentation/git-revert.txt +++ b/Documentation/git-revert.txt @@ -11,6 +11,7 @@ SYNOPSIS 'git revert' [--edit | --no-edit] [-n] [-m parent-number] [-s] <commit>... 'git revert' --continue 'git revert' --quit +'git revert' --abort DESCRIPTION ----------- diff --git a/Documentation/sequencer.txt b/Documentation/sequencer.txt index 75f8e869e8..5747f442f2 100644 --- a/Documentation/sequencer.txt +++ b/Documentation/sequencer.txt @@ -7,3 +7,6 @@ Forget about the current operation in progress. Can be used to clear the sequencer state after a failed cherry-pick or revert. + +--abort:: + Cancel the operation and return to the pre-sequence state. diff --git a/builtin/revert.c b/builtin/revert.c index f5ba67a505..70a5fbb672 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -40,7 +40,12 @@ static const char * const cherry_pick_usage[] = { }; enum replay_action { REVERT, CHERRY_PICK }; -enum replay_subcommand { REPLAY_NONE, REPLAY_REMOVE_STATE, REPLAY_CONTINUE }; +enum replay_subcommand { + REPLAY_NONE, + REPLAY_REMOVE_STATE, + REPLAY_CONTINUE, + REPLAY_ROLLBACK +}; struct replay_opts { enum replay_action action; @@ -135,9 +140,11 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) const char *me = action_name(opts); int remove_state = 0; int contin = 0; + int rollback = 0; struct option options[] = { OPT_BOOLEAN(0, "quit", &remove_state, "end revert or cherry-pick sequence"), OPT_BOOLEAN(0, "continue", &contin, "resume revert or cherry-pick sequence"), + OPT_BOOLEAN(0, "abort", &rollback, "cancel revert or cherry-pick sequence"), OPT_BOOLEAN('n', "no-commit", &opts->no_commit, "don't automatically commit"), OPT_BOOLEAN('e', "edit", &opts->edit, "edit the commit message"), OPT_NOOP_NOARG('r', NULL), @@ -173,6 +180,7 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) verify_opt_mutually_compatible(me, "--quit", remove_state, "--continue", contin, + "--abort", rollback, NULL); /* Set the subcommand */ @@ -180,6 +188,8 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) opts->subcommand = REPLAY_REMOVE_STATE; else if (contin) opts->subcommand = REPLAY_CONTINUE; + else if (rollback) + opts->subcommand = REPLAY_ROLLBACK; else opts->subcommand = REPLAY_NONE; @@ -188,8 +198,12 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) char *this_operation; if (opts->subcommand == REPLAY_REMOVE_STATE) this_operation = "--quit"; - else + else if (opts->subcommand == REPLAY_CONTINUE) this_operation = "--continue"; + else { + assert(opts->subcommand == REPLAY_ROLLBACK); + this_operation = "--abort"; + } verify_opt_compatible(me, this_operation, "--no-commit", opts->no_commit, @@ -850,7 +864,7 @@ static int create_seq_dir(void) if (file_exists(seq_dir)) { error(_("a cherry-pick or revert is already in progress")); - advise(_("try \"git cherry-pick (--continue | --quit)\"")); + advise(_("try \"git cherry-pick (--continue | --quit | --abort)\"")); return -1; } else if (mkdir(seq_dir, 0777) < 0) @@ -873,6 +887,71 @@ static void save_head(const char *head) die(_("Error wrapping up %s."), head_file); } +static int reset_for_rollback(const unsigned char *sha1) +{ + const char *argv[4]; /* reset --merge <arg> + NULL */ + argv[0] = "reset"; + argv[1] = "--merge"; + argv[2] = sha1_to_hex(sha1); + argv[3] = NULL; + return run_command_v_opt(argv, RUN_GIT_CMD); +} + +static int rollback_single_pick(void) +{ + unsigned char head_sha1[20]; + + if (!file_exists(git_path("CHERRY_PICK_HEAD")) && + !file_exists(git_path("REVERT_HEAD"))) + return error(_("no cherry-pick or revert in progress")); + if (!resolve_ref("HEAD", head_sha1, 0, NULL)) + return error(_("cannot resolve HEAD")); + if (is_null_sha1(head_sha1)) + return error(_("cannot abort from a branch yet to be born")); + return reset_for_rollback(head_sha1); +} + +static int sequencer_rollback(struct replay_opts *opts) +{ + const char *filename; + FILE *f; + unsigned char sha1[20]; + struct strbuf buf = STRBUF_INIT; + + filename = git_path(SEQ_HEAD_FILE); + f = fopen(filename, "r"); + if (!f && errno == ENOENT) { + /* + * There is no multiple-cherry-pick in progress. + * If CHERRY_PICK_HEAD or REVERT_HEAD indicates + * a single-cherry-pick in progress, abort that. + */ + return rollback_single_pick(); + } + if (!f) + return error(_("cannot open %s: %s"), filename, + strerror(errno)); + if (strbuf_getline(&buf, f, '\n')) { + error(_("cannot read %s: %s"), filename, ferror(f) ? + strerror(errno) : _("unexpected end of file")); + goto fail; + } + if (get_sha1_hex(buf.buf, sha1) || buf.buf[40] != '\0') { + error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"), + filename); + goto fail; + } + if (reset_for_rollback(sha1)) + goto fail; + strbuf_release(&buf); + fclose(f); + return 0; +fail: + strbuf_release(&buf); + fclose(f); + return -1; +} + static void save_todo(struct commit_list *todo_list, struct replay_opts *opts) { const char *todo_file = git_path(SEQ_TODO_FILE); @@ -977,6 +1056,8 @@ static int pick_revisions(struct replay_opts *opts) remove_sequencer_state(1); return 0; } + if (opts->subcommand == REPLAY_ROLLBACK) + return sequencer_rollback(opts); if (opts->subcommand == REPLAY_CONTINUE) { if (!file_exists(git_path(SEQ_TODO_FILE))) return error(_("No %s in progress"), action_name(opts)); diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh index bb67cdcb5d..e97397f96b 100755 --- a/t/t3510-cherry-pick-sequence.sh +++ b/t/t3510-cherry-pick-sequence.sh @@ -2,6 +2,7 @@ test_description='Test cherry-pick continuation features + + yetanotherpick: rewrites foo to e + anotherpick: rewrites foo to d + picked: rewrites foo to c + unrelatedpick: rewrites unrelated to reallyunrelated @@ -19,6 +20,12 @@ pristine_detach () { git clean -d -f -f -q -x } +test_cmp_rev () { + git rev-parse --verify "$1" >expect.rev && + git rev-parse --verify "$2" >actual.rev && + test_cmp expect.rev actual.rev +} + test_expect_success setup ' echo unrelated >unrelated && git add unrelated && @@ -27,6 +34,7 @@ test_expect_success setup ' test_commit unrelatedpick unrelated reallyunrelated && test_commit picked foo c && test_commit anotherpick foo d && + test_commit yetanotherpick foo e && git config advice.detachedhead false ' @@ -75,6 +83,11 @@ test_expect_success '--quit does not complain when no cherry-pick is in progress git cherry-pick --quit ' +test_expect_success '--abort requires cherry-pick in progress' ' + pristine_detach initial && + test_must_fail git cherry-pick --abort +' + test_expect_success '--quit cleans up sequencer state' ' pristine_detach initial && test_must_fail git cherry-pick base..picked && @@ -103,6 +116,79 @@ test_expect_success 'cherry-pick --reset (another name for --quit)' ' test_cmp expect actual ' +test_expect_success '--abort to cancel multiple cherry-pick' ' + pristine_detach initial && + test_must_fail git cherry-pick base..anotherpick && + git cherry-pick --abort && + test_path_is_missing .git/sequencer && + test_cmp_rev initial HEAD && + git update-index --refresh && + git diff-index --exit-code HEAD +' + +test_expect_success '--abort to cancel single cherry-pick' ' + pristine_detach initial && + test_must_fail git cherry-pick picked && + git cherry-pick --abort && + test_path_is_missing .git/sequencer && + test_cmp_rev initial HEAD && + git update-index --refresh && + git diff-index --exit-code HEAD +' + +test_expect_success 'cherry-pick --abort to cancel multiple revert' ' + pristine_detach anotherpick && + test_must_fail git revert base..picked && + git cherry-pick --abort && + test_path_is_missing .git/sequencer && + test_cmp_rev anotherpick HEAD && + git update-index --refresh && + git diff-index --exit-code HEAD +' + +test_expect_success 'revert --abort works, too' ' + pristine_detach anotherpick && + test_must_fail git revert base..picked && + git revert --abort && + test_path_is_missing .git/sequencer && + test_cmp_rev anotherpick HEAD +' + +test_expect_success '--abort to cancel single revert' ' + pristine_detach anotherpick && + test_must_fail git revert picked && + git revert --abort && + test_path_is_missing .git/sequencer && + test_cmp_rev anotherpick HEAD && + git update-index --refresh && + git diff-index --exit-code HEAD +' + +test_expect_success '--abort keeps unrelated change, easy case' ' + pristine_detach unrelatedpick && + echo changed >expect && + test_must_fail git cherry-pick picked..yetanotherpick && + echo changed >unrelated && + git cherry-pick --abort && + test_cmp expect unrelated +' + +test_expect_success '--abort refuses to clobber unrelated change, harder case' ' + pristine_detach initial && + echo changed >expect && + test_must_fail git cherry-pick base..anotherpick && + echo changed >unrelated && + test_must_fail git cherry-pick --abort && + test_cmp expect unrelated && + git rev-list HEAD >log && + test_line_count = 2 log && + test_must_fail git update-index --refresh && + + git checkout unrelated && + git cherry-pick --abort && + test_cmp_rev initial HEAD +' + test_expect_success 'cherry-pick cleans up sequencer state when one commit is left' ' pristine_detach initial && test_must_fail git cherry-pick base..picked && @@ -127,6 +213,16 @@ test_expect_success 'cherry-pick cleans up sequencer state when one commit is le test_cmp expect actual ' +test_expect_failure '--abort after last commit in sequence' ' + pristine_detach initial && + test_must_fail git cherry-pick base..picked && + git cherry-pick --abort && + test_path_is_missing .git/sequencer && + test_cmp_rev initial HEAD && + git update-index --refresh && + git diff-index --exit-code HEAD +' + test_expect_success 'cherry-pick does not implicitly stomp an existing operation' ' pristine_detach initial && test_must_fail git cherry-pick base..anotherpick && |