diff options
Diffstat (limited to 'builtin/revert.c')
| -rw-r--r-- | builtin/revert.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/builtin/revert.c b/builtin/revert.c new file mode 100644 index 0000000000..e07c2217fe --- /dev/null +++ b/builtin/revert.c @@ -0,0 +1,312 @@ +#define USE_THE_REPOSITORY_VARIABLE + +#include "git-compat-util.h" +#include "builtin.h" +#include "parse-options.h" +#include "diff.h" +#include "gettext.h" +#include "revision.h" +#include "rerere.h" +#include "sequencer.h" +#include "branch.h" + +/* + * This implements the builtins revert and cherry-pick. + * + * Copyright (c) 2007 Johannes E. Schindelin + * + * Based on git-revert.sh, which is + * + * Copyright (c) 2005 Linus Torvalds + * Copyright (c) 2005 Junio C Hamano + */ + +static const char * const revert_usage[] = { + N_("git revert [--[no-]edit] [-n] [-m <parent-number>] [-s] [-S[<keyid>]] <commit>..."), + N_("git revert (--continue | --skip | --abort | --quit)"), + NULL +}; + +static const char * const cherry_pick_usage[] = { + N_("git cherry-pick [--edit] [-n] [-m <parent-number>] [-s] [-x] [--ff]\n" + " [-S[<keyid>]] <commit>..."), + N_("git cherry-pick (--continue | --skip | --abort | --quit)"), + NULL +}; + +static const char *action_name(const struct replay_opts *opts) +{ + return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick"; +} + +static const char * const *revert_or_cherry_pick_usage(struct replay_opts *opts) +{ + return opts->action == REPLAY_REVERT ? revert_usage : cherry_pick_usage; +} + +enum empty_action { + EMPTY_COMMIT_UNSPECIFIED = -1, + STOP_ON_EMPTY_COMMIT, /* output errors and stop in the middle of a cherry-pick */ + DROP_EMPTY_COMMIT, /* skip with a notice message */ + KEEP_EMPTY_COMMIT, /* keep recording as empty commits */ +}; + +static int parse_opt_empty(const struct option *opt, const char *arg, int unset) +{ + int *opt_value = opt->value; + + BUG_ON_OPT_NEG(unset); + + if (!strcmp(arg, "stop")) + *opt_value = STOP_ON_EMPTY_COMMIT; + else if (!strcmp(arg, "drop")) + *opt_value = DROP_EMPTY_COMMIT; + else if (!strcmp(arg, "keep")) + *opt_value = KEEP_EMPTY_COMMIT; + else + return error(_("invalid value for '%s': '%s'"), "--empty", arg); + + return 0; +} + +static int option_parse_m(const struct option *opt, + const char *arg, int unset) +{ + struct replay_opts *replay = opt->value; + char *end; + + if (unset) { + replay->mainline = 0; + return 0; + } + + replay->mainline = strtol(arg, &end, 10); + if (*end || replay->mainline <= 0) + return error(_("option `%s' expects a number greater than zero"), + opt->long_name); + + return 0; +} + +LAST_ARG_MUST_BE_NULL +static void verify_opt_compatible(const char *me, const char *base_opt, ...) +{ + const char *this_opt; + va_list ap; + + va_start(ap, base_opt); + while ((this_opt = va_arg(ap, const char *))) { + if (va_arg(ap, int)) + break; + } + va_end(ap); + + if (this_opt) + die(_("%s: %s cannot be used with %s"), me, this_opt, base_opt); +} + +static int run_sequencer(int argc, const char **argv, const char *prefix, + struct replay_opts *opts) +{ + const char * const * usage_str = revert_or_cherry_pick_usage(opts); + const char *me = action_name(opts); + const char *cleanup_arg = NULL; + const char sentinel_value; + const char *strategy = &sentinel_value; + const char *gpg_sign = &sentinel_value; + enum empty_action empty_opt = EMPTY_COMMIT_UNSPECIFIED; + int cmd = 0; + struct option base_options[] = { + OPT_CMDMODE(0, "quit", &cmd, N_("end revert or cherry-pick sequence"), 'q'), + OPT_CMDMODE(0, "continue", &cmd, N_("resume revert or cherry-pick sequence"), 'c'), + OPT_CMDMODE(0, "abort", &cmd, N_("cancel revert or cherry-pick sequence"), 'a'), + OPT_CMDMODE(0, "skip", &cmd, N_("skip current commit and continue"), 's'), + OPT_CLEANUP(&cleanup_arg), + OPT_BOOL('n', "no-commit", &opts->no_commit, N_("don't automatically commit")), + OPT_BOOL('e', "edit", &opts->edit, N_("edit the commit message")), + OPT_NOOP_NOARG('r', NULL), + OPT_BOOL('s', "signoff", &opts->signoff, N_("add a Signed-off-by trailer")), + OPT_CALLBACK('m', "mainline", opts, N_("parent-number"), + N_("select mainline parent"), option_parse_m), + OPT_RERERE_AUTOUPDATE(&opts->allow_rerere_auto), + OPT_STRING(0, "strategy", &strategy, N_("strategy"), N_("merge strategy")), + OPT_STRVEC('X', "strategy-option", &opts->xopts, N_("option"), + N_("option for merge strategy")), + { + .type = OPTION_STRING, + .short_name = 'S', + .long_name = "gpg-sign", + .value = &gpg_sign, + .argh = N_("key-id"), + .help = N_("GPG sign commit"), + .flags = PARSE_OPT_OPTARG, + .defval = (intptr_t) "", + }, + OPT_END() + }; + struct option *options = base_options; + + if (opts->action == REPLAY_PICK) { + struct option cp_extra[] = { + OPT_BOOL('x', NULL, &opts->record_origin, N_("append commit name")), + OPT_BOOL(0, "ff", &opts->allow_ff, N_("allow fast-forward")), + OPT_BOOL(0, "allow-empty", &opts->allow_empty, N_("preserve initially empty commits")), + OPT_BOOL(0, "allow-empty-message", &opts->allow_empty_message, N_("allow commits with empty messages")), + OPT_BOOL(0, "keep-redundant-commits", &opts->keep_redundant_commits, N_("deprecated: use --empty=keep instead")), + OPT_CALLBACK_F(0, "empty", &empty_opt, "(stop|drop|keep)", + N_("how to handle commits that become empty"), + PARSE_OPT_NONEG, parse_opt_empty), + OPT_END(), + }; + options = parse_options_concat(options, cp_extra); + } else if (opts->action == REPLAY_REVERT) { + struct option cp_extra[] = { + OPT_BOOL(0, "reference", &opts->commit_use_reference, + N_("use the 'reference' format to refer to commits")), + OPT_END(), + }; + options = parse_options_concat(options, cp_extra); + } + + argc = parse_options(argc, argv, prefix, options, usage_str, + PARSE_OPT_KEEP_ARGV0 | + PARSE_OPT_KEEP_UNKNOWN_OPT); + + prepare_repo_settings(the_repository); + the_repository->settings.command_requires_full_index = 0; + + if (opts->action == REPLAY_PICK) { + opts->drop_redundant_commits = (empty_opt == DROP_EMPTY_COMMIT); + opts->keep_redundant_commits = opts->keep_redundant_commits || (empty_opt == KEEP_EMPTY_COMMIT); + } + + /* implies allow_empty */ + if (opts->keep_redundant_commits) + opts->allow_empty = 1; + + if (cleanup_arg) { + opts->default_msg_cleanup = get_cleanup_mode(cleanup_arg, 1); + opts->explicit_cleanup = 1; + } + + /* Check for incompatible command line arguments */ + if (cmd) { + const char *this_operation; + if (cmd == 'q') + this_operation = "--quit"; + else if (cmd == 'c') + this_operation = "--continue"; + else if (cmd == 's') + this_operation = "--skip"; + else { + assert(cmd == 'a'); + this_operation = "--abort"; + } + + verify_opt_compatible(me, this_operation, + "--no-commit", opts->no_commit, + "--signoff", opts->signoff, + "--mainline", opts->mainline, + "--strategy", opts->strategy ? 1 : 0, + "--strategy-option", opts->xopts.nr ? 1 : 0, + "-x", opts->record_origin, + "--ff", opts->allow_ff, + "--rerere-autoupdate", opts->allow_rerere_auto == RERERE_AUTOUPDATE, + "--no-rerere-autoupdate", opts->allow_rerere_auto == RERERE_NOAUTOUPDATE, + "--keep-redundant-commits", opts->keep_redundant_commits, + "--empty", empty_opt != EMPTY_COMMIT_UNSPECIFIED, + NULL); + } + + if (!opts->strategy && opts->default_strategy) { + opts->strategy = opts->default_strategy; + opts->default_strategy = NULL; + } + + if (opts->allow_ff) + verify_opt_compatible(me, "--ff", + "--signoff", opts->signoff, + "--no-commit", opts->no_commit, + "-x", opts->record_origin, + "--edit", opts->edit > 0, + NULL); + + if (cmd) { + opts->revs = NULL; + } else { + struct setup_revision_opt s_r_opt; + opts->revs = xmalloc(sizeof(*opts->revs)); + repo_init_revisions(the_repository, opts->revs, NULL); + opts->revs->no_walk = 1; + opts->revs->unsorted_input = 1; + if (argc < 2) + usage_with_options(usage_str, options); + if (!strcmp(argv[1], "-")) + argv[1] = "@{-1}"; + memset(&s_r_opt, 0, sizeof(s_r_opt)); + s_r_opt.assume_dashdash = 1; + argc = setup_revisions(argc, argv, opts->revs, &s_r_opt); + } + + if (argc > 1) + usage_with_options(usage_str, options); + + /* These option values will be free()d */ + if (gpg_sign != &sentinel_value) { + free(opts->gpg_sign); + opts->gpg_sign = xstrdup_or_null(gpg_sign); + } + if (strategy != &sentinel_value) { + free(opts->strategy); + opts->strategy = xstrdup_or_null(strategy); + } + free(options); + + if (cmd == 'q') { + int ret = sequencer_remove_state(opts); + if (!ret) + remove_branch_state(the_repository, 0); + return ret; + } + if (cmd == 'c') + return sequencer_continue(the_repository, opts); + if (cmd == 'a') + return sequencer_rollback(the_repository, opts); + if (cmd == 's') + return sequencer_skip(the_repository, opts); + return sequencer_pick_revisions(the_repository, opts); +} + +int cmd_revert(int argc, + const char **argv, + const char *prefix, + struct repository *repo UNUSED) +{ + struct replay_opts opts = REPLAY_OPTS_INIT; + int res; + + opts.action = REPLAY_REVERT; + sequencer_init_config(&opts); + res = run_sequencer(argc, argv, prefix, &opts); + if (res < 0) + die(_("revert failed")); + replay_opts_release(&opts); + return res; +} + +int cmd_cherry_pick(int argc, +const char **argv, +const char *prefix, +struct repository *repo UNUSED) +{ + struct replay_opts opts = REPLAY_OPTS_INIT; + int res; + + opts.action = REPLAY_PICK; + sequencer_init_config(&opts); + res = run_sequencer(argc, argv, prefix, &opts); + if (res < 0) + die(_("cherry-pick failed")); + replay_opts_release(&opts); + return res; +} |