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#include "cache.h"
#include "config.h"
#include "builtin.h"
#include "parse-options.h"
#include "diff.h"
#include "revision.h"
#include "rerere.h"
#include "dir.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 [<options>] <commit-ish>..."),
N_("git revert <subcommand>"),
NULL
};
static const char * const cherry_pick_usage[] = {
N_("git cherry-pick [<options>] <commit-ish>..."),
N_("git cherry-pick <subcommand>"),
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;
}
static int option_parse_x(const struct option *opt,
const char *arg, int unset)
{
struct replay_opts **opts_ptr = opt->value;
struct replay_opts *opts = *opts_ptr;
if (unset)
return 0;
ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc);
opts->xopts[opts->xopts_nr++] = xstrdup(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, 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;
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", &opts->strategy, N_("strategy"), N_("merge strategy")),
OPT_CALLBACK('X', "strategy-option", &opts, N_("option"),
N_("option for merge strategy"), option_parse_x),
{ OPTION_STRING, 'S', "gpg-sign", &opts->gpg_sign, N_("key-id"),
N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (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_("keep redundant, empty commits")),
OPT_END(),
};
options = parse_options_concat(options, cp_extra);
}
argc = parse_options(argc, argv, NULL, options, usage_str,
PARSE_OPT_KEEP_ARGV0 |
PARSE_OPT_KEEP_UNKNOWN);
/* 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) {
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 ? 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,
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 */
opts->gpg_sign = xstrdup_or_null(opts->gpg_sign);
opts->strategy = xstrdup_or_null(opts->strategy);
if (!opts->strategy && getenv("GIT_TEST_MERGE_ALGORITHM"))
opts->strategy = xstrdup(getenv("GIT_TEST_MERGE_ALGORITHM"));
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 replay_opts opts = REPLAY_OPTS_INIT;
int res;
opts.action = REPLAY_REVERT;
sequencer_init_config(&opts);
res = run_sequencer(argc, argv, &opts);
if (res < 0)
die(_("revert failed"));
return res;
}
int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
{
struct replay_opts opts = REPLAY_OPTS_INIT;
int res;
opts.action = REPLAY_PICK;
sequencer_init_config(&opts);
res = run_sequencer(argc, argv, &opts);
if (res < 0)
die(_("cherry-pick failed"));
return res;
}
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