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-rw-r--r--builtin/revert.c242
1 files changed, 242 insertions, 0 deletions
diff --git a/builtin/revert.c b/builtin/revert.c
new file mode 100644
index 0000000000..1d2648b756
--- /dev/null
+++ b/builtin/revert.c
@@ -0,0 +1,242 @@
+#include "cache.h"
+#include "builtin.h"
+#include "parse-options.h"
+#include "diff.h"
+#include "revision.h"
+#include "rerere.h"
+#include "dir.h"
+#include "sequencer.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;
+}
+
+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);
+}
+
+LAST_ARG_MUST_BE_NULL
+static void verify_opt_mutually_compatible(const char *me, ...)
+{
+ const char *opt1, *opt2 = NULL;
+ va_list ap;
+
+ va_start(ap, me);
+ while ((opt1 = va_arg(ap, const char *))) {
+ if (va_arg(ap, int))
+ break;
+ }
+ if (opt1) {
+ while ((opt2 = va_arg(ap, const char *))) {
+ if (va_arg(ap, int))
+ break;
+ }
+ }
+ va_end(ap);
+
+ if (opt1 && opt2)
+ die(_("%s: %s cannot be used with %s"), me, opt1, opt2);
+}
+
+static void parse_args(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);
+ int remove_state = 0;
+ int contin = 0;
+ int rollback = 0;
+ struct option options[] = {
+ OPT_BOOLEAN(0, "quit", &remove_state, N_("end revert or cherry-pick sequence")),
+ OPT_BOOLEAN(0, "continue", &contin, N_("resume revert or cherry-pick sequence")),
+ OPT_BOOLEAN(0, "abort", &rollback, N_("cancel revert or cherry-pick sequence")),
+ OPT_BOOLEAN('n', "no-commit", &opts->no_commit, N_("don't automatically commit")),
+ OPT_BOOLEAN('e', "edit", &opts->edit, N_("edit the commit message")),
+ OPT_NOOP_NOARG('r', NULL),
+ OPT_BOOLEAN('s', "signoff", &opts->signoff, N_("add Signed-off-by:")),
+ OPT_INTEGER('m', "mainline", &opts->mainline, N_("parent number")),
+ 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),
+ OPT_END(),
+ OPT_END(),
+ OPT_END(),
+ OPT_END(),
+ OPT_END(),
+ OPT_END(),
+ };
+
+ if (opts->action == REPLAY_PICK) {
+ struct option cp_extra[] = {
+ OPT_BOOLEAN('x', NULL, &opts->record_origin, N_("append commit name")),
+ OPT_BOOLEAN(0, "ff", &opts->allow_ff, N_("allow fast-forward")),
+ OPT_BOOLEAN(0, "allow-empty", &opts->allow_empty, N_("preserve initially empty commits")),
+ OPT_BOOLEAN(0, "allow-empty-message", &opts->allow_empty_message, N_("allow commits with empty messages")),
+ OPT_BOOLEAN(0, "keep-redundant-commits", &opts->keep_redundant_commits, N_("keep redundant, empty commits")),
+ OPT_END(),
+ };
+ if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
+ die(_("program error"));
+ }
+
+ argc = parse_options(argc, argv, NULL, options, usage_str,
+ PARSE_OPT_KEEP_ARGV0 |
+ PARSE_OPT_KEEP_UNKNOWN);
+
+ /* Check for incompatible subcommands */
+ verify_opt_mutually_compatible(me,
+ "--quit", remove_state,
+ "--continue", contin,
+ "--abort", rollback,
+ NULL);
+
+ /* implies allow_empty */
+ if (opts->keep_redundant_commits)
+ opts->allow_empty = 1;
+
+ /* Set the subcommand */
+ if (remove_state)
+ opts->subcommand = REPLAY_REMOVE_STATE;
+ else if (contin)
+ opts->subcommand = REPLAY_CONTINUE;
+ else if (rollback)
+ opts->subcommand = REPLAY_ROLLBACK;
+ else
+ opts->subcommand = REPLAY_NONE;
+
+ /* Check for incompatible command line arguments */
+ if (opts->subcommand != REPLAY_NONE) {
+ char *this_operation;
+ if (opts->subcommand == REPLAY_REMOVE_STATE)
+ this_operation = "--quit";
+ 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,
+ "--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,
+ 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,
+ NULL);
+
+ if (opts->subcommand != REPLAY_NONE) {
+ opts->revs = NULL;
+ } else {
+ struct setup_revision_opt s_r_opt;
+ opts->revs = xmalloc(sizeof(*opts->revs));
+ init_revisions(opts->revs, NULL);
+ opts->revs->no_walk = REVISION_WALK_NO_WALK_UNSORTED;
+ if (argc < 2)
+ usage_with_options(usage_str, options);
+ 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);
+}
+
+int cmd_revert(int argc, const char **argv, const char *prefix)
+{
+ struct replay_opts opts;
+ int res;
+
+ memset(&opts, 0, sizeof(opts));
+ if (isatty(0))
+ opts.edit = 1;
+ opts.action = REPLAY_REVERT;
+ git_config(git_default_config, NULL);
+ parse_args(argc, argv, &opts);
+ res = sequencer_pick_revisions(&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;
+ int res;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.action = REPLAY_PICK;
+ git_config(git_default_config, NULL);
+ parse_args(argc, argv, &opts);
+ res = sequencer_pick_revisions(&opts);
+ if (res < 0)
+ die(_("cherry-pick failed"));
+ return res;
+}