Merge branch 'cb/maint-t5541-make-server-port-portable'
[gitweb.git] / builtin / revert.c
index 3117776c2c030bec03563f043c4dc8bb34eb17cd..e6840f23dc9ee6d670bb6254bee074e58e818486 100644 (file)
@@ -1,18 +1,11 @@
 #include "cache.h"
 #include "builtin.h"
-#include "object.h"
-#include "commit.h"
-#include "tag.h"
-#include "run-command.h"
-#include "exec_cmd.h"
-#include "utf8.h"
 #include "parse-options.h"
-#include "cache-tree.h"
 #include "diff.h"
 #include "revision.h"
 #include "rerere.h"
-#include "merge-recursive.h"
-#include "refs.h"
+#include "dir.h"
+#include "sequencer.h"
 
 /*
  * This implements the builtins revert and cherry-pick.
 
 static const char * const revert_usage[] = {
        "git revert [options] <commit-ish>",
+       "git revert <subcommand>",
        NULL
 };
 
 static const char * const cherry_pick_usage[] = {
        "git cherry-pick [options] <commit-ish>",
+       "git cherry-pick <subcommand>",
        NULL
 };
 
-static int edit, no_replay, no_commit, mainline, signoff, allow_ff;
-static enum { REVERT, CHERRY_PICK } action;
-static struct commit *commit;
-static int commit_argc;
-static const char **commit_argv;
-static int allow_rerere_auto;
-
-static const char *me;
-
-/* Merge strategy. */
-static const char *strategy;
-static const char **xopts;
-static size_t xopts_nr, xopts_alloc;
-
-#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
-
-static char *get_encoding(const char *message);
+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(void)
+static const char * const *revert_or_cherry_pick_usage(struct replay_opts *opts)
 {
-       return action == REVERT ? revert_usage : cherry_pick_usage;
+       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(xopts, xopts_nr + 1, xopts_alloc);
-       xopts[xopts_nr++] = xstrdup(arg);
+       ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc);
+       opts->xopts[opts->xopts_nr++] = xstrdup(arg);
        return 0;
 }
 
-static void parse_args(int argc, const char **argv)
-{
-       const char * const * usage_str = revert_or_cherry_pick_usage();
-       int noop;
-       struct option options[] = {
-               OPT_BOOLEAN('n', "no-commit", &no_commit, "don't automatically commit"),
-               OPT_BOOLEAN('e', "edit", &edit, "edit the commit message"),
-               { OPTION_BOOLEAN, 'r', NULL, &noop, NULL, "no-op (backward compatibility)",
-                 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 0 },
-               OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
-               OPT_INTEGER('m', "mainline", &mainline, "parent number"),
-               OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
-               OPT_STRING(0, "strategy", &strategy, "strategy", "merge strategy"),
-               OPT_CALLBACK('X', "strategy-option", &xopts, "option",
-                       "option for merge strategy", option_parse_x),
-               OPT_END(),
-               OPT_END(),
-               OPT_END(),
-       };
-
-       if (action == CHERRY_PICK) {
-               struct option cp_extra[] = {
-                       OPT_BOOLEAN('x', NULL, &no_replay, "append commit name"),
-                       OPT_BOOLEAN(0, "ff", &allow_ff, "allow fast-forward"),
-                       OPT_END(),
-               };
-               if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
-                       die(_("program error"));
-       }
-
-       commit_argc = parse_options(argc, argv, NULL, options, usage_str,
-                                   PARSE_OPT_KEEP_ARGV0 |
-                                   PARSE_OPT_KEEP_UNKNOWN);
-       if (commit_argc < 2)
-               usage_with_options(usage_str, options);
-
-       commit_argv = argv;
-}
-
-struct commit_message {
-       char *parent_label;
-       const char *label;
-       const char *subject;
-       char *reencoded_message;
-       const char *message;
-};
-
-static int get_message(const char *raw_message, struct commit_message *out)
-{
-       const char *encoding;
-       const char *abbrev, *subject;
-       int abbrev_len, subject_len;
-       char *q;
-
-       if (!raw_message)
-               return -1;
-       encoding = get_encoding(raw_message);
-       if (!encoding)
-               encoding = "UTF-8";
-       if (!git_commit_encoding)
-               git_commit_encoding = "UTF-8";
-
-       out->reencoded_message = NULL;
-       out->message = raw_message;
-       if (strcmp(encoding, git_commit_encoding))
-               out->reencoded_message = reencode_string(raw_message,
-                                       git_commit_encoding, encoding);
-       if (out->reencoded_message)
-               out->message = out->reencoded_message;
-
-       abbrev = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
-       abbrev_len = strlen(abbrev);
-
-       subject_len = find_commit_subject(out->message, &subject);
-
-       out->parent_label = xmalloc(strlen("parent of ") + abbrev_len +
-                             strlen("... ") + subject_len + 1);
-       q = out->parent_label;
-       q = mempcpy(q, "parent of ", strlen("parent of "));
-       out->label = q;
-       q = mempcpy(q, abbrev, abbrev_len);
-       q = mempcpy(q, "... ", strlen("... "));
-       out->subject = q;
-       q = mempcpy(q, subject, subject_len);
-       *q = '\0';
-       return 0;
-}
-
-static void free_message(struct commit_message *msg)
-{
-       free(msg->parent_label);
-       free(msg->reencoded_message);
-}
-
-static char *get_encoding(const char *message)
+static void verify_opt_compatible(const char *me, const char *base_opt, ...)
 {
-       const char *p = message, *eol;
+       const char *this_opt;
+       va_list ap;
 
-       if (!p)
-               die (_("Could not read commit message of %s"),
-                               sha1_to_hex(commit->object.sha1));
-       while (*p && *p != '\n') {
-               for (eol = p + 1; *eol && *eol != '\n'; eol++)
-                       ; /* do nothing */
-               if (!prefixcmp(p, "encoding ")) {
-                       char *result = xmalloc(eol - 8 - p);
-                       strlcpy(result, p + 9, eol - 8 - p);
-                       return result;
-               }
-               p = eol;
-               if (*p == '\n')
-                       p++;
+       va_start(ap, base_opt);
+       while ((this_opt = va_arg(ap, const char *))) {
+               if (va_arg(ap, int))
+                       break;
        }
-       return NULL;
-}
-
-static void add_message_to_msg(struct strbuf *msgbuf, const char *message)
-{
-       const char *p = message;
-       while (*p && (*p != '\n' || p[1] != '\n'))
-               p++;
-
-       if (!*p)
-               strbuf_addstr(msgbuf, sha1_to_hex(commit->object.sha1));
-
-       p += 2;
-       strbuf_addstr(msgbuf, p);
-}
-
-static void write_cherry_pick_head(void)
-{
-       int fd;
-       struct strbuf buf = STRBUF_INIT;
+       va_end(ap);
 
-       strbuf_addf(&buf, "%s\n", sha1_to_hex(commit->object.sha1));
-
-       fd = open(git_path("CHERRY_PICK_HEAD"), O_WRONLY | O_CREAT, 0666);
-       if (fd < 0)
-               die_errno(_("Could not open '%s' for writing"),
-                         git_path("CHERRY_PICK_HEAD"));
-       if (write_in_full(fd, buf.buf, buf.len) != buf.len || close(fd))
-               die_errno(_("Could not write to '%s'"), git_path("CHERRY_PICK_HEAD"));
-       strbuf_release(&buf);
-}
-
-static void advise(const char *advice, ...)
-{
-       va_list params;
-
-       va_start(params, advice);
-       vreportf("hint: ", advice, params);
-       va_end(params);
+       if (this_opt)
+               die(_("%s: %s cannot be used with %s"), me, this_opt, base_opt);
 }
 
-static void print_advice(void)
+static void verify_opt_mutually_compatible(const char *me, ...)
 {
-       char *msg = getenv("GIT_CHERRY_PICK_HELP");
+       const char *opt1, *opt2 = NULL;
+       va_list ap;
 
-       if (msg) {
-               fprintf(stderr, "%s\n", msg);
-               /*
-                * A conflict has occured but the porcelain
-                * (typically rebase --interactive) wants to take care
-                * of the commit itself so remove CHERRY_PICK_HEAD
-                */
-               unlink(git_path("CHERRY_PICK_HEAD"));
-               return;
+       va_start(ap, me);
+       while ((opt1 = va_arg(ap, const char *))) {
+               if (va_arg(ap, int))
+                       break;
        }
-
-       advise("after resolving the conflicts, mark the corrected paths");
-       advise("with 'git add <paths>' or 'git rm <paths>'");
-       advise("and commit the result with 'git commit'");
-}
-
-static void write_message(struct strbuf *msgbuf, const char *filename)
-{
-       static struct lock_file msg_file;
-
-       int msg_fd = hold_lock_file_for_update(&msg_file, filename,
-                                              LOCK_DIE_ON_ERROR);
-       if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0)
-               die_errno(_("Could not write to %s."), filename);
-       strbuf_release(msgbuf);
-       if (commit_lock_file(&msg_file) < 0)
-               die(_("Error wrapping up %s"), filename);
-}
-
-static struct tree *empty_tree(void)
-{
-       return lookup_tree((const unsigned char *)EMPTY_TREE_SHA1_BIN);
-}
-
-static NORETURN void die_dirty_index(const char *me)
-{
-       if (read_cache_unmerged()) {
-               die_resolve_conflict(me);
-       } else {
-               if (advice_commit_before_merge) {
-                       if (action == REVERT)
-                               die(_("Your local changes would be overwritten by revert.\n"
-                                         "Please, commit your changes or stash them to proceed."));
-                       else
-                               die(_("Your local changes would be overwritten by cherry-pick.\n"
-                                         "Please, commit your changes or stash them to proceed."));
-               } else {
-                       if (action == REVERT)
-                               die(_("Your local changes would be overwritten by revert.\n"));
-                       else
-                               die(_("Your local changes would be overwritten by cherry-pick.\n"));
-               }
-       }
-}
-
-static int fast_forward_to(const unsigned char *to, const unsigned char *from)
-{
-       struct ref_lock *ref_lock;
-
-       read_cache();
-       if (checkout_fast_forward(from, to))
-               exit(1); /* the callee should have complained already */
-       ref_lock = lock_any_ref_for_update("HEAD", from, 0);
-       return write_ref_sha1(ref_lock, to, "cherry-pick");
-}
-
-static int do_recursive_merge(struct commit *base, struct commit *next,
-                             const char *base_label, const char *next_label,
-                             unsigned char *head, struct strbuf *msgbuf)
-{
-       struct merge_options o;
-       struct tree *result, *next_tree, *base_tree, *head_tree;
-       int clean, index_fd;
-       const char **xopt;
-       static struct lock_file index_lock;
-
-       index_fd = hold_locked_index(&index_lock, 1);
-
-       read_cache();
-
-       init_merge_options(&o);
-       o.ancestor = base ? base_label : "(empty tree)";
-       o.branch1 = "HEAD";
-       o.branch2 = next ? next_label : "(empty tree)";
-
-       head_tree = parse_tree_indirect(head);
-       next_tree = next ? next->tree : empty_tree();
-       base_tree = base ? base->tree : empty_tree();
-
-       for (xopt = xopts; xopt != xopts + xopts_nr; xopt++)
-               parse_merge_opt(&o, *xopt);
-
-       clean = merge_trees(&o,
-                           head_tree,
-                           next_tree, base_tree, &result);
-
-       if (active_cache_changed &&
-           (write_cache(index_fd, active_cache, active_nr) ||
-            commit_locked_index(&index_lock)))
-               /* TRANSLATORS: %s will be "revert" or "cherry-pick" */
-               die(_("%s: Unable to write new index file"), me);
-       rollback_lock_file(&index_lock);
-
-       if (!clean) {
-               int i;
-               strbuf_addstr(msgbuf, "\nConflicts:\n\n");
-               for (i = 0; i < active_nr;) {
-                       struct cache_entry *ce = active_cache[i++];
-                       if (ce_stage(ce)) {
-                               strbuf_addch(msgbuf, '\t');
-                               strbuf_addstr(msgbuf, ce->name);
-                               strbuf_addch(msgbuf, '\n');
-                               while (i < active_nr && !strcmp(ce->name,
-                                               active_cache[i]->name))
-                                       i++;
-                       }
+       if (opt1) {
+               while ((opt2 = va_arg(ap, const char *))) {
+                       if (va_arg(ap, int))
+                               break;
                }
        }
 
-       return !clean;
-}
-
-/*
- * If we are cherry-pick, and if the merge did not result in
- * hand-editing, we will hit this commit and inherit the original
- * author date and name.
- * If we are revert, or if our cherry-pick results in a hand merge,
- * we had better say that the current user is responsible for that.
- */
-static int run_git_commit(const char *defmsg)
-{
-       /* 6 is max possible length of our args array including NULL */
-       const char *args[6];
-       int i = 0;
-
-       args[i++] = "commit";
-       args[i++] = "-n";
-       if (signoff)
-               args[i++] = "-s";
-       if (!edit) {
-               args[i++] = "-F";
-               args[i++] = defmsg;
-       }
-       args[i] = NULL;
-
-       return run_command_v_opt(args, RUN_GIT_CMD);
+       if (opt1 && opt2)
+               die(_("%s: %s cannot be used with %s"), me, opt1, opt2);
 }
 
-static int do_pick_commit(void)
+static void parse_args(int argc, const char **argv, struct replay_opts *opts)
 {
-       unsigned char head[20];
-       struct commit *base, *next, *parent;
-       const char *base_label, *next_label;
-       struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
-       char *defmsg = NULL;
-       struct strbuf msgbuf = STRBUF_INIT;
-       int res;
-
-       if (no_commit) {
-               /*
-                * We do not intend to commit immediately.  We just want to
-                * merge the differences in, so let's compute the tree
-                * that represents the "current" state for merge-recursive
-                * to work on.
-                */
-               if (write_cache_as_tree(head, 0, NULL))
-                       die (_("Your index file is unmerged."));
-       } else {
-               if (get_sha1("HEAD", head))
-                       die (_("You do not have a valid HEAD"));
-               if (index_differs_from("HEAD", 0))
-                       die_dirty_index(me);
-       }
-       discard_cache();
+       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, "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),
+               OPT_BOOLEAN('s', "signoff", &opts->signoff, "add Signed-off-by:"),
+               OPT_INTEGER('m', "mainline", &opts->mainline, "parent number"),
+               OPT_RERERE_AUTOUPDATE(&opts->allow_rerere_auto),
+               OPT_STRING(0, "strategy", &opts->strategy, "strategy", "merge strategy"),
+               OPT_CALLBACK('X', "strategy-option", &opts, "option",
+                       "option for merge strategy", option_parse_x),
+               OPT_END(),
+               OPT_END(),
+               OPT_END(),
+       };
 
-       if (!commit->parents) {
-               parent = NULL;
+       if (opts->action == REPLAY_PICK) {
+               struct option cp_extra[] = {
+                       OPT_BOOLEAN('x', NULL, &opts->record_origin, "append commit name"),
+                       OPT_BOOLEAN(0, "ff", &opts->allow_ff, "allow fast-forward"),
+                       OPT_END(),
+               };
+               if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
+                       die(_("program error"));
        }
-       else if (commit->parents->next) {
-               /* Reverting or cherry-picking a merge commit */
-               int cnt;
-               struct commit_list *p;
 
-               if (!mainline)
-                       die(_("Commit %s is a merge but no -m option was given."),
-                           sha1_to_hex(commit->object.sha1));
-
-               for (cnt = 1, p = commit->parents;
-                    cnt != mainline && p;
-                    cnt++)
-                       p = p->next;
-               if (cnt != mainline || !p)
-                       die(_("Commit %s does not have parent %d"),
-                           sha1_to_hex(commit->object.sha1), mainline);
-               parent = p->item;
-       } else if (0 < mainline)
-               die(_("Mainline was specified but commit %s is not a merge."),
-                   sha1_to_hex(commit->object.sha1));
+       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);
+
+       /* 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
-               parent = commit->parents->item;
-
-       if (allow_ff && parent && !hashcmp(parent->object.sha1, head))
-               return fast_forward_to(commit->object.sha1, head);
-
-       if (parent && parse_commit(parent) < 0)
-               /* TRANSLATORS: The first %s will be "revert" or
-                  "cherry-pick", the second %s a SHA1 */
-               die(_("%s: cannot parse parent commit %s"),
-                   me, sha1_to_hex(parent->object.sha1));
-
-       if (get_message(commit->buffer, &msg) != 0)
-               die(_("Cannot get commit message for %s"),
-                               sha1_to_hex(commit->object.sha1));
-
-       /*
-        * "commit" is an existing commit.  We would want to apply
-        * the difference it introduces since its first parent "prev"
-        * on top of the current HEAD if we are cherry-pick.  Or the
-        * reverse of it if we are revert.
-        */
-
-       defmsg = git_pathdup("MERGE_MSG");
-
-       if (action == REVERT) {
-               base = commit;
-               base_label = msg.label;
-               next = parent;
-               next_label = msg.parent_label;
-               strbuf_addstr(&msgbuf, "Revert \"");
-               strbuf_addstr(&msgbuf, msg.subject);
-               strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit ");
-               strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
-
-               if (commit->parents && commit->parents->next) {
-                       strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
-                       strbuf_addstr(&msgbuf, sha1_to_hex(parent->object.sha1));
-               }
-               strbuf_addstr(&msgbuf, ".\n");
-       } else {
-               base = parent;
-               base_label = msg.parent_label;
-               next = commit;
-               next_label = msg.label;
-               add_message_to_msg(&msgbuf, msg.message);
-               if (no_replay) {
-                       strbuf_addstr(&msgbuf, "(cherry picked from commit ");
-                       strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
-                       strbuf_addstr(&msgbuf, ")\n");
+               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";
                }
-               if (!no_commit)
-                       write_cherry_pick_head();
-       }
 
-       if (!strategy || !strcmp(strategy, "recursive") || action == REVERT) {
-               res = do_recursive_merge(base, next, base_label, next_label,
-                                        head, &msgbuf);
-               write_message(&msgbuf, defmsg);
-       } else {
-               struct commit_list *common = NULL;
-               struct commit_list *remotes = NULL;
-
-               write_message(&msgbuf, defmsg);
-
-               commit_list_insert(base, &common);
-               commit_list_insert(next, &remotes);
-               res = try_merge_command(strategy, xopts_nr, xopts, common,
-                                       sha1_to_hex(head), remotes);
-               free_commit_list(common);
-               free_commit_list(remotes);
+               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 (res) {
-               error(action == REVERT
-                     ? _("could not revert %s... %s")
-                     : _("could not apply %s... %s"),
-                     find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
-                     msg.subject);
-               print_advice();
-               rerere(allow_rerere_auto);
+       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 {
-               if (!no_commit)
-                       res = run_git_commit(defmsg);
+               opts->revs = xmalloc(sizeof(*opts->revs));
+               init_revisions(opts->revs, NULL);
+               opts->revs->no_walk = 1;
+               if (argc < 2)
+                       usage_with_options(usage_str, options);
+               argc = setup_revisions(argc, argv, opts->revs, NULL);
        }
 
-       free_message(&msg);
-       free(defmsg);
-
-       return res;
-}
-
-static void prepare_revs(struct rev_info *revs)
-{
-       int argc;
-
-       init_revisions(revs, NULL);
-       revs->no_walk = 1;
-       if (action != REVERT)
-               revs->reverse = 1;
-
-       argc = setup_revisions(commit_argc, commit_argv, revs, NULL);
        if (argc > 1)
-               usage(*revert_or_cherry_pick_usage());
-
-       if (prepare_revision_walk(revs))
-               die(_("revision walk setup failed"));
-
-       if (!revs->commits)
-               die(_("empty commit set passed"));
-}
-
-static void read_and_refresh_cache(const char *me)
-{
-       static struct lock_file index_lock;
-       int index_fd = hold_locked_index(&index_lock, 0);
-       if (read_index_preload(&the_index, NULL) < 0)
-               die(_("git %s: failed to read the index"), me);
-       refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL);
-       if (the_index.cache_changed) {
-               if (write_index(&the_index, index_fd) ||
-                   commit_locked_index(&index_lock))
-                       die(_("git %s: failed to refresh the index"), me);
-       }
-       rollback_lock_file(&index_lock);
-}
-
-static int revert_or_cherry_pick(int argc, const char **argv)
-{
-       struct rev_info revs;
-
-       git_config(git_default_config, NULL);
-       me = action == REVERT ? "revert" : "cherry-pick";
-       setenv(GIT_REFLOG_ACTION, me, 0);
-       parse_args(argc, argv);
-
-       if (allow_ff) {
-               if (signoff)
-                       die(_("cherry-pick --ff cannot be used with --signoff"));
-               if (no_commit)
-                       die(_("cherry-pick --ff cannot be used with --no-commit"));
-               if (no_replay)
-                       die(_("cherry-pick --ff cannot be used with -x"));
-               if (edit)
-                       die(_("cherry-pick --ff cannot be used with --edit"));
-       }
-
-       read_and_refresh_cache(me);
-
-       prepare_revs(&revs);
-
-       while ((commit = get_revision(&revs))) {
-               int res = do_pick_commit();
-               if (res)
-                       return res;
-       }
-
-       return 0;
+               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))
-               edit = 1;
-       action = REVERT;
-       return revert_or_cherry_pick(argc, argv);
+               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)
 {
-       action = CHERRY_PICK;
-       return revert_or_cherry_pick(argc, argv);
+       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;
 }