builtin/tag.c

   1 /*
   2  * Builtin "git tag"
   3  *
   4  * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
   5  *                    Carlos Rica <jasampler@gmail.com>
   6  * Based on git-tag.sh and mktag.c by Linus Torvalds.
   7  */
   8
   9 #include "builtin.h"
  10 #include "advice.h"
  11 #include "config.h"
  12 #include "editor.h"
  13 #include "environment.h"
  14 #include "gettext.h"
  15 #include "hex.h"
  16 #include "refs.h"
  17 #include "object-name.h"
  18 #include "object-store-ll.h"
  19 #include "path.h"
  20 #include "tag.h"
  21 #include "parse-options.h"
  22 #include "diff.h"
  23 #include "revision.h"
  24 #include "gpg-interface.h"
  25 #include "oid-array.h"
  26 #include "column.h"
  27 #include "ref-filter.h"
  28 #include "date.h"
  29 #include "write-or-die.h"
  30 #include "object-file-convert.h"
  31 #include "trailer.h"
  32
  33 static const char * const git_tag_usage[] = {
  34         N_("git tag [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>] [-e]\n"
  35            "        [(--trailer <token>[(=|:)<value>])...]\n"
  36            "        <tagname> [<commit> | <object>]"),
  37         N_("git tag -d <tagname>..."),
  38         N_("git tag [-n[<num>]] -l [--contains <commit>] [--no-contains <commit>]\n"
  39            "        [--points-at <object>] [--column[=<options>] | --no-column]\n"
  40            "        [--create-reflog] [--sort=<key>] [--format=<format>]\n"
  41            "        [--merged <commit>] [--no-merged <commit>] [<pattern>...]"),
  42         N_("git tag -v [--format=<format>] <tagname>..."),
  43         NULL
  44 };
  45
  46 static unsigned int colopts;
  47 static int force_sign_annotate;
  48 static int config_sign_tag = -1; /* unspecified */
  49
  50 static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting,
  51                      struct ref_format *format)
  52 {
  53         char *to_free = NULL;
  54
  55         if (filter->lines == -1)
  56                 filter->lines = 0;
  57
  58         if (!format->format) {
  59                 if (filter->lines) {
  60                         to_free = xstrfmt("%s %%(contents:lines=%d)",
  61                                           "%(align:15)%(refname:lstrip=2)%(end)",
  62                                           filter->lines);
  63                         format->format = to_free;
  64                 } else
  65                         format->format = "%(refname:lstrip=2)";
  66         }
  67
  68         if (verify_ref_format(format))
  69                 die(_("unable to parse format string"));
  70         filter->with_commit_tag_algo = 1;
  71         filter_and_format_refs(filter, FILTER_REFS_TAGS, sorting, format);
  72
  73         free(to_free);
  74
  75         return 0;
  76 }
  77
  78 typedef int (*each_tag_name_fn)(const char *name, const char *ref,
  79                                 const struct object_id *oid, void *cb_data);
  80
  81 static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
  82                              void *cb_data)
  83 {
  84         const char **p;
  85         struct strbuf ref = STRBUF_INIT;
  86         int had_error = 0;
  87         struct object_id oid;
  88
  89         for (p = argv; *p; p++) {
  90                 strbuf_reset(&ref);
  91                 strbuf_addf(&ref, "refs/tags/%s", *p);
  92                 if (refs_read_ref(get_main_ref_store(the_repository), ref.buf, &oid)) {
  93                         error(_("tag '%s' not found."), *p);
  94                         had_error = 1;
  95                         continue;
  96                 }
  97                 if (fn(*p, ref.buf, &oid, cb_data))
  98                         had_error = 1;
  99         }
 100         strbuf_release(&ref);
 101         return had_error;
 102 }
 103
 104 static int collect_tags(const char *name UNUSED, const char *ref,
 105                         const struct object_id *oid, void *cb_data)
 106 {
 107         struct string_list *ref_list = cb_data;
 108
 109         string_list_append(ref_list, ref);
 110         ref_list->items[ref_list->nr - 1].util = oiddup(oid);
 111         return 0;
 112 }
 113
 114 static int delete_tags(const char **argv)
 115 {
 116         int result;
 117         struct string_list refs_to_delete = STRING_LIST_INIT_DUP;
 118         struct string_list_item *item;
 119
 120         result = for_each_tag_name(argv, collect_tags, (void *)&refs_to_delete);
 121         if (refs_delete_refs(get_main_ref_store(the_repository), NULL, &refs_to_delete, REF_NO_DEREF))
 122                 result = 1;
 123
 124         for_each_string_list_item(item, &refs_to_delete) {
 125                 const char *name = item->string;
 126                 struct object_id *oid = item->util;
 127                 if (!refs_ref_exists(get_main_ref_store(the_repository), name))
 128                         printf(_("Deleted tag '%s' (was %s)\n"),
 129                                 item->string + 10,
 130                                 repo_find_unique_abbrev(the_repository, oid, DEFAULT_ABBREV));
 131
 132                 free(oid);
 133         }
 134         string_list_clear(&refs_to_delete, 0);
 135         return result;
 136 }
 137
 138 static int verify_tag(const char *name, const char *ref UNUSED,
 139                       const struct object_id *oid, void *cb_data)
 140 {
 141         int flags;
 142         struct ref_format *format = cb_data;
 143         flags = GPG_VERIFY_VERBOSE;
 144
 145         if (format->format)
 146                 flags = GPG_VERIFY_OMIT_STATUS;
 147
 148         if (gpg_verify_tag(oid, name, flags))
 149                 return -1;
 150
 151         if (format->format)
 152                 pretty_print_ref(name, oid, format);
 153
 154         return 0;
 155 }
 156
 157 static int do_sign(struct strbuf *buffer, struct object_id **compat_oid,
 158                    struct object_id *compat_oid_buf)
 159 {
 160         const struct git_hash_algo *compat = the_repository->compat_hash_algo;
 161         struct strbuf sig = STRBUF_INIT, compat_sig = STRBUF_INIT;
 162         struct strbuf compat_buf = STRBUF_INIT;
 163         const char *keyid = get_signing_key();
 164         int ret = -1;
 165
 166         if (sign_buffer(buffer, &sig, keyid))
 167                 return -1;
 168
 169         if (compat) {
 170                 const struct git_hash_algo *algo = the_repository->hash_algo;
 171
 172                 if (convert_object_file(&compat_buf, algo, compat,
 173                                         buffer->buf, buffer->len, OBJ_TAG, 1))
 174                         goto out;
 175                 if (sign_buffer(&compat_buf, &compat_sig, keyid))
 176                         goto out;
 177                 add_header_signature(&compat_buf, &sig, algo);
 178                 strbuf_addbuf(&compat_buf, &compat_sig);
 179                 hash_object_file(compat, compat_buf.buf, compat_buf.len,
 180                                  OBJ_TAG, compat_oid_buf);
 181                 *compat_oid = compat_oid_buf;
 182         }
 183
 184         if (compat_sig.len)
 185                 add_header_signature(buffer, &compat_sig, compat);
 186
 187         strbuf_addbuf(buffer, &sig);
 188         ret = 0;
 189 out:
 190         strbuf_release(&sig);
 191         strbuf_release(&compat_sig);
 192         strbuf_release(&compat_buf);
 193         return ret;
 194 }
 195
 196 static const char tag_template[] =
 197         N_("\nWrite a message for tag:\n  %s\n"
 198         "Lines starting with '%s' will be ignored.\n");
 199
 200 static const char tag_template_nocleanup[] =
 201         N_("\nWrite a message for tag:\n  %s\n"
 202         "Lines starting with '%s' will be kept; you may remove them"
 203         " yourself if you want to.\n");
 204
 205 static int git_tag_config(const char *var, const char *value,
 206                           const struct config_context *ctx, void *cb)
 207 {
 208         if (!strcmp(var, "tag.gpgsign")) {
 209                 config_sign_tag = git_config_bool(var, value);
 210                 return 0;
 211         }
 212
 213         if (!strcmp(var, "tag.sort")) {
 214                 if (!value)
 215                         return config_error_nonbool(var);
 216                 string_list_append(cb, value);
 217                 return 0;
 218         }
 219
 220         if (!strcmp(var, "tag.forcesignannotated")) {
 221                 force_sign_annotate = git_config_bool(var, value);
 222                 return 0;
 223         }
 224
 225         if (starts_with(var, "column."))
 226                 return git_column_config(var, value, "tag", &colopts);
 227
 228         if (git_color_config(var, value, cb) < 0)
 229                 return -1;
 230
 231         return git_default_config(var, value, ctx, cb);
 232 }
 233
 234 static void write_tag_body(int fd, const struct object_id *oid)
 235 {
 236         unsigned long size;
 237         enum object_type type;
 238         char *buf, *sp, *orig;
 239         struct strbuf payload = STRBUF_INIT;
 240         struct strbuf signature = STRBUF_INIT;
 241
 242         orig = buf = repo_read_object_file(the_repository, oid, &type, &size);
 243         if (!buf)
 244                 return;
 245         if (parse_signature(buf, size, &payload, &signature)) {
 246                 buf = payload.buf;
 247                 size = payload.len;
 248         }
 249         /* skip header */
 250         sp = strstr(buf, "\n\n");
 251
 252         if (!sp || !size || type != OBJ_TAG) {
 253                 free(buf);
 254                 return;
 255         }
 256         sp += 2; /* skip the 2 LFs */
 257         write_or_die(fd, sp, buf + size - sp);
 258
 259         free(orig);
 260         strbuf_release(&payload);
 261         strbuf_release(&signature);
 262 }
 263
 264 static int build_tag_object(struct strbuf *buf, int sign, struct object_id *result)
 265 {
 266         struct object_id *compat_oid = NULL, compat_oid_buf;
 267         if (sign && do_sign(buf, &compat_oid, &compat_oid_buf) < 0)
 268                 return error(_("unable to sign the tag"));
 269         if (write_object_file_flags(buf->buf, buf->len, OBJ_TAG, result,
 270                                     compat_oid, 0) < 0)
 271                 return error(_("unable to write tag file"));
 272         return 0;
 273 }
 274
 275 struct create_tag_options {
 276         unsigned int message_given:1;
 277         unsigned int use_editor:1;
 278         unsigned int sign;
 279         enum {
 280                 CLEANUP_NONE,
 281                 CLEANUP_SPACE,
 282                 CLEANUP_ALL
 283         } cleanup_mode;
 284 };
 285
 286 static const char message_advice_nested_tag[] =
 287         N_("You have created a nested tag. The object referred to by your new tag is\n"
 288            "already a tag. If you meant to tag the object that it points to, use:\n"
 289            "\n"
 290            "\tgit tag -f %s %s^{}");
 291
 292 static void create_tag(const struct object_id *object, const char *object_ref,
 293                        const char *tag,
 294                        struct strbuf *buf, struct create_tag_options *opt,
 295                        struct object_id *prev, struct object_id *result,
 296                        struct strvec *trailer_args, char *path)
 297 {
 298         enum object_type type;
 299         struct strbuf header = STRBUF_INIT;
 300         int should_edit;
 301
 302         type = oid_object_info(the_repository, object, NULL);
 303         if (type <= OBJ_NONE)
 304                 die(_("bad object type."));
 305
 306         if (type == OBJ_TAG)
 307                 advise_if_enabled(ADVICE_NESTED_TAG, _(message_advice_nested_tag),
 308                                   tag, object_ref);
 309
 310         strbuf_addf(&header,
 311                     "object %s\n"
 312                     "type %s\n"
 313                     "tag %s\n"
 314                     "tagger %s\n\n",
 315                     oid_to_hex(object),
 316                     type_name(type),
 317                     tag,
 318                     git_committer_info(IDENT_STRICT));
 319
 320         should_edit = opt->use_editor || !opt->message_given;
 321         if (should_edit || trailer_args->nr) {
 322                 int fd;
 323
 324                 /* write the template message before editing: */
 325                 fd = xopen(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 326
 327                 if (opt->message_given && buf->len) {
 328                         strbuf_complete(buf, '\n');
 329                         write_or_die(fd, buf->buf, buf->len);
 330                         strbuf_reset(buf);
 331                 } else if (!is_null_oid(prev)) {
 332                         write_tag_body(fd, prev);
 333                 } else {
 334                         struct strbuf buf = STRBUF_INIT;
 335                         strbuf_addch(&buf, '\n');
 336                         if (opt->cleanup_mode == CLEANUP_ALL)
 337                                 strbuf_commented_addf(&buf, comment_line_str,
 338                                       _(tag_template), tag, comment_line_str);
 339                         else
 340                                 strbuf_commented_addf(&buf, comment_line_str,
 341                                       _(tag_template_nocleanup), tag, comment_line_str);
 342                         write_or_die(fd, buf.buf, buf.len);
 343                         strbuf_release(&buf);
 344                 }
 345                 close(fd);
 346
 347                 if (trailer_args->nr && amend_file_with_trailers(path, trailer_args))
 348                         die(_("unable to pass trailers to --trailers"));
 349
 350                 if (should_edit) {
 351                         if (launch_editor(path, buf, NULL)) {
 352                                 fprintf(stderr,
 353                                         _("Please supply the message using either -m or -F option.\n"));
 354                                 exit(1);
 355                         }
 356                 } else if (trailer_args->nr) {
 357                         strbuf_reset(buf);
 358                         if (strbuf_read_file(buf, path, 0) < 0)
 359                                 die_errno(_("failed to read '%s'"), path);
 360                 }
 361         }
 362
 363         if (opt->cleanup_mode != CLEANUP_NONE)
 364                 strbuf_stripspace(buf,
 365                   opt->cleanup_mode == CLEANUP_ALL ? comment_line_str : NULL);
 366
 367         if (!opt->message_given && !buf->len)
 368                 die(_("no tag message?"));
 369
 370         strbuf_insert(buf, 0, header.buf, header.len);
 371         strbuf_release(&header);
 372
 373         if (build_tag_object(buf, opt->sign, result) < 0) {
 374                 if (path)
 375                         fprintf(stderr, _("The tag message has been left in %s\n"),
 376                                 path);
 377                 exit(128);
 378         }
 379 }
 380
 381 static void create_reflog_msg(const struct object_id *oid, struct strbuf *sb)
 382 {
 383         enum object_type type;
 384         struct commit *c;
 385         char *buf;
 386         unsigned long size;
 387         int subject_len = 0;
 388         const char *subject_start;
 389
 390         char *rla = getenv("GIT_REFLOG_ACTION");
 391         if (rla) {
 392                 strbuf_addstr(sb, rla);
 393         } else {
 394                 strbuf_addstr(sb, "tag: tagging ");
 395                 strbuf_add_unique_abbrev(sb, oid, DEFAULT_ABBREV);
 396         }
 397
 398         strbuf_addstr(sb, " (");
 399         type = oid_object_info(the_repository, oid, NULL);
 400         switch (type) {
 401         default:
 402                 strbuf_addstr(sb, "object of unknown type");
 403                 break;
 404         case OBJ_COMMIT:
 405                 if ((buf = repo_read_object_file(the_repository, oid, &type, &size))) {
 406                         subject_len = find_commit_subject(buf, &subject_start);
 407                         strbuf_insert(sb, sb->len, subject_start, subject_len);
 408                 } else {
 409                         strbuf_addstr(sb, "commit object");
 410                 }
 411                 free(buf);
 412
 413                 if ((c = lookup_commit_reference(the_repository, oid)))
 414                         strbuf_addf(sb, ", %s", show_date(c->date, 0, DATE_MODE(SHORT)));
 415                 break;
 416         case OBJ_TREE:
 417                 strbuf_addstr(sb, "tree object");
 418                 break;
 419         case OBJ_BLOB:
 420                 strbuf_addstr(sb, "blob object");
 421                 break;
 422         case OBJ_TAG:
 423                 strbuf_addstr(sb, "other tag object");
 424                 break;
 425         }
 426         strbuf_addch(sb, ')');
 427 }
 428
 429 struct msg_arg {
 430         int given;
 431         struct strbuf buf;
 432 };
 433
 434 static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
 435 {
 436         struct msg_arg *msg = opt->value;
 437
 438         BUG_ON_OPT_NEG(unset);
 439
 440         if (!arg)
 441                 return -1;
 442         if (msg->buf.len)
 443                 strbuf_addstr(&(msg->buf), "\n\n");
 444         strbuf_addstr(&(msg->buf), arg);
 445         msg->given = 1;
 446         return 0;
 447 }
 448
 449 static int strbuf_check_tag_ref(struct strbuf *sb, const char *name)
 450 {
 451         if (name[0] == '-')
 452                 return -1;
 453
 454         strbuf_reset(sb);
 455         strbuf_addf(sb, "refs/tags/%s", name);
 456
 457         return check_refname_format(sb->buf, 0);
 458 }
 459
 460 int cmd_tag(int argc, const char **argv, const char *prefix)
 461 {
 462         struct strbuf buf = STRBUF_INIT;
 463         struct strbuf ref = STRBUF_INIT;
 464         struct strbuf reflog_msg = STRBUF_INIT;
 465         struct object_id object, prev;
 466         const char *object_ref, *tag;
 467         struct create_tag_options opt;
 468         char *cleanup_arg = NULL;
 469         int create_reflog = 0;
 470         int annotate = 0, force = 0;
 471         int cmdmode = 0, create_tag_object = 0;
 472         char *msgfile = NULL;
 473         const char *keyid = NULL;
 474         struct msg_arg msg = { .buf = STRBUF_INIT };
 475         struct ref_transaction *transaction;
 476         struct strbuf err = STRBUF_INIT;
 477         struct ref_filter filter = REF_FILTER_INIT;
 478         struct ref_sorting *sorting;
 479         struct string_list sorting_options = STRING_LIST_INIT_DUP;
 480         struct ref_format format = REF_FORMAT_INIT;
 481         struct strvec trailer_args = STRVEC_INIT;
 482         int icase = 0;
 483         int edit_flag = 0;
 484         struct option options[] = {
 485                 OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
 486                 { OPTION_INTEGER, 'n', NULL, &filter.lines, N_("n"),
 487                                 N_("print <n> lines of each tag message"),
 488                                 PARSE_OPT_OPTARG, NULL, 1 },
 489                 OPT_CMDMODE('d', "delete", &cmdmode, N_("delete tags"), 'd'),
 490                 OPT_CMDMODE('v', "verify", &cmdmode, N_("verify tags"), 'v'),
 491
 492                 OPT_GROUP(N_("Tag creation options")),
 493                 OPT_BOOL('a', "annotate", &annotate,
 494                                         N_("annotated tag, needs a message")),
 495                 OPT_CALLBACK_F('m', "message", &msg, N_("message"),
 496                                N_("tag message"), PARSE_OPT_NONEG, parse_msg_arg),
 497                 OPT_FILENAME('F', "file", &msgfile, N_("read message from file")),
 498                 OPT_PASSTHRU_ARGV(0, "trailer", &trailer_args, N_("trailer"),
 499                                   N_("add custom trailer(s)"), PARSE_OPT_NONEG),
 500                 OPT_BOOL('e', "edit", &edit_flag, N_("force edit of tag message")),
 501                 OPT_BOOL('s', "sign", &opt.sign, N_("annotated and GPG-signed tag")),
 502                 OPT_CLEANUP(&cleanup_arg),
 503                 OPT_STRING('u', "local-user", &keyid, N_("key-id"),
 504                                         N_("use another key to sign the tag")),
 505                 OPT__FORCE(&force, N_("replace the tag if exists"), 0),
 506                 OPT_BOOL(0, "create-reflog", &create_reflog, N_("create a reflog")),
 507
 508                 OPT_GROUP(N_("Tag listing options")),
 509                 OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
 510                 OPT_CONTAINS(&filter.with_commit, N_("print only tags that contain the commit")),
 511                 OPT_NO_CONTAINS(&filter.no_commit, N_("print only tags that don't contain the commit")),
 512                 OPT_WITH(&filter.with_commit, N_("print only tags that contain the commit")),
 513                 OPT_WITHOUT(&filter.no_commit, N_("print only tags that don't contain the commit")),
 514                 OPT_MERGED(&filter, N_("print only tags that are merged")),
 515                 OPT_NO_MERGED(&filter, N_("print only tags that are not merged")),
 516                 OPT_BOOL(0, "omit-empty",  &format.array_opts.omit_empty,
 517                         N_("do not output a newline after empty formatted refs")),
 518                 OPT_REF_SORT(&sorting_options),
 519                 {
 520                         OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
 521                         N_("print only tags of the object"), PARSE_OPT_LASTARG_DEFAULT,
 522                         parse_opt_object_name, (intptr_t) "HEAD"
 523                 },
 524                 OPT_STRING(  0 , "format", &format.format, N_("format"),
 525                            N_("format to use for the output")),
 526                 OPT__COLOR(&format.use_color, N_("respect format colors")),
 527                 OPT_BOOL('i', "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
 528                 OPT_END()
 529         };
 530         int ret = 0;
 531         const char *only_in_list = NULL;
 532         char *path = NULL;
 533
 534         setup_ref_filter_porcelain_msg();
 535
 536         /*
 537          * Try to set sort keys from config. If config does not set any,
 538          * fall back on default (refname) sorting.
 539          */
 540         git_config(git_tag_config, &sorting_options);
 541         if (!sorting_options.nr)
 542                 string_list_append(&sorting_options, "refname");
 543
 544         memset(&opt, 0, sizeof(opt));
 545         filter.lines = -1;
 546         opt.sign = -1;
 547
 548         argc = parse_options(argc, argv, prefix, options, git_tag_usage, 0);
 549
 550         if (!cmdmode) {
 551                 if (argc == 0)
 552                         cmdmode = 'l';
 553                 else if (filter.with_commit || filter.no_commit ||
 554                          filter.reachable_from || filter.unreachable_from ||
 555                          filter.points_at.nr || filter.lines != -1)
 556                         cmdmode = 'l';
 557         }
 558
 559         if (cmdmode == 'l')
 560                 setup_auto_pager("tag", 1);
 561
 562         if (opt.sign == -1)
 563                 opt.sign = cmdmode ? 0 : config_sign_tag > 0;
 564
 565         if (keyid) {
 566                 opt.sign = 1;
 567                 set_signing_key(keyid);
 568         }
 569         create_tag_object = (opt.sign || annotate || msg.given || msgfile ||
 570                              edit_flag || trailer_args.nr);
 571
 572         if ((create_tag_object || force) && (cmdmode != 0))
 573                 usage_with_options(git_tag_usage, options);
 574
 575         finalize_colopts(&colopts, -1);
 576         if (cmdmode == 'l' && filter.lines != -1) {
 577                 if (explicitly_enable_column(colopts))
 578                         die(_("options '%s' and '%s' cannot be used together"), "--column", "-n");
 579                 colopts = 0;
 580         }
 581         sorting = ref_sorting_options(&sorting_options);
 582         ref_sorting_set_sort_flags_all(sorting, REF_SORTING_ICASE, icase);
 583         filter.ignore_case = icase;
 584         if (cmdmode == 'l') {
 585                 if (column_active(colopts)) {
 586                         struct column_options copts;
 587                         memset(&copts, 0, sizeof(copts));
 588                         copts.padding = 2;
 589                         if (run_column_filter(colopts, &copts))
 590                                 die(_("could not start 'git column'"));
 591                 }
 592                 filter.name_patterns = argv;
 593                 ret = list_tags(&filter, sorting, &format);
 594                 if (column_active(colopts))
 595                         stop_column_filter();
 596                 goto cleanup;
 597         }
 598         if (filter.lines != -1)
 599                 only_in_list = "-n";
 600         else if (filter.with_commit)
 601                 only_in_list = "--contains";
 602         else if (filter.no_commit)
 603                 only_in_list = "--no-contains";
 604         else if (filter.points_at.nr)
 605                 only_in_list = "--points-at";
 606         else if (filter.reachable_from)
 607                 only_in_list = "--merged";
 608         else if (filter.unreachable_from)
 609                 only_in_list = "--no-merged";
 610         if (only_in_list)
 611                 die(_("the '%s' option is only allowed in list mode"), only_in_list);
 612         if (cmdmode == 'd') {
 613                 ret = delete_tags(argv);
 614                 goto cleanup;
 615         }
 616         if (cmdmode == 'v') {
 617                 if (format.format && verify_ref_format(&format))
 618                         usage_with_options(git_tag_usage, options);
 619                 ret = for_each_tag_name(argv, verify_tag, &format);
 620                 goto cleanup;
 621         }
 622
 623         if (msg.given || msgfile) {
 624                 if (msg.given && msgfile)
 625                         die(_("options '%s' and '%s' cannot be used together"), "-F", "-m");
 626                 if (msg.given)
 627                         strbuf_addbuf(&buf, &(msg.buf));
 628                 else {
 629                         if (!strcmp(msgfile, "-")) {
 630                                 if (strbuf_read(&buf, 0, 1024) < 0)
 631                                         die_errno(_("cannot read '%s'"), msgfile);
 632                         } else {
 633                                 if (strbuf_read_file(&buf, msgfile, 1024) < 0)
 634                                         die_errno(_("could not open or read '%s'"),
 635                                                 msgfile);
 636                         }
 637                 }
 638         }
 639
 640         tag = argv[0];
 641
 642         object_ref = argc == 2 ? argv[1] : "HEAD";
 643         if (argc > 2)
 644                 die(_("too many arguments"));
 645
 646         if (repo_get_oid(the_repository, object_ref, &object))
 647                 die(_("Failed to resolve '%s' as a valid ref."), object_ref);
 648
 649         if (strbuf_check_tag_ref(&ref, tag))
 650                 die(_("'%s' is not a valid tag name."), tag);
 651
 652         if (refs_read_ref(get_main_ref_store(the_repository), ref.buf, &prev))
 653                 oidclr(&prev);
 654         else if (!force)
 655                 die(_("tag '%s' already exists"), tag);
 656
 657         opt.message_given = msg.given || msgfile;
 658         opt.use_editor = edit_flag;
 659
 660         if (!cleanup_arg || !strcmp(cleanup_arg, "strip"))
 661                 opt.cleanup_mode = CLEANUP_ALL;
 662         else if (!strcmp(cleanup_arg, "verbatim"))
 663                 opt.cleanup_mode = CLEANUP_NONE;
 664         else if (!strcmp(cleanup_arg, "whitespace"))
 665                 opt.cleanup_mode = CLEANUP_SPACE;
 666         else
 667                 die(_("Invalid cleanup mode %s"), cleanup_arg);
 668
 669         create_reflog_msg(&object, &reflog_msg);
 670
 671         if (create_tag_object) {
 672                 if (force_sign_annotate && !annotate)
 673                         opt.sign = 1;
 674                 path = git_pathdup("TAG_EDITMSG");
 675                 create_tag(&object, object_ref, tag, &buf, &opt, &prev, &object,
 676                            &trailer_args, path);
 677         }
 678
 679         transaction = ref_store_transaction_begin(get_main_ref_store(the_repository),
 680                                                   &err);
 681         if (!transaction ||
 682             ref_transaction_update(transaction, ref.buf, &object, &prev,
 683                                    NULL, NULL,
 684                                    create_reflog ? REF_FORCE_CREATE_REFLOG : 0,
 685                                    reflog_msg.buf, &err) ||
 686             ref_transaction_commit(transaction, &err)) {
 687                 if (path)
 688                         fprintf(stderr,
 689                                 _("The tag message has been left in %s\n"),
 690                                 path);
 691                 die("%s", err.buf);
 692         }
 693         if (path) {
 694                 unlink_or_warn(path);
 695                 free(path);
 696         }
 697         ref_transaction_free(transaction);
 698         if (force && !is_null_oid(&prev) && !oideq(&prev, &object))
 699                 printf(_("Updated tag '%s' (was %s)\n"), tag,
 700                        repo_find_unique_abbrev(the_repository, &prev, DEFAULT_ABBREV));
 701
 702 cleanup:
 703         ref_sorting_release(sorting);
 704         ref_filter_clear(&filter);
 705         strbuf_release(&buf);
 706         strbuf_release(&ref);
 707         strbuf_release(&reflog_msg);
 708         strbuf_release(&msg.buf);
 709         strbuf_release(&err);
 710         strvec_clear(&trailer_args);
 711         free(msgfile);
 712         return ret;
 713 }