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