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