Andrew's git / gitweb.git / builtin/tag.c
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builtin / tag.con commit Merge branch 'nd/path-max-must-go' (4328190)
   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 "cache.h"
  10#include "builtin.h"
  11#include "refs.h"
  12#include "tag.h"
  13#include "run-command.h"
  14#include "parse-options.h"
  15#include "diff.h"
  16#include "revision.h"
  17#include "gpg-interface.h"
  18#include "sha1-array.h"
  19#include "column.h"
  20
  21static const char * const git_tag_usage[] = {
  22        N_("git tag [-a|-s|-u <key-id>] [-f] [-m <msg>|-F <file>] <tagname> [<head>]"),
  23        N_("git tag -d <tagname>..."),
  24        N_("git tag -l [-n[<num>]] [--contains <commit>] [--points-at <object>] "
  25                "\n\t\t[<pattern>...]"),
  26        N_("git tag -v <tagname>..."),
  27        NULL
  28};
  29
  30#define STRCMP_SORT     0       /* must be zero */
  31#define VERCMP_SORT     1
  32#define SORT_MASK       0x7fff
  33#define REVERSE_SORT    0x8000
  34
  35struct tag_filter {
  36        const char **patterns;
  37        int lines;
  38        int sort;
  39        struct string_list tags;
  40        struct commit_list *with_commit;
  41};
  42
  43static struct sha1_array points_at;
  44static unsigned int colopts;
  45
  46static int match_pattern(const char **patterns, const char *ref)
  47{
  48        /* no pattern means match everything */
  49        if (!*patterns)
  50                return 1;
  51        for (; *patterns; patterns++)
  52                if (!wildmatch(*patterns, ref, 0, NULL))
  53                        return 1;
  54        return 0;
  55}
  56
  57static const unsigned char *match_points_at(const char *refname,
  58                                            const unsigned char *sha1)
  59{
  60        const unsigned char *tagged_sha1 = NULL;
  61        struct object *obj;
  62
  63        if (sha1_array_lookup(&points_at, sha1) >= 0)
  64                return sha1;
  65        obj = parse_object(sha1);
  66        if (!obj)
  67                die(_("malformed object at '%s'"), refname);
  68        if (obj->type == OBJ_TAG)
  69                tagged_sha1 = ((struct tag *)obj)->tagged->sha1;
  70        if (tagged_sha1 && sha1_array_lookup(&points_at, tagged_sha1) >= 0)
  71                return tagged_sha1;
  72        return NULL;
  73}
  74
  75static int in_commit_list(const struct commit_list *want, struct commit *c)
  76{
  77        for (; want; want = want->next)
  78                if (!hashcmp(want->item->object.sha1, c->object.sha1))
  79                        return 1;
  80        return 0;
  81}
  82
  83enum contains_result {
  84        CONTAINS_UNKNOWN = -1,
  85        CONTAINS_NO = 0,
  86        CONTAINS_YES = 1
  87};
  88
  89/*
  90 * Test whether the candidate or one of its parents is contained in the list.
  91 * Do not recurse to find out, though, but return -1 if inconclusive.
  92 */
  93static enum contains_result contains_test(struct commit *candidate,
  94                            const struct commit_list *want)
  95{
  96        /* was it previously marked as containing a want commit? */
  97        if (candidate->object.flags & TMP_MARK)
  98                return 1;
  99        /* or marked as not possibly containing a want commit? */
 100        if (candidate->object.flags & UNINTERESTING)
 101                return 0;
 102        /* or are we it? */
 103        if (in_commit_list(want, candidate)) {
 104                candidate->object.flags |= TMP_MARK;
 105                return 1;
 106        }
 107
 108        if (parse_commit(candidate) < 0)
 109                return 0;
 110
 111        return -1;
 112}
 113
 114/*
 115 * Mimicking the real stack, this stack lives on the heap, avoiding stack
 116 * overflows.
 117 *
 118 * At each recursion step, the stack items points to the commits whose
 119 * ancestors are to be inspected.
 120 */
 121struct stack {
 122        int nr, alloc;
 123        struct stack_entry {
 124                struct commit *commit;
 125                struct commit_list *parents;
 126        } *stack;
 127};
 128
 129static void push_to_stack(struct commit *candidate, struct stack *stack)
 130{
 131        int index = stack->nr++;
 132        ALLOC_GROW(stack->stack, stack->nr, stack->alloc);
 133        stack->stack[index].commit = candidate;
 134        stack->stack[index].parents = candidate->parents;
 135}
 136
 137static enum contains_result contains(struct commit *candidate,
 138                const struct commit_list *want)
 139{
 140        struct stack stack = { 0, 0, NULL };
 141        int result = contains_test(candidate, want);
 142
 143        if (result != CONTAINS_UNKNOWN)
 144                return result;
 145
 146        push_to_stack(candidate, &stack);
 147        while (stack.nr) {
 148                struct stack_entry *entry = &stack.stack[stack.nr - 1];
 149                struct commit *commit = entry->commit;
 150                struct commit_list *parents = entry->parents;
 151
 152                if (!parents) {
 153                        commit->object.flags |= UNINTERESTING;
 154                        stack.nr--;
 155                }
 156                /*
 157                 * If we just popped the stack, parents->item has been marked,
 158                 * therefore contains_test will return a meaningful 0 or 1.
 159                 */
 160                else switch (contains_test(parents->item, want)) {
 161                case CONTAINS_YES:
 162                        commit->object.flags |= TMP_MARK;
 163                        stack.nr--;
 164                        break;
 165                case CONTAINS_NO:
 166                        entry->parents = parents->next;
 167                        break;
 168                case CONTAINS_UNKNOWN:
 169                        push_to_stack(parents->item, &stack);
 170                        break;
 171                }
 172        }
 173        free(stack.stack);
 174        return contains_test(candidate, want);
 175}
 176
 177static void show_tag_lines(const unsigned char *sha1, int lines)
 178{
 179        int i;
 180        unsigned long size;
 181        enum object_type type;
 182        char *buf, *sp, *eol;
 183        size_t len;
 184
 185        buf = read_sha1_file(sha1, &type, &size);
 186        if (!buf)
 187                die_errno("unable to read object %s", sha1_to_hex(sha1));
 188        if (type != OBJ_COMMIT && type != OBJ_TAG)
 189                goto free_return;
 190        if (!size)
 191                die("an empty %s object %s?",
 192                    typename(type), sha1_to_hex(sha1));
 193
 194        /* skip header */
 195        sp = strstr(buf, "\n\n");
 196        if (!sp)
 197                goto free_return;
 198
 199        /* only take up to "lines" lines, and strip the signature from a tag */
 200        if (type == OBJ_TAG)
 201                size = parse_signature(buf, size);
 202        for (i = 0, sp += 2; i < lines && sp < buf + size; i++) {
 203                if (i)
 204                        printf("\n    ");
 205                eol = memchr(sp, '\n', size - (sp - buf));
 206                len = eol ? eol - sp : size - (sp - buf);
 207                fwrite(sp, len, 1, stdout);
 208                if (!eol)
 209                        break;
 210                sp = eol + 1;
 211        }
 212free_return:
 213        free(buf);
 214}
 215
 216static int show_reference(const char *refname, const unsigned char *sha1,
 217                          int flag, void *cb_data)
 218{
 219        struct tag_filter *filter = cb_data;
 220
 221        if (match_pattern(filter->patterns, refname)) {
 222                if (filter->with_commit) {
 223                        struct commit *commit;
 224
 225                        commit = lookup_commit_reference_gently(sha1, 1);
 226                        if (!commit)
 227                                return 0;
 228                        if (!contains(commit, filter->with_commit))
 229                                return 0;
 230                }
 231
 232                if (points_at.nr && !match_points_at(refname, sha1))
 233                        return 0;
 234
 235                if (!filter->lines) {
 236                        if (filter->sort)
 237                                string_list_append(&filter->tags, refname);
 238                        else
 239                                printf("%s\n", refname);
 240                        return 0;
 241                }
 242                printf("%-15s ", refname);
 243                show_tag_lines(sha1, filter->lines);
 244                putchar('\n');
 245        }
 246
 247        return 0;
 248}
 249
 250static int sort_by_version(const void *a_, const void *b_)
 251{
 252        const struct string_list_item *a = a_;
 253        const struct string_list_item *b = b_;
 254        return versioncmp(a->string, b->string);
 255}
 256
 257static int list_tags(const char **patterns, int lines,
 258                     struct commit_list *with_commit, int sort)
 259{
 260        struct tag_filter filter;
 261
 262        filter.patterns = patterns;
 263        filter.lines = lines;
 264        filter.sort = sort;
 265        filter.with_commit = with_commit;
 266        memset(&filter.tags, 0, sizeof(filter.tags));
 267        filter.tags.strdup_strings = 1;
 268
 269        for_each_tag_ref(show_reference, (void *) &filter);
 270        if (sort) {
 271                int i;
 272                if ((sort & SORT_MASK) == VERCMP_SORT)
 273                        qsort(filter.tags.items, filter.tags.nr,
 274                              sizeof(struct string_list_item), sort_by_version);
 275                if (sort & REVERSE_SORT)
 276                        for (i = filter.tags.nr - 1; i >= 0; i--)
 277                                printf("%s\n", filter.tags.items[i].string);
 278                else
 279                        for (i = 0; i < filter.tags.nr; i++)
 280                                printf("%s\n", filter.tags.items[i].string);
 281                string_list_clear(&filter.tags, 0);
 282        }
 283        return 0;
 284}
 285
 286typedef int (*each_tag_name_fn)(const char *name, const char *ref,
 287                                const unsigned char *sha1);
 288
 289static int for_each_tag_name(const char **argv, each_tag_name_fn fn)
 290{
 291        const char **p;
 292        char ref[PATH_MAX];
 293        int had_error = 0;
 294        unsigned char sha1[20];
 295
 296        for (p = argv; *p; p++) {
 297                if (snprintf(ref, sizeof(ref), "refs/tags/%s", *p)
 298                                        >= sizeof(ref)) {
 299                        error(_("tag name too long: %.*s..."), 50, *p);
 300                        had_error = 1;
 301                        continue;
 302                }
 303                if (read_ref(ref, sha1)) {
 304                        error(_("tag '%s' not found."), *p);
 305                        had_error = 1;
 306                        continue;
 307                }
 308                if (fn(*p, ref, sha1))
 309                        had_error = 1;
 310        }
 311        return had_error;
 312}
 313
 314static int delete_tag(const char *name, const char *ref,
 315                                const unsigned char *sha1)
 316{
 317        if (delete_ref(ref, sha1, 0))
 318                return 1;
 319        printf(_("Deleted tag '%s' (was %s)\n"), name, find_unique_abbrev(sha1, DEFAULT_ABBREV));
 320        return 0;
 321}
 322
 323static int verify_tag(const char *name, const char *ref,
 324                                const unsigned char *sha1)
 325{
 326        const char *argv_verify_tag[] = {"verify-tag",
 327                                        "-v", "SHA1_HEX", NULL};
 328        argv_verify_tag[2] = sha1_to_hex(sha1);
 329
 330        if (run_command_v_opt(argv_verify_tag, RUN_GIT_CMD))
 331                return error(_("could not verify the tag '%s'"), name);
 332        return 0;
 333}
 334
 335static int do_sign(struct strbuf *buffer)
 336{
 337        return sign_buffer(buffer, buffer, get_signing_key());
 338}
 339
 340static const char tag_template[] =
 341        N_("\nWrite a message for tag:\n  %s\n"
 342        "Lines starting with '%c' will be ignored.\n");
 343
 344static const char tag_template_nocleanup[] =
 345        N_("\nWrite a message for tag:\n  %s\n"
 346        "Lines starting with '%c' will be kept; you may remove them"
 347        " yourself if you want to.\n");
 348
 349static int git_tag_config(const char *var, const char *value, void *cb)
 350{
 351        int status = git_gpg_config(var, value, cb);
 352        if (status)
 353                return status;
 354        if (starts_with(var, "column."))
 355                return git_column_config(var, value, "tag", &colopts);
 356        return git_default_config(var, value, cb);
 357}
 358
 359static void write_tag_body(int fd, const unsigned char *sha1)
 360{
 361        unsigned long size;
 362        enum object_type type;
 363        char *buf, *sp;
 364
 365        buf = read_sha1_file(sha1, &type, &size);
 366        if (!buf)
 367                return;
 368        /* skip header */
 369        sp = strstr(buf, "\n\n");
 370
 371        if (!sp || !size || type != OBJ_TAG) {
 372                free(buf);
 373                return;
 374        }
 375        sp += 2; /* skip the 2 LFs */
 376        write_or_die(fd, sp, parse_signature(sp, buf + size - sp));
 377
 378        free(buf);
 379}
 380
 381static int build_tag_object(struct strbuf *buf, int sign, unsigned char *result)
 382{
 383        if (sign && do_sign(buf) < 0)
 384                return error(_("unable to sign the tag"));
 385        if (write_sha1_file(buf->buf, buf->len, tag_type, result) < 0)
 386                return error(_("unable to write tag file"));
 387        return 0;
 388}
 389
 390struct create_tag_options {
 391        unsigned int message_given:1;
 392        unsigned int sign;
 393        enum {
 394                CLEANUP_NONE,
 395                CLEANUP_SPACE,
 396                CLEANUP_ALL
 397        } cleanup_mode;
 398};
 399
 400static void create_tag(const unsigned char *object, const char *tag,
 401                       struct strbuf *buf, struct create_tag_options *opt,
 402                       unsigned char *prev, unsigned char *result)
 403{
 404        enum object_type type;
 405        char header_buf[1024];
 406        int header_len;
 407        char *path = NULL;
 408
 409        type = sha1_object_info(object, NULL);
 410        if (type <= OBJ_NONE)
 411            die(_("bad object type."));
 412
 413        header_len = snprintf(header_buf, sizeof(header_buf),
 414                          "object %s\n"
 415                          "type %s\n"
 416                          "tag %s\n"
 417                          "tagger %s\n\n",
 418                          sha1_to_hex(object),
 419                          typename(type),
 420                          tag,
 421                          git_committer_info(IDENT_STRICT));
 422
 423        if (header_len > sizeof(header_buf) - 1)
 424                die(_("tag header too big."));
 425
 426        if (!opt->message_given) {
 427                int fd;
 428
 429                /* write the template message before editing: */
 430                path = git_pathdup("TAG_EDITMSG");
 431                fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 432                if (fd < 0)
 433                        die_errno(_("could not create file '%s'"), path);
 434
 435                if (!is_null_sha1(prev)) {
 436                        write_tag_body(fd, prev);
 437                } else {
 438                        struct strbuf buf = STRBUF_INIT;
 439                        strbuf_addch(&buf, '\n');
 440                        if (opt->cleanup_mode == CLEANUP_ALL)
 441                                strbuf_commented_addf(&buf, _(tag_template), tag, comment_line_char);
 442                        else
 443                                strbuf_commented_addf(&buf, _(tag_template_nocleanup), tag, comment_line_char);
 444                        write_or_die(fd, buf.buf, buf.len);
 445                        strbuf_release(&buf);
 446                }
 447                close(fd);
 448
 449                if (launch_editor(path, buf, NULL)) {
 450                        fprintf(stderr,
 451                        _("Please supply the message using either -m or -F option.\n"));
 452                        exit(1);
 453                }
 454        }
 455
 456        if (opt->cleanup_mode != CLEANUP_NONE)
 457                stripspace(buf, opt->cleanup_mode == CLEANUP_ALL);
 458
 459        if (!opt->message_given && !buf->len)
 460                die(_("no tag message?"));
 461
 462        strbuf_insert(buf, 0, header_buf, header_len);
 463
 464        if (build_tag_object(buf, opt->sign, result) < 0) {
 465                if (path)
 466                        fprintf(stderr, _("The tag message has been left in %s\n"),
 467                                path);
 468                exit(128);
 469        }
 470        if (path) {
 471                unlink_or_warn(path);
 472                free(path);
 473        }
 474}
 475
 476struct msg_arg {
 477        int given;
 478        struct strbuf buf;
 479};
 480
 481static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
 482{
 483        struct msg_arg *msg = opt->value;
 484
 485        if (!arg)
 486                return -1;
 487        if (msg->buf.len)
 488                strbuf_addstr(&(msg->buf), "\n\n");
 489        strbuf_addstr(&(msg->buf), arg);
 490        msg->given = 1;
 491        return 0;
 492}
 493
 494static int strbuf_check_tag_ref(struct strbuf *sb, const char *name)
 495{
 496        if (name[0] == '-')
 497                return -1;
 498
 499        strbuf_reset(sb);
 500        strbuf_addf(sb, "refs/tags/%s", name);
 501
 502        return check_refname_format(sb->buf, 0);
 503}
 504
 505static int parse_opt_points_at(const struct option *opt __attribute__((unused)),
 506                        const char *arg, int unset)
 507{
 508        unsigned char sha1[20];
 509
 510        if (unset) {
 511                sha1_array_clear(&points_at);
 512                return 0;
 513        }
 514        if (!arg)
 515                return error(_("switch 'points-at' requires an object"));
 516        if (get_sha1(arg, sha1))
 517                return error(_("malformed object name '%s'"), arg);
 518        sha1_array_append(&points_at, sha1);
 519        return 0;
 520}
 521
 522static int parse_opt_sort(const struct option *opt, const char *arg, int unset)
 523{
 524        int *sort = opt->value;
 525        int flags = 0;
 526
 527        if (skip_prefix(arg, "-", &arg))
 528                flags |= REVERSE_SORT;
 529
 530        if (skip_prefix(arg, "version:", &arg) || skip_prefix(arg, "v:", &arg))
 531                *sort = VERCMP_SORT;
 532        else
 533                *sort = STRCMP_SORT;
 534
 535        if (strcmp(arg, "refname"))
 536                die(_("unsupported sort specification %s"), arg);
 537        *sort |= flags;
 538        return 0;
 539}
 540
 541int cmd_tag(int argc, const char **argv, const char *prefix)
 542{
 543        struct strbuf buf = STRBUF_INIT;
 544        struct strbuf ref = STRBUF_INIT;
 545        unsigned char object[20], prev[20];
 546        const char *object_ref, *tag;
 547        struct ref_lock *lock;
 548        struct create_tag_options opt;
 549        char *cleanup_arg = NULL;
 550        int annotate = 0, force = 0, lines = -1;
 551        int cmdmode = 0, sort = 0;
 552        const char *msgfile = NULL, *keyid = NULL;
 553        struct msg_arg msg = { 0, STRBUF_INIT };
 554        struct commit_list *with_commit = NULL;
 555        struct option options[] = {
 556                OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
 557                { OPTION_INTEGER, 'n', NULL, &lines, N_("n"),
 558                                N_("print <n> lines of each tag message"),
 559                                PARSE_OPT_OPTARG, NULL, 1 },
 560                OPT_CMDMODE('d', "delete", &cmdmode, N_("delete tags"), 'd'),
 561                OPT_CMDMODE('v', "verify", &cmdmode, N_("verify tags"), 'v'),
 562
 563                OPT_GROUP(N_("Tag creation options")),
 564                OPT_BOOL('a', "annotate", &annotate,
 565                                        N_("annotated tag, needs a message")),
 566                OPT_CALLBACK('m', "message", &msg, N_("message"),
 567                             N_("tag message"), parse_msg_arg),
 568                OPT_FILENAME('F', "file", &msgfile, N_("read message from file")),
 569                OPT_BOOL('s', "sign", &opt.sign, N_("annotated and GPG-signed tag")),
 570                OPT_STRING(0, "cleanup", &cleanup_arg, N_("mode"),
 571                        N_("how to strip spaces and #comments from message")),
 572                OPT_STRING('u', "local-user", &keyid, N_("key-id"),
 573                                        N_("use another key to sign the tag")),
 574                OPT__FORCE(&force, N_("replace the tag if exists")),
 575                OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
 576                {
 577                        OPTION_CALLBACK, 0, "sort", &sort, N_("type"), N_("sort tags"),
 578                        PARSE_OPT_NONEG, parse_opt_sort
 579                },
 580
 581                OPT_GROUP(N_("Tag listing options")),
 582                {
 583                        OPTION_CALLBACK, 0, "contains", &with_commit, N_("commit"),
 584                        N_("print only tags that contain the commit"),
 585                        PARSE_OPT_LASTARG_DEFAULT,
 586                        parse_opt_with_commit, (intptr_t)"HEAD",
 587                },
 588                {
 589                        OPTION_CALLBACK, 0, "with", &with_commit, N_("commit"),
 590                        N_("print only tags that contain the commit"),
 591                        PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
 592                        parse_opt_with_commit, (intptr_t)"HEAD",
 593                },
 594                {
 595                        OPTION_CALLBACK, 0, "points-at", NULL, N_("object"),
 596                        N_("print only tags of the object"), 0, parse_opt_points_at
 597                },
 598                OPT_END()
 599        };
 600
 601        git_config(git_tag_config, NULL);
 602
 603        memset(&opt, 0, sizeof(opt));
 604
 605        argc = parse_options(argc, argv, prefix, options, git_tag_usage, 0);
 606
 607        if (keyid) {
 608                opt.sign = 1;
 609                set_signing_key(keyid);
 610        }
 611        if (opt.sign)
 612                annotate = 1;
 613        if (argc == 0 && !cmdmode)
 614                cmdmode = 'l';
 615
 616        if ((annotate || msg.given || msgfile || force) && (cmdmode != 0))
 617                usage_with_options(git_tag_usage, options);
 618
 619        finalize_colopts(&colopts, -1);
 620        if (cmdmode == 'l' && lines != -1) {
 621                if (explicitly_enable_column(colopts))
 622                        die(_("--column and -n are incompatible"));
 623                colopts = 0;
 624        }
 625        if (cmdmode == 'l') {
 626                int ret;
 627                if (column_active(colopts)) {
 628                        struct column_options copts;
 629                        memset(&copts, 0, sizeof(copts));
 630                        copts.padding = 2;
 631                        run_column_filter(colopts, &copts);
 632                }
 633                if (lines != -1 && sort)
 634                        die(_("--sort and -n are incompatible"));
 635                ret = list_tags(argv, lines == -1 ? 0 : lines, with_commit, sort);
 636                if (column_active(colopts))
 637                        stop_column_filter();
 638                return ret;
 639        }
 640        if (lines != -1)
 641                die(_("-n option is only allowed with -l."));
 642        if (with_commit)
 643                die(_("--contains option is only allowed with -l."));
 644        if (points_at.nr)
 645                die(_("--points-at option is only allowed with -l."));
 646        if (cmdmode == 'd')
 647                return for_each_tag_name(argv, delete_tag);
 648        if (cmdmode == 'v')
 649                return for_each_tag_name(argv, verify_tag);
 650
 651        if (msg.given || msgfile) {
 652                if (msg.given && msgfile)
 653                        die(_("only one -F or -m option is allowed."));
 654                annotate = 1;
 655                if (msg.given)
 656                        strbuf_addbuf(&buf, &(msg.buf));
 657                else {
 658                        if (!strcmp(msgfile, "-")) {
 659                                if (strbuf_read(&buf, 0, 1024) < 0)
 660                                        die_errno(_("cannot read '%s'"), msgfile);
 661                        } else {
 662                                if (strbuf_read_file(&buf, msgfile, 1024) < 0)
 663                                        die_errno(_("could not open or read '%s'"),
 664                                                msgfile);
 665                        }
 666                }
 667        }
 668
 669        tag = argv[0];
 670
 671        object_ref = argc == 2 ? argv[1] : "HEAD";
 672        if (argc > 2)
 673                die(_("too many params"));
 674
 675        if (get_sha1(object_ref, object))
 676                die(_("Failed to resolve '%s' as a valid ref."), object_ref);
 677
 678        if (strbuf_check_tag_ref(&ref, tag))
 679                die(_("'%s' is not a valid tag name."), tag);
 680
 681        if (read_ref(ref.buf, prev))
 682                hashclr(prev);
 683        else if (!force)
 684                die(_("tag '%s' already exists"), tag);
 685
 686        opt.message_given = msg.given || msgfile;
 687
 688        if (!cleanup_arg || !strcmp(cleanup_arg, "strip"))
 689                opt.cleanup_mode = CLEANUP_ALL;
 690        else if (!strcmp(cleanup_arg, "verbatim"))
 691                opt.cleanup_mode = CLEANUP_NONE;
 692        else if (!strcmp(cleanup_arg, "whitespace"))
 693                opt.cleanup_mode = CLEANUP_SPACE;
 694        else
 695                die(_("Invalid cleanup mode %s"), cleanup_arg);
 696
 697        if (annotate)
 698                create_tag(object, tag, &buf, &opt, prev, object);
 699
 700        lock = lock_any_ref_for_update(ref.buf, prev, 0, NULL);
 701        if (!lock)
 702                die(_("%s: cannot lock the ref"), ref.buf);
 703        if (write_ref_sha1(lock, object, NULL) < 0)
 704                die(_("%s: cannot update the ref"), ref.buf);
 705        if (force && !is_null_sha1(prev) && hashcmp(prev, object))
 706                printf(_("Updated tag '%s' (was %s)\n"), tag, find_unique_abbrev(prev, DEFAULT_ABBREV));
 707
 708        strbuf_release(&buf);
 709        strbuf_release(&ref);
 710        return 0;
 711}