Andrew's git / gitweb.git / builtin/tag.c
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builtin / tag.con commit pack-bitmap: add free function (f3c23db)
   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 "config.h"
  11#include "builtin.h"
  12#include "refs.h"
  13#include "tag.h"
  14#include "run-command.h"
  15#include "parse-options.h"
  16#include "diff.h"
  17#include "revision.h"
  18#include "gpg-interface.h"
  19#include "sha1-array.h"
  20#include "column.h"
  21#include "ref-filter.h"
  22
  23static const char * const git_tag_usage[] = {
  24        N_("git tag [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>] <tagname> [<head>]"),
  25        N_("git tag -d <tagname>..."),
  26        N_("git tag -l [-n[<num>]] [--contains <commit>] [--no-contains <commit>] [--points-at <object>]"
  27                "\n\t\t[--format=<format>] [--[no-]merged [<commit>]] [<pattern>...]"),
  28        N_("git tag -v [--format=<format>] <tagname>..."),
  29        NULL
  30};
  31
  32static unsigned int colopts;
  33static int force_sign_annotate;
  34
  35static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting,
  36                     struct ref_format *format)
  37{
  38        struct ref_array array;
  39        char *to_free = NULL;
  40        int i;
  41
  42        memset(&array, 0, sizeof(array));
  43
  44        if (filter->lines == -1)
  45                filter->lines = 0;
  46
  47        if (!format->format) {
  48                if (filter->lines) {
  49                        to_free = xstrfmt("%s %%(contents:lines=%d)",
  50                                          "%(align:15)%(refname:lstrip=2)%(end)",
  51                                          filter->lines);
  52                        format->format = to_free;
  53                } else
  54                        format->format = "%(refname:lstrip=2)";
  55        }
  56
  57        if (verify_ref_format(format))
  58                die(_("unable to parse format string"));
  59        filter->with_commit_tag_algo = 1;
  60        filter_refs(&array, filter, FILTER_REFS_TAGS);
  61        ref_array_sort(sorting, &array);
  62
  63        for (i = 0; i < array.nr; i++)
  64                show_ref_array_item(array.items[i], format);
  65        ref_array_clear(&array);
  66        free(to_free);
  67
  68        return 0;
  69}
  70
  71typedef int (*each_tag_name_fn)(const char *name, const char *ref,
  72                                const struct object_id *oid, const void *cb_data);
  73
  74static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
  75                             const void *cb_data)
  76{
  77        const char **p;
  78        struct strbuf ref = STRBUF_INIT;
  79        int had_error = 0;
  80        struct object_id oid;
  81
  82        for (p = argv; *p; p++) {
  83                strbuf_reset(&ref);
  84                strbuf_addf(&ref, "refs/tags/%s", *p);
  85                if (read_ref(ref.buf, &oid)) {
  86                        error(_("tag '%s' not found."), *p);
  87                        had_error = 1;
  88                        continue;
  89                }
  90                if (fn(*p, ref.buf, &oid, cb_data))
  91                        had_error = 1;
  92        }
  93        strbuf_release(&ref);
  94        return had_error;
  95}
  96
  97static int delete_tag(const char *name, const char *ref,
  98                      const struct object_id *oid, const void *cb_data)
  99{
 100        if (delete_ref(NULL, ref, oid, 0))
 101                return 1;
 102        printf(_("Deleted tag '%s' (was %s)\n"), name,
 103               find_unique_abbrev(oid, DEFAULT_ABBREV));
 104        return 0;
 105}
 106
 107static int verify_tag(const char *name, const char *ref,
 108                      const struct object_id *oid, const void *cb_data)
 109{
 110        int flags;
 111        const struct ref_format *format = cb_data;
 112        flags = GPG_VERIFY_VERBOSE;
 113
 114        if (format->format)
 115                flags = GPG_VERIFY_OMIT_STATUS;
 116
 117        if (gpg_verify_tag(oid, name, flags))
 118                return -1;
 119
 120        if (format->format)
 121                pretty_print_ref(name, oid, format);
 122
 123        return 0;
 124}
 125
 126static int do_sign(struct strbuf *buffer)
 127{
 128        return sign_buffer(buffer, buffer, get_signing_key());
 129}
 130
 131static const char tag_template[] =
 132        N_("\nWrite a message for tag:\n  %s\n"
 133        "Lines starting with '%c' will be ignored.\n");
 134
 135static const char tag_template_nocleanup[] =
 136        N_("\nWrite a message for tag:\n  %s\n"
 137        "Lines starting with '%c' will be kept; you may remove them"
 138        " yourself if you want to.\n");
 139
 140static int git_tag_config(const char *var, const char *value, void *cb)
 141{
 142        int status;
 143        struct ref_sorting **sorting_tail = (struct ref_sorting **)cb;
 144
 145        if (!strcmp(var, "tag.sort")) {
 146                if (!value)
 147                        return config_error_nonbool(var);
 148                parse_ref_sorting(sorting_tail, value);
 149                return 0;
 150        }
 151
 152        status = git_gpg_config(var, value, cb);
 153        if (status)
 154                return status;
 155        if (!strcmp(var, "tag.forcesignannotated")) {
 156                force_sign_annotate = git_config_bool(var, value);
 157                return 0;
 158        }
 159
 160        if (starts_with(var, "column."))
 161                return git_column_config(var, value, "tag", &colopts);
 162        return git_color_default_config(var, value, cb);
 163}
 164
 165static void write_tag_body(int fd, const struct object_id *oid)
 166{
 167        unsigned long size;
 168        enum object_type type;
 169        char *buf, *sp;
 170
 171        buf = read_object_file(oid, &type, &size);
 172        if (!buf)
 173                return;
 174        /* skip header */
 175        sp = strstr(buf, "\n\n");
 176
 177        if (!sp || !size || type != OBJ_TAG) {
 178                free(buf);
 179                return;
 180        }
 181        sp += 2; /* skip the 2 LFs */
 182        write_or_die(fd, sp, parse_signature(sp, buf + size - sp));
 183
 184        free(buf);
 185}
 186
 187static int build_tag_object(struct strbuf *buf, int sign, struct object_id *result)
 188{
 189        if (sign && do_sign(buf) < 0)
 190                return error(_("unable to sign the tag"));
 191        if (write_object_file(buf->buf, buf->len, tag_type, result) < 0)
 192                return error(_("unable to write tag file"));
 193        return 0;
 194}
 195
 196struct create_tag_options {
 197        unsigned int message_given:1;
 198        unsigned int use_editor:1;
 199        unsigned int sign;
 200        enum {
 201                CLEANUP_NONE,
 202                CLEANUP_SPACE,
 203                CLEANUP_ALL
 204        } cleanup_mode;
 205};
 206
 207static void create_tag(const struct object_id *object, const char *tag,
 208                       struct strbuf *buf, struct create_tag_options *opt,
 209                       struct object_id *prev, struct object_id *result)
 210{
 211        enum object_type type;
 212        struct strbuf header = STRBUF_INIT;
 213        char *path = NULL;
 214
 215        type = oid_object_info(the_repository, object, NULL);
 216        if (type <= OBJ_NONE)
 217            die(_("bad object type."));
 218
 219        strbuf_addf(&header,
 220                    "object %s\n"
 221                    "type %s\n"
 222                    "tag %s\n"
 223                    "tagger %s\n\n",
 224                    oid_to_hex(object),
 225                    type_name(type),
 226                    tag,
 227                    git_committer_info(IDENT_STRICT));
 228
 229        if (!opt->message_given || opt->use_editor) {
 230                int fd;
 231
 232                /* write the template message before editing: */
 233                path = git_pathdup("TAG_EDITMSG");
 234                fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 235                if (fd < 0)
 236                        die_errno(_("could not create file '%s'"), path);
 237
 238                if (opt->message_given) {
 239                        write_or_die(fd, buf->buf, buf->len);
 240                        strbuf_reset(buf);
 241                } else if (!is_null_oid(prev)) {
 242                        write_tag_body(fd, prev);
 243                } else {
 244                        struct strbuf buf = STRBUF_INIT;
 245                        strbuf_addch(&buf, '\n');
 246                        if (opt->cleanup_mode == CLEANUP_ALL)
 247                                strbuf_commented_addf(&buf, _(tag_template), tag, comment_line_char);
 248                        else
 249                                strbuf_commented_addf(&buf, _(tag_template_nocleanup), tag, comment_line_char);
 250                        write_or_die(fd, buf.buf, buf.len);
 251                        strbuf_release(&buf);
 252                }
 253                close(fd);
 254
 255                if (launch_editor(path, buf, NULL)) {
 256                        fprintf(stderr,
 257                        _("Please supply the message using either -m or -F option.\n"));
 258                        exit(1);
 259                }
 260        }
 261
 262        if (opt->cleanup_mode != CLEANUP_NONE)
 263                strbuf_stripspace(buf, opt->cleanup_mode == CLEANUP_ALL);
 264
 265        if (!opt->message_given && !buf->len)
 266                die(_("no tag message?"));
 267
 268        strbuf_insert(buf, 0, header.buf, header.len);
 269        strbuf_release(&header);
 270
 271        if (build_tag_object(buf, opt->sign, result) < 0) {
 272                if (path)
 273                        fprintf(stderr, _("The tag message has been left in %s\n"),
 274                                path);
 275                exit(128);
 276        }
 277        if (path) {
 278                unlink_or_warn(path);
 279                free(path);
 280        }
 281}
 282
 283static void create_reflog_msg(const struct object_id *oid, struct strbuf *sb)
 284{
 285        enum object_type type;
 286        struct commit *c;
 287        char *buf;
 288        unsigned long size;
 289        int subject_len = 0;
 290        const char *subject_start;
 291
 292        char *rla = getenv("GIT_REFLOG_ACTION");
 293        if (rla) {
 294                strbuf_addstr(sb, rla);
 295        } else {
 296                strbuf_addstr(sb, "tag: tagging ");
 297                strbuf_add_unique_abbrev(sb, oid, DEFAULT_ABBREV);
 298        }
 299
 300        strbuf_addstr(sb, " (");
 301        type = oid_object_info(the_repository, oid, NULL);
 302        switch (type) {
 303        default:
 304                strbuf_addstr(sb, "object of unknown type");
 305                break;
 306        case OBJ_COMMIT:
 307                if ((buf = read_object_file(oid, &type, &size)) != NULL) {
 308                        subject_len = find_commit_subject(buf, &subject_start);
 309                        strbuf_insert(sb, sb->len, subject_start, subject_len);
 310                } else {
 311                        strbuf_addstr(sb, "commit object");
 312                }
 313                free(buf);
 314
 315                if ((c = lookup_commit_reference(oid)) != NULL)
 316                        strbuf_addf(sb, ", %s", show_date(c->date, 0, DATE_MODE(SHORT)));
 317                break;
 318        case OBJ_TREE:
 319                strbuf_addstr(sb, "tree object");
 320                break;
 321        case OBJ_BLOB:
 322                strbuf_addstr(sb, "blob object");
 323                break;
 324        case OBJ_TAG:
 325                strbuf_addstr(sb, "other tag object");
 326                break;
 327        }
 328        strbuf_addch(sb, ')');
 329}
 330
 331struct msg_arg {
 332        int given;
 333        struct strbuf buf;
 334};
 335
 336static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
 337{
 338        struct msg_arg *msg = opt->value;
 339
 340        if (!arg)
 341                return -1;
 342        if (msg->buf.len)
 343                strbuf_addstr(&(msg->buf), "\n\n");
 344        strbuf_addstr(&(msg->buf), arg);
 345        msg->given = 1;
 346        return 0;
 347}
 348
 349static int strbuf_check_tag_ref(struct strbuf *sb, const char *name)
 350{
 351        if (name[0] == '-')
 352                return -1;
 353
 354        strbuf_reset(sb);
 355        strbuf_addf(sb, "refs/tags/%s", name);
 356
 357        return check_refname_format(sb->buf, 0);
 358}
 359
 360int cmd_tag(int argc, const char **argv, const char *prefix)
 361{
 362        struct strbuf buf = STRBUF_INIT;
 363        struct strbuf ref = STRBUF_INIT;
 364        struct strbuf reflog_msg = STRBUF_INIT;
 365        struct object_id object, prev;
 366        const char *object_ref, *tag;
 367        struct create_tag_options opt;
 368        char *cleanup_arg = NULL;
 369        int create_reflog = 0;
 370        int annotate = 0, force = 0;
 371        int cmdmode = 0, create_tag_object = 0;
 372        const char *msgfile = NULL, *keyid = NULL;
 373        struct msg_arg msg = { 0, STRBUF_INIT };
 374        struct ref_transaction *transaction;
 375        struct strbuf err = STRBUF_INIT;
 376        struct ref_filter filter;
 377        static struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;
 378        struct ref_format format = REF_FORMAT_INIT;
 379        int icase = 0;
 380        int edit_flag = 0;
 381        struct option options[] = {
 382                OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
 383                { OPTION_INTEGER, 'n', NULL, &filter.lines, N_("n"),
 384                                N_("print <n> lines of each tag message"),
 385                                PARSE_OPT_OPTARG, NULL, 1 },
 386                OPT_CMDMODE('d', "delete", &cmdmode, N_("delete tags"), 'd'),
 387                OPT_CMDMODE('v', "verify", &cmdmode, N_("verify tags"), 'v'),
 388
 389                OPT_GROUP(N_("Tag creation options")),
 390                OPT_BOOL('a', "annotate", &annotate,
 391                                        N_("annotated tag, needs a message")),
 392                OPT_CALLBACK('m', "message", &msg, N_("message"),
 393                             N_("tag message"), parse_msg_arg),
 394                OPT_FILENAME('F', "file", &msgfile, N_("read message from file")),
 395                OPT_BOOL('e', "edit", &edit_flag, N_("force edit of tag message")),
 396                OPT_BOOL('s', "sign", &opt.sign, N_("annotated and GPG-signed tag")),
 397                OPT_STRING(0, "cleanup", &cleanup_arg, N_("mode"),
 398                        N_("how to strip spaces and #comments from message")),
 399                OPT_STRING('u', "local-user", &keyid, N_("key-id"),
 400                                        N_("use another key to sign the tag")),
 401                OPT__FORCE(&force, N_("replace the tag if exists"), 0),
 402                OPT_BOOL(0, "create-reflog", &create_reflog, N_("create a reflog")),
 403
 404                OPT_GROUP(N_("Tag listing options")),
 405                OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
 406                OPT_CONTAINS(&filter.with_commit, N_("print only tags that contain the commit")),
 407                OPT_NO_CONTAINS(&filter.no_commit, N_("print only tags that don't contain the commit")),
 408                OPT_WITH(&filter.with_commit, N_("print only tags that contain the commit")),
 409                OPT_WITHOUT(&filter.no_commit, N_("print only tags that don't contain the commit")),
 410                OPT_MERGED(&filter, N_("print only tags that are merged")),
 411                OPT_NO_MERGED(&filter, N_("print only tags that are not merged")),
 412                OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
 413                             N_("field name to sort on"), &parse_opt_ref_sorting),
 414                {
 415                        OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
 416                        N_("print only tags of the object"), PARSE_OPT_LASTARG_DEFAULT,
 417                        parse_opt_object_name, (intptr_t) "HEAD"
 418                },
 419                OPT_STRING(  0 , "format", &format.format, N_("format"),
 420                           N_("format to use for the output")),
 421                OPT__COLOR(&format.use_color, N_("respect format colors")),
 422                OPT_BOOL('i', "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
 423                OPT_END()
 424        };
 425
 426        setup_ref_filter_porcelain_msg();
 427
 428        git_config(git_tag_config, sorting_tail);
 429
 430        memset(&opt, 0, sizeof(opt));
 431        memset(&filter, 0, sizeof(filter));
 432        filter.lines = -1;
 433
 434        argc = parse_options(argc, argv, prefix, options, git_tag_usage, 0);
 435
 436        if (keyid) {
 437                opt.sign = 1;
 438                set_signing_key(keyid);
 439        }
 440        create_tag_object = (opt.sign || annotate || msg.given || msgfile);
 441
 442        if (!cmdmode) {
 443                if (argc == 0)
 444                        cmdmode = 'l';
 445                else if (filter.with_commit || filter.no_commit ||
 446                         filter.points_at.nr || filter.merge_commit ||
 447                         filter.lines != -1)
 448                        cmdmode = 'l';
 449        }
 450
 451        if (cmdmode == 'l')
 452                setup_auto_pager("tag", 1);
 453
 454        if ((create_tag_object || force) && (cmdmode != 0))
 455                usage_with_options(git_tag_usage, options);
 456
 457        finalize_colopts(&colopts, -1);
 458        if (cmdmode == 'l' && filter.lines != -1) {
 459                if (explicitly_enable_column(colopts))
 460                        die(_("--column and -n are incompatible"));
 461                colopts = 0;
 462        }
 463        if (!sorting)
 464                sorting = ref_default_sorting();
 465        sorting->ignore_case = icase;
 466        filter.ignore_case = icase;
 467        if (cmdmode == 'l') {
 468                int ret;
 469                if (column_active(colopts)) {
 470                        struct column_options copts;
 471                        memset(&copts, 0, sizeof(copts));
 472                        copts.padding = 2;
 473                        run_column_filter(colopts, &copts);
 474                }
 475                filter.name_patterns = argv;
 476                ret = list_tags(&filter, sorting, &format);
 477                if (column_active(colopts))
 478                        stop_column_filter();
 479                return ret;
 480        }
 481        if (filter.lines != -1)
 482                die(_("-n option is only allowed in list mode"));
 483        if (filter.with_commit)
 484                die(_("--contains option is only allowed in list mode"));
 485        if (filter.no_commit)
 486                die(_("--no-contains option is only allowed in list mode"));
 487        if (filter.points_at.nr)
 488                die(_("--points-at option is only allowed in list mode"));
 489        if (filter.merge_commit)
 490                die(_("--merged and --no-merged options are only allowed in list mode"));
 491        if (cmdmode == 'd')
 492                return for_each_tag_name(argv, delete_tag, NULL);
 493        if (cmdmode == 'v') {
 494                if (format.format && verify_ref_format(&format))
 495                        usage_with_options(git_tag_usage, options);
 496                return for_each_tag_name(argv, verify_tag, &format);
 497        }
 498
 499        if (msg.given || msgfile) {
 500                if (msg.given && msgfile)
 501                        die(_("only one -F or -m option is allowed."));
 502                if (msg.given)
 503                        strbuf_addbuf(&buf, &(msg.buf));
 504                else {
 505                        if (!strcmp(msgfile, "-")) {
 506                                if (strbuf_read(&buf, 0, 1024) < 0)
 507                                        die_errno(_("cannot read '%s'"), msgfile);
 508                        } else {
 509                                if (strbuf_read_file(&buf, msgfile, 1024) < 0)
 510                                        die_errno(_("could not open or read '%s'"),
 511                                                msgfile);
 512                        }
 513                }
 514        }
 515
 516        tag = argv[0];
 517
 518        object_ref = argc == 2 ? argv[1] : "HEAD";
 519        if (argc > 2)
 520                die(_("too many params"));
 521
 522        if (get_oid(object_ref, &object))
 523                die(_("Failed to resolve '%s' as a valid ref."), object_ref);
 524
 525        if (strbuf_check_tag_ref(&ref, tag))
 526                die(_("'%s' is not a valid tag name."), tag);
 527
 528        if (read_ref(ref.buf, &prev))
 529                oidclr(&prev);
 530        else if (!force)
 531                die(_("tag '%s' already exists"), tag);
 532
 533        opt.message_given = msg.given || msgfile;
 534        opt.use_editor = edit_flag;
 535
 536        if (!cleanup_arg || !strcmp(cleanup_arg, "strip"))
 537                opt.cleanup_mode = CLEANUP_ALL;
 538        else if (!strcmp(cleanup_arg, "verbatim"))
 539                opt.cleanup_mode = CLEANUP_NONE;
 540        else if (!strcmp(cleanup_arg, "whitespace"))
 541                opt.cleanup_mode = CLEANUP_SPACE;
 542        else
 543                die(_("Invalid cleanup mode %s"), cleanup_arg);
 544
 545        create_reflog_msg(&object, &reflog_msg);
 546
 547        if (create_tag_object) {
 548                if (force_sign_annotate && !annotate)
 549                        opt.sign = 1;
 550                create_tag(&object, tag, &buf, &opt, &prev, &object);
 551        }
 552
 553        transaction = ref_transaction_begin(&err);
 554        if (!transaction ||
 555            ref_transaction_update(transaction, ref.buf, &object, &prev,
 556                                   create_reflog ? REF_FORCE_CREATE_REFLOG : 0,
 557                                   reflog_msg.buf, &err) ||
 558            ref_transaction_commit(transaction, &err))
 559                die("%s", err.buf);
 560        ref_transaction_free(transaction);
 561        if (force && !is_null_oid(&prev) && oidcmp(&prev, &object))
 562                printf(_("Updated tag '%s' (was %s)\n"), tag,
 563                       find_unique_abbrev(&prev, DEFAULT_ABBREV));
 564
 565        UNLEAK(buf);
 566        UNLEAK(ref);
 567        UNLEAK(reflog_msg);
 568        UNLEAK(msg);
 569        UNLEAK(err);
 570        return 0;
 571}