builtin / remote.con commit for_each_string_list_item: avoid undefined behavior for empty list (ac7da78)
   1#include "builtin.h"
   2#include "config.h"
   3#include "parse-options.h"
   4#include "transport.h"
   5#include "remote.h"
   6#include "string-list.h"
   7#include "strbuf.h"
   8#include "run-command.h"
   9#include "refs.h"
  10#include "argv-array.h"
  11
  12static const char * const builtin_remote_usage[] = {
  13        N_("git remote [-v | --verbose]"),
  14        N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  15        N_("git remote rename <old> <new>"),
  16        N_("git remote remove <name>"),
  17        N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  18        N_("git remote [-v | --verbose] show [-n] <name>"),
  19        N_("git remote prune [-n | --dry-run] <name>"),
  20        N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  21        N_("git remote set-branches [--add] <name> <branch>..."),
  22        N_("git remote get-url [--push] [--all] <name>"),
  23        N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  24        N_("git remote set-url --add <name> <newurl>"),
  25        N_("git remote set-url --delete <name> <url>"),
  26        NULL
  27};
  28
  29static const char * const builtin_remote_add_usage[] = {
  30        N_("git remote add [<options>] <name> <url>"),
  31        NULL
  32};
  33
  34static const char * const builtin_remote_rename_usage[] = {
  35        N_("git remote rename <old> <new>"),
  36        NULL
  37};
  38
  39static const char * const builtin_remote_rm_usage[] = {
  40        N_("git remote remove <name>"),
  41        NULL
  42};
  43
  44static const char * const builtin_remote_sethead_usage[] = {
  45        N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  46        NULL
  47};
  48
  49static const char * const builtin_remote_setbranches_usage[] = {
  50        N_("git remote set-branches <name> <branch>..."),
  51        N_("git remote set-branches --add <name> <branch>..."),
  52        NULL
  53};
  54
  55static const char * const builtin_remote_show_usage[] = {
  56        N_("git remote show [<options>] <name>"),
  57        NULL
  58};
  59
  60static const char * const builtin_remote_prune_usage[] = {
  61        N_("git remote prune [<options>] <name>"),
  62        NULL
  63};
  64
  65static const char * const builtin_remote_update_usage[] = {
  66        N_("git remote update [<options>] [<group> | <remote>]..."),
  67        NULL
  68};
  69
  70static const char * const builtin_remote_geturl_usage[] = {
  71        N_("git remote get-url [--push] [--all] <name>"),
  72        NULL
  73};
  74
  75static const char * const builtin_remote_seturl_usage[] = {
  76        N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  77        N_("git remote set-url --add <name> <newurl>"),
  78        N_("git remote set-url --delete <name> <url>"),
  79        NULL
  80};
  81
  82#define GET_REF_STATES (1<<0)
  83#define GET_HEAD_NAMES (1<<1)
  84#define GET_PUSH_REF_STATES (1<<2)
  85
  86static int verbose;
  87
  88static int fetch_remote(const char *name)
  89{
  90        const char *argv[] = { "fetch", name, NULL, NULL };
  91        if (verbose) {
  92                argv[1] = "-v";
  93                argv[2] = name;
  94        }
  95        printf_ln(_("Updating %s"), name);
  96        if (run_command_v_opt(argv, RUN_GIT_CMD))
  97                return error(_("Could not fetch %s"), name);
  98        return 0;
  99}
 100
 101enum {
 102        TAGS_UNSET = 0,
 103        TAGS_DEFAULT = 1,
 104        TAGS_SET = 2
 105};
 106
 107#define MIRROR_NONE 0
 108#define MIRROR_FETCH 1
 109#define MIRROR_PUSH 2
 110#define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 111
 112static void add_branch(const char *key, const char *branchname,
 113                       const char *remotename, int mirror, struct strbuf *tmp)
 114{
 115        strbuf_reset(tmp);
 116        strbuf_addch(tmp, '+');
 117        if (mirror)
 118                strbuf_addf(tmp, "refs/%s:refs/%s",
 119                                branchname, branchname);
 120        else
 121                strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 122                                branchname, remotename, branchname);
 123        git_config_set_multivar(key, tmp->buf, "^$", 0);
 124}
 125
 126static const char mirror_advice[] =
 127N_("--mirror is dangerous and deprecated; please\n"
 128   "\t use --mirror=fetch or --mirror=push instead");
 129
 130static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 131{
 132        unsigned *mirror = opt->value;
 133        if (not)
 134                *mirror = MIRROR_NONE;
 135        else if (!arg) {
 136                warning("%s", _(mirror_advice));
 137                *mirror = MIRROR_BOTH;
 138        }
 139        else if (!strcmp(arg, "fetch"))
 140                *mirror = MIRROR_FETCH;
 141        else if (!strcmp(arg, "push"))
 142                *mirror = MIRROR_PUSH;
 143        else
 144                return error(_("unknown mirror argument: %s"), arg);
 145        return 0;
 146}
 147
 148static int add(int argc, const char **argv)
 149{
 150        int fetch = 0, fetch_tags = TAGS_DEFAULT;
 151        unsigned mirror = MIRROR_NONE;
 152        struct string_list track = STRING_LIST_INIT_NODUP;
 153        const char *master = NULL;
 154        struct remote *remote;
 155        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 156        const char *name, *url;
 157        int i;
 158
 159        struct option options[] = {
 160                OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 161                OPT_SET_INT(0, "tags", &fetch_tags,
 162                            N_("import all tags and associated objects when fetching"),
 163                            TAGS_SET),
 164                OPT_SET_INT(0, NULL, &fetch_tags,
 165                            N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 166                OPT_STRING_LIST('t', "track", &track, N_("branch"),
 167                                N_("branch(es) to track")),
 168                OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 169                { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 170                        N_("set up remote as a mirror to push to or fetch from"),
 171                        PARSE_OPT_OPTARG, parse_mirror_opt },
 172                OPT_END()
 173        };
 174
 175        argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 176                             0);
 177
 178        if (argc != 2)
 179                usage_with_options(builtin_remote_add_usage, options);
 180
 181        if (mirror && master)
 182                die(_("specifying a master branch makes no sense with --mirror"));
 183        if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 184                die(_("specifying branches to track makes sense only with fetch mirrors"));
 185
 186        name = argv[0];
 187        url = argv[1];
 188
 189        remote = remote_get(name);
 190        if (remote_is_configured(remote, 1))
 191                die(_("remote %s already exists."), name);
 192
 193        strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 194        if (!valid_fetch_refspec(buf2.buf))
 195                die(_("'%s' is not a valid remote name"), name);
 196
 197        strbuf_addf(&buf, "remote.%s.url", name);
 198        git_config_set(buf.buf, url);
 199
 200        if (!mirror || mirror & MIRROR_FETCH) {
 201                strbuf_reset(&buf);
 202                strbuf_addf(&buf, "remote.%s.fetch", name);
 203                if (track.nr == 0)
 204                        string_list_append(&track, "*");
 205                for (i = 0; i < track.nr; i++) {
 206                        add_branch(buf.buf, track.items[i].string,
 207                                   name, mirror, &buf2);
 208                }
 209        }
 210
 211        if (mirror & MIRROR_PUSH) {
 212                strbuf_reset(&buf);
 213                strbuf_addf(&buf, "remote.%s.mirror", name);
 214                git_config_set(buf.buf, "true");
 215        }
 216
 217        if (fetch_tags != TAGS_DEFAULT) {
 218                strbuf_reset(&buf);
 219                strbuf_addf(&buf, "remote.%s.tagopt", name);
 220                git_config_set(buf.buf,
 221                               fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 222        }
 223
 224        if (fetch && fetch_remote(name))
 225                return 1;
 226
 227        if (master) {
 228                strbuf_reset(&buf);
 229                strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 230
 231                strbuf_reset(&buf2);
 232                strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 233
 234                if (create_symref(buf.buf, buf2.buf, "remote add"))
 235                        return error(_("Could not setup master '%s'"), master);
 236        }
 237
 238        strbuf_release(&buf);
 239        strbuf_release(&buf2);
 240        string_list_clear(&track, 0);
 241
 242        return 0;
 243}
 244
 245struct branch_info {
 246        char *remote_name;
 247        struct string_list merge;
 248        enum { NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE } rebase;
 249};
 250
 251static struct string_list branch_list = STRING_LIST_INIT_NODUP;
 252
 253static const char *abbrev_ref(const char *name, const char *prefix)
 254{
 255        skip_prefix(name, prefix, &name);
 256        return name;
 257}
 258#define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 259
 260static int config_read_branches(const char *key, const char *value, void *cb)
 261{
 262        if (starts_with(key, "branch.")) {
 263                const char *orig_key = key;
 264                char *name;
 265                struct string_list_item *item;
 266                struct branch_info *info;
 267                enum { REMOTE, MERGE, REBASE } type;
 268                size_t key_len;
 269
 270                key += 7;
 271                if (strip_suffix(key, ".remote", &key_len)) {
 272                        name = xmemdupz(key, key_len);
 273                        type = REMOTE;
 274                } else if (strip_suffix(key, ".merge", &key_len)) {
 275                        name = xmemdupz(key, key_len);
 276                        type = MERGE;
 277                } else if (strip_suffix(key, ".rebase", &key_len)) {
 278                        name = xmemdupz(key, key_len);
 279                        type = REBASE;
 280                } else
 281                        return 0;
 282
 283                item = string_list_insert(&branch_list, name);
 284
 285                if (!item->util)
 286                        item->util = xcalloc(1, sizeof(struct branch_info));
 287                info = item->util;
 288                if (type == REMOTE) {
 289                        if (info->remote_name)
 290                                warning(_("more than one %s"), orig_key);
 291                        info->remote_name = xstrdup(value);
 292                } else if (type == MERGE) {
 293                        char *space = strchr(value, ' ');
 294                        value = abbrev_branch(value);
 295                        while (space) {
 296                                char *merge;
 297                                merge = xstrndup(value, space - value);
 298                                string_list_append(&info->merge, merge);
 299                                value = abbrev_branch(space + 1);
 300                                space = strchr(value, ' ');
 301                        }
 302                        string_list_append(&info->merge, xstrdup(value));
 303                } else {
 304                        int v = git_config_maybe_bool(orig_key, value);
 305                        if (v >= 0)
 306                                info->rebase = v;
 307                        else if (!strcmp(value, "preserve"))
 308                                info->rebase = NORMAL_REBASE;
 309                        else if (!strcmp(value, "interactive"))
 310                                info->rebase = INTERACTIVE_REBASE;
 311                }
 312        }
 313        return 0;
 314}
 315
 316static void read_branches(void)
 317{
 318        if (branch_list.nr)
 319                return;
 320        git_config(config_read_branches, NULL);
 321}
 322
 323struct ref_states {
 324        struct remote *remote;
 325        struct string_list new, stale, tracked, heads, push;
 326        int queried;
 327};
 328
 329static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 330{
 331        struct ref *fetch_map = NULL, **tail = &fetch_map;
 332        struct ref *ref, *stale_refs;
 333        int i;
 334
 335        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 336                if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 337                        die(_("Could not get fetch map for refspec %s"),
 338                                states->remote->fetch_refspec[i]);
 339
 340        states->new.strdup_strings = 1;
 341        states->tracked.strdup_strings = 1;
 342        states->stale.strdup_strings = 1;
 343        for (ref = fetch_map; ref; ref = ref->next) {
 344                if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 345                        string_list_append(&states->new, abbrev_branch(ref->name));
 346                else
 347                        string_list_append(&states->tracked, abbrev_branch(ref->name));
 348        }
 349        stale_refs = get_stale_heads(states->remote->fetch,
 350                                     states->remote->fetch_refspec_nr, fetch_map);
 351        for (ref = stale_refs; ref; ref = ref->next) {
 352                struct string_list_item *item =
 353                        string_list_append(&states->stale, abbrev_branch(ref->name));
 354                item->util = xstrdup(ref->name);
 355        }
 356        free_refs(stale_refs);
 357        free_refs(fetch_map);
 358
 359        string_list_sort(&states->new);
 360        string_list_sort(&states->tracked);
 361        string_list_sort(&states->stale);
 362
 363        return 0;
 364}
 365
 366struct push_info {
 367        char *dest;
 368        int forced;
 369        enum {
 370                PUSH_STATUS_CREATE = 0,
 371                PUSH_STATUS_DELETE,
 372                PUSH_STATUS_UPTODATE,
 373                PUSH_STATUS_FASTFORWARD,
 374                PUSH_STATUS_OUTOFDATE,
 375                PUSH_STATUS_NOTQUERIED
 376        } status;
 377};
 378
 379static int get_push_ref_states(const struct ref *remote_refs,
 380        struct ref_states *states)
 381{
 382        struct remote *remote = states->remote;
 383        struct ref *ref, *local_refs, *push_map;
 384        if (remote->mirror)
 385                return 0;
 386
 387        local_refs = get_local_heads();
 388        push_map = copy_ref_list(remote_refs);
 389
 390        match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 391                        remote->push_refspec, MATCH_REFS_NONE);
 392
 393        states->push.strdup_strings = 1;
 394        for (ref = push_map; ref; ref = ref->next) {
 395                struct string_list_item *item;
 396                struct push_info *info;
 397
 398                if (!ref->peer_ref)
 399                        continue;
 400                oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 401
 402                item = string_list_append(&states->push,
 403                                          abbrev_branch(ref->peer_ref->name));
 404                item->util = xcalloc(1, sizeof(struct push_info));
 405                info = item->util;
 406                info->forced = ref->force;
 407                info->dest = xstrdup(abbrev_branch(ref->name));
 408
 409                if (is_null_oid(&ref->new_oid)) {
 410                        info->status = PUSH_STATUS_DELETE;
 411                } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
 412                        info->status = PUSH_STATUS_UPTODATE;
 413                else if (is_null_oid(&ref->old_oid))
 414                        info->status = PUSH_STATUS_CREATE;
 415                else if (has_object_file(&ref->old_oid) &&
 416                         ref_newer(&ref->new_oid, &ref->old_oid))
 417                        info->status = PUSH_STATUS_FASTFORWARD;
 418                else
 419                        info->status = PUSH_STATUS_OUTOFDATE;
 420        }
 421        free_refs(local_refs);
 422        free_refs(push_map);
 423        return 0;
 424}
 425
 426static int get_push_ref_states_noquery(struct ref_states *states)
 427{
 428        int i;
 429        struct remote *remote = states->remote;
 430        struct string_list_item *item;
 431        struct push_info *info;
 432
 433        if (remote->mirror)
 434                return 0;
 435
 436        states->push.strdup_strings = 1;
 437        if (!remote->push_refspec_nr) {
 438                item = string_list_append(&states->push, _("(matching)"));
 439                info = item->util = xcalloc(1, sizeof(struct push_info));
 440                info->status = PUSH_STATUS_NOTQUERIED;
 441                info->dest = xstrdup(item->string);
 442        }
 443        for (i = 0; i < remote->push_refspec_nr; i++) {
 444                struct refspec *spec = remote->push + i;
 445                if (spec->matching)
 446                        item = string_list_append(&states->push, _("(matching)"));
 447                else if (strlen(spec->src))
 448                        item = string_list_append(&states->push, spec->src);
 449                else
 450                        item = string_list_append(&states->push, _("(delete)"));
 451
 452                info = item->util = xcalloc(1, sizeof(struct push_info));
 453                info->forced = spec->force;
 454                info->status = PUSH_STATUS_NOTQUERIED;
 455                info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 456        }
 457        return 0;
 458}
 459
 460static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 461{
 462        struct ref *ref, *matches;
 463        struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 464        struct refspec refspec;
 465
 466        refspec.force = 0;
 467        refspec.pattern = 1;
 468        refspec.src = refspec.dst = "refs/heads/*";
 469        states->heads.strdup_strings = 1;
 470        get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 471        matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 472                                    fetch_map, 1);
 473        for (ref = matches; ref; ref = ref->next)
 474                string_list_append(&states->heads, abbrev_branch(ref->name));
 475
 476        free_refs(fetch_map);
 477        free_refs(matches);
 478
 479        return 0;
 480}
 481
 482struct known_remote {
 483        struct known_remote *next;
 484        struct remote *remote;
 485};
 486
 487struct known_remotes {
 488        struct remote *to_delete;
 489        struct known_remote *list;
 490};
 491
 492static int add_known_remote(struct remote *remote, void *cb_data)
 493{
 494        struct known_remotes *all = cb_data;
 495        struct known_remote *r;
 496
 497        if (!strcmp(all->to_delete->name, remote->name))
 498                return 0;
 499
 500        r = xmalloc(sizeof(*r));
 501        r->remote = remote;
 502        r->next = all->list;
 503        all->list = r;
 504        return 0;
 505}
 506
 507struct branches_for_remote {
 508        struct remote *remote;
 509        struct string_list *branches, *skipped;
 510        struct known_remotes *keep;
 511};
 512
 513static int add_branch_for_removal(const char *refname,
 514        const struct object_id *oid, int flags, void *cb_data)
 515{
 516        struct branches_for_remote *branches = cb_data;
 517        struct refspec refspec;
 518        struct known_remote *kr;
 519
 520        memset(&refspec, 0, sizeof(refspec));
 521        refspec.dst = (char *)refname;
 522        if (remote_find_tracking(branches->remote, &refspec))
 523                return 0;
 524
 525        /* don't delete a branch if another remote also uses it */
 526        for (kr = branches->keep->list; kr; kr = kr->next) {
 527                memset(&refspec, 0, sizeof(refspec));
 528                refspec.dst = (char *)refname;
 529                if (!remote_find_tracking(kr->remote, &refspec))
 530                        return 0;
 531        }
 532
 533        /* don't delete non-remote-tracking refs */
 534        if (!starts_with(refname, "refs/remotes/")) {
 535                /* advise user how to delete local branches */
 536                if (starts_with(refname, "refs/heads/"))
 537                        string_list_append(branches->skipped,
 538                                           abbrev_branch(refname));
 539                /* silently skip over other non-remote refs */
 540                return 0;
 541        }
 542
 543        string_list_append(branches->branches, refname);
 544
 545        return 0;
 546}
 547
 548struct rename_info {
 549        const char *old;
 550        const char *new;
 551        struct string_list *remote_branches;
 552};
 553
 554static int read_remote_branches(const char *refname,
 555        const struct object_id *oid, int flags, void *cb_data)
 556{
 557        struct rename_info *rename = cb_data;
 558        struct strbuf buf = STRBUF_INIT;
 559        struct string_list_item *item;
 560        int flag;
 561        struct object_id orig_oid;
 562        const char *symref;
 563
 564        strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 565        if (starts_with(refname, buf.buf)) {
 566                item = string_list_append(rename->remote_branches, xstrdup(refname));
 567                symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 568                                            orig_oid.hash, &flag);
 569                if (flag & REF_ISSYMREF)
 570                        item->util = xstrdup(symref);
 571                else
 572                        item->util = NULL;
 573        }
 574
 575        return 0;
 576}
 577
 578static int migrate_file(struct remote *remote)
 579{
 580        struct strbuf buf = STRBUF_INIT;
 581        int i;
 582
 583        strbuf_addf(&buf, "remote.%s.url", remote->name);
 584        for (i = 0; i < remote->url_nr; i++)
 585                git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 586        strbuf_reset(&buf);
 587        strbuf_addf(&buf, "remote.%s.push", remote->name);
 588        for (i = 0; i < remote->push_refspec_nr; i++)
 589                git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0);
 590        strbuf_reset(&buf);
 591        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 592        for (i = 0; i < remote->fetch_refspec_nr; i++)
 593                git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0);
 594        if (remote->origin == REMOTE_REMOTES)
 595                unlink_or_warn(git_path("remotes/%s", remote->name));
 596        else if (remote->origin == REMOTE_BRANCHES)
 597                unlink_or_warn(git_path("branches/%s", remote->name));
 598
 599        return 0;
 600}
 601
 602static int mv(int argc, const char **argv)
 603{
 604        struct option options[] = {
 605                OPT_END()
 606        };
 607        struct remote *oldremote, *newremote;
 608        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 609                old_remote_context = STRBUF_INIT;
 610        struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 611        struct rename_info rename;
 612        int i, refspec_updated = 0;
 613
 614        if (argc != 3)
 615                usage_with_options(builtin_remote_rename_usage, options);
 616
 617        rename.old = argv[1];
 618        rename.new = argv[2];
 619        rename.remote_branches = &remote_branches;
 620
 621        oldremote = remote_get(rename.old);
 622        if (!remote_is_configured(oldremote, 1))
 623                die(_("No such remote: %s"), rename.old);
 624
 625        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 626                return migrate_file(oldremote);
 627
 628        newremote = remote_get(rename.new);
 629        if (remote_is_configured(newremote, 1))
 630                die(_("remote %s already exists."), rename.new);
 631
 632        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 633        if (!valid_fetch_refspec(buf.buf))
 634                die(_("'%s' is not a valid remote name"), rename.new);
 635
 636        strbuf_reset(&buf);
 637        strbuf_addf(&buf, "remote.%s", rename.old);
 638        strbuf_addf(&buf2, "remote.%s", rename.new);
 639        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 640                return error(_("Could not rename config section '%s' to '%s'"),
 641                                buf.buf, buf2.buf);
 642
 643        strbuf_reset(&buf);
 644        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 645        git_config_set_multivar(buf.buf, NULL, NULL, 1);
 646        strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 647        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 648                char *ptr;
 649
 650                strbuf_reset(&buf2);
 651                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 652                ptr = strstr(buf2.buf, old_remote_context.buf);
 653                if (ptr) {
 654                        refspec_updated = 1;
 655                        strbuf_splice(&buf2,
 656                                      ptr-buf2.buf + strlen(":refs/remotes/"),
 657                                      strlen(rename.old), rename.new,
 658                                      strlen(rename.new));
 659                } else
 660                        warning(_("Not updating non-default fetch refspec\n"
 661                                  "\t%s\n"
 662                                  "\tPlease update the configuration manually if necessary."),
 663                                buf2.buf);
 664
 665                git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 666        }
 667
 668        read_branches();
 669        for (i = 0; i < branch_list.nr; i++) {
 670                struct string_list_item *item = branch_list.items + i;
 671                struct branch_info *info = item->util;
 672                if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 673                        strbuf_reset(&buf);
 674                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 675                        git_config_set(buf.buf, rename.new);
 676                }
 677        }
 678
 679        if (!refspec_updated)
 680                return 0;
 681
 682        /*
 683         * First remove symrefs, then rename the rest, finally create
 684         * the new symrefs.
 685         */
 686        for_each_ref(read_remote_branches, &rename);
 687        for (i = 0; i < remote_branches.nr; i++) {
 688                struct string_list_item *item = remote_branches.items + i;
 689                int flag = 0;
 690                struct object_id oid;
 691
 692                read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 693                if (!(flag & REF_ISSYMREF))
 694                        continue;
 695                if (delete_ref(NULL, item->string, NULL, REF_NODEREF))
 696                        die(_("deleting '%s' failed"), item->string);
 697        }
 698        for (i = 0; i < remote_branches.nr; i++) {
 699                struct string_list_item *item = remote_branches.items + i;
 700
 701                if (item->util)
 702                        continue;
 703                strbuf_reset(&buf);
 704                strbuf_addstr(&buf, item->string);
 705                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 706                                rename.new, strlen(rename.new));
 707                strbuf_reset(&buf2);
 708                strbuf_addf(&buf2, "remote: renamed %s to %s",
 709                                item->string, buf.buf);
 710                if (rename_ref(item->string, buf.buf, buf2.buf))
 711                        die(_("renaming '%s' failed"), item->string);
 712        }
 713        for (i = 0; i < remote_branches.nr; i++) {
 714                struct string_list_item *item = remote_branches.items + i;
 715
 716                if (!item->util)
 717                        continue;
 718                strbuf_reset(&buf);
 719                strbuf_addstr(&buf, item->string);
 720                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 721                                rename.new, strlen(rename.new));
 722                strbuf_reset(&buf2);
 723                strbuf_addstr(&buf2, item->util);
 724                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 725                                rename.new, strlen(rename.new));
 726                strbuf_reset(&buf3);
 727                strbuf_addf(&buf3, "remote: renamed %s to %s",
 728                                item->string, buf.buf);
 729                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 730                        die(_("creating '%s' failed"), buf.buf);
 731        }
 732        return 0;
 733}
 734
 735static int rm(int argc, const char **argv)
 736{
 737        struct option options[] = {
 738                OPT_END()
 739        };
 740        struct remote *remote;
 741        struct strbuf buf = STRBUF_INIT;
 742        struct known_remotes known_remotes = { NULL, NULL };
 743        struct string_list branches = STRING_LIST_INIT_DUP;
 744        struct string_list skipped = STRING_LIST_INIT_DUP;
 745        struct branches_for_remote cb_data;
 746        int i, result;
 747
 748        memset(&cb_data, 0, sizeof(cb_data));
 749        cb_data.branches = &branches;
 750        cb_data.skipped = &skipped;
 751        cb_data.keep = &known_remotes;
 752
 753        if (argc != 2)
 754                usage_with_options(builtin_remote_rm_usage, options);
 755
 756        remote = remote_get(argv[1]);
 757        if (!remote_is_configured(remote, 1))
 758                die(_("No such remote: %s"), argv[1]);
 759
 760        known_remotes.to_delete = remote;
 761        for_each_remote(add_known_remote, &known_remotes);
 762
 763        read_branches();
 764        for (i = 0; i < branch_list.nr; i++) {
 765                struct string_list_item *item = branch_list.items + i;
 766                struct branch_info *info = item->util;
 767                if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 768                        const char *keys[] = { "remote", "merge", NULL }, **k;
 769                        for (k = keys; *k; k++) {
 770                                strbuf_reset(&buf);
 771                                strbuf_addf(&buf, "branch.%s.%s",
 772                                                item->string, *k);
 773                                result = git_config_set_gently(buf.buf, NULL);
 774                                if (result && result != CONFIG_NOTHING_SET)
 775                                        die(_("could not unset '%s'"), buf.buf);
 776                        }
 777                }
 778        }
 779
 780        /*
 781         * We cannot just pass a function to for_each_ref() which deletes
 782         * the branches one by one, since for_each_ref() relies on cached
 783         * refs, which are invalidated when deleting a branch.
 784         */
 785        cb_data.remote = remote;
 786        result = for_each_ref(add_branch_for_removal, &cb_data);
 787        strbuf_release(&buf);
 788
 789        if (!result)
 790                result = delete_refs("remote: remove", &branches, REF_NODEREF);
 791        string_list_clear(&branches, 0);
 792
 793        if (skipped.nr) {
 794                fprintf_ln(stderr,
 795                           Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 796                              "to delete it, use:",
 797                              "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 798                              "to delete them, use:",
 799                              skipped.nr));
 800                for (i = 0; i < skipped.nr; i++)
 801                        fprintf(stderr, "  git branch -d %s\n",
 802                                skipped.items[i].string);
 803        }
 804        string_list_clear(&skipped, 0);
 805
 806        if (!result) {
 807                strbuf_addf(&buf, "remote.%s", remote->name);
 808                if (git_config_rename_section(buf.buf, NULL) < 1)
 809                        return error(_("Could not remove config section '%s'"), buf.buf);
 810        }
 811
 812        return result;
 813}
 814
 815static void clear_push_info(void *util, const char *string)
 816{
 817        struct push_info *info = util;
 818        free(info->dest);
 819        free(info);
 820}
 821
 822static void free_remote_ref_states(struct ref_states *states)
 823{
 824        string_list_clear(&states->new, 0);
 825        string_list_clear(&states->stale, 1);
 826        string_list_clear(&states->tracked, 0);
 827        string_list_clear(&states->heads, 0);
 828        string_list_clear_func(&states->push, clear_push_info);
 829}
 830
 831static int append_ref_to_tracked_list(const char *refname,
 832        const struct object_id *oid, int flags, void *cb_data)
 833{
 834        struct ref_states *states = cb_data;
 835        struct refspec refspec;
 836
 837        if (flags & REF_ISSYMREF)
 838                return 0;
 839
 840        memset(&refspec, 0, sizeof(refspec));
 841        refspec.dst = (char *)refname;
 842        if (!remote_find_tracking(states->remote, &refspec))
 843                string_list_append(&states->tracked, abbrev_branch(refspec.src));
 844
 845        return 0;
 846}
 847
 848static int get_remote_ref_states(const char *name,
 849                                 struct ref_states *states,
 850                                 int query)
 851{
 852        struct transport *transport;
 853        const struct ref *remote_refs;
 854
 855        states->remote = remote_get(name);
 856        if (!states->remote)
 857                return error(_("No such remote: %s"), name);
 858
 859        read_branches();
 860
 861        if (query) {
 862                transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 863                        states->remote->url[0] : NULL);
 864                remote_refs = transport_get_remote_refs(transport);
 865                transport_disconnect(transport);
 866
 867                states->queried = 1;
 868                if (query & GET_REF_STATES)
 869                        get_ref_states(remote_refs, states);
 870                if (query & GET_HEAD_NAMES)
 871                        get_head_names(remote_refs, states);
 872                if (query & GET_PUSH_REF_STATES)
 873                        get_push_ref_states(remote_refs, states);
 874        } else {
 875                for_each_ref(append_ref_to_tracked_list, states);
 876                string_list_sort(&states->tracked);
 877                get_push_ref_states_noquery(states);
 878        }
 879
 880        return 0;
 881}
 882
 883struct show_info {
 884        struct string_list *list;
 885        struct ref_states *states;
 886        int width, width2;
 887        int any_rebase;
 888};
 889
 890static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 891{
 892        struct show_info *info = cb_data;
 893        int n = strlen(item->string);
 894        if (n > info->width)
 895                info->width = n;
 896        string_list_insert(info->list, item->string);
 897        return 0;
 898}
 899
 900static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 901{
 902        struct show_info *info = cb_data;
 903        struct ref_states *states = info->states;
 904        const char *name = item->string;
 905
 906        if (states->queried) {
 907                const char *fmt = "%s";
 908                const char *arg = "";
 909                if (string_list_has_string(&states->new, name)) {
 910                        fmt = _(" new (next fetch will store in remotes/%s)");
 911                        arg = states->remote->name;
 912                } else if (string_list_has_string(&states->tracked, name))
 913                        arg = _(" tracked");
 914                else if (string_list_has_string(&states->stale, name))
 915                        arg = _(" stale (use 'git remote prune' to remove)");
 916                else
 917                        arg = _(" ???");
 918                printf("    %-*s", info->width, name);
 919                printf(fmt, arg);
 920                printf("\n");
 921        } else
 922                printf("    %s\n", name);
 923
 924        return 0;
 925}
 926
 927static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 928{
 929        struct show_info *show_info = cb_data;
 930        struct ref_states *states = show_info->states;
 931        struct branch_info *branch_info = branch_item->util;
 932        struct string_list_item *item;
 933        int n;
 934
 935        if (!branch_info->merge.nr || !branch_info->remote_name ||
 936            strcmp(states->remote->name, branch_info->remote_name))
 937                return 0;
 938        if ((n = strlen(branch_item->string)) > show_info->width)
 939                show_info->width = n;
 940        if (branch_info->rebase)
 941                show_info->any_rebase = 1;
 942
 943        item = string_list_insert(show_info->list, branch_item->string);
 944        item->util = branch_info;
 945
 946        return 0;
 947}
 948
 949static int show_local_info_item(struct string_list_item *item, void *cb_data)
 950{
 951        struct show_info *show_info = cb_data;
 952        struct branch_info *branch_info = item->util;
 953        struct string_list *merge = &branch_info->merge;
 954        int width = show_info->width + 4;
 955        int i;
 956
 957        if (branch_info->rebase && branch_info->merge.nr > 1) {
 958                error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 959                        item->string);
 960                return 0;
 961        }
 962
 963        printf("    %-*s ", show_info->width, item->string);
 964        if (branch_info->rebase) {
 965                printf_ln(branch_info->rebase == INTERACTIVE_REBASE
 966                          ? _("rebases interactively onto remote %s")
 967                          : _("rebases onto remote %s"), merge->items[0].string);
 968                return 0;
 969        } else if (show_info->any_rebase) {
 970                printf_ln(_(" merges with remote %s"), merge->items[0].string);
 971                width++;
 972        } else {
 973                printf_ln(_("merges with remote %s"), merge->items[0].string);
 974        }
 975        for (i = 1; i < merge->nr; i++)
 976                printf(_("%-*s    and with remote %s\n"), width, "",
 977                       merge->items[i].string);
 978
 979        return 0;
 980}
 981
 982static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 983{
 984        struct show_info *show_info = cb_data;
 985        struct push_info *push_info = push_item->util;
 986        struct string_list_item *item;
 987        int n;
 988        if ((n = strlen(push_item->string)) > show_info->width)
 989                show_info->width = n;
 990        if ((n = strlen(push_info->dest)) > show_info->width2)
 991                show_info->width2 = n;
 992        item = string_list_append(show_info->list, push_item->string);
 993        item->util = push_item->util;
 994        return 0;
 995}
 996
 997/*
 998 * Sorting comparison for a string list that has push_info
 999 * structs in its util field
1000 */
1001static int cmp_string_with_push(const void *va, const void *vb)
1002{
1003        const struct string_list_item *a = va;
1004        const struct string_list_item *b = vb;
1005        const struct push_info *a_push = a->util;
1006        const struct push_info *b_push = b->util;
1007        int cmp = strcmp(a->string, b->string);
1008        return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1009}
1010
1011static int show_push_info_item(struct string_list_item *item, void *cb_data)
1012{
1013        struct show_info *show_info = cb_data;
1014        struct push_info *push_info = item->util;
1015        const char *src = item->string, *status = NULL;
1016
1017        switch (push_info->status) {
1018        case PUSH_STATUS_CREATE:
1019                status = _("create");
1020                break;
1021        case PUSH_STATUS_DELETE:
1022                status = _("delete");
1023                src = _("(none)");
1024                break;
1025        case PUSH_STATUS_UPTODATE:
1026                status = _("up to date");
1027                break;
1028        case PUSH_STATUS_FASTFORWARD:
1029                status = _("fast-forwardable");
1030                break;
1031        case PUSH_STATUS_OUTOFDATE:
1032                status = _("local out of date");
1033                break;
1034        case PUSH_STATUS_NOTQUERIED:
1035                break;
1036        }
1037        if (status) {
1038                if (push_info->forced)
1039                        printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1040                               show_info->width2, push_info->dest, status);
1041                else
1042                        printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1043                               show_info->width2, push_info->dest, status);
1044        } else {
1045                if (push_info->forced)
1046                        printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1047                               push_info->dest);
1048                else
1049                        printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1050                               push_info->dest);
1051        }
1052        return 0;
1053}
1054
1055static int get_one_entry(struct remote *remote, void *priv)
1056{
1057        struct string_list *list = priv;
1058        struct strbuf url_buf = STRBUF_INIT;
1059        const char **url;
1060        int i, url_nr;
1061
1062        if (remote->url_nr > 0) {
1063                strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1064                string_list_append(list, remote->name)->util =
1065                                strbuf_detach(&url_buf, NULL);
1066        } else
1067                string_list_append(list, remote->name)->util = NULL;
1068        if (remote->pushurl_nr) {
1069                url = remote->pushurl;
1070                url_nr = remote->pushurl_nr;
1071        } else {
1072                url = remote->url;
1073                url_nr = remote->url_nr;
1074        }
1075        for (i = 0; i < url_nr; i++)
1076        {
1077                strbuf_addf(&url_buf, "%s (push)", url[i]);
1078                string_list_append(list, remote->name)->util =
1079                                strbuf_detach(&url_buf, NULL);
1080        }
1081
1082        return 0;
1083}
1084
1085static int show_all(void)
1086{
1087        struct string_list list = STRING_LIST_INIT_NODUP;
1088        int result;
1089
1090        list.strdup_strings = 1;
1091        result = for_each_remote(get_one_entry, &list);
1092
1093        if (!result) {
1094                int i;
1095
1096                string_list_sort(&list);
1097                for (i = 0; i < list.nr; i++) {
1098                        struct string_list_item *item = list.items + i;
1099                        if (verbose)
1100                                printf("%s\t%s\n", item->string,
1101                                        item->util ? (const char *)item->util : "");
1102                        else {
1103                                if (i && !strcmp((item - 1)->string, item->string))
1104                                        continue;
1105                                printf("%s\n", item->string);
1106                        }
1107                }
1108        }
1109        string_list_clear(&list, 1);
1110        return result;
1111}
1112
1113static int show(int argc, const char **argv)
1114{
1115        int no_query = 0, result = 0, query_flag = 0;
1116        struct option options[] = {
1117                OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1118                OPT_END()
1119        };
1120        struct ref_states states;
1121        struct string_list info_list = STRING_LIST_INIT_NODUP;
1122        struct show_info info;
1123
1124        argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1125                             0);
1126
1127        if (argc < 1)
1128                return show_all();
1129
1130        if (!no_query)
1131                query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1132
1133        memset(&states, 0, sizeof(states));
1134        memset(&info, 0, sizeof(info));
1135        info.states = &states;
1136        info.list = &info_list;
1137        for (; argc; argc--, argv++) {
1138                int i;
1139                const char **url;
1140                int url_nr;
1141
1142                get_remote_ref_states(*argv, &states, query_flag);
1143
1144                printf_ln(_("* remote %s"), *argv);
1145                printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1146                       states.remote->url[0] : _("(no URL)"));
1147                if (states.remote->pushurl_nr) {
1148                        url = states.remote->pushurl;
1149                        url_nr = states.remote->pushurl_nr;
1150                } else {
1151                        url = states.remote->url;
1152                        url_nr = states.remote->url_nr;
1153                }
1154                for (i = 0; i < url_nr; i++)
1155                        /*
1156                         * TRANSLATORS: the colon ':' should align
1157                         * with the one in " Fetch URL: %s"
1158                         * translation.
1159                         */
1160                        printf_ln(_("  Push  URL: %s"), url[i]);
1161                if (!i)
1162                        printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1163                if (no_query)
1164                        printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1165                else if (!states.heads.nr)
1166                        printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1167                else if (states.heads.nr == 1)
1168                        printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1169                else {
1170                        printf(_("  HEAD branch (remote HEAD is ambiguous,"
1171                                 " may be one of the following):\n"));
1172                        for (i = 0; i < states.heads.nr; i++)
1173                                printf("    %s\n", states.heads.items[i].string);
1174                }
1175
1176                /* remote branch info */
1177                info.width = 0;
1178                for_each_string_list(&states.new, add_remote_to_show_info, &info);
1179                for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1180                for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1181                if (info.list->nr)
1182                        printf_ln(Q_("  Remote branch:%s",
1183                                     "  Remote branches:%s",
1184                                     info.list->nr),
1185                                  no_query ? _(" (status not queried)") : "");
1186                for_each_string_list(info.list, show_remote_info_item, &info);
1187                string_list_clear(info.list, 0);
1188
1189                /* git pull info */
1190                info.width = 0;
1191                info.any_rebase = 0;
1192                for_each_string_list(&branch_list, add_local_to_show_info, &info);
1193                if (info.list->nr)
1194                        printf_ln(Q_("  Local branch configured for 'git pull':",
1195                                     "  Local branches configured for 'git pull':",
1196                                     info.list->nr));
1197                for_each_string_list(info.list, show_local_info_item, &info);
1198                string_list_clear(info.list, 0);
1199
1200                /* git push info */
1201                if (states.remote->mirror)
1202                        printf_ln(_("  Local refs will be mirrored by 'git push'"));
1203
1204                info.width = info.width2 = 0;
1205                for_each_string_list(&states.push, add_push_to_show_info, &info);
1206                QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1207                if (info.list->nr)
1208                        printf_ln(Q_("  Local ref configured for 'git push'%s:",
1209                                     "  Local refs configured for 'git push'%s:",
1210                                     info.list->nr),
1211                                  no_query ? _(" (status not queried)") : "");
1212                for_each_string_list(info.list, show_push_info_item, &info);
1213                string_list_clear(info.list, 0);
1214
1215                free_remote_ref_states(&states);
1216        }
1217
1218        return result;
1219}
1220
1221static int set_head(int argc, const char **argv)
1222{
1223        int i, opt_a = 0, opt_d = 0, result = 0;
1224        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1225        char *head_name = NULL;
1226
1227        struct option options[] = {
1228                OPT_BOOL('a', "auto", &opt_a,
1229                         N_("set refs/remotes/<name>/HEAD according to remote")),
1230                OPT_BOOL('d', "delete", &opt_d,
1231                         N_("delete refs/remotes/<name>/HEAD")),
1232                OPT_END()
1233        };
1234        argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1235                             0);
1236        if (argc)
1237                strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1238
1239        if (!opt_a && !opt_d && argc == 2) {
1240                head_name = xstrdup(argv[1]);
1241        } else if (opt_a && !opt_d && argc == 1) {
1242                struct ref_states states;
1243                memset(&states, 0, sizeof(states));
1244                get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1245                if (!states.heads.nr)
1246                        result |= error(_("Cannot determine remote HEAD"));
1247                else if (states.heads.nr > 1) {
1248                        result |= error(_("Multiple remote HEAD branches. "
1249                                          "Please choose one explicitly with:"));
1250                        for (i = 0; i < states.heads.nr; i++)
1251                                fprintf(stderr, "  git remote set-head %s %s\n",
1252                                        argv[0], states.heads.items[i].string);
1253                } else
1254                        head_name = xstrdup(states.heads.items[0].string);
1255                free_remote_ref_states(&states);
1256        } else if (opt_d && !opt_a && argc == 1) {
1257                if (delete_ref(NULL, buf.buf, NULL, REF_NODEREF))
1258                        result |= error(_("Could not delete %s"), buf.buf);
1259        } else
1260                usage_with_options(builtin_remote_sethead_usage, options);
1261
1262        if (head_name) {
1263                strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1264                /* make sure it's valid */
1265                if (!ref_exists(buf2.buf))
1266                        result |= error(_("Not a valid ref: %s"), buf2.buf);
1267                else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1268                        result |= error(_("Could not setup %s"), buf.buf);
1269                if (opt_a)
1270                        printf("%s/HEAD set to %s\n", argv[0], head_name);
1271                free(head_name);
1272        }
1273
1274        strbuf_release(&buf);
1275        strbuf_release(&buf2);
1276        return result;
1277}
1278
1279static int prune_remote(const char *remote, int dry_run)
1280{
1281        int result = 0;
1282        struct ref_states states;
1283        struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1284        struct string_list_item *item;
1285        const char *dangling_msg = dry_run
1286                ? _(" %s will become dangling!")
1287                : _(" %s has become dangling!");
1288
1289        memset(&states, 0, sizeof(states));
1290        get_remote_ref_states(remote, &states, GET_REF_STATES);
1291
1292        if (!states.stale.nr) {
1293                free_remote_ref_states(&states);
1294                return 0;
1295        }
1296
1297        printf_ln(_("Pruning %s"), remote);
1298        printf_ln(_("URL: %s"),
1299                  states.remote->url_nr
1300                  ? states.remote->url[0]
1301                  : _("(no URL)"));
1302
1303        for_each_string_list_item(item, &states.stale)
1304                string_list_append(&refs_to_prune, item->util);
1305        string_list_sort(&refs_to_prune);
1306
1307        if (!dry_run)
1308                result |= delete_refs("remote: prune", &refs_to_prune, 0);
1309
1310        for_each_string_list_item(item, &states.stale) {
1311                const char *refname = item->util;
1312
1313                if (dry_run)
1314                        printf_ln(_(" * [would prune] %s"),
1315                               abbrev_ref(refname, "refs/remotes/"));
1316                else
1317                        printf_ln(_(" * [pruned] %s"),
1318                               abbrev_ref(refname, "refs/remotes/"));
1319        }
1320
1321        warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1322
1323        string_list_clear(&refs_to_prune, 0);
1324        free_remote_ref_states(&states);
1325        return result;
1326}
1327
1328static int prune(int argc, const char **argv)
1329{
1330        int dry_run = 0, result = 0;
1331        struct option options[] = {
1332                OPT__DRY_RUN(&dry_run, N_("dry run")),
1333                OPT_END()
1334        };
1335
1336        argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1337                             0);
1338
1339        if (argc < 1)
1340                usage_with_options(builtin_remote_prune_usage, options);
1341
1342        for (; argc; argc--, argv++)
1343                result |= prune_remote(*argv, dry_run);
1344
1345        return result;
1346}
1347
1348static int get_remote_default(const char *key, const char *value, void *priv)
1349{
1350        if (strcmp(key, "remotes.default") == 0) {
1351                int *found = priv;
1352                *found = 1;
1353        }
1354        return 0;
1355}
1356
1357static int update(int argc, const char **argv)
1358{
1359        int i, prune = -1;
1360        struct option options[] = {
1361                OPT_BOOL('p', "prune", &prune,
1362                         N_("prune remotes after fetching")),
1363                OPT_END()
1364        };
1365        struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1366        int default_defined = 0;
1367        int retval;
1368
1369        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1370                             PARSE_OPT_KEEP_ARGV0);
1371
1372        argv_array_push(&fetch_argv, "fetch");
1373
1374        if (prune != -1)
1375                argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1376        if (verbose)
1377                argv_array_push(&fetch_argv, "-v");
1378        argv_array_push(&fetch_argv, "--multiple");
1379        if (argc < 2)
1380                argv_array_push(&fetch_argv, "default");
1381        for (i = 1; i < argc; i++)
1382                argv_array_push(&fetch_argv, argv[i]);
1383
1384        if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1385                git_config(get_remote_default, &default_defined);
1386                if (!default_defined) {
1387                        argv_array_pop(&fetch_argv);
1388                        argv_array_push(&fetch_argv, "--all");
1389                }
1390        }
1391
1392        retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1393        argv_array_clear(&fetch_argv);
1394        return retval;
1395}
1396
1397static int remove_all_fetch_refspecs(const char *remote, const char *key)
1398{
1399        return git_config_set_multivar_gently(key, NULL, NULL, 1);
1400}
1401
1402static void add_branches(struct remote *remote, const char **branches,
1403                         const char *key)
1404{
1405        const char *remotename = remote->name;
1406        int mirror = remote->mirror;
1407        struct strbuf refspec = STRBUF_INIT;
1408
1409        for (; *branches; branches++)
1410                add_branch(key, *branches, remotename, mirror, &refspec);
1411
1412        strbuf_release(&refspec);
1413}
1414
1415static int set_remote_branches(const char *remotename, const char **branches,
1416                                int add_mode)
1417{
1418        struct strbuf key = STRBUF_INIT;
1419        struct remote *remote;
1420
1421        strbuf_addf(&key, "remote.%s.fetch", remotename);
1422
1423        remote = remote_get(remotename);
1424        if (!remote_is_configured(remote, 1))
1425                die(_("No such remote '%s'"), remotename);
1426
1427        if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1428                strbuf_release(&key);
1429                return 1;
1430        }
1431        add_branches(remote, branches, key.buf);
1432
1433        strbuf_release(&key);
1434        return 0;
1435}
1436
1437static int set_branches(int argc, const char **argv)
1438{
1439        int add_mode = 0;
1440        struct option options[] = {
1441                OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1442                OPT_END()
1443        };
1444
1445        argc = parse_options(argc, argv, NULL, options,
1446                             builtin_remote_setbranches_usage, 0);
1447        if (argc == 0) {
1448                error(_("no remote specified"));
1449                usage_with_options(builtin_remote_setbranches_usage, options);
1450        }
1451        argv[argc] = NULL;
1452
1453        return set_remote_branches(argv[0], argv + 1, add_mode);
1454}
1455
1456static int get_url(int argc, const char **argv)
1457{
1458        int i, push_mode = 0, all_mode = 0;
1459        const char *remotename = NULL;
1460        struct remote *remote;
1461        const char **url;
1462        int url_nr;
1463        struct option options[] = {
1464                OPT_BOOL('\0', "push", &push_mode,
1465                         N_("query push URLs rather than fetch URLs")),
1466                OPT_BOOL('\0', "all", &all_mode,
1467                         N_("return all URLs")),
1468                OPT_END()
1469        };
1470        argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1471
1472        if (argc != 1)
1473                usage_with_options(builtin_remote_geturl_usage, options);
1474
1475        remotename = argv[0];
1476
1477        remote = remote_get(remotename);
1478        if (!remote_is_configured(remote, 1))
1479                die(_("No such remote '%s'"), remotename);
1480
1481        url_nr = 0;
1482        if (push_mode) {
1483                url = remote->pushurl;
1484                url_nr = remote->pushurl_nr;
1485        }
1486        /* else fetch mode */
1487
1488        /* Use the fetch URL when no push URLs were found or requested. */
1489        if (!url_nr) {
1490                url = remote->url;
1491                url_nr = remote->url_nr;
1492        }
1493
1494        if (!url_nr)
1495                die(_("no URLs configured for remote '%s'"), remotename);
1496
1497        if (all_mode) {
1498                for (i = 0; i < url_nr; i++)
1499                        printf_ln("%s", url[i]);
1500        } else {
1501                printf_ln("%s", *url);
1502        }
1503
1504        return 0;
1505}
1506
1507static int set_url(int argc, const char **argv)
1508{
1509        int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1510        int matches = 0, negative_matches = 0;
1511        const char *remotename = NULL;
1512        const char *newurl = NULL;
1513        const char *oldurl = NULL;
1514        struct remote *remote;
1515        regex_t old_regex;
1516        const char **urlset;
1517        int urlset_nr;
1518        struct strbuf name_buf = STRBUF_INIT;
1519        struct option options[] = {
1520                OPT_BOOL('\0', "push", &push_mode,
1521                         N_("manipulate push URLs")),
1522                OPT_BOOL('\0', "add", &add_mode,
1523                         N_("add URL")),
1524                OPT_BOOL('\0', "delete", &delete_mode,
1525                            N_("delete URLs")),
1526                OPT_END()
1527        };
1528        argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1529                             PARSE_OPT_KEEP_ARGV0);
1530
1531        if (add_mode && delete_mode)
1532                die(_("--add --delete doesn't make sense"));
1533
1534        if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1535                usage_with_options(builtin_remote_seturl_usage, options);
1536
1537        remotename = argv[1];
1538        newurl = argv[2];
1539        if (argc > 3)
1540                oldurl = argv[3];
1541
1542        if (delete_mode)
1543                oldurl = newurl;
1544
1545        remote = remote_get(remotename);
1546        if (!remote_is_configured(remote, 1))
1547                die(_("No such remote '%s'"), remotename);
1548
1549        if (push_mode) {
1550                strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1551                urlset = remote->pushurl;
1552                urlset_nr = remote->pushurl_nr;
1553        } else {
1554                strbuf_addf(&name_buf, "remote.%s.url", remotename);
1555                urlset = remote->url;
1556                urlset_nr = remote->url_nr;
1557        }
1558
1559        /* Special cases that add new entry. */
1560        if ((!oldurl && !delete_mode) || add_mode) {
1561                if (add_mode)
1562                        git_config_set_multivar(name_buf.buf, newurl,
1563                                                       "^$", 0);
1564                else
1565                        git_config_set(name_buf.buf, newurl);
1566                strbuf_release(&name_buf);
1567
1568                return 0;
1569        }
1570
1571        /* Old URL specified. Demand that one matches. */
1572        if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1573                die(_("Invalid old URL pattern: %s"), oldurl);
1574
1575        for (i = 0; i < urlset_nr; i++)
1576                if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1577                        matches++;
1578                else
1579                        negative_matches++;
1580        if (!delete_mode && !matches)
1581                die(_("No such URL found: %s"), oldurl);
1582        if (delete_mode && !negative_matches && !push_mode)
1583                die(_("Will not delete all non-push URLs"));
1584
1585        regfree(&old_regex);
1586
1587        if (!delete_mode)
1588                git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1589        else
1590                git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1591        return 0;
1592}
1593
1594int cmd_remote(int argc, const char **argv, const char *prefix)
1595{
1596        struct option options[] = {
1597                OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1598                OPT_END()
1599        };
1600        int result;
1601
1602        argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1603                PARSE_OPT_STOP_AT_NON_OPTION);
1604
1605        if (argc < 1)
1606                result = show_all();
1607        else if (!strcmp(argv[0], "add"))
1608                result = add(argc, argv);
1609        else if (!strcmp(argv[0], "rename"))
1610                result = mv(argc, argv);
1611        else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1612                result = rm(argc, argv);
1613        else if (!strcmp(argv[0], "set-head"))
1614                result = set_head(argc, argv);
1615        else if (!strcmp(argv[0], "set-branches"))
1616                result = set_branches(argc, argv);
1617        else if (!strcmp(argv[0], "get-url"))
1618                result = get_url(argc, argv);
1619        else if (!strcmp(argv[0], "set-url"))
1620                result = set_url(argc, argv);
1621        else if (!strcmp(argv[0], "show"))
1622                result = show(argc, argv);
1623        else if (!strcmp(argv[0], "prune"))
1624                result = prune(argc, argv);
1625        else if (!strcmp(argv[0], "update"))
1626                result = update(argc, argv);
1627        else {
1628                error(_("Unknown subcommand: %s"), argv[0]);
1629                usage_with_options(builtin_remote_usage, options);
1630        }
1631
1632        return result ? 1 : 0;
1633}