builtin / remote.con commit checkout: relocate --to's "no branch specified" check (9559ce8)
   1#include "builtin.h"
   2#include "parse-options.h"
   3#include "transport.h"
   4#include "remote.h"
   5#include "string-list.h"
   6#include "strbuf.h"
   7#include "run-command.h"
   8#include "refs.h"
   9#include "argv-array.h"
  10
  11static const char * const builtin_remote_usage[] = {
  12        N_("git remote [-v | --verbose]"),
  13        N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags|--no-tags] [--mirror=<fetch|push>] <name> <url>"),
  14        N_("git remote rename <old> <new>"),
  15        N_("git remote remove <name>"),
  16        N_("git remote set-head <name> (-a | --auto | -d | --delete |<branch>)"),
  17        N_("git remote [-v | --verbose] show [-n] <name>"),
  18        N_("git remote prune [-n | --dry-run] <name>"),
  19        N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  20        N_("git remote set-branches [--add] <name> <branch>..."),
  21        N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  22        N_("git remote set-url --add <name> <newurl>"),
  23        N_("git remote set-url --delete <name> <url>"),
  24        NULL
  25};
  26
  27static const char * const builtin_remote_add_usage[] = {
  28        N_("git remote add [<options>] <name> <url>"),
  29        NULL
  30};
  31
  32static const char * const builtin_remote_rename_usage[] = {
  33        N_("git remote rename <old> <new>"),
  34        NULL
  35};
  36
  37static const char * const builtin_remote_rm_usage[] = {
  38        N_("git remote remove <name>"),
  39        NULL
  40};
  41
  42static const char * const builtin_remote_sethead_usage[] = {
  43        N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  44        NULL
  45};
  46
  47static const char * const builtin_remote_setbranches_usage[] = {
  48        N_("git remote set-branches <name> <branch>..."),
  49        N_("git remote set-branches --add <name> <branch>..."),
  50        NULL
  51};
  52
  53static const char * const builtin_remote_show_usage[] = {
  54        N_("git remote show [<options>] <name>"),
  55        NULL
  56};
  57
  58static const char * const builtin_remote_prune_usage[] = {
  59        N_("git remote prune [<options>] <name>"),
  60        NULL
  61};
  62
  63static const char * const builtin_remote_update_usage[] = {
  64        N_("git remote update [<options>] [<group> | <remote>]..."),
  65        NULL
  66};
  67
  68static const char * const builtin_remote_seturl_usage[] = {
  69        N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  70        N_("git remote set-url --add <name> <newurl>"),
  71        N_("git remote set-url --delete <name> <url>"),
  72        NULL
  73};
  74
  75#define GET_REF_STATES (1<<0)
  76#define GET_HEAD_NAMES (1<<1)
  77#define GET_PUSH_REF_STATES (1<<2)
  78
  79static int verbose;
  80
  81static int fetch_remote(const char *name)
  82{
  83        const char *argv[] = { "fetch", name, NULL, NULL };
  84        if (verbose) {
  85                argv[1] = "-v";
  86                argv[2] = name;
  87        }
  88        printf_ln(_("Updating %s"), name);
  89        if (run_command_v_opt(argv, RUN_GIT_CMD))
  90                return error(_("Could not fetch %s"), name);
  91        return 0;
  92}
  93
  94enum {
  95        TAGS_UNSET = 0,
  96        TAGS_DEFAULT = 1,
  97        TAGS_SET = 2
  98};
  99
 100#define MIRROR_NONE 0
 101#define MIRROR_FETCH 1
 102#define MIRROR_PUSH 2
 103#define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 104
 105static int add_branch(const char *key, const char *branchname,
 106                const char *remotename, int mirror, struct strbuf *tmp)
 107{
 108        strbuf_reset(tmp);
 109        strbuf_addch(tmp, '+');
 110        if (mirror)
 111                strbuf_addf(tmp, "refs/%s:refs/%s",
 112                                branchname, branchname);
 113        else
 114                strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 115                                branchname, remotename, branchname);
 116        return git_config_set_multivar(key, tmp->buf, "^$", 0);
 117}
 118
 119static const char mirror_advice[] =
 120N_("--mirror is dangerous and deprecated; please\n"
 121   "\t use --mirror=fetch or --mirror=push instead");
 122
 123static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 124{
 125        unsigned *mirror = opt->value;
 126        if (not)
 127                *mirror = MIRROR_NONE;
 128        else if (!arg) {
 129                warning("%s", _(mirror_advice));
 130                *mirror = MIRROR_BOTH;
 131        }
 132        else if (!strcmp(arg, "fetch"))
 133                *mirror = MIRROR_FETCH;
 134        else if (!strcmp(arg, "push"))
 135                *mirror = MIRROR_PUSH;
 136        else
 137                return error(_("unknown mirror argument: %s"), arg);
 138        return 0;
 139}
 140
 141static int add(int argc, const char **argv)
 142{
 143        int fetch = 0, fetch_tags = TAGS_DEFAULT;
 144        unsigned mirror = MIRROR_NONE;
 145        struct string_list track = STRING_LIST_INIT_NODUP;
 146        const char *master = NULL;
 147        struct remote *remote;
 148        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 149        const char *name, *url;
 150        int i;
 151
 152        struct option options[] = {
 153                OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 154                OPT_SET_INT(0, "tags", &fetch_tags,
 155                            N_("import all tags and associated objects when fetching"),
 156                            TAGS_SET),
 157                OPT_SET_INT(0, NULL, &fetch_tags,
 158                            N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 159                OPT_STRING_LIST('t', "track", &track, N_("branch"),
 160                                N_("branch(es) to track")),
 161                OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 162                { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 163                        N_("set up remote as a mirror to push to or fetch from"),
 164                        PARSE_OPT_OPTARG, parse_mirror_opt },
 165                OPT_END()
 166        };
 167
 168        argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 169                             0);
 170
 171        if (argc != 2)
 172                usage_with_options(builtin_remote_add_usage, options);
 173
 174        if (mirror && master)
 175                die(_("specifying a master branch makes no sense with --mirror"));
 176        if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 177                die(_("specifying branches to track makes sense only with fetch mirrors"));
 178
 179        name = argv[0];
 180        url = argv[1];
 181
 182        remote = remote_get(name);
 183        if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 184                        remote->fetch_refspec_nr))
 185                die(_("remote %s already exists."), name);
 186
 187        strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 188        if (!valid_fetch_refspec(buf2.buf))
 189                die(_("'%s' is not a valid remote name"), name);
 190
 191        strbuf_addf(&buf, "remote.%s.url", name);
 192        if (git_config_set(buf.buf, url))
 193                return 1;
 194
 195        if (!mirror || mirror & MIRROR_FETCH) {
 196                strbuf_reset(&buf);
 197                strbuf_addf(&buf, "remote.%s.fetch", name);
 198                if (track.nr == 0)
 199                        string_list_append(&track, "*");
 200                for (i = 0; i < track.nr; i++) {
 201                        if (add_branch(buf.buf, track.items[i].string,
 202                                       name, mirror, &buf2))
 203                                return 1;
 204                }
 205        }
 206
 207        if (mirror & MIRROR_PUSH) {
 208                strbuf_reset(&buf);
 209                strbuf_addf(&buf, "remote.%s.mirror", name);
 210                if (git_config_set(buf.buf, "true"))
 211                        return 1;
 212        }
 213
 214        if (fetch_tags != TAGS_DEFAULT) {
 215                strbuf_reset(&buf);
 216                strbuf_addf(&buf, "remote.%s.tagopt", name);
 217                if (git_config_set(buf.buf,
 218                        fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 219                        return 1;
 220        }
 221
 222        if (fetch && fetch_remote(name))
 223                return 1;
 224
 225        if (master) {
 226                strbuf_reset(&buf);
 227                strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 228
 229                strbuf_reset(&buf2);
 230                strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 231
 232                if (create_symref(buf.buf, buf2.buf, "remote add"))
 233                        return error(_("Could not setup master '%s'"), master);
 234        }
 235
 236        strbuf_release(&buf);
 237        strbuf_release(&buf2);
 238        string_list_clear(&track, 0);
 239
 240        return 0;
 241}
 242
 243struct branch_info {
 244        char *remote_name;
 245        struct string_list merge;
 246        int rebase;
 247};
 248
 249static struct string_list branch_list;
 250
 251static const char *abbrev_ref(const char *name, const char *prefix)
 252{
 253        skip_prefix(name, prefix, &name);
 254        return name;
 255}
 256#define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 257
 258static int config_read_branches(const char *key, const char *value, void *cb)
 259{
 260        if (starts_with(key, "branch.")) {
 261                const char *orig_key = key;
 262                char *name;
 263                struct string_list_item *item;
 264                struct branch_info *info;
 265                enum { REMOTE, MERGE, REBASE } type;
 266                size_t key_len;
 267
 268                key += 7;
 269                if (strip_suffix(key, ".remote", &key_len)) {
 270                        name = xmemdupz(key, key_len);
 271                        type = REMOTE;
 272                } else if (strip_suffix(key, ".merge", &key_len)) {
 273                        name = xmemdupz(key, key_len);
 274                        type = MERGE;
 275                } else if (strip_suffix(key, ".rebase", &key_len)) {
 276                        name = xmemdupz(key, key_len);
 277                        type = REBASE;
 278                } else
 279                        return 0;
 280
 281                item = string_list_insert(&branch_list, name);
 282
 283                if (!item->util)
 284                        item->util = xcalloc(1, sizeof(struct branch_info));
 285                info = item->util;
 286                if (type == REMOTE) {
 287                        if (info->remote_name)
 288                                warning(_("more than one %s"), orig_key);
 289                        info->remote_name = xstrdup(value);
 290                } else if (type == MERGE) {
 291                        char *space = strchr(value, ' ');
 292                        value = abbrev_branch(value);
 293                        while (space) {
 294                                char *merge;
 295                                merge = xstrndup(value, space - value);
 296                                string_list_append(&info->merge, merge);
 297                                value = abbrev_branch(space + 1);
 298                                space = strchr(value, ' ');
 299                        }
 300                        string_list_append(&info->merge, xstrdup(value));
 301                } else {
 302                        int v = git_config_maybe_bool(orig_key, value);
 303                        if (v >= 0)
 304                                info->rebase = v;
 305                        else if (!strcmp(value, "preserve"))
 306                                info->rebase = 1;
 307                }
 308        }
 309        return 0;
 310}
 311
 312static void read_branches(void)
 313{
 314        if (branch_list.nr)
 315                return;
 316        git_config(config_read_branches, NULL);
 317}
 318
 319struct ref_states {
 320        struct remote *remote;
 321        struct string_list new, stale, tracked, heads, push;
 322        int queried;
 323};
 324
 325static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 326{
 327        struct ref *fetch_map = NULL, **tail = &fetch_map;
 328        struct ref *ref, *stale_refs;
 329        int i;
 330
 331        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 332                if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 333                        die(_("Could not get fetch map for refspec %s"),
 334                                states->remote->fetch_refspec[i]);
 335
 336        states->new.strdup_strings = 1;
 337        states->tracked.strdup_strings = 1;
 338        states->stale.strdup_strings = 1;
 339        for (ref = fetch_map; ref; ref = ref->next) {
 340                if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 341                        string_list_append(&states->new, abbrev_branch(ref->name));
 342                else
 343                        string_list_append(&states->tracked, abbrev_branch(ref->name));
 344        }
 345        stale_refs = get_stale_heads(states->remote->fetch,
 346                                     states->remote->fetch_refspec_nr, fetch_map);
 347        for (ref = stale_refs; ref; ref = ref->next) {
 348                struct string_list_item *item =
 349                        string_list_append(&states->stale, abbrev_branch(ref->name));
 350                item->util = xstrdup(ref->name);
 351        }
 352        free_refs(stale_refs);
 353        free_refs(fetch_map);
 354
 355        sort_string_list(&states->new);
 356        sort_string_list(&states->tracked);
 357        sort_string_list(&states->stale);
 358
 359        return 0;
 360}
 361
 362struct push_info {
 363        char *dest;
 364        int forced;
 365        enum {
 366                PUSH_STATUS_CREATE = 0,
 367                PUSH_STATUS_DELETE,
 368                PUSH_STATUS_UPTODATE,
 369                PUSH_STATUS_FASTFORWARD,
 370                PUSH_STATUS_OUTOFDATE,
 371                PUSH_STATUS_NOTQUERIED
 372        } status;
 373};
 374
 375static int get_push_ref_states(const struct ref *remote_refs,
 376        struct ref_states *states)
 377{
 378        struct remote *remote = states->remote;
 379        struct ref *ref, *local_refs, *push_map;
 380        if (remote->mirror)
 381                return 0;
 382
 383        local_refs = get_local_heads();
 384        push_map = copy_ref_list(remote_refs);
 385
 386        match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 387                        remote->push_refspec, MATCH_REFS_NONE);
 388
 389        states->push.strdup_strings = 1;
 390        for (ref = push_map; ref; ref = ref->next) {
 391                struct string_list_item *item;
 392                struct push_info *info;
 393
 394                if (!ref->peer_ref)
 395                        continue;
 396                hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 397
 398                item = string_list_append(&states->push,
 399                                          abbrev_branch(ref->peer_ref->name));
 400                item->util = xcalloc(1, sizeof(struct push_info));
 401                info = item->util;
 402                info->forced = ref->force;
 403                info->dest = xstrdup(abbrev_branch(ref->name));
 404
 405                if (is_null_sha1(ref->new_sha1)) {
 406                        info->status = PUSH_STATUS_DELETE;
 407                } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 408                        info->status = PUSH_STATUS_UPTODATE;
 409                else if (is_null_sha1(ref->old_sha1))
 410                        info->status = PUSH_STATUS_CREATE;
 411                else if (has_sha1_file(ref->old_sha1) &&
 412                         ref_newer(ref->new_sha1, ref->old_sha1))
 413                        info->status = PUSH_STATUS_FASTFORWARD;
 414                else
 415                        info->status = PUSH_STATUS_OUTOFDATE;
 416        }
 417        free_refs(local_refs);
 418        free_refs(push_map);
 419        return 0;
 420}
 421
 422static int get_push_ref_states_noquery(struct ref_states *states)
 423{
 424        int i;
 425        struct remote *remote = states->remote;
 426        struct string_list_item *item;
 427        struct push_info *info;
 428
 429        if (remote->mirror)
 430                return 0;
 431
 432        states->push.strdup_strings = 1;
 433        if (!remote->push_refspec_nr) {
 434                item = string_list_append(&states->push, _("(matching)"));
 435                info = item->util = xcalloc(1, sizeof(struct push_info));
 436                info->status = PUSH_STATUS_NOTQUERIED;
 437                info->dest = xstrdup(item->string);
 438        }
 439        for (i = 0; i < remote->push_refspec_nr; i++) {
 440                struct refspec *spec = remote->push + i;
 441                if (spec->matching)
 442                        item = string_list_append(&states->push, _("(matching)"));
 443                else if (strlen(spec->src))
 444                        item = string_list_append(&states->push, spec->src);
 445                else
 446                        item = string_list_append(&states->push, _("(delete)"));
 447
 448                info = item->util = xcalloc(1, sizeof(struct push_info));
 449                info->forced = spec->force;
 450                info->status = PUSH_STATUS_NOTQUERIED;
 451                info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 452        }
 453        return 0;
 454}
 455
 456static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 457{
 458        struct ref *ref, *matches;
 459        struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 460        struct refspec refspec;
 461
 462        refspec.force = 0;
 463        refspec.pattern = 1;
 464        refspec.src = refspec.dst = "refs/heads/*";
 465        states->heads.strdup_strings = 1;
 466        get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 467        matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 468                                    fetch_map, 1);
 469        for (ref = matches; ref; ref = ref->next)
 470                string_list_append(&states->heads, abbrev_branch(ref->name));
 471
 472        free_refs(fetch_map);
 473        free_refs(matches);
 474
 475        return 0;
 476}
 477
 478struct known_remote {
 479        struct known_remote *next;
 480        struct remote *remote;
 481};
 482
 483struct known_remotes {
 484        struct remote *to_delete;
 485        struct known_remote *list;
 486};
 487
 488static int add_known_remote(struct remote *remote, void *cb_data)
 489{
 490        struct known_remotes *all = cb_data;
 491        struct known_remote *r;
 492
 493        if (!strcmp(all->to_delete->name, remote->name))
 494                return 0;
 495
 496        r = xmalloc(sizeof(*r));
 497        r->remote = remote;
 498        r->next = all->list;
 499        all->list = r;
 500        return 0;
 501}
 502
 503struct branches_for_remote {
 504        struct remote *remote;
 505        struct string_list *branches, *skipped;
 506        struct known_remotes *keep;
 507};
 508
 509static int add_branch_for_removal(const char *refname,
 510        const unsigned char *sha1, int flags, void *cb_data)
 511{
 512        struct branches_for_remote *branches = cb_data;
 513        struct refspec refspec;
 514        struct string_list_item *item;
 515        struct known_remote *kr;
 516
 517        memset(&refspec, 0, sizeof(refspec));
 518        refspec.dst = (char *)refname;
 519        if (remote_find_tracking(branches->remote, &refspec))
 520                return 0;
 521
 522        /* don't delete a branch if another remote also uses it */
 523        for (kr = branches->keep->list; kr; kr = kr->next) {
 524                memset(&refspec, 0, sizeof(refspec));
 525                refspec.dst = (char *)refname;
 526                if (!remote_find_tracking(kr->remote, &refspec))
 527                        return 0;
 528        }
 529
 530        /* don't delete non-remote-tracking refs */
 531        if (!starts_with(refname, "refs/remotes/")) {
 532                /* advise user how to delete local branches */
 533                if (starts_with(refname, "refs/heads/"))
 534                        string_list_append(branches->skipped,
 535                                           abbrev_branch(refname));
 536                /* silently skip over other non-remote refs */
 537                return 0;
 538        }
 539
 540        /* make sure that symrefs are deleted */
 541        if (flags & REF_ISSYMREF)
 542                return unlink(git_path("%s", refname));
 543
 544        item = string_list_append(branches->branches, refname);
 545        item->util = xmalloc(20);
 546        hashcpy(item->util, sha1);
 547
 548        return 0;
 549}
 550
 551struct rename_info {
 552        const char *old;
 553        const char *new;
 554        struct string_list *remote_branches;
 555};
 556
 557static int read_remote_branches(const char *refname,
 558        const unsigned char *sha1, int flags, void *cb_data)
 559{
 560        struct rename_info *rename = cb_data;
 561        struct strbuf buf = STRBUF_INIT;
 562        struct string_list_item *item;
 563        int flag;
 564        unsigned char orig_sha1[20];
 565        const char *symref;
 566
 567        strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 568        if (starts_with(refname, buf.buf)) {
 569                item = string_list_append(rename->remote_branches, xstrdup(refname));
 570                symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 571                                            orig_sha1, &flag);
 572                if (flag & REF_ISSYMREF)
 573                        item->util = xstrdup(symref);
 574                else
 575                        item->util = NULL;
 576        }
 577
 578        return 0;
 579}
 580
 581static int migrate_file(struct remote *remote)
 582{
 583        struct strbuf buf = STRBUF_INIT;
 584        int i;
 585        const char *path = NULL;
 586
 587        strbuf_addf(&buf, "remote.%s.url", remote->name);
 588        for (i = 0; i < remote->url_nr; i++)
 589                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 590                        return error(_("Could not append '%s' to '%s'"),
 591                                        remote->url[i], buf.buf);
 592        strbuf_reset(&buf);
 593        strbuf_addf(&buf, "remote.%s.push", remote->name);
 594        for (i = 0; i < remote->push_refspec_nr; i++)
 595                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 596                        return error(_("Could not append '%s' to '%s'"),
 597                                        remote->push_refspec[i], buf.buf);
 598        strbuf_reset(&buf);
 599        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 600        for (i = 0; i < remote->fetch_refspec_nr; i++)
 601                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 602                        return error(_("Could not append '%s' to '%s'"),
 603                                        remote->fetch_refspec[i], buf.buf);
 604        if (remote->origin == REMOTE_REMOTES)
 605                path = git_path("remotes/%s", remote->name);
 606        else if (remote->origin == REMOTE_BRANCHES)
 607                path = git_path("branches/%s", remote->name);
 608        if (path)
 609                unlink_or_warn(path);
 610        return 0;
 611}
 612
 613static int mv(int argc, const char **argv)
 614{
 615        struct option options[] = {
 616                OPT_END()
 617        };
 618        struct remote *oldremote, *newremote;
 619        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 620                old_remote_context = STRBUF_INIT;
 621        struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 622        struct rename_info rename;
 623        int i, refspec_updated = 0;
 624
 625        if (argc != 3)
 626                usage_with_options(builtin_remote_rename_usage, options);
 627
 628        rename.old = argv[1];
 629        rename.new = argv[2];
 630        rename.remote_branches = &remote_branches;
 631
 632        oldremote = remote_get(rename.old);
 633        if (!oldremote)
 634                die(_("No such remote: %s"), rename.old);
 635
 636        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 637                return migrate_file(oldremote);
 638
 639        newremote = remote_get(rename.new);
 640        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 641                die(_("remote %s already exists."), rename.new);
 642
 643        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 644        if (!valid_fetch_refspec(buf.buf))
 645                die(_("'%s' is not a valid remote name"), rename.new);
 646
 647        strbuf_reset(&buf);
 648        strbuf_addf(&buf, "remote.%s", rename.old);
 649        strbuf_addf(&buf2, "remote.%s", rename.new);
 650        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 651                return error(_("Could not rename config section '%s' to '%s'"),
 652                                buf.buf, buf2.buf);
 653
 654        strbuf_reset(&buf);
 655        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 656        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 657                return error(_("Could not remove config section '%s'"), buf.buf);
 658        strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 659        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 660                char *ptr;
 661
 662                strbuf_reset(&buf2);
 663                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 664                ptr = strstr(buf2.buf, old_remote_context.buf);
 665                if (ptr) {
 666                        refspec_updated = 1;
 667                        strbuf_splice(&buf2,
 668                                      ptr-buf2.buf + strlen(":refs/remotes/"),
 669                                      strlen(rename.old), rename.new,
 670                                      strlen(rename.new));
 671                } else
 672                        warning(_("Not updating non-default fetch refspec\n"
 673                                  "\t%s\n"
 674                                  "\tPlease update the configuration manually if necessary."),
 675                                buf2.buf);
 676
 677                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 678                        return error(_("Could not append '%s'"), buf.buf);
 679        }
 680
 681        read_branches();
 682        for (i = 0; i < branch_list.nr; i++) {
 683                struct string_list_item *item = branch_list.items + i;
 684                struct branch_info *info = item->util;
 685                if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 686                        strbuf_reset(&buf);
 687                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 688                        if (git_config_set(buf.buf, rename.new)) {
 689                                return error(_("Could not set '%s'"), buf.buf);
 690                        }
 691                }
 692        }
 693
 694        if (!refspec_updated)
 695                return 0;
 696
 697        /*
 698         * First remove symrefs, then rename the rest, finally create
 699         * the new symrefs.
 700         */
 701        for_each_ref(read_remote_branches, &rename);
 702        for (i = 0; i < remote_branches.nr; i++) {
 703                struct string_list_item *item = remote_branches.items + i;
 704                int flag = 0;
 705                unsigned char sha1[20];
 706
 707                read_ref_full(item->string, RESOLVE_REF_READING, sha1, &flag);
 708                if (!(flag & REF_ISSYMREF))
 709                        continue;
 710                if (delete_ref(item->string, NULL, REF_NODEREF))
 711                        die(_("deleting '%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_addf(&buf2, "remote: renamed %s to %s",
 724                                item->string, buf.buf);
 725                if (rename_ref(item->string, buf.buf, buf2.buf))
 726                        die(_("renaming '%s' failed"), item->string);
 727        }
 728        for (i = 0; i < remote_branches.nr; i++) {
 729                struct string_list_item *item = remote_branches.items + i;
 730
 731                if (!item->util)
 732                        continue;
 733                strbuf_reset(&buf);
 734                strbuf_addstr(&buf, item->string);
 735                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 736                                rename.new, strlen(rename.new));
 737                strbuf_reset(&buf2);
 738                strbuf_addstr(&buf2, item->util);
 739                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 740                                rename.new, strlen(rename.new));
 741                strbuf_reset(&buf3);
 742                strbuf_addf(&buf3, "remote: renamed %s to %s",
 743                                item->string, buf.buf);
 744                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 745                        die(_("creating '%s' failed"), buf.buf);
 746        }
 747        return 0;
 748}
 749
 750static int remove_branches(struct string_list *branches)
 751{
 752        struct strbuf err = STRBUF_INIT;
 753        const char **branch_names;
 754        int i, result = 0;
 755
 756        branch_names = xmalloc(branches->nr * sizeof(*branch_names));
 757        for (i = 0; i < branches->nr; i++)
 758                branch_names[i] = branches->items[i].string;
 759        if (repack_without_refs(branch_names, branches->nr, &err))
 760                result |= error("%s", err.buf);
 761        strbuf_release(&err);
 762        free(branch_names);
 763
 764        for (i = 0; i < branches->nr; i++) {
 765                struct string_list_item *item = branches->items + i;
 766                const char *refname = item->string;
 767
 768                if (delete_ref(refname, NULL, 0))
 769                        result |= error(_("Could not remove branch %s"), refname);
 770        }
 771
 772        return result;
 773}
 774
 775static int rm(int argc, const char **argv)
 776{
 777        struct option options[] = {
 778                OPT_END()
 779        };
 780        struct remote *remote;
 781        struct strbuf buf = STRBUF_INIT;
 782        struct known_remotes known_remotes = { NULL, NULL };
 783        struct string_list branches = STRING_LIST_INIT_DUP;
 784        struct string_list skipped = STRING_LIST_INIT_DUP;
 785        struct branches_for_remote cb_data;
 786        int i, result;
 787
 788        memset(&cb_data, 0, sizeof(cb_data));
 789        cb_data.branches = &branches;
 790        cb_data.skipped = &skipped;
 791        cb_data.keep = &known_remotes;
 792
 793        if (argc != 2)
 794                usage_with_options(builtin_remote_rm_usage, options);
 795
 796        remote = remote_get(argv[1]);
 797        if (!remote)
 798                die(_("No such remote: %s"), argv[1]);
 799
 800        known_remotes.to_delete = remote;
 801        for_each_remote(add_known_remote, &known_remotes);
 802
 803        read_branches();
 804        for (i = 0; i < branch_list.nr; i++) {
 805                struct string_list_item *item = branch_list.items + i;
 806                struct branch_info *info = item->util;
 807                if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 808                        const char *keys[] = { "remote", "merge", NULL }, **k;
 809                        for (k = keys; *k; k++) {
 810                                strbuf_reset(&buf);
 811                                strbuf_addf(&buf, "branch.%s.%s",
 812                                                item->string, *k);
 813                                if (git_config_set(buf.buf, NULL)) {
 814                                        strbuf_release(&buf);
 815                                        return -1;
 816                                }
 817                        }
 818                }
 819        }
 820
 821        /*
 822         * We cannot just pass a function to for_each_ref() which deletes
 823         * the branches one by one, since for_each_ref() relies on cached
 824         * refs, which are invalidated when deleting a branch.
 825         */
 826        cb_data.remote = remote;
 827        result = for_each_ref(add_branch_for_removal, &cb_data);
 828        strbuf_release(&buf);
 829
 830        if (!result)
 831                result = remove_branches(&branches);
 832        string_list_clear(&branches, 1);
 833
 834        if (skipped.nr) {
 835                fprintf_ln(stderr,
 836                           Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 837                              "to delete it, use:",
 838                              "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 839                              "to delete them, use:",
 840                              skipped.nr));
 841                for (i = 0; i < skipped.nr; i++)
 842                        fprintf(stderr, "  git branch -d %s\n",
 843                                skipped.items[i].string);
 844        }
 845        string_list_clear(&skipped, 0);
 846
 847        if (!result) {
 848                strbuf_addf(&buf, "remote.%s", remote->name);
 849                if (git_config_rename_section(buf.buf, NULL) < 1)
 850                        return error(_("Could not remove config section '%s'"), buf.buf);
 851        }
 852
 853        return result;
 854}
 855
 856static void clear_push_info(void *util, const char *string)
 857{
 858        struct push_info *info = util;
 859        free(info->dest);
 860        free(info);
 861}
 862
 863static void free_remote_ref_states(struct ref_states *states)
 864{
 865        string_list_clear(&states->new, 0);
 866        string_list_clear(&states->stale, 1);
 867        string_list_clear(&states->tracked, 0);
 868        string_list_clear(&states->heads, 0);
 869        string_list_clear_func(&states->push, clear_push_info);
 870}
 871
 872static int append_ref_to_tracked_list(const char *refname,
 873        const unsigned char *sha1, int flags, void *cb_data)
 874{
 875        struct ref_states *states = cb_data;
 876        struct refspec refspec;
 877
 878        if (flags & REF_ISSYMREF)
 879                return 0;
 880
 881        memset(&refspec, 0, sizeof(refspec));
 882        refspec.dst = (char *)refname;
 883        if (!remote_find_tracking(states->remote, &refspec))
 884                string_list_append(&states->tracked, abbrev_branch(refspec.src));
 885
 886        return 0;
 887}
 888
 889static int get_remote_ref_states(const char *name,
 890                                 struct ref_states *states,
 891                                 int query)
 892{
 893        struct transport *transport;
 894        const struct ref *remote_refs;
 895
 896        states->remote = remote_get(name);
 897        if (!states->remote)
 898                return error(_("No such remote: %s"), name);
 899
 900        read_branches();
 901
 902        if (query) {
 903                transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 904                        states->remote->url[0] : NULL);
 905                remote_refs = transport_get_remote_refs(transport);
 906                transport_disconnect(transport);
 907
 908                states->queried = 1;
 909                if (query & GET_REF_STATES)
 910                        get_ref_states(remote_refs, states);
 911                if (query & GET_HEAD_NAMES)
 912                        get_head_names(remote_refs, states);
 913                if (query & GET_PUSH_REF_STATES)
 914                        get_push_ref_states(remote_refs, states);
 915        } else {
 916                for_each_ref(append_ref_to_tracked_list, states);
 917                sort_string_list(&states->tracked);
 918                get_push_ref_states_noquery(states);
 919        }
 920
 921        return 0;
 922}
 923
 924struct show_info {
 925        struct string_list *list;
 926        struct ref_states *states;
 927        int width, width2;
 928        int any_rebase;
 929};
 930
 931static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 932{
 933        struct show_info *info = cb_data;
 934        int n = strlen(item->string);
 935        if (n > info->width)
 936                info->width = n;
 937        string_list_insert(info->list, item->string);
 938        return 0;
 939}
 940
 941static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 942{
 943        struct show_info *info = cb_data;
 944        struct ref_states *states = info->states;
 945        const char *name = item->string;
 946
 947        if (states->queried) {
 948                const char *fmt = "%s";
 949                const char *arg = "";
 950                if (string_list_has_string(&states->new, name)) {
 951                        fmt = _(" new (next fetch will store in remotes/%s)");
 952                        arg = states->remote->name;
 953                } else if (string_list_has_string(&states->tracked, name))
 954                        arg = _(" tracked");
 955                else if (string_list_has_string(&states->stale, name))
 956                        arg = _(" stale (use 'git remote prune' to remove)");
 957                else
 958                        arg = _(" ???");
 959                printf("    %-*s", info->width, name);
 960                printf(fmt, arg);
 961                printf("\n");
 962        } else
 963                printf("    %s\n", name);
 964
 965        return 0;
 966}
 967
 968static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 969{
 970        struct show_info *show_info = cb_data;
 971        struct ref_states *states = show_info->states;
 972        struct branch_info *branch_info = branch_item->util;
 973        struct string_list_item *item;
 974        int n;
 975
 976        if (!branch_info->merge.nr || !branch_info->remote_name ||
 977            strcmp(states->remote->name, branch_info->remote_name))
 978                return 0;
 979        if ((n = strlen(branch_item->string)) > show_info->width)
 980                show_info->width = n;
 981        if (branch_info->rebase)
 982                show_info->any_rebase = 1;
 983
 984        item = string_list_insert(show_info->list, branch_item->string);
 985        item->util = branch_info;
 986
 987        return 0;
 988}
 989
 990static int show_local_info_item(struct string_list_item *item, void *cb_data)
 991{
 992        struct show_info *show_info = cb_data;
 993        struct branch_info *branch_info = item->util;
 994        struct string_list *merge = &branch_info->merge;
 995        const char *also;
 996        int i;
 997
 998        if (branch_info->rebase && branch_info->merge.nr > 1) {
 999                error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
1000                        item->string);
1001                return 0;
1002        }
1003
1004        printf("    %-*s ", show_info->width, item->string);
1005        if (branch_info->rebase) {
1006                printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1007                return 0;
1008        } else if (show_info->any_rebase) {
1009                printf_ln(_(" merges with remote %s"), merge->items[0].string);
1010                also = _("    and with remote");
1011        } else {
1012                printf_ln(_("merges with remote %s"), merge->items[0].string);
1013                also = _("   and with remote");
1014        }
1015        for (i = 1; i < merge->nr; i++)
1016                printf("    %-*s %s %s\n", show_info->width, "", also,
1017                       merge->items[i].string);
1018
1019        return 0;
1020}
1021
1022static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1023{
1024        struct show_info *show_info = cb_data;
1025        struct push_info *push_info = push_item->util;
1026        struct string_list_item *item;
1027        int n;
1028        if ((n = strlen(push_item->string)) > show_info->width)
1029                show_info->width = n;
1030        if ((n = strlen(push_info->dest)) > show_info->width2)
1031                show_info->width2 = n;
1032        item = string_list_append(show_info->list, push_item->string);
1033        item->util = push_item->util;
1034        return 0;
1035}
1036
1037/*
1038 * Sorting comparison for a string list that has push_info
1039 * structs in its util field
1040 */
1041static int cmp_string_with_push(const void *va, const void *vb)
1042{
1043        const struct string_list_item *a = va;
1044        const struct string_list_item *b = vb;
1045        const struct push_info *a_push = a->util;
1046        const struct push_info *b_push = b->util;
1047        int cmp = strcmp(a->string, b->string);
1048        return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1049}
1050
1051static int show_push_info_item(struct string_list_item *item, void *cb_data)
1052{
1053        struct show_info *show_info = cb_data;
1054        struct push_info *push_info = item->util;
1055        const char *src = item->string, *status = NULL;
1056
1057        switch (push_info->status) {
1058        case PUSH_STATUS_CREATE:
1059                status = _("create");
1060                break;
1061        case PUSH_STATUS_DELETE:
1062                status = _("delete");
1063                src = _("(none)");
1064                break;
1065        case PUSH_STATUS_UPTODATE:
1066                status = _("up to date");
1067                break;
1068        case PUSH_STATUS_FASTFORWARD:
1069                status = _("fast-forwardable");
1070                break;
1071        case PUSH_STATUS_OUTOFDATE:
1072                status = _("local out of date");
1073                break;
1074        case PUSH_STATUS_NOTQUERIED:
1075                break;
1076        }
1077        if (status) {
1078                if (push_info->forced)
1079                        printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1080                               show_info->width2, push_info->dest, status);
1081                else
1082                        printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1083                               show_info->width2, push_info->dest, status);
1084        } else {
1085                if (push_info->forced)
1086                        printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1087                               push_info->dest);
1088                else
1089                        printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1090                               push_info->dest);
1091        }
1092        return 0;
1093}
1094
1095static int get_one_entry(struct remote *remote, void *priv)
1096{
1097        struct string_list *list = priv;
1098        struct strbuf url_buf = STRBUF_INIT;
1099        const char **url;
1100        int i, url_nr;
1101
1102        if (remote->url_nr > 0) {
1103                strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1104                string_list_append(list, remote->name)->util =
1105                                strbuf_detach(&url_buf, NULL);
1106        } else
1107                string_list_append(list, remote->name)->util = NULL;
1108        if (remote->pushurl_nr) {
1109                url = remote->pushurl;
1110                url_nr = remote->pushurl_nr;
1111        } else {
1112                url = remote->url;
1113                url_nr = remote->url_nr;
1114        }
1115        for (i = 0; i < url_nr; i++)
1116        {
1117                strbuf_addf(&url_buf, "%s (push)", url[i]);
1118                string_list_append(list, remote->name)->util =
1119                                strbuf_detach(&url_buf, NULL);
1120        }
1121
1122        return 0;
1123}
1124
1125static int show_all(void)
1126{
1127        struct string_list list = STRING_LIST_INIT_NODUP;
1128        int result;
1129
1130        list.strdup_strings = 1;
1131        result = for_each_remote(get_one_entry, &list);
1132
1133        if (!result) {
1134                int i;
1135
1136                sort_string_list(&list);
1137                for (i = 0; i < list.nr; i++) {
1138                        struct string_list_item *item = list.items + i;
1139                        if (verbose)
1140                                printf("%s\t%s\n", item->string,
1141                                        item->util ? (const char *)item->util : "");
1142                        else {
1143                                if (i && !strcmp((item - 1)->string, item->string))
1144                                        continue;
1145                                printf("%s\n", item->string);
1146                        }
1147                }
1148        }
1149        string_list_clear(&list, 1);
1150        return result;
1151}
1152
1153static int show(int argc, const char **argv)
1154{
1155        int no_query = 0, result = 0, query_flag = 0;
1156        struct option options[] = {
1157                OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1158                OPT_END()
1159        };
1160        struct ref_states states;
1161        struct string_list info_list = STRING_LIST_INIT_NODUP;
1162        struct show_info info;
1163
1164        argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1165                             0);
1166
1167        if (argc < 1)
1168                return show_all();
1169
1170        if (!no_query)
1171                query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1172
1173        memset(&states, 0, sizeof(states));
1174        memset(&info, 0, sizeof(info));
1175        info.states = &states;
1176        info.list = &info_list;
1177        for (; argc; argc--, argv++) {
1178                int i;
1179                const char **url;
1180                int url_nr;
1181
1182                get_remote_ref_states(*argv, &states, query_flag);
1183
1184                printf_ln(_("* remote %s"), *argv);
1185                printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1186                       states.remote->url[0] : _("(no URL)"));
1187                if (states.remote->pushurl_nr) {
1188                        url = states.remote->pushurl;
1189                        url_nr = states.remote->pushurl_nr;
1190                } else {
1191                        url = states.remote->url;
1192                        url_nr = states.remote->url_nr;
1193                }
1194                for (i = 0; i < url_nr; i++)
1195                        printf_ln(_("  Push  URL: %s"), url[i]);
1196                if (!i)
1197                        printf_ln(_("  Push  URL: %s"), "(no URL)");
1198                if (no_query)
1199                        printf_ln(_("  HEAD branch: %s"), "(not queried)");
1200                else if (!states.heads.nr)
1201                        printf_ln(_("  HEAD branch: %s"), "(unknown)");
1202                else if (states.heads.nr == 1)
1203                        printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1204                else {
1205                        printf(_("  HEAD branch (remote HEAD is ambiguous,"
1206                                 " may be one of the following):\n"));
1207                        for (i = 0; i < states.heads.nr; i++)
1208                                printf("    %s\n", states.heads.items[i].string);
1209                }
1210
1211                /* remote branch info */
1212                info.width = 0;
1213                for_each_string_list(&states.new, add_remote_to_show_info, &info);
1214                for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1215                for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1216                if (info.list->nr)
1217                        printf_ln(Q_("  Remote branch:%s",
1218                                     "  Remote branches:%s",
1219                                     info.list->nr),
1220                                  no_query ? _(" (status not queried)") : "");
1221                for_each_string_list(info.list, show_remote_info_item, &info);
1222                string_list_clear(info.list, 0);
1223
1224                /* git pull info */
1225                info.width = 0;
1226                info.any_rebase = 0;
1227                for_each_string_list(&branch_list, add_local_to_show_info, &info);
1228                if (info.list->nr)
1229                        printf_ln(Q_("  Local branch configured for 'git pull':",
1230                                     "  Local branches configured for 'git pull':",
1231                                     info.list->nr));
1232                for_each_string_list(info.list, show_local_info_item, &info);
1233                string_list_clear(info.list, 0);
1234
1235                /* git push info */
1236                if (states.remote->mirror)
1237                        printf_ln(_("  Local refs will be mirrored by 'git push'"));
1238
1239                info.width = info.width2 = 0;
1240                for_each_string_list(&states.push, add_push_to_show_info, &info);
1241                qsort(info.list->items, info.list->nr,
1242                        sizeof(*info.list->items), cmp_string_with_push);
1243                if (info.list->nr)
1244                        printf_ln(Q_("  Local ref configured for 'git push'%s:",
1245                                     "  Local refs configured for 'git push'%s:",
1246                                     info.list->nr),
1247                                  no_query ? _(" (status not queried)") : "");
1248                for_each_string_list(info.list, show_push_info_item, &info);
1249                string_list_clear(info.list, 0);
1250
1251                free_remote_ref_states(&states);
1252        }
1253
1254        return result;
1255}
1256
1257static int set_head(int argc, const char **argv)
1258{
1259        int i, opt_a = 0, opt_d = 0, result = 0;
1260        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1261        char *head_name = NULL;
1262
1263        struct option options[] = {
1264                OPT_BOOL('a', "auto", &opt_a,
1265                         N_("set refs/remotes/<name>/HEAD according to remote")),
1266                OPT_BOOL('d', "delete", &opt_d,
1267                         N_("delete refs/remotes/<name>/HEAD")),
1268                OPT_END()
1269        };
1270        argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1271                             0);
1272        if (argc)
1273                strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1274
1275        if (!opt_a && !opt_d && argc == 2) {
1276                head_name = xstrdup(argv[1]);
1277        } else if (opt_a && !opt_d && argc == 1) {
1278                struct ref_states states;
1279                memset(&states, 0, sizeof(states));
1280                get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1281                if (!states.heads.nr)
1282                        result |= error(_("Cannot determine remote HEAD"));
1283                else if (states.heads.nr > 1) {
1284                        result |= error(_("Multiple remote HEAD branches. "
1285                                          "Please choose one explicitly with:"));
1286                        for (i = 0; i < states.heads.nr; i++)
1287                                fprintf(stderr, "  git remote set-head %s %s\n",
1288                                        argv[0], states.heads.items[i].string);
1289                } else
1290                        head_name = xstrdup(states.heads.items[0].string);
1291                free_remote_ref_states(&states);
1292        } else if (opt_d && !opt_a && argc == 1) {
1293                if (delete_ref(buf.buf, NULL, REF_NODEREF))
1294                        result |= error(_("Could not delete %s"), buf.buf);
1295        } else
1296                usage_with_options(builtin_remote_sethead_usage, options);
1297
1298        if (head_name) {
1299                strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1300                /* make sure it's valid */
1301                if (!ref_exists(buf2.buf))
1302                        result |= error(_("Not a valid ref: %s"), buf2.buf);
1303                else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1304                        result |= error(_("Could not setup %s"), buf.buf);
1305                if (opt_a)
1306                        printf("%s/HEAD set to %s\n", argv[0], head_name);
1307                free(head_name);
1308        }
1309
1310        strbuf_release(&buf);
1311        strbuf_release(&buf2);
1312        return result;
1313}
1314
1315static int prune_remote(const char *remote, int dry_run)
1316{
1317        int result = 0, i;
1318        struct ref_states states;
1319        struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1320        const char **delete_refs;
1321        const char *dangling_msg = dry_run
1322                ? _(" %s will become dangling!")
1323                : _(" %s has become dangling!");
1324
1325        memset(&states, 0, sizeof(states));
1326        get_remote_ref_states(remote, &states, GET_REF_STATES);
1327
1328        if (states.stale.nr) {
1329                printf_ln(_("Pruning %s"), remote);
1330                printf_ln(_("URL: %s"),
1331                       states.remote->url_nr
1332                       ? states.remote->url[0]
1333                       : _("(no URL)"));
1334
1335                delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1336                for (i = 0; i < states.stale.nr; i++)
1337                        delete_refs[i] = states.stale.items[i].util;
1338                if (!dry_run) {
1339                        struct strbuf err = STRBUF_INIT;
1340                        if (repack_without_refs(delete_refs, states.stale.nr,
1341                                                &err))
1342                                result |= error("%s", err.buf);
1343                        strbuf_release(&err);
1344                }
1345                free(delete_refs);
1346        }
1347
1348        for (i = 0; i < states.stale.nr; i++) {
1349                const char *refname = states.stale.items[i].util;
1350
1351                string_list_insert(&delete_refs_list, refname);
1352
1353                if (!dry_run)
1354                        result |= delete_ref(refname, NULL, 0);
1355
1356                if (dry_run)
1357                        printf_ln(_(" * [would prune] %s"),
1358                               abbrev_ref(refname, "refs/remotes/"));
1359                else
1360                        printf_ln(_(" * [pruned] %s"),
1361                               abbrev_ref(refname, "refs/remotes/"));
1362        }
1363
1364        warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1365        string_list_clear(&delete_refs_list, 0);
1366
1367        free_remote_ref_states(&states);
1368        return result;
1369}
1370
1371static int prune(int argc, const char **argv)
1372{
1373        int dry_run = 0, result = 0;
1374        struct option options[] = {
1375                OPT__DRY_RUN(&dry_run, N_("dry run")),
1376                OPT_END()
1377        };
1378
1379        argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1380                             0);
1381
1382        if (argc < 1)
1383                usage_with_options(builtin_remote_prune_usage, options);
1384
1385        for (; argc; argc--, argv++)
1386                result |= prune_remote(*argv, dry_run);
1387
1388        return result;
1389}
1390
1391static int get_remote_default(const char *key, const char *value, void *priv)
1392{
1393        if (strcmp(key, "remotes.default") == 0) {
1394                int *found = priv;
1395                *found = 1;
1396        }
1397        return 0;
1398}
1399
1400static int update(int argc, const char **argv)
1401{
1402        int i, prune = -1;
1403        struct option options[] = {
1404                OPT_BOOL('p', "prune", &prune,
1405                         N_("prune remotes after fetching")),
1406                OPT_END()
1407        };
1408        struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1409        int default_defined = 0;
1410        int retval;
1411
1412        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1413                             PARSE_OPT_KEEP_ARGV0);
1414
1415        argv_array_push(&fetch_argv, "fetch");
1416
1417        if (prune != -1)
1418                argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1419        if (verbose)
1420                argv_array_push(&fetch_argv, "-v");
1421        argv_array_push(&fetch_argv, "--multiple");
1422        if (argc < 2)
1423                argv_array_push(&fetch_argv, "default");
1424        for (i = 1; i < argc; i++)
1425                argv_array_push(&fetch_argv, argv[i]);
1426
1427        if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1428                git_config(get_remote_default, &default_defined);
1429                if (!default_defined) {
1430                        argv_array_pop(&fetch_argv);
1431                        argv_array_push(&fetch_argv, "--all");
1432                }
1433        }
1434
1435        retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1436        argv_array_clear(&fetch_argv);
1437        return retval;
1438}
1439
1440static int remove_all_fetch_refspecs(const char *remote, const char *key)
1441{
1442        return git_config_set_multivar(key, NULL, NULL, 1);
1443}
1444
1445static int add_branches(struct remote *remote, const char **branches,
1446                        const char *key)
1447{
1448        const char *remotename = remote->name;
1449        int mirror = remote->mirror;
1450        struct strbuf refspec = STRBUF_INIT;
1451
1452        for (; *branches; branches++)
1453                if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1454                        strbuf_release(&refspec);
1455                        return 1;
1456                }
1457
1458        strbuf_release(&refspec);
1459        return 0;
1460}
1461
1462static int set_remote_branches(const char *remotename, const char **branches,
1463                                int add_mode)
1464{
1465        struct strbuf key = STRBUF_INIT;
1466        struct remote *remote;
1467
1468        strbuf_addf(&key, "remote.%s.fetch", remotename);
1469
1470        if (!remote_is_configured(remotename))
1471                die(_("No such remote '%s'"), remotename);
1472        remote = remote_get(remotename);
1473
1474        if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1475                strbuf_release(&key);
1476                return 1;
1477        }
1478        if (add_branches(remote, branches, key.buf)) {
1479                strbuf_release(&key);
1480                return 1;
1481        }
1482
1483        strbuf_release(&key);
1484        return 0;
1485}
1486
1487static int set_branches(int argc, const char **argv)
1488{
1489        int add_mode = 0;
1490        struct option options[] = {
1491                OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1492                OPT_END()
1493        };
1494
1495        argc = parse_options(argc, argv, NULL, options,
1496                             builtin_remote_setbranches_usage, 0);
1497        if (argc == 0) {
1498                error(_("no remote specified"));
1499                usage_with_options(builtin_remote_setbranches_usage, options);
1500        }
1501        argv[argc] = NULL;
1502
1503        return set_remote_branches(argv[0], argv + 1, add_mode);
1504}
1505
1506static int set_url(int argc, const char **argv)
1507{
1508        int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1509        int matches = 0, negative_matches = 0;
1510        const char *remotename = NULL;
1511        const char *newurl = NULL;
1512        const char *oldurl = NULL;
1513        struct remote *remote;
1514        regex_t old_regex;
1515        const char **urlset;
1516        int urlset_nr;
1517        struct strbuf name_buf = STRBUF_INIT;
1518        struct option options[] = {
1519                OPT_BOOL('\0', "push", &push_mode,
1520                         N_("manipulate push URLs")),
1521                OPT_BOOL('\0', "add", &add_mode,
1522                         N_("add URL")),
1523                OPT_BOOL('\0', "delete", &delete_mode,
1524                            N_("delete URLs")),
1525                OPT_END()
1526        };
1527        argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1528                             PARSE_OPT_KEEP_ARGV0);
1529
1530        if (add_mode && delete_mode)
1531                die(_("--add --delete doesn't make sense"));
1532
1533        if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1534                usage_with_options(builtin_remote_seturl_usage, options);
1535
1536        remotename = argv[1];
1537        newurl = argv[2];
1538        if (argc > 3)
1539                oldurl = argv[3];
1540
1541        if (delete_mode)
1542                oldurl = newurl;
1543
1544        if (!remote_is_configured(remotename))
1545                die(_("No such remote '%s'"), remotename);
1546        remote = remote_get(remotename);
1547
1548        if (push_mode) {
1549                strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1550                urlset = remote->pushurl;
1551                urlset_nr = remote->pushurl_nr;
1552        } else {
1553                strbuf_addf(&name_buf, "remote.%s.url", remotename);
1554                urlset = remote->url;
1555                urlset_nr = remote->url_nr;
1556        }
1557
1558        /* Special cases that add new entry. */
1559        if ((!oldurl && !delete_mode) || add_mode) {
1560                if (add_mode)
1561                        git_config_set_multivar(name_buf.buf, newurl,
1562                                "^$", 0);
1563                else
1564                        git_config_set(name_buf.buf, newurl);
1565                strbuf_release(&name_buf);
1566                return 0;
1567        }
1568
1569        /* Old URL specified. Demand that one matches. */
1570        if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1571                die(_("Invalid old URL pattern: %s"), oldurl);
1572
1573        for (i = 0; i < urlset_nr; i++)
1574                if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1575                        matches++;
1576                else
1577                        negative_matches++;
1578        if (!delete_mode && !matches)
1579                die(_("No such URL found: %s"), oldurl);
1580        if (delete_mode && !negative_matches && !push_mode)
1581                die(_("Will not delete all non-push URLs"));
1582
1583        regfree(&old_regex);
1584
1585        if (!delete_mode)
1586                git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1587        else
1588                git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1589        return 0;
1590}
1591
1592int cmd_remote(int argc, const char **argv, const char *prefix)
1593{
1594        struct option options[] = {
1595                OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1596                OPT_END()
1597        };
1598        int result;
1599
1600        argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1601                PARSE_OPT_STOP_AT_NON_OPTION);
1602
1603        if (argc < 1)
1604                result = show_all();
1605        else if (!strcmp(argv[0], "add"))
1606                result = add(argc, argv);
1607        else if (!strcmp(argv[0], "rename"))
1608                result = mv(argc, argv);
1609        else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1610                result = rm(argc, argv);
1611        else if (!strcmp(argv[0], "set-head"))
1612                result = set_head(argc, argv);
1613        else if (!strcmp(argv[0], "set-branches"))
1614                result = set_branches(argc, argv);
1615        else if (!strcmp(argv[0], "set-url"))
1616                result = set_url(argc, argv);
1617        else if (!strcmp(argv[0], "show"))
1618                result = show(argc, argv);
1619        else if (!strcmp(argv[0], "prune"))
1620                result = prune(argc, argv);
1621        else if (!strcmp(argv[0], "update"))
1622                result = update(argc, argv);
1623        else {
1624                error(_("Unknown subcommand: %s"), argv[0]);
1625                usage_with_options(builtin_remote_usage, options);
1626        }
1627
1628        return result ? 1 : 0;
1629}