ab39fea2b701a8a1530a2b9737862df4be1f719c
   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 ||
 184                        (strcmp(name, remote->url[0]) &&
 185                                strcmp(url, remote->url[0])) ||
 186                        remote->fetch_refspec_nr))
 187                die(_("remote %s already exists."), name);
 188
 189        strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 190        if (!valid_fetch_refspec(buf2.buf))
 191                die(_("'%s' is not a valid remote name"), name);
 192
 193        strbuf_addf(&buf, "remote.%s.url", name);
 194        if (git_config_set(buf.buf, url))
 195                return 1;
 196
 197        if (!mirror || mirror & MIRROR_FETCH) {
 198                strbuf_reset(&buf);
 199                strbuf_addf(&buf, "remote.%s.fetch", name);
 200                if (track.nr == 0)
 201                        string_list_append(&track, "*");
 202                for (i = 0; i < track.nr; i++) {
 203                        if (add_branch(buf.buf, track.items[i].string,
 204                                       name, mirror, &buf2))
 205                                return 1;
 206                }
 207        }
 208
 209        if (mirror & MIRROR_PUSH) {
 210                strbuf_reset(&buf);
 211                strbuf_addf(&buf, "remote.%s.mirror", name);
 212                if (git_config_set(buf.buf, "true"))
 213                        return 1;
 214        }
 215
 216        if (fetch_tags != TAGS_DEFAULT) {
 217                strbuf_reset(&buf);
 218                strbuf_addf(&buf, "remote.%s.tagopt", name);
 219                if (git_config_set(buf.buf,
 220                        fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 221                        return 1;
 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        int rebase;
 249};
 250
 251static struct string_list branch_list;
 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 = 1;
 309                }
 310        }
 311        return 0;
 312}
 313
 314static void read_branches(void)
 315{
 316        if (branch_list.nr)
 317                return;
 318        git_config(config_read_branches, NULL);
 319}
 320
 321struct ref_states {
 322        struct remote *remote;
 323        struct string_list new, stale, tracked, heads, push;
 324        int queried;
 325};
 326
 327static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 328{
 329        struct ref *fetch_map = NULL, **tail = &fetch_map;
 330        struct ref *ref, *stale_refs;
 331        int i;
 332
 333        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 334                if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 335                        die(_("Could not get fetch map for refspec %s"),
 336                                states->remote->fetch_refspec[i]);
 337
 338        states->new.strdup_strings = 1;
 339        states->tracked.strdup_strings = 1;
 340        states->stale.strdup_strings = 1;
 341        for (ref = fetch_map; ref; ref = ref->next) {
 342                if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 343                        string_list_append(&states->new, abbrev_branch(ref->name));
 344                else
 345                        string_list_append(&states->tracked, abbrev_branch(ref->name));
 346        }
 347        stale_refs = get_stale_heads(states->remote->fetch,
 348                                     states->remote->fetch_refspec_nr, fetch_map);
 349        for (ref = stale_refs; ref; ref = ref->next) {
 350                struct string_list_item *item =
 351                        string_list_append(&states->stale, abbrev_branch(ref->name));
 352                item->util = xstrdup(ref->name);
 353        }
 354        free_refs(stale_refs);
 355        free_refs(fetch_map);
 356
 357        string_list_sort(&states->new);
 358        string_list_sort(&states->tracked);
 359        string_list_sort(&states->stale);
 360
 361        return 0;
 362}
 363
 364struct push_info {
 365        char *dest;
 366        int forced;
 367        enum {
 368                PUSH_STATUS_CREATE = 0,
 369                PUSH_STATUS_DELETE,
 370                PUSH_STATUS_UPTODATE,
 371                PUSH_STATUS_FASTFORWARD,
 372                PUSH_STATUS_OUTOFDATE,
 373                PUSH_STATUS_NOTQUERIED
 374        } status;
 375};
 376
 377static int get_push_ref_states(const struct ref *remote_refs,
 378        struct ref_states *states)
 379{
 380        struct remote *remote = states->remote;
 381        struct ref *ref, *local_refs, *push_map;
 382        if (remote->mirror)
 383                return 0;
 384
 385        local_refs = get_local_heads();
 386        push_map = copy_ref_list(remote_refs);
 387
 388        match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 389                        remote->push_refspec, MATCH_REFS_NONE);
 390
 391        states->push.strdup_strings = 1;
 392        for (ref = push_map; ref; ref = ref->next) {
 393                struct string_list_item *item;
 394                struct push_info *info;
 395
 396                if (!ref->peer_ref)
 397                        continue;
 398                hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 399
 400                item = string_list_append(&states->push,
 401                                          abbrev_branch(ref->peer_ref->name));
 402                item->util = xcalloc(1, sizeof(struct push_info));
 403                info = item->util;
 404                info->forced = ref->force;
 405                info->dest = xstrdup(abbrev_branch(ref->name));
 406
 407                if (is_null_sha1(ref->new_sha1)) {
 408                        info->status = PUSH_STATUS_DELETE;
 409                } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 410                        info->status = PUSH_STATUS_UPTODATE;
 411                else if (is_null_sha1(ref->old_sha1))
 412                        info->status = PUSH_STATUS_CREATE;
 413                else if (has_sha1_file(ref->old_sha1) &&
 414                         ref_newer(ref->new_sha1, ref->old_sha1))
 415                        info->status = PUSH_STATUS_FASTFORWARD;
 416                else
 417                        info->status = PUSH_STATUS_OUTOFDATE;
 418        }
 419        free_refs(local_refs);
 420        free_refs(push_map);
 421        return 0;
 422}
 423
 424static int get_push_ref_states_noquery(struct ref_states *states)
 425{
 426        int i;
 427        struct remote *remote = states->remote;
 428        struct string_list_item *item;
 429        struct push_info *info;
 430
 431        if (remote->mirror)
 432                return 0;
 433
 434        states->push.strdup_strings = 1;
 435        if (!remote->push_refspec_nr) {
 436                item = string_list_append(&states->push, _("(matching)"));
 437                info = item->util = xcalloc(1, sizeof(struct push_info));
 438                info->status = PUSH_STATUS_NOTQUERIED;
 439                info->dest = xstrdup(item->string);
 440        }
 441        for (i = 0; i < remote->push_refspec_nr; i++) {
 442                struct refspec *spec = remote->push + i;
 443                if (spec->matching)
 444                        item = string_list_append(&states->push, _("(matching)"));
 445                else if (strlen(spec->src))
 446                        item = string_list_append(&states->push, spec->src);
 447                else
 448                        item = string_list_append(&states->push, _("(delete)"));
 449
 450                info = item->util = xcalloc(1, sizeof(struct push_info));
 451                info->forced = spec->force;
 452                info->status = PUSH_STATUS_NOTQUERIED;
 453                info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 454        }
 455        return 0;
 456}
 457
 458static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 459{
 460        struct ref *ref, *matches;
 461        struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 462        struct refspec refspec;
 463
 464        refspec.force = 0;
 465        refspec.pattern = 1;
 466        refspec.src = refspec.dst = "refs/heads/*";
 467        states->heads.strdup_strings = 1;
 468        get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 469        matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 470                                    fetch_map, 1);
 471        for (ref = matches; ref; ref = ref->next)
 472                string_list_append(&states->heads, abbrev_branch(ref->name));
 473
 474        free_refs(fetch_map);
 475        free_refs(matches);
 476
 477        return 0;
 478}
 479
 480struct known_remote {
 481        struct known_remote *next;
 482        struct remote *remote;
 483};
 484
 485struct known_remotes {
 486        struct remote *to_delete;
 487        struct known_remote *list;
 488};
 489
 490static int add_known_remote(struct remote *remote, void *cb_data)
 491{
 492        struct known_remotes *all = cb_data;
 493        struct known_remote *r;
 494
 495        if (!strcmp(all->to_delete->name, remote->name))
 496                return 0;
 497
 498        r = xmalloc(sizeof(*r));
 499        r->remote = remote;
 500        r->next = all->list;
 501        all->list = r;
 502        return 0;
 503}
 504
 505struct branches_for_remote {
 506        struct remote *remote;
 507        struct string_list *branches, *skipped;
 508        struct known_remotes *keep;
 509};
 510
 511static int add_branch_for_removal(const char *refname,
 512        const struct object_id *oid, int flags, void *cb_data)
 513{
 514        struct branches_for_remote *branches = cb_data;
 515        struct refspec refspec;
 516        struct known_remote *kr;
 517
 518        memset(&refspec, 0, sizeof(refspec));
 519        refspec.dst = (char *)refname;
 520        if (remote_find_tracking(branches->remote, &refspec))
 521                return 0;
 522
 523        /* don't delete a branch if another remote also uses it */
 524        for (kr = branches->keep->list; kr; kr = kr->next) {
 525                memset(&refspec, 0, sizeof(refspec));
 526                refspec.dst = (char *)refname;
 527                if (!remote_find_tracking(kr->remote, &refspec))
 528                        return 0;
 529        }
 530
 531        /* don't delete non-remote-tracking refs */
 532        if (!starts_with(refname, "refs/remotes/")) {
 533                /* advise user how to delete local branches */
 534                if (starts_with(refname, "refs/heads/"))
 535                        string_list_append(branches->skipped,
 536                                           abbrev_branch(refname));
 537                /* silently skip over other non-remote refs */
 538                return 0;
 539        }
 540
 541        /* make sure that symrefs are deleted */
 542        if (flags & REF_ISSYMREF)
 543                return unlink(git_path("%s", refname));
 544
 545        string_list_append(branches->branches, refname);
 546
 547        return 0;
 548}
 549
 550struct rename_info {
 551        const char *old;
 552        const char *new;
 553        struct string_list *remote_branches;
 554};
 555
 556static int read_remote_branches(const char *refname,
 557        const unsigned char *sha1, int flags, void *cb_data)
 558{
 559        struct rename_info *rename = cb_data;
 560        struct strbuf buf = STRBUF_INIT;
 561        struct string_list_item *item;
 562        int flag;
 563        unsigned char orig_sha1[20];
 564        const char *symref;
 565
 566        strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 567        if (starts_with(refname, buf.buf)) {
 568                item = string_list_append(rename->remote_branches, xstrdup(refname));
 569                symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 570                                            orig_sha1, &flag);
 571                if (flag & REF_ISSYMREF)
 572                        item->util = xstrdup(symref);
 573                else
 574                        item->util = NULL;
 575        }
 576
 577        return 0;
 578}
 579
 580static int migrate_file(struct remote *remote)
 581{
 582        struct strbuf buf = STRBUF_INIT;
 583        int i;
 584        const char *path = NULL;
 585
 586        strbuf_addf(&buf, "remote.%s.url", remote->name);
 587        for (i = 0; i < remote->url_nr; i++)
 588                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 589                        return error(_("Could not append '%s' to '%s'"),
 590                                        remote->url[i], buf.buf);
 591        strbuf_reset(&buf);
 592        strbuf_addf(&buf, "remote.%s.push", remote->name);
 593        for (i = 0; i < remote->push_refspec_nr; i++)
 594                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 595                        return error(_("Could not append '%s' to '%s'"),
 596                                        remote->push_refspec[i], buf.buf);
 597        strbuf_reset(&buf);
 598        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 599        for (i = 0; i < remote->fetch_refspec_nr; i++)
 600                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 601                        return error(_("Could not append '%s' to '%s'"),
 602                                        remote->fetch_refspec[i], buf.buf);
 603        if (remote->origin == REMOTE_REMOTES)
 604                path = git_path("remotes/%s", remote->name);
 605        else if (remote->origin == REMOTE_BRANCHES)
 606                path = git_path("branches/%s", remote->name);
 607        if (path)
 608                unlink_or_warn(path);
 609        return 0;
 610}
 611
 612static int mv(int argc, const char **argv)
 613{
 614        struct option options[] = {
 615                OPT_END()
 616        };
 617        struct remote *oldremote, *newremote;
 618        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 619                old_remote_context = STRBUF_INIT;
 620        struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 621        struct rename_info rename;
 622        int i, refspec_updated = 0;
 623        struct each_ref_fn_sha1_adapter wrapped_read_remote_branches =
 624                {read_remote_branches, &rename};
 625
 626        if (argc != 3)
 627                usage_with_options(builtin_remote_rename_usage, options);
 628
 629        rename.old = argv[1];
 630        rename.new = argv[2];
 631        rename.remote_branches = &remote_branches;
 632
 633        oldremote = remote_get(rename.old);
 634        if (!oldremote)
 635                die(_("No such remote: %s"), rename.old);
 636
 637        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 638                return migrate_file(oldremote);
 639
 640        newremote = remote_get(rename.new);
 641        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 642                die(_("remote %s already exists."), rename.new);
 643
 644        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 645        if (!valid_fetch_refspec(buf.buf))
 646                die(_("'%s' is not a valid remote name"), rename.new);
 647
 648        strbuf_reset(&buf);
 649        strbuf_addf(&buf, "remote.%s", rename.old);
 650        strbuf_addf(&buf2, "remote.%s", rename.new);
 651        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 652                return error(_("Could not rename config section '%s' to '%s'"),
 653                                buf.buf, buf2.buf);
 654
 655        strbuf_reset(&buf);
 656        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 657        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 658                return error(_("Could not remove config section '%s'"), buf.buf);
 659        strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 660        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 661                char *ptr;
 662
 663                strbuf_reset(&buf2);
 664                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 665                ptr = strstr(buf2.buf, old_remote_context.buf);
 666                if (ptr) {
 667                        refspec_updated = 1;
 668                        strbuf_splice(&buf2,
 669                                      ptr-buf2.buf + strlen(":refs/remotes/"),
 670                                      strlen(rename.old), rename.new,
 671                                      strlen(rename.new));
 672                } else
 673                        warning(_("Not updating non-default fetch refspec\n"
 674                                  "\t%s\n"
 675                                  "\tPlease update the configuration manually if necessary."),
 676                                buf2.buf);
 677
 678                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 679                        return error(_("Could not append '%s'"), buf.buf);
 680        }
 681
 682        read_branches();
 683        for (i = 0; i < branch_list.nr; i++) {
 684                struct string_list_item *item = branch_list.items + i;
 685                struct branch_info *info = item->util;
 686                if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 687                        strbuf_reset(&buf);
 688                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 689                        if (git_config_set(buf.buf, rename.new)) {
 690                                return error(_("Could not set '%s'"), buf.buf);
 691                        }
 692                }
 693        }
 694
 695        if (!refspec_updated)
 696                return 0;
 697
 698        /*
 699         * First remove symrefs, then rename the rest, finally create
 700         * the new symrefs.
 701         */
 702        for_each_ref(each_ref_fn_adapter, &wrapped_read_remote_branches);
 703        for (i = 0; i < remote_branches.nr; i++) {
 704                struct string_list_item *item = remote_branches.items + i;
 705                int flag = 0;
 706                unsigned char sha1[20];
 707
 708                read_ref_full(item->string, RESOLVE_REF_READING, sha1, &flag);
 709                if (!(flag & REF_ISSYMREF))
 710                        continue;
 711                if (delete_ref(item->string, NULL, REF_NODEREF))
 712                        die(_("deleting '%s' failed"), item->string);
 713        }
 714        for (i = 0; i < remote_branches.nr; i++) {
 715                struct string_list_item *item = remote_branches.items + i;
 716
 717                if (item->util)
 718                        continue;
 719                strbuf_reset(&buf);
 720                strbuf_addstr(&buf, item->string);
 721                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 722                                rename.new, strlen(rename.new));
 723                strbuf_reset(&buf2);
 724                strbuf_addf(&buf2, "remote: renamed %s to %s",
 725                                item->string, buf.buf);
 726                if (rename_ref(item->string, buf.buf, buf2.buf))
 727                        die(_("renaming '%s' failed"), item->string);
 728        }
 729        for (i = 0; i < remote_branches.nr; i++) {
 730                struct string_list_item *item = remote_branches.items + i;
 731
 732                if (!item->util)
 733                        continue;
 734                strbuf_reset(&buf);
 735                strbuf_addstr(&buf, item->string);
 736                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 737                                rename.new, strlen(rename.new));
 738                strbuf_reset(&buf2);
 739                strbuf_addstr(&buf2, item->util);
 740                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 741                                rename.new, strlen(rename.new));
 742                strbuf_reset(&buf3);
 743                strbuf_addf(&buf3, "remote: renamed %s to %s",
 744                                item->string, buf.buf);
 745                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 746                        die(_("creating '%s' failed"), buf.buf);
 747        }
 748        return 0;
 749}
 750
 751static int remove_branches(struct string_list *branches)
 752{
 753        struct strbuf err = STRBUF_INIT;
 754        int i, result = 0;
 755
 756        if (repack_without_refs(branches, &err))
 757                result |= error("%s", err.buf);
 758        strbuf_release(&err);
 759
 760        for (i = 0; i < branches->nr; i++) {
 761                struct string_list_item *item = branches->items + i;
 762                const char *refname = item->string;
 763
 764                if (delete_ref(refname, NULL, 0))
 765                        result |= error(_("Could not remove branch %s"), refname);
 766        }
 767
 768        return result;
 769}
 770
 771static int rm(int argc, const char **argv)
 772{
 773        struct option options[] = {
 774                OPT_END()
 775        };
 776        struct remote *remote;
 777        struct strbuf buf = STRBUF_INIT;
 778        struct known_remotes known_remotes = { NULL, NULL };
 779        struct string_list branches = STRING_LIST_INIT_DUP;
 780        struct string_list skipped = STRING_LIST_INIT_DUP;
 781        struct branches_for_remote cb_data;
 782        int i, result;
 783
 784        memset(&cb_data, 0, sizeof(cb_data));
 785        cb_data.branches = &branches;
 786        cb_data.skipped = &skipped;
 787        cb_data.keep = &known_remotes;
 788
 789        if (argc != 2)
 790                usage_with_options(builtin_remote_rm_usage, options);
 791
 792        remote = remote_get(argv[1]);
 793        if (!remote)
 794                die(_("No such remote: %s"), argv[1]);
 795
 796        known_remotes.to_delete = remote;
 797        for_each_remote(add_known_remote, &known_remotes);
 798
 799        read_branches();
 800        for (i = 0; i < branch_list.nr; i++) {
 801                struct string_list_item *item = branch_list.items + i;
 802                struct branch_info *info = item->util;
 803                if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 804                        const char *keys[] = { "remote", "merge", NULL }, **k;
 805                        for (k = keys; *k; k++) {
 806                                strbuf_reset(&buf);
 807                                strbuf_addf(&buf, "branch.%s.%s",
 808                                                item->string, *k);
 809                                if (git_config_set(buf.buf, NULL)) {
 810                                        strbuf_release(&buf);
 811                                        return -1;
 812                                }
 813                        }
 814                }
 815        }
 816
 817        /*
 818         * We cannot just pass a function to for_each_ref() which deletes
 819         * the branches one by one, since for_each_ref() relies on cached
 820         * refs, which are invalidated when deleting a branch.
 821         */
 822        cb_data.remote = remote;
 823        result = for_each_ref(add_branch_for_removal, &cb_data);
 824        strbuf_release(&buf);
 825
 826        if (!result)
 827                result = remove_branches(&branches);
 828        string_list_clear(&branches, 0);
 829
 830        if (skipped.nr) {
 831                fprintf_ln(stderr,
 832                           Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 833                              "to delete it, use:",
 834                              "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 835                              "to delete them, use:",
 836                              skipped.nr));
 837                for (i = 0; i < skipped.nr; i++)
 838                        fprintf(stderr, "  git branch -d %s\n",
 839                                skipped.items[i].string);
 840        }
 841        string_list_clear(&skipped, 0);
 842
 843        if (!result) {
 844                strbuf_addf(&buf, "remote.%s", remote->name);
 845                if (git_config_rename_section(buf.buf, NULL) < 1)
 846                        return error(_("Could not remove config section '%s'"), buf.buf);
 847        }
 848
 849        return result;
 850}
 851
 852static void clear_push_info(void *util, const char *string)
 853{
 854        struct push_info *info = util;
 855        free(info->dest);
 856        free(info);
 857}
 858
 859static void free_remote_ref_states(struct ref_states *states)
 860{
 861        string_list_clear(&states->new, 0);
 862        string_list_clear(&states->stale, 1);
 863        string_list_clear(&states->tracked, 0);
 864        string_list_clear(&states->heads, 0);
 865        string_list_clear_func(&states->push, clear_push_info);
 866}
 867
 868static int append_ref_to_tracked_list(const char *refname,
 869        const unsigned char *sha1, int flags, void *cb_data)
 870{
 871        struct ref_states *states = cb_data;
 872        struct refspec refspec;
 873
 874        if (flags & REF_ISSYMREF)
 875                return 0;
 876
 877        memset(&refspec, 0, sizeof(refspec));
 878        refspec.dst = (char *)refname;
 879        if (!remote_find_tracking(states->remote, &refspec))
 880                string_list_append(&states->tracked, abbrev_branch(refspec.src));
 881
 882        return 0;
 883}
 884
 885static int get_remote_ref_states(const char *name,
 886                                 struct ref_states *states,
 887                                 int query)
 888{
 889        struct transport *transport;
 890        const struct ref *remote_refs;
 891
 892        states->remote = remote_get(name);
 893        if (!states->remote)
 894                return error(_("No such remote: %s"), name);
 895
 896        read_branches();
 897
 898        if (query) {
 899                transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 900                        states->remote->url[0] : NULL);
 901                remote_refs = transport_get_remote_refs(transport);
 902                transport_disconnect(transport);
 903
 904                states->queried = 1;
 905                if (query & GET_REF_STATES)
 906                        get_ref_states(remote_refs, states);
 907                if (query & GET_HEAD_NAMES)
 908                        get_head_names(remote_refs, states);
 909                if (query & GET_PUSH_REF_STATES)
 910                        get_push_ref_states(remote_refs, states);
 911        } else {
 912                struct each_ref_fn_sha1_adapter wrapped_append_ref_to_tracked_list =
 913                        {append_ref_to_tracked_list, states};
 914
 915                for_each_ref(each_ref_fn_adapter, &wrapped_append_ref_to_tracked_list);
 916                string_list_sort(&states->tracked);
 917                get_push_ref_states_noquery(states);
 918        }
 919
 920        return 0;
 921}
 922
 923struct show_info {
 924        struct string_list *list;
 925        struct ref_states *states;
 926        int width, width2;
 927        int any_rebase;
 928};
 929
 930static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 931{
 932        struct show_info *info = cb_data;
 933        int n = strlen(item->string);
 934        if (n > info->width)
 935                info->width = n;
 936        string_list_insert(info->list, item->string);
 937        return 0;
 938}
 939
 940static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 941{
 942        struct show_info *info = cb_data;
 943        struct ref_states *states = info->states;
 944        const char *name = item->string;
 945
 946        if (states->queried) {
 947                const char *fmt = "%s";
 948                const char *arg = "";
 949                if (string_list_has_string(&states->new, name)) {
 950                        fmt = _(" new (next fetch will store in remotes/%s)");
 951                        arg = states->remote->name;
 952                } else if (string_list_has_string(&states->tracked, name))
 953                        arg = _(" tracked");
 954                else if (string_list_has_string(&states->stale, name))
 955                        arg = _(" stale (use 'git remote prune' to remove)");
 956                else
 957                        arg = _(" ???");
 958                printf("    %-*s", info->width, name);
 959                printf(fmt, arg);
 960                printf("\n");
 961        } else
 962                printf("    %s\n", name);
 963
 964        return 0;
 965}
 966
 967static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 968{
 969        struct show_info *show_info = cb_data;
 970        struct ref_states *states = show_info->states;
 971        struct branch_info *branch_info = branch_item->util;
 972        struct string_list_item *item;
 973        int n;
 974
 975        if (!branch_info->merge.nr || !branch_info->remote_name ||
 976            strcmp(states->remote->name, branch_info->remote_name))
 977                return 0;
 978        if ((n = strlen(branch_item->string)) > show_info->width)
 979                show_info->width = n;
 980        if (branch_info->rebase)
 981                show_info->any_rebase = 1;
 982
 983        item = string_list_insert(show_info->list, branch_item->string);
 984        item->util = branch_info;
 985
 986        return 0;
 987}
 988
 989static int show_local_info_item(struct string_list_item *item, void *cb_data)
 990{
 991        struct show_info *show_info = cb_data;
 992        struct branch_info *branch_info = item->util;
 993        struct string_list *merge = &branch_info->merge;
 994        const char *also;
 995        int i;
 996
 997        if (branch_info->rebase && branch_info->merge.nr > 1) {
 998                error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 999                        item->string);
1000                return 0;
1001        }
1002
1003        printf("    %-*s ", show_info->width, item->string);
1004        if (branch_info->rebase) {
1005                printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1006                return 0;
1007        } else if (show_info->any_rebase) {
1008                printf_ln(_(" merges with remote %s"), merge->items[0].string);
1009                also = _("    and with remote");
1010        } else {
1011                printf_ln(_("merges with remote %s"), merge->items[0].string);
1012                also = _("   and with remote");
1013        }
1014        for (i = 1; i < merge->nr; i++)
1015                printf("    %-*s %s %s\n", show_info->width, "", also,
1016                       merge->items[i].string);
1017
1018        return 0;
1019}
1020
1021static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1022{
1023        struct show_info *show_info = cb_data;
1024        struct push_info *push_info = push_item->util;
1025        struct string_list_item *item;
1026        int n;
1027        if ((n = strlen(push_item->string)) > show_info->width)
1028                show_info->width = n;
1029        if ((n = strlen(push_info->dest)) > show_info->width2)
1030                show_info->width2 = n;
1031        item = string_list_append(show_info->list, push_item->string);
1032        item->util = push_item->util;
1033        return 0;
1034}
1035
1036/*
1037 * Sorting comparison for a string list that has push_info
1038 * structs in its util field
1039 */
1040static int cmp_string_with_push(const void *va, const void *vb)
1041{
1042        const struct string_list_item *a = va;
1043        const struct string_list_item *b = vb;
1044        const struct push_info *a_push = a->util;
1045        const struct push_info *b_push = b->util;
1046        int cmp = strcmp(a->string, b->string);
1047        return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1048}
1049
1050static int show_push_info_item(struct string_list_item *item, void *cb_data)
1051{
1052        struct show_info *show_info = cb_data;
1053        struct push_info *push_info = item->util;
1054        const char *src = item->string, *status = NULL;
1055
1056        switch (push_info->status) {
1057        case PUSH_STATUS_CREATE:
1058                status = _("create");
1059                break;
1060        case PUSH_STATUS_DELETE:
1061                status = _("delete");
1062                src = _("(none)");
1063                break;
1064        case PUSH_STATUS_UPTODATE:
1065                status = _("up to date");
1066                break;
1067        case PUSH_STATUS_FASTFORWARD:
1068                status = _("fast-forwardable");
1069                break;
1070        case PUSH_STATUS_OUTOFDATE:
1071                status = _("local out of date");
1072                break;
1073        case PUSH_STATUS_NOTQUERIED:
1074                break;
1075        }
1076        if (status) {
1077                if (push_info->forced)
1078                        printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1079                               show_info->width2, push_info->dest, status);
1080                else
1081                        printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1082                               show_info->width2, push_info->dest, status);
1083        } else {
1084                if (push_info->forced)
1085                        printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1086                               push_info->dest);
1087                else
1088                        printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1089                               push_info->dest);
1090        }
1091        return 0;
1092}
1093
1094static int get_one_entry(struct remote *remote, void *priv)
1095{
1096        struct string_list *list = priv;
1097        struct strbuf url_buf = STRBUF_INIT;
1098        const char **url;
1099        int i, url_nr;
1100
1101        if (remote->url_nr > 0) {
1102                strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1103                string_list_append(list, remote->name)->util =
1104                                strbuf_detach(&url_buf, NULL);
1105        } else
1106                string_list_append(list, remote->name)->util = NULL;
1107        if (remote->pushurl_nr) {
1108                url = remote->pushurl;
1109                url_nr = remote->pushurl_nr;
1110        } else {
1111                url = remote->url;
1112                url_nr = remote->url_nr;
1113        }
1114        for (i = 0; i < url_nr; i++)
1115        {
1116                strbuf_addf(&url_buf, "%s (push)", url[i]);
1117                string_list_append(list, remote->name)->util =
1118                                strbuf_detach(&url_buf, NULL);
1119        }
1120
1121        return 0;
1122}
1123
1124static int show_all(void)
1125{
1126        struct string_list list = STRING_LIST_INIT_NODUP;
1127        int result;
1128
1129        list.strdup_strings = 1;
1130        result = for_each_remote(get_one_entry, &list);
1131
1132        if (!result) {
1133                int i;
1134
1135                string_list_sort(&list);
1136                for (i = 0; i < list.nr; i++) {
1137                        struct string_list_item *item = list.items + i;
1138                        if (verbose)
1139                                printf("%s\t%s\n", item->string,
1140                                        item->util ? (const char *)item->util : "");
1141                        else {
1142                                if (i && !strcmp((item - 1)->string, item->string))
1143                                        continue;
1144                                printf("%s\n", item->string);
1145                        }
1146                }
1147        }
1148        string_list_clear(&list, 1);
1149        return result;
1150}
1151
1152static int show(int argc, const char **argv)
1153{
1154        int no_query = 0, result = 0, query_flag = 0;
1155        struct option options[] = {
1156                OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1157                OPT_END()
1158        };
1159        struct ref_states states;
1160        struct string_list info_list = STRING_LIST_INIT_NODUP;
1161        struct show_info info;
1162
1163        argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1164                             0);
1165
1166        if (argc < 1)
1167                return show_all();
1168
1169        if (!no_query)
1170                query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1171
1172        memset(&states, 0, sizeof(states));
1173        memset(&info, 0, sizeof(info));
1174        info.states = &states;
1175        info.list = &info_list;
1176        for (; argc; argc--, argv++) {
1177                int i;
1178                const char **url;
1179                int url_nr;
1180
1181                get_remote_ref_states(*argv, &states, query_flag);
1182
1183                printf_ln(_("* remote %s"), *argv);
1184                printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1185                       states.remote->url[0] : _("(no URL)"));
1186                if (states.remote->pushurl_nr) {
1187                        url = states.remote->pushurl;
1188                        url_nr = states.remote->pushurl_nr;
1189                } else {
1190                        url = states.remote->url;
1191                        url_nr = states.remote->url_nr;
1192                }
1193                for (i = 0; i < url_nr; i++)
1194                        printf_ln(_("  Push  URL: %s"), url[i]);
1195                if (!i)
1196                        printf_ln(_("  Push  URL: %s"), "(no URL)");
1197                if (no_query)
1198                        printf_ln(_("  HEAD branch: %s"), "(not queried)");
1199                else if (!states.heads.nr)
1200                        printf_ln(_("  HEAD branch: %s"), "(unknown)");
1201                else if (states.heads.nr == 1)
1202                        printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1203                else {
1204                        printf(_("  HEAD branch (remote HEAD is ambiguous,"
1205                                 " may be one of the following):\n"));
1206                        for (i = 0; i < states.heads.nr; i++)
1207                                printf("    %s\n", states.heads.items[i].string);
1208                }
1209
1210                /* remote branch info */
1211                info.width = 0;
1212                for_each_string_list(&states.new, add_remote_to_show_info, &info);
1213                for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1214                for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1215                if (info.list->nr)
1216                        printf_ln(Q_("  Remote branch:%s",
1217                                     "  Remote branches:%s",
1218                                     info.list->nr),
1219                                  no_query ? _(" (status not queried)") : "");
1220                for_each_string_list(info.list, show_remote_info_item, &info);
1221                string_list_clear(info.list, 0);
1222
1223                /* git pull info */
1224                info.width = 0;
1225                info.any_rebase = 0;
1226                for_each_string_list(&branch_list, add_local_to_show_info, &info);
1227                if (info.list->nr)
1228                        printf_ln(Q_("  Local branch configured for 'git pull':",
1229                                     "  Local branches configured for 'git pull':",
1230                                     info.list->nr));
1231                for_each_string_list(info.list, show_local_info_item, &info);
1232                string_list_clear(info.list, 0);
1233
1234                /* git push info */
1235                if (states.remote->mirror)
1236                        printf_ln(_("  Local refs will be mirrored by 'git push'"));
1237
1238                info.width = info.width2 = 0;
1239                for_each_string_list(&states.push, add_push_to_show_info, &info);
1240                qsort(info.list->items, info.list->nr,
1241                        sizeof(*info.list->items), cmp_string_with_push);
1242                if (info.list->nr)
1243                        printf_ln(Q_("  Local ref configured for 'git push'%s:",
1244                                     "  Local refs configured for 'git push'%s:",
1245                                     info.list->nr),
1246                                  no_query ? _(" (status not queried)") : "");
1247                for_each_string_list(info.list, show_push_info_item, &info);
1248                string_list_clear(info.list, 0);
1249
1250                free_remote_ref_states(&states);
1251        }
1252
1253        return result;
1254}
1255
1256static int set_head(int argc, const char **argv)
1257{
1258        int i, opt_a = 0, opt_d = 0, result = 0;
1259        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1260        char *head_name = NULL;
1261
1262        struct option options[] = {
1263                OPT_BOOL('a', "auto", &opt_a,
1264                         N_("set refs/remotes/<name>/HEAD according to remote")),
1265                OPT_BOOL('d', "delete", &opt_d,
1266                         N_("delete refs/remotes/<name>/HEAD")),
1267                OPT_END()
1268        };
1269        argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1270                             0);
1271        if (argc)
1272                strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1273
1274        if (!opt_a && !opt_d && argc == 2) {
1275                head_name = xstrdup(argv[1]);
1276        } else if (opt_a && !opt_d && argc == 1) {
1277                struct ref_states states;
1278                memset(&states, 0, sizeof(states));
1279                get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1280                if (!states.heads.nr)
1281                        result |= error(_("Cannot determine remote HEAD"));
1282                else if (states.heads.nr > 1) {
1283                        result |= error(_("Multiple remote HEAD branches. "
1284                                          "Please choose one explicitly with:"));
1285                        for (i = 0; i < states.heads.nr; i++)
1286                                fprintf(stderr, "  git remote set-head %s %s\n",
1287                                        argv[0], states.heads.items[i].string);
1288                } else
1289                        head_name = xstrdup(states.heads.items[0].string);
1290                free_remote_ref_states(&states);
1291        } else if (opt_d && !opt_a && argc == 1) {
1292                if (delete_ref(buf.buf, NULL, REF_NODEREF))
1293                        result |= error(_("Could not delete %s"), buf.buf);
1294        } else
1295                usage_with_options(builtin_remote_sethead_usage, options);
1296
1297        if (head_name) {
1298                strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1299                /* make sure it's valid */
1300                if (!ref_exists(buf2.buf))
1301                        result |= error(_("Not a valid ref: %s"), buf2.buf);
1302                else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1303                        result |= error(_("Could not setup %s"), buf.buf);
1304                if (opt_a)
1305                        printf("%s/HEAD set to %s\n", argv[0], head_name);
1306                free(head_name);
1307        }
1308
1309        strbuf_release(&buf);
1310        strbuf_release(&buf2);
1311        return result;
1312}
1313
1314static int prune_remote(const char *remote, int dry_run)
1315{
1316        int result = 0;
1317        struct ref_states states;
1318        struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1319        struct string_list_item *item;
1320        const char *dangling_msg = dry_run
1321                ? _(" %s will become dangling!")
1322                : _(" %s has become dangling!");
1323
1324        memset(&states, 0, sizeof(states));
1325        get_remote_ref_states(remote, &states, GET_REF_STATES);
1326
1327        if (!states.stale.nr) {
1328                free_remote_ref_states(&states);
1329                return 0;
1330        }
1331
1332        printf_ln(_("Pruning %s"), remote);
1333        printf_ln(_("URL: %s"),
1334                  states.remote->url_nr
1335                  ? states.remote->url[0]
1336                  : _("(no URL)"));
1337
1338        for_each_string_list_item(item, &states.stale)
1339                string_list_append(&refs_to_prune, item->util);
1340        string_list_sort(&refs_to_prune);
1341
1342        if (!dry_run) {
1343                struct strbuf err = STRBUF_INIT;
1344                if (repack_without_refs(&refs_to_prune, &err))
1345                        result |= error("%s", err.buf);
1346                strbuf_release(&err);
1347        }
1348
1349        for_each_string_list_item(item, &states.stale) {
1350                const char *refname = item->util;
1351
1352                if (!dry_run)
1353                        result |= delete_ref(refname, NULL, 0);
1354
1355                if (dry_run)
1356                        printf_ln(_(" * [would prune] %s"),
1357                               abbrev_ref(refname, "refs/remotes/"));
1358                else
1359                        printf_ln(_(" * [pruned] %s"),
1360                               abbrev_ref(refname, "refs/remotes/"));
1361        }
1362
1363        warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1364
1365        string_list_clear(&refs_to_prune, 0);
1366        free_remote_ref_states(&states);
1367        return result;
1368}
1369
1370static int prune(int argc, const char **argv)
1371{
1372        int dry_run = 0, result = 0;
1373        struct option options[] = {
1374                OPT__DRY_RUN(&dry_run, N_("dry run")),
1375                OPT_END()
1376        };
1377
1378        argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1379                             0);
1380
1381        if (argc < 1)
1382                usage_with_options(builtin_remote_prune_usage, options);
1383
1384        for (; argc; argc--, argv++)
1385                result |= prune_remote(*argv, dry_run);
1386
1387        return result;
1388}
1389
1390static int get_remote_default(const char *key, const char *value, void *priv)
1391{
1392        if (strcmp(key, "remotes.default") == 0) {
1393                int *found = priv;
1394                *found = 1;
1395        }
1396        return 0;
1397}
1398
1399static int update(int argc, const char **argv)
1400{
1401        int i, prune = -1;
1402        struct option options[] = {
1403                OPT_BOOL('p', "prune", &prune,
1404                         N_("prune remotes after fetching")),
1405                OPT_END()
1406        };
1407        struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1408        int default_defined = 0;
1409        int retval;
1410
1411        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1412                             PARSE_OPT_KEEP_ARGV0);
1413
1414        argv_array_push(&fetch_argv, "fetch");
1415
1416        if (prune != -1)
1417                argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1418        if (verbose)
1419                argv_array_push(&fetch_argv, "-v");
1420        argv_array_push(&fetch_argv, "--multiple");
1421        if (argc < 2)
1422                argv_array_push(&fetch_argv, "default");
1423        for (i = 1; i < argc; i++)
1424                argv_array_push(&fetch_argv, argv[i]);
1425
1426        if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1427                git_config(get_remote_default, &default_defined);
1428                if (!default_defined) {
1429                        argv_array_pop(&fetch_argv);
1430                        argv_array_push(&fetch_argv, "--all");
1431                }
1432        }
1433
1434        retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1435        argv_array_clear(&fetch_argv);
1436        return retval;
1437}
1438
1439static int remove_all_fetch_refspecs(const char *remote, const char *key)
1440{
1441        return git_config_set_multivar(key, NULL, NULL, 1);
1442}
1443
1444static int add_branches(struct remote *remote, const char **branches,
1445                        const char *key)
1446{
1447        const char *remotename = remote->name;
1448        int mirror = remote->mirror;
1449        struct strbuf refspec = STRBUF_INIT;
1450
1451        for (; *branches; branches++)
1452                if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1453                        strbuf_release(&refspec);
1454                        return 1;
1455                }
1456
1457        strbuf_release(&refspec);
1458        return 0;
1459}
1460
1461static int set_remote_branches(const char *remotename, const char **branches,
1462                                int add_mode)
1463{
1464        struct strbuf key = STRBUF_INIT;
1465        struct remote *remote;
1466
1467        strbuf_addf(&key, "remote.%s.fetch", remotename);
1468
1469        if (!remote_is_configured(remotename))
1470                die(_("No such remote '%s'"), remotename);
1471        remote = remote_get(remotename);
1472
1473        if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1474                strbuf_release(&key);
1475                return 1;
1476        }
1477        if (add_branches(remote, branches, key.buf)) {
1478                strbuf_release(&key);
1479                return 1;
1480        }
1481
1482        strbuf_release(&key);
1483        return 0;
1484}
1485
1486static int set_branches(int argc, const char **argv)
1487{
1488        int add_mode = 0;
1489        struct option options[] = {
1490                OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1491                OPT_END()
1492        };
1493
1494        argc = parse_options(argc, argv, NULL, options,
1495                             builtin_remote_setbranches_usage, 0);
1496        if (argc == 0) {
1497                error(_("no remote specified"));
1498                usage_with_options(builtin_remote_setbranches_usage, options);
1499        }
1500        argv[argc] = NULL;
1501
1502        return set_remote_branches(argv[0], argv + 1, add_mode);
1503}
1504
1505static int set_url(int argc, const char **argv)
1506{
1507        int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1508        int matches = 0, negative_matches = 0;
1509        const char *remotename = NULL;
1510        const char *newurl = NULL;
1511        const char *oldurl = NULL;
1512        struct remote *remote;
1513        regex_t old_regex;
1514        const char **urlset;
1515        int urlset_nr;
1516        struct strbuf name_buf = STRBUF_INIT;
1517        struct option options[] = {
1518                OPT_BOOL('\0', "push", &push_mode,
1519                         N_("manipulate push URLs")),
1520                OPT_BOOL('\0', "add", &add_mode,
1521                         N_("add URL")),
1522                OPT_BOOL('\0', "delete", &delete_mode,
1523                            N_("delete URLs")),
1524                OPT_END()
1525        };
1526        argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1527                             PARSE_OPT_KEEP_ARGV0);
1528
1529        if (add_mode && delete_mode)
1530                die(_("--add --delete doesn't make sense"));
1531
1532        if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1533                usage_with_options(builtin_remote_seturl_usage, options);
1534
1535        remotename = argv[1];
1536        newurl = argv[2];
1537        if (argc > 3)
1538                oldurl = argv[3];
1539
1540        if (delete_mode)
1541                oldurl = newurl;
1542
1543        if (!remote_is_configured(remotename))
1544                die(_("No such remote '%s'"), remotename);
1545        remote = remote_get(remotename);
1546
1547        if (push_mode) {
1548                strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1549                urlset = remote->pushurl;
1550                urlset_nr = remote->pushurl_nr;
1551        } else {
1552                strbuf_addf(&name_buf, "remote.%s.url", remotename);
1553                urlset = remote->url;
1554                urlset_nr = remote->url_nr;
1555        }
1556
1557        /* Special cases that add new entry. */
1558        if ((!oldurl && !delete_mode) || add_mode) {
1559                if (add_mode)
1560                        git_config_set_multivar(name_buf.buf, newurl,
1561                                "^$", 0);
1562                else
1563                        git_config_set(name_buf.buf, newurl);
1564                strbuf_release(&name_buf);
1565                return 0;
1566        }
1567
1568        /* Old URL specified. Demand that one matches. */
1569        if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1570                die(_("Invalid old URL pattern: %s"), oldurl);
1571
1572        for (i = 0; i < urlset_nr; i++)
1573                if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1574                        matches++;
1575                else
1576                        negative_matches++;
1577        if (!delete_mode && !matches)
1578                die(_("No such URL found: %s"), oldurl);
1579        if (delete_mode && !negative_matches && !push_mode)
1580                die(_("Will not delete all non-push URLs"));
1581
1582        regfree(&old_regex);
1583
1584        if (!delete_mode)
1585                git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1586        else
1587                git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1588        return 0;
1589}
1590
1591int cmd_remote(int argc, const char **argv, const char *prefix)
1592{
1593        struct option options[] = {
1594                OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1595                OPT_END()
1596        };
1597        int result;
1598
1599        argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1600                PARSE_OPT_STOP_AT_NON_OPTION);
1601
1602        if (argc < 1)
1603                result = show_all();
1604        else if (!strcmp(argv[0], "add"))
1605                result = add(argc, argv);
1606        else if (!strcmp(argv[0], "rename"))
1607                result = mv(argc, argv);
1608        else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1609                result = rm(argc, argv);
1610        else if (!strcmp(argv[0], "set-head"))
1611                result = set_head(argc, argv);
1612        else if (!strcmp(argv[0], "set-branches"))
1613                result = set_branches(argc, argv);
1614        else if (!strcmp(argv[0], "set-url"))
1615                result = set_url(argc, argv);
1616        else if (!strcmp(argv[0], "show"))
1617                result = show(argc, argv);
1618        else if (!strcmp(argv[0], "prune"))
1619                result = prune(argc, argv);
1620        else if (!strcmp(argv[0], "update"))
1621                result = update(argc, argv);
1622        else {
1623                error(_("Unknown subcommand: %s"), argv[0]);
1624                usage_with_options(builtin_remote_usage, options);
1625        }
1626
1627        return result ? 1 : 0;
1628}