builtin / remote.con commit prune-packed: fix minor memory leak (1cc2c77)
   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, orig_sha1, 1, &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        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
 624        if (argc != 3)
 625                usage_with_options(builtin_remote_rename_usage, options);
 626
 627        rename.old = argv[1];
 628        rename.new = argv[2];
 629        rename.remote_branches = &remote_branches;
 630
 631        oldremote = remote_get(rename.old);
 632        if (!oldremote)
 633                die(_("No such remote: %s"), rename.old);
 634
 635        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 636                return migrate_file(oldremote);
 637
 638        newremote = remote_get(rename.new);
 639        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 640                die(_("remote %s already exists."), rename.new);
 641
 642        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 643        if (!valid_fetch_refspec(buf.buf))
 644                die(_("'%s' is not a valid remote name"), rename.new);
 645
 646        strbuf_reset(&buf);
 647        strbuf_addf(&buf, "remote.%s", rename.old);
 648        strbuf_addf(&buf2, "remote.%s", rename.new);
 649        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 650                return error(_("Could not rename config section '%s' to '%s'"),
 651                                buf.buf, buf2.buf);
 652
 653        strbuf_reset(&buf);
 654        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 655        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 656                return error(_("Could not remove config section '%s'"), buf.buf);
 657        strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 658        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 659                char *ptr;
 660
 661                strbuf_reset(&buf2);
 662                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 663                ptr = strstr(buf2.buf, old_remote_context.buf);
 664                if (ptr) {
 665                        refspec_updated = 1;
 666                        strbuf_splice(&buf2,
 667                                      ptr-buf2.buf + strlen(":refs/remotes/"),
 668                                      strlen(rename.old), rename.new,
 669                                      strlen(rename.new));
 670                } else
 671                        warning(_("Not updating non-default fetch refspec\n"
 672                                  "\t%s\n"
 673                                  "\tPlease update the configuration manually if necessary."),
 674                                buf2.buf);
 675
 676                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 677                        return error(_("Could not append '%s'"), buf.buf);
 678        }
 679
 680        read_branches();
 681        for (i = 0; i < branch_list.nr; i++) {
 682                struct string_list_item *item = branch_list.items + i;
 683                struct branch_info *info = item->util;
 684                if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 685                        strbuf_reset(&buf);
 686                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 687                        if (git_config_set(buf.buf, rename.new)) {
 688                                return error(_("Could not set '%s'"), buf.buf);
 689                        }
 690                }
 691        }
 692
 693        if (!refspec_updated)
 694                return 0;
 695
 696        /*
 697         * First remove symrefs, then rename the rest, finally create
 698         * the new symrefs.
 699         */
 700        for_each_ref(read_remote_branches, &rename);
 701        for (i = 0; i < remote_branches.nr; i++) {
 702                struct string_list_item *item = remote_branches.items + i;
 703                int flag = 0;
 704                unsigned char sha1[20];
 705
 706                read_ref_full(item->string, sha1, 1, &flag);
 707                if (!(flag & REF_ISSYMREF))
 708                        continue;
 709                if (delete_ref(item->string, NULL, REF_NODEREF))
 710                        die(_("deleting '%s' failed"), item->string);
 711        }
 712        for (i = 0; i < remote_branches.nr; i++) {
 713                struct string_list_item *item = remote_branches.items + i;
 714
 715                if (item->util)
 716                        continue;
 717                strbuf_reset(&buf);
 718                strbuf_addstr(&buf, item->string);
 719                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 720                                rename.new, strlen(rename.new));
 721                strbuf_reset(&buf2);
 722                strbuf_addf(&buf2, "remote: renamed %s to %s",
 723                                item->string, buf.buf);
 724                if (rename_ref(item->string, buf.buf, buf2.buf))
 725                        die(_("renaming '%s' failed"), item->string);
 726        }
 727        for (i = 0; i < remote_branches.nr; i++) {
 728                struct string_list_item *item = remote_branches.items + i;
 729
 730                if (!item->util)
 731                        continue;
 732                strbuf_reset(&buf);
 733                strbuf_addstr(&buf, item->string);
 734                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 735                                rename.new, strlen(rename.new));
 736                strbuf_reset(&buf2);
 737                strbuf_addstr(&buf2, item->util);
 738                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 739                                rename.new, strlen(rename.new));
 740                strbuf_reset(&buf3);
 741                strbuf_addf(&buf3, "remote: renamed %s to %s",
 742                                item->string, buf.buf);
 743                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 744                        die(_("creating '%s' failed"), buf.buf);
 745        }
 746        return 0;
 747}
 748
 749static int remove_branches(struct string_list *branches)
 750{
 751        const char **branch_names;
 752        int i, result = 0;
 753
 754        branch_names = xmalloc(branches->nr * sizeof(*branch_names));
 755        for (i = 0; i < branches->nr; i++)
 756                branch_names[i] = branches->items[i].string;
 757        result |= repack_without_refs(branch_names, branches->nr, NULL);
 758        free(branch_names);
 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, 1);
 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                for_each_ref(append_ref_to_tracked_list, states);
 913                sort_string_list(&states->tracked);
 914                get_push_ref_states_noquery(states);
 915        }
 916
 917        return 0;
 918}
 919
 920struct show_info {
 921        struct string_list *list;
 922        struct ref_states *states;
 923        int width, width2;
 924        int any_rebase;
 925};
 926
 927static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 928{
 929        struct show_info *info = cb_data;
 930        int n = strlen(item->string);
 931        if (n > info->width)
 932                info->width = n;
 933        string_list_insert(info->list, item->string);
 934        return 0;
 935}
 936
 937static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 938{
 939        struct show_info *info = cb_data;
 940        struct ref_states *states = info->states;
 941        const char *name = item->string;
 942
 943        if (states->queried) {
 944                const char *fmt = "%s";
 945                const char *arg = "";
 946                if (string_list_has_string(&states->new, name)) {
 947                        fmt = _(" new (next fetch will store in remotes/%s)");
 948                        arg = states->remote->name;
 949                } else if (string_list_has_string(&states->tracked, name))
 950                        arg = _(" tracked");
 951                else if (string_list_has_string(&states->stale, name))
 952                        arg = _(" stale (use 'git remote prune' to remove)");
 953                else
 954                        arg = _(" ???");
 955                printf("    %-*s", info->width, name);
 956                printf(fmt, arg);
 957                printf("\n");
 958        } else
 959                printf("    %s\n", name);
 960
 961        return 0;
 962}
 963
 964static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 965{
 966        struct show_info *show_info = cb_data;
 967        struct ref_states *states = show_info->states;
 968        struct branch_info *branch_info = branch_item->util;
 969        struct string_list_item *item;
 970        int n;
 971
 972        if (!branch_info->merge.nr || !branch_info->remote_name ||
 973            strcmp(states->remote->name, branch_info->remote_name))
 974                return 0;
 975        if ((n = strlen(branch_item->string)) > show_info->width)
 976                show_info->width = n;
 977        if (branch_info->rebase)
 978                show_info->any_rebase = 1;
 979
 980        item = string_list_insert(show_info->list, branch_item->string);
 981        item->util = branch_info;
 982
 983        return 0;
 984}
 985
 986static int show_local_info_item(struct string_list_item *item, void *cb_data)
 987{
 988        struct show_info *show_info = cb_data;
 989        struct branch_info *branch_info = item->util;
 990        struct string_list *merge = &branch_info->merge;
 991        const char *also;
 992        int i;
 993
 994        if (branch_info->rebase && branch_info->merge.nr > 1) {
 995                error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 996                        item->string);
 997                return 0;
 998        }
 999
1000        printf("    %-*s ", show_info->width, item->string);
1001        if (branch_info->rebase) {
1002                printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1003                return 0;
1004        } else if (show_info->any_rebase) {
1005                printf_ln(_(" merges with remote %s"), merge->items[0].string);
1006                also = _("    and with remote");
1007        } else {
1008                printf_ln(_("merges with remote %s"), merge->items[0].string);
1009                also = _("   and with remote");
1010        }
1011        for (i = 1; i < merge->nr; i++)
1012                printf("    %-*s %s %s\n", show_info->width, "", also,
1013                       merge->items[i].string);
1014
1015        return 0;
1016}
1017
1018static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1019{
1020        struct show_info *show_info = cb_data;
1021        struct push_info *push_info = push_item->util;
1022        struct string_list_item *item;
1023        int n;
1024        if ((n = strlen(push_item->string)) > show_info->width)
1025                show_info->width = n;
1026        if ((n = strlen(push_info->dest)) > show_info->width2)
1027                show_info->width2 = n;
1028        item = string_list_append(show_info->list, push_item->string);
1029        item->util = push_item->util;
1030        return 0;
1031}
1032
1033/*
1034 * Sorting comparison for a string list that has push_info
1035 * structs in its util field
1036 */
1037static int cmp_string_with_push(const void *va, const void *vb)
1038{
1039        const struct string_list_item *a = va;
1040        const struct string_list_item *b = vb;
1041        const struct push_info *a_push = a->util;
1042        const struct push_info *b_push = b->util;
1043        int cmp = strcmp(a->string, b->string);
1044        return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1045}
1046
1047static int show_push_info_item(struct string_list_item *item, void *cb_data)
1048{
1049        struct show_info *show_info = cb_data;
1050        struct push_info *push_info = item->util;
1051        const char *src = item->string, *status = NULL;
1052
1053        switch (push_info->status) {
1054        case PUSH_STATUS_CREATE:
1055                status = _("create");
1056                break;
1057        case PUSH_STATUS_DELETE:
1058                status = _("delete");
1059                src = _("(none)");
1060                break;
1061        case PUSH_STATUS_UPTODATE:
1062                status = _("up to date");
1063                break;
1064        case PUSH_STATUS_FASTFORWARD:
1065                status = _("fast-forwardable");
1066                break;
1067        case PUSH_STATUS_OUTOFDATE:
1068                status = _("local out of date");
1069                break;
1070        case PUSH_STATUS_NOTQUERIED:
1071                break;
1072        }
1073        if (status) {
1074                if (push_info->forced)
1075                        printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1076                               show_info->width2, push_info->dest, status);
1077                else
1078                        printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1079                               show_info->width2, push_info->dest, status);
1080        } else {
1081                if (push_info->forced)
1082                        printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1083                               push_info->dest);
1084                else
1085                        printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1086                               push_info->dest);
1087        }
1088        return 0;
1089}
1090
1091static int get_one_entry(struct remote *remote, void *priv)
1092{
1093        struct string_list *list = priv;
1094        struct strbuf url_buf = STRBUF_INIT;
1095        const char **url;
1096        int i, url_nr;
1097
1098        if (remote->url_nr > 0) {
1099                strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1100                string_list_append(list, remote->name)->util =
1101                                strbuf_detach(&url_buf, NULL);
1102        } else
1103                string_list_append(list, remote->name)->util = NULL;
1104        if (remote->pushurl_nr) {
1105                url = remote->pushurl;
1106                url_nr = remote->pushurl_nr;
1107        } else {
1108                url = remote->url;
1109                url_nr = remote->url_nr;
1110        }
1111        for (i = 0; i < url_nr; i++)
1112        {
1113                strbuf_addf(&url_buf, "%s (push)", url[i]);
1114                string_list_append(list, remote->name)->util =
1115                                strbuf_detach(&url_buf, NULL);
1116        }
1117
1118        return 0;
1119}
1120
1121static int show_all(void)
1122{
1123        struct string_list list = STRING_LIST_INIT_NODUP;
1124        int result;
1125
1126        list.strdup_strings = 1;
1127        result = for_each_remote(get_one_entry, &list);
1128
1129        if (!result) {
1130                int i;
1131
1132                sort_string_list(&list);
1133                for (i = 0; i < list.nr; i++) {
1134                        struct string_list_item *item = list.items + i;
1135                        if (verbose)
1136                                printf("%s\t%s\n", item->string,
1137                                        item->util ? (const char *)item->util : "");
1138                        else {
1139                                if (i && !strcmp((item - 1)->string, item->string))
1140                                        continue;
1141                                printf("%s\n", item->string);
1142                        }
1143                }
1144        }
1145        string_list_clear(&list, 1);
1146        return result;
1147}
1148
1149static int show(int argc, const char **argv)
1150{
1151        int no_query = 0, result = 0, query_flag = 0;
1152        struct option options[] = {
1153                OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1154                OPT_END()
1155        };
1156        struct ref_states states;
1157        struct string_list info_list = STRING_LIST_INIT_NODUP;
1158        struct show_info info;
1159
1160        argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1161                             0);
1162
1163        if (argc < 1)
1164                return show_all();
1165
1166        if (!no_query)
1167                query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1168
1169        memset(&states, 0, sizeof(states));
1170        memset(&info, 0, sizeof(info));
1171        info.states = &states;
1172        info.list = &info_list;
1173        for (; argc; argc--, argv++) {
1174                int i;
1175                const char **url;
1176                int url_nr;
1177
1178                get_remote_ref_states(*argv, &states, query_flag);
1179
1180                printf_ln(_("* remote %s"), *argv);
1181                printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1182                       states.remote->url[0] : _("(no URL)"));
1183                if (states.remote->pushurl_nr) {
1184                        url = states.remote->pushurl;
1185                        url_nr = states.remote->pushurl_nr;
1186                } else {
1187                        url = states.remote->url;
1188                        url_nr = states.remote->url_nr;
1189                }
1190                for (i = 0; i < url_nr; i++)
1191                        printf_ln(_("  Push  URL: %s"), url[i]);
1192                if (!i)
1193                        printf_ln(_("  Push  URL: %s"), "(no URL)");
1194                if (no_query)
1195                        printf_ln(_("  HEAD branch: %s"), "(not queried)");
1196                else if (!states.heads.nr)
1197                        printf_ln(_("  HEAD branch: %s"), "(unknown)");
1198                else if (states.heads.nr == 1)
1199                        printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1200                else {
1201                        printf(_("  HEAD branch (remote HEAD is ambiguous,"
1202                                 " may be one of the following):\n"));
1203                        for (i = 0; i < states.heads.nr; i++)
1204                                printf("    %s\n", states.heads.items[i].string);
1205                }
1206
1207                /* remote branch info */
1208                info.width = 0;
1209                for_each_string_list(&states.new, add_remote_to_show_info, &info);
1210                for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1211                for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1212                if (info.list->nr)
1213                        printf_ln(Q_("  Remote branch:%s",
1214                                     "  Remote branches:%s",
1215                                     info.list->nr),
1216                                  no_query ? _(" (status not queried)") : "");
1217                for_each_string_list(info.list, show_remote_info_item, &info);
1218                string_list_clear(info.list, 0);
1219
1220                /* git pull info */
1221                info.width = 0;
1222                info.any_rebase = 0;
1223                for_each_string_list(&branch_list, add_local_to_show_info, &info);
1224                if (info.list->nr)
1225                        printf_ln(Q_("  Local branch configured for 'git pull':",
1226                                     "  Local branches configured for 'git pull':",
1227                                     info.list->nr));
1228                for_each_string_list(info.list, show_local_info_item, &info);
1229                string_list_clear(info.list, 0);
1230
1231                /* git push info */
1232                if (states.remote->mirror)
1233                        printf_ln(_("  Local refs will be mirrored by 'git push'"));
1234
1235                info.width = info.width2 = 0;
1236                for_each_string_list(&states.push, add_push_to_show_info, &info);
1237                qsort(info.list->items, info.list->nr,
1238                        sizeof(*info.list->items), cmp_string_with_push);
1239                if (info.list->nr)
1240                        printf_ln(Q_("  Local ref configured for 'git push'%s:",
1241                                     "  Local refs configured for 'git push'%s:",
1242                                     info.list->nr),
1243                                  no_query ? _(" (status not queried)") : "");
1244                for_each_string_list(info.list, show_push_info_item, &info);
1245                string_list_clear(info.list, 0);
1246
1247                free_remote_ref_states(&states);
1248        }
1249
1250        return result;
1251}
1252
1253static int set_head(int argc, const char **argv)
1254{
1255        int i, opt_a = 0, opt_d = 0, result = 0;
1256        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1257        char *head_name = NULL;
1258
1259        struct option options[] = {
1260                OPT_BOOL('a', "auto", &opt_a,
1261                         N_("set refs/remotes/<name>/HEAD according to remote")),
1262                OPT_BOOL('d', "delete", &opt_d,
1263                         N_("delete refs/remotes/<name>/HEAD")),
1264                OPT_END()
1265        };
1266        argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1267                             0);
1268        if (argc)
1269                strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1270
1271        if (!opt_a && !opt_d && argc == 2) {
1272                head_name = xstrdup(argv[1]);
1273        } else if (opt_a && !opt_d && argc == 1) {
1274                struct ref_states states;
1275                memset(&states, 0, sizeof(states));
1276                get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1277                if (!states.heads.nr)
1278                        result |= error(_("Cannot determine remote HEAD"));
1279                else if (states.heads.nr > 1) {
1280                        result |= error(_("Multiple remote HEAD branches. "
1281                                          "Please choose one explicitly with:"));
1282                        for (i = 0; i < states.heads.nr; i++)
1283                                fprintf(stderr, "  git remote set-head %s %s\n",
1284                                        argv[0], states.heads.items[i].string);
1285                } else
1286                        head_name = xstrdup(states.heads.items[0].string);
1287                free_remote_ref_states(&states);
1288        } else if (opt_d && !opt_a && argc == 1) {
1289                if (delete_ref(buf.buf, NULL, REF_NODEREF))
1290                        result |= error(_("Could not delete %s"), buf.buf);
1291        } else
1292                usage_with_options(builtin_remote_sethead_usage, options);
1293
1294        if (head_name) {
1295                strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1296                /* make sure it's valid */
1297                if (!ref_exists(buf2.buf))
1298                        result |= error(_("Not a valid ref: %s"), buf2.buf);
1299                else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1300                        result |= error(_("Could not setup %s"), buf.buf);
1301                if (opt_a)
1302                        printf("%s/HEAD set to %s\n", argv[0], head_name);
1303                free(head_name);
1304        }
1305
1306        strbuf_release(&buf);
1307        strbuf_release(&buf2);
1308        return result;
1309}
1310
1311static int prune_remote(const char *remote, int dry_run)
1312{
1313        int result = 0, i;
1314        struct ref_states states;
1315        struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1316        const char **delete_refs;
1317        const char *dangling_msg = dry_run
1318                ? _(" %s will become dangling!")
1319                : _(" %s has become dangling!");
1320
1321        memset(&states, 0, sizeof(states));
1322        get_remote_ref_states(remote, &states, GET_REF_STATES);
1323
1324        if (states.stale.nr) {
1325                printf_ln(_("Pruning %s"), remote);
1326                printf_ln(_("URL: %s"),
1327                       states.remote->url_nr
1328                       ? states.remote->url[0]
1329                       : _("(no URL)"));
1330
1331                delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1332                for (i = 0; i < states.stale.nr; i++)
1333                        delete_refs[i] = states.stale.items[i].util;
1334                if (!dry_run)
1335                        result |= repack_without_refs(delete_refs,
1336                                                      states.stale.nr, NULL);
1337                free(delete_refs);
1338        }
1339
1340        for (i = 0; i < states.stale.nr; i++) {
1341                const char *refname = states.stale.items[i].util;
1342
1343                string_list_insert(&delete_refs_list, refname);
1344
1345                if (!dry_run)
1346                        result |= delete_ref(refname, NULL, 0);
1347
1348                if (dry_run)
1349                        printf_ln(_(" * [would prune] %s"),
1350                               abbrev_ref(refname, "refs/remotes/"));
1351                else
1352                        printf_ln(_(" * [pruned] %s"),
1353                               abbrev_ref(refname, "refs/remotes/"));
1354        }
1355
1356        warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1357        string_list_clear(&delete_refs_list, 0);
1358
1359        free_remote_ref_states(&states);
1360        return result;
1361}
1362
1363static int prune(int argc, const char **argv)
1364{
1365        int dry_run = 0, result = 0;
1366        struct option options[] = {
1367                OPT__DRY_RUN(&dry_run, N_("dry run")),
1368                OPT_END()
1369        };
1370
1371        argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1372                             0);
1373
1374        if (argc < 1)
1375                usage_with_options(builtin_remote_prune_usage, options);
1376
1377        for (; argc; argc--, argv++)
1378                result |= prune_remote(*argv, dry_run);
1379
1380        return result;
1381}
1382
1383static int get_remote_default(const char *key, const char *value, void *priv)
1384{
1385        if (strcmp(key, "remotes.default") == 0) {
1386                int *found = priv;
1387                *found = 1;
1388        }
1389        return 0;
1390}
1391
1392static int update(int argc, const char **argv)
1393{
1394        int i, prune = -1;
1395        struct option options[] = {
1396                OPT_BOOL('p', "prune", &prune,
1397                         N_("prune remotes after fetching")),
1398                OPT_END()
1399        };
1400        struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1401        int default_defined = 0;
1402        int retval;
1403
1404        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1405                             PARSE_OPT_KEEP_ARGV0);
1406
1407        argv_array_push(&fetch_argv, "fetch");
1408
1409        if (prune != -1)
1410                argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1411        if (verbose)
1412                argv_array_push(&fetch_argv, "-v");
1413        argv_array_push(&fetch_argv, "--multiple");
1414        if (argc < 2)
1415                argv_array_push(&fetch_argv, "default");
1416        for (i = 1; i < argc; i++)
1417                argv_array_push(&fetch_argv, argv[i]);
1418
1419        if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1420                git_config(get_remote_default, &default_defined);
1421                if (!default_defined) {
1422                        argv_array_pop(&fetch_argv);
1423                        argv_array_push(&fetch_argv, "--all");
1424                }
1425        }
1426
1427        retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1428        argv_array_clear(&fetch_argv);
1429        return retval;
1430}
1431
1432static int remove_all_fetch_refspecs(const char *remote, const char *key)
1433{
1434        return git_config_set_multivar(key, NULL, NULL, 1);
1435}
1436
1437static int add_branches(struct remote *remote, const char **branches,
1438                        const char *key)
1439{
1440        const char *remotename = remote->name;
1441        int mirror = remote->mirror;
1442        struct strbuf refspec = STRBUF_INIT;
1443
1444        for (; *branches; branches++)
1445                if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1446                        strbuf_release(&refspec);
1447                        return 1;
1448                }
1449
1450        strbuf_release(&refspec);
1451        return 0;
1452}
1453
1454static int set_remote_branches(const char *remotename, const char **branches,
1455                                int add_mode)
1456{
1457        struct strbuf key = STRBUF_INIT;
1458        struct remote *remote;
1459
1460        strbuf_addf(&key, "remote.%s.fetch", remotename);
1461
1462        if (!remote_is_configured(remotename))
1463                die(_("No such remote '%s'"), remotename);
1464        remote = remote_get(remotename);
1465
1466        if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1467                strbuf_release(&key);
1468                return 1;
1469        }
1470        if (add_branches(remote, branches, key.buf)) {
1471                strbuf_release(&key);
1472                return 1;
1473        }
1474
1475        strbuf_release(&key);
1476        return 0;
1477}
1478
1479static int set_branches(int argc, const char **argv)
1480{
1481        int add_mode = 0;
1482        struct option options[] = {
1483                OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1484                OPT_END()
1485        };
1486
1487        argc = parse_options(argc, argv, NULL, options,
1488                             builtin_remote_setbranches_usage, 0);
1489        if (argc == 0) {
1490                error(_("no remote specified"));
1491                usage_with_options(builtin_remote_setbranches_usage, options);
1492        }
1493        argv[argc] = NULL;
1494
1495        return set_remote_branches(argv[0], argv + 1, add_mode);
1496}
1497
1498static int set_url(int argc, const char **argv)
1499{
1500        int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1501        int matches = 0, negative_matches = 0;
1502        const char *remotename = NULL;
1503        const char *newurl = NULL;
1504        const char *oldurl = NULL;
1505        struct remote *remote;
1506        regex_t old_regex;
1507        const char **urlset;
1508        int urlset_nr;
1509        struct strbuf name_buf = STRBUF_INIT;
1510        struct option options[] = {
1511                OPT_BOOL('\0', "push", &push_mode,
1512                         N_("manipulate push URLs")),
1513                OPT_BOOL('\0', "add", &add_mode,
1514                         N_("add URL")),
1515                OPT_BOOL('\0', "delete", &delete_mode,
1516                            N_("delete URLs")),
1517                OPT_END()
1518        };
1519        argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1520                             PARSE_OPT_KEEP_ARGV0);
1521
1522        if (add_mode && delete_mode)
1523                die(_("--add --delete doesn't make sense"));
1524
1525        if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1526                usage_with_options(builtin_remote_seturl_usage, options);
1527
1528        remotename = argv[1];
1529        newurl = argv[2];
1530        if (argc > 3)
1531                oldurl = argv[3];
1532
1533        if (delete_mode)
1534                oldurl = newurl;
1535
1536        if (!remote_is_configured(remotename))
1537                die(_("No such remote '%s'"), remotename);
1538        remote = remote_get(remotename);
1539
1540        if (push_mode) {
1541                strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1542                urlset = remote->pushurl;
1543                urlset_nr = remote->pushurl_nr;
1544        } else {
1545                strbuf_addf(&name_buf, "remote.%s.url", remotename);
1546                urlset = remote->url;
1547                urlset_nr = remote->url_nr;
1548        }
1549
1550        /* Special cases that add new entry. */
1551        if ((!oldurl && !delete_mode) || add_mode) {
1552                if (add_mode)
1553                        git_config_set_multivar(name_buf.buf, newurl,
1554                                "^$", 0);
1555                else
1556                        git_config_set(name_buf.buf, newurl);
1557                strbuf_release(&name_buf);
1558                return 0;
1559        }
1560
1561        /* Old URL specified. Demand that one matches. */
1562        if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1563                die(_("Invalid old URL pattern: %s"), oldurl);
1564
1565        for (i = 0; i < urlset_nr; i++)
1566                if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1567                        matches++;
1568                else
1569                        negative_matches++;
1570        if (!delete_mode && !matches)
1571                die(_("No such URL found: %s"), oldurl);
1572        if (delete_mode && !negative_matches && !push_mode)
1573                die(_("Will not delete all non-push URLs"));
1574
1575        regfree(&old_regex);
1576
1577        if (!delete_mode)
1578                git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1579        else
1580                git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1581        return 0;
1582}
1583
1584int cmd_remote(int argc, const char **argv, const char *prefix)
1585{
1586        struct option options[] = {
1587                OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1588                OPT_END()
1589        };
1590        int result;
1591
1592        argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1593                PARSE_OPT_STOP_AT_NON_OPTION);
1594
1595        if (argc < 1)
1596                result = show_all();
1597        else if (!strcmp(argv[0], "add"))
1598                result = add(argc, argv);
1599        else if (!strcmp(argv[0], "rename"))
1600                result = mv(argc, argv);
1601        else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1602                result = rm(argc, argv);
1603        else if (!strcmp(argv[0], "set-head"))
1604                result = set_head(argc, argv);
1605        else if (!strcmp(argv[0], "set-branches"))
1606                result = set_branches(argc, argv);
1607        else if (!strcmp(argv[0], "set-url"))
1608                result = set_url(argc, argv);
1609        else if (!strcmp(argv[0], "show"))
1610                result = show(argc, argv);
1611        else if (!strcmp(argv[0], "prune"))
1612                result = prune(argc, argv);
1613        else if (!strcmp(argv[0], "update"))
1614                result = update(argc, argv);
1615        else {
1616                error(_("Unknown subcommand: %s"), argv[0]);
1617                usage_with_options(builtin_remote_usage, options);
1618        }
1619
1620        return result ? 1 : 0;
1621}