builtin/remote.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "parse-options.h"
   4 #include "transport.h"
   5 #include "remote.h"
   6 #include "string-list.h"
   7 #include "strbuf.h"
   8 #include "run-command.h"
   9 #include "refs.h"
  10 #include "refspec.h"
  11 #include "object-store.h"
  12 #include "argv-array.h"
  13
  14 static const char * const builtin_remote_usage[] = {
  15         N_("git remote [-v | --verbose]"),
  16         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  17         N_("git remote rename <old> <new>"),
  18         N_("git remote remove <name>"),
  19         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  20         N_("git remote [-v | --verbose] show [-n] <name>"),
  21         N_("git remote prune [-n | --dry-run] <name>"),
  22         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  23         N_("git remote set-branches [--add] <name> <branch>..."),
  24         N_("git remote get-url [--push] [--all] <name>"),
  25         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  26         N_("git remote set-url --add <name> <newurl>"),
  27         N_("git remote set-url --delete <name> <url>"),
  28         NULL
  29 };
  30
  31 static const char * const builtin_remote_add_usage[] = {
  32         N_("git remote add [<options>] <name> <url>"),
  33         NULL
  34 };
  35
  36 static const char * const builtin_remote_rename_usage[] = {
  37         N_("git remote rename <old> <new>"),
  38         NULL
  39 };
  40
  41 static const char * const builtin_remote_rm_usage[] = {
  42         N_("git remote remove <name>"),
  43         NULL
  44 };
  45
  46 static const char * const builtin_remote_sethead_usage[] = {
  47         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  48         NULL
  49 };
  50
  51 static const char * const builtin_remote_setbranches_usage[] = {
  52         N_("git remote set-branches <name> <branch>..."),
  53         N_("git remote set-branches --add <name> <branch>..."),
  54         NULL
  55 };
  56
  57 static const char * const builtin_remote_show_usage[] = {
  58         N_("git remote show [<options>] <name>"),
  59         NULL
  60 };
  61
  62 static const char * const builtin_remote_prune_usage[] = {
  63         N_("git remote prune [<options>] <name>"),
  64         NULL
  65 };
  66
  67 static const char * const builtin_remote_update_usage[] = {
  68         N_("git remote update [<options>] [<group> | <remote>]..."),
  69         NULL
  70 };
  71
  72 static const char * const builtin_remote_geturl_usage[] = {
  73         N_("git remote get-url [--push] [--all] <name>"),
  74         NULL
  75 };
  76
  77 static const char * const builtin_remote_seturl_usage[] = {
  78         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  79         N_("git remote set-url --add <name> <newurl>"),
  80         N_("git remote set-url --delete <name> <url>"),
  81         NULL
  82 };
  83
  84 #define GET_REF_STATES (1<<0)
  85 #define GET_HEAD_NAMES (1<<1)
  86 #define GET_PUSH_REF_STATES (1<<2)
  87
  88 static int verbose;
  89
  90 static int fetch_remote(const char *name)
  91 {
  92         const char *argv[] = { "fetch", name, NULL, NULL };
  93         if (verbose) {
  94                 argv[1] = "-v";
  95                 argv[2] = name;
  96         }
  97         printf_ln(_("Updating %s"), name);
  98         if (run_command_v_opt(argv, RUN_GIT_CMD))
  99                 return error(_("Could not fetch %s"), name);
 100         return 0;
 101 }
 102
 103 enum {
 104         TAGS_UNSET = 0,
 105         TAGS_DEFAULT = 1,
 106         TAGS_SET = 2
 107 };
 108
 109 #define MIRROR_NONE 0
 110 #define MIRROR_FETCH 1
 111 #define MIRROR_PUSH 2
 112 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 113
 114 static void add_branch(const char *key, const char *branchname,
 115                        const char *remotename, int mirror, struct strbuf *tmp)
 116 {
 117         strbuf_reset(tmp);
 118         strbuf_addch(tmp, '+');
 119         if (mirror)
 120                 strbuf_addf(tmp, "refs/%s:refs/%s",
 121                                 branchname, branchname);
 122         else
 123                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 124                                 branchname, remotename, branchname);
 125         git_config_set_multivar(key, tmp->buf, "^$", 0);
 126 }
 127
 128 static const char mirror_advice[] =
 129 N_("--mirror is dangerous and deprecated; please\n"
 130    "\t use --mirror=fetch or --mirror=push instead");
 131
 132 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 133 {
 134         unsigned *mirror = opt->value;
 135         if (not)
 136                 *mirror = MIRROR_NONE;
 137         else if (!arg) {
 138                 warning("%s", _(mirror_advice));
 139                 *mirror = MIRROR_BOTH;
 140         }
 141         else if (!strcmp(arg, "fetch"))
 142                 *mirror = MIRROR_FETCH;
 143         else if (!strcmp(arg, "push"))
 144                 *mirror = MIRROR_PUSH;
 145         else
 146                 return error(_("unknown mirror argument: %s"), arg);
 147         return 0;
 148 }
 149
 150 static int add(int argc, const char **argv)
 151 {
 152         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 153         unsigned mirror = MIRROR_NONE;
 154         struct string_list track = STRING_LIST_INIT_NODUP;
 155         const char *master = NULL;
 156         struct remote *remote;
 157         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 158         const char *name, *url;
 159         int i;
 160
 161         struct option options[] = {
 162                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 163                 OPT_SET_INT(0, "tags", &fetch_tags,
 164                             N_("import all tags and associated objects when fetching"),
 165                             TAGS_SET),
 166                 OPT_SET_INT(0, NULL, &fetch_tags,
 167                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 168                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 169                                 N_("branch(es) to track")),
 170                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 171                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 172                         N_("set up remote as a mirror to push to or fetch from"),
 173                         PARSE_OPT_OPTARG | PARSE_OPT_COMP_ARG, parse_mirror_opt },
 174                 OPT_END()
 175         };
 176
 177         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 178                              0);
 179
 180         if (argc != 2)
 181                 usage_with_options(builtin_remote_add_usage, options);
 182
 183         if (mirror && master)
 184                 die(_("specifying a master branch makes no sense with --mirror"));
 185         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 186                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 187
 188         name = argv[0];
 189         url = argv[1];
 190
 191         remote = remote_get(name);
 192         if (remote_is_configured(remote, 1))
 193                 die(_("remote %s already exists."), name);
 194
 195         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 196         if (!valid_fetch_refspec(buf2.buf))
 197                 die(_("'%s' is not a valid remote name"), name);
 198
 199         strbuf_addf(&buf, "remote.%s.url", name);
 200         git_config_set(buf.buf, url);
 201
 202         if (!mirror || mirror & MIRROR_FETCH) {
 203                 strbuf_reset(&buf);
 204                 strbuf_addf(&buf, "remote.%s.fetch", name);
 205                 if (track.nr == 0)
 206                         string_list_append(&track, "*");
 207                 for (i = 0; i < track.nr; i++) {
 208                         add_branch(buf.buf, track.items[i].string,
 209                                    name, mirror, &buf2);
 210                 }
 211         }
 212
 213         if (mirror & MIRROR_PUSH) {
 214                 strbuf_reset(&buf);
 215                 strbuf_addf(&buf, "remote.%s.mirror", name);
 216                 git_config_set(buf.buf, "true");
 217         }
 218
 219         if (fetch_tags != TAGS_DEFAULT) {
 220                 strbuf_reset(&buf);
 221                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 222                 git_config_set(buf.buf,
 223                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 224         }
 225
 226         if (fetch && fetch_remote(name))
 227                 return 1;
 228
 229         if (master) {
 230                 strbuf_reset(&buf);
 231                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 232
 233                 strbuf_reset(&buf2);
 234                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 235
 236                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 237                         return error(_("Could not setup master '%s'"), master);
 238         }
 239
 240         strbuf_release(&buf);
 241         strbuf_release(&buf2);
 242         string_list_clear(&track, 0);
 243
 244         return 0;
 245 }
 246
 247 struct branch_info {
 248         char *remote_name;
 249         struct string_list merge;
 250         enum {
 251                 NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE, REBASE_MERGES
 252         } rebase;
 253 };
 254
 255 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
 256
 257 static const char *abbrev_ref(const char *name, const char *prefix)
 258 {
 259         skip_prefix(name, prefix, &name);
 260         return name;
 261 }
 262 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 263
 264 static int config_read_branches(const char *key, const char *value, void *cb)
 265 {
 266         if (starts_with(key, "branch.")) {
 267                 const char *orig_key = key;
 268                 char *name;
 269                 struct string_list_item *item;
 270                 struct branch_info *info;
 271                 enum { REMOTE, MERGE, REBASE } type;
 272                 size_t key_len;
 273
 274                 key += 7;
 275                 if (strip_suffix(key, ".remote", &key_len)) {
 276                         name = xmemdupz(key, key_len);
 277                         type = REMOTE;
 278                 } else if (strip_suffix(key, ".merge", &key_len)) {
 279                         name = xmemdupz(key, key_len);
 280                         type = MERGE;
 281                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 282                         name = xmemdupz(key, key_len);
 283                         type = REBASE;
 284                 } else
 285                         return 0;
 286
 287                 item = string_list_insert(&branch_list, name);
 288
 289                 if (!item->util)
 290                         item->util = xcalloc(1, sizeof(struct branch_info));
 291                 info = item->util;
 292                 if (type == REMOTE) {
 293                         if (info->remote_name)
 294                                 warning(_("more than one %s"), orig_key);
 295                         info->remote_name = xstrdup(value);
 296                 } else if (type == MERGE) {
 297                         char *space = strchr(value, ' ');
 298                         value = abbrev_branch(value);
 299                         while (space) {
 300                                 char *merge;
 301                                 merge = xstrndup(value, space - value);
 302                                 string_list_append(&info->merge, merge);
 303                                 value = abbrev_branch(space + 1);
 304                                 space = strchr(value, ' ');
 305                         }
 306                         string_list_append(&info->merge, xstrdup(value));
 307                 } else {
 308                         int v = git_parse_maybe_bool(value);
 309                         if (v >= 0)
 310                                 info->rebase = v;
 311                         else if (!strcmp(value, "preserve"))
 312                                 info->rebase = NORMAL_REBASE;
 313                         else if (!strcmp(value, "merges"))
 314                                 info->rebase = REBASE_MERGES;
 315                         else if (!strcmp(value, "interactive"))
 316                                 info->rebase = INTERACTIVE_REBASE;
 317                 }
 318         }
 319         return 0;
 320 }
 321
 322 static void read_branches(void)
 323 {
 324         if (branch_list.nr)
 325                 return;
 326         git_config(config_read_branches, NULL);
 327 }
 328
 329 struct ref_states {
 330         struct remote *remote;
 331         struct string_list new_refs, stale, tracked, heads, push;
 332         int queried;
 333 };
 334
 335 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 336 {
 337         struct ref *fetch_map = NULL, **tail = &fetch_map;
 338         struct ref *ref, *stale_refs;
 339         int i;
 340
 341         for (i = 0; i < states->remote->fetch.nr; i++)
 342                 if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
 343                         die(_("Could not get fetch map for refspec %s"),
 344                                 states->remote->fetch.raw[i]);
 345
 346         states->new_refs.strdup_strings = 1;
 347         states->tracked.strdup_strings = 1;
 348         states->stale.strdup_strings = 1;
 349         for (ref = fetch_map; ref; ref = ref->next) {
 350                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 351                         string_list_append(&states->new_refs, abbrev_branch(ref->name));
 352                 else
 353                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 354         }
 355         stale_refs = get_stale_heads(&states->remote->fetch, fetch_map);
 356         for (ref = stale_refs; ref; ref = ref->next) {
 357                 struct string_list_item *item =
 358                         string_list_append(&states->stale, abbrev_branch(ref->name));
 359                 item->util = xstrdup(ref->name);
 360         }
 361         free_refs(stale_refs);
 362         free_refs(fetch_map);
 363
 364         string_list_sort(&states->new_refs);
 365         string_list_sort(&states->tracked);
 366         string_list_sort(&states->stale);
 367
 368         return 0;
 369 }
 370
 371 struct push_info {
 372         char *dest;
 373         int forced;
 374         enum {
 375                 PUSH_STATUS_CREATE = 0,
 376                 PUSH_STATUS_DELETE,
 377                 PUSH_STATUS_UPTODATE,
 378                 PUSH_STATUS_FASTFORWARD,
 379                 PUSH_STATUS_OUTOFDATE,
 380                 PUSH_STATUS_NOTQUERIED
 381         } status;
 382 };
 383
 384 static int get_push_ref_states(const struct ref *remote_refs,
 385         struct ref_states *states)
 386 {
 387         struct remote *remote = states->remote;
 388         struct ref *ref, *local_refs, *push_map;
 389         if (remote->mirror)
 390                 return 0;
 391
 392         local_refs = get_local_heads();
 393         push_map = copy_ref_list(remote_refs);
 394
 395         match_push_refs(local_refs, &push_map, &remote->push, MATCH_REFS_NONE);
 396
 397         states->push.strdup_strings = 1;
 398         for (ref = push_map; ref; ref = ref->next) {
 399                 struct string_list_item *item;
 400                 struct push_info *info;
 401
 402                 if (!ref->peer_ref)
 403                         continue;
 404                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 405
 406                 item = string_list_append(&states->push,
 407                                           abbrev_branch(ref->peer_ref->name));
 408                 item->util = xcalloc(1, sizeof(struct push_info));
 409                 info = item->util;
 410                 info->forced = ref->force;
 411                 info->dest = xstrdup(abbrev_branch(ref->name));
 412
 413                 if (is_null_oid(&ref->new_oid)) {
 414                         info->status = PUSH_STATUS_DELETE;
 415                 } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
 416                         info->status = PUSH_STATUS_UPTODATE;
 417                 else if (is_null_oid(&ref->old_oid))
 418                         info->status = PUSH_STATUS_CREATE;
 419                 else if (has_object_file(&ref->old_oid) &&
 420                          ref_newer(&ref->new_oid, &ref->old_oid))
 421                         info->status = PUSH_STATUS_FASTFORWARD;
 422                 else
 423                         info->status = PUSH_STATUS_OUTOFDATE;
 424         }
 425         free_refs(local_refs);
 426         free_refs(push_map);
 427         return 0;
 428 }
 429
 430 static int get_push_ref_states_noquery(struct ref_states *states)
 431 {
 432         int i;
 433         struct remote *remote = states->remote;
 434         struct string_list_item *item;
 435         struct push_info *info;
 436
 437         if (remote->mirror)
 438                 return 0;
 439
 440         states->push.strdup_strings = 1;
 441         if (!remote->push.nr) {
 442                 item = string_list_append(&states->push, _("(matching)"));
 443                 info = item->util = xcalloc(1, sizeof(struct push_info));
 444                 info->status = PUSH_STATUS_NOTQUERIED;
 445                 info->dest = xstrdup(item->string);
 446         }
 447         for (i = 0; i < remote->push.nr; i++) {
 448                 const struct refspec_item *spec = &remote->push.items[i];
 449                 if (spec->matching)
 450                         item = string_list_append(&states->push, _("(matching)"));
 451                 else if (strlen(spec->src))
 452                         item = string_list_append(&states->push, spec->src);
 453                 else
 454                         item = string_list_append(&states->push, _("(delete)"));
 455
 456                 info = item->util = xcalloc(1, sizeof(struct push_info));
 457                 info->forced = spec->force;
 458                 info->status = PUSH_STATUS_NOTQUERIED;
 459                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 460         }
 461         return 0;
 462 }
 463
 464 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 465 {
 466         struct ref *ref, *matches;
 467         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 468         struct refspec_item refspec;
 469
 470         refspec.force = 0;
 471         refspec.pattern = 1;
 472         refspec.src = refspec.dst = "refs/heads/*";
 473         states->heads.strdup_strings = 1;
 474         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 475         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 476                                     fetch_map, 1);
 477         for (ref = matches; ref; ref = ref->next)
 478                 string_list_append(&states->heads, abbrev_branch(ref->name));
 479
 480         free_refs(fetch_map);
 481         free_refs(matches);
 482
 483         return 0;
 484 }
 485
 486 struct known_remote {
 487         struct known_remote *next;
 488         struct remote *remote;
 489 };
 490
 491 struct known_remotes {
 492         struct remote *to_delete;
 493         struct known_remote *list;
 494 };
 495
 496 static int add_known_remote(struct remote *remote, void *cb_data)
 497 {
 498         struct known_remotes *all = cb_data;
 499         struct known_remote *r;
 500
 501         if (!strcmp(all->to_delete->name, remote->name))
 502                 return 0;
 503
 504         r = xmalloc(sizeof(*r));
 505         r->remote = remote;
 506         r->next = all->list;
 507         all->list = r;
 508         return 0;
 509 }
 510
 511 struct branches_for_remote {
 512         struct remote *remote;
 513         struct string_list *branches, *skipped;
 514         struct known_remotes *keep;
 515 };
 516
 517 static int add_branch_for_removal(const char *refname,
 518         const struct object_id *oid, int flags, void *cb_data)
 519 {
 520         struct branches_for_remote *branches = cb_data;
 521         struct refspec_item refspec;
 522         struct known_remote *kr;
 523
 524         memset(&refspec, 0, sizeof(refspec));
 525         refspec.dst = (char *)refname;
 526         if (remote_find_tracking(branches->remote, &refspec))
 527                 return 0;
 528
 529         /* don't delete a branch if another remote also uses it */
 530         for (kr = branches->keep->list; kr; kr = kr->next) {
 531                 memset(&refspec, 0, sizeof(refspec));
 532                 refspec.dst = (char *)refname;
 533                 if (!remote_find_tracking(kr->remote, &refspec))
 534                         return 0;
 535         }
 536
 537         /* don't delete non-remote-tracking refs */
 538         if (!starts_with(refname, "refs/remotes/")) {
 539                 /* advise user how to delete local branches */
 540                 if (starts_with(refname, "refs/heads/"))
 541                         string_list_append(branches->skipped,
 542                                            abbrev_branch(refname));
 543                 /* silently skip over other non-remote refs */
 544                 return 0;
 545         }
 546
 547         string_list_append(branches->branches, refname);
 548
 549         return 0;
 550 }
 551
 552 struct rename_info {
 553         const char *old_name;
 554         const char *new_name;
 555         struct string_list *remote_branches;
 556 };
 557
 558 static int read_remote_branches(const char *refname,
 559         const struct object_id *oid, int flags, void *cb_data)
 560 {
 561         struct rename_info *rename = cb_data;
 562         struct strbuf buf = STRBUF_INIT;
 563         struct string_list_item *item;
 564         int flag;
 565         const char *symref;
 566
 567         strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
 568         if (starts_with(refname, buf.buf)) {
 569                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 570                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 571                                             NULL, &flag);
 572                 if (symref && (flag & REF_ISSYMREF))
 573                         item->util = xstrdup(symref);
 574                 else
 575                         item->util = NULL;
 576         }
 577         strbuf_release(&buf);
 578
 579         return 0;
 580 }
 581
 582 static int migrate_file(struct remote *remote)
 583 {
 584         struct strbuf buf = STRBUF_INIT;
 585         int i;
 586
 587         strbuf_addf(&buf, "remote.%s.url", remote->name);
 588         for (i = 0; i < remote->url_nr; i++)
 589                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 590         strbuf_reset(&buf);
 591         strbuf_addf(&buf, "remote.%s.push", remote->name);
 592         for (i = 0; i < remote->push.raw_nr; i++)
 593                 git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
 594         strbuf_reset(&buf);
 595         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 596         for (i = 0; i < remote->fetch.raw_nr; i++)
 597                 git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
 598         if (remote->origin == REMOTE_REMOTES)
 599                 unlink_or_warn(git_path("remotes/%s", remote->name));
 600         else if (remote->origin == REMOTE_BRANCHES)
 601                 unlink_or_warn(git_path("branches/%s", remote->name));
 602         strbuf_release(&buf);
 603
 604         return 0;
 605 }
 606
 607 static int mv(int argc, const char **argv)
 608 {
 609         struct option options[] = {
 610                 OPT_END()
 611         };
 612         struct remote *oldremote, *newremote;
 613         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 614                 old_remote_context = STRBUF_INIT;
 615         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 616         struct rename_info rename;
 617         int i, refspec_updated = 0;
 618
 619         if (argc != 3)
 620                 usage_with_options(builtin_remote_rename_usage, options);
 621
 622         rename.old_name = argv[1];
 623         rename.new_name = argv[2];
 624         rename.remote_branches = &remote_branches;
 625
 626         oldremote = remote_get(rename.old_name);
 627         if (!remote_is_configured(oldremote, 1))
 628                 die(_("No such remote: %s"), rename.old_name);
 629
 630         if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
 631                 return migrate_file(oldremote);
 632
 633         newremote = remote_get(rename.new_name);
 634         if (remote_is_configured(newremote, 1))
 635                 die(_("remote %s already exists."), rename.new_name);
 636
 637         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new_name);
 638         if (!valid_fetch_refspec(buf.buf))
 639                 die(_("'%s' is not a valid remote name"), rename.new_name);
 640
 641         strbuf_reset(&buf);
 642         strbuf_addf(&buf, "remote.%s", rename.old_name);
 643         strbuf_addf(&buf2, "remote.%s", rename.new_name);
 644         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 645                 return error(_("Could not rename config section '%s' to '%s'"),
 646                                 buf.buf, buf2.buf);
 647
 648         strbuf_reset(&buf);
 649         strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 650         git_config_set_multivar(buf.buf, NULL, NULL, 1);
 651         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 652         for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 653                 char *ptr;
 654
 655                 strbuf_reset(&buf2);
 656                 strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
 657                 ptr = strstr(buf2.buf, old_remote_context.buf);
 658                 if (ptr) {
 659                         refspec_updated = 1;
 660                         strbuf_splice(&buf2,
 661                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 662                                       strlen(rename.old_name), rename.new_name,
 663                                       strlen(rename.new_name));
 664                 } else
 665                         warning(_("Not updating non-default fetch refspec\n"
 666                                   "\t%s\n"
 667                                   "\tPlease update the configuration manually if necessary."),
 668                                 buf2.buf);
 669
 670                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 671         }
 672
 673         read_branches();
 674         for (i = 0; i < branch_list.nr; i++) {
 675                 struct string_list_item *item = branch_list.items + i;
 676                 struct branch_info *info = item->util;
 677                 if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
 678                         strbuf_reset(&buf);
 679                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 680                         git_config_set(buf.buf, rename.new_name);
 681                 }
 682         }
 683
 684         if (!refspec_updated)
 685                 return 0;
 686
 687         /*
 688          * First remove symrefs, then rename the rest, finally create
 689          * the new symrefs.
 690          */
 691         for_each_ref(read_remote_branches, &rename);
 692         for (i = 0; i < remote_branches.nr; i++) {
 693                 struct string_list_item *item = remote_branches.items + i;
 694                 int flag = 0;
 695                 struct object_id oid;
 696
 697                 read_ref_full(item->string, RESOLVE_REF_READING, &oid, &flag);
 698                 if (!(flag & REF_ISSYMREF))
 699                         continue;
 700                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
 701                         die(_("deleting '%s' failed"), item->string);
 702         }
 703         for (i = 0; i < remote_branches.nr; i++) {
 704                 struct string_list_item *item = remote_branches.items + i;
 705
 706                 if (item->util)
 707                         continue;
 708                 strbuf_reset(&buf);
 709                 strbuf_addstr(&buf, item->string);
 710                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 711                                 rename.new_name, strlen(rename.new_name));
 712                 strbuf_reset(&buf2);
 713                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 714                                 item->string, buf.buf);
 715                 if (rename_ref(item->string, buf.buf, buf2.buf))
 716                         die(_("renaming '%s' failed"), item->string);
 717         }
 718         for (i = 0; i < remote_branches.nr; i++) {
 719                 struct string_list_item *item = remote_branches.items + i;
 720
 721                 if (!item->util)
 722                         continue;
 723                 strbuf_reset(&buf);
 724                 strbuf_addstr(&buf, item->string);
 725                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 726                                 rename.new_name, strlen(rename.new_name));
 727                 strbuf_reset(&buf2);
 728                 strbuf_addstr(&buf2, item->util);
 729                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
 730                                 rename.new_name, strlen(rename.new_name));
 731                 strbuf_reset(&buf3);
 732                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 733                                 item->string, buf.buf);
 734                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 735                         die(_("creating '%s' failed"), buf.buf);
 736         }
 737         return 0;
 738 }
 739
 740 static int rm(int argc, const char **argv)
 741 {
 742         struct option options[] = {
 743                 OPT_END()
 744         };
 745         struct remote *remote;
 746         struct strbuf buf = STRBUF_INIT;
 747         struct known_remotes known_remotes = { NULL, NULL };
 748         struct string_list branches = STRING_LIST_INIT_DUP;
 749         struct string_list skipped = STRING_LIST_INIT_DUP;
 750         struct branches_for_remote cb_data;
 751         int i, result;
 752
 753         memset(&cb_data, 0, sizeof(cb_data));
 754         cb_data.branches = &branches;
 755         cb_data.skipped = &skipped;
 756         cb_data.keep = &known_remotes;
 757
 758         if (argc != 2)
 759                 usage_with_options(builtin_remote_rm_usage, options);
 760
 761         remote = remote_get(argv[1]);
 762         if (!remote_is_configured(remote, 1))
 763                 die(_("No such remote: %s"), argv[1]);
 764
 765         known_remotes.to_delete = remote;
 766         for_each_remote(add_known_remote, &known_remotes);
 767
 768         read_branches();
 769         for (i = 0; i < branch_list.nr; i++) {
 770                 struct string_list_item *item = branch_list.items + i;
 771                 struct branch_info *info = item->util;
 772                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 773                         const char *keys[] = { "remote", "merge", NULL }, **k;
 774                         for (k = keys; *k; k++) {
 775                                 strbuf_reset(&buf);
 776                                 strbuf_addf(&buf, "branch.%s.%s",
 777                                                 item->string, *k);
 778                                 result = git_config_set_gently(buf.buf, NULL);
 779                                 if (result && result != CONFIG_NOTHING_SET)
 780                                         die(_("could not unset '%s'"), buf.buf);
 781                         }
 782                 }
 783         }
 784
 785         /*
 786          * We cannot just pass a function to for_each_ref() which deletes
 787          * the branches one by one, since for_each_ref() relies on cached
 788          * refs, which are invalidated when deleting a branch.
 789          */
 790         cb_data.remote = remote;
 791         result = for_each_ref(add_branch_for_removal, &cb_data);
 792         strbuf_release(&buf);
 793
 794         if (!result)
 795                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
 796         string_list_clear(&branches, 0);
 797
 798         if (skipped.nr) {
 799                 fprintf_ln(stderr,
 800                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 801                               "to delete it, use:",
 802                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 803                               "to delete them, use:",
 804                               skipped.nr));
 805                 for (i = 0; i < skipped.nr; i++)
 806                         fprintf(stderr, "  git branch -d %s\n",
 807                                 skipped.items[i].string);
 808         }
 809         string_list_clear(&skipped, 0);
 810
 811         if (!result) {
 812                 strbuf_addf(&buf, "remote.%s", remote->name);
 813                 if (git_config_rename_section(buf.buf, NULL) < 1)
 814                         return error(_("Could not remove config section '%s'"), buf.buf);
 815         }
 816
 817         return result;
 818 }
 819
 820 static void clear_push_info(void *util, const char *string)
 821 {
 822         struct push_info *info = util;
 823         free(info->dest);
 824         free(info);
 825 }
 826
 827 static void free_remote_ref_states(struct ref_states *states)
 828 {
 829         string_list_clear(&states->new_refs, 0);
 830         string_list_clear(&states->stale, 1);
 831         string_list_clear(&states->tracked, 0);
 832         string_list_clear(&states->heads, 0);
 833         string_list_clear_func(&states->push, clear_push_info);
 834 }
 835
 836 static int append_ref_to_tracked_list(const char *refname,
 837         const struct object_id *oid, int flags, void *cb_data)
 838 {
 839         struct ref_states *states = cb_data;
 840         struct refspec_item refspec;
 841
 842         if (flags & REF_ISSYMREF)
 843                 return 0;
 844
 845         memset(&refspec, 0, sizeof(refspec));
 846         refspec.dst = (char *)refname;
 847         if (!remote_find_tracking(states->remote, &refspec))
 848                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 849
 850         return 0;
 851 }
 852
 853 static int get_remote_ref_states(const char *name,
 854                                  struct ref_states *states,
 855                                  int query)
 856 {
 857         struct transport *transport;
 858         const struct ref *remote_refs;
 859
 860         states->remote = remote_get(name);
 861         if (!states->remote)
 862                 return error(_("No such remote: %s"), name);
 863
 864         read_branches();
 865
 866         if (query) {
 867                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 868                         states->remote->url[0] : NULL);
 869                 remote_refs = transport_get_remote_refs(transport, NULL);
 870                 transport_disconnect(transport);
 871
 872                 states->queried = 1;
 873                 if (query & GET_REF_STATES)
 874                         get_ref_states(remote_refs, states);
 875                 if (query & GET_HEAD_NAMES)
 876                         get_head_names(remote_refs, states);
 877                 if (query & GET_PUSH_REF_STATES)
 878                         get_push_ref_states(remote_refs, states);
 879         } else {
 880                 for_each_ref(append_ref_to_tracked_list, states);
 881                 string_list_sort(&states->tracked);
 882                 get_push_ref_states_noquery(states);
 883         }
 884
 885         return 0;
 886 }
 887
 888 struct show_info {
 889         struct string_list *list;
 890         struct ref_states *states;
 891         int width, width2;
 892         int any_rebase;
 893 };
 894
 895 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 896 {
 897         struct show_info *info = cb_data;
 898         int n = strlen(item->string);
 899         if (n > info->width)
 900                 info->width = n;
 901         string_list_insert(info->list, item->string);
 902         return 0;
 903 }
 904
 905 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 906 {
 907         struct show_info *info = cb_data;
 908         struct ref_states *states = info->states;
 909         const char *name = item->string;
 910
 911         if (states->queried) {
 912                 const char *fmt = "%s";
 913                 const char *arg = "";
 914                 if (string_list_has_string(&states->new_refs, name)) {
 915                         fmt = _(" new (next fetch will store in remotes/%s)");
 916                         arg = states->remote->name;
 917                 } else if (string_list_has_string(&states->tracked, name))
 918                         arg = _(" tracked");
 919                 else if (string_list_has_string(&states->stale, name))
 920                         arg = _(" stale (use 'git remote prune' to remove)");
 921                 else
 922                         arg = _(" ???");
 923                 printf("    %-*s", info->width, name);
 924                 printf(fmt, arg);
 925                 printf("\n");
 926         } else
 927                 printf("    %s\n", name);
 928
 929         return 0;
 930 }
 931
 932 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 933 {
 934         struct show_info *show_info = cb_data;
 935         struct ref_states *states = show_info->states;
 936         struct branch_info *branch_info = branch_item->util;
 937         struct string_list_item *item;
 938         int n;
 939
 940         if (!branch_info->merge.nr || !branch_info->remote_name ||
 941             strcmp(states->remote->name, branch_info->remote_name))
 942                 return 0;
 943         if ((n = strlen(branch_item->string)) > show_info->width)
 944                 show_info->width = n;
 945         if (branch_info->rebase)
 946                 show_info->any_rebase = 1;
 947
 948         item = string_list_insert(show_info->list, branch_item->string);
 949         item->util = branch_info;
 950
 951         return 0;
 952 }
 953
 954 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 955 {
 956         struct show_info *show_info = cb_data;
 957         struct branch_info *branch_info = item->util;
 958         struct string_list *merge = &branch_info->merge;
 959         int width = show_info->width + 4;
 960         int i;
 961
 962         if (branch_info->rebase && branch_info->merge.nr > 1) {
 963                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 964                         item->string);
 965                 return 0;
 966         }
 967
 968         printf("    %-*s ", show_info->width, item->string);
 969         if (branch_info->rebase) {
 970                 const char *msg;
 971                 if (branch_info->rebase == INTERACTIVE_REBASE)
 972                         msg = _("rebases interactively onto remote %s");
 973                 else if (branch_info->rebase == REBASE_MERGES)
 974                         msg = _("rebases interactively (with merges) onto "
 975                                 "remote %s");
 976                 else
 977                         msg = _("rebases onto remote %s");
 978                 printf_ln(msg, merge->items[0].string);
 979                 return 0;
 980         } else if (show_info->any_rebase) {
 981                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 982                 width++;
 983         } else {
 984                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 985         }
 986         for (i = 1; i < merge->nr; i++)
 987                 printf(_("%-*s    and with remote %s\n"), width, "",
 988                        merge->items[i].string);
 989
 990         return 0;
 991 }
 992
 993 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 994 {
 995         struct show_info *show_info = cb_data;
 996         struct push_info *push_info = push_item->util;
 997         struct string_list_item *item;
 998         int n;
 999         if ((n = strlen(push_item->string)) > show_info->width)
1000                 show_info->width = n;
1001         if ((n = strlen(push_info->dest)) > show_info->width2)
1002                 show_info->width2 = n;
1003         item = string_list_append(show_info->list, push_item->string);
1004         item->util = push_item->util;
1005         return 0;
1006 }
1007
1008 /*
1009  * Sorting comparison for a string list that has push_info
1010  * structs in its util field
1011  */
1012 static int cmp_string_with_push(const void *va, const void *vb)
1013 {
1014         const struct string_list_item *a = va;
1015         const struct string_list_item *b = vb;
1016         const struct push_info *a_push = a->util;
1017         const struct push_info *b_push = b->util;
1018         int cmp = strcmp(a->string, b->string);
1019         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1020 }
1021
1022 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1023 {
1024         struct show_info *show_info = cb_data;
1025         struct push_info *push_info = item->util;
1026         const char *src = item->string, *status = NULL;
1027
1028         switch (push_info->status) {
1029         case PUSH_STATUS_CREATE:
1030                 status = _("create");
1031                 break;
1032         case PUSH_STATUS_DELETE:
1033                 status = _("delete");
1034                 src = _("(none)");
1035                 break;
1036         case PUSH_STATUS_UPTODATE:
1037                 status = _("up to date");
1038                 break;
1039         case PUSH_STATUS_FASTFORWARD:
1040                 status = _("fast-forwardable");
1041                 break;
1042         case PUSH_STATUS_OUTOFDATE:
1043                 status = _("local out of date");
1044                 break;
1045         case PUSH_STATUS_NOTQUERIED:
1046                 break;
1047         }
1048         if (status) {
1049                 if (push_info->forced)
1050                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1051                                show_info->width2, push_info->dest, status);
1052                 else
1053                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1054                                show_info->width2, push_info->dest, status);
1055         } else {
1056                 if (push_info->forced)
1057                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1058                                push_info->dest);
1059                 else
1060                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1061                                push_info->dest);
1062         }
1063         return 0;
1064 }
1065
1066 static int get_one_entry(struct remote *remote, void *priv)
1067 {
1068         struct string_list *list = priv;
1069         struct strbuf url_buf = STRBUF_INIT;
1070         const char **url;
1071         int i, url_nr;
1072
1073         if (remote->url_nr > 0) {
1074                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1075                 string_list_append(list, remote->name)->util =
1076                                 strbuf_detach(&url_buf, NULL);
1077         } else
1078                 string_list_append(list, remote->name)->util = NULL;
1079         if (remote->pushurl_nr) {
1080                 url = remote->pushurl;
1081                 url_nr = remote->pushurl_nr;
1082         } else {
1083                 url = remote->url;
1084                 url_nr = remote->url_nr;
1085         }
1086         for (i = 0; i < url_nr; i++)
1087         {
1088                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1089                 string_list_append(list, remote->name)->util =
1090                                 strbuf_detach(&url_buf, NULL);
1091         }
1092
1093         return 0;
1094 }
1095
1096 static int show_all(void)
1097 {
1098         struct string_list list = STRING_LIST_INIT_NODUP;
1099         int result;
1100
1101         list.strdup_strings = 1;
1102         result = for_each_remote(get_one_entry, &list);
1103
1104         if (!result) {
1105                 int i;
1106
1107                 string_list_sort(&list);
1108                 for (i = 0; i < list.nr; i++) {
1109                         struct string_list_item *item = list.items + i;
1110                         if (verbose)
1111                                 printf("%s\t%s\n", item->string,
1112                                         item->util ? (const char *)item->util : "");
1113                         else {
1114                                 if (i && !strcmp((item - 1)->string, item->string))
1115                                         continue;
1116                                 printf("%s\n", item->string);
1117                         }
1118                 }
1119         }
1120         string_list_clear(&list, 1);
1121         return result;
1122 }
1123
1124 static int show(int argc, const char **argv)
1125 {
1126         int no_query = 0, result = 0, query_flag = 0;
1127         struct option options[] = {
1128                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1129                 OPT_END()
1130         };
1131         struct ref_states states;
1132         struct string_list info_list = STRING_LIST_INIT_NODUP;
1133         struct show_info info;
1134
1135         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1136                              0);
1137
1138         if (argc < 1)
1139                 return show_all();
1140
1141         if (!no_query)
1142                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1143
1144         memset(&states, 0, sizeof(states));
1145         memset(&info, 0, sizeof(info));
1146         info.states = &states;
1147         info.list = &info_list;
1148         for (; argc; argc--, argv++) {
1149                 int i;
1150                 const char **url;
1151                 int url_nr;
1152
1153                 get_remote_ref_states(*argv, &states, query_flag);
1154
1155                 printf_ln(_("* remote %s"), *argv);
1156                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1157                        states.remote->url[0] : _("(no URL)"));
1158                 if (states.remote->pushurl_nr) {
1159                         url = states.remote->pushurl;
1160                         url_nr = states.remote->pushurl_nr;
1161                 } else {
1162                         url = states.remote->url;
1163                         url_nr = states.remote->url_nr;
1164                 }
1165                 for (i = 0; i < url_nr; i++)
1166                         /*
1167                          * TRANSLATORS: the colon ':' should align
1168                          * with the one in " Fetch URL: %s"
1169                          * translation.
1170                          */
1171                         printf_ln(_("  Push  URL: %s"), url[i]);
1172                 if (!i)
1173                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1174                 if (no_query)
1175                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1176                 else if (!states.heads.nr)
1177                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1178                 else if (states.heads.nr == 1)
1179                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1180                 else {
1181                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1182                                  " may be one of the following):\n"));
1183                         for (i = 0; i < states.heads.nr; i++)
1184                                 printf("    %s\n", states.heads.items[i].string);
1185                 }
1186
1187                 /* remote branch info */
1188                 info.width = 0;
1189                 for_each_string_list(&states.new_refs, add_remote_to_show_info, &info);
1190                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1191                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1192                 if (info.list->nr)
1193                         printf_ln(Q_("  Remote branch:%s",
1194                                      "  Remote branches:%s",
1195                                      info.list->nr),
1196                                   no_query ? _(" (status not queried)") : "");
1197                 for_each_string_list(info.list, show_remote_info_item, &info);
1198                 string_list_clear(info.list, 0);
1199
1200                 /* git pull info */
1201                 info.width = 0;
1202                 info.any_rebase = 0;
1203                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1204                 if (info.list->nr)
1205                         printf_ln(Q_("  Local branch configured for 'git pull':",
1206                                      "  Local branches configured for 'git pull':",
1207                                      info.list->nr));
1208                 for_each_string_list(info.list, show_local_info_item, &info);
1209                 string_list_clear(info.list, 0);
1210
1211                 /* git push info */
1212                 if (states.remote->mirror)
1213                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1214
1215                 info.width = info.width2 = 0;
1216                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1217                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1218                 if (info.list->nr)
1219                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1220                                      "  Local refs configured for 'git push'%s:",
1221                                      info.list->nr),
1222                                   no_query ? _(" (status not queried)") : "");
1223                 for_each_string_list(info.list, show_push_info_item, &info);
1224                 string_list_clear(info.list, 0);
1225
1226                 free_remote_ref_states(&states);
1227         }
1228
1229         return result;
1230 }
1231
1232 static int set_head(int argc, const char **argv)
1233 {
1234         int i, opt_a = 0, opt_d = 0, result = 0;
1235         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1236         char *head_name = NULL;
1237
1238         struct option options[] = {
1239                 OPT_BOOL('a', "auto", &opt_a,
1240                          N_("set refs/remotes/<name>/HEAD according to remote")),
1241                 OPT_BOOL('d', "delete", &opt_d,
1242                          N_("delete refs/remotes/<name>/HEAD")),
1243                 OPT_END()
1244         };
1245         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1246                              0);
1247         if (argc)
1248                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1249
1250         if (!opt_a && !opt_d && argc == 2) {
1251                 head_name = xstrdup(argv[1]);
1252         } else if (opt_a && !opt_d && argc == 1) {
1253                 struct ref_states states;
1254                 memset(&states, 0, sizeof(states));
1255                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1256                 if (!states.heads.nr)
1257                         result |= error(_("Cannot determine remote HEAD"));
1258                 else if (states.heads.nr > 1) {
1259                         result |= error(_("Multiple remote HEAD branches. "
1260                                           "Please choose one explicitly with:"));
1261                         for (i = 0; i < states.heads.nr; i++)
1262                                 fprintf(stderr, "  git remote set-head %s %s\n",
1263                                         argv[0], states.heads.items[i].string);
1264                 } else
1265                         head_name = xstrdup(states.heads.items[0].string);
1266                 free_remote_ref_states(&states);
1267         } else if (opt_d && !opt_a && argc == 1) {
1268                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1269                         result |= error(_("Could not delete %s"), buf.buf);
1270         } else
1271                 usage_with_options(builtin_remote_sethead_usage, options);
1272
1273         if (head_name) {
1274                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1275                 /* make sure it's valid */
1276                 if (!ref_exists(buf2.buf))
1277                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1278                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1279                         result |= error(_("Could not setup %s"), buf.buf);
1280                 if (opt_a)
1281                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1282                 free(head_name);
1283         }
1284
1285         strbuf_release(&buf);
1286         strbuf_release(&buf2);
1287         return result;
1288 }
1289
1290 static int prune_remote(const char *remote, int dry_run)
1291 {
1292         int result = 0;
1293         struct ref_states states;
1294         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1295         struct string_list_item *item;
1296         const char *dangling_msg = dry_run
1297                 ? _(" %s will become dangling!")
1298                 : _(" %s has become dangling!");
1299
1300         memset(&states, 0, sizeof(states));
1301         get_remote_ref_states(remote, &states, GET_REF_STATES);
1302
1303         if (!states.stale.nr) {
1304                 free_remote_ref_states(&states);
1305                 return 0;
1306         }
1307
1308         printf_ln(_("Pruning %s"), remote);
1309         printf_ln(_("URL: %s"),
1310                   states.remote->url_nr
1311                   ? states.remote->url[0]
1312                   : _("(no URL)"));
1313
1314         for_each_string_list_item(item, &states.stale)
1315                 string_list_append(&refs_to_prune, item->util);
1316         string_list_sort(&refs_to_prune);
1317
1318         if (!dry_run)
1319                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1320
1321         for_each_string_list_item(item, &states.stale) {
1322                 const char *refname = item->util;
1323
1324                 if (dry_run)
1325                         printf_ln(_(" * [would prune] %s"),
1326                                abbrev_ref(refname, "refs/remotes/"));
1327                 else
1328                         printf_ln(_(" * [pruned] %s"),
1329                                abbrev_ref(refname, "refs/remotes/"));
1330         }
1331
1332         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1333
1334         string_list_clear(&refs_to_prune, 0);
1335         free_remote_ref_states(&states);
1336         return result;
1337 }
1338
1339 static int prune(int argc, const char **argv)
1340 {
1341         int dry_run = 0, result = 0;
1342         struct option options[] = {
1343                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1344                 OPT_END()
1345         };
1346
1347         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1348                              0);
1349
1350         if (argc < 1)
1351                 usage_with_options(builtin_remote_prune_usage, options);
1352
1353         for (; argc; argc--, argv++)
1354                 result |= prune_remote(*argv, dry_run);
1355
1356         return result;
1357 }
1358
1359 static int get_remote_default(const char *key, const char *value, void *priv)
1360 {
1361         if (strcmp(key, "remotes.default") == 0) {
1362                 int *found = priv;
1363                 *found = 1;
1364         }
1365         return 0;
1366 }
1367
1368 static int update(int argc, const char **argv)
1369 {
1370         int i, prune = -1;
1371         struct option options[] = {
1372                 OPT_BOOL('p', "prune", &prune,
1373                          N_("prune remotes after fetching")),
1374                 OPT_END()
1375         };
1376         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1377         int default_defined = 0;
1378         int retval;
1379
1380         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1381                              PARSE_OPT_KEEP_ARGV0);
1382
1383         argv_array_push(&fetch_argv, "fetch");
1384
1385         if (prune != -1)
1386                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1387         if (verbose)
1388                 argv_array_push(&fetch_argv, "-v");
1389         argv_array_push(&fetch_argv, "--multiple");
1390         if (argc < 2)
1391                 argv_array_push(&fetch_argv, "default");
1392         for (i = 1; i < argc; i++)
1393                 argv_array_push(&fetch_argv, argv[i]);
1394
1395         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1396                 git_config(get_remote_default, &default_defined);
1397                 if (!default_defined) {
1398                         argv_array_pop(&fetch_argv);
1399                         argv_array_push(&fetch_argv, "--all");
1400                 }
1401         }
1402
1403         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1404         argv_array_clear(&fetch_argv);
1405         return retval;
1406 }
1407
1408 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1409 {
1410         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1411 }
1412
1413 static void add_branches(struct remote *remote, const char **branches,
1414                          const char *key)
1415 {
1416         const char *remotename = remote->name;
1417         int mirror = remote->mirror;
1418         struct strbuf refspec = STRBUF_INIT;
1419
1420         for (; *branches; branches++)
1421                 add_branch(key, *branches, remotename, mirror, &refspec);
1422
1423         strbuf_release(&refspec);
1424 }
1425
1426 static int set_remote_branches(const char *remotename, const char **branches,
1427                                 int add_mode)
1428 {
1429         struct strbuf key = STRBUF_INIT;
1430         struct remote *remote;
1431
1432         strbuf_addf(&key, "remote.%s.fetch", remotename);
1433
1434         remote = remote_get(remotename);
1435         if (!remote_is_configured(remote, 1))
1436                 die(_("No such remote '%s'"), remotename);
1437
1438         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1439                 strbuf_release(&key);
1440                 return 1;
1441         }
1442         add_branches(remote, branches, key.buf);
1443
1444         strbuf_release(&key);
1445         return 0;
1446 }
1447
1448 static int set_branches(int argc, const char **argv)
1449 {
1450         int add_mode = 0;
1451         struct option options[] = {
1452                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1453                 OPT_END()
1454         };
1455
1456         argc = parse_options(argc, argv, NULL, options,
1457                              builtin_remote_setbranches_usage, 0);
1458         if (argc == 0) {
1459                 error(_("no remote specified"));
1460                 usage_with_options(builtin_remote_setbranches_usage, options);
1461         }
1462         argv[argc] = NULL;
1463
1464         return set_remote_branches(argv[0], argv + 1, add_mode);
1465 }
1466
1467 static int get_url(int argc, const char **argv)
1468 {
1469         int i, push_mode = 0, all_mode = 0;
1470         const char *remotename = NULL;
1471         struct remote *remote;
1472         const char **url;
1473         int url_nr;
1474         struct option options[] = {
1475                 OPT_BOOL('\0', "push", &push_mode,
1476                          N_("query push URLs rather than fetch URLs")),
1477                 OPT_BOOL('\0', "all", &all_mode,
1478                          N_("return all URLs")),
1479                 OPT_END()
1480         };
1481         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1482
1483         if (argc != 1)
1484                 usage_with_options(builtin_remote_geturl_usage, options);
1485
1486         remotename = argv[0];
1487
1488         remote = remote_get(remotename);
1489         if (!remote_is_configured(remote, 1))
1490                 die(_("No such remote '%s'"), remotename);
1491
1492         url_nr = 0;
1493         if (push_mode) {
1494                 url = remote->pushurl;
1495                 url_nr = remote->pushurl_nr;
1496         }
1497         /* else fetch mode */
1498
1499         /* Use the fetch URL when no push URLs were found or requested. */
1500         if (!url_nr) {
1501                 url = remote->url;
1502                 url_nr = remote->url_nr;
1503         }
1504
1505         if (!url_nr)
1506                 die(_("no URLs configured for remote '%s'"), remotename);
1507
1508         if (all_mode) {
1509                 for (i = 0; i < url_nr; i++)
1510                         printf_ln("%s", url[i]);
1511         } else {
1512                 printf_ln("%s", *url);
1513         }
1514
1515         return 0;
1516 }
1517
1518 static int set_url(int argc, const char **argv)
1519 {
1520         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1521         int matches = 0, negative_matches = 0;
1522         const char *remotename = NULL;
1523         const char *newurl = NULL;
1524         const char *oldurl = NULL;
1525         struct remote *remote;
1526         regex_t old_regex;
1527         const char **urlset;
1528         int urlset_nr;
1529         struct strbuf name_buf = STRBUF_INIT;
1530         struct option options[] = {
1531                 OPT_BOOL('\0', "push", &push_mode,
1532                          N_("manipulate push URLs")),
1533                 OPT_BOOL('\0', "add", &add_mode,
1534                          N_("add URL")),
1535                 OPT_BOOL('\0', "delete", &delete_mode,
1536                             N_("delete URLs")),
1537                 OPT_END()
1538         };
1539         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1540                              PARSE_OPT_KEEP_ARGV0);
1541
1542         if (add_mode && delete_mode)
1543                 die(_("--add --delete doesn't make sense"));
1544
1545         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1546                 usage_with_options(builtin_remote_seturl_usage, options);
1547
1548         remotename = argv[1];
1549         newurl = argv[2];
1550         if (argc > 3)
1551                 oldurl = argv[3];
1552
1553         if (delete_mode)
1554                 oldurl = newurl;
1555
1556         remote = remote_get(remotename);
1557         if (!remote_is_configured(remote, 1))
1558                 die(_("No such remote '%s'"), remotename);
1559
1560         if (push_mode) {
1561                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1562                 urlset = remote->pushurl;
1563                 urlset_nr = remote->pushurl_nr;
1564         } else {
1565                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1566                 urlset = remote->url;
1567                 urlset_nr = remote->url_nr;
1568         }
1569
1570         /* Special cases that add new entry. */
1571         if ((!oldurl && !delete_mode) || add_mode) {
1572                 if (add_mode)
1573                         git_config_set_multivar(name_buf.buf, newurl,
1574                                                        "^$", 0);
1575                 else
1576                         git_config_set(name_buf.buf, newurl);
1577                 goto out;
1578         }
1579
1580         /* Old URL specified. Demand that one matches. */
1581         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1582                 die(_("Invalid old URL pattern: %s"), oldurl);
1583
1584         for (i = 0; i < urlset_nr; i++)
1585                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1586                         matches++;
1587                 else
1588                         negative_matches++;
1589         if (!delete_mode && !matches)
1590                 die(_("No such URL found: %s"), oldurl);
1591         if (delete_mode && !negative_matches && !push_mode)
1592                 die(_("Will not delete all non-push URLs"));
1593
1594         regfree(&old_regex);
1595
1596         if (!delete_mode)
1597                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1598         else
1599                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1600 out:
1601         strbuf_release(&name_buf);
1602         return 0;
1603 }
1604
1605 int cmd_remote(int argc, const char **argv, const char *prefix)
1606 {
1607         struct option options[] = {
1608                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1609                 OPT_END()
1610         };
1611         int result;
1612
1613         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1614                 PARSE_OPT_STOP_AT_NON_OPTION);
1615
1616         if (argc < 1)
1617                 result = show_all();
1618         else if (!strcmp(argv[0], "add"))
1619                 result = add(argc, argv);
1620         else if (!strcmp(argv[0], "rename"))
1621                 result = mv(argc, argv);
1622         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1623                 result = rm(argc, argv);
1624         else if (!strcmp(argv[0], "set-head"))
1625                 result = set_head(argc, argv);
1626         else if (!strcmp(argv[0], "set-branches"))
1627                 result = set_branches(argc, argv);
1628         else if (!strcmp(argv[0], "get-url"))
1629                 result = get_url(argc, argv);
1630         else if (!strcmp(argv[0], "set-url"))
1631                 result = set_url(argc, argv);
1632         else if (!strcmp(argv[0], "show"))
1633                 result = show(argc, argv);
1634         else if (!strcmp(argv[0], "prune"))
1635                 result = prune(argc, argv);
1636         else if (!strcmp(argv[0], "update"))
1637                 result = update(argc, argv);
1638         else {
1639                 error(_("Unknown subcommand: %s"), argv[0]);
1640                 usage_with_options(builtin_remote_usage, options);
1641         }
1642
1643         return result ? 1 : 0;
1644 }