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 #include "commit-reach.h"
  14
  15 static const char * const builtin_remote_usage[] = {
  16         N_("git remote [-v | --verbose]"),
  17         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  18         N_("git remote rename <old> <new>"),
  19         N_("git remote remove <name>"),
  20         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  21         N_("git remote [-v | --verbose] show [-n] <name>"),
  22         N_("git remote prune [-n | --dry-run] <name>"),
  23         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  24         N_("git remote set-branches [--add] <name> <branch>..."),
  25         N_("git remote get-url [--push] [--all] <name>"),
  26         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  27         N_("git remote set-url --add <name> <newurl>"),
  28         N_("git remote set-url --delete <name> <url>"),
  29         NULL
  30 };
  31
  32 static const char * const builtin_remote_add_usage[] = {
  33         N_("git remote add [<options>] <name> <url>"),
  34         NULL
  35 };
  36
  37 static const char * const builtin_remote_rename_usage[] = {
  38         N_("git remote rename <old> <new>"),
  39         NULL
  40 };
  41
  42 static const char * const builtin_remote_rm_usage[] = {
  43         N_("git remote remove <name>"),
  44         NULL
  45 };
  46
  47 static const char * const builtin_remote_sethead_usage[] = {
  48         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  49         NULL
  50 };
  51
  52 static const char * const builtin_remote_setbranches_usage[] = {
  53         N_("git remote set-branches <name> <branch>..."),
  54         N_("git remote set-branches --add <name> <branch>..."),
  55         NULL
  56 };
  57
  58 static const char * const builtin_remote_show_usage[] = {
  59         N_("git remote show [<options>] <name>"),
  60         NULL
  61 };
  62
  63 static const char * const builtin_remote_prune_usage[] = {
  64         N_("git remote prune [<options>] <name>"),
  65         NULL
  66 };
  67
  68 static const char * const builtin_remote_update_usage[] = {
  69         N_("git remote update [<options>] [<group> | <remote>]..."),
  70         NULL
  71 };
  72
  73 static const char * const builtin_remote_geturl_usage[] = {
  74         N_("git remote get-url [--push] [--all] <name>"),
  75         NULL
  76 };
  77
  78 static const char * const builtin_remote_seturl_usage[] = {
  79         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  80         N_("git remote set-url --add <name> <newurl>"),
  81         N_("git remote set-url --delete <name> <url>"),
  82         NULL
  83 };
  84
  85 #define GET_REF_STATES (1<<0)
  86 #define GET_HEAD_NAMES (1<<1)
  87 #define GET_PUSH_REF_STATES (1<<2)
  88
  89 static int verbose;
  90
  91 static int fetch_remote(const char *name)
  92 {
  93         const char *argv[] = { "fetch", name, NULL, NULL };
  94         if (verbose) {
  95                 argv[1] = "-v";
  96                 argv[2] = name;
  97         }
  98         printf_ln(_("Updating %s"), name);
  99         if (run_command_v_opt(argv, RUN_GIT_CMD))
 100                 return error(_("Could not fetch %s"), name);
 101         return 0;
 102 }
 103
 104 enum {
 105         TAGS_UNSET = 0,
 106         TAGS_DEFAULT = 1,
 107         TAGS_SET = 2
 108 };
 109
 110 #define MIRROR_NONE 0
 111 #define MIRROR_FETCH 1
 112 #define MIRROR_PUSH 2
 113 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 114
 115 static void add_branch(const char *key, const char *branchname,
 116                        const char *remotename, int mirror, struct strbuf *tmp)
 117 {
 118         strbuf_reset(tmp);
 119         strbuf_addch(tmp, '+');
 120         if (mirror)
 121                 strbuf_addf(tmp, "refs/%s:refs/%s",
 122                                 branchname, branchname);
 123         else
 124                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 125                                 branchname, remotename, branchname);
 126         git_config_set_multivar(key, tmp->buf, "^$", 0);
 127 }
 128
 129 static const char mirror_advice[] =
 130 N_("--mirror is dangerous and deprecated; please\n"
 131    "\t use --mirror=fetch or --mirror=push instead");
 132
 133 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 134 {
 135         unsigned *mirror = opt->value;
 136         if (not)
 137                 *mirror = MIRROR_NONE;
 138         else if (!arg) {
 139                 warning("%s", _(mirror_advice));
 140                 *mirror = MIRROR_BOTH;
 141         }
 142         else if (!strcmp(arg, "fetch"))
 143                 *mirror = MIRROR_FETCH;
 144         else if (!strcmp(arg, "push"))
 145                 *mirror = MIRROR_PUSH;
 146         else
 147                 return error(_("unknown mirror argument: %s"), arg);
 148         return 0;
 149 }
 150
 151 static int add(int argc, const char **argv)
 152 {
 153         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 154         unsigned mirror = MIRROR_NONE;
 155         struct string_list track = STRING_LIST_INIT_NODUP;
 156         const char *master = NULL;
 157         struct remote *remote;
 158         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 159         const char *name, *url;
 160         int i;
 161
 162         struct option options[] = {
 163                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 164                 OPT_SET_INT(0, "tags", &fetch_tags,
 165                             N_("import all tags and associated objects when fetching"),
 166                             TAGS_SET),
 167                 OPT_SET_INT(0, NULL, &fetch_tags,
 168                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 169                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 170                                 N_("branch(es) to track")),
 171                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 172                 { OPTION_CALLBACK, 0, "mirror", &mirror, "(push|fetch)",
 173                         N_("set up remote as a mirror to push to or fetch from"),
 174                         PARSE_OPT_OPTARG | PARSE_OPT_COMP_ARG, parse_mirror_opt },
 175                 OPT_END()
 176         };
 177
 178         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 179                              0);
 180
 181         if (argc != 2)
 182                 usage_with_options(builtin_remote_add_usage, options);
 183
 184         if (mirror && master)
 185                 die(_("specifying a master branch makes no sense with --mirror"));
 186         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 187                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 188
 189         name = argv[0];
 190         url = argv[1];
 191
 192         remote = remote_get(name);
 193         if (remote_is_configured(remote, 1))
 194                 die(_("remote %s already exists."), name);
 195
 196         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 197         if (!valid_fetch_refspec(buf2.buf))
 198                 die(_("'%s' is not a valid remote name"), name);
 199
 200         strbuf_addf(&buf, "remote.%s.url", name);
 201         git_config_set(buf.buf, url);
 202
 203         if (!mirror || mirror & MIRROR_FETCH) {
 204                 strbuf_reset(&buf);
 205                 strbuf_addf(&buf, "remote.%s.fetch", name);
 206                 if (track.nr == 0)
 207                         string_list_append(&track, "*");
 208                 for (i = 0; i < track.nr; i++) {
 209                         add_branch(buf.buf, track.items[i].string,
 210                                    name, mirror, &buf2);
 211                 }
 212         }
 213
 214         if (mirror & MIRROR_PUSH) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "remote.%s.mirror", name);
 217                 git_config_set(buf.buf, "true");
 218         }
 219
 220         if (fetch_tags != TAGS_DEFAULT) {
 221                 strbuf_reset(&buf);
 222                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 223                 git_config_set(buf.buf,
 224                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 225         }
 226
 227         if (fetch && fetch_remote(name))
 228                 return 1;
 229
 230         if (master) {
 231                 strbuf_reset(&buf);
 232                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 233
 234                 strbuf_reset(&buf2);
 235                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 236
 237                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 238                         return error(_("Could not setup master '%s'"), master);
 239         }
 240
 241         strbuf_release(&buf);
 242         strbuf_release(&buf2);
 243         string_list_clear(&track, 0);
 244
 245         return 0;
 246 }
 247
 248 struct branch_info {
 249         char *remote_name;
 250         struct string_list merge;
 251         enum {
 252                 NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE, REBASE_MERGES
 253         } rebase;
 254 };
 255
 256 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
 257
 258 static const char *abbrev_ref(const char *name, const char *prefix)
 259 {
 260         skip_prefix(name, prefix, &name);
 261         return name;
 262 }
 263 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 264
 265 static int config_read_branches(const char *key, const char *value, void *cb)
 266 {
 267         if (starts_with(key, "branch.")) {
 268                 const char *orig_key = key;
 269                 char *name;
 270                 struct string_list_item *item;
 271                 struct branch_info *info;
 272                 enum { REMOTE, MERGE, REBASE } type;
 273                 size_t key_len;
 274
 275                 key += 7;
 276                 if (strip_suffix(key, ".remote", &key_len)) {
 277                         name = xmemdupz(key, key_len);
 278                         type = REMOTE;
 279                 } else if (strip_suffix(key, ".merge", &key_len)) {
 280                         name = xmemdupz(key, key_len);
 281                         type = MERGE;
 282                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 283                         name = xmemdupz(key, key_len);
 284                         type = REBASE;
 285                 } else
 286                         return 0;
 287
 288                 item = string_list_insert(&branch_list, name);
 289
 290                 if (!item->util)
 291                         item->util = xcalloc(1, sizeof(struct branch_info));
 292                 info = item->util;
 293                 if (type == REMOTE) {
 294                         if (info->remote_name)
 295                                 warning(_("more than one %s"), orig_key);
 296                         info->remote_name = xstrdup(value);
 297                 } else if (type == MERGE) {
 298                         char *space = strchr(value, ' ');
 299                         value = abbrev_branch(value);
 300                         while (space) {
 301                                 char *merge;
 302                                 merge = xstrndup(value, space - value);
 303                                 string_list_append(&info->merge, merge);
 304                                 value = abbrev_branch(space + 1);
 305                                 space = strchr(value, ' ');
 306                         }
 307                         string_list_append(&info->merge, xstrdup(value));
 308                 } else {
 309                         int v = git_parse_maybe_bool(value);
 310                         if (v >= 0)
 311                                 info->rebase = v;
 312                         else if (!strcmp(value, "preserve"))
 313                                 info->rebase = NORMAL_REBASE;
 314                         else if (!strcmp(value, "merges"))
 315                                 info->rebase = REBASE_MERGES;
 316                         else if (!strcmp(value, "interactive"))
 317                                 info->rebase = INTERACTIVE_REBASE;
 318                 }
 319         }
 320         return 0;
 321 }
 322
 323 static void read_branches(void)
 324 {
 325         if (branch_list.nr)
 326                 return;
 327         git_config(config_read_branches, NULL);
 328 }
 329
 330 struct ref_states {
 331         struct remote *remote;
 332         struct string_list new_refs, stale, tracked, heads, push;
 333         int queried;
 334 };
 335
 336 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 337 {
 338         struct ref *fetch_map = NULL, **tail = &fetch_map;
 339         struct ref *ref, *stale_refs;
 340         int i;
 341
 342         for (i = 0; i < states->remote->fetch.nr; i++)
 343                 if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
 344                         die(_("Could not get fetch map for refspec %s"),
 345                                 states->remote->fetch.raw[i]);
 346
 347         states->new_refs.strdup_strings = 1;
 348         states->tracked.strdup_strings = 1;
 349         states->stale.strdup_strings = 1;
 350         for (ref = fetch_map; ref; ref = ref->next) {
 351                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 352                         string_list_append(&states->new_refs, abbrev_branch(ref->name));
 353                 else
 354                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 355         }
 356         stale_refs = get_stale_heads(&states->remote->fetch, fetch_map);
 357         for (ref = stale_refs; ref; ref = ref->next) {
 358                 struct string_list_item *item =
 359                         string_list_append(&states->stale, abbrev_branch(ref->name));
 360                 item->util = xstrdup(ref->name);
 361         }
 362         free_refs(stale_refs);
 363         free_refs(fetch_map);
 364
 365         string_list_sort(&states->new_refs);
 366         string_list_sort(&states->tracked);
 367         string_list_sort(&states->stale);
 368
 369         return 0;
 370 }
 371
 372 struct push_info {
 373         char *dest;
 374         int forced;
 375         enum {
 376                 PUSH_STATUS_CREATE = 0,
 377                 PUSH_STATUS_DELETE,
 378                 PUSH_STATUS_UPTODATE,
 379                 PUSH_STATUS_FASTFORWARD,
 380                 PUSH_STATUS_OUTOFDATE,
 381                 PUSH_STATUS_NOTQUERIED
 382         } status;
 383 };
 384
 385 static int get_push_ref_states(const struct ref *remote_refs,
 386         struct ref_states *states)
 387 {
 388         struct remote *remote = states->remote;
 389         struct ref *ref, *local_refs, *push_map;
 390         if (remote->mirror)
 391                 return 0;
 392
 393         local_refs = get_local_heads();
 394         push_map = copy_ref_list(remote_refs);
 395
 396         match_push_refs(local_refs, &push_map, &remote->push, MATCH_REFS_NONE);
 397
 398         states->push.strdup_strings = 1;
 399         for (ref = push_map; ref; ref = ref->next) {
 400                 struct string_list_item *item;
 401                 struct push_info *info;
 402
 403                 if (!ref->peer_ref)
 404                         continue;
 405                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 406
 407                 item = string_list_append(&states->push,
 408                                           abbrev_branch(ref->peer_ref->name));
 409                 item->util = xcalloc(1, sizeof(struct push_info));
 410                 info = item->util;
 411                 info->forced = ref->force;
 412                 info->dest = xstrdup(abbrev_branch(ref->name));
 413
 414                 if (is_null_oid(&ref->new_oid)) {
 415                         info->status = PUSH_STATUS_DELETE;
 416                 } else if (oideq(&ref->old_oid, &ref->new_oid))
 417                         info->status = PUSH_STATUS_UPTODATE;
 418                 else if (is_null_oid(&ref->old_oid))
 419                         info->status = PUSH_STATUS_CREATE;
 420                 else if (has_object_file(&ref->old_oid) &&
 421                          ref_newer(&ref->new_oid, &ref->old_oid))
 422                         info->status = PUSH_STATUS_FASTFORWARD;
 423                 else
 424                         info->status = PUSH_STATUS_OUTOFDATE;
 425         }
 426         free_refs(local_refs);
 427         free_refs(push_map);
 428         return 0;
 429 }
 430
 431 static int get_push_ref_states_noquery(struct ref_states *states)
 432 {
 433         int i;
 434         struct remote *remote = states->remote;
 435         struct string_list_item *item;
 436         struct push_info *info;
 437
 438         if (remote->mirror)
 439                 return 0;
 440
 441         states->push.strdup_strings = 1;
 442         if (!remote->push.nr) {
 443                 item = string_list_append(&states->push, _("(matching)"));
 444                 info = item->util = xcalloc(1, sizeof(struct push_info));
 445                 info->status = PUSH_STATUS_NOTQUERIED;
 446                 info->dest = xstrdup(item->string);
 447         }
 448         for (i = 0; i < remote->push.nr; i++) {
 449                 const struct refspec_item *spec = &remote->push.items[i];
 450                 if (spec->matching)
 451                         item = string_list_append(&states->push, _("(matching)"));
 452                 else if (strlen(spec->src))
 453                         item = string_list_append(&states->push, spec->src);
 454                 else
 455                         item = string_list_append(&states->push, _("(delete)"));
 456
 457                 info = item->util = xcalloc(1, sizeof(struct push_info));
 458                 info->forced = spec->force;
 459                 info->status = PUSH_STATUS_NOTQUERIED;
 460                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 461         }
 462         return 0;
 463 }
 464
 465 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 466 {
 467         struct ref *ref, *matches;
 468         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 469         struct refspec_item refspec;
 470
 471         refspec.force = 0;
 472         refspec.pattern = 1;
 473         refspec.src = refspec.dst = "refs/heads/*";
 474         states->heads.strdup_strings = 1;
 475         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 476         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 477                                     fetch_map, 1);
 478         for (ref = matches; ref; ref = ref->next)
 479                 string_list_append(&states->heads, abbrev_branch(ref->name));
 480
 481         free_refs(fetch_map);
 482         free_refs(matches);
 483
 484         return 0;
 485 }
 486
 487 struct known_remote {
 488         struct known_remote *next;
 489         struct remote *remote;
 490 };
 491
 492 struct known_remotes {
 493         struct remote *to_delete;
 494         struct known_remote *list;
 495 };
 496
 497 static int add_known_remote(struct remote *remote, void *cb_data)
 498 {
 499         struct known_remotes *all = cb_data;
 500         struct known_remote *r;
 501
 502         if (!strcmp(all->to_delete->name, remote->name))
 503                 return 0;
 504
 505         r = xmalloc(sizeof(*r));
 506         r->remote = remote;
 507         r->next = all->list;
 508         all->list = r;
 509         return 0;
 510 }
 511
 512 struct branches_for_remote {
 513         struct remote *remote;
 514         struct string_list *branches, *skipped;
 515         struct known_remotes *keep;
 516 };
 517
 518 static int add_branch_for_removal(const char *refname,
 519         const struct object_id *oid, int flags, void *cb_data)
 520 {
 521         struct branches_for_remote *branches = cb_data;
 522         struct refspec_item refspec;
 523         struct known_remote *kr;
 524
 525         memset(&refspec, 0, sizeof(refspec));
 526         refspec.dst = (char *)refname;
 527         if (remote_find_tracking(branches->remote, &refspec))
 528                 return 0;
 529
 530         /* don't delete a branch if another remote also uses it */
 531         for (kr = branches->keep->list; kr; kr = kr->next) {
 532                 memset(&refspec, 0, sizeof(refspec));
 533                 refspec.dst = (char *)refname;
 534                 if (!remote_find_tracking(kr->remote, &refspec))
 535                         return 0;
 536         }
 537
 538         /* don't delete non-remote-tracking refs */
 539         if (!starts_with(refname, "refs/remotes/")) {
 540                 /* advise user how to delete local branches */
 541                 if (starts_with(refname, "refs/heads/"))
 542                         string_list_append(branches->skipped,
 543                                            abbrev_branch(refname));
 544                 /* silently skip over other non-remote refs */
 545                 return 0;
 546         }
 547
 548         string_list_append(branches->branches, refname);
 549
 550         return 0;
 551 }
 552
 553 struct rename_info {
 554         const char *old_name;
 555         const char *new_name;
 556         struct string_list *remote_branches;
 557 };
 558
 559 static int read_remote_branches(const char *refname,
 560         const struct object_id *oid, int flags, void *cb_data)
 561 {
 562         struct rename_info *rename = cb_data;
 563         struct strbuf buf = STRBUF_INIT;
 564         struct string_list_item *item;
 565         int flag;
 566         const char *symref;
 567
 568         strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
 569         if (starts_with(refname, buf.buf)) {
 570                 item = string_list_append(rename->remote_branches, refname);
 571                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 572                                             NULL, &flag);
 573                 if (symref && (flag & REF_ISSYMREF))
 574                         item->util = xstrdup(symref);
 575                 else
 576                         item->util = NULL;
 577         }
 578         strbuf_release(&buf);
 579
 580         return 0;
 581 }
 582
 583 static int migrate_file(struct remote *remote)
 584 {
 585         struct strbuf buf = STRBUF_INIT;
 586         int i;
 587
 588         strbuf_addf(&buf, "remote.%s.url", remote->name);
 589         for (i = 0; i < remote->url_nr; i++)
 590                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 591         strbuf_reset(&buf);
 592         strbuf_addf(&buf, "remote.%s.push", remote->name);
 593         for (i = 0; i < remote->push.raw_nr; i++)
 594                 git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
 595         strbuf_reset(&buf);
 596         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 597         for (i = 0; i < remote->fetch.raw_nr; i++)
 598                 git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
 599         if (remote->origin == REMOTE_REMOTES)
 600                 unlink_or_warn(git_path("remotes/%s", remote->name));
 601         else if (remote->origin == REMOTE_BRANCHES)
 602                 unlink_or_warn(git_path("branches/%s", remote->name));
 603         strbuf_release(&buf);
 604
 605         return 0;
 606 }
 607
 608 static int mv(int argc, const char **argv)
 609 {
 610         struct option options[] = {
 611                 OPT_END()
 612         };
 613         struct remote *oldremote, *newremote;
 614         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 615                 old_remote_context = STRBUF_INIT;
 616         struct string_list remote_branches = STRING_LIST_INIT_DUP;
 617         struct rename_info rename;
 618         int i, refspec_updated = 0;
 619
 620         if (argc != 3)
 621                 usage_with_options(builtin_remote_rename_usage, options);
 622
 623         rename.old_name = argv[1];
 624         rename.new_name = argv[2];
 625         rename.remote_branches = &remote_branches;
 626
 627         oldremote = remote_get(rename.old_name);
 628         if (!remote_is_configured(oldremote, 1))
 629                 die(_("No such remote: '%s'"), rename.old_name);
 630
 631         if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
 632                 return migrate_file(oldremote);
 633
 634         newremote = remote_get(rename.new_name);
 635         if (remote_is_configured(newremote, 1))
 636                 die(_("remote %s already exists."), rename.new_name);
 637
 638         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new_name);
 639         if (!valid_fetch_refspec(buf.buf))
 640                 die(_("'%s' is not a valid remote name"), rename.new_name);
 641
 642         strbuf_reset(&buf);
 643         strbuf_addf(&buf, "remote.%s", rename.old_name);
 644         strbuf_addf(&buf2, "remote.%s", rename.new_name);
 645         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 646                 return error(_("Could not rename config section '%s' to '%s'"),
 647                                 buf.buf, buf2.buf);
 648
 649         strbuf_reset(&buf);
 650         strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 651         git_config_set_multivar(buf.buf, NULL, NULL, 1);
 652         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 653         for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 654                 char *ptr;
 655
 656                 strbuf_reset(&buf2);
 657                 strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
 658                 ptr = strstr(buf2.buf, old_remote_context.buf);
 659                 if (ptr) {
 660                         refspec_updated = 1;
 661                         strbuf_splice(&buf2,
 662                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 663                                       strlen(rename.old_name), rename.new_name,
 664                                       strlen(rename.new_name));
 665                 } else
 666                         warning(_("Not updating non-default fetch refspec\n"
 667                                   "\t%s\n"
 668                                   "\tPlease update the configuration manually if necessary."),
 669                                 buf2.buf);
 670
 671                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 672         }
 673
 674         read_branches();
 675         for (i = 0; i < branch_list.nr; i++) {
 676                 struct string_list_item *item = branch_list.items + i;
 677                 struct branch_info *info = item->util;
 678                 if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
 679                         strbuf_reset(&buf);
 680                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 681                         git_config_set(buf.buf, rename.new_name);
 682                 }
 683         }
 684
 685         if (!refspec_updated)
 686                 return 0;
 687
 688         /*
 689          * First remove symrefs, then rename the rest, finally create
 690          * the new symrefs.
 691          */
 692         for_each_ref(read_remote_branches, &rename);
 693         for (i = 0; i < remote_branches.nr; i++) {
 694                 struct string_list_item *item = remote_branches.items + i;
 695                 int flag = 0;
 696                 struct object_id oid;
 697
 698                 read_ref_full(item->string, RESOLVE_REF_READING, &oid, &flag);
 699                 if (!(flag & REF_ISSYMREF))
 700                         continue;
 701                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
 702                         die(_("deleting '%s' failed"), item->string);
 703         }
 704         for (i = 0; i < remote_branches.nr; i++) {
 705                 struct string_list_item *item = remote_branches.items + i;
 706
 707                 if (item->util)
 708                         continue;
 709                 strbuf_reset(&buf);
 710                 strbuf_addstr(&buf, item->string);
 711                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 712                                 rename.new_name, strlen(rename.new_name));
 713                 strbuf_reset(&buf2);
 714                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 715                                 item->string, buf.buf);
 716                 if (rename_ref(item->string, buf.buf, buf2.buf))
 717                         die(_("renaming '%s' failed"), item->string);
 718         }
 719         for (i = 0; i < remote_branches.nr; i++) {
 720                 struct string_list_item *item = remote_branches.items + i;
 721
 722                 if (!item->util)
 723                         continue;
 724                 strbuf_reset(&buf);
 725                 strbuf_addstr(&buf, item->string);
 726                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 727                                 rename.new_name, strlen(rename.new_name));
 728                 strbuf_reset(&buf2);
 729                 strbuf_addstr(&buf2, item->util);
 730                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
 731                                 rename.new_name, strlen(rename.new_name));
 732                 strbuf_reset(&buf3);
 733                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 734                                 item->string, buf.buf);
 735                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 736                         die(_("creating '%s' failed"), buf.buf);
 737         }
 738         string_list_clear(&remote_branches, 1);
 739         return 0;
 740 }
 741
 742 static int rm(int argc, const char **argv)
 743 {
 744         struct option options[] = {
 745                 OPT_END()
 746         };
 747         struct remote *remote;
 748         struct strbuf buf = STRBUF_INIT;
 749         struct known_remotes known_remotes = { NULL, NULL };
 750         struct string_list branches = STRING_LIST_INIT_DUP;
 751         struct string_list skipped = STRING_LIST_INIT_DUP;
 752         struct branches_for_remote cb_data;
 753         int i, result;
 754
 755         memset(&cb_data, 0, sizeof(cb_data));
 756         cb_data.branches = &branches;
 757         cb_data.skipped = &skipped;
 758         cb_data.keep = &known_remotes;
 759
 760         if (argc != 2)
 761                 usage_with_options(builtin_remote_rm_usage, options);
 762
 763         remote = remote_get(argv[1]);
 764         if (!remote_is_configured(remote, 1))
 765                 die(_("No such remote: '%s'"), argv[1]);
 766
 767         known_remotes.to_delete = remote;
 768         for_each_remote(add_known_remote, &known_remotes);
 769
 770         read_branches();
 771         for (i = 0; i < branch_list.nr; i++) {
 772                 struct string_list_item *item = branch_list.items + i;
 773                 struct branch_info *info = item->util;
 774                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 775                         const char *keys[] = { "remote", "merge", NULL }, **k;
 776                         for (k = keys; *k; k++) {
 777                                 strbuf_reset(&buf);
 778                                 strbuf_addf(&buf, "branch.%s.%s",
 779                                                 item->string, *k);
 780                                 result = git_config_set_gently(buf.buf, NULL);
 781                                 if (result && result != CONFIG_NOTHING_SET)
 782                                         die(_("could not unset '%s'"), buf.buf);
 783                         }
 784                 }
 785         }
 786
 787         /*
 788          * We cannot just pass a function to for_each_ref() which deletes
 789          * the branches one by one, since for_each_ref() relies on cached
 790          * refs, which are invalidated when deleting a branch.
 791          */
 792         cb_data.remote = remote;
 793         result = for_each_ref(add_branch_for_removal, &cb_data);
 794         strbuf_release(&buf);
 795
 796         if (!result)
 797                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
 798         string_list_clear(&branches, 0);
 799
 800         if (skipped.nr) {
 801                 fprintf_ln(stderr,
 802                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 803                               "to delete it, use:",
 804                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 805                               "to delete them, use:",
 806                               skipped.nr));
 807                 for (i = 0; i < skipped.nr; i++)
 808                         fprintf(stderr, "  git branch -d %s\n",
 809                                 skipped.items[i].string);
 810         }
 811         string_list_clear(&skipped, 0);
 812
 813         if (!result) {
 814                 strbuf_addf(&buf, "remote.%s", remote->name);
 815                 if (git_config_rename_section(buf.buf, NULL) < 1)
 816                         return error(_("Could not remove config section '%s'"), buf.buf);
 817         }
 818
 819         return result;
 820 }
 821
 822 static void clear_push_info(void *util, const char *string)
 823 {
 824         struct push_info *info = util;
 825         free(info->dest);
 826         free(info);
 827 }
 828
 829 static void free_remote_ref_states(struct ref_states *states)
 830 {
 831         string_list_clear(&states->new_refs, 0);
 832         string_list_clear(&states->stale, 1);
 833         string_list_clear(&states->tracked, 0);
 834         string_list_clear(&states->heads, 0);
 835         string_list_clear_func(&states->push, clear_push_info);
 836 }
 837
 838 static int append_ref_to_tracked_list(const char *refname,
 839         const struct object_id *oid, int flags, void *cb_data)
 840 {
 841         struct ref_states *states = cb_data;
 842         struct refspec_item refspec;
 843
 844         if (flags & REF_ISSYMREF)
 845                 return 0;
 846
 847         memset(&refspec, 0, sizeof(refspec));
 848         refspec.dst = (char *)refname;
 849         if (!remote_find_tracking(states->remote, &refspec))
 850                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 851
 852         return 0;
 853 }
 854
 855 static int get_remote_ref_states(const char *name,
 856                                  struct ref_states *states,
 857                                  int query)
 858 {
 859         struct transport *transport;
 860         const struct ref *remote_refs;
 861
 862         states->remote = remote_get(name);
 863         if (!states->remote)
 864                 return error(_("No such remote: '%s'"), name);
 865
 866         read_branches();
 867
 868         if (query) {
 869                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 870                         states->remote->url[0] : NULL);
 871                 remote_refs = transport_get_remote_refs(transport, NULL);
 872                 transport_disconnect(transport);
 873
 874                 states->queried = 1;
 875                 if (query & GET_REF_STATES)
 876                         get_ref_states(remote_refs, states);
 877                 if (query & GET_HEAD_NAMES)
 878                         get_head_names(remote_refs, states);
 879                 if (query & GET_PUSH_REF_STATES)
 880                         get_push_ref_states(remote_refs, states);
 881         } else {
 882                 for_each_ref(append_ref_to_tracked_list, states);
 883                 string_list_sort(&states->tracked);
 884                 get_push_ref_states_noquery(states);
 885         }
 886
 887         return 0;
 888 }
 889
 890 struct show_info {
 891         struct string_list *list;
 892         struct ref_states *states;
 893         int width, width2;
 894         int any_rebase;
 895 };
 896
 897 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 898 {
 899         struct show_info *info = cb_data;
 900         int n = strlen(item->string);
 901         if (n > info->width)
 902                 info->width = n;
 903         string_list_insert(info->list, item->string);
 904         return 0;
 905 }
 906
 907 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 908 {
 909         struct show_info *info = cb_data;
 910         struct ref_states *states = info->states;
 911         const char *name = item->string;
 912
 913         if (states->queried) {
 914                 const char *fmt = "%s";
 915                 const char *arg = "";
 916                 if (string_list_has_string(&states->new_refs, name)) {
 917                         fmt = _(" new (next fetch will store in remotes/%s)");
 918                         arg = states->remote->name;
 919                 } else if (string_list_has_string(&states->tracked, name))
 920                         arg = _(" tracked");
 921                 else if (string_list_has_string(&states->stale, name))
 922                         arg = _(" stale (use 'git remote prune' to remove)");
 923                 else
 924                         arg = _(" ???");
 925                 printf("    %-*s", info->width, name);
 926                 printf(fmt, arg);
 927                 printf("\n");
 928         } else
 929                 printf("    %s\n", name);
 930
 931         return 0;
 932 }
 933
 934 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 935 {
 936         struct show_info *show_info = cb_data;
 937         struct ref_states *states = show_info->states;
 938         struct branch_info *branch_info = branch_item->util;
 939         struct string_list_item *item;
 940         int n;
 941
 942         if (!branch_info->merge.nr || !branch_info->remote_name ||
 943             strcmp(states->remote->name, branch_info->remote_name))
 944                 return 0;
 945         if ((n = strlen(branch_item->string)) > show_info->width)
 946                 show_info->width = n;
 947         if (branch_info->rebase)
 948                 show_info->any_rebase = 1;
 949
 950         item = string_list_insert(show_info->list, branch_item->string);
 951         item->util = branch_info;
 952
 953         return 0;
 954 }
 955
 956 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 957 {
 958         struct show_info *show_info = cb_data;
 959         struct branch_info *branch_info = item->util;
 960         struct string_list *merge = &branch_info->merge;
 961         int width = show_info->width + 4;
 962         int i;
 963
 964         if (branch_info->rebase && branch_info->merge.nr > 1) {
 965                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 966                         item->string);
 967                 return 0;
 968         }
 969
 970         printf("    %-*s ", show_info->width, item->string);
 971         if (branch_info->rebase) {
 972                 const char *msg;
 973                 if (branch_info->rebase == INTERACTIVE_REBASE)
 974                         msg = _("rebases interactively onto remote %s");
 975                 else if (branch_info->rebase == REBASE_MERGES)
 976                         msg = _("rebases interactively (with merges) onto "
 977                                 "remote %s");
 978                 else
 979                         msg = _("rebases onto remote %s");
 980                 printf_ln(msg, merge->items[0].string);
 981                 return 0;
 982         } else if (show_info->any_rebase) {
 983                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 984                 width++;
 985         } else {
 986                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 987         }
 988         for (i = 1; i < merge->nr; i++)
 989                 printf(_("%-*s    and with remote %s\n"), width, "",
 990                        merge->items[i].string);
 991
 992         return 0;
 993 }
 994
 995 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 996 {
 997         struct show_info *show_info = cb_data;
 998         struct push_info *push_info = push_item->util;
 999         struct string_list_item *item;
1000         int n;
1001         if ((n = strlen(push_item->string)) > show_info->width)
1002                 show_info->width = n;
1003         if ((n = strlen(push_info->dest)) > show_info->width2)
1004                 show_info->width2 = n;
1005         item = string_list_append(show_info->list, push_item->string);
1006         item->util = push_item->util;
1007         return 0;
1008 }
1009
1010 /*
1011  * Sorting comparison for a string list that has push_info
1012  * structs in its util field
1013  */
1014 static int cmp_string_with_push(const void *va, const void *vb)
1015 {
1016         const struct string_list_item *a = va;
1017         const struct string_list_item *b = vb;
1018         const struct push_info *a_push = a->util;
1019         const struct push_info *b_push = b->util;
1020         int cmp = strcmp(a->string, b->string);
1021         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1022 }
1023
1024 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1025 {
1026         struct show_info *show_info = cb_data;
1027         struct push_info *push_info = item->util;
1028         const char *src = item->string, *status = NULL;
1029
1030         switch (push_info->status) {
1031         case PUSH_STATUS_CREATE:
1032                 status = _("create");
1033                 break;
1034         case PUSH_STATUS_DELETE:
1035                 status = _("delete");
1036                 src = _("(none)");
1037                 break;
1038         case PUSH_STATUS_UPTODATE:
1039                 status = _("up to date");
1040                 break;
1041         case PUSH_STATUS_FASTFORWARD:
1042                 status = _("fast-forwardable");
1043                 break;
1044         case PUSH_STATUS_OUTOFDATE:
1045                 status = _("local out of date");
1046                 break;
1047         case PUSH_STATUS_NOTQUERIED:
1048                 break;
1049         }
1050         if (status) {
1051                 if (push_info->forced)
1052                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1053                                show_info->width2, push_info->dest, status);
1054                 else
1055                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1056                                show_info->width2, push_info->dest, status);
1057         } else {
1058                 if (push_info->forced)
1059                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1060                                push_info->dest);
1061                 else
1062                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1063                                push_info->dest);
1064         }
1065         return 0;
1066 }
1067
1068 static int get_one_entry(struct remote *remote, void *priv)
1069 {
1070         struct string_list *list = priv;
1071         struct strbuf url_buf = STRBUF_INIT;
1072         const char **url;
1073         int i, url_nr;
1074
1075         if (remote->url_nr > 0) {
1076                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1077                 string_list_append(list, remote->name)->util =
1078                                 strbuf_detach(&url_buf, NULL);
1079         } else
1080                 string_list_append(list, remote->name)->util = NULL;
1081         if (remote->pushurl_nr) {
1082                 url = remote->pushurl;
1083                 url_nr = remote->pushurl_nr;
1084         } else {
1085                 url = remote->url;
1086                 url_nr = remote->url_nr;
1087         }
1088         for (i = 0; i < url_nr; i++)
1089         {
1090                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1091                 string_list_append(list, remote->name)->util =
1092                                 strbuf_detach(&url_buf, NULL);
1093         }
1094
1095         return 0;
1096 }
1097
1098 static int show_all(void)
1099 {
1100         struct string_list list = STRING_LIST_INIT_NODUP;
1101         int result;
1102
1103         list.strdup_strings = 1;
1104         result = for_each_remote(get_one_entry, &list);
1105
1106         if (!result) {
1107                 int i;
1108
1109                 string_list_sort(&list);
1110                 for (i = 0; i < list.nr; i++) {
1111                         struct string_list_item *item = list.items + i;
1112                         if (verbose)
1113                                 printf("%s\t%s\n", item->string,
1114                                         item->util ? (const char *)item->util : "");
1115                         else {
1116                                 if (i && !strcmp((item - 1)->string, item->string))
1117                                         continue;
1118                                 printf("%s\n", item->string);
1119                         }
1120                 }
1121         }
1122         string_list_clear(&list, 1);
1123         return result;
1124 }
1125
1126 static int show(int argc, const char **argv)
1127 {
1128         int no_query = 0, result = 0, query_flag = 0;
1129         struct option options[] = {
1130                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1131                 OPT_END()
1132         };
1133         struct ref_states states;
1134         struct string_list info_list = STRING_LIST_INIT_NODUP;
1135         struct show_info info;
1136
1137         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1138                              0);
1139
1140         if (argc < 1)
1141                 return show_all();
1142
1143         if (!no_query)
1144                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1145
1146         memset(&states, 0, sizeof(states));
1147         memset(&info, 0, sizeof(info));
1148         info.states = &states;
1149         info.list = &info_list;
1150         for (; argc; argc--, argv++) {
1151                 int i;
1152                 const char **url;
1153                 int url_nr;
1154
1155                 get_remote_ref_states(*argv, &states, query_flag);
1156
1157                 printf_ln(_("* remote %s"), *argv);
1158                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1159                        states.remote->url[0] : _("(no URL)"));
1160                 if (states.remote->pushurl_nr) {
1161                         url = states.remote->pushurl;
1162                         url_nr = states.remote->pushurl_nr;
1163                 } else {
1164                         url = states.remote->url;
1165                         url_nr = states.remote->url_nr;
1166                 }
1167                 for (i = 0; i < url_nr; i++)
1168                         /*
1169                          * TRANSLATORS: the colon ':' should align
1170                          * with the one in " Fetch URL: %s"
1171                          * translation.
1172                          */
1173                         printf_ln(_("  Push  URL: %s"), url[i]);
1174                 if (!i)
1175                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1176                 if (no_query)
1177                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1178                 else if (!states.heads.nr)
1179                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1180                 else if (states.heads.nr == 1)
1181                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1182                 else {
1183                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1184                                  " may be one of the following):\n"));
1185                         for (i = 0; i < states.heads.nr; i++)
1186                                 printf("    %s\n", states.heads.items[i].string);
1187                 }
1188
1189                 /* remote branch info */
1190                 info.width = 0;
1191                 for_each_string_list(&states.new_refs, add_remote_to_show_info, &info);
1192                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1193                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1194                 if (info.list->nr)
1195                         printf_ln(Q_("  Remote branch:%s",
1196                                      "  Remote branches:%s",
1197                                      info.list->nr),
1198                                   no_query ? _(" (status not queried)") : "");
1199                 for_each_string_list(info.list, show_remote_info_item, &info);
1200                 string_list_clear(info.list, 0);
1201
1202                 /* git pull info */
1203                 info.width = 0;
1204                 info.any_rebase = 0;
1205                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1206                 if (info.list->nr)
1207                         printf_ln(Q_("  Local branch configured for 'git pull':",
1208                                      "  Local branches configured for 'git pull':",
1209                                      info.list->nr));
1210                 for_each_string_list(info.list, show_local_info_item, &info);
1211                 string_list_clear(info.list, 0);
1212
1213                 /* git push info */
1214                 if (states.remote->mirror)
1215                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1216
1217                 info.width = info.width2 = 0;
1218                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1219                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1220                 if (info.list->nr)
1221                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1222                                      "  Local refs configured for 'git push'%s:",
1223                                      info.list->nr),
1224                                   no_query ? _(" (status not queried)") : "");
1225                 for_each_string_list(info.list, show_push_info_item, &info);
1226                 string_list_clear(info.list, 0);
1227
1228                 free_remote_ref_states(&states);
1229         }
1230
1231         return result;
1232 }
1233
1234 static int set_head(int argc, const char **argv)
1235 {
1236         int i, opt_a = 0, opt_d = 0, result = 0;
1237         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1238         char *head_name = NULL;
1239
1240         struct option options[] = {
1241                 OPT_BOOL('a', "auto", &opt_a,
1242                          N_("set refs/remotes/<name>/HEAD according to remote")),
1243                 OPT_BOOL('d', "delete", &opt_d,
1244                          N_("delete refs/remotes/<name>/HEAD")),
1245                 OPT_END()
1246         };
1247         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1248                              0);
1249         if (argc)
1250                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1251
1252         if (!opt_a && !opt_d && argc == 2) {
1253                 head_name = xstrdup(argv[1]);
1254         } else if (opt_a && !opt_d && argc == 1) {
1255                 struct ref_states states;
1256                 memset(&states, 0, sizeof(states));
1257                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1258                 if (!states.heads.nr)
1259                         result |= error(_("Cannot determine remote HEAD"));
1260                 else if (states.heads.nr > 1) {
1261                         result |= error(_("Multiple remote HEAD branches. "
1262                                           "Please choose one explicitly with:"));
1263                         for (i = 0; i < states.heads.nr; i++)
1264                                 fprintf(stderr, "  git remote set-head %s %s\n",
1265                                         argv[0], states.heads.items[i].string);
1266                 } else
1267                         head_name = xstrdup(states.heads.items[0].string);
1268                 free_remote_ref_states(&states);
1269         } else if (opt_d && !opt_a && argc == 1) {
1270                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1271                         result |= error(_("Could not delete %s"), buf.buf);
1272         } else
1273                 usage_with_options(builtin_remote_sethead_usage, options);
1274
1275         if (head_name) {
1276                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1277                 /* make sure it's valid */
1278                 if (!ref_exists(buf2.buf))
1279                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1280                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1281                         result |= error(_("Could not setup %s"), buf.buf);
1282                 if (opt_a)
1283                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1284                 free(head_name);
1285         }
1286
1287         strbuf_release(&buf);
1288         strbuf_release(&buf2);
1289         return result;
1290 }
1291
1292 static int prune_remote(const char *remote, int dry_run)
1293 {
1294         int result = 0;
1295         struct ref_states states;
1296         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1297         struct string_list_item *item;
1298         const char *dangling_msg = dry_run
1299                 ? _(" %s will become dangling!")
1300                 : _(" %s has become dangling!");
1301
1302         memset(&states, 0, sizeof(states));
1303         get_remote_ref_states(remote, &states, GET_REF_STATES);
1304
1305         if (!states.stale.nr) {
1306                 free_remote_ref_states(&states);
1307                 return 0;
1308         }
1309
1310         printf_ln(_("Pruning %s"), remote);
1311         printf_ln(_("URL: %s"),
1312                   states.remote->url_nr
1313                   ? states.remote->url[0]
1314                   : _("(no URL)"));
1315
1316         for_each_string_list_item(item, &states.stale)
1317                 string_list_append(&refs_to_prune, item->util);
1318         string_list_sort(&refs_to_prune);
1319
1320         if (!dry_run)
1321                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1322
1323         for_each_string_list_item(item, &states.stale) {
1324                 const char *refname = item->util;
1325
1326                 if (dry_run)
1327                         printf_ln(_(" * [would prune] %s"),
1328                                abbrev_ref(refname, "refs/remotes/"));
1329                 else
1330                         printf_ln(_(" * [pruned] %s"),
1331                                abbrev_ref(refname, "refs/remotes/"));
1332         }
1333
1334         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1335
1336         string_list_clear(&refs_to_prune, 0);
1337         free_remote_ref_states(&states);
1338         return result;
1339 }
1340
1341 static int prune(int argc, const char **argv)
1342 {
1343         int dry_run = 0, result = 0;
1344         struct option options[] = {
1345                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1346                 OPT_END()
1347         };
1348
1349         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1350                              0);
1351
1352         if (argc < 1)
1353                 usage_with_options(builtin_remote_prune_usage, options);
1354
1355         for (; argc; argc--, argv++)
1356                 result |= prune_remote(*argv, dry_run);
1357
1358         return result;
1359 }
1360
1361 static int get_remote_default(const char *key, const char *value, void *priv)
1362 {
1363         if (strcmp(key, "remotes.default") == 0) {
1364                 int *found = priv;
1365                 *found = 1;
1366         }
1367         return 0;
1368 }
1369
1370 static int update(int argc, const char **argv)
1371 {
1372         int i, prune = -1;
1373         struct option options[] = {
1374                 OPT_BOOL('p', "prune", &prune,
1375                          N_("prune remotes after fetching")),
1376                 OPT_END()
1377         };
1378         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1379         int default_defined = 0;
1380         int retval;
1381
1382         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1383                              PARSE_OPT_KEEP_ARGV0);
1384
1385         argv_array_push(&fetch_argv, "fetch");
1386
1387         if (prune != -1)
1388                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1389         if (verbose)
1390                 argv_array_push(&fetch_argv, "-v");
1391         argv_array_push(&fetch_argv, "--multiple");
1392         if (argc < 2)
1393                 argv_array_push(&fetch_argv, "default");
1394         for (i = 1; i < argc; i++)
1395                 argv_array_push(&fetch_argv, argv[i]);
1396
1397         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1398                 git_config(get_remote_default, &default_defined);
1399                 if (!default_defined) {
1400                         argv_array_pop(&fetch_argv);
1401                         argv_array_push(&fetch_argv, "--all");
1402                 }
1403         }
1404
1405         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1406         argv_array_clear(&fetch_argv);
1407         return retval;
1408 }
1409
1410 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1411 {
1412         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1413 }
1414
1415 static void add_branches(struct remote *remote, const char **branches,
1416                          const char *key)
1417 {
1418         const char *remotename = remote->name;
1419         int mirror = remote->mirror;
1420         struct strbuf refspec = STRBUF_INIT;
1421
1422         for (; *branches; branches++)
1423                 add_branch(key, *branches, remotename, mirror, &refspec);
1424
1425         strbuf_release(&refspec);
1426 }
1427
1428 static int set_remote_branches(const char *remotename, const char **branches,
1429                                 int add_mode)
1430 {
1431         struct strbuf key = STRBUF_INIT;
1432         struct remote *remote;
1433
1434         strbuf_addf(&key, "remote.%s.fetch", remotename);
1435
1436         remote = remote_get(remotename);
1437         if (!remote_is_configured(remote, 1))
1438                 die(_("No such remote '%s'"), remotename);
1439
1440         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1441                 strbuf_release(&key);
1442                 return 1;
1443         }
1444         add_branches(remote, branches, key.buf);
1445
1446         strbuf_release(&key);
1447         return 0;
1448 }
1449
1450 static int set_branches(int argc, const char **argv)
1451 {
1452         int add_mode = 0;
1453         struct option options[] = {
1454                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1455                 OPT_END()
1456         };
1457
1458         argc = parse_options(argc, argv, NULL, options,
1459                              builtin_remote_setbranches_usage, 0);
1460         if (argc == 0) {
1461                 error(_("no remote specified"));
1462                 usage_with_options(builtin_remote_setbranches_usage, options);
1463         }
1464         argv[argc] = NULL;
1465
1466         return set_remote_branches(argv[0], argv + 1, add_mode);
1467 }
1468
1469 static int get_url(int argc, const char **argv)
1470 {
1471         int i, push_mode = 0, all_mode = 0;
1472         const char *remotename = NULL;
1473         struct remote *remote;
1474         const char **url;
1475         int url_nr;
1476         struct option options[] = {
1477                 OPT_BOOL('\0', "push", &push_mode,
1478                          N_("query push URLs rather than fetch URLs")),
1479                 OPT_BOOL('\0', "all", &all_mode,
1480                          N_("return all URLs")),
1481                 OPT_END()
1482         };
1483         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1484
1485         if (argc != 1)
1486                 usage_with_options(builtin_remote_geturl_usage, options);
1487
1488         remotename = argv[0];
1489
1490         remote = remote_get(remotename);
1491         if (!remote_is_configured(remote, 1))
1492                 die(_("No such remote '%s'"), remotename);
1493
1494         url_nr = 0;
1495         if (push_mode) {
1496                 url = remote->pushurl;
1497                 url_nr = remote->pushurl_nr;
1498         }
1499         /* else fetch mode */
1500
1501         /* Use the fetch URL when no push URLs were found or requested. */
1502         if (!url_nr) {
1503                 url = remote->url;
1504                 url_nr = remote->url_nr;
1505         }
1506
1507         if (!url_nr)
1508                 die(_("no URLs configured for remote '%s'"), remotename);
1509
1510         if (all_mode) {
1511                 for (i = 0; i < url_nr; i++)
1512                         printf_ln("%s", url[i]);
1513         } else {
1514                 printf_ln("%s", *url);
1515         }
1516
1517         return 0;
1518 }
1519
1520 static int set_url(int argc, const char **argv)
1521 {
1522         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1523         int matches = 0, negative_matches = 0;
1524         const char *remotename = NULL;
1525         const char *newurl = NULL;
1526         const char *oldurl = NULL;
1527         struct remote *remote;
1528         regex_t old_regex;
1529         const char **urlset;
1530         int urlset_nr;
1531         struct strbuf name_buf = STRBUF_INIT;
1532         struct option options[] = {
1533                 OPT_BOOL('\0', "push", &push_mode,
1534                          N_("manipulate push URLs")),
1535                 OPT_BOOL('\0', "add", &add_mode,
1536                          N_("add URL")),
1537                 OPT_BOOL('\0', "delete", &delete_mode,
1538                             N_("delete URLs")),
1539                 OPT_END()
1540         };
1541         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1542                              PARSE_OPT_KEEP_ARGV0);
1543
1544         if (add_mode && delete_mode)
1545                 die(_("--add --delete doesn't make sense"));
1546
1547         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1548                 usage_with_options(builtin_remote_seturl_usage, options);
1549
1550         remotename = argv[1];
1551         newurl = argv[2];
1552         if (argc > 3)
1553                 oldurl = argv[3];
1554
1555         if (delete_mode)
1556                 oldurl = newurl;
1557
1558         remote = remote_get(remotename);
1559         if (!remote_is_configured(remote, 1))
1560                 die(_("No such remote '%s'"), remotename);
1561
1562         if (push_mode) {
1563                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1564                 urlset = remote->pushurl;
1565                 urlset_nr = remote->pushurl_nr;
1566         } else {
1567                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1568                 urlset = remote->url;
1569                 urlset_nr = remote->url_nr;
1570         }
1571
1572         /* Special cases that add new entry. */
1573         if ((!oldurl && !delete_mode) || add_mode) {
1574                 if (add_mode)
1575                         git_config_set_multivar(name_buf.buf, newurl,
1576                                                        "^$", 0);
1577                 else
1578                         git_config_set(name_buf.buf, newurl);
1579                 goto out;
1580         }
1581
1582         /* Old URL specified. Demand that one matches. */
1583         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1584                 die(_("Invalid old URL pattern: %s"), oldurl);
1585
1586         for (i = 0; i < urlset_nr; i++)
1587                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1588                         matches++;
1589                 else
1590                         negative_matches++;
1591         if (!delete_mode && !matches)
1592                 die(_("No such URL found: %s"), oldurl);
1593         if (delete_mode && !negative_matches && !push_mode)
1594                 die(_("Will not delete all non-push URLs"));
1595
1596         regfree(&old_regex);
1597
1598         if (!delete_mode)
1599                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1600         else
1601                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1602 out:
1603         strbuf_release(&name_buf);
1604         return 0;
1605 }
1606
1607 int cmd_remote(int argc, const char **argv, const char *prefix)
1608 {
1609         struct option options[] = {
1610                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1611                 OPT_END()
1612         };
1613         int result;
1614
1615         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1616                 PARSE_OPT_STOP_AT_NON_OPTION);
1617
1618         if (argc < 1)
1619                 result = show_all();
1620         else if (!strcmp(argv[0], "add"))
1621                 result = add(argc, argv);
1622         else if (!strcmp(argv[0], "rename"))
1623                 result = mv(argc, argv);
1624         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1625                 result = rm(argc, argv);
1626         else if (!strcmp(argv[0], "set-head"))
1627                 result = set_head(argc, argv);
1628         else if (!strcmp(argv[0], "set-branches"))
1629                 result = set_branches(argc, argv);
1630         else if (!strcmp(argv[0], "get-url"))
1631                 result = get_url(argc, argv);
1632         else if (!strcmp(argv[0], "set-url"))
1633                 result = set_url(argc, argv);
1634         else if (!strcmp(argv[0], "show"))
1635                 result = show(argc, argv);
1636         else if (!strcmp(argv[0], "prune"))
1637                 result = prune(argc, argv);
1638         else if (!strcmp(argv[0], "update"))
1639                 result = update(argc, argv);
1640         else {
1641                 error(_("Unknown subcommand: %s"), argv[0]);
1642                 usage_with_options(builtin_remote_usage, options);
1643         }
1644
1645         return result ? 1 : 0;
1646 }