builtin/remote.c

   1 #include "builtin.h"
   2 #include "parse-options.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5 #include "string-list.h"
   6 #include "strbuf.h"
   7 #include "run-command.h"
   8 #include "refs.h"
   9 #include "argv-array.h"
  10
  11 static const char * const builtin_remote_usage[] = {
  12         N_("git remote [-v | --verbose]"),
  13         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  14         N_("git remote rename <old> <new>"),
  15         N_("git remote remove <name>"),
  16         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  17         N_("git remote [-v | --verbose] show [-n] <name>"),
  18         N_("git remote prune [-n | --dry-run] <name>"),
  19         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  20         N_("git remote set-branches [--add] <name> <branch>..."),
  21         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  22         N_("git remote set-url --add <name> <newurl>"),
  23         N_("git remote set-url --delete <name> <url>"),
  24         NULL
  25 };
  26
  27 static const char * const builtin_remote_add_usage[] = {
  28         N_("git remote add [<options>] <name> <url>"),
  29         NULL
  30 };
  31
  32 static const char * const builtin_remote_rename_usage[] = {
  33         N_("git remote rename <old> <new>"),
  34         NULL
  35 };
  36
  37 static const char * const builtin_remote_rm_usage[] = {
  38         N_("git remote remove <name>"),
  39         NULL
  40 };
  41
  42 static const char * const builtin_remote_sethead_usage[] = {
  43         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  44         NULL
  45 };
  46
  47 static const char * const builtin_remote_setbranches_usage[] = {
  48         N_("git remote set-branches <name> <branch>..."),
  49         N_("git remote set-branches --add <name> <branch>..."),
  50         NULL
  51 };
  52
  53 static const char * const builtin_remote_show_usage[] = {
  54         N_("git remote show [<options>] <name>"),
  55         NULL
  56 };
  57
  58 static const char * const builtin_remote_prune_usage[] = {
  59         N_("git remote prune [<options>] <name>"),
  60         NULL
  61 };
  62
  63 static const char * const builtin_remote_update_usage[] = {
  64         N_("git remote update [<options>] [<group> | <remote>]..."),
  65         NULL
  66 };
  67
  68 static const char * const builtin_remote_seturl_usage[] = {
  69         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  70         N_("git remote set-url --add <name> <newurl>"),
  71         N_("git remote set-url --delete <name> <url>"),
  72         NULL
  73 };
  74
  75 #define GET_REF_STATES (1<<0)
  76 #define GET_HEAD_NAMES (1<<1)
  77 #define GET_PUSH_REF_STATES (1<<2)
  78
  79 static int verbose;
  80
  81 static int fetch_remote(const char *name)
  82 {
  83         const char *argv[] = { "fetch", name, NULL, NULL };
  84         if (verbose) {
  85                 argv[1] = "-v";
  86                 argv[2] = name;
  87         }
  88         printf_ln(_("Updating %s"), name);
  89         if (run_command_v_opt(argv, RUN_GIT_CMD))
  90                 return error(_("Could not fetch %s"), name);
  91         return 0;
  92 }
  93
  94 enum {
  95         TAGS_UNSET = 0,
  96         TAGS_DEFAULT = 1,
  97         TAGS_SET = 2
  98 };
  99
 100 #define MIRROR_NONE 0
 101 #define MIRROR_FETCH 1
 102 #define MIRROR_PUSH 2
 103 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 104
 105 static int add_branch(const char *key, const char *branchname,
 106                 const char *remotename, int mirror, struct strbuf *tmp)
 107 {
 108         strbuf_reset(tmp);
 109         strbuf_addch(tmp, '+');
 110         if (mirror)
 111                 strbuf_addf(tmp, "refs/%s:refs/%s",
 112                                 branchname, branchname);
 113         else
 114                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 115                                 branchname, remotename, branchname);
 116         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 117 }
 118
 119 static const char mirror_advice[] =
 120 N_("--mirror is dangerous and deprecated; please\n"
 121    "\t use --mirror=fetch or --mirror=push instead");
 122
 123 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 124 {
 125         unsigned *mirror = opt->value;
 126         if (not)
 127                 *mirror = MIRROR_NONE;
 128         else if (!arg) {
 129                 warning("%s", _(mirror_advice));
 130                 *mirror = MIRROR_BOTH;
 131         }
 132         else if (!strcmp(arg, "fetch"))
 133                 *mirror = MIRROR_FETCH;
 134         else if (!strcmp(arg, "push"))
 135                 *mirror = MIRROR_PUSH;
 136         else
 137                 return error(_("unknown mirror argument: %s"), arg);
 138         return 0;
 139 }
 140
 141 static int add(int argc, const char **argv)
 142 {
 143         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 144         unsigned mirror = MIRROR_NONE;
 145         struct string_list track = STRING_LIST_INIT_NODUP;
 146         const char *master = NULL;
 147         struct remote *remote;
 148         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 149         const char *name, *url;
 150         int i;
 151
 152         struct option options[] = {
 153                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 154                 OPT_SET_INT(0, "tags", &fetch_tags,
 155                             N_("import all tags and associated objects when fetching"),
 156                             TAGS_SET),
 157                 OPT_SET_INT(0, NULL, &fetch_tags,
 158                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 159                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 160                                 N_("branch(es) to track")),
 161                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 162                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 163                         N_("set up remote as a mirror to push to or fetch from"),
 164                         PARSE_OPT_OPTARG, parse_mirror_opt },
 165                 OPT_END()
 166         };
 167
 168         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 169                              0);
 170
 171         if (argc != 2)
 172                 usage_with_options(builtin_remote_add_usage, options);
 173
 174         if (mirror && master)
 175                 die(_("specifying a master branch makes no sense with --mirror"));
 176         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 177                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 178
 179         name = argv[0];
 180         url = argv[1];
 181
 182         remote = remote_get(name);
 183         if (remote && (remote->url_nr > 1 ||
 184                         (strcmp(name, remote->url[0]) &&
 185                                 strcmp(url, remote->url[0])) ||
 186                         remote->fetch_refspec_nr))
 187                 die(_("remote %s already exists."), name);
 188
 189         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 190         if (!valid_fetch_refspec(buf2.buf))
 191                 die(_("'%s' is not a valid remote name"), name);
 192
 193         strbuf_addf(&buf, "remote.%s.url", name);
 194         if (git_config_set(buf.buf, url))
 195                 return 1;
 196
 197         if (!mirror || mirror & MIRROR_FETCH) {
 198                 strbuf_reset(&buf);
 199                 strbuf_addf(&buf, "remote.%s.fetch", name);
 200                 if (track.nr == 0)
 201                         string_list_append(&track, "*");
 202                 for (i = 0; i < track.nr; i++) {
 203                         if (add_branch(buf.buf, track.items[i].string,
 204                                        name, mirror, &buf2))
 205                                 return 1;
 206                 }
 207         }
 208
 209         if (mirror & MIRROR_PUSH) {
 210                 strbuf_reset(&buf);
 211                 strbuf_addf(&buf, "remote.%s.mirror", name);
 212                 if (git_config_set(buf.buf, "true"))
 213                         return 1;
 214         }
 215
 216         if (fetch_tags != TAGS_DEFAULT) {
 217                 strbuf_reset(&buf);
 218                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 219                 if (git_config_set(buf.buf,
 220                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 221                         return 1;
 222         }
 223
 224         if (fetch && fetch_remote(name))
 225                 return 1;
 226
 227         if (master) {
 228                 strbuf_reset(&buf);
 229                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 230
 231                 strbuf_reset(&buf2);
 232                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 233
 234                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 235                         return error(_("Could not setup master '%s'"), master);
 236         }
 237
 238         strbuf_release(&buf);
 239         strbuf_release(&buf2);
 240         string_list_clear(&track, 0);
 241
 242         return 0;
 243 }
 244
 245 struct branch_info {
 246         char *remote_name;
 247         struct string_list merge;
 248         int rebase;
 249 };
 250
 251 static struct string_list branch_list;
 252
 253 static const char *abbrev_ref(const char *name, const char *prefix)
 254 {
 255         skip_prefix(name, prefix, &name);
 256         return name;
 257 }
 258 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 259
 260 static int config_read_branches(const char *key, const char *value, void *cb)
 261 {
 262         if (starts_with(key, "branch.")) {
 263                 const char *orig_key = key;
 264                 char *name;
 265                 struct string_list_item *item;
 266                 struct branch_info *info;
 267                 enum { REMOTE, MERGE, REBASE } type;
 268                 size_t key_len;
 269
 270                 key += 7;
 271                 if (strip_suffix(key, ".remote", &key_len)) {
 272                         name = xmemdupz(key, key_len);
 273                         type = REMOTE;
 274                 } else if (strip_suffix(key, ".merge", &key_len)) {
 275                         name = xmemdupz(key, key_len);
 276                         type = MERGE;
 277                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 278                         name = xmemdupz(key, key_len);
 279                         type = REBASE;
 280                 } else
 281                         return 0;
 282
 283                 item = string_list_insert(&branch_list, name);
 284
 285                 if (!item->util)
 286                         item->util = xcalloc(1, sizeof(struct branch_info));
 287                 info = item->util;
 288                 if (type == REMOTE) {
 289                         if (info->remote_name)
 290                                 warning(_("more than one %s"), orig_key);
 291                         info->remote_name = xstrdup(value);
 292                 } else if (type == MERGE) {
 293                         char *space = strchr(value, ' ');
 294                         value = abbrev_branch(value);
 295                         while (space) {
 296                                 char *merge;
 297                                 merge = xstrndup(value, space - value);
 298                                 string_list_append(&info->merge, merge);
 299                                 value = abbrev_branch(space + 1);
 300                                 space = strchr(value, ' ');
 301                         }
 302                         string_list_append(&info->merge, xstrdup(value));
 303                 } else {
 304                         int v = git_config_maybe_bool(orig_key, value);
 305                         if (v >= 0)
 306                                 info->rebase = v;
 307                         else if (!strcmp(value, "preserve"))
 308                                 info->rebase = 1;
 309                 }
 310         }
 311         return 0;
 312 }
 313
 314 static void read_branches(void)
 315 {
 316         if (branch_list.nr)
 317                 return;
 318         git_config(config_read_branches, NULL);
 319 }
 320
 321 struct ref_states {
 322         struct remote *remote;
 323         struct string_list new, stale, tracked, heads, push;
 324         int queried;
 325 };
 326
 327 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 328 {
 329         struct ref *fetch_map = NULL, **tail = &fetch_map;
 330         struct ref *ref, *stale_refs;
 331         int i;
 332
 333         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 334                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 335                         die(_("Could not get fetch map for refspec %s"),
 336                                 states->remote->fetch_refspec[i]);
 337
 338         states->new.strdup_strings = 1;
 339         states->tracked.strdup_strings = 1;
 340         states->stale.strdup_strings = 1;
 341         for (ref = fetch_map; ref; ref = ref->next) {
 342                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 343                         string_list_append(&states->new, abbrev_branch(ref->name));
 344                 else
 345                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 346         }
 347         stale_refs = get_stale_heads(states->remote->fetch,
 348                                      states->remote->fetch_refspec_nr, fetch_map);
 349         for (ref = stale_refs; ref; ref = ref->next) {
 350                 struct string_list_item *item =
 351                         string_list_append(&states->stale, abbrev_branch(ref->name));
 352                 item->util = xstrdup(ref->name);
 353         }
 354         free_refs(stale_refs);
 355         free_refs(fetch_map);
 356
 357         string_list_sort(&states->new);
 358         string_list_sort(&states->tracked);
 359         string_list_sort(&states->stale);
 360
 361         return 0;
 362 }
 363
 364 struct push_info {
 365         char *dest;
 366         int forced;
 367         enum {
 368                 PUSH_STATUS_CREATE = 0,
 369                 PUSH_STATUS_DELETE,
 370                 PUSH_STATUS_UPTODATE,
 371                 PUSH_STATUS_FASTFORWARD,
 372                 PUSH_STATUS_OUTOFDATE,
 373                 PUSH_STATUS_NOTQUERIED
 374         } status;
 375 };
 376
 377 static int get_push_ref_states(const struct ref *remote_refs,
 378         struct ref_states *states)
 379 {
 380         struct remote *remote = states->remote;
 381         struct ref *ref, *local_refs, *push_map;
 382         if (remote->mirror)
 383                 return 0;
 384
 385         local_refs = get_local_heads();
 386         push_map = copy_ref_list(remote_refs);
 387
 388         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 389                         remote->push_refspec, MATCH_REFS_NONE);
 390
 391         states->push.strdup_strings = 1;
 392         for (ref = push_map; ref; ref = ref->next) {
 393                 struct string_list_item *item;
 394                 struct push_info *info;
 395
 396                 if (!ref->peer_ref)
 397                         continue;
 398                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 399
 400                 item = string_list_append(&states->push,
 401                                           abbrev_branch(ref->peer_ref->name));
 402                 item->util = xcalloc(1, sizeof(struct push_info));
 403                 info = item->util;
 404                 info->forced = ref->force;
 405                 info->dest = xstrdup(abbrev_branch(ref->name));
 406
 407                 if (is_null_sha1(ref->new_sha1)) {
 408                         info->status = PUSH_STATUS_DELETE;
 409                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 410                         info->status = PUSH_STATUS_UPTODATE;
 411                 else if (is_null_sha1(ref->old_sha1))
 412                         info->status = PUSH_STATUS_CREATE;
 413                 else if (has_sha1_file(ref->old_sha1) &&
 414                          ref_newer(ref->new_sha1, ref->old_sha1))
 415                         info->status = PUSH_STATUS_FASTFORWARD;
 416                 else
 417                         info->status = PUSH_STATUS_OUTOFDATE;
 418         }
 419         free_refs(local_refs);
 420         free_refs(push_map);
 421         return 0;
 422 }
 423
 424 static int get_push_ref_states_noquery(struct ref_states *states)
 425 {
 426         int i;
 427         struct remote *remote = states->remote;
 428         struct string_list_item *item;
 429         struct push_info *info;
 430
 431         if (remote->mirror)
 432                 return 0;
 433
 434         states->push.strdup_strings = 1;
 435         if (!remote->push_refspec_nr) {
 436                 item = string_list_append(&states->push, _("(matching)"));
 437                 info = item->util = xcalloc(1, sizeof(struct push_info));
 438                 info->status = PUSH_STATUS_NOTQUERIED;
 439                 info->dest = xstrdup(item->string);
 440         }
 441         for (i = 0; i < remote->push_refspec_nr; i++) {
 442                 struct refspec *spec = remote->push + i;
 443                 if (spec->matching)
 444                         item = string_list_append(&states->push, _("(matching)"));
 445                 else if (strlen(spec->src))
 446                         item = string_list_append(&states->push, spec->src);
 447                 else
 448                         item = string_list_append(&states->push, _("(delete)"));
 449
 450                 info = item->util = xcalloc(1, sizeof(struct push_info));
 451                 info->forced = spec->force;
 452                 info->status = PUSH_STATUS_NOTQUERIED;
 453                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 454         }
 455         return 0;
 456 }
 457
 458 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 459 {
 460         struct ref *ref, *matches;
 461         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 462         struct refspec refspec;
 463
 464         refspec.force = 0;
 465         refspec.pattern = 1;
 466         refspec.src = refspec.dst = "refs/heads/*";
 467         states->heads.strdup_strings = 1;
 468         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 469         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 470                                     fetch_map, 1);
 471         for (ref = matches; ref; ref = ref->next)
 472                 string_list_append(&states->heads, abbrev_branch(ref->name));
 473
 474         free_refs(fetch_map);
 475         free_refs(matches);
 476
 477         return 0;
 478 }
 479
 480 struct known_remote {
 481         struct known_remote *next;
 482         struct remote *remote;
 483 };
 484
 485 struct known_remotes {
 486         struct remote *to_delete;
 487         struct known_remote *list;
 488 };
 489
 490 static int add_known_remote(struct remote *remote, void *cb_data)
 491 {
 492         struct known_remotes *all = cb_data;
 493         struct known_remote *r;
 494
 495         if (!strcmp(all->to_delete->name, remote->name))
 496                 return 0;
 497
 498         r = xmalloc(sizeof(*r));
 499         r->remote = remote;
 500         r->next = all->list;
 501         all->list = r;
 502         return 0;
 503 }
 504
 505 struct branches_for_remote {
 506         struct remote *remote;
 507         struct string_list *branches, *skipped;
 508         struct known_remotes *keep;
 509 };
 510
 511 static int add_branch_for_removal(const char *refname,
 512         const struct object_id *oid, int flags, void *cb_data)
 513 {
 514         struct branches_for_remote *branches = cb_data;
 515         struct refspec refspec;
 516         struct known_remote *kr;
 517
 518         memset(&refspec, 0, sizeof(refspec));
 519         refspec.dst = (char *)refname;
 520         if (remote_find_tracking(branches->remote, &refspec))
 521                 return 0;
 522
 523         /* don't delete a branch if another remote also uses it */
 524         for (kr = branches->keep->list; kr; kr = kr->next) {
 525                 memset(&refspec, 0, sizeof(refspec));
 526                 refspec.dst = (char *)refname;
 527                 if (!remote_find_tracking(kr->remote, &refspec))
 528                         return 0;
 529         }
 530
 531         /* don't delete non-remote-tracking refs */
 532         if (!starts_with(refname, "refs/remotes/")) {
 533                 /* advise user how to delete local branches */
 534                 if (starts_with(refname, "refs/heads/"))
 535                         string_list_append(branches->skipped,
 536                                            abbrev_branch(refname));
 537                 /* silently skip over other non-remote refs */
 538                 return 0;
 539         }
 540
 541         /* make sure that symrefs are deleted */
 542         if (flags & REF_ISSYMREF)
 543                 return unlink(git_path("%s", refname));
 544
 545         string_list_append(branches->branches, refname);
 546
 547         return 0;
 548 }
 549
 550 struct rename_info {
 551         const char *old;
 552         const char *new;
 553         struct string_list *remote_branches;
 554 };
 555
 556 static int read_remote_branches(const char *refname,
 557         const struct object_id *oid, int flags, void *cb_data)
 558 {
 559         struct rename_info *rename = cb_data;
 560         struct strbuf buf = STRBUF_INIT;
 561         struct string_list_item *item;
 562         int flag;
 563         struct object_id orig_oid;
 564         const char *symref;
 565
 566         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 567         if (starts_with(refname, buf.buf)) {
 568                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 569                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 570                                             orig_oid.hash, &flag);
 571                 if (flag & REF_ISSYMREF)
 572                         item->util = xstrdup(symref);
 573                 else
 574                         item->util = NULL;
 575         }
 576
 577         return 0;
 578 }
 579
 580 static int migrate_file(struct remote *remote)
 581 {
 582         struct strbuf buf = STRBUF_INIT;
 583         int i;
 584
 585         strbuf_addf(&buf, "remote.%s.url", remote->name);
 586         for (i = 0; i < remote->url_nr; i++)
 587                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 588                         return error(_("Could not append '%s' to '%s'"),
 589                                         remote->url[i], buf.buf);
 590         strbuf_reset(&buf);
 591         strbuf_addf(&buf, "remote.%s.push", remote->name);
 592         for (i = 0; i < remote->push_refspec_nr; i++)
 593                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 594                         return error(_("Could not append '%s' to '%s'"),
 595                                         remote->push_refspec[i], buf.buf);
 596         strbuf_reset(&buf);
 597         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 598         for (i = 0; i < remote->fetch_refspec_nr; i++)
 599                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 600                         return error(_("Could not append '%s' to '%s'"),
 601                                         remote->fetch_refspec[i], buf.buf);
 602         if (remote->origin == REMOTE_REMOTES)
 603                 unlink_or_warn(git_path("remotes/%s", remote->name));
 604         else if (remote->origin == REMOTE_BRANCHES)
 605                 unlink_or_warn(git_path("branches/%s", remote->name));
 606         return 0;
 607 }
 608
 609 static int mv(int argc, const char **argv)
 610 {
 611         struct option options[] = {
 612                 OPT_END()
 613         };
 614         struct remote *oldremote, *newremote;
 615         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 616                 old_remote_context = STRBUF_INIT;
 617         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 618         struct rename_info rename;
 619         int i, refspec_updated = 0;
 620
 621         if (argc != 3)
 622                 usage_with_options(builtin_remote_rename_usage, options);
 623
 624         rename.old = argv[1];
 625         rename.new = argv[2];
 626         rename.remote_branches = &remote_branches;
 627
 628         oldremote = remote_get(rename.old);
 629         if (!oldremote)
 630                 die(_("No such remote: %s"), rename.old);
 631
 632         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 633                 return migrate_file(oldremote);
 634
 635         newremote = remote_get(rename.new);
 636         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 637                 die(_("remote %s already exists."), rename.new);
 638
 639         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 640         if (!valid_fetch_refspec(buf.buf))
 641                 die(_("'%s' is not a valid remote name"), rename.new);
 642
 643         strbuf_reset(&buf);
 644         strbuf_addf(&buf, "remote.%s", rename.old);
 645         strbuf_addf(&buf2, "remote.%s", rename.new);
 646         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 647                 return error(_("Could not rename config section '%s' to '%s'"),
 648                                 buf.buf, buf2.buf);
 649
 650         strbuf_reset(&buf);
 651         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 652         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 653                 return error(_("Could not remove config section '%s'"), buf.buf);
 654         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 655         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 656                 char *ptr;
 657
 658                 strbuf_reset(&buf2);
 659                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 660                 ptr = strstr(buf2.buf, old_remote_context.buf);
 661                 if (ptr) {
 662                         refspec_updated = 1;
 663                         strbuf_splice(&buf2,
 664                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 665                                       strlen(rename.old), rename.new,
 666                                       strlen(rename.new));
 667                 } else
 668                         warning(_("Not updating non-default fetch refspec\n"
 669                                   "\t%s\n"
 670                                   "\tPlease update the configuration manually if necessary."),
 671                                 buf2.buf);
 672
 673                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 674                         return error(_("Could not append '%s'"), buf.buf);
 675         }
 676
 677         read_branches();
 678         for (i = 0; i < branch_list.nr; i++) {
 679                 struct string_list_item *item = branch_list.items + i;
 680                 struct branch_info *info = item->util;
 681                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 682                         strbuf_reset(&buf);
 683                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 684                         if (git_config_set(buf.buf, rename.new)) {
 685                                 return error(_("Could not set '%s'"), buf.buf);
 686                         }
 687                 }
 688         }
 689
 690         if (!refspec_updated)
 691                 return 0;
 692
 693         /*
 694          * First remove symrefs, then rename the rest, finally create
 695          * the new symrefs.
 696          */
 697         for_each_ref(read_remote_branches, &rename);
 698         for (i = 0; i < remote_branches.nr; i++) {
 699                 struct string_list_item *item = remote_branches.items + i;
 700                 int flag = 0;
 701                 struct object_id oid;
 702
 703                 read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 704                 if (!(flag & REF_ISSYMREF))
 705                         continue;
 706                 if (delete_ref(item->string, NULL, REF_NODEREF))
 707                         die(_("deleting '%s' failed"), item->string);
 708         }
 709         for (i = 0; i < remote_branches.nr; i++) {
 710                 struct string_list_item *item = remote_branches.items + i;
 711
 712                 if (item->util)
 713                         continue;
 714                 strbuf_reset(&buf);
 715                 strbuf_addstr(&buf, item->string);
 716                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 717                                 rename.new, strlen(rename.new));
 718                 strbuf_reset(&buf2);
 719                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 720                                 item->string, buf.buf);
 721                 if (rename_ref(item->string, buf.buf, buf2.buf))
 722                         die(_("renaming '%s' failed"), item->string);
 723         }
 724         for (i = 0; i < remote_branches.nr; i++) {
 725                 struct string_list_item *item = remote_branches.items + i;
 726
 727                 if (!item->util)
 728                         continue;
 729                 strbuf_reset(&buf);
 730                 strbuf_addstr(&buf, item->string);
 731                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 732                                 rename.new, strlen(rename.new));
 733                 strbuf_reset(&buf2);
 734                 strbuf_addstr(&buf2, item->util);
 735                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 736                                 rename.new, strlen(rename.new));
 737                 strbuf_reset(&buf3);
 738                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 739                                 item->string, buf.buf);
 740                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 741                         die(_("creating '%s' failed"), buf.buf);
 742         }
 743         return 0;
 744 }
 745
 746 static int rm(int argc, const char **argv)
 747 {
 748         struct option options[] = {
 749                 OPT_END()
 750         };
 751         struct remote *remote;
 752         struct strbuf buf = STRBUF_INIT;
 753         struct known_remotes known_remotes = { NULL, NULL };
 754         struct string_list branches = STRING_LIST_INIT_DUP;
 755         struct string_list skipped = STRING_LIST_INIT_DUP;
 756         struct branches_for_remote cb_data;
 757         int i, result;
 758
 759         memset(&cb_data, 0, sizeof(cb_data));
 760         cb_data.branches = &branches;
 761         cb_data.skipped = &skipped;
 762         cb_data.keep = &known_remotes;
 763
 764         if (argc != 2)
 765                 usage_with_options(builtin_remote_rm_usage, options);
 766
 767         remote = remote_get(argv[1]);
 768         if (!remote)
 769                 die(_("No such remote: %s"), argv[1]);
 770
 771         known_remotes.to_delete = remote;
 772         for_each_remote(add_known_remote, &known_remotes);
 773
 774         read_branches();
 775         for (i = 0; i < branch_list.nr; i++) {
 776                 struct string_list_item *item = branch_list.items + i;
 777                 struct branch_info *info = item->util;
 778                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 779                         const char *keys[] = { "remote", "merge", NULL }, **k;
 780                         for (k = keys; *k; k++) {
 781                                 strbuf_reset(&buf);
 782                                 strbuf_addf(&buf, "branch.%s.%s",
 783                                                 item->string, *k);
 784                                 if (git_config_set(buf.buf, NULL)) {
 785                                         strbuf_release(&buf);
 786                                         return -1;
 787                                 }
 788                         }
 789                 }
 790         }
 791
 792         /*
 793          * We cannot just pass a function to for_each_ref() which deletes
 794          * the branches one by one, since for_each_ref() relies on cached
 795          * refs, which are invalidated when deleting a branch.
 796          */
 797         cb_data.remote = remote;
 798         result = for_each_ref(add_branch_for_removal, &cb_data);
 799         strbuf_release(&buf);
 800
 801         if (!result)
 802                 result = delete_refs(&branches);
 803         string_list_clear(&branches, 0);
 804
 805         if (skipped.nr) {
 806                 fprintf_ln(stderr,
 807                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 808                               "to delete it, use:",
 809                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 810                               "to delete them, use:",
 811                               skipped.nr));
 812                 for (i = 0; i < skipped.nr; i++)
 813                         fprintf(stderr, "  git branch -d %s\n",
 814                                 skipped.items[i].string);
 815         }
 816         string_list_clear(&skipped, 0);
 817
 818         if (!result) {
 819                 strbuf_addf(&buf, "remote.%s", remote->name);
 820                 if (git_config_rename_section(buf.buf, NULL) < 1)
 821                         return error(_("Could not remove config section '%s'"), buf.buf);
 822         }
 823
 824         return result;
 825 }
 826
 827 static void clear_push_info(void *util, const char *string)
 828 {
 829         struct push_info *info = util;
 830         free(info->dest);
 831         free(info);
 832 }
 833
 834 static void free_remote_ref_states(struct ref_states *states)
 835 {
 836         string_list_clear(&states->new, 0);
 837         string_list_clear(&states->stale, 1);
 838         string_list_clear(&states->tracked, 0);
 839         string_list_clear(&states->heads, 0);
 840         string_list_clear_func(&states->push, clear_push_info);
 841 }
 842
 843 static int append_ref_to_tracked_list(const char *refname,
 844         const struct object_id *oid, int flags, void *cb_data)
 845 {
 846         struct ref_states *states = cb_data;
 847         struct refspec refspec;
 848
 849         if (flags & REF_ISSYMREF)
 850                 return 0;
 851
 852         memset(&refspec, 0, sizeof(refspec));
 853         refspec.dst = (char *)refname;
 854         if (!remote_find_tracking(states->remote, &refspec))
 855                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 856
 857         return 0;
 858 }
 859
 860 static int get_remote_ref_states(const char *name,
 861                                  struct ref_states *states,
 862                                  int query)
 863 {
 864         struct transport *transport;
 865         const struct ref *remote_refs;
 866
 867         states->remote = remote_get(name);
 868         if (!states->remote)
 869                 return error(_("No such remote: %s"), name);
 870
 871         read_branches();
 872
 873         if (query) {
 874                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 875                         states->remote->url[0] : NULL);
 876                 remote_refs = transport_get_remote_refs(transport);
 877                 transport_disconnect(transport);
 878
 879                 states->queried = 1;
 880                 if (query & GET_REF_STATES)
 881                         get_ref_states(remote_refs, states);
 882                 if (query & GET_HEAD_NAMES)
 883                         get_head_names(remote_refs, states);
 884                 if (query & GET_PUSH_REF_STATES)
 885                         get_push_ref_states(remote_refs, states);
 886         } else {
 887                 for_each_ref(append_ref_to_tracked_list, states);
 888                 string_list_sort(&states->tracked);
 889                 get_push_ref_states_noquery(states);
 890         }
 891
 892         return 0;
 893 }
 894
 895 struct show_info {
 896         struct string_list *list;
 897         struct ref_states *states;
 898         int width, width2;
 899         int any_rebase;
 900 };
 901
 902 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 903 {
 904         struct show_info *info = cb_data;
 905         int n = strlen(item->string);
 906         if (n > info->width)
 907                 info->width = n;
 908         string_list_insert(info->list, item->string);
 909         return 0;
 910 }
 911
 912 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 913 {
 914         struct show_info *info = cb_data;
 915         struct ref_states *states = info->states;
 916         const char *name = item->string;
 917
 918         if (states->queried) {
 919                 const char *fmt = "%s";
 920                 const char *arg = "";
 921                 if (string_list_has_string(&states->new, name)) {
 922                         fmt = _(" new (next fetch will store in remotes/%s)");
 923                         arg = states->remote->name;
 924                 } else if (string_list_has_string(&states->tracked, name))
 925                         arg = _(" tracked");
 926                 else if (string_list_has_string(&states->stale, name))
 927                         arg = _(" stale (use 'git remote prune' to remove)");
 928                 else
 929                         arg = _(" ???");
 930                 printf("    %-*s", info->width, name);
 931                 printf(fmt, arg);
 932                 printf("\n");
 933         } else
 934                 printf("    %s\n", name);
 935
 936         return 0;
 937 }
 938
 939 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 940 {
 941         struct show_info *show_info = cb_data;
 942         struct ref_states *states = show_info->states;
 943         struct branch_info *branch_info = branch_item->util;
 944         struct string_list_item *item;
 945         int n;
 946
 947         if (!branch_info->merge.nr || !branch_info->remote_name ||
 948             strcmp(states->remote->name, branch_info->remote_name))
 949                 return 0;
 950         if ((n = strlen(branch_item->string)) > show_info->width)
 951                 show_info->width = n;
 952         if (branch_info->rebase)
 953                 show_info->any_rebase = 1;
 954
 955         item = string_list_insert(show_info->list, branch_item->string);
 956         item->util = branch_info;
 957
 958         return 0;
 959 }
 960
 961 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 962 {
 963         struct show_info *show_info = cb_data;
 964         struct branch_info *branch_info = item->util;
 965         struct string_list *merge = &branch_info->merge;
 966         const char *also;
 967         int i;
 968
 969         if (branch_info->rebase && branch_info->merge.nr > 1) {
 970                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 971                         item->string);
 972                 return 0;
 973         }
 974
 975         printf("    %-*s ", show_info->width, item->string);
 976         if (branch_info->rebase) {
 977                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
 978                 return 0;
 979         } else if (show_info->any_rebase) {
 980                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 981                 also = _("    and with remote");
 982         } else {
 983                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 984                 also = _("   and with remote");
 985         }
 986         for (i = 1; i < merge->nr; i++)
 987                 printf("    %-*s %s %s\n", show_info->width, "", also,
 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                         printf_ln(_("  Push  URL: %s"), url[i]);
1167                 if (!i)
1168                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1169                 if (no_query)
1170                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1171                 else if (!states.heads.nr)
1172                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1173                 else if (states.heads.nr == 1)
1174                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1175                 else {
1176                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1177                                  " may be one of the following):\n"));
1178                         for (i = 0; i < states.heads.nr; i++)
1179                                 printf("    %s\n", states.heads.items[i].string);
1180                 }
1181
1182                 /* remote branch info */
1183                 info.width = 0;
1184                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1185                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1186                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1187                 if (info.list->nr)
1188                         printf_ln(Q_("  Remote branch:%s",
1189                                      "  Remote branches:%s",
1190                                      info.list->nr),
1191                                   no_query ? _(" (status not queried)") : "");
1192                 for_each_string_list(info.list, show_remote_info_item, &info);
1193                 string_list_clear(info.list, 0);
1194
1195                 /* git pull info */
1196                 info.width = 0;
1197                 info.any_rebase = 0;
1198                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1199                 if (info.list->nr)
1200                         printf_ln(Q_("  Local branch configured for 'git pull':",
1201                                      "  Local branches configured for 'git pull':",
1202                                      info.list->nr));
1203                 for_each_string_list(info.list, show_local_info_item, &info);
1204                 string_list_clear(info.list, 0);
1205
1206                 /* git push info */
1207                 if (states.remote->mirror)
1208                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1209
1210                 info.width = info.width2 = 0;
1211                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1212                 qsort(info.list->items, info.list->nr,
1213                         sizeof(*info.list->items), cmp_string_with_push);
1214                 if (info.list->nr)
1215                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1216                                      "  Local refs configured for 'git push'%s:",
1217                                      info.list->nr),
1218                                   no_query ? _(" (status not queried)") : "");
1219                 for_each_string_list(info.list, show_push_info_item, &info);
1220                 string_list_clear(info.list, 0);
1221
1222                 free_remote_ref_states(&states);
1223         }
1224
1225         return result;
1226 }
1227
1228 static int set_head(int argc, const char **argv)
1229 {
1230         int i, opt_a = 0, opt_d = 0, result = 0;
1231         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1232         char *head_name = NULL;
1233
1234         struct option options[] = {
1235                 OPT_BOOL('a', "auto", &opt_a,
1236                          N_("set refs/remotes/<name>/HEAD according to remote")),
1237                 OPT_BOOL('d', "delete", &opt_d,
1238                          N_("delete refs/remotes/<name>/HEAD")),
1239                 OPT_END()
1240         };
1241         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1242                              0);
1243         if (argc)
1244                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1245
1246         if (!opt_a && !opt_d && argc == 2) {
1247                 head_name = xstrdup(argv[1]);
1248         } else if (opt_a && !opt_d && argc == 1) {
1249                 struct ref_states states;
1250                 memset(&states, 0, sizeof(states));
1251                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1252                 if (!states.heads.nr)
1253                         result |= error(_("Cannot determine remote HEAD"));
1254                 else if (states.heads.nr > 1) {
1255                         result |= error(_("Multiple remote HEAD branches. "
1256                                           "Please choose one explicitly with:"));
1257                         for (i = 0; i < states.heads.nr; i++)
1258                                 fprintf(stderr, "  git remote set-head %s %s\n",
1259                                         argv[0], states.heads.items[i].string);
1260                 } else
1261                         head_name = xstrdup(states.heads.items[0].string);
1262                 free_remote_ref_states(&states);
1263         } else if (opt_d && !opt_a && argc == 1) {
1264                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1265                         result |= error(_("Could not delete %s"), buf.buf);
1266         } else
1267                 usage_with_options(builtin_remote_sethead_usage, options);
1268
1269         if (head_name) {
1270                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1271                 /* make sure it's valid */
1272                 if (!ref_exists(buf2.buf))
1273                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1274                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1275                         result |= error(_("Could not setup %s"), buf.buf);
1276                 if (opt_a)
1277                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1278                 free(head_name);
1279         }
1280
1281         strbuf_release(&buf);
1282         strbuf_release(&buf2);
1283         return result;
1284 }
1285
1286 static int prune_remote(const char *remote, int dry_run)
1287 {
1288         int result = 0;
1289         struct ref_states states;
1290         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1291         struct string_list_item *item;
1292         const char *dangling_msg = dry_run
1293                 ? _(" %s will become dangling!")
1294                 : _(" %s has become dangling!");
1295
1296         memset(&states, 0, sizeof(states));
1297         get_remote_ref_states(remote, &states, GET_REF_STATES);
1298
1299         if (!states.stale.nr) {
1300                 free_remote_ref_states(&states);
1301                 return 0;
1302         }
1303
1304         printf_ln(_("Pruning %s"), remote);
1305         printf_ln(_("URL: %s"),
1306                   states.remote->url_nr
1307                   ? states.remote->url[0]
1308                   : _("(no URL)"));
1309
1310         for_each_string_list_item(item, &states.stale)
1311                 string_list_append(&refs_to_prune, item->util);
1312         string_list_sort(&refs_to_prune);
1313
1314         if (!dry_run)
1315                 result |= delete_refs(&refs_to_prune);
1316
1317         for_each_string_list_item(item, &states.stale) {
1318                 const char *refname = item->util;
1319
1320                 if (dry_run)
1321                         printf_ln(_(" * [would prune] %s"),
1322                                abbrev_ref(refname, "refs/remotes/"));
1323                 else
1324                         printf_ln(_(" * [pruned] %s"),
1325                                abbrev_ref(refname, "refs/remotes/"));
1326         }
1327
1328         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1329
1330         string_list_clear(&refs_to_prune, 0);
1331         free_remote_ref_states(&states);
1332         return result;
1333 }
1334
1335 static int prune(int argc, const char **argv)
1336 {
1337         int dry_run = 0, result = 0;
1338         struct option options[] = {
1339                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1340                 OPT_END()
1341         };
1342
1343         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1344                              0);
1345
1346         if (argc < 1)
1347                 usage_with_options(builtin_remote_prune_usage, options);
1348
1349         for (; argc; argc--, argv++)
1350                 result |= prune_remote(*argv, dry_run);
1351
1352         return result;
1353 }
1354
1355 static int get_remote_default(const char *key, const char *value, void *priv)
1356 {
1357         if (strcmp(key, "remotes.default") == 0) {
1358                 int *found = priv;
1359                 *found = 1;
1360         }
1361         return 0;
1362 }
1363
1364 static int update(int argc, const char **argv)
1365 {
1366         int i, prune = -1;
1367         struct option options[] = {
1368                 OPT_BOOL('p', "prune", &prune,
1369                          N_("prune remotes after fetching")),
1370                 OPT_END()
1371         };
1372         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1373         int default_defined = 0;
1374         int retval;
1375
1376         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1377                              PARSE_OPT_KEEP_ARGV0);
1378
1379         argv_array_push(&fetch_argv, "fetch");
1380
1381         if (prune != -1)
1382                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1383         if (verbose)
1384                 argv_array_push(&fetch_argv, "-v");
1385         argv_array_push(&fetch_argv, "--multiple");
1386         if (argc < 2)
1387                 argv_array_push(&fetch_argv, "default");
1388         for (i = 1; i < argc; i++)
1389                 argv_array_push(&fetch_argv, argv[i]);
1390
1391         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1392                 git_config(get_remote_default, &default_defined);
1393                 if (!default_defined) {
1394                         argv_array_pop(&fetch_argv);
1395                         argv_array_push(&fetch_argv, "--all");
1396                 }
1397         }
1398
1399         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1400         argv_array_clear(&fetch_argv);
1401         return retval;
1402 }
1403
1404 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1405 {
1406         return git_config_set_multivar(key, NULL, NULL, 1);
1407 }
1408
1409 static int add_branches(struct remote *remote, const char **branches,
1410                         const char *key)
1411 {
1412         const char *remotename = remote->name;
1413         int mirror = remote->mirror;
1414         struct strbuf refspec = STRBUF_INIT;
1415
1416         for (; *branches; branches++)
1417                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1418                         strbuf_release(&refspec);
1419                         return 1;
1420                 }
1421
1422         strbuf_release(&refspec);
1423         return 0;
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         if (!remote_is_configured(remotename))
1435                 die(_("No such remote '%s'"), remotename);
1436         remote = remote_get(remotename);
1437
1438         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1439                 strbuf_release(&key);
1440                 return 1;
1441         }
1442         if (add_branches(remote, branches, key.buf)) {
1443                 strbuf_release(&key);
1444                 return 1;
1445         }
1446
1447         strbuf_release(&key);
1448         return 0;
1449 }
1450
1451 static int set_branches(int argc, const char **argv)
1452 {
1453         int add_mode = 0;
1454         struct option options[] = {
1455                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1456                 OPT_END()
1457         };
1458
1459         argc = parse_options(argc, argv, NULL, options,
1460                              builtin_remote_setbranches_usage, 0);
1461         if (argc == 0) {
1462                 error(_("no remote specified"));
1463                 usage_with_options(builtin_remote_setbranches_usage, options);
1464         }
1465         argv[argc] = NULL;
1466
1467         return set_remote_branches(argv[0], argv + 1, add_mode);
1468 }
1469
1470 static int set_url(int argc, const char **argv)
1471 {
1472         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1473         int matches = 0, negative_matches = 0;
1474         const char *remotename = NULL;
1475         const char *newurl = NULL;
1476         const char *oldurl = NULL;
1477         struct remote *remote;
1478         regex_t old_regex;
1479         const char **urlset;
1480         int urlset_nr;
1481         struct strbuf name_buf = STRBUF_INIT;
1482         struct option options[] = {
1483                 OPT_BOOL('\0', "push", &push_mode,
1484                          N_("manipulate push URLs")),
1485                 OPT_BOOL('\0', "add", &add_mode,
1486                          N_("add URL")),
1487                 OPT_BOOL('\0', "delete", &delete_mode,
1488                             N_("delete URLs")),
1489                 OPT_END()
1490         };
1491         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1492                              PARSE_OPT_KEEP_ARGV0);
1493
1494         if (add_mode && delete_mode)
1495                 die(_("--add --delete doesn't make sense"));
1496
1497         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1498                 usage_with_options(builtin_remote_seturl_usage, options);
1499
1500         remotename = argv[1];
1501         newurl = argv[2];
1502         if (argc > 3)
1503                 oldurl = argv[3];
1504
1505         if (delete_mode)
1506                 oldurl = newurl;
1507
1508         if (!remote_is_configured(remotename))
1509                 die(_("No such remote '%s'"), remotename);
1510         remote = remote_get(remotename);
1511
1512         if (push_mode) {
1513                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1514                 urlset = remote->pushurl;
1515                 urlset_nr = remote->pushurl_nr;
1516         } else {
1517                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1518                 urlset = remote->url;
1519                 urlset_nr = remote->url_nr;
1520         }
1521
1522         /* Special cases that add new entry. */
1523         if ((!oldurl && !delete_mode) || add_mode) {
1524                 if (add_mode)
1525                         git_config_set_multivar(name_buf.buf, newurl,
1526                                 "^$", 0);
1527                 else
1528                         git_config_set(name_buf.buf, newurl);
1529                 strbuf_release(&name_buf);
1530                 return 0;
1531         }
1532
1533         /* Old URL specified. Demand that one matches. */
1534         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1535                 die(_("Invalid old URL pattern: %s"), oldurl);
1536
1537         for (i = 0; i < urlset_nr; i++)
1538                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1539                         matches++;
1540                 else
1541                         negative_matches++;
1542         if (!delete_mode && !matches)
1543                 die(_("No such URL found: %s"), oldurl);
1544         if (delete_mode && !negative_matches && !push_mode)
1545                 die(_("Will not delete all non-push URLs"));
1546
1547         regfree(&old_regex);
1548
1549         if (!delete_mode)
1550                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1551         else
1552                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1553         return 0;
1554 }
1555
1556 int cmd_remote(int argc, const char **argv, const char *prefix)
1557 {
1558         struct option options[] = {
1559                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1560                 OPT_END()
1561         };
1562         int result;
1563
1564         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1565                 PARSE_OPT_STOP_AT_NON_OPTION);
1566
1567         if (argc < 1)
1568                 result = show_all();
1569         else if (!strcmp(argv[0], "add"))
1570                 result = add(argc, argv);
1571         else if (!strcmp(argv[0], "rename"))
1572                 result = mv(argc, argv);
1573         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1574                 result = rm(argc, argv);
1575         else if (!strcmp(argv[0], "set-head"))
1576                 result = set_head(argc, argv);
1577         else if (!strcmp(argv[0], "set-branches"))
1578                 result = set_branches(argc, argv);
1579         else if (!strcmp(argv[0], "set-url"))
1580                 result = set_url(argc, argv);
1581         else if (!strcmp(argv[0], "show"))
1582                 result = show(argc, argv);
1583         else if (!strcmp(argv[0], "prune"))
1584                 result = prune(argc, argv);
1585         else if (!strcmp(argv[0], "update"))
1586                 result = update(argc, argv);
1587         else {
1588                 error(_("Unknown subcommand: %s"), argv[0]);
1589                 usage_with_options(builtin_remote_usage, options);
1590         }
1591
1592         return result ? 1 : 0;
1593 }