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 || strcmp(name, remote->url[0]) ||
 184                         remote->fetch_refspec_nr))
 185                 die(_("remote %s already exists."), name);
 186
 187         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 188         if (!valid_fetch_refspec(buf2.buf))
 189                 die(_("'%s' is not a valid remote name"), name);
 190
 191         strbuf_addf(&buf, "remote.%s.url", name);
 192         if (git_config_set(buf.buf, url))
 193                 return 1;
 194
 195         if (!mirror || mirror & MIRROR_FETCH) {
 196                 strbuf_reset(&buf);
 197                 strbuf_addf(&buf, "remote.%s.fetch", name);
 198                 if (track.nr == 0)
 199                         string_list_append(&track, "*");
 200                 for (i = 0; i < track.nr; i++) {
 201                         if (add_branch(buf.buf, track.items[i].string,
 202                                        name, mirror, &buf2))
 203                                 return 1;
 204                 }
 205         }
 206
 207         if (mirror & MIRROR_PUSH) {
 208                 strbuf_reset(&buf);
 209                 strbuf_addf(&buf, "remote.%s.mirror", name);
 210                 if (git_config_set(buf.buf, "true"))
 211                         return 1;
 212         }
 213
 214         if (fetch_tags != TAGS_DEFAULT) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 217                 if (git_config_set(buf.buf,
 218                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 219                         return 1;
 220         }
 221
 222         if (fetch && fetch_remote(name))
 223                 return 1;
 224
 225         if (master) {
 226                 strbuf_reset(&buf);
 227                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 228
 229                 strbuf_reset(&buf2);
 230                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 231
 232                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 233                         return error(_("Could not setup master '%s'"), master);
 234         }
 235
 236         strbuf_release(&buf);
 237         strbuf_release(&buf2);
 238         string_list_clear(&track, 0);
 239
 240         return 0;
 241 }
 242
 243 struct branch_info {
 244         char *remote_name;
 245         struct string_list merge;
 246         enum { NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE } rebase;
 247 };
 248
 249 static struct string_list branch_list;
 250
 251 static const char *abbrev_ref(const char *name, const char *prefix)
 252 {
 253         skip_prefix(name, prefix, &name);
 254         return name;
 255 }
 256 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 257
 258 static int config_read_branches(const char *key, const char *value, void *cb)
 259 {
 260         if (starts_with(key, "branch.")) {
 261                 const char *orig_key = key;
 262                 char *name;
 263                 struct string_list_item *item;
 264                 struct branch_info *info;
 265                 enum { REMOTE, MERGE, REBASE } type;
 266                 size_t key_len;
 267
 268                 key += 7;
 269                 if (strip_suffix(key, ".remote", &key_len)) {
 270                         name = xmemdupz(key, key_len);
 271                         type = REMOTE;
 272                 } else if (strip_suffix(key, ".merge", &key_len)) {
 273                         name = xmemdupz(key, key_len);
 274                         type = MERGE;
 275                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 276                         name = xmemdupz(key, key_len);
 277                         type = REBASE;
 278                 } else
 279                         return 0;
 280
 281                 item = string_list_insert(&branch_list, name);
 282
 283                 if (!item->util)
 284                         item->util = xcalloc(1, sizeof(struct branch_info));
 285                 info = item->util;
 286                 if (type == REMOTE) {
 287                         if (info->remote_name)
 288                                 warning(_("more than one %s"), orig_key);
 289                         info->remote_name = xstrdup(value);
 290                 } else if (type == MERGE) {
 291                         char *space = strchr(value, ' ');
 292                         value = abbrev_branch(value);
 293                         while (space) {
 294                                 char *merge;
 295                                 merge = xstrndup(value, space - value);
 296                                 string_list_append(&info->merge, merge);
 297                                 value = abbrev_branch(space + 1);
 298                                 space = strchr(value, ' ');
 299                         }
 300                         string_list_append(&info->merge, xstrdup(value));
 301                 } else {
 302                         int v = git_config_maybe_bool(orig_key, value);
 303                         if (v >= 0)
 304                                 info->rebase = v;
 305                         else if (!strcmp(value, "preserve"))
 306                                 info->rebase = 1;
 307                         else if (!strcmp(value, "interactive"))
 308                                 info->rebase = INTERACTIVE_REBASE;
 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         sort_string_list(&states->new);
 358         sort_string_list(&states->tracked);
 359         sort_string_list(&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 unsigned char *sha1, int flags, void *cb_data)
 513 {
 514         struct branches_for_remote *branches = cb_data;
 515         struct refspec refspec;
 516         struct string_list_item *item;
 517         struct known_remote *kr;
 518
 519         memset(&refspec, 0, sizeof(refspec));
 520         refspec.dst = (char *)refname;
 521         if (remote_find_tracking(branches->remote, &refspec))
 522                 return 0;
 523
 524         /* don't delete a branch if another remote also uses it */
 525         for (kr = branches->keep->list; kr; kr = kr->next) {
 526                 memset(&refspec, 0, sizeof(refspec));
 527                 refspec.dst = (char *)refname;
 528                 if (!remote_find_tracking(kr->remote, &refspec))
 529                         return 0;
 530         }
 531
 532         /* don't delete non-remote-tracking refs */
 533         if (!starts_with(refname, "refs/remotes/")) {
 534                 /* advise user how to delete local branches */
 535                 if (starts_with(refname, "refs/heads/"))
 536                         string_list_append(branches->skipped,
 537                                            abbrev_branch(refname));
 538                 /* silently skip over other non-remote refs */
 539                 return 0;
 540         }
 541
 542         /* make sure that symrefs are deleted */
 543         if (flags & REF_ISSYMREF)
 544                 return unlink(git_path("%s", refname));
 545
 546         item = string_list_append(branches->branches, refname);
 547         item->util = xmalloc(20);
 548         hashcpy(item->util, sha1);
 549
 550         return 0;
 551 }
 552
 553 struct rename_info {
 554         const char *old;
 555         const char *new;
 556         struct string_list *remote_branches;
 557 };
 558
 559 static int read_remote_branches(const char *refname,
 560         const unsigned char *sha1, 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         unsigned char orig_sha1[20];
 567         const char *symref;
 568
 569         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 570         if (starts_with(refname, buf.buf)) {
 571                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 572                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
 573                 if (flag & REF_ISSYMREF)
 574                         item->util = xstrdup(symref);
 575                 else
 576                         item->util = NULL;
 577         }
 578
 579         return 0;
 580 }
 581
 582 static int migrate_file(struct remote *remote)
 583 {
 584         struct strbuf buf = STRBUF_INIT;
 585         int i;
 586         char *path = NULL;
 587
 588         strbuf_addf(&buf, "remote.%s.url", remote->name);
 589         for (i = 0; i < remote->url_nr; i++)
 590                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 591                         return error(_("Could not append '%s' to '%s'"),
 592                                         remote->url[i], buf.buf);
 593         strbuf_reset(&buf);
 594         strbuf_addf(&buf, "remote.%s.push", remote->name);
 595         for (i = 0; i < remote->push_refspec_nr; i++)
 596                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 597                         return error(_("Could not append '%s' to '%s'"),
 598                                         remote->push_refspec[i], buf.buf);
 599         strbuf_reset(&buf);
 600         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 601         for (i = 0; i < remote->fetch_refspec_nr; i++)
 602                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 603                         return error(_("Could not append '%s' to '%s'"),
 604                                         remote->fetch_refspec[i], buf.buf);
 605         if (remote->origin == REMOTE_REMOTES)
 606                 path = git_path("remotes/%s", remote->name);
 607         else if (remote->origin == REMOTE_BRANCHES)
 608                 path = git_path("branches/%s", remote->name);
 609         if (path)
 610                 unlink_or_warn(path);
 611         return 0;
 612 }
 613
 614 static int mv(int argc, const char **argv)
 615 {
 616         struct option options[] = {
 617                 OPT_END()
 618         };
 619         struct remote *oldremote, *newremote;
 620         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 621                 old_remote_context = STRBUF_INIT;
 622         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 623         struct rename_info rename;
 624         int i, refspec_updated = 0;
 625
 626         if (argc != 3)
 627                 usage_with_options(builtin_remote_rename_usage, options);
 628
 629         rename.old = argv[1];
 630         rename.new = argv[2];
 631         rename.remote_branches = &remote_branches;
 632
 633         oldremote = remote_get(rename.old);
 634         if (!oldremote)
 635                 die(_("No such remote: %s"), rename.old);
 636
 637         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 638                 return migrate_file(oldremote);
 639
 640         newremote = remote_get(rename.new);
 641         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 642                 die(_("remote %s already exists."), rename.new);
 643
 644         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 645         if (!valid_fetch_refspec(buf.buf))
 646                 die(_("'%s' is not a valid remote name"), rename.new);
 647
 648         strbuf_reset(&buf);
 649         strbuf_addf(&buf, "remote.%s", rename.old);
 650         strbuf_addf(&buf2, "remote.%s", rename.new);
 651         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 652                 return error(_("Could not rename config section '%s' to '%s'"),
 653                                 buf.buf, buf2.buf);
 654
 655         strbuf_reset(&buf);
 656         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 657         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 658                 return error(_("Could not remove config section '%s'"), buf.buf);
 659         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 660         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 661                 char *ptr;
 662
 663                 strbuf_reset(&buf2);
 664                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 665                 ptr = strstr(buf2.buf, old_remote_context.buf);
 666                 if (ptr) {
 667                         refspec_updated = 1;
 668                         strbuf_splice(&buf2,
 669                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 670                                       strlen(rename.old), rename.new,
 671                                       strlen(rename.new));
 672                 } else
 673                         warning(_("Not updating non-default fetch refspec\n"
 674                                   "\t%s\n"
 675                                   "\tPlease update the configuration manually if necessary."),
 676                                 buf2.buf);
 677
 678                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 679                         return error(_("Could not append '%s'"), buf.buf);
 680         }
 681
 682         read_branches();
 683         for (i = 0; i < branch_list.nr; i++) {
 684                 struct string_list_item *item = branch_list.items + i;
 685                 struct branch_info *info = item->util;
 686                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 687                         strbuf_reset(&buf);
 688                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 689                         if (git_config_set(buf.buf, rename.new)) {
 690                                 return error(_("Could not set '%s'"), buf.buf);
 691                         }
 692                 }
 693         }
 694
 695         if (!refspec_updated)
 696                 return 0;
 697
 698         /*
 699          * First remove symrefs, then rename the rest, finally create
 700          * the new symrefs.
 701          */
 702         for_each_ref(read_remote_branches, &rename);
 703         for (i = 0; i < remote_branches.nr; i++) {
 704                 struct string_list_item *item = remote_branches.items + i;
 705                 int flag = 0;
 706                 unsigned char sha1[20];
 707
 708                 read_ref_full(item->string, sha1, 1, &flag);
 709                 if (!(flag & REF_ISSYMREF))
 710                         continue;
 711                 if (delete_ref(item->string, NULL, REF_NODEREF))
 712                         die(_("deleting '%s' failed"), item->string);
 713         }
 714         for (i = 0; i < remote_branches.nr; i++) {
 715                 struct string_list_item *item = remote_branches.items + i;
 716
 717                 if (item->util)
 718                         continue;
 719                 strbuf_reset(&buf);
 720                 strbuf_addstr(&buf, item->string);
 721                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 722                                 rename.new, strlen(rename.new));
 723                 strbuf_reset(&buf2);
 724                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 725                                 item->string, buf.buf);
 726                 if (rename_ref(item->string, buf.buf, buf2.buf))
 727                         die(_("renaming '%s' failed"), item->string);
 728         }
 729         for (i = 0; i < remote_branches.nr; i++) {
 730                 struct string_list_item *item = remote_branches.items + i;
 731
 732                 if (!item->util)
 733                         continue;
 734                 strbuf_reset(&buf);
 735                 strbuf_addstr(&buf, item->string);
 736                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 737                                 rename.new, strlen(rename.new));
 738                 strbuf_reset(&buf2);
 739                 strbuf_addstr(&buf2, item->util);
 740                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 741                                 rename.new, strlen(rename.new));
 742                 strbuf_reset(&buf3);
 743                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 744                                 item->string, buf.buf);
 745                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 746                         die(_("creating '%s' failed"), buf.buf);
 747         }
 748         return 0;
 749 }
 750
 751 static int remove_branches(struct string_list *branches)
 752 {
 753         const char **branch_names;
 754         int i, result = 0;
 755
 756         branch_names = xmalloc(branches->nr * sizeof(*branch_names));
 757         for (i = 0; i < branches->nr; i++)
 758                 branch_names[i] = branches->items[i].string;
 759         result |= repack_without_refs(branch_names, branches->nr, NULL);
 760         free(branch_names);
 761
 762         for (i = 0; i < branches->nr; i++) {
 763                 struct string_list_item *item = branches->items + i;
 764                 const char *refname = item->string;
 765
 766                 if (delete_ref(refname, NULL, 0))
 767                         result |= error(_("Could not remove branch %s"), refname);
 768         }
 769
 770         return result;
 771 }
 772
 773 static int rm(int argc, const char **argv)
 774 {
 775         struct option options[] = {
 776                 OPT_END()
 777         };
 778         struct remote *remote;
 779         struct strbuf buf = STRBUF_INIT;
 780         struct known_remotes known_remotes = { NULL, NULL };
 781         struct string_list branches = STRING_LIST_INIT_DUP;
 782         struct string_list skipped = STRING_LIST_INIT_DUP;
 783         struct branches_for_remote cb_data;
 784         int i, result;
 785
 786         memset(&cb_data, 0, sizeof(cb_data));
 787         cb_data.branches = &branches;
 788         cb_data.skipped = &skipped;
 789         cb_data.keep = &known_remotes;
 790
 791         if (argc != 2)
 792                 usage_with_options(builtin_remote_rm_usage, options);
 793
 794         remote = remote_get(argv[1]);
 795         if (!remote)
 796                 die(_("No such remote: %s"), argv[1]);
 797
 798         known_remotes.to_delete = remote;
 799         for_each_remote(add_known_remote, &known_remotes);
 800
 801         read_branches();
 802         for (i = 0; i < branch_list.nr; i++) {
 803                 struct string_list_item *item = branch_list.items + i;
 804                 struct branch_info *info = item->util;
 805                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 806                         const char *keys[] = { "remote", "merge", NULL }, **k;
 807                         for (k = keys; *k; k++) {
 808                                 strbuf_reset(&buf);
 809                                 strbuf_addf(&buf, "branch.%s.%s",
 810                                                 item->string, *k);
 811                                 if (git_config_set(buf.buf, NULL)) {
 812                                         strbuf_release(&buf);
 813                                         return -1;
 814                                 }
 815                         }
 816                 }
 817         }
 818
 819         /*
 820          * We cannot just pass a function to for_each_ref() which deletes
 821          * the branches one by one, since for_each_ref() relies on cached
 822          * refs, which are invalidated when deleting a branch.
 823          */
 824         cb_data.remote = remote;
 825         result = for_each_ref(add_branch_for_removal, &cb_data);
 826         strbuf_release(&buf);
 827
 828         if (!result)
 829                 result = remove_branches(&branches);
 830         string_list_clear(&branches, 1);
 831
 832         if (skipped.nr) {
 833                 fprintf_ln(stderr,
 834                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 835                               "to delete it, use:",
 836                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 837                               "to delete them, use:",
 838                               skipped.nr));
 839                 for (i = 0; i < skipped.nr; i++)
 840                         fprintf(stderr, "  git branch -d %s\n",
 841                                 skipped.items[i].string);
 842         }
 843         string_list_clear(&skipped, 0);
 844
 845         if (!result) {
 846                 strbuf_addf(&buf, "remote.%s", remote->name);
 847                 if (git_config_rename_section(buf.buf, NULL) < 1)
 848                         return error(_("Could not remove config section '%s'"), buf.buf);
 849         }
 850
 851         return result;
 852 }
 853
 854 static void clear_push_info(void *util, const char *string)
 855 {
 856         struct push_info *info = util;
 857         free(info->dest);
 858         free(info);
 859 }
 860
 861 static void free_remote_ref_states(struct ref_states *states)
 862 {
 863         string_list_clear(&states->new, 0);
 864         string_list_clear(&states->stale, 1);
 865         string_list_clear(&states->tracked, 0);
 866         string_list_clear(&states->heads, 0);
 867         string_list_clear_func(&states->push, clear_push_info);
 868 }
 869
 870 static int append_ref_to_tracked_list(const char *refname,
 871         const unsigned char *sha1, int flags, void *cb_data)
 872 {
 873         struct ref_states *states = cb_data;
 874         struct refspec refspec;
 875
 876         if (flags & REF_ISSYMREF)
 877                 return 0;
 878
 879         memset(&refspec, 0, sizeof(refspec));
 880         refspec.dst = (char *)refname;
 881         if (!remote_find_tracking(states->remote, &refspec))
 882                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 883
 884         return 0;
 885 }
 886
 887 static int get_remote_ref_states(const char *name,
 888                                  struct ref_states *states,
 889                                  int query)
 890 {
 891         struct transport *transport;
 892         const struct ref *remote_refs;
 893
 894         states->remote = remote_get(name);
 895         if (!states->remote)
 896                 return error(_("No such remote: %s"), name);
 897
 898         read_branches();
 899
 900         if (query) {
 901                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 902                         states->remote->url[0] : NULL);
 903                 remote_refs = transport_get_remote_refs(transport);
 904                 transport_disconnect(transport);
 905
 906                 states->queried = 1;
 907                 if (query & GET_REF_STATES)
 908                         get_ref_states(remote_refs, states);
 909                 if (query & GET_HEAD_NAMES)
 910                         get_head_names(remote_refs, states);
 911                 if (query & GET_PUSH_REF_STATES)
 912                         get_push_ref_states(remote_refs, states);
 913         } else {
 914                 for_each_ref(append_ref_to_tracked_list, states);
 915                 sort_string_list(&states->tracked);
 916                 get_push_ref_states_noquery(states);
 917         }
 918
 919         return 0;
 920 }
 921
 922 struct show_info {
 923         struct string_list *list;
 924         struct ref_states *states;
 925         int width, width2;
 926         int any_rebase;
 927 };
 928
 929 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 930 {
 931         struct show_info *info = cb_data;
 932         int n = strlen(item->string);
 933         if (n > info->width)
 934                 info->width = n;
 935         string_list_insert(info->list, item->string);
 936         return 0;
 937 }
 938
 939 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 940 {
 941         struct show_info *info = cb_data;
 942         struct ref_states *states = info->states;
 943         const char *name = item->string;
 944
 945         if (states->queried) {
 946                 const char *fmt = "%s";
 947                 const char *arg = "";
 948                 if (string_list_has_string(&states->new, name)) {
 949                         fmt = _(" new (next fetch will store in remotes/%s)");
 950                         arg = states->remote->name;
 951                 } else if (string_list_has_string(&states->tracked, name))
 952                         arg = _(" tracked");
 953                 else if (string_list_has_string(&states->stale, name))
 954                         arg = _(" stale (use 'git remote prune' to remove)");
 955                 else
 956                         arg = _(" ???");
 957                 printf("    %-*s", info->width, name);
 958                 printf(fmt, arg);
 959                 printf("\n");
 960         } else
 961                 printf("    %s\n", name);
 962
 963         return 0;
 964 }
 965
 966 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 967 {
 968         struct show_info *show_info = cb_data;
 969         struct ref_states *states = show_info->states;
 970         struct branch_info *branch_info = branch_item->util;
 971         struct string_list_item *item;
 972         int n;
 973
 974         if (!branch_info->merge.nr || !branch_info->remote_name ||
 975             strcmp(states->remote->name, branch_info->remote_name))
 976                 return 0;
 977         if ((n = strlen(branch_item->string)) > show_info->width)
 978                 show_info->width = n;
 979         if (branch_info->rebase)
 980                 show_info->any_rebase = 1;
 981
 982         item = string_list_insert(show_info->list, branch_item->string);
 983         item->util = branch_info;
 984
 985         return 0;
 986 }
 987
 988 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 989 {
 990         struct show_info *show_info = cb_data;
 991         struct branch_info *branch_info = item->util;
 992         struct string_list *merge = &branch_info->merge;
 993         const char *also;
 994         int i;
 995
 996         if (branch_info->rebase && branch_info->merge.nr > 1) {
 997                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 998                         item->string);
 999                 return 0;
1000         }
1001
1002         printf("    %-*s ", show_info->width, item->string);
1003         if (branch_info->rebase) {
1004                 printf_ln(_(branch_info->rebase == INTERACTIVE_REBASE ?
1005                         "rebases interactively onto remote %s" :
1006                         "rebases onto remote %s"), merge->items[0].string);
1007                 return 0;
1008         } else if (show_info->any_rebase) {
1009                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1010                 also = _("    and with remote");
1011         } else {
1012                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1013                 also = _("   and with remote");
1014         }
1015         for (i = 1; i < merge->nr; i++)
1016                 printf("    %-*s %s %s\n", show_info->width, "", also,
1017                        merge->items[i].string);
1018
1019         return 0;
1020 }
1021
1022 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1023 {
1024         struct show_info *show_info = cb_data;
1025         struct push_info *push_info = push_item->util;
1026         struct string_list_item *item;
1027         int n;
1028         if ((n = strlen(push_item->string)) > show_info->width)
1029                 show_info->width = n;
1030         if ((n = strlen(push_info->dest)) > show_info->width2)
1031                 show_info->width2 = n;
1032         item = string_list_append(show_info->list, push_item->string);
1033         item->util = push_item->util;
1034         return 0;
1035 }
1036
1037 /*
1038  * Sorting comparison for a string list that has push_info
1039  * structs in its util field
1040  */
1041 static int cmp_string_with_push(const void *va, const void *vb)
1042 {
1043         const struct string_list_item *a = va;
1044         const struct string_list_item *b = vb;
1045         const struct push_info *a_push = a->util;
1046         const struct push_info *b_push = b->util;
1047         int cmp = strcmp(a->string, b->string);
1048         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1049 }
1050
1051 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1052 {
1053         struct show_info *show_info = cb_data;
1054         struct push_info *push_info = item->util;
1055         const char *src = item->string, *status = NULL;
1056
1057         switch (push_info->status) {
1058         case PUSH_STATUS_CREATE:
1059                 status = _("create");
1060                 break;
1061         case PUSH_STATUS_DELETE:
1062                 status = _("delete");
1063                 src = _("(none)");
1064                 break;
1065         case PUSH_STATUS_UPTODATE:
1066                 status = _("up to date");
1067                 break;
1068         case PUSH_STATUS_FASTFORWARD:
1069                 status = _("fast-forwardable");
1070                 break;
1071         case PUSH_STATUS_OUTOFDATE:
1072                 status = _("local out of date");
1073                 break;
1074         case PUSH_STATUS_NOTQUERIED:
1075                 break;
1076         }
1077         if (status) {
1078                 if (push_info->forced)
1079                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1080                                show_info->width2, push_info->dest, status);
1081                 else
1082                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1083                                show_info->width2, push_info->dest, status);
1084         } else {
1085                 if (push_info->forced)
1086                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1087                                push_info->dest);
1088                 else
1089                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1090                                push_info->dest);
1091         }
1092         return 0;
1093 }
1094
1095 static int get_one_entry(struct remote *remote, void *priv)
1096 {
1097         struct string_list *list = priv;
1098         struct strbuf url_buf = STRBUF_INIT;
1099         const char **url;
1100         int i, url_nr;
1101
1102         if (remote->url_nr > 0) {
1103                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1104                 string_list_append(list, remote->name)->util =
1105                                 strbuf_detach(&url_buf, NULL);
1106         } else
1107                 string_list_append(list, remote->name)->util = NULL;
1108         if (remote->pushurl_nr) {
1109                 url = remote->pushurl;
1110                 url_nr = remote->pushurl_nr;
1111         } else {
1112                 url = remote->url;
1113                 url_nr = remote->url_nr;
1114         }
1115         for (i = 0; i < url_nr; i++)
1116         {
1117                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1118                 string_list_append(list, remote->name)->util =
1119                                 strbuf_detach(&url_buf, NULL);
1120         }
1121
1122         return 0;
1123 }
1124
1125 static int show_all(void)
1126 {
1127         struct string_list list = STRING_LIST_INIT_NODUP;
1128         int result;
1129
1130         list.strdup_strings = 1;
1131         result = for_each_remote(get_one_entry, &list);
1132
1133         if (!result) {
1134                 int i;
1135
1136                 sort_string_list(&list);
1137                 for (i = 0; i < list.nr; i++) {
1138                         struct string_list_item *item = list.items + i;
1139                         if (verbose)
1140                                 printf("%s\t%s\n", item->string,
1141                                         item->util ? (const char *)item->util : "");
1142                         else {
1143                                 if (i && !strcmp((item - 1)->string, item->string))
1144                                         continue;
1145                                 printf("%s\n", item->string);
1146                         }
1147                 }
1148         }
1149         string_list_clear(&list, 1);
1150         return result;
1151 }
1152
1153 static int show(int argc, const char **argv)
1154 {
1155         int no_query = 0, result = 0, query_flag = 0;
1156         struct option options[] = {
1157                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1158                 OPT_END()
1159         };
1160         struct ref_states states;
1161         struct string_list info_list = STRING_LIST_INIT_NODUP;
1162         struct show_info info;
1163
1164         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1165                              0);
1166
1167         if (argc < 1)
1168                 return show_all();
1169
1170         if (!no_query)
1171                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1172
1173         memset(&states, 0, sizeof(states));
1174         memset(&info, 0, sizeof(info));
1175         info.states = &states;
1176         info.list = &info_list;
1177         for (; argc; argc--, argv++) {
1178                 int i;
1179                 const char **url;
1180                 int url_nr;
1181
1182                 get_remote_ref_states(*argv, &states, query_flag);
1183
1184                 printf_ln(_("* remote %s"), *argv);
1185                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1186                        states.remote->url[0] : _("(no URL)"));
1187                 if (states.remote->pushurl_nr) {
1188                         url = states.remote->pushurl;
1189                         url_nr = states.remote->pushurl_nr;
1190                 } else {
1191                         url = states.remote->url;
1192                         url_nr = states.remote->url_nr;
1193                 }
1194                 for (i = 0; i < url_nr; i++)
1195                         printf_ln(_("  Push  URL: %s"), url[i]);
1196                 if (!i)
1197                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1198                 if (no_query)
1199                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1200                 else if (!states.heads.nr)
1201                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1202                 else if (states.heads.nr == 1)
1203                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1204                 else {
1205                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1206                                  " may be one of the following):\n"));
1207                         for (i = 0; i < states.heads.nr; i++)
1208                                 printf("    %s\n", states.heads.items[i].string);
1209                 }
1210
1211                 /* remote branch info */
1212                 info.width = 0;
1213                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1214                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1215                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1216                 if (info.list->nr)
1217                         printf_ln(Q_("  Remote branch:%s",
1218                                      "  Remote branches:%s",
1219                                      info.list->nr),
1220                                   no_query ? _(" (status not queried)") : "");
1221                 for_each_string_list(info.list, show_remote_info_item, &info);
1222                 string_list_clear(info.list, 0);
1223
1224                 /* git pull info */
1225                 info.width = 0;
1226                 info.any_rebase = 0;
1227                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1228                 if (info.list->nr)
1229                         printf_ln(Q_("  Local branch configured for 'git pull':",
1230                                      "  Local branches configured for 'git pull':",
1231                                      info.list->nr));
1232                 for_each_string_list(info.list, show_local_info_item, &info);
1233                 string_list_clear(info.list, 0);
1234
1235                 /* git push info */
1236                 if (states.remote->mirror)
1237                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1238
1239                 info.width = info.width2 = 0;
1240                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1241                 qsort(info.list->items, info.list->nr,
1242                         sizeof(*info.list->items), cmp_string_with_push);
1243                 if (info.list->nr)
1244                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1245                                      "  Local refs configured for 'git push'%s:",
1246                                      info.list->nr),
1247                                   no_query ? _(" (status not queried)") : "");
1248                 for_each_string_list(info.list, show_push_info_item, &info);
1249                 string_list_clear(info.list, 0);
1250
1251                 free_remote_ref_states(&states);
1252         }
1253
1254         return result;
1255 }
1256
1257 static int set_head(int argc, const char **argv)
1258 {
1259         int i, opt_a = 0, opt_d = 0, result = 0;
1260         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1261         char *head_name = NULL;
1262
1263         struct option options[] = {
1264                 OPT_BOOL('a', "auto", &opt_a,
1265                          N_("set refs/remotes/<name>/HEAD according to remote")),
1266                 OPT_BOOL('d', "delete", &opt_d,
1267                          N_("delete refs/remotes/<name>/HEAD")),
1268                 OPT_END()
1269         };
1270         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1271                              0);
1272         if (argc)
1273                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1274
1275         if (!opt_a && !opt_d && argc == 2) {
1276                 head_name = xstrdup(argv[1]);
1277         } else if (opt_a && !opt_d && argc == 1) {
1278                 struct ref_states states;
1279                 memset(&states, 0, sizeof(states));
1280                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1281                 if (!states.heads.nr)
1282                         result |= error(_("Cannot determine remote HEAD"));
1283                 else if (states.heads.nr > 1) {
1284                         result |= error(_("Multiple remote HEAD branches. "
1285                                           "Please choose one explicitly with:"));
1286                         for (i = 0; i < states.heads.nr; i++)
1287                                 fprintf(stderr, "  git remote set-head %s %s\n",
1288                                         argv[0], states.heads.items[i].string);
1289                 } else
1290                         head_name = xstrdup(states.heads.items[0].string);
1291                 free_remote_ref_states(&states);
1292         } else if (opt_d && !opt_a && argc == 1) {
1293                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1294                         result |= error(_("Could not delete %s"), buf.buf);
1295         } else
1296                 usage_with_options(builtin_remote_sethead_usage, options);
1297
1298         if (head_name) {
1299                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1300                 /* make sure it's valid */
1301                 if (!ref_exists(buf2.buf))
1302                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1303                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1304                         result |= error(_("Could not setup %s"), buf.buf);
1305                 if (opt_a)
1306                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1307                 free(head_name);
1308         }
1309
1310         strbuf_release(&buf);
1311         strbuf_release(&buf2);
1312         return result;
1313 }
1314
1315 static int prune_remote(const char *remote, int dry_run)
1316 {
1317         int result = 0, i;
1318         struct ref_states states;
1319         struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1320         const char **delete_refs;
1321         const char *dangling_msg = dry_run
1322                 ? _(" %s will become dangling!")
1323                 : _(" %s has become dangling!");
1324
1325         memset(&states, 0, sizeof(states));
1326         get_remote_ref_states(remote, &states, GET_REF_STATES);
1327
1328         if (states.stale.nr) {
1329                 printf_ln(_("Pruning %s"), remote);
1330                 printf_ln(_("URL: %s"),
1331                        states.remote->url_nr
1332                        ? states.remote->url[0]
1333                        : _("(no URL)"));
1334
1335                 delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1336                 for (i = 0; i < states.stale.nr; i++)
1337                         delete_refs[i] = states.stale.items[i].util;
1338                 if (!dry_run)
1339                         result |= repack_without_refs(delete_refs,
1340                                                       states.stale.nr, NULL);
1341                 free(delete_refs);
1342         }
1343
1344         for (i = 0; i < states.stale.nr; i++) {
1345                 const char *refname = states.stale.items[i].util;
1346
1347                 string_list_insert(&delete_refs_list, refname);
1348
1349                 if (!dry_run)
1350                         result |= delete_ref(refname, NULL, 0);
1351
1352                 if (dry_run)
1353                         printf_ln(_(" * [would prune] %s"),
1354                                abbrev_ref(refname, "refs/remotes/"));
1355                 else
1356                         printf_ln(_(" * [pruned] %s"),
1357                                abbrev_ref(refname, "refs/remotes/"));
1358         }
1359
1360         warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1361         string_list_clear(&delete_refs_list, 0);
1362
1363         free_remote_ref_states(&states);
1364         return result;
1365 }
1366
1367 static int prune(int argc, const char **argv)
1368 {
1369         int dry_run = 0, result = 0;
1370         struct option options[] = {
1371                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1372                 OPT_END()
1373         };
1374
1375         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1376                              0);
1377
1378         if (argc < 1)
1379                 usage_with_options(builtin_remote_prune_usage, options);
1380
1381         for (; argc; argc--, argv++)
1382                 result |= prune_remote(*argv, dry_run);
1383
1384         return result;
1385 }
1386
1387 static int get_remote_default(const char *key, const char *value, void *priv)
1388 {
1389         if (strcmp(key, "remotes.default") == 0) {
1390                 int *found = priv;
1391                 *found = 1;
1392         }
1393         return 0;
1394 }
1395
1396 static int update(int argc, const char **argv)
1397 {
1398         int i, prune = -1;
1399         struct option options[] = {
1400                 OPT_BOOL('p', "prune", &prune,
1401                          N_("prune remotes after fetching")),
1402                 OPT_END()
1403         };
1404         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1405         int default_defined = 0;
1406         int retval;
1407
1408         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1409                              PARSE_OPT_KEEP_ARGV0);
1410
1411         argv_array_push(&fetch_argv, "fetch");
1412
1413         if (prune != -1)
1414                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1415         if (verbose)
1416                 argv_array_push(&fetch_argv, "-v");
1417         argv_array_push(&fetch_argv, "--multiple");
1418         if (argc < 2)
1419                 argv_array_push(&fetch_argv, "default");
1420         for (i = 1; i < argc; i++)
1421                 argv_array_push(&fetch_argv, argv[i]);
1422
1423         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1424                 git_config(get_remote_default, &default_defined);
1425                 if (!default_defined) {
1426                         argv_array_pop(&fetch_argv);
1427                         argv_array_push(&fetch_argv, "--all");
1428                 }
1429         }
1430
1431         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1432         argv_array_clear(&fetch_argv);
1433         return retval;
1434 }
1435
1436 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1437 {
1438         return git_config_set_multivar(key, NULL, NULL, 1);
1439 }
1440
1441 static int add_branches(struct remote *remote, const char **branches,
1442                         const char *key)
1443 {
1444         const char *remotename = remote->name;
1445         int mirror = remote->mirror;
1446         struct strbuf refspec = STRBUF_INIT;
1447
1448         for (; *branches; branches++)
1449                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1450                         strbuf_release(&refspec);
1451                         return 1;
1452                 }
1453
1454         strbuf_release(&refspec);
1455         return 0;
1456 }
1457
1458 static int set_remote_branches(const char *remotename, const char **branches,
1459                                 int add_mode)
1460 {
1461         struct strbuf key = STRBUF_INIT;
1462         struct remote *remote;
1463
1464         strbuf_addf(&key, "remote.%s.fetch", remotename);
1465
1466         if (!remote_is_configured(remotename))
1467                 die(_("No such remote '%s'"), remotename);
1468         remote = remote_get(remotename);
1469
1470         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1471                 strbuf_release(&key);
1472                 return 1;
1473         }
1474         if (add_branches(remote, branches, key.buf)) {
1475                 strbuf_release(&key);
1476                 return 1;
1477         }
1478
1479         strbuf_release(&key);
1480         return 0;
1481 }
1482
1483 static int set_branches(int argc, const char **argv)
1484 {
1485         int add_mode = 0;
1486         struct option options[] = {
1487                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1488                 OPT_END()
1489         };
1490
1491         argc = parse_options(argc, argv, NULL, options,
1492                              builtin_remote_setbranches_usage, 0);
1493         if (argc == 0) {
1494                 error(_("no remote specified"));
1495                 usage_with_options(builtin_remote_setbranches_usage, options);
1496         }
1497         argv[argc] = NULL;
1498
1499         return set_remote_branches(argv[0], argv + 1, add_mode);
1500 }
1501
1502 static int set_url(int argc, const char **argv)
1503 {
1504         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1505         int matches = 0, negative_matches = 0;
1506         const char *remotename = NULL;
1507         const char *newurl = NULL;
1508         const char *oldurl = NULL;
1509         struct remote *remote;
1510         regex_t old_regex;
1511         const char **urlset;
1512         int urlset_nr;
1513         struct strbuf name_buf = STRBUF_INIT;
1514         struct option options[] = {
1515                 OPT_BOOL('\0', "push", &push_mode,
1516                          N_("manipulate push URLs")),
1517                 OPT_BOOL('\0', "add", &add_mode,
1518                          N_("add URL")),
1519                 OPT_BOOL('\0', "delete", &delete_mode,
1520                             N_("delete URLs")),
1521                 OPT_END()
1522         };
1523         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1524                              PARSE_OPT_KEEP_ARGV0);
1525
1526         if (add_mode && delete_mode)
1527                 die(_("--add --delete doesn't make sense"));
1528
1529         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1530                 usage_with_options(builtin_remote_seturl_usage, options);
1531
1532         remotename = argv[1];
1533         newurl = argv[2];
1534         if (argc > 3)
1535                 oldurl = argv[3];
1536
1537         if (delete_mode)
1538                 oldurl = newurl;
1539
1540         if (!remote_is_configured(remotename))
1541                 die(_("No such remote '%s'"), remotename);
1542         remote = remote_get(remotename);
1543
1544         if (push_mode) {
1545                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1546                 urlset = remote->pushurl;
1547                 urlset_nr = remote->pushurl_nr;
1548         } else {
1549                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1550                 urlset = remote->url;
1551                 urlset_nr = remote->url_nr;
1552         }
1553
1554         /* Special cases that add new entry. */
1555         if ((!oldurl && !delete_mode) || add_mode) {
1556                 if (add_mode)
1557                         git_config_set_multivar(name_buf.buf, newurl,
1558                                 "^$", 0);
1559                 else
1560                         git_config_set(name_buf.buf, newurl);
1561                 strbuf_release(&name_buf);
1562                 return 0;
1563         }
1564
1565         /* Old URL specified. Demand that one matches. */
1566         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1567                 die(_("Invalid old URL pattern: %s"), oldurl);
1568
1569         for (i = 0; i < urlset_nr; i++)
1570                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1571                         matches++;
1572                 else
1573                         negative_matches++;
1574         if (!delete_mode && !matches)
1575                 die(_("No such URL found: %s"), oldurl);
1576         if (delete_mode && !negative_matches && !push_mode)
1577                 die(_("Will not delete all non-push URLs"));
1578
1579         regfree(&old_regex);
1580
1581         if (!delete_mode)
1582                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1583         else
1584                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1585         return 0;
1586 }
1587
1588 int cmd_remote(int argc, const char **argv, const char *prefix)
1589 {
1590         struct option options[] = {
1591                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1592                 OPT_END()
1593         };
1594         int result;
1595
1596         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1597                 PARSE_OPT_STOP_AT_NON_OPTION);
1598
1599         if (argc < 1)
1600                 result = show_all();
1601         else if (!strcmp(argv[0], "add"))
1602                 result = add(argc, argv);
1603         else if (!strcmp(argv[0], "rename"))
1604                 result = mv(argc, argv);
1605         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1606                 result = rm(argc, argv);
1607         else if (!strcmp(argv[0], "set-head"))
1608                 result = set_head(argc, argv);
1609         else if (!strcmp(argv[0], "set-branches"))
1610                 result = set_branches(argc, argv);
1611         else if (!strcmp(argv[0], "set-url"))
1612                 result = set_url(argc, argv);
1613         else if (!strcmp(argv[0], "show"))
1614                 result = show(argc, argv);
1615         else if (!strcmp(argv[0], "prune"))
1616                 result = prune(argc, argv);
1617         else if (!strcmp(argv[0], "update"))
1618                 result = update(argc, argv);
1619         else {
1620                 error(_("Unknown subcommand: %s"), argv[0]);
1621                 usage_with_options(builtin_remote_usage, options);
1622         }
1623
1624         return result ? 1 : 0;
1625 }