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         int 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         const char *abbrev = skip_prefix(name, prefix);
 254         if (abbrev)
 255                 return abbrev;
 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
 269                 key += 7;
 270                 if (ends_with(key, ".remote")) {
 271                         name = xstrndup(key, strlen(key) - 7);
 272                         type = REMOTE;
 273                 } else if (ends_with(key, ".merge")) {
 274                         name = xstrndup(key, strlen(key) - 6);
 275                         type = MERGE;
 276                 } else if (ends_with(key, ".rebase")) {
 277                         name = xstrndup(key, strlen(key) - 7);
 278                         type = REBASE;
 279                 } else
 280                         return 0;
 281
 282                 item = string_list_insert(&branch_list, name);
 283
 284                 if (!item->util)
 285                         item->util = xcalloc(1, sizeof(struct branch_info));
 286                 info = item->util;
 287                 if (type == REMOTE) {
 288                         if (info->remote_name)
 289                                 warning(_("more than one %s"), orig_key);
 290                         info->remote_name = xstrdup(value);
 291                 } else if (type == MERGE) {
 292                         char *space = strchr(value, ' ');
 293                         value = abbrev_branch(value);
 294                         while (space) {
 295                                 char *merge;
 296                                 merge = xstrndup(value, space - value);
 297                                 string_list_append(&info->merge, merge);
 298                                 value = abbrev_branch(space + 1);
 299                                 space = strchr(value, ' ');
 300                         }
 301                         string_list_append(&info->merge, xstrdup(value));
 302                 } else {
 303                         int v = git_config_maybe_bool(orig_key, value);
 304                         if (v >= 0)
 305                                 info->rebase = v;
 306                         else if (!strcmp(value, "preserve"))
 307                                 info->rebase = 1;
 308                 }
 309         }
 310         return 0;
 311 }
 312
 313 static void read_branches(void)
 314 {
 315         if (branch_list.nr)
 316                 return;
 317         git_config(config_read_branches, NULL);
 318 }
 319
 320 struct ref_states {
 321         struct remote *remote;
 322         struct string_list new, stale, tracked, heads, push;
 323         int queried;
 324 };
 325
 326 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 327 {
 328         struct ref *fetch_map = NULL, **tail = &fetch_map;
 329         struct ref *ref, *stale_refs;
 330         int i;
 331
 332         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 333                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 334                         die(_("Could not get fetch map for refspec %s"),
 335                                 states->remote->fetch_refspec[i]);
 336
 337         states->new.strdup_strings = 1;
 338         states->tracked.strdup_strings = 1;
 339         states->stale.strdup_strings = 1;
 340         for (ref = fetch_map; ref; ref = ref->next) {
 341                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 342                         string_list_append(&states->new, abbrev_branch(ref->name));
 343                 else
 344                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 345         }
 346         stale_refs = get_stale_heads(states->remote->fetch,
 347                                      states->remote->fetch_refspec_nr, fetch_map);
 348         for (ref = stale_refs; ref; ref = ref->next) {
 349                 struct string_list_item *item =
 350                         string_list_append(&states->stale, abbrev_branch(ref->name));
 351                 item->util = xstrdup(ref->name);
 352         }
 353         free_refs(stale_refs);
 354         free_refs(fetch_map);
 355
 356         sort_string_list(&states->new);
 357         sort_string_list(&states->tracked);
 358         sort_string_list(&states->stale);
 359
 360         return 0;
 361 }
 362
 363 struct push_info {
 364         char *dest;
 365         int forced;
 366         enum {
 367                 PUSH_STATUS_CREATE = 0,
 368                 PUSH_STATUS_DELETE,
 369                 PUSH_STATUS_UPTODATE,
 370                 PUSH_STATUS_FASTFORWARD,
 371                 PUSH_STATUS_OUTOFDATE,
 372                 PUSH_STATUS_NOTQUERIED
 373         } status;
 374 };
 375
 376 static int get_push_ref_states(const struct ref *remote_refs,
 377         struct ref_states *states)
 378 {
 379         struct remote *remote = states->remote;
 380         struct ref *ref, *local_refs, *push_map;
 381         if (remote->mirror)
 382                 return 0;
 383
 384         local_refs = get_local_heads();
 385         push_map = copy_ref_list(remote_refs);
 386
 387         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 388                         remote->push_refspec, MATCH_REFS_NONE);
 389
 390         states->push.strdup_strings = 1;
 391         for (ref = push_map; ref; ref = ref->next) {
 392                 struct string_list_item *item;
 393                 struct push_info *info;
 394
 395                 if (!ref->peer_ref)
 396                         continue;
 397                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 398
 399                 item = string_list_append(&states->push,
 400                                           abbrev_branch(ref->peer_ref->name));
 401                 item->util = xcalloc(1, sizeof(struct push_info));
 402                 info = item->util;
 403                 info->forced = ref->force;
 404                 info->dest = xstrdup(abbrev_branch(ref->name));
 405
 406                 if (is_null_sha1(ref->new_sha1)) {
 407                         info->status = PUSH_STATUS_DELETE;
 408                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 409                         info->status = PUSH_STATUS_UPTODATE;
 410                 else if (is_null_sha1(ref->old_sha1))
 411                         info->status = PUSH_STATUS_CREATE;
 412                 else if (has_sha1_file(ref->old_sha1) &&
 413                          ref_newer(ref->new_sha1, ref->old_sha1))
 414                         info->status = PUSH_STATUS_FASTFORWARD;
 415                 else
 416                         info->status = PUSH_STATUS_OUTOFDATE;
 417         }
 418         free_refs(local_refs);
 419         free_refs(push_map);
 420         return 0;
 421 }
 422
 423 static int get_push_ref_states_noquery(struct ref_states *states)
 424 {
 425         int i;
 426         struct remote *remote = states->remote;
 427         struct string_list_item *item;
 428         struct push_info *info;
 429
 430         if (remote->mirror)
 431                 return 0;
 432
 433         states->push.strdup_strings = 1;
 434         if (!remote->push_refspec_nr) {
 435                 item = string_list_append(&states->push, _("(matching)"));
 436                 info = item->util = xcalloc(1, sizeof(struct push_info));
 437                 info->status = PUSH_STATUS_NOTQUERIED;
 438                 info->dest = xstrdup(item->string);
 439         }
 440         for (i = 0; i < remote->push_refspec_nr; i++) {
 441                 struct refspec *spec = remote->push + i;
 442                 if (spec->matching)
 443                         item = string_list_append(&states->push, _("(matching)"));
 444                 else if (strlen(spec->src))
 445                         item = string_list_append(&states->push, spec->src);
 446                 else
 447                         item = string_list_append(&states->push, _("(delete)"));
 448
 449                 info = item->util = xcalloc(1, sizeof(struct push_info));
 450                 info->forced = spec->force;
 451                 info->status = PUSH_STATUS_NOTQUERIED;
 452                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 453         }
 454         return 0;
 455 }
 456
 457 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 458 {
 459         struct ref *ref, *matches;
 460         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 461         struct refspec refspec;
 462
 463         refspec.force = 0;
 464         refspec.pattern = 1;
 465         refspec.src = refspec.dst = "refs/heads/*";
 466         states->heads.strdup_strings = 1;
 467         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 468         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 469                                     fetch_map, 1);
 470         for (ref = matches; ref; ref = ref->next)
 471                 string_list_append(&states->heads, abbrev_branch(ref->name));
 472
 473         free_refs(fetch_map);
 474         free_refs(matches);
 475
 476         return 0;
 477 }
 478
 479 struct known_remote {
 480         struct known_remote *next;
 481         struct remote *remote;
 482 };
 483
 484 struct known_remotes {
 485         struct remote *to_delete;
 486         struct known_remote *list;
 487 };
 488
 489 static int add_known_remote(struct remote *remote, void *cb_data)
 490 {
 491         struct known_remotes *all = cb_data;
 492         struct known_remote *r;
 493
 494         if (!strcmp(all->to_delete->name, remote->name))
 495                 return 0;
 496
 497         r = xmalloc(sizeof(*r));
 498         r->remote = remote;
 499         r->next = all->list;
 500         all->list = r;
 501         return 0;
 502 }
 503
 504 struct branches_for_remote {
 505         struct remote *remote;
 506         struct string_list *branches, *skipped;
 507         struct known_remotes *keep;
 508 };
 509
 510 static int add_branch_for_removal(const char *refname,
 511         const unsigned char *sha1, int flags, void *cb_data)
 512 {
 513         struct branches_for_remote *branches = cb_data;
 514         struct refspec refspec;
 515         struct string_list_item *item;
 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         item = string_list_append(branches->branches, refname);
 546         item->util = xmalloc(20);
 547         hashcpy(item->util, sha1);
 548
 549         return 0;
 550 }
 551
 552 struct rename_info {
 553         const char *old;
 554         const char *new;
 555         struct string_list *remote_branches;
 556 };
 557
 558 static int read_remote_branches(const char *refname,
 559         const unsigned char *sha1, int flags, void *cb_data)
 560 {
 561         struct rename_info *rename = cb_data;
 562         struct strbuf buf = STRBUF_INIT;
 563         struct string_list_item *item;
 564         int flag;
 565         unsigned char orig_sha1[20];
 566         const char *symref;
 567
 568         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 569         if (starts_with(refname, buf.buf)) {
 570                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 571                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
 572                 if (flag & REF_ISSYMREF)
 573                         item->util = xstrdup(symref);
 574                 else
 575                         item->util = NULL;
 576         }
 577
 578         return 0;
 579 }
 580
 581 static int migrate_file(struct remote *remote)
 582 {
 583         struct strbuf buf = STRBUF_INIT;
 584         int i;
 585         char *path = NULL;
 586
 587         strbuf_addf(&buf, "remote.%s.url", remote->name);
 588         for (i = 0; i < remote->url_nr; i++)
 589                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 590                         return error(_("Could not append '%s' to '%s'"),
 591                                         remote->url[i], buf.buf);
 592         strbuf_reset(&buf);
 593         strbuf_addf(&buf, "remote.%s.push", remote->name);
 594         for (i = 0; i < remote->push_refspec_nr; i++)
 595                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 596                         return error(_("Could not append '%s' to '%s'"),
 597                                         remote->push_refspec[i], buf.buf);
 598         strbuf_reset(&buf);
 599         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 600         for (i = 0; i < remote->fetch_refspec_nr; i++)
 601                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 602                         return error(_("Could not append '%s' to '%s'"),
 603                                         remote->fetch_refspec[i], buf.buf);
 604         if (remote->origin == REMOTE_REMOTES)
 605                 path = git_path("remotes/%s", remote->name);
 606         else if (remote->origin == REMOTE_BRANCHES)
 607                 path = git_path("branches/%s", remote->name);
 608         if (path)
 609                 unlink_or_warn(path);
 610         return 0;
 611 }
 612
 613 static int mv(int argc, const char **argv)
 614 {
 615         struct option options[] = {
 616                 OPT_END()
 617         };
 618         struct remote *oldremote, *newremote;
 619         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 620                 old_remote_context = STRBUF_INIT;
 621         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 622         struct rename_info rename;
 623         int i, refspec_updated = 0;
 624
 625         if (argc != 3)
 626                 usage_with_options(builtin_remote_rename_usage, options);
 627
 628         rename.old = argv[1];
 629         rename.new = argv[2];
 630         rename.remote_branches = &remote_branches;
 631
 632         oldremote = remote_get(rename.old);
 633         if (!oldremote)
 634                 die(_("No such remote: %s"), rename.old);
 635
 636         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 637                 return migrate_file(oldremote);
 638
 639         newremote = remote_get(rename.new);
 640         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 641                 die(_("remote %s already exists."), rename.new);
 642
 643         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 644         if (!valid_fetch_refspec(buf.buf))
 645                 die(_("'%s' is not a valid remote name"), rename.new);
 646
 647         strbuf_reset(&buf);
 648         strbuf_addf(&buf, "remote.%s", rename.old);
 649         strbuf_addf(&buf2, "remote.%s", rename.new);
 650         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 651                 return error(_("Could not rename config section '%s' to '%s'"),
 652                                 buf.buf, buf2.buf);
 653
 654         strbuf_reset(&buf);
 655         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 656         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 657                 return error(_("Could not remove config section '%s'"), buf.buf);
 658         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 659         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 660                 char *ptr;
 661
 662                 strbuf_reset(&buf2);
 663                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 664                 ptr = strstr(buf2.buf, old_remote_context.buf);
 665                 if (ptr) {
 666                         refspec_updated = 1;
 667                         strbuf_splice(&buf2,
 668                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 669                                       strlen(rename.old), rename.new,
 670                                       strlen(rename.new));
 671                 } else
 672                         warning(_("Not updating non-default fetch refspec\n"
 673                                   "\t%s\n"
 674                                   "\tPlease update the configuration manually if necessary."),
 675                                 buf2.buf);
 676
 677                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 678                         return error(_("Could not append '%s'"), buf.buf);
 679         }
 680
 681         read_branches();
 682         for (i = 0; i < branch_list.nr; i++) {
 683                 struct string_list_item *item = branch_list.items + i;
 684                 struct branch_info *info = item->util;
 685                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 686                         strbuf_reset(&buf);
 687                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 688                         if (git_config_set(buf.buf, rename.new)) {
 689                                 return error(_("Could not set '%s'"), buf.buf);
 690                         }
 691                 }
 692         }
 693
 694         if (!refspec_updated)
 695                 return 0;
 696
 697         /*
 698          * First remove symrefs, then rename the rest, finally create
 699          * the new symrefs.
 700          */
 701         for_each_ref(read_remote_branches, &rename);
 702         for (i = 0; i < remote_branches.nr; i++) {
 703                 struct string_list_item *item = remote_branches.items + i;
 704                 int flag = 0;
 705                 unsigned char sha1[20];
 706
 707                 read_ref_full(item->string, sha1, 1, &flag);
 708                 if (!(flag & REF_ISSYMREF))
 709                         continue;
 710                 if (delete_ref(item->string, NULL, REF_NODEREF))
 711                         die(_("deleting '%s' failed"), item->string);
 712         }
 713         for (i = 0; i < remote_branches.nr; i++) {
 714                 struct string_list_item *item = remote_branches.items + i;
 715
 716                 if (item->util)
 717                         continue;
 718                 strbuf_reset(&buf);
 719                 strbuf_addstr(&buf, item->string);
 720                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 721                                 rename.new, strlen(rename.new));
 722                 strbuf_reset(&buf2);
 723                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 724                                 item->string, buf.buf);
 725                 if (rename_ref(item->string, buf.buf, buf2.buf))
 726                         die(_("renaming '%s' failed"), item->string);
 727         }
 728         for (i = 0; i < remote_branches.nr; i++) {
 729                 struct string_list_item *item = remote_branches.items + i;
 730
 731                 if (!item->util)
 732                         continue;
 733                 strbuf_reset(&buf);
 734                 strbuf_addstr(&buf, item->string);
 735                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 736                                 rename.new, strlen(rename.new));
 737                 strbuf_reset(&buf2);
 738                 strbuf_addstr(&buf2, item->util);
 739                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 740                                 rename.new, strlen(rename.new));
 741                 strbuf_reset(&buf3);
 742                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 743                                 item->string, buf.buf);
 744                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 745                         die(_("creating '%s' failed"), buf.buf);
 746         }
 747         return 0;
 748 }
 749
 750 static int remove_branches(struct string_list *branches)
 751 {
 752         const char **branch_names;
 753         int i, result = 0;
 754
 755         branch_names = xmalloc(branches->nr * sizeof(*branch_names));
 756         for (i = 0; i < branches->nr; i++)
 757                 branch_names[i] = branches->items[i].string;
 758         result |= repack_without_refs(branch_names, branches->nr);
 759         free(branch_names);
 760
 761         for (i = 0; i < branches->nr; i++) {
 762                 struct string_list_item *item = branches->items + i;
 763                 const char *refname = item->string;
 764
 765                 if (delete_ref(refname, NULL, 0))
 766                         result |= error(_("Could not remove branch %s"), refname);
 767         }
 768
 769         return result;
 770 }
 771
 772 static int rm(int argc, const char **argv)
 773 {
 774         struct option options[] = {
 775                 OPT_END()
 776         };
 777         struct remote *remote;
 778         struct strbuf buf = STRBUF_INIT;
 779         struct known_remotes known_remotes = { NULL, NULL };
 780         struct string_list branches = STRING_LIST_INIT_DUP;
 781         struct string_list skipped = STRING_LIST_INIT_DUP;
 782         struct branches_for_remote cb_data;
 783         int i, result;
 784
 785         memset(&cb_data, 0, sizeof(cb_data));
 786         cb_data.branches = &branches;
 787         cb_data.skipped = &skipped;
 788         cb_data.keep = &known_remotes;
 789
 790         if (argc != 2)
 791                 usage_with_options(builtin_remote_rm_usage, options);
 792
 793         remote = remote_get(argv[1]);
 794         if (!remote)
 795                 die(_("No such remote: %s"), argv[1]);
 796
 797         known_remotes.to_delete = remote;
 798         for_each_remote(add_known_remote, &known_remotes);
 799
 800         read_branches();
 801         for (i = 0; i < branch_list.nr; i++) {
 802                 struct string_list_item *item = branch_list.items + i;
 803                 struct branch_info *info = item->util;
 804                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 805                         const char *keys[] = { "remote", "merge", NULL }, **k;
 806                         for (k = keys; *k; k++) {
 807                                 strbuf_reset(&buf);
 808                                 strbuf_addf(&buf, "branch.%s.%s",
 809                                                 item->string, *k);
 810                                 if (git_config_set(buf.buf, NULL)) {
 811                                         strbuf_release(&buf);
 812                                         return -1;
 813                                 }
 814                         }
 815                 }
 816         }
 817
 818         /*
 819          * We cannot just pass a function to for_each_ref() which deletes
 820          * the branches one by one, since for_each_ref() relies on cached
 821          * refs, which are invalidated when deleting a branch.
 822          */
 823         cb_data.remote = remote;
 824         result = for_each_ref(add_branch_for_removal, &cb_data);
 825         strbuf_release(&buf);
 826
 827         if (!result)
 828                 result = remove_branches(&branches);
 829         string_list_clear(&branches, 1);
 830
 831         if (skipped.nr) {
 832                 fprintf_ln(stderr,
 833                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 834                               "to delete it, use:",
 835                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 836                               "to delete them, use:",
 837                               skipped.nr));
 838                 for (i = 0; i < skipped.nr; i++)
 839                         fprintf(stderr, "  git branch -d %s\n",
 840                                 skipped.items[i].string);
 841         }
 842         string_list_clear(&skipped, 0);
 843
 844         if (!result) {
 845                 strbuf_addf(&buf, "remote.%s", remote->name);
 846                 if (git_config_rename_section(buf.buf, NULL) < 1)
 847                         return error(_("Could not remove config section '%s'"), buf.buf);
 848         }
 849
 850         return result;
 851 }
 852
 853 static void clear_push_info(void *util, const char *string)
 854 {
 855         struct push_info *info = util;
 856         free(info->dest);
 857         free(info);
 858 }
 859
 860 static void free_remote_ref_states(struct ref_states *states)
 861 {
 862         string_list_clear(&states->new, 0);
 863         string_list_clear(&states->stale, 1);
 864         string_list_clear(&states->tracked, 0);
 865         string_list_clear(&states->heads, 0);
 866         string_list_clear_func(&states->push, clear_push_info);
 867 }
 868
 869 static int append_ref_to_tracked_list(const char *refname,
 870         const unsigned char *sha1, int flags, void *cb_data)
 871 {
 872         struct ref_states *states = cb_data;
 873         struct refspec refspec;
 874
 875         if (flags & REF_ISSYMREF)
 876                 return 0;
 877
 878         memset(&refspec, 0, sizeof(refspec));
 879         refspec.dst = (char *)refname;
 880         if (!remote_find_tracking(states->remote, &refspec))
 881                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 882
 883         return 0;
 884 }
 885
 886 static int get_remote_ref_states(const char *name,
 887                                  struct ref_states *states,
 888                                  int query)
 889 {
 890         struct transport *transport;
 891         const struct ref *remote_refs;
 892
 893         states->remote = remote_get(name);
 894         if (!states->remote)
 895                 return error(_("No such remote: %s"), name);
 896
 897         read_branches();
 898
 899         if (query) {
 900                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 901                         states->remote->url[0] : NULL);
 902                 remote_refs = transport_get_remote_refs(transport);
 903                 transport_disconnect(transport);
 904
 905                 states->queried = 1;
 906                 if (query & GET_REF_STATES)
 907                         get_ref_states(remote_refs, states);
 908                 if (query & GET_HEAD_NAMES)
 909                         get_head_names(remote_refs, states);
 910                 if (query & GET_PUSH_REF_STATES)
 911                         get_push_ref_states(remote_refs, states);
 912         } else {
 913                 for_each_ref(append_ref_to_tracked_list, states);
 914                 sort_string_list(&states->tracked);
 915                 get_push_ref_states_noquery(states);
 916         }
 917
 918         return 0;
 919 }
 920
 921 struct show_info {
 922         struct string_list *list;
 923         struct ref_states *states;
 924         int width, width2;
 925         int any_rebase;
 926 };
 927
 928 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 929 {
 930         struct show_info *info = cb_data;
 931         int n = strlen(item->string);
 932         if (n > info->width)
 933                 info->width = n;
 934         string_list_insert(info->list, item->string);
 935         return 0;
 936 }
 937
 938 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 939 {
 940         struct show_info *info = cb_data;
 941         struct ref_states *states = info->states;
 942         const char *name = item->string;
 943
 944         if (states->queried) {
 945                 const char *fmt = "%s";
 946                 const char *arg = "";
 947                 if (string_list_has_string(&states->new, name)) {
 948                         fmt = _(" new (next fetch will store in remotes/%s)");
 949                         arg = states->remote->name;
 950                 } else if (string_list_has_string(&states->tracked, name))
 951                         arg = _(" tracked");
 952                 else if (string_list_has_string(&states->stale, name))
 953                         arg = _(" stale (use 'git remote prune' to remove)");
 954                 else
 955                         arg = _(" ???");
 956                 printf("    %-*s", info->width, name);
 957                 printf(fmt, arg);
 958                 printf("\n");
 959         } else
 960                 printf("    %s\n", name);
 961
 962         return 0;
 963 }
 964
 965 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 966 {
 967         struct show_info *show_info = cb_data;
 968         struct ref_states *states = show_info->states;
 969         struct branch_info *branch_info = branch_item->util;
 970         struct string_list_item *item;
 971         int n;
 972
 973         if (!branch_info->merge.nr || !branch_info->remote_name ||
 974             strcmp(states->remote->name, branch_info->remote_name))
 975                 return 0;
 976         if ((n = strlen(branch_item->string)) > show_info->width)
 977                 show_info->width = n;
 978         if (branch_info->rebase)
 979                 show_info->any_rebase = 1;
 980
 981         item = string_list_insert(show_info->list, branch_item->string);
 982         item->util = branch_info;
 983
 984         return 0;
 985 }
 986
 987 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 988 {
 989         struct show_info *show_info = cb_data;
 990         struct branch_info *branch_info = item->util;
 991         struct string_list *merge = &branch_info->merge;
 992         const char *also;
 993         int i;
 994
 995         if (branch_info->rebase && branch_info->merge.nr > 1) {
 996                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 997                         item->string);
 998                 return 0;
 999         }
1000
1001         printf("    %-*s ", show_info->width, item->string);
1002         if (branch_info->rebase) {
1003                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1004                 return 0;
1005         } else if (show_info->any_rebase) {
1006                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1007                 also = _("    and with remote");
1008         } else {
1009                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1010                 also = _("   and with remote");
1011         }
1012         for (i = 1; i < merge->nr; i++)
1013                 printf("    %-*s %s %s\n", show_info->width, "", also,
1014                        merge->items[i].string);
1015
1016         return 0;
1017 }
1018
1019 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1020 {
1021         struct show_info *show_info = cb_data;
1022         struct push_info *push_info = push_item->util;
1023         struct string_list_item *item;
1024         int n;
1025         if ((n = strlen(push_item->string)) > show_info->width)
1026                 show_info->width = n;
1027         if ((n = strlen(push_info->dest)) > show_info->width2)
1028                 show_info->width2 = n;
1029         item = string_list_append(show_info->list, push_item->string);
1030         item->util = push_item->util;
1031         return 0;
1032 }
1033
1034 /*
1035  * Sorting comparison for a string list that has push_info
1036  * structs in its util field
1037  */
1038 static int cmp_string_with_push(const void *va, const void *vb)
1039 {
1040         const struct string_list_item *a = va;
1041         const struct string_list_item *b = vb;
1042         const struct push_info *a_push = a->util;
1043         const struct push_info *b_push = b->util;
1044         int cmp = strcmp(a->string, b->string);
1045         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1046 }
1047
1048 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1049 {
1050         struct show_info *show_info = cb_data;
1051         struct push_info *push_info = item->util;
1052         const char *src = item->string, *status = NULL;
1053
1054         switch (push_info->status) {
1055         case PUSH_STATUS_CREATE:
1056                 status = _("create");
1057                 break;
1058         case PUSH_STATUS_DELETE:
1059                 status = _("delete");
1060                 src = _("(none)");
1061                 break;
1062         case PUSH_STATUS_UPTODATE:
1063                 status = _("up to date");
1064                 break;
1065         case PUSH_STATUS_FASTFORWARD:
1066                 status = _("fast-forwardable");
1067                 break;
1068         case PUSH_STATUS_OUTOFDATE:
1069                 status = _("local out of date");
1070                 break;
1071         case PUSH_STATUS_NOTQUERIED:
1072                 break;
1073         }
1074         if (status) {
1075                 if (push_info->forced)
1076                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1077                                show_info->width2, push_info->dest, status);
1078                 else
1079                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1080                                show_info->width2, push_info->dest, status);
1081         } else {
1082                 if (push_info->forced)
1083                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1084                                push_info->dest);
1085                 else
1086                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1087                                push_info->dest);
1088         }
1089         return 0;
1090 }
1091
1092 static int get_one_entry(struct remote *remote, void *priv)
1093 {
1094         struct string_list *list = priv;
1095         struct strbuf url_buf = STRBUF_INIT;
1096         const char **url;
1097         int i, url_nr;
1098
1099         if (remote->url_nr > 0) {
1100                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1101                 string_list_append(list, remote->name)->util =
1102                                 strbuf_detach(&url_buf, NULL);
1103         } else
1104                 string_list_append(list, remote->name)->util = NULL;
1105         if (remote->pushurl_nr) {
1106                 url = remote->pushurl;
1107                 url_nr = remote->pushurl_nr;
1108         } else {
1109                 url = remote->url;
1110                 url_nr = remote->url_nr;
1111         }
1112         for (i = 0; i < url_nr; i++)
1113         {
1114                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1115                 string_list_append(list, remote->name)->util =
1116                                 strbuf_detach(&url_buf, NULL);
1117         }
1118
1119         return 0;
1120 }
1121
1122 static int show_all(void)
1123 {
1124         struct string_list list = STRING_LIST_INIT_NODUP;
1125         int result;
1126
1127         list.strdup_strings = 1;
1128         result = for_each_remote(get_one_entry, &list);
1129
1130         if (!result) {
1131                 int i;
1132
1133                 sort_string_list(&list);
1134                 for (i = 0; i < list.nr; i++) {
1135                         struct string_list_item *item = list.items + i;
1136                         if (verbose)
1137                                 printf("%s\t%s\n", item->string,
1138                                         item->util ? (const char *)item->util : "");
1139                         else {
1140                                 if (i && !strcmp((item - 1)->string, item->string))
1141                                         continue;
1142                                 printf("%s\n", item->string);
1143                         }
1144                 }
1145         }
1146         string_list_clear(&list, 1);
1147         return result;
1148 }
1149
1150 static int show(int argc, const char **argv)
1151 {
1152         int no_query = 0, result = 0, query_flag = 0;
1153         struct option options[] = {
1154                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1155                 OPT_END()
1156         };
1157         struct ref_states states;
1158         struct string_list info_list = STRING_LIST_INIT_NODUP;
1159         struct show_info info;
1160
1161         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1162                              0);
1163
1164         if (argc < 1)
1165                 return show_all();
1166
1167         if (!no_query)
1168                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1169
1170         memset(&states, 0, sizeof(states));
1171         memset(&info, 0, sizeof(info));
1172         info.states = &states;
1173         info.list = &info_list;
1174         for (; argc; argc--, argv++) {
1175                 int i;
1176                 const char **url;
1177                 int url_nr;
1178
1179                 get_remote_ref_states(*argv, &states, query_flag);
1180
1181                 printf_ln(_("* remote %s"), *argv);
1182                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1183                        states.remote->url[0] : _("(no URL)"));
1184                 if (states.remote->pushurl_nr) {
1185                         url = states.remote->pushurl;
1186                         url_nr = states.remote->pushurl_nr;
1187                 } else {
1188                         url = states.remote->url;
1189                         url_nr = states.remote->url_nr;
1190                 }
1191                 for (i = 0; i < url_nr; i++)
1192                         printf_ln(_("  Push  URL: %s"), url[i]);
1193                 if (!i)
1194                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1195                 if (no_query)
1196                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1197                 else if (!states.heads.nr)
1198                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1199                 else if (states.heads.nr == 1)
1200                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1201                 else {
1202                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1203                                  " may be one of the following):\n"));
1204                         for (i = 0; i < states.heads.nr; i++)
1205                                 printf("    %s\n", states.heads.items[i].string);
1206                 }
1207
1208                 /* remote branch info */
1209                 info.width = 0;
1210                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1211                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1212                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1213                 if (info.list->nr)
1214                         printf_ln(Q_("  Remote branch:%s",
1215                                      "  Remote branches:%s",
1216                                      info.list->nr),
1217                                   no_query ? _(" (status not queried)") : "");
1218                 for_each_string_list(info.list, show_remote_info_item, &info);
1219                 string_list_clear(info.list, 0);
1220
1221                 /* git pull info */
1222                 info.width = 0;
1223                 info.any_rebase = 0;
1224                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1225                 if (info.list->nr)
1226                         printf_ln(Q_("  Local branch configured for 'git pull':",
1227                                      "  Local branches configured for 'git pull':",
1228                                      info.list->nr));
1229                 for_each_string_list(info.list, show_local_info_item, &info);
1230                 string_list_clear(info.list, 0);
1231
1232                 /* git push info */
1233                 if (states.remote->mirror)
1234                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1235
1236                 info.width = info.width2 = 0;
1237                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1238                 qsort(info.list->items, info.list->nr,
1239                         sizeof(*info.list->items), cmp_string_with_push);
1240                 if (info.list->nr)
1241                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1242                                      "  Local refs configured for 'git push'%s:",
1243                                      info.list->nr),
1244                                   no_query ? _(" (status not queried)") : "");
1245                 for_each_string_list(info.list, show_push_info_item, &info);
1246                 string_list_clear(info.list, 0);
1247
1248                 free_remote_ref_states(&states);
1249         }
1250
1251         return result;
1252 }
1253
1254 static int set_head(int argc, const char **argv)
1255 {
1256         int i, opt_a = 0, opt_d = 0, result = 0;
1257         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1258         char *head_name = NULL;
1259
1260         struct option options[] = {
1261                 OPT_BOOL('a', "auto", &opt_a,
1262                          N_("set refs/remotes/<name>/HEAD according to remote")),
1263                 OPT_BOOL('d', "delete", &opt_d,
1264                          N_("delete refs/remotes/<name>/HEAD")),
1265                 OPT_END()
1266         };
1267         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1268                              0);
1269         if (argc)
1270                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1271
1272         if (!opt_a && !opt_d && argc == 2) {
1273                 head_name = xstrdup(argv[1]);
1274         } else if (opt_a && !opt_d && argc == 1) {
1275                 struct ref_states states;
1276                 memset(&states, 0, sizeof(states));
1277                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1278                 if (!states.heads.nr)
1279                         result |= error(_("Cannot determine remote HEAD"));
1280                 else if (states.heads.nr > 1) {
1281                         result |= error(_("Multiple remote HEAD branches. "
1282                                           "Please choose one explicitly with:"));
1283                         for (i = 0; i < states.heads.nr; i++)
1284                                 fprintf(stderr, "  git remote set-head %s %s\n",
1285                                         argv[0], states.heads.items[i].string);
1286                 } else
1287                         head_name = xstrdup(states.heads.items[0].string);
1288                 free_remote_ref_states(&states);
1289         } else if (opt_d && !opt_a && argc == 1) {
1290                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1291                         result |= error(_("Could not delete %s"), buf.buf);
1292         } else
1293                 usage_with_options(builtin_remote_sethead_usage, options);
1294
1295         if (head_name) {
1296                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1297                 /* make sure it's valid */
1298                 if (!ref_exists(buf2.buf))
1299                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1300                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1301                         result |= error(_("Could not setup %s"), buf.buf);
1302                 if (opt_a)
1303                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1304                 free(head_name);
1305         }
1306
1307         strbuf_release(&buf);
1308         strbuf_release(&buf2);
1309         return result;
1310 }
1311
1312 static int prune_remote(const char *remote, int dry_run)
1313 {
1314         int result = 0, i;
1315         struct ref_states states;
1316         struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1317         const char **delete_refs;
1318         const char *dangling_msg = dry_run
1319                 ? _(" %s will become dangling!")
1320                 : _(" %s has become dangling!");
1321
1322         memset(&states, 0, sizeof(states));
1323         get_remote_ref_states(remote, &states, GET_REF_STATES);
1324
1325         if (states.stale.nr) {
1326                 printf_ln(_("Pruning %s"), remote);
1327                 printf_ln(_("URL: %s"),
1328                        states.remote->url_nr
1329                        ? states.remote->url[0]
1330                        : _("(no URL)"));
1331
1332                 delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1333                 for (i = 0; i < states.stale.nr; i++)
1334                         delete_refs[i] = states.stale.items[i].util;
1335                 if (!dry_run)
1336                         result |= repack_without_refs(delete_refs, states.stale.nr);
1337                 free(delete_refs);
1338         }
1339
1340         for (i = 0; i < states.stale.nr; i++) {
1341                 const char *refname = states.stale.items[i].util;
1342
1343                 string_list_insert(&delete_refs_list, refname);
1344
1345                 if (!dry_run)
1346                         result |= delete_ref(refname, NULL, 0);
1347
1348                 if (dry_run)
1349                         printf_ln(_(" * [would prune] %s"),
1350                                abbrev_ref(refname, "refs/remotes/"));
1351                 else
1352                         printf_ln(_(" * [pruned] %s"),
1353                                abbrev_ref(refname, "refs/remotes/"));
1354         }
1355
1356         warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1357         string_list_clear(&delete_refs_list, 0);
1358
1359         free_remote_ref_states(&states);
1360         return result;
1361 }
1362
1363 static int prune(int argc, const char **argv)
1364 {
1365         int dry_run = 0, result = 0;
1366         struct option options[] = {
1367                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1368                 OPT_END()
1369         };
1370
1371         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1372                              0);
1373
1374         if (argc < 1)
1375                 usage_with_options(builtin_remote_prune_usage, options);
1376
1377         for (; argc; argc--, argv++)
1378                 result |= prune_remote(*argv, dry_run);
1379
1380         return result;
1381 }
1382
1383 static int get_remote_default(const char *key, const char *value, void *priv)
1384 {
1385         if (strcmp(key, "remotes.default") == 0) {
1386                 int *found = priv;
1387                 *found = 1;
1388         }
1389         return 0;
1390 }
1391
1392 static int update(int argc, const char **argv)
1393 {
1394         int i, prune = -1;
1395         struct option options[] = {
1396                 OPT_BOOL('p', "prune", &prune,
1397                          N_("prune remotes after fetching")),
1398                 OPT_END()
1399         };
1400         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1401         int default_defined = 0;
1402         int retval;
1403
1404         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1405                              PARSE_OPT_KEEP_ARGV0);
1406
1407         argv_array_push(&fetch_argv, "fetch");
1408
1409         if (prune != -1)
1410                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1411         if (verbose)
1412                 argv_array_push(&fetch_argv, "-v");
1413         argv_array_push(&fetch_argv, "--multiple");
1414         if (argc < 2)
1415                 argv_array_push(&fetch_argv, "default");
1416         for (i = 1; i < argc; i++)
1417                 argv_array_push(&fetch_argv, argv[i]);
1418
1419         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1420                 git_config(get_remote_default, &default_defined);
1421                 if (!default_defined) {
1422                         argv_array_pop(&fetch_argv);
1423                         argv_array_push(&fetch_argv, "--all");
1424                 }
1425         }
1426
1427         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1428         argv_array_clear(&fetch_argv);
1429         return retval;
1430 }
1431
1432 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1433 {
1434         return git_config_set_multivar(key, NULL, NULL, 1);
1435 }
1436
1437 static int add_branches(struct remote *remote, const char **branches,
1438                         const char *key)
1439 {
1440         const char *remotename = remote->name;
1441         int mirror = remote->mirror;
1442         struct strbuf refspec = STRBUF_INIT;
1443
1444         for (; *branches; branches++)
1445                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1446                         strbuf_release(&refspec);
1447                         return 1;
1448                 }
1449
1450         strbuf_release(&refspec);
1451         return 0;
1452 }
1453
1454 static int set_remote_branches(const char *remotename, const char **branches,
1455                                 int add_mode)
1456 {
1457         struct strbuf key = STRBUF_INIT;
1458         struct remote *remote;
1459
1460         strbuf_addf(&key, "remote.%s.fetch", remotename);
1461
1462         if (!remote_is_configured(remotename))
1463                 die(_("No such remote '%s'"), remotename);
1464         remote = remote_get(remotename);
1465
1466         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1467                 strbuf_release(&key);
1468                 return 1;
1469         }
1470         if (add_branches(remote, branches, key.buf)) {
1471                 strbuf_release(&key);
1472                 return 1;
1473         }
1474
1475         strbuf_release(&key);
1476         return 0;
1477 }
1478
1479 static int set_branches(int argc, const char **argv)
1480 {
1481         int add_mode = 0;
1482         struct option options[] = {
1483                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1484                 OPT_END()
1485         };
1486
1487         argc = parse_options(argc, argv, NULL, options,
1488                              builtin_remote_setbranches_usage, 0);
1489         if (argc == 0) {
1490                 error(_("no remote specified"));
1491                 usage_with_options(builtin_remote_setbranches_usage, options);
1492         }
1493         argv[argc] = NULL;
1494
1495         return set_remote_branches(argv[0], argv + 1, add_mode);
1496 }
1497
1498 static int set_url(int argc, const char **argv)
1499 {
1500         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1501         int matches = 0, negative_matches = 0;
1502         const char *remotename = NULL;
1503         const char *newurl = NULL;
1504         const char *oldurl = NULL;
1505         struct remote *remote;
1506         regex_t old_regex;
1507         const char **urlset;
1508         int urlset_nr;
1509         struct strbuf name_buf = STRBUF_INIT;
1510         struct option options[] = {
1511                 OPT_BOOL('\0', "push", &push_mode,
1512                          N_("manipulate push URLs")),
1513                 OPT_BOOL('\0', "add", &add_mode,
1514                          N_("add URL")),
1515                 OPT_BOOL('\0', "delete", &delete_mode,
1516                             N_("delete URLs")),
1517                 OPT_END()
1518         };
1519         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1520                              PARSE_OPT_KEEP_ARGV0);
1521
1522         if (add_mode && delete_mode)
1523                 die(_("--add --delete doesn't make sense"));
1524
1525         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1526                 usage_with_options(builtin_remote_seturl_usage, options);
1527
1528         remotename = argv[1];
1529         newurl = argv[2];
1530         if (argc > 3)
1531                 oldurl = argv[3];
1532
1533         if (delete_mode)
1534                 oldurl = newurl;
1535
1536         if (!remote_is_configured(remotename))
1537                 die(_("No such remote '%s'"), remotename);
1538         remote = remote_get(remotename);
1539
1540         if (push_mode) {
1541                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1542                 urlset = remote->pushurl;
1543                 urlset_nr = remote->pushurl_nr;
1544         } else {
1545                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1546                 urlset = remote->url;
1547                 urlset_nr = remote->url_nr;
1548         }
1549
1550         /* Special cases that add new entry. */
1551         if ((!oldurl && !delete_mode) || add_mode) {
1552                 if (add_mode)
1553                         git_config_set_multivar(name_buf.buf, newurl,
1554                                 "^$", 0);
1555                 else
1556                         git_config_set(name_buf.buf, newurl);
1557                 strbuf_release(&name_buf);
1558                 return 0;
1559         }
1560
1561         /* Old URL specified. Demand that one matches. */
1562         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1563                 die(_("Invalid old URL pattern: %s"), oldurl);
1564
1565         for (i = 0; i < urlset_nr; i++)
1566                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1567                         matches++;
1568                 else
1569                         negative_matches++;
1570         if (!delete_mode && !matches)
1571                 die(_("No such URL found: %s"), oldurl);
1572         if (delete_mode && !negative_matches && !push_mode)
1573                 die(_("Will not delete all non-push URLs"));
1574
1575         regfree(&old_regex);
1576
1577         if (!delete_mode)
1578                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1579         else
1580                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1581         return 0;
1582 }
1583
1584 int cmd_remote(int argc, const char **argv, const char *prefix)
1585 {
1586         struct option options[] = {
1587                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1588                 OPT_END()
1589         };
1590         int result;
1591
1592         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1593                 PARSE_OPT_STOP_AT_NON_OPTION);
1594
1595         if (argc < 1)
1596                 result = show_all();
1597         else if (!strcmp(argv[0], "add"))
1598                 result = add(argc, argv);
1599         else if (!strcmp(argv[0], "rename"))
1600                 result = mv(argc, argv);
1601         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1602                 result = rm(argc, argv);
1603         else if (!strcmp(argv[0], "set-head"))
1604                 result = set_head(argc, argv);
1605         else if (!strcmp(argv[0], "set-branches"))
1606                 result = set_branches(argc, argv);
1607         else if (!strcmp(argv[0], "set-url"))
1608                 result = set_url(argc, argv);
1609         else if (!strcmp(argv[0], "show"))
1610                 result = show(argc, argv);
1611         else if (!strcmp(argv[0], "prune"))
1612                 result = prune(argc, argv);
1613         else if (!strcmp(argv[0], "update"))
1614                 result = update(argc, argv);
1615         else {
1616                 error(_("Unknown subcommand: %s"), argv[0]);
1617                 usage_with_options(builtin_remote_usage, options);
1618         }
1619
1620         return result ? 1 : 0;
1621 }