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(sizeof(struct branch_info), 1);
 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(sizeof(struct push_info), 1);
 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(sizeof(struct push_info), 1);
 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(sizeof(struct push_info), 1);
 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         int i, result = 0;
 753         for (i = 0; i < branches->nr; i++) {
 754                 struct string_list_item *item = branches->items + i;
 755                 const char *refname = item->string;
 756                 unsigned char *sha1 = item->util;
 757
 758                 if (delete_ref(refname, sha1, 0))
 759                         result |= error(_("Could not remove branch %s"), refname);
 760         }
 761         return result;
 762 }
 763
 764 static int rm(int argc, const char **argv)
 765 {
 766         struct option options[] = {
 767                 OPT_END()
 768         };
 769         struct remote *remote;
 770         struct strbuf buf = STRBUF_INIT;
 771         struct known_remotes known_remotes = { NULL, NULL };
 772         struct string_list branches = STRING_LIST_INIT_DUP;
 773         struct string_list skipped = STRING_LIST_INIT_DUP;
 774         struct branches_for_remote cb_data;
 775         int i, result;
 776
 777         memset(&cb_data, 0, sizeof(cb_data));
 778         cb_data.branches = &branches;
 779         cb_data.skipped = &skipped;
 780         cb_data.keep = &known_remotes;
 781
 782         if (argc != 2)
 783                 usage_with_options(builtin_remote_rm_usage, options);
 784
 785         remote = remote_get(argv[1]);
 786         if (!remote)
 787                 die(_("No such remote: %s"), argv[1]);
 788
 789         known_remotes.to_delete = remote;
 790         for_each_remote(add_known_remote, &known_remotes);
 791
 792         strbuf_addf(&buf, "remote.%s", remote->name);
 793         if (git_config_rename_section(buf.buf, NULL) < 1)
 794                 return error(_("Could not remove config section '%s'"), buf.buf);
 795
 796         read_branches();
 797         for (i = 0; i < branch_list.nr; i++) {
 798                 struct string_list_item *item = branch_list.items + i;
 799                 struct branch_info *info = item->util;
 800                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 801                         const char *keys[] = { "remote", "merge", NULL }, **k;
 802                         for (k = keys; *k; k++) {
 803                                 strbuf_reset(&buf);
 804                                 strbuf_addf(&buf, "branch.%s.%s",
 805                                                 item->string, *k);
 806                                 if (git_config_set(buf.buf, NULL)) {
 807                                         strbuf_release(&buf);
 808                                         return -1;
 809                                 }
 810                         }
 811                 }
 812         }
 813
 814         /*
 815          * We cannot just pass a function to for_each_ref() which deletes
 816          * the branches one by one, since for_each_ref() relies on cached
 817          * refs, which are invalidated when deleting a branch.
 818          */
 819         cb_data.remote = remote;
 820         result = for_each_ref(add_branch_for_removal, &cb_data);
 821         strbuf_release(&buf);
 822
 823         if (!result)
 824                 result = remove_branches(&branches);
 825         string_list_clear(&branches, 1);
 826
 827         if (skipped.nr) {
 828                 fprintf_ln(stderr,
 829                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 830                               "to delete it, use:",
 831                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 832                               "to delete them, use:",
 833                               skipped.nr));
 834                 for (i = 0; i < skipped.nr; i++)
 835                         fprintf(stderr, "  git branch -d %s\n",
 836                                 skipped.items[i].string);
 837         }
 838         string_list_clear(&skipped, 0);
 839
 840         return result;
 841 }
 842
 843 static void clear_push_info(void *util, const char *string)
 844 {
 845         struct push_info *info = util;
 846         free(info->dest);
 847         free(info);
 848 }
 849
 850 static void free_remote_ref_states(struct ref_states *states)
 851 {
 852         string_list_clear(&states->new, 0);
 853         string_list_clear(&states->stale, 1);
 854         string_list_clear(&states->tracked, 0);
 855         string_list_clear(&states->heads, 0);
 856         string_list_clear_func(&states->push, clear_push_info);
 857 }
 858
 859 static int append_ref_to_tracked_list(const char *refname,
 860         const unsigned char *sha1, int flags, void *cb_data)
 861 {
 862         struct ref_states *states = cb_data;
 863         struct refspec refspec;
 864
 865         if (flags & REF_ISSYMREF)
 866                 return 0;
 867
 868         memset(&refspec, 0, sizeof(refspec));
 869         refspec.dst = (char *)refname;
 870         if (!remote_find_tracking(states->remote, &refspec))
 871                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 872
 873         return 0;
 874 }
 875
 876 static int get_remote_ref_states(const char *name,
 877                                  struct ref_states *states,
 878                                  int query)
 879 {
 880         struct transport *transport;
 881         const struct ref *remote_refs;
 882
 883         states->remote = remote_get(name);
 884         if (!states->remote)
 885                 return error(_("No such remote: %s"), name);
 886
 887         read_branches();
 888
 889         if (query) {
 890                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 891                         states->remote->url[0] : NULL);
 892                 remote_refs = transport_get_remote_refs(transport);
 893                 transport_disconnect(transport);
 894
 895                 states->queried = 1;
 896                 if (query & GET_REF_STATES)
 897                         get_ref_states(remote_refs, states);
 898                 if (query & GET_HEAD_NAMES)
 899                         get_head_names(remote_refs, states);
 900                 if (query & GET_PUSH_REF_STATES)
 901                         get_push_ref_states(remote_refs, states);
 902         } else {
 903                 for_each_ref(append_ref_to_tracked_list, states);
 904                 sort_string_list(&states->tracked);
 905                 get_push_ref_states_noquery(states);
 906         }
 907
 908         return 0;
 909 }
 910
 911 struct show_info {
 912         struct string_list *list;
 913         struct ref_states *states;
 914         int width, width2;
 915         int any_rebase;
 916 };
 917
 918 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 919 {
 920         struct show_info *info = cb_data;
 921         int n = strlen(item->string);
 922         if (n > info->width)
 923                 info->width = n;
 924         string_list_insert(info->list, item->string);
 925         return 0;
 926 }
 927
 928 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 929 {
 930         struct show_info *info = cb_data;
 931         struct ref_states *states = info->states;
 932         const char *name = item->string;
 933
 934         if (states->queried) {
 935                 const char *fmt = "%s";
 936                 const char *arg = "";
 937                 if (string_list_has_string(&states->new, name)) {
 938                         fmt = _(" new (next fetch will store in remotes/%s)");
 939                         arg = states->remote->name;
 940                 } else if (string_list_has_string(&states->tracked, name))
 941                         arg = _(" tracked");
 942                 else if (string_list_has_string(&states->stale, name))
 943                         arg = _(" stale (use 'git remote prune' to remove)");
 944                 else
 945                         arg = _(" ???");
 946                 printf("    %-*s", info->width, name);
 947                 printf(fmt, arg);
 948                 printf("\n");
 949         } else
 950                 printf("    %s\n", name);
 951
 952         return 0;
 953 }
 954
 955 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 956 {
 957         struct show_info *show_info = cb_data;
 958         struct ref_states *states = show_info->states;
 959         struct branch_info *branch_info = branch_item->util;
 960         struct string_list_item *item;
 961         int n;
 962
 963         if (!branch_info->merge.nr || !branch_info->remote_name ||
 964             strcmp(states->remote->name, branch_info->remote_name))
 965                 return 0;
 966         if ((n = strlen(branch_item->string)) > show_info->width)
 967                 show_info->width = n;
 968         if (branch_info->rebase)
 969                 show_info->any_rebase = 1;
 970
 971         item = string_list_insert(show_info->list, branch_item->string);
 972         item->util = branch_info;
 973
 974         return 0;
 975 }
 976
 977 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 978 {
 979         struct show_info *show_info = cb_data;
 980         struct branch_info *branch_info = item->util;
 981         struct string_list *merge = &branch_info->merge;
 982         const char *also;
 983         int i;
 984
 985         if (branch_info->rebase && branch_info->merge.nr > 1) {
 986                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 987                         item->string);
 988                 return 0;
 989         }
 990
 991         printf("    %-*s ", show_info->width, item->string);
 992         if (branch_info->rebase) {
 993                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
 994                 return 0;
 995         } else if (show_info->any_rebase) {
 996                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 997                 also = _("    and with remote");
 998         } else {
 999                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1000                 also = _("   and with remote");
1001         }
1002         for (i = 1; i < merge->nr; i++)
1003                 printf("    %-*s %s %s\n", show_info->width, "", also,
1004                        merge->items[i].string);
1005
1006         return 0;
1007 }
1008
1009 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1010 {
1011         struct show_info *show_info = cb_data;
1012         struct push_info *push_info = push_item->util;
1013         struct string_list_item *item;
1014         int n;
1015         if ((n = strlen(push_item->string)) > show_info->width)
1016                 show_info->width = n;
1017         if ((n = strlen(push_info->dest)) > show_info->width2)
1018                 show_info->width2 = n;
1019         item = string_list_append(show_info->list, push_item->string);
1020         item->util = push_item->util;
1021         return 0;
1022 }
1023
1024 /*
1025  * Sorting comparison for a string list that has push_info
1026  * structs in its util field
1027  */
1028 static int cmp_string_with_push(const void *va, const void *vb)
1029 {
1030         const struct string_list_item *a = va;
1031         const struct string_list_item *b = vb;
1032         const struct push_info *a_push = a->util;
1033         const struct push_info *b_push = b->util;
1034         int cmp = strcmp(a->string, b->string);
1035         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1036 }
1037
1038 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1039 {
1040         struct show_info *show_info = cb_data;
1041         struct push_info *push_info = item->util;
1042         const char *src = item->string, *status = NULL;
1043
1044         switch (push_info->status) {
1045         case PUSH_STATUS_CREATE:
1046                 status = _("create");
1047                 break;
1048         case PUSH_STATUS_DELETE:
1049                 status = _("delete");
1050                 src = _("(none)");
1051                 break;
1052         case PUSH_STATUS_UPTODATE:
1053                 status = _("up to date");
1054                 break;
1055         case PUSH_STATUS_FASTFORWARD:
1056                 status = _("fast-forwardable");
1057                 break;
1058         case PUSH_STATUS_OUTOFDATE:
1059                 status = _("local out of date");
1060                 break;
1061         case PUSH_STATUS_NOTQUERIED:
1062                 break;
1063         }
1064         if (status) {
1065                 if (push_info->forced)
1066                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1067                                show_info->width2, push_info->dest, status);
1068                 else
1069                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1070                                show_info->width2, push_info->dest, status);
1071         } else {
1072                 if (push_info->forced)
1073                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1074                                push_info->dest);
1075                 else
1076                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1077                                push_info->dest);
1078         }
1079         return 0;
1080 }
1081
1082 static int get_one_entry(struct remote *remote, void *priv)
1083 {
1084         struct string_list *list = priv;
1085         struct strbuf url_buf = STRBUF_INIT;
1086         const char **url;
1087         int i, url_nr;
1088
1089         if (remote->url_nr > 0) {
1090                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1091                 string_list_append(list, remote->name)->util =
1092                                 strbuf_detach(&url_buf, NULL);
1093         } else
1094                 string_list_append(list, remote->name)->util = NULL;
1095         if (remote->pushurl_nr) {
1096                 url = remote->pushurl;
1097                 url_nr = remote->pushurl_nr;
1098         } else {
1099                 url = remote->url;
1100                 url_nr = remote->url_nr;
1101         }
1102         for (i = 0; i < url_nr; i++)
1103         {
1104                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1105                 string_list_append(list, remote->name)->util =
1106                                 strbuf_detach(&url_buf, NULL);
1107         }
1108
1109         return 0;
1110 }
1111
1112 static int show_all(void)
1113 {
1114         struct string_list list = STRING_LIST_INIT_NODUP;
1115         int result;
1116
1117         list.strdup_strings = 1;
1118         result = for_each_remote(get_one_entry, &list);
1119
1120         if (!result) {
1121                 int i;
1122
1123                 sort_string_list(&list);
1124                 for (i = 0; i < list.nr; i++) {
1125                         struct string_list_item *item = list.items + i;
1126                         if (verbose)
1127                                 printf("%s\t%s\n", item->string,
1128                                         item->util ? (const char *)item->util : "");
1129                         else {
1130                                 if (i && !strcmp((item - 1)->string, item->string))
1131                                         continue;
1132                                 printf("%s\n", item->string);
1133                         }
1134                 }
1135         }
1136         string_list_clear(&list, 1);
1137         return result;
1138 }
1139
1140 static int show(int argc, const char **argv)
1141 {
1142         int no_query = 0, result = 0, query_flag = 0;
1143         struct option options[] = {
1144                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1145                 OPT_END()
1146         };
1147         struct ref_states states;
1148         struct string_list info_list = STRING_LIST_INIT_NODUP;
1149         struct show_info info;
1150
1151         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1152                              0);
1153
1154         if (argc < 1)
1155                 return show_all();
1156
1157         if (!no_query)
1158                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1159
1160         memset(&states, 0, sizeof(states));
1161         memset(&info, 0, sizeof(info));
1162         info.states = &states;
1163         info.list = &info_list;
1164         for (; argc; argc--, argv++) {
1165                 int i;
1166                 const char **url;
1167                 int url_nr;
1168
1169                 get_remote_ref_states(*argv, &states, query_flag);
1170
1171                 printf_ln(_("* remote %s"), *argv);
1172                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1173                        states.remote->url[0] : _("(no URL)"));
1174                 if (states.remote->pushurl_nr) {
1175                         url = states.remote->pushurl;
1176                         url_nr = states.remote->pushurl_nr;
1177                 } else {
1178                         url = states.remote->url;
1179                         url_nr = states.remote->url_nr;
1180                 }
1181                 for (i = 0; i < url_nr; i++)
1182                         printf_ln(_("  Push  URL: %s"), url[i]);
1183                 if (!i)
1184                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1185                 if (no_query)
1186                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1187                 else if (!states.heads.nr)
1188                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1189                 else if (states.heads.nr == 1)
1190                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1191                 else {
1192                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1193                                  " may be one of the following):\n"));
1194                         for (i = 0; i < states.heads.nr; i++)
1195                                 printf("    %s\n", states.heads.items[i].string);
1196                 }
1197
1198                 /* remote branch info */
1199                 info.width = 0;
1200                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1201                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1202                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1203                 if (info.list->nr)
1204                         printf_ln(Q_("  Remote branch:%s",
1205                                      "  Remote branches:%s",
1206                                      info.list->nr),
1207                                   no_query ? _(" (status not queried)") : "");
1208                 for_each_string_list(info.list, show_remote_info_item, &info);
1209                 string_list_clear(info.list, 0);
1210
1211                 /* git pull info */
1212                 info.width = 0;
1213                 info.any_rebase = 0;
1214                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1215                 if (info.list->nr)
1216                         printf_ln(Q_("  Local branch configured for 'git pull':",
1217                                      "  Local branches configured for 'git pull':",
1218                                      info.list->nr));
1219                 for_each_string_list(info.list, show_local_info_item, &info);
1220                 string_list_clear(info.list, 0);
1221
1222                 /* git push info */
1223                 if (states.remote->mirror)
1224                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1225
1226                 info.width = info.width2 = 0;
1227                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1228                 qsort(info.list->items, info.list->nr,
1229                         sizeof(*info.list->items), cmp_string_with_push);
1230                 if (info.list->nr)
1231                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1232                                      "  Local refs configured for 'git push'%s:",
1233                                      info.list->nr),
1234                                   no_query ? _(" (status not queried)") : "");
1235                 for_each_string_list(info.list, show_push_info_item, &info);
1236                 string_list_clear(info.list, 0);
1237
1238                 free_remote_ref_states(&states);
1239         }
1240
1241         return result;
1242 }
1243
1244 static int set_head(int argc, const char **argv)
1245 {
1246         int i, opt_a = 0, opt_d = 0, result = 0;
1247         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1248         char *head_name = NULL;
1249
1250         struct option options[] = {
1251                 OPT_BOOL('a', "auto", &opt_a,
1252                          N_("set refs/remotes/<name>/HEAD according to remote")),
1253                 OPT_BOOL('d', "delete", &opt_d,
1254                          N_("delete refs/remotes/<name>/HEAD")),
1255                 OPT_END()
1256         };
1257         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1258                              0);
1259         if (argc)
1260                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1261
1262         if (!opt_a && !opt_d && argc == 2) {
1263                 head_name = xstrdup(argv[1]);
1264         } else if (opt_a && !opt_d && argc == 1) {
1265                 struct ref_states states;
1266                 memset(&states, 0, sizeof(states));
1267                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1268                 if (!states.heads.nr)
1269                         result |= error(_("Cannot determine remote HEAD"));
1270                 else if (states.heads.nr > 1) {
1271                         result |= error(_("Multiple remote HEAD branches. "
1272                                           "Please choose one explicitly with:"));
1273                         for (i = 0; i < states.heads.nr; i++)
1274                                 fprintf(stderr, "  git remote set-head %s %s\n",
1275                                         argv[0], states.heads.items[i].string);
1276                 } else
1277                         head_name = xstrdup(states.heads.items[0].string);
1278                 free_remote_ref_states(&states);
1279         } else if (opt_d && !opt_a && argc == 1) {
1280                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1281                         result |= error(_("Could not delete %s"), buf.buf);
1282         } else
1283                 usage_with_options(builtin_remote_sethead_usage, options);
1284
1285         if (head_name) {
1286                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1287                 /* make sure it's valid */
1288                 if (!ref_exists(buf2.buf))
1289                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1290                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1291                         result |= error(_("Could not setup %s"), buf.buf);
1292                 if (opt_a)
1293                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1294                 free(head_name);
1295         }
1296
1297         strbuf_release(&buf);
1298         strbuf_release(&buf2);
1299         return result;
1300 }
1301
1302 static int prune_remote(const char *remote, int dry_run)
1303 {
1304         int result = 0, i;
1305         struct ref_states states;
1306         const char *dangling_msg = dry_run
1307                 ? _(" %s will become dangling!")
1308                 : _(" %s has become dangling!");
1309
1310         memset(&states, 0, sizeof(states));
1311         get_remote_ref_states(remote, &states, GET_REF_STATES);
1312
1313         if (states.stale.nr) {
1314                 printf_ln(_("Pruning %s"), remote);
1315                 printf_ln(_("URL: %s"),
1316                        states.remote->url_nr
1317                        ? states.remote->url[0]
1318                        : _("(no URL)"));
1319         }
1320
1321         for (i = 0; i < states.stale.nr; i++) {
1322                 const char *refname = states.stale.items[i].util;
1323
1324                 if (!dry_run)
1325                         result |= delete_ref(refname, NULL, 0);
1326
1327                 if (dry_run)
1328                         printf_ln(_(" * [would prune] %s"),
1329                                abbrev_ref(refname, "refs/remotes/"));
1330                 else
1331                         printf_ln(_(" * [pruned] %s"),
1332                                abbrev_ref(refname, "refs/remotes/"));
1333                 warn_dangling_symref(stdout, dangling_msg, refname);
1334         }
1335
1336         free_remote_ref_states(&states);
1337         return result;
1338 }
1339
1340 static int prune(int argc, const char **argv)
1341 {
1342         int dry_run = 0, result = 0;
1343         struct option options[] = {
1344                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1345                 OPT_END()
1346         };
1347
1348         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1349                              0);
1350
1351         if (argc < 1)
1352                 usage_with_options(builtin_remote_prune_usage, options);
1353
1354         for (; argc; argc--, argv++)
1355                 result |= prune_remote(*argv, dry_run);
1356
1357         return result;
1358 }
1359
1360 static int get_remote_default(const char *key, const char *value, void *priv)
1361 {
1362         if (strcmp(key, "remotes.default") == 0) {
1363                 int *found = priv;
1364                 *found = 1;
1365         }
1366         return 0;
1367 }
1368
1369 static int update(int argc, const char **argv)
1370 {
1371         int i, prune = -1;
1372         struct option options[] = {
1373                 OPT_BOOL('p', "prune", &prune,
1374                          N_("prune remotes after fetching")),
1375                 OPT_END()
1376         };
1377         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1378         int default_defined = 0;
1379         int retval;
1380
1381         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1382                              PARSE_OPT_KEEP_ARGV0);
1383
1384         argv_array_push(&fetch_argv, "fetch");
1385
1386         if (prune != -1)
1387                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1388         if (verbose)
1389                 argv_array_push(&fetch_argv, "-v");
1390         argv_array_push(&fetch_argv, "--multiple");
1391         if (argc < 2)
1392                 argv_array_push(&fetch_argv, "default");
1393         for (i = 1; i < argc; i++)
1394                 argv_array_push(&fetch_argv, argv[i]);
1395
1396         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1397                 git_config(get_remote_default, &default_defined);
1398                 if (!default_defined) {
1399                         argv_array_pop(&fetch_argv);
1400                         argv_array_push(&fetch_argv, "--all");
1401                 }
1402         }
1403
1404         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1405         argv_array_clear(&fetch_argv);
1406         return retval;
1407 }
1408
1409 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1410 {
1411         return git_config_set_multivar(key, NULL, NULL, 1);
1412 }
1413
1414 static int add_branches(struct remote *remote, const char **branches,
1415                         const char *key)
1416 {
1417         const char *remotename = remote->name;
1418         int mirror = remote->mirror;
1419         struct strbuf refspec = STRBUF_INIT;
1420
1421         for (; *branches; branches++)
1422                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1423                         strbuf_release(&refspec);
1424                         return 1;
1425                 }
1426
1427         strbuf_release(&refspec);
1428         return 0;
1429 }
1430
1431 static int set_remote_branches(const char *remotename, const char **branches,
1432                                 int add_mode)
1433 {
1434         struct strbuf key = STRBUF_INIT;
1435         struct remote *remote;
1436
1437         strbuf_addf(&key, "remote.%s.fetch", remotename);
1438
1439         if (!remote_is_configured(remotename))
1440                 die(_("No such remote '%s'"), remotename);
1441         remote = remote_get(remotename);
1442
1443         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1444                 strbuf_release(&key);
1445                 return 1;
1446         }
1447         if (add_branches(remote, branches, key.buf)) {
1448                 strbuf_release(&key);
1449                 return 1;
1450         }
1451
1452         strbuf_release(&key);
1453         return 0;
1454 }
1455
1456 static int set_branches(int argc, const char **argv)
1457 {
1458         int add_mode = 0;
1459         struct option options[] = {
1460                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1461                 OPT_END()
1462         };
1463
1464         argc = parse_options(argc, argv, NULL, options,
1465                              builtin_remote_setbranches_usage, 0);
1466         if (argc == 0) {
1467                 error(_("no remote specified"));
1468                 usage_with_options(builtin_remote_setbranches_usage, options);
1469         }
1470         argv[argc] = NULL;
1471
1472         return set_remote_branches(argv[0], argv + 1, add_mode);
1473 }
1474
1475 static int set_url(int argc, const char **argv)
1476 {
1477         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1478         int matches = 0, negative_matches = 0;
1479         const char *remotename = NULL;
1480         const char *newurl = NULL;
1481         const char *oldurl = NULL;
1482         struct remote *remote;
1483         regex_t old_regex;
1484         const char **urlset;
1485         int urlset_nr;
1486         struct strbuf name_buf = STRBUF_INIT;
1487         struct option options[] = {
1488                 OPT_BOOL('\0', "push", &push_mode,
1489                          N_("manipulate push URLs")),
1490                 OPT_BOOL('\0', "add", &add_mode,
1491                          N_("add URL")),
1492                 OPT_BOOL('\0', "delete", &delete_mode,
1493                             N_("delete URLs")),
1494                 OPT_END()
1495         };
1496         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1497                              PARSE_OPT_KEEP_ARGV0);
1498
1499         if (add_mode && delete_mode)
1500                 die(_("--add --delete doesn't make sense"));
1501
1502         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1503                 usage_with_options(builtin_remote_seturl_usage, options);
1504
1505         remotename = argv[1];
1506         newurl = argv[2];
1507         if (argc > 3)
1508                 oldurl = argv[3];
1509
1510         if (delete_mode)
1511                 oldurl = newurl;
1512
1513         if (!remote_is_configured(remotename))
1514                 die(_("No such remote '%s'"), remotename);
1515         remote = remote_get(remotename);
1516
1517         if (push_mode) {
1518                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1519                 urlset = remote->pushurl;
1520                 urlset_nr = remote->pushurl_nr;
1521         } else {
1522                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1523                 urlset = remote->url;
1524                 urlset_nr = remote->url_nr;
1525         }
1526
1527         /* Special cases that add new entry. */
1528         if ((!oldurl && !delete_mode) || add_mode) {
1529                 if (add_mode)
1530                         git_config_set_multivar(name_buf.buf, newurl,
1531                                 "^$", 0);
1532                 else
1533                         git_config_set(name_buf.buf, newurl);
1534                 strbuf_release(&name_buf);
1535                 return 0;
1536         }
1537
1538         /* Old URL specified. Demand that one matches. */
1539         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1540                 die(_("Invalid old URL pattern: %s"), oldurl);
1541
1542         for (i = 0; i < urlset_nr; i++)
1543                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1544                         matches++;
1545                 else
1546                         negative_matches++;
1547         if (!delete_mode && !matches)
1548                 die(_("No such URL found: %s"), oldurl);
1549         if (delete_mode && !negative_matches && !push_mode)
1550                 die(_("Will not delete all non-push URLs"));
1551
1552         regfree(&old_regex);
1553
1554         if (!delete_mode)
1555                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1556         else
1557                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1558         return 0;
1559 }
1560
1561 int cmd_remote(int argc, const char **argv, const char *prefix)
1562 {
1563         struct option options[] = {
1564                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1565                 OPT_END()
1566         };
1567         int result;
1568
1569         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1570                 PARSE_OPT_STOP_AT_NON_OPTION);
1571
1572         if (argc < 1)
1573                 result = show_all();
1574         else if (!strcmp(argv[0], "add"))
1575                 result = add(argc, argv);
1576         else if (!strcmp(argv[0], "rename"))
1577                 result = mv(argc, argv);
1578         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1579                 result = rm(argc, argv);
1580         else if (!strcmp(argv[0], "set-head"))
1581                 result = set_head(argc, argv);
1582         else if (!strcmp(argv[0], "set-branches"))
1583                 result = set_branches(argc, argv);
1584         else if (!strcmp(argv[0], "set-url"))
1585                 result = set_url(argc, argv);
1586         else if (!strcmp(argv[0], "show"))
1587                 result = show(argc, argv);
1588         else if (!strcmp(argv[0], "prune"))
1589                 result = prune(argc, argv);
1590         else if (!strcmp(argv[0], "update"))
1591                 result = update(argc, argv);
1592         else {
1593                 error(_("Unknown subcommand: %s"), argv[0]);
1594                 usage_with_options(builtin_remote_usage, options);
1595         }
1596
1597         return result ? 1 : 0;
1598 }