builtin/remote.c

   1 #include "cache.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
  10 static const char * const builtin_remote_usage[] = {
  11         "git remote [-v | --verbose]",
  12         "git remote add [-t <branch>] [-m <master>] [-f] [--mirror] <name> <url>",
  13         "git remote rename <old> <new>",
  14         "git remote rm <name>",
  15         "git remote set-head <name> (-a | -d | <branch>)",
  16         "git remote [-v | --verbose] show [-n] <name>",
  17         "git remote prune [-n | --dry-run] <name>",
  18         "git remote [-v | --verbose] update [-p | --prune] [group | remote]",
  19         "git remote set-url <name> <newurl> [<oldurl>]",
  20         "git remote set-url --add <name> <newurl>",
  21         "git remote set-url --delete <name> <url>",
  22         NULL
  23 };
  24
  25 static const char * const builtin_remote_add_usage[] = {
  26         "git remote add [<options>] <name> <url>",
  27         NULL
  28 };
  29
  30 static const char * const builtin_remote_rename_usage[] = {
  31         "git remote rename <old> <new>",
  32         NULL
  33 };
  34
  35 static const char * const builtin_remote_rm_usage[] = {
  36         "git remote rm <name>",
  37         NULL
  38 };
  39
  40 static const char * const builtin_remote_sethead_usage[] = {
  41         "git remote set-head <name> (-a | -d | <branch>])",
  42         NULL
  43 };
  44
  45 static const char * const builtin_remote_show_usage[] = {
  46         "git remote show [<options>] <name>",
  47         NULL
  48 };
  49
  50 static const char * const builtin_remote_prune_usage[] = {
  51         "git remote prune [<options>] <name>",
  52         NULL
  53 };
  54
  55 static const char * const builtin_remote_update_usage[] = {
  56         "git remote update [<options>] [<group> | <remote>]...",
  57         NULL
  58 };
  59
  60 static const char * const builtin_remote_seturl_usage[] = {
  61         "git remote set-url [--push] <name> <newurl> [<oldurl>]",
  62         "git remote set-url --add <name> <newurl>",
  63         "git remote set-url --delete <name> <url>",
  64         NULL
  65 };
  66
  67 #define GET_REF_STATES (1<<0)
  68 #define GET_HEAD_NAMES (1<<1)
  69 #define GET_PUSH_REF_STATES (1<<2)
  70
  71 static int verbose;
  72
  73 static int show_all(void);
  74 static int prune_remote(const char *remote, int dry_run);
  75
  76 static inline int postfixcmp(const char *string, const char *postfix)
  77 {
  78         int len1 = strlen(string), len2 = strlen(postfix);
  79         if (len1 < len2)
  80                 return 1;
  81         return strcmp(string + len1 - len2, postfix);
  82 }
  83
  84 static int opt_parse_track(const struct option *opt, const char *arg, int not)
  85 {
  86         struct string_list *list = opt->value;
  87         if (not)
  88                 string_list_clear(list, 0);
  89         else
  90                 string_list_append(list, arg);
  91         return 0;
  92 }
  93
  94 static int fetch_remote(const char *name)
  95 {
  96         const char *argv[] = { "fetch", name, NULL, NULL };
  97         if (verbose) {
  98                 argv[1] = "-v";
  99                 argv[2] = name;
 100         }
 101         printf("Updating %s\n", name);
 102         if (run_command_v_opt(argv, RUN_GIT_CMD))
 103                 return error("Could not fetch %s", name);
 104         return 0;
 105 }
 106
 107 enum {
 108         TAGS_UNSET = 0,
 109         TAGS_DEFAULT = 1,
 110         TAGS_SET = 2
 111 };
 112
 113 static int add(int argc, const char **argv)
 114 {
 115         int fetch = 0, mirror = 0, fetch_tags = TAGS_DEFAULT;
 116         struct string_list track = { NULL, 0, 0 };
 117         const char *master = NULL;
 118         struct remote *remote;
 119         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 120         const char *name, *url;
 121         int i;
 122
 123         struct option options[] = {
 124                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
 125                 OPT_SET_INT(0, "tags", &fetch_tags,
 126                             "import all tags and associated objects when fetching",
 127                             TAGS_SET),
 128                 OPT_SET_INT(0, NULL, &fetch_tags,
 129                             "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
 130                 OPT_CALLBACK('t', "track", &track, "branch",
 131                         "branch(es) to track", opt_parse_track),
 132                 OPT_STRING('m', "master", &master, "branch", "master branch"),
 133                 OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
 134                 OPT_END()
 135         };
 136
 137         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 138                              0);
 139
 140         if (argc < 2)
 141                 usage_with_options(builtin_remote_add_usage, options);
 142
 143         name = argv[0];
 144         url = argv[1];
 145
 146         remote = remote_get(name);
 147         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 148                         remote->fetch_refspec_nr))
 149                 die("remote %s already exists.", name);
 150
 151         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 152         if (!valid_fetch_refspec(buf2.buf))
 153                 die("'%s' is not a valid remote name", name);
 154
 155         strbuf_addf(&buf, "remote.%s.url", name);
 156         if (git_config_set(buf.buf, url))
 157                 return 1;
 158
 159         strbuf_reset(&buf);
 160         strbuf_addf(&buf, "remote.%s.fetch", name);
 161
 162         if (track.nr == 0)
 163                 string_list_append(&track, "*");
 164         for (i = 0; i < track.nr; i++) {
 165                 struct string_list_item *item = track.items + i;
 166
 167                 strbuf_reset(&buf2);
 168                 strbuf_addch(&buf2, '+');
 169                 if (mirror)
 170                         strbuf_addf(&buf2, "refs/%s:refs/%s",
 171                                         item->string, item->string);
 172                 else
 173                         strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
 174                                         item->string, name, item->string);
 175                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 176                         return 1;
 177         }
 178
 179         if (mirror) {
 180                 strbuf_reset(&buf);
 181                 strbuf_addf(&buf, "remote.%s.mirror", name);
 182                 if (git_config_set(buf.buf, "true"))
 183                         return 1;
 184         }
 185
 186         if (fetch_tags != TAGS_DEFAULT) {
 187                 strbuf_reset(&buf);
 188                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 189                 if (git_config_set(buf.buf,
 190                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 191                         return 1;
 192         }
 193
 194         if (fetch && fetch_remote(name))
 195                 return 1;
 196
 197         if (master) {
 198                 strbuf_reset(&buf);
 199                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 200
 201                 strbuf_reset(&buf2);
 202                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 203
 204                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 205                         return error("Could not setup master '%s'", master);
 206         }
 207
 208         strbuf_release(&buf);
 209         strbuf_release(&buf2);
 210         string_list_clear(&track, 0);
 211
 212         return 0;
 213 }
 214
 215 struct branch_info {
 216         char *remote_name;
 217         struct string_list merge;
 218         int rebase;
 219 };
 220
 221 static struct string_list branch_list;
 222
 223 static const char *abbrev_ref(const char *name, const char *prefix)
 224 {
 225         const char *abbrev = skip_prefix(name, prefix);
 226         if (abbrev)
 227                 return abbrev;
 228         return name;
 229 }
 230 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 231
 232 static int config_read_branches(const char *key, const char *value, void *cb)
 233 {
 234         if (!prefixcmp(key, "branch.")) {
 235                 const char *orig_key = key;
 236                 char *name;
 237                 struct string_list_item *item;
 238                 struct branch_info *info;
 239                 enum { REMOTE, MERGE, REBASE } type;
 240
 241                 key += 7;
 242                 if (!postfixcmp(key, ".remote")) {
 243                         name = xstrndup(key, strlen(key) - 7);
 244                         type = REMOTE;
 245                 } else if (!postfixcmp(key, ".merge")) {
 246                         name = xstrndup(key, strlen(key) - 6);
 247                         type = MERGE;
 248                 } else if (!postfixcmp(key, ".rebase")) {
 249                         name = xstrndup(key, strlen(key) - 7);
 250                         type = REBASE;
 251                 } else
 252                         return 0;
 253
 254                 item = string_list_insert(&branch_list, name);
 255
 256                 if (!item->util)
 257                         item->util = xcalloc(sizeof(struct branch_info), 1);
 258                 info = item->util;
 259                 if (type == REMOTE) {
 260                         if (info->remote_name)
 261                                 warning("more than one %s", orig_key);
 262                         info->remote_name = xstrdup(value);
 263                 } else if (type == MERGE) {
 264                         char *space = strchr(value, ' ');
 265                         value = abbrev_branch(value);
 266                         while (space) {
 267                                 char *merge;
 268                                 merge = xstrndup(value, space - value);
 269                                 string_list_append(&info->merge, merge);
 270                                 value = abbrev_branch(space + 1);
 271                                 space = strchr(value, ' ');
 272                         }
 273                         string_list_append(&info->merge, xstrdup(value));
 274                 } else
 275                         info->rebase = git_config_bool(orig_key, value);
 276         }
 277         return 0;
 278 }
 279
 280 static void read_branches(void)
 281 {
 282         if (branch_list.nr)
 283                 return;
 284         git_config(config_read_branches, NULL);
 285 }
 286
 287 struct ref_states {
 288         struct remote *remote;
 289         struct string_list new, stale, tracked, heads, push;
 290         int queried;
 291 };
 292
 293 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 294 {
 295         struct ref *fetch_map = NULL, **tail = &fetch_map;
 296         struct ref *ref, *stale_refs;
 297         int i;
 298
 299         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 300                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 301                         die("Could not get fetch map for refspec %s",
 302                                 states->remote->fetch_refspec[i]);
 303
 304         states->new.strdup_strings = 1;
 305         states->tracked.strdup_strings = 1;
 306         states->stale.strdup_strings = 1;
 307         for (ref = fetch_map; ref; ref = ref->next) {
 308                 unsigned char sha1[20];
 309                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 310                         string_list_append(&states->new, abbrev_branch(ref->name));
 311                 else
 312                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 313         }
 314         stale_refs = get_stale_heads(states->remote, fetch_map);
 315         for (ref = stale_refs; ref; ref = ref->next) {
 316                 struct string_list_item *item =
 317                         string_list_append(&states->stale, abbrev_branch(ref->name));
 318                 item->util = xstrdup(ref->name);
 319         }
 320         free_refs(stale_refs);
 321         free_refs(fetch_map);
 322
 323         sort_string_list(&states->new);
 324         sort_string_list(&states->tracked);
 325         sort_string_list(&states->stale);
 326
 327         return 0;
 328 }
 329
 330 struct push_info {
 331         char *dest;
 332         int forced;
 333         enum {
 334                 PUSH_STATUS_CREATE = 0,
 335                 PUSH_STATUS_DELETE,
 336                 PUSH_STATUS_UPTODATE,
 337                 PUSH_STATUS_FASTFORWARD,
 338                 PUSH_STATUS_OUTOFDATE,
 339                 PUSH_STATUS_NOTQUERIED,
 340         } status;
 341 };
 342
 343 static int get_push_ref_states(const struct ref *remote_refs,
 344         struct ref_states *states)
 345 {
 346         struct remote *remote = states->remote;
 347         struct ref *ref, *local_refs, *push_map;
 348         if (remote->mirror)
 349                 return 0;
 350
 351         local_refs = get_local_heads();
 352         push_map = copy_ref_list(remote_refs);
 353
 354         match_refs(local_refs, &push_map, remote->push_refspec_nr,
 355                    remote->push_refspec, MATCH_REFS_NONE);
 356
 357         states->push.strdup_strings = 1;
 358         for (ref = push_map; ref; ref = ref->next) {
 359                 struct string_list_item *item;
 360                 struct push_info *info;
 361
 362                 if (!ref->peer_ref)
 363                         continue;
 364                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 365
 366                 item = string_list_append(&states->push,
 367                                           abbrev_branch(ref->peer_ref->name));
 368                 item->util = xcalloc(sizeof(struct push_info), 1);
 369                 info = item->util;
 370                 info->forced = ref->force;
 371                 info->dest = xstrdup(abbrev_branch(ref->name));
 372
 373                 if (is_null_sha1(ref->new_sha1)) {
 374                         info->status = PUSH_STATUS_DELETE;
 375                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 376                         info->status = PUSH_STATUS_UPTODATE;
 377                 else if (is_null_sha1(ref->old_sha1))
 378                         info->status = PUSH_STATUS_CREATE;
 379                 else if (has_sha1_file(ref->old_sha1) &&
 380                          ref_newer(ref->new_sha1, ref->old_sha1))
 381                         info->status = PUSH_STATUS_FASTFORWARD;
 382                 else
 383                         info->status = PUSH_STATUS_OUTOFDATE;
 384         }
 385         free_refs(local_refs);
 386         free_refs(push_map);
 387         return 0;
 388 }
 389
 390 static int get_push_ref_states_noquery(struct ref_states *states)
 391 {
 392         int i;
 393         struct remote *remote = states->remote;
 394         struct string_list_item *item;
 395         struct push_info *info;
 396
 397         if (remote->mirror)
 398                 return 0;
 399
 400         states->push.strdup_strings = 1;
 401         if (!remote->push_refspec_nr) {
 402                 item = string_list_append(&states->push, "(matching)");
 403                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 404                 info->status = PUSH_STATUS_NOTQUERIED;
 405                 info->dest = xstrdup(item->string);
 406         }
 407         for (i = 0; i < remote->push_refspec_nr; i++) {
 408                 struct refspec *spec = remote->push + i;
 409                 if (spec->matching)
 410                         item = string_list_append(&states->push, "(matching)");
 411                 else if (strlen(spec->src))
 412                         item = string_list_append(&states->push, spec->src);
 413                 else
 414                         item = string_list_append(&states->push, "(delete)");
 415
 416                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 417                 info->forced = spec->force;
 418                 info->status = PUSH_STATUS_NOTQUERIED;
 419                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 420         }
 421         return 0;
 422 }
 423
 424 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 425 {
 426         struct ref *ref, *matches;
 427         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 428         struct refspec refspec;
 429
 430         refspec.force = 0;
 431         refspec.pattern = 1;
 432         refspec.src = refspec.dst = "refs/heads/*";
 433         states->heads.strdup_strings = 1;
 434         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 435         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 436                                     fetch_map, 1);
 437         for (ref = matches; ref; ref = ref->next)
 438                 string_list_append(&states->heads, abbrev_branch(ref->name));
 439
 440         free_refs(fetch_map);
 441         free_refs(matches);
 442
 443         return 0;
 444 }
 445
 446 struct known_remote {
 447         struct known_remote *next;
 448         struct remote *remote;
 449 };
 450
 451 struct known_remotes {
 452         struct remote *to_delete;
 453         struct known_remote *list;
 454 };
 455
 456 static int add_known_remote(struct remote *remote, void *cb_data)
 457 {
 458         struct known_remotes *all = cb_data;
 459         struct known_remote *r;
 460
 461         if (!strcmp(all->to_delete->name, remote->name))
 462                 return 0;
 463
 464         r = xmalloc(sizeof(*r));
 465         r->remote = remote;
 466         r->next = all->list;
 467         all->list = r;
 468         return 0;
 469 }
 470
 471 struct branches_for_remote {
 472         struct remote *remote;
 473         struct string_list *branches, *skipped;
 474         struct known_remotes *keep;
 475 };
 476
 477 static int add_branch_for_removal(const char *refname,
 478         const unsigned char *sha1, int flags, void *cb_data)
 479 {
 480         struct branches_for_remote *branches = cb_data;
 481         struct refspec refspec;
 482         struct string_list_item *item;
 483         struct known_remote *kr;
 484
 485         memset(&refspec, 0, sizeof(refspec));
 486         refspec.dst = (char *)refname;
 487         if (remote_find_tracking(branches->remote, &refspec))
 488                 return 0;
 489
 490         /* don't delete a branch if another remote also uses it */
 491         for (kr = branches->keep->list; kr; kr = kr->next) {
 492                 memset(&refspec, 0, sizeof(refspec));
 493                 refspec.dst = (char *)refname;
 494                 if (!remote_find_tracking(kr->remote, &refspec))
 495                         return 0;
 496         }
 497
 498         /* don't delete non-remote refs */
 499         if (prefixcmp(refname, "refs/remotes")) {
 500                 /* advise user how to delete local branches */
 501                 if (!prefixcmp(refname, "refs/heads/"))
 502                         string_list_append(branches->skipped,
 503                                            abbrev_branch(refname));
 504                 /* silently skip over other non-remote refs */
 505                 return 0;
 506         }
 507
 508         /* make sure that symrefs are deleted */
 509         if (flags & REF_ISSYMREF)
 510                 return unlink(git_path("%s", refname));
 511
 512         item = string_list_append(branches->branches, refname);
 513         item->util = xmalloc(20);
 514         hashcpy(item->util, sha1);
 515
 516         return 0;
 517 }
 518
 519 struct rename_info {
 520         const char *old;
 521         const char *new;
 522         struct string_list *remote_branches;
 523 };
 524
 525 static int read_remote_branches(const char *refname,
 526         const unsigned char *sha1, int flags, void *cb_data)
 527 {
 528         struct rename_info *rename = cb_data;
 529         struct strbuf buf = STRBUF_INIT;
 530         struct string_list_item *item;
 531         int flag;
 532         unsigned char orig_sha1[20];
 533         const char *symref;
 534
 535         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 536         if (!prefixcmp(refname, buf.buf)) {
 537                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 538                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
 539                 if (flag & REF_ISSYMREF)
 540                         item->util = xstrdup(symref);
 541                 else
 542                         item->util = NULL;
 543         }
 544
 545         return 0;
 546 }
 547
 548 static int migrate_file(struct remote *remote)
 549 {
 550         struct strbuf buf = STRBUF_INIT;
 551         int i;
 552         char *path = NULL;
 553
 554         strbuf_addf(&buf, "remote.%s.url", remote->name);
 555         for (i = 0; i < remote->url_nr; i++)
 556                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 557                         return error("Could not append '%s' to '%s'",
 558                                         remote->url[i], buf.buf);
 559         strbuf_reset(&buf);
 560         strbuf_addf(&buf, "remote.%s.push", remote->name);
 561         for (i = 0; i < remote->push_refspec_nr; i++)
 562                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 563                         return error("Could not append '%s' to '%s'",
 564                                         remote->push_refspec[i], buf.buf);
 565         strbuf_reset(&buf);
 566         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 567         for (i = 0; i < remote->fetch_refspec_nr; i++)
 568                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 569                         return error("Could not append '%s' to '%s'",
 570                                         remote->fetch_refspec[i], buf.buf);
 571         if (remote->origin == REMOTE_REMOTES)
 572                 path = git_path("remotes/%s", remote->name);
 573         else if (remote->origin == REMOTE_BRANCHES)
 574                 path = git_path("branches/%s", remote->name);
 575         if (path)
 576                 unlink_or_warn(path);
 577         return 0;
 578 }
 579
 580 static int mv(int argc, const char **argv)
 581 {
 582         struct option options[] = {
 583                 OPT_END()
 584         };
 585         struct remote *oldremote, *newremote;
 586         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 587         struct string_list remote_branches = { NULL, 0, 0, 0 };
 588         struct rename_info rename;
 589         int i;
 590
 591         if (argc != 3)
 592                 usage_with_options(builtin_remote_rename_usage, options);
 593
 594         rename.old = argv[1];
 595         rename.new = argv[2];
 596         rename.remote_branches = &remote_branches;
 597
 598         oldremote = remote_get(rename.old);
 599         if (!oldremote)
 600                 die("No such remote: %s", rename.old);
 601
 602         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 603                 return migrate_file(oldremote);
 604
 605         newremote = remote_get(rename.new);
 606         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 607                 die("remote %s already exists.", rename.new);
 608
 609         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 610         if (!valid_fetch_refspec(buf.buf))
 611                 die("'%s' is not a valid remote name", rename.new);
 612
 613         strbuf_reset(&buf);
 614         strbuf_addf(&buf, "remote.%s", rename.old);
 615         strbuf_addf(&buf2, "remote.%s", rename.new);
 616         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 617                 return error("Could not rename config section '%s' to '%s'",
 618                                 buf.buf, buf2.buf);
 619
 620         strbuf_reset(&buf);
 621         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 622         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 623                 return error("Could not remove config section '%s'", buf.buf);
 624         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 625                 char *ptr;
 626
 627                 strbuf_reset(&buf2);
 628                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 629                 ptr = strstr(buf2.buf, rename.old);
 630                 if (ptr)
 631                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 632                                         rename.new, strlen(rename.new));
 633                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 634                         return error("Could not append '%s'", buf.buf);
 635         }
 636
 637         read_branches();
 638         for (i = 0; i < branch_list.nr; i++) {
 639                 struct string_list_item *item = branch_list.items + i;
 640                 struct branch_info *info = item->util;
 641                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 642                         strbuf_reset(&buf);
 643                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 644                         if (git_config_set(buf.buf, rename.new)) {
 645                                 return error("Could not set '%s'", buf.buf);
 646                         }
 647                 }
 648         }
 649
 650         /*
 651          * First remove symrefs, then rename the rest, finally create
 652          * the new symrefs.
 653          */
 654         for_each_ref(read_remote_branches, &rename);
 655         for (i = 0; i < remote_branches.nr; i++) {
 656                 struct string_list_item *item = remote_branches.items + i;
 657                 int flag = 0;
 658                 unsigned char sha1[20];
 659
 660                 resolve_ref(item->string, sha1, 1, &flag);
 661                 if (!(flag & REF_ISSYMREF))
 662                         continue;
 663                 if (delete_ref(item->string, NULL, REF_NODEREF))
 664                         die("deleting '%s' failed", item->string);
 665         }
 666         for (i = 0; i < remote_branches.nr; i++) {
 667                 struct string_list_item *item = remote_branches.items + i;
 668
 669                 if (item->util)
 670                         continue;
 671                 strbuf_reset(&buf);
 672                 strbuf_addstr(&buf, item->string);
 673                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 674                                 rename.new, strlen(rename.new));
 675                 strbuf_reset(&buf2);
 676                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 677                                 item->string, buf.buf);
 678                 if (rename_ref(item->string, buf.buf, buf2.buf))
 679                         die("renaming '%s' failed", item->string);
 680         }
 681         for (i = 0; i < remote_branches.nr; i++) {
 682                 struct string_list_item *item = remote_branches.items + i;
 683
 684                 if (!item->util)
 685                         continue;
 686                 strbuf_reset(&buf);
 687                 strbuf_addstr(&buf, item->string);
 688                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 689                                 rename.new, strlen(rename.new));
 690                 strbuf_reset(&buf2);
 691                 strbuf_addstr(&buf2, item->util);
 692                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 693                                 rename.new, strlen(rename.new));
 694                 strbuf_reset(&buf3);
 695                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 696                                 item->string, buf.buf);
 697                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 698                         die("creating '%s' failed", buf.buf);
 699         }
 700         return 0;
 701 }
 702
 703 static int remove_branches(struct string_list *branches)
 704 {
 705         int i, result = 0;
 706         for (i = 0; i < branches->nr; i++) {
 707                 struct string_list_item *item = branches->items + i;
 708                 const char *refname = item->string;
 709                 unsigned char *sha1 = item->util;
 710
 711                 if (delete_ref(refname, sha1, 0))
 712                         result |= error("Could not remove branch %s", refname);
 713         }
 714         return result;
 715 }
 716
 717 static int rm(int argc, const char **argv)
 718 {
 719         struct option options[] = {
 720                 OPT_END()
 721         };
 722         struct remote *remote;
 723         struct strbuf buf = STRBUF_INIT;
 724         struct known_remotes known_remotes = { NULL, NULL };
 725         struct string_list branches = { NULL, 0, 0, 1 };
 726         struct string_list skipped = { NULL, 0, 0, 1 };
 727         struct branches_for_remote cb_data = {
 728                 NULL, &branches, &skipped, &known_remotes
 729         };
 730         int i, result;
 731
 732         if (argc != 2)
 733                 usage_with_options(builtin_remote_rm_usage, options);
 734
 735         remote = remote_get(argv[1]);
 736         if (!remote)
 737                 die("No such remote: %s", argv[1]);
 738
 739         known_remotes.to_delete = remote;
 740         for_each_remote(add_known_remote, &known_remotes);
 741
 742         strbuf_addf(&buf, "remote.%s", remote->name);
 743         if (git_config_rename_section(buf.buf, NULL) < 1)
 744                 return error("Could not remove config section '%s'", buf.buf);
 745
 746         read_branches();
 747         for (i = 0; i < branch_list.nr; i++) {
 748                 struct string_list_item *item = branch_list.items + i;
 749                 struct branch_info *info = item->util;
 750                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 751                         const char *keys[] = { "remote", "merge", NULL }, **k;
 752                         for (k = keys; *k; k++) {
 753                                 strbuf_reset(&buf);
 754                                 strbuf_addf(&buf, "branch.%s.%s",
 755                                                 item->string, *k);
 756                                 if (git_config_set(buf.buf, NULL)) {
 757                                         strbuf_release(&buf);
 758                                         return -1;
 759                                 }
 760                         }
 761                 }
 762         }
 763
 764         /*
 765          * We cannot just pass a function to for_each_ref() which deletes
 766          * the branches one by one, since for_each_ref() relies on cached
 767          * refs, which are invalidated when deleting a branch.
 768          */
 769         cb_data.remote = remote;
 770         result = for_each_ref(add_branch_for_removal, &cb_data);
 771         strbuf_release(&buf);
 772
 773         if (!result)
 774                 result = remove_branches(&branches);
 775         string_list_clear(&branches, 1);
 776
 777         if (skipped.nr) {
 778                 fprintf(stderr, skipped.nr == 1 ?
 779                         "Note: A non-remote branch was not removed; "
 780                         "to delete it, use:\n" :
 781                         "Note: Non-remote branches were not removed; "
 782                         "to delete them, use:\n");
 783                 for (i = 0; i < skipped.nr; i++)
 784                         fprintf(stderr, "  git branch -d %s\n",
 785                                 skipped.items[i].string);
 786         }
 787         string_list_clear(&skipped, 0);
 788
 789         return result;
 790 }
 791
 792 static void clear_push_info(void *util, const char *string)
 793 {
 794         struct push_info *info = util;
 795         free(info->dest);
 796         free(info);
 797 }
 798
 799 static void free_remote_ref_states(struct ref_states *states)
 800 {
 801         string_list_clear(&states->new, 0);
 802         string_list_clear(&states->stale, 1);
 803         string_list_clear(&states->tracked, 0);
 804         string_list_clear(&states->heads, 0);
 805         string_list_clear_func(&states->push, clear_push_info);
 806 }
 807
 808 static int append_ref_to_tracked_list(const char *refname,
 809         const unsigned char *sha1, int flags, void *cb_data)
 810 {
 811         struct ref_states *states = cb_data;
 812         struct refspec refspec;
 813
 814         if (flags & REF_ISSYMREF)
 815                 return 0;
 816
 817         memset(&refspec, 0, sizeof(refspec));
 818         refspec.dst = (char *)refname;
 819         if (!remote_find_tracking(states->remote, &refspec))
 820                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 821
 822         return 0;
 823 }
 824
 825 static int get_remote_ref_states(const char *name,
 826                                  struct ref_states *states,
 827                                  int query)
 828 {
 829         struct transport *transport;
 830         const struct ref *remote_refs;
 831
 832         states->remote = remote_get(name);
 833         if (!states->remote)
 834                 return error("No such remote: %s", name);
 835
 836         read_branches();
 837
 838         if (query) {
 839                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 840                         states->remote->url[0] : NULL);
 841                 remote_refs = transport_get_remote_refs(transport);
 842                 transport_disconnect(transport);
 843
 844                 states->queried = 1;
 845                 if (query & GET_REF_STATES)
 846                         get_ref_states(remote_refs, states);
 847                 if (query & GET_HEAD_NAMES)
 848                         get_head_names(remote_refs, states);
 849                 if (query & GET_PUSH_REF_STATES)
 850                         get_push_ref_states(remote_refs, states);
 851         } else {
 852                 for_each_ref(append_ref_to_tracked_list, states);
 853                 sort_string_list(&states->tracked);
 854                 get_push_ref_states_noquery(states);
 855         }
 856
 857         return 0;
 858 }
 859
 860 struct show_info {
 861         struct string_list *list;
 862         struct ref_states *states;
 863         int width, width2;
 864         int any_rebase;
 865 };
 866
 867 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 868 {
 869         struct show_info *info = cb_data;
 870         int n = strlen(item->string);
 871         if (n > info->width)
 872                 info->width = n;
 873         string_list_insert(info->list, item->string);
 874         return 0;
 875 }
 876
 877 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 878 {
 879         struct show_info *info = cb_data;
 880         struct ref_states *states = info->states;
 881         const char *name = item->string;
 882
 883         if (states->queried) {
 884                 const char *fmt = "%s";
 885                 const char *arg = "";
 886                 if (string_list_has_string(&states->new, name)) {
 887                         fmt = " new (next fetch will store in remotes/%s)";
 888                         arg = states->remote->name;
 889                 } else if (string_list_has_string(&states->tracked, name))
 890                         arg = " tracked";
 891                 else if (string_list_has_string(&states->stale, name))
 892                         arg = " stale (use 'git remote prune' to remove)";
 893                 else
 894                         arg = " ???";
 895                 printf("    %-*s", info->width, name);
 896                 printf(fmt, arg);
 897                 printf("\n");
 898         } else
 899                 printf("    %s\n", name);
 900
 901         return 0;
 902 }
 903
 904 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 905 {
 906         struct show_info *show_info = cb_data;
 907         struct ref_states *states = show_info->states;
 908         struct branch_info *branch_info = branch_item->util;
 909         struct string_list_item *item;
 910         int n;
 911
 912         if (!branch_info->merge.nr || !branch_info->remote_name ||
 913             strcmp(states->remote->name, branch_info->remote_name))
 914                 return 0;
 915         if ((n = strlen(branch_item->string)) > show_info->width)
 916                 show_info->width = n;
 917         if (branch_info->rebase)
 918                 show_info->any_rebase = 1;
 919
 920         item = string_list_insert(show_info->list, branch_item->string);
 921         item->util = branch_info;
 922
 923         return 0;
 924 }
 925
 926 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 927 {
 928         struct show_info *show_info = cb_data;
 929         struct branch_info *branch_info = item->util;
 930         struct string_list *merge = &branch_info->merge;
 931         const char *also;
 932         int i;
 933
 934         if (branch_info->rebase && branch_info->merge.nr > 1) {
 935                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
 936                         item->string);
 937                 return 0;
 938         }
 939
 940         printf("    %-*s ", show_info->width, item->string);
 941         if (branch_info->rebase) {
 942                 printf("rebases onto remote %s\n", merge->items[0].string);
 943                 return 0;
 944         } else if (show_info->any_rebase) {
 945                 printf(" merges with remote %s\n", merge->items[0].string);
 946                 also = "    and with remote";
 947         } else {
 948                 printf("merges with remote %s\n", merge->items[0].string);
 949                 also = "   and with remote";
 950         }
 951         for (i = 1; i < merge->nr; i++)
 952                 printf("    %-*s %s %s\n", show_info->width, "", also,
 953                        merge->items[i].string);
 954
 955         return 0;
 956 }
 957
 958 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 959 {
 960         struct show_info *show_info = cb_data;
 961         struct push_info *push_info = push_item->util;
 962         struct string_list_item *item;
 963         int n;
 964         if ((n = strlen(push_item->string)) > show_info->width)
 965                 show_info->width = n;
 966         if ((n = strlen(push_info->dest)) > show_info->width2)
 967                 show_info->width2 = n;
 968         item = string_list_append(show_info->list, push_item->string);
 969         item->util = push_item->util;
 970         return 0;
 971 }
 972
 973 /*
 974  * Sorting comparison for a string list that has push_info
 975  * structs in its util field
 976  */
 977 static int cmp_string_with_push(const void *va, const void *vb)
 978 {
 979         const struct string_list_item *a = va;
 980         const struct string_list_item *b = vb;
 981         const struct push_info *a_push = a->util;
 982         const struct push_info *b_push = b->util;
 983         int cmp = strcmp(a->string, b->string);
 984         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
 985 }
 986
 987 static int show_push_info_item(struct string_list_item *item, void *cb_data)
 988 {
 989         struct show_info *show_info = cb_data;
 990         struct push_info *push_info = item->util;
 991         char *src = item->string, *status = NULL;
 992
 993         switch (push_info->status) {
 994         case PUSH_STATUS_CREATE:
 995                 status = "create";
 996                 break;
 997         case PUSH_STATUS_DELETE:
 998                 status = "delete";
 999                 src = "(none)";
1000                 break;
1001         case PUSH_STATUS_UPTODATE:
1002                 status = "up to date";
1003                 break;
1004         case PUSH_STATUS_FASTFORWARD:
1005                 status = "fast-forwardable";
1006                 break;
1007         case PUSH_STATUS_OUTOFDATE:
1008                 status = "local out of date";
1009                 break;
1010         case PUSH_STATUS_NOTQUERIED:
1011                 break;
1012         }
1013         if (status)
1014                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
1015                         push_info->forced ? "forces" : "pushes",
1016                         show_info->width2, push_info->dest, status);
1017         else
1018                 printf("    %-*s %s to %s\n", show_info->width, src,
1019                         push_info->forced ? "forces" : "pushes",
1020                         push_info->dest);
1021         return 0;
1022 }
1023
1024 static int show(int argc, const char **argv)
1025 {
1026         int no_query = 0, result = 0, query_flag = 0;
1027         struct option options[] = {
1028                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1029                 OPT_END()
1030         };
1031         struct ref_states states;
1032         struct string_list info_list = { NULL, 0, 0, 0 };
1033         struct show_info info;
1034
1035         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1036                              0);
1037
1038         if (argc < 1)
1039                 return show_all();
1040
1041         if (!no_query)
1042                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1043
1044         memset(&states, 0, sizeof(states));
1045         memset(&info, 0, sizeof(info));
1046         info.states = &states;
1047         info.list = &info_list;
1048         for (; argc; argc--, argv++) {
1049                 int i;
1050                 const char **url;
1051                 int url_nr;
1052
1053                 get_remote_ref_states(*argv, &states, query_flag);
1054
1055                 printf("* remote %s\n", *argv);
1056                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1057                         states.remote->url[0] : "(no URL)");
1058                 if (states.remote->pushurl_nr) {
1059                         url = states.remote->pushurl;
1060                         url_nr = states.remote->pushurl_nr;
1061                 } else {
1062                         url = states.remote->url;
1063                         url_nr = states.remote->url_nr;
1064                 }
1065                 for (i=0; i < url_nr; i++)
1066                         printf("  Push  URL: %s\n", url[i]);
1067                 if (!i)
1068                         printf("  Push  URL: %s\n", "(no URL)");
1069                 if (no_query)
1070                         printf("  HEAD branch: (not queried)\n");
1071                 else if (!states.heads.nr)
1072                         printf("  HEAD branch: (unknown)\n");
1073                 else if (states.heads.nr == 1)
1074                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1075                 else {
1076                         printf("  HEAD branch (remote HEAD is ambiguous,"
1077                                " may be one of the following):\n");
1078                         for (i = 0; i < states.heads.nr; i++)
1079                                 printf("    %s\n", states.heads.items[i].string);
1080                 }
1081
1082                 /* remote branch info */
1083                 info.width = 0;
1084                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1085                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1086                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1087                 if (info.list->nr)
1088                         printf("  Remote branch%s:%s\n",
1089                                info.list->nr > 1 ? "es" : "",
1090                                 no_query ? " (status not queried)" : "");
1091                 for_each_string_list(info.list, show_remote_info_item, &info);
1092                 string_list_clear(info.list, 0);
1093
1094                 /* git pull info */
1095                 info.width = 0;
1096                 info.any_rebase = 0;
1097                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1098                 if (info.list->nr)
1099                         printf("  Local branch%s configured for 'git pull':\n",
1100                                info.list->nr > 1 ? "es" : "");
1101                 for_each_string_list(info.list, show_local_info_item, &info);
1102                 string_list_clear(info.list, 0);
1103
1104                 /* git push info */
1105                 if (states.remote->mirror)
1106                         printf("  Local refs will be mirrored by 'git push'\n");
1107
1108                 info.width = info.width2 = 0;
1109                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1110                 qsort(info.list->items, info.list->nr,
1111                         sizeof(*info.list->items), cmp_string_with_push);
1112                 if (info.list->nr)
1113                         printf("  Local ref%s configured for 'git push'%s:\n",
1114                                 info.list->nr > 1 ? "s" : "",
1115                                 no_query ? " (status not queried)" : "");
1116                 for_each_string_list(info.list, show_push_info_item, &info);
1117                 string_list_clear(info.list, 0);
1118
1119                 free_remote_ref_states(&states);
1120         }
1121
1122         return result;
1123 }
1124
1125 static int set_head(int argc, const char **argv)
1126 {
1127         int i, opt_a = 0, opt_d = 0, result = 0;
1128         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1129         char *head_name = NULL;
1130
1131         struct option options[] = {
1132                 OPT_BOOLEAN('a', "auto", &opt_a,
1133                             "set refs/remotes/<name>/HEAD according to remote"),
1134                 OPT_BOOLEAN('d', "delete", &opt_d,
1135                             "delete refs/remotes/<name>/HEAD"),
1136                 OPT_END()
1137         };
1138         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1139                              0);
1140         if (argc)
1141                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1142
1143         if (!opt_a && !opt_d && argc == 2) {
1144                 head_name = xstrdup(argv[1]);
1145         } else if (opt_a && !opt_d && argc == 1) {
1146                 struct ref_states states;
1147                 memset(&states, 0, sizeof(states));
1148                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1149                 if (!states.heads.nr)
1150                         result |= error("Cannot determine remote HEAD");
1151                 else if (states.heads.nr > 1) {
1152                         result |= error("Multiple remote HEAD branches. "
1153                                         "Please choose one explicitly with:");
1154                         for (i = 0; i < states.heads.nr; i++)
1155                                 fprintf(stderr, "  git remote set-head %s %s\n",
1156                                         argv[0], states.heads.items[i].string);
1157                 } else
1158                         head_name = xstrdup(states.heads.items[0].string);
1159                 free_remote_ref_states(&states);
1160         } else if (opt_d && !opt_a && argc == 1) {
1161                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1162                         result |= error("Could not delete %s", buf.buf);
1163         } else
1164                 usage_with_options(builtin_remote_sethead_usage, options);
1165
1166         if (head_name) {
1167                 unsigned char sha1[20];
1168                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1169                 /* make sure it's valid */
1170                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1171                         result |= error("Not a valid ref: %s", buf2.buf);
1172                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1173                         result |= error("Could not setup %s", buf.buf);
1174                 if (opt_a)
1175                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1176                 free(head_name);
1177         }
1178
1179         strbuf_release(&buf);
1180         strbuf_release(&buf2);
1181         return result;
1182 }
1183
1184 static int prune(int argc, const char **argv)
1185 {
1186         int dry_run = 0, result = 0;
1187         struct option options[] = {
1188                 OPT__DRY_RUN(&dry_run),
1189                 OPT_END()
1190         };
1191
1192         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1193                              0);
1194
1195         if (argc < 1)
1196                 usage_with_options(builtin_remote_prune_usage, options);
1197
1198         for (; argc; argc--, argv++)
1199                 result |= prune_remote(*argv, dry_run);
1200
1201         return result;
1202 }
1203
1204 static int prune_remote(const char *remote, int dry_run)
1205 {
1206         int result = 0, i;
1207         struct ref_states states;
1208         const char *dangling_msg = dry_run
1209                 ? " %s will become dangling!\n"
1210                 : " %s has become dangling!\n";
1211
1212         memset(&states, 0, sizeof(states));
1213         get_remote_ref_states(remote, &states, GET_REF_STATES);
1214
1215         if (states.stale.nr) {
1216                 printf("Pruning %s\n", remote);
1217                 printf("URL: %s\n",
1218                        states.remote->url_nr
1219                        ? states.remote->url[0]
1220                        : "(no URL)");
1221         }
1222
1223         for (i = 0; i < states.stale.nr; i++) {
1224                 const char *refname = states.stale.items[i].util;
1225
1226                 if (!dry_run)
1227                         result |= delete_ref(refname, NULL, 0);
1228
1229                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1230                        abbrev_ref(refname, "refs/remotes/"));
1231                 warn_dangling_symref(stdout, dangling_msg, refname);
1232         }
1233
1234         free_remote_ref_states(&states);
1235         return result;
1236 }
1237
1238 static int get_remote_default(const char *key, const char *value, void *priv)
1239 {
1240         if (strcmp(key, "remotes.default") == 0) {
1241                 int *found = priv;
1242                 *found = 1;
1243         }
1244         return 0;
1245 }
1246
1247 static int update(int argc, const char **argv)
1248 {
1249         int i, prune = 0;
1250         struct option options[] = {
1251                 OPT_BOOLEAN('p', "prune", &prune,
1252                             "prune remotes after fetching"),
1253                 OPT_END()
1254         };
1255         const char **fetch_argv;
1256         int fetch_argc = 0;
1257         int default_defined = 0;
1258
1259         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1260
1261         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1262                              PARSE_OPT_KEEP_ARGV0);
1263
1264         fetch_argv[fetch_argc++] = "fetch";
1265
1266         if (prune)
1267                 fetch_argv[fetch_argc++] = "--prune";
1268         if (verbose)
1269                 fetch_argv[fetch_argc++] = "-v";
1270         fetch_argv[fetch_argc++] = "--multiple";
1271         if (argc < 2)
1272                 fetch_argv[fetch_argc++] = "default";
1273         for (i = 1; i < argc; i++)
1274                 fetch_argv[fetch_argc++] = argv[i];
1275
1276         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1277                 git_config(get_remote_default, &default_defined);
1278                 if (!default_defined)
1279                         fetch_argv[fetch_argc-1] = "--all";
1280         }
1281
1282         fetch_argv[fetch_argc] = NULL;
1283
1284         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1285 }
1286
1287 static int set_url(int argc, const char **argv)
1288 {
1289         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1290         int matches = 0, negative_matches = 0;
1291         const char *remotename = NULL;
1292         const char *newurl = NULL;
1293         const char *oldurl = NULL;
1294         struct remote *remote;
1295         regex_t old_regex;
1296         const char **urlset;
1297         int urlset_nr;
1298         struct strbuf name_buf = STRBUF_INIT;
1299         struct option options[] = {
1300                 OPT_BOOLEAN('\0', "push", &push_mode,
1301                             "manipulate push URLs"),
1302                 OPT_BOOLEAN('\0', "add", &add_mode,
1303                             "add URL"),
1304                 OPT_BOOLEAN('\0', "delete", &delete_mode,
1305                             "delete URLs"),
1306                 OPT_END()
1307         };
1308         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1309                              PARSE_OPT_KEEP_ARGV0);
1310
1311         if (add_mode && delete_mode)
1312                 die("--add --delete doesn't make sense");
1313
1314         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1315                 usage_with_options(builtin_remote_seturl_usage, options);
1316
1317         remotename = argv[1];
1318         newurl = argv[2];
1319         if (argc > 3)
1320                 oldurl = argv[3];
1321
1322         if (delete_mode)
1323                 oldurl = newurl;
1324
1325         if (!remote_is_configured(remotename))
1326                 die("No such remote '%s'", remotename);
1327         remote = remote_get(remotename);
1328
1329         if (push_mode) {
1330                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1331                 urlset = remote->pushurl;
1332                 urlset_nr = remote->pushurl_nr;
1333         } else {
1334                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1335                 urlset = remote->url;
1336                 urlset_nr = remote->url_nr;
1337         }
1338
1339         /* Special cases that add new entry. */
1340         if ((!oldurl && !delete_mode) || add_mode) {
1341                 if (add_mode)
1342                         git_config_set_multivar(name_buf.buf, newurl,
1343                                 "^$", 0);
1344                 else
1345                         git_config_set(name_buf.buf, newurl);
1346                 strbuf_release(&name_buf);
1347                 return 0;
1348         }
1349
1350         /* Old URL specified. Demand that one matches. */
1351         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1352                 die("Invalid old URL pattern: %s", oldurl);
1353
1354         for (i = 0; i < urlset_nr; i++)
1355                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1356                         matches++;
1357                 else
1358                         negative_matches++;
1359         if (!delete_mode && !matches)
1360                 die("No such URL found: %s", oldurl);
1361         if (delete_mode && !negative_matches && !push_mode)
1362                 die("Will not delete all non-push URLs");
1363
1364         regfree(&old_regex);
1365
1366         if (!delete_mode)
1367                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1368         else
1369                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1370         return 0;
1371 }
1372
1373 static int get_one_entry(struct remote *remote, void *priv)
1374 {
1375         struct string_list *list = priv;
1376         struct strbuf url_buf = STRBUF_INIT;
1377         const char **url;
1378         int i, url_nr;
1379
1380         if (remote->url_nr > 0) {
1381                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1382                 string_list_append(list, remote->name)->util =
1383                                 strbuf_detach(&url_buf, NULL);
1384         } else
1385                 string_list_append(list, remote->name)->util = NULL;
1386         if (remote->pushurl_nr) {
1387                 url = remote->pushurl;
1388                 url_nr = remote->pushurl_nr;
1389         } else {
1390                 url = remote->url;
1391                 url_nr = remote->url_nr;
1392         }
1393         for (i = 0; i < url_nr; i++)
1394         {
1395                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1396                 string_list_append(list, remote->name)->util =
1397                                 strbuf_detach(&url_buf, NULL);
1398         }
1399
1400         return 0;
1401 }
1402
1403 static int show_all(void)
1404 {
1405         struct string_list list = { NULL, 0, 0 };
1406         int result;
1407
1408         list.strdup_strings = 1;
1409         result = for_each_remote(get_one_entry, &list);
1410
1411         if (!result) {
1412                 int i;
1413
1414                 sort_string_list(&list);
1415                 for (i = 0; i < list.nr; i++) {
1416                         struct string_list_item *item = list.items + i;
1417                         if (verbose)
1418                                 printf("%s\t%s\n", item->string,
1419                                         item->util ? (const char *)item->util : "");
1420                         else {
1421                                 if (i && !strcmp((item - 1)->string, item->string))
1422                                         continue;
1423                                 printf("%s\n", item->string);
1424                         }
1425                 }
1426         }
1427         string_list_clear(&list, 1);
1428         return result;
1429 }
1430
1431 int cmd_remote(int argc, const char **argv, const char *prefix)
1432 {
1433         struct option options[] = {
1434                 OPT_BOOLEAN('v', "verbose", &verbose, "be verbose; must be placed before a subcommand"),
1435                 OPT_END()
1436         };
1437         int result;
1438
1439         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1440                 PARSE_OPT_STOP_AT_NON_OPTION);
1441
1442         if (argc < 1)
1443                 result = show_all();
1444         else if (!strcmp(argv[0], "add"))
1445                 result = add(argc, argv);
1446         else if (!strcmp(argv[0], "rename"))
1447                 result = mv(argc, argv);
1448         else if (!strcmp(argv[0], "rm"))
1449                 result = rm(argc, argv);
1450         else if (!strcmp(argv[0], "set-head"))
1451                 result = set_head(argc, argv);
1452         else if (!strcmp(argv[0], "set-url"))
1453                 result = set_url(argc, argv);
1454         else if (!strcmp(argv[0], "show"))
1455                 result = show(argc, argv);
1456         else if (!strcmp(argv[0], "prune"))
1457                 result = prune(argc, argv);
1458         else if (!strcmp(argv[0], "update"))
1459                 result = update(argc, argv);
1460         else {
1461                 error("Unknown subcommand: %s", argv[0]);
1462                 usage_with_options(builtin_remote_usage, options);
1463         }
1464
1465         return result ? 1 : 0;
1466 }