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