git.oblomov.eu Git - git/blob - 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-branches <name> [--add] <branch>...",
  20         "git remote set-url <name> <newurl> [<oldurl>]",
  21         "git remote set-url --add <name> <newurl>",
  22         "git remote set-url --delete <name> <url>",
  23         NULL
  24 };
  25
  26 static const char * const builtin_remote_add_usage[] = {
  27         "git remote add [<options>] <name> <url>",
  28         NULL
  29 };
  30
  31 static const char * const builtin_remote_rename_usage[] = {
  32         "git remote rename <old> <new>",
  33         NULL
  34 };
  35
  36 static const char * const builtin_remote_rm_usage[] = {
  37         "git remote rm <name>",
  38         NULL
  39 };
  40
  41 static const char * const builtin_remote_sethead_usage[] = {
  42         "git remote set-head <name> (-a | -d | <branch>])",
  43         NULL
  44 };
  45
  46 static const char * const builtin_remote_setbranches_usage[] = {
  47         "git remote set-branches <name> <branch>...",
  48         "git remote set-branches --add <name> <branch>...",
  49         NULL
  50 };
  51
  52 static const char * const builtin_remote_show_usage[] = {
  53         "git remote show [<options>] <name>",
  54         NULL
  55 };
  56
  57 static const char * const builtin_remote_prune_usage[] = {
  58         "git remote prune [<options>] <name>",
  59         NULL
  60 };
  61
  62 static const char * const builtin_remote_update_usage[] = {
  63         "git remote update [<options>] [<group> | <remote>]...",
  64         NULL
  65 };
  66
  67 static const char * const builtin_remote_seturl_usage[] = {
  68         "git remote set-url [--push] <name> <newurl> [<oldurl>]",
  69         "git remote set-url --add <name> <newurl>",
  70         "git remote set-url --delete <name> <url>",
  71         NULL
  72 };
  73
  74 #define GET_REF_STATES (1<<0)
  75 #define GET_HEAD_NAMES (1<<1)
  76 #define GET_PUSH_REF_STATES (1<<2)
  77
  78 static int verbose;
  79
  80 static int show_all(void);
  81 static int prune_remote(const char *remote, int dry_run);
  82
  83 static inline int postfixcmp(const char *string, const char *postfix)
  84 {
  85         int len1 = strlen(string), len2 = strlen(postfix);
  86         if (len1 < len2)
  87                 return 1;
  88         return strcmp(string + len1 - len2, postfix);
  89 }
  90
  91 static int opt_parse_track(const struct option *opt, const char *arg, int not)
  92 {
  93         struct string_list *list = opt->value;
  94         if (not)
  95                 string_list_clear(list, 0);
  96         else
  97                 string_list_append(list, arg);
  98         return 0;
  99 }
 100
 101 static int fetch_remote(const char *name)
 102 {
 103         const char *argv[] = { "fetch", name, NULL, NULL };
 104         if (verbose) {
 105                 argv[1] = "-v";
 106                 argv[2] = name;
 107         }
 108         printf("Updating %s\n", name);
 109         if (run_command_v_opt(argv, RUN_GIT_CMD))
 110                 return error("Could not fetch %s", name);
 111         return 0;
 112 }
 113
 114 enum {
 115         TAGS_UNSET = 0,
 116         TAGS_DEFAULT = 1,
 117         TAGS_SET = 2
 118 };
 119
 120 static int add_branch(const char *key, const char *branchname,
 121                 const char *remotename, int mirror, struct strbuf *tmp)
 122 {
 123         strbuf_reset(tmp);
 124         strbuf_addch(tmp, '+');
 125         if (mirror)
 126                 strbuf_addf(tmp, "refs/%s:refs/%s",
 127                                 branchname, branchname);
 128         else
 129                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 130                                 branchname, remotename, branchname);
 131         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 132 }
 133
 134 static int add(int argc, const char **argv)
 135 {
 136         int fetch = 0, mirror = 0, fetch_tags = TAGS_DEFAULT;
 137         struct string_list track = STRING_LIST_INIT_NODUP;
 138         const char *master = NULL;
 139         struct remote *remote;
 140         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 141         const char *name, *url;
 142         int i;
 143
 144         struct option options[] = {
 145                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
 146                 OPT_SET_INT(0, "tags", &fetch_tags,
 147                             "import all tags and associated objects when fetching",
 148                             TAGS_SET),
 149                 OPT_SET_INT(0, NULL, &fetch_tags,
 150                             "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
 151                 OPT_CALLBACK('t', "track", &track, "branch",
 152                         "branch(es) to track", opt_parse_track),
 153                 OPT_STRING('m', "master", &master, "branch", "master branch"),
 154                 OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
 155                 OPT_END()
 156         };
 157
 158         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 159                              0);
 160
 161         if (argc < 2)
 162                 usage_with_options(builtin_remote_add_usage, options);
 163
 164         if (mirror && master)
 165                 die("specifying a master branch makes no sense with --mirror");
 166         if (mirror && track.nr)
 167                 die("specifying branches to track makes no sense with --mirror");
 168
 169         name = argv[0];
 170         url = argv[1];
 171
 172         remote = remote_get(name);
 173         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 174                         remote->fetch_refspec_nr))
 175                 die("remote %s already exists.", name);
 176
 177         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 178         if (!valid_fetch_refspec(buf2.buf))
 179                 die("'%s' is not a valid remote name", name);
 180
 181         strbuf_addf(&buf, "remote.%s.url", name);
 182         if (git_config_set(buf.buf, url))
 183                 return 1;
 184
 185         strbuf_reset(&buf);
 186         strbuf_addf(&buf, "remote.%s.fetch", name);
 187
 188         if (track.nr == 0)
 189                 string_list_append(&track, "*");
 190         for (i = 0; i < track.nr; i++) {
 191                 if (add_branch(buf.buf, track.items[i].string,
 192                                 name, mirror, &buf2))
 193                         return 1;
 194         }
 195
 196         if (mirror) {
 197                 strbuf_reset(&buf);
 198                 strbuf_addf(&buf, "remote.%s.mirror", name);
 199                 if (git_config_set(buf.buf, "true"))
 200                         return 1;
 201         }
 202
 203         if (fetch_tags != TAGS_DEFAULT) {
 204                 strbuf_reset(&buf);
 205                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 206                 if (git_config_set(buf.buf,
 207                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 208                         return 1;
 209         }
 210
 211         if (fetch && fetch_remote(name))
 212                 return 1;
 213
 214         if (master) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 217
 218                 strbuf_reset(&buf2);
 219                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 220
 221                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 222                         return error("Could not setup master '%s'", master);
 223         }
 224
 225         strbuf_release(&buf);
 226         strbuf_release(&buf2);
 227         string_list_clear(&track, 0);
 228
 229         return 0;
 230 }
 231
 232 struct branch_info {
 233         char *remote_name;
 234         struct string_list merge;
 235         int rebase;
 236 };
 237
 238 static struct string_list branch_list;
 239
 240 static const char *abbrev_ref(const char *name, const char *prefix)
 241 {
 242         const char *abbrev = skip_prefix(name, prefix);
 243         if (abbrev)
 244                 return abbrev;
 245         return name;
 246 }
 247 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 248
 249 static int config_read_branches(const char *key, const char *value, void *cb)
 250 {
 251         if (!prefixcmp(key, "branch.")) {
 252                 const char *orig_key = key;
 253                 char *name;
 254                 struct string_list_item *item;
 255                 struct branch_info *info;
 256                 enum { REMOTE, MERGE, REBASE } type;
 257
 258                 key += 7;
 259                 if (!postfixcmp(key, ".remote")) {
 260                         name = xstrndup(key, strlen(key) - 7);
 261                         type = REMOTE;
 262                 } else if (!postfixcmp(key, ".merge")) {
 263                         name = xstrndup(key, strlen(key) - 6);
 264                         type = MERGE;
 265                 } else if (!postfixcmp(key, ".rebase")) {
 266                         name = xstrndup(key, strlen(key) - 7);
 267                         type = REBASE;
 268                 } else
 269                         return 0;
 270
 271                 item = string_list_insert(&branch_list, name);
 272
 273                 if (!item->util)
 274                         item->util = xcalloc(sizeof(struct branch_info), 1);
 275                 info = item->util;
 276                 if (type == REMOTE) {
 277                         if (info->remote_name)
 278                                 warning("more than one %s", orig_key);
 279                         info->remote_name = xstrdup(value);
 280                 } else if (type == MERGE) {
 281                         char *space = strchr(value, ' ');
 282                         value = abbrev_branch(value);
 283                         while (space) {
 284                                 char *merge;
 285                                 merge = xstrndup(value, space - value);
 286                                 string_list_append(&info->merge, merge);
 287                                 value = abbrev_branch(space + 1);
 288                                 space = strchr(value, ' ');
 289                         }
 290                         string_list_append(&info->merge, xstrdup(value));
 291                 } else
 292                         info->rebase = git_config_bool(orig_key, value);
 293         }
 294         return 0;
 295 }
 296
 297 static void read_branches(void)
 298 {
 299         if (branch_list.nr)
 300                 return;
 301         git_config(config_read_branches, NULL);
 302 }
 303
 304 struct ref_states {
 305         struct remote *remote;
 306         struct string_list new, stale, tracked, heads, push;
 307         int queried;
 308 };
 309
 310 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 311 {
 312         struct ref *fetch_map = NULL, **tail = &fetch_map;
 313         struct ref *ref, *stale_refs;
 314         int i;
 315
 316         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 317                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 318                         die("Could not get fetch map for refspec %s",
 319                                 states->remote->fetch_refspec[i]);
 320
 321         states->new.strdup_strings = 1;
 322         states->tracked.strdup_strings = 1;
 323         states->stale.strdup_strings = 1;
 324         for (ref = fetch_map; ref; ref = ref->next) {
 325                 unsigned char sha1[20];
 326                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 327                         string_list_append(&states->new, abbrev_branch(ref->name));
 328                 else
 329                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 330         }
 331         stale_refs = get_stale_heads(states->remote, fetch_map);
 332         for (ref = stale_refs; ref; ref = ref->next) {
 333                 struct string_list_item *item =
 334                         string_list_append(&states->stale, abbrev_branch(ref->name));
 335                 item->util = xstrdup(ref->name);
 336         }
 337         free_refs(stale_refs);
 338         free_refs(fetch_map);
 339
 340         sort_string_list(&states->new);
 341         sort_string_list(&states->tracked);
 342         sort_string_list(&states->stale);
 343
 344         return 0;
 345 }
 346
 347 struct push_info {
 348         char *dest;
 349         int forced;
 350         enum {
 351                 PUSH_STATUS_CREATE = 0,
 352                 PUSH_STATUS_DELETE,
 353                 PUSH_STATUS_UPTODATE,
 354                 PUSH_STATUS_FASTFORWARD,
 355                 PUSH_STATUS_OUTOFDATE,
 356                 PUSH_STATUS_NOTQUERIED
 357         } status;
 358 };
 359
 360 static int get_push_ref_states(const struct ref *remote_refs,
 361         struct ref_states *states)
 362 {
 363         struct remote *remote = states->remote;
 364         struct ref *ref, *local_refs, *push_map;
 365         if (remote->mirror)
 366                 return 0;
 367
 368         local_refs = get_local_heads();
 369         push_map = copy_ref_list(remote_refs);
 370
 371         match_refs(local_refs, &push_map, remote->push_refspec_nr,
 372                    remote->push_refspec, MATCH_REFS_NONE);
 373
 374         states->push.strdup_strings = 1;
 375         for (ref = push_map; ref; ref = ref->next) {
 376                 struct string_list_item *item;
 377                 struct push_info *info;
 378
 379                 if (!ref->peer_ref)
 380                         continue;
 381                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 382
 383                 item = string_list_append(&states->push,
 384                                           abbrev_branch(ref->peer_ref->name));
 385                 item->util = xcalloc(sizeof(struct push_info), 1);
 386                 info = item->util;
 387                 info->forced = ref->force;
 388                 info->dest = xstrdup(abbrev_branch(ref->name));
 389
 390                 if (is_null_sha1(ref->new_sha1)) {
 391                         info->status = PUSH_STATUS_DELETE;
 392                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 393                         info->status = PUSH_STATUS_UPTODATE;
 394                 else if (is_null_sha1(ref->old_sha1))
 395                         info->status = PUSH_STATUS_CREATE;
 396                 else if (has_sha1_file(ref->old_sha1) &&
 397                          ref_newer(ref->new_sha1, ref->old_sha1))
 398                         info->status = PUSH_STATUS_FASTFORWARD;
 399                 else
 400                         info->status = PUSH_STATUS_OUTOFDATE;
 401         }
 402         free_refs(local_refs);
 403         free_refs(push_map);
 404         return 0;
 405 }
 406
 407 static int get_push_ref_states_noquery(struct ref_states *states)
 408 {
 409         int i;
 410         struct remote *remote = states->remote;
 411         struct string_list_item *item;
 412         struct push_info *info;
 413
 414         if (remote->mirror)
 415                 return 0;
 416
 417         states->push.strdup_strings = 1;
 418         if (!remote->push_refspec_nr) {
 419                 item = string_list_append(&states->push, "(matching)");
 420                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 421                 info->status = PUSH_STATUS_NOTQUERIED;
 422                 info->dest = xstrdup(item->string);
 423         }
 424         for (i = 0; i < remote->push_refspec_nr; i++) {
 425                 struct refspec *spec = remote->push + i;
 426                 if (spec->matching)
 427                         item = string_list_append(&states->push, "(matching)");
 428                 else if (strlen(spec->src))
 429                         item = string_list_append(&states->push, spec->src);
 430                 else
 431                         item = string_list_append(&states->push, "(delete)");
 432
 433                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 434                 info->forced = spec->force;
 435                 info->status = PUSH_STATUS_NOTQUERIED;
 436                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 437         }
 438         return 0;
 439 }
 440
 441 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 442 {
 443         struct ref *ref, *matches;
 444         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 445         struct refspec refspec;
 446
 447         refspec.force = 0;
 448         refspec.pattern = 1;
 449         refspec.src = refspec.dst = "refs/heads/*";
 450         states->heads.strdup_strings = 1;
 451         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 452         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 453                                     fetch_map, 1);
 454         for (ref = matches; ref; ref = ref->next)
 455                 string_list_append(&states->heads, abbrev_branch(ref->name));
 456
 457         free_refs(fetch_map);
 458         free_refs(matches);
 459
 460         return 0;
 461 }
 462
 463 struct known_remote {
 464         struct known_remote *next;
 465         struct remote *remote;
 466 };
 467
 468 struct known_remotes {
 469         struct remote *to_delete;
 470         struct known_remote *list;
 471 };
 472
 473 static int add_known_remote(struct remote *remote, void *cb_data)
 474 {
 475         struct known_remotes *all = cb_data;
 476         struct known_remote *r;
 477
 478         if (!strcmp(all->to_delete->name, remote->name))
 479                 return 0;
 480
 481         r = xmalloc(sizeof(*r));
 482         r->remote = remote;
 483         r->next = all->list;
 484         all->list = r;
 485         return 0;
 486 }
 487
 488 struct branches_for_remote {
 489         struct remote *remote;
 490         struct string_list *branches, *skipped;
 491         struct known_remotes *keep;
 492 };
 493
 494 static int add_branch_for_removal(const char *refname,
 495         const unsigned char *sha1, int flags, void *cb_data)
 496 {
 497         struct branches_for_remote *branches = cb_data;
 498         struct refspec refspec;
 499         struct string_list_item *item;
 500         struct known_remote *kr;
 501
 502         memset(&refspec, 0, sizeof(refspec));
 503         refspec.dst = (char *)refname;
 504         if (remote_find_tracking(branches->remote, &refspec))
 505                 return 0;
 506
 507         /* don't delete a branch if another remote also uses it */
 508         for (kr = branches->keep->list; kr; kr = kr->next) {
 509                 memset(&refspec, 0, sizeof(refspec));
 510                 refspec.dst = (char *)refname;
 511                 if (!remote_find_tracking(kr->remote, &refspec))
 512                         return 0;
 513         }
 514
 515         /* don't delete non-remote-tracking refs */
 516         if (prefixcmp(refname, "refs/remotes")) {
 517                 /* advise user how to delete local branches */
 518                 if (!prefixcmp(refname, "refs/heads/"))
 519                         string_list_append(branches->skipped,
 520                                            abbrev_branch(refname));
 521                 /* silently skip over other non-remote refs */
 522                 return 0;
 523         }
 524
 525         /* make sure that symrefs are deleted */
 526         if (flags & REF_ISSYMREF)
 527                 return unlink(git_path("%s", refname));
 528
 529         item = string_list_append(branches->branches, refname);
 530         item->util = xmalloc(20);
 531         hashcpy(item->util, sha1);
 532
 533         return 0;
 534 }
 535
 536 struct rename_info {
 537         const char *old;
 538         const char *new;
 539         struct string_list *remote_branches;
 540 };
 541
 542 static int read_remote_branches(const char *refname,
 543         const unsigned char *sha1, int flags, void *cb_data)
 544 {
 545         struct rename_info *rename = cb_data;
 546         struct strbuf buf = STRBUF_INIT;
 547         struct string_list_item *item;
 548         int flag;
 549         unsigned char orig_sha1[20];
 550         const char *symref;
 551
 552         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 553         if (!prefixcmp(refname, buf.buf)) {
 554                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 555                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
 556                 if (flag & REF_ISSYMREF)
 557                         item->util = xstrdup(symref);
 558                 else
 559                         item->util = NULL;
 560         }
 561
 562         return 0;
 563 }
 564
 565 static int migrate_file(struct remote *remote)
 566 {
 567         struct strbuf buf = STRBUF_INIT;
 568         int i;
 569         char *path = NULL;
 570
 571         strbuf_addf(&buf, "remote.%s.url", remote->name);
 572         for (i = 0; i < remote->url_nr; i++)
 573                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 574                         return error("Could not append '%s' to '%s'",
 575                                         remote->url[i], buf.buf);
 576         strbuf_reset(&buf);
 577         strbuf_addf(&buf, "remote.%s.push", remote->name);
 578         for (i = 0; i < remote->push_refspec_nr; i++)
 579                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 580                         return error("Could not append '%s' to '%s'",
 581                                         remote->push_refspec[i], buf.buf);
 582         strbuf_reset(&buf);
 583         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 584         for (i = 0; i < remote->fetch_refspec_nr; i++)
 585                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 586                         return error("Could not append '%s' to '%s'",
 587                                         remote->fetch_refspec[i], buf.buf);
 588         if (remote->origin == REMOTE_REMOTES)
 589                 path = git_path("remotes/%s", remote->name);
 590         else if (remote->origin == REMOTE_BRANCHES)
 591                 path = git_path("branches/%s", remote->name);
 592         if (path)
 593                 unlink_or_warn(path);
 594         return 0;
 595 }
 596
 597 static int mv(int argc, const char **argv)
 598 {
 599         struct option options[] = {
 600                 OPT_END()
 601         };
 602         struct remote *oldremote, *newremote;
 603         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 604         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 605         struct rename_info rename;
 606         int i;
 607
 608         if (argc != 3)
 609                 usage_with_options(builtin_remote_rename_usage, options);
 610
 611         rename.old = argv[1];
 612         rename.new = argv[2];
 613         rename.remote_branches = &remote_branches;
 614
 615         oldremote = remote_get(rename.old);
 616         if (!oldremote)
 617                 die("No such remote: %s", rename.old);
 618
 619         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 620                 return migrate_file(oldremote);
 621
 622         newremote = remote_get(rename.new);
 623         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 624                 die("remote %s already exists.", rename.new);
 625
 626         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 627         if (!valid_fetch_refspec(buf.buf))
 628                 die("'%s' is not a valid remote name", rename.new);
 629
 630         strbuf_reset(&buf);
 631         strbuf_addf(&buf, "remote.%s", rename.old);
 632         strbuf_addf(&buf2, "remote.%s", rename.new);
 633         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 634                 return error("Could not rename config section '%s' to '%s'",
 635                                 buf.buf, buf2.buf);
 636
 637         strbuf_reset(&buf);
 638         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 639         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 640                 return error("Could not remove config section '%s'", buf.buf);
 641         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 642                 char *ptr;
 643
 644                 strbuf_reset(&buf2);
 645                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 646                 ptr = strstr(buf2.buf, rename.old);
 647                 if (ptr)
 648                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 649                                         rename.new, strlen(rename.new));
 650                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 651                         return error("Could not append '%s'", buf.buf);
 652         }
 653
 654         read_branches();
 655         for (i = 0; i < branch_list.nr; i++) {
 656                 struct string_list_item *item = branch_list.items + i;
 657                 struct branch_info *info = item->util;
 658                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 659                         strbuf_reset(&buf);
 660                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 661                         if (git_config_set(buf.buf, rename.new)) {
 662                                 return error("Could not set '%s'", buf.buf);
 663                         }
 664                 }
 665         }
 666
 667         /*
 668          * First remove symrefs, then rename the rest, finally create
 669          * the new symrefs.
 670          */
 671         for_each_ref(read_remote_branches, &rename);
 672         for (i = 0; i < remote_branches.nr; i++) {
 673                 struct string_list_item *item = remote_branches.items + i;
 674                 int flag = 0;
 675                 unsigned char sha1[20];
 676
 677                 resolve_ref(item->string, sha1, 1, &flag);
 678                 if (!(flag & REF_ISSYMREF))
 679                         continue;
 680                 if (delete_ref(item->string, NULL, REF_NODEREF))
 681                         die("deleting '%s' failed", item->string);
 682         }
 683         for (i = 0; i < remote_branches.nr; i++) {
 684                 struct string_list_item *item = remote_branches.items + i;
 685
 686                 if (item->util)
 687                         continue;
 688                 strbuf_reset(&buf);
 689                 strbuf_addstr(&buf, item->string);
 690                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 691                                 rename.new, strlen(rename.new));
 692                 strbuf_reset(&buf2);
 693                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 694                                 item->string, buf.buf);
 695                 if (rename_ref(item->string, buf.buf, buf2.buf))
 696                         die("renaming '%s' failed", item->string);
 697         }
 698         for (i = 0; i < remote_branches.nr; i++) {
 699                 struct string_list_item *item = remote_branches.items + i;
 700
 701                 if (!item->util)
 702                         continue;
 703                 strbuf_reset(&buf);
 704                 strbuf_addstr(&buf, item->string);
 705                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 706                                 rename.new, strlen(rename.new));
 707                 strbuf_reset(&buf2);
 708                 strbuf_addstr(&buf2, item->util);
 709                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 710                                 rename.new, strlen(rename.new));
 711                 strbuf_reset(&buf3);
 712                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 713                                 item->string, buf.buf);
 714                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 715                         die("creating '%s' failed", buf.buf);
 716         }
 717         return 0;
 718 }
 719
 720 static int remove_branches(struct string_list *branches)
 721 {
 722         int i, result = 0;
 723         for (i = 0; i < branches->nr; i++) {
 724                 struct string_list_item *item = branches->items + i;
 725                 const char *refname = item->string;
 726                 unsigned char *sha1 = item->util;
 727
 728                 if (delete_ref(refname, sha1, 0))
 729                         result |= error("Could not remove branch %s", refname);
 730         }
 731         return result;
 732 }
 733
 734 static int rm(int argc, const char **argv)
 735 {
 736         struct option options[] = {
 737                 OPT_END()
 738         };
 739         struct remote *remote;
 740         struct strbuf buf = STRBUF_INIT;
 741         struct known_remotes known_remotes = { NULL, NULL };
 742         struct string_list branches = STRING_LIST_INIT_DUP;
 743         struct string_list skipped = STRING_LIST_INIT_DUP;
 744         struct branches_for_remote cb_data;
 745         int i, result;
 746
 747         memset(&cb_data, 0, sizeof(cb_data));
 748         cb_data.branches = &branches;
 749         cb_data.skipped = &skipped;
 750         cb_data.keep = &known_remotes;
 751
 752         if (argc != 2)
 753                 usage_with_options(builtin_remote_rm_usage, options);
 754
 755         remote = remote_get(argv[1]);
 756         if (!remote)
 757                 die("No such remote: %s", argv[1]);
 758
 759         known_remotes.to_delete = remote;
 760         for_each_remote(add_known_remote, &known_remotes);
 761
 762         strbuf_addf(&buf, "remote.%s", remote->name);
 763         if (git_config_rename_section(buf.buf, NULL) < 1)
 764                 return error("Could not remove config section '%s'", buf.buf);
 765
 766         read_branches();
 767         for (i = 0; i < branch_list.nr; i++) {
 768                 struct string_list_item *item = branch_list.items + i;
 769                 struct branch_info *info = item->util;
 770                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 771                         const char *keys[] = { "remote", "merge", NULL }, **k;
 772                         for (k = keys; *k; k++) {
 773                                 strbuf_reset(&buf);
 774                                 strbuf_addf(&buf, "branch.%s.%s",
 775                                                 item->string, *k);
 776                                 if (git_config_set(buf.buf, NULL)) {
 777                                         strbuf_release(&buf);
 778                                         return -1;
 779                                 }
 780                         }
 781                 }
 782         }
 783
 784         /*
 785          * We cannot just pass a function to for_each_ref() which deletes
 786          * the branches one by one, since for_each_ref() relies on cached
 787          * refs, which are invalidated when deleting a branch.
 788          */
 789         cb_data.remote = remote;
 790         result = for_each_ref(add_branch_for_removal, &cb_data);
 791         strbuf_release(&buf);
 792
 793         if (!result)
 794                 result = remove_branches(&branches);
 795         string_list_clear(&branches, 1);
 796
 797         if (skipped.nr) {
 798                 fprintf(stderr, skipped.nr == 1 ?
 799                         "Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 800                         "to delete it, use:\n" :
 801                         "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 802                         "to delete them, use:\n");
 803                 for (i = 0; i < skipped.nr; i++)
 804                         fprintf(stderr, "  git branch -d %s\n",
 805                                 skipped.items[i].string);
 806         }
 807         string_list_clear(&skipped, 0);
 808
 809         return result;
 810 }
 811
 812 static void clear_push_info(void *util, const char *string)
 813 {
 814         struct push_info *info = util;
 815         free(info->dest);
 816         free(info);
 817 }
 818
 819 static void free_remote_ref_states(struct ref_states *states)
 820 {
 821         string_list_clear(&states->new, 0);
 822         string_list_clear(&states->stale, 1);
 823         string_list_clear(&states->tracked, 0);
 824         string_list_clear(&states->heads, 0);
 825         string_list_clear_func(&states->push, clear_push_info);
 826 }
 827
 828 static int append_ref_to_tracked_list(const char *refname,
 829         const unsigned char *sha1, int flags, void *cb_data)
 830 {
 831         struct ref_states *states = cb_data;
 832         struct refspec refspec;
 833
 834         if (flags & REF_ISSYMREF)
 835                 return 0;
 836
 837         memset(&refspec, 0, sizeof(refspec));
 838         refspec.dst = (char *)refname;
 839         if (!remote_find_tracking(states->remote, &refspec))
 840                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 841
 842         return 0;
 843 }
 844
 845 static int get_remote_ref_states(const char *name,
 846                                  struct ref_states *states,
 847                                  int query)
 848 {
 849         struct transport *transport;
 850         const struct ref *remote_refs;
 851
 852         states->remote = remote_get(name);
 853         if (!states->remote)
 854                 return error("No such remote: %s", name);
 855
 856         read_branches();
 857
 858         if (query) {
 859                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 860                         states->remote->url[0] : NULL);
 861                 remote_refs = transport_get_remote_refs(transport);
 862                 transport_disconnect(transport);
 863
 864                 states->queried = 1;
 865                 if (query & GET_REF_STATES)
 866                         get_ref_states(remote_refs, states);
 867                 if (query & GET_HEAD_NAMES)
 868                         get_head_names(remote_refs, states);
 869                 if (query & GET_PUSH_REF_STATES)
 870                         get_push_ref_states(remote_refs, states);
 871         } else {
 872                 for_each_ref(append_ref_to_tracked_list, states);
 873                 sort_string_list(&states->tracked);
 874                 get_push_ref_states_noquery(states);
 875         }
 876
 877         return 0;
 878 }
 879
 880 struct show_info {
 881         struct string_list *list;
 882         struct ref_states *states;
 883         int width, width2;
 884         int any_rebase;
 885 };
 886
 887 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 888 {
 889         struct show_info *info = cb_data;
 890         int n = strlen(item->string);
 891         if (n > info->width)
 892                 info->width = n;
 893         string_list_insert(info->list, item->string);
 894         return 0;
 895 }
 896
 897 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 898 {
 899         struct show_info *info = cb_data;
 900         struct ref_states *states = info->states;
 901         const char *name = item->string;
 902
 903         if (states->queried) {
 904                 const char *fmt = "%s";
 905                 const char *arg = "";
 906                 if (string_list_has_string(&states->new, name)) {
 907                         fmt = " new (next fetch will store in remotes/%s)";
 908                         arg = states->remote->name;
 909                 } else if (string_list_has_string(&states->tracked, name))
 910                         arg = " tracked";
 911                 else if (string_list_has_string(&states->stale, name))
 912                         arg = " stale (use 'git remote prune' to remove)";
 913                 else
 914                         arg = " ???";
 915                 printf("    %-*s", info->width, name);
 916                 printf(fmt, arg);
 917                 printf("\n");
 918         } else
 919                 printf("    %s\n", name);
 920
 921         return 0;
 922 }
 923
 924 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 925 {
 926         struct show_info *show_info = cb_data;
 927         struct ref_states *states = show_info->states;
 928         struct branch_info *branch_info = branch_item->util;
 929         struct string_list_item *item;
 930         int n;
 931
 932         if (!branch_info->merge.nr || !branch_info->remote_name ||
 933             strcmp(states->remote->name, branch_info->remote_name))
 934                 return 0;
 935         if ((n = strlen(branch_item->string)) > show_info->width)
 936                 show_info->width = n;
 937         if (branch_info->rebase)
 938                 show_info->any_rebase = 1;
 939
 940         item = string_list_insert(show_info->list, branch_item->string);
 941         item->util = branch_info;
 942
 943         return 0;
 944 }
 945
 946 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 947 {
 948         struct show_info *show_info = cb_data;
 949         struct branch_info *branch_info = item->util;
 950         struct string_list *merge = &branch_info->merge;
 951         const char *also;
 952         int i;
 953
 954         if (branch_info->rebase && branch_info->merge.nr > 1) {
 955                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
 956                         item->string);
 957                 return 0;
 958         }
 959
 960         printf("    %-*s ", show_info->width, item->string);
 961         if (branch_info->rebase) {
 962                 printf("rebases onto remote %s\n", merge->items[0].string);
 963                 return 0;
 964         } else if (show_info->any_rebase) {
 965                 printf(" merges with remote %s\n", merge->items[0].string);
 966                 also = "    and with remote";
 967         } else {
 968                 printf("merges with remote %s\n", merge->items[0].string);
 969                 also = "   and with remote";
 970         }
 971         for (i = 1; i < merge->nr; i++)
 972                 printf("    %-*s %s %s\n", show_info->width, "", also,
 973                        merge->items[i].string);
 974
 975         return 0;
 976 }
 977
 978 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 979 {
 980         struct show_info *show_info = cb_data;
 981         struct push_info *push_info = push_item->util;
 982         struct string_list_item *item;
 983         int n;
 984         if ((n = strlen(push_item->string)) > show_info->width)
 985                 show_info->width = n;
 986         if ((n = strlen(push_info->dest)) > show_info->width2)
 987                 show_info->width2 = n;
 988         item = string_list_append(show_info->list, push_item->string);
 989         item->util = push_item->util;
 990         return 0;
 991 }
 992
 993 /*
 994  * Sorting comparison for a string list that has push_info
 995  * structs in its util field
 996  */
 997 static int cmp_string_with_push(const void *va, const void *vb)
 998 {
 999         const struct string_list_item *a = va;
1000         const struct string_list_item *b = vb;
1001         const struct push_info *a_push = a->util;
1002         const struct push_info *b_push = b->util;
1003         int cmp = strcmp(a->string, b->string);
1004         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1005 }
1006
1007 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1008 {
1009         struct show_info *show_info = cb_data;
1010         struct push_info *push_info = item->util;
1011         char *src = item->string, *status = NULL;
1012
1013         switch (push_info->status) {
1014         case PUSH_STATUS_CREATE:
1015                 status = "create";
1016                 break;
1017         case PUSH_STATUS_DELETE:
1018                 status = "delete";
1019                 src = "(none)";
1020                 break;
1021         case PUSH_STATUS_UPTODATE:
1022                 status = "up to date";
1023                 break;
1024         case PUSH_STATUS_FASTFORWARD:
1025                 status = "fast-forwardable";
1026                 break;
1027         case PUSH_STATUS_OUTOFDATE:
1028                 status = "local out of date";
1029                 break;
1030         case PUSH_STATUS_NOTQUERIED:
1031                 break;
1032         }
1033         if (status)
1034                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
1035                         push_info->forced ? "forces" : "pushes",
1036                         show_info->width2, push_info->dest, status);
1037         else
1038                 printf("    %-*s %s to %s\n", show_info->width, src,
1039                         push_info->forced ? "forces" : "pushes",
1040                         push_info->dest);
1041         return 0;
1042 }
1043
1044 static int show(int argc, const char **argv)
1045 {
1046         int no_query = 0, result = 0, query_flag = 0;
1047         struct option options[] = {
1048                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1049                 OPT_END()
1050         };
1051         struct ref_states states;
1052         struct string_list info_list = STRING_LIST_INIT_NODUP;
1053         struct show_info info;
1054
1055         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1056                              0);
1057
1058         if (argc < 1)
1059                 return show_all();
1060
1061         if (!no_query)
1062                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1063
1064         memset(&states, 0, sizeof(states));
1065         memset(&info, 0, sizeof(info));
1066         info.states = &states;
1067         info.list = &info_list;
1068         for (; argc; argc--, argv++) {
1069                 int i;
1070                 const char **url;
1071                 int url_nr;
1072
1073                 get_remote_ref_states(*argv, &states, query_flag);
1074
1075                 printf("* remote %s\n", *argv);
1076                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1077                         states.remote->url[0] : "(no URL)");
1078                 if (states.remote->pushurl_nr) {
1079                         url = states.remote->pushurl;
1080                         url_nr = states.remote->pushurl_nr;
1081                 } else {
1082                         url = states.remote->url;
1083                         url_nr = states.remote->url_nr;
1084                 }
1085                 for (i=0; i < url_nr; i++)
1086                         printf("  Push  URL: %s\n", url[i]);
1087                 if (!i)
1088                         printf("  Push  URL: %s\n", "(no URL)");
1089                 if (no_query)
1090                         printf("  HEAD branch: (not queried)\n");
1091                 else if (!states.heads.nr)
1092                         printf("  HEAD branch: (unknown)\n");
1093                 else if (states.heads.nr == 1)
1094                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1095                 else {
1096                         printf("  HEAD branch (remote HEAD is ambiguous,"
1097                                " may be one of the following):\n");
1098                         for (i = 0; i < states.heads.nr; i++)
1099                                 printf("    %s\n", states.heads.items[i].string);
1100                 }
1101
1102                 /* remote branch info */
1103                 info.width = 0;
1104                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1105                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1106                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1107                 if (info.list->nr)
1108                         printf("  Remote branch%s:%s\n",
1109                                info.list->nr > 1 ? "es" : "",
1110                                 no_query ? " (status not queried)" : "");
1111                 for_each_string_list(info.list, show_remote_info_item, &info);
1112                 string_list_clear(info.list, 0);
1113
1114                 /* git pull info */
1115                 info.width = 0;
1116                 info.any_rebase = 0;
1117                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1118                 if (info.list->nr)
1119                         printf("  Local branch%s configured for 'git pull':\n",
1120                                info.list->nr > 1 ? "es" : "");
1121                 for_each_string_list(info.list, show_local_info_item, &info);
1122                 string_list_clear(info.list, 0);
1123
1124                 /* git push info */
1125                 if (states.remote->mirror)
1126                         printf("  Local refs will be mirrored by 'git push'\n");
1127
1128                 info.width = info.width2 = 0;
1129                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1130                 qsort(info.list->items, info.list->nr,
1131                         sizeof(*info.list->items), cmp_string_with_push);
1132                 if (info.list->nr)
1133                         printf("  Local ref%s configured for 'git push'%s:\n",
1134                                 info.list->nr > 1 ? "s" : "",
1135                                 no_query ? " (status not queried)" : "");
1136                 for_each_string_list(info.list, show_push_info_item, &info);
1137                 string_list_clear(info.list, 0);
1138
1139                 free_remote_ref_states(&states);
1140         }
1141
1142         return result;
1143 }
1144
1145 static int set_head(int argc, const char **argv)
1146 {
1147         int i, opt_a = 0, opt_d = 0, result = 0;
1148         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1149         char *head_name = NULL;
1150
1151         struct option options[] = {
1152                 OPT_BOOLEAN('a', "auto", &opt_a,
1153                             "set refs/remotes/<name>/HEAD according to remote"),
1154                 OPT_BOOLEAN('d', "delete", &opt_d,
1155                             "delete refs/remotes/<name>/HEAD"),
1156                 OPT_END()
1157         };
1158         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1159                              0);
1160         if (argc)
1161                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1162
1163         if (!opt_a && !opt_d && argc == 2) {
1164                 head_name = xstrdup(argv[1]);
1165         } else if (opt_a && !opt_d && argc == 1) {
1166                 struct ref_states states;
1167                 memset(&states, 0, sizeof(states));
1168                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1169                 if (!states.heads.nr)
1170                         result |= error("Cannot determine remote HEAD");
1171                 else if (states.heads.nr > 1) {
1172                         result |= error("Multiple remote HEAD branches. "
1173                                         "Please choose one explicitly with:");
1174                         for (i = 0; i < states.heads.nr; i++)
1175                                 fprintf(stderr, "  git remote set-head %s %s\n",
1176                                         argv[0], states.heads.items[i].string);
1177                 } else
1178                         head_name = xstrdup(states.heads.items[0].string);
1179                 free_remote_ref_states(&states);
1180         } else if (opt_d && !opt_a && argc == 1) {
1181                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1182                         result |= error("Could not delete %s", buf.buf);
1183         } else
1184                 usage_with_options(builtin_remote_sethead_usage, options);
1185
1186         if (head_name) {
1187                 unsigned char sha1[20];
1188                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1189                 /* make sure it's valid */
1190                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1191                         result |= error("Not a valid ref: %s", buf2.buf);
1192                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1193                         result |= error("Could not setup %s", buf.buf);
1194                 if (opt_a)
1195                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1196                 free(head_name);
1197         }
1198
1199         strbuf_release(&buf);
1200         strbuf_release(&buf2);
1201         return result;
1202 }
1203
1204 static int prune(int argc, const char **argv)
1205 {
1206         int dry_run = 0, result = 0;
1207         struct option options[] = {
1208                 OPT__DRY_RUN(&dry_run, "dry run"),
1209                 OPT_END()
1210         };
1211
1212         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1213                              0);
1214
1215         if (argc < 1)
1216                 usage_with_options(builtin_remote_prune_usage, options);
1217
1218         for (; argc; argc--, argv++)
1219                 result |= prune_remote(*argv, dry_run);
1220
1221         return result;
1222 }
1223
1224 static int prune_remote(const char *remote, int dry_run)
1225 {
1226         int result = 0, i;
1227         struct ref_states states;
1228         const char *dangling_msg = dry_run
1229                 ? " %s will become dangling!\n"
1230                 : " %s has become dangling!\n";
1231
1232         memset(&states, 0, sizeof(states));
1233         get_remote_ref_states(remote, &states, GET_REF_STATES);
1234
1235         if (states.stale.nr) {
1236                 printf("Pruning %s\n", remote);
1237                 printf("URL: %s\n",
1238                        states.remote->url_nr
1239                        ? states.remote->url[0]
1240                        : "(no URL)");
1241         }
1242
1243         for (i = 0; i < states.stale.nr; i++) {
1244                 const char *refname = states.stale.items[i].util;
1245
1246                 if (!dry_run)
1247                         result |= delete_ref(refname, NULL, 0);
1248
1249                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1250                        abbrev_ref(refname, "refs/remotes/"));
1251                 warn_dangling_symref(stdout, dangling_msg, refname);
1252         }
1253
1254         free_remote_ref_states(&states);
1255         return result;
1256 }
1257
1258 static int get_remote_default(const char *key, const char *value, void *priv)
1259 {
1260         if (strcmp(key, "remotes.default") == 0) {
1261                 int *found = priv;
1262                 *found = 1;
1263         }
1264         return 0;
1265 }
1266
1267 static int update(int argc, const char **argv)
1268 {
1269         int i, prune = 0;
1270         struct option options[] = {
1271                 OPT_BOOLEAN('p', "prune", &prune,
1272                             "prune remotes after fetching"),
1273                 OPT_END()
1274         };
1275         const char **fetch_argv;
1276         int fetch_argc = 0;
1277         int default_defined = 0;
1278
1279         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1280
1281         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1282                              PARSE_OPT_KEEP_ARGV0);
1283
1284         fetch_argv[fetch_argc++] = "fetch";
1285
1286         if (prune)
1287                 fetch_argv[fetch_argc++] = "--prune";
1288         if (verbose)
1289                 fetch_argv[fetch_argc++] = "-v";
1290         fetch_argv[fetch_argc++] = "--multiple";
1291         if (argc < 2)
1292                 fetch_argv[fetch_argc++] = "default";
1293         for (i = 1; i < argc; i++)
1294                 fetch_argv[fetch_argc++] = argv[i];
1295
1296         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1297                 git_config(get_remote_default, &default_defined);
1298                 if (!default_defined)
1299                         fetch_argv[fetch_argc-1] = "--all";
1300         }
1301
1302         fetch_argv[fetch_argc] = NULL;
1303
1304         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1305 }
1306
1307 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1308 {
1309         return git_config_set_multivar(key, NULL, NULL, 1);
1310 }
1311
1312 static int add_branches(struct remote *remote, const char **branches,
1313                         const char *key)
1314 {
1315         const char *remotename = remote->name;
1316         int mirror = remote->mirror;
1317         struct strbuf refspec = STRBUF_INIT;
1318
1319         for (; *branches; branches++)
1320                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1321                         strbuf_release(&refspec);
1322                         return 1;
1323                 }
1324
1325         strbuf_release(&refspec);
1326         return 0;
1327 }
1328
1329 static int set_remote_branches(const char *remotename, const char **branches,
1330                                 int add_mode)
1331 {
1332         struct strbuf key = STRBUF_INIT;
1333         struct remote *remote;
1334
1335         strbuf_addf(&key, "remote.%s.fetch", remotename);
1336
1337         if (!remote_is_configured(remotename))
1338                 die("No such remote '%s'", remotename);
1339         remote = remote_get(remotename);
1340
1341         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1342                 strbuf_release(&key);
1343                 return 1;
1344         }
1345         if (add_branches(remote, branches, key.buf)) {
1346                 strbuf_release(&key);
1347                 return 1;
1348         }
1349
1350         strbuf_release(&key);
1351         return 0;
1352 }
1353
1354 static int set_branches(int argc, const char **argv)
1355 {
1356         int add_mode = 0;
1357         struct option options[] = {
1358                 OPT_BOOLEAN('\0', "add", &add_mode, "add branch"),
1359                 OPT_END()
1360         };
1361
1362         argc = parse_options(argc, argv, NULL, options,
1363                              builtin_remote_setbranches_usage, 0);
1364         if (argc == 0) {
1365                 error("no remote specified");
1366                 usage_with_options(builtin_remote_seturl_usage, options);
1367         }
1368         argv[argc] = NULL;
1369
1370         return set_remote_branches(argv[0], argv + 1, add_mode);
1371 }
1372
1373 static int set_url(int argc, const char **argv)
1374 {
1375         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1376         int matches = 0, negative_matches = 0;
1377         const char *remotename = NULL;
1378         const char *newurl = NULL;
1379         const char *oldurl = NULL;
1380         struct remote *remote;
1381         regex_t old_regex;
1382         const char **urlset;
1383         int urlset_nr;
1384         struct strbuf name_buf = STRBUF_INIT;
1385         struct option options[] = {
1386                 OPT_BOOLEAN('\0', "push", &push_mode,
1387                             "manipulate push URLs"),
1388                 OPT_BOOLEAN('\0', "add", &add_mode,
1389                             "add URL"),
1390                 OPT_BOOLEAN('\0', "delete", &delete_mode,
1391                             "delete URLs"),
1392                 OPT_END()
1393         };
1394         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1395                              PARSE_OPT_KEEP_ARGV0);
1396
1397         if (add_mode && delete_mode)
1398                 die("--add --delete doesn't make sense");
1399
1400         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1401                 usage_with_options(builtin_remote_seturl_usage, options);
1402
1403         remotename = argv[1];
1404         newurl = argv[2];
1405         if (argc > 3)
1406                 oldurl = argv[3];
1407
1408         if (delete_mode)
1409                 oldurl = newurl;
1410
1411         if (!remote_is_configured(remotename))
1412                 die("No such remote '%s'", remotename);
1413         remote = remote_get(remotename);
1414
1415         if (push_mode) {
1416                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1417                 urlset = remote->pushurl;
1418                 urlset_nr = remote->pushurl_nr;
1419         } else {
1420                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1421                 urlset = remote->url;
1422                 urlset_nr = remote->url_nr;
1423         }
1424
1425         /* Special cases that add new entry. */
1426         if ((!oldurl && !delete_mode) || add_mode) {
1427                 if (add_mode)
1428                         git_config_set_multivar(name_buf.buf, newurl,
1429                                 "^$", 0);
1430                 else
1431                         git_config_set(name_buf.buf, newurl);
1432                 strbuf_release(&name_buf);
1433                 return 0;
1434         }
1435
1436         /* Old URL specified. Demand that one matches. */
1437         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1438                 die("Invalid old URL pattern: %s", oldurl);
1439
1440         for (i = 0; i < urlset_nr; i++)
1441                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1442                         matches++;
1443                 else
1444                         negative_matches++;
1445         if (!delete_mode && !matches)
1446                 die("No such URL found: %s", oldurl);
1447         if (delete_mode && !negative_matches && !push_mode)
1448                 die("Will not delete all non-push URLs");
1449
1450         regfree(&old_regex);
1451
1452         if (!delete_mode)
1453                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1454         else
1455                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1456         return 0;
1457 }
1458
1459 static int get_one_entry(struct remote *remote, void *priv)
1460 {
1461         struct string_list *list = priv;
1462         struct strbuf url_buf = STRBUF_INIT;
1463         const char **url;
1464         int i, url_nr;
1465
1466         if (remote->url_nr > 0) {
1467                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1468                 string_list_append(list, remote->name)->util =
1469                                 strbuf_detach(&url_buf, NULL);
1470         } else
1471                 string_list_append(list, remote->name)->util = NULL;
1472         if (remote->pushurl_nr) {
1473                 url = remote->pushurl;
1474                 url_nr = remote->pushurl_nr;
1475         } else {
1476                 url = remote->url;
1477                 url_nr = remote->url_nr;
1478         }
1479         for (i = 0; i < url_nr; i++)
1480         {
1481                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1482                 string_list_append(list, remote->name)->util =
1483                                 strbuf_detach(&url_buf, NULL);
1484         }
1485
1486         return 0;
1487 }
1488
1489 static int show_all(void)
1490 {
1491         struct string_list list = STRING_LIST_INIT_NODUP;
1492         int result;
1493
1494         list.strdup_strings = 1;
1495         result = for_each_remote(get_one_entry, &list);
1496
1497         if (!result) {
1498                 int i;
1499
1500                 sort_string_list(&list);
1501                 for (i = 0; i < list.nr; i++) {
1502                         struct string_list_item *item = list.items + i;
1503                         if (verbose)
1504                                 printf("%s\t%s\n", item->string,
1505                                         item->util ? (const char *)item->util : "");
1506                         else {
1507                                 if (i && !strcmp((item - 1)->string, item->string))
1508                                         continue;
1509                                 printf("%s\n", item->string);
1510                         }
1511                 }
1512         }
1513         string_list_clear(&list, 1);
1514         return result;
1515 }
1516
1517 int cmd_remote(int argc, const char **argv, const char *prefix)
1518 {
1519         struct option options[] = {
1520                 OPT__VERBOSE(&verbose, "be verbose; must be placed before a subcommand"),
1521                 OPT_END()
1522         };
1523         int result;
1524
1525         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1526                 PARSE_OPT_STOP_AT_NON_OPTION);
1527
1528         if (argc < 1)
1529                 result = show_all();
1530         else if (!strcmp(argv[0], "add"))
1531                 result = add(argc, argv);
1532         else if (!strcmp(argv[0], "rename"))
1533                 result = mv(argc, argv);
1534         else if (!strcmp(argv[0], "rm"))
1535                 result = rm(argc, argv);
1536         else if (!strcmp(argv[0], "set-head"))
1537                 result = set_head(argc, argv);
1538         else if (!strcmp(argv[0], "set-branches"))
1539                 result = set_branches(argc, argv);
1540         else if (!strcmp(argv[0], "set-url"))
1541                 result = set_url(argc, argv);
1542         else if (!strcmp(argv[0], "show"))
1543                 result = show(argc, argv);
1544         else if (!strcmp(argv[0], "prune"))
1545                 result = prune(argc, argv);
1546         else if (!strcmp(argv[0], "update"))
1547                 result = update(argc, argv);
1548         else {
1549                 error("Unknown subcommand: %s", argv[0]);
1550                 usage_with_options(builtin_remote_usage, options);
1551         }
1552
1553         return result ? 1 : 0;
1554 }