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