git.oblomov.eu Git - git/blob - builtin/remote.c

   1 #include "builtin.h"
   2 #include "parse-options.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5 #include "string-list.h"
   6 #include "strbuf.h"
   7 #include "run-command.h"
   8 #include "refs.h"
   9 #include "argv-array.h"
  10
  11 static const char * const builtin_remote_usage[] = {
  12         N_("git remote [-v | --verbose]"),
  13         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  14         N_("git remote rename <old> <new>"),
  15         N_("git remote remove <name>"),
  16         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  17         N_("git remote [-v | --verbose] show [-n] <name>"),
  18         N_("git remote prune [-n | --dry-run] <name>"),
  19         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  20         N_("git remote set-branches [--add] <name> <branch>..."),
  21         N_("git remote get-url [--push] [--all] <name>"),
  22         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  23         N_("git remote set-url --add <name> <newurl>"),
  24         N_("git remote set-url --delete <name> <url>"),
  25         NULL
  26 };
  27
  28 static const char * const builtin_remote_add_usage[] = {
  29         N_("git remote add [<options>] <name> <url>"),
  30         NULL
  31 };
  32
  33 static const char * const builtin_remote_rename_usage[] = {
  34         N_("git remote rename <old> <new>"),
  35         NULL
  36 };
  37
  38 static const char * const builtin_remote_rm_usage[] = {
  39         N_("git remote remove <name>"),
  40         NULL
  41 };
  42
  43 static const char * const builtin_remote_sethead_usage[] = {
  44         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  45         NULL
  46 };
  47
  48 static const char * const builtin_remote_setbranches_usage[] = {
  49         N_("git remote set-branches <name> <branch>..."),
  50         N_("git remote set-branches --add <name> <branch>..."),
  51         NULL
  52 };
  53
  54 static const char * const builtin_remote_show_usage[] = {
  55         N_("git remote show [<options>] <name>"),
  56         NULL
  57 };
  58
  59 static const char * const builtin_remote_prune_usage[] = {
  60         N_("git remote prune [<options>] <name>"),
  61         NULL
  62 };
  63
  64 static const char * const builtin_remote_update_usage[] = {
  65         N_("git remote update [<options>] [<group> | <remote>]..."),
  66         NULL
  67 };
  68
  69 static const char * const builtin_remote_geturl_usage[] = {
  70         N_("git remote get-url [--push] [--all] <name>"),
  71         NULL
  72 };
  73
  74 static const char * const builtin_remote_seturl_usage[] = {
  75         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  76         N_("git remote set-url --add <name> <newurl>"),
  77         N_("git remote set-url --delete <name> <url>"),
  78         NULL
  79 };
  80
  81 #define GET_REF_STATES (1<<0)
  82 #define GET_HEAD_NAMES (1<<1)
  83 #define GET_PUSH_REF_STATES (1<<2)
  84
  85 static int verbose;
  86
  87 static int fetch_remote(const char *name)
  88 {
  89         const char *argv[] = { "fetch", name, NULL, NULL };
  90         if (verbose) {
  91                 argv[1] = "-v";
  92                 argv[2] = name;
  93         }
  94         printf_ln(_("Updating %s"), name);
  95         if (run_command_v_opt(argv, RUN_GIT_CMD))
  96                 return error(_("Could not fetch %s"), name);
  97         return 0;
  98 }
  99
 100 enum {
 101         TAGS_UNSET = 0,
 102         TAGS_DEFAULT = 1,
 103         TAGS_SET = 2
 104 };
 105
 106 #define MIRROR_NONE 0
 107 #define MIRROR_FETCH 1
 108 #define MIRROR_PUSH 2
 109 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 110
 111 static int add_branch(const char *key, const char *branchname,
 112                 const char *remotename, int mirror, struct strbuf *tmp)
 113 {
 114         strbuf_reset(tmp);
 115         strbuf_addch(tmp, '+');
 116         if (mirror)
 117                 strbuf_addf(tmp, "refs/%s:refs/%s",
 118                                 branchname, branchname);
 119         else
 120                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 121                                 branchname, remotename, branchname);
 122         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 123 }
 124
 125 static const char mirror_advice[] =
 126 N_("--mirror is dangerous and deprecated; please\n"
 127    "\t use --mirror=fetch or --mirror=push instead");
 128
 129 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 130 {
 131         unsigned *mirror = opt->value;
 132         if (not)
 133                 *mirror = MIRROR_NONE;
 134         else if (!arg) {
 135                 warning("%s", _(mirror_advice));
 136                 *mirror = MIRROR_BOTH;
 137         }
 138         else if (!strcmp(arg, "fetch"))
 139                 *mirror = MIRROR_FETCH;
 140         else if (!strcmp(arg, "push"))
 141                 *mirror = MIRROR_PUSH;
 142         else
 143                 return error(_("unknown mirror argument: %s"), arg);
 144         return 0;
 145 }
 146
 147 static int add(int argc, const char **argv)
 148 {
 149         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 150         unsigned mirror = MIRROR_NONE;
 151         struct string_list track = STRING_LIST_INIT_NODUP;
 152         const char *master = NULL;
 153         struct remote *remote;
 154         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 155         const char *name, *url;
 156         int i;
 157
 158         struct option options[] = {
 159                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 160                 OPT_SET_INT(0, "tags", &fetch_tags,
 161                             N_("import all tags and associated objects when fetching"),
 162                             TAGS_SET),
 163                 OPT_SET_INT(0, NULL, &fetch_tags,
 164                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 165                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 166                                 N_("branch(es) to track")),
 167                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 168                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 169                         N_("set up remote as a mirror to push to or fetch from"),
 170                         PARSE_OPT_OPTARG, parse_mirror_opt },
 171                 OPT_END()
 172         };
 173
 174         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 175                              0);
 176
 177         if (argc != 2)
 178                 usage_with_options(builtin_remote_add_usage, options);
 179
 180         if (mirror && master)
 181                 die(_("specifying a master branch makes no sense with --mirror"));
 182         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 183                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 184
 185         name = argv[0];
 186         url = argv[1];
 187
 188         remote = remote_get(name);
 189         if (remote && (remote->url_nr > 1 ||
 190                         (strcmp(name, remote->url[0]) &&
 191                                 strcmp(url, remote->url[0])) ||
 192                         remote->fetch_refspec_nr))
 193                 die(_("remote %s already exists."), name);
 194
 195         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 196         if (!valid_fetch_refspec(buf2.buf))
 197                 die(_("'%s' is not a valid remote name"), name);
 198
 199         strbuf_addf(&buf, "remote.%s.url", name);
 200         if (git_config_set(buf.buf, url))
 201                 return 1;
 202
 203         if (!mirror || mirror & MIRROR_FETCH) {
 204                 strbuf_reset(&buf);
 205                 strbuf_addf(&buf, "remote.%s.fetch", name);
 206                 if (track.nr == 0)
 207                         string_list_append(&track, "*");
 208                 for (i = 0; i < track.nr; i++) {
 209                         if (add_branch(buf.buf, track.items[i].string,
 210                                        name, mirror, &buf2))
 211                                 return 1;
 212                 }
 213         }
 214
 215         if (mirror & MIRROR_PUSH) {
 216                 strbuf_reset(&buf);
 217                 strbuf_addf(&buf, "remote.%s.mirror", name);
 218                 if (git_config_set(buf.buf, "true"))
 219                         return 1;
 220         }
 221
 222         if (fetch_tags != TAGS_DEFAULT) {
 223                 strbuf_reset(&buf);
 224                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 225                 if (git_config_set(buf.buf,
 226                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 227                         return 1;
 228         }
 229
 230         if (fetch && fetch_remote(name))
 231                 return 1;
 232
 233         if (master) {
 234                 strbuf_reset(&buf);
 235                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 236
 237                 strbuf_reset(&buf2);
 238                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 239
 240                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 241                         return error(_("Could not setup master '%s'"), master);
 242         }
 243
 244         strbuf_release(&buf);
 245         strbuf_release(&buf2);
 246         string_list_clear(&track, 0);
 247
 248         return 0;
 249 }
 250
 251 struct branch_info {
 252         char *remote_name;
 253         struct string_list merge;
 254         enum { NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE } rebase;
 255 };
 256
 257 static struct string_list branch_list;
 258
 259 static const char *abbrev_ref(const char *name, const char *prefix)
 260 {
 261         skip_prefix(name, prefix, &name);
 262         return name;
 263 }
 264 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 265
 266 static int config_read_branches(const char *key, const char *value, void *cb)
 267 {
 268         if (starts_with(key, "branch.")) {
 269                 const char *orig_key = key;
 270                 char *name;
 271                 struct string_list_item *item;
 272                 struct branch_info *info;
 273                 enum { REMOTE, MERGE, REBASE } type;
 274                 size_t key_len;
 275
 276                 key += 7;
 277                 if (strip_suffix(key, ".remote", &key_len)) {
 278                         name = xmemdupz(key, key_len);
 279                         type = REMOTE;
 280                 } else if (strip_suffix(key, ".merge", &key_len)) {
 281                         name = xmemdupz(key, key_len);
 282                         type = MERGE;
 283                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 284                         name = xmemdupz(key, key_len);
 285                         type = REBASE;
 286                 } else
 287                         return 0;
 288
 289                 item = string_list_insert(&branch_list, name);
 290
 291                 if (!item->util)
 292                         item->util = xcalloc(1, sizeof(struct branch_info));
 293                 info = item->util;
 294                 if (type == REMOTE) {
 295                         if (info->remote_name)
 296                                 warning(_("more than one %s"), orig_key);
 297                         info->remote_name = xstrdup(value);
 298                 } else if (type == MERGE) {
 299                         char *space = strchr(value, ' ');
 300                         value = abbrev_branch(value);
 301                         while (space) {
 302                                 char *merge;
 303                                 merge = xstrndup(value, space - value);
 304                                 string_list_append(&info->merge, merge);
 305                                 value = abbrev_branch(space + 1);
 306                                 space = strchr(value, ' ');
 307                         }
 308                         string_list_append(&info->merge, xstrdup(value));
 309                 } else {
 310                         int v = git_config_maybe_bool(orig_key, value);
 311                         if (v >= 0)
 312                                 info->rebase = v;
 313                         else if (!strcmp(value, "preserve"))
 314                                 info->rebase = NORMAL_REBASE;
 315                         else if (!strcmp(value, "interactive"))
 316                                 info->rebase = INTERACTIVE_REBASE;
 317                 }
 318         }
 319         return 0;
 320 }
 321
 322 static void read_branches(void)
 323 {
 324         if (branch_list.nr)
 325                 return;
 326         git_config(config_read_branches, NULL);
 327 }
 328
 329 struct ref_states {
 330         struct remote *remote;
 331         struct string_list new, stale, tracked, heads, push;
 332         int queried;
 333 };
 334
 335 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 336 {
 337         struct ref *fetch_map = NULL, **tail = &fetch_map;
 338         struct ref *ref, *stale_refs;
 339         int i;
 340
 341         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 342                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 343                         die(_("Could not get fetch map for refspec %s"),
 344                                 states->remote->fetch_refspec[i]);
 345
 346         states->new.strdup_strings = 1;
 347         states->tracked.strdup_strings = 1;
 348         states->stale.strdup_strings = 1;
 349         for (ref = fetch_map; ref; ref = ref->next) {
 350                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 351                         string_list_append(&states->new, abbrev_branch(ref->name));
 352                 else
 353                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 354         }
 355         stale_refs = get_stale_heads(states->remote->fetch,
 356                                      states->remote->fetch_refspec_nr, fetch_map);
 357         for (ref = stale_refs; ref; ref = ref->next) {
 358                 struct string_list_item *item =
 359                         string_list_append(&states->stale, abbrev_branch(ref->name));
 360                 item->util = xstrdup(ref->name);
 361         }
 362         free_refs(stale_refs);
 363         free_refs(fetch_map);
 364
 365         string_list_sort(&states->new);
 366         string_list_sort(&states->tracked);
 367         string_list_sort(&states->stale);
 368
 369         return 0;
 370 }
 371
 372 struct push_info {
 373         char *dest;
 374         int forced;
 375         enum {
 376                 PUSH_STATUS_CREATE = 0,
 377                 PUSH_STATUS_DELETE,
 378                 PUSH_STATUS_UPTODATE,
 379                 PUSH_STATUS_FASTFORWARD,
 380                 PUSH_STATUS_OUTOFDATE,
 381                 PUSH_STATUS_NOTQUERIED
 382         } status;
 383 };
 384
 385 static int get_push_ref_states(const struct ref *remote_refs,
 386         struct ref_states *states)
 387 {
 388         struct remote *remote = states->remote;
 389         struct ref *ref, *local_refs, *push_map;
 390         if (remote->mirror)
 391                 return 0;
 392
 393         local_refs = get_local_heads();
 394         push_map = copy_ref_list(remote_refs);
 395
 396         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 397                         remote->push_refspec, MATCH_REFS_NONE);
 398
 399         states->push.strdup_strings = 1;
 400         for (ref = push_map; ref; ref = ref->next) {
 401                 struct string_list_item *item;
 402                 struct push_info *info;
 403
 404                 if (!ref->peer_ref)
 405                         continue;
 406                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 407
 408                 item = string_list_append(&states->push,
 409                                           abbrev_branch(ref->peer_ref->name));
 410                 item->util = xcalloc(1, sizeof(struct push_info));
 411                 info = item->util;
 412                 info->forced = ref->force;
 413                 info->dest = xstrdup(abbrev_branch(ref->name));
 414
 415                 if (is_null_oid(&ref->new_oid)) {
 416                         info->status = PUSH_STATUS_DELETE;
 417                 } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
 418                         info->status = PUSH_STATUS_UPTODATE;
 419                 else if (is_null_oid(&ref->old_oid))
 420                         info->status = PUSH_STATUS_CREATE;
 421                 else if (has_object_file(&ref->old_oid) &&
 422                          ref_newer(&ref->new_oid, &ref->old_oid))
 423                         info->status = PUSH_STATUS_FASTFORWARD;
 424                 else
 425                         info->status = PUSH_STATUS_OUTOFDATE;
 426         }
 427         free_refs(local_refs);
 428         free_refs(push_map);
 429         return 0;
 430 }
 431
 432 static int get_push_ref_states_noquery(struct ref_states *states)
 433 {
 434         int i;
 435         struct remote *remote = states->remote;
 436         struct string_list_item *item;
 437         struct push_info *info;
 438
 439         if (remote->mirror)
 440                 return 0;
 441
 442         states->push.strdup_strings = 1;
 443         if (!remote->push_refspec_nr) {
 444                 item = string_list_append(&states->push, _("(matching)"));
 445                 info = item->util = xcalloc(1, sizeof(struct push_info));
 446                 info->status = PUSH_STATUS_NOTQUERIED;
 447                 info->dest = xstrdup(item->string);
 448         }
 449         for (i = 0; i < remote->push_refspec_nr; i++) {
 450                 struct refspec *spec = remote->push + i;
 451                 if (spec->matching)
 452                         item = string_list_append(&states->push, _("(matching)"));
 453                 else if (strlen(spec->src))
 454                         item = string_list_append(&states->push, spec->src);
 455                 else
 456                         item = string_list_append(&states->push, _("(delete)"));
 457
 458                 info = item->util = xcalloc(1, sizeof(struct push_info));
 459                 info->forced = spec->force;
 460                 info->status = PUSH_STATUS_NOTQUERIED;
 461                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 462         }
 463         return 0;
 464 }
 465
 466 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 467 {
 468         struct ref *ref, *matches;
 469         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 470         struct refspec refspec;
 471
 472         refspec.force = 0;
 473         refspec.pattern = 1;
 474         refspec.src = refspec.dst = "refs/heads/*";
 475         states->heads.strdup_strings = 1;
 476         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 477         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 478                                     fetch_map, 1);
 479         for (ref = matches; ref; ref = ref->next)
 480                 string_list_append(&states->heads, abbrev_branch(ref->name));
 481
 482         free_refs(fetch_map);
 483         free_refs(matches);
 484
 485         return 0;
 486 }
 487
 488 struct known_remote {
 489         struct known_remote *next;
 490         struct remote *remote;
 491 };
 492
 493 struct known_remotes {
 494         struct remote *to_delete;
 495         struct known_remote *list;
 496 };
 497
 498 static int add_known_remote(struct remote *remote, void *cb_data)
 499 {
 500         struct known_remotes *all = cb_data;
 501         struct known_remote *r;
 502
 503         if (!strcmp(all->to_delete->name, remote->name))
 504                 return 0;
 505
 506         r = xmalloc(sizeof(*r));
 507         r->remote = remote;
 508         r->next = all->list;
 509         all->list = r;
 510         return 0;
 511 }
 512
 513 struct branches_for_remote {
 514         struct remote *remote;
 515         struct string_list *branches, *skipped;
 516         struct known_remotes *keep;
 517 };
 518
 519 static int add_branch_for_removal(const char *refname,
 520         const struct object_id *oid, int flags, void *cb_data)
 521 {
 522         struct branches_for_remote *branches = cb_data;
 523         struct refspec refspec;
 524         struct known_remote *kr;
 525
 526         memset(&refspec, 0, sizeof(refspec));
 527         refspec.dst = (char *)refname;
 528         if (remote_find_tracking(branches->remote, &refspec))
 529                 return 0;
 530
 531         /* don't delete a branch if another remote also uses it */
 532         for (kr = branches->keep->list; kr; kr = kr->next) {
 533                 memset(&refspec, 0, sizeof(refspec));
 534                 refspec.dst = (char *)refname;
 535                 if (!remote_find_tracking(kr->remote, &refspec))
 536                         return 0;
 537         }
 538
 539         /* don't delete non-remote-tracking refs */
 540         if (!starts_with(refname, "refs/remotes/")) {
 541                 /* advise user how to delete local branches */
 542                 if (starts_with(refname, "refs/heads/"))
 543                         string_list_append(branches->skipped,
 544                                            abbrev_branch(refname));
 545                 /* silently skip over other non-remote refs */
 546                 return 0;
 547         }
 548
 549         /* make sure that symrefs are deleted */
 550         if (flags & REF_ISSYMREF)
 551                 return unlink(git_path("%s", refname));
 552
 553         string_list_append(branches->branches, refname);
 554
 555         return 0;
 556 }
 557
 558 struct rename_info {
 559         const char *old;
 560         const char *new;
 561         struct string_list *remote_branches;
 562 };
 563
 564 static int read_remote_branches(const char *refname,
 565         const struct object_id *oid, int flags, void *cb_data)
 566 {
 567         struct rename_info *rename = cb_data;
 568         struct strbuf buf = STRBUF_INIT;
 569         struct string_list_item *item;
 570         int flag;
 571         struct object_id orig_oid;
 572         const char *symref;
 573
 574         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 575         if (starts_with(refname, buf.buf)) {
 576                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 577                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 578                                             orig_oid.hash, &flag);
 579                 if (flag & REF_ISSYMREF)
 580                         item->util = xstrdup(symref);
 581                 else
 582                         item->util = NULL;
 583         }
 584
 585         return 0;
 586 }
 587
 588 static int migrate_file(struct remote *remote)
 589 {
 590         struct strbuf buf = STRBUF_INIT;
 591         int i;
 592
 593         strbuf_addf(&buf, "remote.%s.url", remote->name);
 594         for (i = 0; i < remote->url_nr; i++)
 595                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 596                         return error(_("Could not append '%s' to '%s'"),
 597                                         remote->url[i], buf.buf);
 598         strbuf_reset(&buf);
 599         strbuf_addf(&buf, "remote.%s.push", remote->name);
 600         for (i = 0; i < remote->push_refspec_nr; i++)
 601                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 602                         return error(_("Could not append '%s' to '%s'"),
 603                                         remote->push_refspec[i], buf.buf);
 604         strbuf_reset(&buf);
 605         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 606         for (i = 0; i < remote->fetch_refspec_nr; i++)
 607                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 608                         return error(_("Could not append '%s' to '%s'"),
 609                                         remote->fetch_refspec[i], buf.buf);
 610         if (remote->origin == REMOTE_REMOTES)
 611                 unlink_or_warn(git_path("remotes/%s", remote->name));
 612         else if (remote->origin == REMOTE_BRANCHES)
 613                 unlink_or_warn(git_path("branches/%s", remote->name));
 614         return 0;
 615 }
 616
 617 static int mv(int argc, const char **argv)
 618 {
 619         struct option options[] = {
 620                 OPT_END()
 621         };
 622         struct remote *oldremote, *newremote;
 623         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 624                 old_remote_context = STRBUF_INIT;
 625         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 626         struct rename_info rename;
 627         int i, refspec_updated = 0;
 628
 629         if (argc != 3)
 630                 usage_with_options(builtin_remote_rename_usage, options);
 631
 632         rename.old = argv[1];
 633         rename.new = argv[2];
 634         rename.remote_branches = &remote_branches;
 635
 636         oldremote = remote_get(rename.old);
 637         if (!remote_is_configured(oldremote))
 638                 die(_("No such remote: %s"), rename.old);
 639
 640         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 641                 return migrate_file(oldremote);
 642
 643         newremote = remote_get(rename.new);
 644         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 645                 die(_("remote %s already exists."), rename.new);
 646
 647         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 648         if (!valid_fetch_refspec(buf.buf))
 649                 die(_("'%s' is not a valid remote name"), rename.new);
 650
 651         strbuf_reset(&buf);
 652         strbuf_addf(&buf, "remote.%s", rename.old);
 653         strbuf_addf(&buf2, "remote.%s", rename.new);
 654         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 655                 return error(_("Could not rename config section '%s' to '%s'"),
 656                                 buf.buf, buf2.buf);
 657
 658         strbuf_reset(&buf);
 659         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 660         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 661                 return error(_("Could not remove config section '%s'"), buf.buf);
 662         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 663         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 664                 char *ptr;
 665
 666                 strbuf_reset(&buf2);
 667                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 668                 ptr = strstr(buf2.buf, old_remote_context.buf);
 669                 if (ptr) {
 670                         refspec_updated = 1;
 671                         strbuf_splice(&buf2,
 672                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 673                                       strlen(rename.old), rename.new,
 674                                       strlen(rename.new));
 675                 } else
 676                         warning(_("Not updating non-default fetch refspec\n"
 677                                   "\t%s\n"
 678                                   "\tPlease update the configuration manually if necessary."),
 679                                 buf2.buf);
 680
 681                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 682                         return error(_("Could not append '%s'"), buf.buf);
 683         }
 684
 685         read_branches();
 686         for (i = 0; i < branch_list.nr; i++) {
 687                 struct string_list_item *item = branch_list.items + i;
 688                 struct branch_info *info = item->util;
 689                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 690                         strbuf_reset(&buf);
 691                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 692                         if (git_config_set(buf.buf, rename.new)) {
 693                                 return error(_("Could not set '%s'"), buf.buf);
 694                         }
 695                 }
 696         }
 697
 698         if (!refspec_updated)
 699                 return 0;
 700
 701         /*
 702          * First remove symrefs, then rename the rest, finally create
 703          * the new symrefs.
 704          */
 705         for_each_ref(read_remote_branches, &rename);
 706         for (i = 0; i < remote_branches.nr; i++) {
 707                 struct string_list_item *item = remote_branches.items + i;
 708                 int flag = 0;
 709                 struct object_id oid;
 710
 711                 read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 712                 if (!(flag & REF_ISSYMREF))
 713                         continue;
 714                 if (delete_ref(item->string, NULL, REF_NODEREF))
 715                         die(_("deleting '%s' failed"), item->string);
 716         }
 717         for (i = 0; i < remote_branches.nr; i++) {
 718                 struct string_list_item *item = remote_branches.items + i;
 719
 720                 if (item->util)
 721                         continue;
 722                 strbuf_reset(&buf);
 723                 strbuf_addstr(&buf, item->string);
 724                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 725                                 rename.new, strlen(rename.new));
 726                 strbuf_reset(&buf2);
 727                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 728                                 item->string, buf.buf);
 729                 if (rename_ref(item->string, buf.buf, buf2.buf))
 730                         die(_("renaming '%s' failed"), item->string);
 731         }
 732         for (i = 0; i < remote_branches.nr; i++) {
 733                 struct string_list_item *item = remote_branches.items + i;
 734
 735                 if (!item->util)
 736                         continue;
 737                 strbuf_reset(&buf);
 738                 strbuf_addstr(&buf, item->string);
 739                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 740                                 rename.new, strlen(rename.new));
 741                 strbuf_reset(&buf2);
 742                 strbuf_addstr(&buf2, item->util);
 743                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 744                                 rename.new, strlen(rename.new));
 745                 strbuf_reset(&buf3);
 746                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 747                                 item->string, buf.buf);
 748                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 749                         die(_("creating '%s' failed"), buf.buf);
 750         }
 751         return 0;
 752 }
 753
 754 static int rm(int argc, const char **argv)
 755 {
 756         struct option options[] = {
 757                 OPT_END()
 758         };
 759         struct remote *remote;
 760         struct strbuf buf = STRBUF_INIT;
 761         struct known_remotes known_remotes = { NULL, NULL };
 762         struct string_list branches = STRING_LIST_INIT_DUP;
 763         struct string_list skipped = STRING_LIST_INIT_DUP;
 764         struct branches_for_remote cb_data;
 765         int i, result;
 766
 767         memset(&cb_data, 0, sizeof(cb_data));
 768         cb_data.branches = &branches;
 769         cb_data.skipped = &skipped;
 770         cb_data.keep = &known_remotes;
 771
 772         if (argc != 2)
 773                 usage_with_options(builtin_remote_rm_usage, options);
 774
 775         remote = remote_get(argv[1]);
 776         if (!remote_is_configured(remote))
 777                 die(_("No such remote: %s"), argv[1]);
 778
 779         known_remotes.to_delete = remote;
 780         for_each_remote(add_known_remote, &known_remotes);
 781
 782         read_branches();
 783         for (i = 0; i < branch_list.nr; i++) {
 784                 struct string_list_item *item = branch_list.items + i;
 785                 struct branch_info *info = item->util;
 786                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 787                         const char *keys[] = { "remote", "merge", NULL }, **k;
 788                         for (k = keys; *k; k++) {
 789                                 strbuf_reset(&buf);
 790                                 strbuf_addf(&buf, "branch.%s.%s",
 791                                                 item->string, *k);
 792                                 if (git_config_set(buf.buf, NULL)) {
 793                                         strbuf_release(&buf);
 794                                         return -1;
 795                                 }
 796                         }
 797                 }
 798         }
 799
 800         /*
 801          * We cannot just pass a function to for_each_ref() which deletes
 802          * the branches one by one, since for_each_ref() relies on cached
 803          * refs, which are invalidated when deleting a branch.
 804          */
 805         cb_data.remote = remote;
 806         result = for_each_ref(add_branch_for_removal, &cb_data);
 807         strbuf_release(&buf);
 808
 809         if (!result)
 810                 result = delete_refs(&branches);
 811         string_list_clear(&branches, 0);
 812
 813         if (skipped.nr) {
 814                 fprintf_ln(stderr,
 815                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 816                               "to delete it, use:",
 817                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 818                               "to delete them, use:",
 819                               skipped.nr));
 820                 for (i = 0; i < skipped.nr; i++)
 821                         fprintf(stderr, "  git branch -d %s\n",
 822                                 skipped.items[i].string);
 823         }
 824         string_list_clear(&skipped, 0);
 825
 826         if (!result) {
 827                 strbuf_addf(&buf, "remote.%s", remote->name);
 828                 if (git_config_rename_section(buf.buf, NULL) < 1)
 829                         return error(_("Could not remove config section '%s'"), buf.buf);
 830         }
 831
 832         return result;
 833 }
 834
 835 static void clear_push_info(void *util, const char *string)
 836 {
 837         struct push_info *info = util;
 838         free(info->dest);
 839         free(info);
 840 }
 841
 842 static void free_remote_ref_states(struct ref_states *states)
 843 {
 844         string_list_clear(&states->new, 0);
 845         string_list_clear(&states->stale, 1);
 846         string_list_clear(&states->tracked, 0);
 847         string_list_clear(&states->heads, 0);
 848         string_list_clear_func(&states->push, clear_push_info);
 849 }
 850
 851 static int append_ref_to_tracked_list(const char *refname,
 852         const struct object_id *oid, int flags, void *cb_data)
 853 {
 854         struct ref_states *states = cb_data;
 855         struct refspec refspec;
 856
 857         if (flags & REF_ISSYMREF)
 858                 return 0;
 859
 860         memset(&refspec, 0, sizeof(refspec));
 861         refspec.dst = (char *)refname;
 862         if (!remote_find_tracking(states->remote, &refspec))
 863                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 864
 865         return 0;
 866 }
 867
 868 static int get_remote_ref_states(const char *name,
 869                                  struct ref_states *states,
 870                                  int query)
 871 {
 872         struct transport *transport;
 873         const struct ref *remote_refs;
 874
 875         states->remote = remote_get(name);
 876         if (!states->remote)
 877                 return error(_("No such remote: %s"), name);
 878
 879         read_branches();
 880
 881         if (query) {
 882                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 883                         states->remote->url[0] : NULL);
 884                 remote_refs = transport_get_remote_refs(transport);
 885                 transport_disconnect(transport);
 886
 887                 states->queried = 1;
 888                 if (query & GET_REF_STATES)
 889                         get_ref_states(remote_refs, states);
 890                 if (query & GET_HEAD_NAMES)
 891                         get_head_names(remote_refs, states);
 892                 if (query & GET_PUSH_REF_STATES)
 893                         get_push_ref_states(remote_refs, states);
 894         } else {
 895                 for_each_ref(append_ref_to_tracked_list, states);
 896                 string_list_sort(&states->tracked);
 897                 get_push_ref_states_noquery(states);
 898         }
 899
 900         return 0;
 901 }
 902
 903 struct show_info {
 904         struct string_list *list;
 905         struct ref_states *states;
 906         int width, width2;
 907         int any_rebase;
 908 };
 909
 910 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 911 {
 912         struct show_info *info = cb_data;
 913         int n = strlen(item->string);
 914         if (n > info->width)
 915                 info->width = n;
 916         string_list_insert(info->list, item->string);
 917         return 0;
 918 }
 919
 920 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 921 {
 922         struct show_info *info = cb_data;
 923         struct ref_states *states = info->states;
 924         const char *name = item->string;
 925
 926         if (states->queried) {
 927                 const char *fmt = "%s";
 928                 const char *arg = "";
 929                 if (string_list_has_string(&states->new, name)) {
 930                         fmt = _(" new (next fetch will store in remotes/%s)");
 931                         arg = states->remote->name;
 932                 } else if (string_list_has_string(&states->tracked, name))
 933                         arg = _(" tracked");
 934                 else if (string_list_has_string(&states->stale, name))
 935                         arg = _(" stale (use 'git remote prune' to remove)");
 936                 else
 937                         arg = _(" ???");
 938                 printf("    %-*s", info->width, name);
 939                 printf(fmt, arg);
 940                 printf("\n");
 941         } else
 942                 printf("    %s\n", name);
 943
 944         return 0;
 945 }
 946
 947 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 948 {
 949         struct show_info *show_info = cb_data;
 950         struct ref_states *states = show_info->states;
 951         struct branch_info *branch_info = branch_item->util;
 952         struct string_list_item *item;
 953         int n;
 954
 955         if (!branch_info->merge.nr || !branch_info->remote_name ||
 956             strcmp(states->remote->name, branch_info->remote_name))
 957                 return 0;
 958         if ((n = strlen(branch_item->string)) > show_info->width)
 959                 show_info->width = n;
 960         if (branch_info->rebase)
 961                 show_info->any_rebase = 1;
 962
 963         item = string_list_insert(show_info->list, branch_item->string);
 964         item->util = branch_info;
 965
 966         return 0;
 967 }
 968
 969 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 970 {
 971         struct show_info *show_info = cb_data;
 972         struct branch_info *branch_info = item->util;
 973         struct string_list *merge = &branch_info->merge;
 974         const char *also;
 975         int i;
 976
 977         if (branch_info->rebase && branch_info->merge.nr > 1) {
 978                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 979                         item->string);
 980                 return 0;
 981         }
 982
 983         printf("    %-*s ", show_info->width, item->string);
 984         if (branch_info->rebase) {
 985                 printf_ln(_(branch_info->rebase == INTERACTIVE_REBASE ?
 986                         "rebases interactively onto remote %s" :
 987                         "rebases onto remote %s"), merge->items[0].string);
 988                 return 0;
 989         } else if (show_info->any_rebase) {
 990                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 991                 also = _("    and with remote");
 992         } else {
 993                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 994                 also = _("   and with remote");
 995         }
 996         for (i = 1; i < merge->nr; i++)
 997                 printf("    %-*s %s %s\n", show_info->width, "", also,
 998                        merge->items[i].string);
 999
1000         return 0;
1001 }
1002
1003 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1004 {
1005         struct show_info *show_info = cb_data;
1006         struct push_info *push_info = push_item->util;
1007         struct string_list_item *item;
1008         int n;
1009         if ((n = strlen(push_item->string)) > show_info->width)
1010                 show_info->width = n;
1011         if ((n = strlen(push_info->dest)) > show_info->width2)
1012                 show_info->width2 = n;
1013         item = string_list_append(show_info->list, push_item->string);
1014         item->util = push_item->util;
1015         return 0;
1016 }
1017
1018 /*
1019  * Sorting comparison for a string list that has push_info
1020  * structs in its util field
1021  */
1022 static int cmp_string_with_push(const void *va, const void *vb)
1023 {
1024         const struct string_list_item *a = va;
1025         const struct string_list_item *b = vb;
1026         const struct push_info *a_push = a->util;
1027         const struct push_info *b_push = b->util;
1028         int cmp = strcmp(a->string, b->string);
1029         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1030 }
1031
1032 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1033 {
1034         struct show_info *show_info = cb_data;
1035         struct push_info *push_info = item->util;
1036         const char *src = item->string, *status = NULL;
1037
1038         switch (push_info->status) {
1039         case PUSH_STATUS_CREATE:
1040                 status = _("create");
1041                 break;
1042         case PUSH_STATUS_DELETE:
1043                 status = _("delete");
1044                 src = _("(none)");
1045                 break;
1046         case PUSH_STATUS_UPTODATE:
1047                 status = _("up to date");
1048                 break;
1049         case PUSH_STATUS_FASTFORWARD:
1050                 status = _("fast-forwardable");
1051                 break;
1052         case PUSH_STATUS_OUTOFDATE:
1053                 status = _("local out of date");
1054                 break;
1055         case PUSH_STATUS_NOTQUERIED:
1056                 break;
1057         }
1058         if (status) {
1059                 if (push_info->forced)
1060                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1061                                show_info->width2, push_info->dest, status);
1062                 else
1063                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1064                                show_info->width2, push_info->dest, status);
1065         } else {
1066                 if (push_info->forced)
1067                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1068                                push_info->dest);
1069                 else
1070                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1071                                push_info->dest);
1072         }
1073         return 0;
1074 }
1075
1076 static int get_one_entry(struct remote *remote, void *priv)
1077 {
1078         struct string_list *list = priv;
1079         struct strbuf url_buf = STRBUF_INIT;
1080         const char **url;
1081         int i, url_nr;
1082
1083         if (remote->url_nr > 0) {
1084                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1085                 string_list_append(list, remote->name)->util =
1086                                 strbuf_detach(&url_buf, NULL);
1087         } else
1088                 string_list_append(list, remote->name)->util = NULL;
1089         if (remote->pushurl_nr) {
1090                 url = remote->pushurl;
1091                 url_nr = remote->pushurl_nr;
1092         } else {
1093                 url = remote->url;
1094                 url_nr = remote->url_nr;
1095         }
1096         for (i = 0; i < url_nr; i++)
1097         {
1098                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1099                 string_list_append(list, remote->name)->util =
1100                                 strbuf_detach(&url_buf, NULL);
1101         }
1102
1103         return 0;
1104 }
1105
1106 static int show_all(void)
1107 {
1108         struct string_list list = STRING_LIST_INIT_NODUP;
1109         int result;
1110
1111         list.strdup_strings = 1;
1112         result = for_each_remote(get_one_entry, &list);
1113
1114         if (!result) {
1115                 int i;
1116
1117                 string_list_sort(&list);
1118                 for (i = 0; i < list.nr; i++) {
1119                         struct string_list_item *item = list.items + i;
1120                         if (verbose)
1121                                 printf("%s\t%s\n", item->string,
1122                                         item->util ? (const char *)item->util : "");
1123                         else {
1124                                 if (i && !strcmp((item - 1)->string, item->string))
1125                                         continue;
1126                                 printf("%s\n", item->string);
1127                         }
1128                 }
1129         }
1130         string_list_clear(&list, 1);
1131         return result;
1132 }
1133
1134 static int show(int argc, const char **argv)
1135 {
1136         int no_query = 0, result = 0, query_flag = 0;
1137         struct option options[] = {
1138                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1139                 OPT_END()
1140         };
1141         struct ref_states states;
1142         struct string_list info_list = STRING_LIST_INIT_NODUP;
1143         struct show_info info;
1144
1145         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1146                              0);
1147
1148         if (argc < 1)
1149                 return show_all();
1150
1151         if (!no_query)
1152                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1153
1154         memset(&states, 0, sizeof(states));
1155         memset(&info, 0, sizeof(info));
1156         info.states = &states;
1157         info.list = &info_list;
1158         for (; argc; argc--, argv++) {
1159                 int i;
1160                 const char **url;
1161                 int url_nr;
1162
1163                 get_remote_ref_states(*argv, &states, query_flag);
1164
1165                 printf_ln(_("* remote %s"), *argv);
1166                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1167                        states.remote->url[0] : _("(no URL)"));
1168                 if (states.remote->pushurl_nr) {
1169                         url = states.remote->pushurl;
1170                         url_nr = states.remote->pushurl_nr;
1171                 } else {
1172                         url = states.remote->url;
1173                         url_nr = states.remote->url_nr;
1174                 }
1175                 for (i = 0; i < url_nr; i++)
1176                         printf_ln(_("  Push  URL: %s"), url[i]);
1177                 if (!i)
1178                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1179                 if (no_query)
1180                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1181                 else if (!states.heads.nr)
1182                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1183                 else if (states.heads.nr == 1)
1184                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1185                 else {
1186                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1187                                  " may be one of the following):\n"));
1188                         for (i = 0; i < states.heads.nr; i++)
1189                                 printf("    %s\n", states.heads.items[i].string);
1190                 }
1191
1192                 /* remote branch info */
1193                 info.width = 0;
1194                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1195                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1196                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1197                 if (info.list->nr)
1198                         printf_ln(Q_("  Remote branch:%s",
1199                                      "  Remote branches:%s",
1200                                      info.list->nr),
1201                                   no_query ? _(" (status not queried)") : "");
1202                 for_each_string_list(info.list, show_remote_info_item, &info);
1203                 string_list_clear(info.list, 0);
1204
1205                 /* git pull info */
1206                 info.width = 0;
1207                 info.any_rebase = 0;
1208                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1209                 if (info.list->nr)
1210                         printf_ln(Q_("  Local branch configured for 'git pull':",
1211                                      "  Local branches configured for 'git pull':",
1212                                      info.list->nr));
1213                 for_each_string_list(info.list, show_local_info_item, &info);
1214                 string_list_clear(info.list, 0);
1215
1216                 /* git push info */
1217                 if (states.remote->mirror)
1218                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1219
1220                 info.width = info.width2 = 0;
1221                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1222                 qsort(info.list->items, info.list->nr,
1223                         sizeof(*info.list->items), cmp_string_with_push);
1224                 if (info.list->nr)
1225                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1226                                      "  Local refs configured for 'git push'%s:",
1227                                      info.list->nr),
1228                                   no_query ? _(" (status not queried)") : "");
1229                 for_each_string_list(info.list, show_push_info_item, &info);
1230                 string_list_clear(info.list, 0);
1231
1232                 free_remote_ref_states(&states);
1233         }
1234
1235         return result;
1236 }
1237
1238 static int set_head(int argc, const char **argv)
1239 {
1240         int i, opt_a = 0, opt_d = 0, result = 0;
1241         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1242         char *head_name = NULL;
1243
1244         struct option options[] = {
1245                 OPT_BOOL('a', "auto", &opt_a,
1246                          N_("set refs/remotes/<name>/HEAD according to remote")),
1247                 OPT_BOOL('d', "delete", &opt_d,
1248                          N_("delete refs/remotes/<name>/HEAD")),
1249                 OPT_END()
1250         };
1251         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1252                              0);
1253         if (argc)
1254                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1255
1256         if (!opt_a && !opt_d && argc == 2) {
1257                 head_name = xstrdup(argv[1]);
1258         } else if (opt_a && !opt_d && argc == 1) {
1259                 struct ref_states states;
1260                 memset(&states, 0, sizeof(states));
1261                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1262                 if (!states.heads.nr)
1263                         result |= error(_("Cannot determine remote HEAD"));
1264                 else if (states.heads.nr > 1) {
1265                         result |= error(_("Multiple remote HEAD branches. "
1266                                           "Please choose one explicitly with:"));
1267                         for (i = 0; i < states.heads.nr; i++)
1268                                 fprintf(stderr, "  git remote set-head %s %s\n",
1269                                         argv[0], states.heads.items[i].string);
1270                 } else
1271                         head_name = xstrdup(states.heads.items[0].string);
1272                 free_remote_ref_states(&states);
1273         } else if (opt_d && !opt_a && argc == 1) {
1274                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1275                         result |= error(_("Could not delete %s"), buf.buf);
1276         } else
1277                 usage_with_options(builtin_remote_sethead_usage, options);
1278
1279         if (head_name) {
1280                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1281                 /* make sure it's valid */
1282                 if (!ref_exists(buf2.buf))
1283                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1284                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1285                         result |= error(_("Could not setup %s"), buf.buf);
1286                 if (opt_a)
1287                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1288                 free(head_name);
1289         }
1290
1291         strbuf_release(&buf);
1292         strbuf_release(&buf2);
1293         return result;
1294 }
1295
1296 static int prune_remote(const char *remote, int dry_run)
1297 {
1298         int result = 0;
1299         struct ref_states states;
1300         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1301         struct string_list_item *item;
1302         const char *dangling_msg = dry_run
1303                 ? _(" %s will become dangling!")
1304                 : _(" %s has become dangling!");
1305
1306         memset(&states, 0, sizeof(states));
1307         get_remote_ref_states(remote, &states, GET_REF_STATES);
1308
1309         if (!states.stale.nr) {
1310                 free_remote_ref_states(&states);
1311                 return 0;
1312         }
1313
1314         printf_ln(_("Pruning %s"), remote);
1315         printf_ln(_("URL: %s"),
1316                   states.remote->url_nr
1317                   ? states.remote->url[0]
1318                   : _("(no URL)"));
1319
1320         for_each_string_list_item(item, &states.stale)
1321                 string_list_append(&refs_to_prune, item->util);
1322         string_list_sort(&refs_to_prune);
1323
1324         if (!dry_run)
1325                 result |= delete_refs(&refs_to_prune);
1326
1327         for_each_string_list_item(item, &states.stale) {
1328                 const char *refname = item->util;
1329
1330                 if (dry_run)
1331                         printf_ln(_(" * [would prune] %s"),
1332                                abbrev_ref(refname, "refs/remotes/"));
1333                 else
1334                         printf_ln(_(" * [pruned] %s"),
1335                                abbrev_ref(refname, "refs/remotes/"));
1336         }
1337
1338         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1339
1340         string_list_clear(&refs_to_prune, 0);
1341         free_remote_ref_states(&states);
1342         return result;
1343 }
1344
1345 static int prune(int argc, const char **argv)
1346 {
1347         int dry_run = 0, result = 0;
1348         struct option options[] = {
1349                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1350                 OPT_END()
1351         };
1352
1353         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1354                              0);
1355
1356         if (argc < 1)
1357                 usage_with_options(builtin_remote_prune_usage, options);
1358
1359         for (; argc; argc--, argv++)
1360                 result |= prune_remote(*argv, dry_run);
1361
1362         return result;
1363 }
1364
1365 static int get_remote_default(const char *key, const char *value, void *priv)
1366 {
1367         if (strcmp(key, "remotes.default") == 0) {
1368                 int *found = priv;
1369                 *found = 1;
1370         }
1371         return 0;
1372 }
1373
1374 static int update(int argc, const char **argv)
1375 {
1376         int i, prune = -1;
1377         struct option options[] = {
1378                 OPT_BOOL('p', "prune", &prune,
1379                          N_("prune remotes after fetching")),
1380                 OPT_END()
1381         };
1382         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1383         int default_defined = 0;
1384         int retval;
1385
1386         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1387                              PARSE_OPT_KEEP_ARGV0);
1388
1389         argv_array_push(&fetch_argv, "fetch");
1390
1391         if (prune != -1)
1392                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1393         if (verbose)
1394                 argv_array_push(&fetch_argv, "-v");
1395         argv_array_push(&fetch_argv, "--multiple");
1396         if (argc < 2)
1397                 argv_array_push(&fetch_argv, "default");
1398         for (i = 1; i < argc; i++)
1399                 argv_array_push(&fetch_argv, argv[i]);
1400
1401         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1402                 git_config(get_remote_default, &default_defined);
1403                 if (!default_defined) {
1404                         argv_array_pop(&fetch_argv);
1405                         argv_array_push(&fetch_argv, "--all");
1406                 }
1407         }
1408
1409         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1410         argv_array_clear(&fetch_argv);
1411         return retval;
1412 }
1413
1414 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1415 {
1416         return git_config_set_multivar(key, NULL, NULL, 1);
1417 }
1418
1419 static int add_branches(struct remote *remote, const char **branches,
1420                         const char *key)
1421 {
1422         const char *remotename = remote->name;
1423         int mirror = remote->mirror;
1424         struct strbuf refspec = STRBUF_INIT;
1425
1426         for (; *branches; branches++)
1427                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1428                         strbuf_release(&refspec);
1429                         return 1;
1430                 }
1431
1432         strbuf_release(&refspec);
1433         return 0;
1434 }
1435
1436 static int set_remote_branches(const char *remotename, const char **branches,
1437                                 int add_mode)
1438 {
1439         struct strbuf key = STRBUF_INIT;
1440         struct remote *remote;
1441
1442         strbuf_addf(&key, "remote.%s.fetch", remotename);
1443
1444         remote = remote_get(remotename);
1445         if (!remote_is_configured(remote))
1446                 die(_("No such remote '%s'"), remotename);
1447
1448         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1449                 strbuf_release(&key);
1450                 return 1;
1451         }
1452         if (add_branches(remote, branches, key.buf)) {
1453                 strbuf_release(&key);
1454                 return 1;
1455         }
1456
1457         strbuf_release(&key);
1458         return 0;
1459 }
1460
1461 static int set_branches(int argc, const char **argv)
1462 {
1463         int add_mode = 0;
1464         struct option options[] = {
1465                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1466                 OPT_END()
1467         };
1468
1469         argc = parse_options(argc, argv, NULL, options,
1470                              builtin_remote_setbranches_usage, 0);
1471         if (argc == 0) {
1472                 error(_("no remote specified"));
1473                 usage_with_options(builtin_remote_setbranches_usage, options);
1474         }
1475         argv[argc] = NULL;
1476
1477         return set_remote_branches(argv[0], argv + 1, add_mode);
1478 }
1479
1480 static int get_url(int argc, const char **argv)
1481 {
1482         int i, push_mode = 0, all_mode = 0;
1483         const char *remotename = NULL;
1484         struct remote *remote;
1485         const char **url;
1486         int url_nr;
1487         struct option options[] = {
1488                 OPT_BOOL('\0', "push", &push_mode,
1489                          N_("query push URLs rather than fetch URLs")),
1490                 OPT_BOOL('\0', "all", &all_mode,
1491                          N_("return all URLs")),
1492                 OPT_END()
1493         };
1494         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1495
1496         if (argc != 1)
1497                 usage_with_options(builtin_remote_geturl_usage, options);
1498
1499         remotename = argv[0];
1500
1501         remote = remote_get(remotename);
1502         if (!remote_is_configured(remote))
1503                 die(_("No such remote '%s'"), remotename);
1504
1505         url_nr = 0;
1506         if (push_mode) {
1507                 url = remote->pushurl;
1508                 url_nr = remote->pushurl_nr;
1509         }
1510         /* else fetch mode */
1511
1512         /* Use the fetch URL when no push URLs were found or requested. */
1513         if (!url_nr) {
1514                 url = remote->url;
1515                 url_nr = remote->url_nr;
1516         }
1517
1518         if (!url_nr)
1519                 die(_("no URLs configured for remote '%s'"), remotename);
1520
1521         if (all_mode) {
1522                 for (i = 0; i < url_nr; i++)
1523                         printf_ln("%s", url[i]);
1524         } else {
1525                 printf_ln("%s", *url);
1526         }
1527
1528         return 0;
1529 }
1530
1531 static int set_url(int argc, const char **argv)
1532 {
1533         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1534         int matches = 0, negative_matches = 0;
1535         const char *remotename = NULL;
1536         const char *newurl = NULL;
1537         const char *oldurl = NULL;
1538         struct remote *remote;
1539         regex_t old_regex;
1540         const char **urlset;
1541         int urlset_nr;
1542         struct strbuf name_buf = STRBUF_INIT;
1543         struct option options[] = {
1544                 OPT_BOOL('\0', "push", &push_mode,
1545                          N_("manipulate push URLs")),
1546                 OPT_BOOL('\0', "add", &add_mode,
1547                          N_("add URL")),
1548                 OPT_BOOL('\0', "delete", &delete_mode,
1549                             N_("delete URLs")),
1550                 OPT_END()
1551         };
1552         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1553                              PARSE_OPT_KEEP_ARGV0);
1554
1555         if (add_mode && delete_mode)
1556                 die(_("--add --delete doesn't make sense"));
1557
1558         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1559                 usage_with_options(builtin_remote_seturl_usage, options);
1560
1561         remotename = argv[1];
1562         newurl = argv[2];
1563         if (argc > 3)
1564                 oldurl = argv[3];
1565
1566         if (delete_mode)
1567                 oldurl = newurl;
1568
1569         remote = remote_get(remotename);
1570         if (!remote_is_configured(remote))
1571                 die(_("No such remote '%s'"), remotename);
1572
1573         if (push_mode) {
1574                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1575                 urlset = remote->pushurl;
1576                 urlset_nr = remote->pushurl_nr;
1577         } else {
1578                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1579                 urlset = remote->url;
1580                 urlset_nr = remote->url_nr;
1581         }
1582
1583         /* Special cases that add new entry. */
1584         if ((!oldurl && !delete_mode) || add_mode) {
1585                 if (add_mode)
1586                         git_config_set_multivar(name_buf.buf, newurl,
1587                                 "^$", 0);
1588                 else
1589                         git_config_set(name_buf.buf, newurl);
1590                 strbuf_release(&name_buf);
1591                 return 0;
1592         }
1593
1594         /* Old URL specified. Demand that one matches. */
1595         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1596                 die(_("Invalid old URL pattern: %s"), oldurl);
1597
1598         for (i = 0; i < urlset_nr; i++)
1599                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1600                         matches++;
1601                 else
1602                         negative_matches++;
1603         if (!delete_mode && !matches)
1604                 die(_("No such URL found: %s"), oldurl);
1605         if (delete_mode && !negative_matches && !push_mode)
1606                 die(_("Will not delete all non-push URLs"));
1607
1608         regfree(&old_regex);
1609
1610         if (!delete_mode)
1611                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1612         else
1613                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1614         return 0;
1615 }
1616
1617 int cmd_remote(int argc, const char **argv, const char *prefix)
1618 {
1619         struct option options[] = {
1620                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1621                 OPT_END()
1622         };
1623         int result;
1624
1625         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1626                 PARSE_OPT_STOP_AT_NON_OPTION);
1627
1628         if (argc < 1)
1629                 result = show_all();
1630         else if (!strcmp(argv[0], "add"))
1631                 result = add(argc, argv);
1632         else if (!strcmp(argv[0], "rename"))
1633                 result = mv(argc, argv);
1634         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1635                 result = rm(argc, argv);
1636         else if (!strcmp(argv[0], "set-head"))
1637                 result = set_head(argc, argv);
1638         else if (!strcmp(argv[0], "set-branches"))
1639                 result = set_branches(argc, argv);
1640         else if (!strcmp(argv[0], "get-url"))
1641                 result = get_url(argc, argv);
1642         else if (!strcmp(argv[0], "set-url"))
1643                 result = set_url(argc, argv);
1644         else if (!strcmp(argv[0], "show"))
1645                 result = show(argc, argv);
1646         else if (!strcmp(argv[0], "prune"))
1647                 result = prune(argc, argv);
1648         else if (!strcmp(argv[0], "update"))
1649                 result = update(argc, argv);
1650         else {
1651                 error(_("Unknown subcommand: %s"), argv[0]);
1652                 usage_with_options(builtin_remote_usage, options);
1653         }
1654
1655         return result ? 1 : 0;
1656 }