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