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