builtin/remote.c

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