git.oblomov.eu Git - git/blob - 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_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, 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.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, 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);
 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;
 550         const char *new;
 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         struct object_id orig_oid;
 562         const char *symref;
 563
 564         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 565         if (starts_with(refname, buf.buf)) {
 566                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 567                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 568                                             orig_oid.hash, &flag);
 569                 if (flag & REF_ISSYMREF)
 570                         item->util = xstrdup(symref);
 571                 else
 572                         item->util = NULL;
 573         }
 574         strbuf_release(&buf);
 575
 576         return 0;
 577 }
 578
 579 static int migrate_file(struct remote *remote)
 580 {
 581         struct strbuf buf = STRBUF_INIT;
 582         int i;
 583
 584         strbuf_addf(&buf, "remote.%s.url", remote->name);
 585         for (i = 0; i < remote->url_nr; i++)
 586                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 587         strbuf_reset(&buf);
 588         strbuf_addf(&buf, "remote.%s.push", remote->name);
 589         for (i = 0; i < remote->push_refspec_nr; i++)
 590                 git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0);
 591         strbuf_reset(&buf);
 592         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 593         for (i = 0; i < remote->fetch_refspec_nr; i++)
 594                 git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0);
 595         if (remote->origin == REMOTE_REMOTES)
 596                 unlink_or_warn(git_path("remotes/%s", remote->name));
 597         else if (remote->origin == REMOTE_BRANCHES)
 598                 unlink_or_warn(git_path("branches/%s", remote->name));
 599         strbuf_release(&buf);
 600
 601         return 0;
 602 }
 603
 604 static int mv(int argc, const char **argv)
 605 {
 606         struct option options[] = {
 607                 OPT_END()
 608         };
 609         struct remote *oldremote, *newremote;
 610         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 611                 old_remote_context = STRBUF_INIT;
 612         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 613         struct rename_info rename;
 614         int i, refspec_updated = 0;
 615
 616         if (argc != 3)
 617                 usage_with_options(builtin_remote_rename_usage, options);
 618
 619         rename.old = argv[1];
 620         rename.new = argv[2];
 621         rename.remote_branches = &remote_branches;
 622
 623         oldremote = remote_get(rename.old);
 624         if (!remote_is_configured(oldremote, 1))
 625                 die(_("No such remote: %s"), rename.old);
 626
 627         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 628                 return migrate_file(oldremote);
 629
 630         newremote = remote_get(rename.new);
 631         if (remote_is_configured(newremote, 1))
 632                 die(_("remote %s already exists."), rename.new);
 633
 634         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 635         if (!valid_fetch_refspec(buf.buf))
 636                 die(_("'%s' is not a valid remote name"), rename.new);
 637
 638         strbuf_reset(&buf);
 639         strbuf_addf(&buf, "remote.%s", rename.old);
 640         strbuf_addf(&buf2, "remote.%s", rename.new);
 641         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 642                 return error(_("Could not rename config section '%s' to '%s'"),
 643                                 buf.buf, buf2.buf);
 644
 645         strbuf_reset(&buf);
 646         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 647         git_config_set_multivar(buf.buf, NULL, NULL, 1);
 648         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 649         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 650                 char *ptr;
 651
 652                 strbuf_reset(&buf2);
 653                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 654                 ptr = strstr(buf2.buf, old_remote_context.buf);
 655                 if (ptr) {
 656                         refspec_updated = 1;
 657                         strbuf_splice(&buf2,
 658                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 659                                       strlen(rename.old), rename.new,
 660                                       strlen(rename.new));
 661                 } else
 662                         warning(_("Not updating non-default fetch refspec\n"
 663                                   "\t%s\n"
 664                                   "\tPlease update the configuration manually if necessary."),
 665                                 buf2.buf);
 666
 667                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 668         }
 669
 670         read_branches();
 671         for (i = 0; i < branch_list.nr; i++) {
 672                 struct string_list_item *item = branch_list.items + i;
 673                 struct branch_info *info = item->util;
 674                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 675                         strbuf_reset(&buf);
 676                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 677                         git_config_set(buf.buf, rename.new);
 678                 }
 679         }
 680
 681         if (!refspec_updated)
 682                 return 0;
 683
 684         /*
 685          * First remove symrefs, then rename the rest, finally create
 686          * the new symrefs.
 687          */
 688         for_each_ref(read_remote_branches, &rename);
 689         for (i = 0; i < remote_branches.nr; i++) {
 690                 struct string_list_item *item = remote_branches.items + i;
 691                 int flag = 0;
 692                 struct object_id oid;
 693
 694                 read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 695                 if (!(flag & REF_ISSYMREF))
 696                         continue;
 697                 if (delete_ref(NULL, item->string, NULL, REF_NODEREF))
 698                         die(_("deleting '%s' failed"), item->string);
 699         }
 700         for (i = 0; i < remote_branches.nr; i++) {
 701                 struct string_list_item *item = remote_branches.items + i;
 702
 703                 if (item->util)
 704                         continue;
 705                 strbuf_reset(&buf);
 706                 strbuf_addstr(&buf, item->string);
 707                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 708                                 rename.new, strlen(rename.new));
 709                 strbuf_reset(&buf2);
 710                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 711                                 item->string, buf.buf);
 712                 if (rename_ref(item->string, buf.buf, buf2.buf))
 713                         die(_("renaming '%s' failed"), item->string);
 714         }
 715         for (i = 0; i < remote_branches.nr; i++) {
 716                 struct string_list_item *item = remote_branches.items + i;
 717
 718                 if (!item->util)
 719                         continue;
 720                 strbuf_reset(&buf);
 721                 strbuf_addstr(&buf, item->string);
 722                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 723                                 rename.new, strlen(rename.new));
 724                 strbuf_reset(&buf2);
 725                 strbuf_addstr(&buf2, item->util);
 726                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 727                                 rename.new, strlen(rename.new));
 728                 strbuf_reset(&buf3);
 729                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 730                                 item->string, buf.buf);
 731                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 732                         die(_("creating '%s' failed"), buf.buf);
 733         }
 734         return 0;
 735 }
 736
 737 static int rm(int argc, const char **argv)
 738 {
 739         struct option options[] = {
 740                 OPT_END()
 741         };
 742         struct remote *remote;
 743         struct strbuf buf = STRBUF_INIT;
 744         struct known_remotes known_remotes = { NULL, NULL };
 745         struct string_list branches = STRING_LIST_INIT_DUP;
 746         struct string_list skipped = STRING_LIST_INIT_DUP;
 747         struct branches_for_remote cb_data;
 748         int i, result;
 749
 750         memset(&cb_data, 0, sizeof(cb_data));
 751         cb_data.branches = &branches;
 752         cb_data.skipped = &skipped;
 753         cb_data.keep = &known_remotes;
 754
 755         if (argc != 2)
 756                 usage_with_options(builtin_remote_rm_usage, options);
 757
 758         remote = remote_get(argv[1]);
 759         if (!remote_is_configured(remote, 1))
 760                 die(_("No such remote: %s"), argv[1]);
 761
 762         known_remotes.to_delete = remote;
 763         for_each_remote(add_known_remote, &known_remotes);
 764
 765         read_branches();
 766         for (i = 0; i < branch_list.nr; i++) {
 767                 struct string_list_item *item = branch_list.items + i;
 768                 struct branch_info *info = item->util;
 769                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 770                         const char *keys[] = { "remote", "merge", NULL }, **k;
 771                         for (k = keys; *k; k++) {
 772                                 strbuf_reset(&buf);
 773                                 strbuf_addf(&buf, "branch.%s.%s",
 774                                                 item->string, *k);
 775                                 result = git_config_set_gently(buf.buf, NULL);
 776                                 if (result && result != CONFIG_NOTHING_SET)
 777                                         die(_("could not unset '%s'"), buf.buf);
 778                         }
 779                 }
 780         }
 781
 782         /*
 783          * We cannot just pass a function to for_each_ref() which deletes
 784          * the branches one by one, since for_each_ref() relies on cached
 785          * refs, which are invalidated when deleting a branch.
 786          */
 787         cb_data.remote = remote;
 788         result = for_each_ref(add_branch_for_removal, &cb_data);
 789         strbuf_release(&buf);
 790
 791         if (!result)
 792                 result = delete_refs("remote: remove", &branches, REF_NODEREF);
 793         string_list_clear(&branches, 0);
 794
 795         if (skipped.nr) {
 796                 fprintf_ln(stderr,
 797                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 798                               "to delete it, use:",
 799                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 800                               "to delete them, use:",
 801                               skipped.nr));
 802                 for (i = 0; i < skipped.nr; i++)
 803                         fprintf(stderr, "  git branch -d %s\n",
 804                                 skipped.items[i].string);
 805         }
 806         string_list_clear(&skipped, 0);
 807
 808         if (!result) {
 809                 strbuf_addf(&buf, "remote.%s", remote->name);
 810                 if (git_config_rename_section(buf.buf, NULL) < 1)
 811                         return error(_("Could not remove config section '%s'"), buf.buf);
 812         }
 813
 814         return result;
 815 }
 816
 817 static void clear_push_info(void *util, const char *string)
 818 {
 819         struct push_info *info = util;
 820         free(info->dest);
 821         free(info);
 822 }
 823
 824 static void free_remote_ref_states(struct ref_states *states)
 825 {
 826         string_list_clear(&states->new, 0);
 827         string_list_clear(&states->stale, 1);
 828         string_list_clear(&states->tracked, 0);
 829         string_list_clear(&states->heads, 0);
 830         string_list_clear_func(&states->push, clear_push_info);
 831 }
 832
 833 static int append_ref_to_tracked_list(const char *refname,
 834         const struct object_id *oid, int flags, void *cb_data)
 835 {
 836         struct ref_states *states = cb_data;
 837         struct refspec refspec;
 838
 839         if (flags & REF_ISSYMREF)
 840                 return 0;
 841
 842         memset(&refspec, 0, sizeof(refspec));
 843         refspec.dst = (char *)refname;
 844         if (!remote_find_tracking(states->remote, &refspec))
 845                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 846
 847         return 0;
 848 }
 849
 850 static int get_remote_ref_states(const char *name,
 851                                  struct ref_states *states,
 852                                  int query)
 853 {
 854         struct transport *transport;
 855         const struct ref *remote_refs;
 856
 857         states->remote = remote_get(name);
 858         if (!states->remote)
 859                 return error(_("No such remote: %s"), name);
 860
 861         read_branches();
 862
 863         if (query) {
 864                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 865                         states->remote->url[0] : NULL);
 866                 remote_refs = transport_get_remote_refs(transport);
 867                 transport_disconnect(transport);
 868
 869                 states->queried = 1;
 870                 if (query & GET_REF_STATES)
 871                         get_ref_states(remote_refs, states);
 872                 if (query & GET_HEAD_NAMES)
 873                         get_head_names(remote_refs, states);
 874                 if (query & GET_PUSH_REF_STATES)
 875                         get_push_ref_states(remote_refs, states);
 876         } else {
 877                 for_each_ref(append_ref_to_tracked_list, states);
 878                 string_list_sort(&states->tracked);
 879                 get_push_ref_states_noquery(states);
 880         }
 881
 882         return 0;
 883 }
 884
 885 struct show_info {
 886         struct string_list *list;
 887         struct ref_states *states;
 888         int width, width2;
 889         int any_rebase;
 890 };
 891
 892 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 893 {
 894         struct show_info *info = cb_data;
 895         int n = strlen(item->string);
 896         if (n > info->width)
 897                 info->width = n;
 898         string_list_insert(info->list, item->string);
 899         return 0;
 900 }
 901
 902 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 903 {
 904         struct show_info *info = cb_data;
 905         struct ref_states *states = info->states;
 906         const char *name = item->string;
 907
 908         if (states->queried) {
 909                 const char *fmt = "%s";
 910                 const char *arg = "";
 911                 if (string_list_has_string(&states->new, name)) {
 912                         fmt = _(" new (next fetch will store in remotes/%s)");
 913                         arg = states->remote->name;
 914                 } else if (string_list_has_string(&states->tracked, name))
 915                         arg = _(" tracked");
 916                 else if (string_list_has_string(&states->stale, name))
 917                         arg = _(" stale (use 'git remote prune' to remove)");
 918                 else
 919                         arg = _(" ???");
 920                 printf("    %-*s", info->width, name);
 921                 printf(fmt, arg);
 922                 printf("\n");
 923         } else
 924                 printf("    %s\n", name);
 925
 926         return 0;
 927 }
 928
 929 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 930 {
 931         struct show_info *show_info = cb_data;
 932         struct ref_states *states = show_info->states;
 933         struct branch_info *branch_info = branch_item->util;
 934         struct string_list_item *item;
 935         int n;
 936
 937         if (!branch_info->merge.nr || !branch_info->remote_name ||
 938             strcmp(states->remote->name, branch_info->remote_name))
 939                 return 0;
 940         if ((n = strlen(branch_item->string)) > show_info->width)
 941                 show_info->width = n;
 942         if (branch_info->rebase)
 943                 show_info->any_rebase = 1;
 944
 945         item = string_list_insert(show_info->list, branch_item->string);
 946         item->util = branch_info;
 947
 948         return 0;
 949 }
 950
 951 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 952 {
 953         struct show_info *show_info = cb_data;
 954         struct branch_info *branch_info = item->util;
 955         struct string_list *merge = &branch_info->merge;
 956         int width = show_info->width + 4;
 957         int i;
 958
 959         if (branch_info->rebase && branch_info->merge.nr > 1) {
 960                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 961                         item->string);
 962                 return 0;
 963         }
 964
 965         printf("    %-*s ", show_info->width, item->string);
 966         if (branch_info->rebase) {
 967                 printf_ln(branch_info->rebase == INTERACTIVE_REBASE
 968                           ? _("rebases interactively onto remote %s")
 969                           : _("rebases onto remote %s"), merge->items[0].string);
 970                 return 0;
 971         } else if (show_info->any_rebase) {
 972                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 973                 width++;
 974         } else {
 975                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 976         }
 977         for (i = 1; i < merge->nr; i++)
 978                 printf(_("%-*s    and with remote %s\n"), width, "",
 979                        merge->items[i].string);
 980
 981         return 0;
 982 }
 983
 984 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 985 {
 986         struct show_info *show_info = cb_data;
 987         struct push_info *push_info = push_item->util;
 988         struct string_list_item *item;
 989         int n;
 990         if ((n = strlen(push_item->string)) > show_info->width)
 991                 show_info->width = n;
 992         if ((n = strlen(push_info->dest)) > show_info->width2)
 993                 show_info->width2 = n;
 994         item = string_list_append(show_info->list, push_item->string);
 995         item->util = push_item->util;
 996         return 0;
 997 }
 998
 999 /*
1000  * Sorting comparison for a string list that has push_info
1001  * structs in its util field
1002  */
1003 static int cmp_string_with_push(const void *va, const void *vb)
1004 {
1005         const struct string_list_item *a = va;
1006         const struct string_list_item *b = vb;
1007         const struct push_info *a_push = a->util;
1008         const struct push_info *b_push = b->util;
1009         int cmp = strcmp(a->string, b->string);
1010         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1011 }
1012
1013 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1014 {
1015         struct show_info *show_info = cb_data;
1016         struct push_info *push_info = item->util;
1017         const char *src = item->string, *status = NULL;
1018
1019         switch (push_info->status) {
1020         case PUSH_STATUS_CREATE:
1021                 status = _("create");
1022                 break;
1023         case PUSH_STATUS_DELETE:
1024                 status = _("delete");
1025                 src = _("(none)");
1026                 break;
1027         case PUSH_STATUS_UPTODATE:
1028                 status = _("up to date");
1029                 break;
1030         case PUSH_STATUS_FASTFORWARD:
1031                 status = _("fast-forwardable");
1032                 break;
1033         case PUSH_STATUS_OUTOFDATE:
1034                 status = _("local out of date");
1035                 break;
1036         case PUSH_STATUS_NOTQUERIED:
1037                 break;
1038         }
1039         if (status) {
1040                 if (push_info->forced)
1041                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1042                                show_info->width2, push_info->dest, status);
1043                 else
1044                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1045                                show_info->width2, push_info->dest, status);
1046         } else {
1047                 if (push_info->forced)
1048                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1049                                push_info->dest);
1050                 else
1051                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1052                                push_info->dest);
1053         }
1054         return 0;
1055 }
1056
1057 static int get_one_entry(struct remote *remote, void *priv)
1058 {
1059         struct string_list *list = priv;
1060         struct strbuf url_buf = STRBUF_INIT;
1061         const char **url;
1062         int i, url_nr;
1063
1064         if (remote->url_nr > 0) {
1065                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1066                 string_list_append(list, remote->name)->util =
1067                                 strbuf_detach(&url_buf, NULL);
1068         } else
1069                 string_list_append(list, remote->name)->util = NULL;
1070         if (remote->pushurl_nr) {
1071                 url = remote->pushurl;
1072                 url_nr = remote->pushurl_nr;
1073         } else {
1074                 url = remote->url;
1075                 url_nr = remote->url_nr;
1076         }
1077         for (i = 0; i < url_nr; i++)
1078         {
1079                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1080                 string_list_append(list, remote->name)->util =
1081                                 strbuf_detach(&url_buf, NULL);
1082         }
1083
1084         return 0;
1085 }
1086
1087 static int show_all(void)
1088 {
1089         struct string_list list = STRING_LIST_INIT_NODUP;
1090         int result;
1091
1092         list.strdup_strings = 1;
1093         result = for_each_remote(get_one_entry, &list);
1094
1095         if (!result) {
1096                 int i;
1097
1098                 string_list_sort(&list);
1099                 for (i = 0; i < list.nr; i++) {
1100                         struct string_list_item *item = list.items + i;
1101                         if (verbose)
1102                                 printf("%s\t%s\n", item->string,
1103                                         item->util ? (const char *)item->util : "");
1104                         else {
1105                                 if (i && !strcmp((item - 1)->string, item->string))
1106                                         continue;
1107                                 printf("%s\n", item->string);
1108                         }
1109                 }
1110         }
1111         string_list_clear(&list, 1);
1112         return result;
1113 }
1114
1115 static int show(int argc, const char **argv)
1116 {
1117         int no_query = 0, result = 0, query_flag = 0;
1118         struct option options[] = {
1119                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1120                 OPT_END()
1121         };
1122         struct ref_states states;
1123         struct string_list info_list = STRING_LIST_INIT_NODUP;
1124         struct show_info info;
1125
1126         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1127                              0);
1128
1129         if (argc < 1)
1130                 return show_all();
1131
1132         if (!no_query)
1133                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1134
1135         memset(&states, 0, sizeof(states));
1136         memset(&info, 0, sizeof(info));
1137         info.states = &states;
1138         info.list = &info_list;
1139         for (; argc; argc--, argv++) {
1140                 int i;
1141                 const char **url;
1142                 int url_nr;
1143
1144                 get_remote_ref_states(*argv, &states, query_flag);
1145
1146                 printf_ln(_("* remote %s"), *argv);
1147                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1148                        states.remote->url[0] : _("(no URL)"));
1149                 if (states.remote->pushurl_nr) {
1150                         url = states.remote->pushurl;
1151                         url_nr = states.remote->pushurl_nr;
1152                 } else {
1153                         url = states.remote->url;
1154                         url_nr = states.remote->url_nr;
1155                 }
1156                 for (i = 0; i < url_nr; i++)
1157                         /*
1158                          * TRANSLATORS: the colon ':' should align
1159                          * with the one in " Fetch URL: %s"
1160                          * translation.
1161                          */
1162                         printf_ln(_("  Push  URL: %s"), url[i]);
1163                 if (!i)
1164                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1165                 if (no_query)
1166                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1167                 else if (!states.heads.nr)
1168                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1169                 else if (states.heads.nr == 1)
1170                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1171                 else {
1172                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1173                                  " may be one of the following):\n"));
1174                         for (i = 0; i < states.heads.nr; i++)
1175                                 printf("    %s\n", states.heads.items[i].string);
1176                 }
1177
1178                 /* remote branch info */
1179                 info.width = 0;
1180                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1181                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1182                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1183                 if (info.list->nr)
1184                         printf_ln(Q_("  Remote branch:%s",
1185                                      "  Remote branches:%s",
1186                                      info.list->nr),
1187                                   no_query ? _(" (status not queried)") : "");
1188                 for_each_string_list(info.list, show_remote_info_item, &info);
1189                 string_list_clear(info.list, 0);
1190
1191                 /* git pull info */
1192                 info.width = 0;
1193                 info.any_rebase = 0;
1194                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1195                 if (info.list->nr)
1196                         printf_ln(Q_("  Local branch configured for 'git pull':",
1197                                      "  Local branches configured for 'git pull':",
1198                                      info.list->nr));
1199                 for_each_string_list(info.list, show_local_info_item, &info);
1200                 string_list_clear(info.list, 0);
1201
1202                 /* git push info */
1203                 if (states.remote->mirror)
1204                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1205
1206                 info.width = info.width2 = 0;
1207                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1208                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1209                 if (info.list->nr)
1210                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1211                                      "  Local refs configured for 'git push'%s:",
1212                                      info.list->nr),
1213                                   no_query ? _(" (status not queried)") : "");
1214                 for_each_string_list(info.list, show_push_info_item, &info);
1215                 string_list_clear(info.list, 0);
1216
1217                 free_remote_ref_states(&states);
1218         }
1219
1220         return result;
1221 }
1222
1223 static int set_head(int argc, const char **argv)
1224 {
1225         int i, opt_a = 0, opt_d = 0, result = 0;
1226         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1227         char *head_name = NULL;
1228
1229         struct option options[] = {
1230                 OPT_BOOL('a', "auto", &opt_a,
1231                          N_("set refs/remotes/<name>/HEAD according to remote")),
1232                 OPT_BOOL('d', "delete", &opt_d,
1233                          N_("delete refs/remotes/<name>/HEAD")),
1234                 OPT_END()
1235         };
1236         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1237                              0);
1238         if (argc)
1239                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1240
1241         if (!opt_a && !opt_d && argc == 2) {
1242                 head_name = xstrdup(argv[1]);
1243         } else if (opt_a && !opt_d && argc == 1) {
1244                 struct ref_states states;
1245                 memset(&states, 0, sizeof(states));
1246                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1247                 if (!states.heads.nr)
1248                         result |= error(_("Cannot determine remote HEAD"));
1249                 else if (states.heads.nr > 1) {
1250                         result |= error(_("Multiple remote HEAD branches. "
1251                                           "Please choose one explicitly with:"));
1252                         for (i = 0; i < states.heads.nr; i++)
1253                                 fprintf(stderr, "  git remote set-head %s %s\n",
1254                                         argv[0], states.heads.items[i].string);
1255                 } else
1256                         head_name = xstrdup(states.heads.items[0].string);
1257                 free_remote_ref_states(&states);
1258         } else if (opt_d && !opt_a && argc == 1) {
1259                 if (delete_ref(NULL, buf.buf, NULL, REF_NODEREF))
1260                         result |= error(_("Could not delete %s"), buf.buf);
1261         } else
1262                 usage_with_options(builtin_remote_sethead_usage, options);
1263
1264         if (head_name) {
1265                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1266                 /* make sure it's valid */
1267                 if (!ref_exists(buf2.buf))
1268                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1269                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1270                         result |= error(_("Could not setup %s"), buf.buf);
1271                 if (opt_a)
1272                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1273                 free(head_name);
1274         }
1275
1276         strbuf_release(&buf);
1277         strbuf_release(&buf2);
1278         return result;
1279 }
1280
1281 static int prune_remote(const char *remote, int dry_run)
1282 {
1283         int result = 0;
1284         struct ref_states states;
1285         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1286         struct string_list_item *item;
1287         const char *dangling_msg = dry_run
1288                 ? _(" %s will become dangling!")
1289                 : _(" %s has become dangling!");
1290
1291         memset(&states, 0, sizeof(states));
1292         get_remote_ref_states(remote, &states, GET_REF_STATES);
1293
1294         if (!states.stale.nr) {
1295                 free_remote_ref_states(&states);
1296                 return 0;
1297         }
1298
1299         printf_ln(_("Pruning %s"), remote);
1300         printf_ln(_("URL: %s"),
1301                   states.remote->url_nr
1302                   ? states.remote->url[0]
1303                   : _("(no URL)"));
1304
1305         for_each_string_list_item(item, &states.stale)
1306                 string_list_append(&refs_to_prune, item->util);
1307         string_list_sort(&refs_to_prune);
1308
1309         if (!dry_run)
1310                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1311
1312         for_each_string_list_item(item, &states.stale) {
1313                 const char *refname = item->util;
1314
1315                 if (dry_run)
1316                         printf_ln(_(" * [would prune] %s"),
1317                                abbrev_ref(refname, "refs/remotes/"));
1318                 else
1319                         printf_ln(_(" * [pruned] %s"),
1320                                abbrev_ref(refname, "refs/remotes/"));
1321         }
1322
1323         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1324
1325         string_list_clear(&refs_to_prune, 0);
1326         free_remote_ref_states(&states);
1327         return result;
1328 }
1329
1330 static int prune(int argc, const char **argv)
1331 {
1332         int dry_run = 0, result = 0;
1333         struct option options[] = {
1334                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1335                 OPT_END()
1336         };
1337
1338         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1339                              0);
1340
1341         if (argc < 1)
1342                 usage_with_options(builtin_remote_prune_usage, options);
1343
1344         for (; argc; argc--, argv++)
1345                 result |= prune_remote(*argv, dry_run);
1346
1347         return result;
1348 }
1349
1350 static int get_remote_default(const char *key, const char *value, void *priv)
1351 {
1352         if (strcmp(key, "remotes.default") == 0) {
1353                 int *found = priv;
1354                 *found = 1;
1355         }
1356         return 0;
1357 }
1358
1359 static int update(int argc, const char **argv)
1360 {
1361         int i, prune = -1;
1362         struct option options[] = {
1363                 OPT_BOOL('p', "prune", &prune,
1364                          N_("prune remotes after fetching")),
1365                 OPT_END()
1366         };
1367         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1368         int default_defined = 0;
1369         int retval;
1370
1371         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1372                              PARSE_OPT_KEEP_ARGV0);
1373
1374         argv_array_push(&fetch_argv, "fetch");
1375
1376         if (prune != -1)
1377                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1378         if (verbose)
1379                 argv_array_push(&fetch_argv, "-v");
1380         argv_array_push(&fetch_argv, "--multiple");
1381         if (argc < 2)
1382                 argv_array_push(&fetch_argv, "default");
1383         for (i = 1; i < argc; i++)
1384                 argv_array_push(&fetch_argv, argv[i]);
1385
1386         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1387                 git_config(get_remote_default, &default_defined);
1388                 if (!default_defined) {
1389                         argv_array_pop(&fetch_argv);
1390                         argv_array_push(&fetch_argv, "--all");
1391                 }
1392         }
1393
1394         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1395         argv_array_clear(&fetch_argv);
1396         return retval;
1397 }
1398
1399 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1400 {
1401         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1402 }
1403
1404 static void add_branches(struct remote *remote, const char **branches,
1405                          const char *key)
1406 {
1407         const char *remotename = remote->name;
1408         int mirror = remote->mirror;
1409         struct strbuf refspec = STRBUF_INIT;
1410
1411         for (; *branches; branches++)
1412                 add_branch(key, *branches, remotename, mirror, &refspec);
1413
1414         strbuf_release(&refspec);
1415 }
1416
1417 static int set_remote_branches(const char *remotename, const char **branches,
1418                                 int add_mode)
1419 {
1420         struct strbuf key = STRBUF_INIT;
1421         struct remote *remote;
1422
1423         strbuf_addf(&key, "remote.%s.fetch", remotename);
1424
1425         remote = remote_get(remotename);
1426         if (!remote_is_configured(remote, 1))
1427                 die(_("No such remote '%s'"), remotename);
1428
1429         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1430                 strbuf_release(&key);
1431                 return 1;
1432         }
1433         add_branches(remote, branches, key.buf);
1434
1435         strbuf_release(&key);
1436         return 0;
1437 }
1438
1439 static int set_branches(int argc, const char **argv)
1440 {
1441         int add_mode = 0;
1442         struct option options[] = {
1443                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1444                 OPT_END()
1445         };
1446
1447         argc = parse_options(argc, argv, NULL, options,
1448                              builtin_remote_setbranches_usage, 0);
1449         if (argc == 0) {
1450                 error(_("no remote specified"));
1451                 usage_with_options(builtin_remote_setbranches_usage, options);
1452         }
1453         argv[argc] = NULL;
1454
1455         return set_remote_branches(argv[0], argv + 1, add_mode);
1456 }
1457
1458 static int get_url(int argc, const char **argv)
1459 {
1460         int i, push_mode = 0, all_mode = 0;
1461         const char *remotename = NULL;
1462         struct remote *remote;
1463         const char **url;
1464         int url_nr;
1465         struct option options[] = {
1466                 OPT_BOOL('\0', "push", &push_mode,
1467                          N_("query push URLs rather than fetch URLs")),
1468                 OPT_BOOL('\0', "all", &all_mode,
1469                          N_("return all URLs")),
1470                 OPT_END()
1471         };
1472         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1473
1474         if (argc != 1)
1475                 usage_with_options(builtin_remote_geturl_usage, options);
1476
1477         remotename = argv[0];
1478
1479         remote = remote_get(remotename);
1480         if (!remote_is_configured(remote, 1))
1481                 die(_("No such remote '%s'"), remotename);
1482
1483         url_nr = 0;
1484         if (push_mode) {
1485                 url = remote->pushurl;
1486                 url_nr = remote->pushurl_nr;
1487         }
1488         /* else fetch mode */
1489
1490         /* Use the fetch URL when no push URLs were found or requested. */
1491         if (!url_nr) {
1492                 url = remote->url;
1493                 url_nr = remote->url_nr;
1494         }
1495
1496         if (!url_nr)
1497                 die(_("no URLs configured for remote '%s'"), remotename);
1498
1499         if (all_mode) {
1500                 for (i = 0; i < url_nr; i++)
1501                         printf_ln("%s", url[i]);
1502         } else {
1503                 printf_ln("%s", *url);
1504         }
1505
1506         return 0;
1507 }
1508
1509 static int set_url(int argc, const char **argv)
1510 {
1511         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1512         int matches = 0, negative_matches = 0;
1513         const char *remotename = NULL;
1514         const char *newurl = NULL;
1515         const char *oldurl = NULL;
1516         struct remote *remote;
1517         regex_t old_regex;
1518         const char **urlset;
1519         int urlset_nr;
1520         struct strbuf name_buf = STRBUF_INIT;
1521         struct option options[] = {
1522                 OPT_BOOL('\0', "push", &push_mode,
1523                          N_("manipulate push URLs")),
1524                 OPT_BOOL('\0', "add", &add_mode,
1525                          N_("add URL")),
1526                 OPT_BOOL('\0', "delete", &delete_mode,
1527                             N_("delete URLs")),
1528                 OPT_END()
1529         };
1530         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1531                              PARSE_OPT_KEEP_ARGV0);
1532
1533         if (add_mode && delete_mode)
1534                 die(_("--add --delete doesn't make sense"));
1535
1536         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1537                 usage_with_options(builtin_remote_seturl_usage, options);
1538
1539         remotename = argv[1];
1540         newurl = argv[2];
1541         if (argc > 3)
1542                 oldurl = argv[3];
1543
1544         if (delete_mode)
1545                 oldurl = newurl;
1546
1547         remote = remote_get(remotename);
1548         if (!remote_is_configured(remote, 1))
1549                 die(_("No such remote '%s'"), remotename);
1550
1551         if (push_mode) {
1552                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1553                 urlset = remote->pushurl;
1554                 urlset_nr = remote->pushurl_nr;
1555         } else {
1556                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1557                 urlset = remote->url;
1558                 urlset_nr = remote->url_nr;
1559         }
1560
1561         /* Special cases that add new entry. */
1562         if ((!oldurl && !delete_mode) || add_mode) {
1563                 if (add_mode)
1564                         git_config_set_multivar(name_buf.buf, newurl,
1565                                                        "^$", 0);
1566                 else
1567                         git_config_set(name_buf.buf, newurl);
1568                 goto out;
1569         }
1570
1571         /* Old URL specified. Demand that one matches. */
1572         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1573                 die(_("Invalid old URL pattern: %s"), oldurl);
1574
1575         for (i = 0; i < urlset_nr; i++)
1576                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1577                         matches++;
1578                 else
1579                         negative_matches++;
1580         if (!delete_mode && !matches)
1581                 die(_("No such URL found: %s"), oldurl);
1582         if (delete_mode && !negative_matches && !push_mode)
1583                 die(_("Will not delete all non-push URLs"));
1584
1585         regfree(&old_regex);
1586
1587         if (!delete_mode)
1588                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1589         else
1590                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1591 out:
1592         strbuf_release(&name_buf);
1593         return 0;
1594 }
1595
1596 int cmd_remote(int argc, const char **argv, const char *prefix)
1597 {
1598         struct option options[] = {
1599                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1600                 OPT_END()
1601         };
1602         int result;
1603
1604         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1605                 PARSE_OPT_STOP_AT_NON_OPTION);
1606
1607         if (argc < 1)
1608                 result = show_all();
1609         else if (!strcmp(argv[0], "add"))
1610                 result = add(argc, argv);
1611         else if (!strcmp(argv[0], "rename"))
1612                 result = mv(argc, argv);
1613         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1614                 result = rm(argc, argv);
1615         else if (!strcmp(argv[0], "set-head"))
1616                 result = set_head(argc, argv);
1617         else if (!strcmp(argv[0], "set-branches"))
1618                 result = set_branches(argc, argv);
1619         else if (!strcmp(argv[0], "get-url"))
1620                 result = get_url(argc, argv);
1621         else if (!strcmp(argv[0], "set-url"))
1622                 result = set_url(argc, argv);
1623         else if (!strcmp(argv[0], "show"))
1624                 result = show(argc, argv);
1625         else if (!strcmp(argv[0], "prune"))
1626                 result = prune(argc, argv);
1627         else if (!strcmp(argv[0], "update"))
1628                 result = update(argc, argv);
1629         else {
1630                 error(_("Unknown subcommand: %s"), argv[0]);
1631                 usage_with_options(builtin_remote_usage, options);
1632         }
1633
1634         return result ? 1 : 0;
1635 }