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 "rebase.h"
  10 #include "refs.h"
  11 #include "refspec.h"
  12 #include "object-store.h"
  13 #include "strvec.h"
  14 #include "commit-reach.h"
  15
  16 static const char * const builtin_remote_usage[] = {
  17         N_("git remote [-v | --verbose]"),
  18         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  19         N_("git remote rename <old> <new>"),
  20         N_("git remote remove <name>"),
  21         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  22         N_("git remote [-v | --verbose] show [-n] <name>"),
  23         N_("git remote prune [-n | --dry-run] <name>"),
  24         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  25         N_("git remote set-branches [--add] <name> <branch>..."),
  26         N_("git remote get-url [--push] [--all] <name>"),
  27         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  28         N_("git remote set-url --add <name> <newurl>"),
  29         N_("git remote set-url --delete <name> <url>"),
  30         NULL
  31 };
  32
  33 static const char * const builtin_remote_add_usage[] = {
  34         N_("git remote add [<options>] <name> <url>"),
  35         NULL
  36 };
  37
  38 static const char * const builtin_remote_rename_usage[] = {
  39         N_("git remote rename <old> <new>"),
  40         NULL
  41 };
  42
  43 static const char * const builtin_remote_rm_usage[] = {
  44         N_("git remote remove <name>"),
  45         NULL
  46 };
  47
  48 static const char * const builtin_remote_sethead_usage[] = {
  49         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  50         NULL
  51 };
  52
  53 static const char * const builtin_remote_setbranches_usage[] = {
  54         N_("git remote set-branches <name> <branch>..."),
  55         N_("git remote set-branches --add <name> <branch>..."),
  56         NULL
  57 };
  58
  59 static const char * const builtin_remote_show_usage[] = {
  60         N_("git remote show [<options>] <name>"),
  61         NULL
  62 };
  63
  64 static const char * const builtin_remote_prune_usage[] = {
  65         N_("git remote prune [<options>] <name>"),
  66         NULL
  67 };
  68
  69 static const char * const builtin_remote_update_usage[] = {
  70         N_("git remote update [<options>] [<group> | <remote>]..."),
  71         NULL
  72 };
  73
  74 static const char * const builtin_remote_geturl_usage[] = {
  75         N_("git remote get-url [--push] [--all] <name>"),
  76         NULL
  77 };
  78
  79 static const char * const builtin_remote_seturl_usage[] = {
  80         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  81         N_("git remote set-url --add <name> <newurl>"),
  82         N_("git remote set-url --delete <name> <url>"),
  83         NULL
  84 };
  85
  86 #define GET_REF_STATES (1<<0)
  87 #define GET_HEAD_NAMES (1<<1)
  88 #define GET_PUSH_REF_STATES (1<<2)
  89
  90 static int verbose;
  91
  92 static int fetch_remote(const char *name)
  93 {
  94         const char *argv[] = { "fetch", name, NULL, NULL };
  95         if (verbose) {
  96                 argv[1] = "-v";
  97                 argv[2] = name;
  98         }
  99         printf_ln(_("Updating %s"), name);
 100         if (run_command_v_opt(argv, RUN_GIT_CMD))
 101                 return error(_("Could not fetch %s"), name);
 102         return 0;
 103 }
 104
 105 enum {
 106         TAGS_UNSET = 0,
 107         TAGS_DEFAULT = 1,
 108         TAGS_SET = 2
 109 };
 110
 111 #define MIRROR_NONE 0
 112 #define MIRROR_FETCH 1
 113 #define MIRROR_PUSH 2
 114 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 115
 116 static void add_branch(const char *key, const char *branchname,
 117                        const char *remotename, int mirror, struct strbuf *tmp)
 118 {
 119         strbuf_reset(tmp);
 120         strbuf_addch(tmp, '+');
 121         if (mirror)
 122                 strbuf_addf(tmp, "refs/%s:refs/%s",
 123                                 branchname, branchname);
 124         else
 125                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 126                                 branchname, remotename, branchname);
 127         git_config_set_multivar(key, tmp->buf, "^$", 0);
 128 }
 129
 130 static const char mirror_advice[] =
 131 N_("--mirror is dangerous and deprecated; please\n"
 132    "\t use --mirror=fetch or --mirror=push instead");
 133
 134 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 135 {
 136         unsigned *mirror = opt->value;
 137         if (not)
 138                 *mirror = MIRROR_NONE;
 139         else if (!arg) {
 140                 warning("%s", _(mirror_advice));
 141                 *mirror = MIRROR_BOTH;
 142         }
 143         else if (!strcmp(arg, "fetch"))
 144                 *mirror = MIRROR_FETCH;
 145         else if (!strcmp(arg, "push"))
 146                 *mirror = MIRROR_PUSH;
 147         else
 148                 return error(_("unknown mirror argument: %s"), arg);
 149         return 0;
 150 }
 151
 152 static int add(int argc, const char **argv)
 153 {
 154         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 155         unsigned mirror = MIRROR_NONE;
 156         struct string_list track = STRING_LIST_INIT_NODUP;
 157         const char *master = NULL;
 158         struct remote *remote;
 159         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 160         const char *name, *url;
 161         int i;
 162
 163         struct option options[] = {
 164                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 165                 OPT_SET_INT(0, "tags", &fetch_tags,
 166                             N_("import all tags and associated objects when fetching"),
 167                             TAGS_SET),
 168                 OPT_SET_INT(0, NULL, &fetch_tags,
 169                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 170                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 171                                 N_("branch(es) to track")),
 172                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 173                 OPT_CALLBACK_F(0, "mirror", &mirror, "(push|fetch)",
 174                         N_("set up remote as a mirror to push to or fetch from"),
 175                         PARSE_OPT_OPTARG | PARSE_OPT_COMP_ARG, parse_mirror_opt),
 176                 OPT_END()
 177         };
 178
 179         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 180                              0);
 181
 182         if (argc != 2)
 183                 usage_with_options(builtin_remote_add_usage, options);
 184
 185         if (mirror && master)
 186                 die(_("specifying a master branch makes no sense with --mirror"));
 187         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 188                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 189
 190         name = argv[0];
 191         url = argv[1];
 192
 193         remote = remote_get(name);
 194         if (remote_is_configured(remote, 1))
 195                 die(_("remote %s already exists."), name);
 196
 197         if (!valid_remote_name(name))
 198                 die(_("'%s' is not a valid remote name"), name);
 199
 200         strbuf_addf(&buf, "remote.%s.url", name);
 201         git_config_set(buf.buf, url);
 202
 203         if (!mirror || mirror & MIRROR_FETCH) {
 204                 strbuf_reset(&buf);
 205                 strbuf_addf(&buf, "remote.%s.fetch", name);
 206                 if (track.nr == 0)
 207                         string_list_append(&track, "*");
 208                 for (i = 0; i < track.nr; i++) {
 209                         add_branch(buf.buf, track.items[i].string,
 210                                    name, mirror, &buf2);
 211                 }
 212         }
 213
 214         if (mirror & MIRROR_PUSH) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "remote.%s.mirror", name);
 217                 git_config_set(buf.buf, "true");
 218         }
 219
 220         if (fetch_tags != TAGS_DEFAULT) {
 221                 strbuf_reset(&buf);
 222                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 223                 git_config_set(buf.buf,
 224                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 225         }
 226
 227         if (fetch && fetch_remote(name))
 228                 return 1;
 229
 230         if (master) {
 231                 strbuf_reset(&buf);
 232                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 233
 234                 strbuf_reset(&buf2);
 235                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 236
 237                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 238                         return error(_("Could not setup master '%s'"), master);
 239         }
 240
 241         strbuf_release(&buf);
 242         strbuf_release(&buf2);
 243         string_list_clear(&track, 0);
 244
 245         return 0;
 246 }
 247
 248 struct branch_info {
 249         char *remote_name;
 250         struct string_list merge;
 251         enum rebase_type rebase;
 252         char *push_remote_name;
 253 };
 254
 255 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
 256
 257 static const char *abbrev_ref(const char *name, const char *prefix)
 258 {
 259         skip_prefix(name, prefix, &name);
 260         return name;
 261 }
 262 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 263
 264 static int config_read_branches(const char *key, const char *value, void *cb)
 265 {
 266         const char *orig_key = key;
 267         char *name;
 268         struct string_list_item *item;
 269         struct branch_info *info;
 270         enum { REMOTE, MERGE, REBASE, PUSH_REMOTE } type;
 271         size_t key_len;
 272
 273         if (!starts_with(key, "branch."))
 274                 return 0;
 275
 276         key += strlen("branch.");
 277         if (strip_suffix(key, ".remote", &key_len))
 278                 type = REMOTE;
 279         else if (strip_suffix(key, ".merge", &key_len))
 280                 type = MERGE;
 281         else if (strip_suffix(key, ".rebase", &key_len))
 282                 type = REBASE;
 283         else if (strip_suffix(key, ".pushremote", &key_len))
 284                 type = PUSH_REMOTE;
 285         else
 286                 return 0;
 287         name = xmemdupz(key, key_len);
 288
 289         item = string_list_insert(&branch_list, name);
 290
 291         if (!item->util)
 292                 item->util = xcalloc(1, sizeof(struct branch_info));
 293         info = item->util;
 294         switch (type) {
 295         case REMOTE:
 296                 if (info->remote_name)
 297                         warning(_("more than one %s"), orig_key);
 298                 info->remote_name = xstrdup(value);
 299                 break;
 300         case MERGE: {
 301                 char *space = strchr(value, ' ');
 302                 value = abbrev_branch(value);
 303                 while (space) {
 304                         char *merge;
 305                         merge = xstrndup(value, space - value);
 306                         string_list_append(&info->merge, merge);
 307                         value = abbrev_branch(space + 1);
 308                         space = strchr(value, ' ');
 309                 }
 310                 string_list_append(&info->merge, xstrdup(value));
 311                 break;
 312         }
 313         case REBASE:
 314                 /*
 315                  * Consider invalid values as false and check the
 316                  * truth value with >= REBASE_TRUE.
 317                  */
 318                 info->rebase = rebase_parse_value(value);
 319                 break;
 320         case PUSH_REMOTE:
 321                 if (info->push_remote_name)
 322                         warning(_("more than one %s"), orig_key);
 323                 info->push_remote_name = xstrdup(value);
 324                 break;
 325         default:
 326                 BUG("unexpected type=%d", type);
 327         }
 328
 329         return 0;
 330 }
 331
 332 static void read_branches(void)
 333 {
 334         if (branch_list.nr)
 335                 return;
 336         git_config(config_read_branches, NULL);
 337 }
 338
 339 struct ref_states {
 340         struct remote *remote;
 341         struct string_list new_refs, stale, tracked, heads, push;
 342         int queried;
 343 };
 344
 345 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 346 {
 347         struct ref *fetch_map = NULL, **tail = &fetch_map;
 348         struct ref *ref, *stale_refs;
 349         int i;
 350
 351         for (i = 0; i < states->remote->fetch.nr; i++)
 352                 if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
 353                         die(_("Could not get fetch map for refspec %s"),
 354                                 states->remote->fetch.raw[i]);
 355
 356         states->new_refs.strdup_strings = 1;
 357         states->tracked.strdup_strings = 1;
 358         states->stale.strdup_strings = 1;
 359         for (ref = fetch_map; ref; ref = ref->next) {
 360                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 361                         string_list_append(&states->new_refs, abbrev_branch(ref->name));
 362                 else
 363                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 364         }
 365         stale_refs = get_stale_heads(&states->remote->fetch, fetch_map);
 366         for (ref = stale_refs; ref; ref = ref->next) {
 367                 struct string_list_item *item =
 368                         string_list_append(&states->stale, abbrev_branch(ref->name));
 369                 item->util = xstrdup(ref->name);
 370         }
 371         free_refs(stale_refs);
 372         free_refs(fetch_map);
 373
 374         string_list_sort(&states->new_refs);
 375         string_list_sort(&states->tracked);
 376         string_list_sort(&states->stale);
 377
 378         return 0;
 379 }
 380
 381 struct push_info {
 382         char *dest;
 383         int forced;
 384         enum {
 385                 PUSH_STATUS_CREATE = 0,
 386                 PUSH_STATUS_DELETE,
 387                 PUSH_STATUS_UPTODATE,
 388                 PUSH_STATUS_FASTFORWARD,
 389                 PUSH_STATUS_OUTOFDATE,
 390                 PUSH_STATUS_NOTQUERIED
 391         } status;
 392 };
 393
 394 static int get_push_ref_states(const struct ref *remote_refs,
 395         struct ref_states *states)
 396 {
 397         struct remote *remote = states->remote;
 398         struct ref *ref, *local_refs, *push_map;
 399         if (remote->mirror)
 400                 return 0;
 401
 402         local_refs = get_local_heads();
 403         push_map = copy_ref_list(remote_refs);
 404
 405         match_push_refs(local_refs, &push_map, &remote->push, MATCH_REFS_NONE);
 406
 407         states->push.strdup_strings = 1;
 408         for (ref = push_map; ref; ref = ref->next) {
 409                 struct string_list_item *item;
 410                 struct push_info *info;
 411
 412                 if (!ref->peer_ref)
 413                         continue;
 414                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 415
 416                 item = string_list_append(&states->push,
 417                                           abbrev_branch(ref->peer_ref->name));
 418                 item->util = xcalloc(1, sizeof(struct push_info));
 419                 info = item->util;
 420                 info->forced = ref->force;
 421                 info->dest = xstrdup(abbrev_branch(ref->name));
 422
 423                 if (is_null_oid(&ref->new_oid)) {
 424                         info->status = PUSH_STATUS_DELETE;
 425                 } else if (oideq(&ref->old_oid, &ref->new_oid))
 426                         info->status = PUSH_STATUS_UPTODATE;
 427                 else if (is_null_oid(&ref->old_oid))
 428                         info->status = PUSH_STATUS_CREATE;
 429                 else if (has_object_file(&ref->old_oid) &&
 430                          ref_newer(&ref->new_oid, &ref->old_oid))
 431                         info->status = PUSH_STATUS_FASTFORWARD;
 432                 else
 433                         info->status = PUSH_STATUS_OUTOFDATE;
 434         }
 435         free_refs(local_refs);
 436         free_refs(push_map);
 437         return 0;
 438 }
 439
 440 static int get_push_ref_states_noquery(struct ref_states *states)
 441 {
 442         int i;
 443         struct remote *remote = states->remote;
 444         struct string_list_item *item;
 445         struct push_info *info;
 446
 447         if (remote->mirror)
 448                 return 0;
 449
 450         states->push.strdup_strings = 1;
 451         if (!remote->push.nr) {
 452                 item = string_list_append(&states->push, _("(matching)"));
 453                 info = item->util = xcalloc(1, sizeof(struct push_info));
 454                 info->status = PUSH_STATUS_NOTQUERIED;
 455                 info->dest = xstrdup(item->string);
 456         }
 457         for (i = 0; i < remote->push.nr; i++) {
 458                 const struct refspec_item *spec = &remote->push.items[i];
 459                 if (spec->matching)
 460                         item = string_list_append(&states->push, _("(matching)"));
 461                 else if (strlen(spec->src))
 462                         item = string_list_append(&states->push, spec->src);
 463                 else
 464                         item = string_list_append(&states->push, _("(delete)"));
 465
 466                 info = item->util = xcalloc(1, sizeof(struct push_info));
 467                 info->forced = spec->force;
 468                 info->status = PUSH_STATUS_NOTQUERIED;
 469                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 470         }
 471         return 0;
 472 }
 473
 474 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 475 {
 476         struct ref *ref, *matches;
 477         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 478         struct refspec_item refspec;
 479
 480         memset(&refspec, 0, sizeof(refspec));
 481         refspec.force = 0;
 482         refspec.pattern = 1;
 483         refspec.src = refspec.dst = "refs/heads/*";
 484         states->heads.strdup_strings = 1;
 485         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 486         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 487                                     fetch_map, 1);
 488         for (ref = matches; ref; ref = ref->next)
 489                 string_list_append(&states->heads, abbrev_branch(ref->name));
 490
 491         free_refs(fetch_map);
 492         free_refs(matches);
 493
 494         return 0;
 495 }
 496
 497 struct known_remote {
 498         struct known_remote *next;
 499         struct remote *remote;
 500 };
 501
 502 struct known_remotes {
 503         struct remote *to_delete;
 504         struct known_remote *list;
 505 };
 506
 507 static int add_known_remote(struct remote *remote, void *cb_data)
 508 {
 509         struct known_remotes *all = cb_data;
 510         struct known_remote *r;
 511
 512         if (!strcmp(all->to_delete->name, remote->name))
 513                 return 0;
 514
 515         r = xmalloc(sizeof(*r));
 516         r->remote = remote;
 517         r->next = all->list;
 518         all->list = r;
 519         return 0;
 520 }
 521
 522 struct branches_for_remote {
 523         struct remote *remote;
 524         struct string_list *branches, *skipped;
 525         struct known_remotes *keep;
 526 };
 527
 528 static int add_branch_for_removal(const char *refname,
 529         const struct object_id *oid, int flags, void *cb_data)
 530 {
 531         struct branches_for_remote *branches = cb_data;
 532         struct refspec_item refspec;
 533         struct known_remote *kr;
 534
 535         memset(&refspec, 0, sizeof(refspec));
 536         refspec.dst = (char *)refname;
 537         if (remote_find_tracking(branches->remote, &refspec))
 538                 return 0;
 539
 540         /* don't delete a branch if another remote also uses it */
 541         for (kr = branches->keep->list; kr; kr = kr->next) {
 542                 memset(&refspec, 0, sizeof(refspec));
 543                 refspec.dst = (char *)refname;
 544                 if (!remote_find_tracking(kr->remote, &refspec))
 545                         return 0;
 546         }
 547
 548         /* don't delete non-remote-tracking refs */
 549         if (!starts_with(refname, "refs/remotes/")) {
 550                 /* advise user how to delete local branches */
 551                 if (starts_with(refname, "refs/heads/"))
 552                         string_list_append(branches->skipped,
 553                                            abbrev_branch(refname));
 554                 /* silently skip over other non-remote refs */
 555                 return 0;
 556         }
 557
 558         string_list_append(branches->branches, refname);
 559
 560         return 0;
 561 }
 562
 563 struct rename_info {
 564         const char *old_name;
 565         const char *new_name;
 566         struct string_list *remote_branches;
 567 };
 568
 569 static int read_remote_branches(const char *refname,
 570         const struct object_id *oid, int flags, void *cb_data)
 571 {
 572         struct rename_info *rename = cb_data;
 573         struct strbuf buf = STRBUF_INIT;
 574         struct string_list_item *item;
 575         int flag;
 576         const char *symref;
 577
 578         strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
 579         if (starts_with(refname, buf.buf)) {
 580                 item = string_list_append(rename->remote_branches, refname);
 581                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 582                                             NULL, &flag);
 583                 if (symref && (flag & REF_ISSYMREF))
 584                         item->util = xstrdup(symref);
 585                 else
 586                         item->util = NULL;
 587         }
 588         strbuf_release(&buf);
 589
 590         return 0;
 591 }
 592
 593 static int migrate_file(struct remote *remote)
 594 {
 595         struct strbuf buf = STRBUF_INIT;
 596         int i;
 597
 598         strbuf_addf(&buf, "remote.%s.url", remote->name);
 599         for (i = 0; i < remote->url_nr; i++)
 600                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 601         strbuf_reset(&buf);
 602         strbuf_addf(&buf, "remote.%s.push", remote->name);
 603         for (i = 0; i < remote->push.raw_nr; i++)
 604                 git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
 605         strbuf_reset(&buf);
 606         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 607         for (i = 0; i < remote->fetch.raw_nr; i++)
 608                 git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
 609         if (remote->origin == REMOTE_REMOTES)
 610                 unlink_or_warn(git_path("remotes/%s", remote->name));
 611         else if (remote->origin == REMOTE_BRANCHES)
 612                 unlink_or_warn(git_path("branches/%s", remote->name));
 613         strbuf_release(&buf);
 614
 615         return 0;
 616 }
 617
 618 struct push_default_info
 619 {
 620         const char *old_name;
 621         enum config_scope scope;
 622         struct strbuf origin;
 623         int linenr;
 624 };
 625
 626 static int config_read_push_default(const char *key, const char *value,
 627         void *cb)
 628 {
 629         struct push_default_info* info = cb;
 630         if (strcmp(key, "remote.pushdefault") ||
 631             !value || strcmp(value, info->old_name))
 632                 return 0;
 633
 634         info->scope = current_config_scope();
 635         strbuf_reset(&info->origin);
 636         strbuf_addstr(&info->origin, current_config_name());
 637         info->linenr = current_config_line();
 638
 639         return 0;
 640 }
 641
 642 static void handle_push_default(const char* old_name, const char* new_name)
 643 {
 644         struct push_default_info push_default = {
 645                 old_name, CONFIG_SCOPE_UNKNOWN, STRBUF_INIT, -1 };
 646         git_config(config_read_push_default, &push_default);
 647         if (push_default.scope >= CONFIG_SCOPE_COMMAND)
 648                 ; /* pass */
 649         else if (push_default.scope >= CONFIG_SCOPE_LOCAL) {
 650                 int result = git_config_set_gently("remote.pushDefault",
 651                                                    new_name);
 652                 if (new_name && result && result != CONFIG_NOTHING_SET)
 653                         die(_("could not set '%s'"), "remote.pushDefault");
 654                 else if (!new_name && result && result != CONFIG_NOTHING_SET)
 655                         die(_("could not unset '%s'"), "remote.pushDefault");
 656         } else if (push_default.scope >= CONFIG_SCOPE_SYSTEM) {
 657                 /* warn */
 658                 warning(_("The %s configuration remote.pushDefault in:\n"
 659                           "\t%s:%d\n"
 660                           "now names the non-existent remote '%s'"),
 661                         config_scope_name(push_default.scope),
 662                         push_default.origin.buf, push_default.linenr,
 663                         old_name);
 664         }
 665 }
 666
 667
 668 static int mv(int argc, const char **argv)
 669 {
 670         struct option options[] = {
 671                 OPT_END()
 672         };
 673         struct remote *oldremote, *newremote;
 674         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 675                 old_remote_context = STRBUF_INIT;
 676         struct string_list remote_branches = STRING_LIST_INIT_DUP;
 677         struct rename_info rename;
 678         int i, refspec_updated = 0;
 679
 680         if (argc != 3)
 681                 usage_with_options(builtin_remote_rename_usage, options);
 682
 683         rename.old_name = argv[1];
 684         rename.new_name = argv[2];
 685         rename.remote_branches = &remote_branches;
 686
 687         oldremote = remote_get(rename.old_name);
 688         if (!remote_is_configured(oldremote, 1))
 689                 die(_("No such remote: '%s'"), rename.old_name);
 690
 691         if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
 692                 return migrate_file(oldremote);
 693
 694         newremote = remote_get(rename.new_name);
 695         if (remote_is_configured(newremote, 1))
 696                 die(_("remote %s already exists."), rename.new_name);
 697
 698         if (!valid_remote_name(rename.new_name))
 699                 die(_("'%s' is not a valid remote name"), rename.new_name);
 700
 701         strbuf_addf(&buf, "remote.%s", rename.old_name);
 702         strbuf_addf(&buf2, "remote.%s", rename.new_name);
 703         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 704                 return error(_("Could not rename config section '%s' to '%s'"),
 705                                 buf.buf, buf2.buf);
 706
 707         strbuf_reset(&buf);
 708         strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 709         git_config_set_multivar(buf.buf, NULL, NULL, 1);
 710         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 711         for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 712                 char *ptr;
 713
 714                 strbuf_reset(&buf2);
 715                 strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
 716                 ptr = strstr(buf2.buf, old_remote_context.buf);
 717                 if (ptr) {
 718                         refspec_updated = 1;
 719                         strbuf_splice(&buf2,
 720                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 721                                       strlen(rename.old_name), rename.new_name,
 722                                       strlen(rename.new_name));
 723                 } else
 724                         warning(_("Not updating non-default fetch refspec\n"
 725                                   "\t%s\n"
 726                                   "\tPlease update the configuration manually if necessary."),
 727                                 buf2.buf);
 728
 729                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 730         }
 731
 732         read_branches();
 733         for (i = 0; i < branch_list.nr; i++) {
 734                 struct string_list_item *item = branch_list.items + i;
 735                 struct branch_info *info = item->util;
 736                 if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
 737                         strbuf_reset(&buf);
 738                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 739                         git_config_set(buf.buf, rename.new_name);
 740                 }
 741                 if (info->push_remote_name && !strcmp(info->push_remote_name, rename.old_name)) {
 742                         strbuf_reset(&buf);
 743                         strbuf_addf(&buf, "branch.%s.pushremote", item->string);
 744                         git_config_set(buf.buf, rename.new_name);
 745                 }
 746         }
 747
 748         if (!refspec_updated)
 749                 return 0;
 750
 751         /*
 752          * First remove symrefs, then rename the rest, finally create
 753          * the new symrefs.
 754          */
 755         for_each_ref(read_remote_branches, &rename);
 756         for (i = 0; i < remote_branches.nr; i++) {
 757                 struct string_list_item *item = remote_branches.items + i;
 758                 int flag = 0;
 759
 760                 read_ref_full(item->string, RESOLVE_REF_READING, NULL, &flag);
 761                 if (!(flag & REF_ISSYMREF))
 762                         continue;
 763                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
 764                         die(_("deleting '%s' failed"), item->string);
 765         }
 766         for (i = 0; i < remote_branches.nr; i++) {
 767                 struct string_list_item *item = remote_branches.items + i;
 768
 769                 if (item->util)
 770                         continue;
 771                 strbuf_reset(&buf);
 772                 strbuf_addstr(&buf, item->string);
 773                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 774                                 rename.new_name, strlen(rename.new_name));
 775                 strbuf_reset(&buf2);
 776                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 777                                 item->string, buf.buf);
 778                 if (rename_ref(item->string, buf.buf, buf2.buf))
 779                         die(_("renaming '%s' failed"), item->string);
 780         }
 781         for (i = 0; i < remote_branches.nr; i++) {
 782                 struct string_list_item *item = remote_branches.items + i;
 783
 784                 if (!item->util)
 785                         continue;
 786                 strbuf_reset(&buf);
 787                 strbuf_addstr(&buf, item->string);
 788                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 789                                 rename.new_name, strlen(rename.new_name));
 790                 strbuf_reset(&buf2);
 791                 strbuf_addstr(&buf2, item->util);
 792                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
 793                                 rename.new_name, strlen(rename.new_name));
 794                 strbuf_reset(&buf3);
 795                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 796                                 item->string, buf.buf);
 797                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 798                         die(_("creating '%s' failed"), buf.buf);
 799         }
 800         string_list_clear(&remote_branches, 1);
 801
 802         handle_push_default(rename.old_name, rename.new_name);
 803
 804         return 0;
 805 }
 806
 807 static int rm(int argc, const char **argv)
 808 {
 809         struct option options[] = {
 810                 OPT_END()
 811         };
 812         struct remote *remote;
 813         struct strbuf buf = STRBUF_INIT;
 814         struct known_remotes known_remotes = { NULL, NULL };
 815         struct string_list branches = STRING_LIST_INIT_DUP;
 816         struct string_list skipped = STRING_LIST_INIT_DUP;
 817         struct branches_for_remote cb_data;
 818         int i, result;
 819
 820         memset(&cb_data, 0, sizeof(cb_data));
 821         cb_data.branches = &branches;
 822         cb_data.skipped = &skipped;
 823         cb_data.keep = &known_remotes;
 824
 825         if (argc != 2)
 826                 usage_with_options(builtin_remote_rm_usage, options);
 827
 828         remote = remote_get(argv[1]);
 829         if (!remote_is_configured(remote, 1))
 830                 die(_("No such remote: '%s'"), argv[1]);
 831
 832         known_remotes.to_delete = remote;
 833         for_each_remote(add_known_remote, &known_remotes);
 834
 835         read_branches();
 836         for (i = 0; i < branch_list.nr; i++) {
 837                 struct string_list_item *item = branch_list.items + i;
 838                 struct branch_info *info = item->util;
 839                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 840                         const char *keys[] = { "remote", "merge", NULL }, **k;
 841                         for (k = keys; *k; k++) {
 842                                 strbuf_reset(&buf);
 843                                 strbuf_addf(&buf, "branch.%s.%s",
 844                                                 item->string, *k);
 845                                 result = git_config_set_gently(buf.buf, NULL);
 846                                 if (result && result != CONFIG_NOTHING_SET)
 847                                         die(_("could not unset '%s'"), buf.buf);
 848                         }
 849                 }
 850                 if (info->push_remote_name && !strcmp(info->push_remote_name, remote->name)) {
 851                         strbuf_reset(&buf);
 852                         strbuf_addf(&buf, "branch.%s.pushremote", item->string);
 853                         result = git_config_set_gently(buf.buf, NULL);
 854                         if (result && result != CONFIG_NOTHING_SET)
 855                                 die(_("could not unset '%s'"), buf.buf);
 856                 }
 857         }
 858
 859         /*
 860          * We cannot just pass a function to for_each_ref() which deletes
 861          * the branches one by one, since for_each_ref() relies on cached
 862          * refs, which are invalidated when deleting a branch.
 863          */
 864         cb_data.remote = remote;
 865         result = for_each_ref(add_branch_for_removal, &cb_data);
 866         strbuf_release(&buf);
 867
 868         if (!result)
 869                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
 870         string_list_clear(&branches, 0);
 871
 872         if (skipped.nr) {
 873                 fprintf_ln(stderr,
 874                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 875                               "to delete it, use:",
 876                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 877                               "to delete them, use:",
 878                               skipped.nr));
 879                 for (i = 0; i < skipped.nr; i++)
 880                         fprintf(stderr, "  git branch -d %s\n",
 881                                 skipped.items[i].string);
 882         }
 883         string_list_clear(&skipped, 0);
 884
 885         if (!result) {
 886                 strbuf_addf(&buf, "remote.%s", remote->name);
 887                 if (git_config_rename_section(buf.buf, NULL) < 1)
 888                         return error(_("Could not remove config section '%s'"), buf.buf);
 889
 890                 handle_push_default(remote->name, NULL);
 891         }
 892
 893         return result;
 894 }
 895
 896 static void clear_push_info(void *util, const char *string)
 897 {
 898         struct push_info *info = util;
 899         free(info->dest);
 900         free(info);
 901 }
 902
 903 static void free_remote_ref_states(struct ref_states *states)
 904 {
 905         string_list_clear(&states->new_refs, 0);
 906         string_list_clear(&states->stale, 1);
 907         string_list_clear(&states->tracked, 0);
 908         string_list_clear(&states->heads, 0);
 909         string_list_clear_func(&states->push, clear_push_info);
 910 }
 911
 912 static int append_ref_to_tracked_list(const char *refname,
 913         const struct object_id *oid, int flags, void *cb_data)
 914 {
 915         struct ref_states *states = cb_data;
 916         struct refspec_item refspec;
 917
 918         if (flags & REF_ISSYMREF)
 919                 return 0;
 920
 921         memset(&refspec, 0, sizeof(refspec));
 922         refspec.dst = (char *)refname;
 923         if (!remote_find_tracking(states->remote, &refspec))
 924                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 925
 926         return 0;
 927 }
 928
 929 static int get_remote_ref_states(const char *name,
 930                                  struct ref_states *states,
 931                                  int query)
 932 {
 933         struct transport *transport;
 934         const struct ref *remote_refs;
 935
 936         states->remote = remote_get(name);
 937         if (!states->remote)
 938                 return error(_("No such remote: '%s'"), name);
 939
 940         read_branches();
 941
 942         if (query) {
 943                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 944                         states->remote->url[0] : NULL);
 945                 remote_refs = transport_get_remote_refs(transport, NULL);
 946                 transport_disconnect(transport);
 947
 948                 states->queried = 1;
 949                 if (query & GET_REF_STATES)
 950                         get_ref_states(remote_refs, states);
 951                 if (query & GET_HEAD_NAMES)
 952                         get_head_names(remote_refs, states);
 953                 if (query & GET_PUSH_REF_STATES)
 954                         get_push_ref_states(remote_refs, states);
 955         } else {
 956                 for_each_ref(append_ref_to_tracked_list, states);
 957                 string_list_sort(&states->tracked);
 958                 get_push_ref_states_noquery(states);
 959         }
 960
 961         return 0;
 962 }
 963
 964 struct show_info {
 965         struct string_list *list;
 966         struct ref_states *states;
 967         int width, width2;
 968         int any_rebase;
 969 };
 970
 971 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 972 {
 973         struct show_info *info = cb_data;
 974         int n = strlen(item->string);
 975         if (n > info->width)
 976                 info->width = n;
 977         string_list_insert(info->list, item->string);
 978         return 0;
 979 }
 980
 981 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 982 {
 983         struct show_info *info = cb_data;
 984         struct ref_states *states = info->states;
 985         const char *name = item->string;
 986
 987         if (states->queried) {
 988                 const char *fmt = "%s";
 989                 const char *arg = "";
 990                 if (string_list_has_string(&states->new_refs, name)) {
 991                         fmt = _(" new (next fetch will store in remotes/%s)");
 992                         arg = states->remote->name;
 993                 } else if (string_list_has_string(&states->tracked, name))
 994                         arg = _(" tracked");
 995                 else if (string_list_has_string(&states->stale, name))
 996                         arg = _(" stale (use 'git remote prune' to remove)");
 997                 else
 998                         arg = _(" ???");
 999                 printf("    %-*s", info->width, name);
1000                 printf(fmt, arg);
1001                 printf("\n");
1002         } else
1003                 printf("    %s\n", name);
1004
1005         return 0;
1006 }
1007
1008 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
1009 {
1010         struct show_info *show_info = cb_data;
1011         struct ref_states *states = show_info->states;
1012         struct branch_info *branch_info = branch_item->util;
1013         struct string_list_item *item;
1014         int n;
1015
1016         if (!branch_info->merge.nr || !branch_info->remote_name ||
1017             strcmp(states->remote->name, branch_info->remote_name))
1018                 return 0;
1019         if ((n = strlen(branch_item->string)) > show_info->width)
1020                 show_info->width = n;
1021         if (branch_info->rebase >= REBASE_TRUE)
1022                 show_info->any_rebase = 1;
1023
1024         item = string_list_insert(show_info->list, branch_item->string);
1025         item->util = branch_info;
1026
1027         return 0;
1028 }
1029
1030 static int show_local_info_item(struct string_list_item *item, void *cb_data)
1031 {
1032         struct show_info *show_info = cb_data;
1033         struct branch_info *branch_info = item->util;
1034         struct string_list *merge = &branch_info->merge;
1035         int width = show_info->width + 4;
1036         int i;
1037
1038         if (branch_info->rebase >= REBASE_TRUE && branch_info->merge.nr > 1) {
1039                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
1040                         item->string);
1041                 return 0;
1042         }
1043
1044         printf("    %-*s ", show_info->width, item->string);
1045         if (branch_info->rebase >= REBASE_TRUE) {
1046                 const char *msg;
1047                 if (branch_info->rebase == REBASE_INTERACTIVE)
1048                         msg = _("rebases interactively onto remote %s");
1049                 else if (branch_info->rebase == REBASE_MERGES)
1050                         msg = _("rebases interactively (with merges) onto "
1051                                 "remote %s");
1052                 else
1053                         msg = _("rebases onto remote %s");
1054                 printf_ln(msg, merge->items[0].string);
1055                 return 0;
1056         } else if (show_info->any_rebase) {
1057                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1058                 width++;
1059         } else {
1060                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1061         }
1062         for (i = 1; i < merge->nr; i++)
1063                 printf(_("%-*s    and with remote %s\n"), width, "",
1064                        merge->items[i].string);
1065
1066         return 0;
1067 }
1068
1069 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1070 {
1071         struct show_info *show_info = cb_data;
1072         struct push_info *push_info = push_item->util;
1073         struct string_list_item *item;
1074         int n;
1075         if ((n = strlen(push_item->string)) > show_info->width)
1076                 show_info->width = n;
1077         if ((n = strlen(push_info->dest)) > show_info->width2)
1078                 show_info->width2 = n;
1079         item = string_list_append(show_info->list, push_item->string);
1080         item->util = push_item->util;
1081         return 0;
1082 }
1083
1084 /*
1085  * Sorting comparison for a string list that has push_info
1086  * structs in its util field
1087  */
1088 static int cmp_string_with_push(const void *va, const void *vb)
1089 {
1090         const struct string_list_item *a = va;
1091         const struct string_list_item *b = vb;
1092         const struct push_info *a_push = a->util;
1093         const struct push_info *b_push = b->util;
1094         int cmp = strcmp(a->string, b->string);
1095         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1096 }
1097
1098 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1099 {
1100         struct show_info *show_info = cb_data;
1101         struct push_info *push_info = item->util;
1102         const char *src = item->string, *status = NULL;
1103
1104         switch (push_info->status) {
1105         case PUSH_STATUS_CREATE:
1106                 status = _("create");
1107                 break;
1108         case PUSH_STATUS_DELETE:
1109                 status = _("delete");
1110                 src = _("(none)");
1111                 break;
1112         case PUSH_STATUS_UPTODATE:
1113                 status = _("up to date");
1114                 break;
1115         case PUSH_STATUS_FASTFORWARD:
1116                 status = _("fast-forwardable");
1117                 break;
1118         case PUSH_STATUS_OUTOFDATE:
1119                 status = _("local out of date");
1120                 break;
1121         case PUSH_STATUS_NOTQUERIED:
1122                 break;
1123         }
1124         if (status) {
1125                 if (push_info->forced)
1126                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1127                                show_info->width2, push_info->dest, status);
1128                 else
1129                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1130                                show_info->width2, push_info->dest, status);
1131         } else {
1132                 if (push_info->forced)
1133                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1134                                push_info->dest);
1135                 else
1136                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1137                                push_info->dest);
1138         }
1139         return 0;
1140 }
1141
1142 static int get_one_entry(struct remote *remote, void *priv)
1143 {
1144         struct string_list *list = priv;
1145         struct strbuf url_buf = STRBUF_INIT;
1146         const char **url;
1147         int i, url_nr;
1148
1149         if (remote->url_nr > 0) {
1150                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1151                 string_list_append(list, remote->name)->util =
1152                                 strbuf_detach(&url_buf, NULL);
1153         } else
1154                 string_list_append(list, remote->name)->util = NULL;
1155         if (remote->pushurl_nr) {
1156                 url = remote->pushurl;
1157                 url_nr = remote->pushurl_nr;
1158         } else {
1159                 url = remote->url;
1160                 url_nr = remote->url_nr;
1161         }
1162         for (i = 0; i < url_nr; i++)
1163         {
1164                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1165                 string_list_append(list, remote->name)->util =
1166                                 strbuf_detach(&url_buf, NULL);
1167         }
1168
1169         return 0;
1170 }
1171
1172 static int show_all(void)
1173 {
1174         struct string_list list = STRING_LIST_INIT_NODUP;
1175         int result;
1176
1177         list.strdup_strings = 1;
1178         result = for_each_remote(get_one_entry, &list);
1179
1180         if (!result) {
1181                 int i;
1182
1183                 string_list_sort(&list);
1184                 for (i = 0; i < list.nr; i++) {
1185                         struct string_list_item *item = list.items + i;
1186                         if (verbose)
1187                                 printf("%s\t%s\n", item->string,
1188                                         item->util ? (const char *)item->util : "");
1189                         else {
1190                                 if (i && !strcmp((item - 1)->string, item->string))
1191                                         continue;
1192                                 printf("%s\n", item->string);
1193                         }
1194                 }
1195         }
1196         string_list_clear(&list, 1);
1197         return result;
1198 }
1199
1200 static int show(int argc, const char **argv)
1201 {
1202         int no_query = 0, result = 0, query_flag = 0;
1203         struct option options[] = {
1204                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1205                 OPT_END()
1206         };
1207         struct ref_states states;
1208         struct string_list info_list = STRING_LIST_INIT_NODUP;
1209         struct show_info info;
1210
1211         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1212                              0);
1213
1214         if (argc < 1)
1215                 return show_all();
1216
1217         if (!no_query)
1218                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1219
1220         memset(&states, 0, sizeof(states));
1221         memset(&info, 0, sizeof(info));
1222         info.states = &states;
1223         info.list = &info_list;
1224         for (; argc; argc--, argv++) {
1225                 int i;
1226                 const char **url;
1227                 int url_nr;
1228
1229                 get_remote_ref_states(*argv, &states, query_flag);
1230
1231                 printf_ln(_("* remote %s"), *argv);
1232                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1233                        states.remote->url[0] : _("(no URL)"));
1234                 if (states.remote->pushurl_nr) {
1235                         url = states.remote->pushurl;
1236                         url_nr = states.remote->pushurl_nr;
1237                 } else {
1238                         url = states.remote->url;
1239                         url_nr = states.remote->url_nr;
1240                 }
1241                 for (i = 0; i < url_nr; i++)
1242                         /*
1243                          * TRANSLATORS: the colon ':' should align
1244                          * with the one in " Fetch URL: %s"
1245                          * translation.
1246                          */
1247                         printf_ln(_("  Push  URL: %s"), url[i]);
1248                 if (!i)
1249                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1250                 if (no_query)
1251                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1252                 else if (!states.heads.nr)
1253                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1254                 else if (states.heads.nr == 1)
1255                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1256                 else {
1257                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1258                                  " may be one of the following):\n"));
1259                         for (i = 0; i < states.heads.nr; i++)
1260                                 printf("    %s\n", states.heads.items[i].string);
1261                 }
1262
1263                 /* remote branch info */
1264                 info.width = 0;
1265                 for_each_string_list(&states.new_refs, add_remote_to_show_info, &info);
1266                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1267                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1268                 if (info.list->nr)
1269                         printf_ln(Q_("  Remote branch:%s",
1270                                      "  Remote branches:%s",
1271                                      info.list->nr),
1272                                   no_query ? _(" (status not queried)") : "");
1273                 for_each_string_list(info.list, show_remote_info_item, &info);
1274                 string_list_clear(info.list, 0);
1275
1276                 /* git pull info */
1277                 info.width = 0;
1278                 info.any_rebase = 0;
1279                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1280                 if (info.list->nr)
1281                         printf_ln(Q_("  Local branch configured for 'git pull':",
1282                                      "  Local branches configured for 'git pull':",
1283                                      info.list->nr));
1284                 for_each_string_list(info.list, show_local_info_item, &info);
1285                 string_list_clear(info.list, 0);
1286
1287                 /* git push info */
1288                 if (states.remote->mirror)
1289                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1290
1291                 info.width = info.width2 = 0;
1292                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1293                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1294                 if (info.list->nr)
1295                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1296                                      "  Local refs configured for 'git push'%s:",
1297                                      info.list->nr),
1298                                   no_query ? _(" (status not queried)") : "");
1299                 for_each_string_list(info.list, show_push_info_item, &info);
1300                 string_list_clear(info.list, 0);
1301
1302                 free_remote_ref_states(&states);
1303         }
1304
1305         return result;
1306 }
1307
1308 static int set_head(int argc, const char **argv)
1309 {
1310         int i, opt_a = 0, opt_d = 0, result = 0;
1311         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1312         char *head_name = NULL;
1313
1314         struct option options[] = {
1315                 OPT_BOOL('a', "auto", &opt_a,
1316                          N_("set refs/remotes/<name>/HEAD according to remote")),
1317                 OPT_BOOL('d', "delete", &opt_d,
1318                          N_("delete refs/remotes/<name>/HEAD")),
1319                 OPT_END()
1320         };
1321         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1322                              0);
1323         if (argc)
1324                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1325
1326         if (!opt_a && !opt_d && argc == 2) {
1327                 head_name = xstrdup(argv[1]);
1328         } else if (opt_a && !opt_d && argc == 1) {
1329                 struct ref_states states;
1330                 memset(&states, 0, sizeof(states));
1331                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1332                 if (!states.heads.nr)
1333                         result |= error(_("Cannot determine remote HEAD"));
1334                 else if (states.heads.nr > 1) {
1335                         result |= error(_("Multiple remote HEAD branches. "
1336                                           "Please choose one explicitly with:"));
1337                         for (i = 0; i < states.heads.nr; i++)
1338                                 fprintf(stderr, "  git remote set-head %s %s\n",
1339                                         argv[0], states.heads.items[i].string);
1340                 } else
1341                         head_name = xstrdup(states.heads.items[0].string);
1342                 free_remote_ref_states(&states);
1343         } else if (opt_d && !opt_a && argc == 1) {
1344                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1345                         result |= error(_("Could not delete %s"), buf.buf);
1346         } else
1347                 usage_with_options(builtin_remote_sethead_usage, options);
1348
1349         if (head_name) {
1350                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1351                 /* make sure it's valid */
1352                 if (!ref_exists(buf2.buf))
1353                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1354                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1355                         result |= error(_("Could not setup %s"), buf.buf);
1356                 else if (opt_a)
1357                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1358                 free(head_name);
1359         }
1360
1361         strbuf_release(&buf);
1362         strbuf_release(&buf2);
1363         return result;
1364 }
1365
1366 static int prune_remote(const char *remote, int dry_run)
1367 {
1368         int result = 0;
1369         struct ref_states states;
1370         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1371         struct string_list_item *item;
1372         const char *dangling_msg = dry_run
1373                 ? _(" %s will become dangling!")
1374                 : _(" %s has become dangling!");
1375
1376         memset(&states, 0, sizeof(states));
1377         get_remote_ref_states(remote, &states, GET_REF_STATES);
1378
1379         if (!states.stale.nr) {
1380                 free_remote_ref_states(&states);
1381                 return 0;
1382         }
1383
1384         printf_ln(_("Pruning %s"), remote);
1385         printf_ln(_("URL: %s"),
1386                   states.remote->url_nr
1387                   ? states.remote->url[0]
1388                   : _("(no URL)"));
1389
1390         for_each_string_list_item(item, &states.stale)
1391                 string_list_append(&refs_to_prune, item->util);
1392         string_list_sort(&refs_to_prune);
1393
1394         if (!dry_run)
1395                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1396
1397         for_each_string_list_item(item, &states.stale) {
1398                 const char *refname = item->util;
1399
1400                 if (dry_run)
1401                         printf_ln(_(" * [would prune] %s"),
1402                                abbrev_ref(refname, "refs/remotes/"));
1403                 else
1404                         printf_ln(_(" * [pruned] %s"),
1405                                abbrev_ref(refname, "refs/remotes/"));
1406         }
1407
1408         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1409
1410         string_list_clear(&refs_to_prune, 0);
1411         free_remote_ref_states(&states);
1412         return result;
1413 }
1414
1415 static int prune(int argc, const char **argv)
1416 {
1417         int dry_run = 0, result = 0;
1418         struct option options[] = {
1419                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1420                 OPT_END()
1421         };
1422
1423         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1424                              0);
1425
1426         if (argc < 1)
1427                 usage_with_options(builtin_remote_prune_usage, options);
1428
1429         for (; argc; argc--, argv++)
1430                 result |= prune_remote(*argv, dry_run);
1431
1432         return result;
1433 }
1434
1435 static int get_remote_default(const char *key, const char *value, void *priv)
1436 {
1437         if (strcmp(key, "remotes.default") == 0) {
1438                 int *found = priv;
1439                 *found = 1;
1440         }
1441         return 0;
1442 }
1443
1444 static int update(int argc, const char **argv)
1445 {
1446         int i, prune = -1;
1447         struct option options[] = {
1448                 OPT_BOOL('p', "prune", &prune,
1449                          N_("prune remotes after fetching")),
1450                 OPT_END()
1451         };
1452         struct strvec fetch_argv = STRVEC_INIT;
1453         int default_defined = 0;
1454         int retval;
1455
1456         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1457                              PARSE_OPT_KEEP_ARGV0);
1458
1459         strvec_push(&fetch_argv, "fetch");
1460
1461         if (prune != -1)
1462                 strvec_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1463         if (verbose)
1464                 strvec_push(&fetch_argv, "-v");
1465         strvec_push(&fetch_argv, "--multiple");
1466         if (argc < 2)
1467                 strvec_push(&fetch_argv, "default");
1468         for (i = 1; i < argc; i++)
1469                 strvec_push(&fetch_argv, argv[i]);
1470
1471         if (strcmp(fetch_argv.v[fetch_argv.nr-1], "default") == 0) {
1472                 git_config(get_remote_default, &default_defined);
1473                 if (!default_defined) {
1474                         strvec_pop(&fetch_argv);
1475                         strvec_push(&fetch_argv, "--all");
1476                 }
1477         }
1478
1479         retval = run_command_v_opt(fetch_argv.v, RUN_GIT_CMD);
1480         strvec_clear(&fetch_argv);
1481         return retval;
1482 }
1483
1484 static int remove_all_fetch_refspecs(const char *key)
1485 {
1486         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1487 }
1488
1489 static void add_branches(struct remote *remote, const char **branches,
1490                          const char *key)
1491 {
1492         const char *remotename = remote->name;
1493         int mirror = remote->mirror;
1494         struct strbuf refspec = STRBUF_INIT;
1495
1496         for (; *branches; branches++)
1497                 add_branch(key, *branches, remotename, mirror, &refspec);
1498
1499         strbuf_release(&refspec);
1500 }
1501
1502 static int set_remote_branches(const char *remotename, const char **branches,
1503                                 int add_mode)
1504 {
1505         struct strbuf key = STRBUF_INIT;
1506         struct remote *remote;
1507
1508         strbuf_addf(&key, "remote.%s.fetch", remotename);
1509
1510         remote = remote_get(remotename);
1511         if (!remote_is_configured(remote, 1))
1512                 die(_("No such remote '%s'"), remotename);
1513
1514         if (!add_mode && remove_all_fetch_refspecs(key.buf)) {
1515                 strbuf_release(&key);
1516                 return 1;
1517         }
1518         add_branches(remote, branches, key.buf);
1519
1520         strbuf_release(&key);
1521         return 0;
1522 }
1523
1524 static int set_branches(int argc, const char **argv)
1525 {
1526         int add_mode = 0;
1527         struct option options[] = {
1528                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1529                 OPT_END()
1530         };
1531
1532         argc = parse_options(argc, argv, NULL, options,
1533                              builtin_remote_setbranches_usage, 0);
1534         if (argc == 0) {
1535                 error(_("no remote specified"));
1536                 usage_with_options(builtin_remote_setbranches_usage, options);
1537         }
1538         argv[argc] = NULL;
1539
1540         return set_remote_branches(argv[0], argv + 1, add_mode);
1541 }
1542
1543 static int get_url(int argc, const char **argv)
1544 {
1545         int i, push_mode = 0, all_mode = 0;
1546         const char *remotename = NULL;
1547         struct remote *remote;
1548         const char **url;
1549         int url_nr;
1550         struct option options[] = {
1551                 OPT_BOOL('\0', "push", &push_mode,
1552                          N_("query push URLs rather than fetch URLs")),
1553                 OPT_BOOL('\0', "all", &all_mode,
1554                          N_("return all URLs")),
1555                 OPT_END()
1556         };
1557         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1558
1559         if (argc != 1)
1560                 usage_with_options(builtin_remote_geturl_usage, options);
1561
1562         remotename = argv[0];
1563
1564         remote = remote_get(remotename);
1565         if (!remote_is_configured(remote, 1))
1566                 die(_("No such remote '%s'"), remotename);
1567
1568         url_nr = 0;
1569         if (push_mode) {
1570                 url = remote->pushurl;
1571                 url_nr = remote->pushurl_nr;
1572         }
1573         /* else fetch mode */
1574
1575         /* Use the fetch URL when no push URLs were found or requested. */
1576         if (!url_nr) {
1577                 url = remote->url;
1578                 url_nr = remote->url_nr;
1579         }
1580
1581         if (!url_nr)
1582                 die(_("no URLs configured for remote '%s'"), remotename);
1583
1584         if (all_mode) {
1585                 for (i = 0; i < url_nr; i++)
1586                         printf_ln("%s", url[i]);
1587         } else {
1588                 printf_ln("%s", *url);
1589         }
1590
1591         return 0;
1592 }
1593
1594 static int set_url(int argc, const char **argv)
1595 {
1596         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1597         int matches = 0, negative_matches = 0;
1598         const char *remotename = NULL;
1599         const char *newurl = NULL;
1600         const char *oldurl = NULL;
1601         struct remote *remote;
1602         regex_t old_regex;
1603         const char **urlset;
1604         int urlset_nr;
1605         struct strbuf name_buf = STRBUF_INIT;
1606         struct option options[] = {
1607                 OPT_BOOL('\0', "push", &push_mode,
1608                          N_("manipulate push URLs")),
1609                 OPT_BOOL('\0', "add", &add_mode,
1610                          N_("add URL")),
1611                 OPT_BOOL('\0', "delete", &delete_mode,
1612                             N_("delete URLs")),
1613                 OPT_END()
1614         };
1615         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1616                              PARSE_OPT_KEEP_ARGV0);
1617
1618         if (add_mode && delete_mode)
1619                 die(_("--add --delete doesn't make sense"));
1620
1621         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1622                 usage_with_options(builtin_remote_seturl_usage, options);
1623
1624         remotename = argv[1];
1625         newurl = argv[2];
1626         if (argc > 3)
1627                 oldurl = argv[3];
1628
1629         if (delete_mode)
1630                 oldurl = newurl;
1631
1632         remote = remote_get(remotename);
1633         if (!remote_is_configured(remote, 1))
1634                 die(_("No such remote '%s'"), remotename);
1635
1636         if (push_mode) {
1637                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1638                 urlset = remote->pushurl;
1639                 urlset_nr = remote->pushurl_nr;
1640         } else {
1641                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1642                 urlset = remote->url;
1643                 urlset_nr = remote->url_nr;
1644         }
1645
1646         /* Special cases that add new entry. */
1647         if ((!oldurl && !delete_mode) || add_mode) {
1648                 if (add_mode)
1649                         git_config_set_multivar(name_buf.buf, newurl,
1650                                                        "^$", 0);
1651                 else
1652                         git_config_set(name_buf.buf, newurl);
1653                 goto out;
1654         }
1655
1656         /* Old URL specified. Demand that one matches. */
1657         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1658                 die(_("Invalid old URL pattern: %s"), oldurl);
1659
1660         for (i = 0; i < urlset_nr; i++)
1661                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1662                         matches++;
1663                 else
1664                         negative_matches++;
1665         if (!delete_mode && !matches)
1666                 die(_("No such URL found: %s"), oldurl);
1667         if (delete_mode && !negative_matches && !push_mode)
1668                 die(_("Will not delete all non-push URLs"));
1669
1670         regfree(&old_regex);
1671
1672         if (!delete_mode)
1673                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1674         else
1675                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1676 out:
1677         strbuf_release(&name_buf);
1678         return 0;
1679 }
1680
1681 int cmd_remote(int argc, const char **argv, const char *prefix)
1682 {
1683         struct option options[] = {
1684                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1685                 OPT_END()
1686         };
1687         int result;
1688
1689         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1690                 PARSE_OPT_STOP_AT_NON_OPTION);
1691
1692         if (argc < 1)
1693                 result = show_all();
1694         else if (!strcmp(argv[0], "add"))
1695                 result = add(argc, argv);
1696         else if (!strcmp(argv[0], "rename"))
1697                 result = mv(argc, argv);
1698         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1699                 result = rm(argc, argv);
1700         else if (!strcmp(argv[0], "set-head"))
1701                 result = set_head(argc, argv);
1702         else if (!strcmp(argv[0], "set-branches"))
1703                 result = set_branches(argc, argv);
1704         else if (!strcmp(argv[0], "get-url"))
1705                 result = get_url(argc, argv);
1706         else if (!strcmp(argv[0], "set-url"))
1707                 result = set_url(argc, argv);
1708         else if (!strcmp(argv[0], "show"))
1709                 result = show(argc, argv);
1710         else if (!strcmp(argv[0], "prune"))
1711                 result = prune(argc, argv);
1712         else if (!strcmp(argv[0], "update"))
1713                 result = update(argc, argv);
1714         else {
1715                 error(_("Unknown subcommand: %s"), argv[0]);
1716                 usage_with_options(builtin_remote_usage, options);
1717         }
1718
1719         return result ? 1 : 0;
1720 }