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                 error(_("remote %s already exists."), name);
 196                 exit(3);
 197         }
 198
 199         if (!valid_remote_name(name))
 200                 die(_("'%s' is not a valid remote name"), name);
 201
 202         strbuf_addf(&buf, "remote.%s.url", name);
 203         git_config_set(buf.buf, url);
 204
 205         if (!mirror || mirror & MIRROR_FETCH) {
 206                 strbuf_reset(&buf);
 207                 strbuf_addf(&buf, "remote.%s.fetch", name);
 208                 if (track.nr == 0)
 209                         string_list_append(&track, "*");
 210                 for (i = 0; i < track.nr; i++) {
 211                         add_branch(buf.buf, track.items[i].string,
 212                                    name, mirror, &buf2);
 213                 }
 214         }
 215
 216         if (mirror & MIRROR_PUSH) {
 217                 strbuf_reset(&buf);
 218                 strbuf_addf(&buf, "remote.%s.mirror", name);
 219                 git_config_set(buf.buf, "true");
 220         }
 221
 222         if (fetch_tags != TAGS_DEFAULT) {
 223                 strbuf_reset(&buf);
 224                 strbuf_addf(&buf, "remote.%s.tagOpt", name);
 225                 git_config_set(buf.buf,
 226                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 227         }
 228
 229         if (fetch && fetch_remote(name))
 230                 return 1;
 231
 232         if (master) {
 233                 strbuf_reset(&buf);
 234                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 235
 236                 strbuf_reset(&buf2);
 237                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 238
 239                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 240                         return error(_("Could not setup master '%s'"), master);
 241         }
 242
 243         strbuf_release(&buf);
 244         strbuf_release(&buf2);
 245         string_list_clear(&track, 0);
 246
 247         return 0;
 248 }
 249
 250 struct branch_info {
 251         char *remote_name;
 252         struct string_list merge;
 253         enum rebase_type rebase;
 254         char *push_remote_name;
 255 };
 256
 257 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
 258
 259 static const char *abbrev_ref(const char *name, const char *prefix)
 260 {
 261         skip_prefix(name, prefix, &name);
 262         return name;
 263 }
 264 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 265
 266 static int config_read_branches(const char *key, const char *value, void *cb)
 267 {
 268         const char *orig_key = key;
 269         char *name;
 270         struct string_list_item *item;
 271         struct branch_info *info;
 272         enum { REMOTE, MERGE, REBASE, PUSH_REMOTE } type;
 273         size_t key_len;
 274
 275         if (!starts_with(key, "branch."))
 276                 return 0;
 277
 278         key += strlen("branch.");
 279         if (strip_suffix(key, ".remote", &key_len))
 280                 type = REMOTE;
 281         else if (strip_suffix(key, ".merge", &key_len))
 282                 type = MERGE;
 283         else if (strip_suffix(key, ".rebase", &key_len))
 284                 type = REBASE;
 285         else if (strip_suffix(key, ".pushremote", &key_len))
 286                 type = PUSH_REMOTE;
 287         else
 288                 return 0;
 289         name = xmemdupz(key, key_len);
 290
 291         item = string_list_insert(&branch_list, name);
 292
 293         if (!item->util)
 294                 item->util = xcalloc(1, sizeof(struct branch_info));
 295         info = item->util;
 296         switch (type) {
 297         case REMOTE:
 298                 if (info->remote_name)
 299                         warning(_("more than one %s"), orig_key);
 300                 info->remote_name = xstrdup(value);
 301                 break;
 302         case MERGE: {
 303                 char *space = strchr(value, ' ');
 304                 value = abbrev_branch(value);
 305                 while (space) {
 306                         char *merge;
 307                         merge = xstrndup(value, space - value);
 308                         string_list_append(&info->merge, merge);
 309                         value = abbrev_branch(space + 1);
 310                         space = strchr(value, ' ');
 311                 }
 312                 string_list_append(&info->merge, xstrdup(value));
 313                 break;
 314         }
 315         case REBASE:
 316                 /*
 317                  * Consider invalid values as false and check the
 318                  * truth value with >= REBASE_TRUE.
 319                  */
 320                 info->rebase = rebase_parse_value(value);
 321                 if (info->rebase == REBASE_INVALID)
 322                         warning(_("unhandled branch.%s.rebase=%s; assuming "
 323                                   "'true'"), name, value);
 324                 break;
 325         case PUSH_REMOTE:
 326                 if (info->push_remote_name)
 327                         warning(_("more than one %s"), orig_key);
 328                 info->push_remote_name = xstrdup(value);
 329                 break;
 330         default:
 331                 BUG("unexpected type=%d", type);
 332         }
 333
 334         return 0;
 335 }
 336
 337 static void read_branches(void)
 338 {
 339         if (branch_list.nr)
 340                 return;
 341         git_config(config_read_branches, NULL);
 342 }
 343
 344 struct ref_states {
 345         struct remote *remote;
 346         struct string_list new_refs, stale, tracked, heads, push;
 347         int queried;
 348 };
 349
 350 #define REF_STATES_INIT { \
 351         .new_refs = STRING_LIST_INIT_DUP, \
 352         .stale = STRING_LIST_INIT_DUP, \
 353         .tracked = STRING_LIST_INIT_DUP, \
 354         .heads = STRING_LIST_INIT_DUP, \
 355         .push = STRING_LIST_INIT_DUP, \
 356 }
 357
 358 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 359 {
 360         struct ref *fetch_map = NULL, **tail = &fetch_map;
 361         struct ref *ref, *stale_refs;
 362         int i;
 363
 364         for (i = 0; i < states->remote->fetch.nr; i++)
 365                 if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
 366                         die(_("Could not get fetch map for refspec %s"),
 367                                 states->remote->fetch.raw[i]);
 368
 369         for (ref = fetch_map; ref; ref = ref->next) {
 370                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 371                         string_list_append(&states->new_refs, abbrev_branch(ref->name));
 372                 else
 373                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 374         }
 375         stale_refs = get_stale_heads(&states->remote->fetch, fetch_map);
 376         for (ref = stale_refs; ref; ref = ref->next) {
 377                 struct string_list_item *item =
 378                         string_list_append(&states->stale, abbrev_branch(ref->name));
 379                 item->util = xstrdup(ref->name);
 380         }
 381         free_refs(stale_refs);
 382         free_refs(fetch_map);
 383
 384         string_list_sort(&states->new_refs);
 385         string_list_sort(&states->tracked);
 386         string_list_sort(&states->stale);
 387
 388         return 0;
 389 }
 390
 391 struct push_info {
 392         char *dest;
 393         int forced;
 394         enum {
 395                 PUSH_STATUS_CREATE = 0,
 396                 PUSH_STATUS_DELETE,
 397                 PUSH_STATUS_UPTODATE,
 398                 PUSH_STATUS_FASTFORWARD,
 399                 PUSH_STATUS_OUTOFDATE,
 400                 PUSH_STATUS_NOTQUERIED
 401         } status;
 402 };
 403
 404 static int get_push_ref_states(const struct ref *remote_refs,
 405         struct ref_states *states)
 406 {
 407         struct remote *remote = states->remote;
 408         struct ref *ref, *local_refs, *push_map;
 409         if (remote->mirror)
 410                 return 0;
 411
 412         local_refs = get_local_heads();
 413         push_map = copy_ref_list(remote_refs);
 414
 415         match_push_refs(local_refs, &push_map, &remote->push, MATCH_REFS_NONE);
 416
 417         for (ref = push_map; ref; ref = ref->next) {
 418                 struct string_list_item *item;
 419                 struct push_info *info;
 420
 421                 if (!ref->peer_ref)
 422                         continue;
 423                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 424
 425                 item = string_list_append(&states->push,
 426                                           abbrev_branch(ref->peer_ref->name));
 427                 item->util = xcalloc(1, sizeof(struct push_info));
 428                 info = item->util;
 429                 info->forced = ref->force;
 430                 info->dest = xstrdup(abbrev_branch(ref->name));
 431
 432                 if (is_null_oid(&ref->new_oid)) {
 433                         info->status = PUSH_STATUS_DELETE;
 434                 } else if (oideq(&ref->old_oid, &ref->new_oid))
 435                         info->status = PUSH_STATUS_UPTODATE;
 436                 else if (is_null_oid(&ref->old_oid))
 437                         info->status = PUSH_STATUS_CREATE;
 438                 else if (has_object_file(&ref->old_oid) &&
 439                          ref_newer(&ref->new_oid, &ref->old_oid))
 440                         info->status = PUSH_STATUS_FASTFORWARD;
 441                 else
 442                         info->status = PUSH_STATUS_OUTOFDATE;
 443         }
 444         free_refs(local_refs);
 445         free_refs(push_map);
 446         return 0;
 447 }
 448
 449 static int get_push_ref_states_noquery(struct ref_states *states)
 450 {
 451         int i;
 452         struct remote *remote = states->remote;
 453         struct string_list_item *item;
 454         struct push_info *info;
 455
 456         if (remote->mirror)
 457                 return 0;
 458
 459         if (!remote->push.nr) {
 460                 item = string_list_append(&states->push, _("(matching)"));
 461                 info = item->util = xcalloc(1, sizeof(struct push_info));
 462                 info->status = PUSH_STATUS_NOTQUERIED;
 463                 info->dest = xstrdup(item->string);
 464         }
 465         for (i = 0; i < remote->push.nr; i++) {
 466                 const struct refspec_item *spec = &remote->push.items[i];
 467                 if (spec->matching)
 468                         item = string_list_append(&states->push, _("(matching)"));
 469                 else if (strlen(spec->src))
 470                         item = string_list_append(&states->push, spec->src);
 471                 else
 472                         item = string_list_append(&states->push, _("(delete)"));
 473
 474                 info = item->util = xcalloc(1, sizeof(struct push_info));
 475                 info->forced = spec->force;
 476                 info->status = PUSH_STATUS_NOTQUERIED;
 477                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 478         }
 479         return 0;
 480 }
 481
 482 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 483 {
 484         struct ref *ref, *matches;
 485         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 486         struct refspec_item refspec;
 487
 488         memset(&refspec, 0, sizeof(refspec));
 489         refspec.force = 0;
 490         refspec.pattern = 1;
 491         refspec.src = refspec.dst = "refs/heads/*";
 492         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 493         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 494                                     fetch_map, 1);
 495         for (ref = matches; ref; ref = ref->next)
 496                 string_list_append(&states->heads, abbrev_branch(ref->name));
 497
 498         free_refs(fetch_map);
 499         free_refs(matches);
 500
 501         return 0;
 502 }
 503
 504 struct known_remote {
 505         struct known_remote *next;
 506         struct remote *remote;
 507 };
 508
 509 struct known_remotes {
 510         struct remote *to_delete;
 511         struct known_remote *list;
 512 };
 513
 514 static int add_known_remote(struct remote *remote, void *cb_data)
 515 {
 516         struct known_remotes *all = cb_data;
 517         struct known_remote *r;
 518
 519         if (!strcmp(all->to_delete->name, remote->name))
 520                 return 0;
 521
 522         r = xmalloc(sizeof(*r));
 523         r->remote = remote;
 524         r->next = all->list;
 525         all->list = r;
 526         return 0;
 527 }
 528
 529 struct branches_for_remote {
 530         struct remote *remote;
 531         struct string_list *branches, *skipped;
 532         struct known_remotes *keep;
 533 };
 534
 535 static int add_branch_for_removal(const char *refname,
 536         const struct object_id *oid, int flags, void *cb_data)
 537 {
 538         struct branches_for_remote *branches = cb_data;
 539         struct refspec_item refspec;
 540         struct known_remote *kr;
 541
 542         memset(&refspec, 0, sizeof(refspec));
 543         refspec.dst = (char *)refname;
 544         if (remote_find_tracking(branches->remote, &refspec))
 545                 return 0;
 546
 547         /* don't delete a branch if another remote also uses it */
 548         for (kr = branches->keep->list; kr; kr = kr->next) {
 549                 memset(&refspec, 0, sizeof(refspec));
 550                 refspec.dst = (char *)refname;
 551                 if (!remote_find_tracking(kr->remote, &refspec))
 552                         return 0;
 553         }
 554
 555         /* don't delete non-remote-tracking refs */
 556         if (!starts_with(refname, "refs/remotes/")) {
 557                 /* advise user how to delete local branches */
 558                 if (starts_with(refname, "refs/heads/"))
 559                         string_list_append(branches->skipped,
 560                                            abbrev_branch(refname));
 561                 /* silently skip over other non-remote refs */
 562                 return 0;
 563         }
 564
 565         string_list_append(branches->branches, refname);
 566
 567         return 0;
 568 }
 569
 570 struct rename_info {
 571         const char *old_name;
 572         const char *new_name;
 573         struct string_list *remote_branches;
 574 };
 575
 576 static int read_remote_branches(const char *refname,
 577         const struct object_id *oid, int flags, void *cb_data)
 578 {
 579         struct rename_info *rename = cb_data;
 580         struct strbuf buf = STRBUF_INIT;
 581         struct string_list_item *item;
 582         int flag;
 583         const char *symref;
 584
 585         strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
 586         if (starts_with(refname, buf.buf)) {
 587                 item = string_list_append(rename->remote_branches, refname);
 588                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 589                                             NULL, &flag);
 590                 if (symref && (flag & REF_ISSYMREF))
 591                         item->util = xstrdup(symref);
 592                 else
 593                         item->util = NULL;
 594         }
 595         strbuf_release(&buf);
 596
 597         return 0;
 598 }
 599
 600 static int migrate_file(struct remote *remote)
 601 {
 602         struct strbuf buf = STRBUF_INIT;
 603         int i;
 604
 605         strbuf_addf(&buf, "remote.%s.url", remote->name);
 606         for (i = 0; i < remote->url_nr; i++)
 607                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 608         strbuf_reset(&buf);
 609         strbuf_addf(&buf, "remote.%s.push", remote->name);
 610         for (i = 0; i < remote->push.raw_nr; i++)
 611                 git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
 612         strbuf_reset(&buf);
 613         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 614         for (i = 0; i < remote->fetch.raw_nr; i++)
 615                 git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
 616         if (remote->origin == REMOTE_REMOTES)
 617                 unlink_or_warn(git_path("remotes/%s", remote->name));
 618         else if (remote->origin == REMOTE_BRANCHES)
 619                 unlink_or_warn(git_path("branches/%s", remote->name));
 620         strbuf_release(&buf);
 621
 622         return 0;
 623 }
 624
 625 struct push_default_info
 626 {
 627         const char *old_name;
 628         enum config_scope scope;
 629         struct strbuf origin;
 630         int linenr;
 631 };
 632
 633 static int config_read_push_default(const char *key, const char *value,
 634         void *cb)
 635 {
 636         struct push_default_info* info = cb;
 637         if (strcmp(key, "remote.pushdefault") ||
 638             !value || strcmp(value, info->old_name))
 639                 return 0;
 640
 641         info->scope = current_config_scope();
 642         strbuf_reset(&info->origin);
 643         strbuf_addstr(&info->origin, current_config_name());
 644         info->linenr = current_config_line();
 645
 646         return 0;
 647 }
 648
 649 static void handle_push_default(const char* old_name, const char* new_name)
 650 {
 651         struct push_default_info push_default = {
 652                 old_name, CONFIG_SCOPE_UNKNOWN, STRBUF_INIT, -1 };
 653         git_config(config_read_push_default, &push_default);
 654         if (push_default.scope >= CONFIG_SCOPE_COMMAND)
 655                 ; /* pass */
 656         else if (push_default.scope >= CONFIG_SCOPE_LOCAL) {
 657                 int result = git_config_set_gently("remote.pushDefault",
 658                                                    new_name);
 659                 if (new_name && result && result != CONFIG_NOTHING_SET)
 660                         die(_("could not set '%s'"), "remote.pushDefault");
 661                 else if (!new_name && result && result != CONFIG_NOTHING_SET)
 662                         die(_("could not unset '%s'"), "remote.pushDefault");
 663         } else if (push_default.scope >= CONFIG_SCOPE_SYSTEM) {
 664                 /* warn */
 665                 warning(_("The %s configuration remote.pushDefault in:\n"
 666                           "\t%s:%d\n"
 667                           "now names the non-existent remote '%s'"),
 668                         config_scope_name(push_default.scope),
 669                         push_default.origin.buf, push_default.linenr,
 670                         old_name);
 671         }
 672 }
 673
 674
 675 static int mv(int argc, const char **argv)
 676 {
 677         struct option options[] = {
 678                 OPT_END()
 679         };
 680         struct remote *oldremote, *newremote;
 681         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 682                 old_remote_context = STRBUF_INIT;
 683         struct string_list remote_branches = STRING_LIST_INIT_DUP;
 684         struct rename_info rename;
 685         int i, refspec_updated = 0;
 686
 687         if (argc != 3)
 688                 usage_with_options(builtin_remote_rename_usage, options);
 689
 690         rename.old_name = argv[1];
 691         rename.new_name = argv[2];
 692         rename.remote_branches = &remote_branches;
 693
 694         oldremote = remote_get(rename.old_name);
 695         if (!remote_is_configured(oldremote, 1)) {
 696                 error(_("No such remote: '%s'"), rename.old_name);
 697                 exit(2);
 698         }
 699
 700         if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
 701                 return migrate_file(oldremote);
 702
 703         newremote = remote_get(rename.new_name);
 704         if (remote_is_configured(newremote, 1)) {
 705                 error(_("remote %s already exists."), rename.new_name);
 706                 exit(3);
 707         }
 708
 709         if (!valid_remote_name(rename.new_name))
 710                 die(_("'%s' is not a valid remote name"), rename.new_name);
 711
 712         strbuf_addf(&buf, "remote.%s", rename.old_name);
 713         strbuf_addf(&buf2, "remote.%s", rename.new_name);
 714         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 715                 return error(_("Could not rename config section '%s' to '%s'"),
 716                                 buf.buf, buf2.buf);
 717
 718         strbuf_reset(&buf);
 719         strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 720         git_config_set_multivar(buf.buf, NULL, NULL, CONFIG_FLAGS_MULTI_REPLACE);
 721         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 722         for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 723                 char *ptr;
 724
 725                 strbuf_reset(&buf2);
 726                 strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
 727                 ptr = strstr(buf2.buf, old_remote_context.buf);
 728                 if (ptr) {
 729                         refspec_updated = 1;
 730                         strbuf_splice(&buf2,
 731                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 732                                       strlen(rename.old_name), rename.new_name,
 733                                       strlen(rename.new_name));
 734                 } else
 735                         warning(_("Not updating non-default fetch refspec\n"
 736                                   "\t%s\n"
 737                                   "\tPlease update the configuration manually if necessary."),
 738                                 buf2.buf);
 739
 740                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 741         }
 742
 743         read_branches();
 744         for (i = 0; i < branch_list.nr; i++) {
 745                 struct string_list_item *item = branch_list.items + i;
 746                 struct branch_info *info = item->util;
 747                 if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
 748                         strbuf_reset(&buf);
 749                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 750                         git_config_set(buf.buf, rename.new_name);
 751                 }
 752                 if (info->push_remote_name && !strcmp(info->push_remote_name, rename.old_name)) {
 753                         strbuf_reset(&buf);
 754                         strbuf_addf(&buf, "branch.%s.pushRemote", item->string);
 755                         git_config_set(buf.buf, rename.new_name);
 756                 }
 757         }
 758
 759         if (!refspec_updated)
 760                 return 0;
 761
 762         /*
 763          * First remove symrefs, then rename the rest, finally create
 764          * the new symrefs.
 765          */
 766         for_each_ref(read_remote_branches, &rename);
 767         for (i = 0; i < remote_branches.nr; i++) {
 768                 struct string_list_item *item = remote_branches.items + i;
 769                 int flag = 0;
 770
 771                 read_ref_full(item->string, RESOLVE_REF_READING, NULL, &flag);
 772                 if (!(flag & REF_ISSYMREF))
 773                         continue;
 774                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
 775                         die(_("deleting '%s' failed"), item->string);
 776         }
 777         for (i = 0; i < remote_branches.nr; i++) {
 778                 struct string_list_item *item = remote_branches.items + i;
 779
 780                 if (item->util)
 781                         continue;
 782                 strbuf_reset(&buf);
 783                 strbuf_addstr(&buf, item->string);
 784                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 785                                 rename.new_name, strlen(rename.new_name));
 786                 strbuf_reset(&buf2);
 787                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 788                                 item->string, buf.buf);
 789                 if (rename_ref(item->string, buf.buf, buf2.buf))
 790                         die(_("renaming '%s' failed"), item->string);
 791         }
 792         for (i = 0; i < remote_branches.nr; i++) {
 793                 struct string_list_item *item = remote_branches.items + i;
 794
 795                 if (!item->util)
 796                         continue;
 797                 strbuf_reset(&buf);
 798                 strbuf_addstr(&buf, item->string);
 799                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 800                                 rename.new_name, strlen(rename.new_name));
 801                 strbuf_reset(&buf2);
 802                 strbuf_addstr(&buf2, item->util);
 803                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
 804                                 rename.new_name, strlen(rename.new_name));
 805                 strbuf_reset(&buf3);
 806                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 807                                 item->string, buf.buf);
 808                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 809                         die(_("creating '%s' failed"), buf.buf);
 810         }
 811         string_list_clear(&remote_branches, 1);
 812
 813         handle_push_default(rename.old_name, rename.new_name);
 814
 815         return 0;
 816 }
 817
 818 static int rm(int argc, const char **argv)
 819 {
 820         struct option options[] = {
 821                 OPT_END()
 822         };
 823         struct remote *remote;
 824         struct strbuf buf = STRBUF_INIT;
 825         struct known_remotes known_remotes = { NULL, NULL };
 826         struct string_list branches = STRING_LIST_INIT_DUP;
 827         struct string_list skipped = STRING_LIST_INIT_DUP;
 828         struct branches_for_remote cb_data;
 829         int i, result;
 830
 831         memset(&cb_data, 0, sizeof(cb_data));
 832         cb_data.branches = &branches;
 833         cb_data.skipped = &skipped;
 834         cb_data.keep = &known_remotes;
 835
 836         if (argc != 2)
 837                 usage_with_options(builtin_remote_rm_usage, options);
 838
 839         remote = remote_get(argv[1]);
 840         if (!remote_is_configured(remote, 1)) {
 841                 error(_("No such remote: '%s'"), argv[1]);
 842                 exit(2);
 843         }
 844
 845         known_remotes.to_delete = remote;
 846         for_each_remote(add_known_remote, &known_remotes);
 847
 848         read_branches();
 849         for (i = 0; i < branch_list.nr; i++) {
 850                 struct string_list_item *item = branch_list.items + i;
 851                 struct branch_info *info = item->util;
 852                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 853                         const char *keys[] = { "remote", "merge", NULL }, **k;
 854                         for (k = keys; *k; k++) {
 855                                 strbuf_reset(&buf);
 856                                 strbuf_addf(&buf, "branch.%s.%s",
 857                                                 item->string, *k);
 858                                 result = git_config_set_gently(buf.buf, NULL);
 859                                 if (result && result != CONFIG_NOTHING_SET)
 860                                         die(_("could not unset '%s'"), buf.buf);
 861                         }
 862                 }
 863                 if (info->push_remote_name && !strcmp(info->push_remote_name, remote->name)) {
 864                         strbuf_reset(&buf);
 865                         strbuf_addf(&buf, "branch.%s.pushremote", item->string);
 866                         result = git_config_set_gently(buf.buf, NULL);
 867                         if (result && result != CONFIG_NOTHING_SET)
 868                                 die(_("could not unset '%s'"), buf.buf);
 869                 }
 870         }
 871
 872         /*
 873          * We cannot just pass a function to for_each_ref() which deletes
 874          * the branches one by one, since for_each_ref() relies on cached
 875          * refs, which are invalidated when deleting a branch.
 876          */
 877         cb_data.remote = remote;
 878         result = for_each_ref(add_branch_for_removal, &cb_data);
 879         strbuf_release(&buf);
 880
 881         if (!result)
 882                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
 883         string_list_clear(&branches, 0);
 884
 885         if (skipped.nr) {
 886                 fprintf_ln(stderr,
 887                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 888                               "to delete it, use:",
 889                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 890                               "to delete them, use:",
 891                               skipped.nr));
 892                 for (i = 0; i < skipped.nr; i++)
 893                         fprintf(stderr, "  git branch -d %s\n",
 894                                 skipped.items[i].string);
 895         }
 896         string_list_clear(&skipped, 0);
 897
 898         if (!result) {
 899                 strbuf_addf(&buf, "remote.%s", remote->name);
 900                 if (git_config_rename_section(buf.buf, NULL) < 1)
 901                         return error(_("Could not remove config section '%s'"), buf.buf);
 902
 903                 handle_push_default(remote->name, NULL);
 904         }
 905
 906         return result;
 907 }
 908
 909 static void clear_push_info(void *util, const char *string)
 910 {
 911         struct push_info *info = util;
 912         free(info->dest);
 913         free(info);
 914 }
 915
 916 static void free_remote_ref_states(struct ref_states *states)
 917 {
 918         string_list_clear(&states->new_refs, 0);
 919         string_list_clear(&states->stale, 1);
 920         string_list_clear(&states->tracked, 0);
 921         string_list_clear(&states->heads, 0);
 922         string_list_clear_func(&states->push, clear_push_info);
 923 }
 924
 925 static int append_ref_to_tracked_list(const char *refname,
 926         const struct object_id *oid, int flags, void *cb_data)
 927 {
 928         struct ref_states *states = cb_data;
 929         struct refspec_item refspec;
 930
 931         if (flags & REF_ISSYMREF)
 932                 return 0;
 933
 934         memset(&refspec, 0, sizeof(refspec));
 935         refspec.dst = (char *)refname;
 936         if (!remote_find_tracking(states->remote, &refspec))
 937                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 938
 939         return 0;
 940 }
 941
 942 static int get_remote_ref_states(const char *name,
 943                                  struct ref_states *states,
 944                                  int query)
 945 {
 946         states->remote = remote_get(name);
 947         if (!states->remote)
 948                 return error(_("No such remote: '%s'"), name);
 949
 950         read_branches();
 951
 952         if (query) {
 953                 struct transport *transport;
 954                 const struct ref *remote_refs;
 955
 956                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 957                         states->remote->url[0] : NULL);
 958                 remote_refs = transport_get_remote_refs(transport, NULL);
 959
 960                 states->queried = 1;
 961                 if (query & GET_REF_STATES)
 962                         get_ref_states(remote_refs, states);
 963                 if (query & GET_HEAD_NAMES)
 964                         get_head_names(remote_refs, states);
 965                 if (query & GET_PUSH_REF_STATES)
 966                         get_push_ref_states(remote_refs, states);
 967                 transport_disconnect(transport);
 968         } else {
 969                 for_each_ref(append_ref_to_tracked_list, states);
 970                 string_list_sort(&states->tracked);
 971                 get_push_ref_states_noquery(states);
 972         }
 973
 974         return 0;
 975 }
 976
 977 struct show_info {
 978         struct string_list list;
 979         struct ref_states states;
 980         int width, width2;
 981         int any_rebase;
 982 };
 983
 984 #define SHOW_INFO_INIT { \
 985         .list = STRING_LIST_INIT_DUP, \
 986         .states = REF_STATES_INIT, \
 987 }
 988
 989 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 990 {
 991         struct show_info *info = cb_data;
 992         int n = strlen(item->string);
 993         if (n > info->width)
 994                 info->width = n;
 995         string_list_insert(&info->list, item->string);
 996         return 0;
 997 }
 998
 999 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
1000 {
1001         struct show_info *info = cb_data;
1002         struct ref_states *states = &info->states;
1003         const char *name = item->string;
1004
1005         if (states->queried) {
1006                 const char *fmt = "%s";
1007                 const char *arg = "";
1008                 if (string_list_has_string(&states->new_refs, name)) {
1009                         fmt = _(" new (next fetch will store in remotes/%s)");
1010                         arg = states->remote->name;
1011                 } else if (string_list_has_string(&states->tracked, name))
1012                         arg = _(" tracked");
1013                 else if (string_list_has_string(&states->stale, name))
1014                         arg = _(" stale (use 'git remote prune' to remove)");
1015                 else
1016                         arg = _(" ???");
1017                 printf("    %-*s", info->width, name);
1018                 printf(fmt, arg);
1019                 printf("\n");
1020         } else
1021                 printf("    %s\n", name);
1022
1023         return 0;
1024 }
1025
1026 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
1027 {
1028         struct show_info *show_info = cb_data;
1029         struct ref_states *states = &show_info->states;
1030         struct branch_info *branch_info = branch_item->util;
1031         struct string_list_item *item;
1032         int n;
1033
1034         if (!branch_info->merge.nr || !branch_info->remote_name ||
1035             strcmp(states->remote->name, branch_info->remote_name))
1036                 return 0;
1037         if ((n = strlen(branch_item->string)) > show_info->width)
1038                 show_info->width = n;
1039         if (branch_info->rebase >= REBASE_TRUE)
1040                 show_info->any_rebase = 1;
1041
1042         item = string_list_insert(&show_info->list, branch_item->string);
1043         item->util = branch_info;
1044
1045         return 0;
1046 }
1047
1048 static int show_local_info_item(struct string_list_item *item, void *cb_data)
1049 {
1050         struct show_info *show_info = cb_data;
1051         struct branch_info *branch_info = item->util;
1052         struct string_list *merge = &branch_info->merge;
1053         int width = show_info->width + 4;
1054         int i;
1055
1056         if (branch_info->rebase >= REBASE_TRUE && branch_info->merge.nr > 1) {
1057                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
1058                         item->string);
1059                 return 0;
1060         }
1061
1062         printf("    %-*s ", show_info->width, item->string);
1063         if (branch_info->rebase >= REBASE_TRUE) {
1064                 const char *msg;
1065                 if (branch_info->rebase == REBASE_INTERACTIVE)
1066                         msg = _("rebases interactively onto remote %s");
1067                 else if (branch_info->rebase == REBASE_MERGES)
1068                         msg = _("rebases interactively (with merges) onto "
1069                                 "remote %s");
1070                 else
1071                         msg = _("rebases onto remote %s");
1072                 printf_ln(msg, merge->items[0].string);
1073                 return 0;
1074         } else if (show_info->any_rebase) {
1075                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1076                 width++;
1077         } else {
1078                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1079         }
1080         for (i = 1; i < merge->nr; i++)
1081                 printf(_("%-*s    and with remote %s\n"), width, "",
1082                        merge->items[i].string);
1083
1084         return 0;
1085 }
1086
1087 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1088 {
1089         struct show_info *show_info = cb_data;
1090         struct push_info *push_info = push_item->util;
1091         struct string_list_item *item;
1092         int n;
1093         if ((n = strlen(push_item->string)) > show_info->width)
1094                 show_info->width = n;
1095         if ((n = strlen(push_info->dest)) > show_info->width2)
1096                 show_info->width2 = n;
1097         item = string_list_append(&show_info->list, push_item->string);
1098         item->util = push_item->util;
1099         return 0;
1100 }
1101
1102 /*
1103  * Sorting comparison for a string list that has push_info
1104  * structs in its util field
1105  */
1106 static int cmp_string_with_push(const void *va, const void *vb)
1107 {
1108         const struct string_list_item *a = va;
1109         const struct string_list_item *b = vb;
1110         const struct push_info *a_push = a->util;
1111         const struct push_info *b_push = b->util;
1112         int cmp = strcmp(a->string, b->string);
1113         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1114 }
1115
1116 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1117 {
1118         struct show_info *show_info = cb_data;
1119         struct push_info *push_info = item->util;
1120         const char *src = item->string, *status = NULL;
1121
1122         switch (push_info->status) {
1123         case PUSH_STATUS_CREATE:
1124                 status = _("create");
1125                 break;
1126         case PUSH_STATUS_DELETE:
1127                 status = _("delete");
1128                 src = _("(none)");
1129                 break;
1130         case PUSH_STATUS_UPTODATE:
1131                 status = _("up to date");
1132                 break;
1133         case PUSH_STATUS_FASTFORWARD:
1134                 status = _("fast-forwardable");
1135                 break;
1136         case PUSH_STATUS_OUTOFDATE:
1137                 status = _("local out of date");
1138                 break;
1139         case PUSH_STATUS_NOTQUERIED:
1140                 break;
1141         }
1142         if (status) {
1143                 if (push_info->forced)
1144                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1145                                show_info->width2, push_info->dest, status);
1146                 else
1147                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1148                                show_info->width2, push_info->dest, status);
1149         } else {
1150                 if (push_info->forced)
1151                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1152                                push_info->dest);
1153                 else
1154                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1155                                push_info->dest);
1156         }
1157         return 0;
1158 }
1159
1160 static int get_one_entry(struct remote *remote, void *priv)
1161 {
1162         struct string_list *list = priv;
1163         struct strbuf url_buf = STRBUF_INIT;
1164         const char **url;
1165         int i, url_nr;
1166
1167         if (remote->url_nr > 0) {
1168                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1169                 string_list_append(list, remote->name)->util =
1170                                 strbuf_detach(&url_buf, NULL);
1171         } else
1172                 string_list_append(list, remote->name)->util = NULL;
1173         if (remote->pushurl_nr) {
1174                 url = remote->pushurl;
1175                 url_nr = remote->pushurl_nr;
1176         } else {
1177                 url = remote->url;
1178                 url_nr = remote->url_nr;
1179         }
1180         for (i = 0; i < url_nr; i++)
1181         {
1182                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1183                 string_list_append(list, remote->name)->util =
1184                                 strbuf_detach(&url_buf, NULL);
1185         }
1186
1187         return 0;
1188 }
1189
1190 static int show_all(void)
1191 {
1192         struct string_list list = STRING_LIST_INIT_NODUP;
1193         int result;
1194
1195         list.strdup_strings = 1;
1196         result = for_each_remote(get_one_entry, &list);
1197
1198         if (!result) {
1199                 int i;
1200
1201                 string_list_sort(&list);
1202                 for (i = 0; i < list.nr; i++) {
1203                         struct string_list_item *item = list.items + i;
1204                         if (verbose)
1205                                 printf("%s\t%s\n", item->string,
1206                                         item->util ? (const char *)item->util : "");
1207                         else {
1208                                 if (i && !strcmp((item - 1)->string, item->string))
1209                                         continue;
1210                                 printf("%s\n", item->string);
1211                         }
1212                 }
1213         }
1214         string_list_clear(&list, 1);
1215         return result;
1216 }
1217
1218 static int show(int argc, const char **argv)
1219 {
1220         int no_query = 0, result = 0, query_flag = 0;
1221         struct option options[] = {
1222                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1223                 OPT_END()
1224         };
1225         struct show_info info = SHOW_INFO_INIT;
1226
1227         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1228                              0);
1229
1230         if (argc < 1)
1231                 return show_all();
1232
1233         if (!no_query)
1234                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1235
1236         for (; argc; argc--, argv++) {
1237                 int i;
1238                 const char **url;
1239                 int url_nr;
1240
1241                 get_remote_ref_states(*argv, &info.states, query_flag);
1242
1243                 printf_ln(_("* remote %s"), *argv);
1244                 printf_ln(_("  Fetch URL: %s"), info.states.remote->url_nr > 0 ?
1245                        info.states.remote->url[0] : _("(no URL)"));
1246                 if (info.states.remote->pushurl_nr) {
1247                         url = info.states.remote->pushurl;
1248                         url_nr = info.states.remote->pushurl_nr;
1249                 } else {
1250                         url = info.states.remote->url;
1251                         url_nr = info.states.remote->url_nr;
1252                 }
1253                 for (i = 0; i < url_nr; i++)
1254                         /*
1255                          * TRANSLATORS: the colon ':' should align
1256                          * with the one in " Fetch URL: %s"
1257                          * translation.
1258                          */
1259                         printf_ln(_("  Push  URL: %s"), url[i]);
1260                 if (!i)
1261                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1262                 if (no_query)
1263                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1264                 else if (!info.states.heads.nr)
1265                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1266                 else if (info.states.heads.nr == 1)
1267                         printf_ln(_("  HEAD branch: %s"), info.states.heads.items[0].string);
1268                 else {
1269                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1270                                  " may be one of the following):\n"));
1271                         for (i = 0; i < info.states.heads.nr; i++)
1272                                 printf("    %s\n", info.states.heads.items[i].string);
1273                 }
1274
1275                 /* remote branch info */
1276                 info.width = 0;
1277                 for_each_string_list(&info.states.new_refs, add_remote_to_show_info, &info);
1278                 for_each_string_list(&info.states.tracked, add_remote_to_show_info, &info);
1279                 for_each_string_list(&info.states.stale, add_remote_to_show_info, &info);
1280                 if (info.list.nr)
1281                         printf_ln(Q_("  Remote branch:%s",
1282                                      "  Remote branches:%s",
1283                                      info.list.nr),
1284                                   no_query ? _(" (status not queried)") : "");
1285                 for_each_string_list(&info.list, show_remote_info_item, &info);
1286                 string_list_clear(&info.list, 0);
1287
1288                 /* git pull info */
1289                 info.width = 0;
1290                 info.any_rebase = 0;
1291                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1292                 if (info.list.nr)
1293                         printf_ln(Q_("  Local branch configured for 'git pull':",
1294                                      "  Local branches configured for 'git pull':",
1295                                      info.list.nr));
1296                 for_each_string_list(&info.list, show_local_info_item, &info);
1297                 string_list_clear(&info.list, 0);
1298
1299                 /* git push info */
1300                 if (info.states.remote->mirror)
1301                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1302
1303                 info.width = info.width2 = 0;
1304                 for_each_string_list(&info.states.push, add_push_to_show_info, &info);
1305                 QSORT(info.list.items, info.list.nr, cmp_string_with_push);
1306                 if (info.list.nr)
1307                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1308                                      "  Local refs configured for 'git push'%s:",
1309                                      info.list.nr),
1310                                   no_query ? _(" (status not queried)") : "");
1311                 for_each_string_list(&info.list, show_push_info_item, &info);
1312                 string_list_clear(&info.list, 0);
1313
1314                 free_remote_ref_states(&info.states);
1315         }
1316
1317         return result;
1318 }
1319
1320 static int set_head(int argc, const char **argv)
1321 {
1322         int i, opt_a = 0, opt_d = 0, result = 0;
1323         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1324         char *head_name = NULL;
1325
1326         struct option options[] = {
1327                 OPT_BOOL('a', "auto", &opt_a,
1328                          N_("set refs/remotes/<name>/HEAD according to remote")),
1329                 OPT_BOOL('d', "delete", &opt_d,
1330                          N_("delete refs/remotes/<name>/HEAD")),
1331                 OPT_END()
1332         };
1333         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1334                              0);
1335         if (argc)
1336                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1337
1338         if (!opt_a && !opt_d && argc == 2) {
1339                 head_name = xstrdup(argv[1]);
1340         } else if (opt_a && !opt_d && argc == 1) {
1341                 struct ref_states states = REF_STATES_INIT;
1342                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1343                 if (!states.heads.nr)
1344                         result |= error(_("Cannot determine remote HEAD"));
1345                 else if (states.heads.nr > 1) {
1346                         result |= error(_("Multiple remote HEAD branches. "
1347                                           "Please choose one explicitly with:"));
1348                         for (i = 0; i < states.heads.nr; i++)
1349                                 fprintf(stderr, "  git remote set-head %s %s\n",
1350                                         argv[0], states.heads.items[i].string);
1351                 } else
1352                         head_name = xstrdup(states.heads.items[0].string);
1353                 free_remote_ref_states(&states);
1354         } else if (opt_d && !opt_a && argc == 1) {
1355                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1356                         result |= error(_("Could not delete %s"), buf.buf);
1357         } else
1358                 usage_with_options(builtin_remote_sethead_usage, options);
1359
1360         if (head_name) {
1361                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1362                 /* make sure it's valid */
1363                 if (!ref_exists(buf2.buf))
1364                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1365                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1366                         result |= error(_("Could not setup %s"), buf.buf);
1367                 else if (opt_a)
1368                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1369                 free(head_name);
1370         }
1371
1372         strbuf_release(&buf);
1373         strbuf_release(&buf2);
1374         return result;
1375 }
1376
1377 static int prune_remote(const char *remote, int dry_run)
1378 {
1379         int result = 0;
1380         struct ref_states states = REF_STATES_INIT;
1381         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1382         struct string_list_item *item;
1383         const char *dangling_msg = dry_run
1384                 ? _(" %s will become dangling!")
1385                 : _(" %s has become dangling!");
1386
1387         get_remote_ref_states(remote, &states, GET_REF_STATES);
1388
1389         if (!states.stale.nr) {
1390                 free_remote_ref_states(&states);
1391                 return 0;
1392         }
1393
1394         printf_ln(_("Pruning %s"), remote);
1395         printf_ln(_("URL: %s"),
1396                   states.remote->url_nr
1397                   ? states.remote->url[0]
1398                   : _("(no URL)"));
1399
1400         for_each_string_list_item(item, &states.stale)
1401                 string_list_append(&refs_to_prune, item->util);
1402         string_list_sort(&refs_to_prune);
1403
1404         if (!dry_run)
1405                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1406
1407         for_each_string_list_item(item, &states.stale) {
1408                 const char *refname = item->util;
1409
1410                 if (dry_run)
1411                         printf_ln(_(" * [would prune] %s"),
1412                                abbrev_ref(refname, "refs/remotes/"));
1413                 else
1414                         printf_ln(_(" * [pruned] %s"),
1415                                abbrev_ref(refname, "refs/remotes/"));
1416         }
1417
1418         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1419
1420         string_list_clear(&refs_to_prune, 0);
1421         free_remote_ref_states(&states);
1422         return result;
1423 }
1424
1425 static int prune(int argc, const char **argv)
1426 {
1427         int dry_run = 0, result = 0;
1428         struct option options[] = {
1429                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1430                 OPT_END()
1431         };
1432
1433         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1434                              0);
1435
1436         if (argc < 1)
1437                 usage_with_options(builtin_remote_prune_usage, options);
1438
1439         for (; argc; argc--, argv++)
1440                 result |= prune_remote(*argv, dry_run);
1441
1442         return result;
1443 }
1444
1445 static int get_remote_default(const char *key, const char *value, void *priv)
1446 {
1447         if (strcmp(key, "remotes.default") == 0) {
1448                 int *found = priv;
1449                 *found = 1;
1450         }
1451         return 0;
1452 }
1453
1454 static int update(int argc, const char **argv)
1455 {
1456         int i, prune = -1;
1457         struct option options[] = {
1458                 OPT_BOOL('p', "prune", &prune,
1459                          N_("prune remotes after fetching")),
1460                 OPT_END()
1461         };
1462         struct strvec fetch_argv = STRVEC_INIT;
1463         int default_defined = 0;
1464         int retval;
1465
1466         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1467                              PARSE_OPT_KEEP_ARGV0);
1468
1469         strvec_push(&fetch_argv, "fetch");
1470
1471         if (prune != -1)
1472                 strvec_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1473         if (verbose)
1474                 strvec_push(&fetch_argv, "-v");
1475         strvec_push(&fetch_argv, "--multiple");
1476         if (argc < 2)
1477                 strvec_push(&fetch_argv, "default");
1478         for (i = 1; i < argc; i++)
1479                 strvec_push(&fetch_argv, argv[i]);
1480
1481         if (strcmp(fetch_argv.v[fetch_argv.nr-1], "default") == 0) {
1482                 git_config(get_remote_default, &default_defined);
1483                 if (!default_defined) {
1484                         strvec_pop(&fetch_argv);
1485                         strvec_push(&fetch_argv, "--all");
1486                 }
1487         }
1488
1489         retval = run_command_v_opt(fetch_argv.v, RUN_GIT_CMD);
1490         strvec_clear(&fetch_argv);
1491         return retval;
1492 }
1493
1494 static int remove_all_fetch_refspecs(const char *key)
1495 {
1496         return git_config_set_multivar_gently(key, NULL, NULL,
1497                                               CONFIG_FLAGS_MULTI_REPLACE);
1498 }
1499
1500 static void add_branches(struct remote *remote, const char **branches,
1501                          const char *key)
1502 {
1503         const char *remotename = remote->name;
1504         int mirror = remote->mirror;
1505         struct strbuf refspec = STRBUF_INIT;
1506
1507         for (; *branches; branches++)
1508                 add_branch(key, *branches, remotename, mirror, &refspec);
1509
1510         strbuf_release(&refspec);
1511 }
1512
1513 static int set_remote_branches(const char *remotename, const char **branches,
1514                                 int add_mode)
1515 {
1516         struct strbuf key = STRBUF_INIT;
1517         struct remote *remote;
1518
1519         strbuf_addf(&key, "remote.%s.fetch", remotename);
1520
1521         remote = remote_get(remotename);
1522         if (!remote_is_configured(remote, 1)) {
1523                 error(_("No such remote '%s'"), remotename);
1524                 exit(2);
1525         }
1526
1527         if (!add_mode && remove_all_fetch_refspecs(key.buf)) {
1528                 strbuf_release(&key);
1529                 return 1;
1530         }
1531         add_branches(remote, branches, key.buf);
1532
1533         strbuf_release(&key);
1534         return 0;
1535 }
1536
1537 static int set_branches(int argc, const char **argv)
1538 {
1539         int add_mode = 0;
1540         struct option options[] = {
1541                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1542                 OPT_END()
1543         };
1544
1545         argc = parse_options(argc, argv, NULL, options,
1546                              builtin_remote_setbranches_usage, 0);
1547         if (argc == 0) {
1548                 error(_("no remote specified"));
1549                 usage_with_options(builtin_remote_setbranches_usage, options);
1550         }
1551         argv[argc] = NULL;
1552
1553         return set_remote_branches(argv[0], argv + 1, add_mode);
1554 }
1555
1556 static int get_url(int argc, const char **argv)
1557 {
1558         int i, push_mode = 0, all_mode = 0;
1559         const char *remotename = NULL;
1560         struct remote *remote;
1561         const char **url;
1562         int url_nr;
1563         struct option options[] = {
1564                 OPT_BOOL('\0', "push", &push_mode,
1565                          N_("query push URLs rather than fetch URLs")),
1566                 OPT_BOOL('\0', "all", &all_mode,
1567                          N_("return all URLs")),
1568                 OPT_END()
1569         };
1570         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1571
1572         if (argc != 1)
1573                 usage_with_options(builtin_remote_geturl_usage, options);
1574
1575         remotename = argv[0];
1576
1577         remote = remote_get(remotename);
1578         if (!remote_is_configured(remote, 1)) {
1579                 error(_("No such remote '%s'"), remotename);
1580                 exit(2);
1581         }
1582
1583         url_nr = 0;
1584         if (push_mode) {
1585                 url = remote->pushurl;
1586                 url_nr = remote->pushurl_nr;
1587         }
1588         /* else fetch mode */
1589
1590         /* Use the fetch URL when no push URLs were found or requested. */
1591         if (!url_nr) {
1592                 url = remote->url;
1593                 url_nr = remote->url_nr;
1594         }
1595
1596         if (!url_nr)
1597                 die(_("no URLs configured for remote '%s'"), remotename);
1598
1599         if (all_mode) {
1600                 for (i = 0; i < url_nr; i++)
1601                         printf_ln("%s", url[i]);
1602         } else {
1603                 printf_ln("%s", *url);
1604         }
1605
1606         return 0;
1607 }
1608
1609 static int set_url(int argc, const char **argv)
1610 {
1611         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1612         int matches = 0, negative_matches = 0;
1613         const char *remotename = NULL;
1614         const char *newurl = NULL;
1615         const char *oldurl = NULL;
1616         struct remote *remote;
1617         regex_t old_regex;
1618         const char **urlset;
1619         int urlset_nr;
1620         struct strbuf name_buf = STRBUF_INIT;
1621         struct option options[] = {
1622                 OPT_BOOL('\0', "push", &push_mode,
1623                          N_("manipulate push URLs")),
1624                 OPT_BOOL('\0', "add", &add_mode,
1625                          N_("add URL")),
1626                 OPT_BOOL('\0', "delete", &delete_mode,
1627                             N_("delete URLs")),
1628                 OPT_END()
1629         };
1630         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1631                              PARSE_OPT_KEEP_ARGV0);
1632
1633         if (add_mode && delete_mode)
1634                 die(_("--add --delete doesn't make sense"));
1635
1636         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1637                 usage_with_options(builtin_remote_seturl_usage, options);
1638
1639         remotename = argv[1];
1640         newurl = argv[2];
1641         if (argc > 3)
1642                 oldurl = argv[3];
1643
1644         if (delete_mode)
1645                 oldurl = newurl;
1646
1647         remote = remote_get(remotename);
1648         if (!remote_is_configured(remote, 1)) {
1649                 error(_("No such remote '%s'"), remotename);
1650                 exit(2);
1651         }
1652
1653         if (push_mode) {
1654                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1655                 urlset = remote->pushurl;
1656                 urlset_nr = remote->pushurl_nr;
1657         } else {
1658                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1659                 urlset = remote->url;
1660                 urlset_nr = remote->url_nr;
1661         }
1662
1663         /* Special cases that add new entry. */
1664         if ((!oldurl && !delete_mode) || add_mode) {
1665                 if (add_mode)
1666                         git_config_set_multivar(name_buf.buf, newurl,
1667                                                        "^$", 0);
1668                 else
1669                         git_config_set(name_buf.buf, newurl);
1670                 goto out;
1671         }
1672
1673         /* Old URL specified. Demand that one matches. */
1674         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1675                 die(_("Invalid old URL pattern: %s"), oldurl);
1676
1677         for (i = 0; i < urlset_nr; i++)
1678                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1679                         matches++;
1680                 else
1681                         negative_matches++;
1682         if (!delete_mode && !matches)
1683                 die(_("No such URL found: %s"), oldurl);
1684         if (delete_mode && !negative_matches && !push_mode)
1685                 die(_("Will not delete all non-push URLs"));
1686
1687         regfree(&old_regex);
1688
1689         if (!delete_mode)
1690                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1691         else
1692                 git_config_set_multivar(name_buf.buf, NULL, oldurl,
1693                                         CONFIG_FLAGS_MULTI_REPLACE);
1694 out:
1695         strbuf_release(&name_buf);
1696         return 0;
1697 }
1698
1699 int cmd_remote(int argc, const char **argv, const char *prefix)
1700 {
1701         struct option options[] = {
1702                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1703                 OPT_END()
1704         };
1705         int result;
1706
1707         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1708                 PARSE_OPT_STOP_AT_NON_OPTION);
1709
1710         if (argc < 1)
1711                 result = show_all();
1712         else if (!strcmp(argv[0], "add"))
1713                 result = add(argc, argv);
1714         else if (!strcmp(argv[0], "rename"))
1715                 result = mv(argc, argv);
1716         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1717                 result = rm(argc, argv);
1718         else if (!strcmp(argv[0], "set-head"))
1719                 result = set_head(argc, argv);
1720         else if (!strcmp(argv[0], "set-branches"))
1721                 result = set_branches(argc, argv);
1722         else if (!strcmp(argv[0], "get-url"))
1723                 result = get_url(argc, argv);
1724         else if (!strcmp(argv[0], "set-url"))
1725                 result = set_url(argc, argv);
1726         else if (!strcmp(argv[0], "show"))
1727                 result = show(argc, argv);
1728         else if (!strcmp(argv[0], "prune"))
1729                 result = prune(argc, argv);
1730         else if (!strcmp(argv[0], "update"))
1731                 result = update(argc, argv);
1732         else {
1733                 error(_("Unknown subcommand: %s"), argv[0]);
1734                 usage_with_options(builtin_remote_usage, options);
1735         }
1736
1737         return result ? 1 : 0;
1738 }