builtin/remote.c

   1 #include "builtin.h"
   2 #include "parse-options.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5 #include "string-list.h"
   6 #include "strbuf.h"
   7 #include "run-command.h"
   8 #include "refs.h"
   9 #include "argv-array.h"
  10
  11 static const char * const builtin_remote_usage[] = {
  12         N_("git remote [-v | --verbose]"),
  13         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  14         N_("git remote rename <old> <new>"),
  15         N_("git remote remove <name>"),
  16         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  17         N_("git remote [-v | --verbose] show [-n] <name>"),
  18         N_("git remote prune [-n | --dry-run] <name>"),
  19         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  20         N_("git remote set-branches [--add] <name> <branch>..."),
  21         N_("git remote get-url [--push] [--all] <name>"),
  22         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  23         N_("git remote set-url --add <name> <newurl>"),
  24         N_("git remote set-url --delete <name> <url>"),
  25         NULL
  26 };
  27
  28 static const char * const builtin_remote_add_usage[] = {
  29         N_("git remote add [<options>] <name> <url>"),
  30         NULL
  31 };
  32
  33 static const char * const builtin_remote_rename_usage[] = {
  34         N_("git remote rename <old> <new>"),
  35         NULL
  36 };
  37
  38 static const char * const builtin_remote_rm_usage[] = {
  39         N_("git remote remove <name>"),
  40         NULL
  41 };
  42
  43 static const char * const builtin_remote_sethead_usage[] = {
  44         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  45         NULL
  46 };
  47
  48 static const char * const builtin_remote_setbranches_usage[] = {
  49         N_("git remote set-branches <name> <branch>..."),
  50         N_("git remote set-branches --add <name> <branch>..."),
  51         NULL
  52 };
  53
  54 static const char * const builtin_remote_show_usage[] = {
  55         N_("git remote show [<options>] <name>"),
  56         NULL
  57 };
  58
  59 static const char * const builtin_remote_prune_usage[] = {
  60         N_("git remote prune [<options>] <name>"),
  61         NULL
  62 };
  63
  64 static const char * const builtin_remote_update_usage[] = {
  65         N_("git remote update [<options>] [<group> | <remote>]..."),
  66         NULL
  67 };
  68
  69 static const char * const builtin_remote_geturl_usage[] = {
  70         N_("git remote get-url [--push] [--all] <name>"),
  71         NULL
  72 };
  73
  74 static const char * const builtin_remote_seturl_usage[] = {
  75         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  76         N_("git remote set-url --add <name> <newurl>"),
  77         N_("git remote set-url --delete <name> <url>"),
  78         NULL
  79 };
  80
  81 #define GET_REF_STATES (1<<0)
  82 #define GET_HEAD_NAMES (1<<1)
  83 #define GET_PUSH_REF_STATES (1<<2)
  84
  85 static int verbose;
  86
  87 static int fetch_remote(const char *name)
  88 {
  89         const char *argv[] = { "fetch", name, NULL, NULL };
  90         if (verbose) {
  91                 argv[1] = "-v";
  92                 argv[2] = name;
  93         }
  94         printf_ln(_("Updating %s"), name);
  95         if (run_command_v_opt(argv, RUN_GIT_CMD))
  96                 return error(_("Could not fetch %s"), name);
  97         return 0;
  98 }
  99
 100 enum {
 101         TAGS_UNSET = 0,
 102         TAGS_DEFAULT = 1,
 103         TAGS_SET = 2
 104 };
 105
 106 #define MIRROR_NONE 0
 107 #define MIRROR_FETCH 1
 108 #define MIRROR_PUSH 2
 109 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 110
 111 static void add_branch(const char *key, const char *branchname,
 112                        const char *remotename, int mirror, struct strbuf *tmp)
 113 {
 114         strbuf_reset(tmp);
 115         strbuf_addch(tmp, '+');
 116         if (mirror)
 117                 strbuf_addf(tmp, "refs/%s:refs/%s",
 118                                 branchname, branchname);
 119         else
 120                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 121                                 branchname, remotename, branchname);
 122         git_config_set_multivar(key, tmp->buf, "^$", 0);
 123 }
 124
 125 static const char mirror_advice[] =
 126 N_("--mirror is dangerous and deprecated; please\n"
 127    "\t use --mirror=fetch or --mirror=push instead");
 128
 129 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 130 {
 131         unsigned *mirror = opt->value;
 132         if (not)
 133                 *mirror = MIRROR_NONE;
 134         else if (!arg) {
 135                 warning("%s", _(mirror_advice));
 136                 *mirror = MIRROR_BOTH;
 137         }
 138         else if (!strcmp(arg, "fetch"))
 139                 *mirror = MIRROR_FETCH;
 140         else if (!strcmp(arg, "push"))
 141                 *mirror = MIRROR_PUSH;
 142         else
 143                 return error(_("unknown mirror argument: %s"), arg);
 144         return 0;
 145 }
 146
 147 static int add(int argc, const char **argv)
 148 {
 149         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 150         unsigned mirror = MIRROR_NONE;
 151         struct string_list track = STRING_LIST_INIT_NODUP;
 152         const char *master = NULL;
 153         struct remote *remote;
 154         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 155         const char *name, *url;
 156         int i;
 157
 158         struct option options[] = {
 159                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 160                 OPT_SET_INT(0, "tags", &fetch_tags,
 161                             N_("import all tags and associated objects when fetching"),
 162                             TAGS_SET),
 163                 OPT_SET_INT(0, NULL, &fetch_tags,
 164                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 165                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 166                                 N_("branch(es) to track")),
 167                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 168                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 169                         N_("set up remote as a mirror to push to or fetch from"),
 170                         PARSE_OPT_OPTARG, parse_mirror_opt },
 171                 OPT_END()
 172         };
 173
 174         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 175                              0);
 176
 177         if (argc != 2)
 178                 usage_with_options(builtin_remote_add_usage, options);
 179
 180         if (mirror && master)
 181                 die(_("specifying a master branch makes no sense with --mirror"));
 182         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 183                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 184
 185         name = argv[0];
 186         url = argv[1];
 187
 188         remote = remote_get(name);
 189         if (remote_is_configured(remote))
 190                 die(_("remote %s already exists."), name);
 191
 192         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 193         if (!valid_fetch_refspec(buf2.buf))
 194                 die(_("'%s' is not a valid remote name"), name);
 195
 196         strbuf_addf(&buf, "remote.%s.url", name);
 197         git_config_set(buf.buf, url);
 198
 199         if (!mirror || mirror & MIRROR_FETCH) {
 200                 strbuf_reset(&buf);
 201                 strbuf_addf(&buf, "remote.%s.fetch", name);
 202                 if (track.nr == 0)
 203                         string_list_append(&track, "*");
 204                 for (i = 0; i < track.nr; i++) {
 205                         add_branch(buf.buf, track.items[i].string,
 206                                    name, mirror, &buf2);
 207                 }
 208         }
 209
 210         if (mirror & MIRROR_PUSH) {
 211                 strbuf_reset(&buf);
 212                 strbuf_addf(&buf, "remote.%s.mirror", name);
 213                 git_config_set(buf.buf, "true");
 214         }
 215
 216         if (fetch_tags != TAGS_DEFAULT) {
 217                 strbuf_reset(&buf);
 218                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 219                 git_config_set(buf.buf,
 220                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 221         }
 222
 223         if (fetch && fetch_remote(name))
 224                 return 1;
 225
 226         if (master) {
 227                 strbuf_reset(&buf);
 228                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 229
 230                 strbuf_reset(&buf2);
 231                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 232
 233                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 234                         return error(_("Could not setup master '%s'"), master);
 235         }
 236
 237         strbuf_release(&buf);
 238         strbuf_release(&buf2);
 239         string_list_clear(&track, 0);
 240
 241         return 0;
 242 }
 243
 244 struct branch_info {
 245         char *remote_name;
 246         struct string_list merge;
 247         enum { NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE } rebase;
 248 };
 249
 250 static struct string_list branch_list;
 251
 252 static const char *abbrev_ref(const char *name, const char *prefix)
 253 {
 254         skip_prefix(name, prefix, &name);
 255         return name;
 256 }
 257 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 258
 259 static int config_read_branches(const char *key, const char *value, void *cb)
 260 {
 261         if (starts_with(key, "branch.")) {
 262                 const char *orig_key = key;
 263                 char *name;
 264                 struct string_list_item *item;
 265                 struct branch_info *info;
 266                 enum { REMOTE, MERGE, REBASE } type;
 267                 size_t key_len;
 268
 269                 key += 7;
 270                 if (strip_suffix(key, ".remote", &key_len)) {
 271                         name = xmemdupz(key, key_len);
 272                         type = REMOTE;
 273                 } else if (strip_suffix(key, ".merge", &key_len)) {
 274                         name = xmemdupz(key, key_len);
 275                         type = MERGE;
 276                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 277                         name = xmemdupz(key, key_len);
 278                         type = REBASE;
 279                 } else
 280                         return 0;
 281
 282                 item = string_list_insert(&branch_list, name);
 283
 284                 if (!item->util)
 285                         item->util = xcalloc(1, sizeof(struct branch_info));
 286                 info = item->util;
 287                 if (type == REMOTE) {
 288                         if (info->remote_name)
 289                                 warning(_("more than one %s"), orig_key);
 290                         info->remote_name = xstrdup(value);
 291                 } else if (type == MERGE) {
 292                         char *space = strchr(value, ' ');
 293                         value = abbrev_branch(value);
 294                         while (space) {
 295                                 char *merge;
 296                                 merge = xstrndup(value, space - value);
 297                                 string_list_append(&info->merge, merge);
 298                                 value = abbrev_branch(space + 1);
 299                                 space = strchr(value, ' ');
 300                         }
 301                         string_list_append(&info->merge, xstrdup(value));
 302                 } else {
 303                         int v = git_config_maybe_bool(orig_key, value);
 304                         if (v >= 0)
 305                                 info->rebase = v;
 306                         else if (!strcmp(value, "preserve"))
 307                                 info->rebase = NORMAL_REBASE;
 308                         else if (!strcmp(value, "interactive"))
 309                                 info->rebase = INTERACTIVE_REBASE;
 310                 }
 311         }
 312         return 0;
 313 }
 314
 315 static void read_branches(void)
 316 {
 317         if (branch_list.nr)
 318                 return;
 319         git_config(config_read_branches, NULL);
 320 }
 321
 322 struct ref_states {
 323         struct remote *remote;
 324         struct string_list new, stale, tracked, heads, push;
 325         int queried;
 326 };
 327
 328 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 329 {
 330         struct ref *fetch_map = NULL, **tail = &fetch_map;
 331         struct ref *ref, *stale_refs;
 332         int i;
 333
 334         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 335                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 336                         die(_("Could not get fetch map for refspec %s"),
 337                                 states->remote->fetch_refspec[i]);
 338
 339         states->new.strdup_strings = 1;
 340         states->tracked.strdup_strings = 1;
 341         states->stale.strdup_strings = 1;
 342         for (ref = fetch_map; ref; ref = ref->next) {
 343                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 344                         string_list_append(&states->new, abbrev_branch(ref->name));
 345                 else
 346                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 347         }
 348         stale_refs = get_stale_heads(states->remote->fetch,
 349                                      states->remote->fetch_refspec_nr, fetch_map);
 350         for (ref = stale_refs; ref; ref = ref->next) {
 351                 struct string_list_item *item =
 352                         string_list_append(&states->stale, abbrev_branch(ref->name));
 353                 item->util = xstrdup(ref->name);
 354         }
 355         free_refs(stale_refs);
 356         free_refs(fetch_map);
 357
 358         string_list_sort(&states->new);
 359         string_list_sort(&states->tracked);
 360         string_list_sort(&states->stale);
 361
 362         return 0;
 363 }
 364
 365 struct push_info {
 366         char *dest;
 367         int forced;
 368         enum {
 369                 PUSH_STATUS_CREATE = 0,
 370                 PUSH_STATUS_DELETE,
 371                 PUSH_STATUS_UPTODATE,
 372                 PUSH_STATUS_FASTFORWARD,
 373                 PUSH_STATUS_OUTOFDATE,
 374                 PUSH_STATUS_NOTQUERIED
 375         } status;
 376 };
 377
 378 static int get_push_ref_states(const struct ref *remote_refs,
 379         struct ref_states *states)
 380 {
 381         struct remote *remote = states->remote;
 382         struct ref *ref, *local_refs, *push_map;
 383         if (remote->mirror)
 384                 return 0;
 385
 386         local_refs = get_local_heads();
 387         push_map = copy_ref_list(remote_refs);
 388
 389         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 390                         remote->push_refspec, MATCH_REFS_NONE);
 391
 392         states->push.strdup_strings = 1;
 393         for (ref = push_map; ref; ref = ref->next) {
 394                 struct string_list_item *item;
 395                 struct push_info *info;
 396
 397                 if (!ref->peer_ref)
 398                         continue;
 399                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 400
 401                 item = string_list_append(&states->push,
 402                                           abbrev_branch(ref->peer_ref->name));
 403                 item->util = xcalloc(1, sizeof(struct push_info));
 404                 info = item->util;
 405                 info->forced = ref->force;
 406                 info->dest = xstrdup(abbrev_branch(ref->name));
 407
 408                 if (is_null_oid(&ref->new_oid)) {
 409                         info->status = PUSH_STATUS_DELETE;
 410                 } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
 411                         info->status = PUSH_STATUS_UPTODATE;
 412                 else if (is_null_oid(&ref->old_oid))
 413                         info->status = PUSH_STATUS_CREATE;
 414                 else if (has_object_file(&ref->old_oid) &&
 415                          ref_newer(&ref->new_oid, &ref->old_oid))
 416                         info->status = PUSH_STATUS_FASTFORWARD;
 417                 else
 418                         info->status = PUSH_STATUS_OUTOFDATE;
 419         }
 420         free_refs(local_refs);
 421         free_refs(push_map);
 422         return 0;
 423 }
 424
 425 static int get_push_ref_states_noquery(struct ref_states *states)
 426 {
 427         int i;
 428         struct remote *remote = states->remote;
 429         struct string_list_item *item;
 430         struct push_info *info;
 431
 432         if (remote->mirror)
 433                 return 0;
 434
 435         states->push.strdup_strings = 1;
 436         if (!remote->push_refspec_nr) {
 437                 item = string_list_append(&states->push, _("(matching)"));
 438                 info = item->util = xcalloc(1, sizeof(struct push_info));
 439                 info->status = PUSH_STATUS_NOTQUERIED;
 440                 info->dest = xstrdup(item->string);
 441         }
 442         for (i = 0; i < remote->push_refspec_nr; i++) {
 443                 struct refspec *spec = remote->push + i;
 444                 if (spec->matching)
 445                         item = string_list_append(&states->push, _("(matching)"));
 446                 else if (strlen(spec->src))
 447                         item = string_list_append(&states->push, spec->src);
 448                 else
 449                         item = string_list_append(&states->push, _("(delete)"));
 450
 451                 info = item->util = xcalloc(1, sizeof(struct push_info));
 452                 info->forced = spec->force;
 453                 info->status = PUSH_STATUS_NOTQUERIED;
 454                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 455         }
 456         return 0;
 457 }
 458
 459 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 460 {
 461         struct ref *ref, *matches;
 462         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 463         struct refspec refspec;
 464
 465         refspec.force = 0;
 466         refspec.pattern = 1;
 467         refspec.src = refspec.dst = "refs/heads/*";
 468         states->heads.strdup_strings = 1;
 469         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 470         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 471                                     fetch_map, 1);
 472         for (ref = matches; ref; ref = ref->next)
 473                 string_list_append(&states->heads, abbrev_branch(ref->name));
 474
 475         free_refs(fetch_map);
 476         free_refs(matches);
 477
 478         return 0;
 479 }
 480
 481 struct known_remote {
 482         struct known_remote *next;
 483         struct remote *remote;
 484 };
 485
 486 struct known_remotes {
 487         struct remote *to_delete;
 488         struct known_remote *list;
 489 };
 490
 491 static int add_known_remote(struct remote *remote, void *cb_data)
 492 {
 493         struct known_remotes *all = cb_data;
 494         struct known_remote *r;
 495
 496         if (!strcmp(all->to_delete->name, remote->name))
 497                 return 0;
 498
 499         r = xmalloc(sizeof(*r));
 500         r->remote = remote;
 501         r->next = all->list;
 502         all->list = r;
 503         return 0;
 504 }
 505
 506 struct branches_for_remote {
 507         struct remote *remote;
 508         struct string_list *branches, *skipped;
 509         struct known_remotes *keep;
 510 };
 511
 512 static int add_branch_for_removal(const char *refname,
 513         const struct object_id *oid, int flags, void *cb_data)
 514 {
 515         struct branches_for_remote *branches = cb_data;
 516         struct refspec refspec;
 517         struct known_remote *kr;
 518
 519         memset(&refspec, 0, sizeof(refspec));
 520         refspec.dst = (char *)refname;
 521         if (remote_find_tracking(branches->remote, &refspec))
 522                 return 0;
 523
 524         /* don't delete a branch if another remote also uses it */
 525         for (kr = branches->keep->list; kr; kr = kr->next) {
 526                 memset(&refspec, 0, sizeof(refspec));
 527                 refspec.dst = (char *)refname;
 528                 if (!remote_find_tracking(kr->remote, &refspec))
 529                         return 0;
 530         }
 531
 532         /* don't delete non-remote-tracking refs */
 533         if (!starts_with(refname, "refs/remotes/")) {
 534                 /* advise user how to delete local branches */
 535                 if (starts_with(refname, "refs/heads/"))
 536                         string_list_append(branches->skipped,
 537                                            abbrev_branch(refname));
 538                 /* silently skip over other non-remote refs */
 539                 return 0;
 540         }
 541
 542         /* make sure that symrefs are deleted */
 543         if (flags & REF_ISSYMREF)
 544                 return unlink(git_path("%s", refname));
 545
 546         string_list_append(branches->branches, refname);
 547
 548         return 0;
 549 }
 550
 551 struct rename_info {
 552         const char *old;
 553         const char *new;
 554         struct string_list *remote_branches;
 555 };
 556
 557 static int read_remote_branches(const char *refname,
 558         const struct object_id *oid, int flags, void *cb_data)
 559 {
 560         struct rename_info *rename = cb_data;
 561         struct strbuf buf = STRBUF_INIT;
 562         struct string_list_item *item;
 563         int flag;
 564         struct object_id orig_oid;
 565         const char *symref;
 566
 567         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 568         if (starts_with(refname, buf.buf)) {
 569                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 570                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 571                                             orig_oid.hash, &flag);
 572                 if (flag & REF_ISSYMREF)
 573                         item->util = xstrdup(symref);
 574                 else
 575                         item->util = NULL;
 576         }
 577
 578         return 0;
 579 }
 580
 581 static int migrate_file(struct remote *remote)
 582 {
 583         struct strbuf buf = STRBUF_INIT;
 584         int i;
 585
 586         strbuf_addf(&buf, "remote.%s.url", remote->name);
 587         for (i = 0; i < remote->url_nr; i++)
 588                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 589         strbuf_reset(&buf);
 590         strbuf_addf(&buf, "remote.%s.push", remote->name);
 591         for (i = 0; i < remote->push_refspec_nr; i++)
 592                 git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0);
 593         strbuf_reset(&buf);
 594         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 595         for (i = 0; i < remote->fetch_refspec_nr; i++)
 596                 git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0);
 597         if (remote->origin == REMOTE_REMOTES)
 598                 unlink_or_warn(git_path("remotes/%s", remote->name));
 599         else if (remote->origin == REMOTE_BRANCHES)
 600                 unlink_or_warn(git_path("branches/%s", remote->name));
 601
 602         return 0;
 603 }
 604
 605 static int mv(int argc, const char **argv)
 606 {
 607         struct option options[] = {
 608                 OPT_END()
 609         };
 610         struct remote *oldremote, *newremote;
 611         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 612                 old_remote_context = STRBUF_INIT;
 613         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 614         struct rename_info rename;
 615         int i, refspec_updated = 0;
 616
 617         if (argc != 3)
 618                 usage_with_options(builtin_remote_rename_usage, options);
 619
 620         rename.old = argv[1];
 621         rename.new = argv[2];
 622         rename.remote_branches = &remote_branches;
 623
 624         oldremote = remote_get(rename.old);
 625         if (!remote_is_configured(oldremote))
 626                 die(_("No such remote: %s"), rename.old);
 627
 628         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 629                 return migrate_file(oldremote);
 630
 631         newremote = remote_get(rename.new);
 632         if (remote_is_configured(newremote))
 633                 die(_("remote %s already exists."), rename.new);
 634
 635         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 636         if (!valid_fetch_refspec(buf.buf))
 637                 die(_("'%s' is not a valid remote name"), rename.new);
 638
 639         strbuf_reset(&buf);
 640         strbuf_addf(&buf, "remote.%s", rename.old);
 641         strbuf_addf(&buf2, "remote.%s", rename.new);
 642         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 643                 return error(_("Could not rename config section '%s' to '%s'"),
 644                                 buf.buf, buf2.buf);
 645
 646         strbuf_reset(&buf);
 647         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 648         git_config_set_multivar(buf.buf, NULL, NULL, 1);
 649         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 650         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 651                 char *ptr;
 652
 653                 strbuf_reset(&buf2);
 654                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 655                 ptr = strstr(buf2.buf, old_remote_context.buf);
 656                 if (ptr) {
 657                         refspec_updated = 1;
 658                         strbuf_splice(&buf2,
 659                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 660                                       strlen(rename.old), rename.new,
 661                                       strlen(rename.new));
 662                 } else
 663                         warning(_("Not updating non-default fetch refspec\n"
 664                                   "\t%s\n"
 665                                   "\tPlease update the configuration manually if necessary."),
 666                                 buf2.buf);
 667
 668                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 669         }
 670
 671         read_branches();
 672         for (i = 0; i < branch_list.nr; i++) {
 673                 struct string_list_item *item = branch_list.items + i;
 674                 struct branch_info *info = item->util;
 675                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 676                         strbuf_reset(&buf);
 677                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 678                         git_config_set(buf.buf, rename.new);
 679                 }
 680         }
 681
 682         if (!refspec_updated)
 683                 return 0;
 684
 685         /*
 686          * First remove symrefs, then rename the rest, finally create
 687          * the new symrefs.
 688          */
 689         for_each_ref(read_remote_branches, &rename);
 690         for (i = 0; i < remote_branches.nr; i++) {
 691                 struct string_list_item *item = remote_branches.items + i;
 692                 int flag = 0;
 693                 struct object_id oid;
 694
 695                 read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 696                 if (!(flag & REF_ISSYMREF))
 697                         continue;
 698                 if (delete_ref(item->string, NULL, REF_NODEREF))
 699                         die(_("deleting '%s' failed"), item->string);
 700         }
 701         for (i = 0; i < remote_branches.nr; i++) {
 702                 struct string_list_item *item = remote_branches.items + i;
 703
 704                 if (item->util)
 705                         continue;
 706                 strbuf_reset(&buf);
 707                 strbuf_addstr(&buf, item->string);
 708                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 709                                 rename.new, strlen(rename.new));
 710                 strbuf_reset(&buf2);
 711                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 712                                 item->string, buf.buf);
 713                 if (rename_ref(item->string, buf.buf, buf2.buf))
 714                         die(_("renaming '%s' failed"), item->string);
 715         }
 716         for (i = 0; i < remote_branches.nr; i++) {
 717                 struct string_list_item *item = remote_branches.items + i;
 718
 719                 if (!item->util)
 720                         continue;
 721                 strbuf_reset(&buf);
 722                 strbuf_addstr(&buf, item->string);
 723                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 724                                 rename.new, strlen(rename.new));
 725                 strbuf_reset(&buf2);
 726                 strbuf_addstr(&buf2, item->util);
 727                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 728                                 rename.new, strlen(rename.new));
 729                 strbuf_reset(&buf3);
 730                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 731                                 item->string, buf.buf);
 732                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 733                         die(_("creating '%s' failed"), buf.buf);
 734         }
 735         return 0;
 736 }
 737
 738 static int rm(int argc, const char **argv)
 739 {
 740         struct option options[] = {
 741                 OPT_END()
 742         };
 743         struct remote *remote;
 744         struct strbuf buf = STRBUF_INIT;
 745         struct known_remotes known_remotes = { NULL, NULL };
 746         struct string_list branches = STRING_LIST_INIT_DUP;
 747         struct string_list skipped = STRING_LIST_INIT_DUP;
 748         struct branches_for_remote cb_data;
 749         int i, result;
 750
 751         memset(&cb_data, 0, sizeof(cb_data));
 752         cb_data.branches = &branches;
 753         cb_data.skipped = &skipped;
 754         cb_data.keep = &known_remotes;
 755
 756         if (argc != 2)
 757                 usage_with_options(builtin_remote_rm_usage, options);
 758
 759         remote = remote_get(argv[1]);
 760         if (!remote_is_configured(remote))
 761                 die(_("No such remote: %s"), argv[1]);
 762
 763         known_remotes.to_delete = remote;
 764         for_each_remote(add_known_remote, &known_remotes);
 765
 766         read_branches();
 767         for (i = 0; i < branch_list.nr; i++) {
 768                 struct string_list_item *item = branch_list.items + i;
 769                 struct branch_info *info = item->util;
 770                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 771                         const char *keys[] = { "remote", "merge", NULL }, **k;
 772                         for (k = keys; *k; k++) {
 773                                 strbuf_reset(&buf);
 774                                 strbuf_addf(&buf, "branch.%s.%s",
 775                                                 item->string, *k);
 776                                 git_config_set(buf.buf, NULL);
 777                         }
 778                 }
 779         }
 780
 781         /*
 782          * We cannot just pass a function to for_each_ref() which deletes
 783          * the branches one by one, since for_each_ref() relies on cached
 784          * refs, which are invalidated when deleting a branch.
 785          */
 786         cb_data.remote = remote;
 787         result = for_each_ref(add_branch_for_removal, &cb_data);
 788         strbuf_release(&buf);
 789
 790         if (!result)
 791                 result = delete_refs(&branches);
 792         string_list_clear(&branches, 0);
 793
 794         if (skipped.nr) {
 795                 fprintf_ln(stderr,
 796                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 797                               "to delete it, use:",
 798                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 799                               "to delete them, use:",
 800                               skipped.nr));
 801                 for (i = 0; i < skipped.nr; i++)
 802                         fprintf(stderr, "  git branch -d %s\n",
 803                                 skipped.items[i].string);
 804         }
 805         string_list_clear(&skipped, 0);
 806
 807         if (!result) {
 808                 strbuf_addf(&buf, "remote.%s", remote->name);
 809                 if (git_config_rename_section(buf.buf, NULL) < 1)
 810                         return error(_("Could not remove config section '%s'"), buf.buf);
 811         }
 812
 813         return result;
 814 }
 815
 816 static void clear_push_info(void *util, const char *string)
 817 {
 818         struct push_info *info = util;
 819         free(info->dest);
 820         free(info);
 821 }
 822
 823 static void free_remote_ref_states(struct ref_states *states)
 824 {
 825         string_list_clear(&states->new, 0);
 826         string_list_clear(&states->stale, 1);
 827         string_list_clear(&states->tracked, 0);
 828         string_list_clear(&states->heads, 0);
 829         string_list_clear_func(&states->push, clear_push_info);
 830 }
 831
 832 static int append_ref_to_tracked_list(const char *refname,
 833         const struct object_id *oid, int flags, void *cb_data)
 834 {
 835         struct ref_states *states = cb_data;
 836         struct refspec refspec;
 837
 838         if (flags & REF_ISSYMREF)
 839                 return 0;
 840
 841         memset(&refspec, 0, sizeof(refspec));
 842         refspec.dst = (char *)refname;
 843         if (!remote_find_tracking(states->remote, &refspec))
 844                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 845
 846         return 0;
 847 }
 848
 849 static int get_remote_ref_states(const char *name,
 850                                  struct ref_states *states,
 851                                  int query)
 852 {
 853         struct transport *transport;
 854         const struct ref *remote_refs;
 855
 856         states->remote = remote_get(name);
 857         if (!states->remote)
 858                 return error(_("No such remote: %s"), name);
 859
 860         read_branches();
 861
 862         if (query) {
 863                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 864                         states->remote->url[0] : NULL);
 865                 remote_refs = transport_get_remote_refs(transport);
 866                 transport_disconnect(transport);
 867
 868                 states->queried = 1;
 869                 if (query & GET_REF_STATES)
 870                         get_ref_states(remote_refs, states);
 871                 if (query & GET_HEAD_NAMES)
 872                         get_head_names(remote_refs, states);
 873                 if (query & GET_PUSH_REF_STATES)
 874                         get_push_ref_states(remote_refs, states);
 875         } else {
 876                 for_each_ref(append_ref_to_tracked_list, states);
 877                 string_list_sort(&states->tracked);
 878                 get_push_ref_states_noquery(states);
 879         }
 880
 881         return 0;
 882 }
 883
 884 struct show_info {
 885         struct string_list *list;
 886         struct ref_states *states;
 887         int width, width2;
 888         int any_rebase;
 889 };
 890
 891 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 892 {
 893         struct show_info *info = cb_data;
 894         int n = strlen(item->string);
 895         if (n > info->width)
 896                 info->width = n;
 897         string_list_insert(info->list, item->string);
 898         return 0;
 899 }
 900
 901 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 902 {
 903         struct show_info *info = cb_data;
 904         struct ref_states *states = info->states;
 905         const char *name = item->string;
 906
 907         if (states->queried) {
 908                 const char *fmt = "%s";
 909                 const char *arg = "";
 910                 if (string_list_has_string(&states->new, name)) {
 911                         fmt = _(" new (next fetch will store in remotes/%s)");
 912                         arg = states->remote->name;
 913                 } else if (string_list_has_string(&states->tracked, name))
 914                         arg = _(" tracked");
 915                 else if (string_list_has_string(&states->stale, name))
 916                         arg = _(" stale (use 'git remote prune' to remove)");
 917                 else
 918                         arg = _(" ???");
 919                 printf("    %-*s", info->width, name);
 920                 printf(fmt, arg);
 921                 printf("\n");
 922         } else
 923                 printf("    %s\n", name);
 924
 925         return 0;
 926 }
 927
 928 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 929 {
 930         struct show_info *show_info = cb_data;
 931         struct ref_states *states = show_info->states;
 932         struct branch_info *branch_info = branch_item->util;
 933         struct string_list_item *item;
 934         int n;
 935
 936         if (!branch_info->merge.nr || !branch_info->remote_name ||
 937             strcmp(states->remote->name, branch_info->remote_name))
 938                 return 0;
 939         if ((n = strlen(branch_item->string)) > show_info->width)
 940                 show_info->width = n;
 941         if (branch_info->rebase)
 942                 show_info->any_rebase = 1;
 943
 944         item = string_list_insert(show_info->list, branch_item->string);
 945         item->util = branch_info;
 946
 947         return 0;
 948 }
 949
 950 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 951 {
 952         struct show_info *show_info = cb_data;
 953         struct branch_info *branch_info = item->util;
 954         struct string_list *merge = &branch_info->merge;
 955         const char *also;
 956         int i;
 957
 958         if (branch_info->rebase && branch_info->merge.nr > 1) {
 959                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 960                         item->string);
 961                 return 0;
 962         }
 963
 964         printf("    %-*s ", show_info->width, item->string);
 965         if (branch_info->rebase) {
 966                 printf_ln(_(branch_info->rebase == INTERACTIVE_REBASE ?
 967                         "rebases interactively onto remote %s" :
 968                         "rebases onto remote %s"), merge->items[0].string);
 969                 return 0;
 970         } else if (show_info->any_rebase) {
 971                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 972                 also = _("    and with remote");
 973         } else {
 974                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 975                 also = _("   and with remote");
 976         }
 977         for (i = 1; i < merge->nr; i++)
 978                 printf("    %-*s %s %s\n", show_info->width, "", also,
 979                        merge->items[i].string);
 980
 981         return 0;
 982 }
 983
 984 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 985 {
 986         struct show_info *show_info = cb_data;
 987         struct push_info *push_info = push_item->util;
 988         struct string_list_item *item;
 989         int n;
 990         if ((n = strlen(push_item->string)) > show_info->width)
 991                 show_info->width = n;
 992         if ((n = strlen(push_info->dest)) > show_info->width2)
 993                 show_info->width2 = n;
 994         item = string_list_append(show_info->list, push_item->string);
 995         item->util = push_item->util;
 996         return 0;
 997 }
 998
 999 /*
1000  * Sorting comparison for a string list that has push_info
1001  * structs in its util field
1002  */
1003 static int cmp_string_with_push(const void *va, const void *vb)
1004 {
1005         const struct string_list_item *a = va;
1006         const struct string_list_item *b = vb;
1007         const struct push_info *a_push = a->util;
1008         const struct push_info *b_push = b->util;
1009         int cmp = strcmp(a->string, b->string);
1010         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1011 }
1012
1013 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1014 {
1015         struct show_info *show_info = cb_data;
1016         struct push_info *push_info = item->util;
1017         const char *src = item->string, *status = NULL;
1018
1019         switch (push_info->status) {
1020         case PUSH_STATUS_CREATE:
1021                 status = _("create");
1022                 break;
1023         case PUSH_STATUS_DELETE:
1024                 status = _("delete");
1025                 src = _("(none)");
1026                 break;
1027         case PUSH_STATUS_UPTODATE:
1028                 status = _("up to date");
1029                 break;
1030         case PUSH_STATUS_FASTFORWARD:
1031                 status = _("fast-forwardable");
1032                 break;
1033         case PUSH_STATUS_OUTOFDATE:
1034                 status = _("local out of date");
1035                 break;
1036         case PUSH_STATUS_NOTQUERIED:
1037                 break;
1038         }
1039         if (status) {
1040                 if (push_info->forced)
1041                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1042                                show_info->width2, push_info->dest, status);
1043                 else
1044                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1045                                show_info->width2, push_info->dest, status);
1046         } else {
1047                 if (push_info->forced)
1048                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1049                                push_info->dest);
1050                 else
1051                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1052                                push_info->dest);
1053         }
1054         return 0;
1055 }
1056
1057 static int get_one_entry(struct remote *remote, void *priv)
1058 {
1059         struct string_list *list = priv;
1060         struct strbuf url_buf = STRBUF_INIT;
1061         const char **url;
1062         int i, url_nr;
1063
1064         if (remote->url_nr > 0) {
1065                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1066                 string_list_append(list, remote->name)->util =
1067                                 strbuf_detach(&url_buf, NULL);
1068         } else
1069                 string_list_append(list, remote->name)->util = NULL;
1070         if (remote->pushurl_nr) {
1071                 url = remote->pushurl;
1072                 url_nr = remote->pushurl_nr;
1073         } else {
1074                 url = remote->url;
1075                 url_nr = remote->url_nr;
1076         }
1077         for (i = 0; i < url_nr; i++)
1078         {
1079                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1080                 string_list_append(list, remote->name)->util =
1081                                 strbuf_detach(&url_buf, NULL);
1082         }
1083
1084         return 0;
1085 }
1086
1087 static int show_all(void)
1088 {
1089         struct string_list list = STRING_LIST_INIT_NODUP;
1090         int result;
1091
1092         list.strdup_strings = 1;
1093         result = for_each_remote(get_one_entry, &list);
1094
1095         if (!result) {
1096                 int i;
1097
1098                 string_list_sort(&list);
1099                 for (i = 0; i < list.nr; i++) {
1100                         struct string_list_item *item = list.items + i;
1101                         if (verbose)
1102                                 printf("%s\t%s\n", item->string,
1103                                         item->util ? (const char *)item->util : "");
1104                         else {
1105                                 if (i && !strcmp((item - 1)->string, item->string))
1106                                         continue;
1107                                 printf("%s\n", item->string);
1108                         }
1109                 }
1110         }
1111         string_list_clear(&list, 1);
1112         return result;
1113 }
1114
1115 static int show(int argc, const char **argv)
1116 {
1117         int no_query = 0, result = 0, query_flag = 0;
1118         struct option options[] = {
1119                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1120                 OPT_END()
1121         };
1122         struct ref_states states;
1123         struct string_list info_list = STRING_LIST_INIT_NODUP;
1124         struct show_info info;
1125
1126         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1127                              0);
1128
1129         if (argc < 1)
1130                 return show_all();
1131
1132         if (!no_query)
1133                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1134
1135         memset(&states, 0, sizeof(states));
1136         memset(&info, 0, sizeof(info));
1137         info.states = &states;
1138         info.list = &info_list;
1139         for (; argc; argc--, argv++) {
1140                 int i;
1141                 const char **url;
1142                 int url_nr;
1143
1144                 get_remote_ref_states(*argv, &states, query_flag);
1145
1146                 printf_ln(_("* remote %s"), *argv);
1147                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1148                        states.remote->url[0] : _("(no URL)"));
1149                 if (states.remote->pushurl_nr) {
1150                         url = states.remote->pushurl;
1151                         url_nr = states.remote->pushurl_nr;
1152                 } else {
1153                         url = states.remote->url;
1154                         url_nr = states.remote->url_nr;
1155                 }
1156                 for (i = 0; i < url_nr; i++)
1157                         /* TRANSLATORS: the colon ':' should align with
1158                            the one in "  Fetch URL: %s" translation */
1159                         printf_ln(_("  Push  URL: %s"), url[i]);
1160                 if (!i)
1161                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1162                 if (no_query)
1163                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1164                 else if (!states.heads.nr)
1165                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1166                 else if (states.heads.nr == 1)
1167                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1168                 else {
1169                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1170                                  " may be one of the following):\n"));
1171                         for (i = 0; i < states.heads.nr; i++)
1172                                 printf("    %s\n", states.heads.items[i].string);
1173                 }
1174
1175                 /* remote branch info */
1176                 info.width = 0;
1177                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1178                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1179                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1180                 if (info.list->nr)
1181                         printf_ln(Q_("  Remote branch:%s",
1182                                      "  Remote branches:%s",
1183                                      info.list->nr),
1184                                   no_query ? _(" (status not queried)") : "");
1185                 for_each_string_list(info.list, show_remote_info_item, &info);
1186                 string_list_clear(info.list, 0);
1187
1188                 /* git pull info */
1189                 info.width = 0;
1190                 info.any_rebase = 0;
1191                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1192                 if (info.list->nr)
1193                         printf_ln(Q_("  Local branch configured for 'git pull':",
1194                                      "  Local branches configured for 'git pull':",
1195                                      info.list->nr));
1196                 for_each_string_list(info.list, show_local_info_item, &info);
1197                 string_list_clear(info.list, 0);
1198
1199                 /* git push info */
1200                 if (states.remote->mirror)
1201                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1202
1203                 info.width = info.width2 = 0;
1204                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1205                 qsort(info.list->items, info.list->nr,
1206                         sizeof(*info.list->items), cmp_string_with_push);
1207                 if (info.list->nr)
1208                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1209                                      "  Local refs configured for 'git push'%s:",
1210                                      info.list->nr),
1211                                   no_query ? _(" (status not queried)") : "");
1212                 for_each_string_list(info.list, show_push_info_item, &info);
1213                 string_list_clear(info.list, 0);
1214
1215                 free_remote_ref_states(&states);
1216         }
1217
1218         return result;
1219 }
1220
1221 static int set_head(int argc, const char **argv)
1222 {
1223         int i, opt_a = 0, opt_d = 0, result = 0;
1224         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1225         char *head_name = NULL;
1226
1227         struct option options[] = {
1228                 OPT_BOOL('a', "auto", &opt_a,
1229                          N_("set refs/remotes/<name>/HEAD according to remote")),
1230                 OPT_BOOL('d', "delete", &opt_d,
1231                          N_("delete refs/remotes/<name>/HEAD")),
1232                 OPT_END()
1233         };
1234         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1235                              0);
1236         if (argc)
1237                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1238
1239         if (!opt_a && !opt_d && argc == 2) {
1240                 head_name = xstrdup(argv[1]);
1241         } else if (opt_a && !opt_d && argc == 1) {
1242                 struct ref_states states;
1243                 memset(&states, 0, sizeof(states));
1244                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1245                 if (!states.heads.nr)
1246                         result |= error(_("Cannot determine remote HEAD"));
1247                 else if (states.heads.nr > 1) {
1248                         result |= error(_("Multiple remote HEAD branches. "
1249                                           "Please choose one explicitly with:"));
1250                         for (i = 0; i < states.heads.nr; i++)
1251                                 fprintf(stderr, "  git remote set-head %s %s\n",
1252                                         argv[0], states.heads.items[i].string);
1253                 } else
1254                         head_name = xstrdup(states.heads.items[0].string);
1255                 free_remote_ref_states(&states);
1256         } else if (opt_d && !opt_a && argc == 1) {
1257                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1258                         result |= error(_("Could not delete %s"), buf.buf);
1259         } else
1260                 usage_with_options(builtin_remote_sethead_usage, options);
1261
1262         if (head_name) {
1263                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1264                 /* make sure it's valid */
1265                 if (!ref_exists(buf2.buf))
1266                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1267                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1268                         result |= error(_("Could not setup %s"), buf.buf);
1269                 if (opt_a)
1270                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1271                 free(head_name);
1272         }
1273
1274         strbuf_release(&buf);
1275         strbuf_release(&buf2);
1276         return result;
1277 }
1278
1279 static int prune_remote(const char *remote, int dry_run)
1280 {
1281         int result = 0;
1282         struct ref_states states;
1283         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1284         struct string_list_item *item;
1285         const char *dangling_msg = dry_run
1286                 ? _(" %s will become dangling!")
1287                 : _(" %s has become dangling!");
1288
1289         memset(&states, 0, sizeof(states));
1290         get_remote_ref_states(remote, &states, GET_REF_STATES);
1291
1292         if (!states.stale.nr) {
1293                 free_remote_ref_states(&states);
1294                 return 0;
1295         }
1296
1297         printf_ln(_("Pruning %s"), remote);
1298         printf_ln(_("URL: %s"),
1299                   states.remote->url_nr
1300                   ? states.remote->url[0]
1301                   : _("(no URL)"));
1302
1303         for_each_string_list_item(item, &states.stale)
1304                 string_list_append(&refs_to_prune, item->util);
1305         string_list_sort(&refs_to_prune);
1306
1307         if (!dry_run)
1308                 result |= delete_refs(&refs_to_prune);
1309
1310         for_each_string_list_item(item, &states.stale) {
1311                 const char *refname = item->util;
1312
1313                 if (dry_run)
1314                         printf_ln(_(" * [would prune] %s"),
1315                                abbrev_ref(refname, "refs/remotes/"));
1316                 else
1317                         printf_ln(_(" * [pruned] %s"),
1318                                abbrev_ref(refname, "refs/remotes/"));
1319         }
1320
1321         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1322
1323         string_list_clear(&refs_to_prune, 0);
1324         free_remote_ref_states(&states);
1325         return result;
1326 }
1327
1328 static int prune(int argc, const char **argv)
1329 {
1330         int dry_run = 0, result = 0;
1331         struct option options[] = {
1332                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1333                 OPT_END()
1334         };
1335
1336         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1337                              0);
1338
1339         if (argc < 1)
1340                 usage_with_options(builtin_remote_prune_usage, options);
1341
1342         for (; argc; argc--, argv++)
1343                 result |= prune_remote(*argv, dry_run);
1344
1345         return result;
1346 }
1347
1348 static int get_remote_default(const char *key, const char *value, void *priv)
1349 {
1350         if (strcmp(key, "remotes.default") == 0) {
1351                 int *found = priv;
1352                 *found = 1;
1353         }
1354         return 0;
1355 }
1356
1357 static int update(int argc, const char **argv)
1358 {
1359         int i, prune = -1;
1360         struct option options[] = {
1361                 OPT_BOOL('p', "prune", &prune,
1362                          N_("prune remotes after fetching")),
1363                 OPT_END()
1364         };
1365         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1366         int default_defined = 0;
1367         int retval;
1368
1369         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1370                              PARSE_OPT_KEEP_ARGV0);
1371
1372         argv_array_push(&fetch_argv, "fetch");
1373
1374         if (prune != -1)
1375                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1376         if (verbose)
1377                 argv_array_push(&fetch_argv, "-v");
1378         argv_array_push(&fetch_argv, "--multiple");
1379         if (argc < 2)
1380                 argv_array_push(&fetch_argv, "default");
1381         for (i = 1; i < argc; i++)
1382                 argv_array_push(&fetch_argv, argv[i]);
1383
1384         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1385                 git_config(get_remote_default, &default_defined);
1386                 if (!default_defined) {
1387                         argv_array_pop(&fetch_argv);
1388                         argv_array_push(&fetch_argv, "--all");
1389                 }
1390         }
1391
1392         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1393         argv_array_clear(&fetch_argv);
1394         return retval;
1395 }
1396
1397 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1398 {
1399         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1400 }
1401
1402 static void add_branches(struct remote *remote, const char **branches,
1403                          const char *key)
1404 {
1405         const char *remotename = remote->name;
1406         int mirror = remote->mirror;
1407         struct strbuf refspec = STRBUF_INIT;
1408
1409         for (; *branches; branches++)
1410                 add_branch(key, *branches, remotename, mirror, &refspec);
1411
1412         strbuf_release(&refspec);
1413 }
1414
1415 static int set_remote_branches(const char *remotename, const char **branches,
1416                                 int add_mode)
1417 {
1418         struct strbuf key = STRBUF_INIT;
1419         struct remote *remote;
1420
1421         strbuf_addf(&key, "remote.%s.fetch", remotename);
1422
1423         remote = remote_get(remotename);
1424         if (!remote_is_configured(remote))
1425                 die(_("No such remote '%s'"), remotename);
1426
1427         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1428                 strbuf_release(&key);
1429                 return 1;
1430         }
1431         add_branches(remote, branches, key.buf);
1432
1433         strbuf_release(&key);
1434         return 0;
1435 }
1436
1437 static int set_branches(int argc, const char **argv)
1438 {
1439         int add_mode = 0;
1440         struct option options[] = {
1441                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1442                 OPT_END()
1443         };
1444
1445         argc = parse_options(argc, argv, NULL, options,
1446                              builtin_remote_setbranches_usage, 0);
1447         if (argc == 0) {
1448                 error(_("no remote specified"));
1449                 usage_with_options(builtin_remote_setbranches_usage, options);
1450         }
1451         argv[argc] = NULL;
1452
1453         return set_remote_branches(argv[0], argv + 1, add_mode);
1454 }
1455
1456 static int get_url(int argc, const char **argv)
1457 {
1458         int i, push_mode = 0, all_mode = 0;
1459         const char *remotename = NULL;
1460         struct remote *remote;
1461         const char **url;
1462         int url_nr;
1463         struct option options[] = {
1464                 OPT_BOOL('\0', "push", &push_mode,
1465                          N_("query push URLs rather than fetch URLs")),
1466                 OPT_BOOL('\0', "all", &all_mode,
1467                          N_("return all URLs")),
1468                 OPT_END()
1469         };
1470         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1471
1472         if (argc != 1)
1473                 usage_with_options(builtin_remote_geturl_usage, options);
1474
1475         remotename = argv[0];
1476
1477         remote = remote_get(remotename);
1478         if (!remote_is_configured(remote))
1479                 die(_("No such remote '%s'"), remotename);
1480
1481         url_nr = 0;
1482         if (push_mode) {
1483                 url = remote->pushurl;
1484                 url_nr = remote->pushurl_nr;
1485         }
1486         /* else fetch mode */
1487
1488         /* Use the fetch URL when no push URLs were found or requested. */
1489         if (!url_nr) {
1490                 url = remote->url;
1491                 url_nr = remote->url_nr;
1492         }
1493
1494         if (!url_nr)
1495                 die(_("no URLs configured for remote '%s'"), remotename);
1496
1497         if (all_mode) {
1498                 for (i = 0; i < url_nr; i++)
1499                         printf_ln("%s", url[i]);
1500         } else {
1501                 printf_ln("%s", *url);
1502         }
1503
1504         return 0;
1505 }
1506
1507 static int set_url(int argc, const char **argv)
1508 {
1509         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1510         int matches = 0, negative_matches = 0;
1511         const char *remotename = NULL;
1512         const char *newurl = NULL;
1513         const char *oldurl = NULL;
1514         struct remote *remote;
1515         regex_t old_regex;
1516         const char **urlset;
1517         int urlset_nr;
1518         struct strbuf name_buf = STRBUF_INIT;
1519         struct option options[] = {
1520                 OPT_BOOL('\0', "push", &push_mode,
1521                          N_("manipulate push URLs")),
1522                 OPT_BOOL('\0', "add", &add_mode,
1523                          N_("add URL")),
1524                 OPT_BOOL('\0', "delete", &delete_mode,
1525                             N_("delete URLs")),
1526                 OPT_END()
1527         };
1528         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1529                              PARSE_OPT_KEEP_ARGV0);
1530
1531         if (add_mode && delete_mode)
1532                 die(_("--add --delete doesn't make sense"));
1533
1534         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1535                 usage_with_options(builtin_remote_seturl_usage, options);
1536
1537         remotename = argv[1];
1538         newurl = argv[2];
1539         if (argc > 3)
1540                 oldurl = argv[3];
1541
1542         if (delete_mode)
1543                 oldurl = newurl;
1544
1545         remote = remote_get(remotename);
1546         if (!remote_is_configured(remote))
1547                 die(_("No such remote '%s'"), remotename);
1548
1549         if (push_mode) {
1550                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1551                 urlset = remote->pushurl;
1552                 urlset_nr = remote->pushurl_nr;
1553         } else {
1554                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1555                 urlset = remote->url;
1556                 urlset_nr = remote->url_nr;
1557         }
1558
1559         /* Special cases that add new entry. */
1560         if ((!oldurl && !delete_mode) || add_mode) {
1561                 if (add_mode)
1562                         git_config_set_multivar(name_buf.buf, newurl,
1563                                                        "^$", 0);
1564                 else
1565                         git_config_set(name_buf.buf, newurl);
1566                 strbuf_release(&name_buf);
1567
1568                 return 0;
1569         }
1570
1571         /* Old URL specified. Demand that one matches. */
1572         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1573                 die(_("Invalid old URL pattern: %s"), oldurl);
1574
1575         for (i = 0; i < urlset_nr; i++)
1576                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1577                         matches++;
1578                 else
1579                         negative_matches++;
1580         if (!delete_mode && !matches)
1581                 die(_("No such URL found: %s"), oldurl);
1582         if (delete_mode && !negative_matches && !push_mode)
1583                 die(_("Will not delete all non-push URLs"));
1584
1585         regfree(&old_regex);
1586
1587         if (!delete_mode)
1588                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1589         else
1590                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1591         return 0;
1592 }
1593
1594 int cmd_remote(int argc, const char **argv, const char *prefix)
1595 {
1596         struct option options[] = {
1597                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1598                 OPT_END()
1599         };
1600         int result;
1601
1602         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1603                 PARSE_OPT_STOP_AT_NON_OPTION);
1604
1605         if (argc < 1)
1606                 result = show_all();
1607         else if (!strcmp(argv[0], "add"))
1608                 result = add(argc, argv);
1609         else if (!strcmp(argv[0], "rename"))
1610                 result = mv(argc, argv);
1611         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1612                 result = rm(argc, argv);
1613         else if (!strcmp(argv[0], "set-head"))
1614                 result = set_head(argc, argv);
1615         else if (!strcmp(argv[0], "set-branches"))
1616                 result = set_branches(argc, argv);
1617         else if (!strcmp(argv[0], "get-url"))
1618                 result = get_url(argc, argv);
1619         else if (!strcmp(argv[0], "set-url"))
1620                 result = set_url(argc, argv);
1621         else if (!strcmp(argv[0], "show"))
1622                 result = show(argc, argv);
1623         else if (!strcmp(argv[0], "prune"))
1624                 result = prune(argc, argv);
1625         else if (!strcmp(argv[0], "update"))
1626                 result = update(argc, argv);
1627         else {
1628                 error(_("Unknown subcommand: %s"), argv[0]);
1629                 usage_with_options(builtin_remote_usage, options);
1630         }
1631
1632         return result ? 1 : 0;
1633 }