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 set-url [--push] <name> <newurl> [<oldurl>]"),
  22         N_("git remote set-url --add <name> <newurl>"),
  23         N_("git remote set-url --delete <name> <url>"),
  24         NULL
  25 };
  26
  27 static const char * const builtin_remote_add_usage[] = {
  28         N_("git remote add [<options>] <name> <url>"),
  29         NULL
  30 };
  31
  32 static const char * const builtin_remote_rename_usage[] = {
  33         N_("git remote rename <old> <new>"),
  34         NULL
  35 };
  36
  37 static const char * const builtin_remote_rm_usage[] = {
  38         N_("git remote remove <name>"),
  39         NULL
  40 };
  41
  42 static const char * const builtin_remote_sethead_usage[] = {
  43         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  44         NULL
  45 };
  46
  47 static const char * const builtin_remote_setbranches_usage[] = {
  48         N_("git remote set-branches <name> <branch>..."),
  49         N_("git remote set-branches --add <name> <branch>..."),
  50         NULL
  51 };
  52
  53 static const char * const builtin_remote_show_usage[] = {
  54         N_("git remote show [<options>] <name>"),
  55         NULL
  56 };
  57
  58 static const char * const builtin_remote_prune_usage[] = {
  59         N_("git remote prune [<options>] <name>"),
  60         NULL
  61 };
  62
  63 static const char * const builtin_remote_update_usage[] = {
  64         N_("git remote update [<options>] [<group> | <remote>]..."),
  65         NULL
  66 };
  67
  68 static const char * const builtin_remote_seturl_usage[] = {
  69         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  70         N_("git remote set-url --add <name> <newurl>"),
  71         N_("git remote set-url --delete <name> <url>"),
  72         NULL
  73 };
  74
  75 #define GET_REF_STATES (1<<0)
  76 #define GET_HEAD_NAMES (1<<1)
  77 #define GET_PUSH_REF_STATES (1<<2)
  78
  79 static int verbose;
  80
  81 static int fetch_remote(const char *name)
  82 {
  83         const char *argv[] = { "fetch", name, NULL, NULL };
  84         if (verbose) {
  85                 argv[1] = "-v";
  86                 argv[2] = name;
  87         }
  88         printf_ln(_("Updating %s"), name);
  89         if (run_command_v_opt(argv, RUN_GIT_CMD))
  90                 return error(_("Could not fetch %s"), name);
  91         return 0;
  92 }
  93
  94 enum {
  95         TAGS_UNSET = 0,
  96         TAGS_DEFAULT = 1,
  97         TAGS_SET = 2
  98 };
  99
 100 #define MIRROR_NONE 0
 101 #define MIRROR_FETCH 1
 102 #define MIRROR_PUSH 2
 103 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 104
 105 static int add_branch(const char *key, const char *branchname,
 106                 const char *remotename, int mirror, struct strbuf *tmp)
 107 {
 108         strbuf_reset(tmp);
 109         strbuf_addch(tmp, '+');
 110         if (mirror)
 111                 strbuf_addf(tmp, "refs/%s:refs/%s",
 112                                 branchname, branchname);
 113         else
 114                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 115                                 branchname, remotename, branchname);
 116         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 117 }
 118
 119 static const char mirror_advice[] =
 120 N_("--mirror is dangerous and deprecated; please\n"
 121    "\t use --mirror=fetch or --mirror=push instead");
 122
 123 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 124 {
 125         unsigned *mirror = opt->value;
 126         if (not)
 127                 *mirror = MIRROR_NONE;
 128         else if (!arg) {
 129                 warning("%s", _(mirror_advice));
 130                 *mirror = MIRROR_BOTH;
 131         }
 132         else if (!strcmp(arg, "fetch"))
 133                 *mirror = MIRROR_FETCH;
 134         else if (!strcmp(arg, "push"))
 135                 *mirror = MIRROR_PUSH;
 136         else
 137                 return error(_("unknown mirror argument: %s"), arg);
 138         return 0;
 139 }
 140
 141 static int add(int argc, const char **argv)
 142 {
 143         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 144         unsigned mirror = MIRROR_NONE;
 145         struct string_list track = STRING_LIST_INIT_NODUP;
 146         const char *master = NULL;
 147         struct remote *remote;
 148         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 149         const char *name, *url;
 150         int i;
 151
 152         struct option options[] = {
 153                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 154                 OPT_SET_INT(0, "tags", &fetch_tags,
 155                             N_("import all tags and associated objects when fetching"),
 156                             TAGS_SET),
 157                 OPT_SET_INT(0, NULL, &fetch_tags,
 158                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 159                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 160                                 N_("branch(es) to track")),
 161                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 162                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 163                         N_("set up remote as a mirror to push to or fetch from"),
 164                         PARSE_OPT_OPTARG, parse_mirror_opt },
 165                 OPT_END()
 166         };
 167
 168         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 169                              0);
 170
 171         if (argc != 2)
 172                 usage_with_options(builtin_remote_add_usage, options);
 173
 174         if (mirror && master)
 175                 die(_("specifying a master branch makes no sense with --mirror"));
 176         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 177                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 178
 179         name = argv[0];
 180         url = argv[1];
 181
 182         remote = remote_get(name);
 183         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 184                         remote->fetch_refspec_nr))
 185                 die(_("remote %s already exists."), name);
 186
 187         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 188         if (!valid_fetch_refspec(buf2.buf))
 189                 die(_("'%s' is not a valid remote name"), name);
 190
 191         strbuf_addf(&buf, "remote.%s.url", name);
 192         if (git_config_set(buf.buf, url))
 193                 return 1;
 194
 195         if (!mirror || mirror & MIRROR_FETCH) {
 196                 strbuf_reset(&buf);
 197                 strbuf_addf(&buf, "remote.%s.fetch", name);
 198                 if (track.nr == 0)
 199                         string_list_append(&track, "*");
 200                 for (i = 0; i < track.nr; i++) {
 201                         if (add_branch(buf.buf, track.items[i].string,
 202                                        name, mirror, &buf2))
 203                                 return 1;
 204                 }
 205         }
 206
 207         if (mirror & MIRROR_PUSH) {
 208                 strbuf_reset(&buf);
 209                 strbuf_addf(&buf, "remote.%s.mirror", name);
 210                 if (git_config_set(buf.buf, "true"))
 211                         return 1;
 212         }
 213
 214         if (fetch_tags != TAGS_DEFAULT) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 217                 if (git_config_set(buf.buf,
 218                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 219                         return 1;
 220         }
 221
 222         if (fetch && fetch_remote(name))
 223                 return 1;
 224
 225         if (master) {
 226                 strbuf_reset(&buf);
 227                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 228
 229                 strbuf_reset(&buf2);
 230                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 231
 232                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 233                         return error(_("Could not setup master '%s'"), master);
 234         }
 235
 236         strbuf_release(&buf);
 237         strbuf_release(&buf2);
 238         string_list_clear(&track, 0);
 239
 240         return 0;
 241 }
 242
 243 struct branch_info {
 244         char *remote_name;
 245         struct string_list merge;
 246         int rebase;
 247 };
 248
 249 static struct string_list branch_list;
 250
 251 static const char *abbrev_ref(const char *name, const char *prefix)
 252 {
 253         skip_prefix(name, prefix, &name);
 254         return name;
 255 }
 256 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 257
 258 static int config_read_branches(const char *key, const char *value, void *cb)
 259 {
 260         if (starts_with(key, "branch.")) {
 261                 const char *orig_key = key;
 262                 char *name;
 263                 struct string_list_item *item;
 264                 struct branch_info *info;
 265                 enum { REMOTE, MERGE, REBASE } type;
 266                 size_t key_len;
 267
 268                 key += 7;
 269                 if (strip_suffix(key, ".remote", &key_len)) {
 270                         name = xmemdupz(key, key_len);
 271                         type = REMOTE;
 272                 } else if (strip_suffix(key, ".merge", &key_len)) {
 273                         name = xmemdupz(key, key_len);
 274                         type = MERGE;
 275                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 276                         name = xmemdupz(key, key_len);
 277                         type = REBASE;
 278                 } else
 279                         return 0;
 280
 281                 item = string_list_insert(&branch_list, name);
 282
 283                 if (!item->util)
 284                         item->util = xcalloc(1, sizeof(struct branch_info));
 285                 info = item->util;
 286                 if (type == REMOTE) {
 287                         if (info->remote_name)
 288                                 warning(_("more than one %s"), orig_key);
 289                         info->remote_name = xstrdup(value);
 290                 } else if (type == MERGE) {
 291                         char *space = strchr(value, ' ');
 292                         value = abbrev_branch(value);
 293                         while (space) {
 294                                 char *merge;
 295                                 merge = xstrndup(value, space - value);
 296                                 string_list_append(&info->merge, merge);
 297                                 value = abbrev_branch(space + 1);
 298                                 space = strchr(value, ' ');
 299                         }
 300                         string_list_append(&info->merge, xstrdup(value));
 301                 } else {
 302                         int v = git_config_maybe_bool(orig_key, value);
 303                         if (v >= 0)
 304                                 info->rebase = v;
 305                         else if (!strcmp(value, "preserve"))
 306                                 info->rebase = 1;
 307                 }
 308         }
 309         return 0;
 310 }
 311
 312 static void read_branches(void)
 313 {
 314         if (branch_list.nr)
 315                 return;
 316         git_config(config_read_branches, NULL);
 317 }
 318
 319 struct ref_states {
 320         struct remote *remote;
 321         struct string_list new, stale, tracked, heads, push;
 322         int queried;
 323 };
 324
 325 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 326 {
 327         struct ref *fetch_map = NULL, **tail = &fetch_map;
 328         struct ref *ref, *stale_refs;
 329         int i;
 330
 331         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 332                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 333                         die(_("Could not get fetch map for refspec %s"),
 334                                 states->remote->fetch_refspec[i]);
 335
 336         states->new.strdup_strings = 1;
 337         states->tracked.strdup_strings = 1;
 338         states->stale.strdup_strings = 1;
 339         for (ref = fetch_map; ref; ref = ref->next) {
 340                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 341                         string_list_append(&states->new, abbrev_branch(ref->name));
 342                 else
 343                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 344         }
 345         stale_refs = get_stale_heads(states->remote->fetch,
 346                                      states->remote->fetch_refspec_nr, fetch_map);
 347         for (ref = stale_refs; ref; ref = ref->next) {
 348                 struct string_list_item *item =
 349                         string_list_append(&states->stale, abbrev_branch(ref->name));
 350                 item->util = xstrdup(ref->name);
 351         }
 352         free_refs(stale_refs);
 353         free_refs(fetch_map);
 354
 355         sort_string_list(&states->new);
 356         sort_string_list(&states->tracked);
 357         sort_string_list(&states->stale);
 358
 359         return 0;
 360 }
 361
 362 struct push_info {
 363         char *dest;
 364         int forced;
 365         enum {
 366                 PUSH_STATUS_CREATE = 0,
 367                 PUSH_STATUS_DELETE,
 368                 PUSH_STATUS_UPTODATE,
 369                 PUSH_STATUS_FASTFORWARD,
 370                 PUSH_STATUS_OUTOFDATE,
 371                 PUSH_STATUS_NOTQUERIED
 372         } status;
 373 };
 374
 375 static int get_push_ref_states(const struct ref *remote_refs,
 376         struct ref_states *states)
 377 {
 378         struct remote *remote = states->remote;
 379         struct ref *ref, *local_refs, *push_map;
 380         if (remote->mirror)
 381                 return 0;
 382
 383         local_refs = get_local_heads();
 384         push_map = copy_ref_list(remote_refs);
 385
 386         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 387                         remote->push_refspec, MATCH_REFS_NONE);
 388
 389         states->push.strdup_strings = 1;
 390         for (ref = push_map; ref; ref = ref->next) {
 391                 struct string_list_item *item;
 392                 struct push_info *info;
 393
 394                 if (!ref->peer_ref)
 395                         continue;
 396                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 397
 398                 item = string_list_append(&states->push,
 399                                           abbrev_branch(ref->peer_ref->name));
 400                 item->util = xcalloc(1, sizeof(struct push_info));
 401                 info = item->util;
 402                 info->forced = ref->force;
 403                 info->dest = xstrdup(abbrev_branch(ref->name));
 404
 405                 if (is_null_sha1(ref->new_sha1)) {
 406                         info->status = PUSH_STATUS_DELETE;
 407                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 408                         info->status = PUSH_STATUS_UPTODATE;
 409                 else if (is_null_sha1(ref->old_sha1))
 410                         info->status = PUSH_STATUS_CREATE;
 411                 else if (has_sha1_file(ref->old_sha1) &&
 412                          ref_newer(ref->new_sha1, ref->old_sha1))
 413                         info->status = PUSH_STATUS_FASTFORWARD;
 414                 else
 415                         info->status = PUSH_STATUS_OUTOFDATE;
 416         }
 417         free_refs(local_refs);
 418         free_refs(push_map);
 419         return 0;
 420 }
 421
 422 static int get_push_ref_states_noquery(struct ref_states *states)
 423 {
 424         int i;
 425         struct remote *remote = states->remote;
 426         struct string_list_item *item;
 427         struct push_info *info;
 428
 429         if (remote->mirror)
 430                 return 0;
 431
 432         states->push.strdup_strings = 1;
 433         if (!remote->push_refspec_nr) {
 434                 item = string_list_append(&states->push, _("(matching)"));
 435                 info = item->util = xcalloc(1, sizeof(struct push_info));
 436                 info->status = PUSH_STATUS_NOTQUERIED;
 437                 info->dest = xstrdup(item->string);
 438         }
 439         for (i = 0; i < remote->push_refspec_nr; i++) {
 440                 struct refspec *spec = remote->push + i;
 441                 if (spec->matching)
 442                         item = string_list_append(&states->push, _("(matching)"));
 443                 else if (strlen(spec->src))
 444                         item = string_list_append(&states->push, spec->src);
 445                 else
 446                         item = string_list_append(&states->push, _("(delete)"));
 447
 448                 info = item->util = xcalloc(1, sizeof(struct push_info));
 449                 info->forced = spec->force;
 450                 info->status = PUSH_STATUS_NOTQUERIED;
 451                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 452         }
 453         return 0;
 454 }
 455
 456 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 457 {
 458         struct ref *ref, *matches;
 459         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 460         struct refspec refspec;
 461
 462         refspec.force = 0;
 463         refspec.pattern = 1;
 464         refspec.src = refspec.dst = "refs/heads/*";
 465         states->heads.strdup_strings = 1;
 466         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 467         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 468                                     fetch_map, 1);
 469         for (ref = matches; ref; ref = ref->next)
 470                 string_list_append(&states->heads, abbrev_branch(ref->name));
 471
 472         free_refs(fetch_map);
 473         free_refs(matches);
 474
 475         return 0;
 476 }
 477
 478 struct known_remote {
 479         struct known_remote *next;
 480         struct remote *remote;
 481 };
 482
 483 struct known_remotes {
 484         struct remote *to_delete;
 485         struct known_remote *list;
 486 };
 487
 488 static int add_known_remote(struct remote *remote, void *cb_data)
 489 {
 490         struct known_remotes *all = cb_data;
 491         struct known_remote *r;
 492
 493         if (!strcmp(all->to_delete->name, remote->name))
 494                 return 0;
 495
 496         r = xmalloc(sizeof(*r));
 497         r->remote = remote;
 498         r->next = all->list;
 499         all->list = r;
 500         return 0;
 501 }
 502
 503 struct branches_for_remote {
 504         struct remote *remote;
 505         struct string_list *branches, *skipped;
 506         struct known_remotes *keep;
 507 };
 508
 509 static int add_branch_for_removal(const char *refname,
 510         const unsigned char *sha1, int flags, void *cb_data)
 511 {
 512         struct branches_for_remote *branches = cb_data;
 513         struct refspec refspec;
 514         struct string_list_item *item;
 515         struct known_remote *kr;
 516
 517         memset(&refspec, 0, sizeof(refspec));
 518         refspec.dst = (char *)refname;
 519         if (remote_find_tracking(branches->remote, &refspec))
 520                 return 0;
 521
 522         /* don't delete a branch if another remote also uses it */
 523         for (kr = branches->keep->list; kr; kr = kr->next) {
 524                 memset(&refspec, 0, sizeof(refspec));
 525                 refspec.dst = (char *)refname;
 526                 if (!remote_find_tracking(kr->remote, &refspec))
 527                         return 0;
 528         }
 529
 530         /* don't delete non-remote-tracking refs */
 531         if (!starts_with(refname, "refs/remotes/")) {
 532                 /* advise user how to delete local branches */
 533                 if (starts_with(refname, "refs/heads/"))
 534                         string_list_append(branches->skipped,
 535                                            abbrev_branch(refname));
 536                 /* silently skip over other non-remote refs */
 537                 return 0;
 538         }
 539
 540         /* make sure that symrefs are deleted */
 541         if (flags & REF_ISSYMREF)
 542                 return unlink(git_path("%s", refname));
 543
 544         item = string_list_append(branches->branches, refname);
 545         item->util = xmalloc(20);
 546         hashcpy(item->util, sha1);
 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 unsigned char *sha1, 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         unsigned char orig_sha1[20];
 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_sha1, &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         char *path = NULL;
 586
 587         strbuf_addf(&buf, "remote.%s.url", remote->name);
 588         for (i = 0; i < remote->url_nr; i++)
 589                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 590                         return error(_("Could not append '%s' to '%s'"),
 591                                         remote->url[i], buf.buf);
 592         strbuf_reset(&buf);
 593         strbuf_addf(&buf, "remote.%s.push", remote->name);
 594         for (i = 0; i < remote->push_refspec_nr; i++)
 595                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 596                         return error(_("Could not append '%s' to '%s'"),
 597                                         remote->push_refspec[i], buf.buf);
 598         strbuf_reset(&buf);
 599         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 600         for (i = 0; i < remote->fetch_refspec_nr; i++)
 601                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 602                         return error(_("Could not append '%s' to '%s'"),
 603                                         remote->fetch_refspec[i], buf.buf);
 604         if (remote->origin == REMOTE_REMOTES)
 605                 path = git_path("remotes/%s", remote->name);
 606         else if (remote->origin == REMOTE_BRANCHES)
 607                 path = git_path("branches/%s", remote->name);
 608         if (path)
 609                 unlink_or_warn(path);
 610         return 0;
 611 }
 612
 613 static int mv(int argc, const char **argv)
 614 {
 615         struct option options[] = {
 616                 OPT_END()
 617         };
 618         struct remote *oldremote, *newremote;
 619         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 620                 old_remote_context = STRBUF_INIT;
 621         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 622         struct rename_info rename;
 623         int i, refspec_updated = 0;
 624
 625         if (argc != 3)
 626                 usage_with_options(builtin_remote_rename_usage, options);
 627
 628         rename.old = argv[1];
 629         rename.new = argv[2];
 630         rename.remote_branches = &remote_branches;
 631
 632         oldremote = remote_get(rename.old);
 633         if (!oldremote)
 634                 die(_("No such remote: %s"), rename.old);
 635
 636         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 637                 return migrate_file(oldremote);
 638
 639         newremote = remote_get(rename.new);
 640         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 641                 die(_("remote %s already exists."), rename.new);
 642
 643         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 644         if (!valid_fetch_refspec(buf.buf))
 645                 die(_("'%s' is not a valid remote name"), rename.new);
 646
 647         strbuf_reset(&buf);
 648         strbuf_addf(&buf, "remote.%s", rename.old);
 649         strbuf_addf(&buf2, "remote.%s", rename.new);
 650         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 651                 return error(_("Could not rename config section '%s' to '%s'"),
 652                                 buf.buf, buf2.buf);
 653
 654         strbuf_reset(&buf);
 655         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 656         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 657                 return error(_("Could not remove config section '%s'"), buf.buf);
 658         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 659         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 660                 char *ptr;
 661
 662                 strbuf_reset(&buf2);
 663                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 664                 ptr = strstr(buf2.buf, old_remote_context.buf);
 665                 if (ptr) {
 666                         refspec_updated = 1;
 667                         strbuf_splice(&buf2,
 668                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 669                                       strlen(rename.old), rename.new,
 670                                       strlen(rename.new));
 671                 } else
 672                         warning(_("Not updating non-default fetch refspec\n"
 673                                   "\t%s\n"
 674                                   "\tPlease update the configuration manually if necessary."),
 675                                 buf2.buf);
 676
 677                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 678                         return error(_("Could not append '%s'"), buf.buf);
 679         }
 680
 681         read_branches();
 682         for (i = 0; i < branch_list.nr; i++) {
 683                 struct string_list_item *item = branch_list.items + i;
 684                 struct branch_info *info = item->util;
 685                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 686                         strbuf_reset(&buf);
 687                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 688                         if (git_config_set(buf.buf, rename.new)) {
 689                                 return error(_("Could not set '%s'"), buf.buf);
 690                         }
 691                 }
 692         }
 693
 694         if (!refspec_updated)
 695                 return 0;
 696
 697         /*
 698          * First remove symrefs, then rename the rest, finally create
 699          * the new symrefs.
 700          */
 701         for_each_ref(read_remote_branches, &rename);
 702         for (i = 0; i < remote_branches.nr; i++) {
 703                 struct string_list_item *item = remote_branches.items + i;
 704                 int flag = 0;
 705                 unsigned char sha1[20];
 706
 707                 read_ref_full(item->string, RESOLVE_REF_READING, sha1, &flag);
 708                 if (!(flag & REF_ISSYMREF))
 709                         continue;
 710                 if (delete_ref(item->string, NULL, REF_NODEREF))
 711                         die(_("deleting '%s' failed"), item->string);
 712         }
 713         for (i = 0; i < remote_branches.nr; i++) {
 714                 struct string_list_item *item = remote_branches.items + i;
 715
 716                 if (item->util)
 717                         continue;
 718                 strbuf_reset(&buf);
 719                 strbuf_addstr(&buf, item->string);
 720                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 721                                 rename.new, strlen(rename.new));
 722                 strbuf_reset(&buf2);
 723                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 724                                 item->string, buf.buf);
 725                 if (rename_ref(item->string, buf.buf, buf2.buf))
 726                         die(_("renaming '%s' failed"), item->string);
 727         }
 728         for (i = 0; i < remote_branches.nr; i++) {
 729                 struct string_list_item *item = remote_branches.items + i;
 730
 731                 if (!item->util)
 732                         continue;
 733                 strbuf_reset(&buf);
 734                 strbuf_addstr(&buf, item->string);
 735                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 736                                 rename.new, strlen(rename.new));
 737                 strbuf_reset(&buf2);
 738                 strbuf_addstr(&buf2, item->util);
 739                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 740                                 rename.new, strlen(rename.new));
 741                 strbuf_reset(&buf3);
 742                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 743                                 item->string, buf.buf);
 744                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 745                         die(_("creating '%s' failed"), buf.buf);
 746         }
 747         return 0;
 748 }
 749
 750 static int remove_branches(struct string_list *branches)
 751 {
 752         struct strbuf err = STRBUF_INIT;
 753         const char **branch_names;
 754         int i, result = 0;
 755
 756         branch_names = xmalloc(branches->nr * sizeof(*branch_names));
 757         for (i = 0; i < branches->nr; i++)
 758                 branch_names[i] = branches->items[i].string;
 759         if (repack_without_refs(branch_names, branches->nr, &err))
 760                 result |= error("%s", err.buf);
 761         strbuf_release(&err);
 762         free(branch_names);
 763
 764         for (i = 0; i < branches->nr; i++) {
 765                 struct string_list_item *item = branches->items + i;
 766                 const char *refname = item->string;
 767
 768                 if (delete_ref(refname, NULL, 0))
 769                         result |= error(_("Could not remove branch %s"), refname);
 770         }
 771
 772         return result;
 773 }
 774
 775 static int rm(int argc, const char **argv)
 776 {
 777         struct option options[] = {
 778                 OPT_END()
 779         };
 780         struct remote *remote;
 781         struct strbuf buf = STRBUF_INIT;
 782         struct known_remotes known_remotes = { NULL, NULL };
 783         struct string_list branches = STRING_LIST_INIT_DUP;
 784         struct string_list skipped = STRING_LIST_INIT_DUP;
 785         struct branches_for_remote cb_data;
 786         int i, result;
 787
 788         memset(&cb_data, 0, sizeof(cb_data));
 789         cb_data.branches = &branches;
 790         cb_data.skipped = &skipped;
 791         cb_data.keep = &known_remotes;
 792
 793         if (argc != 2)
 794                 usage_with_options(builtin_remote_rm_usage, options);
 795
 796         remote = remote_get(argv[1]);
 797         if (!remote)
 798                 die(_("No such remote: %s"), argv[1]);
 799
 800         known_remotes.to_delete = remote;
 801         for_each_remote(add_known_remote, &known_remotes);
 802
 803         read_branches();
 804         for (i = 0; i < branch_list.nr; i++) {
 805                 struct string_list_item *item = branch_list.items + i;
 806                 struct branch_info *info = item->util;
 807                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 808                         const char *keys[] = { "remote", "merge", NULL }, **k;
 809                         for (k = keys; *k; k++) {
 810                                 strbuf_reset(&buf);
 811                                 strbuf_addf(&buf, "branch.%s.%s",
 812                                                 item->string, *k);
 813                                 if (git_config_set(buf.buf, NULL)) {
 814                                         strbuf_release(&buf);
 815                                         return -1;
 816                                 }
 817                         }
 818                 }
 819         }
 820
 821         /*
 822          * We cannot just pass a function to for_each_ref() which deletes
 823          * the branches one by one, since for_each_ref() relies on cached
 824          * refs, which are invalidated when deleting a branch.
 825          */
 826         cb_data.remote = remote;
 827         result = for_each_ref(add_branch_for_removal, &cb_data);
 828         strbuf_release(&buf);
 829
 830         if (!result)
 831                 result = remove_branches(&branches);
 832         string_list_clear(&branches, 1);
 833
 834         if (skipped.nr) {
 835                 fprintf_ln(stderr,
 836                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 837                               "to delete it, use:",
 838                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 839                               "to delete them, use:",
 840                               skipped.nr));
 841                 for (i = 0; i < skipped.nr; i++)
 842                         fprintf(stderr, "  git branch -d %s\n",
 843                                 skipped.items[i].string);
 844         }
 845         string_list_clear(&skipped, 0);
 846
 847         if (!result) {
 848                 strbuf_addf(&buf, "remote.%s", remote->name);
 849                 if (git_config_rename_section(buf.buf, NULL) < 1)
 850                         return error(_("Could not remove config section '%s'"), buf.buf);
 851         }
 852
 853         return result;
 854 }
 855
 856 static void clear_push_info(void *util, const char *string)
 857 {
 858         struct push_info *info = util;
 859         free(info->dest);
 860         free(info);
 861 }
 862
 863 static void free_remote_ref_states(struct ref_states *states)
 864 {
 865         string_list_clear(&states->new, 0);
 866         string_list_clear(&states->stale, 1);
 867         string_list_clear(&states->tracked, 0);
 868         string_list_clear(&states->heads, 0);
 869         string_list_clear_func(&states->push, clear_push_info);
 870 }
 871
 872 static int append_ref_to_tracked_list(const char *refname,
 873         const unsigned char *sha1, int flags, void *cb_data)
 874 {
 875         struct ref_states *states = cb_data;
 876         struct refspec refspec;
 877
 878         if (flags & REF_ISSYMREF)
 879                 return 0;
 880
 881         memset(&refspec, 0, sizeof(refspec));
 882         refspec.dst = (char *)refname;
 883         if (!remote_find_tracking(states->remote, &refspec))
 884                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 885
 886         return 0;
 887 }
 888
 889 static int get_remote_ref_states(const char *name,
 890                                  struct ref_states *states,
 891                                  int query)
 892 {
 893         struct transport *transport;
 894         const struct ref *remote_refs;
 895
 896         states->remote = remote_get(name);
 897         if (!states->remote)
 898                 return error(_("No such remote: %s"), name);
 899
 900         read_branches();
 901
 902         if (query) {
 903                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 904                         states->remote->url[0] : NULL);
 905                 remote_refs = transport_get_remote_refs(transport);
 906                 transport_disconnect(transport);
 907
 908                 states->queried = 1;
 909                 if (query & GET_REF_STATES)
 910                         get_ref_states(remote_refs, states);
 911                 if (query & GET_HEAD_NAMES)
 912                         get_head_names(remote_refs, states);
 913                 if (query & GET_PUSH_REF_STATES)
 914                         get_push_ref_states(remote_refs, states);
 915         } else {
 916                 for_each_ref(append_ref_to_tracked_list, states);
 917                 sort_string_list(&states->tracked);
 918                 get_push_ref_states_noquery(states);
 919         }
 920
 921         return 0;
 922 }
 923
 924 struct show_info {
 925         struct string_list *list;
 926         struct ref_states *states;
 927         int width, width2;
 928         int any_rebase;
 929 };
 930
 931 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 932 {
 933         struct show_info *info = cb_data;
 934         int n = strlen(item->string);
 935         if (n > info->width)
 936                 info->width = n;
 937         string_list_insert(info->list, item->string);
 938         return 0;
 939 }
 940
 941 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 942 {
 943         struct show_info *info = cb_data;
 944         struct ref_states *states = info->states;
 945         const char *name = item->string;
 946
 947         if (states->queried) {
 948                 const char *fmt = "%s";
 949                 const char *arg = "";
 950                 if (string_list_has_string(&states->new, name)) {
 951                         fmt = _(" new (next fetch will store in remotes/%s)");
 952                         arg = states->remote->name;
 953                 } else if (string_list_has_string(&states->tracked, name))
 954                         arg = _(" tracked");
 955                 else if (string_list_has_string(&states->stale, name))
 956                         arg = _(" stale (use 'git remote prune' to remove)");
 957                 else
 958                         arg = _(" ???");
 959                 printf("    %-*s", info->width, name);
 960                 printf(fmt, arg);
 961                 printf("\n");
 962         } else
 963                 printf("    %s\n", name);
 964
 965         return 0;
 966 }
 967
 968 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 969 {
 970         struct show_info *show_info = cb_data;
 971         struct ref_states *states = show_info->states;
 972         struct branch_info *branch_info = branch_item->util;
 973         struct string_list_item *item;
 974         int n;
 975
 976         if (!branch_info->merge.nr || !branch_info->remote_name ||
 977             strcmp(states->remote->name, branch_info->remote_name))
 978                 return 0;
 979         if ((n = strlen(branch_item->string)) > show_info->width)
 980                 show_info->width = n;
 981         if (branch_info->rebase)
 982                 show_info->any_rebase = 1;
 983
 984         item = string_list_insert(show_info->list, branch_item->string);
 985         item->util = branch_info;
 986
 987         return 0;
 988 }
 989
 990 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 991 {
 992         struct show_info *show_info = cb_data;
 993         struct branch_info *branch_info = item->util;
 994         struct string_list *merge = &branch_info->merge;
 995         const char *also;
 996         int i;
 997
 998         if (branch_info->rebase && branch_info->merge.nr > 1) {
 999                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
1000                         item->string);
1001                 return 0;
1002         }
1003
1004         printf("    %-*s ", show_info->width, item->string);
1005         if (branch_info->rebase) {
1006                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1007                 return 0;
1008         } else if (show_info->any_rebase) {
1009                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1010                 also = _("    and with remote");
1011         } else {
1012                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1013                 also = _("   and with remote");
1014         }
1015         for (i = 1; i < merge->nr; i++)
1016                 printf("    %-*s %s %s\n", show_info->width, "", also,
1017                        merge->items[i].string);
1018
1019         return 0;
1020 }
1021
1022 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1023 {
1024         struct show_info *show_info = cb_data;
1025         struct push_info *push_info = push_item->util;
1026         struct string_list_item *item;
1027         int n;
1028         if ((n = strlen(push_item->string)) > show_info->width)
1029                 show_info->width = n;
1030         if ((n = strlen(push_info->dest)) > show_info->width2)
1031                 show_info->width2 = n;
1032         item = string_list_append(show_info->list, push_item->string);
1033         item->util = push_item->util;
1034         return 0;
1035 }
1036
1037 /*
1038  * Sorting comparison for a string list that has push_info
1039  * structs in its util field
1040  */
1041 static int cmp_string_with_push(const void *va, const void *vb)
1042 {
1043         const struct string_list_item *a = va;
1044         const struct string_list_item *b = vb;
1045         const struct push_info *a_push = a->util;
1046         const struct push_info *b_push = b->util;
1047         int cmp = strcmp(a->string, b->string);
1048         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1049 }
1050
1051 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1052 {
1053         struct show_info *show_info = cb_data;
1054         struct push_info *push_info = item->util;
1055         const char *src = item->string, *status = NULL;
1056
1057         switch (push_info->status) {
1058         case PUSH_STATUS_CREATE:
1059                 status = _("create");
1060                 break;
1061         case PUSH_STATUS_DELETE:
1062                 status = _("delete");
1063                 src = _("(none)");
1064                 break;
1065         case PUSH_STATUS_UPTODATE:
1066                 status = _("up to date");
1067                 break;
1068         case PUSH_STATUS_FASTFORWARD:
1069                 status = _("fast-forwardable");
1070                 break;
1071         case PUSH_STATUS_OUTOFDATE:
1072                 status = _("local out of date");
1073                 break;
1074         case PUSH_STATUS_NOTQUERIED:
1075                 break;
1076         }
1077         if (status) {
1078                 if (push_info->forced)
1079                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1080                                show_info->width2, push_info->dest, status);
1081                 else
1082                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1083                                show_info->width2, push_info->dest, status);
1084         } else {
1085                 if (push_info->forced)
1086                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1087                                push_info->dest);
1088                 else
1089                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1090                                push_info->dest);
1091         }
1092         return 0;
1093 }
1094
1095 static int get_one_entry(struct remote *remote, void *priv)
1096 {
1097         struct string_list *list = priv;
1098         struct strbuf url_buf = STRBUF_INIT;
1099         const char **url;
1100         int i, url_nr;
1101
1102         if (remote->url_nr > 0) {
1103                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1104                 string_list_append(list, remote->name)->util =
1105                                 strbuf_detach(&url_buf, NULL);
1106         } else
1107                 string_list_append(list, remote->name)->util = NULL;
1108         if (remote->pushurl_nr) {
1109                 url = remote->pushurl;
1110                 url_nr = remote->pushurl_nr;
1111         } else {
1112                 url = remote->url;
1113                 url_nr = remote->url_nr;
1114         }
1115         for (i = 0; i < url_nr; i++)
1116         {
1117                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1118                 string_list_append(list, remote->name)->util =
1119                                 strbuf_detach(&url_buf, NULL);
1120         }
1121
1122         return 0;
1123 }
1124
1125 static int show_all(void)
1126 {
1127         struct string_list list = STRING_LIST_INIT_NODUP;
1128         int result;
1129
1130         list.strdup_strings = 1;
1131         result = for_each_remote(get_one_entry, &list);
1132
1133         if (!result) {
1134                 int i;
1135
1136                 sort_string_list(&list);
1137                 for (i = 0; i < list.nr; i++) {
1138                         struct string_list_item *item = list.items + i;
1139                         if (verbose)
1140                                 printf("%s\t%s\n", item->string,
1141                                         item->util ? (const char *)item->util : "");
1142                         else {
1143                                 if (i && !strcmp((item - 1)->string, item->string))
1144                                         continue;
1145                                 printf("%s\n", item->string);
1146                         }
1147                 }
1148         }
1149         string_list_clear(&list, 1);
1150         return result;
1151 }
1152
1153 static int show(int argc, const char **argv)
1154 {
1155         int no_query = 0, result = 0, query_flag = 0;
1156         struct option options[] = {
1157                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1158                 OPT_END()
1159         };
1160         struct ref_states states;
1161         struct string_list info_list = STRING_LIST_INIT_NODUP;
1162         struct show_info info;
1163
1164         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1165                              0);
1166
1167         if (argc < 1)
1168                 return show_all();
1169
1170         if (!no_query)
1171                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1172
1173         memset(&states, 0, sizeof(states));
1174         memset(&info, 0, sizeof(info));
1175         info.states = &states;
1176         info.list = &info_list;
1177         for (; argc; argc--, argv++) {
1178                 int i;
1179                 const char **url;
1180                 int url_nr;
1181
1182                 get_remote_ref_states(*argv, &states, query_flag);
1183
1184                 printf_ln(_("* remote %s"), *argv);
1185                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1186                        states.remote->url[0] : _("(no URL)"));
1187                 if (states.remote->pushurl_nr) {
1188                         url = states.remote->pushurl;
1189                         url_nr = states.remote->pushurl_nr;
1190                 } else {
1191                         url = states.remote->url;
1192                         url_nr = states.remote->url_nr;
1193                 }
1194                 for (i = 0; i < url_nr; i++)
1195                         printf_ln(_("  Push  URL: %s"), url[i]);
1196                 if (!i)
1197                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1198                 if (no_query)
1199                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1200                 else if (!states.heads.nr)
1201                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1202                 else if (states.heads.nr == 1)
1203                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1204                 else {
1205                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1206                                  " may be one of the following):\n"));
1207                         for (i = 0; i < states.heads.nr; i++)
1208                                 printf("    %s\n", states.heads.items[i].string);
1209                 }
1210
1211                 /* remote branch info */
1212                 info.width = 0;
1213                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1214                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1215                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1216                 if (info.list->nr)
1217                         printf_ln(Q_("  Remote branch:%s",
1218                                      "  Remote branches:%s",
1219                                      info.list->nr),
1220                                   no_query ? _(" (status not queried)") : "");
1221                 for_each_string_list(info.list, show_remote_info_item, &info);
1222                 string_list_clear(info.list, 0);
1223
1224                 /* git pull info */
1225                 info.width = 0;
1226                 info.any_rebase = 0;
1227                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1228                 if (info.list->nr)
1229                         printf_ln(Q_("  Local branch configured for 'git pull':",
1230                                      "  Local branches configured for 'git pull':",
1231                                      info.list->nr));
1232                 for_each_string_list(info.list, show_local_info_item, &info);
1233                 string_list_clear(info.list, 0);
1234
1235                 /* git push info */
1236                 if (states.remote->mirror)
1237                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1238
1239                 info.width = info.width2 = 0;
1240                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1241                 qsort(info.list->items, info.list->nr,
1242                         sizeof(*info.list->items), cmp_string_with_push);
1243                 if (info.list->nr)
1244                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1245                                      "  Local refs configured for 'git push'%s:",
1246                                      info.list->nr),
1247                                   no_query ? _(" (status not queried)") : "");
1248                 for_each_string_list(info.list, show_push_info_item, &info);
1249                 string_list_clear(info.list, 0);
1250
1251                 free_remote_ref_states(&states);
1252         }
1253
1254         return result;
1255 }
1256
1257 static int set_head(int argc, const char **argv)
1258 {
1259         int i, opt_a = 0, opt_d = 0, result = 0;
1260         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1261         char *head_name = NULL;
1262
1263         struct option options[] = {
1264                 OPT_BOOL('a', "auto", &opt_a,
1265                          N_("set refs/remotes/<name>/HEAD according to remote")),
1266                 OPT_BOOL('d', "delete", &opt_d,
1267                          N_("delete refs/remotes/<name>/HEAD")),
1268                 OPT_END()
1269         };
1270         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1271                              0);
1272         if (argc)
1273                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1274
1275         if (!opt_a && !opt_d && argc == 2) {
1276                 head_name = xstrdup(argv[1]);
1277         } else if (opt_a && !opt_d && argc == 1) {
1278                 struct ref_states states;
1279                 memset(&states, 0, sizeof(states));
1280                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1281                 if (!states.heads.nr)
1282                         result |= error(_("Cannot determine remote HEAD"));
1283                 else if (states.heads.nr > 1) {
1284                         result |= error(_("Multiple remote HEAD branches. "
1285                                           "Please choose one explicitly with:"));
1286                         for (i = 0; i < states.heads.nr; i++)
1287                                 fprintf(stderr, "  git remote set-head %s %s\n",
1288                                         argv[0], states.heads.items[i].string);
1289                 } else
1290                         head_name = xstrdup(states.heads.items[0].string);
1291                 free_remote_ref_states(&states);
1292         } else if (opt_d && !opt_a && argc == 1) {
1293                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1294                         result |= error(_("Could not delete %s"), buf.buf);
1295         } else
1296                 usage_with_options(builtin_remote_sethead_usage, options);
1297
1298         if (head_name) {
1299                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1300                 /* make sure it's valid */
1301                 if (!ref_exists(buf2.buf))
1302                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1303                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1304                         result |= error(_("Could not setup %s"), buf.buf);
1305                 if (opt_a)
1306                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1307                 free(head_name);
1308         }
1309
1310         strbuf_release(&buf);
1311         strbuf_release(&buf2);
1312         return result;
1313 }
1314
1315 static int prune_remote(const char *remote, int dry_run)
1316 {
1317         int result = 0, i;
1318         struct ref_states states;
1319         struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1320         const char **delete_refs;
1321         const char *dangling_msg = dry_run
1322                 ? _(" %s will become dangling!")
1323                 : _(" %s has become dangling!");
1324
1325         memset(&states, 0, sizeof(states));
1326         get_remote_ref_states(remote, &states, GET_REF_STATES);
1327
1328         if (states.stale.nr) {
1329                 printf_ln(_("Pruning %s"), remote);
1330                 printf_ln(_("URL: %s"),
1331                        states.remote->url_nr
1332                        ? states.remote->url[0]
1333                        : _("(no URL)"));
1334
1335                 delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1336                 for (i = 0; i < states.stale.nr; i++)
1337                         delete_refs[i] = states.stale.items[i].util;
1338                 if (!dry_run) {
1339                         struct strbuf err = STRBUF_INIT;
1340                         if (repack_without_refs(delete_refs, states.stale.nr,
1341                                                 &err))
1342                                 result |= error("%s", err.buf);
1343                         strbuf_release(&err);
1344                 }
1345                 free(delete_refs);
1346         }
1347
1348         for (i = 0; i < states.stale.nr; i++) {
1349                 const char *refname = states.stale.items[i].util;
1350
1351                 string_list_insert(&delete_refs_list, refname);
1352
1353                 if (!dry_run)
1354                         result |= delete_ref(refname, NULL, 0);
1355
1356                 if (dry_run)
1357                         printf_ln(_(" * [would prune] %s"),
1358                                abbrev_ref(refname, "refs/remotes/"));
1359                 else
1360                         printf_ln(_(" * [pruned] %s"),
1361                                abbrev_ref(refname, "refs/remotes/"));
1362         }
1363
1364         warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1365         string_list_clear(&delete_refs_list, 0);
1366
1367         free_remote_ref_states(&states);
1368         return result;
1369 }
1370
1371 static int prune(int argc, const char **argv)
1372 {
1373         int dry_run = 0, result = 0;
1374         struct option options[] = {
1375                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1376                 OPT_END()
1377         };
1378
1379         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1380                              0);
1381
1382         if (argc < 1)
1383                 usage_with_options(builtin_remote_prune_usage, options);
1384
1385         for (; argc; argc--, argv++)
1386                 result |= prune_remote(*argv, dry_run);
1387
1388         return result;
1389 }
1390
1391 static int get_remote_default(const char *key, const char *value, void *priv)
1392 {
1393         if (strcmp(key, "remotes.default") == 0) {
1394                 int *found = priv;
1395                 *found = 1;
1396         }
1397         return 0;
1398 }
1399
1400 static int update(int argc, const char **argv)
1401 {
1402         int i, prune = -1;
1403         struct option options[] = {
1404                 OPT_BOOL('p', "prune", &prune,
1405                          N_("prune remotes after fetching")),
1406                 OPT_END()
1407         };
1408         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1409         int default_defined = 0;
1410         int retval;
1411
1412         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1413                              PARSE_OPT_KEEP_ARGV0);
1414
1415         argv_array_push(&fetch_argv, "fetch");
1416
1417         if (prune != -1)
1418                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1419         if (verbose)
1420                 argv_array_push(&fetch_argv, "-v");
1421         argv_array_push(&fetch_argv, "--multiple");
1422         if (argc < 2)
1423                 argv_array_push(&fetch_argv, "default");
1424         for (i = 1; i < argc; i++)
1425                 argv_array_push(&fetch_argv, argv[i]);
1426
1427         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1428                 git_config(get_remote_default, &default_defined);
1429                 if (!default_defined) {
1430                         argv_array_pop(&fetch_argv);
1431                         argv_array_push(&fetch_argv, "--all");
1432                 }
1433         }
1434
1435         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1436         argv_array_clear(&fetch_argv);
1437         return retval;
1438 }
1439
1440 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1441 {
1442         return git_config_set_multivar(key, NULL, NULL, 1);
1443 }
1444
1445 static int add_branches(struct remote *remote, const char **branches,
1446                         const char *key)
1447 {
1448         const char *remotename = remote->name;
1449         int mirror = remote->mirror;
1450         struct strbuf refspec = STRBUF_INIT;
1451
1452         for (; *branches; branches++)
1453                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1454                         strbuf_release(&refspec);
1455                         return 1;
1456                 }
1457
1458         strbuf_release(&refspec);
1459         return 0;
1460 }
1461
1462 static int set_remote_branches(const char *remotename, const char **branches,
1463                                 int add_mode)
1464 {
1465         struct strbuf key = STRBUF_INIT;
1466         struct remote *remote;
1467
1468         strbuf_addf(&key, "remote.%s.fetch", remotename);
1469
1470         if (!remote_is_configured(remotename))
1471                 die(_("No such remote '%s'"), remotename);
1472         remote = remote_get(remotename);
1473
1474         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1475                 strbuf_release(&key);
1476                 return 1;
1477         }
1478         if (add_branches(remote, branches, key.buf)) {
1479                 strbuf_release(&key);
1480                 return 1;
1481         }
1482
1483         strbuf_release(&key);
1484         return 0;
1485 }
1486
1487 static int set_branches(int argc, const char **argv)
1488 {
1489         int add_mode = 0;
1490         struct option options[] = {
1491                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1492                 OPT_END()
1493         };
1494
1495         argc = parse_options(argc, argv, NULL, options,
1496                              builtin_remote_setbranches_usage, 0);
1497         if (argc == 0) {
1498                 error(_("no remote specified"));
1499                 usage_with_options(builtin_remote_setbranches_usage, options);
1500         }
1501         argv[argc] = NULL;
1502
1503         return set_remote_branches(argv[0], argv + 1, add_mode);
1504 }
1505
1506 static int set_url(int argc, const char **argv)
1507 {
1508         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1509         int matches = 0, negative_matches = 0;
1510         const char *remotename = NULL;
1511         const char *newurl = NULL;
1512         const char *oldurl = NULL;
1513         struct remote *remote;
1514         regex_t old_regex;
1515         const char **urlset;
1516         int urlset_nr;
1517         struct strbuf name_buf = STRBUF_INIT;
1518         struct option options[] = {
1519                 OPT_BOOL('\0', "push", &push_mode,
1520                          N_("manipulate push URLs")),
1521                 OPT_BOOL('\0', "add", &add_mode,
1522                          N_("add URL")),
1523                 OPT_BOOL('\0', "delete", &delete_mode,
1524                             N_("delete URLs")),
1525                 OPT_END()
1526         };
1527         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1528                              PARSE_OPT_KEEP_ARGV0);
1529
1530         if (add_mode && delete_mode)
1531                 die(_("--add --delete doesn't make sense"));
1532
1533         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1534                 usage_with_options(builtin_remote_seturl_usage, options);
1535
1536         remotename = argv[1];
1537         newurl = argv[2];
1538         if (argc > 3)
1539                 oldurl = argv[3];
1540
1541         if (delete_mode)
1542                 oldurl = newurl;
1543
1544         if (!remote_is_configured(remotename))
1545                 die(_("No such remote '%s'"), remotename);
1546         remote = remote_get(remotename);
1547
1548         if (push_mode) {
1549                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1550                 urlset = remote->pushurl;
1551                 urlset_nr = remote->pushurl_nr;
1552         } else {
1553                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1554                 urlset = remote->url;
1555                 urlset_nr = remote->url_nr;
1556         }
1557
1558         /* Special cases that add new entry. */
1559         if ((!oldurl && !delete_mode) || add_mode) {
1560                 if (add_mode)
1561                         git_config_set_multivar(name_buf.buf, newurl,
1562                                 "^$", 0);
1563                 else
1564                         git_config_set(name_buf.buf, newurl);
1565                 strbuf_release(&name_buf);
1566                 return 0;
1567         }
1568
1569         /* Old URL specified. Demand that one matches. */
1570         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1571                 die(_("Invalid old URL pattern: %s"), oldurl);
1572
1573         for (i = 0; i < urlset_nr; i++)
1574                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1575                         matches++;
1576                 else
1577                         negative_matches++;
1578         if (!delete_mode && !matches)
1579                 die(_("No such URL found: %s"), oldurl);
1580         if (delete_mode && !negative_matches && !push_mode)
1581                 die(_("Will not delete all non-push URLs"));
1582
1583         regfree(&old_regex);
1584
1585         if (!delete_mode)
1586                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1587         else
1588                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1589         return 0;
1590 }
1591
1592 int cmd_remote(int argc, const char **argv, const char *prefix)
1593 {
1594         struct option options[] = {
1595                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1596                 OPT_END()
1597         };
1598         int result;
1599
1600         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1601                 PARSE_OPT_STOP_AT_NON_OPTION);
1602
1603         if (argc < 1)
1604                 result = show_all();
1605         else if (!strcmp(argv[0], "add"))
1606                 result = add(argc, argv);
1607         else if (!strcmp(argv[0], "rename"))
1608                 result = mv(argc, argv);
1609         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1610                 result = rm(argc, argv);
1611         else if (!strcmp(argv[0], "set-head"))
1612                 result = set_head(argc, argv);
1613         else if (!strcmp(argv[0], "set-branches"))
1614                 result = set_branches(argc, argv);
1615         else if (!strcmp(argv[0], "set-url"))
1616                 result = set_url(argc, argv);
1617         else if (!strcmp(argv[0], "show"))
1618                 result = show(argc, argv);
1619         else if (!strcmp(argv[0], "prune"))
1620                 result = prune(argc, argv);
1621         else if (!strcmp(argv[0], "update"))
1622                 result = update(argc, argv);
1623         else {
1624                 error(_("Unknown subcommand: %s"), argv[0]);
1625                 usage_with_options(builtin_remote_usage, options);
1626         }
1627
1628         return result ? 1 : 0;
1629 }