git.oblomov.eu Git - git/blob - 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 ||
 184                         (strcmp(name, remote->url[0]) &&
 185                                 strcmp(url, remote->url[0])) ||
 186                         remote->fetch_refspec_nr))
 187                 die(_("remote %s already exists."), name);
 188
 189         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 190         if (!valid_fetch_refspec(buf2.buf))
 191                 die(_("'%s' is not a valid remote name"), name);
 192
 193         strbuf_addf(&buf, "remote.%s.url", name);
 194         if (git_config_set(buf.buf, url))
 195                 return 1;
 196
 197         if (!mirror || mirror & MIRROR_FETCH) {
 198                 strbuf_reset(&buf);
 199                 strbuf_addf(&buf, "remote.%s.fetch", name);
 200                 if (track.nr == 0)
 201                         string_list_append(&track, "*");
 202                 for (i = 0; i < track.nr; i++) {
 203                         if (add_branch(buf.buf, track.items[i].string,
 204                                        name, mirror, &buf2))
 205                                 return 1;
 206                 }
 207         }
 208
 209         if (mirror & MIRROR_PUSH) {
 210                 strbuf_reset(&buf);
 211                 strbuf_addf(&buf, "remote.%s.mirror", name);
 212                 if (git_config_set(buf.buf, "true"))
 213                         return 1;
 214         }
 215
 216         if (fetch_tags != TAGS_DEFAULT) {
 217                 strbuf_reset(&buf);
 218                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 219                 if (git_config_set(buf.buf,
 220                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 221                         return 1;
 222         }
 223
 224         if (fetch && fetch_remote(name))
 225                 return 1;
 226
 227         if (master) {
 228                 strbuf_reset(&buf);
 229                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 230
 231                 strbuf_reset(&buf2);
 232                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 233
 234                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 235                         return error(_("Could not setup master '%s'"), master);
 236         }
 237
 238         strbuf_release(&buf);
 239         strbuf_release(&buf2);
 240         string_list_clear(&track, 0);
 241
 242         return 0;
 243 }
 244
 245 struct branch_info {
 246         char *remote_name;
 247         struct string_list merge;
 248         int rebase;
 249 };
 250
 251 static struct string_list branch_list;
 252
 253 static const char *abbrev_ref(const char *name, const char *prefix)
 254 {
 255         skip_prefix(name, prefix, &name);
 256         return name;
 257 }
 258 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 259
 260 static int config_read_branches(const char *key, const char *value, void *cb)
 261 {
 262         if (starts_with(key, "branch.")) {
 263                 const char *orig_key = key;
 264                 char *name;
 265                 struct string_list_item *item;
 266                 struct branch_info *info;
 267                 enum { REMOTE, MERGE, REBASE } type;
 268                 size_t key_len;
 269
 270                 key += 7;
 271                 if (strip_suffix(key, ".remote", &key_len)) {
 272                         name = xmemdupz(key, key_len);
 273                         type = REMOTE;
 274                 } else if (strip_suffix(key, ".merge", &key_len)) {
 275                         name = xmemdupz(key, key_len);
 276                         type = MERGE;
 277                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 278                         name = xmemdupz(key, key_len);
 279                         type = REBASE;
 280                 } else
 281                         return 0;
 282
 283                 item = string_list_insert(&branch_list, name);
 284
 285                 if (!item->util)
 286                         item->util = xcalloc(1, sizeof(struct branch_info));
 287                 info = item->util;
 288                 if (type == REMOTE) {
 289                         if (info->remote_name)
 290                                 warning(_("more than one %s"), orig_key);
 291                         info->remote_name = xstrdup(value);
 292                 } else if (type == MERGE) {
 293                         char *space = strchr(value, ' ');
 294                         value = abbrev_branch(value);
 295                         while (space) {
 296                                 char *merge;
 297                                 merge = xstrndup(value, space - value);
 298                                 string_list_append(&info->merge, merge);
 299                                 value = abbrev_branch(space + 1);
 300                                 space = strchr(value, ' ');
 301                         }
 302                         string_list_append(&info->merge, xstrdup(value));
 303                 } else {
 304                         int v = git_config_maybe_bool(orig_key, value);
 305                         if (v >= 0)
 306                                 info->rebase = v;
 307                         else if (!strcmp(value, "preserve"))
 308                                 info->rebase = 1;
 309                 }
 310         }
 311         return 0;
 312 }
 313
 314 static void read_branches(void)
 315 {
 316         if (branch_list.nr)
 317                 return;
 318         git_config(config_read_branches, NULL);
 319 }
 320
 321 struct ref_states {
 322         struct remote *remote;
 323         struct string_list new, stale, tracked, heads, push;
 324         int queried;
 325 };
 326
 327 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 328 {
 329         struct ref *fetch_map = NULL, **tail = &fetch_map;
 330         struct ref *ref, *stale_refs;
 331         int i;
 332
 333         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 334                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 335                         die(_("Could not get fetch map for refspec %s"),
 336                                 states->remote->fetch_refspec[i]);
 337
 338         states->new.strdup_strings = 1;
 339         states->tracked.strdup_strings = 1;
 340         states->stale.strdup_strings = 1;
 341         for (ref = fetch_map; ref; ref = ref->next) {
 342                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 343                         string_list_append(&states->new, abbrev_branch(ref->name));
 344                 else
 345                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 346         }
 347         stale_refs = get_stale_heads(states->remote->fetch,
 348                                      states->remote->fetch_refspec_nr, fetch_map);
 349         for (ref = stale_refs; ref; ref = ref->next) {
 350                 struct string_list_item *item =
 351                         string_list_append(&states->stale, abbrev_branch(ref->name));
 352                 item->util = xstrdup(ref->name);
 353         }
 354         free_refs(stale_refs);
 355         free_refs(fetch_map);
 356
 357         string_list_sort(&states->new);
 358         string_list_sort(&states->tracked);
 359         string_list_sort(&states->stale);
 360
 361         return 0;
 362 }
 363
 364 struct push_info {
 365         char *dest;
 366         int forced;
 367         enum {
 368                 PUSH_STATUS_CREATE = 0,
 369                 PUSH_STATUS_DELETE,
 370                 PUSH_STATUS_UPTODATE,
 371                 PUSH_STATUS_FASTFORWARD,
 372                 PUSH_STATUS_OUTOFDATE,
 373                 PUSH_STATUS_NOTQUERIED
 374         } status;
 375 };
 376
 377 static int get_push_ref_states(const struct ref *remote_refs,
 378         struct ref_states *states)
 379 {
 380         struct remote *remote = states->remote;
 381         struct ref *ref, *local_refs, *push_map;
 382         if (remote->mirror)
 383                 return 0;
 384
 385         local_refs = get_local_heads();
 386         push_map = copy_ref_list(remote_refs);
 387
 388         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 389                         remote->push_refspec, MATCH_REFS_NONE);
 390
 391         states->push.strdup_strings = 1;
 392         for (ref = push_map; ref; ref = ref->next) {
 393                 struct string_list_item *item;
 394                 struct push_info *info;
 395
 396                 if (!ref->peer_ref)
 397                         continue;
 398                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 399
 400                 item = string_list_append(&states->push,
 401                                           abbrev_branch(ref->peer_ref->name));
 402                 item->util = xcalloc(1, sizeof(struct push_info));
 403                 info = item->util;
 404                 info->forced = ref->force;
 405                 info->dest = xstrdup(abbrev_branch(ref->name));
 406
 407                 if (is_null_sha1(ref->new_sha1)) {
 408                         info->status = PUSH_STATUS_DELETE;
 409                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 410                         info->status = PUSH_STATUS_UPTODATE;
 411                 else if (is_null_sha1(ref->old_sha1))
 412                         info->status = PUSH_STATUS_CREATE;
 413                 else if (has_sha1_file(ref->old_sha1) &&
 414                          ref_newer(ref->new_sha1, ref->old_sha1))
 415                         info->status = PUSH_STATUS_FASTFORWARD;
 416                 else
 417                         info->status = PUSH_STATUS_OUTOFDATE;
 418         }
 419         free_refs(local_refs);
 420         free_refs(push_map);
 421         return 0;
 422 }
 423
 424 static int get_push_ref_states_noquery(struct ref_states *states)
 425 {
 426         int i;
 427         struct remote *remote = states->remote;
 428         struct string_list_item *item;
 429         struct push_info *info;
 430
 431         if (remote->mirror)
 432                 return 0;
 433
 434         states->push.strdup_strings = 1;
 435         if (!remote->push_refspec_nr) {
 436                 item = string_list_append(&states->push, _("(matching)"));
 437                 info = item->util = xcalloc(1, sizeof(struct push_info));
 438                 info->status = PUSH_STATUS_NOTQUERIED;
 439                 info->dest = xstrdup(item->string);
 440         }
 441         for (i = 0; i < remote->push_refspec_nr; i++) {
 442                 struct refspec *spec = remote->push + i;
 443                 if (spec->matching)
 444                         item = string_list_append(&states->push, _("(matching)"));
 445                 else if (strlen(spec->src))
 446                         item = string_list_append(&states->push, spec->src);
 447                 else
 448                         item = string_list_append(&states->push, _("(delete)"));
 449
 450                 info = item->util = xcalloc(1, sizeof(struct push_info));
 451                 info->forced = spec->force;
 452                 info->status = PUSH_STATUS_NOTQUERIED;
 453                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 454         }
 455         return 0;
 456 }
 457
 458 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 459 {
 460         struct ref *ref, *matches;
 461         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 462         struct refspec refspec;
 463
 464         refspec.force = 0;
 465         refspec.pattern = 1;
 466         refspec.src = refspec.dst = "refs/heads/*";
 467         states->heads.strdup_strings = 1;
 468         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 469         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 470                                     fetch_map, 1);
 471         for (ref = matches; ref; ref = ref->next)
 472                 string_list_append(&states->heads, abbrev_branch(ref->name));
 473
 474         free_refs(fetch_map);
 475         free_refs(matches);
 476
 477         return 0;
 478 }
 479
 480 struct known_remote {
 481         struct known_remote *next;
 482         struct remote *remote;
 483 };
 484
 485 struct known_remotes {
 486         struct remote *to_delete;
 487         struct known_remote *list;
 488 };
 489
 490 static int add_known_remote(struct remote *remote, void *cb_data)
 491 {
 492         struct known_remotes *all = cb_data;
 493         struct known_remote *r;
 494
 495         if (!strcmp(all->to_delete->name, remote->name))
 496                 return 0;
 497
 498         r = xmalloc(sizeof(*r));
 499         r->remote = remote;
 500         r->next = all->list;
 501         all->list = r;
 502         return 0;
 503 }
 504
 505 struct branches_for_remote {
 506         struct remote *remote;
 507         struct string_list *branches, *skipped;
 508         struct known_remotes *keep;
 509 };
 510
 511 static int add_branch_for_removal(const char *refname,
 512         const struct object_id *oid, int flags, void *cb_data)
 513 {
 514         struct branches_for_remote *branches = cb_data;
 515         struct refspec refspec;
 516         struct known_remote *kr;
 517
 518         memset(&refspec, 0, sizeof(refspec));
 519         refspec.dst = (char *)refname;
 520         if (remote_find_tracking(branches->remote, &refspec))
 521                 return 0;
 522
 523         /* don't delete a branch if another remote also uses it */
 524         for (kr = branches->keep->list; kr; kr = kr->next) {
 525                 memset(&refspec, 0, sizeof(refspec));
 526                 refspec.dst = (char *)refname;
 527                 if (!remote_find_tracking(kr->remote, &refspec))
 528                         return 0;
 529         }
 530
 531         /* don't delete non-remote-tracking refs */
 532         if (!starts_with(refname, "refs/remotes/")) {
 533                 /* advise user how to delete local branches */
 534                 if (starts_with(refname, "refs/heads/"))
 535                         string_list_append(branches->skipped,
 536                                            abbrev_branch(refname));
 537                 /* silently skip over other non-remote refs */
 538                 return 0;
 539         }
 540
 541         /* make sure that symrefs are deleted */
 542         if (flags & REF_ISSYMREF)
 543                 return unlink(git_path("%s", refname));
 544
 545         string_list_append(branches->branches, refname);
 546
 547         return 0;
 548 }
 549
 550 struct rename_info {
 551         const char *old;
 552         const char *new;
 553         struct string_list *remote_branches;
 554 };
 555
 556 static int read_remote_branches(const char *refname,
 557         const struct object_id *oid, int flags, void *cb_data)
 558 {
 559         struct rename_info *rename = cb_data;
 560         struct strbuf buf = STRBUF_INIT;
 561         struct string_list_item *item;
 562         int flag;
 563         struct object_id orig_oid;
 564         const char *symref;
 565
 566         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 567         if (starts_with(refname, buf.buf)) {
 568                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 569                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 570                                             orig_oid.hash, &flag);
 571                 if (flag & REF_ISSYMREF)
 572                         item->util = xstrdup(symref);
 573                 else
 574                         item->util = NULL;
 575         }
 576
 577         return 0;
 578 }
 579
 580 static int migrate_file(struct remote *remote)
 581 {
 582         struct strbuf buf = STRBUF_INIT;
 583         int i;
 584         const char *path = NULL;
 585
 586         strbuf_addf(&buf, "remote.%s.url", remote->name);
 587         for (i = 0; i < remote->url_nr; i++)
 588                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 589                         return error(_("Could not append '%s' to '%s'"),
 590                                         remote->url[i], buf.buf);
 591         strbuf_reset(&buf);
 592         strbuf_addf(&buf, "remote.%s.push", remote->name);
 593         for (i = 0; i < remote->push_refspec_nr; i++)
 594                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 595                         return error(_("Could not append '%s' to '%s'"),
 596                                         remote->push_refspec[i], buf.buf);
 597         strbuf_reset(&buf);
 598         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 599         for (i = 0; i < remote->fetch_refspec_nr; i++)
 600                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 601                         return error(_("Could not append '%s' to '%s'"),
 602                                         remote->fetch_refspec[i], buf.buf);
 603         if (remote->origin == REMOTE_REMOTES)
 604                 path = git_path("remotes/%s", remote->name);
 605         else if (remote->origin == REMOTE_BRANCHES)
 606                 path = git_path("branches/%s", remote->name);
 607         if (path)
 608                 unlink_or_warn(path);
 609         return 0;
 610 }
 611
 612 static int mv(int argc, const char **argv)
 613 {
 614         struct option options[] = {
 615                 OPT_END()
 616         };
 617         struct remote *oldremote, *newremote;
 618         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 619                 old_remote_context = STRBUF_INIT;
 620         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 621         struct rename_info rename;
 622         int i, refspec_updated = 0;
 623
 624         if (argc != 3)
 625                 usage_with_options(builtin_remote_rename_usage, options);
 626
 627         rename.old = argv[1];
 628         rename.new = argv[2];
 629         rename.remote_branches = &remote_branches;
 630
 631         oldremote = remote_get(rename.old);
 632         if (!oldremote)
 633                 die(_("No such remote: %s"), rename.old);
 634
 635         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 636                 return migrate_file(oldremote);
 637
 638         newremote = remote_get(rename.new);
 639         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 640                 die(_("remote %s already exists."), rename.new);
 641
 642         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 643         if (!valid_fetch_refspec(buf.buf))
 644                 die(_("'%s' is not a valid remote name"), rename.new);
 645
 646         strbuf_reset(&buf);
 647         strbuf_addf(&buf, "remote.%s", rename.old);
 648         strbuf_addf(&buf2, "remote.%s", rename.new);
 649         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 650                 return error(_("Could not rename config section '%s' to '%s'"),
 651                                 buf.buf, buf2.buf);
 652
 653         strbuf_reset(&buf);
 654         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 655         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 656                 return error(_("Could not remove config section '%s'"), buf.buf);
 657         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 658         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 659                 char *ptr;
 660
 661                 strbuf_reset(&buf2);
 662                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 663                 ptr = strstr(buf2.buf, old_remote_context.buf);
 664                 if (ptr) {
 665                         refspec_updated = 1;
 666                         strbuf_splice(&buf2,
 667                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 668                                       strlen(rename.old), rename.new,
 669                                       strlen(rename.new));
 670                 } else
 671                         warning(_("Not updating non-default fetch refspec\n"
 672                                   "\t%s\n"
 673                                   "\tPlease update the configuration manually if necessary."),
 674                                 buf2.buf);
 675
 676                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 677                         return error(_("Could not append '%s'"), buf.buf);
 678         }
 679
 680         read_branches();
 681         for (i = 0; i < branch_list.nr; i++) {
 682                 struct string_list_item *item = branch_list.items + i;
 683                 struct branch_info *info = item->util;
 684                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 685                         strbuf_reset(&buf);
 686                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 687                         if (git_config_set(buf.buf, rename.new)) {
 688                                 return error(_("Could not set '%s'"), buf.buf);
 689                         }
 690                 }
 691         }
 692
 693         if (!refspec_updated)
 694                 return 0;
 695
 696         /*
 697          * First remove symrefs, then rename the rest, finally create
 698          * the new symrefs.
 699          */
 700         for_each_ref(read_remote_branches, &rename);
 701         for (i = 0; i < remote_branches.nr; i++) {
 702                 struct string_list_item *item = remote_branches.items + i;
 703                 int flag = 0;
 704                 struct object_id oid;
 705
 706                 read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 707                 if (!(flag & REF_ISSYMREF))
 708                         continue;
 709                 if (delete_ref(item->string, NULL, REF_NODEREF))
 710                         die(_("deleting '%s' failed"), item->string);
 711         }
 712         for (i = 0; i < remote_branches.nr; i++) {
 713                 struct string_list_item *item = remote_branches.items + i;
 714
 715                 if (item->util)
 716                         continue;
 717                 strbuf_reset(&buf);
 718                 strbuf_addstr(&buf, item->string);
 719                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 720                                 rename.new, strlen(rename.new));
 721                 strbuf_reset(&buf2);
 722                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 723                                 item->string, buf.buf);
 724                 if (rename_ref(item->string, buf.buf, buf2.buf))
 725                         die(_("renaming '%s' failed"), item->string);
 726         }
 727         for (i = 0; i < remote_branches.nr; i++) {
 728                 struct string_list_item *item = remote_branches.items + i;
 729
 730                 if (!item->util)
 731                         continue;
 732                 strbuf_reset(&buf);
 733                 strbuf_addstr(&buf, item->string);
 734                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 735                                 rename.new, strlen(rename.new));
 736                 strbuf_reset(&buf2);
 737                 strbuf_addstr(&buf2, item->util);
 738                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 739                                 rename.new, strlen(rename.new));
 740                 strbuf_reset(&buf3);
 741                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 742                                 item->string, buf.buf);
 743                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 744                         die(_("creating '%s' failed"), buf.buf);
 745         }
 746         return 0;
 747 }
 748
 749 static int rm(int argc, const char **argv)
 750 {
 751         struct option options[] = {
 752                 OPT_END()
 753         };
 754         struct remote *remote;
 755         struct strbuf buf = STRBUF_INIT;
 756         struct known_remotes known_remotes = { NULL, NULL };
 757         struct string_list branches = STRING_LIST_INIT_DUP;
 758         struct string_list skipped = STRING_LIST_INIT_DUP;
 759         struct branches_for_remote cb_data;
 760         int i, result;
 761
 762         memset(&cb_data, 0, sizeof(cb_data));
 763         cb_data.branches = &branches;
 764         cb_data.skipped = &skipped;
 765         cb_data.keep = &known_remotes;
 766
 767         if (argc != 2)
 768                 usage_with_options(builtin_remote_rm_usage, options);
 769
 770         remote = remote_get(argv[1]);
 771         if (!remote)
 772                 die(_("No such remote: %s"), argv[1]);
 773
 774         known_remotes.to_delete = remote;
 775         for_each_remote(add_known_remote, &known_remotes);
 776
 777         read_branches();
 778         for (i = 0; i < branch_list.nr; i++) {
 779                 struct string_list_item *item = branch_list.items + i;
 780                 struct branch_info *info = item->util;
 781                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 782                         const char *keys[] = { "remote", "merge", NULL }, **k;
 783                         for (k = keys; *k; k++) {
 784                                 strbuf_reset(&buf);
 785                                 strbuf_addf(&buf, "branch.%s.%s",
 786                                                 item->string, *k);
 787                                 if (git_config_set(buf.buf, NULL)) {
 788                                         strbuf_release(&buf);
 789                                         return -1;
 790                                 }
 791                         }
 792                 }
 793         }
 794
 795         /*
 796          * We cannot just pass a function to for_each_ref() which deletes
 797          * the branches one by one, since for_each_ref() relies on cached
 798          * refs, which are invalidated when deleting a branch.
 799          */
 800         cb_data.remote = remote;
 801         result = for_each_ref(add_branch_for_removal, &cb_data);
 802         strbuf_release(&buf);
 803
 804         if (!result)
 805                 result = delete_refs(&branches);
 806         string_list_clear(&branches, 0);
 807
 808         if (skipped.nr) {
 809                 fprintf_ln(stderr,
 810                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 811                               "to delete it, use:",
 812                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 813                               "to delete them, use:",
 814                               skipped.nr));
 815                 for (i = 0; i < skipped.nr; i++)
 816                         fprintf(stderr, "  git branch -d %s\n",
 817                                 skipped.items[i].string);
 818         }
 819         string_list_clear(&skipped, 0);
 820
 821         if (!result) {
 822                 strbuf_addf(&buf, "remote.%s", remote->name);
 823                 if (git_config_rename_section(buf.buf, NULL) < 1)
 824                         return error(_("Could not remove config section '%s'"), buf.buf);
 825         }
 826
 827         return result;
 828 }
 829
 830 static void clear_push_info(void *util, const char *string)
 831 {
 832         struct push_info *info = util;
 833         free(info->dest);
 834         free(info);
 835 }
 836
 837 static void free_remote_ref_states(struct ref_states *states)
 838 {
 839         string_list_clear(&states->new, 0);
 840         string_list_clear(&states->stale, 1);
 841         string_list_clear(&states->tracked, 0);
 842         string_list_clear(&states->heads, 0);
 843         string_list_clear_func(&states->push, clear_push_info);
 844 }
 845
 846 static int append_ref_to_tracked_list(const char *refname,
 847         const struct object_id *oid, int flags, void *cb_data)
 848 {
 849         struct ref_states *states = cb_data;
 850         struct refspec refspec;
 851
 852         if (flags & REF_ISSYMREF)
 853                 return 0;
 854
 855         memset(&refspec, 0, sizeof(refspec));
 856         refspec.dst = (char *)refname;
 857         if (!remote_find_tracking(states->remote, &refspec))
 858                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 859
 860         return 0;
 861 }
 862
 863 static int get_remote_ref_states(const char *name,
 864                                  struct ref_states *states,
 865                                  int query)
 866 {
 867         struct transport *transport;
 868         const struct ref *remote_refs;
 869
 870         states->remote = remote_get(name);
 871         if (!states->remote)
 872                 return error(_("No such remote: %s"), name);
 873
 874         read_branches();
 875
 876         if (query) {
 877                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 878                         states->remote->url[0] : NULL);
 879                 remote_refs = transport_get_remote_refs(transport);
 880                 transport_disconnect(transport);
 881
 882                 states->queried = 1;
 883                 if (query & GET_REF_STATES)
 884                         get_ref_states(remote_refs, states);
 885                 if (query & GET_HEAD_NAMES)
 886                         get_head_names(remote_refs, states);
 887                 if (query & GET_PUSH_REF_STATES)
 888                         get_push_ref_states(remote_refs, states);
 889         } else {
 890                 for_each_ref(append_ref_to_tracked_list, states);
 891                 string_list_sort(&states->tracked);
 892                 get_push_ref_states_noquery(states);
 893         }
 894
 895         return 0;
 896 }
 897
 898 struct show_info {
 899         struct string_list *list;
 900         struct ref_states *states;
 901         int width, width2;
 902         int any_rebase;
 903 };
 904
 905 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 906 {
 907         struct show_info *info = cb_data;
 908         int n = strlen(item->string);
 909         if (n > info->width)
 910                 info->width = n;
 911         string_list_insert(info->list, item->string);
 912         return 0;
 913 }
 914
 915 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 916 {
 917         struct show_info *info = cb_data;
 918         struct ref_states *states = info->states;
 919         const char *name = item->string;
 920
 921         if (states->queried) {
 922                 const char *fmt = "%s";
 923                 const char *arg = "";
 924                 if (string_list_has_string(&states->new, name)) {
 925                         fmt = _(" new (next fetch will store in remotes/%s)");
 926                         arg = states->remote->name;
 927                 } else if (string_list_has_string(&states->tracked, name))
 928                         arg = _(" tracked");
 929                 else if (string_list_has_string(&states->stale, name))
 930                         arg = _(" stale (use 'git remote prune' to remove)");
 931                 else
 932                         arg = _(" ???");
 933                 printf("    %-*s", info->width, name);
 934                 printf(fmt, arg);
 935                 printf("\n");
 936         } else
 937                 printf("    %s\n", name);
 938
 939         return 0;
 940 }
 941
 942 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 943 {
 944         struct show_info *show_info = cb_data;
 945         struct ref_states *states = show_info->states;
 946         struct branch_info *branch_info = branch_item->util;
 947         struct string_list_item *item;
 948         int n;
 949
 950         if (!branch_info->merge.nr || !branch_info->remote_name ||
 951             strcmp(states->remote->name, branch_info->remote_name))
 952                 return 0;
 953         if ((n = strlen(branch_item->string)) > show_info->width)
 954                 show_info->width = n;
 955         if (branch_info->rebase)
 956                 show_info->any_rebase = 1;
 957
 958         item = string_list_insert(show_info->list, branch_item->string);
 959         item->util = branch_info;
 960
 961         return 0;
 962 }
 963
 964 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 965 {
 966         struct show_info *show_info = cb_data;
 967         struct branch_info *branch_info = item->util;
 968         struct string_list *merge = &branch_info->merge;
 969         const char *also;
 970         int i;
 971
 972         if (branch_info->rebase && branch_info->merge.nr > 1) {
 973                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 974                         item->string);
 975                 return 0;
 976         }
 977
 978         printf("    %-*s ", show_info->width, item->string);
 979         if (branch_info->rebase) {
 980                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
 981                 return 0;
 982         } else if (show_info->any_rebase) {
 983                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 984                 also = _("    and with remote");
 985         } else {
 986                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 987                 also = _("   and with remote");
 988         }
 989         for (i = 1; i < merge->nr; i++)
 990                 printf("    %-*s %s %s\n", show_info->width, "", also,
 991                        merge->items[i].string);
 992
 993         return 0;
 994 }
 995
 996 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 997 {
 998         struct show_info *show_info = cb_data;
 999         struct push_info *push_info = push_item->util;
1000         struct string_list_item *item;
1001         int n;
1002         if ((n = strlen(push_item->string)) > show_info->width)
1003                 show_info->width = n;
1004         if ((n = strlen(push_info->dest)) > show_info->width2)
1005                 show_info->width2 = n;
1006         item = string_list_append(show_info->list, push_item->string);
1007         item->util = push_item->util;
1008         return 0;
1009 }
1010
1011 /*
1012  * Sorting comparison for a string list that has push_info
1013  * structs in its util field
1014  */
1015 static int cmp_string_with_push(const void *va, const void *vb)
1016 {
1017         const struct string_list_item *a = va;
1018         const struct string_list_item *b = vb;
1019         const struct push_info *a_push = a->util;
1020         const struct push_info *b_push = b->util;
1021         int cmp = strcmp(a->string, b->string);
1022         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1023 }
1024
1025 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1026 {
1027         struct show_info *show_info = cb_data;
1028         struct push_info *push_info = item->util;
1029         const char *src = item->string, *status = NULL;
1030
1031         switch (push_info->status) {
1032         case PUSH_STATUS_CREATE:
1033                 status = _("create");
1034                 break;
1035         case PUSH_STATUS_DELETE:
1036                 status = _("delete");
1037                 src = _("(none)");
1038                 break;
1039         case PUSH_STATUS_UPTODATE:
1040                 status = _("up to date");
1041                 break;
1042         case PUSH_STATUS_FASTFORWARD:
1043                 status = _("fast-forwardable");
1044                 break;
1045         case PUSH_STATUS_OUTOFDATE:
1046                 status = _("local out of date");
1047                 break;
1048         case PUSH_STATUS_NOTQUERIED:
1049                 break;
1050         }
1051         if (status) {
1052                 if (push_info->forced)
1053                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1054                                show_info->width2, push_info->dest, status);
1055                 else
1056                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1057                                show_info->width2, push_info->dest, status);
1058         } else {
1059                 if (push_info->forced)
1060                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1061                                push_info->dest);
1062                 else
1063                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1064                                push_info->dest);
1065         }
1066         return 0;
1067 }
1068
1069 static int get_one_entry(struct remote *remote, void *priv)
1070 {
1071         struct string_list *list = priv;
1072         struct strbuf url_buf = STRBUF_INIT;
1073         const char **url;
1074         int i, url_nr;
1075
1076         if (remote->url_nr > 0) {
1077                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1078                 string_list_append(list, remote->name)->util =
1079                                 strbuf_detach(&url_buf, NULL);
1080         } else
1081                 string_list_append(list, remote->name)->util = NULL;
1082         if (remote->pushurl_nr) {
1083                 url = remote->pushurl;
1084                 url_nr = remote->pushurl_nr;
1085         } else {
1086                 url = remote->url;
1087                 url_nr = remote->url_nr;
1088         }
1089         for (i = 0; i < url_nr; i++)
1090         {
1091                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1092                 string_list_append(list, remote->name)->util =
1093                                 strbuf_detach(&url_buf, NULL);
1094         }
1095
1096         return 0;
1097 }
1098
1099 static int show_all(void)
1100 {
1101         struct string_list list = STRING_LIST_INIT_NODUP;
1102         int result;
1103
1104         list.strdup_strings = 1;
1105         result = for_each_remote(get_one_entry, &list);
1106
1107         if (!result) {
1108                 int i;
1109
1110                 string_list_sort(&list);
1111                 for (i = 0; i < list.nr; i++) {
1112                         struct string_list_item *item = list.items + i;
1113                         if (verbose)
1114                                 printf("%s\t%s\n", item->string,
1115                                         item->util ? (const char *)item->util : "");
1116                         else {
1117                                 if (i && !strcmp((item - 1)->string, item->string))
1118                                         continue;
1119                                 printf("%s\n", item->string);
1120                         }
1121                 }
1122         }
1123         string_list_clear(&list, 1);
1124         return result;
1125 }
1126
1127 static int show(int argc, const char **argv)
1128 {
1129         int no_query = 0, result = 0, query_flag = 0;
1130         struct option options[] = {
1131                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1132                 OPT_END()
1133         };
1134         struct ref_states states;
1135         struct string_list info_list = STRING_LIST_INIT_NODUP;
1136         struct show_info info;
1137
1138         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1139                              0);
1140
1141         if (argc < 1)
1142                 return show_all();
1143
1144         if (!no_query)
1145                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1146
1147         memset(&states, 0, sizeof(states));
1148         memset(&info, 0, sizeof(info));
1149         info.states = &states;
1150         info.list = &info_list;
1151         for (; argc; argc--, argv++) {
1152                 int i;
1153                 const char **url;
1154                 int url_nr;
1155
1156                 get_remote_ref_states(*argv, &states, query_flag);
1157
1158                 printf_ln(_("* remote %s"), *argv);
1159                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1160                        states.remote->url[0] : _("(no URL)"));
1161                 if (states.remote->pushurl_nr) {
1162                         url = states.remote->pushurl;
1163                         url_nr = states.remote->pushurl_nr;
1164                 } else {
1165                         url = states.remote->url;
1166                         url_nr = states.remote->url_nr;
1167                 }
1168                 for (i = 0; i < url_nr; i++)
1169                         printf_ln(_("  Push  URL: %s"), url[i]);
1170                 if (!i)
1171                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1172                 if (no_query)
1173                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1174                 else if (!states.heads.nr)
1175                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1176                 else if (states.heads.nr == 1)
1177                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1178                 else {
1179                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1180                                  " may be one of the following):\n"));
1181                         for (i = 0; i < states.heads.nr; i++)
1182                                 printf("    %s\n", states.heads.items[i].string);
1183                 }
1184
1185                 /* remote branch info */
1186                 info.width = 0;
1187                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1188                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1189                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1190                 if (info.list->nr)
1191                         printf_ln(Q_("  Remote branch:%s",
1192                                      "  Remote branches:%s",
1193                                      info.list->nr),
1194                                   no_query ? _(" (status not queried)") : "");
1195                 for_each_string_list(info.list, show_remote_info_item, &info);
1196                 string_list_clear(info.list, 0);
1197
1198                 /* git pull info */
1199                 info.width = 0;
1200                 info.any_rebase = 0;
1201                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1202                 if (info.list->nr)
1203                         printf_ln(Q_("  Local branch configured for 'git pull':",
1204                                      "  Local branches configured for 'git pull':",
1205                                      info.list->nr));
1206                 for_each_string_list(info.list, show_local_info_item, &info);
1207                 string_list_clear(info.list, 0);
1208
1209                 /* git push info */
1210                 if (states.remote->mirror)
1211                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1212
1213                 info.width = info.width2 = 0;
1214                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1215                 qsort(info.list->items, info.list->nr,
1216                         sizeof(*info.list->items), cmp_string_with_push);
1217                 if (info.list->nr)
1218                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1219                                      "  Local refs configured for 'git push'%s:",
1220                                      info.list->nr),
1221                                   no_query ? _(" (status not queried)") : "");
1222                 for_each_string_list(info.list, show_push_info_item, &info);
1223                 string_list_clear(info.list, 0);
1224
1225                 free_remote_ref_states(&states);
1226         }
1227
1228         return result;
1229 }
1230
1231 static int set_head(int argc, const char **argv)
1232 {
1233         int i, opt_a = 0, opt_d = 0, result = 0;
1234         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1235         char *head_name = NULL;
1236
1237         struct option options[] = {
1238                 OPT_BOOL('a', "auto", &opt_a,
1239                          N_("set refs/remotes/<name>/HEAD according to remote")),
1240                 OPT_BOOL('d', "delete", &opt_d,
1241                          N_("delete refs/remotes/<name>/HEAD")),
1242                 OPT_END()
1243         };
1244         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1245                              0);
1246         if (argc)
1247                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1248
1249         if (!opt_a && !opt_d && argc == 2) {
1250                 head_name = xstrdup(argv[1]);
1251         } else if (opt_a && !opt_d && argc == 1) {
1252                 struct ref_states states;
1253                 memset(&states, 0, sizeof(states));
1254                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1255                 if (!states.heads.nr)
1256                         result |= error(_("Cannot determine remote HEAD"));
1257                 else if (states.heads.nr > 1) {
1258                         result |= error(_("Multiple remote HEAD branches. "
1259                                           "Please choose one explicitly with:"));
1260                         for (i = 0; i < states.heads.nr; i++)
1261                                 fprintf(stderr, "  git remote set-head %s %s\n",
1262                                         argv[0], states.heads.items[i].string);
1263                 } else
1264                         head_name = xstrdup(states.heads.items[0].string);
1265                 free_remote_ref_states(&states);
1266         } else if (opt_d && !opt_a && argc == 1) {
1267                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1268                         result |= error(_("Could not delete %s"), buf.buf);
1269         } else
1270                 usage_with_options(builtin_remote_sethead_usage, options);
1271
1272         if (head_name) {
1273                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1274                 /* make sure it's valid */
1275                 if (!ref_exists(buf2.buf))
1276                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1277                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1278                         result |= error(_("Could not setup %s"), buf.buf);
1279                 if (opt_a)
1280                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1281                 free(head_name);
1282         }
1283
1284         strbuf_release(&buf);
1285         strbuf_release(&buf2);
1286         return result;
1287 }
1288
1289 static int prune_remote(const char *remote, int dry_run)
1290 {
1291         int result = 0;
1292         struct ref_states states;
1293         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1294         struct string_list_item *item;
1295         const char *dangling_msg = dry_run
1296                 ? _(" %s will become dangling!")
1297                 : _(" %s has become dangling!");
1298
1299         memset(&states, 0, sizeof(states));
1300         get_remote_ref_states(remote, &states, GET_REF_STATES);
1301
1302         if (!states.stale.nr) {
1303                 free_remote_ref_states(&states);
1304                 return 0;
1305         }
1306
1307         printf_ln(_("Pruning %s"), remote);
1308         printf_ln(_("URL: %s"),
1309                   states.remote->url_nr
1310                   ? states.remote->url[0]
1311                   : _("(no URL)"));
1312
1313         for_each_string_list_item(item, &states.stale)
1314                 string_list_append(&refs_to_prune, item->util);
1315         string_list_sort(&refs_to_prune);
1316
1317         if (!dry_run)
1318                 result |= delete_refs(&refs_to_prune);
1319
1320         for_each_string_list_item(item, &states.stale) {
1321                 const char *refname = item->util;
1322
1323                 if (dry_run)
1324                         printf_ln(_(" * [would prune] %s"),
1325                                abbrev_ref(refname, "refs/remotes/"));
1326                 else
1327                         printf_ln(_(" * [pruned] %s"),
1328                                abbrev_ref(refname, "refs/remotes/"));
1329         }
1330
1331         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1332
1333         string_list_clear(&refs_to_prune, 0);
1334         free_remote_ref_states(&states);
1335         return result;
1336 }
1337
1338 static int prune(int argc, const char **argv)
1339 {
1340         int dry_run = 0, result = 0;
1341         struct option options[] = {
1342                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1343                 OPT_END()
1344         };
1345
1346         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1347                              0);
1348
1349         if (argc < 1)
1350                 usage_with_options(builtin_remote_prune_usage, options);
1351
1352         for (; argc; argc--, argv++)
1353                 result |= prune_remote(*argv, dry_run);
1354
1355         return result;
1356 }
1357
1358 static int get_remote_default(const char *key, const char *value, void *priv)
1359 {
1360         if (strcmp(key, "remotes.default") == 0) {
1361                 int *found = priv;
1362                 *found = 1;
1363         }
1364         return 0;
1365 }
1366
1367 static int update(int argc, const char **argv)
1368 {
1369         int i, prune = -1;
1370         struct option options[] = {
1371                 OPT_BOOL('p', "prune", &prune,
1372                          N_("prune remotes after fetching")),
1373                 OPT_END()
1374         };
1375         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1376         int default_defined = 0;
1377         int retval;
1378
1379         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1380                              PARSE_OPT_KEEP_ARGV0);
1381
1382         argv_array_push(&fetch_argv, "fetch");
1383
1384         if (prune != -1)
1385                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1386         if (verbose)
1387                 argv_array_push(&fetch_argv, "-v");
1388         argv_array_push(&fetch_argv, "--multiple");
1389         if (argc < 2)
1390                 argv_array_push(&fetch_argv, "default");
1391         for (i = 1; i < argc; i++)
1392                 argv_array_push(&fetch_argv, argv[i]);
1393
1394         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1395                 git_config(get_remote_default, &default_defined);
1396                 if (!default_defined) {
1397                         argv_array_pop(&fetch_argv);
1398                         argv_array_push(&fetch_argv, "--all");
1399                 }
1400         }
1401
1402         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1403         argv_array_clear(&fetch_argv);
1404         return retval;
1405 }
1406
1407 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1408 {
1409         return git_config_set_multivar(key, NULL, NULL, 1);
1410 }
1411
1412 static int add_branches(struct remote *remote, const char **branches,
1413                         const char *key)
1414 {
1415         const char *remotename = remote->name;
1416         int mirror = remote->mirror;
1417         struct strbuf refspec = STRBUF_INIT;
1418
1419         for (; *branches; branches++)
1420                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1421                         strbuf_release(&refspec);
1422                         return 1;
1423                 }
1424
1425         strbuf_release(&refspec);
1426         return 0;
1427 }
1428
1429 static int set_remote_branches(const char *remotename, const char **branches,
1430                                 int add_mode)
1431 {
1432         struct strbuf key = STRBUF_INIT;
1433         struct remote *remote;
1434
1435         strbuf_addf(&key, "remote.%s.fetch", remotename);
1436
1437         if (!remote_is_configured(remotename))
1438                 die(_("No such remote '%s'"), remotename);
1439         remote = remote_get(remotename);
1440
1441         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1442                 strbuf_release(&key);
1443                 return 1;
1444         }
1445         if (add_branches(remote, branches, key.buf)) {
1446                 strbuf_release(&key);
1447                 return 1;
1448         }
1449
1450         strbuf_release(&key);
1451         return 0;
1452 }
1453
1454 static int set_branches(int argc, const char **argv)
1455 {
1456         int add_mode = 0;
1457         struct option options[] = {
1458                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1459                 OPT_END()
1460         };
1461
1462         argc = parse_options(argc, argv, NULL, options,
1463                              builtin_remote_setbranches_usage, 0);
1464         if (argc == 0) {
1465                 error(_("no remote specified"));
1466                 usage_with_options(builtin_remote_setbranches_usage, options);
1467         }
1468         argv[argc] = NULL;
1469
1470         return set_remote_branches(argv[0], argv + 1, add_mode);
1471 }
1472
1473 static int set_url(int argc, const char **argv)
1474 {
1475         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1476         int matches = 0, negative_matches = 0;
1477         const char *remotename = NULL;
1478         const char *newurl = NULL;
1479         const char *oldurl = NULL;
1480         struct remote *remote;
1481         regex_t old_regex;
1482         const char **urlset;
1483         int urlset_nr;
1484         struct strbuf name_buf = STRBUF_INIT;
1485         struct option options[] = {
1486                 OPT_BOOL('\0', "push", &push_mode,
1487                          N_("manipulate push URLs")),
1488                 OPT_BOOL('\0', "add", &add_mode,
1489                          N_("add URL")),
1490                 OPT_BOOL('\0', "delete", &delete_mode,
1491                             N_("delete URLs")),
1492                 OPT_END()
1493         };
1494         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1495                              PARSE_OPT_KEEP_ARGV0);
1496
1497         if (add_mode && delete_mode)
1498                 die(_("--add --delete doesn't make sense"));
1499
1500         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1501                 usage_with_options(builtin_remote_seturl_usage, options);
1502
1503         remotename = argv[1];
1504         newurl = argv[2];
1505         if (argc > 3)
1506                 oldurl = argv[3];
1507
1508         if (delete_mode)
1509                 oldurl = newurl;
1510
1511         if (!remote_is_configured(remotename))
1512                 die(_("No such remote '%s'"), remotename);
1513         remote = remote_get(remotename);
1514
1515         if (push_mode) {
1516                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1517                 urlset = remote->pushurl;
1518                 urlset_nr = remote->pushurl_nr;
1519         } else {
1520                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1521                 urlset = remote->url;
1522                 urlset_nr = remote->url_nr;
1523         }
1524
1525         /* Special cases that add new entry. */
1526         if ((!oldurl && !delete_mode) || add_mode) {
1527                 if (add_mode)
1528                         git_config_set_multivar(name_buf.buf, newurl,
1529                                 "^$", 0);
1530                 else
1531                         git_config_set(name_buf.buf, newurl);
1532                 strbuf_release(&name_buf);
1533                 return 0;
1534         }
1535
1536         /* Old URL specified. Demand that one matches. */
1537         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1538                 die(_("Invalid old URL pattern: %s"), oldurl);
1539
1540         for (i = 0; i < urlset_nr; i++)
1541                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1542                         matches++;
1543                 else
1544                         negative_matches++;
1545         if (!delete_mode && !matches)
1546                 die(_("No such URL found: %s"), oldurl);
1547         if (delete_mode && !negative_matches && !push_mode)
1548                 die(_("Will not delete all non-push URLs"));
1549
1550         regfree(&old_regex);
1551
1552         if (!delete_mode)
1553                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1554         else
1555                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1556         return 0;
1557 }
1558
1559 int cmd_remote(int argc, const char **argv, const char *prefix)
1560 {
1561         struct option options[] = {
1562                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1563                 OPT_END()
1564         };
1565         int result;
1566
1567         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1568                 PARSE_OPT_STOP_AT_NON_OPTION);
1569
1570         if (argc < 1)
1571                 result = show_all();
1572         else if (!strcmp(argv[0], "add"))
1573                 result = add(argc, argv);
1574         else if (!strcmp(argv[0], "rename"))
1575                 result = mv(argc, argv);
1576         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1577                 result = rm(argc, argv);
1578         else if (!strcmp(argv[0], "set-head"))
1579                 result = set_head(argc, argv);
1580         else if (!strcmp(argv[0], "set-branches"))
1581                 result = set_branches(argc, argv);
1582         else if (!strcmp(argv[0], "set-url"))
1583                 result = set_url(argc, argv);
1584         else if (!strcmp(argv[0], "show"))
1585                 result = show(argc, argv);
1586         else if (!strcmp(argv[0], "prune"))
1587                 result = prune(argc, argv);
1588         else if (!strcmp(argv[0], "update"))
1589                 result = update(argc, argv);
1590         else {
1591                 error(_("Unknown subcommand: %s"), argv[0]);
1592                 usage_with_options(builtin_remote_usage, options);
1593         }
1594
1595         return result ? 1 : 0;
1596 }