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 unsigned char *sha1, int flags, void *cb_data)
 513 {
 514         struct branches_for_remote *branches = cb_data;
 515         struct refspec refspec;
 516         struct string_list_item *item;
 517         struct known_remote *kr;
 518
 519         memset(&refspec, 0, sizeof(refspec));
 520         refspec.dst = (char *)refname;
 521         if (remote_find_tracking(branches->remote, &refspec))
 522                 return 0;
 523
 524         /* don't delete a branch if another remote also uses it */
 525         for (kr = branches->keep->list; kr; kr = kr->next) {
 526                 memset(&refspec, 0, sizeof(refspec));
 527                 refspec.dst = (char *)refname;
 528                 if (!remote_find_tracking(kr->remote, &refspec))
 529                         return 0;
 530         }
 531
 532         /* don't delete non-remote-tracking refs */
 533         if (!starts_with(refname, "refs/remotes/")) {
 534                 /* advise user how to delete local branches */
 535                 if (starts_with(refname, "refs/heads/"))
 536                         string_list_append(branches->skipped,
 537                                            abbrev_branch(refname));
 538                 /* silently skip over other non-remote refs */
 539                 return 0;
 540         }
 541
 542         /* make sure that symrefs are deleted */
 543         if (flags & REF_ISSYMREF)
 544                 return unlink(git_path("%s", refname));
 545
 546         item = string_list_append(branches->branches, refname);
 547         item->util = xmalloc(20);
 548         hashcpy(item->util, sha1);
 549
 550         return 0;
 551 }
 552
 553 struct rename_info {
 554         const char *old;
 555         const char *new;
 556         struct string_list *remote_branches;
 557 };
 558
 559 static int read_remote_branches(const char *refname,
 560         const unsigned char *sha1, int flags, void *cb_data)
 561 {
 562         struct rename_info *rename = cb_data;
 563         struct strbuf buf = STRBUF_INIT;
 564         struct string_list_item *item;
 565         int flag;
 566         unsigned char orig_sha1[20];
 567         const char *symref;
 568
 569         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 570         if (starts_with(refname, buf.buf)) {
 571                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 572                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 573                                             orig_sha1, &flag);
 574                 if (flag & REF_ISSYMREF)
 575                         item->util = xstrdup(symref);
 576                 else
 577                         item->util = NULL;
 578         }
 579
 580         return 0;
 581 }
 582
 583 static int migrate_file(struct remote *remote)
 584 {
 585         struct strbuf buf = STRBUF_INIT;
 586         int i;
 587         const char *path = NULL;
 588
 589         strbuf_addf(&buf, "remote.%s.url", remote->name);
 590         for (i = 0; i < remote->url_nr; i++)
 591                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 592                         return error(_("Could not append '%s' to '%s'"),
 593                                         remote->url[i], buf.buf);
 594         strbuf_reset(&buf);
 595         strbuf_addf(&buf, "remote.%s.push", remote->name);
 596         for (i = 0; i < remote->push_refspec_nr; i++)
 597                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 598                         return error(_("Could not append '%s' to '%s'"),
 599                                         remote->push_refspec[i], buf.buf);
 600         strbuf_reset(&buf);
 601         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 602         for (i = 0; i < remote->fetch_refspec_nr; i++)
 603                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 604                         return error(_("Could not append '%s' to '%s'"),
 605                                         remote->fetch_refspec[i], buf.buf);
 606         if (remote->origin == REMOTE_REMOTES)
 607                 path = git_path("remotes/%s", remote->name);
 608         else if (remote->origin == REMOTE_BRANCHES)
 609                 path = git_path("branches/%s", remote->name);
 610         if (path)
 611                 unlink_or_warn(path);
 612         return 0;
 613 }
 614
 615 static int mv(int argc, const char **argv)
 616 {
 617         struct option options[] = {
 618                 OPT_END()
 619         };
 620         struct remote *oldremote, *newremote;
 621         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 622                 old_remote_context = STRBUF_INIT;
 623         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 624         struct rename_info rename;
 625         int i, refspec_updated = 0;
 626         struct each_ref_fn_sha1_adapter wrapped_read_remote_branches =
 627                 {read_remote_branches, &rename};
 628
 629         if (argc != 3)
 630                 usage_with_options(builtin_remote_rename_usage, options);
 631
 632         rename.old = argv[1];
 633         rename.new = argv[2];
 634         rename.remote_branches = &remote_branches;
 635
 636         oldremote = remote_get(rename.old);
 637         if (!oldremote)
 638                 die(_("No such remote: %s"), rename.old);
 639
 640         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 641                 return migrate_file(oldremote);
 642
 643         newremote = remote_get(rename.new);
 644         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 645                 die(_("remote %s already exists."), rename.new);
 646
 647         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 648         if (!valid_fetch_refspec(buf.buf))
 649                 die(_("'%s' is not a valid remote name"), rename.new);
 650
 651         strbuf_reset(&buf);
 652         strbuf_addf(&buf, "remote.%s", rename.old);
 653         strbuf_addf(&buf2, "remote.%s", rename.new);
 654         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 655                 return error(_("Could not rename config section '%s' to '%s'"),
 656                                 buf.buf, buf2.buf);
 657
 658         strbuf_reset(&buf);
 659         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 660         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 661                 return error(_("Could not remove config section '%s'"), buf.buf);
 662         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 663         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 664                 char *ptr;
 665
 666                 strbuf_reset(&buf2);
 667                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 668                 ptr = strstr(buf2.buf, old_remote_context.buf);
 669                 if (ptr) {
 670                         refspec_updated = 1;
 671                         strbuf_splice(&buf2,
 672                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 673                                       strlen(rename.old), rename.new,
 674                                       strlen(rename.new));
 675                 } else
 676                         warning(_("Not updating non-default fetch refspec\n"
 677                                   "\t%s\n"
 678                                   "\tPlease update the configuration manually if necessary."),
 679                                 buf2.buf);
 680
 681                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 682                         return error(_("Could not append '%s'"), buf.buf);
 683         }
 684
 685         read_branches();
 686         for (i = 0; i < branch_list.nr; i++) {
 687                 struct string_list_item *item = branch_list.items + i;
 688                 struct branch_info *info = item->util;
 689                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 690                         strbuf_reset(&buf);
 691                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 692                         if (git_config_set(buf.buf, rename.new)) {
 693                                 return error(_("Could not set '%s'"), buf.buf);
 694                         }
 695                 }
 696         }
 697
 698         if (!refspec_updated)
 699                 return 0;
 700
 701         /*
 702          * First remove symrefs, then rename the rest, finally create
 703          * the new symrefs.
 704          */
 705         for_each_ref(each_ref_fn_adapter, &wrapped_read_remote_branches);
 706         for (i = 0; i < remote_branches.nr; i++) {
 707                 struct string_list_item *item = remote_branches.items + i;
 708                 int flag = 0;
 709                 unsigned char sha1[20];
 710
 711                 read_ref_full(item->string, RESOLVE_REF_READING, sha1, &flag);
 712                 if (!(flag & REF_ISSYMREF))
 713                         continue;
 714                 if (delete_ref(item->string, NULL, REF_NODEREF))
 715                         die(_("deleting '%s' failed"), item->string);
 716         }
 717         for (i = 0; i < remote_branches.nr; i++) {
 718                 struct string_list_item *item = remote_branches.items + i;
 719
 720                 if (item->util)
 721                         continue;
 722                 strbuf_reset(&buf);
 723                 strbuf_addstr(&buf, item->string);
 724                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 725                                 rename.new, strlen(rename.new));
 726                 strbuf_reset(&buf2);
 727                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 728                                 item->string, buf.buf);
 729                 if (rename_ref(item->string, buf.buf, buf2.buf))
 730                         die(_("renaming '%s' failed"), item->string);
 731         }
 732         for (i = 0; i < remote_branches.nr; i++) {
 733                 struct string_list_item *item = remote_branches.items + i;
 734
 735                 if (!item->util)
 736                         continue;
 737                 strbuf_reset(&buf);
 738                 strbuf_addstr(&buf, item->string);
 739                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 740                                 rename.new, strlen(rename.new));
 741                 strbuf_reset(&buf2);
 742                 strbuf_addstr(&buf2, item->util);
 743                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 744                                 rename.new, strlen(rename.new));
 745                 strbuf_reset(&buf3);
 746                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 747                                 item->string, buf.buf);
 748                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 749                         die(_("creating '%s' failed"), buf.buf);
 750         }
 751         return 0;
 752 }
 753
 754 static int remove_branches(struct string_list *branches)
 755 {
 756         struct strbuf err = STRBUF_INIT;
 757         int i, result = 0;
 758
 759         if (repack_without_refs(branches, &err))
 760                 result |= error("%s", err.buf);
 761         strbuf_release(&err);
 762
 763         for (i = 0; i < branches->nr; i++) {
 764                 struct string_list_item *item = branches->items + i;
 765                 const char *refname = item->string;
 766
 767                 if (delete_ref(refname, NULL, 0))
 768                         result |= error(_("Could not remove branch %s"), refname);
 769         }
 770
 771         return result;
 772 }
 773
 774 static int rm(int argc, const char **argv)
 775 {
 776         struct option options[] = {
 777                 OPT_END()
 778         };
 779         struct remote *remote;
 780         struct strbuf buf = STRBUF_INIT;
 781         struct known_remotes known_remotes = { NULL, NULL };
 782         struct string_list branches = STRING_LIST_INIT_DUP;
 783         struct string_list skipped = STRING_LIST_INIT_DUP;
 784         struct branches_for_remote cb_data;
 785         int i, result;
 786         struct each_ref_fn_sha1_adapter wrapped_add_branch_for_removal =
 787                 {add_branch_for_removal, &cb_data};
 788
 789         memset(&cb_data, 0, sizeof(cb_data));
 790         cb_data.branches = &branches;
 791         cb_data.skipped = &skipped;
 792         cb_data.keep = &known_remotes;
 793
 794         if (argc != 2)
 795                 usage_with_options(builtin_remote_rm_usage, options);
 796
 797         remote = remote_get(argv[1]);
 798         if (!remote)
 799                 die(_("No such remote: %s"), argv[1]);
 800
 801         known_remotes.to_delete = remote;
 802         for_each_remote(add_known_remote, &known_remotes);
 803
 804         read_branches();
 805         for (i = 0; i < branch_list.nr; i++) {
 806                 struct string_list_item *item = branch_list.items + i;
 807                 struct branch_info *info = item->util;
 808                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 809                         const char *keys[] = { "remote", "merge", NULL }, **k;
 810                         for (k = keys; *k; k++) {
 811                                 strbuf_reset(&buf);
 812                                 strbuf_addf(&buf, "branch.%s.%s",
 813                                                 item->string, *k);
 814                                 if (git_config_set(buf.buf, NULL)) {
 815                                         strbuf_release(&buf);
 816                                         return -1;
 817                                 }
 818                         }
 819                 }
 820         }
 821
 822         /*
 823          * We cannot just pass a function to for_each_ref() which deletes
 824          * the branches one by one, since for_each_ref() relies on cached
 825          * refs, which are invalidated when deleting a branch.
 826          */
 827         cb_data.remote = remote;
 828         result = for_each_ref(each_ref_fn_adapter, &wrapped_add_branch_for_removal);
 829         strbuf_release(&buf);
 830
 831         if (!result)
 832                 result = remove_branches(&branches);
 833         string_list_clear(&branches, 1);
 834
 835         if (skipped.nr) {
 836                 fprintf_ln(stderr,
 837                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 838                               "to delete it, use:",
 839                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 840                               "to delete them, use:",
 841                               skipped.nr));
 842                 for (i = 0; i < skipped.nr; i++)
 843                         fprintf(stderr, "  git branch -d %s\n",
 844                                 skipped.items[i].string);
 845         }
 846         string_list_clear(&skipped, 0);
 847
 848         if (!result) {
 849                 strbuf_addf(&buf, "remote.%s", remote->name);
 850                 if (git_config_rename_section(buf.buf, NULL) < 1)
 851                         return error(_("Could not remove config section '%s'"), buf.buf);
 852         }
 853
 854         return result;
 855 }
 856
 857 static void clear_push_info(void *util, const char *string)
 858 {
 859         struct push_info *info = util;
 860         free(info->dest);
 861         free(info);
 862 }
 863
 864 static void free_remote_ref_states(struct ref_states *states)
 865 {
 866         string_list_clear(&states->new, 0);
 867         string_list_clear(&states->stale, 1);
 868         string_list_clear(&states->tracked, 0);
 869         string_list_clear(&states->heads, 0);
 870         string_list_clear_func(&states->push, clear_push_info);
 871 }
 872
 873 static int append_ref_to_tracked_list(const char *refname,
 874         const unsigned char *sha1, int flags, void *cb_data)
 875 {
 876         struct ref_states *states = cb_data;
 877         struct refspec refspec;
 878
 879         if (flags & REF_ISSYMREF)
 880                 return 0;
 881
 882         memset(&refspec, 0, sizeof(refspec));
 883         refspec.dst = (char *)refname;
 884         if (!remote_find_tracking(states->remote, &refspec))
 885                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 886
 887         return 0;
 888 }
 889
 890 static int get_remote_ref_states(const char *name,
 891                                  struct ref_states *states,
 892                                  int query)
 893 {
 894         struct transport *transport;
 895         const struct ref *remote_refs;
 896
 897         states->remote = remote_get(name);
 898         if (!states->remote)
 899                 return error(_("No such remote: %s"), name);
 900
 901         read_branches();
 902
 903         if (query) {
 904                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 905                         states->remote->url[0] : NULL);
 906                 remote_refs = transport_get_remote_refs(transport);
 907                 transport_disconnect(transport);
 908
 909                 states->queried = 1;
 910                 if (query & GET_REF_STATES)
 911                         get_ref_states(remote_refs, states);
 912                 if (query & GET_HEAD_NAMES)
 913                         get_head_names(remote_refs, states);
 914                 if (query & GET_PUSH_REF_STATES)
 915                         get_push_ref_states(remote_refs, states);
 916         } else {
 917                 struct each_ref_fn_sha1_adapter wrapped_append_ref_to_tracked_list =
 918                         {append_ref_to_tracked_list, states};
 919
 920                 for_each_ref(each_ref_fn_adapter, &wrapped_append_ref_to_tracked_list);
 921                 string_list_sort(&states->tracked);
 922                 get_push_ref_states_noquery(states);
 923         }
 924
 925         return 0;
 926 }
 927
 928 struct show_info {
 929         struct string_list *list;
 930         struct ref_states *states;
 931         int width, width2;
 932         int any_rebase;
 933 };
 934
 935 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 936 {
 937         struct show_info *info = cb_data;
 938         int n = strlen(item->string);
 939         if (n > info->width)
 940                 info->width = n;
 941         string_list_insert(info->list, item->string);
 942         return 0;
 943 }
 944
 945 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 946 {
 947         struct show_info *info = cb_data;
 948         struct ref_states *states = info->states;
 949         const char *name = item->string;
 950
 951         if (states->queried) {
 952                 const char *fmt = "%s";
 953                 const char *arg = "";
 954                 if (string_list_has_string(&states->new, name)) {
 955                         fmt = _(" new (next fetch will store in remotes/%s)");
 956                         arg = states->remote->name;
 957                 } else if (string_list_has_string(&states->tracked, name))
 958                         arg = _(" tracked");
 959                 else if (string_list_has_string(&states->stale, name))
 960                         arg = _(" stale (use 'git remote prune' to remove)");
 961                 else
 962                         arg = _(" ???");
 963                 printf("    %-*s", info->width, name);
 964                 printf(fmt, arg);
 965                 printf("\n");
 966         } else
 967                 printf("    %s\n", name);
 968
 969         return 0;
 970 }
 971
 972 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 973 {
 974         struct show_info *show_info = cb_data;
 975         struct ref_states *states = show_info->states;
 976         struct branch_info *branch_info = branch_item->util;
 977         struct string_list_item *item;
 978         int n;
 979
 980         if (!branch_info->merge.nr || !branch_info->remote_name ||
 981             strcmp(states->remote->name, branch_info->remote_name))
 982                 return 0;
 983         if ((n = strlen(branch_item->string)) > show_info->width)
 984                 show_info->width = n;
 985         if (branch_info->rebase)
 986                 show_info->any_rebase = 1;
 987
 988         item = string_list_insert(show_info->list, branch_item->string);
 989         item->util = branch_info;
 990
 991         return 0;
 992 }
 993
 994 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 995 {
 996         struct show_info *show_info = cb_data;
 997         struct branch_info *branch_info = item->util;
 998         struct string_list *merge = &branch_info->merge;
 999         const char *also;
1000         int i;
1001
1002         if (branch_info->rebase && branch_info->merge.nr > 1) {
1003                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
1004                         item->string);
1005                 return 0;
1006         }
1007
1008         printf("    %-*s ", show_info->width, item->string);
1009         if (branch_info->rebase) {
1010                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1011                 return 0;
1012         } else if (show_info->any_rebase) {
1013                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1014                 also = _("    and with remote");
1015         } else {
1016                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1017                 also = _("   and with remote");
1018         }
1019         for (i = 1; i < merge->nr; i++)
1020                 printf("    %-*s %s %s\n", show_info->width, "", also,
1021                        merge->items[i].string);
1022
1023         return 0;
1024 }
1025
1026 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1027 {
1028         struct show_info *show_info = cb_data;
1029         struct push_info *push_info = push_item->util;
1030         struct string_list_item *item;
1031         int n;
1032         if ((n = strlen(push_item->string)) > show_info->width)
1033                 show_info->width = n;
1034         if ((n = strlen(push_info->dest)) > show_info->width2)
1035                 show_info->width2 = n;
1036         item = string_list_append(show_info->list, push_item->string);
1037         item->util = push_item->util;
1038         return 0;
1039 }
1040
1041 /*
1042  * Sorting comparison for a string list that has push_info
1043  * structs in its util field
1044  */
1045 static int cmp_string_with_push(const void *va, const void *vb)
1046 {
1047         const struct string_list_item *a = va;
1048         const struct string_list_item *b = vb;
1049         const struct push_info *a_push = a->util;
1050         const struct push_info *b_push = b->util;
1051         int cmp = strcmp(a->string, b->string);
1052         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1053 }
1054
1055 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1056 {
1057         struct show_info *show_info = cb_data;
1058         struct push_info *push_info = item->util;
1059         const char *src = item->string, *status = NULL;
1060
1061         switch (push_info->status) {
1062         case PUSH_STATUS_CREATE:
1063                 status = _("create");
1064                 break;
1065         case PUSH_STATUS_DELETE:
1066                 status = _("delete");
1067                 src = _("(none)");
1068                 break;
1069         case PUSH_STATUS_UPTODATE:
1070                 status = _("up to date");
1071                 break;
1072         case PUSH_STATUS_FASTFORWARD:
1073                 status = _("fast-forwardable");
1074                 break;
1075         case PUSH_STATUS_OUTOFDATE:
1076                 status = _("local out of date");
1077                 break;
1078         case PUSH_STATUS_NOTQUERIED:
1079                 break;
1080         }
1081         if (status) {
1082                 if (push_info->forced)
1083                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1084                                show_info->width2, push_info->dest, status);
1085                 else
1086                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1087                                show_info->width2, push_info->dest, status);
1088         } else {
1089                 if (push_info->forced)
1090                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1091                                push_info->dest);
1092                 else
1093                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1094                                push_info->dest);
1095         }
1096         return 0;
1097 }
1098
1099 static int get_one_entry(struct remote *remote, void *priv)
1100 {
1101         struct string_list *list = priv;
1102         struct strbuf url_buf = STRBUF_INIT;
1103         const char **url;
1104         int i, url_nr;
1105
1106         if (remote->url_nr > 0) {
1107                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1108                 string_list_append(list, remote->name)->util =
1109                                 strbuf_detach(&url_buf, NULL);
1110         } else
1111                 string_list_append(list, remote->name)->util = NULL;
1112         if (remote->pushurl_nr) {
1113                 url = remote->pushurl;
1114                 url_nr = remote->pushurl_nr;
1115         } else {
1116                 url = remote->url;
1117                 url_nr = remote->url_nr;
1118         }
1119         for (i = 0; i < url_nr; i++)
1120         {
1121                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1122                 string_list_append(list, remote->name)->util =
1123                                 strbuf_detach(&url_buf, NULL);
1124         }
1125
1126         return 0;
1127 }
1128
1129 static int show_all(void)
1130 {
1131         struct string_list list = STRING_LIST_INIT_NODUP;
1132         int result;
1133
1134         list.strdup_strings = 1;
1135         result = for_each_remote(get_one_entry, &list);
1136
1137         if (!result) {
1138                 int i;
1139
1140                 string_list_sort(&list);
1141                 for (i = 0; i < list.nr; i++) {
1142                         struct string_list_item *item = list.items + i;
1143                         if (verbose)
1144                                 printf("%s\t%s\n", item->string,
1145                                         item->util ? (const char *)item->util : "");
1146                         else {
1147                                 if (i && !strcmp((item - 1)->string, item->string))
1148                                         continue;
1149                                 printf("%s\n", item->string);
1150                         }
1151                 }
1152         }
1153         string_list_clear(&list, 1);
1154         return result;
1155 }
1156
1157 static int show(int argc, const char **argv)
1158 {
1159         int no_query = 0, result = 0, query_flag = 0;
1160         struct option options[] = {
1161                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1162                 OPT_END()
1163         };
1164         struct ref_states states;
1165         struct string_list info_list = STRING_LIST_INIT_NODUP;
1166         struct show_info info;
1167
1168         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1169                              0);
1170
1171         if (argc < 1)
1172                 return show_all();
1173
1174         if (!no_query)
1175                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1176
1177         memset(&states, 0, sizeof(states));
1178         memset(&info, 0, sizeof(info));
1179         info.states = &states;
1180         info.list = &info_list;
1181         for (; argc; argc--, argv++) {
1182                 int i;
1183                 const char **url;
1184                 int url_nr;
1185
1186                 get_remote_ref_states(*argv, &states, query_flag);
1187
1188                 printf_ln(_("* remote %s"), *argv);
1189                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1190                        states.remote->url[0] : _("(no URL)"));
1191                 if (states.remote->pushurl_nr) {
1192                         url = states.remote->pushurl;
1193                         url_nr = states.remote->pushurl_nr;
1194                 } else {
1195                         url = states.remote->url;
1196                         url_nr = states.remote->url_nr;
1197                 }
1198                 for (i = 0; i < url_nr; i++)
1199                         printf_ln(_("  Push  URL: %s"), url[i]);
1200                 if (!i)
1201                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1202                 if (no_query)
1203                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1204                 else if (!states.heads.nr)
1205                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1206                 else if (states.heads.nr == 1)
1207                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1208                 else {
1209                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1210                                  " may be one of the following):\n"));
1211                         for (i = 0; i < states.heads.nr; i++)
1212                                 printf("    %s\n", states.heads.items[i].string);
1213                 }
1214
1215                 /* remote branch info */
1216                 info.width = 0;
1217                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1218                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1219                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1220                 if (info.list->nr)
1221                         printf_ln(Q_("  Remote branch:%s",
1222                                      "  Remote branches:%s",
1223                                      info.list->nr),
1224                                   no_query ? _(" (status not queried)") : "");
1225                 for_each_string_list(info.list, show_remote_info_item, &info);
1226                 string_list_clear(info.list, 0);
1227
1228                 /* git pull info */
1229                 info.width = 0;
1230                 info.any_rebase = 0;
1231                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1232                 if (info.list->nr)
1233                         printf_ln(Q_("  Local branch configured for 'git pull':",
1234                                      "  Local branches configured for 'git pull':",
1235                                      info.list->nr));
1236                 for_each_string_list(info.list, show_local_info_item, &info);
1237                 string_list_clear(info.list, 0);
1238
1239                 /* git push info */
1240                 if (states.remote->mirror)
1241                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1242
1243                 info.width = info.width2 = 0;
1244                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1245                 qsort(info.list->items, info.list->nr,
1246                         sizeof(*info.list->items), cmp_string_with_push);
1247                 if (info.list->nr)
1248                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1249                                      "  Local refs configured for 'git push'%s:",
1250                                      info.list->nr),
1251                                   no_query ? _(" (status not queried)") : "");
1252                 for_each_string_list(info.list, show_push_info_item, &info);
1253                 string_list_clear(info.list, 0);
1254
1255                 free_remote_ref_states(&states);
1256         }
1257
1258         return result;
1259 }
1260
1261 static int set_head(int argc, const char **argv)
1262 {
1263         int i, opt_a = 0, opt_d = 0, result = 0;
1264         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1265         char *head_name = NULL;
1266
1267         struct option options[] = {
1268                 OPT_BOOL('a', "auto", &opt_a,
1269                          N_("set refs/remotes/<name>/HEAD according to remote")),
1270                 OPT_BOOL('d', "delete", &opt_d,
1271                          N_("delete refs/remotes/<name>/HEAD")),
1272                 OPT_END()
1273         };
1274         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1275                              0);
1276         if (argc)
1277                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1278
1279         if (!opt_a && !opt_d && argc == 2) {
1280                 head_name = xstrdup(argv[1]);
1281         } else if (opt_a && !opt_d && argc == 1) {
1282                 struct ref_states states;
1283                 memset(&states, 0, sizeof(states));
1284                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1285                 if (!states.heads.nr)
1286                         result |= error(_("Cannot determine remote HEAD"));
1287                 else if (states.heads.nr > 1) {
1288                         result |= error(_("Multiple remote HEAD branches. "
1289                                           "Please choose one explicitly with:"));
1290                         for (i = 0; i < states.heads.nr; i++)
1291                                 fprintf(stderr, "  git remote set-head %s %s\n",
1292                                         argv[0], states.heads.items[i].string);
1293                 } else
1294                         head_name = xstrdup(states.heads.items[0].string);
1295                 free_remote_ref_states(&states);
1296         } else if (opt_d && !opt_a && argc == 1) {
1297                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1298                         result |= error(_("Could not delete %s"), buf.buf);
1299         } else
1300                 usage_with_options(builtin_remote_sethead_usage, options);
1301
1302         if (head_name) {
1303                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1304                 /* make sure it's valid */
1305                 if (!ref_exists(buf2.buf))
1306                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1307                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1308                         result |= error(_("Could not setup %s"), buf.buf);
1309                 if (opt_a)
1310                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1311                 free(head_name);
1312         }
1313
1314         strbuf_release(&buf);
1315         strbuf_release(&buf2);
1316         return result;
1317 }
1318
1319 static int prune_remote(const char *remote, int dry_run)
1320 {
1321         int result = 0;
1322         struct ref_states states;
1323         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1324         struct string_list_item *item;
1325         const char *dangling_msg = dry_run
1326                 ? _(" %s will become dangling!")
1327                 : _(" %s has become dangling!");
1328
1329         memset(&states, 0, sizeof(states));
1330         get_remote_ref_states(remote, &states, GET_REF_STATES);
1331
1332         if (!states.stale.nr) {
1333                 free_remote_ref_states(&states);
1334                 return 0;
1335         }
1336
1337         printf_ln(_("Pruning %s"), remote);
1338         printf_ln(_("URL: %s"),
1339                   states.remote->url_nr
1340                   ? states.remote->url[0]
1341                   : _("(no URL)"));
1342
1343         for_each_string_list_item(item, &states.stale)
1344                 string_list_append(&refs_to_prune, item->util);
1345         string_list_sort(&refs_to_prune);
1346
1347         if (!dry_run) {
1348                 struct strbuf err = STRBUF_INIT;
1349                 if (repack_without_refs(&refs_to_prune, &err))
1350                         result |= error("%s", err.buf);
1351                 strbuf_release(&err);
1352         }
1353
1354         for_each_string_list_item(item, &states.stale) {
1355                 const char *refname = item->util;
1356
1357                 if (!dry_run)
1358                         result |= delete_ref(refname, NULL, 0);
1359
1360                 if (dry_run)
1361                         printf_ln(_(" * [would prune] %s"),
1362                                abbrev_ref(refname, "refs/remotes/"));
1363                 else
1364                         printf_ln(_(" * [pruned] %s"),
1365                                abbrev_ref(refname, "refs/remotes/"));
1366         }
1367
1368         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1369
1370         string_list_clear(&refs_to_prune, 0);
1371         free_remote_ref_states(&states);
1372         return result;
1373 }
1374
1375 static int prune(int argc, const char **argv)
1376 {
1377         int dry_run = 0, result = 0;
1378         struct option options[] = {
1379                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1380                 OPT_END()
1381         };
1382
1383         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1384                              0);
1385
1386         if (argc < 1)
1387                 usage_with_options(builtin_remote_prune_usage, options);
1388
1389         for (; argc; argc--, argv++)
1390                 result |= prune_remote(*argv, dry_run);
1391
1392         return result;
1393 }
1394
1395 static int get_remote_default(const char *key, const char *value, void *priv)
1396 {
1397         if (strcmp(key, "remotes.default") == 0) {
1398                 int *found = priv;
1399                 *found = 1;
1400         }
1401         return 0;
1402 }
1403
1404 static int update(int argc, const char **argv)
1405 {
1406         int i, prune = -1;
1407         struct option options[] = {
1408                 OPT_BOOL('p', "prune", &prune,
1409                          N_("prune remotes after fetching")),
1410                 OPT_END()
1411         };
1412         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1413         int default_defined = 0;
1414         int retval;
1415
1416         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1417                              PARSE_OPT_KEEP_ARGV0);
1418
1419         argv_array_push(&fetch_argv, "fetch");
1420
1421         if (prune != -1)
1422                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1423         if (verbose)
1424                 argv_array_push(&fetch_argv, "-v");
1425         argv_array_push(&fetch_argv, "--multiple");
1426         if (argc < 2)
1427                 argv_array_push(&fetch_argv, "default");
1428         for (i = 1; i < argc; i++)
1429                 argv_array_push(&fetch_argv, argv[i]);
1430
1431         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1432                 git_config(get_remote_default, &default_defined);
1433                 if (!default_defined) {
1434                         argv_array_pop(&fetch_argv);
1435                         argv_array_push(&fetch_argv, "--all");
1436                 }
1437         }
1438
1439         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1440         argv_array_clear(&fetch_argv);
1441         return retval;
1442 }
1443
1444 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1445 {
1446         return git_config_set_multivar(key, NULL, NULL, 1);
1447 }
1448
1449 static int add_branches(struct remote *remote, const char **branches,
1450                         const char *key)
1451 {
1452         const char *remotename = remote->name;
1453         int mirror = remote->mirror;
1454         struct strbuf refspec = STRBUF_INIT;
1455
1456         for (; *branches; branches++)
1457                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1458                         strbuf_release(&refspec);
1459                         return 1;
1460                 }
1461
1462         strbuf_release(&refspec);
1463         return 0;
1464 }
1465
1466 static int set_remote_branches(const char *remotename, const char **branches,
1467                                 int add_mode)
1468 {
1469         struct strbuf key = STRBUF_INIT;
1470         struct remote *remote;
1471
1472         strbuf_addf(&key, "remote.%s.fetch", remotename);
1473
1474         if (!remote_is_configured(remotename))
1475                 die(_("No such remote '%s'"), remotename);
1476         remote = remote_get(remotename);
1477
1478         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1479                 strbuf_release(&key);
1480                 return 1;
1481         }
1482         if (add_branches(remote, branches, key.buf)) {
1483                 strbuf_release(&key);
1484                 return 1;
1485         }
1486
1487         strbuf_release(&key);
1488         return 0;
1489 }
1490
1491 static int set_branches(int argc, const char **argv)
1492 {
1493         int add_mode = 0;
1494         struct option options[] = {
1495                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1496                 OPT_END()
1497         };
1498
1499         argc = parse_options(argc, argv, NULL, options,
1500                              builtin_remote_setbranches_usage, 0);
1501         if (argc == 0) {
1502                 error(_("no remote specified"));
1503                 usage_with_options(builtin_remote_setbranches_usage, options);
1504         }
1505         argv[argc] = NULL;
1506
1507         return set_remote_branches(argv[0], argv + 1, add_mode);
1508 }
1509
1510 static int set_url(int argc, const char **argv)
1511 {
1512         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1513         int matches = 0, negative_matches = 0;
1514         const char *remotename = NULL;
1515         const char *newurl = NULL;
1516         const char *oldurl = NULL;
1517         struct remote *remote;
1518         regex_t old_regex;
1519         const char **urlset;
1520         int urlset_nr;
1521         struct strbuf name_buf = STRBUF_INIT;
1522         struct option options[] = {
1523                 OPT_BOOL('\0', "push", &push_mode,
1524                          N_("manipulate push URLs")),
1525                 OPT_BOOL('\0', "add", &add_mode,
1526                          N_("add URL")),
1527                 OPT_BOOL('\0', "delete", &delete_mode,
1528                             N_("delete URLs")),
1529                 OPT_END()
1530         };
1531         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1532                              PARSE_OPT_KEEP_ARGV0);
1533
1534         if (add_mode && delete_mode)
1535                 die(_("--add --delete doesn't make sense"));
1536
1537         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1538                 usage_with_options(builtin_remote_seturl_usage, options);
1539
1540         remotename = argv[1];
1541         newurl = argv[2];
1542         if (argc > 3)
1543                 oldurl = argv[3];
1544
1545         if (delete_mode)
1546                 oldurl = newurl;
1547
1548         if (!remote_is_configured(remotename))
1549                 die(_("No such remote '%s'"), remotename);
1550         remote = remote_get(remotename);
1551
1552         if (push_mode) {
1553                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1554                 urlset = remote->pushurl;
1555                 urlset_nr = remote->pushurl_nr;
1556         } else {
1557                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1558                 urlset = remote->url;
1559                 urlset_nr = remote->url_nr;
1560         }
1561
1562         /* Special cases that add new entry. */
1563         if ((!oldurl && !delete_mode) || add_mode) {
1564                 if (add_mode)
1565                         git_config_set_multivar(name_buf.buf, newurl,
1566                                 "^$", 0);
1567                 else
1568                         git_config_set(name_buf.buf, newurl);
1569                 strbuf_release(&name_buf);
1570                 return 0;
1571         }
1572
1573         /* Old URL specified. Demand that one matches. */
1574         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1575                 die(_("Invalid old URL pattern: %s"), oldurl);
1576
1577         for (i = 0; i < urlset_nr; i++)
1578                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1579                         matches++;
1580                 else
1581                         negative_matches++;
1582         if (!delete_mode && !matches)
1583                 die(_("No such URL found: %s"), oldurl);
1584         if (delete_mode && !negative_matches && !push_mode)
1585                 die(_("Will not delete all non-push URLs"));
1586
1587         regfree(&old_regex);
1588
1589         if (!delete_mode)
1590                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1591         else
1592                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1593         return 0;
1594 }
1595
1596 int cmd_remote(int argc, const char **argv, const char *prefix)
1597 {
1598         struct option options[] = {
1599                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1600                 OPT_END()
1601         };
1602         int result;
1603
1604         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1605                 PARSE_OPT_STOP_AT_NON_OPTION);
1606
1607         if (argc < 1)
1608                 result = show_all();
1609         else if (!strcmp(argv[0], "add"))
1610                 result = add(argc, argv);
1611         else if (!strcmp(argv[0], "rename"))
1612                 result = mv(argc, argv);
1613         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1614                 result = rm(argc, argv);
1615         else if (!strcmp(argv[0], "set-head"))
1616                 result = set_head(argc, argv);
1617         else if (!strcmp(argv[0], "set-branches"))
1618                 result = set_branches(argc, argv);
1619         else if (!strcmp(argv[0], "set-url"))
1620                 result = set_url(argc, argv);
1621         else if (!strcmp(argv[0], "show"))
1622                 result = show(argc, argv);
1623         else if (!strcmp(argv[0], "prune"))
1624                 result = prune(argc, argv);
1625         else if (!strcmp(argv[0], "update"))
1626                 result = update(argc, argv);
1627         else {
1628                 error(_("Unknown subcommand: %s"), argv[0]);
1629                 usage_with_options(builtin_remote_usage, options);
1630         }
1631
1632         return result ? 1 : 0;
1633 }