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 get-url [--push] [--all] <name>"),
  22         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  23         N_("git remote set-url --add <name> <newurl>"),
  24         N_("git remote set-url --delete <name> <url>"),
  25         NULL
  26 };
  27
  28 static const char * const builtin_remote_add_usage[] = {
  29         N_("git remote add [<options>] <name> <url>"),
  30         NULL
  31 };
  32
  33 static const char * const builtin_remote_rename_usage[] = {
  34         N_("git remote rename <old> <new>"),
  35         NULL
  36 };
  37
  38 static const char * const builtin_remote_rm_usage[] = {
  39         N_("git remote remove <name>"),
  40         NULL
  41 };
  42
  43 static const char * const builtin_remote_sethead_usage[] = {
  44         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  45         NULL
  46 };
  47
  48 static const char * const builtin_remote_setbranches_usage[] = {
  49         N_("git remote set-branches <name> <branch>..."),
  50         N_("git remote set-branches --add <name> <branch>..."),
  51         NULL
  52 };
  53
  54 static const char * const builtin_remote_show_usage[] = {
  55         N_("git remote show [<options>] <name>"),
  56         NULL
  57 };
  58
  59 static const char * const builtin_remote_prune_usage[] = {
  60         N_("git remote prune [<options>] <name>"),
  61         NULL
  62 };
  63
  64 static const char * const builtin_remote_update_usage[] = {
  65         N_("git remote update [<options>] [<group> | <remote>]..."),
  66         NULL
  67 };
  68
  69 static const char * const builtin_remote_geturl_usage[] = {
  70         N_("git remote get-url [--push] [--all] <name>"),
  71         NULL
  72 };
  73
  74 static const char * const builtin_remote_seturl_usage[] = {
  75         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  76         N_("git remote set-url --add <name> <newurl>"),
  77         N_("git remote set-url --delete <name> <url>"),
  78         NULL
  79 };
  80
  81 #define GET_REF_STATES (1<<0)
  82 #define GET_HEAD_NAMES (1<<1)
  83 #define GET_PUSH_REF_STATES (1<<2)
  84
  85 static int verbose;
  86
  87 static int fetch_remote(const char *name)
  88 {
  89         const char *argv[] = { "fetch", name, NULL, NULL };
  90         if (verbose) {
  91                 argv[1] = "-v";
  92                 argv[2] = name;
  93         }
  94         printf_ln(_("Updating %s"), name);
  95         if (run_command_v_opt(argv, RUN_GIT_CMD))
  96                 return error(_("Could not fetch %s"), name);
  97         return 0;
  98 }
  99
 100 enum {
 101         TAGS_UNSET = 0,
 102         TAGS_DEFAULT = 1,
 103         TAGS_SET = 2
 104 };
 105
 106 #define MIRROR_NONE 0
 107 #define MIRROR_FETCH 1
 108 #define MIRROR_PUSH 2
 109 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 110
 111 static int add_branch(const char *key, const char *branchname,
 112                 const char *remotename, int mirror, struct strbuf *tmp)
 113 {
 114         strbuf_reset(tmp);
 115         strbuf_addch(tmp, '+');
 116         if (mirror)
 117                 strbuf_addf(tmp, "refs/%s:refs/%s",
 118                                 branchname, branchname);
 119         else
 120                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 121                                 branchname, remotename, branchname);
 122         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 123 }
 124
 125 static const char mirror_advice[] =
 126 N_("--mirror is dangerous and deprecated; please\n"
 127    "\t use --mirror=fetch or --mirror=push instead");
 128
 129 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 130 {
 131         unsigned *mirror = opt->value;
 132         if (not)
 133                 *mirror = MIRROR_NONE;
 134         else if (!arg) {
 135                 warning("%s", _(mirror_advice));
 136                 *mirror = MIRROR_BOTH;
 137         }
 138         else if (!strcmp(arg, "fetch"))
 139                 *mirror = MIRROR_FETCH;
 140         else if (!strcmp(arg, "push"))
 141                 *mirror = MIRROR_PUSH;
 142         else
 143                 return error(_("unknown mirror argument: %s"), arg);
 144         return 0;
 145 }
 146
 147 static int add(int argc, const char **argv)
 148 {
 149         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 150         unsigned mirror = MIRROR_NONE;
 151         struct string_list track = STRING_LIST_INIT_NODUP;
 152         const char *master = NULL;
 153         struct remote *remote;
 154         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 155         const char *name, *url;
 156         int i;
 157
 158         struct option options[] = {
 159                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 160                 OPT_SET_INT(0, "tags", &fetch_tags,
 161                             N_("import all tags and associated objects when fetching"),
 162                             TAGS_SET),
 163                 OPT_SET_INT(0, NULL, &fetch_tags,
 164                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 165                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 166                                 N_("branch(es) to track")),
 167                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 168                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 169                         N_("set up remote as a mirror to push to or fetch from"),
 170                         PARSE_OPT_OPTARG, parse_mirror_opt },
 171                 OPT_END()
 172         };
 173
 174         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 175                              0);
 176
 177         if (argc != 2)
 178                 usage_with_options(builtin_remote_add_usage, options);
 179
 180         if (mirror && master)
 181                 die(_("specifying a master branch makes no sense with --mirror"));
 182         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 183                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 184
 185         name = argv[0];
 186         url = argv[1];
 187
 188         remote = remote_get(name);
 189         if (remote && (remote->url_nr > 1 ||
 190                         (strcmp(name, remote->url[0]) &&
 191                                 strcmp(url, remote->url[0])) ||
 192                         remote->fetch_refspec_nr))
 193                 die(_("remote %s already exists."), name);
 194
 195         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 196         if (!valid_fetch_refspec(buf2.buf))
 197                 die(_("'%s' is not a valid remote name"), name);
 198
 199         strbuf_addf(&buf, "remote.%s.url", name);
 200         if (git_config_set(buf.buf, url))
 201                 return 1;
 202
 203         if (!mirror || mirror & MIRROR_FETCH) {
 204                 strbuf_reset(&buf);
 205                 strbuf_addf(&buf, "remote.%s.fetch", name);
 206                 if (track.nr == 0)
 207                         string_list_append(&track, "*");
 208                 for (i = 0; i < track.nr; i++) {
 209                         if (add_branch(buf.buf, track.items[i].string,
 210                                        name, mirror, &buf2))
 211                                 return 1;
 212                 }
 213         }
 214
 215         if (mirror & MIRROR_PUSH) {
 216                 strbuf_reset(&buf);
 217                 strbuf_addf(&buf, "remote.%s.mirror", name);
 218                 if (git_config_set(buf.buf, "true"))
 219                         return 1;
 220         }
 221
 222         if (fetch_tags != TAGS_DEFAULT) {
 223                 strbuf_reset(&buf);
 224                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 225                 if (git_config_set(buf.buf,
 226                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 227                         return 1;
 228         }
 229
 230         if (fetch && fetch_remote(name))
 231                 return 1;
 232
 233         if (master) {
 234                 strbuf_reset(&buf);
 235                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 236
 237                 strbuf_reset(&buf2);
 238                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 239
 240                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 241                         return error(_("Could not setup master '%s'"), master);
 242         }
 243
 244         strbuf_release(&buf);
 245         strbuf_release(&buf2);
 246         string_list_clear(&track, 0);
 247
 248         return 0;
 249 }
 250
 251 struct branch_info {
 252         char *remote_name;
 253         struct string_list merge;
 254         int rebase;
 255 };
 256
 257 static struct string_list branch_list;
 258
 259 static const char *abbrev_ref(const char *name, const char *prefix)
 260 {
 261         skip_prefix(name, prefix, &name);
 262         return name;
 263 }
 264 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 265
 266 static int config_read_branches(const char *key, const char *value, void *cb)
 267 {
 268         if (starts_with(key, "branch.")) {
 269                 const char *orig_key = key;
 270                 char *name;
 271                 struct string_list_item *item;
 272                 struct branch_info *info;
 273                 enum { REMOTE, MERGE, REBASE } type;
 274                 size_t key_len;
 275
 276                 key += 7;
 277                 if (strip_suffix(key, ".remote", &key_len)) {
 278                         name = xmemdupz(key, key_len);
 279                         type = REMOTE;
 280                 } else if (strip_suffix(key, ".merge", &key_len)) {
 281                         name = xmemdupz(key, key_len);
 282                         type = MERGE;
 283                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 284                         name = xmemdupz(key, key_len);
 285                         type = REBASE;
 286                 } else
 287                         return 0;
 288
 289                 item = string_list_insert(&branch_list, name);
 290
 291                 if (!item->util)
 292                         item->util = xcalloc(1, sizeof(struct branch_info));
 293                 info = item->util;
 294                 if (type == REMOTE) {
 295                         if (info->remote_name)
 296                                 warning(_("more than one %s"), orig_key);
 297                         info->remote_name = xstrdup(value);
 298                 } else if (type == MERGE) {
 299                         char *space = strchr(value, ' ');
 300                         value = abbrev_branch(value);
 301                         while (space) {
 302                                 char *merge;
 303                                 merge = xstrndup(value, space - value);
 304                                 string_list_append(&info->merge, merge);
 305                                 value = abbrev_branch(space + 1);
 306                                 space = strchr(value, ' ');
 307                         }
 308                         string_list_append(&info->merge, xstrdup(value));
 309                 } else {
 310                         int v = git_config_maybe_bool(orig_key, value);
 311                         if (v >= 0)
 312                                 info->rebase = v;
 313                         else if (!strcmp(value, "preserve"))
 314                                 info->rebase = 1;
 315                 }
 316         }
 317         return 0;
 318 }
 319
 320 static void read_branches(void)
 321 {
 322         if (branch_list.nr)
 323                 return;
 324         git_config(config_read_branches, NULL);
 325 }
 326
 327 struct ref_states {
 328         struct remote *remote;
 329         struct string_list new, stale, tracked, heads, push;
 330         int queried;
 331 };
 332
 333 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 334 {
 335         struct ref *fetch_map = NULL, **tail = &fetch_map;
 336         struct ref *ref, *stale_refs;
 337         int i;
 338
 339         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 340                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 341                         die(_("Could not get fetch map for refspec %s"),
 342                                 states->remote->fetch_refspec[i]);
 343
 344         states->new.strdup_strings = 1;
 345         states->tracked.strdup_strings = 1;
 346         states->stale.strdup_strings = 1;
 347         for (ref = fetch_map; ref; ref = ref->next) {
 348                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 349                         string_list_append(&states->new, abbrev_branch(ref->name));
 350                 else
 351                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 352         }
 353         stale_refs = get_stale_heads(states->remote->fetch,
 354                                      states->remote->fetch_refspec_nr, fetch_map);
 355         for (ref = stale_refs; ref; ref = ref->next) {
 356                 struct string_list_item *item =
 357                         string_list_append(&states->stale, abbrev_branch(ref->name));
 358                 item->util = xstrdup(ref->name);
 359         }
 360         free_refs(stale_refs);
 361         free_refs(fetch_map);
 362
 363         string_list_sort(&states->new);
 364         string_list_sort(&states->tracked);
 365         string_list_sort(&states->stale);
 366
 367         return 0;
 368 }
 369
 370 struct push_info {
 371         char *dest;
 372         int forced;
 373         enum {
 374                 PUSH_STATUS_CREATE = 0,
 375                 PUSH_STATUS_DELETE,
 376                 PUSH_STATUS_UPTODATE,
 377                 PUSH_STATUS_FASTFORWARD,
 378                 PUSH_STATUS_OUTOFDATE,
 379                 PUSH_STATUS_NOTQUERIED
 380         } status;
 381 };
 382
 383 static int get_push_ref_states(const struct ref *remote_refs,
 384         struct ref_states *states)
 385 {
 386         struct remote *remote = states->remote;
 387         struct ref *ref, *local_refs, *push_map;
 388         if (remote->mirror)
 389                 return 0;
 390
 391         local_refs = get_local_heads();
 392         push_map = copy_ref_list(remote_refs);
 393
 394         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 395                         remote->push_refspec, MATCH_REFS_NONE);
 396
 397         states->push.strdup_strings = 1;
 398         for (ref = push_map; ref; ref = ref->next) {
 399                 struct string_list_item *item;
 400                 struct push_info *info;
 401
 402                 if (!ref->peer_ref)
 403                         continue;
 404                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 405
 406                 item = string_list_append(&states->push,
 407                                           abbrev_branch(ref->peer_ref->name));
 408                 item->util = xcalloc(1, sizeof(struct push_info));
 409                 info = item->util;
 410                 info->forced = ref->force;
 411                 info->dest = xstrdup(abbrev_branch(ref->name));
 412
 413                 if (is_null_oid(&ref->new_oid)) {
 414                         info->status = PUSH_STATUS_DELETE;
 415                 } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
 416                         info->status = PUSH_STATUS_UPTODATE;
 417                 else if (is_null_oid(&ref->old_oid))
 418                         info->status = PUSH_STATUS_CREATE;
 419                 else if (has_object_file(&ref->old_oid) &&
 420                          ref_newer(&ref->new_oid, &ref->old_oid))
 421                         info->status = PUSH_STATUS_FASTFORWARD;
 422                 else
 423                         info->status = PUSH_STATUS_OUTOFDATE;
 424         }
 425         free_refs(local_refs);
 426         free_refs(push_map);
 427         return 0;
 428 }
 429
 430 static int get_push_ref_states_noquery(struct ref_states *states)
 431 {
 432         int i;
 433         struct remote *remote = states->remote;
 434         struct string_list_item *item;
 435         struct push_info *info;
 436
 437         if (remote->mirror)
 438                 return 0;
 439
 440         states->push.strdup_strings = 1;
 441         if (!remote->push_refspec_nr) {
 442                 item = string_list_append(&states->push, _("(matching)"));
 443                 info = item->util = xcalloc(1, sizeof(struct push_info));
 444                 info->status = PUSH_STATUS_NOTQUERIED;
 445                 info->dest = xstrdup(item->string);
 446         }
 447         for (i = 0; i < remote->push_refspec_nr; i++) {
 448                 struct refspec *spec = remote->push + i;
 449                 if (spec->matching)
 450                         item = string_list_append(&states->push, _("(matching)"));
 451                 else if (strlen(spec->src))
 452                         item = string_list_append(&states->push, spec->src);
 453                 else
 454                         item = string_list_append(&states->push, _("(delete)"));
 455
 456                 info = item->util = xcalloc(1, sizeof(struct push_info));
 457                 info->forced = spec->force;
 458                 info->status = PUSH_STATUS_NOTQUERIED;
 459                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 460         }
 461         return 0;
 462 }
 463
 464 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 465 {
 466         struct ref *ref, *matches;
 467         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 468         struct refspec refspec;
 469
 470         refspec.force = 0;
 471         refspec.pattern = 1;
 472         refspec.src = refspec.dst = "refs/heads/*";
 473         states->heads.strdup_strings = 1;
 474         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 475         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 476                                     fetch_map, 1);
 477         for (ref = matches; ref; ref = ref->next)
 478                 string_list_append(&states->heads, abbrev_branch(ref->name));
 479
 480         free_refs(fetch_map);
 481         free_refs(matches);
 482
 483         return 0;
 484 }
 485
 486 struct known_remote {
 487         struct known_remote *next;
 488         struct remote *remote;
 489 };
 490
 491 struct known_remotes {
 492         struct remote *to_delete;
 493         struct known_remote *list;
 494 };
 495
 496 static int add_known_remote(struct remote *remote, void *cb_data)
 497 {
 498         struct known_remotes *all = cb_data;
 499         struct known_remote *r;
 500
 501         if (!strcmp(all->to_delete->name, remote->name))
 502                 return 0;
 503
 504         r = xmalloc(sizeof(*r));
 505         r->remote = remote;
 506         r->next = all->list;
 507         all->list = r;
 508         return 0;
 509 }
 510
 511 struct branches_for_remote {
 512         struct remote *remote;
 513         struct string_list *branches, *skipped;
 514         struct known_remotes *keep;
 515 };
 516
 517 static int add_branch_for_removal(const char *refname,
 518         const struct object_id *oid, int flags, void *cb_data)
 519 {
 520         struct branches_for_remote *branches = cb_data;
 521         struct refspec refspec;
 522         struct known_remote *kr;
 523
 524         memset(&refspec, 0, sizeof(refspec));
 525         refspec.dst = (char *)refname;
 526         if (remote_find_tracking(branches->remote, &refspec))
 527                 return 0;
 528
 529         /* don't delete a branch if another remote also uses it */
 530         for (kr = branches->keep->list; kr; kr = kr->next) {
 531                 memset(&refspec, 0, sizeof(refspec));
 532                 refspec.dst = (char *)refname;
 533                 if (!remote_find_tracking(kr->remote, &refspec))
 534                         return 0;
 535         }
 536
 537         /* don't delete non-remote-tracking refs */
 538         if (!starts_with(refname, "refs/remotes/")) {
 539                 /* advise user how to delete local branches */
 540                 if (starts_with(refname, "refs/heads/"))
 541                         string_list_append(branches->skipped,
 542                                            abbrev_branch(refname));
 543                 /* silently skip over other non-remote refs */
 544                 return 0;
 545         }
 546
 547         /* make sure that symrefs are deleted */
 548         if (flags & REF_ISSYMREF)
 549                 return unlink(git_path("%s", refname));
 550
 551         string_list_append(branches->branches, refname);
 552
 553         return 0;
 554 }
 555
 556 struct rename_info {
 557         const char *old;
 558         const char *new;
 559         struct string_list *remote_branches;
 560 };
 561
 562 static int read_remote_branches(const char *refname,
 563         const struct object_id *oid, int flags, void *cb_data)
 564 {
 565         struct rename_info *rename = cb_data;
 566         struct strbuf buf = STRBUF_INIT;
 567         struct string_list_item *item;
 568         int flag;
 569         struct object_id orig_oid;
 570         const char *symref;
 571
 572         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 573         if (starts_with(refname, buf.buf)) {
 574                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 575                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 576                                             orig_oid.hash, &flag);
 577                 if (flag & REF_ISSYMREF)
 578                         item->util = xstrdup(symref);
 579                 else
 580                         item->util = NULL;
 581         }
 582
 583         return 0;
 584 }
 585
 586 static int migrate_file(struct remote *remote)
 587 {
 588         struct strbuf buf = STRBUF_INIT;
 589         int i;
 590
 591         strbuf_addf(&buf, "remote.%s.url", remote->name);
 592         for (i = 0; i < remote->url_nr; i++)
 593                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 594                         return error(_("Could not append '%s' to '%s'"),
 595                                         remote->url[i], buf.buf);
 596         strbuf_reset(&buf);
 597         strbuf_addf(&buf, "remote.%s.push", remote->name);
 598         for (i = 0; i < remote->push_refspec_nr; i++)
 599                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 600                         return error(_("Could not append '%s' to '%s'"),
 601                                         remote->push_refspec[i], buf.buf);
 602         strbuf_reset(&buf);
 603         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 604         for (i = 0; i < remote->fetch_refspec_nr; i++)
 605                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 606                         return error(_("Could not append '%s' to '%s'"),
 607                                         remote->fetch_refspec[i], buf.buf);
 608         if (remote->origin == REMOTE_REMOTES)
 609                 unlink_or_warn(git_path("remotes/%s", remote->name));
 610         else if (remote->origin == REMOTE_BRANCHES)
 611                 unlink_or_warn(git_path("branches/%s", remote->name));
 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
 627         if (argc != 3)
 628                 usage_with_options(builtin_remote_rename_usage, options);
 629
 630         rename.old = argv[1];
 631         rename.new = argv[2];
 632         rename.remote_branches = &remote_branches;
 633
 634         oldremote = remote_get(rename.old);
 635         if (!oldremote)
 636                 die(_("No such remote: %s"), rename.old);
 637
 638         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 639                 return migrate_file(oldremote);
 640
 641         newremote = remote_get(rename.new);
 642         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 643                 die(_("remote %s already exists."), rename.new);
 644
 645         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 646         if (!valid_fetch_refspec(buf.buf))
 647                 die(_("'%s' is not a valid remote name"), rename.new);
 648
 649         strbuf_reset(&buf);
 650         strbuf_addf(&buf, "remote.%s", rename.old);
 651         strbuf_addf(&buf2, "remote.%s", rename.new);
 652         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 653                 return error(_("Could not rename config section '%s' to '%s'"),
 654                                 buf.buf, buf2.buf);
 655
 656         strbuf_reset(&buf);
 657         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 658         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 659                 return error(_("Could not remove config section '%s'"), buf.buf);
 660         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 661         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 662                 char *ptr;
 663
 664                 strbuf_reset(&buf2);
 665                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 666                 ptr = strstr(buf2.buf, old_remote_context.buf);
 667                 if (ptr) {
 668                         refspec_updated = 1;
 669                         strbuf_splice(&buf2,
 670                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 671                                       strlen(rename.old), rename.new,
 672                                       strlen(rename.new));
 673                 } else
 674                         warning(_("Not updating non-default fetch refspec\n"
 675                                   "\t%s\n"
 676                                   "\tPlease update the configuration manually if necessary."),
 677                                 buf2.buf);
 678
 679                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 680                         return error(_("Could not append '%s'"), buf.buf);
 681         }
 682
 683         read_branches();
 684         for (i = 0; i < branch_list.nr; i++) {
 685                 struct string_list_item *item = branch_list.items + i;
 686                 struct branch_info *info = item->util;
 687                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 688                         strbuf_reset(&buf);
 689                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 690                         if (git_config_set(buf.buf, rename.new)) {
 691                                 return error(_("Could not set '%s'"), buf.buf);
 692                         }
 693                 }
 694         }
 695
 696         if (!refspec_updated)
 697                 return 0;
 698
 699         /*
 700          * First remove symrefs, then rename the rest, finally create
 701          * the new symrefs.
 702          */
 703         for_each_ref(read_remote_branches, &rename);
 704         for (i = 0; i < remote_branches.nr; i++) {
 705                 struct string_list_item *item = remote_branches.items + i;
 706                 int flag = 0;
 707                 struct object_id oid;
 708
 709                 read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
 710                 if (!(flag & REF_ISSYMREF))
 711                         continue;
 712                 if (delete_ref(item->string, NULL, REF_NODEREF))
 713                         die(_("deleting '%s' failed"), item->string);
 714         }
 715         for (i = 0; i < remote_branches.nr; i++) {
 716                 struct string_list_item *item = remote_branches.items + i;
 717
 718                 if (item->util)
 719                         continue;
 720                 strbuf_reset(&buf);
 721                 strbuf_addstr(&buf, item->string);
 722                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 723                                 rename.new, strlen(rename.new));
 724                 strbuf_reset(&buf2);
 725                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 726                                 item->string, buf.buf);
 727                 if (rename_ref(item->string, buf.buf, buf2.buf))
 728                         die(_("renaming '%s' failed"), item->string);
 729         }
 730         for (i = 0; i < remote_branches.nr; i++) {
 731                 struct string_list_item *item = remote_branches.items + i;
 732
 733                 if (!item->util)
 734                         continue;
 735                 strbuf_reset(&buf);
 736                 strbuf_addstr(&buf, item->string);
 737                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 738                                 rename.new, strlen(rename.new));
 739                 strbuf_reset(&buf2);
 740                 strbuf_addstr(&buf2, item->util);
 741                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 742                                 rename.new, strlen(rename.new));
 743                 strbuf_reset(&buf3);
 744                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 745                                 item->string, buf.buf);
 746                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 747                         die(_("creating '%s' failed"), buf.buf);
 748         }
 749         return 0;
 750 }
 751
 752 static int rm(int argc, const char **argv)
 753 {
 754         struct option options[] = {
 755                 OPT_END()
 756         };
 757         struct remote *remote;
 758         struct strbuf buf = STRBUF_INIT;
 759         struct known_remotes known_remotes = { NULL, NULL };
 760         struct string_list branches = STRING_LIST_INIT_DUP;
 761         struct string_list skipped = STRING_LIST_INIT_DUP;
 762         struct branches_for_remote cb_data;
 763         int i, result;
 764
 765         memset(&cb_data, 0, sizeof(cb_data));
 766         cb_data.branches = &branches;
 767         cb_data.skipped = &skipped;
 768         cb_data.keep = &known_remotes;
 769
 770         if (argc != 2)
 771                 usage_with_options(builtin_remote_rm_usage, options);
 772
 773         remote = remote_get(argv[1]);
 774         if (!remote)
 775                 die(_("No such remote: %s"), argv[1]);
 776
 777         known_remotes.to_delete = remote;
 778         for_each_remote(add_known_remote, &known_remotes);
 779
 780         read_branches();
 781         for (i = 0; i < branch_list.nr; i++) {
 782                 struct string_list_item *item = branch_list.items + i;
 783                 struct branch_info *info = item->util;
 784                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 785                         const char *keys[] = { "remote", "merge", NULL }, **k;
 786                         for (k = keys; *k; k++) {
 787                                 strbuf_reset(&buf);
 788                                 strbuf_addf(&buf, "branch.%s.%s",
 789                                                 item->string, *k);
 790                                 if (git_config_set(buf.buf, NULL)) {
 791                                         strbuf_release(&buf);
 792                                         return -1;
 793                                 }
 794                         }
 795                 }
 796         }
 797
 798         /*
 799          * We cannot just pass a function to for_each_ref() which deletes
 800          * the branches one by one, since for_each_ref() relies on cached
 801          * refs, which are invalidated when deleting a branch.
 802          */
 803         cb_data.remote = remote;
 804         result = for_each_ref(add_branch_for_removal, &cb_data);
 805         strbuf_release(&buf);
 806
 807         if (!result)
 808                 result = delete_refs(&branches);
 809         string_list_clear(&branches, 0);
 810
 811         if (skipped.nr) {
 812                 fprintf_ln(stderr,
 813                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 814                               "to delete it, use:",
 815                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 816                               "to delete them, use:",
 817                               skipped.nr));
 818                 for (i = 0; i < skipped.nr; i++)
 819                         fprintf(stderr, "  git branch -d %s\n",
 820                                 skipped.items[i].string);
 821         }
 822         string_list_clear(&skipped, 0);
 823
 824         if (!result) {
 825                 strbuf_addf(&buf, "remote.%s", remote->name);
 826                 if (git_config_rename_section(buf.buf, NULL) < 1)
 827                         return error(_("Could not remove config section '%s'"), buf.buf);
 828         }
 829
 830         return result;
 831 }
 832
 833 static void clear_push_info(void *util, const char *string)
 834 {
 835         struct push_info *info = util;
 836         free(info->dest);
 837         free(info);
 838 }
 839
 840 static void free_remote_ref_states(struct ref_states *states)
 841 {
 842         string_list_clear(&states->new, 0);
 843         string_list_clear(&states->stale, 1);
 844         string_list_clear(&states->tracked, 0);
 845         string_list_clear(&states->heads, 0);
 846         string_list_clear_func(&states->push, clear_push_info);
 847 }
 848
 849 static int append_ref_to_tracked_list(const char *refname,
 850         const struct object_id *oid, int flags, void *cb_data)
 851 {
 852         struct ref_states *states = cb_data;
 853         struct refspec refspec;
 854
 855         if (flags & REF_ISSYMREF)
 856                 return 0;
 857
 858         memset(&refspec, 0, sizeof(refspec));
 859         refspec.dst = (char *)refname;
 860         if (!remote_find_tracking(states->remote, &refspec))
 861                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 862
 863         return 0;
 864 }
 865
 866 static int get_remote_ref_states(const char *name,
 867                                  struct ref_states *states,
 868                                  int query)
 869 {
 870         struct transport *transport;
 871         const struct ref *remote_refs;
 872
 873         states->remote = remote_get(name);
 874         if (!states->remote)
 875                 return error(_("No such remote: %s"), name);
 876
 877         read_branches();
 878
 879         if (query) {
 880                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 881                         states->remote->url[0] : NULL);
 882                 remote_refs = transport_get_remote_refs(transport);
 883                 transport_disconnect(transport);
 884
 885                 states->queried = 1;
 886                 if (query & GET_REF_STATES)
 887                         get_ref_states(remote_refs, states);
 888                 if (query & GET_HEAD_NAMES)
 889                         get_head_names(remote_refs, states);
 890                 if (query & GET_PUSH_REF_STATES)
 891                         get_push_ref_states(remote_refs, states);
 892         } else {
 893                 for_each_ref(append_ref_to_tracked_list, states);
 894                 string_list_sort(&states->tracked);
 895                 get_push_ref_states_noquery(states);
 896         }
 897
 898         return 0;
 899 }
 900
 901 struct show_info {
 902         struct string_list *list;
 903         struct ref_states *states;
 904         int width, width2;
 905         int any_rebase;
 906 };
 907
 908 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 909 {
 910         struct show_info *info = cb_data;
 911         int n = strlen(item->string);
 912         if (n > info->width)
 913                 info->width = n;
 914         string_list_insert(info->list, item->string);
 915         return 0;
 916 }
 917
 918 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 919 {
 920         struct show_info *info = cb_data;
 921         struct ref_states *states = info->states;
 922         const char *name = item->string;
 923
 924         if (states->queried) {
 925                 const char *fmt = "%s";
 926                 const char *arg = "";
 927                 if (string_list_has_string(&states->new, name)) {
 928                         fmt = _(" new (next fetch will store in remotes/%s)");
 929                         arg = states->remote->name;
 930                 } else if (string_list_has_string(&states->tracked, name))
 931                         arg = _(" tracked");
 932                 else if (string_list_has_string(&states->stale, name))
 933                         arg = _(" stale (use 'git remote prune' to remove)");
 934                 else
 935                         arg = _(" ???");
 936                 printf("    %-*s", info->width, name);
 937                 printf(fmt, arg);
 938                 printf("\n");
 939         } else
 940                 printf("    %s\n", name);
 941
 942         return 0;
 943 }
 944
 945 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 946 {
 947         struct show_info *show_info = cb_data;
 948         struct ref_states *states = show_info->states;
 949         struct branch_info *branch_info = branch_item->util;
 950         struct string_list_item *item;
 951         int n;
 952
 953         if (!branch_info->merge.nr || !branch_info->remote_name ||
 954             strcmp(states->remote->name, branch_info->remote_name))
 955                 return 0;
 956         if ((n = strlen(branch_item->string)) > show_info->width)
 957                 show_info->width = n;
 958         if (branch_info->rebase)
 959                 show_info->any_rebase = 1;
 960
 961         item = string_list_insert(show_info->list, branch_item->string);
 962         item->util = branch_info;
 963
 964         return 0;
 965 }
 966
 967 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 968 {
 969         struct show_info *show_info = cb_data;
 970         struct branch_info *branch_info = item->util;
 971         struct string_list *merge = &branch_info->merge;
 972         const char *also;
 973         int i;
 974
 975         if (branch_info->rebase && branch_info->merge.nr > 1) {
 976                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 977                         item->string);
 978                 return 0;
 979         }
 980
 981         printf("    %-*s ", show_info->width, item->string);
 982         if (branch_info->rebase) {
 983                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
 984                 return 0;
 985         } else if (show_info->any_rebase) {
 986                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 987                 also = _("    and with remote");
 988         } else {
 989                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 990                 also = _("   and with remote");
 991         }
 992         for (i = 1; i < merge->nr; i++)
 993                 printf("    %-*s %s %s\n", show_info->width, "", also,
 994                        merge->items[i].string);
 995
 996         return 0;
 997 }
 998
 999 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1000 {
1001         struct show_info *show_info = cb_data;
1002         struct push_info *push_info = push_item->util;
1003         struct string_list_item *item;
1004         int n;
1005         if ((n = strlen(push_item->string)) > show_info->width)
1006                 show_info->width = n;
1007         if ((n = strlen(push_info->dest)) > show_info->width2)
1008                 show_info->width2 = n;
1009         item = string_list_append(show_info->list, push_item->string);
1010         item->util = push_item->util;
1011         return 0;
1012 }
1013
1014 /*
1015  * Sorting comparison for a string list that has push_info
1016  * structs in its util field
1017  */
1018 static int cmp_string_with_push(const void *va, const void *vb)
1019 {
1020         const struct string_list_item *a = va;
1021         const struct string_list_item *b = vb;
1022         const struct push_info *a_push = a->util;
1023         const struct push_info *b_push = b->util;
1024         int cmp = strcmp(a->string, b->string);
1025         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1026 }
1027
1028 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1029 {
1030         struct show_info *show_info = cb_data;
1031         struct push_info *push_info = item->util;
1032         const char *src = item->string, *status = NULL;
1033
1034         switch (push_info->status) {
1035         case PUSH_STATUS_CREATE:
1036                 status = _("create");
1037                 break;
1038         case PUSH_STATUS_DELETE:
1039                 status = _("delete");
1040                 src = _("(none)");
1041                 break;
1042         case PUSH_STATUS_UPTODATE:
1043                 status = _("up to date");
1044                 break;
1045         case PUSH_STATUS_FASTFORWARD:
1046                 status = _("fast-forwardable");
1047                 break;
1048         case PUSH_STATUS_OUTOFDATE:
1049                 status = _("local out of date");
1050                 break;
1051         case PUSH_STATUS_NOTQUERIED:
1052                 break;
1053         }
1054         if (status) {
1055                 if (push_info->forced)
1056                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1057                                show_info->width2, push_info->dest, status);
1058                 else
1059                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1060                                show_info->width2, push_info->dest, status);
1061         } else {
1062                 if (push_info->forced)
1063                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1064                                push_info->dest);
1065                 else
1066                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1067                                push_info->dest);
1068         }
1069         return 0;
1070 }
1071
1072 static int get_one_entry(struct remote *remote, void *priv)
1073 {
1074         struct string_list *list = priv;
1075         struct strbuf url_buf = STRBUF_INIT;
1076         const char **url;
1077         int i, url_nr;
1078
1079         if (remote->url_nr > 0) {
1080                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1081                 string_list_append(list, remote->name)->util =
1082                                 strbuf_detach(&url_buf, NULL);
1083         } else
1084                 string_list_append(list, remote->name)->util = NULL;
1085         if (remote->pushurl_nr) {
1086                 url = remote->pushurl;
1087                 url_nr = remote->pushurl_nr;
1088         } else {
1089                 url = remote->url;
1090                 url_nr = remote->url_nr;
1091         }
1092         for (i = 0; i < url_nr; i++)
1093         {
1094                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1095                 string_list_append(list, remote->name)->util =
1096                                 strbuf_detach(&url_buf, NULL);
1097         }
1098
1099         return 0;
1100 }
1101
1102 static int show_all(void)
1103 {
1104         struct string_list list = STRING_LIST_INIT_NODUP;
1105         int result;
1106
1107         list.strdup_strings = 1;
1108         result = for_each_remote(get_one_entry, &list);
1109
1110         if (!result) {
1111                 int i;
1112
1113                 string_list_sort(&list);
1114                 for (i = 0; i < list.nr; i++) {
1115                         struct string_list_item *item = list.items + i;
1116                         if (verbose)
1117                                 printf("%s\t%s\n", item->string,
1118                                         item->util ? (const char *)item->util : "");
1119                         else {
1120                                 if (i && !strcmp((item - 1)->string, item->string))
1121                                         continue;
1122                                 printf("%s\n", item->string);
1123                         }
1124                 }
1125         }
1126         string_list_clear(&list, 1);
1127         return result;
1128 }
1129
1130 static int show(int argc, const char **argv)
1131 {
1132         int no_query = 0, result = 0, query_flag = 0;
1133         struct option options[] = {
1134                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1135                 OPT_END()
1136         };
1137         struct ref_states states;
1138         struct string_list info_list = STRING_LIST_INIT_NODUP;
1139         struct show_info info;
1140
1141         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1142                              0);
1143
1144         if (argc < 1)
1145                 return show_all();
1146
1147         if (!no_query)
1148                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1149
1150         memset(&states, 0, sizeof(states));
1151         memset(&info, 0, sizeof(info));
1152         info.states = &states;
1153         info.list = &info_list;
1154         for (; argc; argc--, argv++) {
1155                 int i;
1156                 const char **url;
1157                 int url_nr;
1158
1159                 get_remote_ref_states(*argv, &states, query_flag);
1160
1161                 printf_ln(_("* remote %s"), *argv);
1162                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1163                        states.remote->url[0] : _("(no URL)"));
1164                 if (states.remote->pushurl_nr) {
1165                         url = states.remote->pushurl;
1166                         url_nr = states.remote->pushurl_nr;
1167                 } else {
1168                         url = states.remote->url;
1169                         url_nr = states.remote->url_nr;
1170                 }
1171                 for (i = 0; i < url_nr; i++)
1172                         printf_ln(_("  Push  URL: %s"), url[i]);
1173                 if (!i)
1174                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1175                 if (no_query)
1176                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1177                 else if (!states.heads.nr)
1178                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1179                 else if (states.heads.nr == 1)
1180                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1181                 else {
1182                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1183                                  " may be one of the following):\n"));
1184                         for (i = 0; i < states.heads.nr; i++)
1185                                 printf("    %s\n", states.heads.items[i].string);
1186                 }
1187
1188                 /* remote branch info */
1189                 info.width = 0;
1190                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1191                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1192                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1193                 if (info.list->nr)
1194                         printf_ln(Q_("  Remote branch:%s",
1195                                      "  Remote branches:%s",
1196                                      info.list->nr),
1197                                   no_query ? _(" (status not queried)") : "");
1198                 for_each_string_list(info.list, show_remote_info_item, &info);
1199                 string_list_clear(info.list, 0);
1200
1201                 /* git pull info */
1202                 info.width = 0;
1203                 info.any_rebase = 0;
1204                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1205                 if (info.list->nr)
1206                         printf_ln(Q_("  Local branch configured for 'git pull':",
1207                                      "  Local branches configured for 'git pull':",
1208                                      info.list->nr));
1209                 for_each_string_list(info.list, show_local_info_item, &info);
1210                 string_list_clear(info.list, 0);
1211
1212                 /* git push info */
1213                 if (states.remote->mirror)
1214                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1215
1216                 info.width = info.width2 = 0;
1217                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1218                 qsort(info.list->items, info.list->nr,
1219                         sizeof(*info.list->items), cmp_string_with_push);
1220                 if (info.list->nr)
1221                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1222                                      "  Local refs configured for 'git push'%s:",
1223                                      info.list->nr),
1224                                   no_query ? _(" (status not queried)") : "");
1225                 for_each_string_list(info.list, show_push_info_item, &info);
1226                 string_list_clear(info.list, 0);
1227
1228                 free_remote_ref_states(&states);
1229         }
1230
1231         return result;
1232 }
1233
1234 static int set_head(int argc, const char **argv)
1235 {
1236         int i, opt_a = 0, opt_d = 0, result = 0;
1237         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1238         char *head_name = NULL;
1239
1240         struct option options[] = {
1241                 OPT_BOOL('a', "auto", &opt_a,
1242                          N_("set refs/remotes/<name>/HEAD according to remote")),
1243                 OPT_BOOL('d', "delete", &opt_d,
1244                          N_("delete refs/remotes/<name>/HEAD")),
1245                 OPT_END()
1246         };
1247         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1248                              0);
1249         if (argc)
1250                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1251
1252         if (!opt_a && !opt_d && argc == 2) {
1253                 head_name = xstrdup(argv[1]);
1254         } else if (opt_a && !opt_d && argc == 1) {
1255                 struct ref_states states;
1256                 memset(&states, 0, sizeof(states));
1257                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1258                 if (!states.heads.nr)
1259                         result |= error(_("Cannot determine remote HEAD"));
1260                 else if (states.heads.nr > 1) {
1261                         result |= error(_("Multiple remote HEAD branches. "
1262                                           "Please choose one explicitly with:"));
1263                         for (i = 0; i < states.heads.nr; i++)
1264                                 fprintf(stderr, "  git remote set-head %s %s\n",
1265                                         argv[0], states.heads.items[i].string);
1266                 } else
1267                         head_name = xstrdup(states.heads.items[0].string);
1268                 free_remote_ref_states(&states);
1269         } else if (opt_d && !opt_a && argc == 1) {
1270                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1271                         result |= error(_("Could not delete %s"), buf.buf);
1272         } else
1273                 usage_with_options(builtin_remote_sethead_usage, options);
1274
1275         if (head_name) {
1276                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1277                 /* make sure it's valid */
1278                 if (!ref_exists(buf2.buf))
1279                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1280                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1281                         result |= error(_("Could not setup %s"), buf.buf);
1282                 if (opt_a)
1283                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1284                 free(head_name);
1285         }
1286
1287         strbuf_release(&buf);
1288         strbuf_release(&buf2);
1289         return result;
1290 }
1291
1292 static int prune_remote(const char *remote, int dry_run)
1293 {
1294         int result = 0;
1295         struct ref_states states;
1296         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1297         struct string_list_item *item;
1298         const char *dangling_msg = dry_run
1299                 ? _(" %s will become dangling!")
1300                 : _(" %s has become dangling!");
1301
1302         memset(&states, 0, sizeof(states));
1303         get_remote_ref_states(remote, &states, GET_REF_STATES);
1304
1305         if (!states.stale.nr) {
1306                 free_remote_ref_states(&states);
1307                 return 0;
1308         }
1309
1310         printf_ln(_("Pruning %s"), remote);
1311         printf_ln(_("URL: %s"),
1312                   states.remote->url_nr
1313                   ? states.remote->url[0]
1314                   : _("(no URL)"));
1315
1316         for_each_string_list_item(item, &states.stale)
1317                 string_list_append(&refs_to_prune, item->util);
1318         string_list_sort(&refs_to_prune);
1319
1320         if (!dry_run)
1321                 result |= delete_refs(&refs_to_prune);
1322
1323         for_each_string_list_item(item, &states.stale) {
1324                 const char *refname = item->util;
1325
1326                 if (dry_run)
1327                         printf_ln(_(" * [would prune] %s"),
1328                                abbrev_ref(refname, "refs/remotes/"));
1329                 else
1330                         printf_ln(_(" * [pruned] %s"),
1331                                abbrev_ref(refname, "refs/remotes/"));
1332         }
1333
1334         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1335
1336         string_list_clear(&refs_to_prune, 0);
1337         free_remote_ref_states(&states);
1338         return result;
1339 }
1340
1341 static int prune(int argc, const char **argv)
1342 {
1343         int dry_run = 0, result = 0;
1344         struct option options[] = {
1345                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1346                 OPT_END()
1347         };
1348
1349         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1350                              0);
1351
1352         if (argc < 1)
1353                 usage_with_options(builtin_remote_prune_usage, options);
1354
1355         for (; argc; argc--, argv++)
1356                 result |= prune_remote(*argv, dry_run);
1357
1358         return result;
1359 }
1360
1361 static int get_remote_default(const char *key, const char *value, void *priv)
1362 {
1363         if (strcmp(key, "remotes.default") == 0) {
1364                 int *found = priv;
1365                 *found = 1;
1366         }
1367         return 0;
1368 }
1369
1370 static int update(int argc, const char **argv)
1371 {
1372         int i, prune = -1;
1373         struct option options[] = {
1374                 OPT_BOOL('p', "prune", &prune,
1375                          N_("prune remotes after fetching")),
1376                 OPT_END()
1377         };
1378         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1379         int default_defined = 0;
1380         int retval;
1381
1382         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1383                              PARSE_OPT_KEEP_ARGV0);
1384
1385         argv_array_push(&fetch_argv, "fetch");
1386
1387         if (prune != -1)
1388                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1389         if (verbose)
1390                 argv_array_push(&fetch_argv, "-v");
1391         argv_array_push(&fetch_argv, "--multiple");
1392         if (argc < 2)
1393                 argv_array_push(&fetch_argv, "default");
1394         for (i = 1; i < argc; i++)
1395                 argv_array_push(&fetch_argv, argv[i]);
1396
1397         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1398                 git_config(get_remote_default, &default_defined);
1399                 if (!default_defined) {
1400                         argv_array_pop(&fetch_argv);
1401                         argv_array_push(&fetch_argv, "--all");
1402                 }
1403         }
1404
1405         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1406         argv_array_clear(&fetch_argv);
1407         return retval;
1408 }
1409
1410 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1411 {
1412         return git_config_set_multivar(key, NULL, NULL, 1);
1413 }
1414
1415 static int add_branches(struct remote *remote, const char **branches,
1416                         const char *key)
1417 {
1418         const char *remotename = remote->name;
1419         int mirror = remote->mirror;
1420         struct strbuf refspec = STRBUF_INIT;
1421
1422         for (; *branches; branches++)
1423                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1424                         strbuf_release(&refspec);
1425                         return 1;
1426                 }
1427
1428         strbuf_release(&refspec);
1429         return 0;
1430 }
1431
1432 static int set_remote_branches(const char *remotename, const char **branches,
1433                                 int add_mode)
1434 {
1435         struct strbuf key = STRBUF_INIT;
1436         struct remote *remote;
1437
1438         strbuf_addf(&key, "remote.%s.fetch", remotename);
1439
1440         if (!remote_is_configured(remotename))
1441                 die(_("No such remote '%s'"), remotename);
1442         remote = remote_get(remotename);
1443
1444         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1445                 strbuf_release(&key);
1446                 return 1;
1447         }
1448         if (add_branches(remote, branches, key.buf)) {
1449                 strbuf_release(&key);
1450                 return 1;
1451         }
1452
1453         strbuf_release(&key);
1454         return 0;
1455 }
1456
1457 static int set_branches(int argc, const char **argv)
1458 {
1459         int add_mode = 0;
1460         struct option options[] = {
1461                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1462                 OPT_END()
1463         };
1464
1465         argc = parse_options(argc, argv, NULL, options,
1466                              builtin_remote_setbranches_usage, 0);
1467         if (argc == 0) {
1468                 error(_("no remote specified"));
1469                 usage_with_options(builtin_remote_setbranches_usage, options);
1470         }
1471         argv[argc] = NULL;
1472
1473         return set_remote_branches(argv[0], argv + 1, add_mode);
1474 }
1475
1476 static int get_url(int argc, const char **argv)
1477 {
1478         int i, push_mode = 0, all_mode = 0;
1479         const char *remotename = NULL;
1480         struct remote *remote;
1481         const char **url;
1482         int url_nr;
1483         struct option options[] = {
1484                 OPT_BOOL('\0', "push", &push_mode,
1485                          N_("query push URLs rather than fetch URLs")),
1486                 OPT_BOOL('\0', "all", &all_mode,
1487                          N_("return all URLs")),
1488                 OPT_END()
1489         };
1490         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1491
1492         if (argc != 1)
1493                 usage_with_options(builtin_remote_geturl_usage, options);
1494
1495         remotename = argv[0];
1496
1497         if (!remote_is_configured(remotename))
1498                 die(_("No such remote '%s'"), remotename);
1499         remote = remote_get(remotename);
1500
1501         url_nr = 0;
1502         if (push_mode) {
1503                 url = remote->pushurl;
1504                 url_nr = remote->pushurl_nr;
1505         }
1506         /* else fetch mode */
1507
1508         /* Use the fetch URL when no push URLs were found or requested. */
1509         if (!url_nr) {
1510                 url = remote->url;
1511                 url_nr = remote->url_nr;
1512         }
1513
1514         if (!url_nr)
1515                 die(_("no URLs configured for remote '%s'"), remotename);
1516
1517         if (all_mode) {
1518                 for (i = 0; i < url_nr; i++)
1519                         printf_ln("%s", url[i]);
1520         } else {
1521                 printf_ln("%s", *url);
1522         }
1523
1524         return 0;
1525 }
1526
1527 static int set_url(int argc, const char **argv)
1528 {
1529         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1530         int matches = 0, negative_matches = 0;
1531         const char *remotename = NULL;
1532         const char *newurl = NULL;
1533         const char *oldurl = NULL;
1534         struct remote *remote;
1535         regex_t old_regex;
1536         const char **urlset;
1537         int urlset_nr;
1538         struct strbuf name_buf = STRBUF_INIT;
1539         struct option options[] = {
1540                 OPT_BOOL('\0', "push", &push_mode,
1541                          N_("manipulate push URLs")),
1542                 OPT_BOOL('\0', "add", &add_mode,
1543                          N_("add URL")),
1544                 OPT_BOOL('\0', "delete", &delete_mode,
1545                             N_("delete URLs")),
1546                 OPT_END()
1547         };
1548         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1549                              PARSE_OPT_KEEP_ARGV0);
1550
1551         if (add_mode && delete_mode)
1552                 die(_("--add --delete doesn't make sense"));
1553
1554         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1555                 usage_with_options(builtin_remote_seturl_usage, options);
1556
1557         remotename = argv[1];
1558         newurl = argv[2];
1559         if (argc > 3)
1560                 oldurl = argv[3];
1561
1562         if (delete_mode)
1563                 oldurl = newurl;
1564
1565         if (!remote_is_configured(remotename))
1566                 die(_("No such remote '%s'"), remotename);
1567         remote = remote_get(remotename);
1568
1569         if (push_mode) {
1570                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1571                 urlset = remote->pushurl;
1572                 urlset_nr = remote->pushurl_nr;
1573         } else {
1574                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1575                 urlset = remote->url;
1576                 urlset_nr = remote->url_nr;
1577         }
1578
1579         /* Special cases that add new entry. */
1580         if ((!oldurl && !delete_mode) || add_mode) {
1581                 if (add_mode)
1582                         git_config_set_multivar(name_buf.buf, newurl,
1583                                 "^$", 0);
1584                 else
1585                         git_config_set(name_buf.buf, newurl);
1586                 strbuf_release(&name_buf);
1587                 return 0;
1588         }
1589
1590         /* Old URL specified. Demand that one matches. */
1591         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1592                 die(_("Invalid old URL pattern: %s"), oldurl);
1593
1594         for (i = 0; i < urlset_nr; i++)
1595                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1596                         matches++;
1597                 else
1598                         negative_matches++;
1599         if (!delete_mode && !matches)
1600                 die(_("No such URL found: %s"), oldurl);
1601         if (delete_mode && !negative_matches && !push_mode)
1602                 die(_("Will not delete all non-push URLs"));
1603
1604         regfree(&old_regex);
1605
1606         if (!delete_mode)
1607                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1608         else
1609                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1610         return 0;
1611 }
1612
1613 int cmd_remote(int argc, const char **argv, const char *prefix)
1614 {
1615         struct option options[] = {
1616                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1617                 OPT_END()
1618         };
1619         int result;
1620
1621         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1622                 PARSE_OPT_STOP_AT_NON_OPTION);
1623
1624         if (argc < 1)
1625                 result = show_all();
1626         else if (!strcmp(argv[0], "add"))
1627                 result = add(argc, argv);
1628         else if (!strcmp(argv[0], "rename"))
1629                 result = mv(argc, argv);
1630         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1631                 result = rm(argc, argv);
1632         else if (!strcmp(argv[0], "set-head"))
1633                 result = set_head(argc, argv);
1634         else if (!strcmp(argv[0], "set-branches"))
1635                 result = set_branches(argc, argv);
1636         else if (!strcmp(argv[0], "get-url"))
1637                 result = get_url(argc, argv);
1638         else if (!strcmp(argv[0], "set-url"))
1639                 result = set_url(argc, argv);
1640         else if (!strcmp(argv[0], "show"))
1641                 result = show(argc, argv);
1642         else if (!strcmp(argv[0], "prune"))
1643                 result = prune(argc, argv);
1644         else if (!strcmp(argv[0], "update"))
1645                 result = update(argc, argv);
1646         else {
1647                 error(_("Unknown subcommand: %s"), argv[0]);
1648                 usage_with_options(builtin_remote_usage, options);
1649         }
1650
1651         return result ? 1 : 0;
1652 }