git.oblomov.eu Git - git/blob - builtin/remote.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "parse-options.h"
   4 #include "transport.h"
   5 #include "remote.h"
   6 #include "string-list.h"
   7 #include "strbuf.h"
   8 #include "run-command.h"
   9 #include "refs.h"
  10 #include "refspec.h"
  11 #include "argv-array.h"
  12
  13 static const char * const builtin_remote_usage[] = {
  14         N_("git remote [-v | --verbose]"),
  15         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
  16         N_("git remote rename <old> <new>"),
  17         N_("git remote remove <name>"),
  18         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  19         N_("git remote [-v | --verbose] show [-n] <name>"),
  20         N_("git remote prune [-n | --dry-run] <name>"),
  21         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  22         N_("git remote set-branches [--add] <name> <branch>..."),
  23         N_("git remote get-url [--push] [--all] <name>"),
  24         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  25         N_("git remote set-url --add <name> <newurl>"),
  26         N_("git remote set-url --delete <name> <url>"),
  27         NULL
  28 };
  29
  30 static const char * const builtin_remote_add_usage[] = {
  31         N_("git remote add [<options>] <name> <url>"),
  32         NULL
  33 };
  34
  35 static const char * const builtin_remote_rename_usage[] = {
  36         N_("git remote rename <old> <new>"),
  37         NULL
  38 };
  39
  40 static const char * const builtin_remote_rm_usage[] = {
  41         N_("git remote remove <name>"),
  42         NULL
  43 };
  44
  45 static const char * const builtin_remote_sethead_usage[] = {
  46         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  47         NULL
  48 };
  49
  50 static const char * const builtin_remote_setbranches_usage[] = {
  51         N_("git remote set-branches <name> <branch>..."),
  52         N_("git remote set-branches --add <name> <branch>..."),
  53         NULL
  54 };
  55
  56 static const char * const builtin_remote_show_usage[] = {
  57         N_("git remote show [<options>] <name>"),
  58         NULL
  59 };
  60
  61 static const char * const builtin_remote_prune_usage[] = {
  62         N_("git remote prune [<options>] <name>"),
  63         NULL
  64 };
  65
  66 static const char * const builtin_remote_update_usage[] = {
  67         N_("git remote update [<options>] [<group> | <remote>]..."),
  68         NULL
  69 };
  70
  71 static const char * const builtin_remote_geturl_usage[] = {
  72         N_("git remote get-url [--push] [--all] <name>"),
  73         NULL
  74 };
  75
  76 static const char * const builtin_remote_seturl_usage[] = {
  77         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  78         N_("git remote set-url --add <name> <newurl>"),
  79         N_("git remote set-url --delete <name> <url>"),
  80         NULL
  81 };
  82
  83 #define GET_REF_STATES (1<<0)
  84 #define GET_HEAD_NAMES (1<<1)
  85 #define GET_PUSH_REF_STATES (1<<2)
  86
  87 static int verbose;
  88
  89 static int fetch_remote(const char *name)
  90 {
  91         const char *argv[] = { "fetch", name, NULL, NULL };
  92         if (verbose) {
  93                 argv[1] = "-v";
  94                 argv[2] = name;
  95         }
  96         printf_ln(_("Updating %s"), name);
  97         if (run_command_v_opt(argv, RUN_GIT_CMD))
  98                 return error(_("Could not fetch %s"), name);
  99         return 0;
 100 }
 101
 102 enum {
 103         TAGS_UNSET = 0,
 104         TAGS_DEFAULT = 1,
 105         TAGS_SET = 2
 106 };
 107
 108 #define MIRROR_NONE 0
 109 #define MIRROR_FETCH 1
 110 #define MIRROR_PUSH 2
 111 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 112
 113 static void add_branch(const char *key, const char *branchname,
 114                        const char *remotename, int mirror, struct strbuf *tmp)
 115 {
 116         strbuf_reset(tmp);
 117         strbuf_addch(tmp, '+');
 118         if (mirror)
 119                 strbuf_addf(tmp, "refs/%s:refs/%s",
 120                                 branchname, branchname);
 121         else
 122                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 123                                 branchname, remotename, branchname);
 124         git_config_set_multivar(key, tmp->buf, "^$", 0);
 125 }
 126
 127 static const char mirror_advice[] =
 128 N_("--mirror is dangerous and deprecated; please\n"
 129    "\t use --mirror=fetch or --mirror=push instead");
 130
 131 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 132 {
 133         unsigned *mirror = opt->value;
 134         if (not)
 135                 *mirror = MIRROR_NONE;
 136         else if (!arg) {
 137                 warning("%s", _(mirror_advice));
 138                 *mirror = MIRROR_BOTH;
 139         }
 140         else if (!strcmp(arg, "fetch"))
 141                 *mirror = MIRROR_FETCH;
 142         else if (!strcmp(arg, "push"))
 143                 *mirror = MIRROR_PUSH;
 144         else
 145                 return error(_("unknown mirror argument: %s"), arg);
 146         return 0;
 147 }
 148
 149 static int add(int argc, const char **argv)
 150 {
 151         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 152         unsigned mirror = MIRROR_NONE;
 153         struct string_list track = STRING_LIST_INIT_NODUP;
 154         const char *master = NULL;
 155         struct remote *remote;
 156         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 157         const char *name, *url;
 158         int i;
 159
 160         struct option options[] = {
 161                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 162                 OPT_SET_INT(0, "tags", &fetch_tags,
 163                             N_("import all tags and associated objects when fetching"),
 164                             TAGS_SET),
 165                 OPT_SET_INT(0, NULL, &fetch_tags,
 166                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 167                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 168                                 N_("branch(es) to track")),
 169                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 170                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 171                         N_("set up remote as a mirror to push to or fetch from"),
 172                         PARSE_OPT_OPTARG | PARSE_OPT_COMP_ARG, parse_mirror_opt },
 173                 OPT_END()
 174         };
 175
 176         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 177                              0);
 178
 179         if (argc != 2)
 180                 usage_with_options(builtin_remote_add_usage, options);
 181
 182         if (mirror && master)
 183                 die(_("specifying a master branch makes no sense with --mirror"));
 184         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 185                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 186
 187         name = argv[0];
 188         url = argv[1];
 189
 190         remote = remote_get(name);
 191         if (remote_is_configured(remote, 1))
 192                 die(_("remote %s already exists."), name);
 193
 194         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 195         if (!valid_fetch_refspec(buf2.buf))
 196                 die(_("'%s' is not a valid remote name"), name);
 197
 198         strbuf_addf(&buf, "remote.%s.url", name);
 199         git_config_set(buf.buf, url);
 200
 201         if (!mirror || mirror & MIRROR_FETCH) {
 202                 strbuf_reset(&buf);
 203                 strbuf_addf(&buf, "remote.%s.fetch", name);
 204                 if (track.nr == 0)
 205                         string_list_append(&track, "*");
 206                 for (i = 0; i < track.nr; i++) {
 207                         add_branch(buf.buf, track.items[i].string,
 208                                    name, mirror, &buf2);
 209                 }
 210         }
 211
 212         if (mirror & MIRROR_PUSH) {
 213                 strbuf_reset(&buf);
 214                 strbuf_addf(&buf, "remote.%s.mirror", name);
 215                 git_config_set(buf.buf, "true");
 216         }
 217
 218         if (fetch_tags != TAGS_DEFAULT) {
 219                 strbuf_reset(&buf);
 220                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 221                 git_config_set(buf.buf,
 222                                fetch_tags == TAGS_SET ? "--tags" : "--no-tags");
 223         }
 224
 225         if (fetch && fetch_remote(name))
 226                 return 1;
 227
 228         if (master) {
 229                 strbuf_reset(&buf);
 230                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 231
 232                 strbuf_reset(&buf2);
 233                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 234
 235                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 236                         return error(_("Could not setup master '%s'"), master);
 237         }
 238
 239         strbuf_release(&buf);
 240         strbuf_release(&buf2);
 241         string_list_clear(&track, 0);
 242
 243         return 0;
 244 }
 245
 246 struct branch_info {
 247         char *remote_name;
 248         struct string_list merge;
 249         enum {
 250                 NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE, REBASE_MERGES
 251         } rebase;
 252 };
 253
 254 static struct string_list branch_list = STRING_LIST_INIT_NODUP;
 255
 256 static const char *abbrev_ref(const char *name, const char *prefix)
 257 {
 258         skip_prefix(name, prefix, &name);
 259         return name;
 260 }
 261 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 262
 263 static int config_read_branches(const char *key, const char *value, void *cb)
 264 {
 265         if (starts_with(key, "branch.")) {
 266                 const char *orig_key = key;
 267                 char *name;
 268                 struct string_list_item *item;
 269                 struct branch_info *info;
 270                 enum { REMOTE, MERGE, REBASE } type;
 271                 size_t key_len;
 272
 273                 key += 7;
 274                 if (strip_suffix(key, ".remote", &key_len)) {
 275                         name = xmemdupz(key, key_len);
 276                         type = REMOTE;
 277                 } else if (strip_suffix(key, ".merge", &key_len)) {
 278                         name = xmemdupz(key, key_len);
 279                         type = MERGE;
 280                 } else if (strip_suffix(key, ".rebase", &key_len)) {
 281                         name = xmemdupz(key, key_len);
 282                         type = REBASE;
 283                 } else
 284                         return 0;
 285
 286                 item = string_list_insert(&branch_list, name);
 287
 288                 if (!item->util)
 289                         item->util = xcalloc(1, sizeof(struct branch_info));
 290                 info = item->util;
 291                 if (type == REMOTE) {
 292                         if (info->remote_name)
 293                                 warning(_("more than one %s"), orig_key);
 294                         info->remote_name = xstrdup(value);
 295                 } else if (type == MERGE) {
 296                         char *space = strchr(value, ' ');
 297                         value = abbrev_branch(value);
 298                         while (space) {
 299                                 char *merge;
 300                                 merge = xstrndup(value, space - value);
 301                                 string_list_append(&info->merge, merge);
 302                                 value = abbrev_branch(space + 1);
 303                                 space = strchr(value, ' ');
 304                         }
 305                         string_list_append(&info->merge, xstrdup(value));
 306                 } else {
 307                         int v = git_parse_maybe_bool(value);
 308                         if (v >= 0)
 309                                 info->rebase = v;
 310                         else if (!strcmp(value, "preserve"))
 311                                 info->rebase = NORMAL_REBASE;
 312                         else if (!strcmp(value, "merges"))
 313                                 info->rebase = REBASE_MERGES;
 314                         else if (!strcmp(value, "interactive"))
 315                                 info->rebase = INTERACTIVE_REBASE;
 316                 }
 317         }
 318         return 0;
 319 }
 320
 321 static void read_branches(void)
 322 {
 323         if (branch_list.nr)
 324                 return;
 325         git_config(config_read_branches, NULL);
 326 }
 327
 328 struct ref_states {
 329         struct remote *remote;
 330         struct string_list new_refs, stale, tracked, heads, push;
 331         int queried;
 332 };
 333
 334 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 335 {
 336         struct ref *fetch_map = NULL, **tail = &fetch_map;
 337         struct ref *ref, *stale_refs;
 338         int i;
 339
 340         for (i = 0; i < states->remote->fetch.nr; i++)
 341                 if (get_fetch_map(remote_refs, &states->remote->fetch.items[i], &tail, 1))
 342                         die(_("Could not get fetch map for refspec %s"),
 343                                 states->remote->fetch.raw[i]);
 344
 345         states->new_refs.strdup_strings = 1;
 346         states->tracked.strdup_strings = 1;
 347         states->stale.strdup_strings = 1;
 348         for (ref = fetch_map; ref; ref = ref->next) {
 349                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 350                         string_list_append(&states->new_refs, abbrev_branch(ref->name));
 351                 else
 352                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 353         }
 354         stale_refs = get_stale_heads(&states->remote->fetch, 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_refs);
 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, MATCH_REFS_NONE);
 395
 396         states->push.strdup_strings = 1;
 397         for (ref = push_map; ref; ref = ref->next) {
 398                 struct string_list_item *item;
 399                 struct push_info *info;
 400
 401                 if (!ref->peer_ref)
 402                         continue;
 403                 oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
 404
 405                 item = string_list_append(&states->push,
 406                                           abbrev_branch(ref->peer_ref->name));
 407                 item->util = xcalloc(1, sizeof(struct push_info));
 408                 info = item->util;
 409                 info->forced = ref->force;
 410                 info->dest = xstrdup(abbrev_branch(ref->name));
 411
 412                 if (is_null_oid(&ref->new_oid)) {
 413                         info->status = PUSH_STATUS_DELETE;
 414                 } else if (!oidcmp(&ref->old_oid, &ref->new_oid))
 415                         info->status = PUSH_STATUS_UPTODATE;
 416                 else if (is_null_oid(&ref->old_oid))
 417                         info->status = PUSH_STATUS_CREATE;
 418                 else if (has_object_file(&ref->old_oid) &&
 419                          ref_newer(&ref->new_oid, &ref->old_oid))
 420                         info->status = PUSH_STATUS_FASTFORWARD;
 421                 else
 422                         info->status = PUSH_STATUS_OUTOFDATE;
 423         }
 424         free_refs(local_refs);
 425         free_refs(push_map);
 426         return 0;
 427 }
 428
 429 static int get_push_ref_states_noquery(struct ref_states *states)
 430 {
 431         int i;
 432         struct remote *remote = states->remote;
 433         struct string_list_item *item;
 434         struct push_info *info;
 435
 436         if (remote->mirror)
 437                 return 0;
 438
 439         states->push.strdup_strings = 1;
 440         if (!remote->push.nr) {
 441                 item = string_list_append(&states->push, _("(matching)"));
 442                 info = item->util = xcalloc(1, sizeof(struct push_info));
 443                 info->status = PUSH_STATUS_NOTQUERIED;
 444                 info->dest = xstrdup(item->string);
 445         }
 446         for (i = 0; i < remote->push.nr; i++) {
 447                 const struct refspec_item *spec = &remote->push.items[i];
 448                 if (spec->matching)
 449                         item = string_list_append(&states->push, _("(matching)"));
 450                 else if (strlen(spec->src))
 451                         item = string_list_append(&states->push, spec->src);
 452                 else
 453                         item = string_list_append(&states->push, _("(delete)"));
 454
 455                 info = item->util = xcalloc(1, sizeof(struct push_info));
 456                 info->forced = spec->force;
 457                 info->status = PUSH_STATUS_NOTQUERIED;
 458                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 459         }
 460         return 0;
 461 }
 462
 463 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 464 {
 465         struct ref *ref, *matches;
 466         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 467         struct refspec_item refspec;
 468
 469         refspec.force = 0;
 470         refspec.pattern = 1;
 471         refspec.src = refspec.dst = "refs/heads/*";
 472         states->heads.strdup_strings = 1;
 473         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 474         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 475                                     fetch_map, 1);
 476         for (ref = matches; ref; ref = ref->next)
 477                 string_list_append(&states->heads, abbrev_branch(ref->name));
 478
 479         free_refs(fetch_map);
 480         free_refs(matches);
 481
 482         return 0;
 483 }
 484
 485 struct known_remote {
 486         struct known_remote *next;
 487         struct remote *remote;
 488 };
 489
 490 struct known_remotes {
 491         struct remote *to_delete;
 492         struct known_remote *list;
 493 };
 494
 495 static int add_known_remote(struct remote *remote, void *cb_data)
 496 {
 497         struct known_remotes *all = cb_data;
 498         struct known_remote *r;
 499
 500         if (!strcmp(all->to_delete->name, remote->name))
 501                 return 0;
 502
 503         r = xmalloc(sizeof(*r));
 504         r->remote = remote;
 505         r->next = all->list;
 506         all->list = r;
 507         return 0;
 508 }
 509
 510 struct branches_for_remote {
 511         struct remote *remote;
 512         struct string_list *branches, *skipped;
 513         struct known_remotes *keep;
 514 };
 515
 516 static int add_branch_for_removal(const char *refname,
 517         const struct object_id *oid, int flags, void *cb_data)
 518 {
 519         struct branches_for_remote *branches = cb_data;
 520         struct refspec_item refspec;
 521         struct known_remote *kr;
 522
 523         memset(&refspec, 0, sizeof(refspec));
 524         refspec.dst = (char *)refname;
 525         if (remote_find_tracking(branches->remote, &refspec))
 526                 return 0;
 527
 528         /* don't delete a branch if another remote also uses it */
 529         for (kr = branches->keep->list; kr; kr = kr->next) {
 530                 memset(&refspec, 0, sizeof(refspec));
 531                 refspec.dst = (char *)refname;
 532                 if (!remote_find_tracking(kr->remote, &refspec))
 533                         return 0;
 534         }
 535
 536         /* don't delete non-remote-tracking refs */
 537         if (!starts_with(refname, "refs/remotes/")) {
 538                 /* advise user how to delete local branches */
 539                 if (starts_with(refname, "refs/heads/"))
 540                         string_list_append(branches->skipped,
 541                                            abbrev_branch(refname));
 542                 /* silently skip over other non-remote refs */
 543                 return 0;
 544         }
 545
 546         string_list_append(branches->branches, refname);
 547
 548         return 0;
 549 }
 550
 551 struct rename_info {
 552         const char *old_name;
 553         const char *new_name;
 554         struct string_list *remote_branches;
 555 };
 556
 557 static int read_remote_branches(const char *refname,
 558         const struct object_id *oid, int flags, void *cb_data)
 559 {
 560         struct rename_info *rename = cb_data;
 561         struct strbuf buf = STRBUF_INIT;
 562         struct string_list_item *item;
 563         int flag;
 564         const char *symref;
 565
 566         strbuf_addf(&buf, "refs/remotes/%s/", rename->old_name);
 567         if (starts_with(refname, buf.buf)) {
 568                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 569                 symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
 570                                             NULL, &flag);
 571                 if (symref && (flag & REF_ISSYMREF))
 572                         item->util = xstrdup(symref);
 573                 else
 574                         item->util = NULL;
 575         }
 576         strbuf_release(&buf);
 577
 578         return 0;
 579 }
 580
 581 static int migrate_file(struct remote *remote)
 582 {
 583         struct strbuf buf = STRBUF_INIT;
 584         int i;
 585
 586         strbuf_addf(&buf, "remote.%s.url", remote->name);
 587         for (i = 0; i < remote->url_nr; i++)
 588                 git_config_set_multivar(buf.buf, remote->url[i], "^$", 0);
 589         strbuf_reset(&buf);
 590         strbuf_addf(&buf, "remote.%s.push", remote->name);
 591         for (i = 0; i < remote->push.raw_nr; i++)
 592                 git_config_set_multivar(buf.buf, remote->push.raw[i], "^$", 0);
 593         strbuf_reset(&buf);
 594         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 595         for (i = 0; i < remote->fetch.raw_nr; i++)
 596                 git_config_set_multivar(buf.buf, remote->fetch.raw[i], "^$", 0);
 597         if (remote->origin == REMOTE_REMOTES)
 598                 unlink_or_warn(git_path("remotes/%s", remote->name));
 599         else if (remote->origin == REMOTE_BRANCHES)
 600                 unlink_or_warn(git_path("branches/%s", remote->name));
 601         strbuf_release(&buf);
 602
 603         return 0;
 604 }
 605
 606 static int mv(int argc, const char **argv)
 607 {
 608         struct option options[] = {
 609                 OPT_END()
 610         };
 611         struct remote *oldremote, *newremote;
 612         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 613                 old_remote_context = STRBUF_INIT;
 614         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 615         struct rename_info rename;
 616         int i, refspec_updated = 0;
 617
 618         if (argc != 3)
 619                 usage_with_options(builtin_remote_rename_usage, options);
 620
 621         rename.old_name = argv[1];
 622         rename.new_name = argv[2];
 623         rename.remote_branches = &remote_branches;
 624
 625         oldremote = remote_get(rename.old_name);
 626         if (!remote_is_configured(oldremote, 1))
 627                 die(_("No such remote: %s"), rename.old_name);
 628
 629         if (!strcmp(rename.old_name, rename.new_name) && oldremote->origin != REMOTE_CONFIG)
 630                 return migrate_file(oldremote);
 631
 632         newremote = remote_get(rename.new_name);
 633         if (remote_is_configured(newremote, 1))
 634                 die(_("remote %s already exists."), rename.new_name);
 635
 636         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new_name);
 637         if (!valid_fetch_refspec(buf.buf))
 638                 die(_("'%s' is not a valid remote name"), rename.new_name);
 639
 640         strbuf_reset(&buf);
 641         strbuf_addf(&buf, "remote.%s", rename.old_name);
 642         strbuf_addf(&buf2, "remote.%s", rename.new_name);
 643         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 644                 return error(_("Could not rename config section '%s' to '%s'"),
 645                                 buf.buf, buf2.buf);
 646
 647         strbuf_reset(&buf);
 648         strbuf_addf(&buf, "remote.%s.fetch", rename.new_name);
 649         git_config_set_multivar(buf.buf, NULL, NULL, 1);
 650         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old_name);
 651         for (i = 0; i < oldremote->fetch.raw_nr; i++) {
 652                 char *ptr;
 653
 654                 strbuf_reset(&buf2);
 655                 strbuf_addstr(&buf2, oldremote->fetch.raw[i]);
 656                 ptr = strstr(buf2.buf, old_remote_context.buf);
 657                 if (ptr) {
 658                         refspec_updated = 1;
 659                         strbuf_splice(&buf2,
 660                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 661                                       strlen(rename.old_name), rename.new_name,
 662                                       strlen(rename.new_name));
 663                 } else
 664                         warning(_("Not updating non-default fetch refspec\n"
 665                                   "\t%s\n"
 666                                   "\tPlease update the configuration manually if necessary."),
 667                                 buf2.buf);
 668
 669                 git_config_set_multivar(buf.buf, buf2.buf, "^$", 0);
 670         }
 671
 672         read_branches();
 673         for (i = 0; i < branch_list.nr; i++) {
 674                 struct string_list_item *item = branch_list.items + i;
 675                 struct branch_info *info = item->util;
 676                 if (info->remote_name && !strcmp(info->remote_name, rename.old_name)) {
 677                         strbuf_reset(&buf);
 678                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 679                         git_config_set(buf.buf, rename.new_name);
 680                 }
 681         }
 682
 683         if (!refspec_updated)
 684                 return 0;
 685
 686         /*
 687          * First remove symrefs, then rename the rest, finally create
 688          * the new symrefs.
 689          */
 690         for_each_ref(read_remote_branches, &rename);
 691         for (i = 0; i < remote_branches.nr; i++) {
 692                 struct string_list_item *item = remote_branches.items + i;
 693                 int flag = 0;
 694                 struct object_id oid;
 695
 696                 read_ref_full(item->string, RESOLVE_REF_READING, &oid, &flag);
 697                 if (!(flag & REF_ISSYMREF))
 698                         continue;
 699                 if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
 700                         die(_("deleting '%s' failed"), item->string);
 701         }
 702         for (i = 0; i < remote_branches.nr; i++) {
 703                 struct string_list_item *item = remote_branches.items + i;
 704
 705                 if (item->util)
 706                         continue;
 707                 strbuf_reset(&buf);
 708                 strbuf_addstr(&buf, item->string);
 709                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old_name),
 710                                 rename.new_name, strlen(rename.new_name));
 711                 strbuf_reset(&buf2);
 712                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 713                                 item->string, buf.buf);
 714                 if (rename_ref(item->string, buf.buf, buf2.buf))
 715                         die(_("renaming '%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_name),
 725                                 rename.new_name, strlen(rename.new_name));
 726                 strbuf_reset(&buf2);
 727                 strbuf_addstr(&buf2, item->util);
 728                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old_name),
 729                                 rename.new_name, strlen(rename.new_name));
 730                 strbuf_reset(&buf3);
 731                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 732                                 item->string, buf.buf);
 733                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 734                         die(_("creating '%s' failed"), buf.buf);
 735         }
 736         return 0;
 737 }
 738
 739 static int rm(int argc, const char **argv)
 740 {
 741         struct option options[] = {
 742                 OPT_END()
 743         };
 744         struct remote *remote;
 745         struct strbuf buf = STRBUF_INIT;
 746         struct known_remotes known_remotes = { NULL, NULL };
 747         struct string_list branches = STRING_LIST_INIT_DUP;
 748         struct string_list skipped = STRING_LIST_INIT_DUP;
 749         struct branches_for_remote cb_data;
 750         int i, result;
 751
 752         memset(&cb_data, 0, sizeof(cb_data));
 753         cb_data.branches = &branches;
 754         cb_data.skipped = &skipped;
 755         cb_data.keep = &known_remotes;
 756
 757         if (argc != 2)
 758                 usage_with_options(builtin_remote_rm_usage, options);
 759
 760         remote = remote_get(argv[1]);
 761         if (!remote_is_configured(remote, 1))
 762                 die(_("No such remote: %s"), argv[1]);
 763
 764         known_remotes.to_delete = remote;
 765         for_each_remote(add_known_remote, &known_remotes);
 766
 767         read_branches();
 768         for (i = 0; i < branch_list.nr; i++) {
 769                 struct string_list_item *item = branch_list.items + i;
 770                 struct branch_info *info = item->util;
 771                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 772                         const char *keys[] = { "remote", "merge", NULL }, **k;
 773                         for (k = keys; *k; k++) {
 774                                 strbuf_reset(&buf);
 775                                 strbuf_addf(&buf, "branch.%s.%s",
 776                                                 item->string, *k);
 777                                 result = git_config_set_gently(buf.buf, NULL);
 778                                 if (result && result != CONFIG_NOTHING_SET)
 779                                         die(_("could not unset '%s'"), buf.buf);
 780                         }
 781                 }
 782         }
 783
 784         /*
 785          * We cannot just pass a function to for_each_ref() which deletes
 786          * the branches one by one, since for_each_ref() relies on cached
 787          * refs, which are invalidated when deleting a branch.
 788          */
 789         cb_data.remote = remote;
 790         result = for_each_ref(add_branch_for_removal, &cb_data);
 791         strbuf_release(&buf);
 792
 793         if (!result)
 794                 result = delete_refs("remote: remove", &branches, REF_NO_DEREF);
 795         string_list_clear(&branches, 0);
 796
 797         if (skipped.nr) {
 798                 fprintf_ln(stderr,
 799                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 800                               "to delete it, use:",
 801                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 802                               "to delete them, use:",
 803                               skipped.nr));
 804                 for (i = 0; i < skipped.nr; i++)
 805                         fprintf(stderr, "  git branch -d %s\n",
 806                                 skipped.items[i].string);
 807         }
 808         string_list_clear(&skipped, 0);
 809
 810         if (!result) {
 811                 strbuf_addf(&buf, "remote.%s", remote->name);
 812                 if (git_config_rename_section(buf.buf, NULL) < 1)
 813                         return error(_("Could not remove config section '%s'"), buf.buf);
 814         }
 815
 816         return result;
 817 }
 818
 819 static void clear_push_info(void *util, const char *string)
 820 {
 821         struct push_info *info = util;
 822         free(info->dest);
 823         free(info);
 824 }
 825
 826 static void free_remote_ref_states(struct ref_states *states)
 827 {
 828         string_list_clear(&states->new_refs, 0);
 829         string_list_clear(&states->stale, 1);
 830         string_list_clear(&states->tracked, 0);
 831         string_list_clear(&states->heads, 0);
 832         string_list_clear_func(&states->push, clear_push_info);
 833 }
 834
 835 static int append_ref_to_tracked_list(const char *refname,
 836         const struct object_id *oid, int flags, void *cb_data)
 837 {
 838         struct ref_states *states = cb_data;
 839         struct refspec_item refspec;
 840
 841         if (flags & REF_ISSYMREF)
 842                 return 0;
 843
 844         memset(&refspec, 0, sizeof(refspec));
 845         refspec.dst = (char *)refname;
 846         if (!remote_find_tracking(states->remote, &refspec))
 847                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 848
 849         return 0;
 850 }
 851
 852 static int get_remote_ref_states(const char *name,
 853                                  struct ref_states *states,
 854                                  int query)
 855 {
 856         struct transport *transport;
 857         const struct ref *remote_refs;
 858
 859         states->remote = remote_get(name);
 860         if (!states->remote)
 861                 return error(_("No such remote: %s"), name);
 862
 863         read_branches();
 864
 865         if (query) {
 866                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 867                         states->remote->url[0] : NULL);
 868                 remote_refs = transport_get_remote_refs(transport, NULL);
 869                 transport_disconnect(transport);
 870
 871                 states->queried = 1;
 872                 if (query & GET_REF_STATES)
 873                         get_ref_states(remote_refs, states);
 874                 if (query & GET_HEAD_NAMES)
 875                         get_head_names(remote_refs, states);
 876                 if (query & GET_PUSH_REF_STATES)
 877                         get_push_ref_states(remote_refs, states);
 878         } else {
 879                 for_each_ref(append_ref_to_tracked_list, states);
 880                 string_list_sort(&states->tracked);
 881                 get_push_ref_states_noquery(states);
 882         }
 883
 884         return 0;
 885 }
 886
 887 struct show_info {
 888         struct string_list *list;
 889         struct ref_states *states;
 890         int width, width2;
 891         int any_rebase;
 892 };
 893
 894 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 895 {
 896         struct show_info *info = cb_data;
 897         int n = strlen(item->string);
 898         if (n > info->width)
 899                 info->width = n;
 900         string_list_insert(info->list, item->string);
 901         return 0;
 902 }
 903
 904 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 905 {
 906         struct show_info *info = cb_data;
 907         struct ref_states *states = info->states;
 908         const char *name = item->string;
 909
 910         if (states->queried) {
 911                 const char *fmt = "%s";
 912                 const char *arg = "";
 913                 if (string_list_has_string(&states->new_refs, name)) {
 914                         fmt = _(" new (next fetch will store in remotes/%s)");
 915                         arg = states->remote->name;
 916                 } else if (string_list_has_string(&states->tracked, name))
 917                         arg = _(" tracked");
 918                 else if (string_list_has_string(&states->stale, name))
 919                         arg = _(" stale (use 'git remote prune' to remove)");
 920                 else
 921                         arg = _(" ???");
 922                 printf("    %-*s", info->width, name);
 923                 printf(fmt, arg);
 924                 printf("\n");
 925         } else
 926                 printf("    %s\n", name);
 927
 928         return 0;
 929 }
 930
 931 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 932 {
 933         struct show_info *show_info = cb_data;
 934         struct ref_states *states = show_info->states;
 935         struct branch_info *branch_info = branch_item->util;
 936         struct string_list_item *item;
 937         int n;
 938
 939         if (!branch_info->merge.nr || !branch_info->remote_name ||
 940             strcmp(states->remote->name, branch_info->remote_name))
 941                 return 0;
 942         if ((n = strlen(branch_item->string)) > show_info->width)
 943                 show_info->width = n;
 944         if (branch_info->rebase)
 945                 show_info->any_rebase = 1;
 946
 947         item = string_list_insert(show_info->list, branch_item->string);
 948         item->util = branch_info;
 949
 950         return 0;
 951 }
 952
 953 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 954 {
 955         struct show_info *show_info = cb_data;
 956         struct branch_info *branch_info = item->util;
 957         struct string_list *merge = &branch_info->merge;
 958         int width = show_info->width + 4;
 959         int i;
 960
 961         if (branch_info->rebase && branch_info->merge.nr > 1) {
 962                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 963                         item->string);
 964                 return 0;
 965         }
 966
 967         printf("    %-*s ", show_info->width, item->string);
 968         if (branch_info->rebase) {
 969                 const char *msg;
 970                 if (branch_info->rebase == INTERACTIVE_REBASE)
 971                         msg = _("rebases interactively onto remote %s");
 972                 else if (branch_info->rebase == REBASE_MERGES)
 973                         msg = _("rebases interactively (with merges) onto "
 974                                 "remote %s");
 975                 else
 976                         msg = _("rebases onto remote %s");
 977                 printf_ln(msg, merge->items[0].string);
 978                 return 0;
 979         } else if (show_info->any_rebase) {
 980                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 981                 width++;
 982         } else {
 983                 printf_ln(_("merges with remote %s"), merge->items[0].string);
 984         }
 985         for (i = 1; i < merge->nr; i++)
 986                 printf(_("%-*s    and with remote %s\n"), width, "",
 987                        merge->items[i].string);
 988
 989         return 0;
 990 }
 991
 992 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 993 {
 994         struct show_info *show_info = cb_data;
 995         struct push_info *push_info = push_item->util;
 996         struct string_list_item *item;
 997         int n;
 998         if ((n = strlen(push_item->string)) > show_info->width)
 999                 show_info->width = n;
1000         if ((n = strlen(push_info->dest)) > show_info->width2)
1001                 show_info->width2 = n;
1002         item = string_list_append(show_info->list, push_item->string);
1003         item->util = push_item->util;
1004         return 0;
1005 }
1006
1007 /*
1008  * Sorting comparison for a string list that has push_info
1009  * structs in its util field
1010  */
1011 static int cmp_string_with_push(const void *va, const void *vb)
1012 {
1013         const struct string_list_item *a = va;
1014         const struct string_list_item *b = vb;
1015         const struct push_info *a_push = a->util;
1016         const struct push_info *b_push = b->util;
1017         int cmp = strcmp(a->string, b->string);
1018         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1019 }
1020
1021 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1022 {
1023         struct show_info *show_info = cb_data;
1024         struct push_info *push_info = item->util;
1025         const char *src = item->string, *status = NULL;
1026
1027         switch (push_info->status) {
1028         case PUSH_STATUS_CREATE:
1029                 status = _("create");
1030                 break;
1031         case PUSH_STATUS_DELETE:
1032                 status = _("delete");
1033                 src = _("(none)");
1034                 break;
1035         case PUSH_STATUS_UPTODATE:
1036                 status = _("up to date");
1037                 break;
1038         case PUSH_STATUS_FASTFORWARD:
1039                 status = _("fast-forwardable");
1040                 break;
1041         case PUSH_STATUS_OUTOFDATE:
1042                 status = _("local out of date");
1043                 break;
1044         case PUSH_STATUS_NOTQUERIED:
1045                 break;
1046         }
1047         if (status) {
1048                 if (push_info->forced)
1049                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1050                                show_info->width2, push_info->dest, status);
1051                 else
1052                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1053                                show_info->width2, push_info->dest, status);
1054         } else {
1055                 if (push_info->forced)
1056                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1057                                push_info->dest);
1058                 else
1059                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1060                                push_info->dest);
1061         }
1062         return 0;
1063 }
1064
1065 static int get_one_entry(struct remote *remote, void *priv)
1066 {
1067         struct string_list *list = priv;
1068         struct strbuf url_buf = STRBUF_INIT;
1069         const char **url;
1070         int i, url_nr;
1071
1072         if (remote->url_nr > 0) {
1073                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1074                 string_list_append(list, remote->name)->util =
1075                                 strbuf_detach(&url_buf, NULL);
1076         } else
1077                 string_list_append(list, remote->name)->util = NULL;
1078         if (remote->pushurl_nr) {
1079                 url = remote->pushurl;
1080                 url_nr = remote->pushurl_nr;
1081         } else {
1082                 url = remote->url;
1083                 url_nr = remote->url_nr;
1084         }
1085         for (i = 0; i < url_nr; i++)
1086         {
1087                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1088                 string_list_append(list, remote->name)->util =
1089                                 strbuf_detach(&url_buf, NULL);
1090         }
1091
1092         return 0;
1093 }
1094
1095 static int show_all(void)
1096 {
1097         struct string_list list = STRING_LIST_INIT_NODUP;
1098         int result;
1099
1100         list.strdup_strings = 1;
1101         result = for_each_remote(get_one_entry, &list);
1102
1103         if (!result) {
1104                 int i;
1105
1106                 string_list_sort(&list);
1107                 for (i = 0; i < list.nr; i++) {
1108                         struct string_list_item *item = list.items + i;
1109                         if (verbose)
1110                                 printf("%s\t%s\n", item->string,
1111                                         item->util ? (const char *)item->util : "");
1112                         else {
1113                                 if (i && !strcmp((item - 1)->string, item->string))
1114                                         continue;
1115                                 printf("%s\n", item->string);
1116                         }
1117                 }
1118         }
1119         string_list_clear(&list, 1);
1120         return result;
1121 }
1122
1123 static int show(int argc, const char **argv)
1124 {
1125         int no_query = 0, result = 0, query_flag = 0;
1126         struct option options[] = {
1127                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1128                 OPT_END()
1129         };
1130         struct ref_states states;
1131         struct string_list info_list = STRING_LIST_INIT_NODUP;
1132         struct show_info info;
1133
1134         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1135                              0);
1136
1137         if (argc < 1)
1138                 return show_all();
1139
1140         if (!no_query)
1141                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1142
1143         memset(&states, 0, sizeof(states));
1144         memset(&info, 0, sizeof(info));
1145         info.states = &states;
1146         info.list = &info_list;
1147         for (; argc; argc--, argv++) {
1148                 int i;
1149                 const char **url;
1150                 int url_nr;
1151
1152                 get_remote_ref_states(*argv, &states, query_flag);
1153
1154                 printf_ln(_("* remote %s"), *argv);
1155                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1156                        states.remote->url[0] : _("(no URL)"));
1157                 if (states.remote->pushurl_nr) {
1158                         url = states.remote->pushurl;
1159                         url_nr = states.remote->pushurl_nr;
1160                 } else {
1161                         url = states.remote->url;
1162                         url_nr = states.remote->url_nr;
1163                 }
1164                 for (i = 0; i < url_nr; i++)
1165                         /*
1166                          * TRANSLATORS: the colon ':' should align
1167                          * with the one in " Fetch URL: %s"
1168                          * translation.
1169                          */
1170                         printf_ln(_("  Push  URL: %s"), url[i]);
1171                 if (!i)
1172                         printf_ln(_("  Push  URL: %s"), _("(no URL)"));
1173                 if (no_query)
1174                         printf_ln(_("  HEAD branch: %s"), _("(not queried)"));
1175                 else if (!states.heads.nr)
1176                         printf_ln(_("  HEAD branch: %s"), _("(unknown)"));
1177                 else if (states.heads.nr == 1)
1178                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1179                 else {
1180                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1181                                  " may be one of the following):\n"));
1182                         for (i = 0; i < states.heads.nr; i++)
1183                                 printf("    %s\n", states.heads.items[i].string);
1184                 }
1185
1186                 /* remote branch info */
1187                 info.width = 0;
1188                 for_each_string_list(&states.new_refs, add_remote_to_show_info, &info);
1189                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1190                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1191                 if (info.list->nr)
1192                         printf_ln(Q_("  Remote branch:%s",
1193                                      "  Remote branches:%s",
1194                                      info.list->nr),
1195                                   no_query ? _(" (status not queried)") : "");
1196                 for_each_string_list(info.list, show_remote_info_item, &info);
1197                 string_list_clear(info.list, 0);
1198
1199                 /* git pull info */
1200                 info.width = 0;
1201                 info.any_rebase = 0;
1202                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1203                 if (info.list->nr)
1204                         printf_ln(Q_("  Local branch configured for 'git pull':",
1205                                      "  Local branches configured for 'git pull':",
1206                                      info.list->nr));
1207                 for_each_string_list(info.list, show_local_info_item, &info);
1208                 string_list_clear(info.list, 0);
1209
1210                 /* git push info */
1211                 if (states.remote->mirror)
1212                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1213
1214                 info.width = info.width2 = 0;
1215                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1216                 QSORT(info.list->items, info.list->nr, cmp_string_with_push);
1217                 if (info.list->nr)
1218                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1219                                      "  Local refs configured for 'git push'%s:",
1220                                      info.list->nr),
1221                                   no_query ? _(" (status not queried)") : "");
1222                 for_each_string_list(info.list, show_push_info_item, &info);
1223                 string_list_clear(info.list, 0);
1224
1225                 free_remote_ref_states(&states);
1226         }
1227
1228         return result;
1229 }
1230
1231 static int set_head(int argc, const char **argv)
1232 {
1233         int i, opt_a = 0, opt_d = 0, result = 0;
1234         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1235         char *head_name = NULL;
1236
1237         struct option options[] = {
1238                 OPT_BOOL('a', "auto", &opt_a,
1239                          N_("set refs/remotes/<name>/HEAD according to remote")),
1240                 OPT_BOOL('d', "delete", &opt_d,
1241                          N_("delete refs/remotes/<name>/HEAD")),
1242                 OPT_END()
1243         };
1244         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1245                              0);
1246         if (argc)
1247                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1248
1249         if (!opt_a && !opt_d && argc == 2) {
1250                 head_name = xstrdup(argv[1]);
1251         } else if (opt_a && !opt_d && argc == 1) {
1252                 struct ref_states states;
1253                 memset(&states, 0, sizeof(states));
1254                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1255                 if (!states.heads.nr)
1256                         result |= error(_("Cannot determine remote HEAD"));
1257                 else if (states.heads.nr > 1) {
1258                         result |= error(_("Multiple remote HEAD branches. "
1259                                           "Please choose one explicitly with:"));
1260                         for (i = 0; i < states.heads.nr; i++)
1261                                 fprintf(stderr, "  git remote set-head %s %s\n",
1262                                         argv[0], states.heads.items[i].string);
1263                 } else
1264                         head_name = xstrdup(states.heads.items[0].string);
1265                 free_remote_ref_states(&states);
1266         } else if (opt_d && !opt_a && argc == 1) {
1267                 if (delete_ref(NULL, buf.buf, NULL, REF_NO_DEREF))
1268                         result |= error(_("Could not delete %s"), buf.buf);
1269         } else
1270                 usage_with_options(builtin_remote_sethead_usage, options);
1271
1272         if (head_name) {
1273                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1274                 /* make sure it's valid */
1275                 if (!ref_exists(buf2.buf))
1276                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1277                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1278                         result |= error(_("Could not setup %s"), buf.buf);
1279                 if (opt_a)
1280                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1281                 free(head_name);
1282         }
1283
1284         strbuf_release(&buf);
1285         strbuf_release(&buf2);
1286         return result;
1287 }
1288
1289 static int prune_remote(const char *remote, int dry_run)
1290 {
1291         int result = 0;
1292         struct ref_states states;
1293         struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
1294         struct string_list_item *item;
1295         const char *dangling_msg = dry_run
1296                 ? _(" %s will become dangling!")
1297                 : _(" %s has become dangling!");
1298
1299         memset(&states, 0, sizeof(states));
1300         get_remote_ref_states(remote, &states, GET_REF_STATES);
1301
1302         if (!states.stale.nr) {
1303                 free_remote_ref_states(&states);
1304                 return 0;
1305         }
1306
1307         printf_ln(_("Pruning %s"), remote);
1308         printf_ln(_("URL: %s"),
1309                   states.remote->url_nr
1310                   ? states.remote->url[0]
1311                   : _("(no URL)"));
1312
1313         for_each_string_list_item(item, &states.stale)
1314                 string_list_append(&refs_to_prune, item->util);
1315         string_list_sort(&refs_to_prune);
1316
1317         if (!dry_run)
1318                 result |= delete_refs("remote: prune", &refs_to_prune, 0);
1319
1320         for_each_string_list_item(item, &states.stale) {
1321                 const char *refname = item->util;
1322
1323                 if (dry_run)
1324                         printf_ln(_(" * [would prune] %s"),
1325                                abbrev_ref(refname, "refs/remotes/"));
1326                 else
1327                         printf_ln(_(" * [pruned] %s"),
1328                                abbrev_ref(refname, "refs/remotes/"));
1329         }
1330
1331         warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);
1332
1333         string_list_clear(&refs_to_prune, 0);
1334         free_remote_ref_states(&states);
1335         return result;
1336 }
1337
1338 static int prune(int argc, const char **argv)
1339 {
1340         int dry_run = 0, result = 0;
1341         struct option options[] = {
1342                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1343                 OPT_END()
1344         };
1345
1346         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1347                              0);
1348
1349         if (argc < 1)
1350                 usage_with_options(builtin_remote_prune_usage, options);
1351
1352         for (; argc; argc--, argv++)
1353                 result |= prune_remote(*argv, dry_run);
1354
1355         return result;
1356 }
1357
1358 static int get_remote_default(const char *key, const char *value, void *priv)
1359 {
1360         if (strcmp(key, "remotes.default") == 0) {
1361                 int *found = priv;
1362                 *found = 1;
1363         }
1364         return 0;
1365 }
1366
1367 static int update(int argc, const char **argv)
1368 {
1369         int i, prune = -1;
1370         struct option options[] = {
1371                 OPT_BOOL('p', "prune", &prune,
1372                          N_("prune remotes after fetching")),
1373                 OPT_END()
1374         };
1375         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1376         int default_defined = 0;
1377         int retval;
1378
1379         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1380                              PARSE_OPT_KEEP_ARGV0);
1381
1382         argv_array_push(&fetch_argv, "fetch");
1383
1384         if (prune != -1)
1385                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1386         if (verbose)
1387                 argv_array_push(&fetch_argv, "-v");
1388         argv_array_push(&fetch_argv, "--multiple");
1389         if (argc < 2)
1390                 argv_array_push(&fetch_argv, "default");
1391         for (i = 1; i < argc; i++)
1392                 argv_array_push(&fetch_argv, argv[i]);
1393
1394         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1395                 git_config(get_remote_default, &default_defined);
1396                 if (!default_defined) {
1397                         argv_array_pop(&fetch_argv);
1398                         argv_array_push(&fetch_argv, "--all");
1399                 }
1400         }
1401
1402         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1403         argv_array_clear(&fetch_argv);
1404         return retval;
1405 }
1406
1407 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1408 {
1409         return git_config_set_multivar_gently(key, NULL, NULL, 1);
1410 }
1411
1412 static void add_branches(struct remote *remote, const char **branches,
1413                          const char *key)
1414 {
1415         const char *remotename = remote->name;
1416         int mirror = remote->mirror;
1417         struct strbuf refspec = STRBUF_INIT;
1418
1419         for (; *branches; branches++)
1420                 add_branch(key, *branches, remotename, mirror, &refspec);
1421
1422         strbuf_release(&refspec);
1423 }
1424
1425 static int set_remote_branches(const char *remotename, const char **branches,
1426                                 int add_mode)
1427 {
1428         struct strbuf key = STRBUF_INIT;
1429         struct remote *remote;
1430
1431         strbuf_addf(&key, "remote.%s.fetch", remotename);
1432
1433         remote = remote_get(remotename);
1434         if (!remote_is_configured(remote, 1))
1435                 die(_("No such remote '%s'"), remotename);
1436
1437         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1438                 strbuf_release(&key);
1439                 return 1;
1440         }
1441         add_branches(remote, branches, key.buf);
1442
1443         strbuf_release(&key);
1444         return 0;
1445 }
1446
1447 static int set_branches(int argc, const char **argv)
1448 {
1449         int add_mode = 0;
1450         struct option options[] = {
1451                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1452                 OPT_END()
1453         };
1454
1455         argc = parse_options(argc, argv, NULL, options,
1456                              builtin_remote_setbranches_usage, 0);
1457         if (argc == 0) {
1458                 error(_("no remote specified"));
1459                 usage_with_options(builtin_remote_setbranches_usage, options);
1460         }
1461         argv[argc] = NULL;
1462
1463         return set_remote_branches(argv[0], argv + 1, add_mode);
1464 }
1465
1466 static int get_url(int argc, const char **argv)
1467 {
1468         int i, push_mode = 0, all_mode = 0;
1469         const char *remotename = NULL;
1470         struct remote *remote;
1471         const char **url;
1472         int url_nr;
1473         struct option options[] = {
1474                 OPT_BOOL('\0', "push", &push_mode,
1475                          N_("query push URLs rather than fetch URLs")),
1476                 OPT_BOOL('\0', "all", &all_mode,
1477                          N_("return all URLs")),
1478                 OPT_END()
1479         };
1480         argc = parse_options(argc, argv, NULL, options, builtin_remote_geturl_usage, 0);
1481
1482         if (argc != 1)
1483                 usage_with_options(builtin_remote_geturl_usage, options);
1484
1485         remotename = argv[0];
1486
1487         remote = remote_get(remotename);
1488         if (!remote_is_configured(remote, 1))
1489                 die(_("No such remote '%s'"), remotename);
1490
1491         url_nr = 0;
1492         if (push_mode) {
1493                 url = remote->pushurl;
1494                 url_nr = remote->pushurl_nr;
1495         }
1496         /* else fetch mode */
1497
1498         /* Use the fetch URL when no push URLs were found or requested. */
1499         if (!url_nr) {
1500                 url = remote->url;
1501                 url_nr = remote->url_nr;
1502         }
1503
1504         if (!url_nr)
1505                 die(_("no URLs configured for remote '%s'"), remotename);
1506
1507         if (all_mode) {
1508                 for (i = 0; i < url_nr; i++)
1509                         printf_ln("%s", url[i]);
1510         } else {
1511                 printf_ln("%s", *url);
1512         }
1513
1514         return 0;
1515 }
1516
1517 static int set_url(int argc, const char **argv)
1518 {
1519         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1520         int matches = 0, negative_matches = 0;
1521         const char *remotename = NULL;
1522         const char *newurl = NULL;
1523         const char *oldurl = NULL;
1524         struct remote *remote;
1525         regex_t old_regex;
1526         const char **urlset;
1527         int urlset_nr;
1528         struct strbuf name_buf = STRBUF_INIT;
1529         struct option options[] = {
1530                 OPT_BOOL('\0', "push", &push_mode,
1531                          N_("manipulate push URLs")),
1532                 OPT_BOOL('\0', "add", &add_mode,
1533                          N_("add URL")),
1534                 OPT_BOOL('\0', "delete", &delete_mode,
1535                             N_("delete URLs")),
1536                 OPT_END()
1537         };
1538         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1539                              PARSE_OPT_KEEP_ARGV0);
1540
1541         if (add_mode && delete_mode)
1542                 die(_("--add --delete doesn't make sense"));
1543
1544         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1545                 usage_with_options(builtin_remote_seturl_usage, options);
1546
1547         remotename = argv[1];
1548         newurl = argv[2];
1549         if (argc > 3)
1550                 oldurl = argv[3];
1551
1552         if (delete_mode)
1553                 oldurl = newurl;
1554
1555         remote = remote_get(remotename);
1556         if (!remote_is_configured(remote, 1))
1557                 die(_("No such remote '%s'"), remotename);
1558
1559         if (push_mode) {
1560                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1561                 urlset = remote->pushurl;
1562                 urlset_nr = remote->pushurl_nr;
1563         } else {
1564                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1565                 urlset = remote->url;
1566                 urlset_nr = remote->url_nr;
1567         }
1568
1569         /* Special cases that add new entry. */
1570         if ((!oldurl && !delete_mode) || add_mode) {
1571                 if (add_mode)
1572                         git_config_set_multivar(name_buf.buf, newurl,
1573                                                        "^$", 0);
1574                 else
1575                         git_config_set(name_buf.buf, newurl);
1576                 goto out;
1577         }
1578
1579         /* Old URL specified. Demand that one matches. */
1580         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1581                 die(_("Invalid old URL pattern: %s"), oldurl);
1582
1583         for (i = 0; i < urlset_nr; i++)
1584                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1585                         matches++;
1586                 else
1587                         negative_matches++;
1588         if (!delete_mode && !matches)
1589                 die(_("No such URL found: %s"), oldurl);
1590         if (delete_mode && !negative_matches && !push_mode)
1591                 die(_("Will not delete all non-push URLs"));
1592
1593         regfree(&old_regex);
1594
1595         if (!delete_mode)
1596                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1597         else
1598                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1599 out:
1600         strbuf_release(&name_buf);
1601         return 0;
1602 }
1603
1604 int cmd_remote(int argc, const char **argv, const char *prefix)
1605 {
1606         struct option options[] = {
1607                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1608                 OPT_END()
1609         };
1610         int result;
1611
1612         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1613                 PARSE_OPT_STOP_AT_NON_OPTION);
1614
1615         if (argc < 1)
1616                 result = show_all();
1617         else if (!strcmp(argv[0], "add"))
1618                 result = add(argc, argv);
1619         else if (!strcmp(argv[0], "rename"))
1620                 result = mv(argc, argv);
1621         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1622                 result = rm(argc, argv);
1623         else if (!strcmp(argv[0], "set-head"))
1624                 result = set_head(argc, argv);
1625         else if (!strcmp(argv[0], "set-branches"))
1626                 result = set_branches(argc, argv);
1627         else if (!strcmp(argv[0], "get-url"))
1628                 result = get_url(argc, argv);
1629         else if (!strcmp(argv[0], "set-url"))
1630                 result = set_url(argc, argv);
1631         else if (!strcmp(argv[0], "show"))
1632                 result = show(argc, argv);
1633         else if (!strcmp(argv[0], "prune"))
1634                 result = prune(argc, argv);
1635         else if (!strcmp(argv[0], "update"))
1636                 result = update(argc, argv);
1637         else {
1638                 error(_("Unknown subcommand: %s"), argv[0]);
1639                 usage_with_options(builtin_remote_usage, options);
1640         }
1641
1642         return result ? 1 : 0;
1643 }