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
  10 static const char * const builtin_remote_usage[] = {
  11         "git remote [-v | --verbose]",
  12         "git remote add [-t <branch>] [-m <master>] [-f] [--tags|--no-tags] [--mirror=<fetch|push>] <name> <url>",
  13         "git remote rename <old> <new>",
  14         "git remote remove <name>",
  15         "git remote set-head <name> (-a | -d | <branch>)",
  16         "git remote [-v | --verbose] show [-n] <name>",
  17         "git remote prune [-n | --dry-run] <name>",
  18         "git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]",
  19         "git remote set-branches [--add] <name> <branch>...",
  20         "git remote set-url [--push] <name> <newurl> [<oldurl>]",
  21         "git remote set-url --add <name> <newurl>",
  22         "git remote set-url --delete <name> <url>",
  23         NULL
  24 };
  25
  26 static const char * const builtin_remote_add_usage[] = {
  27         "git remote add [<options>] <name> <url>",
  28         NULL
  29 };
  30
  31 static const char * const builtin_remote_rename_usage[] = {
  32         "git remote rename <old> <new>",
  33         NULL
  34 };
  35
  36 static const char * const builtin_remote_rm_usage[] = {
  37         "git remote remove <name>",
  38         NULL
  39 };
  40
  41 static const char * const builtin_remote_sethead_usage[] = {
  42         "git remote set-head <name> (-a | -d | <branch>])",
  43         NULL
  44 };
  45
  46 static const char * const builtin_remote_setbranches_usage[] = {
  47         "git remote set-branches <name> <branch>...",
  48         "git remote set-branches --add <name> <branch>...",
  49         NULL
  50 };
  51
  52 static const char * const builtin_remote_show_usage[] = {
  53         "git remote show [<options>] <name>",
  54         NULL
  55 };
  56
  57 static const char * const builtin_remote_prune_usage[] = {
  58         "git remote prune [<options>] <name>",
  59         NULL
  60 };
  61
  62 static const char * const builtin_remote_update_usage[] = {
  63         "git remote update [<options>] [<group> | <remote>]...",
  64         NULL
  65 };
  66
  67 static const char * const builtin_remote_seturl_usage[] = {
  68         "git remote set-url [--push] <name> <newurl> [<oldurl>]",
  69         "git remote set-url --add <name> <newurl>",
  70         "git remote set-url --delete <name> <url>",
  71         NULL
  72 };
  73
  74 #define GET_REF_STATES (1<<0)
  75 #define GET_HEAD_NAMES (1<<1)
  76 #define GET_PUSH_REF_STATES (1<<2)
  77
  78 static int verbose;
  79
  80 static int show_all(void);
  81 static int prune_remote(const char *remote, int dry_run);
  82
  83 static inline int postfixcmp(const char *string, const char *postfix)
  84 {
  85         int len1 = strlen(string), len2 = strlen(postfix);
  86         if (len1 < len2)
  87                 return 1;
  88         return strcmp(string + len1 - len2, postfix);
  89 }
  90
  91 static int fetch_remote(const char *name)
  92 {
  93         const char *argv[] = { "fetch", name, NULL, NULL };
  94         if (verbose) {
  95                 argv[1] = "-v";
  96                 argv[2] = name;
  97         }
  98         printf_ln(_("Updating %s"), name);
  99         if (run_command_v_opt(argv, RUN_GIT_CMD))
 100                 return error(_("Could not fetch %s"), name);
 101         return 0;
 102 }
 103
 104 enum {
 105         TAGS_UNSET = 0,
 106         TAGS_DEFAULT = 1,
 107         TAGS_SET = 2
 108 };
 109
 110 #define MIRROR_NONE 0
 111 #define MIRROR_FETCH 1
 112 #define MIRROR_PUSH 2
 113 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 114
 115 static int add_branch(const char *key, const char *branchname,
 116                 const char *remotename, int mirror, struct strbuf *tmp)
 117 {
 118         strbuf_reset(tmp);
 119         strbuf_addch(tmp, '+');
 120         if (mirror)
 121                 strbuf_addf(tmp, "refs/%s:refs/%s",
 122                                 branchname, branchname);
 123         else
 124                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 125                                 branchname, remotename, branchname);
 126         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 127 }
 128
 129 static const char mirror_advice[] =
 130 N_("--mirror is dangerous and deprecated; please\n"
 131    "\t use --mirror=fetch or --mirror=push instead");
 132
 133 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 134 {
 135         unsigned *mirror = opt->value;
 136         if (not)
 137                 *mirror = MIRROR_NONE;
 138         else if (!arg) {
 139                 warning("%s", _(mirror_advice));
 140                 *mirror = MIRROR_BOTH;
 141         }
 142         else if (!strcmp(arg, "fetch"))
 143                 *mirror = MIRROR_FETCH;
 144         else if (!strcmp(arg, "push"))
 145                 *mirror = MIRROR_PUSH;
 146         else
 147                 return error(_("unknown mirror argument: %s"), arg);
 148         return 0;
 149 }
 150
 151 static int add(int argc, const char **argv)
 152 {
 153         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 154         unsigned mirror = MIRROR_NONE;
 155         struct string_list track = STRING_LIST_INIT_NODUP;
 156         const char *master = NULL;
 157         struct remote *remote;
 158         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 159         const char *name, *url;
 160         int i;
 161
 162         struct option options[] = {
 163                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
 164                 OPT_SET_INT(0, "tags", &fetch_tags,
 165                             "import all tags and associated objects when fetching",
 166                             TAGS_SET),
 167                 OPT_SET_INT(0, NULL, &fetch_tags,
 168                             "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
 169                 OPT_STRING_LIST('t', "track", &track, "branch",
 170                                 "branch(es) to track"),
 171                 OPT_STRING('m', "master", &master, "branch", "master branch"),
 172                 { OPTION_CALLBACK, 0, "mirror", &mirror, "push|fetch",
 173                         "set up remote as a mirror to push to or fetch from",
 174                         PARSE_OPT_OPTARG, parse_mirror_opt },
 175                 OPT_END()
 176         };
 177
 178         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 179                              0);
 180
 181         if (argc < 2)
 182                 usage_with_options(builtin_remote_add_usage, options);
 183
 184         if (mirror && master)
 185                 die(_("specifying a master branch makes no sense with --mirror"));
 186         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 187                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 188
 189         name = argv[0];
 190         url = argv[1];
 191
 192         remote = remote_get(name);
 193         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 194                         remote->fetch_refspec_nr))
 195                 die(_("remote %s already exists."), name);
 196
 197         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 198         if (!valid_fetch_refspec(buf2.buf))
 199                 die(_("'%s' is not a valid remote name"), name);
 200
 201         strbuf_addf(&buf, "remote.%s.url", name);
 202         if (git_config_set(buf.buf, url))
 203                 return 1;
 204
 205         if (!mirror || mirror & MIRROR_FETCH) {
 206                 strbuf_reset(&buf);
 207                 strbuf_addf(&buf, "remote.%s.fetch", name);
 208                 if (track.nr == 0)
 209                         string_list_append(&track, "*");
 210                 for (i = 0; i < track.nr; i++) {
 211                         if (add_branch(buf.buf, track.items[i].string,
 212                                        name, mirror, &buf2))
 213                                 return 1;
 214                 }
 215         }
 216
 217         if (mirror & MIRROR_PUSH) {
 218                 strbuf_reset(&buf);
 219                 strbuf_addf(&buf, "remote.%s.mirror", name);
 220                 if (git_config_set(buf.buf, "true"))
 221                         return 1;
 222         }
 223
 224         if (fetch_tags != TAGS_DEFAULT) {
 225                 strbuf_reset(&buf);
 226                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 227                 if (git_config_set(buf.buf,
 228                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 229                         return 1;
 230         }
 231
 232         if (fetch && fetch_remote(name))
 233                 return 1;
 234
 235         if (master) {
 236                 strbuf_reset(&buf);
 237                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 238
 239                 strbuf_reset(&buf2);
 240                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 241
 242                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 243                         return error(_("Could not setup master '%s'"), master);
 244         }
 245
 246         strbuf_release(&buf);
 247         strbuf_release(&buf2);
 248         string_list_clear(&track, 0);
 249
 250         return 0;
 251 }
 252
 253 struct branch_info {
 254         char *remote_name;
 255         struct string_list merge;
 256         int rebase;
 257 };
 258
 259 static struct string_list branch_list;
 260
 261 static const char *abbrev_ref(const char *name, const char *prefix)
 262 {
 263         const char *abbrev = skip_prefix(name, prefix);
 264         if (abbrev)
 265                 return abbrev;
 266         return name;
 267 }
 268 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 269
 270 static int config_read_branches(const char *key, const char *value, void *cb)
 271 {
 272         if (!prefixcmp(key, "branch.")) {
 273                 const char *orig_key = key;
 274                 char *name;
 275                 struct string_list_item *item;
 276                 struct branch_info *info;
 277                 enum { REMOTE, MERGE, REBASE } type;
 278
 279                 key += 7;
 280                 if (!postfixcmp(key, ".remote")) {
 281                         name = xstrndup(key, strlen(key) - 7);
 282                         type = REMOTE;
 283                 } else if (!postfixcmp(key, ".merge")) {
 284                         name = xstrndup(key, strlen(key) - 6);
 285                         type = MERGE;
 286                 } else if (!postfixcmp(key, ".rebase")) {
 287                         name = xstrndup(key, strlen(key) - 7);
 288                         type = REBASE;
 289                 } else
 290                         return 0;
 291
 292                 item = string_list_insert(&branch_list, name);
 293
 294                 if (!item->util)
 295                         item->util = xcalloc(sizeof(struct branch_info), 1);
 296                 info = item->util;
 297                 if (type == REMOTE) {
 298                         if (info->remote_name)
 299                                 warning(_("more than one %s"), orig_key);
 300                         info->remote_name = xstrdup(value);
 301                 } else if (type == MERGE) {
 302                         char *space = strchr(value, ' ');
 303                         value = abbrev_branch(value);
 304                         while (space) {
 305                                 char *merge;
 306                                 merge = xstrndup(value, space - value);
 307                                 string_list_append(&info->merge, merge);
 308                                 value = abbrev_branch(space + 1);
 309                                 space = strchr(value, ' ');
 310                         }
 311                         string_list_append(&info->merge, xstrdup(value));
 312                 } else
 313                         info->rebase = git_config_bool(orig_key, value);
 314         }
 315         return 0;
 316 }
 317
 318 static void read_branches(void)
 319 {
 320         if (branch_list.nr)
 321                 return;
 322         git_config(config_read_branches, NULL);
 323 }
 324
 325 struct ref_states {
 326         struct remote *remote;
 327         struct string_list new, stale, tracked, heads, push;
 328         int queried;
 329 };
 330
 331 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 332 {
 333         struct ref *fetch_map = NULL, **tail = &fetch_map;
 334         struct ref *ref, *stale_refs;
 335         int i;
 336
 337         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 338                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 339                         die(_("Could not get fetch map for refspec %s"),
 340                                 states->remote->fetch_refspec[i]);
 341
 342         states->new.strdup_strings = 1;
 343         states->tracked.strdup_strings = 1;
 344         states->stale.strdup_strings = 1;
 345         for (ref = fetch_map; ref; ref = ref->next) {
 346                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 347                         string_list_append(&states->new, abbrev_branch(ref->name));
 348                 else
 349                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 350         }
 351         stale_refs = get_stale_heads(states->remote->fetch,
 352                                      states->remote->fetch_refspec_nr, fetch_map);
 353         for (ref = stale_refs; ref; ref = ref->next) {
 354                 struct string_list_item *item =
 355                         string_list_append(&states->stale, abbrev_branch(ref->name));
 356                 item->util = xstrdup(ref->name);
 357         }
 358         free_refs(stale_refs);
 359         free_refs(fetch_map);
 360
 361         sort_string_list(&states->new);
 362         sort_string_list(&states->tracked);
 363         sort_string_list(&states->stale);
 364
 365         return 0;
 366 }
 367
 368 struct push_info {
 369         char *dest;
 370         int forced;
 371         enum {
 372                 PUSH_STATUS_CREATE = 0,
 373                 PUSH_STATUS_DELETE,
 374                 PUSH_STATUS_UPTODATE,
 375                 PUSH_STATUS_FASTFORWARD,
 376                 PUSH_STATUS_OUTOFDATE,
 377                 PUSH_STATUS_NOTQUERIED
 378         } status;
 379 };
 380
 381 static int get_push_ref_states(const struct ref *remote_refs,
 382         struct ref_states *states)
 383 {
 384         struct remote *remote = states->remote;
 385         struct ref *ref, *local_refs, *push_map;
 386         if (remote->mirror)
 387                 return 0;
 388
 389         local_refs = get_local_heads();
 390         push_map = copy_ref_list(remote_refs);
 391
 392         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 393                         remote->push_refspec, MATCH_REFS_NONE);
 394
 395         states->push.strdup_strings = 1;
 396         for (ref = push_map; ref; ref = ref->next) {
 397                 struct string_list_item *item;
 398                 struct push_info *info;
 399
 400                 if (!ref->peer_ref)
 401                         continue;
 402                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 403
 404                 item = string_list_append(&states->push,
 405                                           abbrev_branch(ref->peer_ref->name));
 406                 item->util = xcalloc(sizeof(struct push_info), 1);
 407                 info = item->util;
 408                 info->forced = ref->force;
 409                 info->dest = xstrdup(abbrev_branch(ref->name));
 410
 411                 if (is_null_sha1(ref->new_sha1)) {
 412                         info->status = PUSH_STATUS_DELETE;
 413                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 414                         info->status = PUSH_STATUS_UPTODATE;
 415                 else if (is_null_sha1(ref->old_sha1))
 416                         info->status = PUSH_STATUS_CREATE;
 417                 else if (has_sha1_file(ref->old_sha1) &&
 418                          ref_newer(ref->new_sha1, ref->old_sha1))
 419                         info->status = PUSH_STATUS_FASTFORWARD;
 420                 else
 421                         info->status = PUSH_STATUS_OUTOFDATE;
 422         }
 423         free_refs(local_refs);
 424         free_refs(push_map);
 425         return 0;
 426 }
 427
 428 static int get_push_ref_states_noquery(struct ref_states *states)
 429 {
 430         int i;
 431         struct remote *remote = states->remote;
 432         struct string_list_item *item;
 433         struct push_info *info;
 434
 435         if (remote->mirror)
 436                 return 0;
 437
 438         states->push.strdup_strings = 1;
 439         if (!remote->push_refspec_nr) {
 440                 item = string_list_append(&states->push, _("(matching)"));
 441                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 442                 info->status = PUSH_STATUS_NOTQUERIED;
 443                 info->dest = xstrdup(item->string);
 444         }
 445         for (i = 0; i < remote->push_refspec_nr; i++) {
 446                 struct refspec *spec = remote->push + i;
 447                 if (spec->matching)
 448                         item = string_list_append(&states->push, _("(matching)"));
 449                 else if (strlen(spec->src))
 450                         item = string_list_append(&states->push, spec->src);
 451                 else
 452                         item = string_list_append(&states->push, _("(delete)"));
 453
 454                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 455                 info->forced = spec->force;
 456                 info->status = PUSH_STATUS_NOTQUERIED;
 457                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 458         }
 459         return 0;
 460 }
 461
 462 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 463 {
 464         struct ref *ref, *matches;
 465         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 466         struct refspec refspec;
 467
 468         refspec.force = 0;
 469         refspec.pattern = 1;
 470         refspec.src = refspec.dst = "refs/heads/*";
 471         states->heads.strdup_strings = 1;
 472         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 473         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 474                                     fetch_map, 1);
 475         for (ref = matches; ref; ref = ref->next)
 476                 string_list_append(&states->heads, abbrev_branch(ref->name));
 477
 478         free_refs(fetch_map);
 479         free_refs(matches);
 480
 481         return 0;
 482 }
 483
 484 struct known_remote {
 485         struct known_remote *next;
 486         struct remote *remote;
 487 };
 488
 489 struct known_remotes {
 490         struct remote *to_delete;
 491         struct known_remote *list;
 492 };
 493
 494 static int add_known_remote(struct remote *remote, void *cb_data)
 495 {
 496         struct known_remotes *all = cb_data;
 497         struct known_remote *r;
 498
 499         if (!strcmp(all->to_delete->name, remote->name))
 500                 return 0;
 501
 502         r = xmalloc(sizeof(*r));
 503         r->remote = remote;
 504         r->next = all->list;
 505         all->list = r;
 506         return 0;
 507 }
 508
 509 struct branches_for_remote {
 510         struct remote *remote;
 511         struct string_list *branches, *skipped;
 512         struct known_remotes *keep;
 513 };
 514
 515 static int add_branch_for_removal(const char *refname,
 516         const unsigned char *sha1, int flags, void *cb_data)
 517 {
 518         struct branches_for_remote *branches = cb_data;
 519         struct refspec refspec;
 520         struct string_list_item *item;
 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 (prefixcmp(refname, "refs/remotes/")) {
 538                 /* advise user how to delete local branches */
 539                 if (!prefixcmp(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         /* make sure that symrefs are deleted */
 547         if (flags & REF_ISSYMREF)
 548                 return unlink(git_path("%s", refname));
 549
 550         item = string_list_append(branches->branches, refname);
 551         item->util = xmalloc(20);
 552         hashcpy(item->util, sha1);
 553
 554         return 0;
 555 }
 556
 557 struct rename_info {
 558         const char *old;
 559         const char *new;
 560         struct string_list *remote_branches;
 561 };
 562
 563 static int read_remote_branches(const char *refname,
 564         const unsigned char *sha1, int flags, void *cb_data)
 565 {
 566         struct rename_info *rename = cb_data;
 567         struct strbuf buf = STRBUF_INIT;
 568         struct string_list_item *item;
 569         int flag;
 570         unsigned char orig_sha1[20];
 571         const char *symref;
 572
 573         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 574         if (!prefixcmp(refname, buf.buf)) {
 575                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 576                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &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         char *path = NULL;
 591
 592         strbuf_addf(&buf, "remote.%s.url", remote->name);
 593         for (i = 0; i < remote->url_nr; i++)
 594                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 595                         return error(_("Could not append '%s' to '%s'"),
 596                                         remote->url[i], buf.buf);
 597         strbuf_reset(&buf);
 598         strbuf_addf(&buf, "remote.%s.push", remote->name);
 599         for (i = 0; i < remote->push_refspec_nr; i++)
 600                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 601                         return error(_("Could not append '%s' to '%s'"),
 602                                         remote->push_refspec[i], buf.buf);
 603         strbuf_reset(&buf);
 604         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 605         for (i = 0; i < remote->fetch_refspec_nr; i++)
 606                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 607                         return error(_("Could not append '%s' to '%s'"),
 608                                         remote->fetch_refspec[i], buf.buf);
 609         if (remote->origin == REMOTE_REMOTES)
 610                 path = git_path("remotes/%s", remote->name);
 611         else if (remote->origin == REMOTE_BRANCHES)
 612                 path = git_path("branches/%s", remote->name);
 613         if (path)
 614                 unlink_or_warn(path);
 615         return 0;
 616 }
 617
 618 static int mv(int argc, const char **argv)
 619 {
 620         struct option options[] = {
 621                 OPT_END()
 622         };
 623         struct remote *oldremote, *newremote;
 624         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 625                 old_remote_context = STRBUF_INIT;
 626         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 627         struct rename_info rename;
 628         int i, refspec_updated = 0;
 629
 630         if (argc != 3)
 631                 usage_with_options(builtin_remote_rename_usage, options);
 632
 633         rename.old = argv[1];
 634         rename.new = argv[2];
 635         rename.remote_branches = &remote_branches;
 636
 637         oldremote = remote_get(rename.old);
 638         if (!oldremote)
 639                 die(_("No such remote: %s"), rename.old);
 640
 641         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 642                 return migrate_file(oldremote);
 643
 644         newremote = remote_get(rename.new);
 645         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 646                 die(_("remote %s already exists."), rename.new);
 647
 648         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 649         if (!valid_fetch_refspec(buf.buf))
 650                 die(_("'%s' is not a valid remote name"), rename.new);
 651
 652         strbuf_reset(&buf);
 653         strbuf_addf(&buf, "remote.%s", rename.old);
 654         strbuf_addf(&buf2, "remote.%s", rename.new);
 655         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 656                 return error(_("Could not rename config section '%s' to '%s'"),
 657                                 buf.buf, buf2.buf);
 658
 659         strbuf_reset(&buf);
 660         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 661         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 662                 return error(_("Could not remove config section '%s'"), buf.buf);
 663         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 664         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 665                 char *ptr;
 666
 667                 strbuf_reset(&buf2);
 668                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 669                 ptr = strstr(buf2.buf, old_remote_context.buf);
 670                 if (ptr) {
 671                         refspec_updated = 1;
 672                         strbuf_splice(&buf2,
 673                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 674                                       strlen(rename.old), rename.new,
 675                                       strlen(rename.new));
 676                 } else
 677                         warning(_("Not updating non-default fetch refspec\n"
 678                                   "\t%s\n"
 679                                   "\tPlease update the configuration manually if necessary."),
 680                                 buf2.buf);
 681
 682                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 683                         return error(_("Could not append '%s'"), buf.buf);
 684         }
 685
 686         read_branches();
 687         for (i = 0; i < branch_list.nr; i++) {
 688                 struct string_list_item *item = branch_list.items + i;
 689                 struct branch_info *info = item->util;
 690                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 691                         strbuf_reset(&buf);
 692                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 693                         if (git_config_set(buf.buf, rename.new)) {
 694                                 return error(_("Could not set '%s'"), buf.buf);
 695                         }
 696                 }
 697         }
 698
 699         if (!refspec_updated)
 700                 return 0;
 701
 702         /*
 703          * First remove symrefs, then rename the rest, finally create
 704          * the new symrefs.
 705          */
 706         for_each_ref(read_remote_branches, &rename);
 707         for (i = 0; i < remote_branches.nr; i++) {
 708                 struct string_list_item *item = remote_branches.items + i;
 709                 int flag = 0;
 710                 unsigned char sha1[20];
 711
 712                 read_ref_full(item->string, sha1, 1, &flag);
 713                 if (!(flag & REF_ISSYMREF))
 714                         continue;
 715                 if (delete_ref(item->string, NULL, REF_NODEREF))
 716                         die(_("deleting '%s' failed"), item->string);
 717         }
 718         for (i = 0; i < remote_branches.nr; i++) {
 719                 struct string_list_item *item = remote_branches.items + i;
 720
 721                 if (item->util)
 722                         continue;
 723                 strbuf_reset(&buf);
 724                 strbuf_addstr(&buf, item->string);
 725                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 726                                 rename.new, strlen(rename.new));
 727                 strbuf_reset(&buf2);
 728                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 729                                 item->string, buf.buf);
 730                 if (rename_ref(item->string, buf.buf, buf2.buf))
 731                         die(_("renaming '%s' failed"), item->string);
 732         }
 733         for (i = 0; i < remote_branches.nr; i++) {
 734                 struct string_list_item *item = remote_branches.items + i;
 735
 736                 if (!item->util)
 737                         continue;
 738                 strbuf_reset(&buf);
 739                 strbuf_addstr(&buf, item->string);
 740                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 741                                 rename.new, strlen(rename.new));
 742                 strbuf_reset(&buf2);
 743                 strbuf_addstr(&buf2, item->util);
 744                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 745                                 rename.new, strlen(rename.new));
 746                 strbuf_reset(&buf3);
 747                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 748                                 item->string, buf.buf);
 749                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 750                         die(_("creating '%s' failed"), buf.buf);
 751         }
 752         return 0;
 753 }
 754
 755 static int remove_branches(struct string_list *branches)
 756 {
 757         int i, result = 0;
 758         for (i = 0; i < branches->nr; i++) {
 759                 struct string_list_item *item = branches->items + i;
 760                 const char *refname = item->string;
 761                 unsigned char *sha1 = item->util;
 762
 763                 if (delete_ref(refname, sha1, 0))
 764                         result |= error(_("Could not remove branch %s"), refname);
 765         }
 766         return result;
 767 }
 768
 769 static int rm(int argc, const char **argv)
 770 {
 771         struct option options[] = {
 772                 OPT_END()
 773         };
 774         struct remote *remote;
 775         struct strbuf buf = STRBUF_INIT;
 776         struct known_remotes known_remotes = { NULL, NULL };
 777         struct string_list branches = STRING_LIST_INIT_DUP;
 778         struct string_list skipped = STRING_LIST_INIT_DUP;
 779         struct branches_for_remote cb_data;
 780         int i, result;
 781
 782         memset(&cb_data, 0, sizeof(cb_data));
 783         cb_data.branches = &branches;
 784         cb_data.skipped = &skipped;
 785         cb_data.keep = &known_remotes;
 786
 787         if (argc != 2)
 788                 usage_with_options(builtin_remote_rm_usage, options);
 789
 790         remote = remote_get(argv[1]);
 791         if (!remote)
 792                 die(_("No such remote: %s"), argv[1]);
 793
 794         known_remotes.to_delete = remote;
 795         for_each_remote(add_known_remote, &known_remotes);
 796
 797         strbuf_addf(&buf, "remote.%s", remote->name);
 798         if (git_config_rename_section(buf.buf, NULL) < 1)
 799                 return error(_("Could not remove config section '%s'"), buf.buf);
 800
 801         read_branches();
 802         for (i = 0; i < branch_list.nr; i++) {
 803                 struct string_list_item *item = branch_list.items + i;
 804                 struct branch_info *info = item->util;
 805                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 806                         const char *keys[] = { "remote", "merge", NULL }, **k;
 807                         for (k = keys; *k; k++) {
 808                                 strbuf_reset(&buf);
 809                                 strbuf_addf(&buf, "branch.%s.%s",
 810                                                 item->string, *k);
 811                                 if (git_config_set(buf.buf, NULL)) {
 812                                         strbuf_release(&buf);
 813                                         return -1;
 814                                 }
 815                         }
 816                 }
 817         }
 818
 819         /*
 820          * We cannot just pass a function to for_each_ref() which deletes
 821          * the branches one by one, since for_each_ref() relies on cached
 822          * refs, which are invalidated when deleting a branch.
 823          */
 824         cb_data.remote = remote;
 825         result = for_each_ref(add_branch_for_removal, &cb_data);
 826         strbuf_release(&buf);
 827
 828         if (!result)
 829                 result = remove_branches(&branches);
 830         string_list_clear(&branches, 1);
 831
 832         if (skipped.nr) {
 833                 fprintf_ln(stderr,
 834                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 835                               "to delete it, use:",
 836                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 837                               "to delete them, use:",
 838                               skipped.nr));
 839                 for (i = 0; i < skipped.nr; i++)
 840                         fprintf(stderr, "  git branch -d %s\n",
 841                                 skipped.items[i].string);
 842         }
 843         string_list_clear(&skipped, 0);
 844
 845         return result;
 846 }
 847
 848 static void clear_push_info(void *util, const char *string)
 849 {
 850         struct push_info *info = util;
 851         free(info->dest);
 852         free(info);
 853 }
 854
 855 static void free_remote_ref_states(struct ref_states *states)
 856 {
 857         string_list_clear(&states->new, 0);
 858         string_list_clear(&states->stale, 1);
 859         string_list_clear(&states->tracked, 0);
 860         string_list_clear(&states->heads, 0);
 861         string_list_clear_func(&states->push, clear_push_info);
 862 }
 863
 864 static int append_ref_to_tracked_list(const char *refname,
 865         const unsigned char *sha1, int flags, void *cb_data)
 866 {
 867         struct ref_states *states = cb_data;
 868         struct refspec refspec;
 869
 870         if (flags & REF_ISSYMREF)
 871                 return 0;
 872
 873         memset(&refspec, 0, sizeof(refspec));
 874         refspec.dst = (char *)refname;
 875         if (!remote_find_tracking(states->remote, &refspec))
 876                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 877
 878         return 0;
 879 }
 880
 881 static int get_remote_ref_states(const char *name,
 882                                  struct ref_states *states,
 883                                  int query)
 884 {
 885         struct transport *transport;
 886         const struct ref *remote_refs;
 887
 888         states->remote = remote_get(name);
 889         if (!states->remote)
 890                 return error(_("No such remote: %s"), name);
 891
 892         read_branches();
 893
 894         if (query) {
 895                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 896                         states->remote->url[0] : NULL);
 897                 remote_refs = transport_get_remote_refs(transport);
 898                 transport_disconnect(transport);
 899
 900                 states->queried = 1;
 901                 if (query & GET_REF_STATES)
 902                         get_ref_states(remote_refs, states);
 903                 if (query & GET_HEAD_NAMES)
 904                         get_head_names(remote_refs, states);
 905                 if (query & GET_PUSH_REF_STATES)
 906                         get_push_ref_states(remote_refs, states);
 907         } else {
 908                 for_each_ref(append_ref_to_tracked_list, states);
 909                 sort_string_list(&states->tracked);
 910                 get_push_ref_states_noquery(states);
 911         }
 912
 913         return 0;
 914 }
 915
 916 struct show_info {
 917         struct string_list *list;
 918         struct ref_states *states;
 919         int width, width2;
 920         int any_rebase;
 921 };
 922
 923 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 924 {
 925         struct show_info *info = cb_data;
 926         int n = strlen(item->string);
 927         if (n > info->width)
 928                 info->width = n;
 929         string_list_insert(info->list, item->string);
 930         return 0;
 931 }
 932
 933 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 934 {
 935         struct show_info *info = cb_data;
 936         struct ref_states *states = info->states;
 937         const char *name = item->string;
 938
 939         if (states->queried) {
 940                 const char *fmt = "%s";
 941                 const char *arg = "";
 942                 if (string_list_has_string(&states->new, name)) {
 943                         fmt = _(" new (next fetch will store in remotes/%s)");
 944                         arg = states->remote->name;
 945                 } else if (string_list_has_string(&states->tracked, name))
 946                         arg = _(" tracked");
 947                 else if (string_list_has_string(&states->stale, name))
 948                         arg = _(" stale (use 'git remote prune' to remove)");
 949                 else
 950                         arg = _(" ???");
 951                 printf("    %-*s", info->width, name);
 952                 printf(fmt, arg);
 953                 printf("\n");
 954         } else
 955                 printf("    %s\n", name);
 956
 957         return 0;
 958 }
 959
 960 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 961 {
 962         struct show_info *show_info = cb_data;
 963         struct ref_states *states = show_info->states;
 964         struct branch_info *branch_info = branch_item->util;
 965         struct string_list_item *item;
 966         int n;
 967
 968         if (!branch_info->merge.nr || !branch_info->remote_name ||
 969             strcmp(states->remote->name, branch_info->remote_name))
 970                 return 0;
 971         if ((n = strlen(branch_item->string)) > show_info->width)
 972                 show_info->width = n;
 973         if (branch_info->rebase)
 974                 show_info->any_rebase = 1;
 975
 976         item = string_list_insert(show_info->list, branch_item->string);
 977         item->util = branch_info;
 978
 979         return 0;
 980 }
 981
 982 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 983 {
 984         struct show_info *show_info = cb_data;
 985         struct branch_info *branch_info = item->util;
 986         struct string_list *merge = &branch_info->merge;
 987         const char *also;
 988         int i;
 989
 990         if (branch_info->rebase && branch_info->merge.nr > 1) {
 991                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 992                         item->string);
 993                 return 0;
 994         }
 995
 996         printf("    %-*s ", show_info->width, item->string);
 997         if (branch_info->rebase) {
 998                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
 999                 return 0;
1000         } else if (show_info->any_rebase) {
1001                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1002                 also = _("    and with remote");
1003         } else {
1004                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1005                 also = _("   and with remote");
1006         }
1007         for (i = 1; i < merge->nr; i++)
1008                 printf("    %-*s %s %s\n", show_info->width, "", also,
1009                        merge->items[i].string);
1010
1011         return 0;
1012 }
1013
1014 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1015 {
1016         struct show_info *show_info = cb_data;
1017         struct push_info *push_info = push_item->util;
1018         struct string_list_item *item;
1019         int n;
1020         if ((n = strlen(push_item->string)) > show_info->width)
1021                 show_info->width = n;
1022         if ((n = strlen(push_info->dest)) > show_info->width2)
1023                 show_info->width2 = n;
1024         item = string_list_append(show_info->list, push_item->string);
1025         item->util = push_item->util;
1026         return 0;
1027 }
1028
1029 /*
1030  * Sorting comparison for a string list that has push_info
1031  * structs in its util field
1032  */
1033 static int cmp_string_with_push(const void *va, const void *vb)
1034 {
1035         const struct string_list_item *a = va;
1036         const struct string_list_item *b = vb;
1037         const struct push_info *a_push = a->util;
1038         const struct push_info *b_push = b->util;
1039         int cmp = strcmp(a->string, b->string);
1040         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1041 }
1042
1043 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1044 {
1045         struct show_info *show_info = cb_data;
1046         struct push_info *push_info = item->util;
1047         const char *src = item->string, *status = NULL;
1048
1049         switch (push_info->status) {
1050         case PUSH_STATUS_CREATE:
1051                 status = _("create");
1052                 break;
1053         case PUSH_STATUS_DELETE:
1054                 status = _("delete");
1055                 src = _("(none)");
1056                 break;
1057         case PUSH_STATUS_UPTODATE:
1058                 status = _("up to date");
1059                 break;
1060         case PUSH_STATUS_FASTFORWARD:
1061                 status = _("fast-forwardable");
1062                 break;
1063         case PUSH_STATUS_OUTOFDATE:
1064                 status = _("local out of date");
1065                 break;
1066         case PUSH_STATUS_NOTQUERIED:
1067                 break;
1068         }
1069         if (status) {
1070                 if (push_info->forced)
1071                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1072                                show_info->width2, push_info->dest, status);
1073                 else
1074                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1075                                show_info->width2, push_info->dest, status);
1076         } else {
1077                 if (push_info->forced)
1078                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1079                                push_info->dest);
1080                 else
1081                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1082                                push_info->dest);
1083         }
1084         return 0;
1085 }
1086
1087 static int show(int argc, const char **argv)
1088 {
1089         int no_query = 0, result = 0, query_flag = 0;
1090         struct option options[] = {
1091                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1092                 OPT_END()
1093         };
1094         struct ref_states states;
1095         struct string_list info_list = STRING_LIST_INIT_NODUP;
1096         struct show_info info;
1097
1098         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1099                              0);
1100
1101         if (argc < 1)
1102                 return show_all();
1103
1104         if (!no_query)
1105                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1106
1107         memset(&states, 0, sizeof(states));
1108         memset(&info, 0, sizeof(info));
1109         info.states = &states;
1110         info.list = &info_list;
1111         for (; argc; argc--, argv++) {
1112                 int i;
1113                 const char **url;
1114                 int url_nr;
1115
1116                 get_remote_ref_states(*argv, &states, query_flag);
1117
1118                 printf_ln(_("* remote %s"), *argv);
1119                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1120                        states.remote->url[0] : _("(no URL)"));
1121                 if (states.remote->pushurl_nr) {
1122                         url = states.remote->pushurl;
1123                         url_nr = states.remote->pushurl_nr;
1124                 } else {
1125                         url = states.remote->url;
1126                         url_nr = states.remote->url_nr;
1127                 }
1128                 for (i = 0; i < url_nr; i++)
1129                         printf_ln(_("  Push  URL: %s"), url[i]);
1130                 if (!i)
1131                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1132                 if (no_query)
1133                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1134                 else if (!states.heads.nr)
1135                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1136                 else if (states.heads.nr == 1)
1137                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1138                 else {
1139                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1140                                  " may be one of the following):\n"));
1141                         for (i = 0; i < states.heads.nr; i++)
1142                                 printf("    %s\n", states.heads.items[i].string);
1143                 }
1144
1145                 /* remote branch info */
1146                 info.width = 0;
1147                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1148                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1149                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1150                 if (info.list->nr)
1151                         printf_ln(Q_("  Remote branch:%s",
1152                                      "  Remote branches:%s",
1153                                      info.list->nr),
1154                                   no_query ? _(" (status not queried)") : "");
1155                 for_each_string_list(info.list, show_remote_info_item, &info);
1156                 string_list_clear(info.list, 0);
1157
1158                 /* git pull info */
1159                 info.width = 0;
1160                 info.any_rebase = 0;
1161                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1162                 if (info.list->nr)
1163                         printf_ln(Q_("  Local branch configured for 'git pull':",
1164                                      "  Local branches configured for 'git pull':",
1165                                      info.list->nr));
1166                 for_each_string_list(info.list, show_local_info_item, &info);
1167                 string_list_clear(info.list, 0);
1168
1169                 /* git push info */
1170                 if (states.remote->mirror)
1171                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1172
1173                 info.width = info.width2 = 0;
1174                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1175                 qsort(info.list->items, info.list->nr,
1176                         sizeof(*info.list->items), cmp_string_with_push);
1177                 if (info.list->nr)
1178                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1179                                      "  Local refs configured for 'git push'%s:",
1180                                      info.list->nr),
1181                                   no_query ? _(" (status not queried)") : "");
1182                 for_each_string_list(info.list, show_push_info_item, &info);
1183                 string_list_clear(info.list, 0);
1184
1185                 free_remote_ref_states(&states);
1186         }
1187
1188         return result;
1189 }
1190
1191 static int set_head(int argc, const char **argv)
1192 {
1193         int i, opt_a = 0, opt_d = 0, result = 0;
1194         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1195         char *head_name = NULL;
1196
1197         struct option options[] = {
1198                 OPT_BOOLEAN('a', "auto", &opt_a,
1199                             "set refs/remotes/<name>/HEAD according to remote"),
1200                 OPT_BOOLEAN('d', "delete", &opt_d,
1201                             "delete refs/remotes/<name>/HEAD"),
1202                 OPT_END()
1203         };
1204         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1205                              0);
1206         if (argc)
1207                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1208
1209         if (!opt_a && !opt_d && argc == 2) {
1210                 head_name = xstrdup(argv[1]);
1211         } else if (opt_a && !opt_d && argc == 1) {
1212                 struct ref_states states;
1213                 memset(&states, 0, sizeof(states));
1214                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1215                 if (!states.heads.nr)
1216                         result |= error(_("Cannot determine remote HEAD"));
1217                 else if (states.heads.nr > 1) {
1218                         result |= error(_("Multiple remote HEAD branches. "
1219                                           "Please choose one explicitly with:"));
1220                         for (i = 0; i < states.heads.nr; i++)
1221                                 fprintf(stderr, "  git remote set-head %s %s\n",
1222                                         argv[0], states.heads.items[i].string);
1223                 } else
1224                         head_name = xstrdup(states.heads.items[0].string);
1225                 free_remote_ref_states(&states);
1226         } else if (opt_d && !opt_a && argc == 1) {
1227                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1228                         result |= error(_("Could not delete %s"), buf.buf);
1229         } else
1230                 usage_with_options(builtin_remote_sethead_usage, options);
1231
1232         if (head_name) {
1233                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1234                 /* make sure it's valid */
1235                 if (!ref_exists(buf2.buf))
1236                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1237                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1238                         result |= error(_("Could not setup %s"), buf.buf);
1239                 if (opt_a)
1240                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1241                 free(head_name);
1242         }
1243
1244         strbuf_release(&buf);
1245         strbuf_release(&buf2);
1246         return result;
1247 }
1248
1249 static int prune(int argc, const char **argv)
1250 {
1251         int dry_run = 0, result = 0;
1252         struct option options[] = {
1253                 OPT__DRY_RUN(&dry_run, "dry run"),
1254                 OPT_END()
1255         };
1256
1257         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1258                              0);
1259
1260         if (argc < 1)
1261                 usage_with_options(builtin_remote_prune_usage, options);
1262
1263         for (; argc; argc--, argv++)
1264                 result |= prune_remote(*argv, dry_run);
1265
1266         return result;
1267 }
1268
1269 static int prune_remote(const char *remote, int dry_run)
1270 {
1271         int result = 0, i;
1272         struct ref_states states;
1273         const char *dangling_msg = dry_run
1274                 ? _(" %s will become dangling!")
1275                 : _(" %s has become dangling!");
1276
1277         memset(&states, 0, sizeof(states));
1278         get_remote_ref_states(remote, &states, GET_REF_STATES);
1279
1280         if (states.stale.nr) {
1281                 printf_ln(_("Pruning %s"), remote);
1282                 printf_ln(_("URL: %s"),
1283                        states.remote->url_nr
1284                        ? states.remote->url[0]
1285                        : _("(no URL)"));
1286         }
1287
1288         for (i = 0; i < states.stale.nr; i++) {
1289                 const char *refname = states.stale.items[i].util;
1290
1291                 if (!dry_run)
1292                         result |= delete_ref(refname, NULL, 0);
1293
1294                 if (dry_run)
1295                         printf_ln(_(" * [would prune] %s"),
1296                                abbrev_ref(refname, "refs/remotes/"));
1297                 else
1298                         printf_ln(_(" * [pruned] %s"),
1299                                abbrev_ref(refname, "refs/remotes/"));
1300                 warn_dangling_symref(stdout, dangling_msg, refname);
1301         }
1302
1303         free_remote_ref_states(&states);
1304         return result;
1305 }
1306
1307 static int get_remote_default(const char *key, const char *value, void *priv)
1308 {
1309         if (strcmp(key, "remotes.default") == 0) {
1310                 int *found = priv;
1311                 *found = 1;
1312         }
1313         return 0;
1314 }
1315
1316 static int update(int argc, const char **argv)
1317 {
1318         int i, prune = 0;
1319         struct option options[] = {
1320                 OPT_BOOLEAN('p', "prune", &prune,
1321                             "prune remotes after fetching"),
1322                 OPT_END()
1323         };
1324         const char **fetch_argv;
1325         int fetch_argc = 0;
1326         int default_defined = 0;
1327
1328         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1329
1330         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1331                              PARSE_OPT_KEEP_ARGV0);
1332
1333         fetch_argv[fetch_argc++] = "fetch";
1334
1335         if (prune)
1336                 fetch_argv[fetch_argc++] = "--prune";
1337         if (verbose)
1338                 fetch_argv[fetch_argc++] = "-v";
1339         fetch_argv[fetch_argc++] = "--multiple";
1340         if (argc < 2)
1341                 fetch_argv[fetch_argc++] = "default";
1342         for (i = 1; i < argc; i++)
1343                 fetch_argv[fetch_argc++] = argv[i];
1344
1345         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1346                 git_config(get_remote_default, &default_defined);
1347                 if (!default_defined)
1348                         fetch_argv[fetch_argc-1] = "--all";
1349         }
1350
1351         fetch_argv[fetch_argc] = NULL;
1352
1353         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1354 }
1355
1356 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1357 {
1358         return git_config_set_multivar(key, NULL, NULL, 1);
1359 }
1360
1361 static int add_branches(struct remote *remote, const char **branches,
1362                         const char *key)
1363 {
1364         const char *remotename = remote->name;
1365         int mirror = remote->mirror;
1366         struct strbuf refspec = STRBUF_INIT;
1367
1368         for (; *branches; branches++)
1369                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1370                         strbuf_release(&refspec);
1371                         return 1;
1372                 }
1373
1374         strbuf_release(&refspec);
1375         return 0;
1376 }
1377
1378 static int set_remote_branches(const char *remotename, const char **branches,
1379                                 int add_mode)
1380 {
1381         struct strbuf key = STRBUF_INIT;
1382         struct remote *remote;
1383
1384         strbuf_addf(&key, "remote.%s.fetch", remotename);
1385
1386         if (!remote_is_configured(remotename))
1387                 die(_("No such remote '%s'"), remotename);
1388         remote = remote_get(remotename);
1389
1390         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1391                 strbuf_release(&key);
1392                 return 1;
1393         }
1394         if (add_branches(remote, branches, key.buf)) {
1395                 strbuf_release(&key);
1396                 return 1;
1397         }
1398
1399         strbuf_release(&key);
1400         return 0;
1401 }
1402
1403 static int set_branches(int argc, const char **argv)
1404 {
1405         int add_mode = 0;
1406         struct option options[] = {
1407                 OPT_BOOLEAN('\0', "add", &add_mode, "add branch"),
1408                 OPT_END()
1409         };
1410
1411         argc = parse_options(argc, argv, NULL, options,
1412                              builtin_remote_setbranches_usage, 0);
1413         if (argc == 0) {
1414                 error(_("no remote specified"));
1415                 usage_with_options(builtin_remote_setbranches_usage, options);
1416         }
1417         argv[argc] = NULL;
1418
1419         return set_remote_branches(argv[0], argv + 1, add_mode);
1420 }
1421
1422 static int set_url(int argc, const char **argv)
1423 {
1424         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1425         int matches = 0, negative_matches = 0;
1426         const char *remotename = NULL;
1427         const char *newurl = NULL;
1428         const char *oldurl = NULL;
1429         struct remote *remote;
1430         regex_t old_regex;
1431         const char **urlset;
1432         int urlset_nr;
1433         struct strbuf name_buf = STRBUF_INIT;
1434         struct option options[] = {
1435                 OPT_BOOLEAN('\0', "push", &push_mode,
1436                             "manipulate push URLs"),
1437                 OPT_BOOLEAN('\0', "add", &add_mode,
1438                             "add URL"),
1439                 OPT_BOOLEAN('\0', "delete", &delete_mode,
1440                             "delete URLs"),
1441                 OPT_END()
1442         };
1443         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1444                              PARSE_OPT_KEEP_ARGV0);
1445
1446         if (add_mode && delete_mode)
1447                 die(_("--add --delete doesn't make sense"));
1448
1449         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1450                 usage_with_options(builtin_remote_seturl_usage, options);
1451
1452         remotename = argv[1];
1453         newurl = argv[2];
1454         if (argc > 3)
1455                 oldurl = argv[3];
1456
1457         if (delete_mode)
1458                 oldurl = newurl;
1459
1460         if (!remote_is_configured(remotename))
1461                 die(_("No such remote '%s'"), remotename);
1462         remote = remote_get(remotename);
1463
1464         if (push_mode) {
1465                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1466                 urlset = remote->pushurl;
1467                 urlset_nr = remote->pushurl_nr;
1468         } else {
1469                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1470                 urlset = remote->url;
1471                 urlset_nr = remote->url_nr;
1472         }
1473
1474         /* Special cases that add new entry. */
1475         if ((!oldurl && !delete_mode) || add_mode) {
1476                 if (add_mode)
1477                         git_config_set_multivar(name_buf.buf, newurl,
1478                                 "^$", 0);
1479                 else
1480                         git_config_set(name_buf.buf, newurl);
1481                 strbuf_release(&name_buf);
1482                 return 0;
1483         }
1484
1485         /* Old URL specified. Demand that one matches. */
1486         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1487                 die(_("Invalid old URL pattern: %s"), oldurl);
1488
1489         for (i = 0; i < urlset_nr; i++)
1490                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1491                         matches++;
1492                 else
1493                         negative_matches++;
1494         if (!delete_mode && !matches)
1495                 die(_("No such URL found: %s"), oldurl);
1496         if (delete_mode && !negative_matches && !push_mode)
1497                 die(_("Will not delete all non-push URLs"));
1498
1499         regfree(&old_regex);
1500
1501         if (!delete_mode)
1502                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1503         else
1504                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1505         return 0;
1506 }
1507
1508 static int get_one_entry(struct remote *remote, void *priv)
1509 {
1510         struct string_list *list = priv;
1511         struct strbuf url_buf = STRBUF_INIT;
1512         const char **url;
1513         int i, url_nr;
1514
1515         if (remote->url_nr > 0) {
1516                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1517                 string_list_append(list, remote->name)->util =
1518                                 strbuf_detach(&url_buf, NULL);
1519         } else
1520                 string_list_append(list, remote->name)->util = NULL;
1521         if (remote->pushurl_nr) {
1522                 url = remote->pushurl;
1523                 url_nr = remote->pushurl_nr;
1524         } else {
1525                 url = remote->url;
1526                 url_nr = remote->url_nr;
1527         }
1528         for (i = 0; i < url_nr; i++)
1529         {
1530                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1531                 string_list_append(list, remote->name)->util =
1532                                 strbuf_detach(&url_buf, NULL);
1533         }
1534
1535         return 0;
1536 }
1537
1538 static int show_all(void)
1539 {
1540         struct string_list list = STRING_LIST_INIT_NODUP;
1541         int result;
1542
1543         list.strdup_strings = 1;
1544         result = for_each_remote(get_one_entry, &list);
1545
1546         if (!result) {
1547                 int i;
1548
1549                 sort_string_list(&list);
1550                 for (i = 0; i < list.nr; i++) {
1551                         struct string_list_item *item = list.items + i;
1552                         if (verbose)
1553                                 printf("%s\t%s\n", item->string,
1554                                         item->util ? (const char *)item->util : "");
1555                         else {
1556                                 if (i && !strcmp((item - 1)->string, item->string))
1557                                         continue;
1558                                 printf("%s\n", item->string);
1559                         }
1560                 }
1561         }
1562         string_list_clear(&list, 1);
1563         return result;
1564 }
1565
1566 int cmd_remote(int argc, const char **argv, const char *prefix)
1567 {
1568         struct option options[] = {
1569                 OPT__VERBOSE(&verbose, "be verbose; must be placed before a subcommand"),
1570                 OPT_END()
1571         };
1572         int result;
1573
1574         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1575                 PARSE_OPT_STOP_AT_NON_OPTION);
1576
1577         if (argc < 1)
1578                 result = show_all();
1579         else if (!strcmp(argv[0], "add"))
1580                 result = add(argc, argv);
1581         else if (!strcmp(argv[0], "rename"))
1582                 result = mv(argc, argv);
1583         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1584                 result = rm(argc, argv);
1585         else if (!strcmp(argv[0], "set-head"))
1586                 result = set_head(argc, argv);
1587         else if (!strcmp(argv[0], "set-branches"))
1588                 result = set_branches(argc, argv);
1589         else if (!strcmp(argv[0], "set-url"))
1590                 result = set_url(argc, argv);
1591         else if (!strcmp(argv[0], "show"))
1592                 result = show(argc, argv);
1593         else if (!strcmp(argv[0], "prune"))
1594                 result = prune(argc, argv);
1595         else if (!strcmp(argv[0], "update"))
1596                 result = update(argc, argv);
1597         else {
1598                 error(_("Unknown subcommand: %s"), argv[0]);
1599                 usage_with_options(builtin_remote_usage, options);
1600         }
1601
1602         return result ? 1 : 0;
1603 }