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

   1 #include "builtin.h"
   2 #include "parse-options.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5 #include "string-list.h"
   6 #include "strbuf.h"
   7 #include "run-command.h"
   8 #include "refs.h"
   9 #include "argv-array.h"
  10
  11 static const char * const builtin_remote_usage[] = {
  12         N_("git remote [-v | --verbose]"),
  13         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags|--no-tags] [--mirror=<fetch|push>] <name> <url>"),
  14         N_("git remote rename <old> <new>"),
  15         N_("git remote remove <name>"),
  16         N_("git remote set-head <name> (-a | --auto | -d | --delete |<branch>)"),
  17         N_("git remote [-v | --verbose] show [-n] <name>"),
  18         N_("git remote prune [-n | --dry-run] <name>"),
  19         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  20         N_("git remote set-branches [--add] <name> <branch>..."),
  21         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  22         N_("git remote set-url --add <name> <newurl>"),
  23         N_("git remote set-url --delete <name> <url>"),
  24         NULL
  25 };
  26
  27 static const char * const builtin_remote_add_usage[] = {
  28         N_("git remote add [<options>] <name> <url>"),
  29         NULL
  30 };
  31
  32 static const char * const builtin_remote_rename_usage[] = {
  33         N_("git remote rename <old> <new>"),
  34         NULL
  35 };
  36
  37 static const char * const builtin_remote_rm_usage[] = {
  38         N_("git remote remove <name>"),
  39         NULL
  40 };
  41
  42 static const char * const builtin_remote_sethead_usage[] = {
  43         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  44         NULL
  45 };
  46
  47 static const char * const builtin_remote_setbranches_usage[] = {
  48         N_("git remote set-branches <name> <branch>..."),
  49         N_("git remote set-branches --add <name> <branch>..."),
  50         NULL
  51 };
  52
  53 static const char * const builtin_remote_show_usage[] = {
  54         N_("git remote show [<options>] <name>"),
  55         NULL
  56 };
  57
  58 static const char * const builtin_remote_prune_usage[] = {
  59         N_("git remote prune [<options>] <name>"),
  60         NULL
  61 };
  62
  63 static const char * const builtin_remote_update_usage[] = {
  64         N_("git remote update [<options>] [<group> | <remote>]..."),
  65         NULL
  66 };
  67
  68 static const char * const builtin_remote_seturl_usage[] = {
  69         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  70         N_("git remote set-url --add <name> <newurl>"),
  71         N_("git remote set-url --delete <name> <url>"),
  72         NULL
  73 };
  74
  75 #define GET_REF_STATES (1<<0)
  76 #define GET_HEAD_NAMES (1<<1)
  77 #define GET_PUSH_REF_STATES (1<<2)
  78
  79 static int verbose;
  80
  81 static inline int postfixcmp(const char *string, const char *postfix)
  82 {
  83         int len1 = strlen(string), len2 = strlen(postfix);
  84         if (len1 < len2)
  85                 return 1;
  86         return strcmp(string + len1 - len2, postfix);
  87 }
  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 int 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         return 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_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 && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 192                         remote->fetch_refspec_nr))
 193                 die(_("remote %s already exists."), name);
 194
 195         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 196         if (!valid_fetch_refspec(buf2.buf))
 197                 die(_("'%s' is not a valid remote name"), name);
 198
 199         strbuf_addf(&buf, "remote.%s.url", name);
 200         if (git_config_set(buf.buf, url))
 201                 return 1;
 202
 203         if (!mirror || mirror & MIRROR_FETCH) {
 204                 strbuf_reset(&buf);
 205                 strbuf_addf(&buf, "remote.%s.fetch", name);
 206                 if (track.nr == 0)
 207                         string_list_append(&track, "*");
 208                 for (i = 0; i < track.nr; i++) {
 209                         if (add_branch(buf.buf, track.items[i].string,
 210                                        name, mirror, &buf2))
 211                                 return 1;
 212                 }
 213         }
 214
 215         if (mirror & MIRROR_PUSH) {
 216                 strbuf_reset(&buf);
 217                 strbuf_addf(&buf, "remote.%s.mirror", name);
 218                 if (git_config_set(buf.buf, "true"))
 219                         return 1;
 220         }
 221
 222         if (fetch_tags != TAGS_DEFAULT) {
 223                 strbuf_reset(&buf);
 224                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 225                 if (git_config_set(buf.buf,
 226                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 227                         return 1;
 228         }
 229
 230         if (fetch && fetch_remote(name))
 231                 return 1;
 232
 233         if (master) {
 234                 strbuf_reset(&buf);
 235                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 236
 237                 strbuf_reset(&buf2);
 238                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 239
 240                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 241                         return error(_("Could not setup master '%s'"), master);
 242         }
 243
 244         strbuf_release(&buf);
 245         strbuf_release(&buf2);
 246         string_list_clear(&track, 0);
 247
 248         return 0;
 249 }
 250
 251 struct branch_info {
 252         char *remote_name;
 253         struct string_list merge;
 254         int rebase;
 255 };
 256
 257 static struct string_list branch_list;
 258
 259 static const char *abbrev_ref(const char *name, const char *prefix)
 260 {
 261         const char *abbrev = skip_prefix(name, prefix);
 262         if (abbrev)
 263                 return abbrev;
 264         return name;
 265 }
 266 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 267
 268 static int config_read_branches(const char *key, const char *value, void *cb)
 269 {
 270         if (!prefixcmp(key, "branch.")) {
 271                 const char *orig_key = key;
 272                 char *name;
 273                 struct string_list_item *item;
 274                 struct branch_info *info;
 275                 enum { REMOTE, MERGE, REBASE } type;
 276
 277                 key += 7;
 278                 if (!postfixcmp(key, ".remote")) {
 279                         name = xstrndup(key, strlen(key) - 7);
 280                         type = REMOTE;
 281                 } else if (!postfixcmp(key, ".merge")) {
 282                         name = xstrndup(key, strlen(key) - 6);
 283                         type = MERGE;
 284                 } else if (!postfixcmp(key, ".rebase")) {
 285                         name = xstrndup(key, strlen(key) - 7);
 286                         type = REBASE;
 287                 } else
 288                         return 0;
 289
 290                 item = string_list_insert(&branch_list, name);
 291
 292                 if (!item->util)
 293                         item->util = xcalloc(sizeof(struct branch_info), 1);
 294                 info = item->util;
 295                 if (type == REMOTE) {
 296                         if (info->remote_name)
 297                                 warning(_("more than one %s"), orig_key);
 298                         info->remote_name = xstrdup(value);
 299                 } else if (type == MERGE) {
 300                         char *space = strchr(value, ' ');
 301                         value = abbrev_branch(value);
 302                         while (space) {
 303                                 char *merge;
 304                                 merge = xstrndup(value, space - value);
 305                                 string_list_append(&info->merge, merge);
 306                                 value = abbrev_branch(space + 1);
 307                                 space = strchr(value, ' ');
 308                         }
 309                         string_list_append(&info->merge, xstrdup(value));
 310                 } else {
 311                         int v = git_config_maybe_bool(orig_key, value);
 312                         if (v >= 0)
 313                                 info->rebase = v;
 314                         else if (!strcmp(value, "preserve"))
 315                                 info->rebase = 1;
 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, 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_refspec_nr; i++)
 341                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 342                         die(_("Could not get fetch map for refspec %s"),
 343                                 states->remote->fetch_refspec[i]);
 344
 345         states->new.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, 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,
 355                                      states->remote->fetch_refspec_nr, fetch_map);
 356         for (ref = stale_refs; ref; ref = ref->next) {
 357                 struct string_list_item *item =
 358                         string_list_append(&states->stale, abbrev_branch(ref->name));
 359                 item->util = xstrdup(ref->name);
 360         }
 361         free_refs(stale_refs);
 362         free_refs(fetch_map);
 363
 364         sort_string_list(&states->new);
 365         sort_string_list(&states->tracked);
 366         sort_string_list(&states->stale);
 367
 368         return 0;
 369 }
 370
 371 struct push_info {
 372         char *dest;
 373         int forced;
 374         enum {
 375                 PUSH_STATUS_CREATE = 0,
 376                 PUSH_STATUS_DELETE,
 377                 PUSH_STATUS_UPTODATE,
 378                 PUSH_STATUS_FASTFORWARD,
 379                 PUSH_STATUS_OUTOFDATE,
 380                 PUSH_STATUS_NOTQUERIED
 381         } status;
 382 };
 383
 384 static int get_push_ref_states(const struct ref *remote_refs,
 385         struct ref_states *states)
 386 {
 387         struct remote *remote = states->remote;
 388         struct ref *ref, *local_refs, *push_map;
 389         if (remote->mirror)
 390                 return 0;
 391
 392         local_refs = get_local_heads();
 393         push_map = copy_ref_list(remote_refs);
 394
 395         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 396                         remote->push_refspec, MATCH_REFS_NONE);
 397
 398         states->push.strdup_strings = 1;
 399         for (ref = push_map; ref; ref = ref->next) {
 400                 struct string_list_item *item;
 401                 struct push_info *info;
 402
 403                 if (!ref->peer_ref)
 404                         continue;
 405                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 406
 407                 item = string_list_append(&states->push,
 408                                           abbrev_branch(ref->peer_ref->name));
 409                 item->util = xcalloc(sizeof(struct push_info), 1);
 410                 info = item->util;
 411                 info->forced = ref->force;
 412                 info->dest = xstrdup(abbrev_branch(ref->name));
 413
 414                 if (is_null_sha1(ref->new_sha1)) {
 415                         info->status = PUSH_STATUS_DELETE;
 416                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 417                         info->status = PUSH_STATUS_UPTODATE;
 418                 else if (is_null_sha1(ref->old_sha1))
 419                         info->status = PUSH_STATUS_CREATE;
 420                 else if (has_sha1_file(ref->old_sha1) &&
 421                          ref_newer(ref->new_sha1, ref->old_sha1))
 422                         info->status = PUSH_STATUS_FASTFORWARD;
 423                 else
 424                         info->status = PUSH_STATUS_OUTOFDATE;
 425         }
 426         free_refs(local_refs);
 427         free_refs(push_map);
 428         return 0;
 429 }
 430
 431 static int get_push_ref_states_noquery(struct ref_states *states)
 432 {
 433         int i;
 434         struct remote *remote = states->remote;
 435         struct string_list_item *item;
 436         struct push_info *info;
 437
 438         if (remote->mirror)
 439                 return 0;
 440
 441         states->push.strdup_strings = 1;
 442         if (!remote->push_refspec_nr) {
 443                 item = string_list_append(&states->push, _("(matching)"));
 444                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 445                 info->status = PUSH_STATUS_NOTQUERIED;
 446                 info->dest = xstrdup(item->string);
 447         }
 448         for (i = 0; i < remote->push_refspec_nr; i++) {
 449                 struct refspec *spec = remote->push + i;
 450                 if (spec->matching)
 451                         item = string_list_append(&states->push, _("(matching)"));
 452                 else if (strlen(spec->src))
 453                         item = string_list_append(&states->push, spec->src);
 454                 else
 455                         item = string_list_append(&states->push, _("(delete)"));
 456
 457                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 458                 info->forced = spec->force;
 459                 info->status = PUSH_STATUS_NOTQUERIED;
 460                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 461         }
 462         return 0;
 463 }
 464
 465 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 466 {
 467         struct ref *ref, *matches;
 468         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 469         struct refspec refspec;
 470
 471         refspec.force = 0;
 472         refspec.pattern = 1;
 473         refspec.src = refspec.dst = "refs/heads/*";
 474         states->heads.strdup_strings = 1;
 475         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 476         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 477                                     fetch_map, 1);
 478         for (ref = matches; ref; ref = ref->next)
 479                 string_list_append(&states->heads, abbrev_branch(ref->name));
 480
 481         free_refs(fetch_map);
 482         free_refs(matches);
 483
 484         return 0;
 485 }
 486
 487 struct known_remote {
 488         struct known_remote *next;
 489         struct remote *remote;
 490 };
 491
 492 struct known_remotes {
 493         struct remote *to_delete;
 494         struct known_remote *list;
 495 };
 496
 497 static int add_known_remote(struct remote *remote, void *cb_data)
 498 {
 499         struct known_remotes *all = cb_data;
 500         struct known_remote *r;
 501
 502         if (!strcmp(all->to_delete->name, remote->name))
 503                 return 0;
 504
 505         r = xmalloc(sizeof(*r));
 506         r->remote = remote;
 507         r->next = all->list;
 508         all->list = r;
 509         return 0;
 510 }
 511
 512 struct branches_for_remote {
 513         struct remote *remote;
 514         struct string_list *branches, *skipped;
 515         struct known_remotes *keep;
 516 };
 517
 518 static int add_branch_for_removal(const char *refname,
 519         const unsigned char *sha1, int flags, void *cb_data)
 520 {
 521         struct branches_for_remote *branches = cb_data;
 522         struct refspec refspec;
 523         struct string_list_item *item;
 524         struct known_remote *kr;
 525
 526         memset(&refspec, 0, sizeof(refspec));
 527         refspec.dst = (char *)refname;
 528         if (remote_find_tracking(branches->remote, &refspec))
 529                 return 0;
 530
 531         /* don't delete a branch if another remote also uses it */
 532         for (kr = branches->keep->list; kr; kr = kr->next) {
 533                 memset(&refspec, 0, sizeof(refspec));
 534                 refspec.dst = (char *)refname;
 535                 if (!remote_find_tracking(kr->remote, &refspec))
 536                         return 0;
 537         }
 538
 539         /* don't delete non-remote-tracking refs */
 540         if (prefixcmp(refname, "refs/remotes/")) {
 541                 /* advise user how to delete local branches */
 542                 if (!prefixcmp(refname, "refs/heads/"))
 543                         string_list_append(branches->skipped,
 544                                            abbrev_branch(refname));
 545                 /* silently skip over other non-remote refs */
 546                 return 0;
 547         }
 548
 549         /* make sure that symrefs are deleted */
 550         if (flags & REF_ISSYMREF)
 551                 return unlink(git_path("%s", refname));
 552
 553         item = string_list_append(branches->branches, refname);
 554         item->util = xmalloc(20);
 555         hashcpy(item->util, sha1);
 556
 557         return 0;
 558 }
 559
 560 struct rename_info {
 561         const char *old;
 562         const char *new;
 563         struct string_list *remote_branches;
 564 };
 565
 566 static int read_remote_branches(const char *refname,
 567         const unsigned char *sha1, int flags, void *cb_data)
 568 {
 569         struct rename_info *rename = cb_data;
 570         struct strbuf buf = STRBUF_INIT;
 571         struct string_list_item *item;
 572         int flag;
 573         unsigned char orig_sha1[20];
 574         const char *symref;
 575
 576         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 577         if (!prefixcmp(refname, buf.buf)) {
 578                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 579                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
 580                 if (flag & REF_ISSYMREF)
 581                         item->util = xstrdup(symref);
 582                 else
 583                         item->util = NULL;
 584         }
 585
 586         return 0;
 587 }
 588
 589 static int migrate_file(struct remote *remote)
 590 {
 591         struct strbuf buf = STRBUF_INIT;
 592         int i;
 593         char *path = NULL;
 594
 595         strbuf_addf(&buf, "remote.%s.url", remote->name);
 596         for (i = 0; i < remote->url_nr; i++)
 597                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 598                         return error(_("Could not append '%s' to '%s'"),
 599                                         remote->url[i], buf.buf);
 600         strbuf_reset(&buf);
 601         strbuf_addf(&buf, "remote.%s.push", remote->name);
 602         for (i = 0; i < remote->push_refspec_nr; i++)
 603                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 604                         return error(_("Could not append '%s' to '%s'"),
 605                                         remote->push_refspec[i], buf.buf);
 606         strbuf_reset(&buf);
 607         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 608         for (i = 0; i < remote->fetch_refspec_nr; i++)
 609                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 610                         return error(_("Could not append '%s' to '%s'"),
 611                                         remote->fetch_refspec[i], buf.buf);
 612         if (remote->origin == REMOTE_REMOTES)
 613                 path = git_path("remotes/%s", remote->name);
 614         else if (remote->origin == REMOTE_BRANCHES)
 615                 path = git_path("branches/%s", remote->name);
 616         if (path)
 617                 unlink_or_warn(path);
 618         return 0;
 619 }
 620
 621 static int mv(int argc, const char **argv)
 622 {
 623         struct option options[] = {
 624                 OPT_END()
 625         };
 626         struct remote *oldremote, *newremote;
 627         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 628                 old_remote_context = STRBUF_INIT;
 629         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 630         struct rename_info rename;
 631         int i, refspec_updated = 0;
 632
 633         if (argc != 3)
 634                 usage_with_options(builtin_remote_rename_usage, options);
 635
 636         rename.old = argv[1];
 637         rename.new = argv[2];
 638         rename.remote_branches = &remote_branches;
 639
 640         oldremote = remote_get(rename.old);
 641         if (!oldremote)
 642                 die(_("No such remote: %s"), rename.old);
 643
 644         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 645                 return migrate_file(oldremote);
 646
 647         newremote = remote_get(rename.new);
 648         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 649                 die(_("remote %s already exists."), rename.new);
 650
 651         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 652         if (!valid_fetch_refspec(buf.buf))
 653                 die(_("'%s' is not a valid remote name"), rename.new);
 654
 655         strbuf_reset(&buf);
 656         strbuf_addf(&buf, "remote.%s", rename.old);
 657         strbuf_addf(&buf2, "remote.%s", rename.new);
 658         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 659                 return error(_("Could not rename config section '%s' to '%s'"),
 660                                 buf.buf, buf2.buf);
 661
 662         strbuf_reset(&buf);
 663         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 664         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 665                 return error(_("Could not remove config section '%s'"), buf.buf);
 666         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 667         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 668                 char *ptr;
 669
 670                 strbuf_reset(&buf2);
 671                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 672                 ptr = strstr(buf2.buf, old_remote_context.buf);
 673                 if (ptr) {
 674                         refspec_updated = 1;
 675                         strbuf_splice(&buf2,
 676                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 677                                       strlen(rename.old), rename.new,
 678                                       strlen(rename.new));
 679                 } else
 680                         warning(_("Not updating non-default fetch refspec\n"
 681                                   "\t%s\n"
 682                                   "\tPlease update the configuration manually if necessary."),
 683                                 buf2.buf);
 684
 685                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 686                         return error(_("Could not append '%s'"), buf.buf);
 687         }
 688
 689         read_branches();
 690         for (i = 0; i < branch_list.nr; i++) {
 691                 struct string_list_item *item = branch_list.items + i;
 692                 struct branch_info *info = item->util;
 693                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 694                         strbuf_reset(&buf);
 695                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 696                         if (git_config_set(buf.buf, rename.new)) {
 697                                 return error(_("Could not set '%s'"), buf.buf);
 698                         }
 699                 }
 700         }
 701
 702         if (!refspec_updated)
 703                 return 0;
 704
 705         /*
 706          * First remove symrefs, then rename the rest, finally create
 707          * the new symrefs.
 708          */
 709         for_each_ref(read_remote_branches, &rename);
 710         for (i = 0; i < remote_branches.nr; i++) {
 711                 struct string_list_item *item = remote_branches.items + i;
 712                 int flag = 0;
 713                 unsigned char sha1[20];
 714
 715                 read_ref_full(item->string, sha1, 1, &flag);
 716                 if (!(flag & REF_ISSYMREF))
 717                         continue;
 718                 if (delete_ref(item->string, NULL, REF_NODEREF))
 719                         die(_("deleting '%s' failed"), item->string);
 720         }
 721         for (i = 0; i < remote_branches.nr; i++) {
 722                 struct string_list_item *item = remote_branches.items + i;
 723
 724                 if (item->util)
 725                         continue;
 726                 strbuf_reset(&buf);
 727                 strbuf_addstr(&buf, item->string);
 728                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 729                                 rename.new, strlen(rename.new));
 730                 strbuf_reset(&buf2);
 731                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 732                                 item->string, buf.buf);
 733                 if (rename_ref(item->string, buf.buf, buf2.buf))
 734                         die(_("renaming '%s' failed"), item->string);
 735         }
 736         for (i = 0; i < remote_branches.nr; i++) {
 737                 struct string_list_item *item = remote_branches.items + i;
 738
 739                 if (!item->util)
 740                         continue;
 741                 strbuf_reset(&buf);
 742                 strbuf_addstr(&buf, item->string);
 743                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 744                                 rename.new, strlen(rename.new));
 745                 strbuf_reset(&buf2);
 746                 strbuf_addstr(&buf2, item->util);
 747                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 748                                 rename.new, strlen(rename.new));
 749                 strbuf_reset(&buf3);
 750                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 751                                 item->string, buf.buf);
 752                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 753                         die(_("creating '%s' failed"), buf.buf);
 754         }
 755         return 0;
 756 }
 757
 758 static int remove_branches(struct string_list *branches)
 759 {
 760         int i, result = 0;
 761         for (i = 0; i < branches->nr; i++) {
 762                 struct string_list_item *item = branches->items + i;
 763                 const char *refname = item->string;
 764                 unsigned char *sha1 = item->util;
 765
 766                 if (delete_ref(refname, sha1, 0))
 767                         result |= error(_("Could not remove branch %s"), refname);
 768         }
 769         return result;
 770 }
 771
 772 static int rm(int argc, const char **argv)
 773 {
 774         struct option options[] = {
 775                 OPT_END()
 776         };
 777         struct remote *remote;
 778         struct strbuf buf = STRBUF_INIT;
 779         struct known_remotes known_remotes = { NULL, NULL };
 780         struct string_list branches = STRING_LIST_INIT_DUP;
 781         struct string_list skipped = STRING_LIST_INIT_DUP;
 782         struct branches_for_remote cb_data;
 783         int i, result;
 784
 785         memset(&cb_data, 0, sizeof(cb_data));
 786         cb_data.branches = &branches;
 787         cb_data.skipped = &skipped;
 788         cb_data.keep = &known_remotes;
 789
 790         if (argc != 2)
 791                 usage_with_options(builtin_remote_rm_usage, options);
 792
 793         remote = remote_get(argv[1]);
 794         if (!remote)
 795                 die(_("No such remote: %s"), argv[1]);
 796
 797         known_remotes.to_delete = remote;
 798         for_each_remote(add_known_remote, &known_remotes);
 799
 800         strbuf_addf(&buf, "remote.%s", remote->name);
 801         if (git_config_rename_section(buf.buf, NULL) < 1)
 802                 return error(_("Could not remove config section '%s'"), buf.buf);
 803
 804         read_branches();
 805         for (i = 0; i < branch_list.nr; i++) {
 806                 struct string_list_item *item = branch_list.items + i;
 807                 struct branch_info *info = item->util;
 808                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 809                         const char *keys[] = { "remote", "merge", NULL }, **k;
 810                         for (k = keys; *k; k++) {
 811                                 strbuf_reset(&buf);
 812                                 strbuf_addf(&buf, "branch.%s.%s",
 813                                                 item->string, *k);
 814                                 if (git_config_set(buf.buf, NULL)) {
 815                                         strbuf_release(&buf);
 816                                         return -1;
 817                                 }
 818                         }
 819                 }
 820         }
 821
 822         /*
 823          * We cannot just pass a function to for_each_ref() which deletes
 824          * the branches one by one, since for_each_ref() relies on cached
 825          * refs, which are invalidated when deleting a branch.
 826          */
 827         cb_data.remote = remote;
 828         result = for_each_ref(add_branch_for_removal, &cb_data);
 829         strbuf_release(&buf);
 830
 831         if (!result)
 832                 result = remove_branches(&branches);
 833         string_list_clear(&branches, 1);
 834
 835         if (skipped.nr) {
 836                 fprintf_ln(stderr,
 837                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 838                               "to delete it, use:",
 839                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 840                               "to delete them, use:",
 841                               skipped.nr));
 842                 for (i = 0; i < skipped.nr; i++)
 843                         fprintf(stderr, "  git branch -d %s\n",
 844                                 skipped.items[i].string);
 845         }
 846         string_list_clear(&skipped, 0);
 847
 848         return result;
 849 }
 850
 851 static void clear_push_info(void *util, const char *string)
 852 {
 853         struct push_info *info = util;
 854         free(info->dest);
 855         free(info);
 856 }
 857
 858 static void free_remote_ref_states(struct ref_states *states)
 859 {
 860         string_list_clear(&states->new, 0);
 861         string_list_clear(&states->stale, 1);
 862         string_list_clear(&states->tracked, 0);
 863         string_list_clear(&states->heads, 0);
 864         string_list_clear_func(&states->push, clear_push_info);
 865 }
 866
 867 static int append_ref_to_tracked_list(const char *refname,
 868         const unsigned char *sha1, int flags, void *cb_data)
 869 {
 870         struct ref_states *states = cb_data;
 871         struct refspec refspec;
 872
 873         if (flags & REF_ISSYMREF)
 874                 return 0;
 875
 876         memset(&refspec, 0, sizeof(refspec));
 877         refspec.dst = (char *)refname;
 878         if (!remote_find_tracking(states->remote, &refspec))
 879                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 880
 881         return 0;
 882 }
 883
 884 static int get_remote_ref_states(const char *name,
 885                                  struct ref_states *states,
 886                                  int query)
 887 {
 888         struct transport *transport;
 889         const struct ref *remote_refs;
 890
 891         states->remote = remote_get(name);
 892         if (!states->remote)
 893                 return error(_("No such remote: %s"), name);
 894
 895         read_branches();
 896
 897         if (query) {
 898                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 899                         states->remote->url[0] : NULL);
 900                 remote_refs = transport_get_remote_refs(transport);
 901                 transport_disconnect(transport);
 902
 903                 states->queried = 1;
 904                 if (query & GET_REF_STATES)
 905                         get_ref_states(remote_refs, states);
 906                 if (query & GET_HEAD_NAMES)
 907                         get_head_names(remote_refs, states);
 908                 if (query & GET_PUSH_REF_STATES)
 909                         get_push_ref_states(remote_refs, states);
 910         } else {
 911                 for_each_ref(append_ref_to_tracked_list, states);
 912                 sort_string_list(&states->tracked);
 913                 get_push_ref_states_noquery(states);
 914         }
 915
 916         return 0;
 917 }
 918
 919 struct show_info {
 920         struct string_list *list;
 921         struct ref_states *states;
 922         int width, width2;
 923         int any_rebase;
 924 };
 925
 926 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 927 {
 928         struct show_info *info = cb_data;
 929         int n = strlen(item->string);
 930         if (n > info->width)
 931                 info->width = n;
 932         string_list_insert(info->list, item->string);
 933         return 0;
 934 }
 935
 936 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 937 {
 938         struct show_info *info = cb_data;
 939         struct ref_states *states = info->states;
 940         const char *name = item->string;
 941
 942         if (states->queried) {
 943                 const char *fmt = "%s";
 944                 const char *arg = "";
 945                 if (string_list_has_string(&states->new, name)) {
 946                         fmt = _(" new (next fetch will store in remotes/%s)");
 947                         arg = states->remote->name;
 948                 } else if (string_list_has_string(&states->tracked, name))
 949                         arg = _(" tracked");
 950                 else if (string_list_has_string(&states->stale, name))
 951                         arg = _(" stale (use 'git remote prune' to remove)");
 952                 else
 953                         arg = _(" ???");
 954                 printf("    %-*s", info->width, name);
 955                 printf(fmt, arg);
 956                 printf("\n");
 957         } else
 958                 printf("    %s\n", name);
 959
 960         return 0;
 961 }
 962
 963 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 964 {
 965         struct show_info *show_info = cb_data;
 966         struct ref_states *states = show_info->states;
 967         struct branch_info *branch_info = branch_item->util;
 968         struct string_list_item *item;
 969         int n;
 970
 971         if (!branch_info->merge.nr || !branch_info->remote_name ||
 972             strcmp(states->remote->name, branch_info->remote_name))
 973                 return 0;
 974         if ((n = strlen(branch_item->string)) > show_info->width)
 975                 show_info->width = n;
 976         if (branch_info->rebase)
 977                 show_info->any_rebase = 1;
 978
 979         item = string_list_insert(show_info->list, branch_item->string);
 980         item->util = branch_info;
 981
 982         return 0;
 983 }
 984
 985 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 986 {
 987         struct show_info *show_info = cb_data;
 988         struct branch_info *branch_info = item->util;
 989         struct string_list *merge = &branch_info->merge;
 990         const char *also;
 991         int i;
 992
 993         if (branch_info->rebase && branch_info->merge.nr > 1) {
 994                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 995                         item->string);
 996                 return 0;
 997         }
 998
 999         printf("    %-*s ", show_info->width, item->string);
1000         if (branch_info->rebase) {
1001                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
1002                 return 0;
1003         } else if (show_info->any_rebase) {
1004                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
1005                 also = _("    and with remote");
1006         } else {
1007                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1008                 also = _("   and with remote");
1009         }
1010         for (i = 1; i < merge->nr; i++)
1011                 printf("    %-*s %s %s\n", show_info->width, "", also,
1012                        merge->items[i].string);
1013
1014         return 0;
1015 }
1016
1017 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1018 {
1019         struct show_info *show_info = cb_data;
1020         struct push_info *push_info = push_item->util;
1021         struct string_list_item *item;
1022         int n;
1023         if ((n = strlen(push_item->string)) > show_info->width)
1024                 show_info->width = n;
1025         if ((n = strlen(push_info->dest)) > show_info->width2)
1026                 show_info->width2 = n;
1027         item = string_list_append(show_info->list, push_item->string);
1028         item->util = push_item->util;
1029         return 0;
1030 }
1031
1032 /*
1033  * Sorting comparison for a string list that has push_info
1034  * structs in its util field
1035  */
1036 static int cmp_string_with_push(const void *va, const void *vb)
1037 {
1038         const struct string_list_item *a = va;
1039         const struct string_list_item *b = vb;
1040         const struct push_info *a_push = a->util;
1041         const struct push_info *b_push = b->util;
1042         int cmp = strcmp(a->string, b->string);
1043         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1044 }
1045
1046 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1047 {
1048         struct show_info *show_info = cb_data;
1049         struct push_info *push_info = item->util;
1050         const char *src = item->string, *status = NULL;
1051
1052         switch (push_info->status) {
1053         case PUSH_STATUS_CREATE:
1054                 status = _("create");
1055                 break;
1056         case PUSH_STATUS_DELETE:
1057                 status = _("delete");
1058                 src = _("(none)");
1059                 break;
1060         case PUSH_STATUS_UPTODATE:
1061                 status = _("up to date");
1062                 break;
1063         case PUSH_STATUS_FASTFORWARD:
1064                 status = _("fast-forwardable");
1065                 break;
1066         case PUSH_STATUS_OUTOFDATE:
1067                 status = _("local out of date");
1068                 break;
1069         case PUSH_STATUS_NOTQUERIED:
1070                 break;
1071         }
1072         if (status) {
1073                 if (push_info->forced)
1074                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1075                                show_info->width2, push_info->dest, status);
1076                 else
1077                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1078                                show_info->width2, push_info->dest, status);
1079         } else {
1080                 if (push_info->forced)
1081                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1082                                push_info->dest);
1083                 else
1084                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1085                                push_info->dest);
1086         }
1087         return 0;
1088 }
1089
1090 static int get_one_entry(struct remote *remote, void *priv)
1091 {
1092         struct string_list *list = priv;
1093         struct strbuf url_buf = STRBUF_INIT;
1094         const char **url;
1095         int i, url_nr;
1096
1097         if (remote->url_nr > 0) {
1098                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1099                 string_list_append(list, remote->name)->util =
1100                                 strbuf_detach(&url_buf, NULL);
1101         } else
1102                 string_list_append(list, remote->name)->util = NULL;
1103         if (remote->pushurl_nr) {
1104                 url = remote->pushurl;
1105                 url_nr = remote->pushurl_nr;
1106         } else {
1107                 url = remote->url;
1108                 url_nr = remote->url_nr;
1109         }
1110         for (i = 0; i < url_nr; i++)
1111         {
1112                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1113                 string_list_append(list, remote->name)->util =
1114                                 strbuf_detach(&url_buf, NULL);
1115         }
1116
1117         return 0;
1118 }
1119
1120 static int show_all(void)
1121 {
1122         struct string_list list = STRING_LIST_INIT_NODUP;
1123         int result;
1124
1125         list.strdup_strings = 1;
1126         result = for_each_remote(get_one_entry, &list);
1127
1128         if (!result) {
1129                 int i;
1130
1131                 sort_string_list(&list);
1132                 for (i = 0; i < list.nr; i++) {
1133                         struct string_list_item *item = list.items + i;
1134                         if (verbose)
1135                                 printf("%s\t%s\n", item->string,
1136                                         item->util ? (const char *)item->util : "");
1137                         else {
1138                                 if (i && !strcmp((item - 1)->string, item->string))
1139                                         continue;
1140                                 printf("%s\n", item->string);
1141                         }
1142                 }
1143         }
1144         string_list_clear(&list, 1);
1145         return result;
1146 }
1147
1148 static int show(int argc, const char **argv)
1149 {
1150         int no_query = 0, result = 0, query_flag = 0;
1151         struct option options[] = {
1152                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1153                 OPT_END()
1154         };
1155         struct ref_states states;
1156         struct string_list info_list = STRING_LIST_INIT_NODUP;
1157         struct show_info info;
1158
1159         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1160                              0);
1161
1162         if (argc < 1)
1163                 return show_all();
1164
1165         if (!no_query)
1166                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1167
1168         memset(&states, 0, sizeof(states));
1169         memset(&info, 0, sizeof(info));
1170         info.states = &states;
1171         info.list = &info_list;
1172         for (; argc; argc--, argv++) {
1173                 int i;
1174                 const char **url;
1175                 int url_nr;
1176
1177                 get_remote_ref_states(*argv, &states, query_flag);
1178
1179                 printf_ln(_("* remote %s"), *argv);
1180                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1181                        states.remote->url[0] : _("(no URL)"));
1182                 if (states.remote->pushurl_nr) {
1183                         url = states.remote->pushurl;
1184                         url_nr = states.remote->pushurl_nr;
1185                 } else {
1186                         url = states.remote->url;
1187                         url_nr = states.remote->url_nr;
1188                 }
1189                 for (i = 0; i < url_nr; i++)
1190                         printf_ln(_("  Push  URL: %s"), url[i]);
1191                 if (!i)
1192                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1193                 if (no_query)
1194                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1195                 else if (!states.heads.nr)
1196                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1197                 else if (states.heads.nr == 1)
1198                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1199                 else {
1200                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1201                                  " may be one of the following):\n"));
1202                         for (i = 0; i < states.heads.nr; i++)
1203                                 printf("    %s\n", states.heads.items[i].string);
1204                 }
1205
1206                 /* remote branch info */
1207                 info.width = 0;
1208                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1209                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1210                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1211                 if (info.list->nr)
1212                         printf_ln(Q_("  Remote branch:%s",
1213                                      "  Remote branches:%s",
1214                                      info.list->nr),
1215                                   no_query ? _(" (status not queried)") : "");
1216                 for_each_string_list(info.list, show_remote_info_item, &info);
1217                 string_list_clear(info.list, 0);
1218
1219                 /* git pull info */
1220                 info.width = 0;
1221                 info.any_rebase = 0;
1222                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1223                 if (info.list->nr)
1224                         printf_ln(Q_("  Local branch configured for 'git pull':",
1225                                      "  Local branches configured for 'git pull':",
1226                                      info.list->nr));
1227                 for_each_string_list(info.list, show_local_info_item, &info);
1228                 string_list_clear(info.list, 0);
1229
1230                 /* git push info */
1231                 if (states.remote->mirror)
1232                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1233
1234                 info.width = info.width2 = 0;
1235                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1236                 qsort(info.list->items, info.list->nr,
1237                         sizeof(*info.list->items), cmp_string_with_push);
1238                 if (info.list->nr)
1239                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1240                                      "  Local refs configured for 'git push'%s:",
1241                                      info.list->nr),
1242                                   no_query ? _(" (status not queried)") : "");
1243                 for_each_string_list(info.list, show_push_info_item, &info);
1244                 string_list_clear(info.list, 0);
1245
1246                 free_remote_ref_states(&states);
1247         }
1248
1249         return result;
1250 }
1251
1252 static int set_head(int argc, const char **argv)
1253 {
1254         int i, opt_a = 0, opt_d = 0, result = 0;
1255         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1256         char *head_name = NULL;
1257
1258         struct option options[] = {
1259                 OPT_BOOL('a', "auto", &opt_a,
1260                          N_("set refs/remotes/<name>/HEAD according to remote")),
1261                 OPT_BOOL('d', "delete", &opt_d,
1262                          N_("delete refs/remotes/<name>/HEAD")),
1263                 OPT_END()
1264         };
1265         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1266                              0);
1267         if (argc)
1268                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1269
1270         if (!opt_a && !opt_d && argc == 2) {
1271                 head_name = xstrdup(argv[1]);
1272         } else if (opt_a && !opt_d && argc == 1) {
1273                 struct ref_states states;
1274                 memset(&states, 0, sizeof(states));
1275                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1276                 if (!states.heads.nr)
1277                         result |= error(_("Cannot determine remote HEAD"));
1278                 else if (states.heads.nr > 1) {
1279                         result |= error(_("Multiple remote HEAD branches. "
1280                                           "Please choose one explicitly with:"));
1281                         for (i = 0; i < states.heads.nr; i++)
1282                                 fprintf(stderr, "  git remote set-head %s %s\n",
1283                                         argv[0], states.heads.items[i].string);
1284                 } else
1285                         head_name = xstrdup(states.heads.items[0].string);
1286                 free_remote_ref_states(&states);
1287         } else if (opt_d && !opt_a && argc == 1) {
1288                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1289                         result |= error(_("Could not delete %s"), buf.buf);
1290         } else
1291                 usage_with_options(builtin_remote_sethead_usage, options);
1292
1293         if (head_name) {
1294                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1295                 /* make sure it's valid */
1296                 if (!ref_exists(buf2.buf))
1297                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1298                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1299                         result |= error(_("Could not setup %s"), buf.buf);
1300                 if (opt_a)
1301                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1302                 free(head_name);
1303         }
1304
1305         strbuf_release(&buf);
1306         strbuf_release(&buf2);
1307         return result;
1308 }
1309
1310 static int prune_remote(const char *remote, int dry_run)
1311 {
1312         int result = 0, i;
1313         struct ref_states states;
1314         const char *dangling_msg = dry_run
1315                 ? _(" %s will become dangling!")
1316                 : _(" %s has become dangling!");
1317
1318         memset(&states, 0, sizeof(states));
1319         get_remote_ref_states(remote, &states, GET_REF_STATES);
1320
1321         if (states.stale.nr) {
1322                 printf_ln(_("Pruning %s"), remote);
1323                 printf_ln(_("URL: %s"),
1324                        states.remote->url_nr
1325                        ? states.remote->url[0]
1326                        : _("(no URL)"));
1327         }
1328
1329         for (i = 0; i < states.stale.nr; i++) {
1330                 const char *refname = states.stale.items[i].util;
1331
1332                 if (!dry_run)
1333                         result |= delete_ref(refname, NULL, 0);
1334
1335                 if (dry_run)
1336                         printf_ln(_(" * [would prune] %s"),
1337                                abbrev_ref(refname, "refs/remotes/"));
1338                 else
1339                         printf_ln(_(" * [pruned] %s"),
1340                                abbrev_ref(refname, "refs/remotes/"));
1341                 warn_dangling_symref(stdout, dangling_msg, refname);
1342         }
1343
1344         free_remote_ref_states(&states);
1345         return result;
1346 }
1347
1348 static int prune(int argc, const char **argv)
1349 {
1350         int dry_run = 0, result = 0;
1351         struct option options[] = {
1352                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1353                 OPT_END()
1354         };
1355
1356         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1357                              0);
1358
1359         if (argc < 1)
1360                 usage_with_options(builtin_remote_prune_usage, options);
1361
1362         for (; argc; argc--, argv++)
1363                 result |= prune_remote(*argv, dry_run);
1364
1365         return result;
1366 }
1367
1368 static int get_remote_default(const char *key, const char *value, void *priv)
1369 {
1370         if (strcmp(key, "remotes.default") == 0) {
1371                 int *found = priv;
1372                 *found = 1;
1373         }
1374         return 0;
1375 }
1376
1377 static int update(int argc, const char **argv)
1378 {
1379         int i, prune = -1;
1380         struct option options[] = {
1381                 OPT_BOOL('p', "prune", &prune,
1382                          N_("prune remotes after fetching")),
1383                 OPT_END()
1384         };
1385         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1386         int default_defined = 0;
1387         int retval;
1388
1389         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1390                              PARSE_OPT_KEEP_ARGV0);
1391
1392         argv_array_push(&fetch_argv, "fetch");
1393
1394         if (prune != -1)
1395                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1396         if (verbose)
1397                 argv_array_push(&fetch_argv, "-v");
1398         argv_array_push(&fetch_argv, "--multiple");
1399         if (argc < 2)
1400                 argv_array_push(&fetch_argv, "default");
1401         for (i = 1; i < argc; i++)
1402                 argv_array_push(&fetch_argv, argv[i]);
1403
1404         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1405                 git_config(get_remote_default, &default_defined);
1406                 if (!default_defined) {
1407                         argv_array_pop(&fetch_argv);
1408                         argv_array_push(&fetch_argv, "--all");
1409                 }
1410         }
1411
1412         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1413         argv_array_clear(&fetch_argv);
1414         return retval;
1415 }
1416
1417 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1418 {
1419         return git_config_set_multivar(key, NULL, NULL, 1);
1420 }
1421
1422 static int add_branches(struct remote *remote, const char **branches,
1423                         const char *key)
1424 {
1425         const char *remotename = remote->name;
1426         int mirror = remote->mirror;
1427         struct strbuf refspec = STRBUF_INIT;
1428
1429         for (; *branches; branches++)
1430                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1431                         strbuf_release(&refspec);
1432                         return 1;
1433                 }
1434
1435         strbuf_release(&refspec);
1436         return 0;
1437 }
1438
1439 static int set_remote_branches(const char *remotename, const char **branches,
1440                                 int add_mode)
1441 {
1442         struct strbuf key = STRBUF_INIT;
1443         struct remote *remote;
1444
1445         strbuf_addf(&key, "remote.%s.fetch", remotename);
1446
1447         if (!remote_is_configured(remotename))
1448                 die(_("No such remote '%s'"), remotename);
1449         remote = remote_get(remotename);
1450
1451         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1452                 strbuf_release(&key);
1453                 return 1;
1454         }
1455         if (add_branches(remote, branches, key.buf)) {
1456                 strbuf_release(&key);
1457                 return 1;
1458         }
1459
1460         strbuf_release(&key);
1461         return 0;
1462 }
1463
1464 static int set_branches(int argc, const char **argv)
1465 {
1466         int add_mode = 0;
1467         struct option options[] = {
1468                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1469                 OPT_END()
1470         };
1471
1472         argc = parse_options(argc, argv, NULL, options,
1473                              builtin_remote_setbranches_usage, 0);
1474         if (argc == 0) {
1475                 error(_("no remote specified"));
1476                 usage_with_options(builtin_remote_setbranches_usage, options);
1477         }
1478         argv[argc] = NULL;
1479
1480         return set_remote_branches(argv[0], argv + 1, add_mode);
1481 }
1482
1483 static int set_url(int argc, const char **argv)
1484 {
1485         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1486         int matches = 0, negative_matches = 0;
1487         const char *remotename = NULL;
1488         const char *newurl = NULL;
1489         const char *oldurl = NULL;
1490         struct remote *remote;
1491         regex_t old_regex;
1492         const char **urlset;
1493         int urlset_nr;
1494         struct strbuf name_buf = STRBUF_INIT;
1495         struct option options[] = {
1496                 OPT_BOOL('\0', "push", &push_mode,
1497                          N_("manipulate push URLs")),
1498                 OPT_BOOL('\0', "add", &add_mode,
1499                          N_("add URL")),
1500                 OPT_BOOL('\0', "delete", &delete_mode,
1501                             N_("delete URLs")),
1502                 OPT_END()
1503         };
1504         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1505                              PARSE_OPT_KEEP_ARGV0);
1506
1507         if (add_mode && delete_mode)
1508                 die(_("--add --delete doesn't make sense"));
1509
1510         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1511                 usage_with_options(builtin_remote_seturl_usage, options);
1512
1513         remotename = argv[1];
1514         newurl = argv[2];
1515         if (argc > 3)
1516                 oldurl = argv[3];
1517
1518         if (delete_mode)
1519                 oldurl = newurl;
1520
1521         if (!remote_is_configured(remotename))
1522                 die(_("No such remote '%s'"), remotename);
1523         remote = remote_get(remotename);
1524
1525         if (push_mode) {
1526                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1527                 urlset = remote->pushurl;
1528                 urlset_nr = remote->pushurl_nr;
1529         } else {
1530                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1531                 urlset = remote->url;
1532                 urlset_nr = remote->url_nr;
1533         }
1534
1535         /* Special cases that add new entry. */
1536         if ((!oldurl && !delete_mode) || add_mode) {
1537                 if (add_mode)
1538                         git_config_set_multivar(name_buf.buf, newurl,
1539                                 "^$", 0);
1540                 else
1541                         git_config_set(name_buf.buf, newurl);
1542                 strbuf_release(&name_buf);
1543                 return 0;
1544         }
1545
1546         /* Old URL specified. Demand that one matches. */
1547         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1548                 die(_("Invalid old URL pattern: %s"), oldurl);
1549
1550         for (i = 0; i < urlset_nr; i++)
1551                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1552                         matches++;
1553                 else
1554                         negative_matches++;
1555         if (!delete_mode && !matches)
1556                 die(_("No such URL found: %s"), oldurl);
1557         if (delete_mode && !negative_matches && !push_mode)
1558                 die(_("Will not delete all non-push URLs"));
1559
1560         regfree(&old_regex);
1561
1562         if (!delete_mode)
1563                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1564         else
1565                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1566         return 0;
1567 }
1568
1569 int cmd_remote(int argc, const char **argv, const char *prefix)
1570 {
1571         struct option options[] = {
1572                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1573                 OPT_END()
1574         };
1575         int result;
1576
1577         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1578                 PARSE_OPT_STOP_AT_NON_OPTION);
1579
1580         if (argc < 1)
1581                 result = show_all();
1582         else if (!strcmp(argv[0], "add"))
1583                 result = add(argc, argv);
1584         else if (!strcmp(argv[0], "rename"))
1585                 result = mv(argc, argv);
1586         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1587                 result = rm(argc, argv);
1588         else if (!strcmp(argv[0], "set-head"))
1589                 result = set_head(argc, argv);
1590         else if (!strcmp(argv[0], "set-branches"))
1591                 result = set_branches(argc, argv);
1592         else if (!strcmp(argv[0], "set-url"))
1593                 result = set_url(argc, argv);
1594         else if (!strcmp(argv[0], "show"))
1595                 result = show(argc, argv);
1596         else if (!strcmp(argv[0], "prune"))
1597                 result = prune(argc, argv);
1598         else if (!strcmp(argv[0], "update"))
1599                 result = update(argc, argv);
1600         else {
1601                 error(_("Unknown subcommand: %s"), argv[0]);
1602                 usage_with_options(builtin_remote_usage, options);
1603         }
1604
1605         return result ? 1 : 0;
1606 }