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
  10 static const char * const builtin_remote_usage[] = {
  11         N_("git remote [-v | --verbose]"),
  12         N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags|--no-tags] [--mirror=<fetch|push>] <name> <url>"),
  13         N_("git remote rename <old> <new>"),
  14         N_("git remote remove <name>"),
  15         N_("git remote set-head <name> (-a | --auto | -d | --delete |<branch>)"),
  16         N_("git remote [-v | --verbose] show [-n] <name>"),
  17         N_("git remote prune [-n | --dry-run] <name>"),
  18         N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
  19         N_("git remote set-branches [--add] <name> <branch>..."),
  20         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  21         N_("git remote set-url --add <name> <newurl>"),
  22         N_("git remote set-url --delete <name> <url>"),
  23         NULL
  24 };
  25
  26 static const char * const builtin_remote_add_usage[] = {
  27         N_("git remote add [<options>] <name> <url>"),
  28         NULL
  29 };
  30
  31 static const char * const builtin_remote_rename_usage[] = {
  32         N_("git remote rename <old> <new>"),
  33         NULL
  34 };
  35
  36 static const char * const builtin_remote_rm_usage[] = {
  37         N_("git remote remove <name>"),
  38         NULL
  39 };
  40
  41 static const char * const builtin_remote_sethead_usage[] = {
  42         N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
  43         NULL
  44 };
  45
  46 static const char * const builtin_remote_setbranches_usage[] = {
  47         N_("git remote set-branches <name> <branch>..."),
  48         N_("git remote set-branches --add <name> <branch>..."),
  49         NULL
  50 };
  51
  52 static const char * const builtin_remote_show_usage[] = {
  53         N_("git remote show [<options>] <name>"),
  54         NULL
  55 };
  56
  57 static const char * const builtin_remote_prune_usage[] = {
  58         N_("git remote prune [<options>] <name>"),
  59         NULL
  60 };
  61
  62 static const char * const builtin_remote_update_usage[] = {
  63         N_("git remote update [<options>] [<group> | <remote>]..."),
  64         NULL
  65 };
  66
  67 static const char * const builtin_remote_seturl_usage[] = {
  68         N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
  69         N_("git remote set-url --add <name> <newurl>"),
  70         N_("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 inline int postfixcmp(const char *string, const char *postfix)
  81 {
  82         int len1 = strlen(string), len2 = strlen(postfix);
  83         if (len1 < len2)
  84                 return 1;
  85         return strcmp(string + len1 - len2, postfix);
  86 }
  87
  88 static int fetch_remote(const char *name)
  89 {
  90         const char *argv[] = { "fetch", name, NULL, NULL };
  91         if (verbose) {
  92                 argv[1] = "-v";
  93                 argv[2] = name;
  94         }
  95         printf_ln(_("Updating %s"), name);
  96         if (run_command_v_opt(argv, RUN_GIT_CMD))
  97                 return error(_("Could not fetch %s"), name);
  98         return 0;
  99 }
 100
 101 enum {
 102         TAGS_UNSET = 0,
 103         TAGS_DEFAULT = 1,
 104         TAGS_SET = 2
 105 };
 106
 107 #define MIRROR_NONE 0
 108 #define MIRROR_FETCH 1
 109 #define MIRROR_PUSH 2
 110 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 111
 112 static int add_branch(const char *key, const char *branchname,
 113                 const char *remotename, int mirror, struct strbuf *tmp)
 114 {
 115         strbuf_reset(tmp);
 116         strbuf_addch(tmp, '+');
 117         if (mirror)
 118                 strbuf_addf(tmp, "refs/%s:refs/%s",
 119                                 branchname, branchname);
 120         else
 121                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 122                                 branchname, remotename, branchname);
 123         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 124 }
 125
 126 static const char mirror_advice[] =
 127 N_("--mirror is dangerous and deprecated; please\n"
 128    "\t use --mirror=fetch or --mirror=push instead");
 129
 130 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 131 {
 132         unsigned *mirror = opt->value;
 133         if (not)
 134                 *mirror = MIRROR_NONE;
 135         else if (!arg) {
 136                 warning("%s", _(mirror_advice));
 137                 *mirror = MIRROR_BOTH;
 138         }
 139         else if (!strcmp(arg, "fetch"))
 140                 *mirror = MIRROR_FETCH;
 141         else if (!strcmp(arg, "push"))
 142                 *mirror = MIRROR_PUSH;
 143         else
 144                 return error(_("unknown mirror argument: %s"), arg);
 145         return 0;
 146 }
 147
 148 static int add(int argc, const char **argv)
 149 {
 150         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 151         unsigned mirror = MIRROR_NONE;
 152         struct string_list track = STRING_LIST_INIT_NODUP;
 153         const char *master = NULL;
 154         struct remote *remote;
 155         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 156         const char *name, *url;
 157         int i;
 158
 159         struct option options[] = {
 160                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 161                 OPT_SET_INT(0, "tags", &fetch_tags,
 162                             N_("import all tags and associated objects when fetching"),
 163                             TAGS_SET),
 164                 OPT_SET_INT(0, NULL, &fetch_tags,
 165                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 166                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 167                                 N_("branch(es) to track")),
 168                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 169                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 170                         N_("set up remote as a mirror to push to or fetch from"),
 171                         PARSE_OPT_OPTARG, parse_mirror_opt },
 172                 OPT_END()
 173         };
 174
 175         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 176                              0);
 177
 178         if (argc != 2)
 179                 usage_with_options(builtin_remote_add_usage, options);
 180
 181         if (mirror && master)
 182                 die(_("specifying a master branch makes no sense with --mirror"));
 183         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 184                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 185
 186         name = argv[0];
 187         url = argv[1];
 188
 189         remote = remote_get(name);
 190         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 191                         remote->fetch_refspec_nr))
 192                 die(_("remote %s already exists."), name);
 193
 194         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 195         if (!valid_fetch_refspec(buf2.buf))
 196                 die(_("'%s' is not a valid remote name"), name);
 197
 198         strbuf_addf(&buf, "remote.%s.url", name);
 199         if (git_config_set(buf.buf, url))
 200                 return 1;
 201
 202         if (!mirror || mirror & MIRROR_FETCH) {
 203                 strbuf_reset(&buf);
 204                 strbuf_addf(&buf, "remote.%s.fetch", name);
 205                 if (track.nr == 0)
 206                         string_list_append(&track, "*");
 207                 for (i = 0; i < track.nr; i++) {
 208                         if (add_branch(buf.buf, track.items[i].string,
 209                                        name, mirror, &buf2))
 210                                 return 1;
 211                 }
 212         }
 213
 214         if (mirror & MIRROR_PUSH) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "remote.%s.mirror", name);
 217                 if (git_config_set(buf.buf, "true"))
 218                         return 1;
 219         }
 220
 221         if (fetch_tags != TAGS_DEFAULT) {
 222                 strbuf_reset(&buf);
 223                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 224                 if (git_config_set(buf.buf,
 225                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 226                         return 1;
 227         }
 228
 229         if (fetch && fetch_remote(name))
 230                 return 1;
 231
 232         if (master) {
 233                 strbuf_reset(&buf);
 234                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 235
 236                 strbuf_reset(&buf2);
 237                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 238
 239                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 240                         return error(_("Could not setup master '%s'"), master);
 241         }
 242
 243         strbuf_release(&buf);
 244         strbuf_release(&buf2);
 245         string_list_clear(&track, 0);
 246
 247         return 0;
 248 }
 249
 250 struct branch_info {
 251         char *remote_name;
 252         struct string_list merge;
 253         int rebase;
 254 };
 255
 256 static struct string_list branch_list;
 257
 258 static const char *abbrev_ref(const char *name, const char *prefix)
 259 {
 260         const char *abbrev = skip_prefix(name, prefix);
 261         if (abbrev)
 262                 return abbrev;
 263         return name;
 264 }
 265 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 266
 267 static int config_read_branches(const char *key, const char *value, void *cb)
 268 {
 269         if (!prefixcmp(key, "branch.")) {
 270                 const char *orig_key = key;
 271                 char *name;
 272                 struct string_list_item *item;
 273                 struct branch_info *info;
 274                 enum { REMOTE, MERGE, REBASE } type;
 275
 276                 key += 7;
 277                 if (!postfixcmp(key, ".remote")) {
 278                         name = xstrndup(key, strlen(key) - 7);
 279                         type = REMOTE;
 280                 } else if (!postfixcmp(key, ".merge")) {
 281                         name = xstrndup(key, strlen(key) - 6);
 282                         type = MERGE;
 283                 } else if (!postfixcmp(key, ".rebase")) {
 284                         name = xstrndup(key, strlen(key) - 7);
 285                         type = REBASE;
 286                 } else
 287                         return 0;
 288
 289                 item = string_list_insert(&branch_list, name);
 290
 291                 if (!item->util)
 292                         item->util = xcalloc(sizeof(struct branch_info), 1);
 293                 info = item->util;
 294                 if (type == REMOTE) {
 295                         if (info->remote_name)
 296                                 warning(_("more than one %s"), orig_key);
 297                         info->remote_name = xstrdup(value);
 298                 } else if (type == MERGE) {
 299                         char *space = strchr(value, ' ');
 300                         value = abbrev_branch(value);
 301                         while (space) {
 302                                 char *merge;
 303                                 merge = xstrndup(value, space - value);
 304                                 string_list_append(&info->merge, merge);
 305                                 value = abbrev_branch(space + 1);
 306                                 space = strchr(value, ' ');
 307                         }
 308                         string_list_append(&info->merge, xstrdup(value));
 309                 } else
 310                         info->rebase = git_config_bool(orig_key, value);
 311         }
 312         return 0;
 313 }
 314
 315 static void read_branches(void)
 316 {
 317         if (branch_list.nr)
 318                 return;
 319         git_config(config_read_branches, NULL);
 320 }
 321
 322 struct ref_states {
 323         struct remote *remote;
 324         struct string_list new, stale, tracked, heads, push;
 325         int queried;
 326 };
 327
 328 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 329 {
 330         struct ref *fetch_map = NULL, **tail = &fetch_map;
 331         struct ref *ref, *stale_refs;
 332         int i;
 333
 334         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 335                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 336                         die(_("Could not get fetch map for refspec %s"),
 337                                 states->remote->fetch_refspec[i]);
 338
 339         states->new.strdup_strings = 1;
 340         states->tracked.strdup_strings = 1;
 341         states->stale.strdup_strings = 1;
 342         for (ref = fetch_map; ref; ref = ref->next) {
 343                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 344                         string_list_append(&states->new, abbrev_branch(ref->name));
 345                 else
 346                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 347         }
 348         stale_refs = get_stale_heads(states->remote->fetch,
 349                                      states->remote->fetch_refspec_nr, fetch_map);
 350         for (ref = stale_refs; ref; ref = ref->next) {
 351                 struct string_list_item *item =
 352                         string_list_append(&states->stale, abbrev_branch(ref->name));
 353                 item->util = xstrdup(ref->name);
 354         }
 355         free_refs(stale_refs);
 356         free_refs(fetch_map);
 357
 358         sort_string_list(&states->new);
 359         sort_string_list(&states->tracked);
 360         sort_string_list(&states->stale);
 361
 362         return 0;
 363 }
 364
 365 struct push_info {
 366         char *dest;
 367         int forced;
 368         enum {
 369                 PUSH_STATUS_CREATE = 0,
 370                 PUSH_STATUS_DELETE,
 371                 PUSH_STATUS_UPTODATE,
 372                 PUSH_STATUS_FASTFORWARD,
 373                 PUSH_STATUS_OUTOFDATE,
 374                 PUSH_STATUS_NOTQUERIED
 375         } status;
 376 };
 377
 378 static int get_push_ref_states(const struct ref *remote_refs,
 379         struct ref_states *states)
 380 {
 381         struct remote *remote = states->remote;
 382         struct ref *ref, *local_refs, *push_map;
 383         if (remote->mirror)
 384                 return 0;
 385
 386         local_refs = get_local_heads();
 387         push_map = copy_ref_list(remote_refs);
 388
 389         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 390                         remote->push_refspec, MATCH_REFS_NONE);
 391
 392         states->push.strdup_strings = 1;
 393         for (ref = push_map; ref; ref = ref->next) {
 394                 struct string_list_item *item;
 395                 struct push_info *info;
 396
 397                 if (!ref->peer_ref)
 398                         continue;
 399                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 400
 401                 item = string_list_append(&states->push,
 402                                           abbrev_branch(ref->peer_ref->name));
 403                 item->util = xcalloc(sizeof(struct push_info), 1);
 404                 info = item->util;
 405                 info->forced = ref->force;
 406                 info->dest = xstrdup(abbrev_branch(ref->name));
 407
 408                 if (is_null_sha1(ref->new_sha1)) {
 409                         info->status = PUSH_STATUS_DELETE;
 410                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 411                         info->status = PUSH_STATUS_UPTODATE;
 412                 else if (is_null_sha1(ref->old_sha1))
 413                         info->status = PUSH_STATUS_CREATE;
 414                 else if (has_sha1_file(ref->old_sha1) &&
 415                          ref_newer(ref->new_sha1, ref->old_sha1))
 416                         info->status = PUSH_STATUS_FASTFORWARD;
 417                 else
 418                         info->status = PUSH_STATUS_OUTOFDATE;
 419         }
 420         free_refs(local_refs);
 421         free_refs(push_map);
 422         return 0;
 423 }
 424
 425 static int get_push_ref_states_noquery(struct ref_states *states)
 426 {
 427         int i;
 428         struct remote *remote = states->remote;
 429         struct string_list_item *item;
 430         struct push_info *info;
 431
 432         if (remote->mirror)
 433                 return 0;
 434
 435         states->push.strdup_strings = 1;
 436         if (!remote->push_refspec_nr) {
 437                 item = string_list_append(&states->push, _("(matching)"));
 438                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 439                 info->status = PUSH_STATUS_NOTQUERIED;
 440                 info->dest = xstrdup(item->string);
 441         }
 442         for (i = 0; i < remote->push_refspec_nr; i++) {
 443                 struct refspec *spec = remote->push + i;
 444                 if (spec->matching)
 445                         item = string_list_append(&states->push, _("(matching)"));
 446                 else if (strlen(spec->src))
 447                         item = string_list_append(&states->push, spec->src);
 448                 else
 449                         item = string_list_append(&states->push, _("(delete)"));
 450
 451                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 452                 info->forced = spec->force;
 453                 info->status = PUSH_STATUS_NOTQUERIED;
 454                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 455         }
 456         return 0;
 457 }
 458
 459 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 460 {
 461         struct ref *ref, *matches;
 462         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 463         struct refspec refspec;
 464
 465         refspec.force = 0;
 466         refspec.pattern = 1;
 467         refspec.src = refspec.dst = "refs/heads/*";
 468         states->heads.strdup_strings = 1;
 469         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 470         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 471                                     fetch_map, 1);
 472         for (ref = matches; ref; ref = ref->next)
 473                 string_list_append(&states->heads, abbrev_branch(ref->name));
 474
 475         free_refs(fetch_map);
 476         free_refs(matches);
 477
 478         return 0;
 479 }
 480
 481 struct known_remote {
 482         struct known_remote *next;
 483         struct remote *remote;
 484 };
 485
 486 struct known_remotes {
 487         struct remote *to_delete;
 488         struct known_remote *list;
 489 };
 490
 491 static int add_known_remote(struct remote *remote, void *cb_data)
 492 {
 493         struct known_remotes *all = cb_data;
 494         struct known_remote *r;
 495
 496         if (!strcmp(all->to_delete->name, remote->name))
 497                 return 0;
 498
 499         r = xmalloc(sizeof(*r));
 500         r->remote = remote;
 501         r->next = all->list;
 502         all->list = r;
 503         return 0;
 504 }
 505
 506 struct branches_for_remote {
 507         struct remote *remote;
 508         struct string_list *branches, *skipped;
 509         struct known_remotes *keep;
 510 };
 511
 512 static int add_branch_for_removal(const char *refname,
 513         const unsigned char *sha1, int flags, void *cb_data)
 514 {
 515         struct branches_for_remote *branches = cb_data;
 516         struct refspec refspec;
 517         struct string_list_item *item;
 518         struct known_remote *kr;
 519
 520         memset(&refspec, 0, sizeof(refspec));
 521         refspec.dst = (char *)refname;
 522         if (remote_find_tracking(branches->remote, &refspec))
 523                 return 0;
 524
 525         /* don't delete a branch if another remote also uses it */
 526         for (kr = branches->keep->list; kr; kr = kr->next) {
 527                 memset(&refspec, 0, sizeof(refspec));
 528                 refspec.dst = (char *)refname;
 529                 if (!remote_find_tracking(kr->remote, &refspec))
 530                         return 0;
 531         }
 532
 533         /* don't delete non-remote-tracking refs */
 534         if (prefixcmp(refname, "refs/remotes/")) {
 535                 /* advise user how to delete local branches */
 536                 if (!prefixcmp(refname, "refs/heads/"))
 537                         string_list_append(branches->skipped,
 538                                            abbrev_branch(refname));
 539                 /* silently skip over other non-remote refs */
 540                 return 0;
 541         }
 542
 543         /* make sure that symrefs are deleted */
 544         if (flags & REF_ISSYMREF)
 545                 return unlink(git_path("%s", refname));
 546
 547         item = string_list_append(branches->branches, refname);
 548         item->util = xmalloc(20);
 549         hashcpy(item->util, sha1);
 550
 551         return 0;
 552 }
 553
 554 struct rename_info {
 555         const char *old;
 556         const char *new;
 557         struct string_list *remote_branches;
 558 };
 559
 560 static int read_remote_branches(const char *refname,
 561         const unsigned char *sha1, int flags, void *cb_data)
 562 {
 563         struct rename_info *rename = cb_data;
 564         struct strbuf buf = STRBUF_INIT;
 565         struct string_list_item *item;
 566         int flag;
 567         unsigned char orig_sha1[20];
 568         const char *symref;
 569
 570         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 571         if (!prefixcmp(refname, buf.buf)) {
 572                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 573                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
 574                 if (flag & REF_ISSYMREF)
 575                         item->util = xstrdup(symref);
 576                 else
 577                         item->util = NULL;
 578         }
 579
 580         return 0;
 581 }
 582
 583 static int migrate_file(struct remote *remote)
 584 {
 585         struct strbuf buf = STRBUF_INIT;
 586         int i;
 587         char *path = NULL;
 588
 589         strbuf_addf(&buf, "remote.%s.url", remote->name);
 590         for (i = 0; i < remote->url_nr; i++)
 591                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 592                         return error(_("Could not append '%s' to '%s'"),
 593                                         remote->url[i], buf.buf);
 594         strbuf_reset(&buf);
 595         strbuf_addf(&buf, "remote.%s.push", remote->name);
 596         for (i = 0; i < remote->push_refspec_nr; i++)
 597                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 598                         return error(_("Could not append '%s' to '%s'"),
 599                                         remote->push_refspec[i], buf.buf);
 600         strbuf_reset(&buf);
 601         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 602         for (i = 0; i < remote->fetch_refspec_nr; i++)
 603                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 604                         return error(_("Could not append '%s' to '%s'"),
 605                                         remote->fetch_refspec[i], buf.buf);
 606         if (remote->origin == REMOTE_REMOTES)
 607                 path = git_path("remotes/%s", remote->name);
 608         else if (remote->origin == REMOTE_BRANCHES)
 609                 path = git_path("branches/%s", remote->name);
 610         if (path)
 611                 unlink_or_warn(path);
 612         return 0;
 613 }
 614
 615 static int mv(int argc, const char **argv)
 616 {
 617         struct option options[] = {
 618                 OPT_END()
 619         };
 620         struct remote *oldremote, *newremote;
 621         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 622                 old_remote_context = STRBUF_INIT;
 623         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 624         struct rename_info rename;
 625         int i, refspec_updated = 0;
 626
 627         if (argc != 3)
 628                 usage_with_options(builtin_remote_rename_usage, options);
 629
 630         rename.old = argv[1];
 631         rename.new = argv[2];
 632         rename.remote_branches = &remote_branches;
 633
 634         oldremote = remote_get(rename.old);
 635         if (!oldremote)
 636                 die(_("No such remote: %s"), rename.old);
 637
 638         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 639                 return migrate_file(oldremote);
 640
 641         newremote = remote_get(rename.new);
 642         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 643                 die(_("remote %s already exists."), rename.new);
 644
 645         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 646         if (!valid_fetch_refspec(buf.buf))
 647                 die(_("'%s' is not a valid remote name"), rename.new);
 648
 649         strbuf_reset(&buf);
 650         strbuf_addf(&buf, "remote.%s", rename.old);
 651         strbuf_addf(&buf2, "remote.%s", rename.new);
 652         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 653                 return error(_("Could not rename config section '%s' to '%s'"),
 654                                 buf.buf, buf2.buf);
 655
 656         strbuf_reset(&buf);
 657         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 658         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 659                 return error(_("Could not remove config section '%s'"), buf.buf);
 660         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 661         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 662                 char *ptr;
 663
 664                 strbuf_reset(&buf2);
 665                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 666                 ptr = strstr(buf2.buf, old_remote_context.buf);
 667                 if (ptr) {
 668                         refspec_updated = 1;
 669                         strbuf_splice(&buf2,
 670                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 671                                       strlen(rename.old), rename.new,
 672                                       strlen(rename.new));
 673                 } else
 674                         warning(_("Not updating non-default fetch refspec\n"
 675                                   "\t%s\n"
 676                                   "\tPlease update the configuration manually if necessary."),
 677                                 buf2.buf);
 678
 679                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 680                         return error(_("Could not append '%s'"), buf.buf);
 681         }
 682
 683         read_branches();
 684         for (i = 0; i < branch_list.nr; i++) {
 685                 struct string_list_item *item = branch_list.items + i;
 686                 struct branch_info *info = item->util;
 687                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 688                         strbuf_reset(&buf);
 689                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 690                         if (git_config_set(buf.buf, rename.new)) {
 691                                 return error(_("Could not set '%s'"), buf.buf);
 692                         }
 693                 }
 694         }
 695
 696         if (!refspec_updated)
 697                 return 0;
 698
 699         /*
 700          * First remove symrefs, then rename the rest, finally create
 701          * the new symrefs.
 702          */
 703         for_each_ref(read_remote_branches, &rename);
 704         for (i = 0; i < remote_branches.nr; i++) {
 705                 struct string_list_item *item = remote_branches.items + i;
 706                 int flag = 0;
 707                 unsigned char sha1[20];
 708
 709                 read_ref_full(item->string, sha1, 1, &flag);
 710                 if (!(flag & REF_ISSYMREF))
 711                         continue;
 712                 if (delete_ref(item->string, NULL, REF_NODEREF))
 713                         die(_("deleting '%s' failed"), item->string);
 714         }
 715         for (i = 0; i < remote_branches.nr; i++) {
 716                 struct string_list_item *item = remote_branches.items + i;
 717
 718                 if (item->util)
 719                         continue;
 720                 strbuf_reset(&buf);
 721                 strbuf_addstr(&buf, item->string);
 722                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 723                                 rename.new, strlen(rename.new));
 724                 strbuf_reset(&buf2);
 725                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 726                                 item->string, buf.buf);
 727                 if (rename_ref(item->string, buf.buf, buf2.buf))
 728                         die(_("renaming '%s' failed"), item->string);
 729         }
 730         for (i = 0; i < remote_branches.nr; i++) {
 731                 struct string_list_item *item = remote_branches.items + i;
 732
 733                 if (!item->util)
 734                         continue;
 735                 strbuf_reset(&buf);
 736                 strbuf_addstr(&buf, item->string);
 737                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 738                                 rename.new, strlen(rename.new));
 739                 strbuf_reset(&buf2);
 740                 strbuf_addstr(&buf2, item->util);
 741                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 742                                 rename.new, strlen(rename.new));
 743                 strbuf_reset(&buf3);
 744                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 745                                 item->string, buf.buf);
 746                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 747                         die(_("creating '%s' failed"), buf.buf);
 748         }
 749         return 0;
 750 }
 751
 752 static int remove_branches(struct string_list *branches)
 753 {
 754         int i, result = 0;
 755         for (i = 0; i < branches->nr; i++) {
 756                 struct string_list_item *item = branches->items + i;
 757                 const char *refname = item->string;
 758                 unsigned char *sha1 = item->util;
 759
 760                 if (delete_ref(refname, sha1, 0))
 761                         result |= error(_("Could not remove branch %s"), refname);
 762         }
 763         return result;
 764 }
 765
 766 static int rm(int argc, const char **argv)
 767 {
 768         struct option options[] = {
 769                 OPT_END()
 770         };
 771         struct remote *remote;
 772         struct strbuf buf = STRBUF_INIT;
 773         struct known_remotes known_remotes = { NULL, NULL };
 774         struct string_list branches = STRING_LIST_INIT_DUP;
 775         struct string_list skipped = STRING_LIST_INIT_DUP;
 776         struct branches_for_remote cb_data;
 777         int i, result;
 778
 779         memset(&cb_data, 0, sizeof(cb_data));
 780         cb_data.branches = &branches;
 781         cb_data.skipped = &skipped;
 782         cb_data.keep = &known_remotes;
 783
 784         if (argc != 2)
 785                 usage_with_options(builtin_remote_rm_usage, options);
 786
 787         remote = remote_get(argv[1]);
 788         if (!remote)
 789                 die(_("No such remote: %s"), argv[1]);
 790
 791         known_remotes.to_delete = remote;
 792         for_each_remote(add_known_remote, &known_remotes);
 793
 794         strbuf_addf(&buf, "remote.%s", remote->name);
 795         if (git_config_rename_section(buf.buf, NULL) < 1)
 796                 return error(_("Could not remove config section '%s'"), buf.buf);
 797
 798         read_branches();
 799         for (i = 0; i < branch_list.nr; i++) {
 800                 struct string_list_item *item = branch_list.items + i;
 801                 struct branch_info *info = item->util;
 802                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 803                         const char *keys[] = { "remote", "merge", NULL }, **k;
 804                         for (k = keys; *k; k++) {
 805                                 strbuf_reset(&buf);
 806                                 strbuf_addf(&buf, "branch.%s.%s",
 807                                                 item->string, *k);
 808                                 if (git_config_set(buf.buf, NULL)) {
 809                                         strbuf_release(&buf);
 810                                         return -1;
 811                                 }
 812                         }
 813                 }
 814         }
 815
 816         /*
 817          * We cannot just pass a function to for_each_ref() which deletes
 818          * the branches one by one, since for_each_ref() relies on cached
 819          * refs, which are invalidated when deleting a branch.
 820          */
 821         cb_data.remote = remote;
 822         result = for_each_ref(add_branch_for_removal, &cb_data);
 823         strbuf_release(&buf);
 824
 825         if (!result)
 826                 result = remove_branches(&branches);
 827         string_list_clear(&branches, 1);
 828
 829         if (skipped.nr) {
 830                 fprintf_ln(stderr,
 831                            Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 832                               "to delete it, use:",
 833                               "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 834                               "to delete them, use:",
 835                               skipped.nr));
 836                 for (i = 0; i < skipped.nr; i++)
 837                         fprintf(stderr, "  git branch -d %s\n",
 838                                 skipped.items[i].string);
 839         }
 840         string_list_clear(&skipped, 0);
 841
 842         return result;
 843 }
 844
 845 static void clear_push_info(void *util, const char *string)
 846 {
 847         struct push_info *info = util;
 848         free(info->dest);
 849         free(info);
 850 }
 851
 852 static void free_remote_ref_states(struct ref_states *states)
 853 {
 854         string_list_clear(&states->new, 0);
 855         string_list_clear(&states->stale, 1);
 856         string_list_clear(&states->tracked, 0);
 857         string_list_clear(&states->heads, 0);
 858         string_list_clear_func(&states->push, clear_push_info);
 859 }
 860
 861 static int append_ref_to_tracked_list(const char *refname,
 862         const unsigned char *sha1, int flags, void *cb_data)
 863 {
 864         struct ref_states *states = cb_data;
 865         struct refspec refspec;
 866
 867         if (flags & REF_ISSYMREF)
 868                 return 0;
 869
 870         memset(&refspec, 0, sizeof(refspec));
 871         refspec.dst = (char *)refname;
 872         if (!remote_find_tracking(states->remote, &refspec))
 873                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 874
 875         return 0;
 876 }
 877
 878 static int get_remote_ref_states(const char *name,
 879                                  struct ref_states *states,
 880                                  int query)
 881 {
 882         struct transport *transport;
 883         const struct ref *remote_refs;
 884
 885         states->remote = remote_get(name);
 886         if (!states->remote)
 887                 return error(_("No such remote: %s"), name);
 888
 889         read_branches();
 890
 891         if (query) {
 892                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 893                         states->remote->url[0] : NULL);
 894                 remote_refs = transport_get_remote_refs(transport);
 895                 transport_disconnect(transport);
 896
 897                 states->queried = 1;
 898                 if (query & GET_REF_STATES)
 899                         get_ref_states(remote_refs, states);
 900                 if (query & GET_HEAD_NAMES)
 901                         get_head_names(remote_refs, states);
 902                 if (query & GET_PUSH_REF_STATES)
 903                         get_push_ref_states(remote_refs, states);
 904         } else {
 905                 for_each_ref(append_ref_to_tracked_list, states);
 906                 sort_string_list(&states->tracked);
 907                 get_push_ref_states_noquery(states);
 908         }
 909
 910         return 0;
 911 }
 912
 913 struct show_info {
 914         struct string_list *list;
 915         struct ref_states *states;
 916         int width, width2;
 917         int any_rebase;
 918 };
 919
 920 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 921 {
 922         struct show_info *info = cb_data;
 923         int n = strlen(item->string);
 924         if (n > info->width)
 925                 info->width = n;
 926         string_list_insert(info->list, item->string);
 927         return 0;
 928 }
 929
 930 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 931 {
 932         struct show_info *info = cb_data;
 933         struct ref_states *states = info->states;
 934         const char *name = item->string;
 935
 936         if (states->queried) {
 937                 const char *fmt = "%s";
 938                 const char *arg = "";
 939                 if (string_list_has_string(&states->new, name)) {
 940                         fmt = _(" new (next fetch will store in remotes/%s)");
 941                         arg = states->remote->name;
 942                 } else if (string_list_has_string(&states->tracked, name))
 943                         arg = _(" tracked");
 944                 else if (string_list_has_string(&states->stale, name))
 945                         arg = _(" stale (use 'git remote prune' to remove)");
 946                 else
 947                         arg = _(" ???");
 948                 printf("    %-*s", info->width, name);
 949                 printf(fmt, arg);
 950                 printf("\n");
 951         } else
 952                 printf("    %s\n", name);
 953
 954         return 0;
 955 }
 956
 957 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 958 {
 959         struct show_info *show_info = cb_data;
 960         struct ref_states *states = show_info->states;
 961         struct branch_info *branch_info = branch_item->util;
 962         struct string_list_item *item;
 963         int n;
 964
 965         if (!branch_info->merge.nr || !branch_info->remote_name ||
 966             strcmp(states->remote->name, branch_info->remote_name))
 967                 return 0;
 968         if ((n = strlen(branch_item->string)) > show_info->width)
 969                 show_info->width = n;
 970         if (branch_info->rebase)
 971                 show_info->any_rebase = 1;
 972
 973         item = string_list_insert(show_info->list, branch_item->string);
 974         item->util = branch_info;
 975
 976         return 0;
 977 }
 978
 979 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 980 {
 981         struct show_info *show_info = cb_data;
 982         struct branch_info *branch_info = item->util;
 983         struct string_list *merge = &branch_info->merge;
 984         const char *also;
 985         int i;
 986
 987         if (branch_info->rebase && branch_info->merge.nr > 1) {
 988                 error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
 989                         item->string);
 990                 return 0;
 991         }
 992
 993         printf("    %-*s ", show_info->width, item->string);
 994         if (branch_info->rebase) {
 995                 printf_ln(_("rebases onto remote %s"), merge->items[0].string);
 996                 return 0;
 997         } else if (show_info->any_rebase) {
 998                 printf_ln(_(" merges with remote %s"), merge->items[0].string);
 999                 also = _("    and with remote");
1000         } else {
1001                 printf_ln(_("merges with remote %s"), merge->items[0].string);
1002                 also = _("   and with remote");
1003         }
1004         for (i = 1; i < merge->nr; i++)
1005                 printf("    %-*s %s %s\n", show_info->width, "", also,
1006                        merge->items[i].string);
1007
1008         return 0;
1009 }
1010
1011 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1012 {
1013         struct show_info *show_info = cb_data;
1014         struct push_info *push_info = push_item->util;
1015         struct string_list_item *item;
1016         int n;
1017         if ((n = strlen(push_item->string)) > show_info->width)
1018                 show_info->width = n;
1019         if ((n = strlen(push_info->dest)) > show_info->width2)
1020                 show_info->width2 = n;
1021         item = string_list_append(show_info->list, push_item->string);
1022         item->util = push_item->util;
1023         return 0;
1024 }
1025
1026 /*
1027  * Sorting comparison for a string list that has push_info
1028  * structs in its util field
1029  */
1030 static int cmp_string_with_push(const void *va, const void *vb)
1031 {
1032         const struct string_list_item *a = va;
1033         const struct string_list_item *b = vb;
1034         const struct push_info *a_push = a->util;
1035         const struct push_info *b_push = b->util;
1036         int cmp = strcmp(a->string, b->string);
1037         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1038 }
1039
1040 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1041 {
1042         struct show_info *show_info = cb_data;
1043         struct push_info *push_info = item->util;
1044         const char *src = item->string, *status = NULL;
1045
1046         switch (push_info->status) {
1047         case PUSH_STATUS_CREATE:
1048                 status = _("create");
1049                 break;
1050         case PUSH_STATUS_DELETE:
1051                 status = _("delete");
1052                 src = _("(none)");
1053                 break;
1054         case PUSH_STATUS_UPTODATE:
1055                 status = _("up to date");
1056                 break;
1057         case PUSH_STATUS_FASTFORWARD:
1058                 status = _("fast-forwardable");
1059                 break;
1060         case PUSH_STATUS_OUTOFDATE:
1061                 status = _("local out of date");
1062                 break;
1063         case PUSH_STATUS_NOTQUERIED:
1064                 break;
1065         }
1066         if (status) {
1067                 if (push_info->forced)
1068                         printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
1069                                show_info->width2, push_info->dest, status);
1070                 else
1071                         printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
1072                                show_info->width2, push_info->dest, status);
1073         } else {
1074                 if (push_info->forced)
1075                         printf_ln(_("    %-*s forces to %s"), show_info->width, src,
1076                                push_info->dest);
1077                 else
1078                         printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
1079                                push_info->dest);
1080         }
1081         return 0;
1082 }
1083
1084 static int get_one_entry(struct remote *remote, void *priv)
1085 {
1086         struct string_list *list = priv;
1087         struct strbuf url_buf = STRBUF_INIT;
1088         const char **url;
1089         int i, url_nr;
1090
1091         if (remote->url_nr > 0) {
1092                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1093                 string_list_append(list, remote->name)->util =
1094                                 strbuf_detach(&url_buf, NULL);
1095         } else
1096                 string_list_append(list, remote->name)->util = NULL;
1097         if (remote->pushurl_nr) {
1098                 url = remote->pushurl;
1099                 url_nr = remote->pushurl_nr;
1100         } else {
1101                 url = remote->url;
1102                 url_nr = remote->url_nr;
1103         }
1104         for (i = 0; i < url_nr; i++)
1105         {
1106                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1107                 string_list_append(list, remote->name)->util =
1108                                 strbuf_detach(&url_buf, NULL);
1109         }
1110
1111         return 0;
1112 }
1113
1114 static int show_all(void)
1115 {
1116         struct string_list list = STRING_LIST_INIT_NODUP;
1117         int result;
1118
1119         list.strdup_strings = 1;
1120         result = for_each_remote(get_one_entry, &list);
1121
1122         if (!result) {
1123                 int i;
1124
1125                 sort_string_list(&list);
1126                 for (i = 0; i < list.nr; i++) {
1127                         struct string_list_item *item = list.items + i;
1128                         if (verbose)
1129                                 printf("%s\t%s\n", item->string,
1130                                         item->util ? (const char *)item->util : "");
1131                         else {
1132                                 if (i && !strcmp((item - 1)->string, item->string))
1133                                         continue;
1134                                 printf("%s\n", item->string);
1135                         }
1136                 }
1137         }
1138         string_list_clear(&list, 1);
1139         return result;
1140 }
1141
1142 static int show(int argc, const char **argv)
1143 {
1144         int no_query = 0, result = 0, query_flag = 0;
1145         struct option options[] = {
1146                 OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
1147                 OPT_END()
1148         };
1149         struct ref_states states;
1150         struct string_list info_list = STRING_LIST_INIT_NODUP;
1151         struct show_info info;
1152
1153         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1154                              0);
1155
1156         if (argc < 1)
1157                 return show_all();
1158
1159         if (!no_query)
1160                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1161
1162         memset(&states, 0, sizeof(states));
1163         memset(&info, 0, sizeof(info));
1164         info.states = &states;
1165         info.list = &info_list;
1166         for (; argc; argc--, argv++) {
1167                 int i;
1168                 const char **url;
1169                 int url_nr;
1170
1171                 get_remote_ref_states(*argv, &states, query_flag);
1172
1173                 printf_ln(_("* remote %s"), *argv);
1174                 printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
1175                        states.remote->url[0] : _("(no URL)"));
1176                 if (states.remote->pushurl_nr) {
1177                         url = states.remote->pushurl;
1178                         url_nr = states.remote->pushurl_nr;
1179                 } else {
1180                         url = states.remote->url;
1181                         url_nr = states.remote->url_nr;
1182                 }
1183                 for (i = 0; i < url_nr; i++)
1184                         printf_ln(_("  Push  URL: %s"), url[i]);
1185                 if (!i)
1186                         printf_ln(_("  Push  URL: %s"), "(no URL)");
1187                 if (no_query)
1188                         printf_ln(_("  HEAD branch: %s"), "(not queried)");
1189                 else if (!states.heads.nr)
1190                         printf_ln(_("  HEAD branch: %s"), "(unknown)");
1191                 else if (states.heads.nr == 1)
1192                         printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
1193                 else {
1194                         printf(_("  HEAD branch (remote HEAD is ambiguous,"
1195                                  " may be one of the following):\n"));
1196                         for (i = 0; i < states.heads.nr; i++)
1197                                 printf("    %s\n", states.heads.items[i].string);
1198                 }
1199
1200                 /* remote branch info */
1201                 info.width = 0;
1202                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1203                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1204                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1205                 if (info.list->nr)
1206                         printf_ln(Q_("  Remote branch:%s",
1207                                      "  Remote branches:%s",
1208                                      info.list->nr),
1209                                   no_query ? _(" (status not queried)") : "");
1210                 for_each_string_list(info.list, show_remote_info_item, &info);
1211                 string_list_clear(info.list, 0);
1212
1213                 /* git pull info */
1214                 info.width = 0;
1215                 info.any_rebase = 0;
1216                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1217                 if (info.list->nr)
1218                         printf_ln(Q_("  Local branch configured for 'git pull':",
1219                                      "  Local branches configured for 'git pull':",
1220                                      info.list->nr));
1221                 for_each_string_list(info.list, show_local_info_item, &info);
1222                 string_list_clear(info.list, 0);
1223
1224                 /* git push info */
1225                 if (states.remote->mirror)
1226                         printf_ln(_("  Local refs will be mirrored by 'git push'"));
1227
1228                 info.width = info.width2 = 0;
1229                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1230                 qsort(info.list->items, info.list->nr,
1231                         sizeof(*info.list->items), cmp_string_with_push);
1232                 if (info.list->nr)
1233                         printf_ln(Q_("  Local ref configured for 'git push'%s:",
1234                                      "  Local refs configured for 'git push'%s:",
1235                                      info.list->nr),
1236                                   no_query ? _(" (status not queried)") : "");
1237                 for_each_string_list(info.list, show_push_info_item, &info);
1238                 string_list_clear(info.list, 0);
1239
1240                 free_remote_ref_states(&states);
1241         }
1242
1243         return result;
1244 }
1245
1246 static int set_head(int argc, const char **argv)
1247 {
1248         int i, opt_a = 0, opt_d = 0, result = 0;
1249         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1250         char *head_name = NULL;
1251
1252         struct option options[] = {
1253                 OPT_BOOL('a', "auto", &opt_a,
1254                          N_("set refs/remotes/<name>/HEAD according to remote")),
1255                 OPT_BOOL('d', "delete", &opt_d,
1256                          N_("delete refs/remotes/<name>/HEAD")),
1257                 OPT_END()
1258         };
1259         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1260                              0);
1261         if (argc)
1262                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1263
1264         if (!opt_a && !opt_d && argc == 2) {
1265                 head_name = xstrdup(argv[1]);
1266         } else if (opt_a && !opt_d && argc == 1) {
1267                 struct ref_states states;
1268                 memset(&states, 0, sizeof(states));
1269                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1270                 if (!states.heads.nr)
1271                         result |= error(_("Cannot determine remote HEAD"));
1272                 else if (states.heads.nr > 1) {
1273                         result |= error(_("Multiple remote HEAD branches. "
1274                                           "Please choose one explicitly with:"));
1275                         for (i = 0; i < states.heads.nr; i++)
1276                                 fprintf(stderr, "  git remote set-head %s %s\n",
1277                                         argv[0], states.heads.items[i].string);
1278                 } else
1279                         head_name = xstrdup(states.heads.items[0].string);
1280                 free_remote_ref_states(&states);
1281         } else if (opt_d && !opt_a && argc == 1) {
1282                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1283                         result |= error(_("Could not delete %s"), buf.buf);
1284         } else
1285                 usage_with_options(builtin_remote_sethead_usage, options);
1286
1287         if (head_name) {
1288                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1289                 /* make sure it's valid */
1290                 if (!ref_exists(buf2.buf))
1291                         result |= error(_("Not a valid ref: %s"), buf2.buf);
1292                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1293                         result |= error(_("Could not setup %s"), buf.buf);
1294                 if (opt_a)
1295                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1296                 free(head_name);
1297         }
1298
1299         strbuf_release(&buf);
1300         strbuf_release(&buf2);
1301         return result;
1302 }
1303
1304 static int prune_remote(const char *remote, int dry_run)
1305 {
1306         int result = 0, i;
1307         struct ref_states states;
1308         const char *dangling_msg = dry_run
1309                 ? _(" %s will become dangling!")
1310                 : _(" %s has become dangling!");
1311
1312         memset(&states, 0, sizeof(states));
1313         get_remote_ref_states(remote, &states, GET_REF_STATES);
1314
1315         if (states.stale.nr) {
1316                 printf_ln(_("Pruning %s"), remote);
1317                 printf_ln(_("URL: %s"),
1318                        states.remote->url_nr
1319                        ? states.remote->url[0]
1320                        : _("(no URL)"));
1321         }
1322
1323         for (i = 0; i < states.stale.nr; i++) {
1324                 const char *refname = states.stale.items[i].util;
1325
1326                 if (!dry_run)
1327                         result |= delete_ref(refname, NULL, 0);
1328
1329                 if (dry_run)
1330                         printf_ln(_(" * [would prune] %s"),
1331                                abbrev_ref(refname, "refs/remotes/"));
1332                 else
1333                         printf_ln(_(" * [pruned] %s"),
1334                                abbrev_ref(refname, "refs/remotes/"));
1335                 warn_dangling_symref(stdout, dangling_msg, refname);
1336         }
1337
1338         free_remote_ref_states(&states);
1339         return result;
1340 }
1341
1342 static int prune(int argc, const char **argv)
1343 {
1344         int dry_run = 0, result = 0;
1345         struct option options[] = {
1346                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1347                 OPT_END()
1348         };
1349
1350         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1351                              0);
1352
1353         if (argc < 1)
1354                 usage_with_options(builtin_remote_prune_usage, options);
1355
1356         for (; argc; argc--, argv++)
1357                 result |= prune_remote(*argv, dry_run);
1358
1359         return result;
1360 }
1361
1362 static int get_remote_default(const char *key, const char *value, void *priv)
1363 {
1364         if (strcmp(key, "remotes.default") == 0) {
1365                 int *found = priv;
1366                 *found = 1;
1367         }
1368         return 0;
1369 }
1370
1371 static int update(int argc, const char **argv)
1372 {
1373         int i, prune = 0;
1374         struct option options[] = {
1375                 OPT_BOOL('p', "prune", &prune,
1376                          N_("prune remotes after fetching")),
1377                 OPT_END()
1378         };
1379         const char **fetch_argv;
1380         int fetch_argc = 0;
1381         int default_defined = 0;
1382
1383         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1384
1385         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1386                              PARSE_OPT_KEEP_ARGV0);
1387
1388         fetch_argv[fetch_argc++] = "fetch";
1389
1390         if (prune)
1391                 fetch_argv[fetch_argc++] = "--prune";
1392         if (verbose)
1393                 fetch_argv[fetch_argc++] = "-v";
1394         fetch_argv[fetch_argc++] = "--multiple";
1395         if (argc < 2)
1396                 fetch_argv[fetch_argc++] = "default";
1397         for (i = 1; i < argc; i++)
1398                 fetch_argv[fetch_argc++] = argv[i];
1399
1400         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1401                 git_config(get_remote_default, &default_defined);
1402                 if (!default_defined)
1403                         fetch_argv[fetch_argc-1] = "--all";
1404         }
1405
1406         fetch_argv[fetch_argc] = NULL;
1407
1408         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1409 }
1410
1411 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1412 {
1413         return git_config_set_multivar(key, NULL, NULL, 1);
1414 }
1415
1416 static int add_branches(struct remote *remote, const char **branches,
1417                         const char *key)
1418 {
1419         const char *remotename = remote->name;
1420         int mirror = remote->mirror;
1421         struct strbuf refspec = STRBUF_INIT;
1422
1423         for (; *branches; branches++)
1424                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1425                         strbuf_release(&refspec);
1426                         return 1;
1427                 }
1428
1429         strbuf_release(&refspec);
1430         return 0;
1431 }
1432
1433 static int set_remote_branches(const char *remotename, const char **branches,
1434                                 int add_mode)
1435 {
1436         struct strbuf key = STRBUF_INIT;
1437         struct remote *remote;
1438
1439         strbuf_addf(&key, "remote.%s.fetch", remotename);
1440
1441         if (!remote_is_configured(remotename))
1442                 die(_("No such remote '%s'"), remotename);
1443         remote = remote_get(remotename);
1444
1445         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1446                 strbuf_release(&key);
1447                 return 1;
1448         }
1449         if (add_branches(remote, branches, key.buf)) {
1450                 strbuf_release(&key);
1451                 return 1;
1452         }
1453
1454         strbuf_release(&key);
1455         return 0;
1456 }
1457
1458 static int set_branches(int argc, const char **argv)
1459 {
1460         int add_mode = 0;
1461         struct option options[] = {
1462                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1463                 OPT_END()
1464         };
1465
1466         argc = parse_options(argc, argv, NULL, options,
1467                              builtin_remote_setbranches_usage, 0);
1468         if (argc == 0) {
1469                 error(_("no remote specified"));
1470                 usage_with_options(builtin_remote_setbranches_usage, options);
1471         }
1472         argv[argc] = NULL;
1473
1474         return set_remote_branches(argv[0], argv + 1, add_mode);
1475 }
1476
1477 static int set_url(int argc, const char **argv)
1478 {
1479         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1480         int matches = 0, negative_matches = 0;
1481         const char *remotename = NULL;
1482         const char *newurl = NULL;
1483         const char *oldurl = NULL;
1484         struct remote *remote;
1485         regex_t old_regex;
1486         const char **urlset;
1487         int urlset_nr;
1488         struct strbuf name_buf = STRBUF_INIT;
1489         struct option options[] = {
1490                 OPT_BOOL('\0', "push", &push_mode,
1491                          N_("manipulate push URLs")),
1492                 OPT_BOOL('\0', "add", &add_mode,
1493                          N_("add URL")),
1494                 OPT_BOOL('\0', "delete", &delete_mode,
1495                             N_("delete URLs")),
1496                 OPT_END()
1497         };
1498         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1499                              PARSE_OPT_KEEP_ARGV0);
1500
1501         if (add_mode && delete_mode)
1502                 die(_("--add --delete doesn't make sense"));
1503
1504         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1505                 usage_with_options(builtin_remote_seturl_usage, options);
1506
1507         remotename = argv[1];
1508         newurl = argv[2];
1509         if (argc > 3)
1510                 oldurl = argv[3];
1511
1512         if (delete_mode)
1513                 oldurl = newurl;
1514
1515         if (!remote_is_configured(remotename))
1516                 die(_("No such remote '%s'"), remotename);
1517         remote = remote_get(remotename);
1518
1519         if (push_mode) {
1520                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1521                 urlset = remote->pushurl;
1522                 urlset_nr = remote->pushurl_nr;
1523         } else {
1524                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1525                 urlset = remote->url;
1526                 urlset_nr = remote->url_nr;
1527         }
1528
1529         /* Special cases that add new entry. */
1530         if ((!oldurl && !delete_mode) || add_mode) {
1531                 if (add_mode)
1532                         git_config_set_multivar(name_buf.buf, newurl,
1533                                 "^$", 0);
1534                 else
1535                         git_config_set(name_buf.buf, newurl);
1536                 strbuf_release(&name_buf);
1537                 return 0;
1538         }
1539
1540         /* Old URL specified. Demand that one matches. */
1541         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1542                 die(_("Invalid old URL pattern: %s"), oldurl);
1543
1544         for (i = 0; i < urlset_nr; i++)
1545                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1546                         matches++;
1547                 else
1548                         negative_matches++;
1549         if (!delete_mode && !matches)
1550                 die(_("No such URL found: %s"), oldurl);
1551         if (delete_mode && !negative_matches && !push_mode)
1552                 die(_("Will not delete all non-push URLs"));
1553
1554         regfree(&old_regex);
1555
1556         if (!delete_mode)
1557                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1558         else
1559                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1560         return 0;
1561 }
1562
1563 int cmd_remote(int argc, const char **argv, const char *prefix)
1564 {
1565         struct option options[] = {
1566                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1567                 OPT_END()
1568         };
1569         int result;
1570
1571         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1572                 PARSE_OPT_STOP_AT_NON_OPTION);
1573
1574         if (argc < 1)
1575                 result = show_all();
1576         else if (!strcmp(argv[0], "add"))
1577                 result = add(argc, argv);
1578         else if (!strcmp(argv[0], "rename"))
1579                 result = mv(argc, argv);
1580         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1581                 result = rm(argc, argv);
1582         else if (!strcmp(argv[0], "set-head"))
1583                 result = set_head(argc, argv);
1584         else if (!strcmp(argv[0], "set-branches"))
1585                 result = set_branches(argc, argv);
1586         else if (!strcmp(argv[0], "set-url"))
1587                 result = set_url(argc, argv);
1588         else if (!strcmp(argv[0], "show"))
1589                 result = show(argc, argv);
1590         else if (!strcmp(argv[0], "prune"))
1591                 result = prune(argc, argv);
1592         else if (!strcmp(argv[0], "update"))
1593                 result = update(argc, argv);
1594         else {
1595                 error(_("Unknown subcommand: %s"), argv[0]);
1596                 usage_with_options(builtin_remote_usage, options);
1597         }
1598
1599         return result ? 1 : 0;
1600 }