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 int fetch_remote(const char *name)
  82 {
  83         const char *argv[] = { "fetch", name, NULL, NULL };
  84         if (verbose) {
  85                 argv[1] = "-v";
  86                 argv[2] = name;
  87         }
  88         printf_ln(_("Updating %s"), name);
  89         if (run_command_v_opt(argv, RUN_GIT_CMD))
  90                 return error(_("Could not fetch %s"), name);
  91         return 0;
  92 }
  93
  94 enum {
  95         TAGS_UNSET = 0,
  96         TAGS_DEFAULT = 1,
  97         TAGS_SET = 2
  98 };
  99
 100 #define MIRROR_NONE 0
 101 #define MIRROR_FETCH 1
 102 #define MIRROR_PUSH 2
 103 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 104
 105 static int add_branch(const char *key, const char *branchname,
 106                 const char *remotename, int mirror, struct strbuf *tmp)
 107 {
 108         strbuf_reset(tmp);
 109         strbuf_addch(tmp, '+');
 110         if (mirror)
 111                 strbuf_addf(tmp, "refs/%s:refs/%s",
 112                                 branchname, branchname);
 113         else
 114                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 115                                 branchname, remotename, branchname);
 116         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 117 }
 118
 119 static const char mirror_advice[] =
 120 N_("--mirror is dangerous and deprecated; please\n"
 121    "\t use --mirror=fetch or --mirror=push instead");
 122
 123 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 124 {
 125         unsigned *mirror = opt->value;
 126         if (not)
 127                 *mirror = MIRROR_NONE;
 128         else if (!arg) {
 129                 warning("%s", _(mirror_advice));
 130                 *mirror = MIRROR_BOTH;
 131         }
 132         else if (!strcmp(arg, "fetch"))
 133                 *mirror = MIRROR_FETCH;
 134         else if (!strcmp(arg, "push"))
 135                 *mirror = MIRROR_PUSH;
 136         else
 137                 return error(_("unknown mirror argument: %s"), arg);
 138         return 0;
 139 }
 140
 141 static int add(int argc, const char **argv)
 142 {
 143         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 144         unsigned mirror = MIRROR_NONE;
 145         struct string_list track = STRING_LIST_INIT_NODUP;
 146         const char *master = NULL;
 147         struct remote *remote;
 148         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 149         const char *name, *url;
 150         int i;
 151
 152         struct option options[] = {
 153                 OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
 154                 OPT_SET_INT(0, "tags", &fetch_tags,
 155                             N_("import all tags and associated objects when fetching"),
 156                             TAGS_SET),
 157                 OPT_SET_INT(0, NULL, &fetch_tags,
 158                             N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
 159                 OPT_STRING_LIST('t', "track", &track, N_("branch"),
 160                                 N_("branch(es) to track")),
 161                 OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
 162                 { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
 163                         N_("set up remote as a mirror to push to or fetch from"),
 164                         PARSE_OPT_OPTARG, parse_mirror_opt },
 165                 OPT_END()
 166         };
 167
 168         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 169                              0);
 170
 171         if (argc != 2)
 172                 usage_with_options(builtin_remote_add_usage, options);
 173
 174         if (mirror && master)
 175                 die(_("specifying a master branch makes no sense with --mirror"));
 176         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 177                 die(_("specifying branches to track makes sense only with fetch mirrors"));
 178
 179         name = argv[0];
 180         url = argv[1];
 181
 182         remote = remote_get(name);
 183         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 184                         remote->fetch_refspec_nr))
 185                 die(_("remote %s already exists."), name);
 186
 187         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 188         if (!valid_fetch_refspec(buf2.buf))
 189                 die(_("'%s' is not a valid remote name"), name);
 190
 191         strbuf_addf(&buf, "remote.%s.url", name);
 192         if (git_config_set(buf.buf, url))
 193                 return 1;
 194
 195         if (!mirror || mirror & MIRROR_FETCH) {
 196                 strbuf_reset(&buf);
 197                 strbuf_addf(&buf, "remote.%s.fetch", name);
 198                 if (track.nr == 0)
 199                         string_list_append(&track, "*");
 200                 for (i = 0; i < track.nr; i++) {
 201                         if (add_branch(buf.buf, track.items[i].string,
 202                                        name, mirror, &buf2))
 203                                 return 1;
 204                 }
 205         }
 206
 207         if (mirror & MIRROR_PUSH) {
 208                 strbuf_reset(&buf);
 209                 strbuf_addf(&buf, "remote.%s.mirror", name);
 210                 if (git_config_set(buf.buf, "true"))
 211                         return 1;
 212         }
 213
 214         if (fetch_tags != TAGS_DEFAULT) {
 215                 strbuf_reset(&buf);
 216                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 217                 if (git_config_set(buf.buf,
 218                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 219                         return 1;
 220         }
 221
 222         if (fetch && fetch_remote(name))
 223                 return 1;
 224
 225         if (master) {
 226                 strbuf_reset(&buf);
 227                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 228
 229                 strbuf_reset(&buf2);
 230                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 231
 232                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 233                         return error(_("Could not setup master '%s'"), master);
 234         }
 235
 236         strbuf_release(&buf);
 237         strbuf_release(&buf2);
 238         string_list_clear(&track, 0);
 239
 240         return 0;
 241 }
 242
 243 struct branch_info {
 244         char *remote_name;
 245         struct string_list merge;
 246         int rebase;
 247 };
 248
 249 static struct string_list branch_list;
 250
 251 static const char *abbrev_ref(const char *name, const char *prefix)
 252 {
 253         skip_prefix(name, prefix, &name);
 254         return name;
 255 }
 256 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 257
 258 static int config_read_branches(const char *key, const char *value, void *cb)
 259 {
 260         if (starts_with(key, "branch.")) {
 261                 const char *orig_key = key;
 262                 char *name;
 263                 struct string_list_item *item;
 264                 struct branch_info *info;
 265                 enum { REMOTE, MERGE, REBASE } type;
 266
 267                 key += 7;
 268                 if (ends_with(key, ".remote")) {
 269                         name = xstrndup(key, strlen(key) - 7);
 270                         type = REMOTE;
 271                 } else if (ends_with(key, ".merge")) {
 272                         name = xstrndup(key, strlen(key) - 6);
 273                         type = MERGE;
 274                 } else if (ends_with(key, ".rebase")) {
 275                         name = xstrndup(key, strlen(key) - 7);
 276                         type = REBASE;
 277                 } else
 278                         return 0;
 279
 280                 item = string_list_insert(&branch_list, name);
 281
 282                 if (!item->util)
 283                         item->util = xcalloc(1, sizeof(struct branch_info));
 284                 info = item->util;
 285                 if (type == REMOTE) {
 286                         if (info->remote_name)
 287                                 warning(_("more than one %s"), orig_key);
 288                         info->remote_name = xstrdup(value);
 289                 } else if (type == MERGE) {
 290                         char *space = strchr(value, ' ');
 291                         value = abbrev_branch(value);
 292                         while (space) {
 293                                 char *merge;
 294                                 merge = xstrndup(value, space - value);
 295                                 string_list_append(&info->merge, merge);
 296                                 value = abbrev_branch(space + 1);
 297                                 space = strchr(value, ' ');
 298                         }
 299                         string_list_append(&info->merge, xstrdup(value));
 300                 } else {
 301                         int v = git_config_maybe_bool(orig_key, value);
 302                         if (v >= 0)
 303                                 info->rebase = v;
 304                         else if (!strcmp(value, "preserve"))
 305                                 info->rebase = 1;
 306                 }
 307         }
 308         return 0;
 309 }
 310
 311 static void read_branches(void)
 312 {
 313         if (branch_list.nr)
 314                 return;
 315         git_config(config_read_branches, NULL);
 316 }
 317
 318 struct ref_states {
 319         struct remote *remote;
 320         struct string_list new, stale, tracked, heads, push;
 321         int queried;
 322 };
 323
 324 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 325 {
 326         struct ref *fetch_map = NULL, **tail = &fetch_map;
 327         struct ref *ref, *stale_refs;
 328         int i;
 329
 330         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 331                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 332                         die(_("Could not get fetch map for refspec %s"),
 333                                 states->remote->fetch_refspec[i]);
 334
 335         states->new.strdup_strings = 1;
 336         states->tracked.strdup_strings = 1;
 337         states->stale.strdup_strings = 1;
 338         for (ref = fetch_map; ref; ref = ref->next) {
 339                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 340                         string_list_append(&states->new, abbrev_branch(ref->name));
 341                 else
 342                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 343         }
 344         stale_refs = get_stale_heads(states->remote->fetch,
 345                                      states->remote->fetch_refspec_nr, fetch_map);
 346         for (ref = stale_refs; ref; ref = ref->next) {
 347                 struct string_list_item *item =
 348                         string_list_append(&states->stale, abbrev_branch(ref->name));
 349                 item->util = xstrdup(ref->name);
 350         }
 351         free_refs(stale_refs);
 352         free_refs(fetch_map);
 353
 354         sort_string_list(&states->new);
 355         sort_string_list(&states->tracked);
 356         sort_string_list(&states->stale);
 357
 358         return 0;
 359 }
 360
 361 struct push_info {
 362         char *dest;
 363         int forced;
 364         enum {
 365                 PUSH_STATUS_CREATE = 0,
 366                 PUSH_STATUS_DELETE,
 367                 PUSH_STATUS_UPTODATE,
 368                 PUSH_STATUS_FASTFORWARD,
 369                 PUSH_STATUS_OUTOFDATE,
 370                 PUSH_STATUS_NOTQUERIED
 371         } status;
 372 };
 373
 374 static int get_push_ref_states(const struct ref *remote_refs,
 375         struct ref_states *states)
 376 {
 377         struct remote *remote = states->remote;
 378         struct ref *ref, *local_refs, *push_map;
 379         if (remote->mirror)
 380                 return 0;
 381
 382         local_refs = get_local_heads();
 383         push_map = copy_ref_list(remote_refs);
 384
 385         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 386                         remote->push_refspec, MATCH_REFS_NONE);
 387
 388         states->push.strdup_strings = 1;
 389         for (ref = push_map; ref; ref = ref->next) {
 390                 struct string_list_item *item;
 391                 struct push_info *info;
 392
 393                 if (!ref->peer_ref)
 394                         continue;
 395                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 396
 397                 item = string_list_append(&states->push,
 398                                           abbrev_branch(ref->peer_ref->name));
 399                 item->util = xcalloc(1, sizeof(struct push_info));
 400                 info = item->util;
 401                 info->forced = ref->force;
 402                 info->dest = xstrdup(abbrev_branch(ref->name));
 403
 404                 if (is_null_sha1(ref->new_sha1)) {
 405                         info->status = PUSH_STATUS_DELETE;
 406                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 407                         info->status = PUSH_STATUS_UPTODATE;
 408                 else if (is_null_sha1(ref->old_sha1))
 409                         info->status = PUSH_STATUS_CREATE;
 410                 else if (has_sha1_file(ref->old_sha1) &&
 411                          ref_newer(ref->new_sha1, ref->old_sha1))
 412                         info->status = PUSH_STATUS_FASTFORWARD;
 413                 else
 414                         info->status = PUSH_STATUS_OUTOFDATE;
 415         }
 416         free_refs(local_refs);
 417         free_refs(push_map);
 418         return 0;
 419 }
 420
 421 static int get_push_ref_states_noquery(struct ref_states *states)
 422 {
 423         int i;
 424         struct remote *remote = states->remote;
 425         struct string_list_item *item;
 426         struct push_info *info;
 427
 428         if (remote->mirror)
 429                 return 0;
 430
 431         states->push.strdup_strings = 1;
 432         if (!remote->push_refspec_nr) {
 433                 item = string_list_append(&states->push, _("(matching)"));
 434                 info = item->util = xcalloc(1, sizeof(struct push_info));
 435                 info->status = PUSH_STATUS_NOTQUERIED;
 436                 info->dest = xstrdup(item->string);
 437         }
 438         for (i = 0; i < remote->push_refspec_nr; i++) {
 439                 struct refspec *spec = remote->push + i;
 440                 if (spec->matching)
 441                         item = string_list_append(&states->push, _("(matching)"));
 442                 else if (strlen(spec->src))
 443                         item = string_list_append(&states->push, spec->src);
 444                 else
 445                         item = string_list_append(&states->push, _("(delete)"));
 446
 447                 info = item->util = xcalloc(1, sizeof(struct push_info));
 448                 info->forced = spec->force;
 449                 info->status = PUSH_STATUS_NOTQUERIED;
 450                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 451         }
 452         return 0;
 453 }
 454
 455 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 456 {
 457         struct ref *ref, *matches;
 458         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 459         struct refspec refspec;
 460
 461         refspec.force = 0;
 462         refspec.pattern = 1;
 463         refspec.src = refspec.dst = "refs/heads/*";
 464         states->heads.strdup_strings = 1;
 465         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 466         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 467                                     fetch_map, 1);
 468         for (ref = matches; ref; ref = ref->next)
 469                 string_list_append(&states->heads, abbrev_branch(ref->name));
 470
 471         free_refs(fetch_map);
 472         free_refs(matches);
 473
 474         return 0;
 475 }
 476
 477 struct known_remote {
 478         struct known_remote *next;
 479         struct remote *remote;
 480 };
 481
 482 struct known_remotes {
 483         struct remote *to_delete;
 484         struct known_remote *list;
 485 };
 486
 487 static int add_known_remote(struct remote *remote, void *cb_data)
 488 {
 489         struct known_remotes *all = cb_data;
 490         struct known_remote *r;
 491
 492         if (!strcmp(all->to_delete->name, remote->name))
 493                 return 0;
 494
 495         r = xmalloc(sizeof(*r));
 496         r->remote = remote;
 497         r->next = all->list;
 498         all->list = r;
 499         return 0;
 500 }
 501
 502 struct branches_for_remote {
 503         struct remote *remote;
 504         struct string_list *branches, *skipped;
 505         struct known_remotes *keep;
 506 };
 507
 508 static int add_branch_for_removal(const char *refname,
 509         const unsigned char *sha1, int flags, void *cb_data)
 510 {
 511         struct branches_for_remote *branches = cb_data;
 512         struct refspec refspec;
 513         struct string_list_item *item;
 514         struct known_remote *kr;
 515
 516         memset(&refspec, 0, sizeof(refspec));
 517         refspec.dst = (char *)refname;
 518         if (remote_find_tracking(branches->remote, &refspec))
 519                 return 0;
 520
 521         /* don't delete a branch if another remote also uses it */
 522         for (kr = branches->keep->list; kr; kr = kr->next) {
 523                 memset(&refspec, 0, sizeof(refspec));
 524                 refspec.dst = (char *)refname;
 525                 if (!remote_find_tracking(kr->remote, &refspec))
 526                         return 0;
 527         }
 528
 529         /* don't delete non-remote-tracking refs */
 530         if (!starts_with(refname, "refs/remotes/")) {
 531                 /* advise user how to delete local branches */
 532                 if (starts_with(refname, "refs/heads/"))
 533                         string_list_append(branches->skipped,
 534                                            abbrev_branch(refname));
 535                 /* silently skip over other non-remote refs */
 536                 return 0;
 537         }
 538
 539         /* make sure that symrefs are deleted */
 540         if (flags & REF_ISSYMREF)
 541                 return unlink(git_path("%s", refname));
 542
 543         item = string_list_append(branches->branches, refname);
 544         item->util = xmalloc(20);
 545         hashcpy(item->util, sha1);
 546
 547         return 0;
 548 }
 549
 550 struct rename_info {
 551         const char *old;
 552         const char *new;
 553         struct string_list *remote_branches;
 554 };
 555
 556 static int read_remote_branches(const char *refname,
 557         const unsigned char *sha1, int flags, void *cb_data)
 558 {
 559         struct rename_info *rename = cb_data;
 560         struct strbuf buf = STRBUF_INIT;
 561         struct string_list_item *item;
 562         int flag;
 563         unsigned char orig_sha1[20];
 564         const char *symref;
 565
 566         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 567         if (starts_with(refname, buf.buf)) {
 568                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 569                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
 570                 if (flag & REF_ISSYMREF)
 571                         item->util = xstrdup(symref);
 572                 else
 573                         item->util = NULL;
 574         }
 575
 576         return 0;
 577 }
 578
 579 static int migrate_file(struct remote *remote)
 580 {
 581         struct strbuf buf = STRBUF_INIT;
 582         int i;
 583         char *path = NULL;
 584
 585         strbuf_addf(&buf, "remote.%s.url", remote->name);
 586         for (i = 0; i < remote->url_nr; i++)
 587                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 588                         return error(_("Could not append '%s' to '%s'"),
 589                                         remote->url[i], buf.buf);
 590         strbuf_reset(&buf);
 591         strbuf_addf(&buf, "remote.%s.push", remote->name);
 592         for (i = 0; i < remote->push_refspec_nr; i++)
 593                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 594                         return error(_("Could not append '%s' to '%s'"),
 595                                         remote->push_refspec[i], buf.buf);
 596         strbuf_reset(&buf);
 597         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 598         for (i = 0; i < remote->fetch_refspec_nr; i++)
 599                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 600                         return error(_("Could not append '%s' to '%s'"),
 601                                         remote->fetch_refspec[i], buf.buf);
 602         if (remote->origin == REMOTE_REMOTES)
 603                 path = git_path("remotes/%s", remote->name);
 604         else if (remote->origin == REMOTE_BRANCHES)
 605                 path = git_path("branches/%s", remote->name);
 606         if (path)
 607                 unlink_or_warn(path);
 608         return 0;
 609 }
 610
 611 static int mv(int argc, const char **argv)
 612 {
 613         struct option options[] = {
 614                 OPT_END()
 615         };
 616         struct remote *oldremote, *newremote;
 617         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 618                 old_remote_context = STRBUF_INIT;
 619         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 620         struct rename_info rename;
 621         int i, refspec_updated = 0;
 622
 623         if (argc != 3)
 624                 usage_with_options(builtin_remote_rename_usage, options);
 625
 626         rename.old = argv[1];
 627         rename.new = argv[2];
 628         rename.remote_branches = &remote_branches;
 629
 630         oldremote = remote_get(rename.old);
 631         if (!oldremote)
 632                 die(_("No such remote: %s"), rename.old);
 633
 634         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 635                 return migrate_file(oldremote);
 636
 637         newremote = remote_get(rename.new);
 638         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 639                 die(_("remote %s already exists."), rename.new);
 640
 641         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 642         if (!valid_fetch_refspec(buf.buf))
 643                 die(_("'%s' is not a valid remote name"), rename.new);
 644
 645         strbuf_reset(&buf);
 646         strbuf_addf(&buf, "remote.%s", rename.old);
 647         strbuf_addf(&buf2, "remote.%s", rename.new);
 648         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 649                 return error(_("Could not rename config section '%s' to '%s'"),
 650                                 buf.buf, buf2.buf);
 651
 652         strbuf_reset(&buf);
 653         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 654         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 655                 return error(_("Could not remove config section '%s'"), buf.buf);
 656         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 657         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 658                 char *ptr;
 659
 660                 strbuf_reset(&buf2);
 661                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 662                 ptr = strstr(buf2.buf, old_remote_context.buf);
 663                 if (ptr) {
 664                         refspec_updated = 1;
 665                         strbuf_splice(&buf2,
 666                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 667                                       strlen(rename.old), rename.new,
 668                                       strlen(rename.new));
 669                 } else
 670                         warning(_("Not updating non-default fetch refspec\n"
 671                                   "\t%s\n"
 672                                   "\tPlease update the configuration manually if necessary."),
 673                                 buf2.buf);
 674
 675                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 676                         return error(_("Could not append '%s'"), buf.buf);
 677         }
 678
 679         read_branches();
 680         for (i = 0; i < branch_list.nr; i++) {
 681                 struct string_list_item *item = branch_list.items + i;
 682                 struct branch_info *info = item->util;
 683                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 684                         strbuf_reset(&buf);
 685                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 686                         if (git_config_set(buf.buf, rename.new)) {
 687                                 return error(_("Could not set '%s'"), buf.buf);
 688                         }
 689                 }
 690         }
 691
 692         if (!refspec_updated)
 693                 return 0;
 694
 695         /*
 696          * First remove symrefs, then rename the rest, finally create
 697          * the new symrefs.
 698          */
 699         for_each_ref(read_remote_branches, &rename);
 700         for (i = 0; i < remote_branches.nr; i++) {
 701                 struct string_list_item *item = remote_branches.items + i;
 702                 int flag = 0;
 703                 unsigned char sha1[20];
 704
 705                 read_ref_full(item->string, sha1, 1, &flag);
 706                 if (!(flag & REF_ISSYMREF))
 707                         continue;
 708                 if (delete_ref(item->string, NULL, REF_NODEREF))
 709                         die(_("deleting '%s' failed"), item->string);
 710         }
 711         for (i = 0; i < remote_branches.nr; i++) {
 712                 struct string_list_item *item = remote_branches.items + i;
 713
 714                 if (item->util)
 715                         continue;
 716                 strbuf_reset(&buf);
 717                 strbuf_addstr(&buf, item->string);
 718                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 719                                 rename.new, strlen(rename.new));
 720                 strbuf_reset(&buf2);
 721                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 722                                 item->string, buf.buf);
 723                 if (rename_ref(item->string, buf.buf, buf2.buf))
 724                         die(_("renaming '%s' failed"), item->string);
 725         }
 726         for (i = 0; i < remote_branches.nr; i++) {
 727                 struct string_list_item *item = remote_branches.items + i;
 728
 729                 if (!item->util)
 730                         continue;
 731                 strbuf_reset(&buf);
 732                 strbuf_addstr(&buf, item->string);
 733                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 734                                 rename.new, strlen(rename.new));
 735                 strbuf_reset(&buf2);
 736                 strbuf_addstr(&buf2, item->util);
 737                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 738                                 rename.new, strlen(rename.new));
 739                 strbuf_reset(&buf3);
 740                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 741                                 item->string, buf.buf);
 742                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 743                         die(_("creating '%s' failed"), buf.buf);
 744         }
 745         return 0;
 746 }
 747
 748 static int remove_branches(struct string_list *branches)
 749 {
 750         const char **branch_names;
 751         int i, result = 0;
 752
 753         branch_names = xmalloc(branches->nr * sizeof(*branch_names));
 754         for (i = 0; i < branches->nr; i++)
 755                 branch_names[i] = branches->items[i].string;
 756         result |= repack_without_refs(branch_names, branches->nr);
 757         free(branch_names);
 758
 759         for (i = 0; i < branches->nr; i++) {
 760                 struct string_list_item *item = branches->items + i;
 761                 const char *refname = item->string;
 762
 763                 if (delete_ref(refname, NULL, 0))
 764                         result |= error(_("Could not remove branch %s"), refname);
 765         }
 766
 767         return result;
 768 }
 769
 770 static int rm(int argc, const char **argv)
 771 {
 772         struct option options[] = {
 773                 OPT_END()
 774         };
 775         struct remote *remote;
 776         struct strbuf buf = STRBUF_INIT;
 777         struct known_remotes known_remotes = { NULL, NULL };
 778         struct string_list branches = STRING_LIST_INIT_DUP;
 779         struct string_list skipped = STRING_LIST_INIT_DUP;
 780         struct branches_for_remote cb_data;
 781         int i, result;
 782
 783         memset(&cb_data, 0, sizeof(cb_data));
 784         cb_data.branches = &branches;
 785         cb_data.skipped = &skipped;
 786         cb_data.keep = &known_remotes;
 787
 788         if (argc != 2)
 789                 usage_with_options(builtin_remote_rm_usage, options);
 790
 791         remote = remote_get(argv[1]);
 792         if (!remote)
 793                 die(_("No such remote: %s"), argv[1]);
 794
 795         known_remotes.to_delete = remote;
 796         for_each_remote(add_known_remote, &known_remotes);
 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         if (!result) {
 843                 strbuf_addf(&buf, "remote.%s", remote->name);
 844                 if (git_config_rename_section(buf.buf, NULL) < 1)
 845                         return error(_("Could not remove config section '%s'"), buf.buf);
 846         }
 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         struct string_list delete_refs_list = STRING_LIST_INIT_NODUP;
1315         const char **delete_refs;
1316         const char *dangling_msg = dry_run
1317                 ? _(" %s will become dangling!")
1318                 : _(" %s has become dangling!");
1319
1320         memset(&states, 0, sizeof(states));
1321         get_remote_ref_states(remote, &states, GET_REF_STATES);
1322
1323         if (states.stale.nr) {
1324                 printf_ln(_("Pruning %s"), remote);
1325                 printf_ln(_("URL: %s"),
1326                        states.remote->url_nr
1327                        ? states.remote->url[0]
1328                        : _("(no URL)"));
1329
1330                 delete_refs = xmalloc(states.stale.nr * sizeof(*delete_refs));
1331                 for (i = 0; i < states.stale.nr; i++)
1332                         delete_refs[i] = states.stale.items[i].util;
1333                 if (!dry_run)
1334                         result |= repack_without_refs(delete_refs, states.stale.nr);
1335                 free(delete_refs);
1336         }
1337
1338         for (i = 0; i < states.stale.nr; i++) {
1339                 const char *refname = states.stale.items[i].util;
1340
1341                 string_list_insert(&delete_refs_list, refname);
1342
1343                 if (!dry_run)
1344                         result |= delete_ref(refname, NULL, 0);
1345
1346                 if (dry_run)
1347                         printf_ln(_(" * [would prune] %s"),
1348                                abbrev_ref(refname, "refs/remotes/"));
1349                 else
1350                         printf_ln(_(" * [pruned] %s"),
1351                                abbrev_ref(refname, "refs/remotes/"));
1352         }
1353
1354         warn_dangling_symrefs(stdout, dangling_msg, &delete_refs_list);
1355         string_list_clear(&delete_refs_list, 0);
1356
1357         free_remote_ref_states(&states);
1358         return result;
1359 }
1360
1361 static int prune(int argc, const char **argv)
1362 {
1363         int dry_run = 0, result = 0;
1364         struct option options[] = {
1365                 OPT__DRY_RUN(&dry_run, N_("dry run")),
1366                 OPT_END()
1367         };
1368
1369         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1370                              0);
1371
1372         if (argc < 1)
1373                 usage_with_options(builtin_remote_prune_usage, options);
1374
1375         for (; argc; argc--, argv++)
1376                 result |= prune_remote(*argv, dry_run);
1377
1378         return result;
1379 }
1380
1381 static int get_remote_default(const char *key, const char *value, void *priv)
1382 {
1383         if (strcmp(key, "remotes.default") == 0) {
1384                 int *found = priv;
1385                 *found = 1;
1386         }
1387         return 0;
1388 }
1389
1390 static int update(int argc, const char **argv)
1391 {
1392         int i, prune = -1;
1393         struct option options[] = {
1394                 OPT_BOOL('p', "prune", &prune,
1395                          N_("prune remotes after fetching")),
1396                 OPT_END()
1397         };
1398         struct argv_array fetch_argv = ARGV_ARRAY_INIT;
1399         int default_defined = 0;
1400         int retval;
1401
1402         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1403                              PARSE_OPT_KEEP_ARGV0);
1404
1405         argv_array_push(&fetch_argv, "fetch");
1406
1407         if (prune != -1)
1408                 argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
1409         if (verbose)
1410                 argv_array_push(&fetch_argv, "-v");
1411         argv_array_push(&fetch_argv, "--multiple");
1412         if (argc < 2)
1413                 argv_array_push(&fetch_argv, "default");
1414         for (i = 1; i < argc; i++)
1415                 argv_array_push(&fetch_argv, argv[i]);
1416
1417         if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
1418                 git_config(get_remote_default, &default_defined);
1419                 if (!default_defined) {
1420                         argv_array_pop(&fetch_argv);
1421                         argv_array_push(&fetch_argv, "--all");
1422                 }
1423         }
1424
1425         retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
1426         argv_array_clear(&fetch_argv);
1427         return retval;
1428 }
1429
1430 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1431 {
1432         return git_config_set_multivar(key, NULL, NULL, 1);
1433 }
1434
1435 static int add_branches(struct remote *remote, const char **branches,
1436                         const char *key)
1437 {
1438         const char *remotename = remote->name;
1439         int mirror = remote->mirror;
1440         struct strbuf refspec = STRBUF_INIT;
1441
1442         for (; *branches; branches++)
1443                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1444                         strbuf_release(&refspec);
1445                         return 1;
1446                 }
1447
1448         strbuf_release(&refspec);
1449         return 0;
1450 }
1451
1452 static int set_remote_branches(const char *remotename, const char **branches,
1453                                 int add_mode)
1454 {
1455         struct strbuf key = STRBUF_INIT;
1456         struct remote *remote;
1457
1458         strbuf_addf(&key, "remote.%s.fetch", remotename);
1459
1460         if (!remote_is_configured(remotename))
1461                 die(_("No such remote '%s'"), remotename);
1462         remote = remote_get(remotename);
1463
1464         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1465                 strbuf_release(&key);
1466                 return 1;
1467         }
1468         if (add_branches(remote, branches, key.buf)) {
1469                 strbuf_release(&key);
1470                 return 1;
1471         }
1472
1473         strbuf_release(&key);
1474         return 0;
1475 }
1476
1477 static int set_branches(int argc, const char **argv)
1478 {
1479         int add_mode = 0;
1480         struct option options[] = {
1481                 OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
1482                 OPT_END()
1483         };
1484
1485         argc = parse_options(argc, argv, NULL, options,
1486                              builtin_remote_setbranches_usage, 0);
1487         if (argc == 0) {
1488                 error(_("no remote specified"));
1489                 usage_with_options(builtin_remote_setbranches_usage, options);
1490         }
1491         argv[argc] = NULL;
1492
1493         return set_remote_branches(argv[0], argv + 1, add_mode);
1494 }
1495
1496 static int set_url(int argc, const char **argv)
1497 {
1498         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1499         int matches = 0, negative_matches = 0;
1500         const char *remotename = NULL;
1501         const char *newurl = NULL;
1502         const char *oldurl = NULL;
1503         struct remote *remote;
1504         regex_t old_regex;
1505         const char **urlset;
1506         int urlset_nr;
1507         struct strbuf name_buf = STRBUF_INIT;
1508         struct option options[] = {
1509                 OPT_BOOL('\0', "push", &push_mode,
1510                          N_("manipulate push URLs")),
1511                 OPT_BOOL('\0', "add", &add_mode,
1512                          N_("add URL")),
1513                 OPT_BOOL('\0', "delete", &delete_mode,
1514                             N_("delete URLs")),
1515                 OPT_END()
1516         };
1517         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1518                              PARSE_OPT_KEEP_ARGV0);
1519
1520         if (add_mode && delete_mode)
1521                 die(_("--add --delete doesn't make sense"));
1522
1523         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1524                 usage_with_options(builtin_remote_seturl_usage, options);
1525
1526         remotename = argv[1];
1527         newurl = argv[2];
1528         if (argc > 3)
1529                 oldurl = argv[3];
1530
1531         if (delete_mode)
1532                 oldurl = newurl;
1533
1534         if (!remote_is_configured(remotename))
1535                 die(_("No such remote '%s'"), remotename);
1536         remote = remote_get(remotename);
1537
1538         if (push_mode) {
1539                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1540                 urlset = remote->pushurl;
1541                 urlset_nr = remote->pushurl_nr;
1542         } else {
1543                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1544                 urlset = remote->url;
1545                 urlset_nr = remote->url_nr;
1546         }
1547
1548         /* Special cases that add new entry. */
1549         if ((!oldurl && !delete_mode) || add_mode) {
1550                 if (add_mode)
1551                         git_config_set_multivar(name_buf.buf, newurl,
1552                                 "^$", 0);
1553                 else
1554                         git_config_set(name_buf.buf, newurl);
1555                 strbuf_release(&name_buf);
1556                 return 0;
1557         }
1558
1559         /* Old URL specified. Demand that one matches. */
1560         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1561                 die(_("Invalid old URL pattern: %s"), oldurl);
1562
1563         for (i = 0; i < urlset_nr; i++)
1564                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1565                         matches++;
1566                 else
1567                         negative_matches++;
1568         if (!delete_mode && !matches)
1569                 die(_("No such URL found: %s"), oldurl);
1570         if (delete_mode && !negative_matches && !push_mode)
1571                 die(_("Will not delete all non-push URLs"));
1572
1573         regfree(&old_regex);
1574
1575         if (!delete_mode)
1576                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1577         else
1578                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1579         return 0;
1580 }
1581
1582 int cmd_remote(int argc, const char **argv, const char *prefix)
1583 {
1584         struct option options[] = {
1585                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
1586                 OPT_END()
1587         };
1588         int result;
1589
1590         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1591                 PARSE_OPT_STOP_AT_NON_OPTION);
1592
1593         if (argc < 1)
1594                 result = show_all();
1595         else if (!strcmp(argv[0], "add"))
1596                 result = add(argc, argv);
1597         else if (!strcmp(argv[0], "rename"))
1598                 result = mv(argc, argv);
1599         else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
1600                 result = rm(argc, argv);
1601         else if (!strcmp(argv[0], "set-head"))
1602                 result = set_head(argc, argv);
1603         else if (!strcmp(argv[0], "set-branches"))
1604                 result = set_branches(argc, argv);
1605         else if (!strcmp(argv[0], "set-url"))
1606                 result = set_url(argc, argv);
1607         else if (!strcmp(argv[0], "show"))
1608                 result = show(argc, argv);
1609         else if (!strcmp(argv[0], "prune"))
1610                 result = prune(argc, argv);
1611         else if (!strcmp(argv[0], "update"))
1612                 result = update(argc, argv);
1613         else {
1614                 error(_("Unknown subcommand: %s"), argv[0]);
1615                 usage_with_options(builtin_remote_usage, options);
1616         }
1617
1618         return result ? 1 : 0;
1619 }