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