builtin/remote.c

   1 #include "builtin.h"
   2 #include "parse-options.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5 #include "string-list.h"
   6 #include "strbuf.h"
   7 #include "run-command.h"
   8 #include "refs.h"
   9
  10 static const char * const builtin_remote_usage[] = {
  11         "git remote [-v | --verbose]",
  12         "git remote add [-t <branch>] [-m <master>] [-f] [--mirror=<fetch|push>] <name> <url>",
  13         "git remote rename <old> <new>",
  14         "git remote rm <name>",
  15         "git remote set-head <name> (-a | -d | <branch>)",
  16         "git remote [-v | --verbose] show [-n] <name>",
  17         "git remote prune [-n | --dry-run] <name>",
  18         "git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]",
  19         "git remote set-branches [--add] <name> <branch>...",
  20         "git remote set-url <name> <newurl> [<oldurl>]",
  21         "git remote set-url --add <name> <newurl>",
  22         "git remote set-url --delete <name> <url>",
  23         NULL
  24 };
  25
  26 static const char * const builtin_remote_add_usage[] = {
  27         "git remote add [<options>] <name> <url>",
  28         NULL
  29 };
  30
  31 static const char * const builtin_remote_rename_usage[] = {
  32         "git remote rename <old> <new>",
  33         NULL
  34 };
  35
  36 static const char * const builtin_remote_rm_usage[] = {
  37         "git remote rm <name>",
  38         NULL
  39 };
  40
  41 static const char * const builtin_remote_sethead_usage[] = {
  42         "git remote set-head <name> (-a | -d | <branch>])",
  43         NULL
  44 };
  45
  46 static const char * const builtin_remote_setbranches_usage[] = {
  47         "git remote set-branches <name> <branch>...",
  48         "git remote set-branches --add <name> <branch>...",
  49         NULL
  50 };
  51
  52 static const char * const builtin_remote_show_usage[] = {
  53         "git remote show [<options>] <name>",
  54         NULL
  55 };
  56
  57 static const char * const builtin_remote_prune_usage[] = {
  58         "git remote prune [<options>] <name>",
  59         NULL
  60 };
  61
  62 static const char * const builtin_remote_update_usage[] = {
  63         "git remote update [<options>] [<group> | <remote>]...",
  64         NULL
  65 };
  66
  67 static const char * const builtin_remote_seturl_usage[] = {
  68         "git remote set-url [--push] <name> <newurl> [<oldurl>]",
  69         "git remote set-url --add <name> <newurl>",
  70         "git remote set-url --delete <name> <url>",
  71         NULL
  72 };
  73
  74 #define GET_REF_STATES (1<<0)
  75 #define GET_HEAD_NAMES (1<<1)
  76 #define GET_PUSH_REF_STATES (1<<2)
  77
  78 static int verbose;
  79
  80 static int show_all(void);
  81 static int prune_remote(const char *remote, int dry_run);
  82
  83 static inline int postfixcmp(const char *string, const char *postfix)
  84 {
  85         int len1 = strlen(string), len2 = strlen(postfix);
  86         if (len1 < len2)
  87                 return 1;
  88         return strcmp(string + len1 - len2, postfix);
  89 }
  90
  91 static int fetch_remote(const char *name)
  92 {
  93         const char *argv[] = { "fetch", name, NULL, NULL };
  94         if (verbose) {
  95                 argv[1] = "-v";
  96                 argv[2] = name;
  97         }
  98         printf("Updating %s\n", name);
  99         if (run_command_v_opt(argv, RUN_GIT_CMD))
 100                 return error("Could not fetch %s", name);
 101         return 0;
 102 }
 103
 104 enum {
 105         TAGS_UNSET = 0,
 106         TAGS_DEFAULT = 1,
 107         TAGS_SET = 2
 108 };
 109
 110 #define MIRROR_NONE 0
 111 #define MIRROR_FETCH 1
 112 #define MIRROR_PUSH 2
 113 #define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 114
 115 static int add_branch(const char *key, const char *branchname,
 116                 const char *remotename, int mirror, struct strbuf *tmp)
 117 {
 118         strbuf_reset(tmp);
 119         strbuf_addch(tmp, '+');
 120         if (mirror)
 121                 strbuf_addf(tmp, "refs/%s:refs/%s",
 122                                 branchname, branchname);
 123         else
 124                 strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 125                                 branchname, remotename, branchname);
 126         return git_config_set_multivar(key, tmp->buf, "^$", 0);
 127 }
 128
 129 static const char mirror_advice[] =
 130 "--mirror is dangerous and deprecated; please\n"
 131 "\t use --mirror=fetch or --mirror=push instead";
 132
 133 static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 134 {
 135         unsigned *mirror = opt->value;
 136         if (not)
 137                 *mirror = MIRROR_NONE;
 138         else if (!arg) {
 139                 warning("%s", mirror_advice);
 140                 *mirror = MIRROR_BOTH;
 141         }
 142         else if (!strcmp(arg, "fetch"))
 143                 *mirror = MIRROR_FETCH;
 144         else if (!strcmp(arg, "push"))
 145                 *mirror = MIRROR_PUSH;
 146         else
 147                 return error("unknown mirror argument: %s", arg);
 148         return 0;
 149 }
 150
 151 static int add(int argc, const char **argv)
 152 {
 153         int fetch = 0, fetch_tags = TAGS_DEFAULT;
 154         unsigned mirror = MIRROR_NONE;
 155         struct string_list track = STRING_LIST_INIT_NODUP;
 156         const char *master = NULL;
 157         struct remote *remote;
 158         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 159         const char *name, *url;
 160         int i;
 161
 162         struct option options[] = {
 163                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
 164                 OPT_SET_INT(0, "tags", &fetch_tags,
 165                             "import all tags and associated objects when fetching",
 166                             TAGS_SET),
 167                 OPT_SET_INT(0, NULL, &fetch_tags,
 168                             "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
 169                 OPT_STRING_LIST('t', "track", &track, "branch",
 170                                 "branch(es) to track"),
 171                 OPT_STRING('m', "master", &master, "branch", "master branch"),
 172                 { OPTION_CALLBACK, 0, "mirror", &mirror, "push|fetch",
 173                         "set up remote as a mirror to push to or fetch from",
 174                         PARSE_OPT_OPTARG, parse_mirror_opt },
 175                 OPT_END()
 176         };
 177
 178         argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 179                              0);
 180
 181         if (argc < 2)
 182                 usage_with_options(builtin_remote_add_usage, options);
 183
 184         if (mirror && master)
 185                 die("specifying a master branch makes no sense with --mirror");
 186         if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 187                 die("specifying branches to track makes sense only with fetch mirrors");
 188
 189         name = argv[0];
 190         url = argv[1];
 191
 192         remote = remote_get(name);
 193         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 194                         remote->fetch_refspec_nr))
 195                 die("remote %s already exists.", name);
 196
 197         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 198         if (!valid_fetch_refspec(buf2.buf))
 199                 die("'%s' is not a valid remote name", name);
 200
 201         strbuf_addf(&buf, "remote.%s.url", name);
 202         if (git_config_set(buf.buf, url))
 203                 return 1;
 204
 205         if (!mirror || mirror & MIRROR_FETCH) {
 206                 strbuf_reset(&buf);
 207                 strbuf_addf(&buf, "remote.%s.fetch", name);
 208                 if (track.nr == 0)
 209                         string_list_append(&track, "*");
 210                 for (i = 0; i < track.nr; i++) {
 211                         if (add_branch(buf.buf, track.items[i].string,
 212                                        name, mirror, &buf2))
 213                                 return 1;
 214                 }
 215         }
 216
 217         if (mirror & MIRROR_PUSH) {
 218                 strbuf_reset(&buf);
 219                 strbuf_addf(&buf, "remote.%s.mirror", name);
 220                 if (git_config_set(buf.buf, "true"))
 221                         return 1;
 222         }
 223
 224         if (fetch_tags != TAGS_DEFAULT) {
 225                 strbuf_reset(&buf);
 226                 strbuf_addf(&buf, "remote.%s.tagopt", name);
 227                 if (git_config_set(buf.buf,
 228                         fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 229                         return 1;
 230         }
 231
 232         if (fetch && fetch_remote(name))
 233                 return 1;
 234
 235         if (master) {
 236                 strbuf_reset(&buf);
 237                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 238
 239                 strbuf_reset(&buf2);
 240                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 241
 242                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 243                         return error("Could not setup master '%s'", master);
 244         }
 245
 246         strbuf_release(&buf);
 247         strbuf_release(&buf2);
 248         string_list_clear(&track, 0);
 249
 250         return 0;
 251 }
 252
 253 struct branch_info {
 254         char *remote_name;
 255         struct string_list merge;
 256         enum { NO_REBASE, NORMAL_REBASE, INTERACTIVE_REBASE } rebase;
 257 };
 258
 259 static struct string_list branch_list;
 260
 261 static const char *abbrev_ref(const char *name, const char *prefix)
 262 {
 263         const char *abbrev = skip_prefix(name, prefix);
 264         if (abbrev)
 265                 return abbrev;
 266         return name;
 267 }
 268 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 269
 270 static int config_read_branches(const char *key, const char *value, void *cb)
 271 {
 272         if (!prefixcmp(key, "branch.")) {
 273                 const char *orig_key = key;
 274                 char *name;
 275                 struct string_list_item *item;
 276                 struct branch_info *info;
 277                 enum { REMOTE, MERGE, REBASE } type;
 278
 279                 key += 7;
 280                 if (!postfixcmp(key, ".remote")) {
 281                         name = xstrndup(key, strlen(key) - 7);
 282                         type = REMOTE;
 283                 } else if (!postfixcmp(key, ".merge")) {
 284                         name = xstrndup(key, strlen(key) - 6);
 285                         type = MERGE;
 286                 } else if (!postfixcmp(key, ".rebase")) {
 287                         name = xstrndup(key, strlen(key) - 7);
 288                         type = REBASE;
 289                 } else
 290                         return 0;
 291
 292                 item = string_list_insert(&branch_list, name);
 293
 294                 if (!item->util)
 295                         item->util = xcalloc(sizeof(struct branch_info), 1);
 296                 info = item->util;
 297                 if (type == REMOTE) {
 298                         if (info->remote_name)
 299                                 warning("more than one %s", orig_key);
 300                         info->remote_name = xstrdup(value);
 301                 } else if (type == MERGE) {
 302                         char *space = strchr(value, ' ');
 303                         value = abbrev_branch(value);
 304                         while (space) {
 305                                 char *merge;
 306                                 merge = xstrndup(value, space - value);
 307                                 string_list_append(&info->merge, merge);
 308                                 value = abbrev_branch(space + 1);
 309                                 space = strchr(value, ' ');
 310                         }
 311                         string_list_append(&info->merge, xstrdup(value));
 312                 } else
 313                         info->rebase = value && *value == 'i' ?
 314                                 INTERACTIVE_REBASE :
 315                                 (git_config_bool(orig_key, value) ?
 316                                  NORMAL_REBASE : NO_REBASE);
 317         }
 318         return 0;
 319 }
 320
 321 static void read_branches(void)
 322 {
 323         if (branch_list.nr)
 324                 return;
 325         git_config(config_read_branches, NULL);
 326 }
 327
 328 struct ref_states {
 329         struct remote *remote;
 330         struct string_list new, stale, tracked, heads, push;
 331         int queried;
 332 };
 333
 334 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 335 {
 336         struct ref *fetch_map = NULL, **tail = &fetch_map;
 337         struct ref *ref, *stale_refs;
 338         int i;
 339
 340         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 341                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 342                         die("Could not get fetch map for refspec %s",
 343                                 states->remote->fetch_refspec[i]);
 344
 345         states->new.strdup_strings = 1;
 346         states->tracked.strdup_strings = 1;
 347         states->stale.strdup_strings = 1;
 348         for (ref = fetch_map; ref; ref = ref->next) {
 349                 if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
 350                         string_list_append(&states->new, abbrev_branch(ref->name));
 351                 else
 352                         string_list_append(&states->tracked, abbrev_branch(ref->name));
 353         }
 354         stale_refs = get_stale_heads(states->remote->fetch,
 355                                      states->remote->fetch_refspec_nr, fetch_map);
 356         for (ref = stale_refs; ref; ref = ref->next) {
 357                 struct string_list_item *item =
 358                         string_list_append(&states->stale, abbrev_branch(ref->name));
 359                 item->util = xstrdup(ref->name);
 360         }
 361         free_refs(stale_refs);
 362         free_refs(fetch_map);
 363
 364         sort_string_list(&states->new);
 365         sort_string_list(&states->tracked);
 366         sort_string_list(&states->stale);
 367
 368         return 0;
 369 }
 370
 371 struct push_info {
 372         char *dest;
 373         int forced;
 374         enum {
 375                 PUSH_STATUS_CREATE = 0,
 376                 PUSH_STATUS_DELETE,
 377                 PUSH_STATUS_UPTODATE,
 378                 PUSH_STATUS_FASTFORWARD,
 379                 PUSH_STATUS_OUTOFDATE,
 380                 PUSH_STATUS_NOTQUERIED
 381         } status;
 382 };
 383
 384 static int get_push_ref_states(const struct ref *remote_refs,
 385         struct ref_states *states)
 386 {
 387         struct remote *remote = states->remote;
 388         struct ref *ref, *local_refs, *push_map;
 389         if (remote->mirror)
 390                 return 0;
 391
 392         local_refs = get_local_heads();
 393         push_map = copy_ref_list(remote_refs);
 394
 395         match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
 396                         remote->push_refspec, MATCH_REFS_NONE);
 397
 398         states->push.strdup_strings = 1;
 399         for (ref = push_map; ref; ref = ref->next) {
 400                 struct string_list_item *item;
 401                 struct push_info *info;
 402
 403                 if (!ref->peer_ref)
 404                         continue;
 405                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 406
 407                 item = string_list_append(&states->push,
 408                                           abbrev_branch(ref->peer_ref->name));
 409                 item->util = xcalloc(sizeof(struct push_info), 1);
 410                 info = item->util;
 411                 info->forced = ref->force;
 412                 info->dest = xstrdup(abbrev_branch(ref->name));
 413
 414                 if (is_null_sha1(ref->new_sha1)) {
 415                         info->status = PUSH_STATUS_DELETE;
 416                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 417                         info->status = PUSH_STATUS_UPTODATE;
 418                 else if (is_null_sha1(ref->old_sha1))
 419                         info->status = PUSH_STATUS_CREATE;
 420                 else if (has_sha1_file(ref->old_sha1) &&
 421                          ref_newer(ref->new_sha1, ref->old_sha1))
 422                         info->status = PUSH_STATUS_FASTFORWARD;
 423                 else
 424                         info->status = PUSH_STATUS_OUTOFDATE;
 425         }
 426         free_refs(local_refs);
 427         free_refs(push_map);
 428         return 0;
 429 }
 430
 431 static int get_push_ref_states_noquery(struct ref_states *states)
 432 {
 433         int i;
 434         struct remote *remote = states->remote;
 435         struct string_list_item *item;
 436         struct push_info *info;
 437
 438         if (remote->mirror)
 439                 return 0;
 440
 441         states->push.strdup_strings = 1;
 442         if (!remote->push_refspec_nr) {
 443                 item = string_list_append(&states->push, "(matching)");
 444                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 445                 info->status = PUSH_STATUS_NOTQUERIED;
 446                 info->dest = xstrdup(item->string);
 447         }
 448         for (i = 0; i < remote->push_refspec_nr; i++) {
 449                 struct refspec *spec = remote->push + i;
 450                 if (spec->matching)
 451                         item = string_list_append(&states->push, "(matching)");
 452                 else if (strlen(spec->src))
 453                         item = string_list_append(&states->push, spec->src);
 454                 else
 455                         item = string_list_append(&states->push, "(delete)");
 456
 457                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 458                 info->forced = spec->force;
 459                 info->status = PUSH_STATUS_NOTQUERIED;
 460                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 461         }
 462         return 0;
 463 }
 464
 465 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 466 {
 467         struct ref *ref, *matches;
 468         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 469         struct refspec refspec;
 470
 471         refspec.force = 0;
 472         refspec.pattern = 1;
 473         refspec.src = refspec.dst = "refs/heads/*";
 474         states->heads.strdup_strings = 1;
 475         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 476         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 477                                     fetch_map, 1);
 478         for (ref = matches; ref; ref = ref->next)
 479                 string_list_append(&states->heads, abbrev_branch(ref->name));
 480
 481         free_refs(fetch_map);
 482         free_refs(matches);
 483
 484         return 0;
 485 }
 486
 487 struct known_remote {
 488         struct known_remote *next;
 489         struct remote *remote;
 490 };
 491
 492 struct known_remotes {
 493         struct remote *to_delete;
 494         struct known_remote *list;
 495 };
 496
 497 static int add_known_remote(struct remote *remote, void *cb_data)
 498 {
 499         struct known_remotes *all = cb_data;
 500         struct known_remote *r;
 501
 502         if (!strcmp(all->to_delete->name, remote->name))
 503                 return 0;
 504
 505         r = xmalloc(sizeof(*r));
 506         r->remote = remote;
 507         r->next = all->list;
 508         all->list = r;
 509         return 0;
 510 }
 511
 512 struct branches_for_remote {
 513         struct remote *remote;
 514         struct string_list *branches, *skipped;
 515         struct known_remotes *keep;
 516 };
 517
 518 static int add_branch_for_removal(const char *refname,
 519         const unsigned char *sha1, int flags, void *cb_data)
 520 {
 521         struct branches_for_remote *branches = cb_data;
 522         struct refspec refspec;
 523         struct string_list_item *item;
 524         struct known_remote *kr;
 525
 526         memset(&refspec, 0, sizeof(refspec));
 527         refspec.dst = (char *)refname;
 528         if (remote_find_tracking(branches->remote, &refspec))
 529                 return 0;
 530
 531         /* don't delete a branch if another remote also uses it */
 532         for (kr = branches->keep->list; kr; kr = kr->next) {
 533                 memset(&refspec, 0, sizeof(refspec));
 534                 refspec.dst = (char *)refname;
 535                 if (!remote_find_tracking(kr->remote, &refspec))
 536                         return 0;
 537         }
 538
 539         /* don't delete non-remote-tracking refs */
 540         if (prefixcmp(refname, "refs/remotes/")) {
 541                 /* advise user how to delete local branches */
 542                 if (!prefixcmp(refname, "refs/heads/"))
 543                         string_list_append(branches->skipped,
 544                                            abbrev_branch(refname));
 545                 /* silently skip over other non-remote refs */
 546                 return 0;
 547         }
 548
 549         /* make sure that symrefs are deleted */
 550         if (flags & REF_ISSYMREF)
 551                 return unlink(git_path("%s", refname));
 552
 553         item = string_list_append(branches->branches, refname);
 554         item->util = xmalloc(20);
 555         hashcpy(item->util, sha1);
 556
 557         return 0;
 558 }
 559
 560 struct rename_info {
 561         const char *old;
 562         const char *new;
 563         struct string_list *remote_branches;
 564 };
 565
 566 static int read_remote_branches(const char *refname,
 567         const unsigned char *sha1, int flags, void *cb_data)
 568 {
 569         struct rename_info *rename = cb_data;
 570         struct strbuf buf = STRBUF_INIT;
 571         struct string_list_item *item;
 572         int flag;
 573         unsigned char orig_sha1[20];
 574         const char *symref;
 575
 576         strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
 577         if (!prefixcmp(refname, buf.buf)) {
 578                 item = string_list_append(rename->remote_branches, xstrdup(refname));
 579                 symref = resolve_ref_unsafe(refname, orig_sha1, 1, &flag);
 580                 if (flag & REF_ISSYMREF)
 581                         item->util = xstrdup(symref);
 582                 else
 583                         item->util = NULL;
 584         }
 585
 586         return 0;
 587 }
 588
 589 static int migrate_file(struct remote *remote)
 590 {
 591         struct strbuf buf = STRBUF_INIT;
 592         int i;
 593         char *path = NULL;
 594
 595         strbuf_addf(&buf, "remote.%s.url", remote->name);
 596         for (i = 0; i < remote->url_nr; i++)
 597                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 598                         return error("Could not append '%s' to '%s'",
 599                                         remote->url[i], buf.buf);
 600         strbuf_reset(&buf);
 601         strbuf_addf(&buf, "remote.%s.push", remote->name);
 602         for (i = 0; i < remote->push_refspec_nr; i++)
 603                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 604                         return error("Could not append '%s' to '%s'",
 605                                         remote->push_refspec[i], buf.buf);
 606         strbuf_reset(&buf);
 607         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 608         for (i = 0; i < remote->fetch_refspec_nr; i++)
 609                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 610                         return error("Could not append '%s' to '%s'",
 611                                         remote->fetch_refspec[i], buf.buf);
 612         if (remote->origin == REMOTE_REMOTES)
 613                 path = git_path("remotes/%s", remote->name);
 614         else if (remote->origin == REMOTE_BRANCHES)
 615                 path = git_path("branches/%s", remote->name);
 616         if (path)
 617                 unlink_or_warn(path);
 618         return 0;
 619 }
 620
 621 static int mv(int argc, const char **argv)
 622 {
 623         struct option options[] = {
 624                 OPT_END()
 625         };
 626         struct remote *oldremote, *newremote;
 627         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
 628                 old_remote_context = STRBUF_INIT;
 629         struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 630         struct rename_info rename;
 631         int i, refspec_updated = 0;
 632
 633         if (argc != 3)
 634                 usage_with_options(builtin_remote_rename_usage, options);
 635
 636         rename.old = argv[1];
 637         rename.new = argv[2];
 638         rename.remote_branches = &remote_branches;
 639
 640         oldremote = remote_get(rename.old);
 641         if (!oldremote)
 642                 die("No such remote: %s", rename.old);
 643
 644         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 645                 return migrate_file(oldremote);
 646
 647         newremote = remote_get(rename.new);
 648         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 649                 die("remote %s already exists.", rename.new);
 650
 651         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 652         if (!valid_fetch_refspec(buf.buf))
 653                 die("'%s' is not a valid remote name", rename.new);
 654
 655         strbuf_reset(&buf);
 656         strbuf_addf(&buf, "remote.%s", rename.old);
 657         strbuf_addf(&buf2, "remote.%s", rename.new);
 658         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 659                 return error("Could not rename config section '%s' to '%s'",
 660                                 buf.buf, buf2.buf);
 661
 662         strbuf_reset(&buf);
 663         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 664         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 665                 return error("Could not remove config section '%s'", buf.buf);
 666         strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
 667         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 668                 char *ptr;
 669
 670                 strbuf_reset(&buf2);
 671                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 672                 ptr = strstr(buf2.buf, old_remote_context.buf);
 673                 if (ptr) {
 674                         refspec_updated = 1;
 675                         strbuf_splice(&buf2,
 676                                       ptr-buf2.buf + strlen(":refs/remotes/"),
 677                                       strlen(rename.old), rename.new,
 678                                       strlen(rename.new));
 679                 } else
 680                         warning("Not updating non-default fetch respec\n"
 681                                 "\t%s\n"
 682                                 "\tPlease update the configuration manually if necessary.",
 683                                 buf2.buf);
 684
 685                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 686                         return error("Could not append '%s'", buf.buf);
 687         }
 688
 689         read_branches();
 690         for (i = 0; i < branch_list.nr; i++) {
 691                 struct string_list_item *item = branch_list.items + i;
 692                 struct branch_info *info = item->util;
 693                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 694                         strbuf_reset(&buf);
 695                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 696                         if (git_config_set(buf.buf, rename.new)) {
 697                                 return error("Could not set '%s'", buf.buf);
 698                         }
 699                 }
 700         }
 701
 702         if (!refspec_updated)
 703                 return 0;
 704
 705         /*
 706          * First remove symrefs, then rename the rest, finally create
 707          * the new symrefs.
 708          */
 709         for_each_ref(read_remote_branches, &rename);
 710         for (i = 0; i < remote_branches.nr; i++) {
 711                 struct string_list_item *item = remote_branches.items + i;
 712                 int flag = 0;
 713                 unsigned char sha1[20];
 714
 715                 read_ref_full(item->string, sha1, 1, &flag);
 716                 if (!(flag & REF_ISSYMREF))
 717                         continue;
 718                 if (delete_ref(item->string, NULL, REF_NODEREF))
 719                         die("deleting '%s' failed", item->string);
 720         }
 721         for (i = 0; i < remote_branches.nr; i++) {
 722                 struct string_list_item *item = remote_branches.items + i;
 723
 724                 if (item->util)
 725                         continue;
 726                 strbuf_reset(&buf);
 727                 strbuf_addstr(&buf, item->string);
 728                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 729                                 rename.new, strlen(rename.new));
 730                 strbuf_reset(&buf2);
 731                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 732                                 item->string, buf.buf);
 733                 if (rename_ref(item->string, buf.buf, buf2.buf))
 734                         die("renaming '%s' failed", item->string);
 735         }
 736         for (i = 0; i < remote_branches.nr; i++) {
 737                 struct string_list_item *item = remote_branches.items + i;
 738
 739                 if (!item->util)
 740                         continue;
 741                 strbuf_reset(&buf);
 742                 strbuf_addstr(&buf, item->string);
 743                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 744                                 rename.new, strlen(rename.new));
 745                 strbuf_reset(&buf2);
 746                 strbuf_addstr(&buf2, item->util);
 747                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 748                                 rename.new, strlen(rename.new));
 749                 strbuf_reset(&buf3);
 750                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 751                                 item->string, buf.buf);
 752                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 753                         die("creating '%s' failed", buf.buf);
 754         }
 755         return 0;
 756 }
 757
 758 static int remove_branches(struct string_list *branches)
 759 {
 760         int i, result = 0;
 761         for (i = 0; i < branches->nr; i++) {
 762                 struct string_list_item *item = branches->items + i;
 763                 const char *refname = item->string;
 764                 unsigned char *sha1 = item->util;
 765
 766                 if (delete_ref(refname, sha1, 0))
 767                         result |= error("Could not remove branch %s", refname);
 768         }
 769         return result;
 770 }
 771
 772 static int rm(int argc, const char **argv)
 773 {
 774         struct option options[] = {
 775                 OPT_END()
 776         };
 777         struct remote *remote;
 778         struct strbuf buf = STRBUF_INIT;
 779         struct known_remotes known_remotes = { NULL, NULL };
 780         struct string_list branches = STRING_LIST_INIT_DUP;
 781         struct string_list skipped = STRING_LIST_INIT_DUP;
 782         struct branches_for_remote cb_data;
 783         int i, result;
 784
 785         memset(&cb_data, 0, sizeof(cb_data));
 786         cb_data.branches = &branches;
 787         cb_data.skipped = &skipped;
 788         cb_data.keep = &known_remotes;
 789
 790         if (argc != 2)
 791                 usage_with_options(builtin_remote_rm_usage, options);
 792
 793         remote = remote_get(argv[1]);
 794         if (!remote)
 795                 die("No such remote: %s", argv[1]);
 796
 797         known_remotes.to_delete = remote;
 798         for_each_remote(add_known_remote, &known_remotes);
 799
 800         strbuf_addf(&buf, "remote.%s", remote->name);
 801         if (git_config_rename_section(buf.buf, NULL) < 1)
 802                 return error("Could not remove config section '%s'", buf.buf);
 803
 804         read_branches();
 805         for (i = 0; i < branch_list.nr; i++) {
 806                 struct string_list_item *item = branch_list.items + i;
 807                 struct branch_info *info = item->util;
 808                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 809                         const char *keys[] = { "remote", "merge", NULL }, **k;
 810                         for (k = keys; *k; k++) {
 811                                 strbuf_reset(&buf);
 812                                 strbuf_addf(&buf, "branch.%s.%s",
 813                                                 item->string, *k);
 814                                 if (git_config_set(buf.buf, NULL)) {
 815                                         strbuf_release(&buf);
 816                                         return -1;
 817                                 }
 818                         }
 819                 }
 820         }
 821
 822         /*
 823          * We cannot just pass a function to for_each_ref() which deletes
 824          * the branches one by one, since for_each_ref() relies on cached
 825          * refs, which are invalidated when deleting a branch.
 826          */
 827         cb_data.remote = remote;
 828         result = for_each_ref(add_branch_for_removal, &cb_data);
 829         strbuf_release(&buf);
 830
 831         if (!result)
 832                 result = remove_branches(&branches);
 833         string_list_clear(&branches, 1);
 834
 835         if (skipped.nr) {
 836                 fprintf(stderr, skipped.nr == 1 ?
 837                         "Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 838                         "to delete it, use:\n" :
 839                         "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 840                         "to delete them, use:\n");
 841                 for (i = 0; i < skipped.nr; i++)
 842                         fprintf(stderr, "  git branch -d %s\n",
 843                                 skipped.items[i].string);
 844         }
 845         string_list_clear(&skipped, 0);
 846
 847         return result;
 848 }
 849
 850 static void clear_push_info(void *util, const char *string)
 851 {
 852         struct push_info *info = util;
 853         free(info->dest);
 854         free(info);
 855 }
 856
 857 static void free_remote_ref_states(struct ref_states *states)
 858 {
 859         string_list_clear(&states->new, 0);
 860         string_list_clear(&states->stale, 1);
 861         string_list_clear(&states->tracked, 0);
 862         string_list_clear(&states->heads, 0);
 863         string_list_clear_func(&states->push, clear_push_info);
 864 }
 865
 866 static int append_ref_to_tracked_list(const char *refname,
 867         const unsigned char *sha1, int flags, void *cb_data)
 868 {
 869         struct ref_states *states = cb_data;
 870         struct refspec refspec;
 871
 872         if (flags & REF_ISSYMREF)
 873                 return 0;
 874
 875         memset(&refspec, 0, sizeof(refspec));
 876         refspec.dst = (char *)refname;
 877         if (!remote_find_tracking(states->remote, &refspec))
 878                 string_list_append(&states->tracked, abbrev_branch(refspec.src));
 879
 880         return 0;
 881 }
 882
 883 static int get_remote_ref_states(const char *name,
 884                                  struct ref_states *states,
 885                                  int query)
 886 {
 887         struct transport *transport;
 888         const struct ref *remote_refs;
 889
 890         states->remote = remote_get(name);
 891         if (!states->remote)
 892                 return error("No such remote: %s", name);
 893
 894         read_branches();
 895
 896         if (query) {
 897                 transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 898                         states->remote->url[0] : NULL);
 899                 remote_refs = transport_get_remote_refs(transport);
 900                 transport_disconnect(transport);
 901
 902                 states->queried = 1;
 903                 if (query & GET_REF_STATES)
 904                         get_ref_states(remote_refs, states);
 905                 if (query & GET_HEAD_NAMES)
 906                         get_head_names(remote_refs, states);
 907                 if (query & GET_PUSH_REF_STATES)
 908                         get_push_ref_states(remote_refs, states);
 909         } else {
 910                 for_each_ref(append_ref_to_tracked_list, states);
 911                 sort_string_list(&states->tracked);
 912                 get_push_ref_states_noquery(states);
 913         }
 914
 915         return 0;
 916 }
 917
 918 struct show_info {
 919         struct string_list *list;
 920         struct ref_states *states;
 921         int width, width2;
 922         int any_rebase;
 923 };
 924
 925 static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 926 {
 927         struct show_info *info = cb_data;
 928         int n = strlen(item->string);
 929         if (n > info->width)
 930                 info->width = n;
 931         string_list_insert(info->list, item->string);
 932         return 0;
 933 }
 934
 935 static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 936 {
 937         struct show_info *info = cb_data;
 938         struct ref_states *states = info->states;
 939         const char *name = item->string;
 940
 941         if (states->queried) {
 942                 const char *fmt = "%s";
 943                 const char *arg = "";
 944                 if (string_list_has_string(&states->new, name)) {
 945                         fmt = " new (next fetch will store in remotes/%s)";
 946                         arg = states->remote->name;
 947                 } else if (string_list_has_string(&states->tracked, name))
 948                         arg = " tracked";
 949                 else if (string_list_has_string(&states->stale, name))
 950                         arg = " stale (use 'git remote prune' to remove)";
 951                 else
 952                         arg = " ???";
 953                 printf("    %-*s", info->width, name);
 954                 printf(fmt, arg);
 955                 printf("\n");
 956         } else
 957                 printf("    %s\n", name);
 958
 959         return 0;
 960 }
 961
 962 static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 963 {
 964         struct show_info *show_info = cb_data;
 965         struct ref_states *states = show_info->states;
 966         struct branch_info *branch_info = branch_item->util;
 967         struct string_list_item *item;
 968         int n;
 969
 970         if (!branch_info->merge.nr || !branch_info->remote_name ||
 971             strcmp(states->remote->name, branch_info->remote_name))
 972                 return 0;
 973         if ((n = strlen(branch_item->string)) > show_info->width)
 974                 show_info->width = n;
 975         if (branch_info->rebase)
 976                 show_info->any_rebase = 1;
 977
 978         item = string_list_insert(show_info->list, branch_item->string);
 979         item->util = branch_info;
 980
 981         return 0;
 982 }
 983
 984 static int show_local_info_item(struct string_list_item *item, void *cb_data)
 985 {
 986         struct show_info *show_info = cb_data;
 987         struct branch_info *branch_info = item->util;
 988         struct string_list *merge = &branch_info->merge;
 989         const char *also;
 990         int i;
 991
 992         if (branch_info->rebase && branch_info->merge.nr > 1) {
 993                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
 994                         item->string);
 995                 return 0;
 996         }
 997
 998         printf("    %-*s ", show_info->width, item->string);
 999         if (branch_info->rebase) {
1000                 printf("rebases %sonto remote %s\n",
1001                         branch_info->rebase == INTERACTIVE_REBASE ?
1002                         "interactively " : "", merge->items[0].string);
1003                 return 0;
1004         } else if (show_info->any_rebase) {
1005                 printf(" merges with remote %s\n", merge->items[0].string);
1006                 also = "    and with remote";
1007         } else {
1008                 printf("merges with remote %s\n", merge->items[0].string);
1009                 also = "   and with remote";
1010         }
1011         for (i = 1; i < merge->nr; i++)
1012                 printf("    %-*s %s %s\n", show_info->width, "", also,
1013                        merge->items[i].string);
1014
1015         return 0;
1016 }
1017
1018 static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1019 {
1020         struct show_info *show_info = cb_data;
1021         struct push_info *push_info = push_item->util;
1022         struct string_list_item *item;
1023         int n;
1024         if ((n = strlen(push_item->string)) > show_info->width)
1025                 show_info->width = n;
1026         if ((n = strlen(push_info->dest)) > show_info->width2)
1027                 show_info->width2 = n;
1028         item = string_list_append(show_info->list, push_item->string);
1029         item->util = push_item->util;
1030         return 0;
1031 }
1032
1033 /*
1034  * Sorting comparison for a string list that has push_info
1035  * structs in its util field
1036  */
1037 static int cmp_string_with_push(const void *va, const void *vb)
1038 {
1039         const struct string_list_item *a = va;
1040         const struct string_list_item *b = vb;
1041         const struct push_info *a_push = a->util;
1042         const struct push_info *b_push = b->util;
1043         int cmp = strcmp(a->string, b->string);
1044         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1045 }
1046
1047 static int show_push_info_item(struct string_list_item *item, void *cb_data)
1048 {
1049         struct show_info *show_info = cb_data;
1050         struct push_info *push_info = item->util;
1051         char *src = item->string, *status = NULL;
1052
1053         switch (push_info->status) {
1054         case PUSH_STATUS_CREATE:
1055                 status = "create";
1056                 break;
1057         case PUSH_STATUS_DELETE:
1058                 status = "delete";
1059                 src = "(none)";
1060                 break;
1061         case PUSH_STATUS_UPTODATE:
1062                 status = "up to date";
1063                 break;
1064         case PUSH_STATUS_FASTFORWARD:
1065                 status = "fast-forwardable";
1066                 break;
1067         case PUSH_STATUS_OUTOFDATE:
1068                 status = "local out of date";
1069                 break;
1070         case PUSH_STATUS_NOTQUERIED:
1071                 break;
1072         }
1073         if (status)
1074                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
1075                         push_info->forced ? "forces" : "pushes",
1076                         show_info->width2, push_info->dest, status);
1077         else
1078                 printf("    %-*s %s to %s\n", show_info->width, src,
1079                         push_info->forced ? "forces" : "pushes",
1080                         push_info->dest);
1081         return 0;
1082 }
1083
1084 static int show(int argc, const char **argv)
1085 {
1086         int no_query = 0, result = 0, query_flag = 0;
1087         struct option options[] = {
1088                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1089                 OPT_END()
1090         };
1091         struct ref_states states;
1092         struct string_list info_list = STRING_LIST_INIT_NODUP;
1093         struct show_info info;
1094
1095         argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1096                              0);
1097
1098         if (argc < 1)
1099                 return show_all();
1100
1101         if (!no_query)
1102                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1103
1104         memset(&states, 0, sizeof(states));
1105         memset(&info, 0, sizeof(info));
1106         info.states = &states;
1107         info.list = &info_list;
1108         for (; argc; argc--, argv++) {
1109                 int i;
1110                 const char **url;
1111                 int url_nr;
1112
1113                 get_remote_ref_states(*argv, &states, query_flag);
1114
1115                 printf("* remote %s\n", *argv);
1116                 printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1117                         states.remote->url[0] : "(no URL)");
1118                 if (states.remote->pushurl_nr) {
1119                         url = states.remote->pushurl;
1120                         url_nr = states.remote->pushurl_nr;
1121                 } else {
1122                         url = states.remote->url;
1123                         url_nr = states.remote->url_nr;
1124                 }
1125                 for (i = 0; i < url_nr; i++)
1126                         printf("  Push  URL: %s\n", url[i]);
1127                 if (!i)
1128                         printf("  Push  URL: %s\n", "(no URL)");
1129                 if (no_query)
1130                         printf("  HEAD branch: (not queried)\n");
1131                 else if (!states.heads.nr)
1132                         printf("  HEAD branch: (unknown)\n");
1133                 else if (states.heads.nr == 1)
1134                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1135                 else {
1136                         printf("  HEAD branch (remote HEAD is ambiguous,"
1137                                " may be one of the following):\n");
1138                         for (i = 0; i < states.heads.nr; i++)
1139                                 printf("    %s\n", states.heads.items[i].string);
1140                 }
1141
1142                 /* remote branch info */
1143                 info.width = 0;
1144                 for_each_string_list(&states.new, add_remote_to_show_info, &info);
1145                 for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1146                 for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1147                 if (info.list->nr)
1148                         printf("  Remote branch%s:%s\n",
1149                                info.list->nr > 1 ? "es" : "",
1150                                 no_query ? " (status not queried)" : "");
1151                 for_each_string_list(info.list, show_remote_info_item, &info);
1152                 string_list_clear(info.list, 0);
1153
1154                 /* git pull info */
1155                 info.width = 0;
1156                 info.any_rebase = 0;
1157                 for_each_string_list(&branch_list, add_local_to_show_info, &info);
1158                 if (info.list->nr)
1159                         printf("  Local branch%s configured for 'git pull':\n",
1160                                info.list->nr > 1 ? "es" : "");
1161                 for_each_string_list(info.list, show_local_info_item, &info);
1162                 string_list_clear(info.list, 0);
1163
1164                 /* git push info */
1165                 if (states.remote->mirror)
1166                         printf("  Local refs will be mirrored by 'git push'\n");
1167
1168                 info.width = info.width2 = 0;
1169                 for_each_string_list(&states.push, add_push_to_show_info, &info);
1170                 qsort(info.list->items, info.list->nr,
1171                         sizeof(*info.list->items), cmp_string_with_push);
1172                 if (info.list->nr)
1173                         printf("  Local ref%s configured for 'git push'%s:\n",
1174                                 info.list->nr > 1 ? "s" : "",
1175                                 no_query ? " (status not queried)" : "");
1176                 for_each_string_list(info.list, show_push_info_item, &info);
1177                 string_list_clear(info.list, 0);
1178
1179                 free_remote_ref_states(&states);
1180         }
1181
1182         return result;
1183 }
1184
1185 static int set_head(int argc, const char **argv)
1186 {
1187         int i, opt_a = 0, opt_d = 0, result = 0;
1188         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1189         char *head_name = NULL;
1190
1191         struct option options[] = {
1192                 OPT_BOOLEAN('a', "auto", &opt_a,
1193                             "set refs/remotes/<name>/HEAD according to remote"),
1194                 OPT_BOOLEAN('d', "delete", &opt_d,
1195                             "delete refs/remotes/<name>/HEAD"),
1196                 OPT_END()
1197         };
1198         argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1199                              0);
1200         if (argc)
1201                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1202
1203         if (!opt_a && !opt_d && argc == 2) {
1204                 head_name = xstrdup(argv[1]);
1205         } else if (opt_a && !opt_d && argc == 1) {
1206                 struct ref_states states;
1207                 memset(&states, 0, sizeof(states));
1208                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1209                 if (!states.heads.nr)
1210                         result |= error("Cannot determine remote HEAD");
1211                 else if (states.heads.nr > 1) {
1212                         result |= error("Multiple remote HEAD branches. "
1213                                         "Please choose one explicitly with:");
1214                         for (i = 0; i < states.heads.nr; i++)
1215                                 fprintf(stderr, "  git remote set-head %s %s\n",
1216                                         argv[0], states.heads.items[i].string);
1217                 } else
1218                         head_name = xstrdup(states.heads.items[0].string);
1219                 free_remote_ref_states(&states);
1220         } else if (opt_d && !opt_a && argc == 1) {
1221                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1222                         result |= error("Could not delete %s", buf.buf);
1223         } else
1224                 usage_with_options(builtin_remote_sethead_usage, options);
1225
1226         if (head_name) {
1227                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1228                 /* make sure it's valid */
1229                 if (!ref_exists(buf2.buf))
1230                         result |= error("Not a valid ref: %s", buf2.buf);
1231                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1232                         result |= error("Could not setup %s", buf.buf);
1233                 if (opt_a)
1234                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1235                 free(head_name);
1236         }
1237
1238         strbuf_release(&buf);
1239         strbuf_release(&buf2);
1240         return result;
1241 }
1242
1243 static int prune(int argc, const char **argv)
1244 {
1245         int dry_run = 0, result = 0;
1246         struct option options[] = {
1247                 OPT__DRY_RUN(&dry_run, "dry run"),
1248                 OPT_END()
1249         };
1250
1251         argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1252                              0);
1253
1254         if (argc < 1)
1255                 usage_with_options(builtin_remote_prune_usage, options);
1256
1257         for (; argc; argc--, argv++)
1258                 result |= prune_remote(*argv, dry_run);
1259
1260         return result;
1261 }
1262
1263 static int prune_remote(const char *remote, int dry_run)
1264 {
1265         int result = 0, i;
1266         struct ref_states states;
1267         const char *dangling_msg = dry_run
1268                 ? " %s will become dangling!\n"
1269                 : " %s has become dangling!\n";
1270
1271         memset(&states, 0, sizeof(states));
1272         get_remote_ref_states(remote, &states, GET_REF_STATES);
1273
1274         if (states.stale.nr) {
1275                 printf("Pruning %s\n", remote);
1276                 printf("URL: %s\n",
1277                        states.remote->url_nr
1278                        ? states.remote->url[0]
1279                        : "(no URL)");
1280         }
1281
1282         for (i = 0; i < states.stale.nr; i++) {
1283                 const char *refname = states.stale.items[i].util;
1284
1285                 if (!dry_run)
1286                         result |= delete_ref(refname, NULL, 0);
1287
1288                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1289                        abbrev_ref(refname, "refs/remotes/"));
1290                 warn_dangling_symref(stdout, dangling_msg, refname);
1291         }
1292
1293         free_remote_ref_states(&states);
1294         return result;
1295 }
1296
1297 static int get_remote_default(const char *key, const char *value, void *priv)
1298 {
1299         if (strcmp(key, "remotes.default") == 0) {
1300                 int *found = priv;
1301                 *found = 1;
1302         }
1303         return 0;
1304 }
1305
1306 static int update(int argc, const char **argv)
1307 {
1308         int i, prune = 0;
1309         struct option options[] = {
1310                 OPT_BOOLEAN('p', "prune", &prune,
1311                             "prune remotes after fetching"),
1312                 OPT_END()
1313         };
1314         const char **fetch_argv;
1315         int fetch_argc = 0;
1316         int default_defined = 0;
1317
1318         fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1319
1320         argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1321                              PARSE_OPT_KEEP_ARGV0);
1322
1323         fetch_argv[fetch_argc++] = "fetch";
1324
1325         if (prune)
1326                 fetch_argv[fetch_argc++] = "--prune";
1327         if (verbose)
1328                 fetch_argv[fetch_argc++] = "-v";
1329         fetch_argv[fetch_argc++] = "--multiple";
1330         if (argc < 2)
1331                 fetch_argv[fetch_argc++] = "default";
1332         for (i = 1; i < argc; i++)
1333                 fetch_argv[fetch_argc++] = argv[i];
1334
1335         if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1336                 git_config(get_remote_default, &default_defined);
1337                 if (!default_defined)
1338                         fetch_argv[fetch_argc-1] = "--all";
1339         }
1340
1341         fetch_argv[fetch_argc] = NULL;
1342
1343         return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1344 }
1345
1346 static int remove_all_fetch_refspecs(const char *remote, const char *key)
1347 {
1348         return git_config_set_multivar(key, NULL, NULL, 1);
1349 }
1350
1351 static int add_branches(struct remote *remote, const char **branches,
1352                         const char *key)
1353 {
1354         const char *remotename = remote->name;
1355         int mirror = remote->mirror;
1356         struct strbuf refspec = STRBUF_INIT;
1357
1358         for (; *branches; branches++)
1359                 if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1360                         strbuf_release(&refspec);
1361                         return 1;
1362                 }
1363
1364         strbuf_release(&refspec);
1365         return 0;
1366 }
1367
1368 static int set_remote_branches(const char *remotename, const char **branches,
1369                                 int add_mode)
1370 {
1371         struct strbuf key = STRBUF_INIT;
1372         struct remote *remote;
1373
1374         strbuf_addf(&key, "remote.%s.fetch", remotename);
1375
1376         if (!remote_is_configured(remotename))
1377                 die("No such remote '%s'", remotename);
1378         remote = remote_get(remotename);
1379
1380         if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1381                 strbuf_release(&key);
1382                 return 1;
1383         }
1384         if (add_branches(remote, branches, key.buf)) {
1385                 strbuf_release(&key);
1386                 return 1;
1387         }
1388
1389         strbuf_release(&key);
1390         return 0;
1391 }
1392
1393 static int set_branches(int argc, const char **argv)
1394 {
1395         int add_mode = 0;
1396         struct option options[] = {
1397                 OPT_BOOLEAN('\0', "add", &add_mode, "add branch"),
1398                 OPT_END()
1399         };
1400
1401         argc = parse_options(argc, argv, NULL, options,
1402                              builtin_remote_setbranches_usage, 0);
1403         if (argc == 0) {
1404                 error("no remote specified");
1405                 usage_with_options(builtin_remote_setbranches_usage, options);
1406         }
1407         argv[argc] = NULL;
1408
1409         return set_remote_branches(argv[0], argv + 1, add_mode);
1410 }
1411
1412 static int set_url(int argc, const char **argv)
1413 {
1414         int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1415         int matches = 0, negative_matches = 0;
1416         const char *remotename = NULL;
1417         const char *newurl = NULL;
1418         const char *oldurl = NULL;
1419         struct remote *remote;
1420         regex_t old_regex;
1421         const char **urlset;
1422         int urlset_nr;
1423         struct strbuf name_buf = STRBUF_INIT;
1424         struct option options[] = {
1425                 OPT_BOOLEAN('\0', "push", &push_mode,
1426                             "manipulate push URLs"),
1427                 OPT_BOOLEAN('\0', "add", &add_mode,
1428                             "add URL"),
1429                 OPT_BOOLEAN('\0', "delete", &delete_mode,
1430                             "delete URLs"),
1431                 OPT_END()
1432         };
1433         argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
1434                              PARSE_OPT_KEEP_ARGV0);
1435
1436         if (add_mode && delete_mode)
1437                 die("--add --delete doesn't make sense");
1438
1439         if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1440                 usage_with_options(builtin_remote_seturl_usage, options);
1441
1442         remotename = argv[1];
1443         newurl = argv[2];
1444         if (argc > 3)
1445                 oldurl = argv[3];
1446
1447         if (delete_mode)
1448                 oldurl = newurl;
1449
1450         if (!remote_is_configured(remotename))
1451                 die("No such remote '%s'", remotename);
1452         remote = remote_get(remotename);
1453
1454         if (push_mode) {
1455                 strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1456                 urlset = remote->pushurl;
1457                 urlset_nr = remote->pushurl_nr;
1458         } else {
1459                 strbuf_addf(&name_buf, "remote.%s.url", remotename);
1460                 urlset = remote->url;
1461                 urlset_nr = remote->url_nr;
1462         }
1463
1464         /* Special cases that add new entry. */
1465         if ((!oldurl && !delete_mode) || add_mode) {
1466                 if (add_mode)
1467                         git_config_set_multivar(name_buf.buf, newurl,
1468                                 "^$", 0);
1469                 else
1470                         git_config_set(name_buf.buf, newurl);
1471                 strbuf_release(&name_buf);
1472                 return 0;
1473         }
1474
1475         /* Old URL specified. Demand that one matches. */
1476         if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1477                 die("Invalid old URL pattern: %s", oldurl);
1478
1479         for (i = 0; i < urlset_nr; i++)
1480                 if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1481                         matches++;
1482                 else
1483                         negative_matches++;
1484         if (!delete_mode && !matches)
1485                 die("No such URL found: %s", oldurl);
1486         if (delete_mode && !negative_matches && !push_mode)
1487                 die("Will not delete all non-push URLs");
1488
1489         regfree(&old_regex);
1490
1491         if (!delete_mode)
1492                 git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1493         else
1494                 git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1495         return 0;
1496 }
1497
1498 static int get_one_entry(struct remote *remote, void *priv)
1499 {
1500         struct string_list *list = priv;
1501         struct strbuf url_buf = STRBUF_INIT;
1502         const char **url;
1503         int i, url_nr;
1504
1505         if (remote->url_nr > 0) {
1506                 strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1507                 string_list_append(list, remote->name)->util =
1508                                 strbuf_detach(&url_buf, NULL);
1509         } else
1510                 string_list_append(list, remote->name)->util = NULL;
1511         if (remote->pushurl_nr) {
1512                 url = remote->pushurl;
1513                 url_nr = remote->pushurl_nr;
1514         } else {
1515                 url = remote->url;
1516                 url_nr = remote->url_nr;
1517         }
1518         for (i = 0; i < url_nr; i++)
1519         {
1520                 strbuf_addf(&url_buf, "%s (push)", url[i]);
1521                 string_list_append(list, remote->name)->util =
1522                                 strbuf_detach(&url_buf, NULL);
1523         }
1524
1525         return 0;
1526 }
1527
1528 static int show_all(void)
1529 {
1530         struct string_list list = STRING_LIST_INIT_NODUP;
1531         int result;
1532
1533         list.strdup_strings = 1;
1534         result = for_each_remote(get_one_entry, &list);
1535
1536         if (!result) {
1537                 int i;
1538
1539                 sort_string_list(&list);
1540                 for (i = 0; i < list.nr; i++) {
1541                         struct string_list_item *item = list.items + i;
1542                         if (verbose)
1543                                 printf("%s\t%s\n", item->string,
1544                                         item->util ? (const char *)item->util : "");
1545                         else {
1546                                 if (i && !strcmp((item - 1)->string, item->string))
1547                                         continue;
1548                                 printf("%s\n", item->string);
1549                         }
1550                 }
1551         }
1552         string_list_clear(&list, 1);
1553         return result;
1554 }
1555
1556 int cmd_remote(int argc, const char **argv, const char *prefix)
1557 {
1558         struct option options[] = {
1559                 OPT__VERBOSE(&verbose, "be verbose; must be placed before a subcommand"),
1560                 OPT_END()
1561         };
1562         int result;
1563
1564         argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1565                 PARSE_OPT_STOP_AT_NON_OPTION);
1566
1567         if (argc < 1)
1568                 result = show_all();
1569         else if (!strcmp(argv[0], "add"))
1570                 result = add(argc, argv);
1571         else if (!strcmp(argv[0], "rename"))
1572                 result = mv(argc, argv);
1573         else if (!strcmp(argv[0], "rm"))
1574                 result = rm(argc, argv);
1575         else if (!strcmp(argv[0], "set-head"))
1576                 result = set_head(argc, argv);
1577         else if (!strcmp(argv[0], "set-branches"))
1578                 result = set_branches(argc, argv);
1579         else if (!strcmp(argv[0], "set-url"))
1580                 result = set_url(argc, argv);
1581         else if (!strcmp(argv[0], "show"))
1582                 result = show(argc, argv);
1583         else if (!strcmp(argv[0], "prune"))
1584                 result = prune(argc, argv);
1585         else if (!strcmp(argv[0], "update"))
1586                 result = update(argc, argv);
1587         else {
1588                 error("Unknown subcommand: %s", argv[0]);
1589                 usage_with_options(builtin_remote_usage, options);
1590         }
1591
1592         return result ? 1 : 0;
1593 }