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