builtin-remote.c

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