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