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 show [-n] <name>",
  16         "git remote prune [-n | --dry-run] <name>",
  17         "git remote [-v | --verbose] update [group]",
  18         NULL
  19 };
  20
  21 static int verbose;
  22
  23 static int show_all(void);
  24
  25 static inline int postfixcmp(const char *string, const char *postfix)
  26 {
  27         int len1 = strlen(string), len2 = strlen(postfix);
  28         if (len1 < len2)
  29                 return 1;
  30         return strcmp(string + len1 - len2, postfix);
  31 }
  32
  33 static int opt_parse_track(const struct option *opt, const char *arg, int not)
  34 {
  35         struct string_list *list = opt->value;
  36         if (not)
  37                 string_list_clear(list, 0);
  38         else
  39                 string_list_append(arg, list);
  40         return 0;
  41 }
  42
  43 static int fetch_remote(const char *name)
  44 {
  45         const char *argv[] = { "fetch", name, NULL, NULL };
  46         if (verbose) {
  47                 argv[1] = "-v";
  48                 argv[2] = name;
  49         }
  50         printf("Updating %s\n", name);
  51         if (run_command_v_opt(argv, RUN_GIT_CMD))
  52                 return error("Could not fetch %s", name);
  53         return 0;
  54 }
  55
  56 static int add(int argc, const char **argv)
  57 {
  58         int fetch = 0, mirror = 0;
  59         struct string_list track = { NULL, 0, 0 };
  60         const char *master = NULL;
  61         struct remote *remote;
  62         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
  63         const char *name, *url;
  64         int i;
  65
  66         struct option options[] = {
  67                 OPT_GROUP("add specific options"),
  68                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
  69                 OPT_CALLBACK('t', "track", &track, "branch",
  70                         "branch(es) to track", opt_parse_track),
  71                 OPT_STRING('m', "master", &master, "branch", "master branch"),
  72                 OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
  73                 OPT_END()
  74         };
  75
  76         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
  77
  78         if (argc < 2)
  79                 usage_with_options(builtin_remote_usage, options);
  80
  81         name = argv[0];
  82         url = argv[1];
  83
  84         remote = remote_get(name);
  85         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
  86                         remote->fetch_refspec_nr))
  87                 die("remote %s already exists.", name);
  88
  89         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
  90         if (!valid_fetch_refspec(buf2.buf))
  91                 die("'%s' is not a valid remote name", name);
  92
  93         strbuf_addf(&buf, "remote.%s.url", name);
  94         if (git_config_set(buf.buf, url))
  95                 return 1;
  96
  97         strbuf_reset(&buf);
  98         strbuf_addf(&buf, "remote.%s.fetch", name);
  99
 100         if (track.nr == 0)
 101                 string_list_append("*", &track);
 102         for (i = 0; i < track.nr; i++) {
 103                 struct string_list_item *item = track.items + i;
 104
 105                 strbuf_reset(&buf2);
 106                 strbuf_addch(&buf2, '+');
 107                 if (mirror)
 108                         strbuf_addf(&buf2, "refs/%s:refs/%s",
 109                                         item->string, item->string);
 110                 else
 111                         strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
 112                                         item->string, name, item->string);
 113                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 114                         return 1;
 115         }
 116
 117         if (mirror) {
 118                 strbuf_reset(&buf);
 119                 strbuf_addf(&buf, "remote.%s.mirror", name);
 120                 if (git_config_set(buf.buf, "true"))
 121                         return 1;
 122         }
 123
 124         if (fetch && fetch_remote(name))
 125                 return 1;
 126
 127         if (master) {
 128                 strbuf_reset(&buf);
 129                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 130
 131                 strbuf_reset(&buf2);
 132                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 133
 134                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 135                         return error("Could not setup master '%s'", master);
 136         }
 137
 138         strbuf_release(&buf);
 139         strbuf_release(&buf2);
 140         string_list_clear(&track, 0);
 141
 142         return 0;
 143 }
 144
 145 struct branch_info {
 146         char *remote_name;
 147         struct string_list merge;
 148 };
 149
 150 static struct string_list branch_list;
 151
 152 static const char *abbrev_ref(const char *name, const char *prefix)
 153 {
 154         const char *abbrev = skip_prefix(name, prefix);
 155         if (abbrev)
 156                 return abbrev;
 157         return name;
 158 }
 159 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 160
 161 static int config_read_branches(const char *key, const char *value, void *cb)
 162 {
 163         if (!prefixcmp(key, "branch.")) {
 164                 char *name;
 165                 struct string_list_item *item;
 166                 struct branch_info *info;
 167                 enum { REMOTE, MERGE } type;
 168
 169                 key += 7;
 170                 if (!postfixcmp(key, ".remote")) {
 171                         name = xstrndup(key, strlen(key) - 7);
 172                         type = REMOTE;
 173                 } else if (!postfixcmp(key, ".merge")) {
 174                         name = xstrndup(key, strlen(key) - 6);
 175                         type = MERGE;
 176                 } else
 177                         return 0;
 178
 179                 item = string_list_insert(name, &branch_list);
 180
 181                 if (!item->util)
 182                         item->util = xcalloc(sizeof(struct branch_info), 1);
 183                 info = item->util;
 184                 if (type == REMOTE) {
 185                         if (info->remote_name)
 186                                 warning("more than one branch.%s", key);
 187                         info->remote_name = xstrdup(value);
 188                 } else {
 189                         char *space = strchr(value, ' ');
 190                         value = abbrev_branch(value);
 191                         while (space) {
 192                                 char *merge;
 193                                 merge = xstrndup(value, space - value);
 194                                 string_list_append(merge, &info->merge);
 195                                 value = abbrev_branch(space + 1);
 196                                 space = strchr(value, ' ');
 197                         }
 198                         string_list_append(xstrdup(value), &info->merge);
 199                 }
 200         }
 201         return 0;
 202 }
 203
 204 static void read_branches(void)
 205 {
 206         if (branch_list.nr)
 207                 return;
 208         git_config(config_read_branches, NULL);
 209 }
 210
 211 struct ref_states {
 212         struct remote *remote;
 213         struct string_list new, stale, tracked;
 214 };
 215
 216 static int handle_one_branch(const char *refname,
 217         const unsigned char *sha1, int flags, void *cb_data)
 218 {
 219         struct ref_states *states = cb_data;
 220         struct refspec refspec;
 221
 222         memset(&refspec, 0, sizeof(refspec));
 223         refspec.dst = (char *)refname;
 224         if (!remote_find_tracking(states->remote, &refspec)) {
 225                 struct string_list_item *item;
 226                 const char *name = abbrev_branch(refspec.src);
 227                 /* symbolic refs pointing nowhere were handled already */
 228                 if ((flags & REF_ISSYMREF) ||
 229                     string_list_has_string(&states->tracked, name) ||
 230                     string_list_has_string(&states->new, name))
 231                         return 0;
 232                 item = string_list_append(name, &states->stale);
 233                 item->util = xstrdup(refname);
 234         }
 235         return 0;
 236 }
 237
 238 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 239 {
 240         struct ref *fetch_map = NULL, **tail = &fetch_map;
 241         struct ref *ref;
 242         int i;
 243
 244         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 245                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 246                         die("Could not get fetch map for refspec %s",
 247                                 states->remote->fetch_refspec[i]);
 248
 249         states->new.strdup_strings = states->tracked.strdup_strings = 1;
 250         for (ref = fetch_map; ref; ref = ref->next) {
 251                 unsigned char sha1[20];
 252                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 253                         string_list_append(abbrev_branch(ref->name), &states->new);
 254                 else
 255                         string_list_append(abbrev_branch(ref->name), &states->tracked);
 256         }
 257         free_refs(fetch_map);
 258
 259         sort_string_list(&states->new);
 260         sort_string_list(&states->tracked);
 261         for_each_ref(handle_one_branch, states);
 262         sort_string_list(&states->stale);
 263
 264         return 0;
 265 }
 266
 267 struct known_remote {
 268         struct known_remote *next;
 269         struct remote *remote;
 270 };
 271
 272 struct known_remotes {
 273         struct remote *to_delete;
 274         struct known_remote *list;
 275 };
 276
 277 static int add_known_remote(struct remote *remote, void *cb_data)
 278 {
 279         struct known_remotes *all = cb_data;
 280         struct known_remote *r;
 281
 282         if (!strcmp(all->to_delete->name, remote->name))
 283                 return 0;
 284
 285         r = xmalloc(sizeof(*r));
 286         r->remote = remote;
 287         r->next = all->list;
 288         all->list = r;
 289         return 0;
 290 }
 291
 292 struct branches_for_remote {
 293         struct remote *remote;
 294         struct string_list *branches, *skipped;
 295         struct known_remotes *keep;
 296 };
 297
 298 static int add_branch_for_removal(const char *refname,
 299         const unsigned char *sha1, int flags, void *cb_data)
 300 {
 301         struct branches_for_remote *branches = cb_data;
 302         struct refspec refspec;
 303         struct string_list_item *item;
 304         struct known_remote *kr;
 305
 306         memset(&refspec, 0, sizeof(refspec));
 307         refspec.dst = (char *)refname;
 308         if (remote_find_tracking(branches->remote, &refspec))
 309                 return 0;
 310
 311         /* don't delete a branch if another remote also uses it */
 312         for (kr = branches->keep->list; kr; kr = kr->next) {
 313                 memset(&refspec, 0, sizeof(refspec));
 314                 refspec.dst = (char *)refname;
 315                 if (!remote_find_tracking(kr->remote, &refspec))
 316                         return 0;
 317         }
 318
 319         /* don't delete non-remote refs */
 320         if (prefixcmp(refname, "refs/remotes")) {
 321                 /* advise user how to delete local branches */
 322                 if (!prefixcmp(refname, "refs/heads/"))
 323                         string_list_append(abbrev_branch(refname),
 324                                            branches->skipped);
 325                 /* silently skip over other non-remote refs */
 326                 return 0;
 327         }
 328
 329         /* make sure that symrefs are deleted */
 330         if (flags & REF_ISSYMREF)
 331                 return unlink(git_path("%s", refname));
 332
 333         item = string_list_append(refname, branches->branches);
 334         item->util = xmalloc(20);
 335         hashcpy(item->util, sha1);
 336
 337         return 0;
 338 }
 339
 340 struct rename_info {
 341         const char *old;
 342         const char *new;
 343         struct string_list *remote_branches;
 344 };
 345
 346 static int read_remote_branches(const char *refname,
 347         const unsigned char *sha1, int flags, void *cb_data)
 348 {
 349         struct rename_info *rename = cb_data;
 350         struct strbuf buf = STRBUF_INIT;
 351         struct string_list_item *item;
 352         int flag;
 353         unsigned char orig_sha1[20];
 354         const char *symref;
 355
 356         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 357         if(!prefixcmp(refname, buf.buf)) {
 358                 item = string_list_append(xstrdup(refname), rename->remote_branches);
 359                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
 360                 if (flag & REF_ISSYMREF)
 361                         item->util = xstrdup(symref);
 362                 else
 363                         item->util = NULL;
 364         }
 365
 366         return 0;
 367 }
 368
 369 static int migrate_file(struct remote *remote)
 370 {
 371         struct strbuf buf = STRBUF_INIT;
 372         int i;
 373         char *path = NULL;
 374
 375         strbuf_addf(&buf, "remote.%s.url", remote->name);
 376         for (i = 0; i < remote->url_nr; i++)
 377                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 378                         return error("Could not append '%s' to '%s'",
 379                                         remote->url[i], buf.buf);
 380         strbuf_reset(&buf);
 381         strbuf_addf(&buf, "remote.%s.push", remote->name);
 382         for (i = 0; i < remote->push_refspec_nr; i++)
 383                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 384                         return error("Could not append '%s' to '%s'",
 385                                         remote->push_refspec[i], buf.buf);
 386         strbuf_reset(&buf);
 387         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 388         for (i = 0; i < remote->fetch_refspec_nr; i++)
 389                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 390                         return error("Could not append '%s' to '%s'",
 391                                         remote->fetch_refspec[i], buf.buf);
 392         if (remote->origin == REMOTE_REMOTES)
 393                 path = git_path("remotes/%s", remote->name);
 394         else if (remote->origin == REMOTE_BRANCHES)
 395                 path = git_path("branches/%s", remote->name);
 396         if (path && unlink(path))
 397                 warning("failed to remove '%s'", path);
 398         return 0;
 399 }
 400
 401 static int mv(int argc, const char **argv)
 402 {
 403         struct option options[] = {
 404                 OPT_END()
 405         };
 406         struct remote *oldremote, *newremote;
 407         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 408         struct string_list remote_branches = { NULL, 0, 0, 0 };
 409         struct rename_info rename;
 410         int i;
 411
 412         if (argc != 3)
 413                 usage_with_options(builtin_remote_usage, options);
 414
 415         rename.old = argv[1];
 416         rename.new = argv[2];
 417         rename.remote_branches = &remote_branches;
 418
 419         oldremote = remote_get(rename.old);
 420         if (!oldremote)
 421                 die("No such remote: %s", rename.old);
 422
 423         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 424                 return migrate_file(oldremote);
 425
 426         newremote = remote_get(rename.new);
 427         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 428                 die("remote %s already exists.", rename.new);
 429
 430         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 431         if (!valid_fetch_refspec(buf.buf))
 432                 die("'%s' is not a valid remote name", rename.new);
 433
 434         strbuf_reset(&buf);
 435         strbuf_addf(&buf, "remote.%s", rename.old);
 436         strbuf_addf(&buf2, "remote.%s", rename.new);
 437         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 438                 return error("Could not rename config section '%s' to '%s'",
 439                                 buf.buf, buf2.buf);
 440
 441         strbuf_reset(&buf);
 442         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 443         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 444                 return error("Could not remove config section '%s'", buf.buf);
 445         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 446                 char *ptr;
 447
 448                 strbuf_reset(&buf2);
 449                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 450                 ptr = strstr(buf2.buf, rename.old);
 451                 if (ptr)
 452                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 453                                         rename.new, strlen(rename.new));
 454                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 455                         return error("Could not append '%s'", buf.buf);
 456         }
 457
 458         read_branches();
 459         for (i = 0; i < branch_list.nr; i++) {
 460                 struct string_list_item *item = branch_list.items + i;
 461                 struct branch_info *info = item->util;
 462                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 463                         strbuf_reset(&buf);
 464                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 465                         if (git_config_set(buf.buf, rename.new)) {
 466                                 return error("Could not set '%s'", buf.buf);
 467                         }
 468                 }
 469         }
 470
 471         /*
 472          * First remove symrefs, then rename the rest, finally create
 473          * the new symrefs.
 474          */
 475         for_each_ref(read_remote_branches, &rename);
 476         for (i = 0; i < remote_branches.nr; i++) {
 477                 struct string_list_item *item = remote_branches.items + i;
 478                 int flag = 0;
 479                 unsigned char sha1[20];
 480                 const char *symref;
 481
 482                 symref = resolve_ref(item->string, sha1, 1, &flag);
 483                 if (!(flag & REF_ISSYMREF))
 484                         continue;
 485                 if (delete_ref(item->string, NULL, REF_NODEREF))
 486                         die("deleting '%s' failed", item->string);
 487         }
 488         for (i = 0; i < remote_branches.nr; i++) {
 489                 struct string_list_item *item = remote_branches.items + i;
 490
 491                 if (item->util)
 492                         continue;
 493                 strbuf_reset(&buf);
 494                 strbuf_addstr(&buf, item->string);
 495                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 496                                 rename.new, strlen(rename.new));
 497                 strbuf_reset(&buf2);
 498                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 499                                 item->string, buf.buf);
 500                 if (rename_ref(item->string, buf.buf, buf2.buf))
 501                         die("renaming '%s' failed", item->string);
 502         }
 503         for (i = 0; i < remote_branches.nr; i++) {
 504                 struct string_list_item *item = remote_branches.items + i;
 505
 506                 if (!item->util)
 507                         continue;
 508                 strbuf_reset(&buf);
 509                 strbuf_addstr(&buf, item->string);
 510                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 511                                 rename.new, strlen(rename.new));
 512                 strbuf_reset(&buf2);
 513                 strbuf_addstr(&buf2, item->util);
 514                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 515                                 rename.new, strlen(rename.new));
 516                 strbuf_reset(&buf3);
 517                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 518                                 item->string, buf.buf);
 519                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 520                         die("creating '%s' failed", buf.buf);
 521         }
 522         return 0;
 523 }
 524
 525 static int remove_branches(struct string_list *branches)
 526 {
 527         int i, result = 0;
 528         for (i = 0; i < branches->nr; i++) {
 529                 struct string_list_item *item = branches->items + i;
 530                 const char *refname = item->string;
 531                 unsigned char *sha1 = item->util;
 532
 533                 if (delete_ref(refname, sha1, 0))
 534                         result |= error("Could not remove branch %s", refname);
 535         }
 536         return result;
 537 }
 538
 539 static int rm(int argc, const char **argv)
 540 {
 541         struct option options[] = {
 542                 OPT_END()
 543         };
 544         struct remote *remote;
 545         struct strbuf buf = STRBUF_INIT;
 546         struct known_remotes known_remotes = { NULL, NULL };
 547         struct string_list branches = { NULL, 0, 0, 1 };
 548         struct string_list skipped = { NULL, 0, 0, 1 };
 549         struct branches_for_remote cb_data = {
 550                 NULL, &branches, &skipped, &known_remotes
 551         };
 552         int i, result;
 553
 554         if (argc != 2)
 555                 usage_with_options(builtin_remote_usage, options);
 556
 557         remote = remote_get(argv[1]);
 558         if (!remote)
 559                 die("No such remote: %s", argv[1]);
 560
 561         known_remotes.to_delete = remote;
 562         for_each_remote(add_known_remote, &known_remotes);
 563
 564         strbuf_addf(&buf, "remote.%s", remote->name);
 565         if (git_config_rename_section(buf.buf, NULL) < 1)
 566                 return error("Could not remove config section '%s'", buf.buf);
 567
 568         read_branches();
 569         for (i = 0; i < branch_list.nr; i++) {
 570                 struct string_list_item *item = branch_list.items + i;
 571                 struct branch_info *info = item->util;
 572                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 573                         const char *keys[] = { "remote", "merge", NULL }, **k;
 574                         for (k = keys; *k; k++) {
 575                                 strbuf_reset(&buf);
 576                                 strbuf_addf(&buf, "branch.%s.%s",
 577                                                 item->string, *k);
 578                                 if (git_config_set(buf.buf, NULL)) {
 579                                         strbuf_release(&buf);
 580                                         return -1;
 581                                 }
 582                         }
 583                 }
 584         }
 585
 586         /*
 587          * We cannot just pass a function to for_each_ref() which deletes
 588          * the branches one by one, since for_each_ref() relies on cached
 589          * refs, which are invalidated when deleting a branch.
 590          */
 591         cb_data.remote = remote;
 592         result = for_each_ref(add_branch_for_removal, &cb_data);
 593         strbuf_release(&buf);
 594
 595         if (!result)
 596                 result = remove_branches(&branches);
 597         string_list_clear(&branches, 1);
 598
 599         if (skipped.nr) {
 600                 fprintf(stderr, skipped.nr == 1 ?
 601                         "Note: A non-remote branch was not removed; "
 602                         "to delete it, use:\n" :
 603                         "Note: Non-remote branches were not removed; "
 604                         "to delete them, use:\n");
 605                 for (i = 0; i < skipped.nr; i++)
 606                         fprintf(stderr, "  git branch -d %s\n",
 607                                 skipped.items[i].string);
 608         }
 609         string_list_clear(&skipped, 0);
 610
 611         return result;
 612 }
 613
 614 static void show_list(const char *title, struct string_list *list,
 615                       const char *extra_arg)
 616 {
 617         int i;
 618
 619         if (!list->nr)
 620                 return;
 621
 622         printf(title, list->nr > 1 ? "es" : "", extra_arg);
 623         printf("\n");
 624         for (i = 0; i < list->nr; i++)
 625                 printf("    %s\n", list->items[i].string);
 626 }
 627
 628 static void free_remote_ref_states(struct ref_states *states)
 629 {
 630         string_list_clear(&states->new, 0);
 631         string_list_clear(&states->stale, 0);
 632         string_list_clear(&states->tracked, 0);
 633 }
 634
 635 static int append_ref_to_tracked_list(const char *refname,
 636         const unsigned char *sha1, int flags, void *cb_data)
 637 {
 638         struct ref_states *states = cb_data;
 639         struct refspec refspec;
 640
 641         if (flags & REF_ISSYMREF)
 642                 return 0;
 643
 644         memset(&refspec, 0, sizeof(refspec));
 645         refspec.dst = (char *)refname;
 646         if (!remote_find_tracking(states->remote, &refspec))
 647                 string_list_append(abbrev_branch(refspec.src), &states->tracked);
 648
 649         return 0;
 650 }
 651
 652 static int get_remote_ref_states(const char *name,
 653                                  struct ref_states *states,
 654                                  int query)
 655 {
 656         struct transport *transport;
 657         const struct ref *remote_refs;
 658
 659         states->remote = remote_get(name);
 660         if (!states->remote)
 661                 return error("No such remote: %s", name);
 662
 663         read_branches();
 664
 665         if (query) {
 666                 transport = transport_get(NULL, states->remote->url_nr > 0 ?
 667                         states->remote->url[0] : NULL);
 668                 remote_refs = transport_get_remote_refs(transport);
 669                 transport_disconnect(transport);
 670
 671                 get_ref_states(remote_refs, states);
 672         } else {
 673                 for_each_ref(append_ref_to_tracked_list, states);
 674                 sort_string_list(&states->tracked);
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int show(int argc, const char **argv)
 681 {
 682         int no_query = 0, result = 0;
 683         struct option options[] = {
 684                 OPT_GROUP("show specific options"),
 685                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
 686                 OPT_END()
 687         };
 688         struct ref_states states;
 689
 690         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 691
 692         if (argc < 1)
 693                 return show_all();
 694
 695         memset(&states, 0, sizeof(states));
 696         for (; argc; argc--, argv++) {
 697                 int i;
 698
 699                 get_remote_ref_states(*argv, &states, !no_query);
 700
 701                 printf("* remote %s\n  URL: %s\n", *argv,
 702                         states.remote->url_nr > 0 ?
 703                                 states.remote->url[0] : "(no URL)");
 704
 705                 for (i = 0; i < branch_list.nr; i++) {
 706                         struct string_list_item *branch = branch_list.items + i;
 707                         struct branch_info *info = branch->util;
 708                         int j;
 709
 710                         if (!info->merge.nr || strcmp(*argv, info->remote_name))
 711                                 continue;
 712                         printf("  Remote branch%s merged with 'git pull' "
 713                                 "while on branch %s\n   ",
 714                                 info->merge.nr > 1 ? "es" : "",
 715                                 branch->string);
 716                         for (j = 0; j < info->merge.nr; j++)
 717                                 printf(" %s", info->merge.items[j].string);
 718                         printf("\n");
 719                 }
 720
 721                 if (!no_query) {
 722                         show_list("  New remote branch%s (next fetch "
 723                                 "will store in remotes/%s)",
 724                                 &states.new, states.remote->name);
 725                         show_list("  Stale tracking branch%s (use 'git remote "
 726                                 "prune')", &states.stale, "");
 727                 }
 728
 729                 show_list("  Tracked remote branch%s", &states.tracked, "");
 730
 731                 if (states.remote->push_refspec_nr) {
 732                         printf("  Local branch%s pushed with 'git push'\n",
 733                                 states.remote->push_refspec_nr > 1 ?
 734                                         "es" : "");
 735                         for (i = 0; i < states.remote->push_refspec_nr; i++) {
 736                                 struct refspec *spec = states.remote->push + i;
 737                                 printf("    %s%s%s%s\n",
 738                                        spec->force ? "+" : "",
 739                                        abbrev_branch(spec->src),
 740                                        spec->dst ? ":" : "",
 741                                        spec->dst ? abbrev_branch(spec->dst) : "");
 742                         }
 743                 }
 744
 745                 free_remote_ref_states(&states);
 746         }
 747
 748         return result;
 749 }
 750
 751 static int prune(int argc, const char **argv)
 752 {
 753         int dry_run = 0, result = 0;
 754         struct option options[] = {
 755                 OPT_GROUP("prune specific options"),
 756                 OPT__DRY_RUN(&dry_run),
 757                 OPT_END()
 758         };
 759         struct ref_states states;
 760         const char *dangling_msg;
 761
 762         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 763
 764         if (argc < 1)
 765                 usage_with_options(builtin_remote_usage, options);
 766
 767         dangling_msg = (dry_run
 768                         ? " %s will become dangling!\n"
 769                         : " %s has become dangling!\n");
 770
 771         memset(&states, 0, sizeof(states));
 772         for (; argc; argc--, argv++) {
 773                 int i;
 774
 775                 get_remote_ref_states(*argv, &states, 1);
 776
 777                 if (states.stale.nr) {
 778                         printf("Pruning %s\n", *argv);
 779                         printf("URL: %s\n",
 780                                states.remote->url_nr
 781                                ? states.remote->url[0]
 782                                : "(no URL)");
 783                 }
 784
 785                 for (i = 0; i < states.stale.nr; i++) {
 786                         const char *refname = states.stale.items[i].util;
 787
 788                         if (!dry_run)
 789                                 result |= delete_ref(refname, NULL, 0);
 790
 791                         printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
 792                                abbrev_ref(refname, "refs/remotes/"));
 793                         warn_dangling_symref(dangling_msg, refname);
 794                 }
 795
 796                 free_remote_ref_states(&states);
 797         }
 798
 799         return result;
 800 }
 801
 802 static int get_one_remote_for_update(struct remote *remote, void *priv)
 803 {
 804         struct string_list *list = priv;
 805         if (!remote->skip_default_update)
 806                 string_list_append(remote->name, list);
 807         return 0;
 808 }
 809
 810 struct remote_group {
 811         const char *name;
 812         struct string_list *list;
 813 } remote_group;
 814
 815 static int get_remote_group(const char *key, const char *value, void *cb)
 816 {
 817         if (!prefixcmp(key, "remotes.") &&
 818                         !strcmp(key + 8, remote_group.name)) {
 819                 /* split list by white space */
 820                 int space = strcspn(value, " \t\n");
 821                 while (*value) {
 822                         if (space > 1)
 823                                 string_list_append(xstrndup(value, space),
 824                                                 remote_group.list);
 825                         value += space + (value[space] != '\0');
 826                         space = strcspn(value, " \t\n");
 827                 }
 828         }
 829
 830         return 0;
 831 }
 832
 833 static int update(int argc, const char **argv)
 834 {
 835         int i, result = 0;
 836         struct string_list list = { NULL, 0, 0, 0 };
 837         static const char *default_argv[] = { NULL, "default", NULL };
 838
 839         if (argc < 2) {
 840                 argc = 2;
 841                 argv = default_argv;
 842         }
 843
 844         remote_group.list = &list;
 845         for (i = 1; i < argc; i++) {
 846                 remote_group.name = argv[i];
 847                 result = git_config(get_remote_group, NULL);
 848         }
 849
 850         if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
 851                 result = for_each_remote(get_one_remote_for_update, &list);
 852
 853         for (i = 0; i < list.nr; i++)
 854                 result |= fetch_remote(list.items[i].string);
 855
 856         /* all names were strdup()ed or strndup()ed */
 857         list.strdup_strings = 1;
 858         string_list_clear(&list, 0);
 859
 860         return result;
 861 }
 862
 863 static int get_one_entry(struct remote *remote, void *priv)
 864 {
 865         struct string_list *list = priv;
 866
 867         if (remote->url_nr > 0) {
 868                 int i;
 869
 870                 for (i = 0; i < remote->url_nr; i++)
 871                         string_list_append(remote->name, list)->util = (void *)remote->url[i];
 872         } else
 873                 string_list_append(remote->name, list)->util = NULL;
 874
 875         return 0;
 876 }
 877
 878 static int show_all(void)
 879 {
 880         struct string_list list = { NULL, 0, 0 };
 881         int result = for_each_remote(get_one_entry, &list);
 882
 883         if (!result) {
 884                 int i;
 885
 886                 sort_string_list(&list);
 887                 for (i = 0; i < list.nr; i++) {
 888                         struct string_list_item *item = list.items + i;
 889                         if (verbose)
 890                                 printf("%s\t%s\n", item->string,
 891                                         item->util ? (const char *)item->util : "");
 892                         else {
 893                                 if (i && !strcmp((item - 1)->string, item->string))
 894                                         continue;
 895                                 printf("%s\n", item->string);
 896                         }
 897                 }
 898         }
 899         return result;
 900 }
 901
 902 int cmd_remote(int argc, const char **argv, const char *prefix)
 903 {
 904         struct option options[] = {
 905                 OPT__VERBOSE(&verbose),
 906                 OPT_END()
 907         };
 908         int result;
 909
 910         argc = parse_options(argc, argv, options, builtin_remote_usage,
 911                 PARSE_OPT_STOP_AT_NON_OPTION);
 912
 913         if (argc < 1)
 914                 result = show_all();
 915         else if (!strcmp(argv[0], "add"))
 916                 result = add(argc, argv);
 917         else if (!strcmp(argv[0], "rename"))
 918                 result = mv(argc, argv);
 919         else if (!strcmp(argv[0], "rm"))
 920                 result = rm(argc, argv);
 921         else if (!strcmp(argv[0], "show"))
 922                 result = show(argc, argv);
 923         else if (!strcmp(argv[0], "prune"))
 924                 result = prune(argc, argv);
 925         else if (!strcmp(argv[0], "update"))
 926                 result = update(argc, argv);
 927         else {
 928                 error("Unknown subcommand: %s", argv[0]);
 929                 usage_with_options(builtin_remote_usage, options);
 930         }
 931
 932         return result ? 1 : 0;
 933 }