git.oblomov.eu Git - git/blob - 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",
  12         "git remote add <name> <url>",
  13         "git remote rename <old> <new>",
  14         "git remote rm <name>",
  15         "git remote show <name>",
  16         "git remote prune <name>",
  17         "git remote 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 };
  46         printf("Updating %s\n", name);
  47         if (run_command_v_opt(argv, RUN_GIT_CMD))
  48                 return error("Could not fetch %s", name);
  49         return 0;
  50 }
  51
  52 static int add(int argc, const char **argv)
  53 {
  54         int fetch = 0, mirror = 0;
  55         struct string_list track = { NULL, 0, 0 };
  56         const char *master = NULL;
  57         struct remote *remote;
  58         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
  59         const char *name, *url;
  60         int i;
  61
  62         struct option options[] = {
  63                 OPT_GROUP("add specific options"),
  64                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
  65                 OPT_CALLBACK('t', "track", &track, "branch",
  66                         "branch(es) to track", opt_parse_track),
  67                 OPT_STRING('m', "master", &master, "branch", "master branch"),
  68                 OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
  69                 OPT_END()
  70         };
  71
  72         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
  73
  74         if (argc < 2)
  75                 usage_with_options(builtin_remote_usage, options);
  76
  77         name = argv[0];
  78         url = argv[1];
  79
  80         remote = remote_get(name);
  81         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
  82                         remote->fetch_refspec_nr))
  83                 die("remote %s already exists.", name);
  84
  85         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
  86         if (!valid_fetch_refspec(buf2.buf))
  87                 die("'%s' is not a valid remote name", name);
  88
  89         strbuf_addf(&buf, "remote.%s.url", name);
  90         if (git_config_set(buf.buf, url))
  91                 return 1;
  92
  93         strbuf_reset(&buf);
  94         strbuf_addf(&buf, "remote.%s.fetch", name);
  95
  96         if (track.nr == 0)
  97                 string_list_append("*", &track);
  98         for (i = 0; i < track.nr; i++) {
  99                 struct string_list_item *item = track.items + i;
 100
 101                 strbuf_reset(&buf2);
 102                 strbuf_addch(&buf2, '+');
 103                 if (mirror)
 104                         strbuf_addf(&buf2, "refs/%s:refs/%s",
 105                                         item->string, item->string);
 106                 else
 107                         strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
 108                                         item->string, name, item->string);
 109                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 110                         return 1;
 111         }
 112
 113         if (mirror) {
 114                 strbuf_reset(&buf);
 115                 strbuf_addf(&buf, "remote.%s.mirror", name);
 116                 if (git_config_set(buf.buf, "true"))
 117                         return 1;
 118         }
 119
 120         if (fetch && fetch_remote(name))
 121                 return 1;
 122
 123         if (master) {
 124                 strbuf_reset(&buf);
 125                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 126
 127                 strbuf_reset(&buf2);
 128                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 129
 130                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 131                         return error("Could not setup master '%s'", master);
 132         }
 133
 134         strbuf_release(&buf);
 135         strbuf_release(&buf2);
 136         string_list_clear(&track, 0);
 137
 138         return 0;
 139 }
 140
 141 struct branch_info {
 142         char *remote;
 143         struct string_list merge;
 144 };
 145
 146 static struct string_list branch_list;
 147
 148 static const char *abbrev_ref(const char *name, const char *prefix)
 149 {
 150         const char *abbrev = skip_prefix(name, prefix);
 151         if (abbrev)
 152                 return abbrev;
 153         return name;
 154 }
 155 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 156
 157 static int config_read_branches(const char *key, const char *value, void *cb)
 158 {
 159         if (!prefixcmp(key, "branch.")) {
 160                 char *name;
 161                 struct string_list_item *item;
 162                 struct branch_info *info;
 163                 enum { REMOTE, MERGE } type;
 164
 165                 key += 7;
 166                 if (!postfixcmp(key, ".remote")) {
 167                         name = xstrndup(key, strlen(key) - 7);
 168                         type = REMOTE;
 169                 } else if (!postfixcmp(key, ".merge")) {
 170                         name = xstrndup(key, strlen(key) - 6);
 171                         type = MERGE;
 172                 } else
 173                         return 0;
 174
 175                 item = string_list_insert(name, &branch_list);
 176
 177                 if (!item->util)
 178                         item->util = xcalloc(sizeof(struct branch_info), 1);
 179                 info = item->util;
 180                 if (type == REMOTE) {
 181                         if (info->remote)
 182                                 warning("more than one branch.%s", key);
 183                         info->remote = xstrdup(value);
 184                 } else {
 185                         char *space = strchr(value, ' ');
 186                         value = abbrev_branch(value);
 187                         while (space) {
 188                                 char *merge;
 189                                 merge = xstrndup(value, space - value);
 190                                 string_list_append(merge, &info->merge);
 191                                 value = abbrev_branch(space + 1);
 192                                 space = strchr(value, ' ');
 193                         }
 194                         string_list_append(xstrdup(value), &info->merge);
 195                 }
 196         }
 197         return 0;
 198 }
 199
 200 static void read_branches(void)
 201 {
 202         if (branch_list.nr)
 203                 return;
 204         git_config(config_read_branches, NULL);
 205         sort_string_list(&branch_list);
 206 }
 207
 208 struct ref_states {
 209         struct remote *remote;
 210         struct string_list new, stale, tracked;
 211 };
 212
 213 static int handle_one_branch(const char *refname,
 214         const unsigned char *sha1, int flags, void *cb_data)
 215 {
 216         struct ref_states *states = cb_data;
 217         struct refspec refspec;
 218
 219         memset(&refspec, 0, sizeof(refspec));
 220         refspec.dst = (char *)refname;
 221         if (!remote_find_tracking(states->remote, &refspec)) {
 222                 struct string_list_item *item;
 223                 const char *name = abbrev_branch(refspec.src);
 224                 /* symbolic refs pointing nowhere were handled already */
 225                 if ((flags & REF_ISSYMREF) ||
 226                                 unsorted_string_list_has_string(&states->tracked,
 227                                         name) ||
 228                                 unsorted_string_list_has_string(&states->new,
 229                                         name))
 230                         return 0;
 231                 item = string_list_append(name, &states->stale);
 232                 item->util = xstrdup(refname);
 233         }
 234         return 0;
 235 }
 236
 237 static int get_ref_states(const struct ref *ref, struct ref_states *states)
 238 {
 239         struct ref *fetch_map = NULL, **tail = &fetch_map;
 240         int i;
 241
 242         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 243                 if (get_fetch_map(ref, states->remote->fetch + i, &tail, 1))
 244                         die("Could not get fetch map for refspec %s",
 245                                 states->remote->fetch_refspec[i]);
 246
 247         states->new.strdup_strings = states->tracked.strdup_strings = 1;
 248         for (ref = fetch_map; ref; ref = ref->next) {
 249                 struct string_list *target = &states->tracked;
 250                 unsigned char sha1[20];
 251                 void *util = NULL;
 252
 253                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 254                         target = &states->new;
 255                 else {
 256                         target = &states->tracked;
 257                         if (hashcmp(sha1, ref->new_sha1))
 258                                 util = &states;
 259                 }
 260                 string_list_append(abbrev_branch(ref->name), target)->util = util;
 261         }
 262         free_refs(fetch_map);
 263
 264         for_each_ref(handle_one_branch, states);
 265         sort_string_list(&states->stale);
 266
 267         return 0;
 268 }
 269
 270 struct known_remote {
 271         struct known_remote *next;
 272         struct remote *remote;
 273 };
 274
 275 struct known_remotes {
 276         struct remote *to_delete;
 277         struct known_remote *list;
 278 };
 279
 280 static int add_known_remote(struct remote *remote, void *cb_data)
 281 {
 282         struct known_remotes *all = cb_data;
 283         struct known_remote *r;
 284
 285         if (!strcmp(all->to_delete->name, remote->name))
 286                 return 0;
 287
 288         r = xmalloc(sizeof(*r));
 289         r->remote = remote;
 290         r->next = all->list;
 291         all->list = r;
 292         return 0;
 293 }
 294
 295 struct branches_for_remote {
 296         struct remote *remote;
 297         struct string_list *branches;
 298         struct known_remotes *keep;
 299 };
 300
 301 static int add_branch_for_removal(const char *refname,
 302         const unsigned char *sha1, int flags, void *cb_data)
 303 {
 304         struct branches_for_remote *branches = cb_data;
 305         struct refspec refspec;
 306         struct string_list_item *item;
 307         struct known_remote *kr;
 308
 309         memset(&refspec, 0, sizeof(refspec));
 310         refspec.dst = (char *)refname;
 311         if (remote_find_tracking(branches->remote, &refspec))
 312                 return 0;
 313
 314         /* don't delete a branch if another remote also uses it */
 315         for (kr = branches->keep->list; kr; kr = kr->next) {
 316                 memset(&refspec, 0, sizeof(refspec));
 317                 refspec.dst = (char *)refname;
 318                 if (!remote_find_tracking(kr->remote, &refspec))
 319                         return 0;
 320         }
 321
 322         /* make sure that symrefs are deleted */
 323         if (flags & REF_ISSYMREF)
 324                 return unlink(git_path(refname));
 325
 326         item = string_list_append(refname, branches->branches);
 327         item->util = xmalloc(20);
 328         hashcpy(item->util, sha1);
 329
 330         return 0;
 331 }
 332
 333 struct rename_info {
 334         const char *old;
 335         const char *new;
 336         struct string_list *remote_branches;
 337 };
 338
 339 static int read_remote_branches(const char *refname,
 340         const unsigned char *sha1, int flags, void *cb_data)
 341 {
 342         struct rename_info *rename = cb_data;
 343         struct strbuf buf = STRBUF_INIT;
 344         struct string_list_item *item;
 345         int flag;
 346         unsigned char orig_sha1[20];
 347         const char *symref;
 348
 349         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 350         if(!prefixcmp(refname, buf.buf)) {
 351                 item = string_list_append(xstrdup(refname), rename->remote_branches);
 352                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
 353                 if (flag & REF_ISSYMREF)
 354                         item->util = xstrdup(symref);
 355                 else
 356                         item->util = NULL;
 357         }
 358
 359         return 0;
 360 }
 361
 362 static int migrate_file(struct remote *remote)
 363 {
 364         struct strbuf buf = STRBUF_INIT;
 365         int i;
 366         char *path = NULL;
 367
 368         strbuf_addf(&buf, "remote.%s.url", remote->name);
 369         for (i = 0; i < remote->url_nr; i++)
 370                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 371                         return error("Could not append '%s' to '%s'",
 372                                         remote->url[i], buf.buf);
 373         strbuf_reset(&buf);
 374         strbuf_addf(&buf, "remote.%s.push", remote->name);
 375         for (i = 0; i < remote->push_refspec_nr; i++)
 376                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 377                         return error("Could not append '%s' to '%s'",
 378                                         remote->push_refspec[i], buf.buf);
 379         strbuf_reset(&buf);
 380         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 381         for (i = 0; i < remote->fetch_refspec_nr; i++)
 382                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 383                         return error("Could not append '%s' to '%s'",
 384                                         remote->fetch_refspec[i], buf.buf);
 385         if (remote->origin == REMOTE_REMOTES)
 386                 path = git_path("remotes/%s", remote->name);
 387         else if (remote->origin == REMOTE_BRANCHES)
 388                 path = git_path("branches/%s", remote->name);
 389         if (path && unlink(path))
 390                 warning("failed to remove '%s'", path);
 391         return 0;
 392 }
 393
 394 static int mv(int argc, const char **argv)
 395 {
 396         struct option options[] = {
 397                 OPT_END()
 398         };
 399         struct remote *oldremote, *newremote;
 400         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 401         struct string_list remote_branches = { NULL, 0, 0, 0 };
 402         struct rename_info rename;
 403         int i;
 404
 405         if (argc != 3)
 406                 usage_with_options(builtin_remote_usage, options);
 407
 408         rename.old = argv[1];
 409         rename.new = argv[2];
 410         rename.remote_branches = &remote_branches;
 411
 412         oldremote = remote_get(rename.old);
 413         if (!oldremote)
 414                 die("No such remote: %s", rename.old);
 415
 416         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 417                 return migrate_file(oldremote);
 418
 419         newremote = remote_get(rename.new);
 420         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 421                 die("remote %s already exists.", rename.new);
 422
 423         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 424         if (!valid_fetch_refspec(buf.buf))
 425                 die("'%s' is not a valid remote name", rename.new);
 426
 427         strbuf_reset(&buf);
 428         strbuf_addf(&buf, "remote.%s", rename.old);
 429         strbuf_addf(&buf2, "remote.%s", rename.new);
 430         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 431                 return error("Could not rename config section '%s' to '%s'",
 432                                 buf.buf, buf2.buf);
 433
 434         strbuf_reset(&buf);
 435         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 436         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 437                 return error("Could not remove config section '%s'", buf.buf);
 438         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 439                 char *ptr;
 440
 441                 strbuf_reset(&buf2);
 442                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 443                 ptr = strstr(buf2.buf, rename.old);
 444                 if (ptr)
 445                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 446                                         rename.new, strlen(rename.new));
 447                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 448                         return error("Could not append '%s'", buf.buf);
 449         }
 450
 451         read_branches();
 452         for (i = 0; i < branch_list.nr; i++) {
 453                 struct string_list_item *item = branch_list.items + i;
 454                 struct branch_info *info = item->util;
 455                 if (info->remote && !strcmp(info->remote, rename.old)) {
 456                         strbuf_reset(&buf);
 457                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 458                         if (git_config_set(buf.buf, rename.new)) {
 459                                 return error("Could not set '%s'", buf.buf);
 460                         }
 461                 }
 462         }
 463
 464         /*
 465          * First remove symrefs, then rename the rest, finally create
 466          * the new symrefs.
 467          */
 468         for_each_ref(read_remote_branches, &rename);
 469         for (i = 0; i < remote_branches.nr; i++) {
 470                 struct string_list_item *item = remote_branches.items + i;
 471                 int flag = 0;
 472                 unsigned char sha1[20];
 473                 const char *symref;
 474
 475                 symref = resolve_ref(item->string, sha1, 1, &flag);
 476                 if (!(flag & REF_ISSYMREF))
 477                         continue;
 478                 if (delete_ref(item->string, NULL, REF_NODEREF))
 479                         die("deleting '%s' failed", item->string);
 480         }
 481         for (i = 0; i < remote_branches.nr; i++) {
 482                 struct string_list_item *item = remote_branches.items + i;
 483
 484                 if (item->util)
 485                         continue;
 486                 strbuf_reset(&buf);
 487                 strbuf_addstr(&buf, item->string);
 488                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 489                                 rename.new, strlen(rename.new));
 490                 strbuf_reset(&buf2);
 491                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 492                                 item->string, buf.buf);
 493                 if (rename_ref(item->string, buf.buf, buf2.buf))
 494                         die("renaming '%s' failed", item->string);
 495         }
 496         for (i = 0; i < remote_branches.nr; i++) {
 497                 struct string_list_item *item = remote_branches.items + i;
 498
 499                 if (!item->util)
 500                         continue;
 501                 strbuf_reset(&buf);
 502                 strbuf_addstr(&buf, item->string);
 503                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 504                                 rename.new, strlen(rename.new));
 505                 strbuf_reset(&buf2);
 506                 strbuf_addstr(&buf2, item->util);
 507                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 508                                 rename.new, strlen(rename.new));
 509                 strbuf_reset(&buf3);
 510                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 511                                 item->string, buf.buf);
 512                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 513                         die("creating '%s' failed", buf.buf);
 514         }
 515         return 0;
 516 }
 517
 518 static int remove_branches(struct string_list *branches)
 519 {
 520         int i, result = 0;
 521         for (i = 0; i < branches->nr; i++) {
 522                 struct string_list_item *item = branches->items + i;
 523                 const char *refname = item->string;
 524                 unsigned char *sha1 = item->util;
 525
 526                 if (delete_ref(refname, sha1, 0))
 527                         result |= error("Could not remove branch %s", refname);
 528         }
 529         return result;
 530 }
 531
 532 static int rm(int argc, const char **argv)
 533 {
 534         struct option options[] = {
 535                 OPT_END()
 536         };
 537         struct remote *remote;
 538         struct strbuf buf = STRBUF_INIT;
 539         struct known_remotes known_remotes = { NULL, NULL };
 540         struct string_list branches = { NULL, 0, 0, 1 };
 541         struct branches_for_remote cb_data = { NULL, &branches, &known_remotes };
 542         int i;
 543
 544         if (argc != 2)
 545                 usage_with_options(builtin_remote_usage, options);
 546
 547         remote = remote_get(argv[1]);
 548         if (!remote)
 549                 die("No such remote: %s", argv[1]);
 550
 551         known_remotes.to_delete = remote;
 552         for_each_remote(add_known_remote, &known_remotes);
 553
 554         strbuf_addf(&buf, "remote.%s", remote->name);
 555         if (git_config_rename_section(buf.buf, NULL) < 1)
 556                 return error("Could not remove config section '%s'", buf.buf);
 557
 558         read_branches();
 559         for (i = 0; i < branch_list.nr; i++) {
 560                 struct string_list_item *item = branch_list.items + i;
 561                 struct branch_info *info = item->util;
 562                 if (info->remote && !strcmp(info->remote, remote->name)) {
 563                         const char *keys[] = { "remote", "merge", NULL }, **k;
 564                         for (k = keys; *k; k++) {
 565                                 strbuf_reset(&buf);
 566                                 strbuf_addf(&buf, "branch.%s.%s",
 567                                                 item->string, *k);
 568                                 if (git_config_set(buf.buf, NULL)) {
 569                                         strbuf_release(&buf);
 570                                         return -1;
 571                                 }
 572                         }
 573                 }
 574         }
 575
 576         /*
 577          * We cannot just pass a function to for_each_ref() which deletes
 578          * the branches one by one, since for_each_ref() relies on cached
 579          * refs, which are invalidated when deleting a branch.
 580          */
 581         cb_data.remote = remote;
 582         i = for_each_ref(add_branch_for_removal, &cb_data);
 583         strbuf_release(&buf);
 584
 585         if (!i)
 586                 i = remove_branches(&branches);
 587         string_list_clear(&branches, 1);
 588
 589         return i;
 590 }
 591
 592 static void show_list(const char *title, struct string_list *list,
 593                       const char *extra_arg)
 594 {
 595         int i;
 596
 597         if (!list->nr)
 598                 return;
 599
 600         printf(title, list->nr > 1 ? "es" : "", extra_arg);
 601         printf("\n");
 602         for (i = 0; i < list->nr; i++)
 603                 printf("    %s\n", list->items[i].string);
 604 }
 605
 606 static int get_remote_ref_states(const char *name,
 607                                  struct ref_states *states,
 608                                  int query)
 609 {
 610         struct transport *transport;
 611         const struct ref *ref;
 612
 613         states->remote = remote_get(name);
 614         if (!states->remote)
 615                 return error("No such remote: %s", name);
 616
 617         read_branches();
 618
 619         if (query) {
 620                 transport = transport_get(NULL, states->remote->url_nr > 0 ?
 621                         states->remote->url[0] : NULL);
 622                 ref = transport_get_remote_refs(transport);
 623                 transport_disconnect(transport);
 624
 625                 get_ref_states(ref, states);
 626         }
 627
 628         return 0;
 629 }
 630
 631 static int append_ref_to_tracked_list(const char *refname,
 632         const unsigned char *sha1, int flags, void *cb_data)
 633 {
 634         struct ref_states *states = cb_data;
 635         struct refspec refspec;
 636
 637         memset(&refspec, 0, sizeof(refspec));
 638         refspec.dst = (char *)refname;
 639         if (!remote_find_tracking(states->remote, &refspec))
 640                 string_list_append(abbrev_branch(refspec.src), &states->tracked);
 641
 642         return 0;
 643 }
 644
 645 static int show(int argc, const char **argv)
 646 {
 647         int no_query = 0, result = 0;
 648         struct option options[] = {
 649                 OPT_GROUP("show specific options"),
 650                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
 651                 OPT_END()
 652         };
 653         struct ref_states states;
 654
 655         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 656
 657         if (argc < 1)
 658                 return show_all();
 659
 660         memset(&states, 0, sizeof(states));
 661         for (; argc; argc--, argv++) {
 662                 int i;
 663
 664                 get_remote_ref_states(*argv, &states, !no_query);
 665
 666                 printf("* remote %s\n  URL: %s\n", *argv,
 667                         states.remote->url_nr > 0 ?
 668                                 states.remote->url[0] : "(no URL)");
 669
 670                 for (i = 0; i < branch_list.nr; i++) {
 671                         struct string_list_item *branch = branch_list.items + i;
 672                         struct branch_info *info = branch->util;
 673                         int j;
 674
 675                         if (!info->merge.nr || strcmp(*argv, info->remote))
 676                                 continue;
 677                         printf("  Remote branch%s merged with 'git pull' "
 678                                 "while on branch %s\n   ",
 679                                 info->merge.nr > 1 ? "es" : "",
 680                                 branch->string);
 681                         for (j = 0; j < info->merge.nr; j++)
 682                                 printf(" %s", info->merge.items[j].string);
 683                         printf("\n");
 684                 }
 685
 686                 if (!no_query) {
 687                         show_list("  New remote branch%s (next fetch "
 688                                 "will store in remotes/%s)",
 689                                 &states.new, states.remote->name);
 690                         show_list("  Stale tracking branch%s (use 'git remote "
 691                                 "prune')", &states.stale, "");
 692                 }
 693
 694                 if (no_query)
 695                         for_each_ref(append_ref_to_tracked_list, &states);
 696                 show_list("  Tracked remote branch%s", &states.tracked, "");
 697
 698                 if (states.remote->push_refspec_nr) {
 699                         printf("  Local branch%s pushed with 'git push'\n",
 700                                 states.remote->push_refspec_nr > 1 ?
 701                                         "es" : "");
 702                         for (i = 0; i < states.remote->push_refspec_nr; i++) {
 703                                 struct refspec *spec = states.remote->push + i;
 704                                 printf("    %s%s%s%s\n",
 705                                        spec->force ? "+" : "",
 706                                        abbrev_branch(spec->src),
 707                                        spec->dst ? ":" : "",
 708                                        spec->dst ? abbrev_branch(spec->dst) : "");
 709                         }
 710                 }
 711
 712                 /* NEEDSWORK: free remote */
 713                 string_list_clear(&states.new, 0);
 714                 string_list_clear(&states.stale, 0);
 715                 string_list_clear(&states.tracked, 0);
 716         }
 717
 718         return result;
 719 }
 720
 721 static int prune(int argc, const char **argv)
 722 {
 723         int dry_run = 0, result = 0;
 724         struct option options[] = {
 725                 OPT_GROUP("prune specific options"),
 726                 OPT__DRY_RUN(&dry_run),
 727                 OPT_END()
 728         };
 729         struct ref_states states;
 730
 731         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 732
 733         if (argc < 1)
 734                 usage_with_options(builtin_remote_usage, options);
 735
 736         memset(&states, 0, sizeof(states));
 737         for (; argc; argc--, argv++) {
 738                 int i;
 739
 740                 get_remote_ref_states(*argv, &states, 1);
 741
 742                 if (states.stale.nr) {
 743                         printf("Pruning %s\n", *argv);
 744                         printf("URL: %s\n",
 745                                states.remote->url_nr
 746                                ? states.remote->url[0]
 747                                : "(no URL)");
 748                 }
 749
 750                 for (i = 0; i < states.stale.nr; i++) {
 751                         const char *refname = states.stale.items[i].util;
 752
 753                         if (!dry_run)
 754                                 result |= delete_ref(refname, NULL, 0);
 755
 756                         printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
 757                                abbrev_ref(refname, "refs/remotes/"));
 758                 }
 759
 760                 /* NEEDSWORK: free remote */
 761                 string_list_clear(&states.new, 0);
 762                 string_list_clear(&states.stale, 0);
 763                 string_list_clear(&states.tracked, 0);
 764         }
 765
 766         return result;
 767 }
 768
 769 static int get_one_remote_for_update(struct remote *remote, void *priv)
 770 {
 771         struct string_list *list = priv;
 772         if (!remote->skip_default_update)
 773                 string_list_append(xstrdup(remote->name), list);
 774         return 0;
 775 }
 776
 777 struct remote_group {
 778         const char *name;
 779         struct string_list *list;
 780 } remote_group;
 781
 782 static int get_remote_group(const char *key, const char *value, void *cb)
 783 {
 784         if (!prefixcmp(key, "remotes.") &&
 785                         !strcmp(key + 8, remote_group.name)) {
 786                 /* split list by white space */
 787                 int space = strcspn(value, " \t\n");
 788                 while (*value) {
 789                         if (space > 1)
 790                                 string_list_append(xstrndup(value, space),
 791                                                 remote_group.list);
 792                         value += space + (value[space] != '\0');
 793                         space = strcspn(value, " \t\n");
 794                 }
 795         }
 796
 797         return 0;
 798 }
 799
 800 static int update(int argc, const char **argv)
 801 {
 802         int i, result = 0;
 803         struct string_list list = { NULL, 0, 0, 0 };
 804         static const char *default_argv[] = { NULL, "default", NULL };
 805
 806         if (argc < 2) {
 807                 argc = 2;
 808                 argv = default_argv;
 809         }
 810
 811         remote_group.list = &list;
 812         for (i = 1; i < argc; i++) {
 813                 remote_group.name = argv[i];
 814                 result = git_config(get_remote_group, NULL);
 815         }
 816
 817         if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
 818                 result = for_each_remote(get_one_remote_for_update, &list);
 819
 820         for (i = 0; i < list.nr; i++)
 821                 result |= fetch_remote(list.items[i].string);
 822
 823         /* all names were strdup()ed or strndup()ed */
 824         list.strdup_strings = 1;
 825         string_list_clear(&list, 0);
 826
 827         return result;
 828 }
 829
 830 static int get_one_entry(struct remote *remote, void *priv)
 831 {
 832         struct string_list *list = priv;
 833
 834         if (remote->url_nr > 0) {
 835                 int i;
 836
 837                 for (i = 0; i < remote->url_nr; i++)
 838                         string_list_append(remote->name, list)->util = (void *)remote->url[i];
 839         } else
 840                 string_list_append(remote->name, list)->util = NULL;
 841
 842         return 0;
 843 }
 844
 845 static int show_all(void)
 846 {
 847         struct string_list list = { NULL, 0, 0 };
 848         int result = for_each_remote(get_one_entry, &list);
 849
 850         if (!result) {
 851                 int i;
 852
 853                 sort_string_list(&list);
 854                 for (i = 0; i < list.nr; i++) {
 855                         struct string_list_item *item = list.items + i;
 856                         if (verbose)
 857                                 printf("%s\t%s\n", item->string,
 858                                         item->util ? (const char *)item->util : "");
 859                         else {
 860                                 if (i && !strcmp((item - 1)->string, item->string))
 861                                         continue;
 862                                 printf("%s\n", item->string);
 863                         }
 864                 }
 865         }
 866         return result;
 867 }
 868
 869 int cmd_remote(int argc, const char **argv, const char *prefix)
 870 {
 871         struct option options[] = {
 872                 OPT__VERBOSE(&verbose),
 873                 OPT_END()
 874         };
 875         int result;
 876
 877         argc = parse_options(argc, argv, options, builtin_remote_usage,
 878                 PARSE_OPT_STOP_AT_NON_OPTION);
 879
 880         if (argc < 1)
 881                 result = show_all();
 882         else if (!strcmp(argv[0], "add"))
 883                 result = add(argc, argv);
 884         else if (!strcmp(argv[0], "rename"))
 885                 result = mv(argc, argv);
 886         else if (!strcmp(argv[0], "rm"))
 887                 result = rm(argc, argv);
 888         else if (!strcmp(argv[0], "show"))
 889                 result = show(argc, argv);
 890         else if (!strcmp(argv[0], "prune"))
 891                 result = prune(argc, argv);
 892         else if (!strcmp(argv[0], "update"))
 893                 result = update(argc, argv);
 894         else {
 895                 error("Unknown subcommand: %s", argv[0]);
 896                 usage_with_options(builtin_remote_usage, options);
 897         }
 898
 899         return result ? 1 : 0;
 900 }