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