Andrew's git / gitweb.git / builtin-remote.c
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builtin-remote.con commit test: do not LoadModule log_config_module unconditionally (7d59cee)
   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
  10static 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
  21static int verbose;
  22
  23static int show_all(void);
  24
  25static 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
  33static 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
  43static 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
  56static 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
 145struct branch_info {
 146        char *remote;
 147        struct string_list merge;
 148};
 149
 150static struct string_list branch_list;
 151
 152static 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
 161static 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)
 186                                warning("more than one branch.%s", key);
 187                        info->remote = 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
 204static void read_branches(void)
 205{
 206        if (branch_list.nr)
 207                return;
 208        git_config(config_read_branches, NULL);
 209        sort_string_list(&branch_list);
 210}
 211
 212struct ref_states {
 213        struct remote *remote;
 214        struct string_list new, stale, tracked;
 215};
 216
 217static int handle_one_branch(const char *refname,
 218        const unsigned char *sha1, int flags, void *cb_data)
 219{
 220        struct ref_states *states = cb_data;
 221        struct refspec refspec;
 222
 223        memset(&refspec, 0, sizeof(refspec));
 224        refspec.dst = (char *)refname;
 225        if (!remote_find_tracking(states->remote, &refspec)) {
 226                struct string_list_item *item;
 227                const char *name = abbrev_branch(refspec.src);
 228                /* symbolic refs pointing nowhere were handled already */
 229                if ((flags & REF_ISSYMREF) ||
 230                                unsorted_string_list_has_string(&states->tracked,
 231                                        name) ||
 232                                unsorted_string_list_has_string(&states->new,
 233                                        name))
 234                        return 0;
 235                item = string_list_append(name, &states->stale);
 236                item->util = xstrdup(refname);
 237        }
 238        return 0;
 239}
 240
 241static int get_ref_states(const struct ref *ref, struct ref_states *states)
 242{
 243        struct ref *fetch_map = NULL, **tail = &fetch_map;
 244        int i;
 245
 246        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 247                if (get_fetch_map(ref, states->remote->fetch + i, &tail, 1))
 248                        die("Could not get fetch map for refspec %s",
 249                                states->remote->fetch_refspec[i]);
 250
 251        states->new.strdup_strings = states->tracked.strdup_strings = 1;
 252        for (ref = fetch_map; ref; ref = ref->next) {
 253                struct string_list *target = &states->tracked;
 254                unsigned char sha1[20];
 255                void *util = NULL;
 256
 257                if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 258                        target = &states->new;
 259                else {
 260                        target = &states->tracked;
 261                        if (hashcmp(sha1, ref->new_sha1))
 262                                util = &states;
 263                }
 264                string_list_append(abbrev_branch(ref->name), target)->util = util;
 265        }
 266        free_refs(fetch_map);
 267
 268        for_each_ref(handle_one_branch, states);
 269        sort_string_list(&states->stale);
 270
 271        return 0;
 272}
 273
 274struct known_remote {
 275        struct known_remote *next;
 276        struct remote *remote;
 277};
 278
 279struct known_remotes {
 280        struct remote *to_delete;
 281        struct known_remote *list;
 282};
 283
 284static int add_known_remote(struct remote *remote, void *cb_data)
 285{
 286        struct known_remotes *all = cb_data;
 287        struct known_remote *r;
 288
 289        if (!strcmp(all->to_delete->name, remote->name))
 290                return 0;
 291
 292        r = xmalloc(sizeof(*r));
 293        r->remote = remote;
 294        r->next = all->list;
 295        all->list = r;
 296        return 0;
 297}
 298
 299struct branches_for_remote {
 300        struct remote *remote;
 301        struct string_list *branches, *skipped;
 302        struct known_remotes *keep;
 303};
 304
 305static int add_branch_for_removal(const char *refname,
 306        const unsigned char *sha1, int flags, void *cb_data)
 307{
 308        struct branches_for_remote *branches = cb_data;
 309        struct refspec refspec;
 310        struct string_list_item *item;
 311        struct known_remote *kr;
 312
 313        memset(&refspec, 0, sizeof(refspec));
 314        refspec.dst = (char *)refname;
 315        if (remote_find_tracking(branches->remote, &refspec))
 316                return 0;
 317
 318        /* don't delete a branch if another remote also uses it */
 319        for (kr = branches->keep->list; kr; kr = kr->next) {
 320                memset(&refspec, 0, sizeof(refspec));
 321                refspec.dst = (char *)refname;
 322                if (!remote_find_tracking(kr->remote, &refspec))
 323                        return 0;
 324        }
 325
 326        /* don't delete non-remote refs */
 327        if (prefixcmp(refname, "refs/remotes")) {
 328                /* advise user how to delete local branches */
 329                if (!prefixcmp(refname, "refs/heads/"))
 330                        string_list_append(abbrev_branch(refname),
 331                                           branches->skipped);
 332                /* silently skip over other non-remote refs */
 333                return 0;
 334        }
 335
 336        /* make sure that symrefs are deleted */
 337        if (flags & REF_ISSYMREF)
 338                return unlink(git_path("%s", refname));
 339
 340        item = string_list_append(refname, branches->branches);
 341        item->util = xmalloc(20);
 342        hashcpy(item->util, sha1);
 343
 344        return 0;
 345}
 346
 347struct rename_info {
 348        const char *old;
 349        const char *new;
 350        struct string_list *remote_branches;
 351};
 352
 353static int read_remote_branches(const char *refname,
 354        const unsigned char *sha1, int flags, void *cb_data)
 355{
 356        struct rename_info *rename = cb_data;
 357        struct strbuf buf = STRBUF_INIT;
 358        struct string_list_item *item;
 359        int flag;
 360        unsigned char orig_sha1[20];
 361        const char *symref;
 362
 363        strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 364        if(!prefixcmp(refname, buf.buf)) {
 365                item = string_list_append(xstrdup(refname), rename->remote_branches);
 366                symref = resolve_ref(refname, orig_sha1, 1, &flag);
 367                if (flag & REF_ISSYMREF)
 368                        item->util = xstrdup(symref);
 369                else
 370                        item->util = NULL;
 371        }
 372
 373        return 0;
 374}
 375
 376static int migrate_file(struct remote *remote)
 377{
 378        struct strbuf buf = STRBUF_INIT;
 379        int i;
 380        char *path = NULL;
 381
 382        strbuf_addf(&buf, "remote.%s.url", remote->name);
 383        for (i = 0; i < remote->url_nr; i++)
 384                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 385                        return error("Could not append '%s' to '%s'",
 386                                        remote->url[i], buf.buf);
 387        strbuf_reset(&buf);
 388        strbuf_addf(&buf, "remote.%s.push", remote->name);
 389        for (i = 0; i < remote->push_refspec_nr; i++)
 390                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 391                        return error("Could not append '%s' to '%s'",
 392                                        remote->push_refspec[i], buf.buf);
 393        strbuf_reset(&buf);
 394        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 395        for (i = 0; i < remote->fetch_refspec_nr; i++)
 396                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 397                        return error("Could not append '%s' to '%s'",
 398                                        remote->fetch_refspec[i], buf.buf);
 399        if (remote->origin == REMOTE_REMOTES)
 400                path = git_path("remotes/%s", remote->name);
 401        else if (remote->origin == REMOTE_BRANCHES)
 402                path = git_path("branches/%s", remote->name);
 403        if (path && unlink(path))
 404                warning("failed to remove '%s'", path);
 405        return 0;
 406}
 407
 408static int mv(int argc, const char **argv)
 409{
 410        struct option options[] = {
 411                OPT_END()
 412        };
 413        struct remote *oldremote, *newremote;
 414        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 415        struct string_list remote_branches = { NULL, 0, 0, 0 };
 416        struct rename_info rename;
 417        int i;
 418
 419        if (argc != 3)
 420                usage_with_options(builtin_remote_usage, options);
 421
 422        rename.old = argv[1];
 423        rename.new = argv[2];
 424        rename.remote_branches = &remote_branches;
 425
 426        oldremote = remote_get(rename.old);
 427        if (!oldremote)
 428                die("No such remote: %s", rename.old);
 429
 430        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 431                return migrate_file(oldremote);
 432
 433        newremote = remote_get(rename.new);
 434        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 435                die("remote %s already exists.", rename.new);
 436
 437        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 438        if (!valid_fetch_refspec(buf.buf))
 439                die("'%s' is not a valid remote name", rename.new);
 440
 441        strbuf_reset(&buf);
 442        strbuf_addf(&buf, "remote.%s", rename.old);
 443        strbuf_addf(&buf2, "remote.%s", rename.new);
 444        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 445                return error("Could not rename config section '%s' to '%s'",
 446                                buf.buf, buf2.buf);
 447
 448        strbuf_reset(&buf);
 449        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 450        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 451                return error("Could not remove config section '%s'", buf.buf);
 452        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 453                char *ptr;
 454
 455                strbuf_reset(&buf2);
 456                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 457                ptr = strstr(buf2.buf, rename.old);
 458                if (ptr)
 459                        strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 460                                        rename.new, strlen(rename.new));
 461                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 462                        return error("Could not append '%s'", buf.buf);
 463        }
 464
 465        read_branches();
 466        for (i = 0; i < branch_list.nr; i++) {
 467                struct string_list_item *item = branch_list.items + i;
 468                struct branch_info *info = item->util;
 469                if (info->remote && !strcmp(info->remote, rename.old)) {
 470                        strbuf_reset(&buf);
 471                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 472                        if (git_config_set(buf.buf, rename.new)) {
 473                                return error("Could not set '%s'", buf.buf);
 474                        }
 475                }
 476        }
 477
 478        /*
 479         * First remove symrefs, then rename the rest, finally create
 480         * the new symrefs.
 481         */
 482        for_each_ref(read_remote_branches, &rename);
 483        for (i = 0; i < remote_branches.nr; i++) {
 484                struct string_list_item *item = remote_branches.items + i;
 485                int flag = 0;
 486                unsigned char sha1[20];
 487
 488                resolve_ref(item->string, sha1, 1, &flag);
 489                if (!(flag & REF_ISSYMREF))
 490                        continue;
 491                if (delete_ref(item->string, NULL, REF_NODEREF))
 492                        die("deleting '%s' failed", item->string);
 493        }
 494        for (i = 0; i < remote_branches.nr; i++) {
 495                struct string_list_item *item = remote_branches.items + i;
 496
 497                if (item->util)
 498                        continue;
 499                strbuf_reset(&buf);
 500                strbuf_addstr(&buf, item->string);
 501                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 502                                rename.new, strlen(rename.new));
 503                strbuf_reset(&buf2);
 504                strbuf_addf(&buf2, "remote: renamed %s to %s",
 505                                item->string, buf.buf);
 506                if (rename_ref(item->string, buf.buf, buf2.buf))
 507                        die("renaming '%s' failed", item->string);
 508        }
 509        for (i = 0; i < remote_branches.nr; i++) {
 510                struct string_list_item *item = remote_branches.items + i;
 511
 512                if (!item->util)
 513                        continue;
 514                strbuf_reset(&buf);
 515                strbuf_addstr(&buf, item->string);
 516                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 517                                rename.new, strlen(rename.new));
 518                strbuf_reset(&buf2);
 519                strbuf_addstr(&buf2, item->util);
 520                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 521                                rename.new, strlen(rename.new));
 522                strbuf_reset(&buf3);
 523                strbuf_addf(&buf3, "remote: renamed %s to %s",
 524                                item->string, buf.buf);
 525                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 526                        die("creating '%s' failed", buf.buf);
 527        }
 528        return 0;
 529}
 530
 531static int remove_branches(struct string_list *branches)
 532{
 533        int i, result = 0;
 534        for (i = 0; i < branches->nr; i++) {
 535                struct string_list_item *item = branches->items + i;
 536                const char *refname = item->string;
 537                unsigned char *sha1 = item->util;
 538
 539                if (delete_ref(refname, sha1, 0))
 540                        result |= error("Could not remove branch %s", refname);
 541        }
 542        return result;
 543}
 544
 545static int rm(int argc, const char **argv)
 546{
 547        struct option options[] = {
 548                OPT_END()
 549        };
 550        struct remote *remote;
 551        struct strbuf buf = STRBUF_INIT;
 552        struct known_remotes known_remotes = { NULL, NULL };
 553        struct string_list branches = { NULL, 0, 0, 1 };
 554        struct string_list skipped = { NULL, 0, 0, 1 };
 555        struct branches_for_remote cb_data = {
 556                NULL, &branches, &skipped, &known_remotes
 557        };
 558        int i, result;
 559
 560        if (argc != 2)
 561                usage_with_options(builtin_remote_usage, options);
 562
 563        remote = remote_get(argv[1]);
 564        if (!remote)
 565                die("No such remote: %s", argv[1]);
 566
 567        known_remotes.to_delete = remote;
 568        for_each_remote(add_known_remote, &known_remotes);
 569
 570        strbuf_addf(&buf, "remote.%s", remote->name);
 571        if (git_config_rename_section(buf.buf, NULL) < 1)
 572                return error("Could not remove config section '%s'", buf.buf);
 573
 574        read_branches();
 575        for (i = 0; i < branch_list.nr; i++) {
 576                struct string_list_item *item = branch_list.items + i;
 577                struct branch_info *info = item->util;
 578                if (info->remote && !strcmp(info->remote, remote->name)) {
 579                        const char *keys[] = { "remote", "merge", NULL }, **k;
 580                        for (k = keys; *k; k++) {
 581                                strbuf_reset(&buf);
 582                                strbuf_addf(&buf, "branch.%s.%s",
 583                                                item->string, *k);
 584                                if (git_config_set(buf.buf, NULL)) {
 585                                        strbuf_release(&buf);
 586                                        return -1;
 587                                }
 588                        }
 589                }
 590        }
 591
 592        /*
 593         * We cannot just pass a function to for_each_ref() which deletes
 594         * the branches one by one, since for_each_ref() relies on cached
 595         * refs, which are invalidated when deleting a branch.
 596         */
 597        cb_data.remote = remote;
 598        result = for_each_ref(add_branch_for_removal, &cb_data);
 599        strbuf_release(&buf);
 600
 601        if (!result)
 602                result = remove_branches(&branches);
 603        string_list_clear(&branches, 1);
 604
 605        if (skipped.nr) {
 606                fprintf(stderr, skipped.nr == 1 ?
 607                        "Note: A non-remote branch was not removed; "
 608                        "to delete it, use:\n" :
 609                        "Note: Non-remote branches were not removed; "
 610                        "to delete them, use:\n");
 611                for (i = 0; i < skipped.nr; i++)
 612                        fprintf(stderr, "  git branch -d %s\n",
 613                                skipped.items[i].string);
 614        }
 615        string_list_clear(&skipped, 0);
 616
 617        return result;
 618}
 619
 620static void show_list(const char *title, struct string_list *list,
 621                      const char *extra_arg)
 622{
 623        int i;
 624
 625        if (!list->nr)
 626                return;
 627
 628        printf(title, list->nr > 1 ? "es" : "", extra_arg);
 629        printf("\n");
 630        for (i = 0; i < list->nr; i++)
 631                printf("    %s\n", list->items[i].string);
 632}
 633
 634static int get_remote_ref_states(const char *name,
 635                                 struct ref_states *states,
 636                                 int query)
 637{
 638        struct transport *transport;
 639        const struct ref *ref;
 640
 641        states->remote = remote_get(name);
 642        if (!states->remote)
 643                return error("No such remote: %s", name);
 644
 645        read_branches();
 646
 647        if (query) {
 648                transport = transport_get(NULL, states->remote->url_nr > 0 ?
 649                        states->remote->url[0] : NULL);
 650                ref = transport_get_remote_refs(transport);
 651                transport_disconnect(transport);
 652
 653                get_ref_states(ref, states);
 654        }
 655
 656        return 0;
 657}
 658
 659static int append_ref_to_tracked_list(const char *refname,
 660        const unsigned char *sha1, int flags, void *cb_data)
 661{
 662        struct ref_states *states = cb_data;
 663        struct refspec refspec;
 664
 665        memset(&refspec, 0, sizeof(refspec));
 666        refspec.dst = (char *)refname;
 667        if (!remote_find_tracking(states->remote, &refspec))
 668                string_list_append(abbrev_branch(refspec.src), &states->tracked);
 669
 670        return 0;
 671}
 672
 673static int show(int argc, const char **argv)
 674{
 675        int no_query = 0, result = 0;
 676        struct option options[] = {
 677                OPT_GROUP("show specific options"),
 678                OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
 679                OPT_END()
 680        };
 681        struct ref_states states;
 682
 683        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 684
 685        if (argc < 1)
 686                return show_all();
 687
 688        memset(&states, 0, sizeof(states));
 689        for (; argc; argc--, argv++) {
 690                int i;
 691
 692                get_remote_ref_states(*argv, &states, !no_query);
 693
 694                printf("* remote %s\n  URL: %s\n", *argv,
 695                        states.remote->url_nr > 0 ?
 696                                states.remote->url[0] : "(no URL)");
 697
 698                for (i = 0; i < branch_list.nr; i++) {
 699                        struct string_list_item *branch = branch_list.items + i;
 700                        struct branch_info *info = branch->util;
 701                        int j;
 702
 703                        if (!info->merge.nr || strcmp(*argv, info->remote))
 704                                continue;
 705                        printf("  Remote branch%s merged with 'git pull' "
 706                                "while on branch %s\n   ",
 707                                info->merge.nr > 1 ? "es" : "",
 708                                branch->string);
 709                        for (j = 0; j < info->merge.nr; j++)
 710                                printf(" %s", info->merge.items[j].string);
 711                        printf("\n");
 712                }
 713
 714                if (!no_query) {
 715                        show_list("  New remote branch%s (next fetch "
 716                                "will store in remotes/%s)",
 717                                &states.new, states.remote->name);
 718                        show_list("  Stale tracking branch%s (use 'git remote "
 719                                "prune')", &states.stale, "");
 720                }
 721
 722                if (no_query)
 723                        for_each_ref(append_ref_to_tracked_list, &states);
 724                show_list("  Tracked remote branch%s", &states.tracked, "");
 725
 726                if (states.remote->push_refspec_nr) {
 727                        printf("  Local branch%s pushed with 'git push'\n",
 728                                states.remote->push_refspec_nr > 1 ?
 729                                        "es" : "");
 730                        for (i = 0; i < states.remote->push_refspec_nr; i++) {
 731                                struct refspec *spec = states.remote->push + i;
 732                                printf("    %s%s%s%s\n",
 733                                       spec->force ? "+" : "",
 734                                       abbrev_branch(spec->src),
 735                                       spec->dst ? ":" : "",
 736                                       spec->dst ? abbrev_branch(spec->dst) : "");
 737                        }
 738                }
 739
 740                /* NEEDSWORK: free remote */
 741                string_list_clear(&states.new, 0);
 742                string_list_clear(&states.stale, 0);
 743                string_list_clear(&states.tracked, 0);
 744        }
 745
 746        return result;
 747}
 748
 749static int prune(int argc, const char **argv)
 750{
 751        int dry_run = 0, result = 0;
 752        struct option options[] = {
 753                OPT_GROUP("prune specific options"),
 754                OPT__DRY_RUN(&dry_run),
 755                OPT_END()
 756        };
 757        struct ref_states states;
 758        const char *dangling_msg;
 759
 760        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 761
 762        if (argc < 1)
 763                usage_with_options(builtin_remote_usage, options);
 764
 765        dangling_msg = (dry_run
 766                        ? " %s will become dangling!\n"
 767                        : " %s has become dangling!\n");
 768
 769        memset(&states, 0, sizeof(states));
 770        for (; argc; argc--, argv++) {
 771                int i;
 772
 773                get_remote_ref_states(*argv, &states, 1);
 774
 775                if (states.stale.nr) {
 776                        printf("Pruning %s\n", *argv);
 777                        printf("URL: %s\n",
 778                               states.remote->url_nr
 779                               ? states.remote->url[0]
 780                               : "(no URL)");
 781                }
 782
 783                for (i = 0; i < states.stale.nr; i++) {
 784                        const char *refname = states.stale.items[i].util;
 785
 786                        if (!dry_run)
 787                                result |= delete_ref(refname, NULL, 0);
 788
 789                        printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
 790                               abbrev_ref(refname, "refs/remotes/"));
 791                        warn_dangling_symref(dangling_msg, refname);
 792                }
 793
 794                /* NEEDSWORK: free remote */
 795                string_list_clear(&states.new, 0);
 796                string_list_clear(&states.stale, 0);
 797                string_list_clear(&states.tracked, 0);
 798        }
 799
 800        return result;
 801}
 802
 803static int get_one_remote_for_update(struct remote *remote, void *priv)
 804{
 805        struct string_list *list = priv;
 806        if (!remote->skip_default_update)
 807                string_list_append(remote->name, list);
 808        return 0;
 809}
 810
 811struct remote_group {
 812        const char *name;
 813        struct string_list *list;
 814} remote_group;
 815
 816static int get_remote_group(const char *key, const char *value, void *cb)
 817{
 818        if (!prefixcmp(key, "remotes.") &&
 819                        !strcmp(key + 8, remote_group.name)) {
 820                /* split list by white space */
 821                int space = strcspn(value, " \t\n");
 822                while (*value) {
 823                        if (space > 1)
 824                                string_list_append(xstrndup(value, space),
 825                                                remote_group.list);
 826                        value += space + (value[space] != '\0');
 827                        space = strcspn(value, " \t\n");
 828                }
 829        }
 830
 831        return 0;
 832}
 833
 834static int update(int argc, const char **argv)
 835{
 836        int i, result = 0;
 837        struct string_list list = { NULL, 0, 0, 0 };
 838        static const char *default_argv[] = { NULL, "default", NULL };
 839
 840        if (argc < 2) {
 841                argc = 2;
 842                argv = default_argv;
 843        }
 844
 845        remote_group.list = &list;
 846        for (i = 1; i < argc; i++) {
 847                remote_group.name = argv[i];
 848                result = git_config(get_remote_group, NULL);
 849        }
 850
 851        if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
 852                result = for_each_remote(get_one_remote_for_update, &list);
 853
 854        for (i = 0; i < list.nr; i++)
 855                result |= fetch_remote(list.items[i].string);
 856
 857        /* all names were strdup()ed or strndup()ed */
 858        list.strdup_strings = 1;
 859        string_list_clear(&list, 0);
 860
 861        return result;
 862}
 863
 864static int get_one_entry(struct remote *remote, void *priv)
 865{
 866        struct string_list *list = priv;
 867
 868        if (remote->url_nr > 0) {
 869                int i;
 870
 871                for (i = 0; i < remote->url_nr; i++)
 872                        string_list_append(remote->name, list)->util = (void *)remote->url[i];
 873        } else
 874                string_list_append(remote->name, list)->util = NULL;
 875
 876        return 0;
 877}
 878
 879static int show_all(void)
 880{
 881        struct string_list list = { NULL, 0, 0 };
 882        int result = for_each_remote(get_one_entry, &list);
 883
 884        if (!result) {
 885                int i;
 886
 887                sort_string_list(&list);
 888                for (i = 0; i < list.nr; i++) {
 889                        struct string_list_item *item = list.items + i;
 890                        if (verbose)
 891                                printf("%s\t%s\n", item->string,
 892                                        item->util ? (const char *)item->util : "");
 893                        else {
 894                                if (i && !strcmp((item - 1)->string, item->string))
 895                                        continue;
 896                                printf("%s\n", item->string);
 897                        }
 898                }
 899        }
 900        return result;
 901}
 902
 903int cmd_remote(int argc, const char **argv, const char *prefix)
 904{
 905        struct option options[] = {
 906                OPT__VERBOSE(&verbose),
 907                OPT_END()
 908        };
 909        int result;
 910
 911        argc = parse_options(argc, argv, options, builtin_remote_usage,
 912                PARSE_OPT_STOP_AT_NON_OPTION);
 913
 914        if (argc < 1)
 915                result = show_all();
 916        else if (!strcmp(argv[0], "add"))
 917                result = add(argc, argv);
 918        else if (!strcmp(argv[0], "rename"))
 919                result = mv(argc, argv);
 920        else if (!strcmp(argv[0], "rm"))
 921                result = rm(argc, argv);
 922        else if (!strcmp(argv[0], "show"))
 923                result = show(argc, argv);
 924        else if (!strcmp(argv[0], "prune"))
 925                result = prune(argc, argv);
 926        else if (!strcmp(argv[0], "update"))
 927                result = update(argc, argv);
 928        else {
 929                error("Unknown subcommand: %s", argv[0]);
 930                usage_with_options(builtin_remote_usage, options);
 931        }
 932
 933        return result ? 1 : 0;
 934}