Andrew's git / gitweb.git / builtin-remote.c
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builtin-remote.con commit git-revert documentation: refer to new HOWTO on reverting faulty merges (b80b5d6)
   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;
 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        /* make sure that symrefs are deleted */
 327        if (flags & REF_ISSYMREF)
 328                return unlink(git_path("%s", refname));
 329
 330        item = string_list_append(refname, branches->branches);
 331        item->util = xmalloc(20);
 332        hashcpy(item->util, sha1);
 333
 334        return 0;
 335}
 336
 337struct rename_info {
 338        const char *old;
 339        const char *new;
 340        struct string_list *remote_branches;
 341};
 342
 343static int read_remote_branches(const char *refname,
 344        const unsigned char *sha1, int flags, void *cb_data)
 345{
 346        struct rename_info *rename = cb_data;
 347        struct strbuf buf = STRBUF_INIT;
 348        struct string_list_item *item;
 349        int flag;
 350        unsigned char orig_sha1[20];
 351        const char *symref;
 352
 353        strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 354        if(!prefixcmp(refname, buf.buf)) {
 355                item = string_list_append(xstrdup(refname), rename->remote_branches);
 356                symref = resolve_ref(refname, orig_sha1, 1, &flag);
 357                if (flag & REF_ISSYMREF)
 358                        item->util = xstrdup(symref);
 359                else
 360                        item->util = NULL;
 361        }
 362
 363        return 0;
 364}
 365
 366static int migrate_file(struct remote *remote)
 367{
 368        struct strbuf buf = STRBUF_INIT;
 369        int i;
 370        char *path = NULL;
 371
 372        strbuf_addf(&buf, "remote.%s.url", remote->name);
 373        for (i = 0; i < remote->url_nr; i++)
 374                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 375                        return error("Could not append '%s' to '%s'",
 376                                        remote->url[i], buf.buf);
 377        strbuf_reset(&buf);
 378        strbuf_addf(&buf, "remote.%s.push", remote->name);
 379        for (i = 0; i < remote->push_refspec_nr; i++)
 380                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 381                        return error("Could not append '%s' to '%s'",
 382                                        remote->push_refspec[i], buf.buf);
 383        strbuf_reset(&buf);
 384        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 385        for (i = 0; i < remote->fetch_refspec_nr; i++)
 386                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 387                        return error("Could not append '%s' to '%s'",
 388                                        remote->fetch_refspec[i], buf.buf);
 389        if (remote->origin == REMOTE_REMOTES)
 390                path = git_path("remotes/%s", remote->name);
 391        else if (remote->origin == REMOTE_BRANCHES)
 392                path = git_path("branches/%s", remote->name);
 393        if (path && unlink(path))
 394                warning("failed to remove '%s'", path);
 395        return 0;
 396}
 397
 398static int mv(int argc, const char **argv)
 399{
 400        struct option options[] = {
 401                OPT_END()
 402        };
 403        struct remote *oldremote, *newremote;
 404        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 405        struct string_list remote_branches = { NULL, 0, 0, 0 };
 406        struct rename_info rename;
 407        int i;
 408
 409        if (argc != 3)
 410                usage_with_options(builtin_remote_usage, options);
 411
 412        rename.old = argv[1];
 413        rename.new = argv[2];
 414        rename.remote_branches = &remote_branches;
 415
 416        oldremote = remote_get(rename.old);
 417        if (!oldremote)
 418                die("No such remote: %s", rename.old);
 419
 420        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 421                return migrate_file(oldremote);
 422
 423        newremote = remote_get(rename.new);
 424        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 425                die("remote %s already exists.", rename.new);
 426
 427        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 428        if (!valid_fetch_refspec(buf.buf))
 429                die("'%s' is not a valid remote name", rename.new);
 430
 431        strbuf_reset(&buf);
 432        strbuf_addf(&buf, "remote.%s", rename.old);
 433        strbuf_addf(&buf2, "remote.%s", rename.new);
 434        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 435                return error("Could not rename config section '%s' to '%s'",
 436                                buf.buf, buf2.buf);
 437
 438        strbuf_reset(&buf);
 439        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 440        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 441                return error("Could not remove config section '%s'", buf.buf);
 442        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 443                char *ptr;
 444
 445                strbuf_reset(&buf2);
 446                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 447                ptr = strstr(buf2.buf, rename.old);
 448                if (ptr)
 449                        strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 450                                        rename.new, strlen(rename.new));
 451                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 452                        return error("Could not append '%s'", buf.buf);
 453        }
 454
 455        read_branches();
 456        for (i = 0; i < branch_list.nr; i++) {
 457                struct string_list_item *item = branch_list.items + i;
 458                struct branch_info *info = item->util;
 459                if (info->remote && !strcmp(info->remote, rename.old)) {
 460                        strbuf_reset(&buf);
 461                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 462                        if (git_config_set(buf.buf, rename.new)) {
 463                                return error("Could not set '%s'", buf.buf);
 464                        }
 465                }
 466        }
 467
 468        /*
 469         * First remove symrefs, then rename the rest, finally create
 470         * the new symrefs.
 471         */
 472        for_each_ref(read_remote_branches, &rename);
 473        for (i = 0; i < remote_branches.nr; i++) {
 474                struct string_list_item *item = remote_branches.items + i;
 475                int flag = 0;
 476                unsigned char sha1[20];
 477                const char *symref;
 478
 479                symref = resolve_ref(item->string, sha1, 1, &flag);
 480                if (!(flag & REF_ISSYMREF))
 481                        continue;
 482                if (delete_ref(item->string, NULL, REF_NODEREF))
 483                        die("deleting '%s' failed", item->string);
 484        }
 485        for (i = 0; i < remote_branches.nr; i++) {
 486                struct string_list_item *item = remote_branches.items + i;
 487
 488                if (item->util)
 489                        continue;
 490                strbuf_reset(&buf);
 491                strbuf_addstr(&buf, item->string);
 492                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 493                                rename.new, strlen(rename.new));
 494                strbuf_reset(&buf2);
 495                strbuf_addf(&buf2, "remote: renamed %s to %s",
 496                                item->string, buf.buf);
 497                if (rename_ref(item->string, buf.buf, buf2.buf))
 498                        die("renaming '%s' failed", item->string);
 499        }
 500        for (i = 0; i < remote_branches.nr; i++) {
 501                struct string_list_item *item = remote_branches.items + i;
 502
 503                if (!item->util)
 504                        continue;
 505                strbuf_reset(&buf);
 506                strbuf_addstr(&buf, item->string);
 507                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 508                                rename.new, strlen(rename.new));
 509                strbuf_reset(&buf2);
 510                strbuf_addstr(&buf2, item->util);
 511                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 512                                rename.new, strlen(rename.new));
 513                strbuf_reset(&buf3);
 514                strbuf_addf(&buf3, "remote: renamed %s to %s",
 515                                item->string, buf.buf);
 516                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 517                        die("creating '%s' failed", buf.buf);
 518        }
 519        return 0;
 520}
 521
 522static int remove_branches(struct string_list *branches)
 523{
 524        int i, result = 0;
 525        for (i = 0; i < branches->nr; i++) {
 526                struct string_list_item *item = branches->items + i;
 527                const char *refname = item->string;
 528                unsigned char *sha1 = item->util;
 529
 530                if (delete_ref(refname, sha1, 0))
 531                        result |= error("Could not remove branch %s", refname);
 532        }
 533        return result;
 534}
 535
 536static int rm(int argc, const char **argv)
 537{
 538        struct option options[] = {
 539                OPT_END()
 540        };
 541        struct remote *remote;
 542        struct strbuf buf = STRBUF_INIT;
 543        struct known_remotes known_remotes = { NULL, NULL };
 544        struct string_list branches = { NULL, 0, 0, 1 };
 545        struct branches_for_remote cb_data = { NULL, &branches, &known_remotes };
 546        int i;
 547
 548        if (argc != 2)
 549                usage_with_options(builtin_remote_usage, options);
 550
 551        remote = remote_get(argv[1]);
 552        if (!remote)
 553                die("No such remote: %s", argv[1]);
 554
 555        known_remotes.to_delete = remote;
 556        for_each_remote(add_known_remote, &known_remotes);
 557
 558        strbuf_addf(&buf, "remote.%s", remote->name);
 559        if (git_config_rename_section(buf.buf, NULL) < 1)
 560                return error("Could not remove config section '%s'", buf.buf);
 561
 562        read_branches();
 563        for (i = 0; i < branch_list.nr; i++) {
 564                struct string_list_item *item = branch_list.items + i;
 565                struct branch_info *info = item->util;
 566                if (info->remote && !strcmp(info->remote, remote->name)) {
 567                        const char *keys[] = { "remote", "merge", NULL }, **k;
 568                        for (k = keys; *k; k++) {
 569                                strbuf_reset(&buf);
 570                                strbuf_addf(&buf, "branch.%s.%s",
 571                                                item->string, *k);
 572                                if (git_config_set(buf.buf, NULL)) {
 573                                        strbuf_release(&buf);
 574                                        return -1;
 575                                }
 576                        }
 577                }
 578        }
 579
 580        /*
 581         * We cannot just pass a function to for_each_ref() which deletes
 582         * the branches one by one, since for_each_ref() relies on cached
 583         * refs, which are invalidated when deleting a branch.
 584         */
 585        cb_data.remote = remote;
 586        i = for_each_ref(add_branch_for_removal, &cb_data);
 587        strbuf_release(&buf);
 588
 589        if (!i)
 590                i = remove_branches(&branches);
 591        string_list_clear(&branches, 1);
 592
 593        return i;
 594}
 595
 596static void show_list(const char *title, struct string_list *list,
 597                      const char *extra_arg)
 598{
 599        int i;
 600
 601        if (!list->nr)
 602                return;
 603
 604        printf(title, list->nr > 1 ? "es" : "", extra_arg);
 605        printf("\n");
 606        for (i = 0; i < list->nr; i++)
 607                printf("    %s\n", list->items[i].string);
 608}
 609
 610static int get_remote_ref_states(const char *name,
 611                                 struct ref_states *states,
 612                                 int query)
 613{
 614        struct transport *transport;
 615        const struct ref *ref;
 616
 617        states->remote = remote_get(name);
 618        if (!states->remote)
 619                return error("No such remote: %s", name);
 620
 621        read_branches();
 622
 623        if (query) {
 624                transport = transport_get(NULL, states->remote->url_nr > 0 ?
 625                        states->remote->url[0] : NULL);
 626                ref = transport_get_remote_refs(transport);
 627                transport_disconnect(transport);
 628
 629                get_ref_states(ref, states);
 630        }
 631
 632        return 0;
 633}
 634
 635static int append_ref_to_tracked_list(const char *refname,
 636        const unsigned char *sha1, int flags, void *cb_data)
 637{
 638        struct ref_states *states = cb_data;
 639        struct refspec refspec;
 640
 641        memset(&refspec, 0, sizeof(refspec));
 642        refspec.dst = (char *)refname;
 643        if (!remote_find_tracking(states->remote, &refspec))
 644                string_list_append(abbrev_branch(refspec.src), &states->tracked);
 645
 646        return 0;
 647}
 648
 649static int show(int argc, const char **argv)
 650{
 651        int no_query = 0, result = 0;
 652        struct option options[] = {
 653                OPT_GROUP("show specific options"),
 654                OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
 655                OPT_END()
 656        };
 657        struct ref_states states;
 658
 659        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 660
 661        if (argc < 1)
 662                return show_all();
 663
 664        memset(&states, 0, sizeof(states));
 665        for (; argc; argc--, argv++) {
 666                int i;
 667
 668                get_remote_ref_states(*argv, &states, !no_query);
 669
 670                printf("* remote %s\n  URL: %s\n", *argv,
 671                        states.remote->url_nr > 0 ?
 672                                states.remote->url[0] : "(no URL)");
 673
 674                for (i = 0; i < branch_list.nr; i++) {
 675                        struct string_list_item *branch = branch_list.items + i;
 676                        struct branch_info *info = branch->util;
 677                        int j;
 678
 679                        if (!info->merge.nr || strcmp(*argv, info->remote))
 680                                continue;
 681                        printf("  Remote branch%s merged with 'git pull' "
 682                                "while on branch %s\n   ",
 683                                info->merge.nr > 1 ? "es" : "",
 684                                branch->string);
 685                        for (j = 0; j < info->merge.nr; j++)
 686                                printf(" %s", info->merge.items[j].string);
 687                        printf("\n");
 688                }
 689
 690                if (!no_query) {
 691                        show_list("  New remote branch%s (next fetch "
 692                                "will store in remotes/%s)",
 693                                &states.new, states.remote->name);
 694                        show_list("  Stale tracking branch%s (use 'git remote "
 695                                "prune')", &states.stale, "");
 696                }
 697
 698                if (no_query)
 699                        for_each_ref(append_ref_to_tracked_list, &states);
 700                show_list("  Tracked remote branch%s", &states.tracked, "");
 701
 702                if (states.remote->push_refspec_nr) {
 703                        printf("  Local branch%s pushed with 'git push'\n",
 704                                states.remote->push_refspec_nr > 1 ?
 705                                        "es" : "");
 706                        for (i = 0; i < states.remote->push_refspec_nr; i++) {
 707                                struct refspec *spec = states.remote->push + i;
 708                                printf("    %s%s%s%s\n",
 709                                       spec->force ? "+" : "",
 710                                       abbrev_branch(spec->src),
 711                                       spec->dst ? ":" : "",
 712                                       spec->dst ? abbrev_branch(spec->dst) : "");
 713                        }
 714                }
 715
 716                /* NEEDSWORK: free remote */
 717                string_list_clear(&states.new, 0);
 718                string_list_clear(&states.stale, 0);
 719                string_list_clear(&states.tracked, 0);
 720        }
 721
 722        return result;
 723}
 724
 725static int prune(int argc, const char **argv)
 726{
 727        int dry_run = 0, result = 0;
 728        struct option options[] = {
 729                OPT_GROUP("prune specific options"),
 730                OPT__DRY_RUN(&dry_run),
 731                OPT_END()
 732        };
 733        struct ref_states states;
 734
 735        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 736
 737        if (argc < 1)
 738                usage_with_options(builtin_remote_usage, options);
 739
 740        memset(&states, 0, sizeof(states));
 741        for (; argc; argc--, argv++) {
 742                int i;
 743
 744                get_remote_ref_states(*argv, &states, 1);
 745
 746                if (states.stale.nr) {
 747                        printf("Pruning %s\n", *argv);
 748                        printf("URL: %s\n",
 749                               states.remote->url_nr
 750                               ? states.remote->url[0]
 751                               : "(no URL)");
 752                }
 753
 754                for (i = 0; i < states.stale.nr; i++) {
 755                        const char *refname = states.stale.items[i].util;
 756
 757                        if (!dry_run)
 758                                result |= delete_ref(refname, NULL, 0);
 759
 760                        printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
 761                               abbrev_ref(refname, "refs/remotes/"));
 762                }
 763
 764                /* NEEDSWORK: free remote */
 765                string_list_clear(&states.new, 0);
 766                string_list_clear(&states.stale, 0);
 767                string_list_clear(&states.tracked, 0);
 768        }
 769
 770        return result;
 771}
 772
 773static int get_one_remote_for_update(struct remote *remote, void *priv)
 774{
 775        struct string_list *list = priv;
 776        if (!remote->skip_default_update)
 777                string_list_append(remote->name, list);
 778        return 0;
 779}
 780
 781struct remote_group {
 782        const char *name;
 783        struct string_list *list;
 784} remote_group;
 785
 786static int get_remote_group(const char *key, const char *value, void *cb)
 787{
 788        if (!prefixcmp(key, "remotes.") &&
 789                        !strcmp(key + 8, remote_group.name)) {
 790                /* split list by white space */
 791                int space = strcspn(value, " \t\n");
 792                while (*value) {
 793                        if (space > 1)
 794                                string_list_append(xstrndup(value, space),
 795                                                remote_group.list);
 796                        value += space + (value[space] != '\0');
 797                        space = strcspn(value, " \t\n");
 798                }
 799        }
 800
 801        return 0;
 802}
 803
 804static int update(int argc, const char **argv)
 805{
 806        int i, result = 0;
 807        struct string_list list = { NULL, 0, 0, 0 };
 808        static const char *default_argv[] = { NULL, "default", NULL };
 809
 810        if (argc < 2) {
 811                argc = 2;
 812                argv = default_argv;
 813        }
 814
 815        remote_group.list = &list;
 816        for (i = 1; i < argc; i++) {
 817                remote_group.name = argv[i];
 818                result = git_config(get_remote_group, NULL);
 819        }
 820
 821        if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
 822                result = for_each_remote(get_one_remote_for_update, &list);
 823
 824        for (i = 0; i < list.nr; i++)
 825                result |= fetch_remote(list.items[i].string);
 826
 827        /* all names were strdup()ed or strndup()ed */
 828        list.strdup_strings = 1;
 829        string_list_clear(&list, 0);
 830
 831        return result;
 832}
 833
 834static int get_one_entry(struct remote *remote, void *priv)
 835{
 836        struct string_list *list = priv;
 837
 838        if (remote->url_nr > 0) {
 839                int i;
 840
 841                for (i = 0; i < remote->url_nr; i++)
 842                        string_list_append(remote->name, list)->util = (void *)remote->url[i];
 843        } else
 844                string_list_append(remote->name, list)->util = NULL;
 845
 846        return 0;
 847}
 848
 849static int show_all(void)
 850{
 851        struct string_list list = { NULL, 0, 0 };
 852        int result = for_each_remote(get_one_entry, &list);
 853
 854        if (!result) {
 855                int i;
 856
 857                sort_string_list(&list);
 858                for (i = 0; i < list.nr; i++) {
 859                        struct string_list_item *item = list.items + i;
 860                        if (verbose)
 861                                printf("%s\t%s\n", item->string,
 862                                        item->util ? (const char *)item->util : "");
 863                        else {
 864                                if (i && !strcmp((item - 1)->string, item->string))
 865                                        continue;
 866                                printf("%s\n", item->string);
 867                        }
 868                }
 869        }
 870        return result;
 871}
 872
 873int cmd_remote(int argc, const char **argv, const char *prefix)
 874{
 875        struct option options[] = {
 876                OPT__VERBOSE(&verbose),
 877                OPT_END()
 878        };
 879        int result;
 880
 881        argc = parse_options(argc, argv, options, builtin_remote_usage,
 882                PARSE_OPT_STOP_AT_NON_OPTION);
 883
 884        if (argc < 1)
 885                result = show_all();
 886        else if (!strcmp(argv[0], "add"))
 887                result = add(argc, argv);
 888        else if (!strcmp(argv[0], "rename"))
 889                result = mv(argc, argv);
 890        else if (!strcmp(argv[0], "rm"))
 891                result = rm(argc, argv);
 892        else if (!strcmp(argv[0], "show"))
 893                result = show(argc, argv);
 894        else if (!strcmp(argv[0], "prune"))
 895                result = prune(argc, argv);
 896        else if (!strcmp(argv[0], "update"))
 897                result = update(argc, argv);
 898        else {
 899                error("Unknown subcommand: %s", argv[0]);
 900                usage_with_options(builtin_remote_usage, options);
 901        }
 902
 903        return result ? 1 : 0;
 904}