Andrew's git / gitweb.git / builtin/remote.c
?
builtin / remote.con commit commit: factor out clear_commit_marks_for_object_array (86a0a40)
   1#include "builtin.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=<fetch|push>] <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 [-v | --verbose] show [-n] <name>",
  17        "git remote prune [-n | --dry-run] <name>",
  18        "git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]",
  19        "git remote set-branches <name> [--add] <branch>...",
  20        "git remote set-url <name> <newurl> [<oldurl>]",
  21        "git remote set-url --add <name> <newurl>",
  22        "git remote set-url --delete <name> <url>",
  23        NULL
  24};
  25
  26static const char * const builtin_remote_add_usage[] = {
  27        "git remote add [<options>] <name> <url>",
  28        NULL
  29};
  30
  31static const char * const builtin_remote_rename_usage[] = {
  32        "git remote rename <old> <new>",
  33        NULL
  34};
  35
  36static const char * const builtin_remote_rm_usage[] = {
  37        "git remote rm <name>",
  38        NULL
  39};
  40
  41static const char * const builtin_remote_sethead_usage[] = {
  42        "git remote set-head <name> (-a | -d | <branch>])",
  43        NULL
  44};
  45
  46static const char * const builtin_remote_setbranches_usage[] = {
  47        "git remote set-branches <name> <branch>...",
  48        "git remote set-branches --add <name> <branch>...",
  49        NULL
  50};
  51
  52static const char * const builtin_remote_show_usage[] = {
  53        "git remote show [<options>] <name>",
  54        NULL
  55};
  56
  57static const char * const builtin_remote_prune_usage[] = {
  58        "git remote prune [<options>] <name>",
  59        NULL
  60};
  61
  62static const char * const builtin_remote_update_usage[] = {
  63        "git remote update [<options>] [<group> | <remote>]...",
  64        NULL
  65};
  66
  67static const char * const builtin_remote_seturl_usage[] = {
  68        "git remote set-url [--push] <name> <newurl> [<oldurl>]",
  69        "git remote set-url --add <name> <newurl>",
  70        "git remote set-url --delete <name> <url>",
  71        NULL
  72};
  73
  74#define GET_REF_STATES (1<<0)
  75#define GET_HEAD_NAMES (1<<1)
  76#define GET_PUSH_REF_STATES (1<<2)
  77
  78static int verbose;
  79
  80static int show_all(void);
  81static int prune_remote(const char *remote, int dry_run);
  82
  83static inline int postfixcmp(const char *string, const char *postfix)
  84{
  85        int len1 = strlen(string), len2 = strlen(postfix);
  86        if (len1 < len2)
  87                return 1;
  88        return strcmp(string + len1 - len2, postfix);
  89}
  90
  91static int opt_parse_track(const struct option *opt, const char *arg, int not)
  92{
  93        struct string_list *list = opt->value;
  94        if (not)
  95                string_list_clear(list, 0);
  96        else
  97                string_list_append(list, arg);
  98        return 0;
  99}
 100
 101static int fetch_remote(const char *name)
 102{
 103        const char *argv[] = { "fetch", name, NULL, NULL };
 104        if (verbose) {
 105                argv[1] = "-v";
 106                argv[2] = name;
 107        }
 108        printf("Updating %s\n", name);
 109        if (run_command_v_opt(argv, RUN_GIT_CMD))
 110                return error("Could not fetch %s", name);
 111        return 0;
 112}
 113
 114enum {
 115        TAGS_UNSET = 0,
 116        TAGS_DEFAULT = 1,
 117        TAGS_SET = 2
 118};
 119
 120#define MIRROR_NONE 0
 121#define MIRROR_FETCH 1
 122#define MIRROR_PUSH 2
 123#define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)
 124
 125static int add_branch(const char *key, const char *branchname,
 126                const char *remotename, int mirror, struct strbuf *tmp)
 127{
 128        strbuf_reset(tmp);
 129        strbuf_addch(tmp, '+');
 130        if (mirror)
 131                strbuf_addf(tmp, "refs/%s:refs/%s",
 132                                branchname, branchname);
 133        else
 134                strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
 135                                branchname, remotename, branchname);
 136        return git_config_set_multivar(key, tmp->buf, "^$", 0);
 137}
 138
 139static const char mirror_advice[] =
 140"--mirror is dangerous and deprecated; please\n"
 141"\t use --mirror=fetch or --mirror=push instead";
 142
 143static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
 144{
 145        unsigned *mirror = opt->value;
 146        if (not)
 147                *mirror = MIRROR_NONE;
 148        else if (!arg) {
 149                warning("%s", mirror_advice);
 150                *mirror = MIRROR_BOTH;
 151        }
 152        else if (!strcmp(arg, "fetch"))
 153                *mirror = MIRROR_FETCH;
 154        else if (!strcmp(arg, "push"))
 155                *mirror = MIRROR_PUSH;
 156        else
 157                return error("unknown mirror argument: %s", arg);
 158        return 0;
 159}
 160
 161static int add(int argc, const char **argv)
 162{
 163        int fetch = 0, fetch_tags = TAGS_DEFAULT;
 164        unsigned mirror = MIRROR_NONE;
 165        struct string_list track = STRING_LIST_INIT_NODUP;
 166        const char *master = NULL;
 167        struct remote *remote;
 168        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
 169        const char *name, *url;
 170        int i;
 171
 172        struct option options[] = {
 173                OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
 174                OPT_SET_INT(0, "tags", &fetch_tags,
 175                            "import all tags and associated objects when fetching",
 176                            TAGS_SET),
 177                OPT_SET_INT(0, NULL, &fetch_tags,
 178                            "or do not fetch any tag at all (--no-tags)", TAGS_UNSET),
 179                OPT_CALLBACK('t', "track", &track, "branch",
 180                        "branch(es) to track", opt_parse_track),
 181                OPT_STRING('m', "master", &master, "branch", "master branch"),
 182                { OPTION_CALLBACK, 0, "mirror", &mirror, "push|fetch",
 183                        "set up remote as a mirror to push to or fetch from",
 184                        PARSE_OPT_OPTARG, parse_mirror_opt },
 185                OPT_END()
 186        };
 187
 188        argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
 189                             0);
 190
 191        if (argc < 2)
 192                usage_with_options(builtin_remote_add_usage, options);
 193
 194        if (mirror && master)
 195                die("specifying a master branch makes no sense with --mirror");
 196        if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
 197                die("specifying branches to track makes sense only with fetch mirrors");
 198
 199        name = argv[0];
 200        url = argv[1];
 201
 202        remote = remote_get(name);
 203        if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
 204                        remote->fetch_refspec_nr))
 205                die("remote %s already exists.", name);
 206
 207        strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
 208        if (!valid_fetch_refspec(buf2.buf))
 209                die("'%s' is not a valid remote name", name);
 210
 211        strbuf_addf(&buf, "remote.%s.url", name);
 212        if (git_config_set(buf.buf, url))
 213                return 1;
 214
 215        if (!mirror || mirror & MIRROR_FETCH) {
 216                strbuf_reset(&buf);
 217                strbuf_addf(&buf, "remote.%s.fetch", name);
 218                if (track.nr == 0)
 219                        string_list_append(&track, "*");
 220                for (i = 0; i < track.nr; i++) {
 221                        if (add_branch(buf.buf, track.items[i].string,
 222                                       name, mirror, &buf2))
 223                                return 1;
 224                }
 225        }
 226
 227        if (mirror & MIRROR_PUSH) {
 228                strbuf_reset(&buf);
 229                strbuf_addf(&buf, "remote.%s.mirror", name);
 230                if (git_config_set(buf.buf, "true"))
 231                        return 1;
 232        }
 233
 234        if (fetch_tags != TAGS_DEFAULT) {
 235                strbuf_reset(&buf);
 236                strbuf_addf(&buf, "remote.%s.tagopt", name);
 237                if (git_config_set(buf.buf,
 238                        fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
 239                        return 1;
 240        }
 241
 242        if (fetch && fetch_remote(name))
 243                return 1;
 244
 245        if (master) {
 246                strbuf_reset(&buf);
 247                strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 248
 249                strbuf_reset(&buf2);
 250                strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 251
 252                if (create_symref(buf.buf, buf2.buf, "remote add"))
 253                        return error("Could not setup master '%s'", master);
 254        }
 255
 256        strbuf_release(&buf);
 257        strbuf_release(&buf2);
 258        string_list_clear(&track, 0);
 259
 260        return 0;
 261}
 262
 263struct branch_info {
 264        char *remote_name;
 265        struct string_list merge;
 266        int rebase;
 267};
 268
 269static struct string_list branch_list;
 270
 271static const char *abbrev_ref(const char *name, const char *prefix)
 272{
 273        const char *abbrev = skip_prefix(name, prefix);
 274        if (abbrev)
 275                return abbrev;
 276        return name;
 277}
 278#define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 279
 280static int config_read_branches(const char *key, const char *value, void *cb)
 281{
 282        if (!prefixcmp(key, "branch.")) {
 283                const char *orig_key = key;
 284                char *name;
 285                struct string_list_item *item;
 286                struct branch_info *info;
 287                enum { REMOTE, MERGE, REBASE } type;
 288
 289                key += 7;
 290                if (!postfixcmp(key, ".remote")) {
 291                        name = xstrndup(key, strlen(key) - 7);
 292                        type = REMOTE;
 293                } else if (!postfixcmp(key, ".merge")) {
 294                        name = xstrndup(key, strlen(key) - 6);
 295                        type = MERGE;
 296                } else if (!postfixcmp(key, ".rebase")) {
 297                        name = xstrndup(key, strlen(key) - 7);
 298                        type = REBASE;
 299                } else
 300                        return 0;
 301
 302                item = string_list_insert(&branch_list, name);
 303
 304                if (!item->util)
 305                        item->util = xcalloc(sizeof(struct branch_info), 1);
 306                info = item->util;
 307                if (type == REMOTE) {
 308                        if (info->remote_name)
 309                                warning("more than one %s", orig_key);
 310                        info->remote_name = xstrdup(value);
 311                } else if (type == MERGE) {
 312                        char *space = strchr(value, ' ');
 313                        value = abbrev_branch(value);
 314                        while (space) {
 315                                char *merge;
 316                                merge = xstrndup(value, space - value);
 317                                string_list_append(&info->merge, merge);
 318                                value = abbrev_branch(space + 1);
 319                                space = strchr(value, ' ');
 320                        }
 321                        string_list_append(&info->merge, xstrdup(value));
 322                } else
 323                        info->rebase = git_config_bool(orig_key, value);
 324        }
 325        return 0;
 326}
 327
 328static void read_branches(void)
 329{
 330        if (branch_list.nr)
 331                return;
 332        git_config(config_read_branches, NULL);
 333}
 334
 335struct ref_states {
 336        struct remote *remote;
 337        struct string_list new, stale, tracked, heads, push;
 338        int queried;
 339};
 340
 341static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 342{
 343        struct ref *fetch_map = NULL, **tail = &fetch_map;
 344        struct ref *ref, *stale_refs;
 345        int i;
 346
 347        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 348                if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 349                        die("Could not get fetch map for refspec %s",
 350                                states->remote->fetch_refspec[i]);
 351
 352        states->new.strdup_strings = 1;
 353        states->tracked.strdup_strings = 1;
 354        states->stale.strdup_strings = 1;
 355        for (ref = fetch_map; ref; ref = ref->next) {
 356                unsigned char sha1[20];
 357                if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 358                        string_list_append(&states->new, abbrev_branch(ref->name));
 359                else
 360                        string_list_append(&states->tracked, abbrev_branch(ref->name));
 361        }
 362        stale_refs = get_stale_heads(states->remote, fetch_map);
 363        for (ref = stale_refs; ref; ref = ref->next) {
 364                struct string_list_item *item =
 365                        string_list_append(&states->stale, abbrev_branch(ref->name));
 366                item->util = xstrdup(ref->name);
 367        }
 368        free_refs(stale_refs);
 369        free_refs(fetch_map);
 370
 371        sort_string_list(&states->new);
 372        sort_string_list(&states->tracked);
 373        sort_string_list(&states->stale);
 374
 375        return 0;
 376}
 377
 378struct push_info {
 379        char *dest;
 380        int forced;
 381        enum {
 382                PUSH_STATUS_CREATE = 0,
 383                PUSH_STATUS_DELETE,
 384                PUSH_STATUS_UPTODATE,
 385                PUSH_STATUS_FASTFORWARD,
 386                PUSH_STATUS_OUTOFDATE,
 387                PUSH_STATUS_NOTQUERIED
 388        } status;
 389};
 390
 391static int get_push_ref_states(const struct ref *remote_refs,
 392        struct ref_states *states)
 393{
 394        struct remote *remote = states->remote;
 395        struct ref *ref, *local_refs, *push_map;
 396        if (remote->mirror)
 397                return 0;
 398
 399        local_refs = get_local_heads();
 400        push_map = copy_ref_list(remote_refs);
 401
 402        match_refs(local_refs, &push_map, remote->push_refspec_nr,
 403                   remote->push_refspec, MATCH_REFS_NONE);
 404
 405        states->push.strdup_strings = 1;
 406        for (ref = push_map; ref; ref = ref->next) {
 407                struct string_list_item *item;
 408                struct push_info *info;
 409
 410                if (!ref->peer_ref)
 411                        continue;
 412                hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 413
 414                item = string_list_append(&states->push,
 415                                          abbrev_branch(ref->peer_ref->name));
 416                item->util = xcalloc(sizeof(struct push_info), 1);
 417                info = item->util;
 418                info->forced = ref->force;
 419                info->dest = xstrdup(abbrev_branch(ref->name));
 420
 421                if (is_null_sha1(ref->new_sha1)) {
 422                        info->status = PUSH_STATUS_DELETE;
 423                } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 424                        info->status = PUSH_STATUS_UPTODATE;
 425                else if (is_null_sha1(ref->old_sha1))
 426                        info->status = PUSH_STATUS_CREATE;
 427                else if (has_sha1_file(ref->old_sha1) &&
 428                         ref_newer(ref->new_sha1, ref->old_sha1))
 429                        info->status = PUSH_STATUS_FASTFORWARD;
 430                else
 431                        info->status = PUSH_STATUS_OUTOFDATE;
 432        }
 433        free_refs(local_refs);
 434        free_refs(push_map);
 435        return 0;
 436}
 437
 438static int get_push_ref_states_noquery(struct ref_states *states)
 439{
 440        int i;
 441        struct remote *remote = states->remote;
 442        struct string_list_item *item;
 443        struct push_info *info;
 444
 445        if (remote->mirror)
 446                return 0;
 447
 448        states->push.strdup_strings = 1;
 449        if (!remote->push_refspec_nr) {
 450                item = string_list_append(&states->push, "(matching)");
 451                info = item->util = xcalloc(sizeof(struct push_info), 1);
 452                info->status = PUSH_STATUS_NOTQUERIED;
 453                info->dest = xstrdup(item->string);
 454        }
 455        for (i = 0; i < remote->push_refspec_nr; i++) {
 456                struct refspec *spec = remote->push + i;
 457                if (spec->matching)
 458                        item = string_list_append(&states->push, "(matching)");
 459                else if (strlen(spec->src))
 460                        item = string_list_append(&states->push, spec->src);
 461                else
 462                        item = string_list_append(&states->push, "(delete)");
 463
 464                info = item->util = xcalloc(sizeof(struct push_info), 1);
 465                info->forced = spec->force;
 466                info->status = PUSH_STATUS_NOTQUERIED;
 467                info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 468        }
 469        return 0;
 470}
 471
 472static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 473{
 474        struct ref *ref, *matches;
 475        struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 476        struct refspec refspec;
 477
 478        refspec.force = 0;
 479        refspec.pattern = 1;
 480        refspec.src = refspec.dst = "refs/heads/*";
 481        states->heads.strdup_strings = 1;
 482        get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 483        matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 484                                    fetch_map, 1);
 485        for (ref = matches; ref; ref = ref->next)
 486                string_list_append(&states->heads, abbrev_branch(ref->name));
 487
 488        free_refs(fetch_map);
 489        free_refs(matches);
 490
 491        return 0;
 492}
 493
 494struct known_remote {
 495        struct known_remote *next;
 496        struct remote *remote;
 497};
 498
 499struct known_remotes {
 500        struct remote *to_delete;
 501        struct known_remote *list;
 502};
 503
 504static int add_known_remote(struct remote *remote, void *cb_data)
 505{
 506        struct known_remotes *all = cb_data;
 507        struct known_remote *r;
 508
 509        if (!strcmp(all->to_delete->name, remote->name))
 510                return 0;
 511
 512        r = xmalloc(sizeof(*r));
 513        r->remote = remote;
 514        r->next = all->list;
 515        all->list = r;
 516        return 0;
 517}
 518
 519struct branches_for_remote {
 520        struct remote *remote;
 521        struct string_list *branches, *skipped;
 522        struct known_remotes *keep;
 523};
 524
 525static int add_branch_for_removal(const char *refname,
 526        const unsigned char *sha1, int flags, void *cb_data)
 527{
 528        struct branches_for_remote *branches = cb_data;
 529        struct refspec refspec;
 530        struct string_list_item *item;
 531        struct known_remote *kr;
 532
 533        memset(&refspec, 0, sizeof(refspec));
 534        refspec.dst = (char *)refname;
 535        if (remote_find_tracking(branches->remote, &refspec))
 536                return 0;
 537
 538        /* don't delete a branch if another remote also uses it */
 539        for (kr = branches->keep->list; kr; kr = kr->next) {
 540                memset(&refspec, 0, sizeof(refspec));
 541                refspec.dst = (char *)refname;
 542                if (!remote_find_tracking(kr->remote, &refspec))
 543                        return 0;
 544        }
 545
 546        /* don't delete non-remote-tracking refs */
 547        if (prefixcmp(refname, "refs/remotes")) {
 548                /* advise user how to delete local branches */
 549                if (!prefixcmp(refname, "refs/heads/"))
 550                        string_list_append(branches->skipped,
 551                                           abbrev_branch(refname));
 552                /* silently skip over other non-remote refs */
 553                return 0;
 554        }
 555
 556        /* make sure that symrefs are deleted */
 557        if (flags & REF_ISSYMREF)
 558                return unlink(git_path("%s", refname));
 559
 560        item = string_list_append(branches->branches, refname);
 561        item->util = xmalloc(20);
 562        hashcpy(item->util, sha1);
 563
 564        return 0;
 565}
 566
 567struct rename_info {
 568        const char *old;
 569        const char *new;
 570        struct string_list *remote_branches;
 571};
 572
 573static int read_remote_branches(const char *refname,
 574        const unsigned char *sha1, int flags, void *cb_data)
 575{
 576        struct rename_info *rename = cb_data;
 577        struct strbuf buf = STRBUF_INIT;
 578        struct string_list_item *item;
 579        int flag;
 580        unsigned char orig_sha1[20];
 581        const char *symref;
 582
 583        strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 584        if (!prefixcmp(refname, buf.buf)) {
 585                item = string_list_append(rename->remote_branches, xstrdup(refname));
 586                symref = resolve_ref(refname, orig_sha1, 1, &flag);
 587                if (flag & REF_ISSYMREF)
 588                        item->util = xstrdup(symref);
 589                else
 590                        item->util = NULL;
 591        }
 592
 593        return 0;
 594}
 595
 596static int migrate_file(struct remote *remote)
 597{
 598        struct strbuf buf = STRBUF_INIT;
 599        int i;
 600        char *path = NULL;
 601
 602        strbuf_addf(&buf, "remote.%s.url", remote->name);
 603        for (i = 0; i < remote->url_nr; i++)
 604                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 605                        return error("Could not append '%s' to '%s'",
 606                                        remote->url[i], buf.buf);
 607        strbuf_reset(&buf);
 608        strbuf_addf(&buf, "remote.%s.push", remote->name);
 609        for (i = 0; i < remote->push_refspec_nr; i++)
 610                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 611                        return error("Could not append '%s' to '%s'",
 612                                        remote->push_refspec[i], buf.buf);
 613        strbuf_reset(&buf);
 614        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 615        for (i = 0; i < remote->fetch_refspec_nr; i++)
 616                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 617                        return error("Could not append '%s' to '%s'",
 618                                        remote->fetch_refspec[i], buf.buf);
 619        if (remote->origin == REMOTE_REMOTES)
 620                path = git_path("remotes/%s", remote->name);
 621        else if (remote->origin == REMOTE_BRANCHES)
 622                path = git_path("branches/%s", remote->name);
 623        if (path)
 624                unlink_or_warn(path);
 625        return 0;
 626}
 627
 628static int mv(int argc, const char **argv)
 629{
 630        struct option options[] = {
 631                OPT_END()
 632        };
 633        struct remote *oldremote, *newremote;
 634        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 635        struct string_list remote_branches = STRING_LIST_INIT_NODUP;
 636        struct rename_info rename;
 637        int i;
 638
 639        if (argc != 3)
 640                usage_with_options(builtin_remote_rename_usage, options);
 641
 642        rename.old = argv[1];
 643        rename.new = argv[2];
 644        rename.remote_branches = &remote_branches;
 645
 646        oldremote = remote_get(rename.old);
 647        if (!oldremote)
 648                die("No such remote: %s", rename.old);
 649
 650        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 651                return migrate_file(oldremote);
 652
 653        newremote = remote_get(rename.new);
 654        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 655                die("remote %s already exists.", rename.new);
 656
 657        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 658        if (!valid_fetch_refspec(buf.buf))
 659                die("'%s' is not a valid remote name", rename.new);
 660
 661        strbuf_reset(&buf);
 662        strbuf_addf(&buf, "remote.%s", rename.old);
 663        strbuf_addf(&buf2, "remote.%s", rename.new);
 664        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 665                return error("Could not rename config section '%s' to '%s'",
 666                                buf.buf, buf2.buf);
 667
 668        strbuf_reset(&buf);
 669        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 670        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 671                return error("Could not remove config section '%s'", buf.buf);
 672        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 673                char *ptr;
 674
 675                strbuf_reset(&buf2);
 676                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 677                ptr = strstr(buf2.buf, rename.old);
 678                if (ptr)
 679                        strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 680                                        rename.new, strlen(rename.new));
 681                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 682                        return error("Could not append '%s'", buf.buf);
 683        }
 684
 685        read_branches();
 686        for (i = 0; i < branch_list.nr; i++) {
 687                struct string_list_item *item = branch_list.items + i;
 688                struct branch_info *info = item->util;
 689                if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 690                        strbuf_reset(&buf);
 691                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 692                        if (git_config_set(buf.buf, rename.new)) {
 693                                return error("Could not set '%s'", buf.buf);
 694                        }
 695                }
 696        }
 697
 698        /*
 699         * First remove symrefs, then rename the rest, finally create
 700         * the new symrefs.
 701         */
 702        for_each_ref(read_remote_branches, &rename);
 703        for (i = 0; i < remote_branches.nr; i++) {
 704                struct string_list_item *item = remote_branches.items + i;
 705                int flag = 0;
 706                unsigned char sha1[20];
 707
 708                resolve_ref(item->string, sha1, 1, &flag);
 709                if (!(flag & REF_ISSYMREF))
 710                        continue;
 711                if (delete_ref(item->string, NULL, REF_NODEREF))
 712                        die("deleting '%s' failed", item->string);
 713        }
 714        for (i = 0; i < remote_branches.nr; i++) {
 715                struct string_list_item *item = remote_branches.items + i;
 716
 717                if (item->util)
 718                        continue;
 719                strbuf_reset(&buf);
 720                strbuf_addstr(&buf, item->string);
 721                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 722                                rename.new, strlen(rename.new));
 723                strbuf_reset(&buf2);
 724                strbuf_addf(&buf2, "remote: renamed %s to %s",
 725                                item->string, buf.buf);
 726                if (rename_ref(item->string, buf.buf, buf2.buf))
 727                        die("renaming '%s' failed", item->string);
 728        }
 729        for (i = 0; i < remote_branches.nr; i++) {
 730                struct string_list_item *item = remote_branches.items + i;
 731
 732                if (!item->util)
 733                        continue;
 734                strbuf_reset(&buf);
 735                strbuf_addstr(&buf, item->string);
 736                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 737                                rename.new, strlen(rename.new));
 738                strbuf_reset(&buf2);
 739                strbuf_addstr(&buf2, item->util);
 740                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 741                                rename.new, strlen(rename.new));
 742                strbuf_reset(&buf3);
 743                strbuf_addf(&buf3, "remote: renamed %s to %s",
 744                                item->string, buf.buf);
 745                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 746                        die("creating '%s' failed", buf.buf);
 747        }
 748        return 0;
 749}
 750
 751static int remove_branches(struct string_list *branches)
 752{
 753        int i, result = 0;
 754        for (i = 0; i < branches->nr; i++) {
 755                struct string_list_item *item = branches->items + i;
 756                const char *refname = item->string;
 757                unsigned char *sha1 = item->util;
 758
 759                if (delete_ref(refname, sha1, 0))
 760                        result |= error("Could not remove branch %s", refname);
 761        }
 762        return result;
 763}
 764
 765static int rm(int argc, const char **argv)
 766{
 767        struct option options[] = {
 768                OPT_END()
 769        };
 770        struct remote *remote;
 771        struct strbuf buf = STRBUF_INIT;
 772        struct known_remotes known_remotes = { NULL, NULL };
 773        struct string_list branches = STRING_LIST_INIT_DUP;
 774        struct string_list skipped = STRING_LIST_INIT_DUP;
 775        struct branches_for_remote cb_data;
 776        int i, result;
 777
 778        memset(&cb_data, 0, sizeof(cb_data));
 779        cb_data.branches = &branches;
 780        cb_data.skipped = &skipped;
 781        cb_data.keep = &known_remotes;
 782
 783        if (argc != 2)
 784                usage_with_options(builtin_remote_rm_usage, options);
 785
 786        remote = remote_get(argv[1]);
 787        if (!remote)
 788                die("No such remote: %s", argv[1]);
 789
 790        known_remotes.to_delete = remote;
 791        for_each_remote(add_known_remote, &known_remotes);
 792
 793        strbuf_addf(&buf, "remote.%s", remote->name);
 794        if (git_config_rename_section(buf.buf, NULL) < 1)
 795                return error("Could not remove config section '%s'", buf.buf);
 796
 797        read_branches();
 798        for (i = 0; i < branch_list.nr; i++) {
 799                struct string_list_item *item = branch_list.items + i;
 800                struct branch_info *info = item->util;
 801                if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 802                        const char *keys[] = { "remote", "merge", NULL }, **k;
 803                        for (k = keys; *k; k++) {
 804                                strbuf_reset(&buf);
 805                                strbuf_addf(&buf, "branch.%s.%s",
 806                                                item->string, *k);
 807                                if (git_config_set(buf.buf, NULL)) {
 808                                        strbuf_release(&buf);
 809                                        return -1;
 810                                }
 811                        }
 812                }
 813        }
 814
 815        /*
 816         * We cannot just pass a function to for_each_ref() which deletes
 817         * the branches one by one, since for_each_ref() relies on cached
 818         * refs, which are invalidated when deleting a branch.
 819         */
 820        cb_data.remote = remote;
 821        result = for_each_ref(add_branch_for_removal, &cb_data);
 822        strbuf_release(&buf);
 823
 824        if (!result)
 825                result = remove_branches(&branches);
 826        string_list_clear(&branches, 1);
 827
 828        if (skipped.nr) {
 829                fprintf(stderr, skipped.nr == 1 ?
 830                        "Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
 831                        "to delete it, use:\n" :
 832                        "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
 833                        "to delete them, use:\n");
 834                for (i = 0; i < skipped.nr; i++)
 835                        fprintf(stderr, "  git branch -d %s\n",
 836                                skipped.items[i].string);
 837        }
 838        string_list_clear(&skipped, 0);
 839
 840        return result;
 841}
 842
 843static void clear_push_info(void *util, const char *string)
 844{
 845        struct push_info *info = util;
 846        free(info->dest);
 847        free(info);
 848}
 849
 850static void free_remote_ref_states(struct ref_states *states)
 851{
 852        string_list_clear(&states->new, 0);
 853        string_list_clear(&states->stale, 1);
 854        string_list_clear(&states->tracked, 0);
 855        string_list_clear(&states->heads, 0);
 856        string_list_clear_func(&states->push, clear_push_info);
 857}
 858
 859static int append_ref_to_tracked_list(const char *refname,
 860        const unsigned char *sha1, int flags, void *cb_data)
 861{
 862        struct ref_states *states = cb_data;
 863        struct refspec refspec;
 864
 865        if (flags & REF_ISSYMREF)
 866                return 0;
 867
 868        memset(&refspec, 0, sizeof(refspec));
 869        refspec.dst = (char *)refname;
 870        if (!remote_find_tracking(states->remote, &refspec))
 871                string_list_append(&states->tracked, abbrev_branch(refspec.src));
 872
 873        return 0;
 874}
 875
 876static int get_remote_ref_states(const char *name,
 877                                 struct ref_states *states,
 878                                 int query)
 879{
 880        struct transport *transport;
 881        const struct ref *remote_refs;
 882
 883        states->remote = remote_get(name);
 884        if (!states->remote)
 885                return error("No such remote: %s", name);
 886
 887        read_branches();
 888
 889        if (query) {
 890                transport = transport_get(states->remote, states->remote->url_nr > 0 ?
 891                        states->remote->url[0] : NULL);
 892                remote_refs = transport_get_remote_refs(transport);
 893                transport_disconnect(transport);
 894
 895                states->queried = 1;
 896                if (query & GET_REF_STATES)
 897                        get_ref_states(remote_refs, states);
 898                if (query & GET_HEAD_NAMES)
 899                        get_head_names(remote_refs, states);
 900                if (query & GET_PUSH_REF_STATES)
 901                        get_push_ref_states(remote_refs, states);
 902        } else {
 903                for_each_ref(append_ref_to_tracked_list, states);
 904                sort_string_list(&states->tracked);
 905                get_push_ref_states_noquery(states);
 906        }
 907
 908        return 0;
 909}
 910
 911struct show_info {
 912        struct string_list *list;
 913        struct ref_states *states;
 914        int width, width2;
 915        int any_rebase;
 916};
 917
 918static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 919{
 920        struct show_info *info = cb_data;
 921        int n = strlen(item->string);
 922        if (n > info->width)
 923                info->width = n;
 924        string_list_insert(info->list, item->string);
 925        return 0;
 926}
 927
 928static int show_remote_info_item(struct string_list_item *item, void *cb_data)
 929{
 930        struct show_info *info = cb_data;
 931        struct ref_states *states = info->states;
 932        const char *name = item->string;
 933
 934        if (states->queried) {
 935                const char *fmt = "%s";
 936                const char *arg = "";
 937                if (string_list_has_string(&states->new, name)) {
 938                        fmt = " new (next fetch will store in remotes/%s)";
 939                        arg = states->remote->name;
 940                } else if (string_list_has_string(&states->tracked, name))
 941                        arg = " tracked";
 942                else if (string_list_has_string(&states->stale, name))
 943                        arg = " stale (use 'git remote prune' to remove)";
 944                else
 945                        arg = " ???";
 946                printf("    %-*s", info->width, name);
 947                printf(fmt, arg);
 948                printf("\n");
 949        } else
 950                printf("    %s\n", name);
 951
 952        return 0;
 953}
 954
 955static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 956{
 957        struct show_info *show_info = cb_data;
 958        struct ref_states *states = show_info->states;
 959        struct branch_info *branch_info = branch_item->util;
 960        struct string_list_item *item;
 961        int n;
 962
 963        if (!branch_info->merge.nr || !branch_info->remote_name ||
 964            strcmp(states->remote->name, branch_info->remote_name))
 965                return 0;
 966        if ((n = strlen(branch_item->string)) > show_info->width)
 967                show_info->width = n;
 968        if (branch_info->rebase)
 969                show_info->any_rebase = 1;
 970
 971        item = string_list_insert(show_info->list, branch_item->string);
 972        item->util = branch_info;
 973
 974        return 0;
 975}
 976
 977static int show_local_info_item(struct string_list_item *item, void *cb_data)
 978{
 979        struct show_info *show_info = cb_data;
 980        struct branch_info *branch_info = item->util;
 981        struct string_list *merge = &branch_info->merge;
 982        const char *also;
 983        int i;
 984
 985        if (branch_info->rebase && branch_info->merge.nr > 1) {
 986                error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
 987                        item->string);
 988                return 0;
 989        }
 990
 991        printf("    %-*s ", show_info->width, item->string);
 992        if (branch_info->rebase) {
 993                printf("rebases onto remote %s\n", merge->items[0].string);
 994                return 0;
 995        } else if (show_info->any_rebase) {
 996                printf(" merges with remote %s\n", merge->items[0].string);
 997                also = "    and with remote";
 998        } else {
 999                printf("merges with remote %s\n", merge->items[0].string);
1000                also = "   and with remote";
1001        }
1002        for (i = 1; i < merge->nr; i++)
1003                printf("    %-*s %s %s\n", show_info->width, "", also,
1004                       merge->items[i].string);
1005
1006        return 0;
1007}
1008
1009static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
1010{
1011        struct show_info *show_info = cb_data;
1012        struct push_info *push_info = push_item->util;
1013        struct string_list_item *item;
1014        int n;
1015        if ((n = strlen(push_item->string)) > show_info->width)
1016                show_info->width = n;
1017        if ((n = strlen(push_info->dest)) > show_info->width2)
1018                show_info->width2 = n;
1019        item = string_list_append(show_info->list, push_item->string);
1020        item->util = push_item->util;
1021        return 0;
1022}
1023
1024/*
1025 * Sorting comparison for a string list that has push_info
1026 * structs in its util field
1027 */
1028static int cmp_string_with_push(const void *va, const void *vb)
1029{
1030        const struct string_list_item *a = va;
1031        const struct string_list_item *b = vb;
1032        const struct push_info *a_push = a->util;
1033        const struct push_info *b_push = b->util;
1034        int cmp = strcmp(a->string, b->string);
1035        return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
1036}
1037
1038static int show_push_info_item(struct string_list_item *item, void *cb_data)
1039{
1040        struct show_info *show_info = cb_data;
1041        struct push_info *push_info = item->util;
1042        char *src = item->string, *status = NULL;
1043
1044        switch (push_info->status) {
1045        case PUSH_STATUS_CREATE:
1046                status = "create";
1047                break;
1048        case PUSH_STATUS_DELETE:
1049                status = "delete";
1050                src = "(none)";
1051                break;
1052        case PUSH_STATUS_UPTODATE:
1053                status = "up to date";
1054                break;
1055        case PUSH_STATUS_FASTFORWARD:
1056                status = "fast-forwardable";
1057                break;
1058        case PUSH_STATUS_OUTOFDATE:
1059                status = "local out of date";
1060                break;
1061        case PUSH_STATUS_NOTQUERIED:
1062                break;
1063        }
1064        if (status)
1065                printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
1066                        push_info->forced ? "forces" : "pushes",
1067                        show_info->width2, push_info->dest, status);
1068        else
1069                printf("    %-*s %s to %s\n", show_info->width, src,
1070                        push_info->forced ? "forces" : "pushes",
1071                        push_info->dest);
1072        return 0;
1073}
1074
1075static int show(int argc, const char **argv)
1076{
1077        int no_query = 0, result = 0, query_flag = 0;
1078        struct option options[] = {
1079                OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
1080                OPT_END()
1081        };
1082        struct ref_states states;
1083        struct string_list info_list = STRING_LIST_INIT_NODUP;
1084        struct show_info info;
1085
1086        argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
1087                             0);
1088
1089        if (argc < 1)
1090                return show_all();
1091
1092        if (!no_query)
1093                query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
1094
1095        memset(&states, 0, sizeof(states));
1096        memset(&info, 0, sizeof(info));
1097        info.states = &states;
1098        info.list = &info_list;
1099        for (; argc; argc--, argv++) {
1100                int i;
1101                const char **url;
1102                int url_nr;
1103
1104                get_remote_ref_states(*argv, &states, query_flag);
1105
1106                printf("* remote %s\n", *argv);
1107                printf("  Fetch URL: %s\n", states.remote->url_nr > 0 ?
1108                        states.remote->url[0] : "(no URL)");
1109                if (states.remote->pushurl_nr) {
1110                        url = states.remote->pushurl;
1111                        url_nr = states.remote->pushurl_nr;
1112                } else {
1113                        url = states.remote->url;
1114                        url_nr = states.remote->url_nr;
1115                }
1116                for (i=0; i < url_nr; i++)
1117                        printf("  Push  URL: %s\n", url[i]);
1118                if (!i)
1119                        printf("  Push  URL: %s\n", "(no URL)");
1120                if (no_query)
1121                        printf("  HEAD branch: (not queried)\n");
1122                else if (!states.heads.nr)
1123                        printf("  HEAD branch: (unknown)\n");
1124                else if (states.heads.nr == 1)
1125                        printf("  HEAD branch: %s\n", states.heads.items[0].string);
1126                else {
1127                        printf("  HEAD branch (remote HEAD is ambiguous,"
1128                               " may be one of the following):\n");
1129                        for (i = 0; i < states.heads.nr; i++)
1130                                printf("    %s\n", states.heads.items[i].string);
1131                }
1132
1133                /* remote branch info */
1134                info.width = 0;
1135                for_each_string_list(&states.new, add_remote_to_show_info, &info);
1136                for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
1137                for_each_string_list(&states.stale, add_remote_to_show_info, &info);
1138                if (info.list->nr)
1139                        printf("  Remote branch%s:%s\n",
1140                               info.list->nr > 1 ? "es" : "",
1141                                no_query ? " (status not queried)" : "");
1142                for_each_string_list(info.list, show_remote_info_item, &info);
1143                string_list_clear(info.list, 0);
1144
1145                /* git pull info */
1146                info.width = 0;
1147                info.any_rebase = 0;
1148                for_each_string_list(&branch_list, add_local_to_show_info, &info);
1149                if (info.list->nr)
1150                        printf("  Local branch%s configured for 'git pull':\n",
1151                               info.list->nr > 1 ? "es" : "");
1152                for_each_string_list(info.list, show_local_info_item, &info);
1153                string_list_clear(info.list, 0);
1154
1155                /* git push info */
1156                if (states.remote->mirror)
1157                        printf("  Local refs will be mirrored by 'git push'\n");
1158
1159                info.width = info.width2 = 0;
1160                for_each_string_list(&states.push, add_push_to_show_info, &info);
1161                qsort(info.list->items, info.list->nr,
1162                        sizeof(*info.list->items), cmp_string_with_push);
1163                if (info.list->nr)
1164                        printf("  Local ref%s configured for 'git push'%s:\n",
1165                                info.list->nr > 1 ? "s" : "",
1166                                no_query ? " (status not queried)" : "");
1167                for_each_string_list(info.list, show_push_info_item, &info);
1168                string_list_clear(info.list, 0);
1169
1170                free_remote_ref_states(&states);
1171        }
1172
1173        return result;
1174}
1175
1176static int set_head(int argc, const char **argv)
1177{
1178        int i, opt_a = 0, opt_d = 0, result = 0;
1179        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1180        char *head_name = NULL;
1181
1182        struct option options[] = {
1183                OPT_BOOLEAN('a', "auto", &opt_a,
1184                            "set refs/remotes/<name>/HEAD according to remote"),
1185                OPT_BOOLEAN('d', "delete", &opt_d,
1186                            "delete refs/remotes/<name>/HEAD"),
1187                OPT_END()
1188        };
1189        argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
1190                             0);
1191        if (argc)
1192                strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1193
1194        if (!opt_a && !opt_d && argc == 2) {
1195                head_name = xstrdup(argv[1]);
1196        } else if (opt_a && !opt_d && argc == 1) {
1197                struct ref_states states;
1198                memset(&states, 0, sizeof(states));
1199                get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1200                if (!states.heads.nr)
1201                        result |= error("Cannot determine remote HEAD");
1202                else if (states.heads.nr > 1) {
1203                        result |= error("Multiple remote HEAD branches. "
1204                                        "Please choose one explicitly with:");
1205                        for (i = 0; i < states.heads.nr; i++)
1206                                fprintf(stderr, "  git remote set-head %s %s\n",
1207                                        argv[0], states.heads.items[i].string);
1208                } else
1209                        head_name = xstrdup(states.heads.items[0].string);
1210                free_remote_ref_states(&states);
1211        } else if (opt_d && !opt_a && argc == 1) {
1212                if (delete_ref(buf.buf, NULL, REF_NODEREF))
1213                        result |= error("Could not delete %s", buf.buf);
1214        } else
1215                usage_with_options(builtin_remote_sethead_usage, options);
1216
1217        if (head_name) {
1218                unsigned char sha1[20];
1219                strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1220                /* make sure it's valid */
1221                if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1222                        result |= error("Not a valid ref: %s", buf2.buf);
1223                else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1224                        result |= error("Could not setup %s", buf.buf);
1225                if (opt_a)
1226                        printf("%s/HEAD set to %s\n", argv[0], head_name);
1227                free(head_name);
1228        }
1229
1230        strbuf_release(&buf);
1231        strbuf_release(&buf2);
1232        return result;
1233}
1234
1235static int prune(int argc, const char **argv)
1236{
1237        int dry_run = 0, result = 0;
1238        struct option options[] = {
1239                OPT__DRY_RUN(&dry_run, "dry run"),
1240                OPT_END()
1241        };
1242
1243        argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
1244                             0);
1245
1246        if (argc < 1)
1247                usage_with_options(builtin_remote_prune_usage, options);
1248
1249        for (; argc; argc--, argv++)
1250                result |= prune_remote(*argv, dry_run);
1251
1252        return result;
1253}
1254
1255static int prune_remote(const char *remote, int dry_run)
1256{
1257        int result = 0, i;
1258        struct ref_states states;
1259        const char *dangling_msg = dry_run
1260                ? " %s will become dangling!\n"
1261                : " %s has become dangling!\n";
1262
1263        memset(&states, 0, sizeof(states));
1264        get_remote_ref_states(remote, &states, GET_REF_STATES);
1265
1266        if (states.stale.nr) {
1267                printf("Pruning %s\n", remote);
1268                printf("URL: %s\n",
1269                       states.remote->url_nr
1270                       ? states.remote->url[0]
1271                       : "(no URL)");
1272        }
1273
1274        for (i = 0; i < states.stale.nr; i++) {
1275                const char *refname = states.stale.items[i].util;
1276
1277                if (!dry_run)
1278                        result |= delete_ref(refname, NULL, 0);
1279
1280                printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1281                       abbrev_ref(refname, "refs/remotes/"));
1282                warn_dangling_symref(stdout, dangling_msg, refname);
1283        }
1284
1285        free_remote_ref_states(&states);
1286        return result;
1287}
1288
1289static int get_remote_default(const char *key, const char *value, void *priv)
1290{
1291        if (strcmp(key, "remotes.default") == 0) {
1292                int *found = priv;
1293                *found = 1;
1294        }
1295        return 0;
1296}
1297
1298static int update(int argc, const char **argv)
1299{
1300        int i, prune = 0;
1301        struct option options[] = {
1302                OPT_BOOLEAN('p', "prune", &prune,
1303                            "prune remotes after fetching"),
1304                OPT_END()
1305        };
1306        const char **fetch_argv;
1307        int fetch_argc = 0;
1308        int default_defined = 0;
1309
1310        fetch_argv = xmalloc(sizeof(char *) * (argc+5));
1311
1312        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1313                             PARSE_OPT_KEEP_ARGV0);
1314
1315        fetch_argv[fetch_argc++] = "fetch";
1316
1317        if (prune)
1318                fetch_argv[fetch_argc++] = "--prune";
1319        if (verbose)
1320                fetch_argv[fetch_argc++] = "-v";
1321        fetch_argv[fetch_argc++] = "--multiple";
1322        if (argc < 2)
1323                fetch_argv[fetch_argc++] = "default";
1324        for (i = 1; i < argc; i++)
1325                fetch_argv[fetch_argc++] = argv[i];
1326
1327        if (strcmp(fetch_argv[fetch_argc-1], "default") == 0) {
1328                git_config(get_remote_default, &default_defined);
1329                if (!default_defined)
1330                        fetch_argv[fetch_argc-1] = "--all";
1331        }
1332
1333        fetch_argv[fetch_argc] = NULL;
1334
1335        return run_command_v_opt(fetch_argv, RUN_GIT_CMD);
1336}
1337
1338static int remove_all_fetch_refspecs(const char *remote, const char *key)
1339{
1340        return git_config_set_multivar(key, NULL, NULL, 1);
1341}
1342
1343static int add_branches(struct remote *remote, const char **branches,
1344                        const char *key)
1345{
1346        const char *remotename = remote->name;
1347        int mirror = remote->mirror;
1348        struct strbuf refspec = STRBUF_INIT;
1349
1350        for (; *branches; branches++)
1351                if (add_branch(key, *branches, remotename, mirror, &refspec)) {
1352                        strbuf_release(&refspec);
1353                        return 1;
1354                }
1355
1356        strbuf_release(&refspec);
1357        return 0;
1358}
1359
1360static int set_remote_branches(const char *remotename, const char **branches,
1361                                int add_mode)
1362{
1363        struct strbuf key = STRBUF_INIT;
1364        struct remote *remote;
1365
1366        strbuf_addf(&key, "remote.%s.fetch", remotename);
1367
1368        if (!remote_is_configured(remotename))
1369                die("No such remote '%s'", remotename);
1370        remote = remote_get(remotename);
1371
1372        if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
1373                strbuf_release(&key);
1374                return 1;
1375        }
1376        if (add_branches(remote, branches, key.buf)) {
1377                strbuf_release(&key);
1378                return 1;
1379        }
1380
1381        strbuf_release(&key);
1382        return 0;
1383}
1384
1385static int set_branches(int argc, const char **argv)
1386{
1387        int add_mode = 0;
1388        struct option options[] = {
1389                OPT_BOOLEAN('\0', "add", &add_mode, "add branch"),
1390                OPT_END()
1391        };
1392
1393        argc = parse_options(argc, argv, NULL, options,
1394                             builtin_remote_setbranches_usage, 0);
1395        if (argc == 0) {
1396                error("no remote specified");
1397                usage_with_options(builtin_remote_seturl_usage, options);
1398        }
1399        argv[argc] = NULL;
1400
1401        return set_remote_branches(argv[0], argv + 1, add_mode);
1402}
1403
1404static int set_url(int argc, const char **argv)
1405{
1406        int i, push_mode = 0, add_mode = 0, delete_mode = 0;
1407        int matches = 0, negative_matches = 0;
1408        const char *remotename = NULL;
1409        const char *newurl = NULL;
1410        const char *oldurl = NULL;
1411        struct remote *remote;
1412        regex_t old_regex;
1413        const char **urlset;
1414        int urlset_nr;
1415        struct strbuf name_buf = STRBUF_INIT;
1416        struct option options[] = {
1417                OPT_BOOLEAN('\0', "push", &push_mode,
1418                            "manipulate push URLs"),
1419                OPT_BOOLEAN('\0', "add", &add_mode,
1420                            "add URL"),
1421                OPT_BOOLEAN('\0', "delete", &delete_mode,
1422                            "delete URLs"),
1423                OPT_END()
1424        };
1425        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
1426                             PARSE_OPT_KEEP_ARGV0);
1427
1428        if (add_mode && delete_mode)
1429                die("--add --delete doesn't make sense");
1430
1431        if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
1432                usage_with_options(builtin_remote_seturl_usage, options);
1433
1434        remotename = argv[1];
1435        newurl = argv[2];
1436        if (argc > 3)
1437                oldurl = argv[3];
1438
1439        if (delete_mode)
1440                oldurl = newurl;
1441
1442        if (!remote_is_configured(remotename))
1443                die("No such remote '%s'", remotename);
1444        remote = remote_get(remotename);
1445
1446        if (push_mode) {
1447                strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
1448                urlset = remote->pushurl;
1449                urlset_nr = remote->pushurl_nr;
1450        } else {
1451                strbuf_addf(&name_buf, "remote.%s.url", remotename);
1452                urlset = remote->url;
1453                urlset_nr = remote->url_nr;
1454        }
1455
1456        /* Special cases that add new entry. */
1457        if ((!oldurl && !delete_mode) || add_mode) {
1458                if (add_mode)
1459                        git_config_set_multivar(name_buf.buf, newurl,
1460                                "^$", 0);
1461                else
1462                        git_config_set(name_buf.buf, newurl);
1463                strbuf_release(&name_buf);
1464                return 0;
1465        }
1466
1467        /* Old URL specified. Demand that one matches. */
1468        if (regcomp(&old_regex, oldurl, REG_EXTENDED))
1469                die("Invalid old URL pattern: %s", oldurl);
1470
1471        for (i = 0; i < urlset_nr; i++)
1472                if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
1473                        matches++;
1474                else
1475                        negative_matches++;
1476        if (!delete_mode && !matches)
1477                die("No such URL found: %s", oldurl);
1478        if (delete_mode && !negative_matches && !push_mode)
1479                die("Will not delete all non-push URLs");
1480
1481        regfree(&old_regex);
1482
1483        if (!delete_mode)
1484                git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
1485        else
1486                git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
1487        return 0;
1488}
1489
1490static int get_one_entry(struct remote *remote, void *priv)
1491{
1492        struct string_list *list = priv;
1493        struct strbuf url_buf = STRBUF_INIT;
1494        const char **url;
1495        int i, url_nr;
1496
1497        if (remote->url_nr > 0) {
1498                strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
1499                string_list_append(list, remote->name)->util =
1500                                strbuf_detach(&url_buf, NULL);
1501        } else
1502                string_list_append(list, remote->name)->util = NULL;
1503        if (remote->pushurl_nr) {
1504                url = remote->pushurl;
1505                url_nr = remote->pushurl_nr;
1506        } else {
1507                url = remote->url;
1508                url_nr = remote->url_nr;
1509        }
1510        for (i = 0; i < url_nr; i++)
1511        {
1512                strbuf_addf(&url_buf, "%s (push)", url[i]);
1513                string_list_append(list, remote->name)->util =
1514                                strbuf_detach(&url_buf, NULL);
1515        }
1516
1517        return 0;
1518}
1519
1520static int show_all(void)
1521{
1522        struct string_list list = STRING_LIST_INIT_NODUP;
1523        int result;
1524
1525        list.strdup_strings = 1;
1526        result = for_each_remote(get_one_entry, &list);
1527
1528        if (!result) {
1529                int i;
1530
1531                sort_string_list(&list);
1532                for (i = 0; i < list.nr; i++) {
1533                        struct string_list_item *item = list.items + i;
1534                        if (verbose)
1535                                printf("%s\t%s\n", item->string,
1536                                        item->util ? (const char *)item->util : "");
1537                        else {
1538                                if (i && !strcmp((item - 1)->string, item->string))
1539                                        continue;
1540                                printf("%s\n", item->string);
1541                        }
1542                }
1543        }
1544        string_list_clear(&list, 1);
1545        return result;
1546}
1547
1548int cmd_remote(int argc, const char **argv, const char *prefix)
1549{
1550        struct option options[] = {
1551                OPT__VERBOSE(&verbose, "be verbose; must be placed before a subcommand"),
1552                OPT_END()
1553        };
1554        int result;
1555
1556        argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
1557                PARSE_OPT_STOP_AT_NON_OPTION);
1558
1559        if (argc < 1)
1560                result = show_all();
1561        else if (!strcmp(argv[0], "add"))
1562                result = add(argc, argv);
1563        else if (!strcmp(argv[0], "rename"))
1564                result = mv(argc, argv);
1565        else if (!strcmp(argv[0], "rm"))
1566                result = rm(argc, argv);
1567        else if (!strcmp(argv[0], "set-head"))
1568                result = set_head(argc, argv);
1569        else if (!strcmp(argv[0], "set-branches"))
1570                result = set_branches(argc, argv);
1571        else if (!strcmp(argv[0], "set-url"))
1572                result = set_url(argc, argv);
1573        else if (!strcmp(argv[0], "show"))
1574                result = show(argc, argv);
1575        else if (!strcmp(argv[0], "prune"))
1576                result = prune(argc, argv);
1577        else if (!strcmp(argv[0], "update"))
1578                result = update(argc, argv);
1579        else {
1580                error("Unknown subcommand: %s", argv[0]);
1581                usage_with_options(builtin_remote_usage, options);
1582        }
1583
1584        return result ? 1 : 0;
1585}