Andrew's git / gitweb.git / builtin-remote.c
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builtin-remote.con commit mergetool: Don't keep temporary merge files unless told to (162eba8)
   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",
  12        "git remote add <name> <url>",
  13        "git remote rename <old> <new>",
  14        "git remote rm <name>",
  15        "git remote show <name>",
  16        "git remote prune <name>",
  17        "git remote update [group]",
  18        NULL
  19};
  20
  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 };
  46        printf("Updating %s\n", name);
  47        if (run_command_v_opt(argv, RUN_GIT_CMD))
  48                return error("Could not fetch %s", name);
  49        return 0;
  50}
  51
  52static int add(int argc, const char **argv)
  53{
  54        int fetch = 0, mirror = 0;
  55        struct string_list track = { NULL, 0, 0 };
  56        const char *master = NULL;
  57        struct remote *remote;
  58        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
  59        const char *name, *url;
  60        int i;
  61
  62        struct option options[] = {
  63                OPT_GROUP("add specific options"),
  64                OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
  65                OPT_CALLBACK('t', "track", &track, "branch",
  66                        "branch(es) to track", opt_parse_track),
  67                OPT_STRING('m', "master", &master, "branch", "master branch"),
  68                OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
  69                OPT_END()
  70        };
  71
  72        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
  73
  74        if (argc < 2)
  75                usage_with_options(builtin_remote_usage, options);
  76
  77        name = argv[0];
  78        url = argv[1];
  79
  80        remote = remote_get(name);
  81        if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
  82                        remote->fetch_refspec_nr))
  83                die("remote %s already exists.", name);
  84
  85        strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
  86        if (!valid_fetch_refspec(buf2.buf))
  87                die("'%s' is not a valid remote name", name);
  88
  89        strbuf_addf(&buf, "remote.%s.url", name);
  90        if (git_config_set(buf.buf, url))
  91                return 1;
  92
  93        strbuf_reset(&buf);
  94        strbuf_addf(&buf, "remote.%s.fetch", name);
  95
  96        if (track.nr == 0)
  97                string_list_append("*", &track);
  98        for (i = 0; i < track.nr; i++) {
  99                struct string_list_item *item = track.items + i;
 100
 101                strbuf_reset(&buf2);
 102                strbuf_addch(&buf2, '+');
 103                if (mirror)
 104                        strbuf_addf(&buf2, "refs/%s:refs/%s",
 105                                        item->string, item->string);
 106                else
 107                        strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
 108                                        item->string, name, item->string);
 109                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 110                        return 1;
 111        }
 112
 113        if (mirror) {
 114                strbuf_reset(&buf);
 115                strbuf_addf(&buf, "remote.%s.mirror", name);
 116                if (git_config_set(buf.buf, "true"))
 117                        return 1;
 118        }
 119
 120        if (fetch && fetch_remote(name))
 121                return 1;
 122
 123        if (master) {
 124                strbuf_reset(&buf);
 125                strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 126
 127                strbuf_reset(&buf2);
 128                strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 129
 130                if (create_symref(buf.buf, buf2.buf, "remote add"))
 131                        return error("Could not setup master '%s'", master);
 132        }
 133
 134        strbuf_release(&buf);
 135        strbuf_release(&buf2);
 136        string_list_clear(&track, 0);
 137
 138        return 0;
 139}
 140
 141struct branch_info {
 142        char *remote;
 143        struct string_list merge;
 144};
 145
 146static struct string_list branch_list;
 147
 148static const char *abbrev_ref(const char *name, const char *prefix)
 149{
 150        const char *abbrev = skip_prefix(name, prefix);
 151        if (abbrev)
 152                return abbrev;
 153        return name;
 154}
 155#define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 156
 157static int config_read_branches(const char *key, const char *value, void *cb)
 158{
 159        if (!prefixcmp(key, "branch.")) {
 160                char *name;
 161                struct string_list_item *item;
 162                struct branch_info *info;
 163                enum { REMOTE, MERGE } type;
 164
 165                key += 7;
 166                if (!postfixcmp(key, ".remote")) {
 167                        name = xstrndup(key, strlen(key) - 7);
 168                        type = REMOTE;
 169                } else if (!postfixcmp(key, ".merge")) {
 170                        name = xstrndup(key, strlen(key) - 6);
 171                        type = MERGE;
 172                } else
 173                        return 0;
 174
 175                item = string_list_insert(name, &branch_list);
 176
 177                if (!item->util)
 178                        item->util = xcalloc(sizeof(struct branch_info), 1);
 179                info = item->util;
 180                if (type == REMOTE) {
 181                        if (info->remote)
 182                                warning("more than one branch.%s", key);
 183                        info->remote = xstrdup(value);
 184                } else {
 185                        char *space = strchr(value, ' ');
 186                        value = abbrev_branch(value);
 187                        while (space) {
 188                                char *merge;
 189                                merge = xstrndup(value, space - value);
 190                                string_list_append(merge, &info->merge);
 191                                value = abbrev_branch(space + 1);
 192                                space = strchr(value, ' ');
 193                        }
 194                        string_list_append(xstrdup(value), &info->merge);
 195                }
 196        }
 197        return 0;
 198}
 199
 200static void read_branches(void)
 201{
 202        if (branch_list.nr)
 203                return;
 204        git_config(config_read_branches, NULL);
 205        sort_string_list(&branch_list);
 206}
 207
 208struct ref_states {
 209        struct remote *remote;
 210        struct string_list new, stale, tracked;
 211};
 212
 213static int handle_one_branch(const char *refname,
 214        const unsigned char *sha1, int flags, void *cb_data)
 215{
 216        struct ref_states *states = cb_data;
 217        struct refspec refspec;
 218
 219        memset(&refspec, 0, sizeof(refspec));
 220        refspec.dst = (char *)refname;
 221        if (!remote_find_tracking(states->remote, &refspec)) {
 222                struct string_list_item *item;
 223                const char *name = abbrev_branch(refspec.src);
 224                /* symbolic refs pointing nowhere were handled already */
 225                if ((flags & REF_ISSYMREF) ||
 226                                unsorted_string_list_has_string(&states->tracked,
 227                                        name) ||
 228                                unsorted_string_list_has_string(&states->new,
 229                                        name))
 230                        return 0;
 231                item = string_list_append(name, &states->stale);
 232                item->util = xstrdup(refname);
 233        }
 234        return 0;
 235}
 236
 237static int get_ref_states(const struct ref *ref, struct ref_states *states)
 238{
 239        struct ref *fetch_map = NULL, **tail = &fetch_map;
 240        int i;
 241
 242        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 243                if (get_fetch_map(ref, states->remote->fetch + i, &tail, 1))
 244                        die("Could not get fetch map for refspec %s",
 245                                states->remote->fetch_refspec[i]);
 246
 247        states->new.strdup_strings = states->tracked.strdup_strings = 1;
 248        for (ref = fetch_map; ref; ref = ref->next) {
 249                struct string_list *target = &states->tracked;
 250                unsigned char sha1[20];
 251                void *util = NULL;
 252
 253                if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 254                        target = &states->new;
 255                else {
 256                        target = &states->tracked;
 257                        if (hashcmp(sha1, ref->new_sha1))
 258                                util = &states;
 259                }
 260                string_list_append(abbrev_branch(ref->name), target)->util = util;
 261        }
 262        free_refs(fetch_map);
 263
 264        for_each_ref(handle_one_branch, states);
 265        sort_string_list(&states->stale);
 266
 267        return 0;
 268}
 269
 270struct known_remote {
 271        struct known_remote *next;
 272        struct remote *remote;
 273};
 274
 275struct known_remotes {
 276        struct remote *to_delete;
 277        struct known_remote *list;
 278};
 279
 280static int add_known_remote(struct remote *remote, void *cb_data)
 281{
 282        struct known_remotes *all = cb_data;
 283        struct known_remote *r;
 284
 285        if (!strcmp(all->to_delete->name, remote->name))
 286                return 0;
 287
 288        r = xmalloc(sizeof(*r));
 289        r->remote = remote;
 290        r->next = all->list;
 291        all->list = r;
 292        return 0;
 293}
 294
 295struct branches_for_remote {
 296        struct remote *remote;
 297        struct string_list *branches;
 298        struct known_remotes *keep;
 299};
 300
 301static int add_branch_for_removal(const char *refname,
 302        const unsigned char *sha1, int flags, void *cb_data)
 303{
 304        struct branches_for_remote *branches = cb_data;
 305        struct refspec refspec;
 306        struct string_list_item *item;
 307        struct known_remote *kr;
 308
 309        memset(&refspec, 0, sizeof(refspec));
 310        refspec.dst = (char *)refname;
 311        if (remote_find_tracking(branches->remote, &refspec))
 312                return 0;
 313
 314        /* don't delete a branch if another remote also uses it */
 315        for (kr = branches->keep->list; kr; kr = kr->next) {
 316                memset(&refspec, 0, sizeof(refspec));
 317                refspec.dst = (char *)refname;
 318                if (!remote_find_tracking(kr->remote, &refspec))
 319                        return 0;
 320        }
 321
 322        /* make sure that symrefs are deleted */
 323        if (flags & REF_ISSYMREF)
 324                return unlink(git_path("%s", refname));
 325
 326        item = string_list_append(refname, branches->branches);
 327        item->util = xmalloc(20);
 328        hashcpy(item->util, sha1);
 329
 330        return 0;
 331}
 332
 333struct rename_info {
 334        const char *old;
 335        const char *new;
 336        struct string_list *remote_branches;
 337};
 338
 339static int read_remote_branches(const char *refname,
 340        const unsigned char *sha1, int flags, void *cb_data)
 341{
 342        struct rename_info *rename = cb_data;
 343        struct strbuf buf = STRBUF_INIT;
 344        struct string_list_item *item;
 345        int flag;
 346        unsigned char orig_sha1[20];
 347        const char *symref;
 348
 349        strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 350        if(!prefixcmp(refname, buf.buf)) {
 351                item = string_list_append(xstrdup(refname), rename->remote_branches);
 352                symref = resolve_ref(refname, orig_sha1, 1, &flag);
 353                if (flag & REF_ISSYMREF)
 354                        item->util = xstrdup(symref);
 355                else
 356                        item->util = NULL;
 357        }
 358
 359        return 0;
 360}
 361
 362static int migrate_file(struct remote *remote)
 363{
 364        struct strbuf buf = STRBUF_INIT;
 365        int i;
 366        char *path = NULL;
 367
 368        strbuf_addf(&buf, "remote.%s.url", remote->name);
 369        for (i = 0; i < remote->url_nr; i++)
 370                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 371                        return error("Could not append '%s' to '%s'",
 372                                        remote->url[i], buf.buf);
 373        strbuf_reset(&buf);
 374        strbuf_addf(&buf, "remote.%s.push", remote->name);
 375        for (i = 0; i < remote->push_refspec_nr; i++)
 376                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 377                        return error("Could not append '%s' to '%s'",
 378                                        remote->push_refspec[i], buf.buf);
 379        strbuf_reset(&buf);
 380        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 381        for (i = 0; i < remote->fetch_refspec_nr; i++)
 382                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 383                        return error("Could not append '%s' to '%s'",
 384                                        remote->fetch_refspec[i], buf.buf);
 385        if (remote->origin == REMOTE_REMOTES)
 386                path = git_path("remotes/%s", remote->name);
 387        else if (remote->origin == REMOTE_BRANCHES)
 388                path = git_path("branches/%s", remote->name);
 389        if (path && unlink(path))
 390                warning("failed to remove '%s'", path);
 391        return 0;
 392}
 393
 394static int mv(int argc, const char **argv)
 395{
 396        struct option options[] = {
 397                OPT_END()
 398        };
 399        struct remote *oldremote, *newremote;
 400        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 401        struct string_list remote_branches = { NULL, 0, 0, 0 };
 402        struct rename_info rename;
 403        int i;
 404
 405        if (argc != 3)
 406                usage_with_options(builtin_remote_usage, options);
 407
 408        rename.old = argv[1];
 409        rename.new = argv[2];
 410        rename.remote_branches = &remote_branches;
 411
 412        oldremote = remote_get(rename.old);
 413        if (!oldremote)
 414                die("No such remote: %s", rename.old);
 415
 416        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 417                return migrate_file(oldremote);
 418
 419        newremote = remote_get(rename.new);
 420        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 421                die("remote %s already exists.", rename.new);
 422
 423        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 424        if (!valid_fetch_refspec(buf.buf))
 425                die("'%s' is not a valid remote name", rename.new);
 426
 427        strbuf_reset(&buf);
 428        strbuf_addf(&buf, "remote.%s", rename.old);
 429        strbuf_addf(&buf2, "remote.%s", rename.new);
 430        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 431                return error("Could not rename config section '%s' to '%s'",
 432                                buf.buf, buf2.buf);
 433
 434        strbuf_reset(&buf);
 435        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 436        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 437                return error("Could not remove config section '%s'", buf.buf);
 438        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 439                char *ptr;
 440
 441                strbuf_reset(&buf2);
 442                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 443                ptr = strstr(buf2.buf, rename.old);
 444                if (ptr)
 445                        strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 446                                        rename.new, strlen(rename.new));
 447                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 448                        return error("Could not append '%s'", buf.buf);
 449        }
 450
 451        read_branches();
 452        for (i = 0; i < branch_list.nr; i++) {
 453                struct string_list_item *item = branch_list.items + i;
 454                struct branch_info *info = item->util;
 455                if (info->remote && !strcmp(info->remote, rename.old)) {
 456                        strbuf_reset(&buf);
 457                        strbuf_addf(&buf, "branch.%s.remote", item->string);
 458                        if (git_config_set(buf.buf, rename.new)) {
 459                                return error("Could not set '%s'", buf.buf);
 460                        }
 461                }
 462        }
 463
 464        /*
 465         * First remove symrefs, then rename the rest, finally create
 466         * the new symrefs.
 467         */
 468        for_each_ref(read_remote_branches, &rename);
 469        for (i = 0; i < remote_branches.nr; i++) {
 470                struct string_list_item *item = remote_branches.items + i;
 471                int flag = 0;
 472                unsigned char sha1[20];
 473                const char *symref;
 474
 475                symref = resolve_ref(item->string, sha1, 1, &flag);
 476                if (!(flag & REF_ISSYMREF))
 477                        continue;
 478                if (delete_ref(item->string, NULL, REF_NODEREF))
 479                        die("deleting '%s' failed", item->string);
 480        }
 481        for (i = 0; i < remote_branches.nr; i++) {
 482                struct string_list_item *item = remote_branches.items + i;
 483
 484                if (item->util)
 485                        continue;
 486                strbuf_reset(&buf);
 487                strbuf_addstr(&buf, item->string);
 488                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 489                                rename.new, strlen(rename.new));
 490                strbuf_reset(&buf2);
 491                strbuf_addf(&buf2, "remote: renamed %s to %s",
 492                                item->string, buf.buf);
 493                if (rename_ref(item->string, buf.buf, buf2.buf))
 494                        die("renaming '%s' failed", item->string);
 495        }
 496        for (i = 0; i < remote_branches.nr; i++) {
 497                struct string_list_item *item = remote_branches.items + i;
 498
 499                if (!item->util)
 500                        continue;
 501                strbuf_reset(&buf);
 502                strbuf_addstr(&buf, item->string);
 503                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 504                                rename.new, strlen(rename.new));
 505                strbuf_reset(&buf2);
 506                strbuf_addstr(&buf2, item->util);
 507                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 508                                rename.new, strlen(rename.new));
 509                strbuf_reset(&buf3);
 510                strbuf_addf(&buf3, "remote: renamed %s to %s",
 511                                item->string, buf.buf);
 512                if (create_symref(buf.buf, buf2.buf, buf3.buf))
 513                        die("creating '%s' failed", buf.buf);
 514        }
 515        return 0;
 516}
 517
 518static int remove_branches(struct string_list *branches)
 519{
 520        int i, result = 0;
 521        for (i = 0; i < branches->nr; i++) {
 522                struct string_list_item *item = branches->items + i;
 523                const char *refname = item->string;
 524                unsigned char *sha1 = item->util;
 525
 526                if (delete_ref(refname, sha1, 0))
 527                        result |= error("Could not remove branch %s", refname);
 528        }
 529        return result;
 530}
 531
 532static int rm(int argc, const char **argv)
 533{
 534        struct option options[] = {
 535                OPT_END()
 536        };
 537        struct remote *remote;
 538        struct strbuf buf = STRBUF_INIT;
 539        struct known_remotes known_remotes = { NULL, NULL };
 540        struct string_list branches = { NULL, 0, 0, 1 };
 541        struct branches_for_remote cb_data = { NULL, &branches, &known_remotes };
 542        int i;
 543
 544        if (argc != 2)
 545                usage_with_options(builtin_remote_usage, options);
 546
 547        remote = remote_get(argv[1]);
 548        if (!remote)
 549                die("No such remote: %s", argv[1]);
 550
 551        known_remotes.to_delete = remote;
 552        for_each_remote(add_known_remote, &known_remotes);
 553
 554        strbuf_addf(&buf, "remote.%s", remote->name);
 555        if (git_config_rename_section(buf.buf, NULL) < 1)
 556                return error("Could not remove config section '%s'", buf.buf);
 557
 558        read_branches();
 559        for (i = 0; i < branch_list.nr; i++) {
 560                struct string_list_item *item = branch_list.items + i;
 561                struct branch_info *info = item->util;
 562                if (info->remote && !strcmp(info->remote, remote->name)) {
 563                        const char *keys[] = { "remote", "merge", NULL }, **k;
 564                        for (k = keys; *k; k++) {
 565                                strbuf_reset(&buf);
 566                                strbuf_addf(&buf, "branch.%s.%s",
 567                                                item->string, *k);
 568                                if (git_config_set(buf.buf, NULL)) {
 569                                        strbuf_release(&buf);
 570                                        return -1;
 571                                }
 572                        }
 573                }
 574        }
 575
 576        /*
 577         * We cannot just pass a function to for_each_ref() which deletes
 578         * the branches one by one, since for_each_ref() relies on cached
 579         * refs, which are invalidated when deleting a branch.
 580         */
 581        cb_data.remote = remote;
 582        i = for_each_ref(add_branch_for_removal, &cb_data);
 583        strbuf_release(&buf);
 584
 585        if (!i)
 586                i = remove_branches(&branches);
 587        string_list_clear(&branches, 1);
 588
 589        return i;
 590}
 591
 592static void show_list(const char *title, struct string_list *list,
 593                      const char *extra_arg)
 594{
 595        int i;
 596
 597        if (!list->nr)
 598                return;
 599
 600        printf(title, list->nr > 1 ? "es" : "", extra_arg);
 601        printf("\n");
 602        for (i = 0; i < list->nr; i++)
 603                printf("    %s\n", list->items[i].string);
 604}
 605
 606static int get_remote_ref_states(const char *name,
 607                                 struct ref_states *states,
 608                                 int query)
 609{
 610        struct transport *transport;
 611        const struct ref *ref;
 612
 613        states->remote = remote_get(name);
 614        if (!states->remote)
 615                return error("No such remote: %s", name);
 616
 617        read_branches();
 618
 619        if (query) {
 620                transport = transport_get(NULL, states->remote->url_nr > 0 ?
 621                        states->remote->url[0] : NULL);
 622                ref = transport_get_remote_refs(transport);
 623                transport_disconnect(transport);
 624
 625                get_ref_states(ref, states);
 626        }
 627
 628        return 0;
 629}
 630
 631static int append_ref_to_tracked_list(const char *refname,
 632        const unsigned char *sha1, int flags, void *cb_data)
 633{
 634        struct ref_states *states = cb_data;
 635        struct refspec refspec;
 636
 637        memset(&refspec, 0, sizeof(refspec));
 638        refspec.dst = (char *)refname;
 639        if (!remote_find_tracking(states->remote, &refspec))
 640                string_list_append(abbrev_branch(refspec.src), &states->tracked);
 641
 642        return 0;
 643}
 644
 645static int show(int argc, const char **argv)
 646{
 647        int no_query = 0, result = 0;
 648        struct option options[] = {
 649                OPT_GROUP("show specific options"),
 650                OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
 651                OPT_END()
 652        };
 653        struct ref_states states;
 654
 655        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 656
 657        if (argc < 1)
 658                return show_all();
 659
 660        memset(&states, 0, sizeof(states));
 661        for (; argc; argc--, argv++) {
 662                int i;
 663
 664                get_remote_ref_states(*argv, &states, !no_query);
 665
 666                printf("* remote %s\n  URL: %s\n", *argv,
 667                        states.remote->url_nr > 0 ?
 668                                states.remote->url[0] : "(no URL)");
 669
 670                for (i = 0; i < branch_list.nr; i++) {
 671                        struct string_list_item *branch = branch_list.items + i;
 672                        struct branch_info *info = branch->util;
 673                        int j;
 674
 675                        if (!info->merge.nr || strcmp(*argv, info->remote))
 676                                continue;
 677                        printf("  Remote branch%s merged with 'git pull' "
 678                                "while on branch %s\n   ",
 679                                info->merge.nr > 1 ? "es" : "",
 680                                branch->string);
 681                        for (j = 0; j < info->merge.nr; j++)
 682                                printf(" %s", info->merge.items[j].string);
 683                        printf("\n");
 684                }
 685
 686                if (!no_query) {
 687                        show_list("  New remote branch%s (next fetch "
 688                                "will store in remotes/%s)",
 689                                &states.new, states.remote->name);
 690                        show_list("  Stale tracking branch%s (use 'git remote "
 691                                "prune')", &states.stale, "");
 692                }
 693
 694                if (no_query)
 695                        for_each_ref(append_ref_to_tracked_list, &states);
 696                show_list("  Tracked remote branch%s", &states.tracked, "");
 697
 698                if (states.remote->push_refspec_nr) {
 699                        printf("  Local branch%s pushed with 'git push'\n",
 700                                states.remote->push_refspec_nr > 1 ?
 701                                        "es" : "");
 702                        for (i = 0; i < states.remote->push_refspec_nr; i++) {
 703                                struct refspec *spec = states.remote->push + i;
 704                                printf("    %s%s%s%s\n",
 705                                       spec->force ? "+" : "",
 706                                       abbrev_branch(spec->src),
 707                                       spec->dst ? ":" : "",
 708                                       spec->dst ? abbrev_branch(spec->dst) : "");
 709                        }
 710                }
 711
 712                /* NEEDSWORK: free remote */
 713                string_list_clear(&states.new, 0);
 714                string_list_clear(&states.stale, 0);
 715                string_list_clear(&states.tracked, 0);
 716        }
 717
 718        return result;
 719}
 720
 721static int prune(int argc, const char **argv)
 722{
 723        int dry_run = 0, result = 0;
 724        struct option options[] = {
 725                OPT_GROUP("prune specific options"),
 726                OPT__DRY_RUN(&dry_run),
 727                OPT_END()
 728        };
 729        struct ref_states states;
 730
 731        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 732
 733        if (argc < 1)
 734                usage_with_options(builtin_remote_usage, options);
 735
 736        memset(&states, 0, sizeof(states));
 737        for (; argc; argc--, argv++) {
 738                int i;
 739
 740                get_remote_ref_states(*argv, &states, 1);
 741
 742                if (states.stale.nr) {
 743                        printf("Pruning %s\n", *argv);
 744                        printf("URL: %s\n",
 745                               states.remote->url_nr
 746                               ? states.remote->url[0]
 747                               : "(no URL)");
 748                }
 749
 750                for (i = 0; i < states.stale.nr; i++) {
 751                        const char *refname = states.stale.items[i].util;
 752
 753                        if (!dry_run)
 754                                result |= delete_ref(refname, NULL, 0);
 755
 756                        printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
 757                               abbrev_ref(refname, "refs/remotes/"));
 758                }
 759
 760                /* NEEDSWORK: free remote */
 761                string_list_clear(&states.new, 0);
 762                string_list_clear(&states.stale, 0);
 763                string_list_clear(&states.tracked, 0);
 764        }
 765
 766        return result;
 767}
 768
 769static int get_one_remote_for_update(struct remote *remote, void *priv)
 770{
 771        struct string_list *list = priv;
 772        if (!remote->skip_default_update)
 773                string_list_append(xstrdup(remote->name), list);
 774        return 0;
 775}
 776
 777struct remote_group {
 778        const char *name;
 779        struct string_list *list;
 780} remote_group;
 781
 782static int get_remote_group(const char *key, const char *value, void *cb)
 783{
 784        if (!prefixcmp(key, "remotes.") &&
 785                        !strcmp(key + 8, remote_group.name)) {
 786                /* split list by white space */
 787                int space = strcspn(value, " \t\n");
 788                while (*value) {
 789                        if (space > 1)
 790                                string_list_append(xstrndup(value, space),
 791                                                remote_group.list);
 792                        value += space + (value[space] != '\0');
 793                        space = strcspn(value, " \t\n");
 794                }
 795        }
 796
 797        return 0;
 798}
 799
 800static int update(int argc, const char **argv)
 801{
 802        int i, result = 0;
 803        struct string_list list = { NULL, 0, 0, 0 };
 804        static const char *default_argv[] = { NULL, "default", NULL };
 805
 806        if (argc < 2) {
 807                argc = 2;
 808                argv = default_argv;
 809        }
 810
 811        remote_group.list = &list;
 812        for (i = 1; i < argc; i++) {
 813                remote_group.name = argv[i];
 814                result = git_config(get_remote_group, NULL);
 815        }
 816
 817        if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
 818                result = for_each_remote(get_one_remote_for_update, &list);
 819
 820        for (i = 0; i < list.nr; i++)
 821                result |= fetch_remote(list.items[i].string);
 822
 823        /* all names were strdup()ed or strndup()ed */
 824        list.strdup_strings = 1;
 825        string_list_clear(&list, 0);
 826
 827        return result;
 828}
 829
 830static int get_one_entry(struct remote *remote, void *priv)
 831{
 832        struct string_list *list = priv;
 833
 834        if (remote->url_nr > 0) {
 835                int i;
 836
 837                for (i = 0; i < remote->url_nr; i++)
 838                        string_list_append(remote->name, list)->util = (void *)remote->url[i];
 839        } else
 840                string_list_append(remote->name, list)->util = NULL;
 841
 842        return 0;
 843}
 844
 845static int show_all(void)
 846{
 847        struct string_list list = { NULL, 0, 0 };
 848        int result = for_each_remote(get_one_entry, &list);
 849
 850        if (!result) {
 851                int i;
 852
 853                sort_string_list(&list);
 854                for (i = 0; i < list.nr; i++) {
 855                        struct string_list_item *item = list.items + i;
 856                        if (verbose)
 857                                printf("%s\t%s\n", item->string,
 858                                        item->util ? (const char *)item->util : "");
 859                        else {
 860                                if (i && !strcmp((item - 1)->string, item->string))
 861                                        continue;
 862                                printf("%s\n", item->string);
 863                        }
 864                }
 865        }
 866        return result;
 867}
 868
 869int cmd_remote(int argc, const char **argv, const char *prefix)
 870{
 871        struct option options[] = {
 872                OPT__VERBOSE(&verbose),
 873                OPT_END()
 874        };
 875        int result;
 876
 877        argc = parse_options(argc, argv, options, builtin_remote_usage,
 878                PARSE_OPT_STOP_AT_NON_OPTION);
 879
 880        if (argc < 1)
 881                result = show_all();
 882        else if (!strcmp(argv[0], "add"))
 883                result = add(argc, argv);
 884        else if (!strcmp(argv[0], "rename"))
 885                result = mv(argc, argv);
 886        else if (!strcmp(argv[0], "rm"))
 887                result = rm(argc, argv);
 888        else if (!strcmp(argv[0], "show"))
 889                result = show(argc, argv);
 890        else if (!strcmp(argv[0], "prune"))
 891                result = prune(argc, argv);
 892        else if (!strcmp(argv[0], "update"))
 893                result = update(argc, argv);
 894        else {
 895                error("Unknown subcommand: %s", argv[0]);
 896                usage_with_options(builtin_remote_usage, options);
 897        }
 898
 899        return result ? 1 : 0;
 900}