46946b010a17939cbf732af962a7dba062e65700
   1#include "builtin.h"
   2#include "cache.h"
   3#include "parse-options.h"
   4#include "quote.h"
   5#include "pathspec.h"
   6#include "dir.h"
   7#include "utf8.h"
   8#include "submodule.h"
   9#include "submodule-config.h"
  10#include "string-list.h"
  11#include "run-command.h"
  12#include "remote.h"
  13#include "refs.h"
  14#include "connect.h"
  15
  16static char *get_default_remote(void)
  17{
  18        char *dest = NULL, *ret;
  19        unsigned char sha1[20];
  20        struct strbuf sb = STRBUF_INIT;
  21        const char *refname = resolve_ref_unsafe("HEAD", 0, sha1, NULL);
  22
  23        if (!refname)
  24                die(_("No such ref: %s"), "HEAD");
  25
  26        /* detached HEAD */
  27        if (!strcmp(refname, "HEAD"))
  28                return xstrdup("origin");
  29
  30        if (!skip_prefix(refname, "refs/heads/", &refname))
  31                die(_("Expecting a full ref name, got %s"), refname);
  32
  33        strbuf_addf(&sb, "branch.%s.remote", refname);
  34        if (git_config_get_string(sb.buf, &dest))
  35                ret = xstrdup("origin");
  36        else
  37                ret = dest;
  38
  39        strbuf_release(&sb);
  40        return ret;
  41}
  42
  43static int starts_with_dot_slash(const char *str)
  44{
  45        return str[0] == '.' && is_dir_sep(str[1]);
  46}
  47
  48static int starts_with_dot_dot_slash(const char *str)
  49{
  50        return str[0] == '.' && str[1] == '.' && is_dir_sep(str[2]);
  51}
  52
  53/*
  54 * Returns 1 if it was the last chop before ':'.
  55 */
  56static int chop_last_dir(char **remoteurl, int is_relative)
  57{
  58        char *rfind = find_last_dir_sep(*remoteurl);
  59        if (rfind) {
  60                *rfind = '\0';
  61                return 0;
  62        }
  63
  64        rfind = strrchr(*remoteurl, ':');
  65        if (rfind) {
  66                *rfind = '\0';
  67                return 1;
  68        }
  69
  70        if (is_relative || !strcmp(".", *remoteurl))
  71                die(_("cannot strip one component off url '%s'"),
  72                        *remoteurl);
  73
  74        free(*remoteurl);
  75        *remoteurl = xstrdup(".");
  76        return 0;
  77}
  78
  79/*
  80 * The `url` argument is the URL that navigates to the submodule origin
  81 * repo. When relative, this URL is relative to the superproject origin
  82 * URL repo. The `up_path` argument, if specified, is the relative
  83 * path that navigates from the submodule working tree to the superproject
  84 * working tree. Returns the origin URL of the submodule.
  85 *
  86 * Return either an absolute URL or filesystem path (if the superproject
  87 * origin URL is an absolute URL or filesystem path, respectively) or a
  88 * relative file system path (if the superproject origin URL is a relative
  89 * file system path).
  90 *
  91 * When the output is a relative file system path, the path is either
  92 * relative to the submodule working tree, if up_path is specified, or to
  93 * the superproject working tree otherwise.
  94 *
  95 * NEEDSWORK: This works incorrectly on the domain and protocol part.
  96 * remote_url      url              outcome          expectation
  97 * http://a.com/b  ../c             http://a.com/c   as is
  98 * http://a.com/b  ../../c          http://c         error out
  99 * http://a.com/b  ../../../c       http:/c          error out
 100 * http://a.com/b  ../../../../c    http:c           error out
 101 * http://a.com/b  ../../../../../c    .:c           error out
 102 * NEEDSWORK: Given how chop_last_dir() works, this function is broken
 103 * when a local part has a colon in its path component, too.
 104 */
 105static char *relative_url(const char *remote_url,
 106                                const char *url,
 107                                const char *up_path)
 108{
 109        int is_relative = 0;
 110        int colonsep = 0;
 111        char *out;
 112        char *remoteurl = xstrdup(remote_url);
 113        struct strbuf sb = STRBUF_INIT;
 114        size_t len = strlen(remoteurl);
 115
 116        if (is_dir_sep(remoteurl[len]))
 117                remoteurl[len] = '\0';
 118
 119        if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
 120                is_relative = 0;
 121        else {
 122                is_relative = 1;
 123                /*
 124                 * Prepend a './' to ensure all relative
 125                 * remoteurls start with './' or '../'
 126                 */
 127                if (!starts_with_dot_slash(remoteurl) &&
 128                    !starts_with_dot_dot_slash(remoteurl)) {
 129                        strbuf_reset(&sb);
 130                        strbuf_addf(&sb, "./%s", remoteurl);
 131                        free(remoteurl);
 132                        remoteurl = strbuf_detach(&sb, NULL);
 133                }
 134        }
 135        /*
 136         * When the url starts with '../', remove that and the
 137         * last directory in remoteurl.
 138         */
 139        while (url) {
 140                if (starts_with_dot_dot_slash(url)) {
 141                        url += 3;
 142                        colonsep |= chop_last_dir(&remoteurl, is_relative);
 143                } else if (starts_with_dot_slash(url))
 144                        url += 2;
 145                else
 146                        break;
 147        }
 148        strbuf_reset(&sb);
 149        strbuf_addf(&sb, "%s%s%s", remoteurl, colonsep ? ":" : "/", url);
 150        free(remoteurl);
 151
 152        if (starts_with_dot_slash(sb.buf))
 153                out = xstrdup(sb.buf + 2);
 154        else
 155                out = xstrdup(sb.buf);
 156        strbuf_reset(&sb);
 157
 158        if (!up_path || !is_relative)
 159                return out;
 160
 161        strbuf_addf(&sb, "%s%s", up_path, out);
 162        free(out);
 163        return strbuf_detach(&sb, NULL);
 164}
 165
 166static int resolve_relative_url(int argc, const char **argv, const char *prefix)
 167{
 168        char *remoteurl = NULL;
 169        char *remote = get_default_remote();
 170        const char *up_path = NULL;
 171        char *res;
 172        const char *url;
 173        struct strbuf sb = STRBUF_INIT;
 174
 175        if (argc != 2 && argc != 3)
 176                die("resolve-relative-url only accepts one or two arguments");
 177
 178        url = argv[1];
 179        strbuf_addf(&sb, "remote.%s.url", remote);
 180        free(remote);
 181
 182        if (git_config_get_string(sb.buf, &remoteurl))
 183                /* the repository is its own authoritative upstream */
 184                remoteurl = xgetcwd();
 185
 186        if (argc == 3)
 187                up_path = argv[2];
 188
 189        res = relative_url(remoteurl, url, up_path);
 190        puts(res);
 191        free(res);
 192        free(remoteurl);
 193        return 0;
 194}
 195
 196static int resolve_relative_url_test(int argc, const char **argv, const char *prefix)
 197{
 198        char *remoteurl, *res;
 199        const char *up_path, *url;
 200
 201        if (argc != 4)
 202                die("resolve-relative-url-test only accepts three arguments: <up_path> <remoteurl> <url>");
 203
 204        up_path = argv[1];
 205        remoteurl = xstrdup(argv[2]);
 206        url = argv[3];
 207
 208        if (!strcmp(up_path, "(null)"))
 209                up_path = NULL;
 210
 211        res = relative_url(remoteurl, url, up_path);
 212        puts(res);
 213        free(res);
 214        free(remoteurl);
 215        return 0;
 216}
 217
 218struct module_list {
 219        const struct cache_entry **entries;
 220        int alloc, nr;
 221};
 222#define MODULE_LIST_INIT { NULL, 0, 0 }
 223
 224static int module_list_compute(int argc, const char **argv,
 225                               const char *prefix,
 226                               struct pathspec *pathspec,
 227                               struct module_list *list)
 228{
 229        int i, result = 0;
 230        char *ps_matched = NULL;
 231        parse_pathspec(pathspec, 0,
 232                       PATHSPEC_PREFER_FULL |
 233                       PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
 234                       prefix, argv);
 235
 236        if (pathspec->nr)
 237                ps_matched = xcalloc(pathspec->nr, 1);
 238
 239        if (read_cache() < 0)
 240                die(_("index file corrupt"));
 241
 242        for (i = 0; i < active_nr; i++) {
 243                const struct cache_entry *ce = active_cache[i];
 244
 245                if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
 246                                    0, ps_matched, 1) ||
 247                    !S_ISGITLINK(ce->ce_mode))
 248                        continue;
 249
 250                ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
 251                list->entries[list->nr++] = ce;
 252                while (i + 1 < active_nr &&
 253                       !strcmp(ce->name, active_cache[i + 1]->name))
 254                        /*
 255                         * Skip entries with the same name in different stages
 256                         * to make sure an entry is returned only once.
 257                         */
 258                        i++;
 259        }
 260
 261        if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
 262                result = -1;
 263
 264        free(ps_matched);
 265
 266        return result;
 267}
 268
 269static int module_list(int argc, const char **argv, const char *prefix)
 270{
 271        int i;
 272        struct pathspec pathspec;
 273        struct module_list list = MODULE_LIST_INIT;
 274
 275        struct option module_list_options[] = {
 276                OPT_STRING(0, "prefix", &prefix,
 277                           N_("path"),
 278                           N_("alternative anchor for relative paths")),
 279                OPT_END()
 280        };
 281
 282        const char *const git_submodule_helper_usage[] = {
 283                N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
 284                NULL
 285        };
 286
 287        argc = parse_options(argc, argv, prefix, module_list_options,
 288                             git_submodule_helper_usage, 0);
 289
 290        if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0) {
 291                printf("#unmatched\n");
 292                return 1;
 293        }
 294
 295        for (i = 0; i < list.nr; i++) {
 296                const struct cache_entry *ce = list.entries[i];
 297
 298                if (ce_stage(ce))
 299                        printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
 300                else
 301                        printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));
 302
 303                utf8_fprintf(stdout, "%s\n", ce->name);
 304        }
 305        return 0;
 306}
 307
 308static int module_name(int argc, const char **argv, const char *prefix)
 309{
 310        const struct submodule *sub;
 311
 312        if (argc != 2)
 313                usage(_("git submodule--helper name <path>"));
 314
 315        gitmodules_config();
 316        sub = submodule_from_path(null_sha1, argv[1]);
 317
 318        if (!sub)
 319                die(_("no submodule mapping found in .gitmodules for path '%s'"),
 320                    argv[1]);
 321
 322        printf("%s\n", sub->name);
 323
 324        return 0;
 325}
 326static int clone_submodule(const char *path, const char *gitdir, const char *url,
 327                           const char *depth, const char *reference, int quiet)
 328{
 329        struct child_process cp;
 330        child_process_init(&cp);
 331
 332        argv_array_push(&cp.args, "clone");
 333        argv_array_push(&cp.args, "--no-checkout");
 334        if (quiet)
 335                argv_array_push(&cp.args, "--quiet");
 336        if (depth && *depth)
 337                argv_array_pushl(&cp.args, "--depth", depth, NULL);
 338        if (reference && *reference)
 339                argv_array_pushl(&cp.args, "--reference", reference, NULL);
 340        if (gitdir && *gitdir)
 341                argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
 342
 343        argv_array_push(&cp.args, url);
 344        argv_array_push(&cp.args, path);
 345
 346        cp.git_cmd = 1;
 347        cp.env = local_repo_env;
 348        cp.no_stdin = 1;
 349
 350        return run_command(&cp);
 351}
 352
 353static int module_clone(int argc, const char **argv, const char *prefix)
 354{
 355        const char *name = NULL, *url = NULL;
 356        const char *reference = NULL, *depth = NULL;
 357        int quiet = 0;
 358        FILE *submodule_dot_git;
 359        char *p, *path = NULL, *sm_gitdir;
 360        struct strbuf rel_path = STRBUF_INIT;
 361        struct strbuf sb = STRBUF_INIT;
 362
 363        struct option module_clone_options[] = {
 364                OPT_STRING(0, "prefix", &prefix,
 365                           N_("path"),
 366                           N_("alternative anchor for relative paths")),
 367                OPT_STRING(0, "path", &path,
 368                           N_("path"),
 369                           N_("where the new submodule will be cloned to")),
 370                OPT_STRING(0, "name", &name,
 371                           N_("string"),
 372                           N_("name of the new submodule")),
 373                OPT_STRING(0, "url", &url,
 374                           N_("string"),
 375                           N_("url where to clone the submodule from")),
 376                OPT_STRING(0, "reference", &reference,
 377                           N_("string"),
 378                           N_("reference repository")),
 379                OPT_STRING(0, "depth", &depth,
 380                           N_("string"),
 381                           N_("depth for shallow clones")),
 382                OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
 383                OPT_END()
 384        };
 385
 386        const char *const git_submodule_helper_usage[] = {
 387                N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
 388                   "[--reference <repository>] [--name <name>] [--url <url>]"
 389                   "[--depth <depth>] [--] [<path>...]"),
 390                NULL
 391        };
 392
 393        argc = parse_options(argc, argv, prefix, module_clone_options,
 394                             git_submodule_helper_usage, 0);
 395
 396        if (!path || !*path)
 397                die(_("submodule--helper: unspecified or empty --path"));
 398
 399        strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
 400        sm_gitdir = xstrdup(absolute_path(sb.buf));
 401        strbuf_reset(&sb);
 402
 403        if (!is_absolute_path(path)) {
 404                strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
 405                path = strbuf_detach(&sb, NULL);
 406        } else
 407                path = xstrdup(path);
 408
 409        if (!file_exists(sm_gitdir)) {
 410                if (safe_create_leading_directories_const(sm_gitdir) < 0)
 411                        die(_("could not create directory '%s'"), sm_gitdir);
 412                if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
 413                        die(_("clone of '%s' into submodule path '%s' failed"),
 414                            url, path);
 415        } else {
 416                if (safe_create_leading_directories_const(path) < 0)
 417                        die(_("could not create directory '%s'"), path);
 418                strbuf_addf(&sb, "%s/index", sm_gitdir);
 419                unlink_or_warn(sb.buf);
 420                strbuf_reset(&sb);
 421        }
 422
 423        /* Write a .git file in the submodule to redirect to the superproject. */
 424        strbuf_addf(&sb, "%s/.git", path);
 425        if (safe_create_leading_directories_const(sb.buf) < 0)
 426                die(_("could not create leading directories of '%s'"), sb.buf);
 427        submodule_dot_git = fopen(sb.buf, "w");
 428        if (!submodule_dot_git)
 429                die_errno(_("cannot open file '%s'"), sb.buf);
 430
 431        fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
 432                       relative_path(sm_gitdir, path, &rel_path));
 433        if (fclose(submodule_dot_git))
 434                die(_("could not close file %s"), sb.buf);
 435        strbuf_reset(&sb);
 436        strbuf_reset(&rel_path);
 437
 438        /* Redirect the worktree of the submodule in the superproject's config */
 439        p = git_pathdup_submodule(path, "config");
 440        if (!p)
 441                die(_("could not get submodule directory for '%s'"), path);
 442        git_config_set_in_file(p, "core.worktree",
 443                               relative_path(path, sm_gitdir, &rel_path));
 444        strbuf_release(&sb);
 445        strbuf_release(&rel_path);
 446        free(sm_gitdir);
 447        free(path);
 448        free(p);
 449        return 0;
 450}
 451
 452struct submodule_update_clone {
 453        /* index into 'list', the list of submodules to look into for cloning */
 454        int current;
 455        struct module_list list;
 456        unsigned warn_if_uninitialized : 1;
 457
 458        /* update parameter passed via commandline */
 459        struct submodule_update_strategy update;
 460
 461        /* configuration parameters which are passed on to the children */
 462        int quiet;
 463        const char *reference;
 464        const char *depth;
 465        const char *recursive_prefix;
 466        const char *prefix;
 467
 468        /* Machine-readable status lines to be consumed by git-submodule.sh */
 469        struct string_list projectlines;
 470
 471        /* If we want to stop as fast as possible and return an error */
 472        unsigned quickstop : 1;
 473};
 474#define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
 475        SUBMODULE_UPDATE_STRATEGY_INIT, 0, NULL, NULL, NULL, NULL, \
 476        STRING_LIST_INIT_DUP, 0}
 477
 478/**
 479 * Determine whether 'ce' needs to be cloned. If so, prepare the 'child' to
 480 * run the clone. Returns 1 if 'ce' needs to be cloned, 0 otherwise.
 481 */
 482static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
 483                                           struct child_process *child,
 484                                           struct submodule_update_clone *suc,
 485                                           struct strbuf *out)
 486{
 487        const struct submodule *sub = NULL;
 488        struct strbuf displaypath_sb = STRBUF_INIT;
 489        struct strbuf sb = STRBUF_INIT;
 490        const char *displaypath = NULL;
 491        char *url = NULL;
 492        int needs_cloning = 0;
 493
 494        if (ce_stage(ce)) {
 495                if (suc->recursive_prefix)
 496                        strbuf_addf(&sb, "%s/%s", suc->recursive_prefix, ce->name);
 497                else
 498                        strbuf_addf(&sb, "%s", ce->name);
 499                strbuf_addf(out, _("Skipping unmerged submodule %s"), sb.buf);
 500                strbuf_addch(out, '\n');
 501                goto cleanup;
 502        }
 503
 504        sub = submodule_from_path(null_sha1, ce->name);
 505
 506        if (suc->recursive_prefix)
 507                displaypath = relative_path(suc->recursive_prefix,
 508                                            ce->name, &displaypath_sb);
 509        else
 510                displaypath = ce->name;
 511
 512        if (suc->update.type == SM_UPDATE_NONE
 513            || (suc->update.type == SM_UPDATE_UNSPECIFIED
 514                && sub->update_strategy.type == SM_UPDATE_NONE)) {
 515                strbuf_addf(out, _("Skipping submodule '%s'"), displaypath);
 516                strbuf_addch(out, '\n');
 517                goto cleanup;
 518        }
 519
 520        /*
 521         * Looking up the url in .git/config.
 522         * We must not fall back to .gitmodules as we only want
 523         * to process configured submodules.
 524         */
 525        strbuf_reset(&sb);
 526        strbuf_addf(&sb, "submodule.%s.url", sub->name);
 527        git_config_get_string(sb.buf, &url);
 528        if (!url) {
 529                /*
 530                 * Only mention uninitialized submodules when their
 531                 * path have been specified
 532                 */
 533                if (suc->warn_if_uninitialized) {
 534                        strbuf_addf(out,
 535                                _("Submodule path '%s' not initialized"),
 536                                displaypath);
 537                        strbuf_addch(out, '\n');
 538                        strbuf_addstr(out,
 539                                _("Maybe you want to use 'update --init'?"));
 540                        strbuf_addch(out, '\n');
 541                }
 542                goto cleanup;
 543        }
 544
 545        strbuf_reset(&sb);
 546        strbuf_addf(&sb, "%s/.git", ce->name);
 547        needs_cloning = !file_exists(sb.buf);
 548
 549        strbuf_reset(&sb);
 550        strbuf_addf(&sb, "%06o %s %d %d\t%s\n", ce->ce_mode,
 551                        sha1_to_hex(ce->sha1), ce_stage(ce),
 552                        needs_cloning, ce->name);
 553        string_list_append(&suc->projectlines, sb.buf);
 554
 555        if (!needs_cloning)
 556                goto cleanup;
 557
 558        child->git_cmd = 1;
 559        child->no_stdin = 1;
 560        child->stdout_to_stderr = 1;
 561        child->err = -1;
 562        argv_array_push(&child->args, "submodule--helper");
 563        argv_array_push(&child->args, "clone");
 564        if (suc->quiet)
 565                argv_array_push(&child->args, "--quiet");
 566        if (suc->prefix)
 567                argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
 568        argv_array_pushl(&child->args, "--path", sub->path, NULL);
 569        argv_array_pushl(&child->args, "--name", sub->name, NULL);
 570        argv_array_pushl(&child->args, "--url", url, NULL);
 571        if (suc->reference)
 572                argv_array_push(&child->args, suc->reference);
 573        if (suc->depth)
 574                argv_array_push(&child->args, suc->depth);
 575
 576cleanup:
 577        free(url);
 578        strbuf_reset(&displaypath_sb);
 579        strbuf_reset(&sb);
 580
 581        return needs_cloning;
 582}
 583
 584static int update_clone_get_next_task(struct child_process *child,
 585                                      struct strbuf *err,
 586                                      void *suc_cb,
 587                                      void **void_task_cb)
 588{
 589        struct submodule_update_clone *suc = suc_cb;
 590
 591        for (; suc->current < suc->list.nr; suc->current++) {
 592                const struct cache_entry *ce = suc->list.entries[suc->current];
 593                if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
 594                        suc->current++;
 595                        return 1;
 596                }
 597        }
 598        return 0;
 599}
 600
 601static int update_clone_start_failure(struct strbuf *err,
 602                                      void *suc_cb,
 603                                      void *void_task_cb)
 604{
 605        struct submodule_update_clone *suc = suc_cb;
 606        suc->quickstop = 1;
 607        return 1;
 608}
 609
 610static int update_clone_task_finished(int result,
 611                                      struct strbuf *err,
 612                                      void *suc_cb,
 613                                      void *void_task_cb)
 614{
 615        struct submodule_update_clone *suc = suc_cb;
 616
 617        if (!result)
 618                return 0;
 619
 620        suc->quickstop = 1;
 621        return 1;
 622}
 623
 624static int update_clone(int argc, const char **argv, const char *prefix)
 625{
 626        const char *update = NULL;
 627        int max_jobs = -1;
 628        struct string_list_item *item;
 629        struct pathspec pathspec;
 630        struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
 631
 632        struct option module_update_clone_options[] = {
 633                OPT_STRING(0, "prefix", &prefix,
 634                           N_("path"),
 635                           N_("path into the working tree")),
 636                OPT_STRING(0, "recursive-prefix", &suc.recursive_prefix,
 637                           N_("path"),
 638                           N_("path into the working tree, across nested "
 639                              "submodule boundaries")),
 640                OPT_STRING(0, "update", &update,
 641                           N_("string"),
 642                           N_("rebase, merge, checkout or none")),
 643                OPT_STRING(0, "reference", &suc.reference, N_("repo"),
 644                           N_("reference repository")),
 645                OPT_STRING(0, "depth", &suc.depth, "<depth>",
 646                           N_("Create a shallow clone truncated to the "
 647                              "specified number of revisions")),
 648                OPT_INTEGER('j', "jobs", &max_jobs,
 649                            N_("parallel jobs")),
 650                OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
 651                OPT_END()
 652        };
 653
 654        const char *const git_submodule_helper_usage[] = {
 655                N_("git submodule--helper update_clone [--prefix=<path>] [<path>...]"),
 656                NULL
 657        };
 658        suc.prefix = prefix;
 659
 660        argc = parse_options(argc, argv, prefix, module_update_clone_options,
 661                             git_submodule_helper_usage, 0);
 662
 663        if (update)
 664                if (parse_submodule_update_strategy(update, &suc.update) < 0)
 665                        die(_("bad value for update parameter"));
 666
 667        if (module_list_compute(argc, argv, prefix, &pathspec, &suc.list) < 0)
 668                return 1;
 669
 670        if (pathspec.nr)
 671                suc.warn_if_uninitialized = 1;
 672
 673        /* Overlay the parsed .gitmodules file with .git/config */
 674        gitmodules_config();
 675        git_config(submodule_config, NULL);
 676
 677        if (max_jobs < 0)
 678                max_jobs = parallel_submodules();
 679
 680        run_processes_parallel(max_jobs,
 681                               update_clone_get_next_task,
 682                               update_clone_start_failure,
 683                               update_clone_task_finished,
 684                               &suc);
 685
 686        /*
 687         * We saved the output and put it out all at once now.
 688         * That means:
 689         * - the listener does not have to interleave their (checkout)
 690         *   work with our fetching.  The writes involved in a
 691         *   checkout involve more straightforward sequential I/O.
 692         * - the listener can avoid doing any work if fetching failed.
 693         */
 694        if (suc.quickstop)
 695                return 1;
 696
 697        for_each_string_list_item(item, &suc.projectlines)
 698                utf8_fprintf(stdout, "%s", item->string);
 699
 700        return 0;
 701}
 702
 703struct cmd_struct {
 704        const char *cmd;
 705        int (*fn)(int, const char **, const char *);
 706};
 707
 708static struct cmd_struct commands[] = {
 709        {"list", module_list},
 710        {"name", module_name},
 711        {"clone", module_clone},
 712        {"update-clone", update_clone},
 713        {"resolve-relative-url", resolve_relative_url},
 714        {"resolve-relative-url-test", resolve_relative_url_test},
 715};
 716
 717int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
 718{
 719        int i;
 720        if (argc < 2)
 721                die(_("submodule--helper subcommand must be "
 722                      "called with a subcommand"));
 723
 724        for (i = 0; i < ARRAY_SIZE(commands); i++)
 725                if (!strcmp(argv[1], commands[i].cmd))
 726                        return commands[i].fn(argc - 1, argv + 1, prefix);
 727
 728        die(_("'%s' is not a valid submodule--helper "
 729              "subcommand"), argv[1]);
 730}