builtin/sparse-checkout.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "dir.h"
   4 #include "parse-options.h"
   5 #include "pathspec.h"
   6 #include "repository.h"
   7 #include "run-command.h"
   8 #include "strbuf.h"
   9 #include "string-list.h"
  10 #include "cache.h"
  11 #include "cache-tree.h"
  12 #include "lockfile.h"
  13 #include "resolve-undo.h"
  14 #include "unpack-trees.h"
  15 #include "wt-status.h"
  16 #include "quote.h"
  17 #include "sparse-index.h"
  18
  19 static const char *empty_base = "";
  20
  21 static char const * const builtin_sparse_checkout_usage[] = {
  22         N_("git sparse-checkout (init|list|set|add|reapply|disable) <options>"),
  23         NULL
  24 };
  25
  26 static void write_patterns_to_file(FILE *fp, struct pattern_list *pl)
  27 {
  28         int i;
  29
  30         for (i = 0; i < pl->nr; i++) {
  31                 struct path_pattern *p = pl->patterns[i];
  32
  33                 if (p->flags & PATTERN_FLAG_NEGATIVE)
  34                         fprintf(fp, "!");
  35
  36                 fprintf(fp, "%s", p->pattern);
  37
  38                 if (p->flags & PATTERN_FLAG_MUSTBEDIR)
  39                         fprintf(fp, "/");
  40
  41                 fprintf(fp, "\n");
  42         }
  43 }
  44
  45 static char const * const builtin_sparse_checkout_list_usage[] = {
  46         N_("git sparse-checkout list"),
  47         NULL
  48 };
  49
  50 static int sparse_checkout_list(int argc, const char **argv)
  51 {
  52         static struct option builtin_sparse_checkout_list_options[] = {
  53                 OPT_END(),
  54         };
  55         struct pattern_list pl;
  56         char *sparse_filename;
  57         int res;
  58
  59         argc = parse_options(argc, argv, NULL,
  60                              builtin_sparse_checkout_list_options,
  61                              builtin_sparse_checkout_list_usage, 0);
  62
  63         memset(&pl, 0, sizeof(pl));
  64
  65         pl.use_cone_patterns = core_sparse_checkout_cone;
  66
  67         sparse_filename = get_sparse_checkout_filename();
  68         res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL, 0);
  69         free(sparse_filename);
  70
  71         if (res < 0) {
  72                 warning(_("this worktree is not sparse (sparse-checkout file may not exist)"));
  73                 return 0;
  74         }
  75
  76         if (pl.use_cone_patterns) {
  77                 int i;
  78                 struct pattern_entry *pe;
  79                 struct hashmap_iter iter;
  80                 struct string_list sl = STRING_LIST_INIT_DUP;
  81
  82                 hashmap_for_each_entry(&pl.recursive_hashmap, &iter, pe, ent) {
  83                         /* pe->pattern starts with "/", skip it */
  84                         string_list_insert(&sl, pe->pattern + 1);
  85                 }
  86
  87                 string_list_sort(&sl);
  88
  89                 for (i = 0; i < sl.nr; i++) {
  90                         quote_c_style(sl.items[i].string, NULL, stdout, 0);
  91                         printf("\n");
  92                 }
  93
  94                 return 0;
  95         }
  96
  97         write_patterns_to_file(stdout, &pl);
  98         clear_pattern_list(&pl);
  99
 100         return 0;
 101 }
 102
 103 static void clean_tracked_sparse_directories(struct repository *r)
 104 {
 105         int i, was_full = 0;
 106         struct strbuf path = STRBUF_INIT;
 107         size_t pathlen;
 108         struct string_list_item *item;
 109         struct string_list sparse_dirs = STRING_LIST_INIT_DUP;
 110
 111         /*
 112          * If we are not using cone mode patterns, then we cannot
 113          * delete directories outside of the sparse cone.
 114          */
 115         if (!r || !r->index || !r->worktree)
 116                 return;
 117         if (init_sparse_checkout_patterns(r->index) ||
 118             !r->index->sparse_checkout_patterns->use_cone_patterns)
 119                 return;
 120
 121         /*
 122          * Use the sparse index as a data structure to assist finding
 123          * directories that are safe to delete. This conversion to a
 124          * sparse index will not delete directories that contain
 125          * conflicted entries or submodules.
 126          */
 127         if (!r->index->sparse_index) {
 128                 /*
 129                  * If something, such as a merge conflict or other concern,
 130                  * prevents us from converting to a sparse index, then do
 131                  * not try deleting files.
 132                  */
 133                 if (convert_to_sparse(r->index, SPARSE_INDEX_MEMORY_ONLY))
 134                         return;
 135                 was_full = 1;
 136         }
 137
 138         strbuf_addstr(&path, r->worktree);
 139         strbuf_complete(&path, '/');
 140         pathlen = path.len;
 141
 142         /*
 143          * Collect directories that have gone out of scope but also
 144          * exist on disk, so there is some work to be done. We need to
 145          * store the entries in a list before exploring, since that might
 146          * expand the sparse-index again.
 147          */
 148         for (i = 0; i < r->index->cache_nr; i++) {
 149                 struct cache_entry *ce = r->index->cache[i];
 150
 151                 if (S_ISSPARSEDIR(ce->ce_mode) &&
 152                     repo_file_exists(r, ce->name))
 153                         string_list_append(&sparse_dirs, ce->name);
 154         }
 155
 156         for_each_string_list_item(item, &sparse_dirs) {
 157                 struct dir_struct dir = DIR_INIT;
 158                 struct pathspec p = { 0 };
 159                 struct strvec s = STRVEC_INIT;
 160
 161                 strbuf_setlen(&path, pathlen);
 162                 strbuf_addstr(&path, item->string);
 163
 164                 dir.flags |= DIR_SHOW_IGNORED_TOO;
 165
 166                 setup_standard_excludes(&dir);
 167                 strvec_push(&s, path.buf);
 168
 169                 parse_pathspec(&p, PATHSPEC_GLOB, 0, NULL, s.v);
 170                 fill_directory(&dir, r->index, &p);
 171
 172                 if (dir.nr) {
 173                         warning(_("directory '%s' contains untracked files,"
 174                                   " but is not in the sparse-checkout cone"),
 175                                 item->string);
 176                 } else if (remove_dir_recursively(&path, 0)) {
 177                         /*
 178                          * Removal is "best effort". If something blocks
 179                          * the deletion, then continue with a warning.
 180                          */
 181                         warning(_("failed to remove directory '%s'"),
 182                                 item->string);
 183                 }
 184
 185                 dir_clear(&dir);
 186         }
 187
 188         string_list_clear(&sparse_dirs, 0);
 189         strbuf_release(&path);
 190
 191         if (was_full)
 192                 ensure_full_index(r->index);
 193 }
 194
 195 static int update_working_directory(struct pattern_list *pl)
 196 {
 197         enum update_sparsity_result result;
 198         struct unpack_trees_options o;
 199         struct lock_file lock_file = LOCK_INIT;
 200         struct repository *r = the_repository;
 201
 202         /* If no branch has been checked out, there are no updates to make. */
 203         if (is_index_unborn(r->index))
 204                 return UPDATE_SPARSITY_SUCCESS;
 205
 206         r->index->sparse_checkout_patterns = pl;
 207
 208         memset(&o, 0, sizeof(o));
 209         o.verbose_update = isatty(2);
 210         o.update = 1;
 211         o.head_idx = -1;
 212         o.src_index = r->index;
 213         o.dst_index = r->index;
 214         o.skip_sparse_checkout = 0;
 215         o.pl = pl;
 216
 217         setup_work_tree();
 218
 219         repo_hold_locked_index(r, &lock_file, LOCK_DIE_ON_ERROR);
 220
 221         setup_unpack_trees_porcelain(&o, "sparse-checkout");
 222         result = update_sparsity(&o);
 223         clear_unpack_trees_porcelain(&o);
 224
 225         if (result == UPDATE_SPARSITY_WARNINGS)
 226                 /*
 227                  * We don't do any special handling of warnings from untracked
 228                  * files in the way or dirty entries that can't be removed.
 229                  */
 230                 result = UPDATE_SPARSITY_SUCCESS;
 231         if (result == UPDATE_SPARSITY_SUCCESS)
 232                 write_locked_index(r->index, &lock_file, COMMIT_LOCK);
 233         else
 234                 rollback_lock_file(&lock_file);
 235
 236         clean_tracked_sparse_directories(r);
 237
 238         r->index->sparse_checkout_patterns = NULL;
 239         return result;
 240 }
 241
 242 static char *escaped_pattern(char *pattern)
 243 {
 244         char *p = pattern;
 245         struct strbuf final = STRBUF_INIT;
 246
 247         while (*p) {
 248                 if (is_glob_special(*p))
 249                         strbuf_addch(&final, '\\');
 250
 251                 strbuf_addch(&final, *p);
 252                 p++;
 253         }
 254
 255         return strbuf_detach(&final, NULL);
 256 }
 257
 258 static void write_cone_to_file(FILE *fp, struct pattern_list *pl)
 259 {
 260         int i;
 261         struct pattern_entry *pe;
 262         struct hashmap_iter iter;
 263         struct string_list sl = STRING_LIST_INIT_DUP;
 264         struct strbuf parent_pattern = STRBUF_INIT;
 265
 266         hashmap_for_each_entry(&pl->parent_hashmap, &iter, pe, ent) {
 267                 if (hashmap_get_entry(&pl->recursive_hashmap, pe, ent, NULL))
 268                         continue;
 269
 270                 if (!hashmap_contains_parent(&pl->recursive_hashmap,
 271                                              pe->pattern,
 272                                              &parent_pattern))
 273                         string_list_insert(&sl, pe->pattern);
 274         }
 275
 276         string_list_sort(&sl);
 277         string_list_remove_duplicates(&sl, 0);
 278
 279         fprintf(fp, "/*\n!/*/\n");
 280
 281         for (i = 0; i < sl.nr; i++) {
 282                 char *pattern = escaped_pattern(sl.items[i].string);
 283
 284                 if (strlen(pattern))
 285                         fprintf(fp, "%s/\n!%s/*/\n", pattern, pattern);
 286                 free(pattern);
 287         }
 288
 289         string_list_clear(&sl, 0);
 290
 291         hashmap_for_each_entry(&pl->recursive_hashmap, &iter, pe, ent) {
 292                 if (!hashmap_contains_parent(&pl->recursive_hashmap,
 293                                              pe->pattern,
 294                                              &parent_pattern))
 295                         string_list_insert(&sl, pe->pattern);
 296         }
 297
 298         strbuf_release(&parent_pattern);
 299
 300         string_list_sort(&sl);
 301         string_list_remove_duplicates(&sl, 0);
 302
 303         for (i = 0; i < sl.nr; i++) {
 304                 char *pattern = escaped_pattern(sl.items[i].string);
 305                 fprintf(fp, "%s/\n", pattern);
 306                 free(pattern);
 307         }
 308 }
 309
 310 static int write_patterns_and_update(struct pattern_list *pl)
 311 {
 312         char *sparse_filename;
 313         FILE *fp;
 314         int fd;
 315         struct lock_file lk = LOCK_INIT;
 316         int result;
 317
 318         sparse_filename = get_sparse_checkout_filename();
 319
 320         if (safe_create_leading_directories(sparse_filename))
 321                 die(_("failed to create directory for sparse-checkout file"));
 322
 323         fd = hold_lock_file_for_update(&lk, sparse_filename,
 324                                       LOCK_DIE_ON_ERROR);
 325
 326         result = update_working_directory(pl);
 327         if (result) {
 328                 rollback_lock_file(&lk);
 329                 free(sparse_filename);
 330                 clear_pattern_list(pl);
 331                 update_working_directory(NULL);
 332                 return result;
 333         }
 334
 335         fp = xfdopen(fd, "w");
 336
 337         if (core_sparse_checkout_cone)
 338                 write_cone_to_file(fp, pl);
 339         else
 340                 write_patterns_to_file(fp, pl);
 341
 342         fflush(fp);
 343         commit_lock_file(&lk);
 344
 345         free(sparse_filename);
 346         clear_pattern_list(pl);
 347
 348         return 0;
 349 }
 350
 351 enum sparse_checkout_mode {
 352         MODE_NO_PATTERNS = 0,
 353         MODE_ALL_PATTERNS = 1,
 354         MODE_CONE_PATTERNS = 2,
 355 };
 356
 357 static int set_config(enum sparse_checkout_mode mode)
 358 {
 359         const char *config_path;
 360
 361         if (upgrade_repository_format(1) < 0)
 362                 die(_("unable to upgrade repository format to enable worktreeConfig"));
 363         if (git_config_set_gently("extensions.worktreeConfig", "true")) {
 364                 error(_("failed to set extensions.worktreeConfig setting"));
 365                 return 1;
 366         }
 367
 368         config_path = git_path("config.worktree");
 369         git_config_set_in_file_gently(config_path,
 370                                       "core.sparseCheckout",
 371                                       mode ? "true" : NULL);
 372
 373         git_config_set_in_file_gently(config_path,
 374                                       "core.sparseCheckoutCone",
 375                                       mode == MODE_CONE_PATTERNS ? "true" : NULL);
 376
 377         if (mode == MODE_NO_PATTERNS)
 378                 set_sparse_index_config(the_repository, 0);
 379
 380         return 0;
 381 }
 382
 383 static char const * const builtin_sparse_checkout_init_usage[] = {
 384         N_("git sparse-checkout init [--cone] [--[no-]sparse-index]"),
 385         NULL
 386 };
 387
 388 static struct sparse_checkout_init_opts {
 389         int cone_mode;
 390         int sparse_index;
 391 } init_opts;
 392
 393 static int sparse_checkout_init(int argc, const char **argv)
 394 {
 395         struct pattern_list pl;
 396         char *sparse_filename;
 397         int res;
 398         struct object_id oid;
 399         int mode;
 400         struct strbuf pattern = STRBUF_INIT;
 401
 402         static struct option builtin_sparse_checkout_init_options[] = {
 403                 OPT_BOOL(0, "cone", &init_opts.cone_mode,
 404                          N_("initialize the sparse-checkout in cone mode")),
 405                 OPT_BOOL(0, "sparse-index", &init_opts.sparse_index,
 406                          N_("toggle the use of a sparse index")),
 407                 OPT_END(),
 408         };
 409
 410         repo_read_index(the_repository);
 411
 412         init_opts.sparse_index = -1;
 413
 414         argc = parse_options(argc, argv, NULL,
 415                              builtin_sparse_checkout_init_options,
 416                              builtin_sparse_checkout_init_usage, 0);
 417
 418         if (init_opts.cone_mode) {
 419                 mode = MODE_CONE_PATTERNS;
 420                 core_sparse_checkout_cone = 1;
 421         } else
 422                 mode = MODE_ALL_PATTERNS;
 423
 424         if (set_config(mode))
 425                 return 1;
 426
 427         memset(&pl, 0, sizeof(pl));
 428
 429         sparse_filename = get_sparse_checkout_filename();
 430         res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL, 0);
 431
 432         if (init_opts.sparse_index >= 0) {
 433                 if (set_sparse_index_config(the_repository, init_opts.sparse_index) < 0)
 434                         die(_("failed to modify sparse-index config"));
 435
 436                 /* force an index rewrite */
 437                 repo_read_index(the_repository);
 438                 the_repository->index->updated_workdir = 1;
 439         }
 440
 441         core_apply_sparse_checkout = 1;
 442
 443         /* If we already have a sparse-checkout file, use it. */
 444         if (res >= 0) {
 445                 free(sparse_filename);
 446                 return update_working_directory(NULL);
 447         }
 448
 449         if (get_oid("HEAD", &oid)) {
 450                 FILE *fp;
 451
 452                 /* assume we are in a fresh repo, but update the sparse-checkout file */
 453                 fp = xfopen(sparse_filename, "w");
 454                 if (!fp)
 455                         die(_("failed to open '%s'"), sparse_filename);
 456
 457                 free(sparse_filename);
 458                 fprintf(fp, "/*\n!/*/\n");
 459                 fclose(fp);
 460                 return 0;
 461         }
 462
 463         strbuf_addstr(&pattern, "/*");
 464         add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
 465         strbuf_addstr(&pattern, "!/*/");
 466         add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
 467         pl.use_cone_patterns = init_opts.cone_mode;
 468
 469         return write_patterns_and_update(&pl);
 470 }
 471
 472 static void insert_recursive_pattern(struct pattern_list *pl, struct strbuf *path)
 473 {
 474         struct pattern_entry *e = xmalloc(sizeof(*e));
 475         e->patternlen = path->len;
 476         e->pattern = strbuf_detach(path, NULL);
 477         hashmap_entry_init(&e->ent, fspathhash(e->pattern));
 478
 479         hashmap_add(&pl->recursive_hashmap, &e->ent);
 480
 481         while (e->patternlen) {
 482                 char *slash = strrchr(e->pattern, '/');
 483                 char *oldpattern = e->pattern;
 484                 size_t newlen;
 485
 486                 if (slash == e->pattern)
 487                         break;
 488
 489                 newlen = slash - e->pattern;
 490                 e = xmalloc(sizeof(struct pattern_entry));
 491                 e->patternlen = newlen;
 492                 e->pattern = xstrndup(oldpattern, newlen);
 493                 hashmap_entry_init(&e->ent, fspathhash(e->pattern));
 494
 495                 if (!hashmap_get_entry(&pl->parent_hashmap, e, ent, NULL))
 496                         hashmap_add(&pl->parent_hashmap, &e->ent);
 497         }
 498 }
 499
 500 static void strbuf_to_cone_pattern(struct strbuf *line, struct pattern_list *pl)
 501 {
 502         strbuf_trim(line);
 503
 504         strbuf_trim_trailing_dir_sep(line);
 505
 506         if (strbuf_normalize_path(line))
 507                 die(_("could not normalize path %s"), line->buf);
 508
 509         if (!line->len)
 510                 return;
 511
 512         if (line->buf[0] != '/')
 513                 strbuf_insertstr(line, 0, "/");
 514
 515         insert_recursive_pattern(pl, line);
 516 }
 517
 518 static char const * const builtin_sparse_checkout_set_usage[] = {
 519         N_("git sparse-checkout (set|add) (--stdin | <patterns>)"),
 520         NULL
 521 };
 522
 523 static struct sparse_checkout_set_opts {
 524         int use_stdin;
 525 } set_opts;
 526
 527 static void add_patterns_from_input(struct pattern_list *pl,
 528                                     int argc, const char **argv)
 529 {
 530         int i;
 531         if (core_sparse_checkout_cone) {
 532                 struct strbuf line = STRBUF_INIT;
 533
 534                 hashmap_init(&pl->recursive_hashmap, pl_hashmap_cmp, NULL, 0);
 535                 hashmap_init(&pl->parent_hashmap, pl_hashmap_cmp, NULL, 0);
 536                 pl->use_cone_patterns = 1;
 537
 538                 if (set_opts.use_stdin) {
 539                         struct strbuf unquoted = STRBUF_INIT;
 540                         while (!strbuf_getline(&line, stdin)) {
 541                                 if (line.buf[0] == '"') {
 542                                         strbuf_reset(&unquoted);
 543                                         if (unquote_c_style(&unquoted, line.buf, NULL))
 544                                                 die(_("unable to unquote C-style string '%s'"),
 545                                                 line.buf);
 546
 547                                         strbuf_swap(&unquoted, &line);
 548                                 }
 549
 550                                 strbuf_to_cone_pattern(&line, pl);
 551                         }
 552
 553                         strbuf_release(&unquoted);
 554                 } else {
 555                         for (i = 0; i < argc; i++) {
 556                                 strbuf_setlen(&line, 0);
 557                                 strbuf_addstr(&line, argv[i]);
 558                                 strbuf_to_cone_pattern(&line, pl);
 559                         }
 560                 }
 561         } else {
 562                 if (set_opts.use_stdin) {
 563                         struct strbuf line = STRBUF_INIT;
 564
 565                         while (!strbuf_getline(&line, stdin)) {
 566                                 size_t len;
 567                                 char *buf = strbuf_detach(&line, &len);
 568                                 add_pattern(buf, empty_base, 0, pl, 0);
 569                         }
 570                 } else {
 571                         for (i = 0; i < argc; i++)
 572                                 add_pattern(argv[i], empty_base, 0, pl, 0);
 573                 }
 574         }
 575 }
 576
 577 enum modify_type {
 578         REPLACE,
 579         ADD,
 580 };
 581
 582 static void add_patterns_cone_mode(int argc, const char **argv,
 583                                    struct pattern_list *pl)
 584 {
 585         struct strbuf buffer = STRBUF_INIT;
 586         struct pattern_entry *pe;
 587         struct hashmap_iter iter;
 588         struct pattern_list existing;
 589         char *sparse_filename = get_sparse_checkout_filename();
 590
 591         add_patterns_from_input(pl, argc, argv);
 592
 593         memset(&existing, 0, sizeof(existing));
 594         existing.use_cone_patterns = core_sparse_checkout_cone;
 595
 596         if (add_patterns_from_file_to_list(sparse_filename, "", 0,
 597                                            &existing, NULL, 0))
 598                 die(_("unable to load existing sparse-checkout patterns"));
 599         free(sparse_filename);
 600
 601         hashmap_for_each_entry(&existing.recursive_hashmap, &iter, pe, ent) {
 602                 if (!hashmap_contains_parent(&pl->recursive_hashmap,
 603                                         pe->pattern, &buffer) ||
 604                     !hashmap_contains_parent(&pl->parent_hashmap,
 605                                         pe->pattern, &buffer)) {
 606                         strbuf_reset(&buffer);
 607                         strbuf_addstr(&buffer, pe->pattern);
 608                         insert_recursive_pattern(pl, &buffer);
 609                 }
 610         }
 611
 612         clear_pattern_list(&existing);
 613         strbuf_release(&buffer);
 614 }
 615
 616 static void add_patterns_literal(int argc, const char **argv,
 617                                  struct pattern_list *pl)
 618 {
 619         char *sparse_filename = get_sparse_checkout_filename();
 620         if (add_patterns_from_file_to_list(sparse_filename, "", 0,
 621                                            pl, NULL, 0))
 622                 die(_("unable to load existing sparse-checkout patterns"));
 623         free(sparse_filename);
 624         add_patterns_from_input(pl, argc, argv);
 625 }
 626
 627 static int modify_pattern_list(int argc, const char **argv, enum modify_type m)
 628 {
 629         int result;
 630         int changed_config = 0;
 631         struct pattern_list *pl = xcalloc(1, sizeof(*pl));
 632
 633         switch (m) {
 634         case ADD:
 635                 if (core_sparse_checkout_cone)
 636                         add_patterns_cone_mode(argc, argv, pl);
 637                 else
 638                         add_patterns_literal(argc, argv, pl);
 639                 break;
 640
 641         case REPLACE:
 642                 add_patterns_from_input(pl, argc, argv);
 643                 break;
 644         }
 645
 646         if (!core_apply_sparse_checkout) {
 647                 set_config(MODE_ALL_PATTERNS);
 648                 core_apply_sparse_checkout = 1;
 649                 changed_config = 1;
 650         }
 651
 652         result = write_patterns_and_update(pl);
 653
 654         if (result && changed_config)
 655                 set_config(MODE_NO_PATTERNS);
 656
 657         clear_pattern_list(pl);
 658         free(pl);
 659         return result;
 660 }
 661
 662 static int sparse_checkout_set(int argc, const char **argv, const char *prefix,
 663                                enum modify_type m)
 664 {
 665         static struct option builtin_sparse_checkout_set_options[] = {
 666                 OPT_BOOL(0, "stdin", &set_opts.use_stdin,
 667                          N_("read patterns from standard in")),
 668                 OPT_END(),
 669         };
 670
 671         repo_read_index(the_repository);
 672
 673         argc = parse_options(argc, argv, prefix,
 674                              builtin_sparse_checkout_set_options,
 675                              builtin_sparse_checkout_set_usage,
 676                              PARSE_OPT_KEEP_UNKNOWN);
 677
 678         return modify_pattern_list(argc, argv, m);
 679 }
 680
 681 static char const * const builtin_sparse_checkout_reapply_usage[] = {
 682         N_("git sparse-checkout reapply"),
 683         NULL
 684 };
 685
 686 static int sparse_checkout_reapply(int argc, const char **argv)
 687 {
 688         static struct option builtin_sparse_checkout_reapply_options[] = {
 689                 OPT_END(),
 690         };
 691
 692         argc = parse_options(argc, argv, NULL,
 693                              builtin_sparse_checkout_reapply_options,
 694                              builtin_sparse_checkout_reapply_usage, 0);
 695
 696         repo_read_index(the_repository);
 697         return update_working_directory(NULL);
 698 }
 699
 700 static char const * const builtin_sparse_checkout_disable_usage[] = {
 701         N_("git sparse-checkout disable"),
 702         NULL
 703 };
 704
 705 static int sparse_checkout_disable(int argc, const char **argv)
 706 {
 707         static struct option builtin_sparse_checkout_disable_options[] = {
 708                 OPT_END(),
 709         };
 710         struct pattern_list pl;
 711         struct strbuf match_all = STRBUF_INIT;
 712
 713         argc = parse_options(argc, argv, NULL,
 714                              builtin_sparse_checkout_disable_options,
 715                              builtin_sparse_checkout_disable_usage, 0);
 716
 717         repo_read_index(the_repository);
 718
 719         memset(&pl, 0, sizeof(pl));
 720         hashmap_init(&pl.recursive_hashmap, pl_hashmap_cmp, NULL, 0);
 721         hashmap_init(&pl.parent_hashmap, pl_hashmap_cmp, NULL, 0);
 722         pl.use_cone_patterns = 0;
 723         core_apply_sparse_checkout = 1;
 724
 725         strbuf_addstr(&match_all, "/*");
 726         add_pattern(strbuf_detach(&match_all, NULL), empty_base, 0, &pl, 0);
 727
 728         prepare_repo_settings(the_repository);
 729         the_repository->settings.sparse_index = 0;
 730
 731         if (update_working_directory(&pl))
 732                 die(_("error while refreshing working directory"));
 733
 734         clear_pattern_list(&pl);
 735         return set_config(MODE_NO_PATTERNS);
 736 }
 737
 738 int cmd_sparse_checkout(int argc, const char **argv, const char *prefix)
 739 {
 740         static struct option builtin_sparse_checkout_options[] = {
 741                 OPT_END(),
 742         };
 743
 744         if (argc == 2 && !strcmp(argv[1], "-h"))
 745                 usage_with_options(builtin_sparse_checkout_usage,
 746                                    builtin_sparse_checkout_options);
 747
 748         argc = parse_options(argc, argv, prefix,
 749                              builtin_sparse_checkout_options,
 750                              builtin_sparse_checkout_usage,
 751                              PARSE_OPT_STOP_AT_NON_OPTION);
 752
 753         git_config(git_default_config, NULL);
 754
 755         if (argc > 0) {
 756                 if (!strcmp(argv[0], "list"))
 757                         return sparse_checkout_list(argc, argv);
 758                 if (!strcmp(argv[0], "init"))
 759                         return sparse_checkout_init(argc, argv);
 760                 if (!strcmp(argv[0], "set"))
 761                         return sparse_checkout_set(argc, argv, prefix, REPLACE);
 762                 if (!strcmp(argv[0], "add"))
 763                         return sparse_checkout_set(argc, argv, prefix, ADD);
 764                 if (!strcmp(argv[0], "reapply"))
 765                         return sparse_checkout_reapply(argc, argv);
 766                 if (!strcmp(argv[0], "disable"))
 767                         return sparse_checkout_disable(argc, argv);
 768         }
 769
 770         usage_with_options(builtin_sparse_checkout_usage,
 771                            builtin_sparse_checkout_options);
 772 }