builtin/ls-files.c

   1 /*
   2  * This merges the file listing in the directory cache index
   3  * with the actual working directory list, and shows different
   4  * combinations of the two.
   5  *
   6  * Copyright (C) Linus Torvalds, 2005
   7  */
   8 #define NO_THE_INDEX_COMPATIBILITY_MACROS
   9 #include "cache.h"
  10 #include "repository.h"
  11 #include "config.h"
  12 #include "quote.h"
  13 #include "dir.h"
  14 #include "builtin.h"
  15 #include "tree.h"
  16 #include "parse-options.h"
  17 #include "resolve-undo.h"
  18 #include "string-list.h"
  19 #include "pathspec.h"
  20 #include "run-command.h"
  21 #include "submodule.h"
  22 #include "submodule-config.h"
  23
  24 static int abbrev;
  25 static int show_deleted;
  26 static int show_cached;
  27 static int show_others;
  28 static int show_stage;
  29 static int show_unmerged;
  30 static int show_resolve_undo;
  31 static int show_modified;
  32 static int show_killed;
  33 static int show_valid_bit;
  34 static int line_terminator = '\n';
  35 static int debug_mode;
  36 static int show_eol;
  37 static int recurse_submodules;
  38
  39 static const char *prefix;
  40 static int max_prefix_len;
  41 static int prefix_len;
  42 static struct pathspec pathspec;
  43 static int error_unmatch;
  44 static char *ps_matched;
  45 static const char *with_tree;
  46 static int exc_given;
  47 static int exclude_args;
  48
  49 static const char *tag_cached = "";
  50 static const char *tag_unmerged = "";
  51 static const char *tag_removed = "";
  52 static const char *tag_other = "";
  53 static const char *tag_killed = "";
  54 static const char *tag_modified = "";
  55 static const char *tag_skip_worktree = "";
  56 static const char *tag_resolve_undo = "";
  57
  58 static void write_eolinfo(const struct index_state *istate,
  59                           const struct cache_entry *ce, const char *path)
  60 {
  61         if (show_eol) {
  62                 struct stat st;
  63                 const char *i_txt = "";
  64                 const char *w_txt = "";
  65                 const char *a_txt = get_convert_attr_ascii(path);
  66                 if (ce && S_ISREG(ce->ce_mode))
  67                         i_txt = get_cached_convert_stats_ascii(istate,
  68                                                                ce->name);
  69                 if (!lstat(path, &st) && S_ISREG(st.st_mode))
  70                         w_txt = get_wt_convert_stats_ascii(path);
  71                 printf("i/%-5s w/%-5s attr/%-17s\t", i_txt, w_txt, a_txt);
  72         }
  73 }
  74
  75 static void write_name(const char *name)
  76 {
  77         /*
  78          * With "--full-name", prefix_len=0; this caller needs to pass
  79          * an empty string in that case (a NULL is good for "").
  80          */
  81         write_name_quoted_relative(name, prefix_len ? prefix : NULL,
  82                                    stdout, line_terminator);
  83 }
  84
  85 static const char *get_tag(const struct cache_entry *ce, const char *tag)
  86 {
  87         static char alttag[4];
  88
  89         if (tag && *tag && show_valid_bit && (ce->ce_flags & CE_VALID)) {
  90                 memcpy(alttag, tag, 3);
  91
  92                 if (isalpha(tag[0])) {
  93                         alttag[0] = tolower(tag[0]);
  94                 } else if (tag[0] == '?') {
  95                         alttag[0] = '!';
  96                 } else {
  97                         alttag[0] = 'v';
  98                         alttag[1] = tag[0];
  99                         alttag[2] = ' ';
 100                         alttag[3] = 0;
 101                 }
 102
 103                 tag = alttag;
 104         }
 105
 106         return tag;
 107 }
 108
 109 static void print_debug(const struct cache_entry *ce)
 110 {
 111         if (debug_mode) {
 112                 const struct stat_data *sd = &ce->ce_stat_data;
 113
 114                 printf("  ctime: %d:%d\n", sd->sd_ctime.sec, sd->sd_ctime.nsec);
 115                 printf("  mtime: %d:%d\n", sd->sd_mtime.sec, sd->sd_mtime.nsec);
 116                 printf("  dev: %d\tino: %d\n", sd->sd_dev, sd->sd_ino);
 117                 printf("  uid: %d\tgid: %d\n", sd->sd_uid, sd->sd_gid);
 118                 printf("  size: %d\tflags: %x\n", sd->sd_size, ce->ce_flags);
 119         }
 120 }
 121
 122 static void show_dir_entry(const char *tag, struct dir_entry *ent)
 123 {
 124         int len = max_prefix_len;
 125
 126         if (len > ent->len)
 127                 die("git ls-files: internal error - directory entry not superset of prefix");
 128
 129         if (!dir_path_match(ent, &pathspec, len, ps_matched))
 130                 return;
 131
 132         fputs(tag, stdout);
 133         write_eolinfo(NULL, NULL, ent->name);
 134         write_name(ent->name);
 135 }
 136
 137 static void show_other_files(const struct index_state *istate,
 138                              const struct dir_struct *dir)
 139 {
 140         int i;
 141
 142         for (i = 0; i < dir->nr; i++) {
 143                 struct dir_entry *ent = dir->entries[i];
 144                 if (!index_name_is_other(istate, ent->name, ent->len))
 145                         continue;
 146                 show_dir_entry(tag_other, ent);
 147         }
 148 }
 149
 150 static void show_killed_files(const struct index_state *istate,
 151                               const struct dir_struct *dir)
 152 {
 153         int i;
 154         for (i = 0; i < dir->nr; i++) {
 155                 struct dir_entry *ent = dir->entries[i];
 156                 char *cp, *sp;
 157                 int pos, len, killed = 0;
 158
 159                 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 160                         sp = strchr(cp, '/');
 161                         if (!sp) {
 162                                 /* If ent->name is prefix of an entry in the
 163                                  * cache, it will be killed.
 164                                  */
 165                                 pos = index_name_pos(istate, ent->name, ent->len);
 166                                 if (0 <= pos)
 167                                         die("BUG: killed-file %.*s not found",
 168                                                 ent->len, ent->name);
 169                                 pos = -pos - 1;
 170                                 while (pos < istate->cache_nr &&
 171                                        ce_stage(istate->cache[pos]))
 172                                         pos++; /* skip unmerged */
 173                                 if (istate->cache_nr <= pos)
 174                                         break;
 175                                 /* pos points at a name immediately after
 176                                  * ent->name in the cache.  Does it expect
 177                                  * ent->name to be a directory?
 178                                  */
 179                                 len = ce_namelen(istate->cache[pos]);
 180                                 if ((ent->len < len) &&
 181                                     !strncmp(istate->cache[pos]->name,
 182                                              ent->name, ent->len) &&
 183                                     istate->cache[pos]->name[ent->len] == '/')
 184                                         killed = 1;
 185                                 break;
 186                         }
 187                         if (0 <= index_name_pos(istate, ent->name, sp - ent->name)) {
 188                                 /* If any of the leading directories in
 189                                  * ent->name is registered in the cache,
 190                                  * ent->name will be killed.
 191                                  */
 192                                 killed = 1;
 193                                 break;
 194                         }
 195                 }
 196                 if (killed)
 197                         show_dir_entry(tag_killed, dir->entries[i]);
 198         }
 199 }
 200
 201 static void show_files(struct repository *repo, struct dir_struct *dir);
 202
 203 static void show_submodule(struct repository *superproject,
 204                            struct dir_struct *dir, const char *path)
 205 {
 206         struct repository submodule;
 207
 208         if (repo_submodule_init(&submodule, superproject, path))
 209                 return;
 210
 211         if (repo_read_index(&submodule) < 0)
 212                 die("index file corrupt");
 213
 214         show_files(&submodule, dir);
 215
 216         repo_clear(&submodule);
 217 }
 218
 219 static void show_ce(struct repository *repo, struct dir_struct *dir,
 220                     const struct cache_entry *ce, const char *fullname,
 221                     const char *tag)
 222 {
 223         if (max_prefix_len > strlen(fullname))
 224                 die("git ls-files: internal error - cache entry not superset of prefix");
 225
 226         if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
 227             is_submodule_active(repo, ce->name)) {
 228                 show_submodule(repo, dir, ce->name);
 229         } else if (match_pathspec(&pathspec, fullname, strlen(fullname),
 230                                   max_prefix_len, ps_matched,
 231                                   S_ISDIR(ce->ce_mode) ||
 232                                   S_ISGITLINK(ce->ce_mode))) {
 233                 tag = get_tag(ce, tag);
 234
 235                 if (!show_stage) {
 236                         fputs(tag, stdout);
 237                 } else {
 238                         printf("%s%06o %s %d\t",
 239                                tag,
 240                                ce->ce_mode,
 241                                find_unique_abbrev(ce->oid.hash, abbrev),
 242                                ce_stage(ce));
 243                 }
 244                 write_eolinfo(repo->index, ce, fullname);
 245                 write_name(fullname);
 246                 print_debug(ce);
 247         }
 248 }
 249
 250 static void show_ru_info(const struct index_state *istate)
 251 {
 252         struct string_list_item *item;
 253
 254         if (!istate->resolve_undo)
 255                 return;
 256
 257         for_each_string_list_item(item, istate->resolve_undo) {
 258                 const char *path = item->string;
 259                 struct resolve_undo_info *ui = item->util;
 260                 int i, len;
 261
 262                 len = strlen(path);
 263                 if (len < max_prefix_len)
 264                         continue; /* outside of the prefix */
 265                 if (!match_pathspec(&pathspec, path, len,
 266                                     max_prefix_len, ps_matched, 0))
 267                         continue; /* uninterested */
 268                 for (i = 0; i < 3; i++) {
 269                         if (!ui->mode[i])
 270                                 continue;
 271                         printf("%s%06o %s %d\t", tag_resolve_undo, ui->mode[i],
 272                                find_unique_abbrev(ui->sha1[i], abbrev),
 273                                i + 1);
 274                         write_name(path);
 275                 }
 276         }
 277 }
 278
 279 static int ce_excluded(struct dir_struct *dir, struct index_state *istate,
 280                        const char *fullname, const struct cache_entry *ce)
 281 {
 282         int dtype = ce_to_dtype(ce);
 283         return is_excluded(dir, istate, fullname, &dtype);
 284 }
 285
 286 static void construct_fullname(struct strbuf *out, const struct repository *repo,
 287                                const struct cache_entry *ce)
 288 {
 289         strbuf_reset(out);
 290         if (repo->submodule_prefix)
 291                 strbuf_addstr(out, repo->submodule_prefix);
 292         strbuf_addstr(out, ce->name);
 293 }
 294
 295 static void show_files(struct repository *repo, struct dir_struct *dir)
 296 {
 297         int i;
 298         struct strbuf fullname = STRBUF_INIT;
 299
 300         /* For cached/deleted files we don't need to even do the readdir */
 301         if (show_others || show_killed) {
 302                 if (!show_others)
 303                         dir->flags |= DIR_COLLECT_KILLED_ONLY;
 304                 fill_directory(dir, repo->index, &pathspec);
 305                 if (show_others)
 306                         show_other_files(repo->index, dir);
 307                 if (show_killed)
 308                         show_killed_files(repo->index, dir);
 309         }
 310         if (show_cached || show_stage) {
 311                 for (i = 0; i < repo->index->cache_nr; i++) {
 312                         const struct cache_entry *ce = repo->index->cache[i];
 313
 314                         construct_fullname(&fullname, repo, ce);
 315
 316                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 317                             !ce_excluded(dir, repo->index, fullname.buf, ce))
 318                                 continue;
 319                         if (show_unmerged && !ce_stage(ce))
 320                                 continue;
 321                         if (ce->ce_flags & CE_UPDATE)
 322                                 continue;
 323                         show_ce(repo, dir, ce, fullname.buf,
 324                                 ce_stage(ce) ? tag_unmerged :
 325                                 (ce_skip_worktree(ce) ? tag_skip_worktree :
 326                                  tag_cached));
 327                 }
 328         }
 329         if (show_deleted || show_modified) {
 330                 for (i = 0; i < repo->index->cache_nr; i++) {
 331                         const struct cache_entry *ce = repo->index->cache[i];
 332                         struct stat st;
 333                         int err;
 334
 335                         construct_fullname(&fullname, repo, ce);
 336
 337                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 338                             !ce_excluded(dir, repo->index, fullname.buf, ce))
 339                                 continue;
 340                         if (ce->ce_flags & CE_UPDATE)
 341                                 continue;
 342                         if (ce_skip_worktree(ce))
 343                                 continue;
 344                         err = lstat(fullname.buf, &st);
 345                         if (show_deleted && err)
 346                                 show_ce(repo, dir, ce, fullname.buf, tag_removed);
 347                         if (show_modified && ie_modified(repo->index, ce, &st, 0))
 348                                 show_ce(repo, dir, ce, fullname.buf, tag_modified);
 349                 }
 350         }
 351
 352         strbuf_release(&fullname);
 353 }
 354
 355 /*
 356  * Prune the index to only contain stuff starting with "prefix"
 357  */
 358 static void prune_index(struct index_state *istate,
 359                         const char *prefix, size_t prefixlen)
 360 {
 361         int pos;
 362         unsigned int first, last;
 363
 364         if (!prefix || !istate->cache_nr)
 365                 return;
 366         pos = index_name_pos(istate, prefix, prefixlen);
 367         if (pos < 0)
 368                 pos = -pos-1;
 369         first = pos;
 370         last = istate->cache_nr;
 371         while (last > first) {
 372                 int next = (last + first) >> 1;
 373                 const struct cache_entry *ce = istate->cache[next];
 374                 if (!strncmp(ce->name, prefix, prefixlen)) {
 375                         first = next+1;
 376                         continue;
 377                 }
 378                 last = next;
 379         }
 380         MOVE_ARRAY(istate->cache, istate->cache + pos, last - pos);
 381         istate->cache_nr = last - pos;
 382 }
 383
 384 static int get_common_prefix_len(const char *common_prefix)
 385 {
 386         int common_prefix_len;
 387
 388         if (!common_prefix)
 389                 return 0;
 390
 391         common_prefix_len = strlen(common_prefix);
 392
 393         /*
 394          * If the prefix has a trailing slash, strip it so that submodules wont
 395          * be pruned from the index.
 396          */
 397         if (common_prefix[common_prefix_len - 1] == '/')
 398                 common_prefix_len--;
 399
 400         return common_prefix_len;
 401 }
 402
 403 /*
 404  * Read the tree specified with --with-tree option
 405  * (typically, HEAD) into stage #1 and then
 406  * squash them down to stage #0.  This is used for
 407  * --error-unmatch to list and check the path patterns
 408  * that were given from the command line.  We are not
 409  * going to write this index out.
 410  */
 411 void overlay_tree_on_index(struct index_state *istate,
 412                            const char *tree_name, const char *prefix)
 413 {
 414         struct tree *tree;
 415         struct object_id oid;
 416         struct pathspec pathspec;
 417         struct cache_entry *last_stage0 = NULL;
 418         int i;
 419
 420         if (get_oid(tree_name, &oid))
 421                 die("tree-ish %s not found.", tree_name);
 422         tree = parse_tree_indirect(&oid);
 423         if (!tree)
 424                 die("bad tree-ish %s", tree_name);
 425
 426         /* Hoist the unmerged entries up to stage #3 to make room */
 427         for (i = 0; i < istate->cache_nr; i++) {
 428                 struct cache_entry *ce = istate->cache[i];
 429                 if (!ce_stage(ce))
 430                         continue;
 431                 ce->ce_flags |= CE_STAGEMASK;
 432         }
 433
 434         if (prefix) {
 435                 static const char *(matchbuf[1]);
 436                 matchbuf[0] = NULL;
 437                 parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC,
 438                                PATHSPEC_PREFER_CWD, prefix, matchbuf);
 439         } else
 440                 memset(&pathspec, 0, sizeof(pathspec));
 441         if (read_tree(tree, 1, &pathspec, istate))
 442                 die("unable to read tree entries %s", tree_name);
 443
 444         for (i = 0; i < istate->cache_nr; i++) {
 445                 struct cache_entry *ce = istate->cache[i];
 446                 switch (ce_stage(ce)) {
 447                 case 0:
 448                         last_stage0 = ce;
 449                         /* fallthru */
 450                 default:
 451                         continue;
 452                 case 1:
 453                         /*
 454                          * If there is stage #0 entry for this, we do not
 455                          * need to show it.  We use CE_UPDATE bit to mark
 456                          * such an entry.
 457                          */
 458                         if (last_stage0 &&
 459                             !strcmp(last_stage0->name, ce->name))
 460                                 ce->ce_flags |= CE_UPDATE;
 461                 }
 462         }
 463 }
 464
 465 static const char * const ls_files_usage[] = {
 466         N_("git ls-files [<options>] [<file>...]"),
 467         NULL
 468 };
 469
 470 static int option_parse_exclude(const struct option *opt,
 471                                 const char *arg, int unset)
 472 {
 473         struct string_list *exclude_list = opt->value;
 474
 475         exc_given = 1;
 476         string_list_append(exclude_list, arg);
 477
 478         return 0;
 479 }
 480
 481 static int option_parse_exclude_from(const struct option *opt,
 482                                      const char *arg, int unset)
 483 {
 484         struct dir_struct *dir = opt->value;
 485
 486         exc_given = 1;
 487         add_excludes_from_file(dir, arg);
 488
 489         return 0;
 490 }
 491
 492 static int option_parse_exclude_standard(const struct option *opt,
 493                                          const char *arg, int unset)
 494 {
 495         struct dir_struct *dir = opt->value;
 496
 497         exc_given = 1;
 498         setup_standard_excludes(dir);
 499
 500         return 0;
 501 }
 502
 503 int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 504 {
 505         int require_work_tree = 0, show_tag = 0, i;
 506         const char *max_prefix;
 507         struct dir_struct dir;
 508         struct exclude_list *el;
 509         struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 510         struct option builtin_ls_files_options[] = {
 511                 /* Think twice before adding "--nul" synonym to this */
 512                 OPT_SET_INT('z', NULL, &line_terminator,
 513                         N_("paths are separated with NUL character"), '\0'),
 514                 OPT_BOOL('t', NULL, &show_tag,
 515                         N_("identify the file status with tags")),
 516                 OPT_BOOL('v', NULL, &show_valid_bit,
 517                         N_("use lowercase letters for 'assume unchanged' files")),
 518                 OPT_BOOL('c', "cached", &show_cached,
 519                         N_("show cached files in the output (default)")),
 520                 OPT_BOOL('d', "deleted", &show_deleted,
 521                         N_("show deleted files in the output")),
 522                 OPT_BOOL('m', "modified", &show_modified,
 523                         N_("show modified files in the output")),
 524                 OPT_BOOL('o', "others", &show_others,
 525                         N_("show other files in the output")),
 526                 OPT_BIT('i', "ignored", &dir.flags,
 527                         N_("show ignored files in the output"),
 528                         DIR_SHOW_IGNORED),
 529                 OPT_BOOL('s', "stage", &show_stage,
 530                         N_("show staged contents' object name in the output")),
 531                 OPT_BOOL('k', "killed", &show_killed,
 532                         N_("show files on the filesystem that need to be removed")),
 533                 OPT_BIT(0, "directory", &dir.flags,
 534                         N_("show 'other' directories' names only"),
 535                         DIR_SHOW_OTHER_DIRECTORIES),
 536                 OPT_BOOL(0, "eol", &show_eol, N_("show line endings of files")),
 537                 OPT_NEGBIT(0, "empty-directory", &dir.flags,
 538                         N_("don't show empty directories"),
 539                         DIR_HIDE_EMPTY_DIRECTORIES),
 540                 OPT_BOOL('u', "unmerged", &show_unmerged,
 541                         N_("show unmerged files in the output")),
 542                 OPT_BOOL(0, "resolve-undo", &show_resolve_undo,
 543                             N_("show resolve-undo information")),
 544                 { OPTION_CALLBACK, 'x', "exclude", &exclude_list, N_("pattern"),
 545                         N_("skip files matching pattern"),
 546                         0, option_parse_exclude },
 547                 { OPTION_CALLBACK, 'X', "exclude-from", &dir, N_("file"),
 548                         N_("exclude patterns are read from <file>"),
 549                         0, option_parse_exclude_from },
 550                 OPT_STRING(0, "exclude-per-directory", &dir.exclude_per_dir, N_("file"),
 551                         N_("read additional per-directory exclude patterns in <file>")),
 552                 { OPTION_CALLBACK, 0, "exclude-standard", &dir, NULL,
 553                         N_("add the standard git exclusions"),
 554                         PARSE_OPT_NOARG, option_parse_exclude_standard },
 555                 { OPTION_SET_INT, 0, "full-name", &prefix_len, NULL,
 556                         N_("make the output relative to the project top directory"),
 557                         PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL },
 558                 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
 559                         N_("recurse through submodules")),
 560                 OPT_BOOL(0, "error-unmatch", &error_unmatch,
 561                         N_("if any <file> is not in the index, treat this as an error")),
 562                 OPT_STRING(0, "with-tree", &with_tree, N_("tree-ish"),
 563                         N_("pretend that paths removed since <tree-ish> are still present")),
 564                 OPT__ABBREV(&abbrev),
 565                 OPT_BOOL(0, "debug", &debug_mode, N_("show debugging data")),
 566                 OPT_END()
 567         };
 568
 569         if (argc == 2 && !strcmp(argv[1], "-h"))
 570                 usage_with_options(ls_files_usage, builtin_ls_files_options);
 571
 572         memset(&dir, 0, sizeof(dir));
 573         prefix = cmd_prefix;
 574         if (prefix)
 575                 prefix_len = strlen(prefix);
 576         git_config(git_default_config, NULL);
 577
 578         if (repo_read_index(the_repository) < 0)
 579                 die("index file corrupt");
 580
 581         argc = parse_options(argc, argv, prefix, builtin_ls_files_options,
 582                         ls_files_usage, 0);
 583         el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 584         for (i = 0; i < exclude_list.nr; i++) {
 585                 add_exclude(exclude_list.items[i].string, "", 0, el, --exclude_args);
 586         }
 587         if (show_tag || show_valid_bit) {
 588                 tag_cached = "H ";
 589                 tag_unmerged = "M ";
 590                 tag_removed = "R ";
 591                 tag_modified = "C ";
 592                 tag_other = "? ";
 593                 tag_killed = "K ";
 594                 tag_skip_worktree = "S ";
 595                 tag_resolve_undo = "U ";
 596         }
 597         if (show_modified || show_others || show_deleted || (dir.flags & DIR_SHOW_IGNORED) || show_killed)
 598                 require_work_tree = 1;
 599         if (show_unmerged)
 600                 /*
 601                  * There's no point in showing unmerged unless
 602                  * you also show the stage information.
 603                  */
 604                 show_stage = 1;
 605         if (dir.exclude_per_dir)
 606                 exc_given = 1;
 607
 608         if (require_work_tree && !is_inside_work_tree())
 609                 setup_work_tree();
 610
 611         if (recurse_submodules &&
 612             (show_stage || show_deleted || show_others || show_unmerged ||
 613              show_killed || show_modified || show_resolve_undo || with_tree))
 614                 die("ls-files --recurse-submodules unsupported mode");
 615
 616         if (recurse_submodules && error_unmatch)
 617                 die("ls-files --recurse-submodules does not support "
 618                     "--error-unmatch");
 619
 620         parse_pathspec(&pathspec, 0,
 621                        PATHSPEC_PREFER_CWD,
 622                        prefix, argv);
 623
 624         /*
 625          * Find common prefix for all pathspec's
 626          * This is used as a performance optimization which unfortunately cannot
 627          * be done when recursing into submodules because when a pathspec is
 628          * given which spans repository boundaries you can't simply remove the
 629          * submodule entry because the pathspec may match something inside the
 630          * submodule.
 631          */
 632         if (recurse_submodules)
 633                 max_prefix = NULL;
 634         else
 635                 max_prefix = common_prefix(&pathspec);
 636         max_prefix_len = get_common_prefix_len(max_prefix);
 637
 638         prune_index(the_repository->index, max_prefix, max_prefix_len);
 639
 640         /* Treat unmatching pathspec elements as errors */
 641         if (pathspec.nr && error_unmatch)
 642                 ps_matched = xcalloc(pathspec.nr, 1);
 643
 644         if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given)
 645                 die("ls-files --ignored needs some exclude pattern");
 646
 647         /* With no flags, we default to showing the cached files */
 648         if (!(show_stage || show_deleted || show_others || show_unmerged ||
 649               show_killed || show_modified || show_resolve_undo))
 650                 show_cached = 1;
 651
 652         if (with_tree) {
 653                 /*
 654                  * Basic sanity check; show-stages and show-unmerged
 655                  * would not make any sense with this option.
 656                  */
 657                 if (show_stage || show_unmerged)
 658                         die("ls-files --with-tree is incompatible with -s or -u");
 659                 overlay_tree_on_index(the_repository->index, with_tree, max_prefix);
 660         }
 661
 662         show_files(the_repository, &dir);
 663
 664         if (show_resolve_undo)
 665                 show_ru_info(the_repository->index);
 666
 667         if (ps_matched) {
 668                 int bad;
 669                 bad = report_path_error(ps_matched, &pathspec, prefix);
 670                 if (bad)
 671                         fprintf(stderr, "Did you forget to 'git add'?\n");
 672
 673                 return bad ? 1 : 0;
 674         }
 675
 676         UNLEAK(dir);
 677         return 0;
 678 }