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 #include "cache.h"
   9 #include "quote.h"
  10 #include "dir.h"
  11 #include "builtin.h"
  12 #include "tree.h"
  13 #include "parse-options.h"
  14 #include "resolve-undo.h"
  15 #include "string-list.h"
  16 #include "pathspec.h"
  17 #include "run-command.h"
  18
  19 static int abbrev;
  20 static int show_deleted;
  21 static int show_cached;
  22 static int show_others;
  23 static int show_stage;
  24 static int show_unmerged;
  25 static int show_resolve_undo;
  26 static int show_modified;
  27 static int show_killed;
  28 static int show_valid_bit;
  29 static int line_terminator = '\n';
  30 static int debug_mode;
  31 static int show_eol;
  32 static int recurse_submodules;
  33 static struct argv_array submodules_options = ARGV_ARRAY_INIT;
  34
  35 static const char *prefix;
  36 static const char *super_prefix;
  37 static int max_prefix_len;
  38 static int prefix_len;
  39 static struct pathspec pathspec;
  40 static int error_unmatch;
  41 static char *ps_matched;
  42 static const char *with_tree;
  43 static int exc_given;
  44 static int exclude_args;
  45
  46 static const char *tag_cached = "";
  47 static const char *tag_unmerged = "";
  48 static const char *tag_removed = "";
  49 static const char *tag_other = "";
  50 static const char *tag_killed = "";
  51 static const char *tag_modified = "";
  52 static const char *tag_skip_worktree = "";
  53 static const char *tag_resolve_undo = "";
  54
  55 static void write_eolinfo(const struct cache_entry *ce, const char *path)
  56 {
  57         if (!show_eol)
  58                 return;
  59         else {
  60                 struct stat st;
  61                 const char *i_txt = "";
  62                 const char *w_txt = "";
  63                 const char *a_txt = get_convert_attr_ascii(path);
  64                 if (ce && S_ISREG(ce->ce_mode))
  65                         i_txt = get_cached_convert_stats_ascii(ce->name);
  66                 if (!lstat(path, &st) && S_ISREG(st.st_mode))
  67                         w_txt = get_wt_convert_stats_ascii(path);
  68                 printf("i/%-5s w/%-5s attr/%-17s\t", i_txt, w_txt, a_txt);
  69         }
  70 }
  71
  72 static void write_name(const char *name)
  73 {
  74         /*
  75          * Prepend the super_prefix to name to construct the full_name to be
  76          * written.
  77          */
  78         struct strbuf full_name = STRBUF_INIT;
  79         if (super_prefix) {
  80                 strbuf_addstr(&full_name, super_prefix);
  81                 strbuf_addstr(&full_name, name);
  82                 name = full_name.buf;
  83         }
  84
  85         /*
  86          * With "--full-name", prefix_len=0; this caller needs to pass
  87          * an empty string in that case (a NULL is good for "").
  88          */
  89         write_name_quoted_relative(name, prefix_len ? prefix : NULL,
  90                                    stdout, line_terminator);
  91
  92         strbuf_release(&full_name);
  93 }
  94
  95 static void show_dir_entry(const char *tag, struct dir_entry *ent)
  96 {
  97         int len = max_prefix_len;
  98
  99         if (len >= ent->len)
 100                 die("git ls-files: internal error - directory entry not superset of prefix");
 101
 102         if (!dir_path_match(ent, &pathspec, len, ps_matched))
 103                 return;
 104
 105         fputs(tag, stdout);
 106         write_eolinfo(NULL, ent->name);
 107         write_name(ent->name);
 108 }
 109
 110 static void show_other_files(struct dir_struct *dir)
 111 {
 112         int i;
 113
 114         for (i = 0; i < dir->nr; i++) {
 115                 struct dir_entry *ent = dir->entries[i];
 116                 if (!cache_name_is_other(ent->name, ent->len))
 117                         continue;
 118                 show_dir_entry(tag_other, ent);
 119         }
 120 }
 121
 122 static void show_killed_files(struct dir_struct *dir)
 123 {
 124         int i;
 125         for (i = 0; i < dir->nr; i++) {
 126                 struct dir_entry *ent = dir->entries[i];
 127                 char *cp, *sp;
 128                 int pos, len, killed = 0;
 129
 130                 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 131                         sp = strchr(cp, '/');
 132                         if (!sp) {
 133                                 /* If ent->name is prefix of an entry in the
 134                                  * cache, it will be killed.
 135                                  */
 136                                 pos = cache_name_pos(ent->name, ent->len);
 137                                 if (0 <= pos)
 138                                         die("BUG: killed-file %.*s not found",
 139                                                 ent->len, ent->name);
 140                                 pos = -pos - 1;
 141                                 while (pos < active_nr &&
 142                                        ce_stage(active_cache[pos]))
 143                                         pos++; /* skip unmerged */
 144                                 if (active_nr <= pos)
 145                                         break;
 146                                 /* pos points at a name immediately after
 147                                  * ent->name in the cache.  Does it expect
 148                                  * ent->name to be a directory?
 149                                  */
 150                                 len = ce_namelen(active_cache[pos]);
 151                                 if ((ent->len < len) &&
 152                                     !strncmp(active_cache[pos]->name,
 153                                              ent->name, ent->len) &&
 154                                     active_cache[pos]->name[ent->len] == '/')
 155                                         killed = 1;
 156                                 break;
 157                         }
 158                         if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
 159                                 /* If any of the leading directories in
 160                                  * ent->name is registered in the cache,
 161                                  * ent->name will be killed.
 162                                  */
 163                                 killed = 1;
 164                                 break;
 165                         }
 166                 }
 167                 if (killed)
 168                         show_dir_entry(tag_killed, dir->entries[i]);
 169         }
 170 }
 171
 172 /*
 173  * Compile an argv_array with all of the options supported by --recurse_submodules
 174  */
 175 static void compile_submodule_options(const struct dir_struct *dir, int show_tag)
 176 {
 177         if (line_terminator == '\0')
 178                 argv_array_push(&submodules_options, "-z");
 179         if (show_tag)
 180                 argv_array_push(&submodules_options, "-t");
 181         if (show_valid_bit)
 182                 argv_array_push(&submodules_options, "-v");
 183         if (show_cached)
 184                 argv_array_push(&submodules_options, "--cached");
 185         if (show_eol)
 186                 argv_array_push(&submodules_options, "--eol");
 187         if (debug_mode)
 188                 argv_array_push(&submodules_options, "--debug");
 189 }
 190
 191 /**
 192  * Recursively call ls-files on a submodule
 193  */
 194 static void show_gitlink(const struct cache_entry *ce)
 195 {
 196         struct child_process cp = CHILD_PROCESS_INIT;
 197         int status;
 198         int i;
 199
 200         argv_array_pushf(&cp.args, "--super-prefix=%s%s/",
 201                          super_prefix ? super_prefix : "",
 202                          ce->name);
 203         argv_array_push(&cp.args, "ls-files");
 204         argv_array_push(&cp.args, "--recurse-submodules");
 205
 206         /* add supported options */
 207         argv_array_pushv(&cp.args, submodules_options.argv);
 208
 209         /*
 210          * Pass in the original pathspec args.  The submodule will be
 211          * responsible for prepending the 'submodule_prefix' prior to comparing
 212          * against the pathspec for matches.
 213          */
 214         argv_array_push(&cp.args, "--");
 215         for (i = 0; i < pathspec.nr; i++)
 216                 argv_array_push(&cp.args, pathspec.items[i].original);
 217
 218         cp.git_cmd = 1;
 219         cp.dir = ce->name;
 220         status = run_command(&cp);
 221         if (status)
 222                 exit(status);
 223 }
 224
 225 static void show_ce_entry(const char *tag, const struct cache_entry *ce)
 226 {
 227         struct strbuf name = STRBUF_INIT;
 228         int len = max_prefix_len;
 229         if (super_prefix)
 230                 strbuf_addstr(&name, super_prefix);
 231         strbuf_addstr(&name, ce->name);
 232
 233         if (len >= ce_namelen(ce))
 234                 die("git ls-files: internal error - cache entry not superset of prefix");
 235
 236         if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
 237             submodule_path_match(&pathspec, name.buf, ps_matched)) {
 238                 show_gitlink(ce);
 239         } else if (match_pathspec(&pathspec, name.buf, name.len,
 240                                   len, ps_matched,
 241                                   S_ISDIR(ce->ce_mode) ||
 242                                   S_ISGITLINK(ce->ce_mode))) {
 243                 if (tag && *tag && show_valid_bit &&
 244                     (ce->ce_flags & CE_VALID)) {
 245                         static char alttag[4];
 246                         memcpy(alttag, tag, 3);
 247                         if (isalpha(tag[0]))
 248                                 alttag[0] = tolower(tag[0]);
 249                         else if (tag[0] == '?')
 250                                 alttag[0] = '!';
 251                         else {
 252                                 alttag[0] = 'v';
 253                                 alttag[1] = tag[0];
 254                                 alttag[2] = ' ';
 255                                 alttag[3] = 0;
 256                         }
 257                         tag = alttag;
 258                 }
 259
 260                 if (!show_stage) {
 261                         fputs(tag, stdout);
 262                 } else {
 263                         printf("%s%06o %s %d\t",
 264                                tag,
 265                                ce->ce_mode,
 266                                find_unique_abbrev(ce->oid.hash, abbrev),
 267                                ce_stage(ce));
 268                 }
 269                 write_eolinfo(ce, ce->name);
 270                 write_name(ce->name);
 271                 if (debug_mode) {
 272                         const struct stat_data *sd = &ce->ce_stat_data;
 273
 274                         printf("  ctime: %d:%d\n", sd->sd_ctime.sec, sd->sd_ctime.nsec);
 275                         printf("  mtime: %d:%d\n", sd->sd_mtime.sec, sd->sd_mtime.nsec);
 276                         printf("  dev: %d\tino: %d\n", sd->sd_dev, sd->sd_ino);
 277                         printf("  uid: %d\tgid: %d\n", sd->sd_uid, sd->sd_gid);
 278                         printf("  size: %d\tflags: %x\n", sd->sd_size, ce->ce_flags);
 279                 }
 280         }
 281
 282         strbuf_release(&name);
 283 }
 284
 285 static void show_ru_info(void)
 286 {
 287         struct string_list_item *item;
 288
 289         if (!the_index.resolve_undo)
 290                 return;
 291
 292         for_each_string_list_item(item, the_index.resolve_undo) {
 293                 const char *path = item->string;
 294                 struct resolve_undo_info *ui = item->util;
 295                 int i, len;
 296
 297                 len = strlen(path);
 298                 if (len < max_prefix_len)
 299                         continue; /* outside of the prefix */
 300                 if (!match_pathspec(&pathspec, path, len,
 301                                     max_prefix_len, ps_matched, 0))
 302                         continue; /* uninterested */
 303                 for (i = 0; i < 3; i++) {
 304                         if (!ui->mode[i])
 305                                 continue;
 306                         printf("%s%06o %s %d\t", tag_resolve_undo, ui->mode[i],
 307                                find_unique_abbrev(ui->sha1[i], abbrev),
 308                                i + 1);
 309                         write_name(path);
 310                 }
 311         }
 312 }
 313
 314 static int ce_excluded(struct dir_struct *dir, const struct cache_entry *ce)
 315 {
 316         int dtype = ce_to_dtype(ce);
 317         return is_excluded(dir, ce->name, &dtype);
 318 }
 319
 320 static void show_files(struct dir_struct *dir)
 321 {
 322         int i;
 323
 324         /* For cached/deleted files we don't need to even do the readdir */
 325         if (show_others || show_killed) {
 326                 if (!show_others)
 327                         dir->flags |= DIR_COLLECT_KILLED_ONLY;
 328                 fill_directory(dir, &pathspec);
 329                 if (show_others)
 330                         show_other_files(dir);
 331                 if (show_killed)
 332                         show_killed_files(dir);
 333         }
 334         if (show_cached || show_stage) {
 335                 for (i = 0; i < active_nr; i++) {
 336                         const struct cache_entry *ce = active_cache[i];
 337                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 338                             !ce_excluded(dir, ce))
 339                                 continue;
 340                         if (show_unmerged && !ce_stage(ce))
 341                                 continue;
 342                         if (ce->ce_flags & CE_UPDATE)
 343                                 continue;
 344                         show_ce_entry(ce_stage(ce) ? tag_unmerged :
 345                                 (ce_skip_worktree(ce) ? tag_skip_worktree : tag_cached), ce);
 346                 }
 347         }
 348         if (show_deleted || show_modified) {
 349                 for (i = 0; i < active_nr; i++) {
 350                         const struct cache_entry *ce = active_cache[i];
 351                         struct stat st;
 352                         int err;
 353                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 354                             !ce_excluded(dir, ce))
 355                                 continue;
 356                         if (ce->ce_flags & CE_UPDATE)
 357                                 continue;
 358                         if (ce_skip_worktree(ce))
 359                                 continue;
 360                         err = lstat(ce->name, &st);
 361                         if (show_deleted && err)
 362                                 show_ce_entry(tag_removed, ce);
 363                         if (show_modified && ce_modified(ce, &st, 0))
 364                                 show_ce_entry(tag_modified, ce);
 365                 }
 366         }
 367 }
 368
 369 /*
 370  * Prune the index to only contain stuff starting with "prefix"
 371  */
 372 static void prune_cache(const char *prefix, size_t prefixlen)
 373 {
 374         int pos;
 375         unsigned int first, last;
 376
 377         if (!prefix)
 378                 return;
 379         pos = cache_name_pos(prefix, prefixlen);
 380         if (pos < 0)
 381                 pos = -pos-1;
 382         first = pos;
 383         last = active_nr;
 384         while (last > first) {
 385                 int next = (last + first) >> 1;
 386                 const struct cache_entry *ce = active_cache[next];
 387                 if (!strncmp(ce->name, prefix, prefixlen)) {
 388                         first = next+1;
 389                         continue;
 390                 }
 391                 last = next;
 392         }
 393         memmove(active_cache, active_cache + pos,
 394                 (last - pos) * sizeof(struct cache_entry *));
 395         active_nr = last - pos;
 396 }
 397
 398 /*
 399  * Read the tree specified with --with-tree option
 400  * (typically, HEAD) into stage #1 and then
 401  * squash them down to stage #0.  This is used for
 402  * --error-unmatch to list and check the path patterns
 403  * that were given from the command line.  We are not
 404  * going to write this index out.
 405  */
 406 void overlay_tree_on_cache(const char *tree_name, const char *prefix)
 407 {
 408         struct tree *tree;
 409         unsigned char sha1[20];
 410         struct pathspec pathspec;
 411         struct cache_entry *last_stage0 = NULL;
 412         int i;
 413
 414         if (get_sha1(tree_name, sha1))
 415                 die("tree-ish %s not found.", tree_name);
 416         tree = parse_tree_indirect(sha1);
 417         if (!tree)
 418                 die("bad tree-ish %s", tree_name);
 419
 420         /* Hoist the unmerged entries up to stage #3 to make room */
 421         for (i = 0; i < active_nr; i++) {
 422                 struct cache_entry *ce = active_cache[i];
 423                 if (!ce_stage(ce))
 424                         continue;
 425                 ce->ce_flags |= CE_STAGEMASK;
 426         }
 427
 428         if (prefix) {
 429                 static const char *(matchbuf[1]);
 430                 matchbuf[0] = NULL;
 431                 parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC,
 432                                PATHSPEC_PREFER_CWD, prefix, matchbuf);
 433         } else
 434                 memset(&pathspec, 0, sizeof(pathspec));
 435         if (read_tree(tree, 1, &pathspec))
 436                 die("unable to read tree entries %s", tree_name);
 437
 438         for (i = 0; i < active_nr; i++) {
 439                 struct cache_entry *ce = active_cache[i];
 440                 switch (ce_stage(ce)) {
 441                 case 0:
 442                         last_stage0 = ce;
 443                         /* fallthru */
 444                 default:
 445                         continue;
 446                 case 1:
 447                         /*
 448                          * If there is stage #0 entry for this, we do not
 449                          * need to show it.  We use CE_UPDATE bit to mark
 450                          * such an entry.
 451                          */
 452                         if (last_stage0 &&
 453                             !strcmp(last_stage0->name, ce->name))
 454                                 ce->ce_flags |= CE_UPDATE;
 455                 }
 456         }
 457 }
 458
 459 static const char * const ls_files_usage[] = {
 460         N_("git ls-files [<options>] [<file>...]"),
 461         NULL
 462 };
 463
 464 static int option_parse_exclude(const struct option *opt,
 465                                 const char *arg, int unset)
 466 {
 467         struct string_list *exclude_list = opt->value;
 468
 469         exc_given = 1;
 470         string_list_append(exclude_list, arg);
 471
 472         return 0;
 473 }
 474
 475 static int option_parse_exclude_from(const struct option *opt,
 476                                      const char *arg, int unset)
 477 {
 478         struct dir_struct *dir = opt->value;
 479
 480         exc_given = 1;
 481         add_excludes_from_file(dir, arg);
 482
 483         return 0;
 484 }
 485
 486 static int option_parse_exclude_standard(const struct option *opt,
 487                                          const char *arg, int unset)
 488 {
 489         struct dir_struct *dir = opt->value;
 490
 491         exc_given = 1;
 492         setup_standard_excludes(dir);
 493
 494         return 0;
 495 }
 496
 497 int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 498 {
 499         int require_work_tree = 0, show_tag = 0, i;
 500         const char *max_prefix;
 501         struct dir_struct dir;
 502         struct exclude_list *el;
 503         struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 504         struct option builtin_ls_files_options[] = {
 505                 /* Think twice before adding "--nul" synonym to this */
 506                 OPT_SET_INT('z', NULL, &line_terminator,
 507                         N_("paths are separated with NUL character"), '\0'),
 508                 OPT_BOOL('t', NULL, &show_tag,
 509                         N_("identify the file status with tags")),
 510                 OPT_BOOL('v', NULL, &show_valid_bit,
 511                         N_("use lowercase letters for 'assume unchanged' files")),
 512                 OPT_BOOL('c', "cached", &show_cached,
 513                         N_("show cached files in the output (default)")),
 514                 OPT_BOOL('d', "deleted", &show_deleted,
 515                         N_("show deleted files in the output")),
 516                 OPT_BOOL('m', "modified", &show_modified,
 517                         N_("show modified files in the output")),
 518                 OPT_BOOL('o', "others", &show_others,
 519                         N_("show other files in the output")),
 520                 OPT_BIT('i', "ignored", &dir.flags,
 521                         N_("show ignored files in the output"),
 522                         DIR_SHOW_IGNORED),
 523                 OPT_BOOL('s', "stage", &show_stage,
 524                         N_("show staged contents' object name in the output")),
 525                 OPT_BOOL('k', "killed", &show_killed,
 526                         N_("show files on the filesystem that need to be removed")),
 527                 OPT_BIT(0, "directory", &dir.flags,
 528                         N_("show 'other' directories' names only"),
 529                         DIR_SHOW_OTHER_DIRECTORIES),
 530                 OPT_BOOL(0, "eol", &show_eol, N_("show line endings of files")),
 531                 OPT_NEGBIT(0, "empty-directory", &dir.flags,
 532                         N_("don't show empty directories"),
 533                         DIR_HIDE_EMPTY_DIRECTORIES),
 534                 OPT_BOOL('u', "unmerged", &show_unmerged,
 535                         N_("show unmerged files in the output")),
 536                 OPT_BOOL(0, "resolve-undo", &show_resolve_undo,
 537                             N_("show resolve-undo information")),
 538                 { OPTION_CALLBACK, 'x', "exclude", &exclude_list, N_("pattern"),
 539                         N_("skip files matching pattern"),
 540                         0, option_parse_exclude },
 541                 { OPTION_CALLBACK, 'X', "exclude-from", &dir, N_("file"),
 542                         N_("exclude patterns are read from <file>"),
 543                         0, option_parse_exclude_from },
 544                 OPT_STRING(0, "exclude-per-directory", &dir.exclude_per_dir, N_("file"),
 545                         N_("read additional per-directory exclude patterns in <file>")),
 546                 { OPTION_CALLBACK, 0, "exclude-standard", &dir, NULL,
 547                         N_("add the standard git exclusions"),
 548                         PARSE_OPT_NOARG, option_parse_exclude_standard },
 549                 { OPTION_SET_INT, 0, "full-name", &prefix_len, NULL,
 550                         N_("make the output relative to the project top directory"),
 551                         PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL },
 552                 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
 553                         N_("recurse through submodules")),
 554                 OPT_BOOL(0, "error-unmatch", &error_unmatch,
 555                         N_("if any <file> is not in the index, treat this as an error")),
 556                 OPT_STRING(0, "with-tree", &with_tree, N_("tree-ish"),
 557                         N_("pretend that paths removed since <tree-ish> are still present")),
 558                 OPT__ABBREV(&abbrev),
 559                 OPT_BOOL(0, "debug", &debug_mode, N_("show debugging data")),
 560                 OPT_END()
 561         };
 562
 563         if (argc == 2 && !strcmp(argv[1], "-h"))
 564                 usage_with_options(ls_files_usage, builtin_ls_files_options);
 565
 566         memset(&dir, 0, sizeof(dir));
 567         prefix = cmd_prefix;
 568         if (prefix)
 569                 prefix_len = strlen(prefix);
 570         super_prefix = get_super_prefix();
 571         git_config(git_default_config, NULL);
 572
 573         if (read_cache() < 0)
 574                 die("index file corrupt");
 575
 576         argc = parse_options(argc, argv, prefix, builtin_ls_files_options,
 577                         ls_files_usage, 0);
 578         el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 579         for (i = 0; i < exclude_list.nr; i++) {
 580                 add_exclude(exclude_list.items[i].string, "", 0, el, --exclude_args);
 581         }
 582         if (show_tag || show_valid_bit) {
 583                 tag_cached = "H ";
 584                 tag_unmerged = "M ";
 585                 tag_removed = "R ";
 586                 tag_modified = "C ";
 587                 tag_other = "? ";
 588                 tag_killed = "K ";
 589                 tag_skip_worktree = "S ";
 590                 tag_resolve_undo = "U ";
 591         }
 592         if (show_modified || show_others || show_deleted || (dir.flags & DIR_SHOW_IGNORED) || show_killed)
 593                 require_work_tree = 1;
 594         if (show_unmerged)
 595                 /*
 596                  * There's no point in showing unmerged unless
 597                  * you also show the stage information.
 598                  */
 599                 show_stage = 1;
 600         if (dir.exclude_per_dir)
 601                 exc_given = 1;
 602
 603         if (require_work_tree && !is_inside_work_tree())
 604                 setup_work_tree();
 605
 606         if (recurse_submodules)
 607                 compile_submodule_options(&dir, show_tag);
 608
 609         if (recurse_submodules &&
 610             (show_stage || show_deleted || show_others || show_unmerged ||
 611              show_killed || show_modified || show_resolve_undo || with_tree))
 612                 die("ls-files --recurse-submodules unsupported mode");
 613
 614         if (recurse_submodules && error_unmatch)
 615                 die("ls-files --recurse-submodules does not support "
 616                     "--error-unmatch");
 617
 618         parse_pathspec(&pathspec, 0,
 619                        PATHSPEC_PREFER_CWD |
 620                        PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
 621                        prefix, argv);
 622
 623         /*
 624          * Find common prefix for all pathspec's
 625          * This is used as a performance optimization which unfortunately cannot
 626          * be done when recursing into submodules
 627          */
 628         if (recurse_submodules)
 629                 max_prefix = NULL;
 630         else
 631                 max_prefix = common_prefix(&pathspec);
 632         max_prefix_len = max_prefix ? strlen(max_prefix) : 0;
 633
 634         /* Treat unmatching pathspec elements as errors */
 635         if (pathspec.nr && error_unmatch)
 636                 ps_matched = xcalloc(pathspec.nr, 1);
 637
 638         if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given)
 639                 die("ls-files --ignored needs some exclude pattern");
 640
 641         /* With no flags, we default to showing the cached files */
 642         if (!(show_stage || show_deleted || show_others || show_unmerged ||
 643               show_killed || show_modified || show_resolve_undo))
 644                 show_cached = 1;
 645
 646         prune_cache(max_prefix, max_prefix_len);
 647         if (with_tree) {
 648                 /*
 649                  * Basic sanity check; show-stages and show-unmerged
 650                  * would not make any sense with this option.
 651                  */
 652                 if (show_stage || show_unmerged)
 653                         die("ls-files --with-tree is incompatible with -s or -u");
 654                 overlay_tree_on_cache(with_tree, max_prefix);
 655         }
 656         show_files(&dir);
 657         if (show_resolve_undo)
 658                 show_ru_info();
 659
 660         if (ps_matched) {
 661                 int bad;
 662                 bad = report_path_error(ps_matched, &pathspec, prefix);
 663                 if (bad)
 664                         fprintf(stderr, "Did you forget to 'git add'?\n");
 665
 666                 return bad ? 1 : 0;
 667         }
 668
 669         return 0;
 670 }