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
  23 static int abbrev;
  24 static int show_deleted;
  25 static int show_cached;
  26 static int show_others;
  27 static int show_stage;
  28 static int show_unmerged;
  29 static int show_resolve_undo;
  30 static int show_modified;
  31 static int show_killed;
  32 static int show_valid_bit;
  33 static int line_terminator = '\n';
  34 static int debug_mode;
  35 static int show_eol;
  36 static int recurse_submodules;
  37
  38 static const char *prefix;
  39 static int max_prefix_len;
  40 static int prefix_len;
  41 static struct pathspec pathspec;
  42 static int error_unmatch;
  43 static char *ps_matched;
  44 static const char *with_tree;
  45 static int exc_given;
  46 static int exclude_args;
  47
  48 static const char *tag_cached = "";
  49 static const char *tag_unmerged = "";
  50 static const char *tag_removed = "";
  51 static const char *tag_other = "";
  52 static const char *tag_killed = "";
  53 static const char *tag_modified = "";
  54 static const char *tag_skip_worktree = "";
  55 static const char *tag_resolve_undo = "";
  56
  57 static void write_eolinfo(const struct index_state *istate,
  58                           const struct cache_entry *ce, const char *path)
  59 {
  60         if (show_eol) {
  61                 struct stat st;
  62                 const char *i_txt = "";
  63                 const char *w_txt = "";
  64                 const char *a_txt = get_convert_attr_ascii(path);
  65                 if (ce && S_ISREG(ce->ce_mode))
  66                         i_txt = get_cached_convert_stats_ascii(istate,
  67                                                                ce->name);
  68                 if (!lstat(path, &st) && S_ISREG(st.st_mode))
  69                         w_txt = get_wt_convert_stats_ascii(path);
  70                 printf("i/%-5s w/%-5s attr/%-17s\t", i_txt, w_txt, a_txt);
  71         }
  72 }
  73
  74 static void write_name(const char *name)
  75 {
  76         /*
  77          * With "--full-name", prefix_len=0; this caller needs to pass
  78          * an empty string in that case (a NULL is good for "").
  79          */
  80         write_name_quoted_relative(name, prefix_len ? prefix : NULL,
  81                                    stdout, line_terminator);
  82 }
  83
  84 static const char *get_tag(const struct cache_entry *ce, const char *tag)
  85 {
  86         static char alttag[4];
  87
  88         if (tag && *tag && show_valid_bit && (ce->ce_flags & CE_VALID)) {
  89                 memcpy(alttag, tag, 3);
  90
  91                 if (isalpha(tag[0])) {
  92                         alttag[0] = tolower(tag[0]);
  93                 } else if (tag[0] == '?') {
  94                         alttag[0] = '!';
  95                 } else {
  96                         alttag[0] = 'v';
  97                         alttag[1] = tag[0];
  98                         alttag[2] = ' ';
  99                         alttag[3] = 0;
 100                 }
 101
 102                 tag = alttag;
 103         }
 104
 105         return tag;
 106 }
 107
 108 static void print_debug(const struct cache_entry *ce)
 109 {
 110         if (debug_mode) {
 111                 const struct stat_data *sd = &ce->ce_stat_data;
 112
 113                 printf("  ctime: %d:%d\n", sd->sd_ctime.sec, sd->sd_ctime.nsec);
 114                 printf("  mtime: %d:%d\n", sd->sd_mtime.sec, sd->sd_mtime.nsec);
 115                 printf("  dev: %d\tino: %d\n", sd->sd_dev, sd->sd_ino);
 116                 printf("  uid: %d\tgid: %d\n", sd->sd_uid, sd->sd_gid);
 117                 printf("  size: %d\tflags: %x\n", sd->sd_size, ce->ce_flags);
 118         }
 119 }
 120
 121 static void show_dir_entry(const char *tag, struct dir_entry *ent)
 122 {
 123         int len = max_prefix_len;
 124
 125         if (len > ent->len)
 126                 die("git ls-files: internal error - directory entry not superset of prefix");
 127
 128         if (!dir_path_match(ent, &pathspec, len, ps_matched))
 129                 return;
 130
 131         fputs(tag, stdout);
 132         write_eolinfo(NULL, NULL, ent->name);
 133         write_name(ent->name);
 134 }
 135
 136 static void show_other_files(const struct index_state *istate,
 137                              const struct dir_struct *dir)
 138 {
 139         int i;
 140
 141         for (i = 0; i < dir->nr; i++) {
 142                 struct dir_entry *ent = dir->entries[i];
 143                 if (!index_name_is_other(istate, ent->name, ent->len))
 144                         continue;
 145                 show_dir_entry(tag_other, ent);
 146         }
 147 }
 148
 149 static void show_killed_files(const struct index_state *istate,
 150                               const struct dir_struct *dir)
 151 {
 152         int i;
 153         for (i = 0; i < dir->nr; i++) {
 154                 struct dir_entry *ent = dir->entries[i];
 155                 char *cp, *sp;
 156                 int pos, len, killed = 0;
 157
 158                 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 159                         sp = strchr(cp, '/');
 160                         if (!sp) {
 161                                 /* If ent->name is prefix of an entry in the
 162                                  * cache, it will be killed.
 163                                  */
 164                                 pos = index_name_pos(istate, ent->name, ent->len);
 165                                 if (0 <= pos)
 166                                         die("BUG: killed-file %.*s not found",
 167                                                 ent->len, ent->name);
 168                                 pos = -pos - 1;
 169                                 while (pos < istate->cache_nr &&
 170                                        ce_stage(istate->cache[pos]))
 171                                         pos++; /* skip unmerged */
 172                                 if (istate->cache_nr <= pos)
 173                                         break;
 174                                 /* pos points at a name immediately after
 175                                  * ent->name in the cache.  Does it expect
 176                                  * ent->name to be a directory?
 177                                  */
 178                                 len = ce_namelen(istate->cache[pos]);
 179                                 if ((ent->len < len) &&
 180                                     !strncmp(istate->cache[pos]->name,
 181                                              ent->name, ent->len) &&
 182                                     istate->cache[pos]->name[ent->len] == '/')
 183                                         killed = 1;
 184                                 break;
 185                         }
 186                         if (0 <= index_name_pos(istate, ent->name, sp - ent->name)) {
 187                                 /* If any of the leading directories in
 188                                  * ent->name is registered in the cache,
 189                                  * ent->name will be killed.
 190                                  */
 191                                 killed = 1;
 192                                 break;
 193                         }
 194                 }
 195                 if (killed)
 196                         show_dir_entry(tag_killed, dir->entries[i]);
 197         }
 198 }
 199
 200 static void show_files(struct repository *repo, struct dir_struct *dir);
 201
 202 static void show_submodule(struct repository *superproject,
 203                            struct dir_struct *dir, const char *path)
 204 {
 205         struct repository submodule;
 206
 207         if (repo_submodule_init(&submodule, superproject, path))
 208                 return;
 209
 210         if (repo_read_index(&submodule) < 0)
 211                 die("index file corrupt");
 212
 213         repo_read_gitmodules(&submodule);
 214
 215         show_files(&submodule, dir);
 216
 217         repo_clear(&submodule);
 218 }
 219
 220 static void show_ce(struct repository *repo, struct dir_struct *dir,
 221                     const struct cache_entry *ce, const char *fullname,
 222                     const char *tag)
 223 {
 224         if (max_prefix_len > strlen(fullname))
 225                 die("git ls-files: internal error - cache entry not superset of prefix");
 226
 227         if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
 228             is_submodule_active(repo, ce->name)) {
 229                 show_submodule(repo, dir, ce->name);
 230         } else if (match_pathspec(&pathspec, fullname, strlen(fullname),
 231                                   max_prefix_len, ps_matched,
 232                                   S_ISDIR(ce->ce_mode) ||
 233                                   S_ISGITLINK(ce->ce_mode))) {
 234                 tag = get_tag(ce, tag);
 235
 236                 if (!show_stage) {
 237                         fputs(tag, stdout);
 238                 } else {
 239                         printf("%s%06o %s %d\t",
 240                                tag,
 241                                ce->ce_mode,
 242                                find_unique_abbrev(ce->oid.hash, abbrev),
 243                                ce_stage(ce));
 244                 }
 245                 write_eolinfo(repo->index, ce, fullname);
 246                 write_name(fullname);
 247                 print_debug(ce);
 248         }
 249 }
 250
 251 static void show_ru_info(const struct index_state *istate)
 252 {
 253         struct string_list_item *item;
 254
 255         if (!istate->resolve_undo)
 256                 return;
 257
 258         for_each_string_list_item(item, istate->resolve_undo) {
 259                 const char *path = item->string;
 260                 struct resolve_undo_info *ui = item->util;
 261                 int i, len;
 262
 263                 len = strlen(path);
 264                 if (len < max_prefix_len)
 265                         continue; /* outside of the prefix */
 266                 if (!match_pathspec(&pathspec, path, len,
 267                                     max_prefix_len, ps_matched, 0))
 268                         continue; /* uninterested */
 269                 for (i = 0; i < 3; i++) {
 270                         if (!ui->mode[i])
 271                                 continue;
 272                         printf("%s%06o %s %d\t", tag_resolve_undo, ui->mode[i],
 273                                find_unique_abbrev(ui->sha1[i], abbrev),
 274                                i + 1);
 275                         write_name(path);
 276                 }
 277         }
 278 }
 279
 280 static int ce_excluded(struct dir_struct *dir, struct index_state *istate,
 281                        const char *fullname, const struct cache_entry *ce)
 282 {
 283         int dtype = ce_to_dtype(ce);
 284         return is_excluded(dir, istate, fullname, &dtype);
 285 }
 286
 287 static void construct_fullname(struct strbuf *out, const struct repository *repo,
 288                                const struct cache_entry *ce)
 289 {
 290         strbuf_reset(out);
 291         if (repo->submodule_prefix)
 292                 strbuf_addstr(out, repo->submodule_prefix);
 293         strbuf_addstr(out, ce->name);
 294 }
 295
 296 static void show_files(struct repository *repo, struct dir_struct *dir)
 297 {
 298         int i;
 299         struct strbuf fullname = STRBUF_INIT;
 300
 301         /* For cached/deleted files we don't need to even do the readdir */
 302         if (show_others || show_killed) {
 303                 if (!show_others)
 304                         dir->flags |= DIR_COLLECT_KILLED_ONLY;
 305                 fill_directory(dir, repo->index, &pathspec);
 306                 if (show_others)
 307                         show_other_files(repo->index, dir);
 308                 if (show_killed)
 309                         show_killed_files(repo->index, dir);
 310         }
 311         if (show_cached || show_stage) {
 312                 for (i = 0; i < repo->index->cache_nr; i++) {
 313                         const struct cache_entry *ce = repo->index->cache[i];
 314
 315                         construct_fullname(&fullname, repo, ce);
 316
 317                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 318                             !ce_excluded(dir, repo->index, fullname.buf, ce))
 319                                 continue;
 320                         if (show_unmerged && !ce_stage(ce))
 321                                 continue;
 322                         if (ce->ce_flags & CE_UPDATE)
 323                                 continue;
 324                         show_ce(repo, dir, ce, fullname.buf,
 325                                 ce_stage(ce) ? tag_unmerged :
 326                                 (ce_skip_worktree(ce) ? tag_skip_worktree :
 327                                  tag_cached));
 328                 }
 329         }
 330         if (show_deleted || show_modified) {
 331                 for (i = 0; i < repo->index->cache_nr; i++) {
 332                         const struct cache_entry *ce = repo->index->cache[i];
 333                         struct stat st;
 334                         int err;
 335
 336                         construct_fullname(&fullname, repo, ce);
 337
 338                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 339                             !ce_excluded(dir, repo->index, fullname.buf, ce))
 340                                 continue;
 341                         if (ce->ce_flags & CE_UPDATE)
 342                                 continue;
 343                         if (ce_skip_worktree(ce))
 344                                 continue;
 345                         err = lstat(fullname.buf, &st);
 346                         if (show_deleted && err)
 347                                 show_ce(repo, dir, ce, fullname.buf, tag_removed);
 348                         if (show_modified && ie_modified(repo->index, ce, &st, 0))
 349                                 show_ce(repo, dir, ce, fullname.buf, tag_modified);
 350                 }
 351         }
 352
 353         strbuf_release(&fullname);
 354 }
 355
 356 /*
 357  * Prune the index to only contain stuff starting with "prefix"
 358  */
 359 static void prune_index(struct index_state *istate,
 360                         const char *prefix, size_t prefixlen)
 361 {
 362         int pos;
 363         unsigned int first, last;
 364
 365         if (!prefix || !istate->cache_nr)
 366                 return;
 367         pos = index_name_pos(istate, prefix, prefixlen);
 368         if (pos < 0)
 369                 pos = -pos-1;
 370         first = pos;
 371         last = istate->cache_nr;
 372         while (last > first) {
 373                 int next = (last + first) >> 1;
 374                 const struct cache_entry *ce = istate->cache[next];
 375                 if (!strncmp(ce->name, prefix, prefixlen)) {
 376                         first = next+1;
 377                         continue;
 378                 }
 379                 last = next;
 380         }
 381         MOVE_ARRAY(istate->cache, istate->cache + pos, last - pos);
 382         istate->cache_nr = last - pos;
 383 }
 384
 385 static int get_common_prefix_len(const char *common_prefix)
 386 {
 387         int common_prefix_len;
 388
 389         if (!common_prefix)
 390                 return 0;
 391
 392         common_prefix_len = strlen(common_prefix);
 393
 394         /*
 395          * If the prefix has a trailing slash, strip it so that submodules wont
 396          * be pruned from the index.
 397          */
 398         if (common_prefix[common_prefix_len - 1] == '/')
 399                 common_prefix_len--;
 400
 401         return common_prefix_len;
 402 }
 403
 404 /*
 405  * Read the tree specified with --with-tree option
 406  * (typically, HEAD) into stage #1 and then
 407  * squash them down to stage #0.  This is used for
 408  * --error-unmatch to list and check the path patterns
 409  * that were given from the command line.  We are not
 410  * going to write this index out.
 411  */
 412 void overlay_tree_on_index(struct index_state *istate,
 413                            const char *tree_name, const char *prefix)
 414 {
 415         struct tree *tree;
 416         struct object_id oid;
 417         struct pathspec pathspec;
 418         struct cache_entry *last_stage0 = NULL;
 419         int i;
 420
 421         if (get_oid(tree_name, &oid))
 422                 die("tree-ish %s not found.", tree_name);
 423         tree = parse_tree_indirect(&oid);
 424         if (!tree)
 425                 die("bad tree-ish %s", tree_name);
 426
 427         /* Hoist the unmerged entries up to stage #3 to make room */
 428         for (i = 0; i < istate->cache_nr; i++) {
 429                 struct cache_entry *ce = istate->cache[i];
 430                 if (!ce_stage(ce))
 431                         continue;
 432                 ce->ce_flags |= CE_STAGEMASK;
 433         }
 434
 435         if (prefix) {
 436                 static const char *(matchbuf[1]);
 437                 matchbuf[0] = NULL;
 438                 parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC,
 439                                PATHSPEC_PREFER_CWD, prefix, matchbuf);
 440         } else
 441                 memset(&pathspec, 0, sizeof(pathspec));
 442         if (read_tree(tree, 1, &pathspec, istate))
 443                 die("unable to read tree entries %s", tree_name);
 444
 445         for (i = 0; i < istate->cache_nr; i++) {
 446                 struct cache_entry *ce = istate->cache[i];
 447                 switch (ce_stage(ce)) {
 448                 case 0:
 449                         last_stage0 = ce;
 450                         /* fallthru */
 451                 default:
 452                         continue;
 453                 case 1:
 454                         /*
 455                          * If there is stage #0 entry for this, we do not
 456                          * need to show it.  We use CE_UPDATE bit to mark
 457                          * such an entry.
 458                          */
 459                         if (last_stage0 &&
 460                             !strcmp(last_stage0->name, ce->name))
 461                                 ce->ce_flags |= CE_UPDATE;
 462                 }
 463         }
 464 }
 465
 466 static const char * const ls_files_usage[] = {
 467         N_("git ls-files [<options>] [<file>...]"),
 468         NULL
 469 };
 470
 471 static int option_parse_exclude(const struct option *opt,
 472                                 const char *arg, int unset)
 473 {
 474         struct string_list *exclude_list = opt->value;
 475
 476         exc_given = 1;
 477         string_list_append(exclude_list, arg);
 478
 479         return 0;
 480 }
 481
 482 static int option_parse_exclude_from(const struct option *opt,
 483                                      const char *arg, int unset)
 484 {
 485         struct dir_struct *dir = opt->value;
 486
 487         exc_given = 1;
 488         add_excludes_from_file(dir, arg);
 489
 490         return 0;
 491 }
 492
 493 static int option_parse_exclude_standard(const struct option *opt,
 494                                          const char *arg, int unset)
 495 {
 496         struct dir_struct *dir = opt->value;
 497
 498         exc_given = 1;
 499         setup_standard_excludes(dir);
 500
 501         return 0;
 502 }
 503
 504 int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 505 {
 506         int require_work_tree = 0, show_tag = 0, i;
 507         const char *max_prefix;
 508         struct dir_struct dir;
 509         struct exclude_list *el;
 510         struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 511         struct option builtin_ls_files_options[] = {
 512                 /* Think twice before adding "--nul" synonym to this */
 513                 OPT_SET_INT('z', NULL, &line_terminator,
 514                         N_("paths are separated with NUL character"), '\0'),
 515                 OPT_BOOL('t', NULL, &show_tag,
 516                         N_("identify the file status with tags")),
 517                 OPT_BOOL('v', NULL, &show_valid_bit,
 518                         N_("use lowercase letters for 'assume unchanged' files")),
 519                 OPT_BOOL('c', "cached", &show_cached,
 520                         N_("show cached files in the output (default)")),
 521                 OPT_BOOL('d', "deleted", &show_deleted,
 522                         N_("show deleted files in the output")),
 523                 OPT_BOOL('m', "modified", &show_modified,
 524                         N_("show modified files in the output")),
 525                 OPT_BOOL('o', "others", &show_others,
 526                         N_("show other files in the output")),
 527                 OPT_BIT('i', "ignored", &dir.flags,
 528                         N_("show ignored files in the output"),
 529                         DIR_SHOW_IGNORED),
 530                 OPT_BOOL('s', "stage", &show_stage,
 531                         N_("show staged contents' object name in the output")),
 532                 OPT_BOOL('k', "killed", &show_killed,
 533                         N_("show files on the filesystem that need to be removed")),
 534                 OPT_BIT(0, "directory", &dir.flags,
 535                         N_("show 'other' directories' names only"),
 536                         DIR_SHOW_OTHER_DIRECTORIES),
 537                 OPT_BOOL(0, "eol", &show_eol, N_("show line endings of files")),
 538                 OPT_NEGBIT(0, "empty-directory", &dir.flags,
 539                         N_("don't show empty directories"),
 540                         DIR_HIDE_EMPTY_DIRECTORIES),
 541                 OPT_BOOL('u', "unmerged", &show_unmerged,
 542                         N_("show unmerged files in the output")),
 543                 OPT_BOOL(0, "resolve-undo", &show_resolve_undo,
 544                             N_("show resolve-undo information")),
 545                 { OPTION_CALLBACK, 'x', "exclude", &exclude_list, N_("pattern"),
 546                         N_("skip files matching pattern"),
 547                         0, option_parse_exclude },
 548                 { OPTION_CALLBACK, 'X', "exclude-from", &dir, N_("file"),
 549                         N_("exclude patterns are read from <file>"),
 550                         0, option_parse_exclude_from },
 551                 OPT_STRING(0, "exclude-per-directory", &dir.exclude_per_dir, N_("file"),
 552                         N_("read additional per-directory exclude patterns in <file>")),
 553                 { OPTION_CALLBACK, 0, "exclude-standard", &dir, NULL,
 554                         N_("add the standard git exclusions"),
 555                         PARSE_OPT_NOARG, option_parse_exclude_standard },
 556                 { OPTION_SET_INT, 0, "full-name", &prefix_len, NULL,
 557                         N_("make the output relative to the project top directory"),
 558                         PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL },
 559                 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
 560                         N_("recurse through submodules")),
 561                 OPT_BOOL(0, "error-unmatch", &error_unmatch,
 562                         N_("if any <file> is not in the index, treat this as an error")),
 563                 OPT_STRING(0, "with-tree", &with_tree, N_("tree-ish"),
 564                         N_("pretend that paths removed since <tree-ish> are still present")),
 565                 OPT__ABBREV(&abbrev),
 566                 OPT_BOOL(0, "debug", &debug_mode, N_("show debugging data")),
 567                 OPT_END()
 568         };
 569
 570         if (argc == 2 && !strcmp(argv[1], "-h"))
 571                 usage_with_options(ls_files_usage, builtin_ls_files_options);
 572
 573         memset(&dir, 0, sizeof(dir));
 574         prefix = cmd_prefix;
 575         if (prefix)
 576                 prefix_len = strlen(prefix);
 577         git_config(git_default_config, NULL);
 578
 579         if (repo_read_index(the_repository) < 0)
 580                 die("index file corrupt");
 581
 582         argc = parse_options(argc, argv, prefix, builtin_ls_files_options,
 583                         ls_files_usage, 0);
 584         el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 585         for (i = 0; i < exclude_list.nr; i++) {
 586                 add_exclude(exclude_list.items[i].string, "", 0, el, --exclude_args);
 587         }
 588         if (show_tag || show_valid_bit) {
 589                 tag_cached = "H ";
 590                 tag_unmerged = "M ";
 591                 tag_removed = "R ";
 592                 tag_modified = "C ";
 593                 tag_other = "? ";
 594                 tag_killed = "K ";
 595                 tag_skip_worktree = "S ";
 596                 tag_resolve_undo = "U ";
 597         }
 598         if (show_modified || show_others || show_deleted || (dir.flags & DIR_SHOW_IGNORED) || show_killed)
 599                 require_work_tree = 1;
 600         if (show_unmerged)
 601                 /*
 602                  * There's no point in showing unmerged unless
 603                  * you also show the stage information.
 604                  */
 605                 show_stage = 1;
 606         if (dir.exclude_per_dir)
 607                 exc_given = 1;
 608
 609         if (require_work_tree && !is_inside_work_tree())
 610                 setup_work_tree();
 611
 612         if (recurse_submodules)
 613                 repo_read_gitmodules(the_repository);
 614
 615         if (recurse_submodules &&
 616             (show_stage || show_deleted || show_others || show_unmerged ||
 617              show_killed || show_modified || show_resolve_undo || with_tree))
 618                 die("ls-files --recurse-submodules unsupported mode");
 619
 620         if (recurse_submodules && error_unmatch)
 621                 die("ls-files --recurse-submodules does not support "
 622                     "--error-unmatch");
 623
 624         parse_pathspec(&pathspec, 0,
 625                        PATHSPEC_PREFER_CWD,
 626                        prefix, argv);
 627
 628         /*
 629          * Find common prefix for all pathspec's
 630          * This is used as a performance optimization which unfortunately cannot
 631          * be done when recursing into submodules because when a pathspec is
 632          * given which spans repository boundaries you can't simply remove the
 633          * submodule entry because the pathspec may match something inside the
 634          * submodule.
 635          */
 636         if (recurse_submodules)
 637                 max_prefix = NULL;
 638         else
 639                 max_prefix = common_prefix(&pathspec);
 640         max_prefix_len = get_common_prefix_len(max_prefix);
 641
 642         prune_index(the_repository->index, max_prefix, max_prefix_len);
 643
 644         /* Treat unmatching pathspec elements as errors */
 645         if (pathspec.nr && error_unmatch)
 646                 ps_matched = xcalloc(pathspec.nr, 1);
 647
 648         if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given)
 649                 die("ls-files --ignored needs some exclude pattern");
 650
 651         /* With no flags, we default to showing the cached files */
 652         if (!(show_stage || show_deleted || show_others || show_unmerged ||
 653               show_killed || show_modified || show_resolve_undo))
 654                 show_cached = 1;
 655
 656         if (with_tree) {
 657                 /*
 658                  * Basic sanity check; show-stages and show-unmerged
 659                  * would not make any sense with this option.
 660                  */
 661                 if (show_stage || show_unmerged)
 662                         die("ls-files --with-tree is incompatible with -s or -u");
 663                 overlay_tree_on_index(the_repository->index, with_tree, max_prefix);
 664         }
 665
 666         show_files(the_repository, &dir);
 667
 668         if (show_resolve_undo)
 669                 show_ru_info(the_repository->index);
 670
 671         if (ps_matched) {
 672                 int bad;
 673                 bad = report_path_error(ps_matched, &pathspec, prefix);
 674                 if (bad)
 675                         fprintf(stderr, "Did you forget to 'git add'?\n");
 676
 677                 return bad ? 1 : 0;
 678         }
 679
 680         return 0;
 681 }