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 <dirent.h>
   9 #include <fnmatch.h>
  10
  11 #include "cache.h"
  12 #include "quote.h"
  13
  14 static int show_deleted = 0;
  15 static int show_cached = 0;
  16 static int show_others = 0;
  17 static int show_ignored = 0;
  18 static int show_stage = 0;
  19 static int show_unmerged = 0;
  20 static int show_modified = 0;
  21 static int show_killed = 0;
  22 static int show_other_directories = 0;
  23 static int hide_empty_directories = 0;
  24 static int show_valid_bit = 0;
  25 static int line_terminator = '\n';
  26
  27 static int prefix_len = 0, prefix_offset = 0;
  28 static const char *prefix = NULL;
  29 static const char **pathspec = NULL;
  30 static int error_unmatch = 0;
  31 static char *ps_matched = NULL;
  32
  33 static const char *tag_cached = "";
  34 static const char *tag_unmerged = "";
  35 static const char *tag_removed = "";
  36 static const char *tag_other = "";
  37 static const char *tag_killed = "";
  38 static const char *tag_modified = "";
  39
  40 static const char *exclude_per_dir = NULL;
  41
  42 /* We maintain three exclude pattern lists:
  43  * EXC_CMDL lists patterns explicitly given on the command line.
  44  * EXC_DIRS lists patterns obtained from per-directory ignore files.
  45  * EXC_FILE lists patterns from fallback ignore files.
  46  */
  47 #define EXC_CMDL 0
  48 #define EXC_DIRS 1
  49 #define EXC_FILE 2
  50 static struct exclude_list {
  51         int nr;
  52         int alloc;
  53         struct exclude {
  54                 const char *pattern;
  55                 const char *base;
  56                 int baselen;
  57         } **excludes;
  58 } exclude_list[3];
  59
  60 static void add_exclude(const char *string, const char *base,
  61                         int baselen, struct exclude_list *which)
  62 {
  63         struct exclude *x = xmalloc(sizeof (*x));
  64
  65         x->pattern = string;
  66         x->base = base;
  67         x->baselen = baselen;
  68         if (which->nr == which->alloc) {
  69                 which->alloc = alloc_nr(which->alloc);
  70                 which->excludes = realloc(which->excludes,
  71                                           which->alloc * sizeof(x));
  72         }
  73         which->excludes[which->nr++] = x;
  74 }
  75
  76 static int add_excludes_from_file_1(const char *fname,
  77                                     const char *base,
  78                                     int baselen,
  79                                     struct exclude_list *which)
  80 {
  81         int fd, i;
  82         long size;
  83         char *buf, *entry;
  84
  85         fd = open(fname, O_RDONLY);
  86         if (fd < 0)
  87                 goto err;
  88         size = lseek(fd, 0, SEEK_END);
  89         if (size < 0)
  90                 goto err;
  91         lseek(fd, 0, SEEK_SET);
  92         if (size == 0) {
  93                 close(fd);
  94                 return 0;
  95         }
  96         buf = xmalloc(size+1);
  97         if (read(fd, buf, size) != size)
  98                 goto err;
  99         close(fd);
 100
 101         buf[size++] = '\n';
 102         entry = buf;
 103         for (i = 0; i < size; i++) {
 104                 if (buf[i] == '\n') {
 105                         if (entry != buf + i && entry[0] != '#') {
 106                                 buf[i - (i && buf[i-1] == '\r')] = 0;
 107                                 add_exclude(entry, base, baselen, which);
 108                         }
 109                         entry = buf + i + 1;
 110                 }
 111         }
 112         return 0;
 113
 114  err:
 115         if (0 <= fd)
 116                 close(fd);
 117         return -1;
 118 }
 119
 120 static void add_excludes_from_file(const char *fname)
 121 {
 122         if (add_excludes_from_file_1(fname, "", 0,
 123                                      &exclude_list[EXC_FILE]) < 0)
 124                 die("cannot use %s as an exclude file", fname);
 125 }
 126
 127 static int push_exclude_per_directory(const char *base, int baselen)
 128 {
 129         char exclude_file[PATH_MAX];
 130         struct exclude_list *el = &exclude_list[EXC_DIRS];
 131         int current_nr = el->nr;
 132
 133         if (exclude_per_dir) {
 134                 memcpy(exclude_file, base, baselen);
 135                 strcpy(exclude_file + baselen, exclude_per_dir);
 136                 add_excludes_from_file_1(exclude_file, base, baselen, el);
 137         }
 138         return current_nr;
 139 }
 140
 141 static void pop_exclude_per_directory(int stk)
 142 {
 143         struct exclude_list *el = &exclude_list[EXC_DIRS];
 144
 145         while (stk < el->nr)
 146                 free(el->excludes[--el->nr]);
 147 }
 148
 149 /* Scan the list and let the last match determines the fate.
 150  * Return 1 for exclude, 0 for include and -1 for undecided.
 151  */
 152 static int excluded_1(const char *pathname,
 153                       int pathlen,
 154                       struct exclude_list *el)
 155 {
 156         int i;
 157
 158         if (el->nr) {
 159                 for (i = el->nr - 1; 0 <= i; i--) {
 160                         struct exclude *x = el->excludes[i];
 161                         const char *exclude = x->pattern;
 162                         int to_exclude = 1;
 163
 164                         if (*exclude == '!') {
 165                                 to_exclude = 0;
 166                                 exclude++;
 167                         }
 168
 169                         if (!strchr(exclude, '/')) {
 170                                 /* match basename */
 171                                 const char *basename = strrchr(pathname, '/');
 172                                 basename = (basename) ? basename+1 : pathname;
 173                                 if (fnmatch(exclude, basename, 0) == 0)
 174                                         return to_exclude;
 175                         }
 176                         else {
 177                                 /* match with FNM_PATHNAME:
 178                                  * exclude has base (baselen long) implicitly
 179                                  * in front of it.
 180                                  */
 181                                 int baselen = x->baselen;
 182                                 if (*exclude == '/')
 183                                         exclude++;
 184
 185                                 if (pathlen < baselen ||
 186                                     (baselen && pathname[baselen-1] != '/') ||
 187                                     strncmp(pathname, x->base, baselen))
 188                                     continue;
 189
 190                                 if (fnmatch(exclude, pathname+baselen,
 191                                             FNM_PATHNAME) == 0)
 192                                         return to_exclude;
 193                         }
 194                 }
 195         }
 196         return -1; /* undecided */
 197 }
 198
 199 static int excluded(const char *pathname)
 200 {
 201         int pathlen = strlen(pathname);
 202         int st;
 203
 204         for (st = EXC_CMDL; st <= EXC_FILE; st++) {
 205                 switch (excluded_1(pathname, pathlen, &exclude_list[st])) {
 206                 case 0:
 207                         return 0;
 208                 case 1:
 209                         return 1;
 210                 }
 211         }
 212         return 0;
 213 }
 214
 215 struct nond_on_fs {
 216         int len;
 217         char name[FLEX_ARRAY]; /* more */
 218 };
 219
 220 static struct nond_on_fs **dir;
 221 static int nr_dir;
 222 static int dir_alloc;
 223
 224 static void add_name(const char *pathname, int len)
 225 {
 226         struct nond_on_fs *ent;
 227
 228         if (cache_name_pos(pathname, len) >= 0)
 229                 return;
 230
 231         if (nr_dir == dir_alloc) {
 232                 dir_alloc = alloc_nr(dir_alloc);
 233                 dir = xrealloc(dir, dir_alloc*sizeof(ent));
 234         }
 235         ent = xmalloc(sizeof(*ent) + len + 1);
 236         ent->len = len;
 237         memcpy(ent->name, pathname, len);
 238         ent->name[len] = 0;
 239         dir[nr_dir++] = ent;
 240 }
 241
 242 static int dir_exists(const char *dirname, int len)
 243 {
 244         int pos = cache_name_pos(dirname, len);
 245         if (pos >= 0)
 246                 return 1;
 247         pos = -pos-1;
 248         if (pos >= active_nr) /* can't */
 249                 return 0;
 250         return !strncmp(active_cache[pos]->name, dirname, len);
 251 }
 252
 253 /*
 254  * Read a directory tree. We currently ignore anything but
 255  * directories, regular files and symlinks. That's because git
 256  * doesn't handle them at all yet. Maybe that will change some
 257  * day.
 258  *
 259  * Also, we ignore the name ".git" (even if it is not a directory).
 260  * That likely will not change.
 261  */
 262 static int read_directory(const char *path, const char *base, int baselen)
 263 {
 264         DIR *fdir = opendir(path);
 265         int contents = 0;
 266
 267         if (fdir) {
 268                 int exclude_stk;
 269                 struct dirent *de;
 270                 char fullname[MAXPATHLEN + 1];
 271                 memcpy(fullname, base, baselen);
 272
 273                 exclude_stk = push_exclude_per_directory(base, baselen);
 274
 275                 while ((de = readdir(fdir)) != NULL) {
 276                         int len;
 277
 278                         if ((de->d_name[0] == '.') &&
 279                             (de->d_name[1] == 0 ||
 280                              !strcmp(de->d_name + 1, ".") ||
 281                              !strcmp(de->d_name + 1, "git")))
 282                                 continue;
 283                         len = strlen(de->d_name);
 284                         memcpy(fullname + baselen, de->d_name, len+1);
 285                         if (excluded(fullname) != show_ignored) {
 286                                 if (!show_ignored || DTYPE(de) != DT_DIR) {
 287                                         continue;
 288                                 }
 289                         }
 290
 291                         switch (DTYPE(de)) {
 292                         struct stat st;
 293                         int subdir, rewind_base;
 294                         default:
 295                                 continue;
 296                         case DT_UNKNOWN:
 297                                 if (lstat(fullname, &st))
 298                                         continue;
 299                                 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 300                                         break;
 301                                 if (!S_ISDIR(st.st_mode))
 302                                         continue;
 303                                 /* fallthrough */
 304                         case DT_DIR:
 305                                 memcpy(fullname + baselen + len, "/", 2);
 306                                 len++;
 307                                 rewind_base = nr_dir;
 308                                 subdir = read_directory(fullname, fullname,
 309                                                         baselen + len);
 310                                 if (show_other_directories &&
 311                                     (subdir || !hide_empty_directories) &&
 312                                     !dir_exists(fullname, baselen + len)) {
 313                                         // Rewind the read subdirectory
 314                                         while (nr_dir > rewind_base)
 315                                                 free(dir[--nr_dir]);
 316                                         break;
 317                                 }
 318                                 contents += subdir;
 319                                 continue;
 320                         case DT_REG:
 321                         case DT_LNK:
 322                                 break;
 323                         }
 324                         add_name(fullname, baselen + len);
 325                         contents++;
 326                 }
 327                 closedir(fdir);
 328
 329                 pop_exclude_per_directory(exclude_stk);
 330         }
 331
 332         return contents;
 333 }
 334
 335 static int cmp_name(const void *p1, const void *p2)
 336 {
 337         const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
 338         const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
 339
 340         return cache_name_compare(e1->name, e1->len,
 341                                   e2->name, e2->len);
 342 }
 343
 344 /*
 345  * Match a pathspec against a filename. The first "len" characters
 346  * are the common prefix
 347  */
 348 static int match(const char **spec, char *ps_matched,
 349                  const char *filename, int len)
 350 {
 351         const char *m;
 352
 353         while ((m = *spec++) != NULL) {
 354                 int matchlen = strlen(m + len);
 355
 356                 if (!matchlen)
 357                         goto matched;
 358                 if (!strncmp(m + len, filename + len, matchlen)) {
 359                         if (m[len + matchlen - 1] == '/')
 360                                 goto matched;
 361                         switch (filename[len + matchlen]) {
 362                         case '/': case '\0':
 363                                 goto matched;
 364                         }
 365                 }
 366                 if (!fnmatch(m + len, filename + len, 0))
 367                         goto matched;
 368                 if (ps_matched)
 369                         ps_matched++;
 370                 continue;
 371         matched:
 372                 if (ps_matched)
 373                         *ps_matched = 1;
 374                 return 1;
 375         }
 376         return 0;
 377 }
 378
 379 static void show_dir_entry(const char *tag, struct nond_on_fs *ent)
 380 {
 381         int len = prefix_len;
 382         int offset = prefix_offset;
 383
 384         if (len >= ent->len)
 385                 die("git-ls-files: internal error - directory entry not superset of prefix");
 386
 387         if (pathspec && !match(pathspec, ps_matched, ent->name, len))
 388                 return;
 389
 390         fputs(tag, stdout);
 391         write_name_quoted("", 0, ent->name + offset, line_terminator, stdout);
 392         putchar(line_terminator);
 393 }
 394
 395 static void show_other_files(void)
 396 {
 397         int i;
 398         for (i = 0; i < nr_dir; i++) {
 399                 /* We should not have a matching entry, but we
 400                  * may have an unmerged entry for this path.
 401                  */
 402                 struct nond_on_fs *ent = dir[i];
 403                 int pos = cache_name_pos(ent->name, ent->len);
 404                 struct cache_entry *ce;
 405                 if (0 <= pos)
 406                         die("bug in show-other-files");
 407                 pos = -pos - 1;
 408                 if (pos < active_nr) {
 409                         ce = active_cache[pos];
 410                         if (ce_namelen(ce) == ent->len &&
 411                             !memcmp(ce->name, ent->name, ent->len))
 412                                 continue; /* Yup, this one exists unmerged */
 413                 }
 414                 show_dir_entry(tag_other, ent);
 415         }
 416 }
 417
 418 static void show_killed_files(void)
 419 {
 420         int i;
 421         for (i = 0; i < nr_dir; i++) {
 422                 struct nond_on_fs *ent = dir[i];
 423                 char *cp, *sp;
 424                 int pos, len, killed = 0;
 425
 426                 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 427                         sp = strchr(cp, '/');
 428                         if (!sp) {
 429                                 /* If ent->name is prefix of an entry in the
 430                                  * cache, it will be killed.
 431                                  */
 432                                 pos = cache_name_pos(ent->name, ent->len);
 433                                 if (0 <= pos)
 434                                         die("bug in show-killed-files");
 435                                 pos = -pos - 1;
 436                                 while (pos < active_nr &&
 437                                        ce_stage(active_cache[pos]))
 438                                         pos++; /* skip unmerged */
 439                                 if (active_nr <= pos)
 440                                         break;
 441                                 /* pos points at a name immediately after
 442                                  * ent->name in the cache.  Does it expect
 443                                  * ent->name to be a directory?
 444                                  */
 445                                 len = ce_namelen(active_cache[pos]);
 446                                 if ((ent->len < len) &&
 447                                     !strncmp(active_cache[pos]->name,
 448                                              ent->name, ent->len) &&
 449                                     active_cache[pos]->name[ent->len] == '/')
 450                                         killed = 1;
 451                                 break;
 452                         }
 453                         if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
 454                                 /* If any of the leading directories in
 455                                  * ent->name is registered in the cache,
 456                                  * ent->name will be killed.
 457                                  */
 458                                 killed = 1;
 459                                 break;
 460                         }
 461                 }
 462                 if (killed)
 463                         show_dir_entry(tag_killed, dir[i]);
 464         }
 465 }
 466
 467 static void show_ce_entry(const char *tag, struct cache_entry *ce)
 468 {
 469         int len = prefix_len;
 470         int offset = prefix_offset;
 471
 472         if (len >= ce_namelen(ce))
 473                 die("git-ls-files: internal error - cache entry not superset of prefix");
 474
 475         if (pathspec && !match(pathspec, ps_matched, ce->name, len))
 476                 return;
 477
 478         if (tag && *tag && show_valid_bit &&
 479             (ce->ce_flags & htons(CE_VALID))) {
 480                 static char alttag[4];
 481                 memcpy(alttag, tag, 3);
 482                 if (isalpha(tag[0]))
 483                         alttag[0] = tolower(tag[0]);
 484                 else if (tag[0] == '?')
 485                         alttag[0] = '!';
 486                 else {
 487                         alttag[0] = 'v';
 488                         alttag[1] = tag[0];
 489                         alttag[2] = ' ';
 490                         alttag[3] = 0;
 491                 }
 492                 tag = alttag;
 493         }
 494
 495         if (!show_stage) {
 496                 fputs(tag, stdout);
 497                 write_name_quoted("", 0, ce->name + offset,
 498                                   line_terminator, stdout);
 499                 putchar(line_terminator);
 500         }
 501         else {
 502                 printf("%s%06o %s %d\t",
 503                        tag,
 504                        ntohl(ce->ce_mode),
 505                        sha1_to_hex(ce->sha1),
 506                        ce_stage(ce));
 507                 write_name_quoted("", 0, ce->name + offset,
 508                                   line_terminator, stdout);
 509                 putchar(line_terminator);
 510         }
 511 }
 512
 513 static void show_files(void)
 514 {
 515         int i;
 516
 517         /* For cached/deleted files we don't need to even do the readdir */
 518         if (show_others || show_killed) {
 519                 const char *path = ".", *base = "";
 520                 int baselen = prefix_len;
 521
 522                 if (baselen) {
 523                         path = base = prefix;
 524                         if (exclude_per_dir) {
 525                                 char *p, *pp = xmalloc(baselen+1);
 526                                 memcpy(pp, prefix, baselen+1);
 527                                 p = pp;
 528                                 while (1) {
 529                                         char save = *p;
 530                                         *p = 0;
 531                                         push_exclude_per_directory(pp, p-pp);
 532                                         *p++ = save;
 533                                         if (!save)
 534                                                 break;
 535                                         p = strchr(p, '/');
 536                                         if (p)
 537                                                 p++;
 538                                         else
 539                                                 p = pp + baselen;
 540                                 }
 541                                 free(pp);
 542                         }
 543                 }
 544                 read_directory(path, base, baselen);
 545                 qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
 546                 if (show_others)
 547                         show_other_files();
 548                 if (show_killed)
 549                         show_killed_files();
 550         }
 551         if (show_cached | show_stage) {
 552                 for (i = 0; i < active_nr; i++) {
 553                         struct cache_entry *ce = active_cache[i];
 554                         if (excluded(ce->name) != show_ignored)
 555                                 continue;
 556                         if (show_unmerged && !ce_stage(ce))
 557                                 continue;
 558                         show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
 559                 }
 560         }
 561         if (show_deleted | show_modified) {
 562                 for (i = 0; i < active_nr; i++) {
 563                         struct cache_entry *ce = active_cache[i];
 564                         struct stat st;
 565                         int err;
 566                         if (excluded(ce->name) != show_ignored)
 567                                 continue;
 568                         err = lstat(ce->name, &st);
 569                         if (show_deleted && err)
 570                                 show_ce_entry(tag_removed, ce);
 571                         if (show_modified && ce_modified(ce, &st, 0))
 572                                 show_ce_entry(tag_modified, ce);
 573                 }
 574         }
 575 }
 576
 577 /*
 578  * Prune the index to only contain stuff starting with "prefix"
 579  */
 580 static void prune_cache(void)
 581 {
 582         int pos = cache_name_pos(prefix, prefix_len);
 583         unsigned int first, last;
 584
 585         if (pos < 0)
 586                 pos = -pos-1;
 587         active_cache += pos;
 588         active_nr -= pos;
 589         first = 0;
 590         last = active_nr;
 591         while (last > first) {
 592                 int next = (last + first) >> 1;
 593                 struct cache_entry *ce = active_cache[next];
 594                 if (!strncmp(ce->name, prefix, prefix_len)) {
 595                         first = next+1;
 596                         continue;
 597                 }
 598                 last = next;
 599         }
 600         active_nr = last;
 601 }
 602
 603 static void verify_pathspec(void)
 604 {
 605         const char **p, *n, *prev;
 606         char *real_prefix;
 607         unsigned long max;
 608
 609         prev = NULL;
 610         max = PATH_MAX;
 611         for (p = pathspec; (n = *p) != NULL; p++) {
 612                 int i, len = 0;
 613                 for (i = 0; i < max; i++) {
 614                         char c = n[i];
 615                         if (prev && prev[i] != c)
 616                                 break;
 617                         if (!c || c == '*' || c == '?')
 618                                 break;
 619                         if (c == '/')
 620                                 len = i+1;
 621                 }
 622                 prev = n;
 623                 if (len < max) {
 624                         max = len;
 625                         if (!max)
 626                                 break;
 627                 }
 628         }
 629
 630         if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
 631                 die("git-ls-files: cannot generate relative filenames containing '..'");
 632
 633         real_prefix = NULL;
 634         prefix_len = max;
 635         if (max) {
 636                 real_prefix = xmalloc(max + 1);
 637                 memcpy(real_prefix, prev, max);
 638                 real_prefix[max] = 0;
 639         }
 640         prefix = real_prefix;
 641 }
 642
 643 static const char ls_files_usage[] =
 644         "git-ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* "
 645         "[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
 646         "[ --exclude-per-directory=<filename> ] [--full-name] [--] [<file>]*";
 647
 648 int main(int argc, const char **argv)
 649 {
 650         int i;
 651         int exc_given = 0;
 652
 653         prefix = setup_git_directory();
 654         if (prefix)
 655                 prefix_offset = strlen(prefix);
 656         git_config(git_default_config);
 657
 658         for (i = 1; i < argc; i++) {
 659                 const char *arg = argv[i];
 660
 661                 if (!strcmp(arg, "--")) {
 662                         i++;
 663                         break;
 664                 }
 665                 if (!strcmp(arg, "-z")) {
 666                         line_terminator = 0;
 667                         continue;
 668                 }
 669                 if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) {
 670                         tag_cached = "H ";
 671                         tag_unmerged = "M ";
 672                         tag_removed = "R ";
 673                         tag_modified = "C ";
 674                         tag_other = "? ";
 675                         tag_killed = "K ";
 676                         if (arg[1] == 'v')
 677                                 show_valid_bit = 1;
 678                         continue;
 679                 }
 680                 if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
 681                         show_cached = 1;
 682                         continue;
 683                 }
 684                 if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
 685                         show_deleted = 1;
 686                         continue;
 687                 }
 688                 if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) {
 689                         show_modified = 1;
 690                         continue;
 691                 }
 692                 if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
 693                         show_others = 1;
 694                         continue;
 695                 }
 696                 if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
 697                         show_ignored = 1;
 698                         continue;
 699                 }
 700                 if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
 701                         show_stage = 1;
 702                         continue;
 703                 }
 704                 if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
 705                         show_killed = 1;
 706                         continue;
 707                 }
 708                 if (!strcmp(arg, "--directory")) {
 709                         show_other_directories = 1;
 710                         continue;
 711                 }
 712                 if (!strcmp(arg, "--no-empty-directory")) {
 713                         hide_empty_directories = 1;
 714                         continue;
 715                 }
 716                 if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
 717                         /* There's no point in showing unmerged unless
 718                          * you also show the stage information.
 719                          */
 720                         show_stage = 1;
 721                         show_unmerged = 1;
 722                         continue;
 723                 }
 724                 if (!strcmp(arg, "-x") && i+1 < argc) {
 725                         exc_given = 1;
 726                         add_exclude(argv[++i], "", 0, &exclude_list[EXC_CMDL]);
 727                         continue;
 728                 }
 729                 if (!strncmp(arg, "--exclude=", 10)) {
 730                         exc_given = 1;
 731                         add_exclude(arg+10, "", 0, &exclude_list[EXC_CMDL]);
 732                         continue;
 733                 }
 734                 if (!strcmp(arg, "-X") && i+1 < argc) {
 735                         exc_given = 1;
 736                         add_excludes_from_file(argv[++i]);
 737                         continue;
 738                 }
 739                 if (!strncmp(arg, "--exclude-from=", 15)) {
 740                         exc_given = 1;
 741                         add_excludes_from_file(arg+15);
 742                         continue;
 743                 }
 744                 if (!strncmp(arg, "--exclude-per-directory=", 24)) {
 745                         exc_given = 1;
 746                         exclude_per_dir = arg + 24;
 747                         continue;
 748                 }
 749                 if (!strcmp(arg, "--full-name")) {
 750                         prefix_offset = 0;
 751                         continue;
 752                 }
 753                 if (!strcmp(arg, "--error-unmatch")) {
 754                         error_unmatch = 1;
 755                         continue;
 756                 }
 757                 if (*arg == '-')
 758                         usage(ls_files_usage);
 759                 break;
 760         }
 761
 762         pathspec = get_pathspec(prefix, argv + i);
 763
 764         /* Verify that the pathspec matches the prefix */
 765         if (pathspec)
 766                 verify_pathspec();
 767
 768         /* Treat unmatching pathspec elements as errors */
 769         if (pathspec && error_unmatch) {
 770                 int num;
 771                 for (num = 0; pathspec[num]; num++)
 772                         ;
 773                 ps_matched = xcalloc(1, num);
 774         }
 775
 776         if (show_ignored && !exc_given) {
 777                 fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
 778                         argv[0]);
 779                 exit(1);
 780         }
 781
 782         /* With no flags, we default to showing the cached files */
 783         if (!(show_stage | show_deleted | show_others | show_unmerged |
 784               show_killed | show_modified))
 785                 show_cached = 1;
 786
 787         read_cache();
 788         if (prefix)
 789                 prune_cache();
 790         show_files();
 791
 792         if (ps_matched) {
 793                 /* We need to make sure all pathspec matched otherwise
 794                  * it is an error.
 795                  */
 796                 int num, errors = 0;
 797                 for (num = 0; pathspec[num]; num++) {
 798                         if (ps_matched[num])
 799                                 continue;
 800                         error("pathspec '%s' did not match any.",
 801                               pathspec[num] + prefix_offset);
 802                         errors++;
 803                 }
 804                 return errors ? 1 : 0;
 805         }
 806
 807         return 0;
 808 }