ls-files.con commit Elaborate on why ':' is a bad idea in a ref name. (87a56cd)
   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
  14static int abbrev = 0;
  15static int show_deleted = 0;
  16static int show_cached = 0;
  17static int show_others = 0;
  18static int show_ignored = 0;
  19static int show_stage = 0;
  20static int show_unmerged = 0;
  21static int show_modified = 0;
  22static int show_killed = 0;
  23static int show_other_directories = 0;
  24static int hide_empty_directories = 0;
  25static int show_valid_bit = 0;
  26static int line_terminator = '\n';
  27
  28static int prefix_len = 0, prefix_offset = 0;
  29static const char *prefix = NULL;
  30static const char **pathspec = NULL;
  31static int error_unmatch = 0;
  32static char *ps_matched = NULL;
  33
  34static const char *tag_cached = "";
  35static const char *tag_unmerged = "";
  36static const char *tag_removed = "";
  37static const char *tag_other = "";
  38static const char *tag_killed = "";
  39static const char *tag_modified = "";
  40
  41static const char *exclude_per_dir = NULL;
  42
  43/* We maintain three exclude pattern lists:
  44 * EXC_CMDL lists patterns explicitly given on the command line.
  45 * EXC_DIRS lists patterns obtained from per-directory ignore files.
  46 * EXC_FILE lists patterns from fallback ignore files.
  47 */
  48#define EXC_CMDL 0
  49#define EXC_DIRS 1
  50#define EXC_FILE 2
  51static struct exclude_list {
  52        int nr;
  53        int alloc;
  54        struct exclude {
  55                const char *pattern;
  56                const char *base;
  57                int baselen;
  58        } **excludes;
  59} exclude_list[3];
  60
  61static void add_exclude(const char *string, const char *base,
  62                        int baselen, struct exclude_list *which)
  63{
  64        struct exclude *x = xmalloc(sizeof (*x));
  65
  66        x->pattern = string;
  67        x->base = base;
  68        x->baselen = baselen;
  69        if (which->nr == which->alloc) {
  70                which->alloc = alloc_nr(which->alloc);
  71                which->excludes = realloc(which->excludes,
  72                                          which->alloc * sizeof(x));
  73        }
  74        which->excludes[which->nr++] = x;
  75}
  76
  77static int add_excludes_from_file_1(const char *fname,
  78                                    const char *base,
  79                                    int baselen,
  80                                    struct exclude_list *which)
  81{
  82        int fd, i;
  83        long size;
  84        char *buf, *entry;
  85
  86        fd = open(fname, O_RDONLY);
  87        if (fd < 0)
  88                goto err;
  89        size = lseek(fd, 0, SEEK_END);
  90        if (size < 0)
  91                goto err;
  92        lseek(fd, 0, SEEK_SET);
  93        if (size == 0) {
  94                close(fd);
  95                return 0;
  96        }
  97        buf = xmalloc(size+1);
  98        if (read(fd, buf, size) != size)
  99                goto err;
 100        close(fd);
 101
 102        buf[size++] = '\n';
 103        entry = buf;
 104        for (i = 0; i < size; i++) {
 105                if (buf[i] == '\n') {
 106                        if (entry != buf + i && entry[0] != '#') {
 107                                buf[i - (i && buf[i-1] == '\r')] = 0;
 108                                add_exclude(entry, base, baselen, which);
 109                        }
 110                        entry = buf + i + 1;
 111                }
 112        }
 113        return 0;
 114
 115 err:
 116        if (0 <= fd)
 117                close(fd);
 118        return -1;
 119}
 120
 121static void add_excludes_from_file(const char *fname)
 122{
 123        if (add_excludes_from_file_1(fname, "", 0,
 124                                     &exclude_list[EXC_FILE]) < 0)
 125                die("cannot use %s as an exclude file", fname);
 126}
 127
 128static int push_exclude_per_directory(const char *base, int baselen)
 129{
 130        char exclude_file[PATH_MAX];
 131        struct exclude_list *el = &exclude_list[EXC_DIRS];
 132        int current_nr = el->nr;
 133
 134        if (exclude_per_dir) {
 135                memcpy(exclude_file, base, baselen);
 136                strcpy(exclude_file + baselen, exclude_per_dir);
 137                add_excludes_from_file_1(exclude_file, base, baselen, el);
 138        }
 139        return current_nr;
 140}
 141
 142static void pop_exclude_per_directory(int stk)
 143{
 144        struct exclude_list *el = &exclude_list[EXC_DIRS];
 145
 146        while (stk < el->nr)
 147                free(el->excludes[--el->nr]);
 148}
 149
 150/* Scan the list and let the last match determines the fate.
 151 * Return 1 for exclude, 0 for include and -1 for undecided.
 152 */
 153static int excluded_1(const char *pathname,
 154                      int pathlen,
 155                      struct exclude_list *el)
 156{
 157        int i;
 158
 159        if (el->nr) {
 160                for (i = el->nr - 1; 0 <= i; i--) {
 161                        struct exclude *x = el->excludes[i];
 162                        const char *exclude = x->pattern;
 163                        int to_exclude = 1;
 164
 165                        if (*exclude == '!') {
 166                                to_exclude = 0;
 167                                exclude++;
 168                        }
 169
 170                        if (!strchr(exclude, '/')) {
 171                                /* match basename */
 172                                const char *basename = strrchr(pathname, '/');
 173                                basename = (basename) ? basename+1 : pathname;
 174                                if (fnmatch(exclude, basename, 0) == 0)
 175                                        return to_exclude;
 176                        }
 177                        else {
 178                                /* match with FNM_PATHNAME:
 179                                 * exclude has base (baselen long) implicitly
 180                                 * in front of it.
 181                                 */
 182                                int baselen = x->baselen;
 183                                if (*exclude == '/')
 184                                        exclude++;
 185
 186                                if (pathlen < baselen ||
 187                                    (baselen && pathname[baselen-1] != '/') ||
 188                                    strncmp(pathname, x->base, baselen))
 189                                    continue;
 190
 191                                if (fnmatch(exclude, pathname+baselen,
 192                                            FNM_PATHNAME) == 0)
 193                                        return to_exclude;
 194                        }
 195                }
 196        }
 197        return -1; /* undecided */
 198}
 199
 200static int excluded(const char *pathname)
 201{
 202        int pathlen = strlen(pathname);
 203        int st;
 204
 205        for (st = EXC_CMDL; st <= EXC_FILE; st++) {
 206                switch (excluded_1(pathname, pathlen, &exclude_list[st])) {
 207                case 0:
 208                        return 0;
 209                case 1:
 210                        return 1;
 211                }
 212        }
 213        return 0;
 214}
 215
 216struct nond_on_fs {
 217        int len;
 218        char name[FLEX_ARRAY]; /* more */
 219};
 220
 221static struct nond_on_fs **dir;
 222static int nr_dir;
 223static int dir_alloc;
 224
 225static void add_name(const char *pathname, int len)
 226{
 227        struct nond_on_fs *ent;
 228
 229        if (cache_name_pos(pathname, len) >= 0)
 230                return;
 231
 232        if (nr_dir == dir_alloc) {
 233                dir_alloc = alloc_nr(dir_alloc);
 234                dir = xrealloc(dir, dir_alloc*sizeof(ent));
 235        }
 236        ent = xmalloc(sizeof(*ent) + len + 1);
 237        ent->len = len;
 238        memcpy(ent->name, pathname, len);
 239        ent->name[len] = 0;
 240        dir[nr_dir++] = ent;
 241}
 242
 243static int dir_exists(const char *dirname, int len)
 244{
 245        int pos = cache_name_pos(dirname, len);
 246        if (pos >= 0)
 247                return 1;
 248        pos = -pos-1;
 249        if (pos >= active_nr) /* can't */
 250                return 0;
 251        return !strncmp(active_cache[pos]->name, dirname, len);
 252}
 253
 254/*
 255 * Read a directory tree. We currently ignore anything but
 256 * directories, regular files and symlinks. That's because git
 257 * doesn't handle them at all yet. Maybe that will change some
 258 * day.
 259 *
 260 * Also, we ignore the name ".git" (even if it is not a directory).
 261 * That likely will not change.
 262 */
 263static int read_directory(const char *path, const char *base, int baselen)
 264{
 265        DIR *fdir = opendir(path);
 266        int contents = 0;
 267
 268        if (fdir) {
 269                int exclude_stk;
 270                struct dirent *de;
 271                char fullname[MAXPATHLEN + 1];
 272                memcpy(fullname, base, baselen);
 273
 274                exclude_stk = push_exclude_per_directory(base, baselen);
 275
 276                while ((de = readdir(fdir)) != NULL) {
 277                        int len;
 278
 279                        if ((de->d_name[0] == '.') &&
 280                            (de->d_name[1] == 0 ||
 281                             !strcmp(de->d_name + 1, ".") ||
 282                             !strcmp(de->d_name + 1, "git")))
 283                                continue;
 284                        len = strlen(de->d_name);
 285                        memcpy(fullname + baselen, de->d_name, len+1);
 286                        if (excluded(fullname) != show_ignored) {
 287                                if (!show_ignored || DTYPE(de) != DT_DIR) {
 288                                        continue;
 289                                }
 290                        }
 291
 292                        switch (DTYPE(de)) {
 293                        struct stat st;
 294                        int subdir, rewind_base;
 295                        default:
 296                                continue;
 297                        case DT_UNKNOWN:
 298                                if (lstat(fullname, &st))
 299                                        continue;
 300                                if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 301                                        break;
 302                                if (!S_ISDIR(st.st_mode))
 303                                        continue;
 304                                /* fallthrough */
 305                        case DT_DIR:
 306                                memcpy(fullname + baselen + len, "/", 2);
 307                                len++;
 308                                rewind_base = nr_dir;
 309                                subdir = read_directory(fullname, fullname,
 310                                                        baselen + len);
 311                                if (show_other_directories &&
 312                                    (subdir || !hide_empty_directories) &&
 313                                    !dir_exists(fullname, baselen + len)) {
 314                                        // Rewind the read subdirectory
 315                                        while (nr_dir > rewind_base)
 316                                                free(dir[--nr_dir]);
 317                                        break;
 318                                }
 319                                contents += subdir;
 320                                continue;
 321                        case DT_REG:
 322                        case DT_LNK:
 323                                break;
 324                        }
 325                        add_name(fullname, baselen + len);
 326                        contents++;
 327                }
 328                closedir(fdir);
 329
 330                pop_exclude_per_directory(exclude_stk);
 331        }
 332
 333        return contents;
 334}
 335
 336static int cmp_name(const void *p1, const void *p2)
 337{
 338        const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
 339        const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
 340
 341        return cache_name_compare(e1->name, e1->len,
 342                                  e2->name, e2->len);
 343}
 344
 345/*
 346 * Match a pathspec against a filename. The first "len" characters
 347 * are the common prefix
 348 */
 349static int match(const char **spec, char *ps_matched,
 350                 const char *filename, int len)
 351{
 352        const char *m;
 353
 354        while ((m = *spec++) != NULL) {
 355                int matchlen = strlen(m + len);
 356
 357                if (!matchlen)
 358                        goto matched;
 359                if (!strncmp(m + len, filename + len, matchlen)) {
 360                        if (m[len + matchlen - 1] == '/')
 361                                goto matched;
 362                        switch (filename[len + matchlen]) {
 363                        case '/': case '\0':
 364                                goto matched;
 365                        }
 366                }
 367                if (!fnmatch(m + len, filename + len, 0))
 368                        goto matched;
 369                if (ps_matched)
 370                        ps_matched++;
 371                continue;
 372        matched:
 373                if (ps_matched)
 374                        *ps_matched = 1;
 375                return 1;
 376        }
 377        return 0;
 378}
 379
 380static void show_dir_entry(const char *tag, struct nond_on_fs *ent)
 381{
 382        int len = prefix_len;
 383        int offset = prefix_offset;
 384
 385        if (len >= ent->len)
 386                die("git-ls-files: internal error - directory entry not superset of prefix");
 387
 388        if (pathspec && !match(pathspec, ps_matched, ent->name, len))
 389                return;
 390
 391        fputs(tag, stdout);
 392        write_name_quoted("", 0, ent->name + offset, line_terminator, stdout);
 393        putchar(line_terminator);
 394}
 395
 396static void show_other_files(void)
 397{
 398        int i;
 399        for (i = 0; i < nr_dir; i++) {
 400                /* We should not have a matching entry, but we
 401                 * may have an unmerged entry for this path.
 402                 */
 403                struct nond_on_fs *ent = dir[i];
 404                int pos = cache_name_pos(ent->name, ent->len);
 405                struct cache_entry *ce;
 406                if (0 <= pos)
 407                        die("bug in show-other-files");
 408                pos = -pos - 1;
 409                if (pos < active_nr) { 
 410                        ce = active_cache[pos];
 411                        if (ce_namelen(ce) == ent->len &&
 412                            !memcmp(ce->name, ent->name, ent->len))
 413                                continue; /* Yup, this one exists unmerged */
 414                }
 415                show_dir_entry(tag_other, ent);
 416        }
 417}
 418
 419static void show_killed_files(void)
 420{
 421        int i;
 422        for (i = 0; i < nr_dir; i++) {
 423                struct nond_on_fs *ent = dir[i];
 424                char *cp, *sp;
 425                int pos, len, killed = 0;
 426
 427                for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 428                        sp = strchr(cp, '/');
 429                        if (!sp) {
 430                                /* If ent->name is prefix of an entry in the
 431                                 * cache, it will be killed.
 432                                 */
 433                                pos = cache_name_pos(ent->name, ent->len);
 434                                if (0 <= pos)
 435                                        die("bug in show-killed-files");
 436                                pos = -pos - 1;
 437                                while (pos < active_nr &&
 438                                       ce_stage(active_cache[pos]))
 439                                        pos++; /* skip unmerged */
 440                                if (active_nr <= pos)
 441                                        break;
 442                                /* pos points at a name immediately after
 443                                 * ent->name in the cache.  Does it expect
 444                                 * ent->name to be a directory?
 445                                 */
 446                                len = ce_namelen(active_cache[pos]);
 447                                if ((ent->len < len) &&
 448                                    !strncmp(active_cache[pos]->name,
 449                                             ent->name, ent->len) &&
 450                                    active_cache[pos]->name[ent->len] == '/')
 451                                        killed = 1;
 452                                break;
 453                        }
 454                        if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
 455                                /* If any of the leading directories in
 456                                 * ent->name is registered in the cache,
 457                                 * ent->name will be killed.
 458                                 */
 459                                killed = 1;
 460                                break;
 461                        }
 462                }
 463                if (killed)
 464                        show_dir_entry(tag_killed, dir[i]);
 465        }
 466}
 467
 468static void show_ce_entry(const char *tag, struct cache_entry *ce)
 469{
 470        int len = prefix_len;
 471        int offset = prefix_offset;
 472
 473        if (len >= ce_namelen(ce))
 474                die("git-ls-files: internal error - cache entry not superset of prefix");
 475
 476        if (pathspec && !match(pathspec, ps_matched, ce->name, len))
 477                return;
 478
 479        if (tag && *tag && show_valid_bit &&
 480            (ce->ce_flags & htons(CE_VALID))) {
 481                static char alttag[4];
 482                memcpy(alttag, tag, 3);
 483                if (isalpha(tag[0]))
 484                        alttag[0] = tolower(tag[0]);
 485                else if (tag[0] == '?')
 486                        alttag[0] = '!';
 487                else {
 488                        alttag[0] = 'v';
 489                        alttag[1] = tag[0];
 490                        alttag[2] = ' ';
 491                        alttag[3] = 0;
 492                }
 493                tag = alttag;
 494        }
 495
 496        if (!show_stage) {
 497                fputs(tag, stdout);
 498                write_name_quoted("", 0, ce->name + offset,
 499                                  line_terminator, stdout);
 500                putchar(line_terminator);
 501        }
 502        else {
 503                printf("%s%06o %s %d\t",
 504                       tag,
 505                       ntohl(ce->ce_mode),
 506                       abbrev ? find_unique_abbrev(ce->sha1,abbrev)
 507                                : sha1_to_hex(ce->sha1),
 508                       ce_stage(ce));
 509                write_name_quoted("", 0, ce->name + offset,
 510                                  line_terminator, stdout);
 511                putchar(line_terminator);
 512        }
 513}
 514
 515static void show_files(void)
 516{
 517        int i;
 518
 519        /* For cached/deleted files we don't need to even do the readdir */
 520        if (show_others || show_killed) {
 521                const char *path = ".", *base = "";
 522                int baselen = prefix_len;
 523
 524                if (baselen) {
 525                        path = base = prefix;
 526                        if (exclude_per_dir) {
 527                                char *p, *pp = xmalloc(baselen+1);
 528                                memcpy(pp, prefix, baselen+1);
 529                                p = pp;
 530                                while (1) {
 531                                        char save = *p;
 532                                        *p = 0;
 533                                        push_exclude_per_directory(pp, p-pp);
 534                                        *p++ = save;
 535                                        if (!save)
 536                                                break;
 537                                        p = strchr(p, '/');
 538                                        if (p)
 539                                                p++;
 540                                        else
 541                                                p = pp + baselen;
 542                                }
 543                                free(pp);
 544                        }
 545                }
 546                read_directory(path, base, baselen);
 547                qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
 548                if (show_others)
 549                        show_other_files();
 550                if (show_killed)
 551                        show_killed_files();
 552        }
 553        if (show_cached | show_stage) {
 554                for (i = 0; i < active_nr; i++) {
 555                        struct cache_entry *ce = active_cache[i];
 556                        if (excluded(ce->name) != show_ignored)
 557                                continue;
 558                        if (show_unmerged && !ce_stage(ce))
 559                                continue;
 560                        show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
 561                }
 562        }
 563        if (show_deleted | show_modified) {
 564                for (i = 0; i < active_nr; i++) {
 565                        struct cache_entry *ce = active_cache[i];
 566                        struct stat st;
 567                        int err;
 568                        if (excluded(ce->name) != show_ignored)
 569                                continue;
 570                        err = lstat(ce->name, &st);
 571                        if (show_deleted && err)
 572                                show_ce_entry(tag_removed, ce);
 573                        if (show_modified && ce_modified(ce, &st, 0))
 574                                show_ce_entry(tag_modified, ce);
 575                }
 576        }
 577}
 578
 579/*
 580 * Prune the index to only contain stuff starting with "prefix"
 581 */
 582static void prune_cache(void)
 583{
 584        int pos = cache_name_pos(prefix, prefix_len);
 585        unsigned int first, last;
 586
 587        if (pos < 0)
 588                pos = -pos-1;
 589        active_cache += pos;
 590        active_nr -= pos;
 591        first = 0;
 592        last = active_nr;
 593        while (last > first) {
 594                int next = (last + first) >> 1;
 595                struct cache_entry *ce = active_cache[next];
 596                if (!strncmp(ce->name, prefix, prefix_len)) {
 597                        first = next+1;
 598                        continue;
 599                }
 600                last = next;
 601        }
 602        active_nr = last;
 603}
 604
 605static void verify_pathspec(void)
 606{
 607        const char **p, *n, *prev;
 608        char *real_prefix;
 609        unsigned long max;
 610
 611        prev = NULL;
 612        max = PATH_MAX;
 613        for (p = pathspec; (n = *p) != NULL; p++) {
 614                int i, len = 0;
 615                for (i = 0; i < max; i++) {
 616                        char c = n[i];
 617                        if (prev && prev[i] != c)
 618                                break;
 619                        if (!c || c == '*' || c == '?')
 620                                break;
 621                        if (c == '/')
 622                                len = i+1;
 623                }
 624                prev = n;
 625                if (len < max) {
 626                        max = len;
 627                        if (!max)
 628                                break;
 629                }
 630        }
 631
 632        if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
 633                die("git-ls-files: cannot generate relative filenames containing '..'");
 634
 635        real_prefix = NULL;
 636        prefix_len = max;
 637        if (max) {
 638                real_prefix = xmalloc(max + 1);
 639                memcpy(real_prefix, prev, max);
 640                real_prefix[max] = 0;
 641        }
 642        prefix = real_prefix;
 643}
 644
 645static const char ls_files_usage[] =
 646        "git-ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* "
 647        "[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
 648        "[ --exclude-per-directory=<filename> ] [--full-name] [--abbrev] "
 649        "[--] [<file>]*";
 650
 651int main(int argc, const char **argv)
 652{
 653        int i;
 654        int exc_given = 0;
 655
 656        prefix = setup_git_directory();
 657        if (prefix)
 658                prefix_offset = strlen(prefix);
 659        git_config(git_default_config);
 660
 661        for (i = 1; i < argc; i++) {
 662                const char *arg = argv[i];
 663
 664                if (!strcmp(arg, "--")) {
 665                        i++;
 666                        break;
 667                }
 668                if (!strcmp(arg, "-z")) {
 669                        line_terminator = 0;
 670                        continue;
 671                }
 672                if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) {
 673                        tag_cached = "H ";
 674                        tag_unmerged = "M ";
 675                        tag_removed = "R ";
 676                        tag_modified = "C ";
 677                        tag_other = "? ";
 678                        tag_killed = "K ";
 679                        if (arg[1] == 'v')
 680                                show_valid_bit = 1;
 681                        continue;
 682                }
 683                if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
 684                        show_cached = 1;
 685                        continue;
 686                }
 687                if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
 688                        show_deleted = 1;
 689                        continue;
 690                }
 691                if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) {
 692                        show_modified = 1;
 693                        continue;
 694                }
 695                if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
 696                        show_others = 1;
 697                        continue;
 698                }
 699                if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
 700                        show_ignored = 1;
 701                        continue;
 702                }
 703                if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
 704                        show_stage = 1;
 705                        continue;
 706                }
 707                if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
 708                        show_killed = 1;
 709                        continue;
 710                }
 711                if (!strcmp(arg, "--directory")) {
 712                        show_other_directories = 1;
 713                        continue;
 714                }
 715                if (!strcmp(arg, "--no-empty-directory")) {
 716                        hide_empty_directories = 1;
 717                        continue;
 718                }
 719                if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
 720                        /* There's no point in showing unmerged unless
 721                         * you also show the stage information.
 722                         */
 723                        show_stage = 1;
 724                        show_unmerged = 1;
 725                        continue;
 726                }
 727                if (!strcmp(arg, "-x") && i+1 < argc) {
 728                        exc_given = 1;
 729                        add_exclude(argv[++i], "", 0, &exclude_list[EXC_CMDL]);
 730                        continue;
 731                }
 732                if (!strncmp(arg, "--exclude=", 10)) {
 733                        exc_given = 1;
 734                        add_exclude(arg+10, "", 0, &exclude_list[EXC_CMDL]);
 735                        continue;
 736                }
 737                if (!strcmp(arg, "-X") && i+1 < argc) {
 738                        exc_given = 1;
 739                        add_excludes_from_file(argv[++i]);
 740                        continue;
 741                }
 742                if (!strncmp(arg, "--exclude-from=", 15)) {
 743                        exc_given = 1;
 744                        add_excludes_from_file(arg+15);
 745                        continue;
 746                }
 747                if (!strncmp(arg, "--exclude-per-directory=", 24)) {
 748                        exc_given = 1;
 749                        exclude_per_dir = arg + 24;
 750                        continue;
 751                }
 752                if (!strcmp(arg, "--full-name")) {
 753                        prefix_offset = 0;
 754                        continue;
 755                }
 756                if (!strcmp(arg, "--error-unmatch")) {
 757                        error_unmatch = 1;
 758                        continue;
 759                }
 760                if (!strncmp(arg, "--abbrev=", 9)) {
 761                        abbrev = strtoul(arg+9, NULL, 10);
 762                        if (abbrev && abbrev < MINIMUM_ABBREV)
 763                                abbrev = MINIMUM_ABBREV;
 764                        else if (abbrev > 40)
 765                                abbrev = 40;
 766                        continue;
 767                }
 768                if (!strcmp(arg, "--abbrev")) {
 769                        abbrev = DEFAULT_ABBREV;
 770                        continue;
 771                }
 772                if (*arg == '-')
 773                        usage(ls_files_usage);
 774                break;
 775        }
 776
 777        pathspec = get_pathspec(prefix, argv + i);
 778
 779        /* Verify that the pathspec matches the prefix */
 780        if (pathspec)
 781                verify_pathspec();
 782
 783        /* Treat unmatching pathspec elements as errors */
 784        if (pathspec && error_unmatch) {
 785                int num;
 786                for (num = 0; pathspec[num]; num++)
 787                        ;
 788                ps_matched = xcalloc(1, num);
 789        }
 790
 791        if (show_ignored && !exc_given) {
 792                fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
 793                        argv[0]);
 794                exit(1);
 795        }
 796
 797        /* With no flags, we default to showing the cached files */
 798        if (!(show_stage | show_deleted | show_others | show_unmerged |
 799              show_killed | show_modified))
 800                show_cached = 1;
 801
 802        read_cache();
 803        if (prefix)
 804                prune_cache();
 805        show_files();
 806
 807        if (ps_matched) {
 808                /* We need to make sure all pathspec matched otherwise
 809                 * it is an error.
 810                 */
 811                int num, errors = 0;
 812                for (num = 0; pathspec[num]; num++) {
 813                        if (ps_matched[num])
 814                                continue;
 815                        error("pathspec '%s' did not match any.",
 816                              pathspec[num] + prefix_offset);
 817                        errors++;
 818                }
 819                return errors ? 1 : 0;
 820        }
 821
 822        return 0;
 823}