ls-files.con commit Merge part of np/delta (d00e0f8)
   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 show_deleted = 0;
  15static int show_cached = 0;
  16static int show_others = 0;
  17static int show_ignored = 0;
  18static int show_stage = 0;
  19static int show_unmerged = 0;
  20static int show_modified = 0;
  21static int show_killed = 0;
  22static int show_other_directories = 0;
  23static int show_valid_bit = 0;
  24static int line_terminator = '\n';
  25
  26static int prefix_len = 0, prefix_offset = 0;
  27static const char *prefix = NULL;
  28static const char **pathspec = NULL;
  29static int error_unmatch = 0;
  30static char *ps_matched = NULL;
  31
  32static const char *tag_cached = "";
  33static const char *tag_unmerged = "";
  34static const char *tag_removed = "";
  35static const char *tag_other = "";
  36static const char *tag_killed = "";
  37static const char *tag_modified = "";
  38
  39static const char *exclude_per_dir = NULL;
  40
  41/* We maintain three exclude pattern lists:
  42 * EXC_CMDL lists patterns explicitly given on the command line.
  43 * EXC_DIRS lists patterns obtained from per-directory ignore files.
  44 * EXC_FILE lists patterns from fallback ignore files.
  45 */
  46#define EXC_CMDL 0
  47#define EXC_DIRS 1
  48#define EXC_FILE 2
  49static struct exclude_list {
  50        int nr;
  51        int alloc;
  52        struct exclude {
  53                const char *pattern;
  54                const char *base;
  55                int baselen;
  56        } **excludes;
  57} exclude_list[3];
  58
  59static void add_exclude(const char *string, const char *base,
  60                        int baselen, struct exclude_list *which)
  61{
  62        struct exclude *x = xmalloc(sizeof (*x));
  63
  64        x->pattern = string;
  65        x->base = base;
  66        x->baselen = baselen;
  67        if (which->nr == which->alloc) {
  68                which->alloc = alloc_nr(which->alloc);
  69                which->excludes = realloc(which->excludes,
  70                                          which->alloc * sizeof(x));
  71        }
  72        which->excludes[which->nr++] = x;
  73}
  74
  75static int add_excludes_from_file_1(const char *fname,
  76                                    const char *base,
  77                                    int baselen,
  78                                    struct exclude_list *which)
  79{
  80        int fd, i;
  81        long size;
  82        char *buf, *entry;
  83
  84        fd = open(fname, O_RDONLY);
  85        if (fd < 0)
  86                goto err;
  87        size = lseek(fd, 0, SEEK_END);
  88        if (size < 0)
  89                goto err;
  90        lseek(fd, 0, SEEK_SET);
  91        if (size == 0) {
  92                close(fd);
  93                return 0;
  94        }
  95        buf = xmalloc(size);
  96        if (read(fd, buf, size) != size)
  97                goto err;
  98        close(fd);
  99
 100        entry = buf;
 101        for (i = 0; i < size; i++) {
 102                if (buf[i] == '\n') {
 103                        if (entry != buf + i && entry[0] != '#') {
 104                                buf[i - (i && buf[i-1] == '\r')] = 0;
 105                                add_exclude(entry, base, baselen, which);
 106                        }
 107                        entry = buf + i + 1;
 108                }
 109        }
 110        return 0;
 111
 112 err:
 113        if (0 <= fd)
 114                close(fd);
 115        return -1;
 116}
 117
 118static void add_excludes_from_file(const char *fname)
 119{
 120        if (add_excludes_from_file_1(fname, "", 0,
 121                                     &exclude_list[EXC_FILE]) < 0)
 122                die("cannot use %s as an exclude file", fname);
 123}
 124
 125static int push_exclude_per_directory(const char *base, int baselen)
 126{
 127        char exclude_file[PATH_MAX];
 128        struct exclude_list *el = &exclude_list[EXC_DIRS];
 129        int current_nr = el->nr;
 130
 131        if (exclude_per_dir) {
 132                memcpy(exclude_file, base, baselen);
 133                strcpy(exclude_file + baselen, exclude_per_dir);
 134                add_excludes_from_file_1(exclude_file, base, baselen, el);
 135        }
 136        return current_nr;
 137}
 138
 139static void pop_exclude_per_directory(int stk)
 140{
 141        struct exclude_list *el = &exclude_list[EXC_DIRS];
 142
 143        while (stk < el->nr)
 144                free(el->excludes[--el->nr]);
 145}
 146
 147/* Scan the list and let the last match determines the fate.
 148 * Return 1 for exclude, 0 for include and -1 for undecided.
 149 */
 150static int excluded_1(const char *pathname,
 151                      int pathlen,
 152                      struct exclude_list *el)
 153{
 154        int i;
 155
 156        if (el->nr) {
 157                for (i = el->nr - 1; 0 <= i; i--) {
 158                        struct exclude *x = el->excludes[i];
 159                        const char *exclude = x->pattern;
 160                        int to_exclude = 1;
 161
 162                        if (*exclude == '!') {
 163                                to_exclude = 0;
 164                                exclude++;
 165                        }
 166
 167                        if (!strchr(exclude, '/')) {
 168                                /* match basename */
 169                                const char *basename = strrchr(pathname, '/');
 170                                basename = (basename) ? basename+1 : pathname;
 171                                if (fnmatch(exclude, basename, 0) == 0)
 172                                        return to_exclude;
 173                        }
 174                        else {
 175                                /* match with FNM_PATHNAME:
 176                                 * exclude has base (baselen long) implicitly
 177                                 * in front of it.
 178                                 */
 179                                int baselen = x->baselen;
 180                                if (*exclude == '/')
 181                                        exclude++;
 182
 183                                if (pathlen < baselen ||
 184                                    (baselen && pathname[baselen-1] != '/') ||
 185                                    strncmp(pathname, x->base, baselen))
 186                                    continue;
 187
 188                                if (fnmatch(exclude, pathname+baselen,
 189                                            FNM_PATHNAME) == 0)
 190                                        return to_exclude;
 191                        }
 192                }
 193        }
 194        return -1; /* undecided */
 195}
 196
 197static int excluded(const char *pathname)
 198{
 199        int pathlen = strlen(pathname);
 200        int st;
 201
 202        for (st = EXC_CMDL; st <= EXC_FILE; st++) {
 203                switch (excluded_1(pathname, pathlen, &exclude_list[st])) {
 204                case 0:
 205                        return 0;
 206                case 1:
 207                        return 1;
 208                }
 209        }
 210        return 0;
 211}
 212
 213struct nond_on_fs {
 214        int len;
 215        char name[FLEX_ARRAY]; /* more */
 216};
 217
 218static struct nond_on_fs **dir;
 219static int nr_dir;
 220static int dir_alloc;
 221
 222static void add_name(const char *pathname, int len)
 223{
 224        struct nond_on_fs *ent;
 225
 226        if (cache_name_pos(pathname, len) >= 0)
 227                return;
 228
 229        if (nr_dir == dir_alloc) {
 230                dir_alloc = alloc_nr(dir_alloc);
 231                dir = xrealloc(dir, dir_alloc*sizeof(ent));
 232        }
 233        ent = xmalloc(sizeof(*ent) + len + 1);
 234        ent->len = len;
 235        memcpy(ent->name, pathname, len);
 236        ent->name[len] = 0;
 237        dir[nr_dir++] = ent;
 238}
 239
 240static int dir_exists(const char *dirname, int len)
 241{
 242        int pos = cache_name_pos(dirname, len);
 243        if (pos >= 0)
 244                return 1;
 245        pos = -pos-1;
 246        if (pos >= active_nr) /* can't */
 247                return 0;
 248        return !strncmp(active_cache[pos]->name, dirname, len);
 249}
 250
 251/*
 252 * Read a directory tree. We currently ignore anything but
 253 * directories, regular files and symlinks. That's because git
 254 * doesn't handle them at all yet. Maybe that will change some
 255 * day.
 256 *
 257 * Also, we ignore the name ".git" (even if it is not a directory).
 258 * That likely will not change.
 259 */
 260static void read_directory(const char *path, const char *base, int baselen)
 261{
 262        DIR *dir = opendir(path);
 263
 264        if (dir) {
 265                int exclude_stk;
 266                struct dirent *de;
 267                char fullname[MAXPATHLEN + 1];
 268                memcpy(fullname, base, baselen);
 269
 270                exclude_stk = push_exclude_per_directory(base, baselen);
 271
 272                while ((de = readdir(dir)) != NULL) {
 273                        int len;
 274
 275                        if ((de->d_name[0] == '.') &&
 276                            (de->d_name[1] == 0 ||
 277                             !strcmp(de->d_name + 1, ".") ||
 278                             !strcmp(de->d_name + 1, "git")))
 279                                continue;
 280                        len = strlen(de->d_name);
 281                        memcpy(fullname + baselen, de->d_name, len+1);
 282                        if (excluded(fullname) != show_ignored) {
 283                                if (!show_ignored || DTYPE(de) != DT_DIR) {
 284                                        continue;
 285                                }
 286                        }
 287
 288                        switch (DTYPE(de)) {
 289                        struct stat st;
 290                        default:
 291                                continue;
 292                        case DT_UNKNOWN:
 293                                if (lstat(fullname, &st))
 294                                        continue;
 295                                if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
 296                                        break;
 297                                if (!S_ISDIR(st.st_mode))
 298                                        continue;
 299                                /* fallthrough */
 300                        case DT_DIR:
 301                                memcpy(fullname + baselen + len, "/", 2);
 302                                len++;
 303                                if (show_other_directories &&
 304                                    !dir_exists(fullname, baselen + len))
 305                                        break;
 306                                read_directory(fullname, fullname,
 307                                               baselen + len);
 308                                continue;
 309                        case DT_REG:
 310                        case DT_LNK:
 311                                break;
 312                        }
 313                        add_name(fullname, baselen + len);
 314                }
 315                closedir(dir);
 316
 317                pop_exclude_per_directory(exclude_stk);
 318        }
 319}
 320
 321static int cmp_name(const void *p1, const void *p2)
 322{
 323        const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
 324        const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
 325
 326        return cache_name_compare(e1->name, e1->len,
 327                                  e2->name, e2->len);
 328}
 329
 330/*
 331 * Match a pathspec against a filename. The first "len" characters
 332 * are the common prefix
 333 */
 334static int match(const char **spec, char *ps_matched,
 335                 const char *filename, int len)
 336{
 337        const char *m;
 338
 339        while ((m = *spec++) != NULL) {
 340                int matchlen = strlen(m + len);
 341
 342                if (!matchlen)
 343                        goto matched;
 344                if (!strncmp(m + len, filename + len, matchlen)) {
 345                        if (m[len + matchlen - 1] == '/')
 346                                goto matched;
 347                        switch (filename[len + matchlen]) {
 348                        case '/': case '\0':
 349                                goto matched;
 350                        }
 351                }
 352                if (!fnmatch(m + len, filename + len, 0))
 353                        goto matched;
 354                if (ps_matched)
 355                        ps_matched++;
 356                continue;
 357        matched:
 358                if (ps_matched)
 359                        *ps_matched = 1;
 360                return 1;
 361        }
 362        return 0;
 363}
 364
 365static void show_dir_entry(const char *tag, struct nond_on_fs *ent)
 366{
 367        int len = prefix_len;
 368        int offset = prefix_offset;
 369
 370        if (len >= ent->len)
 371                die("git-ls-files: internal error - directory entry not superset of prefix");
 372
 373        if (pathspec && !match(pathspec, ps_matched, ent->name, len))
 374                return;
 375
 376        fputs(tag, stdout);
 377        write_name_quoted("", 0, ent->name + offset, line_terminator, stdout);
 378        putchar(line_terminator);
 379}
 380
 381static void show_other_files(void)
 382{
 383        int i;
 384        for (i = 0; i < nr_dir; i++) {
 385                /* We should not have a matching entry, but we
 386                 * may have an unmerged entry for this path.
 387                 */
 388                struct nond_on_fs *ent = dir[i];
 389                int pos = cache_name_pos(ent->name, ent->len);
 390                struct cache_entry *ce;
 391                if (0 <= pos)
 392                        die("bug in show-other-files");
 393                pos = -pos - 1;
 394                if (pos < active_nr) { 
 395                        ce = active_cache[pos];
 396                        if (ce_namelen(ce) == ent->len &&
 397                            !memcmp(ce->name, ent->name, ent->len))
 398                                continue; /* Yup, this one exists unmerged */
 399                }
 400                show_dir_entry(tag_other, ent);
 401        }
 402}
 403
 404static void show_killed_files(void)
 405{
 406        int i;
 407        for (i = 0; i < nr_dir; i++) {
 408                struct nond_on_fs *ent = dir[i];
 409                char *cp, *sp;
 410                int pos, len, killed = 0;
 411
 412                for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 413                        sp = strchr(cp, '/');
 414                        if (!sp) {
 415                                /* If ent->name is prefix of an entry in the
 416                                 * cache, it will be killed.
 417                                 */
 418                                pos = cache_name_pos(ent->name, ent->len);
 419                                if (0 <= pos)
 420                                        die("bug in show-killed-files");
 421                                pos = -pos - 1;
 422                                while (pos < active_nr &&
 423                                       ce_stage(active_cache[pos]))
 424                                        pos++; /* skip unmerged */
 425                                if (active_nr <= pos)
 426                                        break;
 427                                /* pos points at a name immediately after
 428                                 * ent->name in the cache.  Does it expect
 429                                 * ent->name to be a directory?
 430                                 */
 431                                len = ce_namelen(active_cache[pos]);
 432                                if ((ent->len < len) &&
 433                                    !strncmp(active_cache[pos]->name,
 434                                             ent->name, ent->len) &&
 435                                    active_cache[pos]->name[ent->len] == '/')
 436                                        killed = 1;
 437                                break;
 438                        }
 439                        if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
 440                                /* If any of the leading directories in
 441                                 * ent->name is registered in the cache,
 442                                 * ent->name will be killed.
 443                                 */
 444                                killed = 1;
 445                                break;
 446                        }
 447                }
 448                if (killed)
 449                        show_dir_entry(tag_killed, dir[i]);
 450        }
 451}
 452
 453static void show_ce_entry(const char *tag, struct cache_entry *ce)
 454{
 455        int len = prefix_len;
 456        int offset = prefix_offset;
 457
 458        if (len >= ce_namelen(ce))
 459                die("git-ls-files: internal error - cache entry not superset of prefix");
 460
 461        if (pathspec && !match(pathspec, ps_matched, ce->name, len))
 462                return;
 463
 464        if (tag && *tag && show_valid_bit &&
 465            (ce->ce_flags & htons(CE_VALID))) {
 466                static char alttag[4];
 467                memcpy(alttag, tag, 3);
 468                if (isalpha(tag[0]))
 469                        alttag[0] = tolower(tag[0]);
 470                else if (tag[0] == '?')
 471                        alttag[0] = '!';
 472                else {
 473                        alttag[0] = 'v';
 474                        alttag[1] = tag[0];
 475                        alttag[2] = ' ';
 476                        alttag[3] = 0;
 477                }
 478                tag = alttag;
 479        }
 480
 481        if (!show_stage) {
 482                fputs(tag, stdout);
 483                write_name_quoted("", 0, ce->name + offset,
 484                                  line_terminator, stdout);
 485                putchar(line_terminator);
 486        }
 487        else {
 488                printf("%s%06o %s %d\t",
 489                       tag,
 490                       ntohl(ce->ce_mode),
 491                       sha1_to_hex(ce->sha1),
 492                       ce_stage(ce));
 493                write_name_quoted("", 0, ce->name + offset,
 494                                  line_terminator, stdout);
 495                putchar(line_terminator);
 496        }
 497}
 498
 499static void show_files(void)
 500{
 501        int i;
 502
 503        /* For cached/deleted files we don't need to even do the readdir */
 504        if (show_others || show_killed) {
 505                const char *path = ".", *base = "";
 506                int baselen = prefix_len;
 507
 508                if (baselen) {
 509                        path = base = prefix;
 510                        if (exclude_per_dir) {
 511                                char *p, *pp = xmalloc(baselen+1);
 512                                memcpy(pp, prefix, baselen+1);
 513                                p = pp;
 514                                while (1) {
 515                                        char save = *p;
 516                                        *p = 0;
 517                                        push_exclude_per_directory(pp, p-pp);
 518                                        *p++ = save;
 519                                        if (!save)
 520                                                break;
 521                                        p = strchr(p, '/');
 522                                        if (p)
 523                                                p++;
 524                                        else
 525                                                p = pp + baselen;
 526                                }
 527                                free(pp);
 528                        }
 529                }
 530                read_directory(path, base, baselen);
 531                qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
 532                if (show_others)
 533                        show_other_files();
 534                if (show_killed)
 535                        show_killed_files();
 536        }
 537        if (show_cached | show_stage) {
 538                for (i = 0; i < active_nr; i++) {
 539                        struct cache_entry *ce = active_cache[i];
 540                        if (excluded(ce->name) != show_ignored)
 541                                continue;
 542                        if (show_unmerged && !ce_stage(ce))
 543                                continue;
 544                        show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
 545                }
 546        }
 547        if (show_deleted | show_modified) {
 548                for (i = 0; i < active_nr; i++) {
 549                        struct cache_entry *ce = active_cache[i];
 550                        struct stat st;
 551                        int err;
 552                        if (excluded(ce->name) != show_ignored)
 553                                continue;
 554                        err = lstat(ce->name, &st);
 555                        if (show_deleted && err)
 556                                show_ce_entry(tag_removed, ce);
 557                        if (show_modified && ce_modified(ce, &st, 0))
 558                                show_ce_entry(tag_modified, ce);
 559                }
 560        }
 561}
 562
 563/*
 564 * Prune the index to only contain stuff starting with "prefix"
 565 */
 566static void prune_cache(void)
 567{
 568        int pos = cache_name_pos(prefix, prefix_len);
 569        unsigned int first, last;
 570
 571        if (pos < 0)
 572                pos = -pos-1;
 573        active_cache += pos;
 574        active_nr -= pos;
 575        first = 0;
 576        last = active_nr;
 577        while (last > first) {
 578                int next = (last + first) >> 1;
 579                struct cache_entry *ce = active_cache[next];
 580                if (!strncmp(ce->name, prefix, prefix_len)) {
 581                        first = next+1;
 582                        continue;
 583                }
 584                last = next;
 585        }
 586        active_nr = last;
 587}
 588
 589static void verify_pathspec(void)
 590{
 591        const char **p, *n, *prev;
 592        char *real_prefix;
 593        unsigned long max;
 594
 595        prev = NULL;
 596        max = PATH_MAX;
 597        for (p = pathspec; (n = *p) != NULL; p++) {
 598                int i, len = 0;
 599                for (i = 0; i < max; i++) {
 600                        char c = n[i];
 601                        if (prev && prev[i] != c)
 602                                break;
 603                        if (!c || c == '*' || c == '?')
 604                                break;
 605                        if (c == '/')
 606                                len = i+1;
 607                }
 608                prev = n;
 609                if (len < max) {
 610                        max = len;
 611                        if (!max)
 612                                break;
 613                }
 614        }
 615
 616        if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
 617                die("git-ls-files: cannot generate relative filenames containing '..'");
 618
 619        real_prefix = NULL;
 620        prefix_len = max;
 621        if (max) {
 622                real_prefix = xmalloc(max + 1);
 623                memcpy(real_prefix, prev, max);
 624                real_prefix[max] = 0;
 625        }
 626        prefix = real_prefix;
 627}
 628
 629static const char ls_files_usage[] =
 630        "git-ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* "
 631        "[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] "
 632        "[ --exclude-per-directory=<filename> ] [--full-name] [--] [<file>]*";
 633
 634int main(int argc, const char **argv)
 635{
 636        int i;
 637        int exc_given = 0;
 638
 639        prefix = setup_git_directory();
 640        if (prefix)
 641                prefix_offset = strlen(prefix);
 642        git_config(git_default_config);
 643
 644        for (i = 1; i < argc; i++) {
 645                const char *arg = argv[i];
 646
 647                if (!strcmp(arg, "--")) {
 648                        i++;
 649                        break;
 650                }
 651                if (!strcmp(arg, "-z")) {
 652                        line_terminator = 0;
 653                        continue;
 654                }
 655                if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) {
 656                        tag_cached = "H ";
 657                        tag_unmerged = "M ";
 658                        tag_removed = "R ";
 659                        tag_modified = "C ";
 660                        tag_other = "? ";
 661                        tag_killed = "K ";
 662                        if (arg[1] == 'v')
 663                                show_valid_bit = 1;
 664                        continue;
 665                }
 666                if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
 667                        show_cached = 1;
 668                        continue;
 669                }
 670                if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
 671                        show_deleted = 1;
 672                        continue;
 673                }
 674                if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) {
 675                        show_modified = 1;
 676                        continue;
 677                }
 678                if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
 679                        show_others = 1;
 680                        continue;
 681                }
 682                if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
 683                        show_ignored = 1;
 684                        continue;
 685                }
 686                if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
 687                        show_stage = 1;
 688                        continue;
 689                }
 690                if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
 691                        show_killed = 1;
 692                        continue;
 693                }
 694                if (!strcmp(arg, "--directory")) {
 695                        show_other_directories = 1;
 696                        continue;
 697                }
 698                if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
 699                        /* There's no point in showing unmerged unless
 700                         * you also show the stage information.
 701                         */
 702                        show_stage = 1;
 703                        show_unmerged = 1;
 704                        continue;
 705                }
 706                if (!strcmp(arg, "-x") && i+1 < argc) {
 707                        exc_given = 1;
 708                        add_exclude(argv[++i], "", 0, &exclude_list[EXC_CMDL]);
 709                        continue;
 710                }
 711                if (!strncmp(arg, "--exclude=", 10)) {
 712                        exc_given = 1;
 713                        add_exclude(arg+10, "", 0, &exclude_list[EXC_CMDL]);
 714                        continue;
 715                }
 716                if (!strcmp(arg, "-X") && i+1 < argc) {
 717                        exc_given = 1;
 718                        add_excludes_from_file(argv[++i]);
 719                        continue;
 720                }
 721                if (!strncmp(arg, "--exclude-from=", 15)) {
 722                        exc_given = 1;
 723                        add_excludes_from_file(arg+15);
 724                        continue;
 725                }
 726                if (!strncmp(arg, "--exclude-per-directory=", 24)) {
 727                        exc_given = 1;
 728                        exclude_per_dir = arg + 24;
 729                        continue;
 730                }
 731                if (!strcmp(arg, "--full-name")) {
 732                        prefix_offset = 0;
 733                        continue;
 734                }
 735                if (!strcmp(arg, "--error-unmatch")) {
 736                        error_unmatch = 1;
 737                        continue;
 738                }
 739                if (*arg == '-')
 740                        usage(ls_files_usage);
 741                break;
 742        }
 743
 744        pathspec = get_pathspec(prefix, argv + i);
 745
 746        /* Verify that the pathspec matches the prefix */
 747        if (pathspec)
 748                verify_pathspec();
 749
 750        /* Treat unmatching pathspec elements as errors */
 751        if (pathspec && error_unmatch) {
 752                int num;
 753                for (num = 0; pathspec[num]; num++)
 754                        ;
 755                ps_matched = xcalloc(1, num);
 756        }
 757
 758        if (show_ignored && !exc_given) {
 759                fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
 760                        argv[0]);
 761                exit(1);
 762        }
 763
 764        /* With no flags, we default to showing the cached files */
 765        if (!(show_stage | show_deleted | show_others | show_unmerged |
 766              show_killed | show_modified))
 767                show_cached = 1;
 768
 769        read_cache();
 770        if (prefix)
 771                prune_cache();
 772        show_files();
 773
 774        if (ps_matched) {
 775                /* We need to make sure all pathspec matched otherwise
 776                 * it is an error.
 777                 */
 778                int num, errors = 0;
 779                for (num = 0; pathspec[num]; num++) {
 780                        if (ps_matched[num])
 781                                continue;
 782                        error("pathspec '%s' did not match any.",
 783                              pathspec[num] + prefix_offset);
 784                        errors++;
 785                }
 786                return errors ? 1 : 0;
 787        }
 788
 789        return 0;
 790}