1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Guido van Rossum. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 #if defined(LIBC_SCCS) && !defined(lint) 33 static char sccsid[] = "@(#)glob.c 5.12 (Berkeley) 6/24/91"; 34 #endif /* LIBC_SCCS and not lint */ 35 /* 36 * Glob: the interface is a superset of the one defined in POSIX 1003.2, 37 * draft 9. 38 * 39 * The [!...] convention to negate a range is supported (SysV, Posix, ksh). 40 * 41 * Optional extra services, controlled by flags not defined by POSIX: 42 * 43 * GLOB_QUOTE: 44 * Escaping convention: \ inhibits any special meaning the following 45 * character might have (except \ at end of string is retained). 46 * GLOB_MAGCHAR: 47 * Set in gl_flags if pattern contained a globbing character. 48 * GLOB_ALTNOT: 49 * Use ^ instead of ! for "not". 50 * gl_matchc: 51 * Number of matches in the current invocation of glob. 52 */ 53 54 #ifdef WINNT_NATIVE 55 #pragma warning(disable:4244) 56 #endif /* WINNT_NATIVE */ 57 58 #define Char __Char 59 #include "sh.h" 60 #include "glob.h" 61 62 #ifndef HAVE_MBLEN 63 #undef mblen 64 #define mblen(_s,_n) mbrlen((_s),(_n),NULL) 65 #endif 66 67 #undef Char 68 #undef QUOTE 69 #undef TILDE 70 #undef META 71 #undef ismeta 72 #undef Strchr 73 74 #ifndef S_ISDIR 75 #define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR) 76 #endif 77 78 #if !defined(S_ISLNK) && defined(S_IFLNK) 79 #define S_ISLNK(a) (((a) & S_IFMT) == S_IFLNK) 80 #endif 81 82 #if !defined(S_ISLNK) && !defined(lstat) 83 #define lstat stat 84 #endif 85 86 typedef unsigned short Char; 87 88 static int glob1 (Char *, glob_t *, int); 89 static int glob2 (struct strbuf *, const Char *, glob_t *, int); 90 static int glob3 (struct strbuf *, const Char *, const Char *, 91 const Char *, glob_t *, int); 92 static void globextend (const char *, glob_t *); 93 static int match (const char *, const Char *, const Char *, 94 int); 95 static int compare (const void *, const void *); 96 static DIR *Opendir (const char *); 97 #ifdef S_IFLNK 98 static int Lstat (const char *, struct stat *); 99 #endif 100 static int Stat (const char *, struct stat *sb); 101 static Char *Strchr (Char *, int); 102 #ifdef DEBUG 103 static void qprintf (const char *, const Char *); 104 #endif 105 106 #define DOLLAR '$' 107 #define DOT '.' 108 #define EOS '\0' 109 #define LBRACKET '[' 110 #define NOT '!' 111 #define ALTNOT '^' 112 #define QUESTION '?' 113 #define QUOTE '\\' 114 #define RANGE '-' 115 #define RBRACKET ']' 116 #define SEP '/' 117 #define STAR '*' 118 #define TILDE '~' 119 #define UNDERSCORE '_' 120 121 #define M_META 0x8000 122 #define M_PROTECT 0x4000 123 #define M_MASK 0xffff 124 #define M_ASCII 0x00ff 125 126 #define LCHAR(c) ((c)&M_ASCII) 127 #define META(c) ((c)|M_META) 128 #define M_ALL META('*') 129 #define M_END META(']') 130 #define M_NOT META('!') 131 #define M_ALTNOT META('^') 132 #define M_ONE META('?') 133 #define M_RNG META('-') 134 #define M_SET META('[') 135 #define ismeta(c) (((c)&M_META) != 0) 136 137 int 138 globcharcoll(__Char c1, __Char c2, int cs) 139 { 140 #if defined(NLS) && defined(LC_COLLATE) && defined(HAVE_STRCOLL) 141 # if defined(WIDE_STRINGS) 142 wchar_t s1[2], s2[2]; 143 144 if (c1 == c2) 145 return (0); 146 if (cs) { 147 c1 = towlower(c1); 148 c2 = towlower(c2); 149 } else { 150 #ifndef __FreeBSD__ 151 /* This should not be here, but I'll rather leave it in than engage in 152 a LC_COLLATE flamewar about a shell I don't use... */ 153 if (iswlower(c1) && iswupper(c2)) 154 return (1); 155 if (iswupper(c1) && iswlower(c2)) 156 return (-1); 157 #endif 158 } 159 s1[0] = c1; 160 s2[0] = c2; 161 s1[1] = s2[1] = '\0'; 162 return wcscoll(s1, s2); 163 # else /* not WIDE_STRINGS */ 164 char s1[2], s2[2]; 165 166 if (c1 == c2) 167 return (0); 168 /* 169 * From kevin lyda <kevin@suberic.net>: 170 * strcoll does not guarantee case sorting, so we pre-process now: 171 */ 172 if (cs) { 173 c1 = islower(c1) ? c1 : tolower(c1); 174 c2 = islower(c2) ? c2 : tolower(c2); 175 } else { 176 if (islower(c1) && isupper(c2)) 177 return (1); 178 if (isupper(c1) && islower(c2)) 179 return (-1); 180 } 181 s1[0] = c1; 182 s2[0] = c2; 183 s1[1] = s2[1] = '\0'; 184 return strcoll(s1, s2); 185 # endif 186 #else 187 return (c1 - c2); 188 #endif 189 } 190 191 /* 192 * Need to dodge two kernel bugs: 193 * opendir("") != opendir(".") 194 * NAMEI_BUG: on plain files trailing slashes are ignored in some kernels. 195 * POSIX specifies that they should be ignored in directories. 196 */ 197 198 static DIR * 199 Opendir(const char *str) 200 { 201 #if defined(hpux) || defined(__hpux) 202 struct stat st; 203 #endif 204 205 if (!*str) 206 return (opendir(".")); 207 #if defined(hpux) || defined(__hpux) 208 /* 209 * Opendir on some device files hangs, so avoid it 210 */ 211 if (stat(str, &st) == -1 || !S_ISDIR(st.st_mode)) 212 return NULL; 213 #endif 214 return opendir(str); 215 } 216 217 #ifdef S_IFLNK 218 static int 219 Lstat(const char *fn, struct stat *sb) 220 { 221 int st; 222 223 st = lstat(fn, sb); 224 # ifdef NAMEI_BUG 225 if (*fn != 0 && strend(fn)[-1] == '/' && !S_ISDIR(sb->st_mode)) 226 st = -1; 227 # endif /* NAMEI_BUG */ 228 return st; 229 } 230 #else 231 #define Lstat Stat 232 #endif /* S_IFLNK */ 233 234 static int 235 Stat(const char *fn, struct stat *sb) 236 { 237 int st; 238 239 st = stat(fn, sb); 240 #ifdef NAMEI_BUG 241 if (*fn != 0 && strend(fn)[-1] == '/' && !S_ISDIR(sb->st_mode)) 242 st = -1; 243 #endif /* NAMEI_BUG */ 244 return st; 245 } 246 247 static Char * 248 Strchr(Char *str, int ch) 249 { 250 do 251 if (*str == ch) 252 return (str); 253 while (*str++); 254 return (NULL); 255 } 256 257 #ifdef DEBUG 258 static void 259 qprintf(const char *pre, const Char *s) 260 { 261 const Char *p; 262 263 xprintf("%s", pre); 264 for (p = s; *p; p++) 265 xprintf("%c", *p & 0xff); 266 xprintf("\n%s", pre); 267 for (p = s; *p; p++) 268 xprintf("%c", *p & M_PROTECT ? '"' : ' '); 269 xprintf("\n%s", pre); 270 for (p = s; *p; p++) 271 xprintf("%c", *p & M_META ? '_' : ' '); 272 xprintf("\n"); 273 } 274 #endif /* DEBUG */ 275 276 static int 277 compare(const void *p, const void *q) 278 { 279 #if defined(NLS) && defined(HAVE_STRCOLL) 280 return (strcoll(*(char *const *) p, *(char *const *) q)); 281 #else 282 return (strcmp(*(char *const *) p, *(char *const *) q)); 283 #endif /* NLS && HAVE_STRCOLL */ 284 } 285 286 /* 287 * The main glob() routine: compiles the pattern (optionally processing 288 * quotes), calls glob1() to do the real pattern matching, and finally 289 * sorts the list (unless unsorted operation is requested). Returns 0 290 * if things went well, nonzero if errors occurred. It is not an error 291 * to find no matches. 292 */ 293 int 294 glob(const char *pattern, int flags, int (*errfunc) (const char *, int), 295 glob_t *pglob) 296 { 297 int err, oldpathc; 298 Char *bufnext, m_not; 299 const unsigned char *patnext; 300 int c, not; 301 Char *qpatnext, *patbuf; 302 int no_match; 303 304 patnext = (const unsigned char *) pattern; 305 if (!(flags & GLOB_APPEND)) { 306 pglob->gl_pathc = 0; 307 pglob->gl_pathv = NULL; 308 if (!(flags & GLOB_DOOFFS)) 309 pglob->gl_offs = 0; 310 } 311 pglob->gl_flags = flags & ~GLOB_MAGCHAR; 312 pglob->gl_errfunc = errfunc; 313 oldpathc = pglob->gl_pathc; 314 pglob->gl_matchc = 0; 315 316 if (pglob->gl_flags & GLOB_ALTNOT) { 317 not = ALTNOT; 318 m_not = M_ALTNOT; 319 } 320 else { 321 not = NOT; 322 m_not = M_NOT; 323 } 324 325 patbuf = xmalloc((strlen(pattern) + 1) * sizeof(*patbuf)); 326 bufnext = patbuf; 327 328 no_match = *patnext == not; 329 if (no_match) 330 patnext++; 331 332 if (flags & GLOB_QUOTE) { 333 /* Protect the quoted characters */ 334 while ((c = *patnext++) != EOS) { 335 #ifdef WIDE_STRINGS 336 int len; 337 338 len = mblen((const char *)(patnext - 1), MB_LEN_MAX); 339 if (len == -1) 340 TCSH_IGNORE(mblen(NULL, 0)); 341 else if (len > 1) { 342 *bufnext++ = (Char) c; 343 while (--len != 0) 344 *bufnext++ = (Char) (*patnext++ | M_PROTECT); 345 } else 346 #endif /* WIDE_STRINGS */ 347 if (c == QUOTE) { 348 if ((c = *patnext++) == EOS) { 349 c = QUOTE; 350 --patnext; 351 } 352 *bufnext++ = (Char) (c | M_PROTECT); 353 } 354 else 355 *bufnext++ = (Char) c; 356 } 357 } 358 else 359 while ((c = *patnext++) != EOS) 360 *bufnext++ = (Char) c; 361 *bufnext = EOS; 362 363 bufnext = patbuf; 364 qpatnext = patbuf; 365 while ((c = *qpatnext++) != EOS) { 366 switch (c) { 367 case LBRACKET: 368 c = *qpatnext; 369 if (c == not) 370 ++qpatnext; 371 if (*qpatnext == EOS || 372 Strchr(qpatnext + 1, RBRACKET) == NULL) { 373 *bufnext++ = LBRACKET; 374 if (c == not) 375 --qpatnext; 376 break; 377 } 378 pglob->gl_flags |= GLOB_MAGCHAR; 379 *bufnext++ = M_SET; 380 if (c == not) 381 *bufnext++ = m_not; 382 c = *qpatnext++; 383 do { 384 *bufnext++ = LCHAR(c); 385 if (*qpatnext == RANGE && 386 (c = qpatnext[1]) != RBRACKET) { 387 *bufnext++ = M_RNG; 388 *bufnext++ = LCHAR(c); 389 qpatnext += 2; 390 } 391 } while ((c = *qpatnext++) != RBRACKET); 392 *bufnext++ = M_END; 393 break; 394 case QUESTION: 395 pglob->gl_flags |= GLOB_MAGCHAR; 396 *bufnext++ = M_ONE; 397 break; 398 case STAR: 399 pglob->gl_flags |= GLOB_MAGCHAR; 400 /* collapse adjacent stars to one [or three if globstar], 401 * to avoid exponential behavior 402 */ 403 if (bufnext == patbuf || bufnext[-1] != M_ALL || 404 ((flags & GLOB_STAR) != 0 && 405 (bufnext - 1 == patbuf || bufnext[-2] != M_ALL || 406 bufnext - 2 == patbuf || bufnext[-3] != M_ALL))) 407 *bufnext++ = M_ALL; 408 break; 409 default: 410 *bufnext++ = LCHAR(c); 411 break; 412 } 413 } 414 *bufnext = EOS; 415 #ifdef DEBUG 416 qprintf("patbuf=", patbuf); 417 #endif 418 419 if ((err = glob1(patbuf, pglob, no_match)) != 0) { 420 xfree(patbuf); 421 return (err); 422 } 423 424 /* 425 * If there was no match we are going to append the pattern 426 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified 427 * and the pattern did not contain any magic characters 428 * GLOB_NOMAGIC is there just for compatibility with csh. 429 */ 430 if (pglob->gl_pathc == oldpathc && 431 ((flags & GLOB_NOCHECK) || 432 ((flags & GLOB_NOMAGIC) && !(pglob->gl_flags & GLOB_MAGCHAR)))) { 433 if (!(flags & GLOB_QUOTE)) 434 globextend(pattern, pglob); 435 else { 436 char *copy, *dest; 437 const char *src; 438 439 /* copy pattern, interpreting quotes */ 440 copy = xmalloc(strlen(pattern) + 1); 441 dest = copy; 442 src = pattern; 443 while (*src != EOS) { 444 /* Don't interpret quotes. The spec does not say we should do */ 445 if (*src == QUOTE) { 446 if (*++src == EOS) 447 --src; 448 } 449 *dest++ = *src++; 450 } 451 *dest = EOS; 452 globextend(copy, pglob); 453 xfree(copy); 454 } 455 xfree(patbuf); 456 return 0; 457 } 458 else if (!(flags & GLOB_NOSORT) && (pglob->gl_pathc != oldpathc)) 459 qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, 460 pglob->gl_pathc - oldpathc, sizeof(char *), compare); 461 xfree(patbuf); 462 return (0); 463 } 464 465 static int 466 glob1(Char *pattern, glob_t *pglob, int no_match) 467 { 468 struct strbuf pathbuf = strbuf_INIT; 469 int err; 470 471 /* 472 * a null pathname is invalid -- POSIX 1003.1 sect. 2.4. 473 */ 474 if (*pattern == EOS) 475 return (0); 476 err = glob2(&pathbuf, pattern, pglob, no_match); 477 xfree(pathbuf.s); 478 return err; 479 } 480 481 /* 482 * functions glob2 and glob3 are mutually recursive; there is one level 483 * of recursion for each segment in the pattern that contains one or 484 * more meta characters. 485 */ 486 static int 487 glob2(struct strbuf *pathbuf, const Char *pattern, glob_t *pglob, int no_match) 488 { 489 struct stat sbuf; 490 int anymeta; 491 const Char *p; 492 size_t orig_len; 493 494 /* 495 * loop over pattern segments until end of pattern or until segment with 496 * meta character found. 497 */ 498 anymeta = 0; 499 for (;;) { 500 if (*pattern == EOS) { /* end of pattern? */ 501 strbuf_terminate(pathbuf); 502 503 if (Lstat(pathbuf->s, &sbuf)) 504 return (0); 505 506 if (((pglob->gl_flags & GLOB_MARK) && 507 pathbuf->s[pathbuf->len - 1] != SEP) && 508 (S_ISDIR(sbuf.st_mode) 509 #ifdef S_IFLNK 510 || (S_ISLNK(sbuf.st_mode) && 511 (Stat(pathbuf->s, &sbuf) == 0) && 512 S_ISDIR(sbuf.st_mode)) 513 #endif 514 )) { 515 strbuf_append1(pathbuf, SEP); 516 strbuf_terminate(pathbuf); 517 } 518 ++pglob->gl_matchc; 519 globextend(pathbuf->s, pglob); 520 return 0; 521 } 522 523 /* find end of next segment, tentatively copy to pathbuf */ 524 p = pattern; 525 orig_len = pathbuf->len; 526 while (*p != EOS && *p != SEP) { 527 if (ismeta(*p)) 528 anymeta = 1; 529 strbuf_append1(pathbuf, *p++); 530 } 531 532 if (!anymeta) { /* no expansion, do next segment */ 533 pattern = p; 534 while (*pattern == SEP) 535 strbuf_append1(pathbuf, *pattern++); 536 } 537 else { /* need expansion, recurse */ 538 pathbuf->len = orig_len; 539 return (glob3(pathbuf, pattern, p, pattern, pglob, no_match)); 540 } 541 } 542 /* NOTREACHED */ 543 } 544 545 static size_t 546 One_Char_mbtowc(__Char *pwc, const Char *s, size_t n) 547 { 548 #ifdef WIDE_STRINGS 549 char buf[MB_LEN_MAX], *p; 550 551 if (n > MB_LEN_MAX) 552 n = MB_LEN_MAX; 553 p = buf; 554 while (p < buf + n && (*p++ = LCHAR(*s++)) != 0) 555 ; 556 return one_mbtowc(pwc, buf, n); 557 #else 558 *pwc = *s & CHAR; 559 return 1; 560 #endif 561 } 562 563 static int 564 glob3(struct strbuf *pathbuf, const Char *pattern, const Char *restpattern, 565 const Char *pglobstar, glob_t *pglob, int no_match) 566 { 567 DIR *dirp; 568 struct dirent *dp; 569 struct stat sbuf; 570 int err; 571 Char m_not = (pglob->gl_flags & GLOB_ALTNOT) ? M_ALTNOT : M_NOT; 572 size_t orig_len; 573 int globstar = 0; 574 int chase_symlinks = 0; 575 const Char *termstar = NULL; 576 577 strbuf_terminate(pathbuf); 578 orig_len = pathbuf->len; 579 errno = err = 0; 580 581 while (pglobstar < restpattern) { 582 __Char wc; 583 size_t width = One_Char_mbtowc(&wc, pglobstar, MB_LEN_MAX); 584 if ((pglobstar[0] & M_MASK) == M_ALL && 585 (pglobstar[width] & M_MASK) == M_ALL) { 586 globstar = 1; 587 chase_symlinks = (pglobstar[2 * width] & M_MASK) == M_ALL; 588 termstar = pglobstar + (2 + chase_symlinks) * width; 589 break; 590 } 591 pglobstar += width; 592 } 593 594 if (globstar) { 595 err = pglobstar==pattern && termstar==restpattern ? 596 *restpattern == EOS ? 597 glob2(pathbuf, restpattern - 1, pglob, no_match) : 598 glob2(pathbuf, restpattern + 1, pglob, no_match) : 599 glob3(pathbuf, pattern, restpattern, termstar, pglob, no_match); 600 if (err) 601 return err; 602 pathbuf->len = orig_len; 603 strbuf_terminate(pathbuf); 604 } 605 606 if (*pathbuf->s && (Lstat(pathbuf->s, &sbuf) || !S_ISDIR(sbuf.st_mode) 607 #ifdef S_IFLINK 608 && ((globstar && !chase_symlinks) || !S_ISLNK(sbuf.st_mode)) 609 #endif 610 )) 611 return 0; 612 613 if (!(dirp = Opendir(pathbuf->s))) { 614 /* todo: don't call for ENOENT or ENOTDIR? */ 615 if ((pglob->gl_errfunc && (*pglob->gl_errfunc) (pathbuf->s, errno)) || 616 (pglob->gl_flags & GLOB_ERR)) 617 return (GLOB_ABEND); 618 else 619 return (0); 620 } 621 622 /* search directory for matching names */ 623 while ((dp = readdir(dirp)) != NULL) { 624 /* initial DOT must be matched literally */ 625 if (dp->d_name[0] == DOT && *pattern != DOT) 626 if (!(pglob->gl_flags & GLOB_DOT) || !dp->d_name[1] || 627 (dp->d_name[1] == DOT && !dp->d_name[2])) 628 continue; /*unless globdot and not . or .. */ 629 pathbuf->len = orig_len; 630 strbuf_append(pathbuf, dp->d_name); 631 strbuf_terminate(pathbuf); 632 633 if (globstar) { 634 #ifdef S_IFLNK 635 if (!chase_symlinks && 636 (Lstat(pathbuf->s, &sbuf) || S_ISLNK(sbuf.st_mode))) 637 continue; 638 #endif 639 if (match(pathbuf->s + orig_len, pattern, termstar, 640 (int)m_not) == no_match) 641 continue; 642 strbuf_append1(pathbuf, SEP); 643 strbuf_terminate(pathbuf); 644 if ((err = glob2(pathbuf, pglobstar, pglob, no_match)) != 0) 645 break; 646 } else { 647 if (match(pathbuf->s + orig_len, pattern, restpattern, 648 (int) m_not) == no_match) 649 continue; 650 if ((err = glob2(pathbuf, restpattern, pglob, no_match)) != 0) 651 break; 652 } 653 } 654 /* todo: check error from readdir? */ 655 closedir(dirp); 656 return (err); 657 } 658 659 660 /* 661 * Extend the gl_pathv member of a glob_t structure to accomodate a new item, 662 * add the new item, and update gl_pathc. 663 * 664 * This assumes the BSD realloc, which only copies the block when its size 665 * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic 666 * behavior. 667 * 668 * Return 0 if new item added, error code if memory couldn't be allocated. 669 * 670 * Invariant of the glob_t structure: 671 * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and 672 * gl_pathv points to (gl_offs + gl_pathc + 1) items. 673 */ 674 static void 675 globextend(const char *path, glob_t *pglob) 676 { 677 char **pathv; 678 int i; 679 size_t newsize; 680 681 newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); 682 pathv = xrealloc(pglob->gl_pathv, newsize); 683 684 if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { 685 /* first time around -- clear initial gl_offs items */ 686 pathv += pglob->gl_offs; 687 for (i = pglob->gl_offs; --i >= 0;) 688 *--pathv = NULL; 689 } 690 pglob->gl_pathv = pathv; 691 692 pathv[pglob->gl_offs + pglob->gl_pathc++] = strsave(path); 693 pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; 694 } 695 696 /* 697 * pattern matching function for filenames. 698 */ 699 static int 700 match(const char *name, const Char *pat, const Char *patend, int m_not) 701 { 702 int ok, negate_range; 703 const Char *patNext; 704 const char *nameNext, *nameStart, *nameEnd; 705 Char c; 706 707 patNext = pat; 708 nameStart = nameNext = name; 709 nameEnd = NULL; 710 711 while (pat < patend || *name) { 712 size_t lwk, pwk; 713 __Char wc, wk, wc1; 714 715 c = *pat; /* Only for M_MASK bits */ 716 if (*name == EOS) 717 nameEnd = name; 718 719 pwk = One_Char_mbtowc(&wc, pat, MB_LEN_MAX); 720 lwk = one_mbtowc(&wk, name, MB_LEN_MAX); 721 switch (c & M_MASK) { 722 case M_ALL: 723 while ((*(pat + pwk) & M_MASK) == M_ALL) { 724 pat += pwk; 725 pwk = One_Char_mbtowc(&wc, pat, MB_LEN_MAX); 726 } 727 patNext = pat; 728 nameNext = name + lwk; 729 pat += pwk; 730 continue; 731 case M_ONE: 732 if (*name == EOS) 733 break; 734 name += lwk; 735 pat += pwk; 736 continue; 737 case M_SET: 738 ok = 0; 739 if (*name == EOS) 740 break; 741 pat += pwk; 742 pwk = One_Char_mbtowc(&wc, pat, MB_LEN_MAX); 743 name += lwk; 744 if ((negate_range = ((*pat & M_MASK) == m_not)) != 0) { 745 pat += pwk; 746 pwk = One_Char_mbtowc(&wc, pat, MB_LEN_MAX); 747 } 748 wc1 = wc; 749 while ((*pat & M_MASK) != M_END) { 750 if ((*pat & M_MASK) == M_RNG) { 751 __Char wc2; 752 753 pat += pwk; 754 pwk = One_Char_mbtowc(&wc2, pat, MB_LEN_MAX); 755 if (globcharcoll(wc1, wk, 0) <= 0 && 756 globcharcoll(wk, wc2, 0) <= 0) 757 ok = 1; 758 } else if (wc == wk) 759 ok = 1; 760 pat += pwk; 761 wc1 = wc; 762 pwk = One_Char_mbtowc(&wc, pat, MB_LEN_MAX); 763 } 764 pat += pwk; 765 pwk = One_Char_mbtowc(&wc, pat, MB_LEN_MAX); 766 if (ok == negate_range) 767 break; 768 continue; 769 default: 770 if (*name == EOS || samecase(wk) != samecase(wc)) 771 break; 772 name += lwk; 773 pat += pwk; 774 continue; 775 } 776 if (nameNext != nameStart 777 && (nameEnd == NULL || nameNext <= nameEnd)) { 778 pat = patNext; 779 name = nameNext; 780 continue; 781 } 782 return 0; 783 } 784 return 1; 785 } 786 787 /* free allocated data belonging to a glob_t structure */ 788 void 789 globfree(glob_t *pglob) 790 { 791 int i; 792 char **pp; 793 794 if (pglob->gl_pathv != NULL) { 795 pp = pglob->gl_pathv + pglob->gl_offs; 796 for (i = pglob->gl_pathc; i--; ++pp) 797 if (*pp) 798 xfree(*pp), *pp = NULL; 799 xfree(pglob->gl_pathv), pglob->gl_pathv = NULL; 800 } 801 } 802