glob.c revision 1.4
1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #if defined(LIBC_SCCS) && !defined(lint) 38 /* from: static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; */ 39 static char *rcsid = "$Id: glob.c,v 1.4 1993/11/06 01:10:18 cgd Exp $"; 40 #endif /* LIBC_SCCS and not lint */ 41 42 /* 43 * glob(3) -- a superset of the one defined in POSIX 1003.2. 44 * 45 * The [!...] convention to negate a range is supported (SysV, Posix, ksh). 46 * 47 * Optional extra services, controlled by flags not defined by POSIX: 48 * 49 * GLOB_QUOTE: 50 * Escaping convention: \ inhibits any special meaning the following 51 * character might have (except \ at end of string is retained). 52 * GLOB_MAGCHAR: 53 * Set in gl_flags if pattern contained a globbing character. 54 * GLOB_NOMAGIC: 55 * Same as GLOB_NOCHECK, but it will only append pattern if it did 56 * not contain any magic characters. [Used in csh style globbing] 57 * GLOB_ALTDIRFUNC: 58 * Use alternately specified directory access functions. 59 * GLOB_TILDE: 60 * expand ~user/foo to the /home/dir/of/user/foo 61 * GLOB_BRACE: 62 * expand {1,2}{a,b} to 1a 1b 2a 2b 63 * gl_matchc: 64 * Number of matches in the current invocation of glob. 65 */ 66 67 #include <sys/param.h> 68 #include <sys/stat.h> 69 70 #include <ctype.h> 71 #include <dirent.h> 72 #include <errno.h> 73 #include <glob.h> 74 #include <pwd.h> 75 #include <stdio.h> 76 #include <stdlib.h> 77 #include <string.h> 78 #include <unistd.h> 79 80 #define DOLLAR '$' 81 #define DOT '.' 82 #define EOS '\0' 83 #define LBRACKET '[' 84 #define NOT '!' 85 #define QUESTION '?' 86 #define QUOTE '\\' 87 #define RANGE '-' 88 #define RBRACKET ']' 89 #define SEP '/' 90 #define STAR '*' 91 #define TILDE '~' 92 #define UNDERSCORE '_' 93 #define LBRACE '{' 94 #define RBRACE '}' 95 #define SLASH '/' 96 #define COMMA ',' 97 98 #ifndef DEBUG 99 100 #define M_QUOTE 0x8000 101 #define M_PROTECT 0x4000 102 #define M_MASK 0xffff 103 #define M_ASCII 0x00ff 104 105 typedef u_short Char; 106 107 #else 108 109 #define M_QUOTE 0x80 110 #define M_PROTECT 0x40 111 #define M_MASK 0xff 112 #define M_ASCII 0x7f 113 114 typedef char Char; 115 116 #endif 117 118 119 #define CHAR(c) ((Char)((c)&M_ASCII)) 120 #define META(c) ((Char)((c)|M_QUOTE)) 121 #define M_ALL META('*') 122 #define M_END META(']') 123 #define M_NOT META('!') 124 #define M_ONE META('?') 125 #define M_RNG META('-') 126 #define M_SET META('[') 127 #define ismeta(c) (((c)&M_QUOTE) != 0) 128 129 130 static int compare __P((const void *, const void *)); 131 static void g_Ctoc __P((const Char *, char *)); 132 static int g_lstat __P((Char *, struct stat *, glob_t *)); 133 static DIR *g_opendir __P((Char *, glob_t *)); 134 static Char *g_strchr __P((Char *, int)); 135 #ifdef notdef 136 static Char *g_strcat __P((Char *, const Char *)); 137 #endif 138 static int g_stat __P((Char *, struct stat *, glob_t *)); 139 static int glob0 __P((const Char *, glob_t *)); 140 static int glob1 __P((Char *, glob_t *)); 141 static int glob2 __P((Char *, Char *, Char *, glob_t *)); 142 static int glob3 __P((Char *, Char *, Char *, Char *, glob_t *)); 143 static int globextend __P((const Char *, glob_t *)); 144 static const Char * globtilde __P((const Char *, Char *, glob_t *)); 145 static int globexp1 __P((const Char *, glob_t *)); 146 static int globexp2 __P((const Char *, const Char *, glob_t *, int *)); 147 static int match __P((Char *, Char *, Char *)); 148 #ifdef DEBUG 149 static void qprintf __P((const char *, Char *)); 150 #endif 151 152 int 153 glob(pattern, flags, errfunc, pglob) 154 const char *pattern; 155 int flags, (*errfunc) __P((const char *, int)); 156 glob_t *pglob; 157 { 158 const u_char *patnext; 159 int c; 160 Char *bufnext, *bufend, patbuf[MAXPATHLEN+1]; 161 162 patnext = (u_char *) pattern; 163 if (!(flags & GLOB_APPEND)) { 164 pglob->gl_pathc = 0; 165 pglob->gl_pathv = NULL; 166 if (!(flags & GLOB_DOOFFS)) 167 pglob->gl_offs = 0; 168 } 169 pglob->gl_flags = flags & ~GLOB_MAGCHAR; 170 pglob->gl_errfunc = errfunc; 171 pglob->gl_matchc = 0; 172 173 bufnext = patbuf; 174 bufend = bufnext + MAXPATHLEN; 175 if (flags & GLOB_QUOTE) { 176 /* Protect the quoted characters. */ 177 while (bufnext < bufend && (c = *patnext++) != EOS) 178 if (c == QUOTE) { 179 if ((c = *patnext++) == EOS) { 180 c = QUOTE; 181 --patnext; 182 } 183 *bufnext++ = c | M_PROTECT; 184 } 185 else 186 *bufnext++ = c; 187 } 188 else 189 while (bufnext < bufend && (c = *patnext++) != EOS) 190 *bufnext++ = c; 191 *bufnext = EOS; 192 193 if (flags & GLOB_BRACE) 194 return globexp1(patbuf, pglob); 195 else 196 return glob0(patbuf, pglob); 197 } 198 199 /* 200 * Expand recursively a glob {} pattern. When there is no more expansion 201 * invoke the standard globbing routine to glob the rest of the magic 202 * characters 203 */ 204 static int globexp1(pattern, pglob) 205 const Char *pattern; 206 glob_t *pglob; 207 { 208 const Char* ptr = pattern; 209 int rv; 210 211 /* Protect a single {}, for find(1), like csh */ 212 if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) 213 return glob0(pattern, pglob); 214 215 while ((ptr = (const Char *) g_strchr((Char *) ptr, LBRACE)) != NULL) 216 if (!globexp2(ptr, pattern, pglob, &rv)) 217 return rv; 218 219 return glob0(pattern, pglob); 220 } 221 222 223 /* 224 * Recursive brace globbing helper. Tries to expand a single brace. 225 * If it succeeds then it invokes globexp1 with the new pattern. 226 * If it fails then it tries to glob the rest of the pattern and returns. 227 */ 228 static int globexp2(ptr, pattern, pglob, rv) 229 const Char *ptr, *pattern; 230 glob_t *pglob; 231 int *rv; 232 { 233 int i; 234 Char *lm, *ls; 235 const Char *pe, *pm, *pl; 236 Char patbuf[MAXPATHLEN + 1]; 237 238 /* copy part up to the brace */ 239 for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) 240 continue; 241 ls = lm; 242 243 /* Find the balanced brace */ 244 for (i = 0, pe = ++ptr; *pe; pe++) 245 if (*pe == LBRACKET) { 246 /* Ignore everything between [] */ 247 for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++) 248 continue; 249 if (*pe == EOS) { 250 /* 251 * We could not find a matching RBRACKET. 252 * Ignore and just look for RBRACE 253 */ 254 pe = pm; 255 } 256 } 257 else if (*pe == LBRACE) 258 i++; 259 else if (*pe == RBRACE) { 260 if (i == 0) 261 break; 262 i--; 263 } 264 265 /* Non matching braces; just glob the pattern */ 266 if (i != 0 || *pe == EOS) { 267 *rv = glob0(patbuf, pglob); 268 return 0; 269 } 270 271 for (i = 0, pl = pm = ptr; pm <= pe; pm++) 272 switch (*pm) { 273 case LBRACKET: 274 /* Ignore everything between [] */ 275 for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++) 276 continue; 277 if (*pm == EOS) { 278 /* 279 * We could not find a matching RBRACKET. 280 * Ignore and just look for RBRACE 281 */ 282 pm = pl; 283 } 284 break; 285 286 case LBRACE: 287 i++; 288 break; 289 290 case RBRACE: 291 if (i) { 292 i--; 293 break; 294 } 295 /* FALLTHROUGH */ 296 case COMMA: 297 if (i && *pm == COMMA) 298 break; 299 else { 300 /* Append the current string */ 301 for (lm = ls; (pl < pm); *lm++ = *pl++) 302 continue; 303 /* 304 * Append the rest of the pattern after the 305 * closing brace 306 */ 307 for (pl = pe + 1; (*lm++ = *pl++) != EOS;) 308 continue; 309 310 /* Expand the current pattern */ 311 #ifdef DEBUG 312 qprintf("globexp2:", patbuf); 313 #endif 314 *rv = globexp1(patbuf, pglob); 315 316 /* move after the comma, to the next string */ 317 pl = pm + 1; 318 } 319 break; 320 321 default: 322 break; 323 } 324 *rv = 0; 325 return 0; 326 } 327 328 329 330 /* 331 * expand tilde from the passwd file. 332 */ 333 static const Char * 334 globtilde(pattern, patbuf, pglob) 335 const Char *pattern; 336 Char *patbuf; 337 glob_t *pglob; 338 { 339 struct passwd *pwd; 340 char *h; 341 const Char *p; 342 Char *b; 343 344 if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE)) 345 return pattern; 346 347 /* Copy up to the end of the string or / */ 348 for (p = pattern + 1, h = (char *) patbuf; *p && *p != SLASH; 349 *h++ = *p++) 350 continue; 351 352 *h = EOS; 353 354 if (((char *) patbuf)[0] == EOS) { 355 /* 356 * handle a plain ~ or ~/ by expanding $HOME 357 * first and then trying the password file 358 */ 359 if ((h = getenv("HOME")) == NULL) { 360 if ((pwd = getpwuid(getuid())) == NULL) 361 return pattern; 362 else 363 h = pwd->pw_dir; 364 } 365 } 366 else { 367 /* 368 * Expand a ~user 369 */ 370 if ((pwd = getpwnam((char*) patbuf)) == NULL) 371 return pattern; 372 else 373 h = pwd->pw_dir; 374 } 375 376 /* Copy the home directory */ 377 for (b = patbuf; *h; *b++ = *h++) 378 continue; 379 380 /* Append the rest of the pattern */ 381 while ((*b++ = *p++) != EOS) 382 continue; 383 384 return patbuf; 385 } 386 387 388 /* 389 * The main glob() routine: compiles the pattern (optionally processing 390 * quotes), calls glob1() to do the real pattern matching, and finally 391 * sorts the list (unless unsorted operation is requested). Returns 0 392 * if things went well, nonzero if errors occurred. It is not an error 393 * to find no matches. 394 */ 395 static int 396 glob0(pattern, pglob) 397 const Char *pattern; 398 glob_t *pglob; 399 { 400 const Char *qpatnext; 401 int c, err, oldpathc; 402 Char *bufnext, patbuf[MAXPATHLEN+1]; 403 404 qpatnext = globtilde(pattern, patbuf, pglob); 405 oldpathc = pglob->gl_pathc; 406 bufnext = patbuf; 407 408 /* We don't need to check for buffer overflow any more. */ 409 while ((c = *qpatnext++) != EOS) { 410 switch (c) { 411 case LBRACKET: 412 c = *qpatnext; 413 if (c == NOT) 414 ++qpatnext; 415 if (*qpatnext == EOS || 416 g_strchr((Char *) qpatnext+1, RBRACKET) == NULL) { 417 *bufnext++ = LBRACKET; 418 if (c == NOT) 419 --qpatnext; 420 break; 421 } 422 *bufnext++ = M_SET; 423 if (c == NOT) 424 *bufnext++ = M_NOT; 425 c = *qpatnext++; 426 do { 427 *bufnext++ = CHAR(c); 428 if (*qpatnext == RANGE && 429 (c = qpatnext[1]) != RBRACKET) { 430 *bufnext++ = M_RNG; 431 *bufnext++ = CHAR(c); 432 qpatnext += 2; 433 } 434 } while ((c = *qpatnext++) != RBRACKET); 435 pglob->gl_flags |= GLOB_MAGCHAR; 436 *bufnext++ = M_END; 437 break; 438 case QUESTION: 439 pglob->gl_flags |= GLOB_MAGCHAR; 440 *bufnext++ = M_ONE; 441 break; 442 case STAR: 443 pglob->gl_flags |= GLOB_MAGCHAR; 444 /* collapse adjacent stars to one, 445 * to avoid exponential behavior 446 */ 447 if (bufnext == patbuf || bufnext[-1] != M_ALL) 448 *bufnext++ = M_ALL; 449 break; 450 default: 451 *bufnext++ = CHAR(c); 452 break; 453 } 454 } 455 *bufnext = EOS; 456 #ifdef DEBUG 457 qprintf("glob0:", patbuf); 458 #endif 459 460 if ((err = glob1(patbuf, pglob)) != 0) 461 return(err); 462 463 /* 464 * If there was no match we are going to append the pattern 465 * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified 466 * and the pattern did not contain any magic characters 467 * GLOB_NOMAGIC is there just for compatibility with csh. 468 */ 469 if (pglob->gl_pathc == oldpathc && 470 ((pglob->gl_flags & GLOB_NOCHECK) || 471 ((pglob->gl_flags & GLOB_NOMAGIC) && 472 !(pglob->gl_flags & GLOB_MAGCHAR)))) 473 return(globextend(pattern, pglob)); 474 else if (!(pglob->gl_flags & GLOB_NOSORT)) 475 qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, 476 pglob->gl_pathc - oldpathc, sizeof(char *), compare); 477 return(0); 478 } 479 480 static int 481 compare(p, q) 482 const void *p, *q; 483 { 484 return(strcmp(*(char **)p, *(char **)q)); 485 } 486 487 static int 488 glob1(pattern, pglob) 489 Char *pattern; 490 glob_t *pglob; 491 { 492 Char pathbuf[MAXPATHLEN+1]; 493 494 /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ 495 if (*pattern == EOS) 496 return(0); 497 return(glob2(pathbuf, pathbuf, pattern, pglob)); 498 } 499 500 /* 501 * The functions glob2 and glob3 are mutually recursive; there is one level 502 * of recursion for each segment in the pattern that contains one or more 503 * meta characters. 504 */ 505 static int 506 glob2(pathbuf, pathend, pattern, pglob) 507 Char *pathbuf, *pathend, *pattern; 508 glob_t *pglob; 509 { 510 struct stat sb; 511 Char *p, *q; 512 int anymeta; 513 514 /* 515 * Loop over pattern segments until end of pattern or until 516 * segment with meta character found. 517 */ 518 for (anymeta = 0;;) { 519 if (*pattern == EOS) { /* End of pattern? */ 520 *pathend = EOS; 521 if (g_lstat(pathbuf, &sb, pglob)) 522 return(0); 523 524 if (((pglob->gl_flags & GLOB_MARK) && 525 pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) 526 || (S_ISLNK(sb.st_mode) && 527 (g_stat(pathbuf, &sb, pglob) == 0) && 528 S_ISDIR(sb.st_mode)))) { 529 *pathend++ = SEP; 530 *pathend = EOS; 531 } 532 ++pglob->gl_matchc; 533 return(globextend(pathbuf, pglob)); 534 } 535 536 /* Find end of next segment, copy tentatively to pathend. */ 537 q = pathend; 538 p = pattern; 539 while (*p != EOS && *p != SEP) { 540 if (ismeta(*p)) 541 anymeta = 1; 542 *q++ = *p++; 543 } 544 545 if (!anymeta) { /* No expansion, do next segment. */ 546 pathend = q; 547 pattern = p; 548 while (*pattern == SEP) 549 *pathend++ = *pattern++; 550 } else /* Need expansion, recurse. */ 551 return(glob3(pathbuf, pathend, pattern, p, pglob)); 552 } 553 /* NOTREACHED */ 554 } 555 556 static int 557 glob3(pathbuf, pathend, pattern, restpattern, pglob) 558 Char *pathbuf, *pathend, *pattern, *restpattern; 559 glob_t *pglob; 560 { 561 register struct dirent *dp; 562 DIR *dirp; 563 int err; 564 char buf[MAXPATHLEN]; 565 566 /* 567 * The readdirfunc declaration can't be prototyped, because it is 568 * assigned, below, to two functions which are prototyped in glob.h 569 * and dirent.h as taking pointers to differently typed opaque 570 * structures. 571 */ 572 struct dirent *(*readdirfunc)(); 573 574 *pathend = EOS; 575 errno = 0; 576 577 if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { 578 /* TODO: don't call for ENOENT or ENOTDIR? */ 579 if (pglob->gl_errfunc) { 580 g_Ctoc(pathbuf, buf); 581 if (pglob->gl_errfunc(buf, errno) || 582 pglob->gl_flags & GLOB_ERR) 583 return (GLOB_ABEND); 584 } 585 return(0); 586 } 587 588 err = 0; 589 590 /* Search directory for matching names. */ 591 if (pglob->gl_flags & GLOB_ALTDIRFUNC) 592 readdirfunc = pglob->gl_readdir; 593 else 594 readdirfunc = readdir; 595 while ((dp = (*readdirfunc)(dirp))) { 596 register u_char *sc; 597 register Char *dc; 598 599 /* Initial DOT must be matched literally. */ 600 if (dp->d_name[0] == DOT && *pattern != DOT) 601 continue; 602 for (sc = (u_char *) dp->d_name, dc = pathend; 603 (*dc++ = *sc++) != EOS;) 604 continue; 605 if (!match(pathend, pattern, restpattern)) { 606 *pathend = EOS; 607 continue; 608 } 609 err = glob2(pathbuf, --dc, restpattern, pglob); 610 if (err) 611 break; 612 } 613 614 if (pglob->gl_flags & GLOB_ALTDIRFUNC) 615 (*pglob->gl_closedir)(dirp); 616 else 617 closedir(dirp); 618 return(err); 619 } 620 621 622 /* 623 * Extend the gl_pathv member of a glob_t structure to accomodate a new item, 624 * add the new item, and update gl_pathc. 625 * 626 * This assumes the BSD realloc, which only copies the block when its size 627 * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic 628 * behavior. 629 * 630 * Return 0 if new item added, error code if memory couldn't be allocated. 631 * 632 * Invariant of the glob_t structure: 633 * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and 634 * gl_pathv points to (gl_offs + gl_pathc + 1) items. 635 */ 636 static int 637 globextend(path, pglob) 638 const Char *path; 639 glob_t *pglob; 640 { 641 register char **pathv; 642 register int i; 643 u_int newsize; 644 char *copy; 645 const Char *p; 646 647 newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); 648 pathv = pglob->gl_pathv ? 649 realloc((char *)pglob->gl_pathv, newsize) : 650 malloc(newsize); 651 if (pathv == NULL) 652 return(GLOB_NOSPACE); 653 654 if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { 655 /* first time around -- clear initial gl_offs items */ 656 pathv += pglob->gl_offs; 657 for (i = pglob->gl_offs; --i >= 0; ) 658 *--pathv = NULL; 659 } 660 pglob->gl_pathv = pathv; 661 662 for (p = path; *p++;) 663 continue; 664 if ((copy = malloc(p - path)) != NULL) { 665 g_Ctoc(path, copy); 666 pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; 667 } 668 pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; 669 return(copy == NULL ? GLOB_NOSPACE : 0); 670 } 671 672 673 /* 674 * pattern matching function for filenames. Each occurrence of the * 675 * pattern causes a recursion level. 676 */ 677 static int 678 match(name, pat, patend) 679 register Char *name, *pat, *patend; 680 { 681 int ok, negate_range; 682 Char c, k; 683 684 while (pat < patend) { 685 c = *pat++; 686 switch (c & M_MASK) { 687 case M_ALL: 688 if (pat == patend) 689 return(1); 690 do 691 if (match(name, pat, patend)) 692 return(1); 693 while (*name++ != EOS); 694 return(0); 695 case M_ONE: 696 if (*name++ == EOS) 697 return(0); 698 break; 699 case M_SET: 700 ok = 0; 701 if ((k = *name++) == EOS) 702 return(0); 703 if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS) 704 ++pat; 705 while (((c = *pat++) & M_MASK) != M_END) 706 if ((*pat & M_MASK) == M_RNG) { 707 if (c <= k && k <= pat[1]) 708 ok = 1; 709 pat += 2; 710 } else if (c == k) 711 ok = 1; 712 if (ok == negate_range) 713 return(0); 714 break; 715 default: 716 if (*name++ != c) 717 return(0); 718 break; 719 } 720 } 721 return(*name == EOS); 722 } 723 724 /* Free allocated data belonging to a glob_t structure. */ 725 void 726 globfree(pglob) 727 glob_t *pglob; 728 { 729 register int i; 730 register char **pp; 731 732 if (pglob->gl_pathv != NULL) { 733 pp = pglob->gl_pathv + pglob->gl_offs; 734 for (i = pglob->gl_pathc; i--; ++pp) 735 if (*pp) 736 free(*pp); 737 free(pglob->gl_pathv); 738 } 739 } 740 741 static DIR * 742 g_opendir(str, pglob) 743 register Char *str; 744 glob_t *pglob; 745 { 746 char buf[MAXPATHLEN]; 747 748 if (!*str) 749 strcpy(buf, "."); 750 else 751 g_Ctoc(str, buf); 752 753 if (pglob->gl_flags & GLOB_ALTDIRFUNC) 754 return((*pglob->gl_opendir)(buf)); 755 756 return(opendir(buf)); 757 } 758 759 static int 760 g_lstat(fn, sb, pglob) 761 register Char *fn; 762 struct stat *sb; 763 glob_t *pglob; 764 { 765 char buf[MAXPATHLEN]; 766 767 g_Ctoc(fn, buf); 768 if (pglob->gl_flags & GLOB_ALTDIRFUNC) 769 return((*pglob->gl_lstat)(buf, sb)); 770 return(lstat(buf, sb)); 771 } 772 773 static int 774 g_stat(fn, sb, pglob) 775 register Char *fn; 776 struct stat *sb; 777 glob_t *pglob; 778 { 779 char buf[MAXPATHLEN]; 780 781 g_Ctoc(fn, buf); 782 if (pglob->gl_flags & GLOB_ALTDIRFUNC) 783 return((*pglob->gl_stat)(buf, sb)); 784 return(stat(buf, sb)); 785 } 786 787 static Char * 788 g_strchr(str, ch) 789 Char *str; 790 int ch; 791 { 792 do { 793 if (*str == ch) 794 return (str); 795 } while (*str++); 796 return (NULL); 797 } 798 799 #ifdef notdef 800 static Char * 801 g_strcat(dst, src) 802 Char *dst; 803 const Char* src; 804 { 805 Char *sdst = dst; 806 807 while (*dst++) 808 continue; 809 --dst; 810 while((*dst++ = *src++) != EOS) 811 continue; 812 813 return (sdst); 814 } 815 #endif 816 817 static void 818 g_Ctoc(str, buf) 819 register const Char *str; 820 char *buf; 821 { 822 register char *dc; 823 824 for (dc = buf; (*dc++ = *str++) != EOS;) 825 continue; 826 } 827 828 #ifdef DEBUG 829 static void 830 qprintf(str, s) 831 const char *str; 832 register Char *s; 833 { 834 register Char *p; 835 836 (void)printf("%s:\n", str); 837 for (p = s; *p; p++) 838 (void)printf("%c", CHAR(*p)); 839 (void)printf("\n"); 840 for (p = s; *p; p++) 841 (void)printf("%c", *p & M_PROTECT ? '"' : ' '); 842 (void)printf("\n"); 843 for (p = s; *p; p++) 844 (void)printf("%c", ismeta(*p) ? '_' : ' '); 845 (void)printf("\n"); 846 } 847 #endif 848
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