dlls/ntdll/string.c

   1 /*
   2  * NTDLL string functions
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  * Copyright 2000 Jon Griffiths
   6  * Copyright 2003 Thomas Mertes
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <ctype.h>
  27 #include <stdarg.h>
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <search.h>
  32
  33 #include "windef.h"
  34 #include "winternl.h"
  35
  36
  37 /*********************************************************************
  38  *                  memchr   (NTDLL.@)
  39  */
  40 void * __cdecl NTDLL_memchr( const void *ptr, int c, size_t n )
  41 {
  42     return memchr( ptr, c, n );
  43 }
  44
  45
  46 /*********************************************************************
  47  *                  memcmp   (NTDLL.@)
  48  */
  49 int __cdecl NTDLL_memcmp( const void *ptr1, const void *ptr2, size_t n )
  50 {
  51     return memcmp( ptr1, ptr2, n );
  52 }
  53
  54
  55 /*********************************************************************
  56  *                  memcpy   (NTDLL.@)
  57  *
  58  * NOTES
  59  *  Behaves like memmove.
  60  */
  61 void * __cdecl NTDLL_memcpy( void *dst, const void *src, size_t n )
  62 {
  63     return memmove( dst, src, n );
  64 }
  65
  66
  67 /*********************************************************************
  68  *                  memmove   (NTDLL.@)
  69  */
  70 void * __cdecl NTDLL_memmove( void *dst, const void *src, size_t n )
  71 {
  72     return memmove( dst, src, n );
  73 }
  74
  75
  76 /*********************************************************************
  77  *                  memset   (NTDLL.@)
  78  */
  79 void * __cdecl NTDLL_memset( void *dst, int c, size_t n )
  80 {
  81     return memset( dst, c, n );
  82 }
  83
  84
  85 /*********************************************************************
  86  *                  bsearch   (NTDLL.@)
  87  */
  88 void * __cdecl NTDLL_bsearch( const void *key, const void *base, size_t nmemb,
  89                               size_t size, int (*compar)(const void *, const void *) )
  90 {
  91     return bsearch( key, base, nmemb, size, compar );
  92 }
  93
  94
  95 /*********************************************************************
  96  *                  qsort   (NTDLL.@)
  97  */
  98 void __cdecl NTDLL_qsort( void *base, size_t nmemb, size_t size,
  99                           int(*compar)(const void *, const void *) )
 100 {
 101     return qsort( base, nmemb, size, compar );
 102 }
 103
 104
 105 /*********************************************************************
 106  *                  _lfind   (NTDLL.@)
 107  */
 108 void * __cdecl _lfind( const void *key, const void *base, size_t *nmemb,
 109                        size_t size, int(*compar)(const void *, const void *) )
 110 {
 111     return lfind( key, base, nmemb, size, compar );
 112 }
 113
 114
 115 /*********************************************************************
 116  *                  strcat   (NTDLL.@)
 117  */
 118 char * __cdecl NTDLL_strcat( char *dst, const char *src )
 119 {
 120     return strcat( dst, src );
 121 }
 122
 123
 124 /*********************************************************************
 125  *                  strchr   (NTDLL.@)
 126  */
 127 char * __cdecl NTDLL_strchr( const char *str, int c )
 128 {
 129     return strchr( str, c );
 130 }
 131
 132
 133 /*********************************************************************
 134  *                  strcmp   (NTDLL.@)
 135  */
 136 int __cdecl NTDLL_strcmp( const char *str1, const char *str2 )
 137 {
 138     return strcmp( str1, str2 );
 139 }
 140
 141
 142 /*********************************************************************
 143  *                  strcpy   (NTDLL.@)
 144  */
 145 char * __cdecl NTDLL_strcpy( char *dst, const char *src )
 146 {
 147     return strcpy( dst, src );
 148 }
 149
 150
 151 /*********************************************************************
 152  *                  strcspn   (NTDLL.@)
 153  */
 154 size_t __cdecl NTDLL_strcspn( const char *str, const char *reject )
 155 {
 156     return strcspn( str, reject );
 157 }
 158
 159
 160 /*********************************************************************
 161  *                  strlen   (NTDLL.@)
 162  */
 163 size_t __cdecl NTDLL_strlen( const char *str )
 164 {
 165     return strlen( str );
 166 }
 167
 168
 169 /*********************************************************************
 170  *                  strncat   (NTDLL.@)
 171  */
 172 char * __cdecl NTDLL_strncat( char *dst, const char *src, size_t len )
 173 {
 174     return strncat( dst, src, len );
 175 }
 176
 177
 178 /*********************************************************************
 179  *                  strncmp   (NTDLL.@)
 180  */
 181 int __cdecl NTDLL_strncmp( const char *str1, const char *str2, size_t len )
 182 {
 183     return strncmp( str1, str2, len );
 184 }
 185
 186
 187 /*********************************************************************
 188  *                  strncpy   (NTDLL.@)
 189  */
 190 char * __cdecl NTDLL_strncpy( char *dst, const char *src, size_t len )
 191 {
 192     return strncpy( dst, src, len );
 193 }
 194
 195
 196 /*********************************************************************
 197  *                  strpbrk   (NTDLL.@)
 198  */
 199 char * __cdecl NTDLL_strpbrk( const char *str, const char *accept )
 200 {
 201     return strpbrk( str, accept );
 202 }
 203
 204
 205 /*********************************************************************
 206  *                  strrchr   (NTDLL.@)
 207  */
 208 char * __cdecl NTDLL_strrchr( const char *str, int c )
 209 {
 210     return strrchr( str, c );
 211 }
 212
 213
 214 /*********************************************************************
 215  *                  strspn   (NTDLL.@)
 216  */
 217 size_t __cdecl NTDLL_strspn( const char *str, const char *accept )
 218 {
 219     return strspn( str, accept );
 220 }
 221
 222
 223 /*********************************************************************
 224  *                  strstr   (NTDLL.@)
 225  */
 226 char * __cdecl NTDLL_strstr( const char *haystack, const char *needle )
 227 {
 228     return strstr( haystack, needle );
 229 }
 230
 231
 232 /*********************************************************************
 233  *                  _memccpy   (NTDLL.@)
 234  */
 235 void * __cdecl _memccpy( void *dst, const void *src, int c, size_t n )
 236 {
 237     return memccpy( dst, src, c, n );
 238 }
 239
 240
 241 /*********************************************************************
 242  *                  _memicmp   (NTDLL.@)
 243  *
 244  * Compare two blocks of memory as strings, ignoring case.
 245  *
 246  * PARAMS
 247  *  s1  [I] First string to compare to s2
 248  *  s2  [I] Second string to compare to s1
 249  *  len [I] Number of bytes to compare
 250  *
 251  * RETURNS
 252  *  An integer less than, equal to, or greater than zero indicating that
 253  *  s1 is less than, equal to or greater than s2 respectively.
 254  *
 255  * NOTES
 256  *  Any Nul characters in s1 or s2 are ignored. This function always
 257  *  compares up to len bytes or the first place where s1 and s2 differ.
 258  */
 259 INT __cdecl _memicmp( LPCSTR s1, LPCSTR s2, DWORD len )
 260 {
 261     int ret = 0;
 262     while (len--)
 263     {
 264         if ((ret = tolower(*s1) - tolower(*s2))) break;
 265         s1++;
 266         s2++;
 267     }
 268     return ret;
 269 }
 270
 271
 272 /*********************************************************************
 273  *                  _stricmp   (NTDLL.@)
 274  *                  _strcmpi   (NTDLL.@)
 275  */
 276 int __cdecl _stricmp( LPCSTR str1, LPCSTR str2 )
 277 {
 278     return strcasecmp( str1, str2 );
 279 }
 280
 281
 282 /*********************************************************************
 283  *                  _strnicmp   (NTDLL.@)
 284  */
 285 int __cdecl _strnicmp( LPCSTR str1, LPCSTR str2, size_t n )
 286 {
 287     return strncasecmp( str1, str2, n );
 288 }
 289
 290
 291 /*********************************************************************
 292  *                  _strupr   (NTDLL.@)
 293  *
 294  * Convert a string to upper case.
 295  *
 296  * PARAMS
 297  *  str [I/O] String to convert
 298  *
 299  * RETURNS
 300  *  str. There is no error return, if str is NULL or invalid, this
 301  *  function will crash.
 302  */
 303 LPSTR __cdecl _strupr( LPSTR str )
 304 {
 305     LPSTR ret = str;
 306     for ( ; *str; str++) *str = toupper(*str);
 307     return ret;
 308 }
 309
 310
 311 /*********************************************************************
 312  *                  _strlwr   (NTDLL.@)
 313  *
 314  * Convert a string to lowercase
 315  *
 316  * PARAMS
 317  *  str [I/O] String to convert
 318  *
 319  * RETURNS
 320  *  str. There is no error return, if str is NULL or invalid, this
 321  *  function will crash.
 322  */
 323 LPSTR __cdecl _strlwr( LPSTR str )
 324 {
 325     LPSTR ret = str;
 326     for ( ; *str; str++) *str = tolower(*str);
 327     return ret;
 328 }
 329
 330
 331 /*********************************************************************
 332  *                  tolower   (NTDLL.@)
 333  */
 334 int __cdecl NTDLL_tolower( int c )
 335 {
 336     return tolower( c );
 337 }
 338
 339
 340 /*********************************************************************
 341  *                  toupper   (NTDLL.@)
 342  */
 343 int __cdecl NTDLL_toupper( int c )
 344 {
 345     return toupper( c );
 346 }
 347
 348
 349 /*********************************************************************
 350  *                  isalnum   (NTDLL.@)
 351  */
 352 int __cdecl NTDLL_isalnum( int c )
 353 {
 354     return isalnum( c );
 355 }
 356
 357
 358 /*********************************************************************
 359  *                  isalpha   (NTDLL.@)
 360  */
 361 int __cdecl NTDLL_isalpha( int c )
 362 {
 363     return isalpha( c );
 364 }
 365
 366
 367 /*********************************************************************
 368  *                  iscntrl   (NTDLL.@)
 369  */
 370 int __cdecl NTDLL_iscntrl( int c )
 371 {
 372     return iscntrl( c );
 373 }
 374
 375
 376 /*********************************************************************
 377  *                  isdigit   (NTDLL.@)
 378  */
 379 int __cdecl NTDLL_isdigit( int c )
 380 {
 381     return isdigit( c );
 382 }
 383
 384
 385 /*********************************************************************
 386  *                  isgraph   (NTDLL.@)
 387  */
 388 int __cdecl NTDLL_isgraph( int c )
 389 {
 390     return isgraph( c );
 391 }
 392
 393
 394 /*********************************************************************
 395  *                  islower   (NTDLL.@)
 396  */
 397 int __cdecl NTDLL_islower( int c )
 398 {
 399     return islower( c );
 400 }
 401
 402
 403 /*********************************************************************
 404  *                  isprint   (NTDLL.@)
 405  */
 406 int __cdecl NTDLL_isprint( int c )
 407 {
 408     return isprint( c );
 409 }
 410
 411
 412 /*********************************************************************
 413  *                  ispunct   (NTDLL.@)
 414  */
 415 int __cdecl NTDLL_ispunct( int c )
 416 {
 417     return ispunct( c );
 418 }
 419
 420
 421 /*********************************************************************
 422  *                  isspace   (NTDLL.@)
 423  */
 424 int __cdecl NTDLL_isspace( int c )
 425 {
 426     return isspace( c );
 427 }
 428
 429
 430 /*********************************************************************
 431  *                  isupper   (NTDLL.@)
 432  */
 433 int __cdecl NTDLL_isupper( int c )
 434 {
 435     return isupper( c );
 436 }
 437
 438
 439 /*********************************************************************
 440  *                  isxdigit   (NTDLL.@)
 441  */
 442 int __cdecl NTDLL_isxdigit( int c )
 443 {
 444     return isxdigit( c );
 445 }
 446
 447
 448 /*********************************************************************
 449  *                  strtol   (NTDLL.@)
 450  */
 451 long __cdecl NTDLL_strtol( const char *nptr, char **endptr, int base )
 452 {
 453     return strtol( nptr, endptr, base );
 454 }
 455
 456
 457 /*********************************************************************
 458  *                  strtoul   (NTDLL.@)
 459  */
 460 unsigned long __cdecl NTDLL_strtoul( const char *nptr, char **endptr, int base )
 461 {
 462     return strtoul( nptr, endptr, base );
 463 }
 464
 465
 466 /*********************************************************************
 467  *                  atoi   (NTDLL.@)
 468  */
 469 int __cdecl NTDLL_atoi( const char *nptr )
 470 {
 471     return atoi( nptr );
 472 }
 473
 474
 475 /*********************************************************************
 476  *                  atol   (NTDLL.@)
 477  */
 478 long __cdecl NTDLL_atol( const char *nptr )
 479 {
 480     return atol( nptr );
 481 }
 482
 483
 484 /*********************************************************************
 485  *      _ultoa   (NTDLL.@)
 486  *
 487  * Convert an unsigned long integer to a string.
 488  *
 489  * RETURNS
 490  *  str.
 491  *
 492  * NOTES
 493  *  - Converts value to a Nul terminated string which is copied to str.
 494  *  - The maximum length of the copied str is 33 bytes.
 495  *  - Does not check if radix is in the range of 2 to 36.
 496  *  - If str is NULL it crashes, as the native function does.
 497  */
 498 char * __cdecl _ultoa(
 499     unsigned long value, /* [I] Value to be converted */
 500     char *str,           /* [O] Destination for the converted value */
 501     int radix)           /* [I] Number base for conversion */
 502 {
 503     char buffer[33];
 504     char *pos;
 505     int digit;
 506
 507     pos = &buffer[32];
 508     *pos = '\0';
 509
 510     do {
 511         digit = value % radix;
 512         value = value / radix;
 513         if (digit < 10) {
 514             *--pos = '0' + digit;
 515         } else {
 516             *--pos = 'a' + digit - 10;
 517         } /* if */
 518     } while (value != 0L);
 519
 520     memcpy(str, pos, &buffer[32] - pos + 1);
 521     return str;
 522 }
 523
 524
 525 /*********************************************************************
 526  *      _ltoa   (NTDLL.@)
 527  *
 528  * Convert a long integer to a string.
 529  *
 530  * RETURNS
 531  *  str.
 532  *
 533  * NOTES
 534  *  - Converts value to a Nul terminated string which is copied to str.
 535  *  - The maximum length of the copied str is 33 bytes. If radix
 536  *  is 10 and value is negative, the value is converted with sign.
 537  *  - Does not check if radix is in the range of 2 to 36.
 538  *  - If str is NULL it crashes, as the native function does.
 539  */
 540 char * __cdecl _ltoa(
 541     long value, /* [I] Value to be converted */
 542     char *str,  /* [O] Destination for the converted value */
 543     int radix)  /* [I] Number base for conversion */
 544 {
 545     unsigned long val;
 546     int negative;
 547     char buffer[33];
 548     char *pos;
 549     int digit;
 550
 551     if (value < 0 && radix == 10) {
 552         negative = 1;
 553         val = -value;
 554     } else {
 555         negative = 0;
 556         val = value;
 557     } /* if */
 558
 559     pos = &buffer[32];
 560     *pos = '\0';
 561
 562     do {
 563         digit = val % radix;
 564         val = val / radix;
 565         if (digit < 10) {
 566             *--pos = '0' + digit;
 567         } else {
 568             *--pos = 'a' + digit - 10;
 569         } /* if */
 570     } while (val != 0L);
 571
 572     if (negative) {
 573         *--pos = '-';
 574     } /* if */
 575
 576     memcpy(str, pos, &buffer[32] - pos + 1);
 577     return str;
 578 }
 579
 580
 581 /*********************************************************************
 582  *      _itoa    (NTDLL.@)
 583  *
 584  * Converts an integer to a string.
 585  *
 586  * RETURNS
 587  *  str.
 588  *
 589  * NOTES
 590  *  - Converts value to a '\0' terminated string which is copied to str.
 591  *  - The maximum length of the copied str is 33 bytes. If radix
 592  *  is 10 and value is negative, the value is converted with sign.
 593  *  - Does not check if radix is in the range of 2 to 36.
 594  *  - If str is NULL it crashes, as the native function does.
 595  */
 596 char * __cdecl _itoa(
 597     int value, /* [I] Value to be converted */
 598     char *str, /* [O] Destination for the converted value */
 599     int radix) /* [I] Number base for conversion */
 600 {
 601     return _ltoa(value, str, radix);
 602 }
 603
 604
 605 /*********************************************************************
 606  *      _ui64toa   (NTDLL.@)
 607  *
 608  * Converts a large unsigned integer to a string.
 609  *
 610  * RETURNS
 611  *  str.
 612  *
 613  * NOTES
 614  *  - Converts value to a '\0' terminated string which is copied to str.
 615  *  - The maximum length of the copied str is 65 bytes.
 616  *  - Does not check if radix is in the range of 2 to 36.
 617  *  - If str is NULL it crashes, as the native function does.
 618  */
 619 char * __cdecl _ui64toa(
 620     ULONGLONG value, /* [I] Value to be converted */
 621     char *str,       /* [O] Destination for the converted value */
 622     int radix)       /* [I] Number base for conversion */
 623 {
 624     char buffer[65];
 625     char *pos;
 626     int digit;
 627
 628     pos = &buffer[64];
 629     *pos = '\0';
 630
 631     do {
 632         digit = value % radix;
 633         value = value / radix;
 634         if (digit < 10) {
 635             *--pos = '0' + digit;
 636         } else {
 637             *--pos = 'a' + digit - 10;
 638         } /* if */
 639     } while (value != 0L);
 640
 641     memcpy(str, pos, &buffer[64] - pos + 1);
 642     return str;
 643 }
 644
 645
 646 /*********************************************************************
 647  *      _i64toa   (NTDLL.@)
 648  *
 649  * Converts a large integer to a string.
 650  *
 651  * RETURNS
 652  *  str.
 653  *
 654  * NOTES
 655  *  - Converts value to a Nul terminated string which is copied to str.
 656  *  - The maximum length of the copied str is 65 bytes. If radix
 657  *  is 10 and value is negative, the value is converted with sign.
 658  *  - Does not check if radix is in the range of 2 to 36.
 659  *  - If str is NULL it crashes, as the native function does.
 660  *
 661  * DIFFERENCES
 662  * - The native DLL converts negative values (for base 10) wrong:
 663  *|                     -1 is converted to -18446744073709551615
 664  *|                     -2 is converted to -18446744073709551614
 665  *|   -9223372036854775807 is converted to  -9223372036854775809
 666  *|   -9223372036854775808 is converted to  -9223372036854775808
 667  *   The native msvcrt _i64toa function and our ntdll _i64toa function
 668  *   do not have this bug.
 669  */
 670 char * __cdecl _i64toa(
 671     LONGLONG value, /* [I] Value to be converted */
 672     char *str,      /* [O] Destination for the converted value */
 673     int radix)      /* [I] Number base for conversion */
 674 {
 675     ULONGLONG val;
 676     int negative;
 677     char buffer[65];
 678     char *pos;
 679     int digit;
 680
 681     if (value < 0 && radix == 10) {
 682         negative = 1;
 683         val = -value;
 684     } else {
 685         negative = 0;
 686         val = value;
 687     } /* if */
 688
 689     pos = &buffer[64];
 690     *pos = '\0';
 691
 692     do {
 693         digit = val % radix;
 694         val = val / radix;
 695         if (digit < 10) {
 696             *--pos = '0' + digit;
 697         } else {
 698             *--pos = 'a' + digit - 10;
 699         } /* if */
 700     } while (val != 0L);
 701
 702     if (negative) {
 703         *--pos = '-';
 704     } /* if */
 705
 706     memcpy(str, pos, &buffer[64] - pos + 1);
 707     return str;
 708 }
 709
 710
 711 /*********************************************************************
 712  *      _atoi64   (NTDLL.@)
 713  *
 714  * Convert a string to a large integer.
 715  *
 716  * PARAMS
 717  *  str [I] String to be converted
 718  *
 719  * RETURNS
 720  *  Success: The integer value represented by str.
 721  *  Failure: 0. Note that this cannot be distinguished from a successful
 722  *           return, if the string contains "0".
 723  *
 724  * NOTES
 725  *  - Accepts: {whitespace} [+|-] {digits}
 726  *  - No check is made for value overflow, only the lower 64 bits are assigned.
 727  *  - If str is NULL it crashes, as the native function does.
 728  */
 729 LONGLONG __cdecl _atoi64( char *str )
 730 {
 731     ULONGLONG RunningTotal = 0;
 732     char bMinus = 0;
 733
 734     while (*str == ' ' || (*str >= '\011' && *str <= '\015')) {
 735         str++;
 736     } /* while */
 737
 738     if (*str == '+') {
 739         str++;
 740     } else if (*str == '-') {
 741         bMinus = 1;
 742         str++;
 743     } /* if */
 744
 745     while (*str >= '0' && *str <= '9') {
 746         RunningTotal = RunningTotal * 10 + *str - '0';
 747         str++;
 748     } /* while */
 749
 750     return bMinus ? -RunningTotal : RunningTotal;
 751 }
 752
 753
 754 /*********************************************************************
 755  *                  sprintf   (NTDLL.@)
 756  */
 757 int __cdecl NTDLL_sprintf( char *str, const char *format, ... )
 758 {
 759     int ret;
 760     va_list valist;
 761     va_start( valist, format );
 762     ret = vsprintf( str, format, valist );
 763     va_end( valist );
 764     return ret;
 765 }
 766
 767
 768 /*********************************************************************
 769  *                  vsprintf   (NTDLL.@)
 770  */
 771 int __cdecl NTDLL_vsprintf( char *str, const char *format, va_list args )
 772 {
 773     return vsprintf( str, format, args );
 774 }
 775
 776
 777 /*********************************************************************
 778  *                  _snprintf   (NTDLL.@)
 779  */
 780 int __cdecl _snprintf( char *str, size_t len, const char *format, ... )
 781 {
 782     int ret;
 783     va_list valist;
 784     va_start( valist, format );
 785     ret = vsnprintf( str, len, format, valist );
 786     va_end( valist );
 787     return ret;
 788 }
 789
 790
 791 /*********************************************************************
 792  *                  _vsnprintf   (NTDLL.@)
 793  */
 794 int __cdecl _vsnprintf( char *str, size_t len, const char *format, va_list args )
 795 {
 796     return vsnprintf( str, len, format, args );
 797 }
 798
 799
 800 /*********************************************************************
 801  *                  sscanf   (NTDLL.@)
 802  */
 803 int __cdecl NTDLL_sscanf( const char *str, const char *format, ... )
 804 {
 805     int ret;
 806     va_list valist;
 807     va_start( valist, format );
 808     ret = vsscanf( str, format, valist );
 809     va_end( valist );
 810     return ret;
 811 }
 812
 813
 814 /*********************************************************************
 815  *              _splitpath (NTDLL.@)
 816  *
 817  * Split a path into its component pieces.
 818  *
 819  * PARAMS
 820  *  inpath [I] Path to split
 821  *  drv    [O] Destination for drive component (e.g. "A:"). Must be at least 3 characters.
 822  *  dir    [O] Destination for directory component. Should be at least MAX_PATH characters.
 823  *  fname  [O] Destination for File name component. Should be at least MAX_PATH characters.
 824  *  ext    [O] Destination for file extension component. Should be at least MAX_PATH characters.
 825  *
 826  * RETURNS
 827  *  Nothing.
 828  */
 829 void __cdecl _splitpath(const char* inpath, char * drv, char * dir,
 830                         char* fname, char * ext )
 831 {
 832     const char *p, *end;
 833
 834     if (inpath[0] && inpath[1] == ':')
 835     {
 836         if (drv)
 837         {
 838             drv[0] = inpath[0];
 839             drv[1] = inpath[1];
 840             drv[2] = 0;
 841         }
 842         inpath += 2;
 843     }
 844     else if (drv) drv[0] = 0;
 845
 846     /* look for end of directory part */
 847     end = NULL;
 848     for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
 849
 850     if (end)  /* got a directory */
 851     {
 852         if (dir)
 853         {
 854             memcpy( dir, inpath, end - inpath );
 855             dir[end - inpath] = 0;
 856         }
 857         inpath = end;
 858     }
 859     else if (dir) dir[0] = 0;
 860
 861     /* look for extension: what's after the last dot */
 862     end = NULL;
 863     for (p = inpath; *p; p++) if (*p == '.') end = p;
 864
 865     if (!end) end = p; /* there's no extension */
 866
 867     if (fname)
 868     {
 869         memcpy( fname, inpath, end - inpath );
 870         fname[end - inpath] = 0;
 871     }
 872     if (ext) strcpy( ext, end );
 873 }