dlls/msvcrt/mbcs.c

   1 /*
   2  * msvcrt.dll mbcs functions
   3  *
   4  * Copyright 1999 Alexandre Julliard
   5  * Copyright 2000 Jon Griffths
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  *
  21  * FIXME
  22  * Not currently binary compatible with win32. MSVCRT_mbctype must be
  23  * populated correctly and the ismb* functions should reference it.
  24  */
  25
  26 #include "msvcrt.h"
  27 #include "wine/unicode.h"
  28 #include "wine/debug.h"
  29 #include "msvcrt/mbctype.h"
  30 #include "msvcrt/mbstring.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  33
  34 unsigned char MSVCRT_mbctype[257];
  35 static int g_mbcp_is_multibyte = 0;
  36
  37 int MSVCRT___mb_cur_max = 1;
  38 extern int MSVCRT___lc_collate_cp;
  39
  40 /* It seems that the data about valid trail bytes is not available from kernel32
  41  * so we have to store is here. The format is the same as for lead bytes in CPINFO */
  42 struct cp_extra_info_t
  43 {
  44     int cp;
  45     BYTE TrailBytes[MAX_LEADBYTES];
  46 };
  47
  48 static struct cp_extra_info_t g_cpextrainfo[] =
  49 {
  50     {932, {0x40, 0x7e, 0x80, 0xfc, 0, 0}},
  51     {936, {0x40, 0xfe, 0, 0}},
  52     {949, {0x41, 0xfe, 0, 0}},
  53     {950, {0x40, 0x7e, 0xa1, 0xfe, 0, 0}},
  54     {20932, {1, 255, 0, 0}},  /* seems to give different results on different systems */
  55     {0, {1, 255, 0, 0}}       /* match all with FIXME */
  56 };
  57
  58 static MSVCRT_wchar_t msvcrt_mbc_to_wc(unsigned int ch)
  59 {
  60   MSVCRT_wchar_t chW;
  61   char mbch[2];
  62   int n_chars;
  63
  64   if (ch <= 0xff) {
  65     mbch[0] = ch;
  66     n_chars = 1;
  67   } else {
  68     mbch[0] = (ch >> 8) & 0xff;
  69     mbch[1] = ch & 0xff;
  70     n_chars = 2;
  71   }
  72   if (!MultiByteToWideChar(MSVCRT___lc_codepage, 0, mbch, n_chars, &chW, 1))
  73   {
  74     WARN("MultiByteToWideChar failed on %x\n", ch);
  75     return 0;
  76   }
  77   return chW;
  78 }
  79
  80 static inline size_t u_strlen( const unsigned char *str )
  81 {
  82   return strlen( (const char*) str );
  83 }
  84
  85 static inline unsigned char* u_strncat( unsigned char* dst, const unsigned char* src, size_t len )
  86 {
  87   return (unsigned char*)strncat( (char*)dst, (const char*)src, len);
  88 }
  89
  90 static inline int u_strcmp( const unsigned char *s1, const unsigned char *s2 )
  91 {
  92   return strcmp( (const char*)s1, (const char*)s2 );
  93 }
  94
  95 static inline int u_strcasecmp( const unsigned char *s1, const unsigned char *s2 )
  96 {
  97   return strcasecmp( (const char*)s1, (const char*)s2 );
  98 }
  99
 100 static inline int u_strncmp( const unsigned char *s1, const unsigned char *s2, size_t len )
 101 {
 102   return strncmp( (const char*)s1, (const char*)s2, len );
 103 }
 104
 105 static inline int u_strncasecmp( const unsigned char *s1, const unsigned char *s2, size_t len )
 106 {
 107   return strncasecmp( (const char*)s1, (const char*)s2, len );
 108 }
 109
 110 static inline unsigned char *u_strchr( const unsigned char *s, unsigned char x )
 111 {
 112   return (unsigned char*) strchr( (const char*)s, x );
 113 }
 114
 115 static inline unsigned char *u_strrchr( const unsigned char *s, unsigned char x )
 116 {
 117   return (unsigned char*) strrchr( (const char*)s, x );
 118 }
 119
 120 static inline unsigned char *u_strtok( unsigned char *s, const unsigned char *delim )
 121 {
 122   return (unsigned char*) strtok( (char*)s, (const char*)delim );
 123 }
 124
 125 static inline unsigned char *u__strset( unsigned char *s, unsigned char c )
 126 {
 127   return (unsigned char*) _strset( (char*)s, c);
 128 }
 129
 130 static inline unsigned char *u__strnset( unsigned char *s, unsigned char c, size_t len )
 131 {
 132   return (unsigned char*) _strnset( (char*)s, c, len );
 133 }
 134
 135 static inline size_t u_strcspn( const unsigned char *s, const unsigned char *rej )
 136 {
 137   return strcspn( (const char *)s, (const char*)rej );
 138 }
 139
 140 /*********************************************************************
 141  *              __p__mbctype (MSVCRT.@)
 142  */
 143 unsigned char* CDECL __p__mbctype(void)
 144 {
 145   return MSVCRT_mbctype;
 146 }
 147
 148 /*********************************************************************
 149  *              __p___mb_cur_max(MSVCRT.@)
 150  */
 151 int* CDECL __p___mb_cur_max(void)
 152 {
 153   return &MSVCRT___mb_cur_max;
 154 }
 155
 156 /*********************************************************************
 157  *              _setmbcp (MSVCRT.@)
 158  */
 159 int CDECL _setmbcp(int cp)
 160 {
 161   int newcp;
 162   CPINFO cpi;
 163   BYTE *bytes;
 164   WORD chartypes[256];
 165   WORD *curr_type;
 166   char bufA[256];
 167   WCHAR bufW[256];
 168   int charcount;
 169   int ret;
 170   int i;
 171
 172   switch (cp)
 173   {
 174     case _MB_CP_ANSI:
 175       newcp = GetACP();
 176       break;
 177     case _MB_CP_OEM:
 178       newcp = GetOEMCP();
 179       break;
 180     case _MB_CP_LOCALE:
 181       newcp = MSVCRT___lc_codepage;
 182       break;
 183     case _MB_CP_SBCS:
 184       newcp = 20127;   /* ASCII */
 185       break;
 186     default:
 187       newcp = cp;
 188       break;
 189   }
 190
 191   if (!GetCPInfo(newcp, &cpi))
 192   {
 193     WARN("Codepage %d not found\n", newcp);
 194     msvcrt_set_errno(MSVCRT_EINVAL);
 195     return -1;
 196   }
 197
 198   /* setup the _mbctype */
 199   memset(MSVCRT_mbctype, 0, sizeof(MSVCRT_mbctype));
 200
 201   bytes = cpi.LeadByte;
 202   while (bytes[0] || bytes[1])
 203   {
 204     for (i = bytes[0]; i <= bytes[1]; i++)
 205       MSVCRT_mbctype[i + 1] |= _M1;
 206     bytes += 2;
 207   }
 208
 209   if (cpi.MaxCharSize > 1)
 210   {
 211     /* trail bytes not available through kernel32 but stored in a structure in msvcrt */
 212     struct cp_extra_info_t *cpextra = g_cpextrainfo;
 213
 214     g_mbcp_is_multibyte = 1;
 215     while (TRUE)
 216     {
 217       if (cpextra->cp == 0 || cpextra->cp == newcp)
 218       {
 219         if (cpextra->cp == 0)
 220           FIXME("trail bytes data not available for DBCS codepage %d - assuming all bytes\n", newcp);
 221
 222         bytes = cpextra->TrailBytes;
 223         while (bytes[0] || bytes[1])
 224         {
 225           for (i = bytes[0]; i <= bytes[1]; i++)
 226             MSVCRT_mbctype[i + 1] |= _M2;
 227           bytes += 2;
 228         }
 229         break;
 230       }
 231       cpextra++;
 232     }
 233   }
 234   else
 235     g_mbcp_is_multibyte = 0;
 236
 237   /* we can't use GetStringTypeA directly because we don't have a locale - only a code page
 238    */
 239   charcount = 0;
 240   for (i = 0; i < 256; i++)
 241     if (!(MSVCRT_mbctype[i + 1] & _M1))
 242       bufA[charcount++] = i;
 243
 244   ret = MultiByteToWideChar(newcp, 0, bufA, charcount, bufW, charcount);
 245   if (ret != charcount)
 246     ERR("MultiByteToWideChar of chars failed for cp %d, ret=%d (exp %d), error=%d\n", newcp, ret, charcount, GetLastError());
 247
 248   GetStringTypeW(CT_CTYPE1, bufW, charcount, chartypes);
 249
 250   curr_type = chartypes;
 251   for (i = 0; i < 256; i++)
 252     if (!(MSVCRT_mbctype[i + 1] & _M1))
 253     {
 254         if ((*curr_type) & C1_UPPER)
 255             MSVCRT_mbctype[i + 1] |= _SBUP;
 256         if ((*curr_type) & C1_LOWER)
 257             MSVCRT_mbctype[i + 1] |= _SBLOW;
 258         curr_type++;
 259     }
 260
 261   if (newcp == 932)   /* CP932 only - set _MP and _MS */
 262   {
 263     /* On Windows it's possible to calculate the _MP and _MS from CT_CTYPE1
 264      * and CT_CTYPE3. But as of Wine 0.9.43 we return wrong values what makes
 265      * it hard. As this is set only for codepage 932 we hardcode it what gives
 266      * also faster execution.
 267      */
 268     for (i = 161; i <= 165; i++)
 269       MSVCRT_mbctype[i + 1] |= _MP;
 270     for (i = 166; i <= 223; i++)
 271       MSVCRT_mbctype[i + 1] |= _MS;
 272   }
 273
 274   MSVCRT___lc_collate_cp = MSVCRT___lc_codepage = newcp;
 275   TRACE("(%d) -> %d\n", cp, MSVCRT___lc_codepage);
 276   return 0;
 277 }
 278
 279 /*********************************************************************
 280  *              _getmbcp (MSVCRT.@)
 281  */
 282 int CDECL _getmbcp(void)
 283 {
 284   return MSVCRT___lc_codepage;
 285 }
 286
 287 /*********************************************************************
 288  *              _mbsnextc(MSVCRT.@)
 289  */
 290 unsigned int CDECL _mbsnextc(const unsigned char* str)
 291 {
 292   if(_ismbblead(*str))
 293     return *str << 8 | str[1];
 294   return *str;
 295 }
 296
 297 /*********************************************************************
 298  *              _mbctolower(MSVCRT.@)
 299  */
 300 unsigned int CDECL _mbctolower(unsigned int c)
 301 {
 302     if (MSVCRT_isleadbyte(c))
 303     {
 304       FIXME("Handle MBC chars\n");
 305       return c;
 306     }
 307     return tolower(c); /* ASCII CP or SB char */
 308 }
 309
 310 /*********************************************************************
 311  *              _mbctoupper(MSVCRT.@)
 312  */
 313 unsigned int CDECL _mbctoupper(unsigned int c)
 314 {
 315     if (MSVCRT_isleadbyte(c))
 316     {
 317       FIXME("Handle MBC chars\n");
 318       return c;
 319     }
 320     return toupper(c); /* ASCII CP or SB char */
 321 }
 322
 323 /*********************************************************************
 324  *              _mbsdec(MSVCRT.@)
 325  */
 326 unsigned char* CDECL _mbsdec(const unsigned char* start, const unsigned char* cur)
 327 {
 328   if(MSVCRT___mb_cur_max > 1)
 329     return (unsigned char *)(_ismbstrail(start,cur-1) ? cur - 2 : cur -1);
 330
 331   return (unsigned char *)cur - 1; /* ASCII CP or SB char */
 332 }
 333
 334 /*********************************************************************
 335  *              _mbsinc(MSVCRT.@)
 336  */
 337 unsigned char* CDECL _mbsinc(const unsigned char* str)
 338 {
 339   return (unsigned char *)(str + _mbclen(str));
 340 }
 341
 342 /*********************************************************************
 343  *              _mbsninc(MSVCRT.@)
 344  */
 345 unsigned char* CDECL _mbsninc(const unsigned char* str, MSVCRT_size_t num)
 346 {
 347   if(!str)
 348     return NULL;
 349
 350   while (num > 0 && *str)
 351   {
 352     if (_ismbblead(*str))
 353     {
 354       if (!*(str+1))
 355          break;
 356       str++;
 357     }
 358     str++;
 359     num--;
 360   }
 361
 362   return (unsigned char*)str;
 363 }
 364
 365 /*********************************************************************
 366  *              _mbclen(MSVCRT.@)
 367  */
 368 unsigned int CDECL _mbclen(const unsigned char* str)
 369 {
 370   return _ismbblead(*str) ? 2 : 1;
 371 }
 372
 373 /*********************************************************************
 374  *              _mbslen(MSVCRT.@)
 375  */
 376 MSVCRT_size_t CDECL _mbslen(const unsigned char* str)
 377 {
 378   MSVCRT_size_t len = 0;
 379   while(*str)
 380   {
 381     if (_ismbblead(*str))
 382     {
 383       str++;
 384       if (!*str)  /* count only full chars */
 385         break;
 386     }
 387     str++;
 388     len++;
 389   }
 390   return len;
 391 }
 392
 393 /*********************************************************************
 394  *              _mbccpy(MSVCRT.@)
 395  */
 396 void CDECL _mbccpy(unsigned char* dest, const unsigned char* src)
 397 {
 398   *dest = *src;
 399   if(_ismbblead(*src))
 400     *++dest = *++src; /* MB char */
 401 }
 402
 403 /*********************************************************************
 404  *              _mbsncpy(MSVCRT.@)
 405  * REMARKS
 406  *  The parameter n is the number or characters to copy, not the size of
 407  *  the buffer. Use _mbsnbcpy for a function analogical to strncpy
 408  */
 409 unsigned char* CDECL _mbsncpy(unsigned char* dst, const unsigned char* src, MSVCRT_size_t n)
 410 {
 411   unsigned char* ret = dst;
 412   if(!n)
 413     return dst;
 414   if (g_mbcp_is_multibyte)
 415   {
 416     while (*src && n)
 417     {
 418       n--;
 419       if (_ismbblead(*src))
 420       {
 421         if (!*(src+1))
 422         {
 423             *dst++ = 0;
 424             *dst++ = 0;
 425             break;
 426         }
 427
 428         *dst++ = *src++;
 429       }
 430
 431       *dst++ = *src++;
 432     }
 433   }
 434   else
 435   {
 436     while (n)
 437     {
 438         n--;
 439         if (!(*dst++ = *src++)) break;
 440     }
 441   }
 442   while (n--) *dst++ = 0;
 443   return ret;
 444 }
 445
 446 /*********************************************************************
 447  *              _mbsnbcpy(MSVCRT.@)
 448  * REMARKS
 449  *  Like strncpy this function doesn't enforce the string to be
 450  *  NUL-terminated
 451  */
 452 unsigned char* CDECL _mbsnbcpy(unsigned char* dst, const unsigned char* src, MSVCRT_size_t n)
 453 {
 454   unsigned char* ret = dst;
 455   if(!n)
 456     return dst;
 457   if(g_mbcp_is_multibyte)
 458   {
 459     int is_lead = 0;
 460     while (*src && n)
 461     {
 462       is_lead = (!is_lead && _ismbblead(*src));
 463       n--;
 464       *dst++ = *src++;
 465     }
 466
 467     if (is_lead) /* if string ends with a lead, remove it */
 468         *(dst - 1) = 0;
 469   }
 470   else
 471   {
 472     while (n)
 473     {
 474         n--;
 475         if (!(*dst++ = *src++)) break;
 476     }
 477   }
 478   while (n--) *dst++ = 0;
 479   return ret;
 480 }
 481
 482 /*********************************************************************
 483  *              _mbscmp(MSVCRT.@)
 484  */
 485 int CDECL _mbscmp(const unsigned char* str, const unsigned char* cmp)
 486 {
 487   if(MSVCRT___mb_cur_max > 1)
 488   {
 489     unsigned int strc, cmpc;
 490     do {
 491       if(!*str)
 492         return *cmp ? -1 : 0;
 493       if(!*cmp)
 494         return 1;
 495       strc = _mbsnextc(str);
 496       cmpc = _mbsnextc(cmp);
 497       if(strc != cmpc)
 498         return strc < cmpc ? -1 : 1;
 499       str +=(strc > 255) ? 2 : 1;
 500       cmp +=(strc > 255) ? 2 : 1; /* equal, use same increment */
 501     } while(1);
 502   }
 503   return u_strcmp(str, cmp); /* ASCII CP */
 504 }
 505
 506 /*********************************************************************
 507  *              _mbsicoll(MSVCRT.@)
 508  * FIXME: handle locales.
 509  */
 510 int CDECL _mbsicoll(const unsigned char* str, const unsigned char* cmp)
 511 {
 512   if(MSVCRT___mb_cur_max > 1)
 513   {
 514     unsigned int strc, cmpc;
 515     do {
 516       if(!*str)
 517         return *cmp ? -1 : 0;
 518       if(!*cmp)
 519         return 1;
 520       strc = _mbctolower(_mbsnextc(str));
 521       cmpc = _mbctolower(_mbsnextc(cmp));
 522       if(strc != cmpc)
 523         return strc < cmpc ? -1 : 1;
 524       str +=(strc > 255) ? 2 : 1;
 525       cmp +=(strc > 255) ? 2 : 1; /* equal, use same increment */
 526     } while(1);
 527   }
 528   return u_strcasecmp(str, cmp); /* ASCII CP */
 529 }
 530
 531 /*********************************************************************
 532  *              _mbscoll(MSVCRT.@)
 533  * Performs a case-sensitive comparison according to the current code page
 534  * RETURN
 535  *   _NLSCMPERROR if error
 536  * FIXME: handle locales.
 537  */
 538 int CDECL _mbscoll(const unsigned char* str, const unsigned char* cmp)
 539 {
 540   if(MSVCRT___mb_cur_max > 1)
 541   {
 542     unsigned int strc, cmpc;
 543     do {
 544       if(!*str)
 545         return *cmp ? -1 : 0;
 546       if(!*cmp)
 547         return 1;
 548       strc = _mbsnextc(str);
 549       cmpc = _mbsnextc(cmp);
 550       if(strc != cmpc)
 551         return strc < cmpc ? -1 : 1;
 552       str +=(strc > 255) ? 2 : 1;
 553       cmp +=(strc > 255) ? 2 : 1; /* equal, use same increment */
 554     } while(1);
 555   }
 556   return u_strcmp(str, cmp); /* ASCII CP */
 557 }
 558
 559
 560 /*********************************************************************
 561  *              _mbsicmp(MSVCRT.@)
 562  */
 563 int CDECL _mbsicmp(const unsigned char* str, const unsigned char* cmp)
 564 {
 565   if(MSVCRT___mb_cur_max > 1)
 566   {
 567     unsigned int strc, cmpc;
 568     do {
 569       if(!*str)
 570         return *cmp ? -1 : 0;
 571       if(!*cmp)
 572         return 1;
 573       strc = _mbctolower(_mbsnextc(str));
 574       cmpc = _mbctolower(_mbsnextc(cmp));
 575       if(strc != cmpc)
 576         return strc < cmpc ? -1 : 1;
 577       str +=(strc > 255) ? 2 : 1;
 578       cmp +=(strc > 255) ? 2 : 1; /* equal, use same increment */
 579     } while(1);
 580   }
 581   return u_strcasecmp(str, cmp); /* ASCII CP */
 582 }
 583
 584 /*********************************************************************
 585  *              _mbsncmp(MSVCRT.@)
 586  */
 587 int CDECL _mbsncmp(const unsigned char* str, const unsigned char* cmp, MSVCRT_size_t len)
 588 {
 589   if(!len)
 590     return 0;
 591
 592   if(MSVCRT___mb_cur_max > 1)
 593   {
 594     unsigned int strc, cmpc;
 595     while(len--)
 596     {
 597       int inc;
 598       if(!*str)
 599         return *cmp ? -1 : 0;
 600       if(!*cmp)
 601         return 1;
 602       strc = _mbsnextc(str);
 603       cmpc = _mbsnextc(cmp);
 604       if(strc != cmpc)
 605         return strc < cmpc ? -1 : 1;
 606       inc=(strc > 255) ? 2 : 1; /* Equal, use same increment */
 607       str += inc;
 608       cmp += inc;
 609     }
 610     return 0; /* Matched len chars */
 611   }
 612   return u_strncmp(str, cmp, len); /* ASCII CP */
 613 }
 614
 615 /*********************************************************************
 616  *              _mbsnbcmp(MSVCRT.@)
 617  */
 618 int CDECL _mbsnbcmp(const unsigned char* str, const unsigned char* cmp, MSVCRT_size_t len)
 619 {
 620   if (!len)
 621     return 0;
 622   if(MSVCRT___mb_cur_max > 1)
 623   {
 624     unsigned int strc, cmpc;
 625     while (len)
 626     {
 627       int clen;
 628       if(!*str)
 629         return *cmp ? -1 : 0;
 630       if(!*cmp)
 631         return 1;
 632       if (MSVCRT_isleadbyte(*str))
 633       {
 634         strc=(len>=2)?_mbsnextc(str):0;
 635         clen=2;
 636       }
 637       else
 638       {
 639         strc=*str;
 640         clen=1;
 641       }
 642       if (MSVCRT_isleadbyte(*cmp))
 643         cmpc=(len>=2)?_mbsnextc(cmp):0;
 644       else
 645         cmpc=*str;
 646       if(strc != cmpc)
 647         return strc < cmpc ? -1 : 1;
 648       len -= clen;
 649       str += clen;
 650       cmp += clen;
 651     }
 652     return 0; /* Matched len chars */
 653   }
 654   return u_strncmp(str,cmp,len);
 655 }
 656
 657 /*********************************************************************
 658  *              _mbsnicmp(MSVCRT.@)
 659  *
 660  * Compare two multibyte strings case insensitively to 'len' characters.
 661  */
 662 int CDECL _mbsnicmp(const unsigned char* str, const unsigned char* cmp, MSVCRT_size_t len)
 663 {
 664   /* FIXME: No tolower() for mb strings yet */
 665   if(MSVCRT___mb_cur_max > 1)
 666   {
 667     unsigned int strc, cmpc;
 668     while(len--)
 669     {
 670       if(!*str)
 671         return *cmp ? -1 : 0;
 672       if(!*cmp)
 673         return 1;
 674       strc = _mbctolower(_mbsnextc(str));
 675       cmpc = _mbctolower(_mbsnextc(cmp));
 676       if(strc != cmpc)
 677         return strc < cmpc ? -1 : 1;
 678       str +=(strc > 255) ? 2 : 1;
 679       cmp +=(strc > 255) ? 2 : 1; /* Equal, use same increment */
 680     }
 681     return 0; /* Matched len chars */
 682   }
 683   return u_strncasecmp(str, cmp, len); /* ASCII CP */
 684 }
 685
 686 /*********************************************************************
 687  *              _mbsnbicmp(MSVCRT.@)
 688  */
 689 int CDECL _mbsnbicmp(const unsigned char* str, const unsigned char* cmp, MSVCRT_size_t len)
 690 {
 691   if (!len)
 692     return 0;
 693   if(MSVCRT___mb_cur_max > 1)
 694   {
 695     unsigned int strc, cmpc;
 696     while (len)
 697     {
 698       int clen;
 699       if(!*str)
 700         return *cmp ? -1 : 0;
 701       if(!*cmp)
 702         return 1;
 703       if (MSVCRT_isleadbyte(*str))
 704       {
 705         strc=(len>=2)?_mbsnextc(str):0;
 706         clen=2;
 707       }
 708       else
 709       {
 710         strc=*str;
 711         clen=1;
 712       }
 713       if (MSVCRT_isleadbyte(*cmp))
 714         cmpc=(len>=2)?_mbsnextc(cmp):0;
 715       else
 716         cmpc=*str;
 717       strc = _mbctolower(strc);
 718       cmpc = _mbctolower(cmpc);
 719       if(strc != cmpc)
 720         return strc < cmpc ? -1 : 1;
 721       len -= clen;
 722       str += clen;
 723       cmp += clen;
 724     }
 725     return 0; /* Matched len bytes */
 726   }
 727   return u_strncasecmp(str,cmp,len);
 728 }
 729
 730 /*********************************************************************
 731  *              _mbscat (MSVCRT.@)
 732  */
 733 unsigned char * CDECL _mbscat( unsigned char *dst, const unsigned char *src )
 734 {
 735     strcat( (char *)dst, (const char *)src );
 736     return dst;
 737 }
 738
 739 /*********************************************************************
 740  *              _mbscpy (MSVCRT.@)
 741  */
 742 unsigned char* CDECL _mbscpy( unsigned char *dst, const unsigned char *src )
 743 {
 744     strcpy( (char *)dst, (const char *)src );
 745     return dst;
 746 }
 747
 748 /*********************************************************************
 749  *              _mbsstr (MSVCRT.@)
 750  */
 751 unsigned char * CDECL _mbsstr(const unsigned char *haystack, const unsigned char *needle)
 752 {
 753     return (unsigned char *)strstr( (const char *)haystack, (const char *)needle );
 754 }
 755
 756 /*********************************************************************
 757  *              _mbschr(MSVCRT.@)
 758  *
 759  * Find a multibyte character in a multibyte string.
 760  */
 761 unsigned char* CDECL _mbschr(const unsigned char* s, unsigned int x)
 762 {
 763   if(MSVCRT___mb_cur_max > 1)
 764   {
 765     unsigned int c;
 766     while (1)
 767     {
 768       c = _mbsnextc(s);
 769       if (c == x)
 770         return (unsigned char*)s;
 771       if (!c)
 772         return NULL;
 773       s += c > 255 ? 2 : 1;
 774     }
 775   }
 776   return u_strchr(s, x); /* ASCII CP */
 777 }
 778
 779 /*********************************************************************
 780  *              _mbsrchr(MSVCRT.@)
 781  */
 782 unsigned char* CDECL _mbsrchr(const unsigned char* s, unsigned int x)
 783 {
 784   if(MSVCRT___mb_cur_max > 1)
 785   {
 786     unsigned int c;
 787     unsigned char* match=NULL;
 788     if(!s)
 789       return NULL;
 790     while (1) {
 791       c = _mbsnextc(s);
 792       if (c == x)
 793         match=(unsigned char*)s;
 794       if (!c)
 795         return match;
 796       s +=(c > 255) ? 2 : 1;
 797     }
 798   }
 799   return u_strrchr(s, x);
 800 }
 801
 802 /*********************************************************************
 803  *              _mbstok(MSVCRT.@)
 804  *
 805  * Find and extract tokens from strings
 806  */
 807 unsigned char* CDECL _mbstok(unsigned char *str, const unsigned char *delim)
 808 {
 809     thread_data_t *data = msvcrt_get_thread_data();
 810     unsigned char *ret;
 811
 812     if(MSVCRT___mb_cur_max > 1)
 813     {
 814         unsigned int c;
 815
 816         if (!str)
 817             if (!(str = data->mbstok_next)) return NULL;
 818
 819         while ((c = _mbsnextc(str)) && _mbschr(delim, c)) {
 820             str += c > 255 ? 2 : 1;
 821         }
 822         if (!*str) return NULL;
 823         ret = str++;
 824         while ((c = _mbsnextc(str)) && !_mbschr(delim, c)) {
 825             str += c > 255 ? 2 : 1;
 826         }
 827         if (*str) {
 828             *str++ = 0;
 829             if (c > 255) *str++ = 0;
 830         }
 831         data->mbstok_next = str;
 832         return ret;
 833     }
 834     return u_strtok(str, delim); /* ASCII CP */
 835 }
 836
 837 /*********************************************************************
 838  *              mbtowc(MSVCRT.@)
 839  */
 840 int CDECL MSVCRT_mbtowc(MSVCRT_wchar_t *dst, const char* str, MSVCRT_size_t n)
 841 {
 842     /* temp var needed because MultiByteToWideChar wants non NULL destination */
 843     MSVCRT_wchar_t tmpdst = '\0';
 844
 845     if(n <= 0 || !str)
 846         return 0;
 847     if(!MultiByteToWideChar(CP_ACP, 0, str, n, &tmpdst, 1))
 848         return -1;
 849     if(dst)
 850         *dst = tmpdst;
 851     /* return the number of bytes from src that have been used */
 852     if(!*str)
 853         return 0;
 854     if(n >= 2 && MSVCRT_isleadbyte(*str) && str[1])
 855         return 2;
 856     return 1;
 857 }
 858
 859 /*********************************************************************
 860  *              _mbbtombc(MSVCRT.@)
 861  */
 862 unsigned int CDECL _mbbtombc(unsigned int c)
 863 {
 864   if(MSVCRT___mb_cur_max > 1 &&
 865      ((c >= 0x20 && c <=0x7e) ||(c >= 0xa1 && c <= 0xdf)))
 866   {
 867     /* FIXME: I can't get this function to return anything
 868      * different from what I pass it...
 869      */
 870   }
 871   return c;  /* ASCII CP or no MB char */
 872 }
 873
 874 /*********************************************************************
 875  *              _mbbtype(MSVCRT.@)
 876  */
 877 int CDECL _mbbtype(unsigned char c, int type)
 878 {
 879     if (type == 1)
 880     {
 881         if ((c >= 0x20 && c <= 0x7e) || (c >= 0xa1 && c <= 0xdf))
 882             return _MBC_SINGLE;
 883         else if ((c >= 0x40 && c <= 0x7e) || (c >= 0x80 && c <= 0xfc))
 884             return _MBC_TRAIL;
 885         else
 886             return _MBC_ILLEGAL;
 887     }
 888     else
 889     {
 890         if ((c >= 0x20 && c <= 0x7e) || (c >= 0xa1 && c <= 0xdf))
 891             return _MBC_SINGLE;
 892         else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xfc))
 893             return _MBC_LEAD;
 894         else
 895             return _MBC_ILLEGAL;
 896     }
 897 }
 898
 899 /*********************************************************************
 900  *              _ismbbkana(MSVCRT.@)
 901  */
 902 int CDECL _ismbbkana(unsigned int c)
 903 {
 904   /* FIXME: use lc_ctype when supported, not lc_all */
 905   if(MSVCRT___lc_codepage == 932)
 906   {
 907     /* Japanese/Katakana, CP 932 */
 908     return (c >= 0xa1 && c <= 0xdf);
 909   }
 910   return 0;
 911 }
 912
 913 /*********************************************************************
 914  *              _ismbcdigit(MSVCRT.@)
 915  */
 916 int CDECL _ismbcdigit(unsigned int ch)
 917 {
 918     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 919     return (get_char_typeW( wch ) & C1_DIGIT);
 920 }
 921
 922 /*********************************************************************
 923  *              _ismbcgraph(MSVCRT.@)
 924  */
 925 int CDECL _ismbcgraph(unsigned int ch)
 926 {
 927     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 928     return (get_char_typeW( wch ) & (C1_UPPER | C1_LOWER | C1_DIGIT | C1_PUNCT | C1_ALPHA));
 929 }
 930
 931 /*********************************************************************
 932  *              _ismbcalpha (MSVCRT.@)
 933  */
 934 int CDECL _ismbcalpha(unsigned int ch)
 935 {
 936     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 937     return (get_char_typeW( wch ) & C1_ALPHA);
 938 }
 939
 940 /*********************************************************************
 941  *              _ismbclower (MSVCRT.@)
 942  */
 943 int CDECL _ismbclower(unsigned int ch)
 944 {
 945     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 946     return (get_char_typeW( wch ) & C1_UPPER);
 947 }
 948
 949 /*********************************************************************
 950  *              _ismbcupper (MSVCRT.@)
 951  */
 952 int CDECL _ismbcupper(unsigned int ch)
 953 {
 954     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 955     return (get_char_typeW( wch ) & C1_LOWER);
 956 }
 957
 958 /*********************************************************************
 959  *              _ismbcsymbol(MSVCRT.@)
 960  */
 961 int CDECL _ismbcsymbol(unsigned int ch)
 962 {
 963     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 964     WORD ctype;
 965     if (!GetStringTypeW(CT_CTYPE3, &wch, 1, &ctype))
 966     {
 967         WARN("GetStringTypeW failed on %x\n", ch);
 968         return 0;
 969     }
 970     return ((ctype & C3_SYMBOL) != 0);
 971 }
 972
 973 /*********************************************************************
 974  *              _ismbcalnum (MSVCRT.@)
 975  */
 976 int CDECL _ismbcalnum(unsigned int ch)
 977 {
 978     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 979     return (get_char_typeW( wch ) & (C1_ALPHA | C1_DIGIT));
 980 }
 981
 982 /*********************************************************************
 983  *              _ismbcspace (MSVCRT.@)
 984  */
 985 int CDECL _ismbcspace(unsigned int ch)
 986 {
 987     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 988     return (get_char_typeW( wch ) & C1_SPACE);
 989 }
 990
 991 /*********************************************************************
 992  *              _ismbcprint (MSVCRT.@)
 993  */
 994 int CDECL _ismbcprint(unsigned int ch)
 995 {
 996     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
 997     return (get_char_typeW( wch ) & (C1_UPPER | C1_LOWER | C1_DIGIT | C1_PUNCT | C1_ALPHA | C1_SPACE));
 998 }
 999
1000 /*********************************************************************
1001  *              _ismbcpunct(MSVCRT.@)
1002  */
1003 int CDECL _ismbcpunct(unsigned int ch)
1004 {
1005     MSVCRT_wchar_t wch = msvcrt_mbc_to_wc( ch );
1006     return (get_char_typeW( wch ) & C1_PUNCT);
1007 }
1008
1009 /*********************************************************************
1010  *              _ismbchira(MSVCRT.@)
1011  */
1012 int CDECL _ismbchira(unsigned int c)
1013 {
1014   /* FIXME: use lc_ctype when supported, not lc_all */
1015   if(MSVCRT___lc_codepage == 932)
1016   {
1017     /* Japanese/Hiragana, CP 932 */
1018     return (c >= 0x829f && c <= 0x82f1);
1019   }
1020   return 0;
1021 }
1022
1023 /*********************************************************************
1024  *              _ismbckata(MSVCRT.@)
1025  */
1026 int CDECL _ismbckata(unsigned int c)
1027 {
1028   /* FIXME: use lc_ctype when supported, not lc_all */
1029   if(MSVCRT___lc_codepage == 932)
1030   {
1031     if(c < 256)
1032       return _ismbbkana(c);
1033     /* Japanese/Katakana, CP 932 */
1034     return (c >= 0x8340 && c <= 0x8396 && c != 0x837f);
1035   }
1036   return 0;
1037 }
1038
1039 /*********************************************************************
1040  *              _ismbblead(MSVCRT.@)
1041  */
1042 int CDECL _ismbblead(unsigned int c)
1043 {
1044   return (MSVCRT_mbctype[(c&0xff) + 1] & _M1) != 0;
1045 }
1046
1047
1048 /*********************************************************************
1049  *              _ismbbtrail(MSVCRT.@)
1050  */
1051 int CDECL _ismbbtrail(unsigned int c)
1052 {
1053   return (MSVCRT_mbctype[(c&0xff) + 1] & _M2) != 0;
1054 }
1055
1056 /*********************************************************************
1057  *              _ismbslead(MSVCRT.@)
1058  */
1059 int CDECL _ismbslead(const unsigned char* start, const unsigned char* str)
1060 {
1061   /* Lead bytes can also be trail bytes if caller messed up
1062    * iterating through the string...
1063    */
1064   if(MSVCRT___mb_cur_max > 1)
1065   {
1066     while(start < str)
1067       start += MSVCRT_isleadbyte(*str) ? 2 : 1;
1068
1069     if(start == str)
1070       return MSVCRT_isleadbyte(*str);
1071   }
1072   return 0; /* Must have been a trail, we skipped it */
1073 }
1074
1075 /*********************************************************************
1076  *              _ismbstrail(MSVCRT.@)
1077  */
1078 int CDECL _ismbstrail(const unsigned char* start, const unsigned char* str)
1079 {
1080   /* Must not be a lead, and must be preceded by one */
1081   return !_ismbslead(start, str) && MSVCRT_isleadbyte(str[-1]);
1082 }
1083
1084 /*********************************************************************
1085  *              _mbsset(MSVCRT.@)
1086  */
1087 unsigned char* CDECL _mbsset(unsigned char* str, unsigned int c)
1088 {
1089   unsigned char* ret = str;
1090
1091   if(MSVCRT___mb_cur_max == 1 || c < 256)
1092     return u__strset(str, c); /* ASCII CP or SB char */
1093
1094   c &= 0xffff; /* Strip high bits */
1095
1096   while(str[0] && str[1])
1097   {
1098     *str++ = c >> 8;
1099     *str++ = c & 0xff;
1100   }
1101   if(str[0])
1102     str[0] = '\0'; /* FIXME: OK to shorten? */
1103
1104   return ret;
1105 }
1106
1107 /*********************************************************************
1108  *              _mbsnbset(MSVCRT.@)
1109  */
1110 unsigned char* CDECL _mbsnbset(unsigned char *str, unsigned int c, MSVCRT_size_t len)
1111 {
1112     unsigned char *ret = str;
1113
1114     if(!len)
1115         return ret;
1116
1117     if(MSVCRT___mb_cur_max == 1 || c < 256)
1118         return u__strnset(str, c, len); /* ASCII CP or SB char */
1119
1120     c &= 0xffff; /* Strip high bits */
1121
1122     while(str[0] && str[1] && (len > 1))
1123     {
1124         *str++ = c >> 8;
1125         len--;
1126         *str++ = c & 0xff;
1127         len--;
1128     }
1129     if(len && str[0]) {
1130         /* as per msdn pad with a blank character */
1131         str[0] = ' ';
1132     }
1133
1134     return ret;
1135 }
1136
1137 /*********************************************************************
1138  *              _mbsnset(MSVCRT.@)
1139  */
1140 unsigned char* CDECL _mbsnset(unsigned char* str, unsigned int c, MSVCRT_size_t len)
1141 {
1142   unsigned char *ret = str;
1143
1144   if(!len)
1145     return ret;
1146
1147   if(MSVCRT___mb_cur_max == 1 || c < 256)
1148     return u__strnset(str, c, len); /* ASCII CP or SB char */
1149
1150   c &= 0xffff; /* Strip high bits */
1151
1152   while(str[0] && str[1] && len--)
1153   {
1154     *str++ = c >> 8;
1155     *str++ = c & 0xff;
1156   }
1157   if(len && str[0])
1158     str[0] = '\0'; /* FIXME: OK to shorten? */
1159
1160   return ret;
1161 }
1162
1163 /*********************************************************************
1164  *              _mbsnccnt(MSVCRT.@)
1165  * 'c' is for 'character'.
1166  */
1167 MSVCRT_size_t CDECL _mbsnccnt(const unsigned char* str, MSVCRT_size_t len)
1168 {
1169   MSVCRT_size_t ret;
1170   if(MSVCRT___mb_cur_max > 1)
1171   {
1172     ret=0;
1173     while(*str && len-- > 0)
1174     {
1175       if(MSVCRT_isleadbyte(*str))
1176       {
1177         if (!len)
1178           break;
1179         len--;
1180         str++;
1181       }
1182       str++;
1183       ret++;
1184     }
1185     return ret;
1186   }
1187   ret=u_strlen(str);
1188   return min(ret, len); /* ASCII CP */
1189 }
1190
1191 /*********************************************************************
1192  *              _mbsnbcnt(MSVCRT.@)
1193  * 'b' is for byte count.
1194  */
1195 MSVCRT_size_t CDECL _mbsnbcnt(const unsigned char* str, MSVCRT_size_t len)
1196 {
1197   MSVCRT_size_t ret;
1198   if(MSVCRT___mb_cur_max > 1)
1199   {
1200     const unsigned char* xstr = str;
1201     while(*xstr && len-- > 0)
1202     {
1203       if (MSVCRT_isleadbyte(*xstr++))
1204         xstr++;
1205     }
1206     return xstr-str;
1207   }
1208   ret=u_strlen(str);
1209   return min(ret, len); /* ASCII CP */
1210 }
1211
1212 /*********************************************************************
1213  *              _mbsnbcat(MSVCRT.@)
1214  */
1215 unsigned char* CDECL _mbsnbcat(unsigned char* dst, const unsigned char* src, MSVCRT_size_t len)
1216 {
1217     if(MSVCRT___mb_cur_max > 1)
1218     {
1219         unsigned char *res = dst;
1220         while (*dst) {
1221             if (MSVCRT_isleadbyte(*dst++)) {
1222                 if (*dst) {
1223                     dst++;
1224                 } else {
1225                     /* as per msdn overwrite the lead byte in front of '\0' */
1226                     dst--;
1227                     break;
1228                 }
1229             }
1230         }
1231         while (*src && len--) *dst++ = *src++;
1232         *dst = '\0';
1233         return res;
1234     }
1235     return u_strncat(dst, src, len); /* ASCII CP */
1236 }
1237
1238
1239 /*********************************************************************
1240  *              _mbsncat(MSVCRT.@)
1241  */
1242 unsigned char* CDECL _mbsncat(unsigned char* dst, const unsigned char* src, MSVCRT_size_t len)
1243 {
1244   if(MSVCRT___mb_cur_max > 1)
1245   {
1246     unsigned char *res = dst;
1247     while (*dst)
1248     {
1249       if (MSVCRT_isleadbyte(*dst++))
1250         dst++;
1251     }
1252     while (*src && len--)
1253     {
1254       *dst++ = *src;
1255       if(MSVCRT_isleadbyte(*src++))
1256         *dst++ = *src++;
1257     }
1258     *dst = '\0';
1259     return res;
1260   }
1261   return u_strncat(dst, src, len); /* ASCII CP */
1262 }
1263
1264
1265 /*********************************************************************
1266  *              _mbslwr(MSVCRT.@)
1267  */
1268 unsigned char* CDECL _mbslwr(unsigned char* s)
1269 {
1270   unsigned char *ret = s;
1271   if (!s)
1272     return NULL;
1273   if (MSVCRT___mb_cur_max > 1)
1274   {
1275     unsigned int c;
1276     while (*s)
1277     {
1278       c = _mbctolower(_mbsnextc(s));
1279       /* Note that I assume that the size of the character is unchanged */
1280       if (c > 255)
1281       {
1282           *s++=(c>>8);
1283           c=c & 0xff;
1284       }
1285       *s++=c;
1286     }
1287   }
1288   else for ( ; *s; s++) *s = tolower(*s);
1289   return ret;
1290 }
1291
1292
1293 /*********************************************************************
1294  *              _mbsupr(MSVCRT.@)
1295  */
1296 unsigned char* CDECL _mbsupr(unsigned char* s)
1297 {
1298   unsigned char *ret = s;
1299   if (!s)
1300     return NULL;
1301   if (MSVCRT___mb_cur_max > 1)
1302   {
1303     unsigned int c;
1304     while (*s)
1305     {
1306       c = _mbctoupper(_mbsnextc(s));
1307       /* Note that I assume that the size of the character is unchanged */
1308       if (c > 255)
1309       {
1310           *s++=(c>>8);
1311           c=c & 0xff;
1312       }
1313       *s++=c;
1314     }
1315   }
1316   else for ( ; *s; s++) *s = toupper(*s);
1317   return ret;
1318 }
1319
1320
1321 /*********************************************************************
1322  *              _mbsspn (MSVCRT.@)
1323  */
1324 MSVCRT_size_t CDECL _mbsspn(const unsigned char* string, const unsigned char* set)
1325 {
1326     const unsigned char *p, *q;
1327
1328     for (p = string; *p; p++)
1329     {
1330         if (MSVCRT_isleadbyte(*p))
1331         {
1332             for (q = set; *q; q++)
1333             {
1334                 if (!q[1])
1335                     break;
1336                 if ((*p == *q) &&  (p[1] == q[1]))
1337                     break;
1338                 q++;
1339             }
1340             if (!q[0] || !q[1]) break;
1341         }
1342         else
1343         {
1344             for (q = set; *q; q++)
1345                 if (*p == *q)
1346                     break;
1347             if (!*q) break;
1348         }
1349     }
1350     return p - string;
1351 }
1352
1353 /*********************************************************************
1354  *              _mbsspnp (MSVCRT.@)
1355  */
1356 unsigned char* CDECL _mbsspnp(const unsigned char* string, const unsigned char* set)
1357 {
1358     const unsigned char *p, *q;
1359
1360     for (p = string; *p; p++)
1361     {
1362         if (MSVCRT_isleadbyte(*p))
1363         {
1364             for (q = set; *q; q++)
1365             {
1366                 if (!q[1])
1367                     break;
1368                 if ((*p == *q) &&  (p[1] == q[1]))
1369                     break;
1370                 q++;
1371             }
1372             if (!q[0] || !q[1]) break;
1373         }
1374         else
1375         {
1376             for (q = set; *q; q++)
1377                 if (*p == *q)
1378                     break;
1379             if (!*q) break;
1380         }
1381     }
1382     if (*p == '\0')
1383         return NULL;
1384     return (unsigned char *)p;
1385 }
1386
1387 /*********************************************************************
1388  *              _mbscspn(MSVCRT.@)
1389  */
1390 MSVCRT_size_t CDECL _mbscspn(const unsigned char* str, const unsigned char* cmp)
1391 {
1392   if (MSVCRT___mb_cur_max > 1)
1393     FIXME("don't handle double character case\n");
1394   return u_strcspn(str, cmp);
1395 }
1396
1397 /*********************************************************************
1398  *              _mbsrev (MSVCRT.@)
1399  */
1400 unsigned char* CDECL _mbsrev(unsigned char* str)
1401 {
1402     int i, len = _mbslen(str);
1403     unsigned char *p, *temp=MSVCRT_malloc(len*2);
1404
1405     if(!temp)
1406         return str;
1407
1408     /* unpack multibyte string to temp buffer */
1409     p=str;
1410     for(i=0; i<len; i++)
1411     {
1412         if (MSVCRT_isleadbyte(*p))
1413         {
1414             temp[i*2]=*p++;
1415             temp[i*2+1]=*p++;
1416         }
1417         else
1418         {
1419             temp[i*2]=*p++;
1420             temp[i*2+1]=0;
1421         }
1422     }
1423
1424     /* repack it in the reverse order */
1425     p=str;
1426     for(i=len-1; i>=0; i--)
1427     {
1428         if(MSVCRT_isleadbyte(temp[i*2]))
1429         {
1430             *p++=temp[i*2];
1431             *p++=temp[i*2+1];
1432         }
1433         else
1434         {
1435             *p++=temp[i*2];
1436         }
1437     }
1438
1439     MSVCRT_free(temp);
1440
1441     return str;
1442 }
1443
1444 /*********************************************************************
1445  *              _mbspbrk (MSVCRT.@)
1446  */
1447 unsigned char* CDECL _mbspbrk(const unsigned char* str, const unsigned char* accept)
1448 {
1449     const unsigned char* p;
1450
1451     while(*str)
1452     {
1453         for(p = accept; *p; p += (MSVCRT_isleadbyte(*p)?2:1) )
1454         {
1455             if (*p == *str)
1456                 if( !MSVCRT_isleadbyte(*p) || ( *(p+1) == *(str+1) ) )
1457                      return (unsigned char*)str;
1458         }
1459         str += (MSVCRT_isleadbyte(*str)?2:1);
1460     }
1461     return NULL;
1462 }
1463
1464
1465 /*
1466  * Functions depending on locale codepage
1467  */
1468
1469 /*********************************************************************
1470  *              mblen(MSVCRT.@)
1471  * REMARKS
1472  *  Unlike most of the multibyte string functions this function uses
1473  *  the locale codepage, not the codepage set by _setmbcp
1474  */
1475 int CDECL MSVCRT_mblen(const char* str, MSVCRT_size_t size)
1476 {
1477   if (str && *str && size)
1478   {
1479     if(MSVCRT___mb_cur_max == 1)
1480       return 1; /* ASCII CP */
1481
1482     return !MSVCRT_isleadbyte(*str) ? 1 : (size>1 ? 2 : -1);
1483   }
1484   return 0;
1485 }
1486
1487 /*********************************************************************
1488  *              _mbstrlen(MSVCRT.@)
1489  * REMARKS
1490  *  Unlike most of the multibyte string functions this function uses
1491  *  the locale codepage, not the codepage set by _setmbcp
1492  */
1493 MSVCRT_size_t CDECL _mbstrlen(const char* str)
1494 {
1495   if(MSVCRT___mb_cur_max > 1)
1496   {
1497     MSVCRT_size_t len = 0;
1498     while(*str)
1499     {
1500       /* FIXME: According to the documentation we are supposed to test for
1501        * multi-byte character validity. Whatever that means
1502        */
1503       str += MSVCRT_isleadbyte(*str) ? 2 : 1;
1504       len++;
1505     }
1506     return len;
1507   }
1508   return strlen(str); /* ASCII CP */
1509 }