dlls/ntdll/wcstring.c - wine - Git at Google

 /*
  * NTDLL wide-char functions
  *
  * Copyright 2000 Alexandre Julliard
  * Copyright 2000 Jon Griffiths
  * Copyright 2003 Thomas Mertes
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */

 #include "config.h"

 #include <ctype.h>
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stdio.h>

 #include "windef.h"
 #include "winternl.h"
 #include "wine/unicode.h"
 #include "wine/debug.h"

 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);


 /*********************************************************************
  *           _wcsicmp    (NTDLL.@)
  */
 INT __cdecl NTDLL__wcsicmp( LPCWSTR str1, LPCWSTR str2 )
 {
     return strcmpiW( str1, str2 );
 }


 /*********************************************************************
  *           _wcslwr    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL__wcslwr( LPWSTR str )
 {
     return strlwrW( str );
 }


 /*********************************************************************
  *           _wcsnicmp    (NTDLL.@)
  */
 INT __cdecl NTDLL__wcsnicmp( LPCWSTR str1, LPCWSTR str2, INT n )
 {
     return strncmpiW( str1, str2, n );
 }


 /*********************************************************************
  *           _wcsupr    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL__wcsupr( LPWSTR str )
 {
     return struprW( str );
 }


 /*********************************************************************
  *           towlower    (NTDLL.@)
  */
 WCHAR __cdecl NTDLL_towlower( WCHAR ch )
 {
     return tolowerW(ch);
 }


 /*********************************************************************
  *           towupper    (NTDLL.@)
  */
 WCHAR __cdecl NTDLL_towupper( WCHAR ch )
 {
     return toupperW(ch);
 }


 /***********************************************************************
  *           wcscat    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcscat( LPWSTR dst, LPCWSTR src )
 {
     return strcatW( dst, src );
 }


 /*********************************************************************
  *           wcschr    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcschr( LPCWSTR str, WCHAR ch )
 {
     return strchrW( str, ch );
 }


 /*********************************************************************
  *           wcscmp    (NTDLL.@)
  */
 INT __cdecl NTDLL_wcscmp( LPCWSTR str1, LPCWSTR str2 )
 {
     return strcmpW( str1, str2 );
 }


 /***********************************************************************
  *           wcscpy    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcscpy( LPWSTR dst, LPCWSTR src )
 {
     return strcpyW( dst, src );
 }


 /*********************************************************************
  *           wcscspn    (NTDLL.@)
  */
 INT __cdecl NTDLL_wcscspn( LPCWSTR str, LPCWSTR reject )
 {
     return strcspnW( str, reject );
 }


 /***********************************************************************
  *           wcslen    (NTDLL.@)
  */
 INT __cdecl NTDLL_wcslen( LPCWSTR str )
 {
     return strlenW( str );
 }


 /*********************************************************************
  *           wcsncat    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcsncat( LPWSTR s1, LPCWSTR s2, INT n )
 {
     LPWSTR ret = s1;
     while (*s1) s1++;
     while (n-- > 0) if (!(*s1++ = *s2++)) return ret;
     *s1 = 0;
     return ret;
 }


 /*********************************************************************
  *           wcsncmp    (NTDLL.@)
  */
 INT __cdecl NTDLL_wcsncmp( LPCWSTR str1, LPCWSTR str2, INT n )
 {
     return strncmpW( str1, str2, n );
 }


 /*********************************************************************
  *           wcsncpy    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcsncpy( LPWSTR s1, LPCWSTR s2, INT n )
 {
     WCHAR *ret = s1;
     while (n-- > 0) if (!(*s1++ = *s2++)) break;
     while (n-- > 0) *s1++ = 0;
     return ret;
 }


 /*********************************************************************
  *           wcspbrk    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcspbrk( LPCWSTR str, LPCWSTR accept )
 {
     return strpbrkW( str, accept );
 }


 /*********************************************************************
  *           wcsrchr    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcsrchr( LPWSTR str, WCHAR ch )
 {
     return strrchrW( str, ch );
 }


 /*********************************************************************
  *           wcsspn    (NTDLL.@)
  */
 INT __cdecl NTDLL_wcsspn( LPCWSTR str, LPCWSTR accept )
 {
     return strspnW( str, accept );
 }


 /*********************************************************************
  *           wcsstr    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcsstr( LPCWSTR str, LPCWSTR sub )
 {
     return strstrW( str, sub );
 }


 /*********************************************************************
  *           wcstok    (NTDLL.@)
  */
 LPWSTR __cdecl NTDLL_wcstok( LPWSTR str, LPCWSTR delim )
 {
     static LPWSTR next = NULL;
     LPWSTR ret;

     if (!str)
         if (!(str = next)) return NULL;

     while (*str && NTDLL_wcschr( delim, *str )) str++;
     if (!*str) return NULL;
     ret = str++;
     while (*str && !NTDLL_wcschr( delim, *str )) str++;
     if (*str) *str++ = 0;
     next = str;
     return ret;
 }


 /*********************************************************************
  *           wcstombs    (NTDLL.@)
  */
 INT __cdecl NTDLL_wcstombs( LPSTR dst, LPCWSTR src, INT n )
 {
     DWORD len;

     if (!dst)
     {
         RtlUnicodeToMultiByteSize( &len, src, strlenW(src)*sizeof(WCHAR) );
         return len;
     }
     else
     {
         if (n <= 0) return 0;
         RtlUnicodeToMultiByteN( dst, n, &len, src, strlenW(src)*sizeof(WCHAR) );
         if (len < n) dst[len] = 0;
     }
     return len;
 }


 /*********************************************************************
  *           mbstowcs    (NTDLL.@)
  */
 INT __cdecl NTDLL_mbstowcs( LPWSTR dst, LPCSTR src, INT n )
 {
     DWORD len;

     if (!dst)
     {
         RtlMultiByteToUnicodeSize( &len, src, strlen(src) );
     }
     else
     {
         if (n <= 0) return 0;
         RtlMultiByteToUnicodeN( dst, n*sizeof(WCHAR), &len, src, strlen(src) );
         if (len / sizeof(WCHAR) < n) dst[len / sizeof(WCHAR)] = 0;
     }
     return len / sizeof(WCHAR);
 }


 /*********************************************************************
  *                  wcstol  (NTDLL.@)
  */
 long __cdecl NTDLL_wcstol(LPCWSTR s,LPWSTR *end,INT base)
 {
     return strtolW( s, end, base );
 }


 /*********************************************************************
  *                  wcstoul  (NTDLL.@)
  */
 unsigned long __cdecl NTDLL_wcstoul(LPCWSTR s,LPWSTR *end,INT base)
 {
     return strtoulW( s, end, base );
 }


 /*********************************************************************
  *           iswctype    (NTDLL.@)
  */
 INT __cdecl NTDLL_iswctype( WCHAR wc, WCHAR wct )
 {
     return (get_char_typeW(wc) & 0xfff) & wct;
 }


 /*********************************************************************
  *           iswalpha    (NTDLL.@)
  *
  * Checks if an unicode char wc is a letter
  *
  * RETURNS
  *  TRUE: The unicode char wc is a letter.
  *  FALSE: Otherwise
  */
 INT __cdecl NTDLL_iswalpha( WCHAR wc )
 {
     return isalphaW(wc);
 }


 /*********************************************************************
  *		iswdigit (NTDLL.@)
  *
  * Checks if an unicode char wc is a digit
  *
  * RETURNS
  *  TRUE: The unicode char wc is a digit.
  *  FALSE: Otherwise
  */
 INT __cdecl NTDLL_iswdigit( WCHAR wc )
 {
     return isdigitW(wc);
 }


 /*********************************************************************
  *		iswlower (NTDLL.@)
  *
  * Checks if an unicode char wc is a lower case letter
  *
  * RETURNS
  *  TRUE: The unicode char wc is a lower case letter.
  *  FALSE: Otherwise
  */
 INT __cdecl NTDLL_iswlower( WCHAR wc )
 {
     return islowerW(wc);
 }


 /*********************************************************************
  *		iswspace (NTDLL.@)
  *
  * Checks if an unicode char wc is a white space character
  *
  * RETURNS
  *  TRUE: The unicode char wc is a white space character.
  *  FALSE: Otherwise
  */
 INT __cdecl NTDLL_iswspace( WCHAR wc )
 {
     return isspaceW(wc);
 }


 /*********************************************************************
  *		iswxdigit (NTDLL.@)
  *
  * Checks if an unicode char wc is an extended digit
  *
  * RETURNS
  *  TRUE: The unicode char wc is an extended digit.
  *  FALSE: Otherwise
  */
 INT __cdecl NTDLL_iswxdigit( WCHAR wc )
 {
     return isxdigitW(wc);
 }


 /*********************************************************************
  *      _ultow   (NTDLL.@)
  *
  * Converts an unsigned long integer to an unicode string.
  *
  * RETURNS
  *  Always returns str.
  *
  * NOTES
  *  Converts value to a '\0' terminated wstring which is copied to str.
  *  The maximum length of the copied str is 33 bytes.
  *  Does not check if radix is in the range of 2 to 36.
  *  If str is NULL it just returns NULL.
  */
 LPWSTR __cdecl _ultow(
     unsigned long value, /* [I] Value to be converted */
     LPWSTR str,          /* [O] Destination for the converted value */
     INT radix)           /* [I] Number base for conversion */
 {
     WCHAR buffer[33];
     PWCHAR pos;
     WCHAR digit;

     pos = &buffer[32];
     *pos = '\0';

     do {
 	digit = value % radix;
 	value = value / radix;
 	if (digit < 10) {
 	    *--pos = '0' + digit;
 	} else {
 	    *--pos = 'a' + digit - 10;
 	} /* if */
     } while (value != 0L);

     if (str != NULL) {
 	memcpy(str, pos, (&buffer[32] - pos + 1) * sizeof(WCHAR));
     } /* if */
     return str;
 }


 /*********************************************************************
  *      _ltow   (NTDLL.@)
  *
  * Converts a long integer to an unicode string.
  *
  * RETURNS
  *  Always returns str.
  *
  * NOTES
  *  Converts value to a '\0' terminated wstring which is copied to str.
  *  The maximum length of the copied str is 33 bytes. If radix
  *  is 10 and value is negative, the value is converted with sign.
  *  Does not check if radix is in the range of 2 to 36.
  *  If str is NULL it just returns NULL.
  */
 LPWSTR __cdecl _ltow(
     long value, /* [I] Value to be converted */
     LPWSTR str, /* [O] Destination for the converted value */
     INT radix)  /* [I] Number base for conversion */
 {
     unsigned long val;
     int negative;
     WCHAR buffer[33];
     PWCHAR pos;
     WCHAR digit;

     if (value < 0 && radix == 10) {
 	negative = 1;
         val = -value;
     } else {
 	negative = 0;
         val = value;
     } /* if */

     pos = &buffer[32];
     *pos = '\0';

     do {
 	digit = val % radix;
 	val = val / radix;
 	if (digit < 10) {
 	    *--pos = '0' + digit;
 	} else {
 	    *--pos = 'a' + digit - 10;
 	} /* if */
     } while (val != 0L);

     if (negative) {
 	*--pos = '-';
     } /* if */

     if (str != NULL) {
 	memcpy(str, pos, (&buffer[32] - pos + 1) * sizeof(WCHAR));
     } /* if */
     return str;
 }


 /*********************************************************************
  *      _itow    (NTDLL.@)
  *
  * Converts an integer to an unicode string.
  *
  * RETURNS
  *  Always returns str.
  *
  * NOTES
  *  Converts value to a '\0' terminated wstring which is copied to str.
  *  The maximum length of the copied str is 33 bytes. If radix
  *  is 10 and value is negative, the value is converted with sign.
  *  Does not check if radix is in the range of 2 to 36.
  *  If str is NULL it just returns NULL.
  *
  * DIFFERENCES
  * - The native function crashes when the string is longer than 19 chars.
  *   This function does not have this bug.
  */
 LPWSTR __cdecl _itow(
     int value,  /* [I] Value to be converted */
     LPWSTR str, /* [O] Destination for the converted value */
     INT radix)  /* [I] Number base for conversion */
 {
     return _ltow(value, str, radix);
 }


 /*********************************************************************
  *      _ui64tow   (NTDLL.@)
  *
  * Converts a large unsigned integer to an unicode string.
  *
  * RETURNS
  *  Always returns str.
  *
  * NOTES
  *  Converts value to a '\0' terminated wstring which is copied to str.
  *  The maximum length of the copied str is 33 bytes.
  *  Does not check if radix is in the range of 2 to 36.
  *  If str is NULL it just returns NULL.
  *
  * DIFFERENCES
  * - This function does not exist in the native DLL (but in msvcrt).
  *   But since the maintenance of all these functions is better done
  *   in one place we implement it here.
  */
 LPWSTR __cdecl _ui64tow(
     ULONGLONG value, /* [I] Value to be converted */
     LPWSTR str,      /* [O] Destination for the converted value */
     INT radix)       /* [I] Number base for conversion */
 {
     WCHAR buffer[65];
     PWCHAR pos;
     WCHAR digit;

     pos = &buffer[64];
     *pos = '\0';

     do {
 	digit = value % radix;
 	value = value / radix;
 	if (digit < 10) {
 	    *--pos = '0' + digit;
 	} else {
 	    *--pos = 'a' + digit - 10;
 	} /* if */
     } while (value != 0L);

     if (str != NULL) {
 	memcpy(str, pos, (&buffer[64] - pos + 1) * sizeof(WCHAR));
     } /* if */
     return str;
 }


 /*********************************************************************
  *      _i64tow   (NTDLL.@)
  *
  * Converts a large integer to an unicode string.
  *
  * RETURNS
  *  Always returns str.
  *
  * NOTES
  *  Converts value to a '\0' terminated wstring which is copied to str.
  *  The maximum length of the copied str is 33 bytes. If radix
  *  is 10 and value is negative, the value is converted with sign.
  *  Does not check if radix is in the range of 2 to 36.
  *  If str is NULL it just returns NULL.
  *
  * DIFFERENCES
  * - The native DLL converts negative values (for base 10) wrong:
  *                     -1 is converted to -18446744073709551615
  *                     -2 is converted to -18446744073709551614
  *   -9223372036854775807 is converted to  -9223372036854775809
  *   -9223372036854775808 is converted to  -9223372036854775808
  *   The native msvcrt _i64tow function and our ntdll function do
  *   not have this bug.
  */
 LPWSTR __cdecl _i64tow(
     LONGLONG value, /* [I] Value to be converted */
     LPWSTR str,     /* [O] Destination for the converted value */
     INT radix)      /* [I] Number base for conversion */
 {
     ULONGLONG val;
     int negative;
     WCHAR buffer[65];
     PWCHAR pos;
     WCHAR digit;

     if (value < 0 && radix == 10) {
 	negative = 1;
         val = -value;
     } else {
 	negative = 0;
         val = value;
     } /* if */

     pos = &buffer[64];
     *pos = '\0';

     do {
 	digit = val % radix;
 	val = val / radix;
 	if (digit < 10) {
 	    *--pos = '0' + digit;
 	} else {
 	    *--pos = 'a' + digit - 10;
 	} /* if */
     } while (val != 0L);

     if (negative) {
 	*--pos = '-';
     } /* if */

     if (str != NULL) {
 	memcpy(str, pos, (&buffer[64] - pos + 1) * sizeof(WCHAR));
     } /* if */
     return str;
 }


 /*********************************************************************
  *      _wtol    (NTDLL.@)
  *
  * Converts an unicode string to a long integer.
  *
  * PARAMS
  *  str [I] Wstring to be converted
  *
  * RETURNS
  *  On success it returns the integer value otherwise it returns 0.
  *
  * NOTES
  *  Accepts: {whitespace} [+|-] {digits}
  *  No check is made for value overflow, only the lower 32 bits are assigned.
  *  If str is NULL it crashes, as the native function does.
  */
 LONG __cdecl _wtol( LPCWSTR str )
 {
     ULONG RunningTotal = 0;
     char bMinus = 0;

     while (isspaceW(*str)) {
 	str++;
     } /* while */

     if (*str == '+') {
 	str++;
     } else if (*str == '-') {
 	bMinus = 1;
 	str++;
     } /* if */

     while (*str >= '0' && *str <= '9') {
 	RunningTotal = RunningTotal * 10 + *str - '0';
 	str++;
     } /* while */

     return bMinus ? -RunningTotal : RunningTotal;
 }


 /*********************************************************************
  *      _wtoi    (NTDLL.@)
  *
  * Converts an unicode string to an integer.
  *
  * PARAMS
  *  str [I] Wstring to be converted
  *
  * RETURNS
  *  On success it returns the integer value otherwise it returns 0.
  *
  * NOTES
  *  Accepts: {whitespace} [+|-] {digits}
  *  No check is made for value overflow, only the lower 32 bits are assigned.
  *  If str is NULL it crashes, as the native function does.
  */
 int __cdecl _wtoi( LPCWSTR str )
 {
     return _wtol(str);
 }


 /*********************************************************************
  *      _wtoi64   (NTDLL.@)
  *
  * Converts an unicode string to a large integer.
  *
  * PARAMS
  *  str [I] Wstring to be converted
  *
  * RETURNS
  *  On success it returns the integer value otherwise it returns 0.
  *
  * NOTES
  *  Accepts: {whitespace} [+|-] {digits}
  *  No check is made for value overflow, only the lower 64 bits are assigned.
  *  If str is NULL it crashes, as the native function does.
  */
 LONGLONG  __cdecl _wtoi64( LPCWSTR str )
 {
     ULONGLONG RunningTotal = 0;
     char bMinus = 0;

     while (isspaceW(*str)) {
 	str++;
     } /* while */

     if (*str == '+') {
 	str++;
     } else if (*str == '-') {
 	bMinus = 1;
 	str++;
     } /* if */

     while (*str >= '0' && *str <= '9') {
 	RunningTotal = RunningTotal * 10 + *str - '0';
 	str++;
     } /* while */

     return bMinus ? -RunningTotal : RunningTotal;
 }


 /***********************************************************************
  *        _snwprintf (NTDLL.@)
  */
 int __cdecl _snwprintf(WCHAR *str, unsigned int len, const WCHAR *format, ...)
 {
   int retval;
   va_list valist;
   va_start(valist, format);
   retval = vsnprintfW(str, len, format, valist);
   va_end(valist);
   return retval;
 }


 /***********************************************************************
  *        swprintf (NTDLL.@)
  */
 int __cdecl NTDLL_swprintf(WCHAR *str, const WCHAR *format, ...)
 {
   int retval;
   va_list valist;
   va_start(valist, format);
   retval = vsnprintfW(str, INT_MAX, format, valist);
   va_end(valist);
   return retval;
 }
	/*
	* NTDLL wide-char functions
	*
	* Copyright 2000 Alexandre Julliard
	* Copyright 2000 Jon Griffiths
	* Copyright 2003 Thomas Mertes
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#include "config.h"

	#include <ctype.h>
	#include <limits.h>
	#include <stdlib.h>
	#include <string.h>
	#include <stdarg.h>
	#include <stdio.h>

	#include "windef.h"
	#include "winternl.h"
	#include "wine/unicode.h"
	#include "wine/debug.h"

	WINE_DEFAULT_DEBUG_CHANNEL(ntdll);


	/*********************************************************************
	* _wcsicmp (NTDLL.@)
	*/
	INT __cdecl NTDLL__wcsicmp( LPCWSTR str1, LPCWSTR str2 )
	{
	return strcmpiW( str1, str2 );
	}


	/*********************************************************************
	* _wcslwr (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL__wcslwr( LPWSTR str )
	{
	return strlwrW( str );
	}


	/*********************************************************************
	* _wcsnicmp (NTDLL.@)
	*/
	INT __cdecl NTDLL__wcsnicmp( LPCWSTR str1, LPCWSTR str2, INT n )
	{
	return strncmpiW( str1, str2, n );
	}


	/*********************************************************************
	* _wcsupr (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL__wcsupr( LPWSTR str )
	{
	return struprW( str );
	}


	/*********************************************************************
	* towlower (NTDLL.@)
	*/
	WCHAR __cdecl NTDLL_towlower( WCHAR ch )
	{
	return tolowerW(ch);
	}


	/*********************************************************************
	* towupper (NTDLL.@)
	*/
	WCHAR __cdecl NTDLL_towupper( WCHAR ch )
	{
	return toupperW(ch);
	}


	/***********************************************************************
	* wcscat (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcscat( LPWSTR dst, LPCWSTR src )
	{
	return strcatW( dst, src );
	}


	/*********************************************************************
	* wcschr (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcschr( LPCWSTR str, WCHAR ch )
	{
	return strchrW( str, ch );
	}


	/*********************************************************************
	* wcscmp (NTDLL.@)
	*/
	INT __cdecl NTDLL_wcscmp( LPCWSTR str1, LPCWSTR str2 )
	{
	return strcmpW( str1, str2 );
	}


	/***********************************************************************
	* wcscpy (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcscpy( LPWSTR dst, LPCWSTR src )
	{
	return strcpyW( dst, src );
	}


	/*********************************************************************
	* wcscspn (NTDLL.@)
	*/
	INT __cdecl NTDLL_wcscspn( LPCWSTR str, LPCWSTR reject )
	{
	return strcspnW( str, reject );
	}


	/***********************************************************************
	* wcslen (NTDLL.@)
	*/
	INT __cdecl NTDLL_wcslen( LPCWSTR str )
	{
	return strlenW( str );
	}


	/*********************************************************************
	* wcsncat (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcsncat( LPWSTR s1, LPCWSTR s2, INT n )
	{
	LPWSTR ret = s1;
	while (*s1) s1++;
	while (n-- > 0) if (!(s1++ = s2++)) return ret;
	*s1 = 0;
	return ret;
	}


	/*********************************************************************
	* wcsncmp (NTDLL.@)
	*/
	INT __cdecl NTDLL_wcsncmp( LPCWSTR str1, LPCWSTR str2, INT n )
	{
	return strncmpW( str1, str2, n );
	}


	/*********************************************************************
	* wcsncpy (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcsncpy( LPWSTR s1, LPCWSTR s2, INT n )
	{
	WCHAR *ret = s1;
	while (n-- > 0) if (!(s1++ = s2++)) break;
	while (n-- > 0) *s1++ = 0;
	return ret;
	}


	/*********************************************************************
	* wcspbrk (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcspbrk( LPCWSTR str, LPCWSTR accept )
	{
	return strpbrkW( str, accept );
	}


	/*********************************************************************
	* wcsrchr (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcsrchr( LPWSTR str, WCHAR ch )
	{
	return strrchrW( str, ch );
	}


	/*********************************************************************
	* wcsspn (NTDLL.@)
	*/
	INT __cdecl NTDLL_wcsspn( LPCWSTR str, LPCWSTR accept )
	{
	return strspnW( str, accept );
	}


	/*********************************************************************
	* wcsstr (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcsstr( LPCWSTR str, LPCWSTR sub )
	{
	return strstrW( str, sub );
	}


	/*********************************************************************
	* wcstok (NTDLL.@)
	*/
	LPWSTR __cdecl NTDLL_wcstok( LPWSTR str, LPCWSTR delim )
	{
	static LPWSTR next = NULL;
	LPWSTR ret;

	if (!str)
	if (!(str = next)) return NULL;

	while (str && NTDLL_wcschr( delim, str )) str++;
	if (!*str) return NULL;
	ret = str++;
	while (str && !NTDLL_wcschr( delim, str )) str++;
	if (str) str++ = 0;
	next = str;
	return ret;
	}


	/*********************************************************************
	* wcstombs (NTDLL.@)
	*/
	INT __cdecl NTDLL_wcstombs( LPSTR dst, LPCWSTR src, INT n )
	{
	DWORD len;

	if (!dst)
	{
	RtlUnicodeToMultiByteSize( &len, src, strlenW(src)*sizeof(WCHAR) );
	return len;
	}
	else
	{
	if (n <= 0) return 0;
	RtlUnicodeToMultiByteN( dst, n, &len, src, strlenW(src)*sizeof(WCHAR) );
	if (len < n) dst[len] = 0;
	}
	return len;
	}


	/*********************************************************************
	* mbstowcs (NTDLL.@)
	*/
	INT __cdecl NTDLL_mbstowcs( LPWSTR dst, LPCSTR src, INT n )
	{
	DWORD len;

	if (!dst)
	{
	RtlMultiByteToUnicodeSize( &len, src, strlen(src) );
	}
	else
	{
	if (n <= 0) return 0;
	RtlMultiByteToUnicodeN( dst, n*sizeof(WCHAR), &len, src, strlen(src) );
	if (len / sizeof(WCHAR) < n) dst[len / sizeof(WCHAR)] = 0;
	}
	return len / sizeof(WCHAR);
	}


	/*********************************************************************
	* wcstol (NTDLL.@)
	*/
	long __cdecl NTDLL_wcstol(LPCWSTR s,LPWSTR *end,INT base)
	{
	return strtolW( s, end, base );
	}


	/*********************************************************************
	* wcstoul (NTDLL.@)
	*/
	unsigned long __cdecl NTDLL_wcstoul(LPCWSTR s,LPWSTR *end,INT base)
	{
	return strtoulW( s, end, base );
	}


	/*********************************************************************
	* iswctype (NTDLL.@)
	*/
	INT __cdecl NTDLL_iswctype( WCHAR wc, WCHAR wct )
	{
	return (get_char_typeW(wc) & 0xfff) & wct;
	}


	/*********************************************************************
	* iswalpha (NTDLL.@)
	*
	* Checks if an unicode char wc is a letter
	*
	* RETURNS
	* TRUE: The unicode char wc is a letter.
	* FALSE: Otherwise
	*/
	INT __cdecl NTDLL_iswalpha( WCHAR wc )
	{
	return isalphaW(wc);
	}


	/*********************************************************************
	* iswdigit (NTDLL.@)
	*
	* Checks if an unicode char wc is a digit
	*
	* RETURNS
	* TRUE: The unicode char wc is a digit.
	* FALSE: Otherwise
	*/
	INT __cdecl NTDLL_iswdigit( WCHAR wc )
	{
	return isdigitW(wc);
	}


	/*********************************************************************
	* iswlower (NTDLL.@)
	*
	* Checks if an unicode char wc is a lower case letter
	*
	* RETURNS
	* TRUE: The unicode char wc is a lower case letter.
	* FALSE: Otherwise
	*/
	INT __cdecl NTDLL_iswlower( WCHAR wc )
	{
	return islowerW(wc);
	}


	/*********************************************************************
	* iswspace (NTDLL.@)
	*
	* Checks if an unicode char wc is a white space character
	*
	* RETURNS
	* TRUE: The unicode char wc is a white space character.
	* FALSE: Otherwise
	*/
	INT __cdecl NTDLL_iswspace( WCHAR wc )
	{
	return isspaceW(wc);
	}


	/*********************************************************************
	* iswxdigit (NTDLL.@)
	*
	* Checks if an unicode char wc is an extended digit
	*
	* RETURNS
	* TRUE: The unicode char wc is an extended digit.
	* FALSE: Otherwise
	*/
	INT __cdecl NTDLL_iswxdigit( WCHAR wc )
	{
	return isxdigitW(wc);
	}


	/*********************************************************************
	* _ultow (NTDLL.@)
	*
	* Converts an unsigned long integer to an unicode string.
	*
	* RETURNS
	* Always returns str.
	*
	* NOTES
	* Converts value to a '\0' terminated wstring which is copied to str.
	* The maximum length of the copied str is 33 bytes.
	* Does not check if radix is in the range of 2 to 36.
	* If str is NULL it just returns NULL.
	*/
	LPWSTR __cdecl _ultow(
	unsigned long value, /* [I] Value to be converted */
	LPWSTR str, /* [O] Destination for the converted value */
	INT radix) /* [I] Number base for conversion */
	{
	WCHAR buffer[33];
	PWCHAR pos;
	WCHAR digit;

	pos = &buffer[32];
	*pos = '\0';

	do {
	digit = value % radix;
	value = value / radix;
	if (digit < 10) {
	*--pos = '0' + digit;
	} else {
	*--pos = 'a' + digit - 10;
	} /* if */
	} while (value != 0L);

	if (str != NULL) {
	memcpy(str, pos, (&buffer[32] - pos + 1) * sizeof(WCHAR));
	} /* if */
	return str;
	}


	/*********************************************************************
	* _ltow (NTDLL.@)
	*
	* Converts a long integer to an unicode string.
	*
	* RETURNS
	* Always returns str.
	*
	* NOTES
	* Converts value to a '\0' terminated wstring which is copied to str.
	* The maximum length of the copied str is 33 bytes. If radix
	* is 10 and value is negative, the value is converted with sign.
	* Does not check if radix is in the range of 2 to 36.
	* If str is NULL it just returns NULL.
	*/
	LPWSTR __cdecl _ltow(
	long value, /* [I] Value to be converted */
	LPWSTR str, /* [O] Destination for the converted value */
	INT radix) /* [I] Number base for conversion */
	{
	unsigned long val;
	int negative;
	WCHAR buffer[33];
	PWCHAR pos;
	WCHAR digit;

	if (value < 0 && radix == 10) {
	negative = 1;
	val = -value;
	} else {
	negative = 0;
	val = value;
	} /* if */

	pos = &buffer[32];
	*pos = '\0';

	do {
	digit = val % radix;
	val = val / radix;
	if (digit < 10) {
	*--pos = '0' + digit;
	} else {
	*--pos = 'a' + digit - 10;
	} /* if */
	} while (val != 0L);

	if (negative) {
	*--pos = '-';
	} /* if */

	if (str != NULL) {
	memcpy(str, pos, (&buffer[32] - pos + 1) * sizeof(WCHAR));
	} /* if */
	return str;
	}


	/*********************************************************************
	* _itow (NTDLL.@)
	*
	* Converts an integer to an unicode string.
	*
	* RETURNS
	* Always returns str.
	*
	* NOTES
	* Converts value to a '\0' terminated wstring which is copied to str.
	* The maximum length of the copied str is 33 bytes. If radix
	* is 10 and value is negative, the value is converted with sign.
	* Does not check if radix is in the range of 2 to 36.
	* If str is NULL it just returns NULL.
	*
	* DIFFERENCES
	* - The native function crashes when the string is longer than 19 chars.
	* This function does not have this bug.
	*/
	LPWSTR __cdecl _itow(
	int value, /* [I] Value to be converted */
	LPWSTR str, /* [O] Destination for the converted value */
	INT radix) /* [I] Number base for conversion */
	{
	return _ltow(value, str, radix);
	}


	/*********************************************************************
	* _ui64tow (NTDLL.@)
	*
	* Converts a large unsigned integer to an unicode string.
	*
	* RETURNS
	* Always returns str.
	*
	* NOTES
	* Converts value to a '\0' terminated wstring which is copied to str.
	* The maximum length of the copied str is 33 bytes.
	* Does not check if radix is in the range of 2 to 36.
	* If str is NULL it just returns NULL.
	*
	* DIFFERENCES
	* - This function does not exist in the native DLL (but in msvcrt).
	* But since the maintenance of all these functions is better done
	* in one place we implement it here.
	*/
	LPWSTR __cdecl _ui64tow(
	ULONGLONG value, /* [I] Value to be converted */
	LPWSTR str, /* [O] Destination for the converted value */
	INT radix) /* [I] Number base for conversion */
	{
	WCHAR buffer[65];
	PWCHAR pos;
	WCHAR digit;

	pos = &buffer[64];
	*pos = '\0';

	do {
	digit = value % radix;
	value = value / radix;
	if (digit < 10) {
	*--pos = '0' + digit;
	} else {
	*--pos = 'a' + digit - 10;
	} /* if */
	} while (value != 0L);

	if (str != NULL) {
	memcpy(str, pos, (&buffer[64] - pos + 1) * sizeof(WCHAR));
	} /* if */
	return str;
	}


	/*********************************************************************
	* _i64tow (NTDLL.@)
	*
	* Converts a large integer to an unicode string.
	*
	* RETURNS
	* Always returns str.
	*
	* NOTES
	* Converts value to a '\0' terminated wstring which is copied to str.
	* The maximum length of the copied str is 33 bytes. If radix
	* is 10 and value is negative, the value is converted with sign.
	* Does not check if radix is in the range of 2 to 36.
	* If str is NULL it just returns NULL.
	*
	* DIFFERENCES
	* - The native DLL converts negative values (for base 10) wrong:
	* -1 is converted to -18446744073709551615
	* -2 is converted to -18446744073709551614
	* -9223372036854775807 is converted to -9223372036854775809
	* -9223372036854775808 is converted to -9223372036854775808
	* The native msvcrt _i64tow function and our ntdll function do
	* not have this bug.
	*/
	LPWSTR __cdecl _i64tow(
	LONGLONG value, /* [I] Value to be converted */
	LPWSTR str, /* [O] Destination for the converted value */
	INT radix) /* [I] Number base for conversion */
	{
	ULONGLONG val;
	int negative;
	WCHAR buffer[65];
	PWCHAR pos;
	WCHAR digit;

	if (value < 0 && radix == 10) {
	negative = 1;
	val = -value;
	} else {
	negative = 0;
	val = value;
	} /* if */

	pos = &buffer[64];
	*pos = '\0';

	do {
	digit = val % radix;
	val = val / radix;
	if (digit < 10) {
	*--pos = '0' + digit;
	} else {
	*--pos = 'a' + digit - 10;
	} /* if */
	} while (val != 0L);

	if (negative) {
	*--pos = '-';
	} /* if */

	if (str != NULL) {
	memcpy(str, pos, (&buffer[64] - pos + 1) * sizeof(WCHAR));
	} /* if */
	return str;
	}


	/*********************************************************************
	* _wtol (NTDLL.@)
	*
	* Converts an unicode string to a long integer.
	*
	* PARAMS
	* str [I] Wstring to be converted
	*
	* RETURNS
	* On success it returns the integer value otherwise it returns 0.
	*
	* NOTES
	* Accepts: {whitespace} [+\|-] {digits}
	* No check is made for value overflow, only the lower 32 bits are assigned.
	* If str is NULL it crashes, as the native function does.
	*/
	LONG __cdecl _wtol( LPCWSTR str )
	{
	ULONG RunningTotal = 0;
	char bMinus = 0;

	while (isspaceW(*str)) {
	str++;
	} /* while */

	if (*str == '+') {
	str++;
	} else if (*str == '-') {
	bMinus = 1;
	str++;
	} /* if */

	while (str >= '0' && str <= '9') {
	RunningTotal = RunningTotal * 10 + *str - '0';
	str++;
	} /* while */

	return bMinus ? -RunningTotal : RunningTotal;
	}


	/*********************************************************************
	* _wtoi (NTDLL.@)
	*
	* Converts an unicode string to an integer.
	*
	* PARAMS
	* str [I] Wstring to be converted
	*
	* RETURNS
	* On success it returns the integer value otherwise it returns 0.
	*
	* NOTES
	* Accepts: {whitespace} [+\|-] {digits}
	* No check is made for value overflow, only the lower 32 bits are assigned.
	* If str is NULL it crashes, as the native function does.
	*/
	int __cdecl _wtoi( LPCWSTR str )
	{
	return _wtol(str);
	}


	/*********************************************************************
	* _wtoi64 (NTDLL.@)
	*
	* Converts an unicode string to a large integer.
	*
	* PARAMS
	* str [I] Wstring to be converted
	*
	* RETURNS
	* On success it returns the integer value otherwise it returns 0.
	*
	* NOTES
	* Accepts: {whitespace} [+\|-] {digits}
	* No check is made for value overflow, only the lower 64 bits are assigned.
	* If str is NULL it crashes, as the native function does.
	*/
	LONGLONG __cdecl _wtoi64( LPCWSTR str )
	{
	ULONGLONG RunningTotal = 0;
	char bMinus = 0;

	while (isspaceW(*str)) {
	str++;
	} /* while */

	if (*str == '+') {
	str++;
	} else if (*str == '-') {
	bMinus = 1;
	str++;
	} /* if */

	while (str >= '0' && str <= '9') {
	RunningTotal = RunningTotal * 10 + *str - '0';
	str++;
	} /* while */

	return bMinus ? -RunningTotal : RunningTotal;
	}


	/***********************************************************************
	* _snwprintf (NTDLL.@)
	*/
	int __cdecl _snwprintf(WCHAR str, unsigned int len, const WCHAR format, ...)
	{
	int retval;
	va_list valist;
	va_start(valist, format);
	retval = vsnprintfW(str, len, format, valist);
	va_end(valist);
	return retval;
	}


	/***********************************************************************
	* swprintf (NTDLL.@)
	*/
	int __cdecl NTDLL_swprintf(WCHAR str, const WCHAR format, ...)
	{
	int retval;
	va_list valist;
	va_start(valist, format);
	retval = vsnprintfW(str, INT_MAX, format, valist);
	va_end(valist);
	return retval;
	}