/*
 * CRTDLL multi-byte string functions
 *
 * Copyright 1999 Alexandre Julliard
 */

#include "crtdll.h"


DEFAULT_DEBUG_CHANNEL(crtdll);


/*********************************************************************
 *                  _mbsicmp      (CRTDLL.204)
 */
int __cdecl CRTDLL__mbsicmp(unsigned char *x,unsigned char *y)
{
    do {
	if (!*x)
	    return !!*y;
	if (!*y)
	    return !!*x;
	/* FIXME: MBCS handling... */
	if (*x!=*y)
	    return 1;
        x++;
        y++;
    } while (1);
}


/*********************************************************************
 *           CRTDLL__mbsinc    (CRTDLL.205)
 */
LPSTR __cdecl CRTDLL__mbsinc( LPCSTR str )
{
    if (IsDBCSLeadByte( *str )) str++;
    return (LPSTR)(str + 1);
}


/*********************************************************************
 *           CRTDLL__mbslen    (CRTDLL.206)
 */
INT __cdecl CRTDLL__mbslen( LPCSTR str )
{
    INT len;
    for (len = 0; *str; len++, str++) if (IsDBCSLeadByte(str[0]) && str[1]) str++;
    return len;
}



/*********************************************************************
 *                  _mbsrchr           (CRTDLL.223)
 */
LPSTR __cdecl CRTDLL__mbsrchr(LPSTR s,CHAR x)
{
    /* FIXME: handle multibyte strings */
    return strrchr(s,x);
}


/*********************************************************************
 *           CRTDLL_mbtowc    (CRTDLL.430)
 */
INT __cdecl CRTDLL_mbtowc( WCHAR *dst, LPCSTR str, INT n )
{
    if (n <= 0) return 0;
    if (!str) return 0;
    if (!MultiByteToWideChar( CP_ACP, 0, str, n, dst, 1 )) return 0;
    /* return the number of bytes from src that have been used */
    if (!*str) return 0;
    if (n >= 2 && IsDBCSLeadByte(*str) && str[1]) return 2;
    return 1;
}


/*********************************************************************
 *                  _mbccpy           (CRTDLL.??)
 *
 * Copy one multibyte character to another
 */
VOID __cdecl CRTDLL__mbccpy(LPSTR dest, LPSTR src)
{
  FIXME("MBCS copy treated as ASCII\n");
  *dest = *src;
}