学步园

/******************
 确保串尾汉字的完整
 ******************/
int z_chi_nohalf(const char *s, int l)
{
    int len = 0, i = 0;

    /*
     * while( *s && (l-- > 0) ) if( ! isascii( *(s++) ) ) i++;
     * if( i % 2 ) *(s - 1) = 0;
     * *s = 0;
     */

    if( s == NULL || *s == 0 || l <= 0 ) return(0);

    while( *s )
    {
        if( (*s & 0x80) == 0 )
        {
            i ++;
            s ++;
            len ++;
        }
        else
        {
            if( *(s + 1) == 0 ) break;

            i += 2;
            s += 2;
            len += 2;
        }

        if( i == l ) break;
        else if( i > l )
        {
            len -= 2;
            break;
        }
    }

    return(len);
}