（模板）字符串hash

unsigned int ELFHash(char *str)
{
    unsigned int hash = 0;
    unsigned int x    = 0;

    while (*str)
    {
        hash = (hash << 4) + (*str++);
        if ((x = hash & 0xF0000000L) != 0)
        {
            hash ^= (x >> 24);
            hash &= ~x;
        }
    }

    return (hash & 0x7FFFFFFF);
}

// BKDR Hash Function

unsigned long HashString( char *lpszFileName, unsigned long dwHashType )
{ 
    unsigned char *key  = (unsigned char *)lpszFileName;
unsigned long seed1 = 0x7FED7FED;
unsigned long seed2 = 0xEEEEEEEE;
    int ch;

    while( *key != 0 )
    { 
        ch = toupper(*key++);

        seed1 = cryptTable[(dwHashType << 8) + ch] ^ (seed1 + seed2);
        seed2 = ch + seed1 + seed2 + (seed2 << 5) + 3; 
    }
    return seed1; 
}