/*
 * Copyright (C) 2007-2023 Xagasoft, All rights reserved.
 *
 * This file is part of the libbu++ library and is released under the
 * terms of the license contained in the file LICENSE.
 */

#include "bu/hash.h"

namespace Bu { subExceptionDef( HashException ) }

template<>
uint32_t Bu::__calcHashCode<const char *>( const char * const &k )
{
    if (k == NULL)
    {
        return 0;
    }
    
    unsigned long int nPos = 0;
    for( const char *s = k; *s; s++ )
    {
        nPos = *s + (nPos << 6) + (nPos << 16) - nPos;
    }

    return nPos;
}

template<> bool Bu::__cmpHashKeys<const char *>( const char * const &a, const char * const &b )
{
    if( a == b )
        return true;

    for(int j=0; a[j] == b[j]; j++ )
        if( a[j] == '\0' )
            return true;

    return false;
}

template<>
uint32_t Bu::__calcHashCode<char *>( char * const &k )
{
    if (k == NULL)
    {
        return 0;
    }
    
    unsigned long int nPos = 0;
    for( const char *s = k; *s; s++ )
    {
        nPos = *s + (nPos << 6) + (nPos << 16) - nPos;
    }

    return nPos;
}

template<> bool Bu::__cmpHashKeys<char *>( char * const &a, char * const &b )
{
    if( a == b )
        return true;

    for(int j=0; a[j] == b[j]; j++ )
        if( a[j] == '\0' )
            return true;

    return false;
}

