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/*
* Copyright (C) 2007-2008 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 "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;
}
template<> uint32_t Bu::__calcHashCode<std::string>( const std::string &k )
{
std::string::size_type j, sz = k.size();
const char *s = k.c_str();
unsigned long int nPos = 0;
for( j = 0; j < sz; j++, s++ )
{
nPos = *s + (nPos << 6) + (nPos << 16) - nPos;
}
return nPos;
}
template<> bool Bu::__cmpHashKeys<std::string>( const std::string &a, const std::string &b )
{
return a == b;
}
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