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/*
* Copyright (C) 2000-2001 The Exult Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _HASH_UTILS_H_
#define _HASH_UTILS_H_
#include "exult_types.h"
#ifdef DONT_HAVE_HASH_MAP
# include <map>
#else
#if HAVE_EXT_HASH_MAP
# include <ext/hash_map>
# if (defined(__GNUC__) && (__GNUC__ == 3) && ( __GNUC_MINOR__ > 0))
using __gnu_cxx::hash_map;
# else
using std::hash_map;
# endif
#else
# include <hash_map>
#endif
# ifdef MACOS
using Metrowerks::hash_map;
# endif
#endif
#ifdef DONT_HAVE_HASH_SET
# include <set>
#else
#if HAVE_EXT_HASH_SET
# include <ext/hash_set>
# if (defined(__GNUC__) && (__GNUC__ == 3) && ( __GNUC_MINOR__ > 0))
using __gnu_cxx::hash_set;
# else
using std::hash_set;
# endif
#else
# include <hash_set>
#endif
# ifdef MACOS
using Metrowerks::hash_set;
# endif
#endif
#if defined(DONT_HAVE_HASH_MAP) && defined(DONT_HAVE_HASH_SET)
/*
* For testing if a string is "less" than another:
*/
struct ltstr {
bool operator()(const char* s1, const char* s2) const {
return (std::strcmp(s1, s2) < 0);
}
};
#else
/*
* Hash function for strings:
*/
struct hashstr
{
long operator() (const char *str) const
{
const uint32 m = 4294967291u;
uint32 result = 0;
for (; *str != '\0'; ++str)
result = ((result << 8) + *str) % m;
return long(result);
}
};
/*
* For testing if two strings match:
*/
struct eqstr
{
bool operator()(const char* s1, const char* s2) const {
return std::strcmp(s1, s2) == 0;
}
};
#endif
#endif /* _HASH_UTILS_H_ */
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