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/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
*
* Distributable under the terms of either the Apache License (Version 2.0) or
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_util_StringIntern_H
#define _lucene_util_StringIntern_H
#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif
#include "VoidMap.h"
CL_NS_DEF(util)
typedef CL_NS(util)::CLHashMap<const TCHAR*,int,CL_NS(util)::Compare::TChar,CL_NS(util)::Equals::TChar,CL_NS(util)::Deletor::tcArray, CL_NS(util)::Deletor::DummyInt32 > __wcsintrntype;
typedef CL_NS(util)::CLHashMap<const char*,int,CL_NS(util)::Compare::Char,CL_NS(util)::Equals::Char,CL_NS(util)::Deletor::acArray, CL_NS(util)::Deletor::DummyInt32 > __strintrntype;
/** Functions for intern'ing strings. This
* is a process of pooling strings thus using less memory,
* and furthermore allows intern'd strings to be directly
* compared:
* string1==string2, rather than _tcscmp(string1,string2)
*/
class CLStringIntern{
static __wcsintrntype stringPool;
static __strintrntype stringaPool;
STATIC_DEFINE_MUTEX(THIS_LOCK)
public:
/**
* Internalise the specified string.
* \return Returns a pointer to the internalised string
*/
static const char* internA(const char* str CL_FILELINEPARAM);
/**
* Uninternalise the specified string. Decreases
* the reference count and frees the string if
* reference count is zero
* \returns true if string was destroyed, otherwise false
*/
static bool uninternA(const char* str);
/**
* Internalise the specified string.
* \return Returns a pointer to the internalised string
*/
static const TCHAR* intern(const TCHAR* str CL_FILELINEPARAM);
/**
* Uninternalise the specified string. Decreases
* the reference count and frees the string if
* reference count is zero
* \returns true if string was destroyed, otherwise false
*/
static bool unintern(const TCHAR* str);
static void shutdown();
};
CL_NS_END
#endif
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