106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SW_INC_BPARR_HXX
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#define INCLUDED_SW_INC_BPARR_HXX
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#include <assert.h>
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#include <tools/solar.h>
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#include <swdllapi.h>
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struct BlockInfo;
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class BigPtrArray;
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class BigPtrEntry
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{
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friend class BigPtrArray;
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BlockInfo* pBlock;
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sal_uInt16 nOffset;
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public:
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BigPtrEntry() : pBlock(nullptr), nOffset(0) {}
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virtual ~BigPtrEntry() {}
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inline sal_uLong GetPos() const;
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inline BigPtrArray& GetArray() const;
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};
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typedef BigPtrEntry* ElementPtr;
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// 1000 entries per Block = a bit less then 4K
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#define MAXENTRY 1000
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// number of entries that may remain free during compression
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// this value is for the worst case; because we defined MAXBLOCK with ca 25%
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// overhead, 80% = 800 entries are enough
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// if complete compression is desired, 100 has to be specified
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#define COMPRESSLVL 80
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struct BlockInfo { // block info:
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BigPtrArray* pBigArr; ///< in this array the block is located
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ElementPtr* pData; ///< data block
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sal_uLong nStart, nEnd; ///< start- and end index
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sal_uInt16 nElem; ///< number of elements
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};
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class SW_DLLPUBLIC BigPtrArray
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{
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protected:
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BlockInfo** ppInf; // block info
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sal_uLong nSize; ///< number of elements
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sal_uInt16 nMaxBlock; ///< current max. number of blocks
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sal_uInt16 nBlock; ///< number of blocks
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mutable
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sal_uInt16 nCur; ///< last used block
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sal_uInt16 Index2Block( sal_uLong ) const; ///< block search
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BlockInfo* InsBlock( sal_uInt16 ); ///< insert block
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void BlockDel( sal_uInt16 ); ///< some blocks were deleted
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void UpdIndex( sal_uInt16 ); ///< recalculate indices
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// fill all blocks
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sal_uInt16 Compress();
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public:
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BigPtrArray();
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~BigPtrArray();
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sal_uLong Count() const { return nSize; }
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void Insert( const ElementPtr& r, sal_uLong pos );
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void Remove( sal_uLong pos, sal_uLong n = 1 );
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void Move( sal_uLong from, sal_uLong to );
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void Replace( sal_uLong pos, const ElementPtr& r);
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ElementPtr operator[]( sal_uLong ) const;
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};
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inline sal_uLong BigPtrEntry::GetPos() const
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{
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assert(this == pBlock->pData[ nOffset ]); // element not in the block
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return pBlock->nStart + nOffset;
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}
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inline BigPtrArray& BigPtrEntry::GetArray() const
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{
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return *pBlock->pBigArr;
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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