LibreOffice Module sw (master) 1
bparr.hxx
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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20#pragma once
21
22#include <assert.h>
23
24#include "swdllapi.h"
25#include <array>
26#include <memory>
27
28struct BlockInfo;
29class BigPtrArray;
30
32{
33 friend class BigPtrArray;
35 sal_uInt16 m_nOffset;
36public:
37 BigPtrEntry() : m_pBlock(nullptr), m_nOffset(0) {}
38 BigPtrEntry(BigPtrEntry const &) = default;
39 virtual ~BigPtrEntry() = default;
40 BigPtrEntry & operator =(BigPtrEntry const &) = default;
41
42 inline sal_Int32 GetPos() const;
43 inline BigPtrArray& GetArray() const;
44};
45
46// 1000 entries per Block = a bit less than 4K
47#define MAXENTRY 1000
48
49// number of entries that may remain free during compression
50// this value is for the worst case; because we defined MAXBLOCK with ca 25%
51// overhead, 80% = 800 entries are enough
52// if complete compression is desired, 100 has to be specified
53#define COMPRESSLVL 80
54
55struct BlockInfo final
56{
58 sal_Int32 nStart, nEnd;
59 sal_uInt16 nElem;
60 std::array<BigPtrEntry*, MAXENTRY>
62};
63
65{
66protected:
67 std::unique_ptr<BlockInfo*[]>
69 sal_Int32 m_nSize;
70 sal_uInt16 m_nMaxBlock;
71 sal_uInt16 m_nBlock;
72 mutable
73 sal_uInt16 m_nCur;
74
75 sal_uInt16 Index2Block( sal_Int32 ) const;
76 BlockInfo* InsBlock( sal_uInt16 );
77 void BlockDel( sal_uInt16 );
78 void UpdIndex( sal_uInt16 );
79
80 // fill all blocks
81 sal_uInt16 Compress();
82
83public:
86
87 sal_Int32 Count() const { return m_nSize; }
88
89 void Insert( BigPtrEntry* p, sal_Int32 pos );
90 void Remove( sal_Int32 pos, sal_Int32 n = 1 );
91 void Move( sal_Int32 from, sal_Int32 to );
92 void Replace( sal_Int32 pos, BigPtrEntry* p);
93
94 BigPtrEntry* operator[]( sal_Int32 ) const;
95};
96
97inline sal_Int32 BigPtrEntry::GetPos() const
98{
99 assert(this == m_pBlock->mvData[ m_nOffset ]); // element not in the block
100 return m_pBlock->nStart + m_nOffset;
101}
102
104{
105 return *m_pBlock->pBigArr;
106}
107
108/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
sal_uInt16 m_nBlock
number of blocks
Definition: bparr.hxx:71
sal_Int32 Count() const
Definition: bparr.hxx:87
std::unique_ptr< BlockInfo *[]> m_ppInf
block info
Definition: bparr.hxx:68
sal_uInt16 m_nMaxBlock
current max. number of blocks
Definition: bparr.hxx:70
sal_Int32 m_nSize
number of elements
Definition: bparr.hxx:69
sal_uInt16 m_nCur
last used block
Definition: bparr.hxx:73
sal_uInt16 m_nOffset
Definition: bparr.hxx:35
sal_Int32 GetPos() const
Definition: bparr.hxx:97
BigPtrEntry(BigPtrEntry const &)=default
BigPtrEntry()
Definition: bparr.hxx:37
virtual ~BigPtrEntry()=default
BigPtrEntry & operator=(BigPtrEntry const &)=default
BigPtrArray & GetArray() const
Definition: bparr.hxx:103
BlockInfo * m_pBlock
Definition: bparr.hxx:34
virtual void Insert(SotClipboardFormatId nFormat, const OUString &rFormatName) override
sal_uInt32 m_nSize
sal_uInt16 nElem
number of elements
Definition: bparr.hxx:59
BigPtrArray * pBigArr
in this array the block is located
Definition: bparr.hxx:57
std::array< BigPtrEntry *, MAXENTRY > mvData
data block
Definition: bparr.hxx:61
sal_Int32 nEnd
start- and end index
Definition: bparr.hxx:58
sal_Int32 nStart
Definition: bparr.hxx:58
#define SW_DLLPUBLIC
Definition: swdllapi.h:28