1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
#define INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
// Save NDEBUG state
#ifdef NDEBUG
#define STREAMHELPER_HXX_HAD_NDEBUG
#undef NDEBUG
#endif
#if OSL_DEBUG_LEVEL == 0
#define NDEBUG
#endif
#include <assert.h>
#define Max( a, b ) (((a)>(b)) ? (a) : (b) )
#define Min( a, b ) (((a)<(b)) ? (a) : (b) )
namespace io_stm
{
class IRingBuffer_OutOfBoundsException :
public Exception
{};
class IRingBuffer_OutOfMemoryException :
public Exception
{};
class MemRingBuffer
{
public:
MemRingBuffer();
virtual ~MemRingBuffer();
/***
* overwrites data at given position. Size is automatically extended, when
* data is written beyond end.
***/
void writeAt( sal_Int32 nPos, const Sequence<sal_Int8> &)
throw( IRingBuffer_OutOfMemoryException,
IRingBuffer_OutOfBoundsException );
void readAt( sal_Int32 nPos, Sequence<sal_Int8> & , sal_Int32 nBytesToRead ) const
throw( IRingBuffer_OutOfBoundsException );
sal_Int32 getSize() const throw();
void forgetFromStart( sal_Int32 nBytesToForget ) throw(IRingBuffer_OutOfBoundsException);
virtual void shrink() throw();
private:
void resizeBuffer( sal_Int32 nMinSize ) throw( IRingBuffer_OutOfMemoryException );
inline void checkInvariants() {
assert( m_nBufferLen >= 0 );
assert( m_nOccupiedBuffer >= 0 );
assert( m_nOccupiedBuffer <= m_nBufferLen );
assert( m_nStart >= 0 );
assert( 0 == m_nStart || m_nStart < m_nBufferLen );
(void) this; // avoid loplugin:staticmethods
}
sal_Int8 *m_p;
sal_Int32 m_nBufferLen;
sal_Int32 m_nStart;
sal_Int32 m_nOccupiedBuffer;
};
class I_FIFO_OutOfBoundsException :
public Exception
{};
class I_FIFO_OutOfMemoryException :
public Exception
{};
class MemFIFO :
private MemRingBuffer
{
public:
void write( const Sequence<sal_Int8> &)
throw( I_FIFO_OutOfMemoryException, I_FIFO_OutOfBoundsException );
void read( Sequence<sal_Int8> & , sal_Int32 nBytesToRead )
throw( I_FIFO_OutOfBoundsException );
void skip( sal_Int32 nBytesToSkip )
throw( I_FIFO_OutOfBoundsException );
sal_Int32 getSize() const throw()
{ return MemRingBuffer::getSize(); }
virtual void shrink() throw() SAL_OVERRIDE
{ MemRingBuffer::shrink(); }
};
// Restore NDEBUG state
#ifdef STREAMHELPER_HXX_HAD_NDEBUG
#define NDEBUG
#else
#undef NDEBUG
#endif
}
#endif // INCLUDED_IO_SOURCE_STM_STREAMHELPER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|