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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/* -*- 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 .
*/
#include <algorithm>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/io/XSeekableInputStream.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <osl/diagnose.h>
#include <string.h>
#include <vector>
using ::cppu::OWeakObject;
using ::cppu::WeakImplHelper;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::osl;
namespace comphelper
{
class UNOMemoryStream : public WeakImplHelper<XServiceInfo, XStream, XSeekableInputStream, XOutputStream, XTruncate>
{
public:
UNOMemoryStream();
virtual ~UNOMemoryStream() override;
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() throw (css::uno::RuntimeException, std::exception) override;
virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) throw (css::uno::RuntimeException, std::exception) override;
virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() throw (css::uno::RuntimeException, std::exception) override;
// XStream
virtual Reference< XInputStream > SAL_CALL getInputStream( ) throw (RuntimeException, std::exception) override;
virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) throw (RuntimeException, std::exception) override;
// XInputStream
virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) override;
virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) override;
virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) override;
virtual sal_Int32 SAL_CALL available() throw (NotConnectedException, IOException, RuntimeException, std::exception) override;
virtual void SAL_CALL closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception) override;
// XSeekable
virtual void SAL_CALL seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException, std::exception) override;
virtual sal_Int64 SAL_CALL getPosition() throw (IOException, RuntimeException, std::exception) override;
virtual sal_Int64 SAL_CALL getLength() throw (IOException, RuntimeException, std::exception) override;
// XOutputStream
virtual void SAL_CALL writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) override;
virtual void SAL_CALL flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) override;
virtual void SAL_CALL closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) override;
// XTruncate
virtual void SAL_CALL truncate() throw (css::io::IOException, css::uno::RuntimeException, std::exception) override;
private:
std::vector< sal_Int8 > maData;
sal_Int32 mnCursor;
};
UNOMemoryStream::UNOMemoryStream()
: mnCursor(0)
{
}
UNOMemoryStream::~UNOMemoryStream()
{
}
// XServiceInfo
OUString SAL_CALL UNOMemoryStream::getImplementationName() throw (css::uno::RuntimeException, std::exception)
{
return OUString("com.sun.star.comp.MemoryStream");
}
sal_Bool SAL_CALL UNOMemoryStream::supportsService(const OUString& ServiceName) throw (css::uno::RuntimeException, std::exception)
{
return cppu::supportsService(this, ServiceName);
}
css::uno::Sequence<OUString> SAL_CALL UNOMemoryStream::getSupportedServiceNames() throw (css::uno::RuntimeException, std::exception)
{
return { "com.sun.star.comp.MemoryStream" };
}
// XStream
Reference< XInputStream > SAL_CALL UNOMemoryStream::getInputStream( ) throw (RuntimeException, std::exception)
{
return this;
}
Reference< XOutputStream > SAL_CALL UNOMemoryStream::getOutputStream( ) throw (RuntimeException, std::exception)
{
return this;
}
// XInputStream
sal_Int32 SAL_CALL UNOMemoryStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
{
if( nBytesToRead < 0 )
throw IOException();
nBytesToRead = std::min( nBytesToRead, available() );
aData.realloc( nBytesToRead );
if( nBytesToRead )
{
sal_Int8* pData = &(*maData.begin());
sal_Int8* pCursor = &((pData)[mnCursor]);
memcpy( static_cast<void*>(aData.getArray()), static_cast<void*>(pCursor), nBytesToRead );
mnCursor += nBytesToRead;
}
return nBytesToRead;
}
sal_Int32 SAL_CALL UNOMemoryStream::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
{
return readBytes( aData, nMaxBytesToRead );
}
void SAL_CALL UNOMemoryStream::skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
{
if( nBytesToSkip < 0 )
throw IOException();
mnCursor += std::min( nBytesToSkip, available() );
}
sal_Int32 SAL_CALL UNOMemoryStream::available() throw (NotConnectedException, IOException, RuntimeException, std::exception)
{
return static_cast< sal_Int32 >( maData.size() ) - mnCursor;
}
void SAL_CALL UNOMemoryStream::closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception)
{
mnCursor = 0;
}
// XSeekable
void SAL_CALL UNOMemoryStream::seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException, std::exception)
{
if( (location < 0) || (location > SAL_MAX_INT32) )
throw IllegalArgumentException("this implementation does not support more than 2GB!", static_cast<OWeakObject*>(this), 0 );
// seek operation should be able to resize the stream
if ( location > static_cast< sal_Int64 >( maData.size() ) )
maData.resize( static_cast< sal_Int32 >( location ) );
if ( location > static_cast< sal_Int64 >( maData.size() ) )
maData.resize( static_cast< sal_Int32 >( location ) );
mnCursor = static_cast< sal_Int32 >( location );
}
sal_Int64 SAL_CALL UNOMemoryStream::getPosition() throw (IOException, RuntimeException, std::exception)
{
return static_cast< sal_Int64 >( mnCursor );
}
sal_Int64 SAL_CALL UNOMemoryStream::getLength() throw (IOException, RuntimeException, std::exception)
{
return static_cast< sal_Int64 >( maData.size() );
}
// XOutputStream
void SAL_CALL UNOMemoryStream::writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
{
const sal_Int32 nBytesToWrite( aData.getLength() );
if( nBytesToWrite )
{
sal_Int64 nNewSize = static_cast< sal_Int64 >( mnCursor + nBytesToWrite );
if( nNewSize > SAL_MAX_INT32 )
{
OSL_ASSERT(false);
throw IOException("this implementation does not support more than 2GB!", static_cast<OWeakObject*>(this) );
}
if( static_cast< sal_Int32 >( nNewSize ) > static_cast< sal_Int32 >( maData.size() ) )
maData.resize( static_cast< sal_Int32 >( nNewSize ) );
sal_Int8* pData = &(*maData.begin());
sal_Int8* pCursor = &(pData[mnCursor]);
memcpy( pCursor, aData.getConstArray(), nBytesToWrite );
mnCursor += nBytesToWrite;
}
}
void SAL_CALL UNOMemoryStream::flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
{
}
void SAL_CALL UNOMemoryStream::closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
{
mnCursor = 0;
}
//XTruncate
void SAL_CALL UNOMemoryStream::truncate() throw (IOException, RuntimeException, std::exception)
{
maData.resize( 0 );
mnCursor = 0;
}
} // namespace comphelper
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * SAL_CALL
com_sun_star_comp_MemoryStream(
css::uno::XComponentContext *,
css::uno::Sequence<css::uno::Any> const &)
{
return cppu::acquire(new ::comphelper::UNOMemoryStream());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
