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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 : #include <algorithm>
21 :
22 : #include "comphelper_module.hxx"
23 : #include "comphelper_services.hxx"
24 :
25 : #include <com/sun/star/io/XStream.hpp>
26 : #include <com/sun/star/io/XSeekableInputStream.hpp>
27 : #include <com/sun/star/io/XTruncate.hpp>
28 : #include <com/sun/star/uno/XComponentContext.hpp>
29 : #include <cppuhelper/implbase4.hxx>
30 :
31 : #include <string.h>
32 : #include <vector>
33 :
34 : using ::cppu::OWeakObject;
35 : using ::cppu::WeakImplHelper4;
36 : using namespace ::com::sun::star::io;
37 : using namespace ::com::sun::star::uno;
38 : using namespace ::com::sun::star::lang;
39 : using namespace ::osl;
40 :
41 : namespace comphelper
42 : {
43 :
44 : class UNOMemoryStream : public WeakImplHelper4 < XStream, XSeekableInputStream, XOutputStream, XTruncate >
45 : {
46 : public:
47 : UNOMemoryStream();
48 : virtual ~UNOMemoryStream();
49 :
50 : // XStream
51 : virtual Reference< XInputStream > SAL_CALL getInputStream( ) throw (RuntimeException, std::exception) SAL_OVERRIDE;
52 : virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) throw (RuntimeException, std::exception) SAL_OVERRIDE;
53 :
54 : // XInputStream
55 : virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
56 : virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
57 : virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
58 : virtual sal_Int32 SAL_CALL available() throw (NotConnectedException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
59 : virtual void SAL_CALL closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
60 :
61 : // XSeekable
62 : virtual void SAL_CALL seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
63 : virtual sal_Int64 SAL_CALL getPosition() throw (IOException, RuntimeException, std::exception) SAL_OVERRIDE;
64 : virtual sal_Int64 SAL_CALL getLength() throw (IOException, RuntimeException, std::exception) SAL_OVERRIDE;
65 :
66 : // XOutputStream
67 : virtual void SAL_CALL writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
68 : virtual void SAL_CALL flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
69 : virtual void SAL_CALL closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
70 :
71 : // XTruncate
72 : virtual void SAL_CALL truncate() throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
73 :
74 : // XServiceInfo - static versions (used for component registration)
75 : static OUString SAL_CALL getImplementationName_static();
76 : static Sequence< OUString > SAL_CALL getSupportedServiceNames_static();
77 : static Reference< XInterface > SAL_CALL Create( const Reference< ::com::sun::star::uno::XComponentContext >& );
78 :
79 : private:
80 : std::vector< sal_Int8 > maData;
81 : sal_Int32 mnCursor;
82 : };
83 :
84 50126 : UNOMemoryStream::UNOMemoryStream()
85 50126 : : mnCursor(0)
86 : {
87 50126 : }
88 :
89 100212 : UNOMemoryStream::~UNOMemoryStream()
90 : {
91 100212 : }
92 :
93 : // XStream
94 109360 : Reference< XInputStream > SAL_CALL UNOMemoryStream::getInputStream( ) throw (RuntimeException, std::exception)
95 : {
96 109360 : return this;
97 : }
98 :
99 77446 : Reference< XOutputStream > SAL_CALL UNOMemoryStream::getOutputStream( ) throw (RuntimeException, std::exception)
100 : {
101 77446 : return this;
102 : }
103 :
104 : // XInputStream
105 85446 : sal_Int32 SAL_CALL UNOMemoryStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
106 : {
107 85446 : if( nBytesToRead < 0 )
108 0 : throw IOException();
109 :
110 85446 : nBytesToRead = std::min( nBytesToRead, available() );
111 85446 : aData.realloc( nBytesToRead );
112 :
113 85446 : if( nBytesToRead )
114 : {
115 54546 : sal_Int8* pData = static_cast<sal_Int8*>(&(*maData.begin()));
116 54546 : sal_Int8* pCursor = &((pData)[mnCursor]);
117 54546 : memcpy( (void*)aData.getArray(), (void*)pCursor, nBytesToRead );
118 :
119 54546 : mnCursor += nBytesToRead;
120 : }
121 :
122 85446 : return nBytesToRead;
123 : }
124 :
125 43368 : sal_Int32 SAL_CALL UNOMemoryStream::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
126 : {
127 43368 : return readBytes( aData, nMaxBytesToRead );
128 : }
129 :
130 0 : void SAL_CALL UNOMemoryStream::skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
131 : {
132 0 : if( nBytesToSkip < 0 )
133 0 : throw IOException();
134 :
135 0 : mnCursor += std::min( nBytesToSkip, available() );
136 0 : }
137 :
138 105156 : sal_Int32 SAL_CALL UNOMemoryStream::available() throw (NotConnectedException, IOException, RuntimeException, std::exception)
139 : {
140 105156 : return static_cast< sal_Int32 >( maData.size() ) - mnCursor;
141 : }
142 :
143 96404 : void SAL_CALL UNOMemoryStream::closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception)
144 : {
145 96404 : mnCursor = 0;
146 96404 : }
147 :
148 : // XSeekable
149 66736 : void SAL_CALL UNOMemoryStream::seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException, std::exception)
150 : {
151 66736 : if( (location < 0) || (location > SAL_MAX_INT32) )
152 0 : throw IllegalArgumentException("this implementation does not support more than 2GB!", static_cast<OWeakObject*>(this), 0 );
153 :
154 : // seek operation should be able to resize the stream
155 66736 : if ( location > static_cast< sal_Int64 >( maData.size() ) )
156 26 : maData.resize( static_cast< sal_Int32 >( location ) );
157 :
158 66736 : if ( location > static_cast< sal_Int64 >( maData.size() ) )
159 0 : maData.resize( static_cast< sal_Int32 >( location ) );
160 :
161 66736 : mnCursor = static_cast< sal_Int32 >( location );
162 66736 : }
163 :
164 104622 : sal_Int64 SAL_CALL UNOMemoryStream::getPosition() throw (IOException, RuntimeException, std::exception)
165 : {
166 104622 : return static_cast< sal_Int64 >( mnCursor );
167 : }
168 :
169 23316 : sal_Int64 SAL_CALL UNOMemoryStream::getLength() throw (IOException, RuntimeException, std::exception)
170 : {
171 23316 : return static_cast< sal_Int64 >( maData.size() );
172 : }
173 :
174 : // XOutputStream
175 109048 : void SAL_CALL UNOMemoryStream::writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
176 : {
177 109048 : const sal_Int32 nBytesToWrite( aData.getLength() );
178 109048 : if( nBytesToWrite )
179 : {
180 108938 : sal_Int64 nNewSize = static_cast< sal_Int64 >( mnCursor + nBytesToWrite );
181 108938 : if( nNewSize > SAL_MAX_INT32 )
182 : {
183 : OSL_ASSERT(false);
184 0 : throw IOException("this implementation does not support more than 2GB!", static_cast<OWeakObject*>(this) );
185 : }
186 :
187 108938 : if( static_cast< sal_Int32 >( nNewSize ) > static_cast< sal_Int32 >( maData.size() ) )
188 108518 : maData.resize( static_cast< sal_Int32 >( nNewSize ) );
189 :
190 108938 : sal_Int8* pData = static_cast<sal_Int8*>(&(*maData.begin()));
191 108938 : sal_Int8* pCursor = &(pData[mnCursor]);
192 108938 : memcpy( (void*)pCursor, (void*)aData.getConstArray(), nBytesToWrite );
193 :
194 108938 : mnCursor += nBytesToWrite;
195 : }
196 109048 : }
197 :
198 3836 : void SAL_CALL UNOMemoryStream::flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
199 : {
200 3836 : }
201 :
202 47342 : void SAL_CALL UNOMemoryStream::closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
203 : {
204 47342 : mnCursor = 0;
205 47342 : }
206 :
207 : //XTruncate
208 70 : void SAL_CALL UNOMemoryStream::truncate() throw (IOException, RuntimeException, std::exception)
209 : {
210 70 : maData.resize( 0 );
211 70 : mnCursor = 0;
212 70 : }
213 :
214 568 : OUString SAL_CALL UNOMemoryStream::getImplementationName_static()
215 : {
216 568 : return OUString("com.sun.star.comp.MemoryStream");
217 : }
218 :
219 284 : Sequence< OUString > SAL_CALL UNOMemoryStream::getSupportedServiceNames_static()
220 : {
221 284 : Sequence< OUString > aSeq(1);
222 284 : aSeq[0] = getImplementationName_static();
223 284 : return aSeq;
224 : }
225 :
226 50126 : Reference< XInterface > SAL_CALL UNOMemoryStream::Create(
227 : SAL_UNUSED_PARAMETER const Reference< XComponentContext >& )
228 : {
229 50126 : return static_cast<OWeakObject*>(new UNOMemoryStream());
230 : }
231 :
232 : } // namespace comphelper
233 :
234 284 : void createRegistryInfo_UNOMemoryStream()
235 : {
236 284 : static ::comphelper::module::OAutoRegistration< ::comphelper::UNOMemoryStream > aAutoRegistration;
237 284 : }
238 :
239 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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