1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
3 * This file is part of the LibreOffice project.
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/.
9 * This file incorporates work covered by the following license notice:
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 .
24 #include <boost/core/noinit_adaptor.hpp>
26 #include <com/sun/star/lang/IllegalArgumentException.hpp>
27 #include <com/sun/star/lang/XServiceInfo.hpp>
28 #include <com/sun/star/lang/XUnoTunnel.hpp>
29 #include <com/sun/star/io/IOException.hpp>
30 #include <com/sun/star/io/XStream.hpp>
31 #include <com/sun/star/io/XSeekableInputStream.hpp>
32 #include <com/sun/star/io/XTruncate.hpp>
33 //#include <com/sun/star/uno/XComponentContext.hpp>
34 #include <comphelper/bytereader.hxx>
35 #include <cppuhelper/implbase.hxx>
36 #include <cppuhelper/supportsservice.hxx>
37 #include <o3tl/safeint.hxx>
38 #include <osl/diagnose.h>
43 namespace com::sun::star::uno
{ class XComponentContext
; }
45 using ::cppu::OWeakObject
;
46 using ::cppu::WeakImplHelper
;
47 using namespace ::com::sun::star::io
;
48 using namespace ::com::sun::star::uno
;
49 using namespace ::com::sun::star::lang
;
50 using namespace ::osl
;
57 class UNOMemoryStream
:
58 public WeakImplHelper
<XServiceInfo
, XStream
, XSeekableInputStream
, XOutputStream
, XTruncate
>,
59 public comphelper::ByteWriter
65 virtual OUString SAL_CALL
getImplementationName() override
;
66 virtual sal_Bool SAL_CALL
supportsService(const OUString
& ServiceName
) override
;
67 virtual css::uno::Sequence
<OUString
> SAL_CALL
getSupportedServiceNames() override
;
70 virtual Reference
< XInputStream
> SAL_CALL
getInputStream( ) override
;
71 virtual Reference
< XOutputStream
> SAL_CALL
getOutputStream( ) override
;
74 virtual sal_Int32 SAL_CALL
readBytes( Sequence
< sal_Int8
>& aData
, sal_Int32 nBytesToRead
) override
;
75 virtual sal_Int32 SAL_CALL
readSomeBytes( Sequence
< sal_Int8
>& aData
, sal_Int32 nMaxBytesToRead
) override
;
76 virtual void SAL_CALL
skipBytes( sal_Int32 nBytesToSkip
) override
;
77 virtual sal_Int32 SAL_CALL
available() override
;
78 virtual void SAL_CALL
closeInput() override
;
81 virtual void SAL_CALL
seek( sal_Int64 location
) override
;
82 virtual sal_Int64 SAL_CALL
getPosition() override
;
83 virtual sal_Int64 SAL_CALL
getLength() override
;
86 virtual void SAL_CALL
writeBytes( const Sequence
< sal_Int8
>& aData
) override
;
87 virtual void SAL_CALL
flush() override
;
88 virtual void SAL_CALL
closeOutput() override
;
91 virtual void SAL_CALL
truncate() override
;
93 // comphelper::ByteWriter
94 virtual void writeBytes(const sal_Int8
* aData
, sal_Int32 nBytesToWrite
) override
;
97 std::vector
< sal_Int8
, boost::noinit_adaptor
<std::allocator
<sal_Int8
>> > maData
;
103 UNOMemoryStream::UNOMemoryStream()
106 maData
.reserve(1 * 1024 * 1024);
110 OUString SAL_CALL
UNOMemoryStream::getImplementationName()
112 return "com.sun.star.comp.MemoryStream";
115 sal_Bool SAL_CALL
UNOMemoryStream::supportsService(const OUString
& ServiceName
)
117 return cppu::supportsService(this, ServiceName
);
120 css::uno::Sequence
<OUString
> SAL_CALL
UNOMemoryStream::getSupportedServiceNames()
122 return { "com.sun.star.comp.MemoryStream" };
126 Reference
< XInputStream
> SAL_CALL
UNOMemoryStream::getInputStream( )
131 Reference
< XOutputStream
> SAL_CALL
UNOMemoryStream::getOutputStream( )
137 sal_Int32 SAL_CALL
UNOMemoryStream::readBytes( Sequence
< sal_Int8
>& aData
, sal_Int32 nBytesToRead
)
139 if( nBytesToRead
< 0 )
140 throw IOException("nBytesToRead < 0");
142 nBytesToRead
= std::min( nBytesToRead
, available() );
143 aData
.realloc( nBytesToRead
);
147 sal_Int8
* pData
= &(*maData
.begin());
148 sal_Int8
* pCursor
= &(pData
[mnCursor
]);
149 memcpy( aData
.getArray(), pCursor
, nBytesToRead
);
151 mnCursor
+= nBytesToRead
;
157 sal_Int32 SAL_CALL
UNOMemoryStream::readSomeBytes( Sequence
< sal_Int8
>& aData
, sal_Int32 nMaxBytesToRead
)
159 return readBytes( aData
, nMaxBytesToRead
);
162 void SAL_CALL
UNOMemoryStream::skipBytes( sal_Int32 nBytesToSkip
)
164 if( nBytesToSkip
< 0 )
165 throw IOException("nBytesToSkip < 0");
167 mnCursor
+= std::min( nBytesToSkip
, available() );
170 sal_Int32 SAL_CALL
UNOMemoryStream::available()
172 return std::min
<sal_Int64
>( SAL_MAX_INT32
, maData
.size() - mnCursor
);
175 void SAL_CALL
UNOMemoryStream::closeInput()
181 void SAL_CALL
UNOMemoryStream::seek( sal_Int64 location
)
183 if( (location
< 0) || (location
> SAL_MAX_INT32
) )
184 throw IllegalArgumentException("this implementation does not support more than 2GB!", static_cast<OWeakObject
*>(this), 0 );
186 // seek operation should be able to resize the stream
187 if ( o3tl::make_unsigned(location
) > maData
.size() )
188 maData
.resize( static_cast< sal_Int32
>( location
) );
190 mnCursor
= static_cast< sal_Int32
>( location
);
193 sal_Int64 SAL_CALL
UNOMemoryStream::getPosition()
195 return static_cast< sal_Int64
>( mnCursor
);
198 sal_Int64 SAL_CALL
UNOMemoryStream::getLength()
200 return static_cast< sal_Int64
>( maData
.size() );
204 void SAL_CALL
UNOMemoryStream::writeBytes( const Sequence
< sal_Int8
>& aData
)
206 writeBytes(aData
.getConstArray(), aData
.getLength());
209 void UNOMemoryStream::writeBytes( const sal_Int8
* pInData
, sal_Int32 nBytesToWrite
)
211 assert(nBytesToWrite
>= 0);
215 sal_Int64 nNewSize
= static_cast<sal_Int64
>(mnCursor
) + nBytesToWrite
;
216 if( nNewSize
> SAL_MAX_INT32
)
219 throw IOException("this implementation does not support more than 2GB!", static_cast<OWeakObject
*>(this) );
222 if( o3tl::make_unsigned( nNewSize
) > maData
.size() )
223 maData
.resize( nNewSize
);
225 sal_Int8
* pData
= &(*maData
.begin());
226 sal_Int8
* pCursor
= &(pData
[mnCursor
]);
227 memcpy(pCursor
, pInData
, nBytesToWrite
);
229 mnCursor
+= nBytesToWrite
;
232 void SAL_CALL
UNOMemoryStream::flush()
236 void SAL_CALL
UNOMemoryStream::closeOutput()
242 void SAL_CALL
UNOMemoryStream::truncate()
248 } // namespace comphelper
250 extern "C" SAL_DLLPUBLIC_EXPORT
css::uno::XInterface
*
251 com_sun_star_comp_MemoryStream(
252 css::uno::XComponentContext
*,
253 css::uno::Sequence
<css::uno::Any
> const &)
255 return cppu::acquire(new ::comphelper::UNOMemoryStream());
258 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */