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Diffstat (limited to 'comphelper/source/streaming/memorystream.cxx')
| -rw-r--r-- | comphelper/source/streaming/memorystream.cxx | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/comphelper/source/streaming/memorystream.cxx b/comphelper/source/streaming/memorystream.cxx new file mode 100644 index 000000000000..5298b7511f09 --- /dev/null +++ b/comphelper/source/streaming/memorystream.cxx @@ -0,0 +1,247 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_comphelper.hxx" + +#include "comphelper_module.hxx" + +#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/implbase4.hxx> + +#include <string.h> +#include <vector> + +using ::rtl::OUString; +using ::cppu::OWeakObject; +using ::cppu::WeakImplHelper4; +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 WeakImplHelper4 < XStream, XSeekableInputStream, XOutputStream, XTruncate > +{ +public: + UNOMemoryStream(); + virtual ~UNOMemoryStream(); + + // XStream + virtual Reference< XInputStream > SAL_CALL getInputStream( ) throw (RuntimeException); + virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) throw (RuntimeException); + + // XInputStream + virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException); + virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException); + virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException); + virtual sal_Int32 SAL_CALL available() throw (NotConnectedException, IOException, RuntimeException); + virtual void SAL_CALL closeInput() throw (NotConnectedException, IOException, RuntimeException); + + // XSeekable + virtual void SAL_CALL seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException); + virtual sal_Int64 SAL_CALL getPosition() throw (IOException, RuntimeException); + virtual sal_Int64 SAL_CALL getLength() throw (IOException, RuntimeException); + + // XOutputStream + virtual void SAL_CALL writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException); + virtual void SAL_CALL flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException); + virtual void SAL_CALL closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException); + + // XTruncate + virtual void SAL_CALL truncate() throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException); + + // XServiceInfo - static versions (used for component registration) + static ::rtl::OUString SAL_CALL getImplementationName_static(); + static Sequence< ::rtl::OUString > SAL_CALL getSupportedServiceNames_static(); + static Reference< XInterface > SAL_CALL Create( const Reference< ::com::sun::star::uno::XComponentContext >& ); + +private: + std::vector< sal_Int8 > maData; + sal_Int32 mnCursor; +}; + +UNOMemoryStream::UNOMemoryStream() +: mnCursor(0) +{ +} + +UNOMemoryStream::~UNOMemoryStream() +{ +} + +// XStream +Reference< XInputStream > SAL_CALL UNOMemoryStream::getInputStream( ) throw (RuntimeException) +{ + return this; +} + +Reference< XOutputStream > SAL_CALL UNOMemoryStream::getOutputStream( ) throw (RuntimeException) +{ + return this; +} + +// XInputStream +sal_Int32 SAL_CALL UNOMemoryStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException) +{ + if( nBytesToRead < 0 ) + throw IOException(); + + nBytesToRead = std::min( nBytesToRead, available() ); + aData.realloc( nBytesToRead ); + + if( nBytesToRead ) + { + sal_Int8* pData = static_cast<sal_Int8*>(&(*maData.begin())); + sal_Int8* pCursor = &((pData)[mnCursor]); + memcpy( (void*)aData.getArray(), (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) +{ + return readBytes( aData, nMaxBytesToRead ); +} + +void SAL_CALL UNOMemoryStream::skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException) +{ + if( nBytesToSkip < 0 ) + throw IOException(); + + mnCursor += std::min( nBytesToSkip, available() ); +} + +sal_Int32 SAL_CALL UNOMemoryStream::available() throw (NotConnectedException, IOException, RuntimeException) +{ + return static_cast< sal_Int32 >( maData.size() ) - mnCursor; +} + +void SAL_CALL UNOMemoryStream::closeInput() throw (NotConnectedException, IOException, RuntimeException) +{ + mnCursor = 0; +} + +// XSeekable +void SAL_CALL UNOMemoryStream::seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException) +{ + if( (location < 0) || (location > SAL_MAX_INT32) ) + throw IllegalArgumentException( OUString(RTL_CONSTASCII_USTRINGPARAM("this implementation does not support more than 2GB!")), Reference< XInterface >(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) +{ + return static_cast< sal_Int64 >( mnCursor ); +} + +sal_Int64 SAL_CALL UNOMemoryStream::getLength() throw (IOException, RuntimeException) +{ + return static_cast< sal_Int64 >( maData.size() ); +} + +// XOutputStream +void SAL_CALL UNOMemoryStream::writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException) +{ + 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( OUString(RTL_CONSTASCII_USTRINGPARAM("this implementation does not support more than 2GB!")), Reference< XInterface >(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 = static_cast<sal_Int8*>(&(*maData.begin())); + sal_Int8* pCursor = &(pData[mnCursor]); + memcpy( (void*)pCursor, (void*)aData.getConstArray(), nBytesToWrite ); + + mnCursor += nBytesToWrite; + } +} + +void SAL_CALL UNOMemoryStream::flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException) +{ +} + +void SAL_CALL UNOMemoryStream::closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException) +{ + mnCursor = 0; +} + +//XTruncate +void SAL_CALL UNOMemoryStream::truncate() throw (IOException, RuntimeException) +{ + maData.resize( 0 ); + mnCursor = 0; +} + +::rtl::OUString SAL_CALL UNOMemoryStream::getImplementationName_static() +{ + static const OUString sImplName( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.comp.MemoryStream" ) ); + return sImplName; +} + +Sequence< ::rtl::OUString > SAL_CALL UNOMemoryStream::getSupportedServiceNames_static() +{ + Sequence< OUString > aSeq(1); + aSeq[0] = getImplementationName_static(); + return aSeq; +} + +Reference< XInterface > SAL_CALL UNOMemoryStream::Create( + const Reference< XComponentContext >& ) +{ + return static_cast<OWeakObject*>(new UNOMemoryStream()); +} + +} // namespace comphelper + +void createRegistryInfo_UNOMemoryStream() +{ + static ::comphelper::module::OAutoRegistration< ::comphelper::UNOMemoryStream > aAutoRegistration; +} |