241 lines
9.3 KiB
C++
241 lines
9.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <algorithm>
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#include "comphelper_module.hxx"
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#include "comphelper_services.hxx"
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#include <com/sun/star/io/XStream.hpp>
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#include <com/sun/star/io/XSeekableInputStream.hpp>
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#include <com/sun/star/io/XTruncate.hpp>
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#include <com/sun/star/uno/XComponentContext.hpp>
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#include <cppuhelper/implbase4.hxx>
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#include <osl/diagnose.h>
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#include <string.h>
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#include <vector>
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using ::cppu::OWeakObject;
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using ::cppu::WeakImplHelper4;
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using namespace ::com::sun::star::io;
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star::lang;
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using namespace ::osl;
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namespace comphelper
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{
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class UNOMemoryStream : public WeakImplHelper4 < XStream, XSeekableInputStream, XOutputStream, XTruncate >
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{
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public:
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UNOMemoryStream();
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virtual ~UNOMemoryStream();
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// XStream
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virtual Reference< XInputStream > SAL_CALL getInputStream( ) throw (RuntimeException, std::exception) SAL_OVERRIDE;
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virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) throw (RuntimeException, std::exception) SAL_OVERRIDE;
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// XInputStream
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virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual sal_Int32 SAL_CALL available() throw (NotConnectedException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual void SAL_CALL closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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// XSeekable
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virtual void SAL_CALL seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual sal_Int64 SAL_CALL getPosition() throw (IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual sal_Int64 SAL_CALL getLength() throw (IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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// XOutputStream
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virtual void SAL_CALL writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual void SAL_CALL flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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virtual void SAL_CALL closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception) SAL_OVERRIDE;
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// XTruncate
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virtual void SAL_CALL truncate() throw (::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
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// XServiceInfo - static versions (used for component registration)
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static OUString SAL_CALL getImplementationName_static();
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static Sequence< OUString > SAL_CALL getSupportedServiceNames_static();
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static Reference< XInterface > SAL_CALL Create( const Reference< ::com::sun::star::uno::XComponentContext >& );
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private:
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std::vector< sal_Int8 > maData;
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sal_Int32 mnCursor;
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};
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UNOMemoryStream::UNOMemoryStream()
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: mnCursor(0)
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{
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}
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UNOMemoryStream::~UNOMemoryStream()
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{
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}
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// XStream
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Reference< XInputStream > SAL_CALL UNOMemoryStream::getInputStream( ) throw (RuntimeException, std::exception)
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{
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return this;
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}
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Reference< XOutputStream > SAL_CALL UNOMemoryStream::getOutputStream( ) throw (RuntimeException, std::exception)
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{
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return this;
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}
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// XInputStream
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sal_Int32 SAL_CALL UNOMemoryStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
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{
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if( nBytesToRead < 0 )
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throw IOException();
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nBytesToRead = std::min( nBytesToRead, available() );
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aData.realloc( nBytesToRead );
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if( nBytesToRead )
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{
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sal_Int8* pData = static_cast<sal_Int8*>(&(*maData.begin()));
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sal_Int8* pCursor = &((pData)[mnCursor]);
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memcpy( static_cast<void*>(aData.getArray()), static_cast<void*>(pCursor), nBytesToRead );
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mnCursor += nBytesToRead;
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}
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return nBytesToRead;
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}
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sal_Int32 SAL_CALL UNOMemoryStream::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
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{
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return readBytes( aData, nMaxBytesToRead );
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}
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void SAL_CALL UNOMemoryStream::skipBytes( sal_Int32 nBytesToSkip ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
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{
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if( nBytesToSkip < 0 )
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throw IOException();
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mnCursor += std::min( nBytesToSkip, available() );
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}
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sal_Int32 SAL_CALL UNOMemoryStream::available() throw (NotConnectedException, IOException, RuntimeException, std::exception)
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{
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return static_cast< sal_Int32 >( maData.size() ) - mnCursor;
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}
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void SAL_CALL UNOMemoryStream::closeInput() throw (NotConnectedException, IOException, RuntimeException, std::exception)
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{
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mnCursor = 0;
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}
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// XSeekable
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void SAL_CALL UNOMemoryStream::seek( sal_Int64 location ) throw (IllegalArgumentException, IOException, RuntimeException, std::exception)
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{
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if( (location < 0) || (location > SAL_MAX_INT32) )
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throw IllegalArgumentException("this implementation does not support more than 2GB!", static_cast<OWeakObject*>(this), 0 );
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// seek operation should be able to resize the stream
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if ( location > static_cast< sal_Int64 >( maData.size() ) )
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maData.resize( static_cast< sal_Int32 >( location ) );
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if ( location > static_cast< sal_Int64 >( maData.size() ) )
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maData.resize( static_cast< sal_Int32 >( location ) );
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mnCursor = static_cast< sal_Int32 >( location );
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}
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sal_Int64 SAL_CALL UNOMemoryStream::getPosition() throw (IOException, RuntimeException, std::exception)
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{
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return static_cast< sal_Int64 >( mnCursor );
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}
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sal_Int64 SAL_CALL UNOMemoryStream::getLength() throw (IOException, RuntimeException, std::exception)
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{
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return static_cast< sal_Int64 >( maData.size() );
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}
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// XOutputStream
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void SAL_CALL UNOMemoryStream::writeBytes( const Sequence< sal_Int8 >& aData ) throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
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{
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const sal_Int32 nBytesToWrite( aData.getLength() );
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if( nBytesToWrite )
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{
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sal_Int64 nNewSize = static_cast< sal_Int64 >( mnCursor + nBytesToWrite );
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if( nNewSize > SAL_MAX_INT32 )
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{
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OSL_ASSERT(false);
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throw IOException("this implementation does not support more than 2GB!", static_cast<OWeakObject*>(this) );
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}
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if( static_cast< sal_Int32 >( nNewSize ) > static_cast< sal_Int32 >( maData.size() ) )
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maData.resize( static_cast< sal_Int32 >( nNewSize ) );
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sal_Int8* pData = static_cast<sal_Int8*>(&(*maData.begin()));
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sal_Int8* pCursor = &(pData[mnCursor]);
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memcpy( pCursor, aData.getConstArray(), nBytesToWrite );
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mnCursor += nBytesToWrite;
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}
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}
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void SAL_CALL UNOMemoryStream::flush() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
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{
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}
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void SAL_CALL UNOMemoryStream::closeOutput() throw (NotConnectedException, BufferSizeExceededException, IOException, RuntimeException, std::exception)
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{
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mnCursor = 0;
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}
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//XTruncate
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void SAL_CALL UNOMemoryStream::truncate() throw (IOException, RuntimeException, std::exception)
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{
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maData.resize( 0 );
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mnCursor = 0;
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}
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OUString SAL_CALL UNOMemoryStream::getImplementationName_static()
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{
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return OUString("com.sun.star.comp.MemoryStream");
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}
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Sequence< OUString > SAL_CALL UNOMemoryStream::getSupportedServiceNames_static()
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{
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Sequence< OUString > aSeq(1);
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aSeq[0] = getImplementationName_static();
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return aSeq;
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}
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Reference< XInterface > SAL_CALL UNOMemoryStream::Create(
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SAL_UNUSED_PARAMETER const Reference< XComponentContext >& )
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{
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return static_cast<OWeakObject*>(new UNOMemoryStream());
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}
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} // namespace comphelper
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void createRegistryInfo_UNOMemoryStream()
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{
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static ::comphelper::module::OAutoRegistration< ::comphelper::UNOMemoryStream > aAutoRegistration;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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