diff options
Diffstat (limited to 'xmlhelp/source/cxxhelp/provider/bufferedinputstream.cxx')
| -rw-r--r-- | xmlhelp/source/cxxhelp/provider/bufferedinputstream.cxx | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/xmlhelp/source/cxxhelp/provider/bufferedinputstream.cxx b/xmlhelp/source/cxxhelp/provider/bufferedinputstream.cxx new file mode 100644 index 000000000000..dd96b7a2a58c --- /dev/null +++ b/xmlhelp/source/cxxhelp/provider/bufferedinputstream.cxx @@ -0,0 +1,236 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * 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_xmlhelp.hxx" +#include <rtl/memory.h> +#include "bufferedinputstream.hxx" + + +using namespace cppu; +using namespace com::sun::star::uno; +using namespace com::sun::star::lang; +using namespace com::sun::star::io; +using namespace chelp; + + +Reference<XInputStream> chelp::turnToSeekable(const Reference<XInputStream>& xInputStream) +{ + if( ! xInputStream.is() ) + return xInputStream; + + Reference<XSeekable> xSeekable(xInputStream,UNO_QUERY); + + if( xSeekable.is() ) + return xInputStream; + + return new BufferedInputStream(xInputStream); +} + + + +BufferedInputStream::BufferedInputStream(const Reference<XInputStream>& xInputStream) + : m_nBufferLocation(0), + m_nBufferSize(0), + m_pBuffer(new sal_Int8[1]) // Initialize with one to avoid gcc compiler warnings +{ + try + { + sal_Int32 num; + sal_Int8 *tmp; + Sequence< sal_Int8 > aData(4096); + do{ + num = xInputStream->readBytes(aData,4096); + if( num > 0 ) + { + tmp = m_pBuffer; + m_pBuffer = new sal_Int8[m_nBufferSize+num]; + rtl_copyMemory((void *)(m_pBuffer), + (void *)(tmp), + sal_uInt32(m_nBufferSize)); + rtl_copyMemory((void *)(m_pBuffer+m_nBufferSize), + (void *)(aData.getArray()), + sal_uInt32(num)); + m_nBufferSize += num; + delete[] tmp; + } + } while( num == 4096 ); + } + catch( const NotConnectedException&) + { + } + catch( const BufferSizeExceededException&) + { + } + catch( const IOException&) + { + } + catch( const RuntimeException&) + { + } + xInputStream->closeInput(); +} + + +BufferedInputStream::~BufferedInputStream() +{ + delete[] m_pBuffer; +} + + +Any SAL_CALL BufferedInputStream::queryInterface( const Type& rType ) throw( RuntimeException ) +{ + Any aRet = ::cppu::queryInterface( rType, + SAL_STATIC_CAST( XInputStream*,this ), + SAL_STATIC_CAST( XSeekable*,this ) ); + + return aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType ); +} + + +void SAL_CALL BufferedInputStream::acquire( void ) throw() +{ + OWeakObject::acquire(); +} + + +void SAL_CALL BufferedInputStream::release( void ) throw() +{ + OWeakObject::release(); +} + + + +sal_Int32 SAL_CALL BufferedInputStream::readBytes( Sequence< sal_Int8 >& aData,sal_Int32 nBytesToRead ) + throw( NotConnectedException, + BufferSizeExceededException, + IOException, + RuntimeException) +{ + osl::MutexGuard aGuard( m_aMutex ); + + if( 0 > nBytesToRead ) + throw BufferSizeExceededException(); + + if( m_nBufferLocation + nBytesToRead > m_nBufferSize ) + nBytesToRead = m_nBufferSize - m_nBufferLocation; + + if( aData.getLength() < nBytesToRead ) + aData.realloc(nBytesToRead); + + rtl_copyMemory((void*)(aData.getArray()), + (void*)(m_pBuffer+m_nBufferLocation), + nBytesToRead); + + return nBytesToRead; +} + + +sal_Int32 SAL_CALL BufferedInputStream::readSomeBytes( + Sequence< sal_Int8 >& aData,sal_Int32 nMaxBytesToRead ) + throw( NotConnectedException, + BufferSizeExceededException, + IOException, + RuntimeException) +{ + return readBytes(aData,nMaxBytesToRead); +} + + + +void SAL_CALL BufferedInputStream::skipBytes( sal_Int32 nBytesToSkip ) + throw( NotConnectedException, + BufferSizeExceededException, + IOException, + RuntimeException ) +{ + try + { + seek(m_nBufferLocation+nBytesToSkip); + } + catch( const IllegalArgumentException& ) + { + throw BufferSizeExceededException(); + } +} + + + +sal_Int32 SAL_CALL BufferedInputStream::available( void ) + throw( NotConnectedException, + IOException, + RuntimeException ) +{ + osl::MutexGuard aGuard( m_aMutex ); + return m_nBufferSize-m_nBufferLocation; +} + + + +void SAL_CALL BufferedInputStream::closeInput( void ) + throw( NotConnectedException, + IOException, + RuntimeException ) +{ +} + + +void SAL_CALL BufferedInputStream::seek( sal_Int64 location ) + throw( IllegalArgumentException, + IOException, + RuntimeException ) +{ + if( 0 <= location && location < m_nBufferSize ) + { + osl::MutexGuard aGuard( m_aMutex ); + m_nBufferLocation = sal::static_int_cast<sal_Int32>( location ); + } + else + throw IllegalArgumentException(); +} + + + +sal_Int64 SAL_CALL BufferedInputStream::getPosition( void ) + throw( IOException, + RuntimeException ) +{ + osl::MutexGuard aGuard( m_aMutex ); + return m_nBufferLocation; +} + + + +sal_Int64 SAL_CALL BufferedInputStream::getLength( void ) throw( IOException,RuntimeException ) +{ + osl::MutexGuard aGuard( m_aMutex ); + return m_nBufferSize; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |