235 lines
7.3 KiB
C++
235 lines
7.3 KiB
C++
/*************************************************************************
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*
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* $RCSfile: ByteGrabber.cxx,v $
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*
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* $Revision: 1.8 $
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*
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* last change: $Author: mtg $ $Date: 2001-05-28 12:52:33 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): Martin Gallwey (gallwey@sun.com)
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*
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*
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************************************************************************/
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#ifndef _BYTE_GRABBER_HXX_
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#include "ByteGrabber.hxx"
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#endif
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using namespace ::com::sun::star;
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/** ByteGrabber implements the >> operators on an XOutputStream. This is
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* potentially quite slow and may need to be optimised
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*/
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ByteGrabber::ByteGrabber(uno::Reference < io::XInputStream > xIstream)
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: xStream(xIstream)
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, xSeek (xIstream, uno::UNO_QUERY )
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{
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}
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ByteGrabber::~ByteGrabber()
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{
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}
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void ByteGrabber::setInputStream (uno::Reference < io::XInputStream > xNewStream)
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{
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xStream = xNewStream;
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xSeek = uno::Reference < io::XSeekable > (xNewStream, uno::UNO_QUERY);
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}
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// XInputStream chained
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sal_Int32 SAL_CALL ByteGrabber::readBytes( uno::Sequence< sal_Int8 >& aData,
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sal_Int32 nBytesToRead )
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throw(io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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return xStream->readBytes(aData, nBytesToRead );
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}
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sal_Int32 SAL_CALL ByteGrabber::readSomeBytes( uno::Sequence< sal_Int8 >& aData,
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sal_Int32 nMaxBytesToRead )
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throw(io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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return xStream->readSomeBytes( aData, nMaxBytesToRead );
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}
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void SAL_CALL ByteGrabber::skipBytes( sal_Int32 nBytesToSkip )
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throw(io::NotConnectedException, io::BufferSizeExceededException, io::IOException, uno::RuntimeException)
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{
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xStream->skipBytes( nBytesToSkip );
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}
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sal_Int32 SAL_CALL ByteGrabber::available( )
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throw(io::NotConnectedException, io::IOException, uno::RuntimeException)
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{
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return xStream->available();
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}
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void SAL_CALL ByteGrabber::closeInput( )
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throw(io::NotConnectedException, io::IOException, uno::RuntimeException)
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{
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xStream->closeInput();
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}
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// XSeekable chained...
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sal_Int64 SAL_CALL ByteGrabber::seek( sal_Int64 location )
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throw(lang::IllegalArgumentException, io::IOException, uno::RuntimeException)
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{
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if (xSeek.is() )
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{
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sal_Int64 nLen = xSeek->getLength();
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if (location > nLen )
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location = nLen;
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xSeek->seek( location );
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return location;
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}
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else
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throw io::IOException();
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}
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sal_Int64 SAL_CALL ByteGrabber::getPosition( )
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throw(io::IOException, uno::RuntimeException)
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{
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if (xSeek.is() )
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return xSeek->getPosition();
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else
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throw io::IOException();
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}
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sal_Int64 SAL_CALL ByteGrabber::getLength( )
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throw(io::IOException, uno::RuntimeException)
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{
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if (xSeek.is() )
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return xSeek->getLength();
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else
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throw io::IOException();
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}
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ByteGrabber& ByteGrabber::operator >> (sal_Int8& rInt8)
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{
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uno::Sequence< sal_Int8 > aSequence (1);
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if (xStream->readBytes(aSequence,1) != 1)
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{
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rInt8 = 0;
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return *this;
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}
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const sal_Int8 *pArray = aSequence.getArray();
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rInt8 = *(pArray) & 0xFF;
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return *this;
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}
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ByteGrabber& ByteGrabber::operator >> (sal_Int16& rInt16)
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{
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uno::Sequence< sal_Int8 > aSequence (2);
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if (xStream->readBytes(aSequence, 2) != 2)
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{
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rInt16 = 0;
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return *this;
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}
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const sal_Int8 *pArray = aSequence.getArray();
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rInt16 = static_cast <sal_Int16>
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((* pArray & 0xFF)
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| (*(pArray+1)& 0xFF) << 8);
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return *this;
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}
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ByteGrabber& ByteGrabber::operator >> (sal_Int32& rInt32)
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{
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uno::Sequence< sal_Int8 > aSequence (4);
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if (xStream->readBytes(aSequence, 4) != 4)
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{
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rInt32 = 0;
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return *this;
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}
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const sal_Int8 *pArray = aSequence.getArray();
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rInt32 = static_cast < sal_Int32 >
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((* (pArray ) & 0xFF)
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| (* (pArray+1) & 0xFF) << 8
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| (* (pArray+2) & 0xFF) << 16
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| (* (pArray+3) & 0xFF) << 24 );
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return *this;
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}
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ByteGrabber& ByteGrabber::operator >> (sal_uInt8& ruInt8)
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{
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uno::Sequence< sal_Int8 > aSequence (1);
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if (xStream->readBytes(aSequence,1) != 1)
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{
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ruInt8 = 0;
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return *this;
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}
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const sal_Int8 *pArray = aSequence.getArray();
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ruInt8 = static_cast <sal_uInt8> (* (pArray ) & 0xFF);
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return *this;
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}
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ByteGrabber& ByteGrabber::operator >> (sal_uInt16& ruInt16)
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{
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uno::Sequence< sal_Int8 > aSequence (2);
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if (xStream->readBytes(aSequence, 2) != 2)
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{
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ruInt16 = 0;
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return *this;
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}
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const sal_Int8 *pArray = aSequence.getArray();
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ruInt16 = static_cast <sal_uInt16>
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((* pArray & 0xFF)
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| (*(pArray+1)& 0xFF) << 8);
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return *this;
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}
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ByteGrabber& ByteGrabber::operator >> (sal_uInt32& ruInt32)
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{
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uno::Sequence< sal_Int8 > aSequence (4);
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if (xStream->readBytes(aSequence, 4) != 4)
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{
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ruInt32 = 0;
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return *this;
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}
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const sal_Int8 *pArray = aSequence.getArray();
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ruInt32 = static_cast < sal_uInt32 >
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((* (pArray ) & 0xFF)
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| (* (pArray+1) & 0xFF) << 8
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| (* (pArray+2) & 0xFF) << 16
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| (* (pArray+3) & 0xFF) << 24 );
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return *this;
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}
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