| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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; |
| } |