545 lines
17 KiB
C++
545 lines
17 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: TextInputStream.cxx,v $
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*
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* $Revision: 1.14 $
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*
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* last change: $Author: obo $ $Date: 2006-09-16 23:41:41 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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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 2005 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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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_io.hxx"
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#include <string.h>
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#include <osl/mutex.hxx>
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#include <osl/diagnose.h>
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#include <rtl/unload.h>
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#include <uno/mapping.hxx>
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#include <cppuhelper/factory.hxx>
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#include <cppuhelper/implbase3.hxx>
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#include <cppuhelper/implementationentry.hxx>
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#include <rtl/textenc.h>
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#include <rtl/tencinfo.h>
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#include <com/sun/star/io/XTextInputStream.hpp>
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#include <com/sun/star/io/XActiveDataSink.hpp>
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#include <com/sun/star/lang/XServiceInfo.hpp>
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#define IMPLEMENTATION_NAME "com.sun.star.comp.io.TextInputStream"
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#define SERVICE_NAME "com.sun.star.io.TextInputStream"
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using namespace ::osl;
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using namespace ::rtl;
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using namespace ::cppu;
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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 ::com::sun::star::io;
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using namespace ::com::sun::star::registry;
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namespace io_TextInputStream
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{
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rtl_StandardModuleCount g_moduleCount = MODULE_COUNT_INIT;
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//===========================================================================
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// Implementation XTextInputStream
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typedef WeakImplHelper3< XTextInputStream, XActiveDataSink, XServiceInfo > TextInputStreamHelper;
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class OCommandEnvironment;
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#define INITIAL_UNICODE_BUFFER_CAPACITY 0x100
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#define READ_BYTE_COUNT 0x100
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class OTextInputStream : public TextInputStreamHelper
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{
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Reference< XInputStream > mxStream;
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// Encoding
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OUString mEncoding;
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sal_Bool mbEncodingInitialized;
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rtl_TextToUnicodeConverter mConvText2Unicode;
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rtl_TextToUnicodeContext mContextText2Unicode;
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Sequence<sal_Int8> mSeqSource;
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// Internal buffer for characters that are already converted successfully
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sal_Unicode* mpBuffer;
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sal_Int32 mnBufferSize;
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sal_Int32 mnCharsInBuffer;
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sal_Bool mbReachedEOF;
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void implResizeBuffer( void );
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OUString implReadString( const Sequence< sal_Unicode >& Delimiters,
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sal_Bool bRemoveDelimiter, sal_Bool bFindLineEnd )
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throw(IOException, RuntimeException);
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sal_Int32 implReadNext() throw(IOException, RuntimeException);
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public:
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OTextInputStream();
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virtual ~OTextInputStream();
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// Methods XTextInputStream
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virtual OUString SAL_CALL readLine( )
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throw(IOException, RuntimeException);
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virtual OUString SAL_CALL readString( const Sequence< sal_Unicode >& Delimiters, sal_Bool bRemoveDelimiter )
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throw(IOException, RuntimeException);
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virtual sal_Bool SAL_CALL isEOF( )
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throw(IOException, RuntimeException);
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virtual void SAL_CALL setEncoding( const OUString& Encoding ) throw(RuntimeException);
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// Methods XInputStream
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virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
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throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException);
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virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
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throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException);
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virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip )
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throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException);
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virtual sal_Int32 SAL_CALL available( )
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throw(NotConnectedException, IOException, RuntimeException);
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virtual void SAL_CALL closeInput( )
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throw(NotConnectedException, IOException, RuntimeException);
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// Methods XActiveDataSink
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virtual void SAL_CALL setInputStream( const Reference< XInputStream >& aStream )
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throw(RuntimeException);
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virtual Reference< XInputStream > SAL_CALL getInputStream()
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throw(RuntimeException);
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// Methods XServiceInfo
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virtual OUString SAL_CALL getImplementationName() throw();
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virtual Sequence< OUString > SAL_CALL getSupportedServiceNames(void) throw();
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virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) throw();
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};
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OTextInputStream::OTextInputStream()
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: mSeqSource( READ_BYTE_COUNT ), mpBuffer( NULL ), mnBufferSize( 0 )
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, mnCharsInBuffer( 0 ), mbReachedEOF( sal_False )
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{
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g_moduleCount.modCnt.acquire( &g_moduleCount.modCnt );
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mbEncodingInitialized = false;
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}
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OTextInputStream::~OTextInputStream()
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{
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if( mbEncodingInitialized )
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{
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rtl_destroyUnicodeToTextContext( mConvText2Unicode, mContextText2Unicode );
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rtl_destroyUnicodeToTextConverter( mConvText2Unicode );
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}
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g_moduleCount.modCnt.release( &g_moduleCount.modCnt );
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}
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void OTextInputStream::implResizeBuffer( void )
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{
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sal_Int32 mnNewBufferSize = mnBufferSize * 2;
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sal_Unicode* pNewBuffer = new sal_Unicode[ mnNewBufferSize ];
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memcpy( pNewBuffer, mpBuffer, mnCharsInBuffer * sizeof( sal_Unicode ) );
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mpBuffer = pNewBuffer;
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mnBufferSize = mnNewBufferSize;
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}
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//===========================================================================
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// XTextInputStream
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OUString OTextInputStream::readLine( )
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throw(IOException, RuntimeException)
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{
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static Sequence< sal_Unicode > aDummySeq;
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return implReadString( aDummySeq, sal_True, sal_True );
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}
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OUString OTextInputStream::readString( const Sequence< sal_Unicode >& Delimiters, sal_Bool )
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throw(IOException, RuntimeException)
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{
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return implReadString( Delimiters, sal_True, sal_False );
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}
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sal_Bool OTextInputStream::isEOF()
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throw(IOException, RuntimeException)
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{
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sal_Bool bRet = sal_False;
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if( mnCharsInBuffer == 0 && mbReachedEOF )
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bRet = sal_True;
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return bRet;
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}
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OUString OTextInputStream::implReadString( const Sequence< sal_Unicode >& Delimiters,
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sal_Bool bRemoveDelimiter, sal_Bool bFindLineEnd )
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throw(IOException, RuntimeException)
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{
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OUString aRetStr;
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if( !mbEncodingInitialized )
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{
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OUString aUtf8Str( RTL_CONSTASCII_USTRINGPARAM("utf8") );
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setEncoding( aUtf8Str );
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}
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if( !mbEncodingInitialized )
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return aRetStr;
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if( !mpBuffer )
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{
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mnBufferSize = INITIAL_UNICODE_BUFFER_CAPACITY;
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mpBuffer = new sal_Unicode[ mnBufferSize ];
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}
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// Only for bFindLineEnd
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sal_Unicode cLineEndChar1 = 0x0D;
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sal_Unicode cLineEndChar2 = 0x0A;
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sal_Int32 nBufferReadPos = 0;
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sal_Int32 nCopyLen = 0;
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sal_Bool bFound = sal_False;
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sal_Bool bFoundFirstLineEndChar = sal_False;
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sal_Unicode cFirstLineEndChar = 0;
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const sal_Unicode* pDelims = Delimiters.getConstArray();
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const sal_Int32 nDelimCount = Delimiters.getLength();
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while( !bFound )
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{
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// Still characters available?
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if( nBufferReadPos == mnCharsInBuffer )
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{
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// Already reached EOF? Then we can't read any more
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if( mbReachedEOF )
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break;
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// No, so read new characters
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if( !implReadNext() )
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break;
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}
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// Now there should be characters available
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// (otherwise the loop should have been breaked before)
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sal_Unicode c = mpBuffer[ nBufferReadPos++ ];
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if( bFindLineEnd )
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{
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if( bFoundFirstLineEndChar )
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{
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bFound = sal_True;
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nCopyLen = nBufferReadPos - 2;
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if( c == cLineEndChar1 || c == cLineEndChar2 )
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{
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// Same line end char -> new line break
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if( c == cFirstLineEndChar )
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{
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nBufferReadPos--;
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}
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}
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else
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{
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// No second line end char
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nBufferReadPos--;
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}
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}
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else if( c == cLineEndChar1 || c == cLineEndChar2 )
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{
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bFoundFirstLineEndChar = sal_True;
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cFirstLineEndChar = c;
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}
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}
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else
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{
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for( sal_Int32 i = 0 ; i < nDelimCount ; i++ )
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{
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if( c == pDelims[ i ] )
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{
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bFound = sal_True;
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nCopyLen = nBufferReadPos;
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if( bRemoveDelimiter )
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nCopyLen--;
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}
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}
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}
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}
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// Nothing found? Return all
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if( !nCopyLen && !bFound && mbReachedEOF )
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nCopyLen = nBufferReadPos;
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// Create string
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if( nCopyLen )
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aRetStr = OUString( mpBuffer, nCopyLen );
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// Copy rest of buffer
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memmove( mpBuffer, mpBuffer + nBufferReadPos,
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(mnCharsInBuffer - nBufferReadPos) * sizeof( sal_Unicode ) );
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mnCharsInBuffer -= nBufferReadPos;
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return aRetStr;
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}
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sal_Int32 OTextInputStream::implReadNext()
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throw(IOException, RuntimeException)
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{
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sal_Int32 nFreeBufferSize = mnBufferSize - mnCharsInBuffer;
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if( nFreeBufferSize < READ_BYTE_COUNT )
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implResizeBuffer();
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nFreeBufferSize = mnBufferSize - mnCharsInBuffer;
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try
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{
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sal_Int32 nBytesToRead = READ_BYTE_COUNT;
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sal_Int32 nRead = mxStream->readSomeBytes( mSeqSource, nBytesToRead );
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sal_Int32 nTotalRead = nRead;
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if( nRead < nBytesToRead )
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mbReachedEOF = sal_True;
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// Try to convert
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sal_uInt32 uiInfo;
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sal_Size nSrcCvtBytes = 0;
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sal_Size nTargetCount = 0;
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sal_Size nSourceCount = 0;
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while( sal_True )
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{
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const sal_Int8 *pbSource = mSeqSource.getConstArray();
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// All invalid characters are transformed to the unicode undefined char
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nTargetCount += rtl_convertTextToUnicode(
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mConvText2Unicode,
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mContextText2Unicode,
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(const sal_Char*) &( pbSource[nSourceCount] ),
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nTotalRead - nSourceCount,
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mpBuffer + mnCharsInBuffer + nTargetCount,
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nFreeBufferSize - nTargetCount,
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RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT |
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RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT |
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RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT,
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&uiInfo,
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&nSrcCvtBytes );
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nSourceCount += nSrcCvtBytes;
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sal_Bool bCont = sal_False;
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if( uiInfo & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL )
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{
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implResizeBuffer();
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bCont = sal_True;
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}
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if( uiInfo & RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOSMALL )
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{
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// read next byte
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static Sequence< sal_Int8 > aOneByteSeq( 1 );
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nRead = mxStream->readSomeBytes( aOneByteSeq, 1 );
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if( nRead == 0 )
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{
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mbReachedEOF = sal_True;
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break;
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}
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sal_Int32 nOldLen = mSeqSource.getLength();
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nTotalRead++;
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if( nTotalRead > nOldLen )
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{
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mSeqSource.realloc( nTotalRead );
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}
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mSeqSource.getArray()[ nOldLen ] = aOneByteSeq.getConstArray()[ 0 ];
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pbSource = mSeqSource.getConstArray();
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bCont = sal_True;
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}
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if( bCont )
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continue;
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break;
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}
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mnCharsInBuffer += nTargetCount;
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return nTargetCount;
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}
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catch( NotConnectedException& )
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{
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throw IOException();
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//throw IOException( L"OTextInputStream::implReadString failed" );
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}
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catch( BufferSizeExceededException& )
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{
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throw IOException();
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}
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}
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void OTextInputStream::setEncoding( const OUString& Encoding )
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throw(RuntimeException)
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{
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OString aOEncodingStr = OUStringToOString( Encoding, RTL_TEXTENCODING_ASCII_US );
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rtl_TextEncoding encoding = rtl_getTextEncodingFromMimeCharset( aOEncodingStr.getStr() );
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if( RTL_TEXTENCODING_DONTKNOW == encoding )
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return;
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mbEncodingInitialized = true;
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mConvText2Unicode = rtl_createTextToUnicodeConverter( encoding );
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mContextText2Unicode = rtl_createTextToUnicodeContext( mConvText2Unicode );
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mEncoding = Encoding;
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}
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//===========================================================================
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// XInputStream
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sal_Int32 OTextInputStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
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throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
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{
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return mxStream->readBytes( aData, nBytesToRead );
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}
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sal_Int32 OTextInputStream::readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead )
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throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
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{
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return mxStream->readSomeBytes( aData, nMaxBytesToRead );
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}
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void OTextInputStream::skipBytes( sal_Int32 nBytesToSkip )
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throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
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{
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mxStream->skipBytes( nBytesToSkip );
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}
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sal_Int32 OTextInputStream::available( )
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throw(NotConnectedException, IOException, RuntimeException)
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{
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return mxStream->available();
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}
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void OTextInputStream::closeInput( )
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throw(NotConnectedException, IOException, RuntimeException)
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{
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mxStream->closeInput();
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}
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//===========================================================================
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// XActiveDataSink
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void OTextInputStream::setInputStream( const Reference< XInputStream >& aStream )
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throw(RuntimeException)
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{
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mxStream = aStream;
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}
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Reference< XInputStream > OTextInputStream::getInputStream()
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throw(RuntimeException)
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{
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return mxStream;
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}
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Reference< XInterface > SAL_CALL TextInputStream_CreateInstance( const Reference< XComponentContext > &)
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{
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return Reference < XInterface >( ( OWeakObject * ) new OTextInputStream() );
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}
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OUString TextInputStream_getImplementationName()
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{
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return OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) );
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}
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Sequence< OUString > TextInputStream_getSupportedServiceNames()
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{
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static Sequence < OUString > *pNames = 0;
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if( ! pNames )
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{
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MutexGuard guard( Mutex::getGlobalMutex() );
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if( !pNames )
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{
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static Sequence< OUString > seqNames(1);
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seqNames.getArray()[0] = OUString( RTL_CONSTASCII_USTRINGPARAM( SERVICE_NAME ) );
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pNames = &seqNames;
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}
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}
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return *pNames;
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}
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OUString OTextInputStream::getImplementationName() throw()
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{
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return TextInputStream_getImplementationName();
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}
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sal_Bool OTextInputStream::supportsService(const OUString& ServiceName) throw()
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{
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Sequence< OUString > aSNL = getSupportedServiceNames();
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const OUString * pArray = aSNL.getConstArray();
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for( sal_Int32 i = 0; i < aSNL.getLength(); i++ )
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if( pArray[i] == ServiceName )
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return sal_True;
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return sal_False;
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}
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Sequence< OUString > OTextInputStream::getSupportedServiceNames(void) throw()
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{
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return TextInputStream_getSupportedServiceNames();
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}
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}
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using namespace io_TextInputStream;
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static struct ImplementationEntry g_entries[] =
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{
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{
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TextInputStream_CreateInstance, TextInputStream_getImplementationName ,
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TextInputStream_getSupportedServiceNames, createSingleComponentFactory ,
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&g_moduleCount.modCnt , 0
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},
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{ 0, 0, 0, 0, 0, 0 }
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};
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extern "C"
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{
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sal_Bool SAL_CALL component_canUnload( TimeValue *pTime )
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{
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return g_moduleCount.canUnload( &g_moduleCount , pTime );
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}
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//==================================================================================================
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void SAL_CALL component_getImplementationEnvironment(
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const sal_Char ** ppEnvTypeName, uno_Environment ** )
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{
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*ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
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}
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//==================================================================================================
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sal_Bool SAL_CALL component_writeInfo(
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void * pServiceManager, void * pRegistryKey )
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{
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return component_writeInfoHelper( pServiceManager, pRegistryKey, g_entries );
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}
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|
//==================================================================================================
|
|
void * SAL_CALL component_getFactory(
|
|
const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey )
|
|
{
|
|
return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
|
|
}
|
|
}
|
|
|
|
|