36703975a0
Change-Id: I68bb665798edf464020c8c3a6f7d9c9f5e85869e Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167379 Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk> Tested-by: Jenkins
416 lines
12 KiB
C++
416 lines
12 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 <string.h>
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#include <comphelper/sequence.hxx>
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#include <cppuhelper/implbase.hxx>
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#include <cppuhelper/supportsservice.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/BufferSizeExceededException.hpp>
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#include <com/sun/star/io/IOException.hpp>
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#include <com/sun/star/io/NotConnectedException.hpp>
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#include <com/sun/star/io/XTextInputStream2.hpp>
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#include <com/sun/star/lang/XServiceInfo.hpp>
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#include <vector>
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namespace com::sun::star::uno { class XComponentContext; }
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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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// Implementation XTextInputStream
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#define INITIAL_UNICODE_BUFFER_CAPACITY 0x100
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#define READ_BYTE_COUNT 0x100
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namespace {
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class OTextInputStream : public WeakImplHelper< XTextInputStream2, XServiceInfo >
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{
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Reference< XInputStream > mxStream;
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// Encoding
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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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std::vector<sal_Unicode> mvBuffer;
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sal_Int32 mnCharsInBuffer;
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bool mbReachedEOF;
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/// @throws IOException
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/// @throws RuntimeException
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OUString implReadString( const Sequence< sal_Unicode >& Delimiters,
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bool bRemoveDelimiter, bool bFindLineEnd );
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/// @throws IOException
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/// @throws RuntimeException
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sal_Int32 implReadNext();
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/// @throws RuntimeException
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void checkNull();
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public:
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OTextInputStream();
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virtual ~OTextInputStream() override;
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// Methods XTextInputStream
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virtual OUString SAL_CALL readLine( ) override;
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virtual OUString SAL_CALL readString( const Sequence< sal_Unicode >& Delimiters, sal_Bool bRemoveDelimiter ) override;
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virtual sal_Bool SAL_CALL isEOF( ) override;
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virtual void SAL_CALL setEncoding( const OUString& Encoding ) override;
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// Methods XInputStream
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virtual sal_Int32 SAL_CALL readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) override;
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virtual sal_Int32 SAL_CALL readSomeBytes( Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) override;
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virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) override;
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virtual sal_Int32 SAL_CALL available( ) override;
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virtual void SAL_CALL closeInput( ) override;
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// Methods XActiveDataSink
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virtual void SAL_CALL setInputStream( const Reference< XInputStream >& aStream ) override;
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virtual Reference< XInputStream > SAL_CALL getInputStream() override;
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// Methods XServiceInfo
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virtual OUString SAL_CALL getImplementationName() override;
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virtual Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
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virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
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};
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}
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OTextInputStream::OTextInputStream()
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: mbEncodingInitialized(false)
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, mConvText2Unicode(nullptr)
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, mContextText2Unicode(nullptr)
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, mSeqSource(READ_BYTE_COUNT)
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, mvBuffer(INITIAL_UNICODE_BUFFER_CAPACITY, 0)
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, mnCharsInBuffer(0)
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, mbReachedEOF(false)
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{
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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_destroyTextToUnicodeContext( mConvText2Unicode, mContextText2Unicode );
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rtl_destroyTextToUnicodeConverter( mConvText2Unicode );
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}
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}
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// Check uninitialized object
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void OTextInputStream::checkNull()
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{
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if (mxStream==nullptr){
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throw RuntimeException(u"Uninitialized object"_ustr);
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}
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}
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// XTextInputStream
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OUString OTextInputStream::readLine( )
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{
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checkNull();
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static Sequence< sal_Unicode > aDummySeq;
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return implReadString( aDummySeq, true, true );
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}
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OUString OTextInputStream::readString( const Sequence< sal_Unicode >& Delimiters, sal_Bool bRemoveDelimiter )
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{
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checkNull();
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return implReadString( Delimiters, bRemoveDelimiter, false );
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}
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sal_Bool OTextInputStream::isEOF()
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{
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checkNull();
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bool bRet = false;
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if( mnCharsInBuffer == 0 && mbReachedEOF )
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bRet = 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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bool bRemoveDelimiter, bool bFindLineEnd )
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{
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OUString aRetStr;
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if( !mbEncodingInitialized )
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{
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setEncoding( u"utf8"_ustr );
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}
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if( !mbEncodingInitialized )
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return aRetStr;
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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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bool bFound = false;
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bool bFoundFirstLineEndChar = false;
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sal_Unicode cFirstLineEndChar = 0;
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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 broken before)
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sal_Unicode c = mvBuffer[ 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 = 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 = true;
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cFirstLineEndChar = c;
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}
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}
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else if( comphelper::findValue(Delimiters, c) != -1 )
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{
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bFound = 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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// 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( mvBuffer.data(), nCopyLen );
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// Copy rest of buffer
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memmove( mvBuffer.data(), mvBuffer.data() + 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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{
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sal_Int32 nFreeBufferSize = mvBuffer.size() - mnCharsInBuffer;
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if( nFreeBufferSize < READ_BYTE_COUNT )
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mvBuffer.resize(mvBuffer.size() * 2);
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nFreeBufferSize = mvBuffer.size() - mnCharsInBuffer;
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try
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{
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sal_Int32 nRead = mxStream->readSomeBytes( mSeqSource, READ_BYTE_COUNT );
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sal_Int32 nTotalRead = nRead;
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if( nRead == 0 )
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mbReachedEOF = 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( 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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reinterpret_cast<const char*>(&( pbSource[nSourceCount] )),
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nTotalRead - nSourceCount,
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mvBuffer.data() + 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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bool bCont = false;
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if( uiInfo & RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL )
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{
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mvBuffer.resize(mvBuffer.size() * 2);
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bCont = true;
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}
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if( uiInfo & RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL )
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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 = 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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bCont = 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(u"Not connected"_ustr);
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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(u"Buffer size exceeded"_ustr);
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}
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}
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void OTextInputStream::setEncoding( const OUString& Encoding )
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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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}
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// XInputStream
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sal_Int32 OTextInputStream::readBytes( Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead )
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{
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checkNull();
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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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{
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checkNull();
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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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{
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checkNull();
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mxStream->skipBytes( nBytesToSkip );
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}
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sal_Int32 OTextInputStream::available( )
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{
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checkNull();
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return mxStream->available();
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}
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void OTextInputStream::closeInput( )
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{
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checkNull();
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mxStream->closeInput();
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}
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// XActiveDataSink
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void OTextInputStream::setInputStream( const Reference< XInputStream >& aStream )
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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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{
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return mxStream;
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}
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OUString OTextInputStream::getImplementationName()
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{
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return u"com.sun.star.comp.io.TextInputStream"_ustr;
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}
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sal_Bool OTextInputStream::supportsService(const OUString& ServiceName)
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{
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return cppu::supportsService(this, ServiceName);
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}
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Sequence< OUString > OTextInputStream::getSupportedServiceNames()
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{
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return { u"com.sun.star.io.TextInputStream"_ustr };
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}
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extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
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io_OTextInputStream_get_implementation(
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css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
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{
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return cppu::acquire(new OTextInputStream());
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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