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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <rtl/textenc.h>
#include <rtl/tencinfo.h>
#include <com/sun/star/io/IOException.hpp>
#include <com/sun/star/io/XTextOutputStream2.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
namespace com::sun::star::uno { class XComponentContext; }
using namespace ::osl;
using namespace ::cppu;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::io;
// Implementation XTextOutputStream
namespace {
class OTextOutputStream : public WeakImplHelper< XTextOutputStream2, XServiceInfo >
{
Reference< XOutputStream > mxStream;
// Encoding
bool mbEncodingInitialized;
rtl_UnicodeToTextConverter mConvUnicode2Text;
rtl_UnicodeToTextContext mContextUnicode2Text;
Sequence<sal_Int8> implConvert( const OUString& rSource );
/// @throws IOException
void checkOutputStream() const;
public:
OTextOutputStream();
virtual ~OTextOutputStream() override;
// Methods XTextOutputStream
virtual void SAL_CALL writeString( const OUString& aString ) override;
virtual void SAL_CALL setEncoding( const OUString& Encoding ) override;
// Methods XOutputStream
virtual void SAL_CALL writeBytes( const Sequence< sal_Int8 >& aData ) override;
virtual void SAL_CALL flush( ) override;
virtual void SAL_CALL closeOutput( ) override;
// Methods XActiveDataSource
virtual void SAL_CALL setOutputStream( const Reference< XOutputStream >& aStream ) override;
virtual Reference< XOutputStream > SAL_CALL getOutputStream( ) override;
// Methods XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
virtual Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
};
}
OTextOutputStream::OTextOutputStream()
: mbEncodingInitialized(false)
, mConvUnicode2Text(nullptr)
, mContextUnicode2Text(nullptr)
{
}
OTextOutputStream::~OTextOutputStream()
{
if( mbEncodingInitialized )
{
rtl_destroyUnicodeToTextContext( mConvUnicode2Text, mContextUnicode2Text );
rtl_destroyUnicodeToTextConverter( mConvUnicode2Text );
}
}
Sequence<sal_Int8> OTextOutputStream::implConvert( const OUString& rSource )
{
const sal_Unicode *puSource = rSource.getStr();
sal_Int32 nSourceSize = rSource.getLength();
sal_Size nTargetCount = 0;
sal_Size nSourceCount = 0;
sal_uInt32 uiInfo;
sal_Size nSrcCvtChars;
// take nSourceSize * 3 as preference
// this is an upper boundary for converting to utf8,
// which most often used as the target.
sal_Int32 nSeqSize = nSourceSize * 3;
Sequence<sal_Int8> seqText( nSeqSize );
char *pTarget = reinterpret_cast<char *>(seqText.getArray());
while( true )
{
nTargetCount += rtl_convertUnicodeToText(
mConvUnicode2Text,
mContextUnicode2Text,
&( puSource[nSourceCount] ),
nSourceSize - nSourceCount ,
&( pTarget[nTargetCount] ),
nSeqSize - nTargetCount,
RTL_UNICODETOTEXT_FLAGS_UNDEFINED_DEFAULT |
RTL_UNICODETOTEXT_FLAGS_INVALID_DEFAULT ,
&uiInfo,
&nSrcCvtChars);
nSourceCount += nSrcCvtChars;
if( uiInfo & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL )
{
nSeqSize *= 2;
seqText.realloc( nSeqSize ); // double array size
pTarget = reinterpret_cast<char*>(seqText.getArray());
continue;
}
break;
}
// reduce the size of the buffer (fast, no copy necessary)
seqText.realloc( nTargetCount );
return seqText;
}
// XTextOutputStream
void OTextOutputStream::writeString( const OUString& aString )
{
checkOutputStream();
if( !mbEncodingInitialized )
{
setEncoding( "utf8" );
}
if( !mbEncodingInitialized )
return;
Sequence<sal_Int8> aByteSeq = implConvert( aString );
mxStream->writeBytes( aByteSeq );
}
void OTextOutputStream::setEncoding( const OUString& Encoding )
{
OString aOEncodingStr = OUStringToOString( Encoding, RTL_TEXTENCODING_ASCII_US );
rtl_TextEncoding encoding = rtl_getTextEncodingFromMimeCharset( aOEncodingStr.getStr() );
if( RTL_TEXTENCODING_DONTKNOW == encoding )
return;
mbEncodingInitialized = true;
mConvUnicode2Text = rtl_createUnicodeToTextConverter( encoding );
mContextUnicode2Text = rtl_createUnicodeToTextContext( mConvUnicode2Text );
}
// XOutputStream
void OTextOutputStream::writeBytes( const Sequence< sal_Int8 >& aData )
{
checkOutputStream();
mxStream->writeBytes( aData );
}
void OTextOutputStream::flush( )
{
checkOutputStream();
mxStream->flush();
}
void OTextOutputStream::closeOutput( )
{
checkOutputStream();
mxStream->closeOutput();
}
void OTextOutputStream::checkOutputStream() const
{
if (! mxStream.is() )
throw IOException("output stream is not initialized, you have to use setOutputStream first");
}
// XActiveDataSource
void OTextOutputStream::setOutputStream( const Reference< XOutputStream >& aStream )
{
mxStream = aStream;
}
Reference< XOutputStream > OTextOutputStream::getOutputStream()
{
return mxStream;
}
OUString OTextOutputStream::getImplementationName()
{
return "com.sun.star.comp.io.TextOutputStream";
}
sal_Bool OTextOutputStream::supportsService(const OUString& ServiceName)
{
return cppu::supportsService(this, ServiceName);
}
Sequence< OUString > OTextOutputStream::getSupportedServiceNames()
{
return { "com.sun.star.io.TextOutputStream" };
}
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
io_OTextOutputStream_get_implementation(
css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
{
return cppu::acquire(new OTextOutputStream());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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