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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 <oox/core/contexthandler2.hxx>
#include <oox/helper/attributelist.hxx>
#include <oox/token/namespaces.hxx>
#include <oox/token/tokens.hxx>
#include <rtl/ustrbuf.hxx>
#include <o3tl/safeint.hxx>
#include <osl/diagnose.h>
namespace oox::core {
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::xml::sax;
/** Information about a processed element. */
struct ElementInfo
{
OUStringBuffer maChars; /// Collected element characters.
sal_Int32 mnElement; /// The element identifier.
bool mbTrimSpaces; /// True = trims leading/trailing spaces from text data.
explicit ElementInfo() : maChars( 0), mnElement( XML_TOKEN_INVALID ), mbTrimSpaces( false ) {}
};
ContextHandler2Helper::ContextHandler2Helper( bool bEnableTrimSpace ) :
mxContextStack( std::make_shared<ContextStack>() ),
mnRootStackSize( 0 ),
mbEnableTrimSpace( bEnableTrimSpace )
{
pushElementInfo( XML_ROOT_CONTEXT );
}
ContextHandler2Helper::ContextHandler2Helper( const ContextHandler2Helper& rParent ) :
mxContextStack( rParent.mxContextStack ),
mnRootStackSize( rParent.mxContextStack->size() ),
mbEnableTrimSpace( rParent.mbEnableTrimSpace )
{
}
ContextHandler2Helper::~ContextHandler2Helper()
{
}
sal_Int32 ContextHandler2Helper::getCurrentElementWithMce() const
{
return mxContextStack->empty() ? XML_ROOT_CONTEXT : mxContextStack->back().mnElement;
}
sal_Int32 ContextHandler2Helper::getCurrentElement() const
{
auto It = std::find_if(mxContextStack->rbegin(), mxContextStack->rend(),
[](const ElementInfo& rItem) { return getNamespace(rItem.mnElement) != NMSP_mce; });
if (It != mxContextStack->rend())
return It->mnElement;
return XML_ROOT_CONTEXT;
}
sal_Int32 ContextHandler2Helper::getParentElement( sal_Int32 nCountBack ) const
{
if( (nCountBack < 0) || (mxContextStack->size() < o3tl::make_unsigned( nCountBack )) )
return XML_TOKEN_INVALID;
return (mxContextStack->size() == static_cast< size_t >( nCountBack )) ?
XML_ROOT_CONTEXT : (*mxContextStack)[ mxContextStack->size() - nCountBack - 1 ].mnElement;
}
bool ContextHandler2Helper::isRootElement() const
{
return mxContextStack->size() == mnRootStackSize + 1;
}
Reference< XFastContextHandler > ContextHandler2Helper::implCreateChildContext(
sal_Int32 nElement, const Reference< XFastAttributeList >& rxAttribs )
{
// #i76091# process collected characters (calls onCharacters() if needed)
processCollectedChars();
ContextHandlerRef xContext = onCreateContext( nElement, AttributeList( rxAttribs ) );
return Reference< XFastContextHandler >( xContext.get() );
}
void ContextHandler2Helper::implStartElement( sal_Int32 nElement, const Reference< XFastAttributeList >& rxAttribs )
{
AttributeList aAttribs( rxAttribs );
pushElementInfo( nElement ).mbTrimSpaces = aAttribs.getToken( XML_TOKEN( space ), XML_TOKEN_INVALID ) != XML_preserve;
onStartElement( aAttribs );
}
void ContextHandler2Helper::implCharacters( const OUString& rChars )
{
// #i76091# collect characters until new element starts or this element ends
if( !mxContextStack->empty() )
mxContextStack->back().maChars.append(rChars);
}
void ContextHandler2Helper::implEndElement( sal_Int32 nElement )
{
OSL_ENSURE( getCurrentElementWithMce() == nElement, "ContextHandler2Helper::implEndElement - context stack broken" );
if( !mxContextStack->empty() )
{
// #i76091# process collected characters (calls onCharacters() if needed)
processCollectedChars();
onEndElement();
popElementInfo();
}
}
ContextHandlerRef ContextHandler2Helper::implCreateRecordContext( sal_Int32 nRecId, SequenceInputStream& rStrm )
{
return onCreateRecordContext( nRecId, rStrm );
}
void ContextHandler2Helper::implStartRecord( sal_Int32 nRecId, SequenceInputStream& rStrm )
{
pushElementInfo( nRecId );
onStartRecord( rStrm );
}
void ContextHandler2Helper::implEndRecord( sal_Int32 nRecId )
{
OSL_ENSURE( getCurrentElementWithMce() == nRecId, "ContextHandler2Helper::implEndRecord - context stack broken" );
if( !mxContextStack->empty() )
{
onEndRecord();
popElementInfo();
}
}
ElementInfo& ContextHandler2Helper::pushElementInfo( sal_Int32 nElement )
{
mxContextStack->emplace_back();
ElementInfo& rInfo = mxContextStack->back();
rInfo.mnElement = nElement;
return rInfo;
}
void ContextHandler2Helper::popElementInfo()
{
OSL_ENSURE( !mxContextStack->empty(), "ContextHandler2Helper::popElementInfo - context stack broken" );
if( !mxContextStack->empty() )
mxContextStack->pop_back();
}
void ContextHandler2Helper::processCollectedChars()
{
OSL_ENSURE( !mxContextStack->empty(), "ContextHandler2Helper::processCollectedChars - no context info" );
if (mxContextStack->empty())
return;
ElementInfo& rInfo = mxContextStack->back();
if( !rInfo.maChars.isEmpty() )
{
OUString aChars = rInfo.maChars.makeStringAndClear();
if( mbEnableTrimSpace && rInfo.mbTrimSpaces )
aChars = aChars.trim();
if( !aChars.isEmpty() )
onCharacters( aChars );
}
}
ContextHandler2::ContextHandler2( ContextHandler2Helper const & rParent ) :
ContextHandler( dynamic_cast< ContextHandler const & >( rParent ) ),
ContextHandler2Helper( rParent )
{
}
ContextHandler2::~ContextHandler2()
{
}
// com.sun.star.xml.sax.XFastContextHandler interface -------------------------
Reference< XFastContextHandler > SAL_CALL ContextHandler2::createFastChildContext(
sal_Int32 nElement, const Reference< XFastAttributeList >& rxAttribs )
{
return implCreateChildContext( nElement, rxAttribs );
}
void SAL_CALL ContextHandler2::startFastElement(
sal_Int32 nElement, const Reference< XFastAttributeList >& rxAttribs )
{
implStartElement( nElement, rxAttribs );
}
void SAL_CALL ContextHandler2::characters( const OUString& rChars )
{
implCharacters( rChars );
}
void SAL_CALL ContextHandler2::endFastElement( sal_Int32 nElement )
{
implEndElement( nElement );
}
// oox.core.RecordContext interface -------------------------------------------
ContextHandlerRef ContextHandler2::createRecordContext( sal_Int32 nRecId, SequenceInputStream& rStrm )
{
return implCreateRecordContext( nRecId, rStrm );
}
void ContextHandler2::startRecord( sal_Int32 nRecId, SequenceInputStream& rStrm )
{
implStartRecord( nRecId, rStrm );
}
void ContextHandler2::endRecord( sal_Int32 nRecId )
{
implEndRecord( nRecId );
}
// oox.core.ContextHandler2Helper interface -----------------------------------
ContextHandlerRef ContextHandler2::onCreateContext( sal_Int32, const AttributeList& )
{
return nullptr;
}
void ContextHandler2::onStartElement( const AttributeList& )
{
}
void ContextHandler2::onCharacters( const OUString& )
{
}
void ContextHandler2::onEndElement()
{
}
ContextHandlerRef ContextHandler2::onCreateRecordContext( sal_Int32, SequenceInputStream& )
{
return nullptr;
}
void ContextHandler2::onStartRecord( SequenceInputStream& )
{
}
void ContextHandler2::onEndRecord()
{
}
} // namespace oox
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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