diff options
Diffstat (limited to 'sax/source/expatwrap/sax_expat.cxx')
| -rw-r--r-- | sax/source/expatwrap/sax_expat.cxx | 961 |
1 files changed, 961 insertions, 0 deletions
diff --git a/sax/source/expatwrap/sax_expat.cxx b/sax/source/expatwrap/sax_expat.cxx new file mode 100644 index 000000000..78b7e2252 --- /dev/null +++ b/sax/source/expatwrap/sax_expat.cxx @@ -0,0 +1,961 @@ +/* -*- 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 <string.h> +#include <cassert> +#include <memory> +#include <mutex> +#include <utility> +#include <string_view> +#include <vector> + + +#include <com/sun/star/lang/XServiceInfo.hpp> +#include <com/sun/star/lang/XInitialization.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp> +#include <com/sun/star/xml/sax/XParser.hpp> +#include <com/sun/star/xml/sax/SAXParseException.hpp> +#include <com/sun/star/io/IOException.hpp> +#include <com/sun/star/io/XSeekable.hpp> +#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp> + +#include <comphelper/attributelist.hxx> +#include <cppuhelper/weak.hxx> +#include <cppuhelper/implbase.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <rtl/ref.hxx> +#include <sal/log.hxx> + +#include <expat.h> + +using namespace ::std; +using namespace ::osl; +using namespace ::cppu; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::xml::sax; +using namespace ::com::sun::star::io; + +#include <xml2utf.hxx> + +namespace { + +#define XML_CHAR_TO_OUSTRING(x) OUString(x , strlen( x ), RTL_TEXTENCODING_UTF8) +#define XML_CHAR_N_TO_USTRING(x,n) OUString(x,n, RTL_TEXTENCODING_UTF8 ) + + +/* +* The following macro encapsulates any call to an event handler. +* It ensures, that exceptions thrown by the event handler are +* treated properly. +*/ +#define CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS(pThis,call) \ + if( ! pThis->bExceptionWasThrown ) { \ + try {\ + pThis->call;\ + }\ + catch( const SAXParseException &e ) {\ + callErrorHandler( pThis , e );\ + }\ + catch( const SAXException &e ) {\ + callErrorHandler( pThis , SAXParseException(\ + e.Message, \ + e.Context, \ + e.WrappedException,\ + pThis->rDocumentLocator->getPublicId(),\ + pThis->rDocumentLocator->getSystemId(),\ + pThis->rDocumentLocator->getLineNumber(),\ + pThis->rDocumentLocator->getColumnNumber()\ + ) );\ + }\ + catch( const css::uno::RuntimeException &e ) {\ + pThis->bExceptionWasThrown = true; \ + pThis->bRTExceptionWasThrown = true; \ + pImpl->rtexception = e; \ + }\ + catch( const css::uno::Exception &e ) {\ + pThis->bExceptionWasThrown = true; \ + pThis->bRTExceptionWasThrown = true; \ + pImpl->rtexception = WrappedTargetRuntimeException("Non-runtime UNO exception caught during parse", e.Context, css::uno::Any(e)); \ + }\ + }\ + ((void)0) + + +class SaxExpatParser_Impl; + +// This class implements the external Parser interface +class SaxExpatParser + : public WeakImplHelper< XInitialization + , XServiceInfo + , XParser > +{ + +public: + SaxExpatParser(); + + // css::lang::XInitialization: + virtual void SAL_CALL initialize(css::uno::Sequence<css::uno::Any> const& rArguments) override; + + // The SAX-Parser-Interface + virtual void SAL_CALL parseStream( const InputSource& structSource) override; + virtual void SAL_CALL setDocumentHandler(const css::uno::Reference< XDocumentHandler > & xHandler) override; + + virtual void SAL_CALL setErrorHandler(const css::uno::Reference< XErrorHandler > & xHandler) override; + virtual void SAL_CALL setDTDHandler(const css::uno::Reference < XDTDHandler > & xHandler) override; + virtual void SAL_CALL setEntityResolver(const css::uno::Reference< XEntityResolver >& xResolver) override; + + virtual void SAL_CALL setLocale( const Locale &locale ) override; + +public: // XServiceInfo + OUString SAL_CALL getImplementationName() override; + css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override; + sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override; + +private: + std::unique_ptr<SaxExpatParser_Impl> m_pImpl; +}; + + +// Entity binds all information needed for a single file +struct Entity +{ + InputSource structSource; + XML_Parser pParser; + sax_expatwrap::XMLFile2UTFConverter converter; +}; + + +constexpr OUStringLiteral gsCDATA = u"CDATA"; + +class SaxExpatParser_Impl +{ +public: // module scope + std::mutex aMutex; + bool m_bEnableDoS; // fdo#60471 thank you Adobe Illustrator + + css::uno::Reference< XDocumentHandler > rDocumentHandler; + css::uno::Reference< XExtendedDocumentHandler > rExtendedDocumentHandler; + + css::uno::Reference< XErrorHandler > rErrorHandler; + css::uno::Reference< XDTDHandler > rDTDHandler; + css::uno::Reference< XEntityResolver > rEntityResolver; + css::uno::Reference < XLocator > rDocumentLocator; + + + rtl::Reference < comphelper::AttributeList > rAttrList; + + // External entity stack + vector<struct Entity> vecEntity; + void pushEntity( Entity &&entity ) + { vecEntity.push_back( std::move(entity) ); } + void popEntity() + { vecEntity.pop_back( ); } + struct Entity &getEntity() + { return vecEntity.back(); } + + + // Exception cannot be thrown through the C-XmlParser (possible resource leaks), + // therefore the exception must be saved somewhere. + SAXParseException exception; + css::uno::RuntimeException rtexception; + bool bExceptionWasThrown; + bool bRTExceptionWasThrown; + +public: + SaxExpatParser_Impl() + : m_bEnableDoS(false) + , bExceptionWasThrown(false) + , bRTExceptionWasThrown(false) + { + } + + // the C-Callbacks for the expat parser + void static callbackStartElement(void *userData, const XML_Char *name , const XML_Char **atts); + void static callbackEndElement(void *userData, const XML_Char *name); + void static callbackCharacters( void *userData , const XML_Char *s , int nLen ); + void static callbackProcessingInstruction( void *userData , + const XML_Char *sTarget , + const XML_Char *sData ); + + void static callbackEntityDecl( void *userData , + const XML_Char *entityName, + int is_parameter_entity, + const XML_Char *value, + int value_length, + const XML_Char *base, + const XML_Char *systemId, + const XML_Char *publicId, + const XML_Char *notationName); + + void static callbackNotationDecl( void *userData, + const XML_Char *notationName, + const XML_Char *base, + const XML_Char *systemId, + const XML_Char *publicId); + + bool static callbackExternalEntityRef( XML_Parser parser, + const XML_Char *openEntityNames, + const XML_Char *base, + const XML_Char *systemId, + const XML_Char *publicId); + + int static callbackUnknownEncoding(void *encodingHandlerData, + const XML_Char *name, + XML_Encoding *info); + + void static callbackDefault( void *userData, const XML_Char *s, int len); + + void static callbackStartCDATA( void *userData ); + void static callbackEndCDATA( void *userData ); + void static callbackComment( void *userData , const XML_Char *s ); + void static callErrorHandler( SaxExpatParser_Impl *pImpl , const SAXParseException &e ); + +public: + void parse(); +}; + +extern "C" +{ + static void call_callbackStartElement(void *userData, const XML_Char *name , const XML_Char **atts) + { + SaxExpatParser_Impl::callbackStartElement(userData,name,atts); + } + static void call_callbackEndElement(void *userData, const XML_Char *name) + { + SaxExpatParser_Impl::callbackEndElement(userData,name); + } + static void call_callbackCharacters( void *userData , const XML_Char *s , int nLen ) + { + SaxExpatParser_Impl::callbackCharacters(userData,s,nLen); + } + static void call_callbackProcessingInstruction(void *userData,const XML_Char *sTarget,const XML_Char *sData ) + { + SaxExpatParser_Impl::callbackProcessingInstruction(userData,sTarget,sData ); + } + static void call_callbackEntityDecl(void *userData , + const XML_Char *entityName, + int is_parameter_entity, + const XML_Char *value, + int value_length, + const XML_Char *base, + const XML_Char *systemId, + const XML_Char *publicId, + const XML_Char *notationName) + { + SaxExpatParser_Impl::callbackEntityDecl(userData, entityName, + is_parameter_entity, value, value_length, + base, systemId, publicId, notationName); + } + static void call_callbackNotationDecl(void *userData, + const XML_Char *notationName, + const XML_Char *base, + const XML_Char *systemId, + const XML_Char *publicId) + { + SaxExpatParser_Impl::callbackNotationDecl(userData,notationName,base,systemId,publicId); + } + static int call_callbackExternalEntityRef(XML_Parser parser, + const XML_Char *openEntityNames, + const XML_Char *base, + const XML_Char *systemId, + const XML_Char *publicId) + { + return SaxExpatParser_Impl::callbackExternalEntityRef(parser,openEntityNames,base,systemId,publicId); + } + static int call_callbackUnknownEncoding(void *encodingHandlerData, + const XML_Char *name, + XML_Encoding *info) + { + return SaxExpatParser_Impl::callbackUnknownEncoding(encodingHandlerData,name,info); + } + static void call_callbackDefault( void *userData, const XML_Char *s, int len) + { + SaxExpatParser_Impl::callbackDefault(userData,s,len); + } + static void call_callbackStartCDATA( void *userData ) + { + SaxExpatParser_Impl::callbackStartCDATA(userData); + } + static void call_callbackEndCDATA( void *userData ) + { + SaxExpatParser_Impl::callbackEndCDATA(userData); + } + static void call_callbackComment( void *userData , const XML_Char *s ) + { + SaxExpatParser_Impl::callbackComment(userData,s); + } +} + + +// LocatorImpl + +class LocatorImpl : + public WeakImplHelper< XLocator, css::io::XSeekable > + // should use a different interface for stream positions! +{ +public: + explicit LocatorImpl(SaxExpatParser_Impl *p) + : m_pParser(p) + { + } + +public: //XLocator + virtual sal_Int32 SAL_CALL getColumnNumber() override + { + return XML_GetCurrentColumnNumber( m_pParser->getEntity().pParser ); + } + virtual sal_Int32 SAL_CALL getLineNumber() override + { + return XML_GetCurrentLineNumber( m_pParser->getEntity().pParser ); + } + virtual OUString SAL_CALL getPublicId() override + { + return m_pParser->getEntity().structSource.sPublicId; + } + virtual OUString SAL_CALL getSystemId() override + { + return m_pParser->getEntity().structSource.sSystemId; + } + + // XSeekable (only for getPosition) + + virtual void SAL_CALL seek( sal_Int64 ) override + { + } + virtual sal_Int64 SAL_CALL getPosition() override + { + return XML_GetCurrentByteIndex( m_pParser->getEntity().pParser ); + } + virtual ::sal_Int64 SAL_CALL getLength() override + { + return 0; + } + +private: + + SaxExpatParser_Impl *m_pParser; +}; + + +SaxExpatParser::SaxExpatParser( ) +{ + m_pImpl.reset( new SaxExpatParser_Impl ); + + rtl::Reference<LocatorImpl> pLoc = new LocatorImpl( m_pImpl.get() ); + m_pImpl->rDocumentLocator = pLoc; + + // Performance-improvement; handing out the same object with every call of + // the startElement callback is allowed (see sax-specification): + m_pImpl->rAttrList = new comphelper::AttributeList; + + m_pImpl->bExceptionWasThrown = false; + m_pImpl->bRTExceptionWasThrown = false; +} + +// css::lang::XInitialization: +void SAL_CALL +SaxExpatParser::initialize(css::uno::Sequence< css::uno::Any > const& rArguments) +{ + // possible arguments: a string "DoSmeplease" + if (rArguments.hasElements()) + { + OUString str; + if ((rArguments[0] >>= str) && "DoSmeplease" == str) + { + std::unique_lock guard( m_pImpl->aMutex ); + m_pImpl->m_bEnableDoS = true; + } + } +} + +class ParserCleanup +{ +private: + SaxExpatParser_Impl& m_rParser; + XML_Parser m_xmlParser; +public: + ParserCleanup(SaxExpatParser_Impl& rParser, XML_Parser xmlParser) + : m_rParser(rParser) + , m_xmlParser(xmlParser) + { + } + ~ParserCleanup() + { + m_rParser.popEntity(); + //XML_ParserFree accepts a null arg + XML_ParserFree(m_xmlParser); + } +}; + +/*************** +* +* parseStream does Parser-startup initializations. The SaxExpatParser_Impl::parse() method does +* the file-specific initialization work. (During a parser run, external files may be opened) +* +****************/ +void SaxExpatParser::parseStream( const InputSource& structSource) +{ + // Only one text at one time + std::unique_lock guard( m_pImpl->aMutex ); + + + struct Entity entity; + entity.structSource = structSource; + + if( ! entity.structSource.aInputStream.is() ) + { + throw SAXException("No input source", + css::uno::Reference< css::uno::XInterface > () , css::uno::Any() ); + } + + entity.converter.setInputStream( entity.structSource.aInputStream ); + if( !entity.structSource.sEncoding.isEmpty() ) + { + entity.converter.setEncoding( + OUStringToOString( entity.structSource.sEncoding , RTL_TEXTENCODING_ASCII_US ) ); + } + + // create parser with proper encoding + entity.pParser = XML_ParserCreate( nullptr ); + if( ! entity.pParser ) + { + throw SAXException("Couldn't create parser", + css::uno::Reference< css::uno::XInterface > (), css::uno::Any() ); + } + + // set all necessary C-Callbacks + XML_SetUserData( entity.pParser, m_pImpl.get() ); + XML_SetElementHandler( entity.pParser , + call_callbackStartElement , + call_callbackEndElement ); + XML_SetCharacterDataHandler( entity.pParser , call_callbackCharacters ); + XML_SetProcessingInstructionHandler(entity.pParser , + call_callbackProcessingInstruction ); + if (!m_pImpl->m_bEnableDoS) + { + XML_SetEntityDeclHandler(entity.pParser, call_callbackEntityDecl); + } + XML_SetNotationDeclHandler( entity.pParser, call_callbackNotationDecl ); + XML_SetExternalEntityRefHandler( entity.pParser, + call_callbackExternalEntityRef); + XML_SetUnknownEncodingHandler( entity.pParser, call_callbackUnknownEncoding ,nullptr); + + if( m_pImpl->rExtendedDocumentHandler.is() ) { + + // These handlers just delegate calls to the ExtendedHandler. If no extended handler is + // given, these callbacks can be ignored + XML_SetDefaultHandlerExpand( entity.pParser, call_callbackDefault ); + XML_SetCommentHandler( entity.pParser, call_callbackComment ); + XML_SetCdataSectionHandler( entity.pParser , + call_callbackStartCDATA , + call_callbackEndCDATA ); + } + + + m_pImpl->exception = SAXParseException(); + auto const xmlParser = entity.pParser; + m_pImpl->pushEntity( std::move(entity) ); + + ParserCleanup aEnsureFree(*m_pImpl, xmlParser); + + // start the document + if( m_pImpl->rDocumentHandler.is() ) { + m_pImpl->rDocumentHandler->setDocumentLocator( m_pImpl->rDocumentLocator ); + m_pImpl->rDocumentHandler->startDocument(); + } + + m_pImpl->parse(); + + // finish document + if( m_pImpl->rDocumentHandler.is() ) { + m_pImpl->rDocumentHandler->endDocument(); + } +} + +void SaxExpatParser::setDocumentHandler(const css::uno::Reference< XDocumentHandler > & xHandler) +{ + m_pImpl->rDocumentHandler = xHandler; + m_pImpl->rExtendedDocumentHandler = + css::uno::Reference< XExtendedDocumentHandler >( xHandler , css::uno::UNO_QUERY ); +} + +void SaxExpatParser::setErrorHandler(const css::uno::Reference< XErrorHandler > & xHandler) +{ + m_pImpl->rErrorHandler = xHandler; +} + +void SaxExpatParser::setDTDHandler(const css::uno::Reference< XDTDHandler > & xHandler) +{ + m_pImpl->rDTDHandler = xHandler; +} + +void SaxExpatParser::setEntityResolver(const css::uno::Reference < XEntityResolver > & xResolver) +{ + m_pImpl->rEntityResolver = xResolver; +} + + +void SaxExpatParser::setLocale( const Locale & ) +{ + // not implemented +} + +// XServiceInfo +OUString SaxExpatParser::getImplementationName() +{ + return "com.sun.star.comp.extensions.xml.sax.ParserExpat"; +} + +// XServiceInfo +sal_Bool SaxExpatParser::supportsService(const OUString& ServiceName) +{ + return cppu::supportsService(this, ServiceName); +} + +// XServiceInfo +css::uno::Sequence< OUString > SaxExpatParser::getSupportedServiceNames() +{ + return { "com.sun.star.xml.sax.Parser" }; +} + + +/*--------------------------------------- +* +* Helper functions and classes +* +* +*-------------------------------------------*/ +OUString getErrorMessage( XML_Error xmlE, std::u16string_view sSystemId , sal_Int32 nLine ) +{ + OUString Message; + if( XML_ERROR_NONE == xmlE ) { + Message = "No"; + } + else if( XML_ERROR_NO_MEMORY == xmlE ) { + Message = "no memory"; + } + else if( XML_ERROR_SYNTAX == xmlE ) { + Message = "syntax"; + } + else if( XML_ERROR_NO_ELEMENTS == xmlE ) { + Message = "no elements"; + } + else if( XML_ERROR_INVALID_TOKEN == xmlE ) { + Message = "invalid token"; + } + else if( XML_ERROR_UNCLOSED_TOKEN == xmlE ) { + Message = "unclosed token"; + } + else if( XML_ERROR_PARTIAL_CHAR == xmlE ) { + Message = "partial char"; + } + else if( XML_ERROR_TAG_MISMATCH == xmlE ) { + Message = "tag mismatch"; + } + else if( XML_ERROR_DUPLICATE_ATTRIBUTE == xmlE ) { + Message = "duplicate attribute"; + } + else if( XML_ERROR_JUNK_AFTER_DOC_ELEMENT == xmlE ) { + Message = "junk after doc element"; + } + else if( XML_ERROR_PARAM_ENTITY_REF == xmlE ) { + Message = "parameter entity reference"; + } + else if( XML_ERROR_UNDEFINED_ENTITY == xmlE ) { + Message = "undefined entity"; + } + else if( XML_ERROR_RECURSIVE_ENTITY_REF == xmlE ) { + Message = "recursive entity reference"; + } + else if( XML_ERROR_ASYNC_ENTITY == xmlE ) { + Message = "async entity"; + } + else if( XML_ERROR_BAD_CHAR_REF == xmlE ) { + Message = "bad char reference"; + } + else if( XML_ERROR_BINARY_ENTITY_REF == xmlE ) { + Message = "binary entity reference"; + } + else if( XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF == xmlE ) { + Message = "attribute external entity reference"; + } + else if( XML_ERROR_MISPLACED_XML_PI == xmlE ) { + Message = "misplaced xml processing instruction"; + } + else if( XML_ERROR_UNKNOWN_ENCODING == xmlE ) { + Message = "unknown encoding"; + } + else if( XML_ERROR_INCORRECT_ENCODING == xmlE ) { + Message = "incorrect encoding"; + } + else if( XML_ERROR_UNCLOSED_CDATA_SECTION == xmlE ) { + Message = "unclosed cdata section"; + } + else if( XML_ERROR_EXTERNAL_ENTITY_HANDLING == xmlE ) { + Message = "external entity reference"; + } + else if( XML_ERROR_NOT_STANDALONE == xmlE ) { + Message = "not standalone"; + } + + OUString str = OUString::Concat("[") + + sSystemId + + " line " + + OUString::number( nLine ) + + "]: " + + Message + + "error"; + + return str; +} + + +// starts parsing with actual parser ! +void SaxExpatParser_Impl::parse( ) +{ + const int nBufSize = 16*1024; + + int nRead = nBufSize; + css::uno::Sequence< sal_Int8 > seqOut(nBufSize); + + while( nRead ) { + nRead = getEntity().converter.readAndConvert( seqOut , nBufSize ); + + bool bContinue(false); + + if( ! nRead ) { + // last call - must return OK + XML_Status const ret = XML_Parse( getEntity().pParser, + reinterpret_cast<const char *>(seqOut.getConstArray()), + 0 , + 1 ); + if (ret == XML_STATUS_OK) { + break; + } + } else { + bContinue = ( XML_Parse( getEntity().pParser, + reinterpret_cast<const char *>(seqOut.getConstArray()), + nRead, + 0 ) != XML_STATUS_ERROR ); + } + + if( ! bContinue || bExceptionWasThrown ) { + + if ( bRTExceptionWasThrown ) + throw rtexception; + + // Error during parsing ! + XML_Error xmlE = XML_GetErrorCode( getEntity().pParser ); + OUString sSystemId = rDocumentLocator->getSystemId(); + sal_Int32 nLine = rDocumentLocator->getLineNumber(); + + SAXParseException aExcept( + getErrorMessage(xmlE , sSystemId, nLine) , + css::uno::Reference< css::uno::XInterface >(), + css::uno::Any( &exception , cppu::UnoType<decltype(exception)>::get() ), + rDocumentLocator->getPublicId(), + rDocumentLocator->getSystemId(), + rDocumentLocator->getLineNumber(), + rDocumentLocator->getColumnNumber() + ); + + if( rErrorHandler.is() ) { + + // error handler is set, so the handler may throw the exception + css::uno::Any a; + a <<= aExcept; + rErrorHandler->fatalError( a ); + } + + // Error handler has not thrown an exception, but parsing cannot go on, + // so an exception MUST be thrown. + throw aExcept; + } // if( ! bContinue ) + } // while +} + + +// The C-Callbacks + + +void SaxExpatParser_Impl::callbackStartElement( void *pvThis , + const XML_Char *pwName , + const XML_Char **awAttributes ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + + if( !pImpl->rDocumentHandler.is() ) + return; + + int i = 0; + pImpl->rAttrList->Clear(); + + while( awAttributes[i] ) { + assert(awAttributes[i+1]); + pImpl->rAttrList->AddAttribute( + XML_CHAR_TO_OUSTRING( awAttributes[i] ) , + gsCDATA, // expat doesn't know types + XML_CHAR_TO_OUSTRING( awAttributes[i+1] ) ); + i +=2; + } + + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( + pImpl , + rDocumentHandler->startElement( XML_CHAR_TO_OUSTRING( pwName ) , + pImpl->rAttrList ) ); +} + +void SaxExpatParser_Impl::callbackEndElement( void *pvThis , const XML_Char *pwName ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + + if( pImpl->rDocumentHandler.is() ) { + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( pImpl, + rDocumentHandler->endElement( XML_CHAR_TO_OUSTRING( pwName ) ) ); + } +} + + +void SaxExpatParser_Impl::callbackCharacters( void *pvThis , const XML_Char *s , int nLen ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + + if( pImpl->rDocumentHandler.is() ) { + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( pImpl , + rDocumentHandler->characters( XML_CHAR_N_TO_USTRING(s,nLen) ) ); + } +} + +void SaxExpatParser_Impl::callbackProcessingInstruction( void *pvThis, + const XML_Char *sTarget , + const XML_Char *sData ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + if( pImpl->rDocumentHandler.is() ) { + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( + pImpl , + rDocumentHandler->processingInstruction( XML_CHAR_TO_OUSTRING( sTarget ), + XML_CHAR_TO_OUSTRING( sData ) ) ); + } +} + + +void SaxExpatParser_Impl::callbackEntityDecl( + void *pvThis, const XML_Char *entityName, + SAL_UNUSED_PARAMETER int /*is_parameter_entity*/, + const XML_Char *value, SAL_UNUSED_PARAMETER int /*value_length*/, + SAL_UNUSED_PARAMETER const XML_Char * /*base*/, const XML_Char *systemId, + const XML_Char *publicId, const XML_Char *notationName) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + if (value) { // value != 0 means internal entity + SAL_INFO("sax","SaxExpatParser: internal entity declaration, stopping"); + XML_StopParser(pImpl->getEntity().pParser, XML_FALSE); + pImpl->exception = SAXParseException( + "SaxExpatParser: internal entity declaration, stopping", + nullptr, css::uno::Any(), + pImpl->rDocumentLocator->getPublicId(), + pImpl->rDocumentLocator->getSystemId(), + pImpl->rDocumentLocator->getLineNumber(), + pImpl->rDocumentLocator->getColumnNumber() ); + pImpl->bExceptionWasThrown = true; + } else { + if( pImpl->rDTDHandler.is() ) { + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( + pImpl , + rDTDHandler->unparsedEntityDecl( + XML_CHAR_TO_OUSTRING( entityName ), + XML_CHAR_TO_OUSTRING( publicId ) , + XML_CHAR_TO_OUSTRING( systemId ) , + XML_CHAR_TO_OUSTRING( notationName ) ) ); + } + } +} + +void SaxExpatParser_Impl::callbackNotationDecl( + void *pvThis, const XML_Char *notationName, + SAL_UNUSED_PARAMETER const XML_Char * /*base*/, const XML_Char *systemId, + const XML_Char *publicId) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + if( pImpl->rDTDHandler.is() ) { + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( pImpl, + rDTDHandler->notationDecl( XML_CHAR_TO_OUSTRING( notationName ) , + XML_CHAR_TO_OUSTRING( publicId ) , + XML_CHAR_TO_OUSTRING( systemId ) ) ); + } + +} + + +bool SaxExpatParser_Impl::callbackExternalEntityRef( + XML_Parser parser, const XML_Char *context, + SAL_UNUSED_PARAMETER const XML_Char * /*base*/, const XML_Char *systemId, + const XML_Char *publicId) +{ + bool bOK = true; + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(XML_GetUserData( parser )); + + struct Entity entity; + + if( pImpl->rEntityResolver.is() ) { + try + { + entity.structSource = pImpl->rEntityResolver->resolveEntity( + XML_CHAR_TO_OUSTRING( publicId ) , + XML_CHAR_TO_OUSTRING( systemId ) ); + } + catch( const SAXParseException & e ) + { + pImpl->exception = e; + bOK = false; + } + catch( const SAXException & e ) + { + pImpl->exception = SAXParseException( + e.Message , e.Context , e.WrappedException , + pImpl->rDocumentLocator->getPublicId(), + pImpl->rDocumentLocator->getSystemId(), + pImpl->rDocumentLocator->getLineNumber(), + pImpl->rDocumentLocator->getColumnNumber() ); + bOK = false; + } + } + + if( entity.structSource.aInputStream.is() ) { + entity.pParser = XML_ExternalEntityParserCreate( parser , context, nullptr ); + if( ! entity.pParser ) + { + return false; + } + + entity.converter.setInputStream( entity.structSource.aInputStream ); + auto const xmlParser = entity.pParser; + pImpl->pushEntity( std::move(entity) ); + try + { + pImpl->parse(); + } + catch( const SAXParseException & e ) + { + pImpl->exception = e; + bOK = false; + } + catch( const IOException &e ) + { + pImpl->exception.WrappedException <<= e; + bOK = false; + } + catch( const css::uno::RuntimeException &e ) + { + pImpl->exception.WrappedException <<=e; + bOK = false; + } + + pImpl->popEntity(); + + XML_ParserFree( xmlParser ); + } + + return bOK; +} + +int SaxExpatParser_Impl::callbackUnknownEncoding( + SAL_UNUSED_PARAMETER void * /*encodingHandlerData*/, + SAL_UNUSED_PARAMETER const XML_Char * /*name*/, + SAL_UNUSED_PARAMETER XML_Encoding * /*info*/) +{ + return 0; +} + +void SaxExpatParser_Impl::callbackDefault( void *pvThis, const XML_Char *s, int len) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( pImpl, + rExtendedDocumentHandler->unknown( XML_CHAR_N_TO_USTRING( s ,len) ) ); +} + +void SaxExpatParser_Impl::callbackComment( void *pvThis , const XML_Char *s ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( pImpl, + rExtendedDocumentHandler->comment( XML_CHAR_TO_OUSTRING( s ) ) ); +} + +void SaxExpatParser_Impl::callbackStartCDATA( void *pvThis ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS( pImpl, rExtendedDocumentHandler->startCDATA() ); +} + + +void SaxExpatParser_Impl::callErrorHandler( SaxExpatParser_Impl *pImpl , + const SAXParseException & e ) +{ + try + { + if( pImpl->rErrorHandler.is() ) { + css::uno::Any a; + a <<= e; + pImpl->rErrorHandler->error( a ); + } + else { + pImpl->exception = e; + pImpl->bExceptionWasThrown = true; + } + } + catch( const SAXParseException & ex ) { + pImpl->exception = ex; + pImpl->bExceptionWasThrown = true; + } + catch( const SAXException & ex ) { + pImpl->exception = SAXParseException( + ex.Message, + ex.Context, + ex.WrappedException, + pImpl->rDocumentLocator->getPublicId(), + pImpl->rDocumentLocator->getSystemId(), + pImpl->rDocumentLocator->getLineNumber(), + pImpl->rDocumentLocator->getColumnNumber() + ); + pImpl->bExceptionWasThrown = true; + } +} + +void SaxExpatParser_Impl::callbackEndCDATA( void *pvThis ) +{ + SaxExpatParser_Impl *pImpl = static_cast<SaxExpatParser_Impl*>(pvThis); + + CALL_ELEMENT_HANDLER_AND_CARE_FOR_EXCEPTIONS(pImpl,rExtendedDocumentHandler->endCDATA() ); +} + +} // namespace + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * +com_sun_star_comp_extensions_xml_sax_ParserExpat_get_implementation( + css::uno::XComponentContext *, + css::uno::Sequence<css::uno::Any> const &) +{ + return cppu::acquire(new SaxExpatParser); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |