ClickHouse/base/poco/XML/include/Poco/SAX/SAXParser.h

//
// SAXParser.h
//
// Library: XML
// Package: SAX
// Module:  SAX
//
// Implementation of the XMLReader interface.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier:	BSL-1.0
//


#ifndef SAX_SAXParser_INCLUDED
#define SAX_SAXParser_INCLUDED


#include "Poco/SAX/XMLReader.h"
#include "Poco/XML/ParserEngine.h"
#include "Poco/XML/XML.h"


namespace Poco
{
namespace XML
{


    class XML_API SAXParser : public XMLReader
    /// This class provides a SAX2 (Simple API for XML) interface to expat,
    /// the XML parser toolkit.
    /// The following SAX2 features and properties are supported:
    ///   * http://xml.org/sax/features/external-general-entities
    ///   * http://xml.org/sax/features/external-parameter-entities
    ///   * http://xml.org/sax/features/namespaces
    ///   * http://xml.org/sax/features/namespace-prefixes
    ///   * http://xml.org/sax/properties/lexical-handler
    ///   * http://xml.org/sax/properties/declaration-handler
    ///
    /// The following proprietary extensions are supported:
    ///   * http://www.appinf.com/features/enable-partial-reads --
    ///     see ParserEngine::setEnablePartialReads()
    ///   * http://www.appinf.com/properties/bla-maximum-amplification
    ///     see ParserEngine::setBillionLaughsAttackProtectionMaximumAmplification();
    ///     argument must be a float >= 1.0 formatted as string;
    ///     property is set-only.
    ///   * http://www.appinf.com/properties/bla-activation-threshold
    ///     see ParserEngine::setBillionLaughsAttackProtectionActivationThreshold();
    ///     argument must be a 64-bit unsigned integer formatted as string;
    ///     property is set-only.
    {
    public:
        SAXParser();
        /// Creates an SAXParser.

        SAXParser(const XMLString & encoding);
        /// Creates an SAXParser with the given encoding.

        ~SAXParser();
        /// Destroys the SAXParser.

        void setEncoding(const XMLString & encoding);
        /// Sets the encoding used by the parser if no
        /// encoding is specified in the XML document.

        const XMLString & getEncoding() const;
        /// Returns the name of the encoding used by
        /// the parser if no encoding is specified in
        /// the XML document.

        void addEncoding(const XMLString & name, Poco::TextEncoding * pEncoding);
        /// Adds an encoding to the parser. Does not take ownership of the pointer!

        /// XMLReader
        void setEntityResolver(EntityResolver * pResolver);
        EntityResolver * getEntityResolver() const;
        void setDTDHandler(DTDHandler * pDTDHandler);
        DTDHandler * getDTDHandler() const;
        void setContentHandler(ContentHandler * pContentHandler);
        ContentHandler * getContentHandler() const;
        void setErrorHandler(ErrorHandler * pErrorHandler);
        ErrorHandler * getErrorHandler() const;
        void setFeature(const XMLString & featureId, bool state);
        bool getFeature(const XMLString & featureId) const;
        void setProperty(const XMLString & propertyId, const XMLString & value);
        void setProperty(const XMLString & propertyId, void * value);
        void * getProperty(const XMLString & propertyId) const;
        void parse(InputSource * pSource);
        void parse(const XMLString & systemId);
        void parseMemoryNP(const char * xml, std::size_t size);

        /// Extensions
        void parseString(const std::string & xml);

        static const XMLString FEATURE_PARTIAL_READS;
        static const XMLString PROPERTY_BLA_MAXIMUM_AMPLIFICATION;
        static const XMLString PROPERTY_BLA_ACTIVATION_THRESHOLD;

    protected:
        void setupParse();

    private:
        ParserEngine _engine;
        bool _namespaces;
        bool _namespacePrefixes;
    };


}
} // namespace Poco::XML


#endif // SAX_SAXParser_INCLUDED