//
// DOMParser.h
//
// $Id: //poco/Main/XML/include/DOM/DOMParser.h#5 $
//
// Definition of the DOMParser class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
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// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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//


#ifndef DOM_DOMParser_INCLUDED
#define DOM_DOMParser_INCLUDED


#ifndef XML_XML_INCLUDED
#include "XML/XML.h"
#endif
#ifndef SAX_SAXParser_INCLUDED
#include "SAX/SAXParser.h"
#endif


XML_BEGIN


class NamePool;
class Document;
class InputSource;
class EntityResolver;


class XML_API DOMParser
	/// This is a convenience class that combines a
	/// DOMBuilder with a SAXParser, with the optional
	/// support of a WhitespaceFilter.
{
public:
	DOMParser(NamePool* pNamePool = 0);
		/// Creates a new DOMParser. 
		/// If a NamePool is given, it becomes the Document's NamePool.

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

	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, Foundation::TextEncoding* pEncoding);
		/// Adds an encoding to the parser.

	void setFeature(const XMLString& name, bool state);
		/// Set the state of a feature.
		///
		/// If a feature is not recognized by the DOMParser, it is
		/// passed on to the underlying XMLReader.
		///
		/// The only currently supported feature is
		/// http://www.appinf.com/features/no-whitespace-in-element-content
		/// which, when activated, causes the WhitespaceFilter to
		/// be used.

	bool getFeature(const XMLString& name) const;
		/// Look up the value of a feature.
		///
		/// If a feature is not recognized by the DOMParser, the
		/// DOMParser queries the underlying SAXParser for the feature.

	Document* parse(const XMLString& uri);
		/// Parse an XML document from a location identified by an URI.

	Document* parse(InputSource* pInputSource);
		/// Parse an XML document from a location identified by an InputSource.

	Document* parseString(const std::string& xml);
		/// Parse an XML document from a string.

	EntityResolver* getEntityResolver() const;
		/// Returns the entity resolver used by the underlying SAXParser.

	void setEntityResolver(EntityResolver* pEntityResolver);
		/// Sets the entity resolver on the underlying SAXParser.

	static const XMLString FEATURE_WHITESPACE;
	
private:
	SAXParser _saxParser;
	NamePool* _pNamePool;
	bool      _whitespace;
};


XML_END


#endif // DOM_DOMParser_INCLUDED