xmlfilterimpl.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// XMLFilterImpl.h
//
// $Id: //poco/Main/XML/include/SAX/XMLFilterImpl.h#5 $
//
// SAX2 XMLFilterImpl 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
//    system on which the executable file runs.
//
// 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
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef SAX_XMLFilterImpl_INCLUDED
#define SAX_XMLFilterImpl_INCLUDED


#ifndef XML_XML_INCLUDED
#include "XML/XML.h"
#endif
#ifndef SAX_XMLFilter_INCLUDED
#include "SAX/XMLFilter.h"
#endif
#ifndef SAX_EntityResolver_INCLUDED
#include "SAX/EntityResolver.h"
#endif
#ifndef SAX_DTDHandler_INCLUDED
#include "SAX/DTDHandler.h"
#endif
#ifndef SAX_ContentHandler_INCLUDED
#include "SAX/ContentHandler.h"
#endif
#ifndef SAX_ErrorHandler_INCLUDED
#include "SAX/ErrorHandler.h"
#endif


XML_BEGIN


class XML_API XMLFilterImpl: public XMLFilter, public EntityResolver, public DTDHandler, public ContentHandler, public ErrorHandler
	/// Base class for deriving an XML filter.
	///
	/// This class is designed to sit between an XMLReader and the client application's event 
	/// handlers. By default, it does nothing but pass requests up to the reader and events on to 
	/// the handlers unmodified, but subclasses can override specific methods to modify the event 
	/// stream or the configuration requests as they pass through.
{
public:
	XMLFilterImpl();
		/// Construct an empty XML filter, with no parent.
		///
		/// This filter will have no parent: you must assign a parent before you start a parse or do any 
		/// configuration with setFeature or setProperty, unless you use this as a pure event consumer rather 
		/// than as an XMLReader.
		
	XMLFilterImpl(XMLReader* pParent);
		/// Construct an XML filter with the specified parent.
		
	~XMLFilterImpl();
		/// Destroys the XMLFilterImpl.
	
	// XMLFilter
	XMLReader* getParent() const;
	void setParent(XMLReader* pParent);

	// 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);

	// EntityResolver
	InputSource* resolveEntity(const XMLString* publicId, const XMLString& systemId);
	void releaseInputSource(InputSource* pSource);
	
	// DTDHandler
	void notationDecl(const XMLString& name, const XMLString* publicId, const XMLString* systemId);
	void unparsedEntityDecl(const XMLString& name, const XMLString* publicId, const XMLString& systemId, const XMLString& notationName);

	// ContentHandler
	void setDocumentLocator(const Locator* loc);
	void startDocument();
	void endDocument();
	void startElement(const XMLString& uri, const XMLString& localName, const XMLString& qname, const Attributes& attrList);
	void endElement(const XMLString& uri, const XMLString& localName, const XMLString& qname);
	void characters(const XMLChar ch[], int start, int length);
	void ignorableWhitespace(const XMLChar ch[], int start, int length);
	void processingInstruction(const XMLString& target, const XMLString& data);
	void startPrefixMapping(const XMLString& prefix, const XMLString& uri);
	void endPrefixMapping(const XMLString& prefix);
	void skippedEntity(const XMLString& prefix);
	void warning(const SAXException& e);
	void error(const SAXException& e);
	void fatalError(const SAXException& e);

protected:
	XMLReader* parent() const;
		/// Return a pointer to the parent reader.
		/// Subclasses can use this method instead of
		/// getParent() for better performance - this method
		/// is non-virtual and implemented as inline.
	
	virtual void setupParse();
		/// Setup the event handlers in the parent reader.
	
private:
	XMLReader*      _pParent;
	EntityResolver* _pEntityResolver;
	DTDHandler*     _pDTDHandler;
	ContentHandler* _pContentHandler;
	ErrorHandler*   _pErrorHandler;
};


//
// inlines
//
inline XMLReader* XMLFilterImpl::parent() const
{
	return _pParent;
}


XML_END


#endif // SAX_XMLFilterImpl_INCLUDED