whitespacefilter.cpp

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

//
// WhitespaceFilter.cpp
//
// $Id: //poco/Main/XML/src/WhitespaceFilter.cpp#5 $
//
// Copyright (c) 2004-2005, 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.
//


#include "SAX/WhitespaceFilter.h"
#include "SAX/SAXException.h"


XML_BEGIN


WhitespaceFilter::WhitespaceFilter():
	_pLexicalHandler(0),
	_filter(true)
{
}

	
WhitespaceFilter::WhitespaceFilter(XMLReader* pReader): 
	XMLFilterImpl(pReader),
	_pLexicalHandler(0),
	_filter(true)
{
}


WhitespaceFilter::~WhitespaceFilter()
{
}


void WhitespaceFilter::setProperty(const XMLString& propertyId, const XMLString& value)
{
	if (propertyId == XMLReader::PROPERTY_LEXICAL_HANDLER)
		throw SAXNotSupportedException(std::string("property does not take a string value: ") + fromXMLString(propertyId));
	else
		XMLFilterImpl::setProperty(propertyId, value);

}


void WhitespaceFilter::setProperty(const XMLString& propertyId, void* value)
{
	if (propertyId == XMLReader::PROPERTY_LEXICAL_HANDLER)
		_pLexicalHandler = reinterpret_cast<LexicalHandler*>(value);
	else
		XMLFilterImpl::setProperty(propertyId, value);
}


void* WhitespaceFilter::getProperty(const XMLString& propertyId) const
{
	if (propertyId == XMLReader::PROPERTY_LEXICAL_HANDLER)
		return _pLexicalHandler;
	else
		return XMLFilterImpl::getProperty(propertyId);
}


void WhitespaceFilter::startDocument()
{
	XMLFilterImpl::startDocument();
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::endDocument()
{
	XMLFilterImpl::endDocument();
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::startElement(const XMLString& uri, const XMLString& localName, const XMLString& qname, const Attributes& attrList)
{
	XMLFilterImpl::startElement(uri, localName, qname, attrList);
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::endElement(const XMLString& uri, const XMLString& localName, const XMLString& qname)
{
	XMLFilterImpl::endElement(uri, localName, qname);
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::characters(const XMLChar ch[], int start, int length)
{
	if (_filter)
	{
		bool ws = true;
		const XMLChar* it  = ch + start;
		const XMLChar* end = ch + start + length;
		_data.append(it, end);
		while (it != end)
		{
			if (*it != '\r' && *it != '\n' && *it != '\t' && *it != ' ')
			{
				ws = false;
				break;
			}
			++it;
		}
		if (!ws)
		{
			XMLFilterImpl::characters(_data.data(), 0, (int) _data.length());
			_filter = false;
			_data.clear();	
		}
	}
	else XMLFilterImpl::characters(ch, start, length);
}


void WhitespaceFilter::ignorableWhitespace(const XMLChar ch[], int start, int length)
{
	// the handler name already says that this data can be ignored
}


void WhitespaceFilter::processingInstruction(const XMLString& target, const XMLString& data)
{
	XMLFilterImpl::processingInstruction(target, data);
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::startDTD(const XMLString& name, const XMLString& publicId, const XMLString& systemId)
{
	if (_pLexicalHandler)
		_pLexicalHandler->startDTD(name, publicId, systemId);
}


void WhitespaceFilter::endDTD()
{
	if (_pLexicalHandler)
		_pLexicalHandler->endDTD();
}


void WhitespaceFilter::startEntity(const XMLString& name)
{
	if (_pLexicalHandler)
		_pLexicalHandler->startEntity(name);
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::endEntity(const XMLString& name)
{
	if (_pLexicalHandler)
		_pLexicalHandler->endEntity(name);
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::startCDATA()
{
	if (_pLexicalHandler)
		_pLexicalHandler->startCDATA();
	_filter = false;
	_data.clear();
}


void WhitespaceFilter::endCDATA()
{
	if (_pLexicalHandler)
		_pLexicalHandler->endCDATA();
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::comment(const XMLChar ch[], int start, int length)
{
	if (_pLexicalHandler)
		_pLexicalHandler->comment(ch, start, length);
	_filter = true;
	_data.clear();
}


void WhitespaceFilter::setupParse()
{
	XMLFilterImpl::setupParse();

	parent()->setProperty(XMLReader::PROPERTY_LEXICAL_HANDLER, static_cast<LexicalHandler*>(this));
}


XML_END