RetroShare/plugins/FeedReader/util/XPathWrapper.h

/****************************************************************
 *  RetroShare GUI is distributed under the following license:
 *
 *  Copyright (C) 2012 by Thunder
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
 ****************************************************************/

#ifndef XPATHWRAPPER
#define XPATHWRAPPER

#include <libxml/xpath.h>

class XMLWrapper;

class XPathWrapper
{
	friend class XMLWrapper;

public:
	~XPathWrapper();

	void cleanup();

	bool compile(const char *expression);

	xmlXPathObjectType type();

	unsigned int count();
	xmlNodePtr node(unsigned int index);

protected:
	explicit XPathWrapper(XMLWrapper &xmlWrapper);

	XMLWrapper &mXMLWrapper;
	xmlXPathContextPtr mContext;
	xmlXPathObjectPtr mResult;
};

#endif