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/*
 * This file is part of the syndication library
 *
 * Copyright (C) 2005 Frank Osterfeld <osterfeld@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef SYNDICATION_RSS2_PARSER_H
#define SYNDICATION_RSS2_PARSER_H

#include <syndication/rss2/document.h>
#include <syndication/abstractparser.h>

namespace Syndication {

class DocumentSource;

namespace RSS2 {

class Document;

/**
 * Parser implementation for the RSS 0.9x/2.0 format family
 *
 * @author Frank Osterfeld
 */
class SYNDICATION_EXPORT Parser : public Syndication::AbstractParser
{
    public:

        /** default constructor */
        Parser();

        /** destructor */
        virtual ~Parser();

        /**
         * checks whether a document source looks like an RSS0.9x/2.0 document
         *
         * @param source a document source to check
         * @return @c true if the source looks like an RSS2 document
         */
        bool accept(const DocumentSource& source) const;

        /**
         * creates an RSS2 wrapper for a document source.
         * The wrapper will only return useful values if the source is really
         * RSS 0.9x/2.0, so call accept() before to check.
         *
         * @param source the source to wrap
         * @return A Syndication::RSS2::Document instance wrapping the XML
         * source, or a null document (not a null pointer!) if there is no @c
         * &lt;channel> root element in the source.
         */
        Syndication::SpecificDocumentPtr parse(const DocumentSource& source) const;

        /**
         * returns the format string of this parser implementation, which is
         * "rss2".
         *
         * @return @c "rss2"
         */
        QString format() const;

    private:

        Parser(const Parser& other);
        Parser& operator=(const Parser& other);
        
        class ParserPrivate;
        ParserPrivate* const d;
};

} // namespace RSS2
} // namespace Syndication

#endif // SYNDICATION_RSS2_PARSER_H