/** @file
 * @brief subclass of XmlParser for extracting text from HTML.
 */
/* Copyright 1999,2000,2001 BrightStation PLC
 * Copyright 2002-2023 Olly Betts
 *
 * 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, see
 * <https://www.gnu.org/licenses/>.
 */

#ifndef OMEGA_INCLUDED_HTMLPARSER_H
#define OMEGA_INCLUDED_HTMLPARSER_H

#include "xmlparser.h"

#include <ctime>

// FIXME: Should we include \xa0 which is non-breaking space in iso-8859-1, but
// not in all charsets and perhaps spans of all \xa0 should become a single
// \xa0?
#define WHITESPACE " \t\n\r"

class HtmlParser : public XmlParser {
  public:
    bool pending_space = false;
    bool in_script_tag = false;
    bool in_style_tag = false;
    bool indexing_allowed = true;
    bool ignoring_metarobots = false;
    bool charset_from_meta = false;
    bool description_as_sample = false;
    std::string title, sample, keywords, dump, author, topic;
    time_t created = time_t(-1);
    std::string* target;

    void process_content(const std::string& content);
    bool opening_tag(const std::string& tag);
    bool closing_tag(const std::string& tag);
    void parse(std::string_view text,
               const std::string& charset_,
               bool charset_from_meta_);
    void ignore_metarobots() { ignoring_metarobots = true; }

    HtmlParser() : XmlParser(false), target(&dump) { }

    void reset() {
        pending_space = false;
        in_script_tag = false;
        in_style_tag = false;
        indexing_allowed = true;
        ignoring_metarobots = false;
        charset_from_meta = false;
        description_as_sample = false;
        title.resize(0);
        sample.resize(0);
        keywords.resize(0);
        dump.resize(0);
        author.resize(0);
        topic.resize(0);
        created = time_t(-1);
        target = &dump;
    }
};

#endif // OMEGA_INCLUDED_HTMLPARSER_H
