mambax7 / planet

class/xmlparser.php

<?php
//
// ------------------------------------------------------------------------ //
// 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.                                      //
//                                                                          //
// You may not change or alter any portion of this comment or credits       //
// of supporting developers from this source code or any supporting         //
// source code which is considered copyrighted (c) material of the          //
// original comment or credit authors.                                      //
//                                                                          //
// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
// ------------------------------------------------------------------------ //
// Author: phppp (D.J., infomax@gmail.com)                                  //
// URL: https://xoops.org                         //
// Project: Article Project                                                 //
// ------------------------------------------------------------------------ //
/**
 * @package   module::blogline
 * @copyright copyright &copy; 2005 XoopsForge.com
 */
global $msg;

require_once XOOPS_ROOT_PATH . '/modules/' . $GLOBALS['moddirname'] . '/class/magpie.inc.php';

/**
 * XmlParser
 *
 * @author    D.J. (phppp)
 * @copyright copyright &copy; 2005 XoopsForge.com
 * @package   module::article
 *
 * {@link MagpieRSS}
 **/
class xmlparser extends MagpieRSS
{
    public $content;
    public $charset_in;
    public $charset_out;

    /**
     *  Set up XML parser, parse source, and return populated RSS object..
     *
     * @param string      $content    string containing the RSS to be parsed
     *
     *
     * @param string      $input_charset
     * @param null|string $output_charset
     * @param array       $tags
     * @internal param string $output_encoding output the parsed RSS in this character
     *                                set defaults to ISO-8859-1 as this is PHP's
     *                                default.
     *
     * @internal param string $input_encoding the character set of the incoming RSS source.
     *                                Leave blank and Magpie will try to figure it
     *                                out.
     */
    public function __construct($content, $input_charset, $output_charset = _CHARSET, $tags = [])
    {
        if (!in_array(strtoupper($input_charset), ['UTF-8', 'US-ASCII', 'ISO-8859-1'])) {
            $content       = XoopsLocal::convert_encoding($content, 'UTF-8', $input_charset);
            $content       = preg_replace('/(<\?xml.*encoding=[\'"])(.*?)([\'"].*\?>)/m', '$1UTF-8$3', $content);
            $input_charset = 'UTF-8';
        }
        $this->content     = $content;
        $this->charset_in  = $input_charset;
        $this->charset_out = $output_charset;

        /* TODO: parse specified tags only */
        parent::__construct($content, $input_charset, $input_charset, false);

        //xoops_message($this);
        unset($this->content);
        $this->encoding_convert($tags);
    }

    /**
     * @return bool|string
     */
    public function is_atom()
    {
        if (ATOM == $this->feed_type) {
            $this->feed_version = empty($this->feed_version) ? '0.3' : $this->feed_version;

            return $this->feed_version;
        } else {
            return false;
        }
    }

    public function normalize()
    {
        if ($this->is_atom()):
            if (empty($this->channel['tagline'])) {
                /* ATOM */
                $this->channel['tagline'] = @$this->channel['subtitle'];
                unset($this->channel['subtitle']);
            }
        for ($i = 0, $iMax = count($this->items); $i < $iMax; ++$i) {
            // ATOM time
            if ($date = @$this->items[$i]['modified']) {
                continue;
            }
            if (empty($date)) {
                $date = @$this->items[$i]['updated'];
            }
            if (empty($date)) {
                $date = @$this->items[$i]['issued'];
            }
            if (empty($date)) {
                $date = @$this->items[$i]['created'];
            }
            if (empty($date)) {
                $date = @$this->items[$i]['created'];
            }
            $this->items[$i]['modified'] = $date;
        } elseif ('1.0' !== $this->is_rss()):
            for ($i = 0, $iMax = count($this->items); $i < $iMax; ++$i) {
                if ($date = @$this->items[$i]['pubdate']) {

$date is not used, you could remove the assignment.

                    continue;
                }
                $this->items[$i]['pubdate'] = @$this->items[$i]['dc']['date'];
            }
        endif;
        parent::normalize();
        /* ATOM */
        if (empty($this->channel['language']) && !empty($this->channel['dc']['language'])) {
            $this->channel['language'] = $this->channel['dc']['language'];
            unset($this->channel['dc']['language']);
        }
        if (empty($this->channel['language'])
            && preg_match('/<link.*hreflang=[\'"](.*?)[\'"].*?>/m', $this->content, $match)) {
            $this->channel['language'] = $match[1];
        }
        if (empty($this->channel['language'])
            && preg_match('/<feed.*xml:lang=[\'"](.*?)[\'"].*?>/m', $this->content, $match)) {
            $this->channel['language'] = $match[1];
        }
        /* remove to avoid redundant encoding conversion */
        if (!empty($this->channel['tagline'])) {
            unset($this->channel['tagline']);
        }

        for ($i = 0, $iMax = count($this->items); $i < $iMax; ++$i) {
            if ($date_timestamp = @$this->items[$i]['date_timestamp']) {

$date_timestamp is not used, you could remove the assignment.

                continue;
            }
            if ($date_timestamp = @$this->items[$i]['pubdate']) {
                $this->items[$i]['date_timestamp'] = $date_timestamp;
            } elseif ($date_timestamp = @$this->items[$i]['dc']['date']) {
                $this->items[$i]['date_timestamp'] = $date_timestamp;
            } else {
                $this->items[$i]['date_timestamp'] = time();
            }
            if (!is_numeric($this->items[$i]['date_timestamp'])) {
                if ($date = parse_w3cdtf($this->items[$i]['date_timestamp'])) {
                    $this->items[$i]['date_timestamp'] = $date;
                } elseif ($date = strtotime($this->items[$i]['date_timestamp'])) {
                    $this->items[$i]['date_timestamp'] = $date;
                }
            }

            /* remove to avoid redundant encoding conversion */
            if (isset($this->items[$i]['summary'])) {
                unset($this->items[$i]['summary']);
            }
            if (isset($this->items[$i]['atom_content'])) {
                unset($this->items[$i]['atom_content']);
            }
        }

        return;
    }

    /**
     * @param array $tags
     */
    public function encoding_convert($tags = [])
    {
        if (empty($tags) || in_array('channel', $tags)) {
            $this->channel = $this->_encoding($this->channel);
        }
        if (empty($tags) || in_array('items', $tags)) {
            $this->items = $this->_encoding($this->items);
        }
    }

    /**
     * @param $val
     * @return array|mixed|string
     */
    public function _encoding($val)
    {
        if (is_array($val)) {
            foreach (array_keys($val) as $key) {
                $val[$key] = $this->_encoding($val[$key]);
            }
        } else {
            $val = XoopsLocal::convert_encoding($val, $this->charset_out, $this->charset_in);
        }

        return $val;
    }
}