Error: %d

<?php
/**
 * Content component: RssFeeder
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage content
 */

/**
 * Load required class
 */
WBClass::load( 'WBContent'
            , 'WBCache'
            , 'WBStream' );

/**
 * Content component: RssFeeder
 *
 * Deliver blog roll as RSS feed
 *
 * @version 0.1.0
 * @package WB
 * @subpackage content
 */
class WBContent_RssFeeder extends WBContent
{
   /**
    * my parameter list
    * @var array
    */
    protected $config = array(
            'listurl'       =>  'http://[[SERVER]][[SERVICE_HTML]]blog',
            'articleurl'    =>  'http://[[SERVER]][[SERVICE_HTML]]blog/%s/%s',
            'category'      =>  '',
            'limit'         =>  20,
            'ttl'           =>  3600,
            'title'         =>  'Blog RSS Feed',
            'brief'         =>  'Automatically created RSS feed for this weblog.'
        );

    /**
     * use this XML snippet if everything else fails
     */
    const XML_FRAME   =   '<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0">
    <channel>
        <ttl>60</ttl>
        <link>http://example.com/</link>
        <title>Error: %d</title>
        <description>Failed to build RSS feed! %s</description>
    </channel>
</rss>
';

   /**
    * channel data
    * @var array
    */
    protected $channel = array();

    /**
     * 2nd constructor
     *
     *
     */
    protected function init()
    {
        $this->table    =   WBClass::create('WBDatasource_Table');

        $this->blogConfig   =   WBClass::create('WBConfig');
        $this->blogConfig->load('blog/config');

        $this->scanner  =   wBClass::Create('WBMarkup_Scanner');
        $this->handler  =   wBClass::Create('WBMarkup_Handler_Xml2Html');
        $this->scanner->setHandler($this->handler);
    }

   /**
    * run
    *
    * run component
    *
    * @todo remove wget hack!
    * @return array parameter list
    */
    public function run()
    {
        $this->channel  =   array(
                        'ttl'           =>  $this->config['ttl'],
                        'link'          =>  $this->config['listurl'],
                        'title'         =>  $this->config['title'],
                        'description'   =>  $this->config['brief']
        );

        $clause     =   array();
        $clause[]   =   array(
                            'field'     =>  'published',
                            'value'     =>  1
                        );
        $clause[]   =   array(
                            'field'     =>  'created',
                            'relation'  =>  'le',
                            'value'     =>  gmdate('Y-m-d H:i:s')
                        );
        if (!empty($this->config['category'])) {
            if (!is_array($this->config['category'])) {
                $this->config['category']   =   array($this->config['category']);
            }
            $clause[]   =   array(
                                'field'     =>  $this->table->getIdentifier('blogcategory'),
                                'relation'  =>  'in',
                                'value'     =>  $this->config['category']
                            );
        }

        $options            =   array();
        $options['limit']   =   $this->config['limit'];
        $options['order']   =   array(
                                    array(
                                        'field' =>  'created',
                                        'asc'   =>  0
                                        )
                                );
        $list   =   $this->table->get('blog', null, null, $clause, $options );
        $uid    =   $this->table->getIdentifier('user');
        foreach ($list as $l) {
            // publish date
            $time   =   strtotime($l['created']);

            // author
            $user   =   $this->table->get('user', $l[$uid]);
            $user   =   $user[0];

            // body
            $this->scanner->scan($l['body']);
            $body   =   $this->handler->getParsedContent();

            // item
            $item   =   array(
                            'title'         =>  $l['title'],
                            'description'   =>  $body,
                            'author'        =>  sprintf('%s %s', $user['forename'], $user['surname']),
                            'guid'          =>  sprintf('[[SERVER]][[DOCROOT]]/blog/%s', $l['id']),
                            'link'          =>  sprintf($this->config['articleurl'], date('Y-m-d', $time), urlencode($l['title'])),
                            'pubDate'       =>  date('d M Y h:i:s', $time) . ' GMT',
                            //'dc:creator'    =>  sprintf('%s %s', $user['forename'], $user['surname']),
                            //'dc:date'       =>  date('Y-m-dTh:i:s', $time),
                            );
            $this->channel[]    =   $item;
        }

        return $this->config;
    }

   /**
    * receive output
    *
    * fetch output of this content component
    *
    * @return string
    */
    public function getString()
    {
        $res        =   WBClass::create('WBResponse');
        /** @var $res WBResponse */

        $content    =   $this->serialize();
        $res->add($content);

        $res->addHeader('Content-Type', 'text/xml; charset=utf-8;');
        $res->send($this->req);

        exit(0);
    }

    /**
     * serialize to XML
     *
     * Serialize response array to XML string
     *
     * @param int $status HTTP status code
     * @param artray $response
     * @return string
     */
    protected function serialize()
    {
        $channel    =   array('channel' => $this->channel);

        WBClass::load('XML_Serializer');
        $opts   =   array(
                            XML_SERIALIZER_OPTION_ROOT_NAME         =>  'rss',
                            XML_SERIALIZER_OPTION_ROOT_ATTRIBS      =>  array(
                                                                            'version'   =>  '2.0'
                                                                        ),
                            XML_SERIALIZER_OPTION_LINEBREAKS        =>  "\n",
                            XML_SERIALIZER_OPTION_INDENT            =>  '',
                            XML_SERIALIZER_OPTION_DEFAULT_TAG       =>  'item',
                            XML_SERIALIZER_OPTION_XML_DECL_ENABLED  =>  true,
                            XML_SERIALIZER_OPTION_XML_ENCODING      =>  'utf-8',
                            XML_SERIALIZER_OPTION_INDENT            =>  '  '
                            /*
                            XML_SERIALIZER_OPTION_DOCTYPE_ENABLED   =>  true,
                            XML_SERIALIZER_OPTION_DOCTYPE           =>  array(
                                                                            'uri'   =>  'http://xml.wombat.exit0.net/rest',
                                                                            'id'    =>  'Wombat REST 1.0'
                                                                        )
                            */
                        );
        $ser    =   new XML_Serializer($opts);
        $result =   $ser->serialize($channel);
        if (PEAR::isError($result)) {
            return sprintf(self::XML_FRAME, 6, 'Failed to build xml response');
        }

        return $ser->getSerializedData();
    }

}
?>