XHTMLCompiler/RSSFeed.php

   1 <?php
   2
   3 /**
   4  * Representation of an RSS feed, convenience wrapper for quick building
   5  */
   6 class XHTMLCompiler_RSSFeed
   7 {
   8
   9     /** Internal DOM that represents the feed */
  10     protected $doc;
  11
  12     /** Convenient reference to channel node in $this->doc */
  13     protected $channel;
  14
  15     /**
  16      * @param $title Title of the feed
  17      * @param $path Fully-formed webpath to feed
  18      * @param $description Optional description of feed
  19      * @param $lang Optional language of feed
  20      */
  21     public function __construct($title, $path, $description = null, $lang = null) {
  22         $this->doc = new DOMDocument('1.0', 'UTF-8');
  23         $this->doc->formatOutput = true;
  24
  25         $rss = $this->doc->createElement('rss');
  26         $rss->setAttribute('version', '2.0');
  27         $this->doc->appendChild($rss);
  28
  29         $channel = $this->doc->createElement('channel');
  30         $rss->appendChild($channel);
  31
  32         $channel->appendChild($this->doc->createElement('title', $title));
  33         $channel->appendChild($this->doc->createElement('link', $path));
  34         if ($lang) {
  35             $channel->appendChild(
  36                 $this->doc->createElement('language', $lang)
  37             );
  38         }
  39         if ($description) {
  40             $channel->appendChild(
  41                 $this->doc->createElement('description', $description)
  42             );
  43         }
  44         $channel->appendChild(
  45             $this->doc->createElement('generator', 'XHTML Compiler')
  46         );
  47
  48         $this->channel = $channel;
  49     }
  50
  51     /**
  52      * Adds a news item to the RSS feed
  53      * @param $link Link to relevant article
  54      * @param $title Title of the news item
  55      * @param $date Date of the article
  56      * @param $body Short description of article
  57      */
  58     public function addItem($link, $title, $date, $body) {
  59         $item = $this->doc->createElement('item');
  60         $this->channel->appendChild($item);
  61
  62         $body = preg_replace("/\s+/", ' ', $body);
  63
  64         if ($title) $item->appendChild($this->doc->createElement('title', htmlspecialchars($title)));
  65         $item->appendChild($this->doc->createElement('pubDate', $date));
  66         $item->appendChild($this->doc->createElement('description', htmlspecialchars($body)));
  67         $item->appendChild($this->doc->createElement('link', htmlspecialchars($link)));
  68     }
  69
  70     /**
  71      * Saves RSS feed to path
  72      * @param $path Path to save feed to
  73      */
  74     public function save($path) {
  75         $this->doc->save($path);
  76         chmod($path, 0644);
  77     }
  78
  79 }