first commit

plugins/stRSSPlugin/lib/sfAtom1Feed.class.php

@@ -0,0 +1,168 @@
+<?php
+/**
+ * @package    stRSSPlugin
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ * @version    SVN: $Id: sfAtom1Feed.class.php 2092 2008-11-18 19:28:41Z michal $
+ */
+class sfAtom1Feed extends sfFeed
+{
+  public function getFeed()
+  {
+    header('Content-Type: application/atom+xml');
+
+    $xml = array();
+    $xml[] = '<?xml version="1.0" encoding="'.$this->getEncoding().'" ?>';
+
+    if ($this->getLanguage())
+    {
+      $xml[] = sprintf('<feed xmlns="%s" xml:lang="%s">', 'http://www.w3.org/2005/Atom', $this->getLanguage());
+    }
+    else
+    {
+      $xml[] = sprintf('<feed xmlns="%s">', 'http://www.w3.org/2005/Atom');
+    }
+
+    $xml[] = '  <title>'.$this->getTitle().'</title>';
+    $xml[] = '  <link rel="alternate" href="'.sfContext::getInstance()->getController()->genUrl($this->getLink(), true).'"></link>';
+    if ($this->getFeedUrl())
+    {
+      $xml[] = '  <link rel="self" href="'.sfContext::getInstance()->getController()->genUrl($this->getFeedUrl(), true).'"></link>';
+    }
+    $xml[] = '  <id>'.sfContext::getInstance()->getController()->genUrl($this->getLink(), true).'</id>';
+    $xml[] = '  <updated>'.strftime('%Y-%m-%dT%H:%M:%SZ', $this->getLatestPostDate()).'</updated>';
+
+    if ($this->getAuthorName())
+    {
+      $xml[] = '  <author>';
+      $xml[] = '    <name>'.$this->getAuthorName().'</name>';
+      if ($this->getAuthorEmail())
+      {
+        $xml[] = '    <author_email>'.$this->getAuthorEmail().'</author_email>';
+      }
+      if ($this->getAuthorLink())
+      {
+        $xml[] = '    <author_link>'.$this->getAuthorLink().'</author_link>';
+      }
+      $xml[] = '  </author>';
+    }
+
+    if ($this->getSubtitle())
+    {
+      $xml[] = '  <subtitle>'.$this->getSubtitle().'</subtitle>';
+    }
+
+    foreach ($this->getCategories() as $category)
+    {
+      $xml[] = '  <category term="'.$category.'"></category>';
+    }
+
+    $xml[] = $this->getFeedElements();
+
+    $xml[] = '</feed>';
+
+    return implode("\n", $xml);
+  }
+
+  private function getFeedElements()
+  {
+    $xml = array();
+
+    foreach ($this->getItems() as $item)
+    {
+      $xml[] = '<entry>';
+      $xml[] = '  <title>'.htmlspecialchars($this->getItemFeedTitle($item)).'</title>';
+      $xml[] = '  <link rel="alternate" href="'.sfContext::getInstance()->getController()->genUrl($this->getItemFeedLink($item), true).'"></link>';
+      if ($this->getItemFeedPubdate($item))
+      {
+        $xml[] = '  <updated>'.strftime('%Y-%m-%dT%H:%M:%SZ', $this->getItemFeedPubdate($item)).'</updated>';
+      }
+
+      // author information
+      if ($this->getItemFeedAuthorName($item))
+      {
+        $xml[] = '  <author>';
+        $xml[] = '    <name>'.$this->getItemFeedAuthorName($item).'</name>';
+        if ($this->getItemFeedAuthorEmail($item))
+        {
+          $xml[] = '    <author_email>'.$this->getItemFeedAuthorEmail($item).'</author_email>';
+        }
+        if ($this->getItemFeedAuthorLink($item))
+        {
+          $xml[] = '    <author_link>'.sfContext::getInstance()->getController()->genUrl($this->getItemFeedAuthorLink($item), true).'</author_link>';
+        }
+        $xml[] = '  </author>';
+      }
+
+      // unique id
+      if ($this->getItemFeedUniqueId($item))
+      {
+        $uniqueId = $this->getItemFeedUniqueId($item);
+      }
+      else
+      {
+        $uniqueId = $this->getTagUri($this->getItemFeedLink($item), $this->getItemFeedPubdate($item));
+      }
+      $xml[] = '  <id>'.$uniqueId.'</id>';
+
+      // summary
+      if ($this->getItemFeedDescription($item))
+      {
+        $xml[] = sprintf('  <summary type="html">%s</summary>', htmlspecialchars($this->getItemFeedDescription($item)));
+      }
+
+      // enclosure
+      if ((method_exists($item, 'getFeedEnclosure')) && ($enclosure = $item->getFeedEnclosure()))
+      {
+        $xml[] = sprintf('  <link rel="enclosure" href="%s" length="%s" type="%s"></link>', $enclosure->getUrl(), $enclosure->getLength(), $enclosure->getMimeType());
+      }
+
+      // categories
+      foreach ($this->getItemFeedCategories($item) as $category)
+      {
+        $xml[] = '  <category term="'.$category.'"></category>';
+      }
+
+      $xml[] = '</entry>';
+    }
+
+    return implode("\n", $xml);
+  }
+
+  // Creates a TagURI. See http://diveintomark.org/archives/2004/05/28/howto-atom-id
+  private function getTagUri($url, $date)
+  {
+    $tag = preg_replace('#^http\://#', '', $url);
+    if ($date)
+    {
+      $tag = preg_replace('#/#', ','.strftime('%Y-%m-%d', $date).':/', $tag, 1);
+    }
+    $tag = preg_replace('/#/', '/', $tag);
+
+    return 'tag:'.$tag;
+  }
+
+  private function getLatestPostDate()
+  {
+    $updates = array();
+    foreach ($this->getItems() as $item)
+    {
+      if ($this->getItemFeedPubdate($item))
+      {
+        $updates[] = $this->getItemFeedPubdate($item);
+      }
+    }
+
+    if ($updates)
+    {
+      sort($updates);
+      return $updates[count($updates) - 1];
+    }
+    else
+    {
+      return time();
+    }
+  }
+
+}
+
+?>