From 3413fe6bfd423d45d083ff4ed62c0f72c2cc272f Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Thu, 28 May 2009 06:11:53 +0800
Subject: Rename 'kohana' to 'system' to conform to the Kohana filesystem
 layout.  I'm comfortable with us not clearly drawing the distinction about
 the fact that it's Kohana.

Signed-off-by: Gallery Role Account <gallery@menalto.com>
---
 system/helpers/feed.php | 122 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 system/helpers/feed.php

(limited to 'system/helpers/feed.php')

diff --git a/system/helpers/feed.php b/system/helpers/feed.php
new file mode 100644
index 00000000..74bb2f6b
--- /dev/null
+++ b/system/helpers/feed.php
@@ -0,0 +1,122 @@
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Feed helper class.
+ *
+ * $Id: feed.php 4152 2009-04-03 23:26:23Z ixmatus $
+ *
+ * @package    Core
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+class feed_Core {
+
+	/**
+	 * Parses a remote feed into an array.
+	 *
+	 * @param   string   remote feed URL
+	 * @param   integer  item limit to fetch
+	 * @return  array
+	 */
+	public static function parse($feed, $limit = 0)
+	{
+		// Check if SimpleXML is installed
+		if( ! function_exists('simplexml_load_file'))
+			throw new Kohana_User_Exception('Feed Error', 'SimpleXML must be installed!');
+		
+		// Make limit an integer
+		$limit = (int) $limit;
+
+		// Disable error reporting while opening the feed
+		$ER = error_reporting(0);
+
+		// Allow loading by filename or raw XML string
+		$load = (is_file($feed) OR valid::url($feed)) ? 'simplexml_load_file' : 'simplexml_load_string';
+
+		// Load the feed
+		$feed = $load($feed, 'SimpleXMLElement', LIBXML_NOCDATA);
+
+		// Restore error reporting
+		error_reporting($ER);
+
+		// Feed could not be loaded
+		if ($feed === FALSE)
+			return array();
+
+		// Detect the feed type. RSS 1.0/2.0 and Atom 1.0 are supported.
+		$feed = isset($feed->channel) ? $feed->xpath('//item') : $feed->entry;
+
+		$i = 0;
+		$items = array();
+
+		foreach ($feed as $item)
+		{
+			if ($limit > 0 AND $i++ === $limit)
+				break;
+
+			$items[] = (array) $item;
+		}
+
+		return $items;
+	}
+
+	/**
+	 * Creates a feed from the given parameters.
+	 *
+	 * @param   array   feed information
+	 * @param   array   items to add to the feed
+	 * @param   string  define which format to use
+	 * @param   string  define which encoding to use
+	 * @return  string
+	 */
+	public static function create($info, $items, $format = 'rss2', $encoding = 'UTF-8')
+	{
+		$info += array('title' => 'Generated Feed', 'link' => '', 'generator' => 'KohanaPHP');
+
+		$feed = '<?xml version="1.0" encoding="'.$encoding.'"?><rss version="2.0"><channel></channel></rss>';
+		$feed = simplexml_load_string($feed);
+
+		foreach ($info as $name => $value)
+		{
+			if (($name === 'pubDate' OR $name === 'lastBuildDate') AND (is_int($value) OR ctype_digit($value)))
+			{
+				// Convert timestamps to RFC 822 formatted dates
+				$value = date(DATE_RFC822, $value);
+			}
+			elseif (($name === 'link' OR $name === 'docs') AND strpos($value, '://') === FALSE)
+			{
+				// Convert URIs to URLs
+				$value = url::site($value, 'http');
+			}
+
+			// Add the info to the channel
+			$feed->channel->addChild($name, $value);
+		}
+
+		foreach ($items as $item)
+		{
+			// Add the item to the channel
+			$row = $feed->channel->addChild('item');
+
+			foreach ($item as $name => $value)
+			{
+				if ($name === 'pubDate' AND (is_int($value) OR ctype_digit($value)))
+				{
+					// Convert timestamps to RFC 822 formatted dates
+					$value = date(DATE_RFC822, $value);
+				}
+				elseif (($name === 'link' OR $name === 'guid') AND strpos($value, '://') === FALSE)
+				{
+					// Convert URIs to URLs
+					$value = url::site($value, 'http');
+				}
+
+				// Add the info to the row
+				$row->addChild($name, $value);
+			}
+		}
+
+		return $feed->asXML();
+	}
+
+} // End feed
\ No newline at end of file
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