Upgrade to KH 3.3.0
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Deon George
185
includes/kohana/system/classes/Kohana/Feed.php
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185
includes/kohana/system/classes/Kohana/Feed.php
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<?php defined('SYSPATH') OR die('No direct script access.');
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/**
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* RSS and Atom feed helper.
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*
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* @package Kohana
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* @category Helpers
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* @author Kohana Team
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* @copyright (c) 2007-2012 Kohana Team
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* @license http://kohanaframework.org/license
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*/
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class Kohana_Feed {
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/**
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* Parses a remote feed into an array.
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*
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* @param string $feed remote feed URL
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* @param integer $limit item limit to fetch
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* @return array
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*/
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public static function parse($feed, $limit = 0)
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{
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// Check if SimpleXML is installed
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if ( ! function_exists('simplexml_load_file'))
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throw new Kohana_Exception('SimpleXML must be installed!');
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// Make limit an integer
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$limit = (int) $limit;
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// Disable error reporting while opening the feed
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$error_level = error_reporting(0);
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// Allow loading by filename or raw XML string
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if (Valid::url($feed))
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{
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// Use native Request client to get remote contents
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$response = Request::factory($feed)->execute();
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$feed = $response->body();
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}
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elseif (is_file($feed))
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{
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// Get file contents
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$feed = file_get_contents($feed);
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}
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// Load the feed
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$feed = simplexml_load_string($feed, 'SimpleXMLElement', LIBXML_NOCDATA);
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// Restore error reporting
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error_reporting($error_level);
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// Feed could not be loaded
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if ($feed === FALSE)
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return array();
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$namespaces = $feed->getNamespaces(TRUE);
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// Detect the feed type. RSS 1.0/2.0 and Atom 1.0 are supported.
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$feed = isset($feed->channel) ? $feed->xpath('//item') : $feed->entry;
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$i = 0;
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$items = array();
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foreach ($feed as $item)
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{
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if ($limit > 0 AND $i++ === $limit)
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break;
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$item_fields = (array) $item;
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// get namespaced tags
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foreach ($namespaces as $ns)
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{
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$item_fields += (array) $item->children($ns);
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}
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$items[] = $item_fields;
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}
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return $items;
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}
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/**
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* Creates a feed from the given parameters.
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*
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* @param array $info feed information
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* @param array $items items to add to the feed
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* @param string $encoding define which encoding to use
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* @return string
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*/
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public static function create($info, $items, $encoding = 'UTF-8')
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{
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$info += array('title' => 'Generated Feed', 'link' => '', 'generator' => 'KohanaPHP');
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$feed = '<?xml version="1.0" encoding="'.$encoding.'"?><rss version="2.0"><channel></channel></rss>';
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$feed = simplexml_load_string($feed);
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foreach ($info as $name => $value)
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{
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if ($name === 'image')
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{
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// Create an image element
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$image = $feed->channel->addChild('image');
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if ( ! isset($value['link'], $value['url'], $value['title']))
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{
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throw new Kohana_Exception('Feed images require a link, url, and title');
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}
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if (strpos($value['link'], '://') === FALSE)
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{
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// Convert URIs to URLs
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$value['link'] = URL::site($value['link'], 'http');
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}
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if (strpos($value['url'], '://') === FALSE)
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{
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// Convert URIs to URLs
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$value['url'] = URL::site($value['url'], 'http');
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}
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// Create the image elements
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$image->addChild('link', $value['link']);
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$image->addChild('url', $value['url']);
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$image->addChild('title', $value['title']);
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}
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else
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{
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if (($name === 'pubDate' OR $name === 'lastBuildDate') AND (is_int($value) OR ctype_digit($value)))
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{
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// Convert timestamps to RFC 822 formatted dates
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$value = date('r', $value);
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}
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elseif (($name === 'link' OR $name === 'docs') AND strpos($value, '://') === FALSE)
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{
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// Convert URIs to URLs
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$value = URL::site($value, 'http');
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}
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// Add the info to the channel
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$feed->channel->addChild($name, $value);
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}
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}
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foreach ($items as $item)
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{
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// Add the item to the channel
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$row = $feed->channel->addChild('item');
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foreach ($item as $name => $value)
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{
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if ($name === 'pubDate' AND (is_int($value) OR ctype_digit($value)))
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{
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// Convert timestamps to RFC 822 formatted dates
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$value = date('r', $value);
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}
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elseif (($name === 'link' OR $name === 'guid') AND strpos($value, '://') === FALSE)
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{
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// Convert URIs to URLs
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$value = URL::site($value, 'http');
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}
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// Add the info to the row
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$row->addChild($name, $value);
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}
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}
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if (function_exists('dom_import_simplexml'))
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{
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// Convert the feed object to a DOM object
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$feed = dom_import_simplexml($feed)->ownerDocument;
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// DOM generates more readable XML
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$feed->formatOutput = TRUE;
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// Export the document as XML
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$feed = $feed->saveXML();
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}
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else
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{
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// Export the document as XML
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$feed = $feed->asXML();
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}
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return $feed;
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}
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} // End Feed
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