Source of file FeedSet.php
Size: 4,122 Bytes - Last Modified: 2014-03-12T23:21:18+01:00
/home/theseer/Downloads/ZendFramework-2.3.0/library/Zend/Feed/Reader/FeedSet.php
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128 | <?php /** * Zend Framework (http://framework.zend.com/) * * @link http://github.com/zendframework/zf2 for the canonical source repository * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ namespace Zend\Feed\Reader; use ArrayObject; use DOMNodeList; use Zend\Feed\Uri; /** */ class FeedSet extends ArrayObject { public $rss = null; public $rdf = null; public $atom = null; /** * Import a DOMNodeList from any document containing a set of links * for alternate versions of a document, which will normally refer to * RSS/RDF/Atom feeds for the current document. * * All such links are stored internally, however the first instance of * each RSS, RDF or Atom type has its URI stored as a public property * as a shortcut where the use case is simply to get a quick feed ref. * * Note that feeds are not loaded at this point, but will be lazy * loaded automatically when each links 'feed' array key is accessed. * * @param DOMNodeList $links * @param string $uri * @return void */ public function addLinks(DOMNodeList $links, $uri) { foreach ($links as $link) { if (strtolower($link->getAttribute('rel')) !== 'alternate' || !$link->getAttribute('type') || !$link->getAttribute('href')) { continue; } if (!isset($this->rss) && $link->getAttribute('type') == 'application/rss+xml') { $this->rss = $this->absolutiseUri(trim($link->getAttribute('href')), $uri); } elseif (!isset($this->atom) && $link->getAttribute('type') == 'application/atom+xml') { $this->atom = $this->absolutiseUri(trim($link->getAttribute('href')), $uri); } elseif (!isset($this->rdf) && $link->getAttribute('type') == 'application/rdf+xml') { $this->rdf = $this->absolutiseUri(trim($link->getAttribute('href')), $uri); } $this[] = new static(array( 'rel' => 'alternate', 'type' => $link->getAttribute('type'), 'href' => $this->absolutiseUri(trim($link->getAttribute('href')), $uri), )); } } /** * Attempt to turn a relative URI into an absolute URI */ protected function absolutiseUri($link, $uri = null) { $linkUri = Uri::factory($link); if (!$linkUri->isAbsolute() or !$linkUri->isValid()) { if ($uri !== null) { $uri = Uri::factory($uri); if ($link[0] !== '/') { $link = $uri->getPath() . '/' . $link; } $link = $uri->getScheme() . '://' . $uri->getHost() . '/' . $this->canonicalizePath($link); if (!Uri::factory($link)->isValid()) { $link = null; } } } return $link; } /** * Canonicalize relative path */ protected function canonicalizePath($path) { $parts = array_filter(explode('/', $path)); $absolutes = array(); foreach ($parts as $part) { if ('.' == $part) { continue; } if ('..' == $part) { array_pop($absolutes); } else { $absolutes[] = $part; } } return implode('/', $absolutes); } /** * Supports lazy loading of feeds using Reader::import() but * delegates any other operations to the parent class. * * @param string $offset * @return mixed */ public function offsetGet($offset) { if ($offset == 'feed' && !$this->offsetExists('feed')) { if (!$this->offsetExists('href')) { return null; } $feed = Reader::import($this->offsetGet('href')); $this->offsetSet('feed', $feed); return $feed; } return parent::offsetGet($offset); } } |