getAuthors(); if (isset($authors[$index])) { return $authors[$index]; } return null; } /** * Get an array with feed authors * * @return Collection\Author */ public function getAuthors() { if (array_key_exists('authors', $this->data)) { return $this->data['authors']; } $authors = array(); $list = $this->getXpath()->query($this->getXpathPrefix() . '//atom:author'); if (!$list->length) { /** * TODO: Limit query to feed level els only! */ $list = $this->getXpath()->query('//atom:author'); } if ($list->length) { foreach ($list as $author) { $author = $this->getAuthorFromElement($author); if (!empty($author)) { $authors[] = $author; } } } if (count($authors) == 0) { $authors = new Collection\Author(); } else { $authors = new Collection\Author( Reader\Reader::arrayUnique($authors) ); } $this->data['authors'] = $authors; return $this->data['authors']; } /** * Get the entry content * * @return string */ public function getContent() { if (array_key_exists('content', $this->data)) { return $this->data['content']; } $content = null; $el = $this->getXpath()->query($this->getXpathPrefix() . '/atom:content'); if ($el->length > 0) { $el = $el->item(0); $type = $el->getAttribute('type'); switch ($type) { case '': case 'text': case 'text/plain': case 'html': case 'text/html': $content = $el->nodeValue; break; case 'xhtml': $this->getXpath()->registerNamespace('xhtml', 'http://www.w3.org/1999/xhtml'); $xhtml = $this->getXpath()->query( $this->getXpathPrefix() . '/atom:content/xhtml:div' )->item(0); $d = new DOMDocument('1.0', $this->getEncoding()); $xhtmls = $d->importNode($xhtml, true); $d->appendChild($xhtmls); $content = $this->collectXhtml( $d->saveXML(), $d->lookupPrefix('http://www.w3.org/1999/xhtml') ); break; } } if (!$content) { $content = $this->getDescription(); } $this->data['content'] = trim($content); return $this->data['content']; } /** * Parse out XHTML to remove the namespacing * * @param $xhtml * @param $prefix * @return mixed */ protected function collectXhtml($xhtml, $prefix) { if (!empty($prefix)) $prefix = $prefix . ':'; $matches = array( "/<\?xml[^<]*>[^<]*<" . $prefix . "div[^<]*/", "/<\/" . $prefix . "div>\s*$/" ); $xhtml = preg_replace($matches, '', $xhtml); if (!empty($prefix)) { $xhtml = preg_replace("/(<[\/]?)" . $prefix . "([a-zA-Z]+)/", '$1$2', $xhtml); } return $xhtml; } /** * Get the entry creation date * * @return string */ public function getDateCreated() { if (array_key_exists('datecreated', $this->data)) { return $this->data['datecreated']; } $date = null; if ($this->getAtomType() === Reader\Reader::TYPE_ATOM_03) { $dateCreated = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:created)'); } else { $dateCreated = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:published)'); } if ($dateCreated) { $date = new DateTime($dateCreated); } $this->data['datecreated'] = $date; return $this->data['datecreated']; } /** * Get the entry modification date * * @return string */ public function getDateModified() { if (array_key_exists('datemodified', $this->data)) { return $this->data['datemodified']; } $date = null; if ($this->getAtomType() === Reader\Reader::TYPE_ATOM_03) { $dateModified = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:modified)'); } else { $dateModified = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:updated)'); } if ($dateModified) { $date = new DateTime($dateModified); } $this->data['datemodified'] = $date; return $this->data['datemodified']; } /** * Get the entry description * * @return string */ public function getDescription() { if (array_key_exists('description', $this->data)) { return $this->data['description']; } $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:summary)'); if (!$description) { $description = null; } $this->data['description'] = $description; return $this->data['description']; } /** * Get the entry enclosure * * @return string */ public function getEnclosure() { if (array_key_exists('enclosure', $this->data)) { return $this->data['enclosure']; } $enclosure = null; $nodeList = $this->getXpath()->query($this->getXpathPrefix() . '/atom:link[@rel="enclosure"]'); if ($nodeList->length > 0) { $enclosure = new stdClass(); $enclosure->url = $nodeList->item(0)->getAttribute('href'); $enclosure->length = $nodeList->item(0)->getAttribute('length'); $enclosure->type = $nodeList->item(0)->getAttribute('type'); } $this->data['enclosure'] = $enclosure; return $this->data['enclosure']; } /** * Get the entry ID * * @return string */ public function getId() { if (array_key_exists('id', $this->data)) { return $this->data['id']; } $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:id)'); if (!$id) { if ($this->getPermalink()) { $id = $this->getPermalink(); } elseif ($this->getTitle()) { $id = $this->getTitle(); } else { $id = null; } } $this->data['id'] = $id; return $this->data['id']; } /** * Get the base URI of the feed (if set). * * @return string|null */ public function getBaseUrl() { if (array_key_exists('baseUrl', $this->data)) { return $this->data['baseUrl']; } $baseUrl = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/@xml:base[1]' . ')'); if (!$baseUrl) { $baseUrl = $this->getXpath()->evaluate('string(//@xml:base[1])'); } if (!$baseUrl) { $baseUrl = null; } $this->data['baseUrl'] = $baseUrl; return $this->data['baseUrl']; } /** * Get a specific link * * @param int $index * @return string */ public function getLink($index = 0) { if (!array_key_exists('links', $this->data)) { $this->getLinks(); } if (isset($this->data['links'][$index])) { return $this->data['links'][$index]; } return null; } /** * Get all links * * @return array */ public function getLinks() { if (array_key_exists('links', $this->data)) { return $this->data['links']; } $links = array(); $list = $this->getXpath()->query( $this->getXpathPrefix() . '//atom:link[@rel="alternate"]/@href' . '|' . $this->getXpathPrefix() . '//atom:link[not(@rel)]/@href' ); if ($list->length) { foreach ($list as $link) { $links[] = $this->absolutiseUri($link->value); } } $this->data['links'] = $links; return $this->data['links']; } /** * Get a permalink to the entry * * @return string */ public function getPermalink() { return $this->getLink(0); } /** * Get the entry title * * @return string */ public function getTitle() { if (array_key_exists('title', $this->data)) { return $this->data['title']; } $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:title)'); if (!$title) { $title = null; } $this->data['title'] = $title; return $this->data['title']; } /** * Get the number of comments/replies for current entry * * @return int */ public function getCommentCount() { if (array_key_exists('commentcount', $this->data)) { return $this->data['commentcount']; } $count = null; $this->getXpath()->registerNamespace('thread10', 'http://purl.org/syndication/thread/1.0'); $list = $this->getXpath()->query( $this->getXpathPrefix() . '//atom:link[@rel="replies"]/@thread10:count' ); if ($list->length) { $count = $list->item(0)->value; } $this->data['commentcount'] = $count; return $this->data['commentcount']; } /** * Returns a URI pointing to the HTML page where comments can be made on this entry * * @return string */ public function getCommentLink() { if (array_key_exists('commentlink', $this->data)) { return $this->data['commentlink']; } $link = null; $list = $this->getXpath()->query( $this->getXpathPrefix() . '//atom:link[@rel="replies" and @type="text/html"]/@href' ); if ($list->length) { $link = $list->item(0)->value; $link = $this->absolutiseUri($link); } $this->data['commentlink'] = $link; return $this->data['commentlink']; } /** * Returns a URI pointing to a feed of all comments for this entry * * @param string $type * @return string */ public function getCommentFeedLink($type = 'atom') { if (array_key_exists('commentfeedlink', $this->data)) { return $this->data['commentfeedlink']; } $link = null; $list = $this->getXpath()->query( $this->getXpathPrefix() . '//atom:link[@rel="replies" and @type="application/' . $type.'+xml"]/@href' ); if ($list->length) { $link = $list->item(0)->value; $link = $this->absolutiseUri($link); } $this->data['commentfeedlink'] = $link; return $this->data['commentfeedlink']; } /** * Get all categories * * @return Collection\Category */ public function getCategories() { if (array_key_exists('categories', $this->data)) { return $this->data['categories']; } if ($this->getAtomType() == Reader\Reader::TYPE_ATOM_10) { $list = $this->getXpath()->query($this->getXpathPrefix() . '//atom:category'); } else { /** * Since Atom 0.3 did not support categories, it would have used the * Dublin Core extension. However there is a small possibility Atom 0.3 * may have been retrofitted to use Atom 1.0 instead. */ $this->getXpath()->registerNamespace('atom10', Reader\Reader::NAMESPACE_ATOM_10); $list = $this->getXpath()->query($this->getXpathPrefix() . '//atom10:category'); } if ($list->length) { $categoryCollection = new Collection\Category; foreach ($list as $category) { $categoryCollection[] = array( 'term' => $category->getAttribute('term'), 'scheme' => $category->getAttribute('scheme'), 'label' => $category->getAttribute('label') ); } } else { return new Collection\Category; } $this->data['categories'] = $categoryCollection; return $this->data['categories']; } /** * Get source feed metadata from the entry * * @return Reader\Feed\Atom\Source|null */ public function getSource() { if (array_key_exists('source', $this->data)) { return $this->data['source']; } $source = null; // TODO: Investigate why _getAtomType() fails here. Is it even needed? if ($this->getType() == Reader\Reader::TYPE_ATOM_10) { $list = $this->getXpath()->query($this->getXpathPrefix() . '/atom:source[1]'); if ($list->length) { $element = $list->item(0); $source = new Reader\Feed\Atom\Source($element, $this->getXpathPrefix()); } } $this->data['source'] = $source; return $this->data['source']; } /** * Attempt to absolutise the URI, i.e. if a relative URI apply the * xml:base value as a prefix to turn into an absolute URI. * * @param $link * @return string */ protected function absolutiseUri($link) { if (!Uri::factory($link)->isAbsolute()) { if ($this->getBaseUrl() !== null) { $link = $this->getBaseUrl() . $link; if (!Uri::factory($link)->isValid()) { $link = null; } } } return $link; } /** * Get an author entry * * @param DOMElement $element * @return string */ protected function getAuthorFromElement(DOMElement $element) { $author = array(); $emailNode = $element->getElementsByTagName('email'); $nameNode = $element->getElementsByTagName('name'); $uriNode = $element->getElementsByTagName('uri'); if ($emailNode->length && strlen($emailNode->item(0)->nodeValue) > 0) { $author['email'] = $emailNode->item(0)->nodeValue; } if ($nameNode->length && strlen($nameNode->item(0)->nodeValue) > 0) { $author['name'] = $nameNode->item(0)->nodeValue; } if ($uriNode->length && strlen($uriNode->item(0)->nodeValue) > 0) { $author['uri'] = $uriNode->item(0)->nodeValue; } if (empty($author)) { return null; } return $author; } /** * Register the default namespaces for the current feed format */ protected function registerNamespaces() { switch ($this->getAtomType()) { case Reader\Reader::TYPE_ATOM_03: $this->getXpath()->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_03); break; default: $this->getXpath()->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_10); break; } } /** * Detect the presence of any Atom namespaces in use * * @return string */ protected function getAtomType() { $dom = $this->getDomDocument(); $prefixAtom03 = $dom->lookupPrefix(Reader\Reader::NAMESPACE_ATOM_03); $prefixAtom10 = $dom->lookupPrefix(Reader\Reader::NAMESPACE_ATOM_10); if ($dom->isDefaultNamespace(Reader\Reader::NAMESPACE_ATOM_03) || !empty($prefixAtom03)) { return Reader\Reader::TYPE_ATOM_03; } if ($dom->isDefaultNamespace(Reader\Reader::NAMESPACE_ATOM_10) || !empty($prefixAtom10)) { return Reader\Reader::TYPE_ATOM_10; } } }