Atom.php in Zircon Profile 8

Namespace

Zend\Feed\Writer\Renderer\Entry

File

vendor/zendframework/zend-feed/src/Writer/Renderer/Entry/Atom.php

<?php

/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */
namespace Zend\Feed\Writer\Renderer\Entry;

use DateTime;
use DOMDocument;
use DOMElement;
use Zend\Feed\Uri;
use Zend\Feed\Writer;
use Zend\Feed\Writer\Renderer;
use Zend\Validator;
class Atom extends Renderer\AbstractRenderer implements Renderer\RendererInterface {

  /**
   * Constructor
   *
   * @param  Writer\Entry $container
   */
  public function __construct(Writer\Entry $container) {
    parent::__construct($container);
  }

  /**
   * Render atom entry
   *
   * @return Atom
   */
  public function render() {
    $this->dom = new DOMDocument('1.0', $this->container
      ->getEncoding());
    $this->dom->formatOutput = true;
    $entry = $this->dom
      ->createElementNS(Writer\Writer::NAMESPACE_ATOM_10, 'entry');
    $this->dom
      ->appendChild($entry);
    $this
      ->_setSource($this->dom, $entry);
    $this
      ->_setTitle($this->dom, $entry);
    $this
      ->_setDescription($this->dom, $entry);
    $this
      ->_setDateCreated($this->dom, $entry);
    $this
      ->_setDateModified($this->dom, $entry);
    $this
      ->_setLink($this->dom, $entry);
    $this
      ->_setId($this->dom, $entry);
    $this
      ->_setAuthors($this->dom, $entry);
    $this
      ->_setEnclosure($this->dom, $entry);
    $this
      ->_setContent($this->dom, $entry);
    $this
      ->_setCategories($this->dom, $entry);
    foreach ($this->extensions as $ext) {
      $ext
        ->setType($this
        ->getType());
      $ext
        ->setRootElement($this
        ->getRootElement());
      $ext
        ->setDOMDocument($this
        ->getDOMDocument(), $entry);
      $ext
        ->render();
    }
    return $this;
  }

  /**
   * Set entry title
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   * @throws Writer\Exception\InvalidArgumentException
   */
  protected function _setTitle(DOMDocument $dom, DOMElement $root) {
    if (!$this
      ->getDataContainer()
      ->getTitle()) {
      $message = 'Atom 1.0 entry elements MUST contain exactly one' . ' atom:title element but a title has not been set';
      $exception = new Writer\Exception\InvalidArgumentException($message);
      if (!$this->ignoreExceptions) {
        throw $exception;
      }
      else {
        $this->exceptions[] = $exception;
        return;
      }
    }
    $title = $dom
      ->createElement('title');
    $root
      ->appendChild($title);
    $title
      ->setAttribute('type', 'html');
    $cdata = $dom
      ->createCDATASection($this
      ->getDataContainer()
      ->getTitle());
    $title
      ->appendChild($cdata);
  }

  /**
   * Set entry description
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   */
  protected function _setDescription(DOMDocument $dom, DOMElement $root) {
    if (!$this
      ->getDataContainer()
      ->getDescription()) {
      return;

      // unless src content or base64
    }
    $subtitle = $dom
      ->createElement('summary');
    $root
      ->appendChild($subtitle);
    $subtitle
      ->setAttribute('type', 'html');
    $cdata = $dom
      ->createCDATASection($this
      ->getDataContainer()
      ->getDescription());
    $subtitle
      ->appendChild($cdata);
  }

  /**
   * Set date entry was modified
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   * @throws Writer\Exception\InvalidArgumentException
   */
  protected function _setDateModified(DOMDocument $dom, DOMElement $root) {
    if (!$this
      ->getDataContainer()
      ->getDateModified()) {
      $message = 'Atom 1.0 entry elements MUST contain exactly one' . ' atom:updated element but a modification date has not been set';
      $exception = new Writer\Exception\InvalidArgumentException($message);
      if (!$this->ignoreExceptions) {
        throw $exception;
      }
      else {
        $this->exceptions[] = $exception;
        return;
      }
    }
    $updated = $dom
      ->createElement('updated');
    $root
      ->appendChild($updated);
    $text = $dom
      ->createTextNode($this
      ->getDataContainer()
      ->getDateModified()
      ->format(DateTime::ATOM));
    $updated
      ->appendChild($text);
  }

  /**
   * Set date entry was created
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   */
  protected function _setDateCreated(DOMDocument $dom, DOMElement $root) {
    if (!$this
      ->getDataContainer()
      ->getDateCreated()) {
      return;
    }
    $el = $dom
      ->createElement('published');
    $root
      ->appendChild($el);
    $text = $dom
      ->createTextNode($this
      ->getDataContainer()
      ->getDateCreated()
      ->format(DateTime::ATOM));
    $el
      ->appendChild($text);
  }

  /**
   * Set entry authors
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   */
  protected function _setAuthors(DOMDocument $dom, DOMElement $root) {
    $authors = $this->container
      ->getAuthors();
    if (!$authors || empty($authors)) {

      /**
       * This will actually trigger an Exception at the feed level if
       * a feed level author is not set.
       */
      return;
    }
    foreach ($authors as $data) {
      $author = $this->dom
        ->createElement('author');
      $name = $this->dom
        ->createElement('name');
      $author
        ->appendChild($name);
      $root
        ->appendChild($author);
      $text = $dom
        ->createTextNode($data['name']);
      $name
        ->appendChild($text);
      if (array_key_exists('email', $data)) {
        $email = $this->dom
          ->createElement('email');
        $author
          ->appendChild($email);
        $text = $dom
          ->createTextNode($data['email']);
        $email
          ->appendChild($text);
      }
      if (array_key_exists('uri', $data)) {
        $uri = $this->dom
          ->createElement('uri');
        $author
          ->appendChild($uri);
        $text = $dom
          ->createTextNode($data['uri']);
        $uri
          ->appendChild($text);
      }
    }
  }

  /**
   * Set entry enclosure
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   */
  protected function _setEnclosure(DOMDocument $dom, DOMElement $root) {
    $data = $this->container
      ->getEnclosure();
    if (!$data || empty($data)) {
      return;
    }
    $enclosure = $this->dom
      ->createElement('link');
    $enclosure
      ->setAttribute('rel', 'enclosure');
    if (isset($data['type'])) {
      $enclosure
        ->setAttribute('type', $data['type']);
    }
    if (isset($data['length'])) {
      $enclosure
        ->setAttribute('length', $data['length']);
    }
    $enclosure
      ->setAttribute('href', $data['uri']);
    $root
      ->appendChild($enclosure);
  }
  protected function _setLink(DOMDocument $dom, DOMElement $root) {
    if (!$this
      ->getDataContainer()
      ->getLink()) {
      return;
    }
    $link = $dom
      ->createElement('link');
    $root
      ->appendChild($link);
    $link
      ->setAttribute('rel', 'alternate');
    $link
      ->setAttribute('type', 'text/html');
    $link
      ->setAttribute('href', $this
      ->getDataContainer()
      ->getLink());
  }

  /**
   * Set entry identifier
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   * @throws Writer\Exception\InvalidArgumentException
   */
  protected function _setId(DOMDocument $dom, DOMElement $root) {
    if (!$this
      ->getDataContainer()
      ->getId() && !$this
      ->getDataContainer()
      ->getLink()) {
      $message = 'Atom 1.0 entry elements MUST contain exactly one ' . 'atom:id element, or as an alternative, we can use the same ' . 'value as atom:link however neither a suitable link nor an ' . 'id have been set';
      $exception = new Writer\Exception\InvalidArgumentException($message);
      if (!$this->ignoreExceptions) {
        throw $exception;
      }
      else {
        $this->exceptions[] = $exception;
        return;
      }
    }
    if (!$this
      ->getDataContainer()
      ->getId()) {
      $this
        ->getDataContainer()
        ->setId($this
        ->getDataContainer()
        ->getLink());
    }
    if (!Uri::factory($this
      ->getDataContainer()
      ->getId())
      ->isValid() && !preg_match("#^urn:[a-zA-Z0-9][a-zA-Z0-9\\-]{1,31}:([a-zA-Z0-9\\(\\)\\+\\,\\.\\:\\=\\@\\;\$\\_\\!\\*\\-]|%[0-9a-fA-F]{2})*#", $this
      ->getDataContainer()
      ->getId()) && !$this
      ->_validateTagUri($this
      ->getDataContainer()
      ->getId())) {
      throw new Writer\Exception\InvalidArgumentException('Atom 1.0 IDs must be a valid URI/IRI');
    }
    $id = $dom
      ->createElement('id');
    $root
      ->appendChild($id);
    $text = $dom
      ->createTextNode($this
      ->getDataContainer()
      ->getId());
    $id
      ->appendChild($text);
  }

  /**
   * Validate a URI using the tag scheme (RFC 4151)
   *
   * @param string $id
   * @return bool
   */
  protected function _validateTagUri($id) {
    if (preg_match('/^tag:(?P<name>.*),(?P<date>\\d{4}-?\\d{0,2}-?\\d{0,2}):(?P<specific>.*)(.*:)*$/', $id, $matches)) {
      $dvalid = false;
      $date = $matches['date'];
      $d6 = strtotime($date);
      if (strlen($date) == 4 && $date <= date('Y')) {
        $dvalid = true;
      }
      elseif (strlen($date) == 7 && $d6 < strtotime("now")) {
        $dvalid = true;
      }
      elseif (strlen($date) == 10 && $d6 < strtotime("now")) {
        $dvalid = true;
      }
      $validator = new Validator\EmailAddress();
      if ($validator
        ->isValid($matches['name'])) {
        $nvalid = true;
      }
      else {
        $nvalid = $validator
          ->isValid('info@' . $matches['name']);
      }
      return $dvalid && $nvalid;
    }
    return false;
  }

  /**
   * Set entry content
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   * @throws Writer\Exception\InvalidArgumentException
   */
  protected function _setContent(DOMDocument $dom, DOMElement $root) {
    $content = $this
      ->getDataContainer()
      ->getContent();
    if (!$content && !$this
      ->getDataContainer()
      ->getLink()) {
      $message = 'Atom 1.0 entry elements MUST contain exactly one ' . 'atom:content element, or as an alternative, at least one link ' . 'with a rel attribute of "alternate" to indicate an alternate ' . 'method to consume the content.';
      $exception = new Writer\Exception\InvalidArgumentException($message);
      if (!$this->ignoreExceptions) {
        throw $exception;
      }
      else {
        $this->exceptions[] = $exception;
        return;
      }
    }
    if (!$content) {
      return;
    }
    $element = $dom
      ->createElement('content');
    $element
      ->setAttribute('type', 'xhtml');
    $xhtmlElement = $this
      ->_loadXhtml($content);
    $deep = version_compare(PHP_VERSION, '7', 'ge') ? 1 : true;
    $xhtml = $dom
      ->importNode($xhtmlElement, $deep);
    $element
      ->appendChild($xhtml);
    $root
      ->appendChild($element);
  }

  /**
   * Load a HTML string and attempt to normalise to XML
   */
  protected function _loadXhtml($content) {
    if (class_exists('tidy', false)) {
      $tidy = new \tidy();
      $config = [
        'output-xhtml' => true,
        'show-body-only' => true,
        'quote-nbsp' => false,
      ];
      $encoding = str_replace('-', '', $this
        ->getEncoding());
      $tidy
        ->parseString($content, $config, $encoding);
      $tidy
        ->cleanRepair();
      $xhtml = (string) $tidy;
    }
    else {
      $xhtml = $content;
    }
    $xhtml = preg_replace([
      "/(<[\\/]?)([a-zA-Z]+)/",
    ], '$1xhtml:$2', $xhtml);
    $dom = new DOMDocument('1.0', $this
      ->getEncoding());
    $dom
      ->loadXML('<xhtml:div xmlns:xhtml="http://www.w3.org/1999/xhtml">' . $xhtml . '</xhtml:div>');
    return $dom->documentElement;
  }

  /**
   * Set entry categories
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   */
  protected function _setCategories(DOMDocument $dom, DOMElement $root) {
    $categories = $this
      ->getDataContainer()
      ->getCategories();
    if (!$categories) {
      return;
    }
    foreach ($categories as $cat) {
      $category = $dom
        ->createElement('category');
      $category
        ->setAttribute('term', $cat['term']);
      if (isset($cat['label'])) {
        $category
          ->setAttribute('label', $cat['label']);
      }
      else {
        $category
          ->setAttribute('label', $cat['term']);
      }
      if (isset($cat['scheme'])) {
        $category
          ->setAttribute('scheme', $cat['scheme']);
      }
      $root
        ->appendChild($category);
    }
  }

  /**
   * Append Source element (Atom 1.0 Feed Metadata)
   *
   * @param  DOMDocument $dom
   * @param  DOMElement $root
   * @return void
   */
  protected function _setSource(DOMDocument $dom, DOMElement $root) {
    $source = $this
      ->getDataContainer()
      ->getSource();
    if (!$source) {
      return;
    }
    $renderer = new Renderer\Feed\AtomSource($source);
    $renderer
      ->setType($this
      ->getType());
    $element = $renderer
      ->render()
      ->getElement();
    $imported = $dom
      ->importNode($element, true);
    $root
      ->appendChild($imported);
  }

}

Classes

Name	Description
Atom