AbstractFeed.php in Zircon Profile 8

Namespace

Zend\Feed\Writer

File

vendor/zendframework/zend-feed/src/Writer/AbstractFeed.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;

use DateTime;
use Zend\Feed\Uri;
use Zend\Validator;
class AbstractFeed {

  /**
   * Contains all Feed level date to append in feed output
   *
   * @var array
   */
  protected $data = [];

  /**
   * Holds the value "atom" or "rss" depending on the feed type set when
   * when last exported.
   *
   * @var string
   */
  protected $type = null;

  /**
   * @var $extensions
   */
  protected $extensions;

  /**
   * Constructor: Primarily triggers the registration of core extensions and
   * loads those appropriate to this data container.
   *
   */
  public function __construct() {
    Writer::registerCoreExtensions();
    $this
      ->_loadExtensions();
  }

  /**
   * Set a single author
   *
   * The following option keys are supported:
   * 'name'  => (string) The name
   * 'email' => (string) An optional email
   * 'uri'   => (string) An optional and valid URI
   *
   * @param array $author
   * @throws Exception\InvalidArgumentException If any value of $author not follow the format.
   * @return AbstractFeed
   */
  public function addAuthor(array $author) {

    // Check array values
    if (!array_key_exists('name', $author) || empty($author['name']) || !is_string($author['name'])) {
      throw new Exception\InvalidArgumentException('Invalid parameter: author array must include a "name" key with a non-empty string value');
    }
    if (isset($author['email'])) {
      if (empty($author['email']) || !is_string($author['email'])) {
        throw new Exception\InvalidArgumentException('Invalid parameter: "email" array value must be a non-empty string');
      }
    }
    if (isset($author['uri'])) {
      if (empty($author['uri']) || !is_string($author['uri']) || !Uri::factory($author['uri'])
        ->isValid()) {
        throw new Exception\InvalidArgumentException('Invalid parameter: "uri" array value must be a non-empty string and valid URI/IRI');
      }
    }
    $this->data['authors'][] = $author;
    return $this;
  }

  /**
   * Set an array with feed authors
   *
   * @see addAuthor
   * @param array $authors
   * @return AbstractFeed
   */
  public function addAuthors(array $authors) {
    foreach ($authors as $author) {
      $this
        ->addAuthor($author);
    }
    return $this;
  }

  /**
   * Set the copyright entry
   *
   * @param  string      $copyright
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setCopyright($copyright) {
    if (empty($copyright) || !is_string($copyright)) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
    }
    $this->data['copyright'] = $copyright;
    return $this;
  }

  /**
   * Set the feed creation date
   *
   * @param null|int|DateTime
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setDateCreated($date = null) {
    if ($date === null) {
      $date = new DateTime();
    }
    elseif (is_int($date)) {
      $date = new DateTime('@' . $date);
    }
    elseif (!$date instanceof DateTime) {
      throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp' . ' passed as parameter');
    }
    $this->data['dateCreated'] = $date;
    return $this;
  }

  /**
   * Set the feed modification date
   *
   * @param null|int|DateTime
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setDateModified($date = null) {
    if ($date === null) {
      $date = new DateTime();
    }
    elseif (is_int($date)) {
      $date = new DateTime('@' . $date);
    }
    elseif (!$date instanceof DateTime) {
      throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp' . ' passed as parameter');
    }
    $this->data['dateModified'] = $date;
    return $this;
  }

  /**
   * Set the feed last-build date. Ignored for Atom 1.0.
   *
   * @param null|int|DateTime
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setLastBuildDate($date = null) {
    if ($date === null) {
      $date = new DateTime();
    }
    elseif (is_int($date)) {
      $date = new DateTime('@' . $date);
    }
    elseif (!$date instanceof DateTime) {
      throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp' . ' passed as parameter');
    }
    $this->data['lastBuildDate'] = $date;
    return $this;
  }

  /**
   * Set the feed description
   *
   * @param string $description
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setDescription($description) {
    if (empty($description) || !is_string($description)) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
    }
    $this->data['description'] = $description;
    return $this;
  }

  /**
   * Set the feed generator entry
   *
   * @param array|string $name
   * @param null|string $version
   * @param null|string $uri
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setGenerator($name, $version = null, $uri = null) {
    if (is_array($name)) {
      $data = $name;
      if (empty($data['name']) || !is_string($data['name'])) {
        throw new Exception\InvalidArgumentException('Invalid parameter: "name" must be a non-empty string');
      }
      $generator = [
        'name' => $data['name'],
      ];
      if (isset($data['version'])) {
        if (empty($data['version']) || !is_string($data['version'])) {
          throw new Exception\InvalidArgumentException('Invalid parameter: "version" must be a non-empty string');
        }
        $generator['version'] = $data['version'];
      }
      if (isset($data['uri'])) {
        if (empty($data['uri']) || !is_string($data['uri']) || !Uri::factory($data['uri'])
          ->isValid()) {
          throw new Exception\InvalidArgumentException('Invalid parameter: "uri" must be a non-empty string and a valid URI/IRI');
        }
        $generator['uri'] = $data['uri'];
      }
    }
    else {
      if (empty($name) || !is_string($name)) {
        throw new Exception\InvalidArgumentException('Invalid parameter: "name" must be a non-empty string');
      }
      $generator = [
        'name' => $name,
      ];
      if (isset($version)) {
        if (empty($version) || !is_string($version)) {
          throw new Exception\InvalidArgumentException('Invalid parameter: "version" must be a non-empty string');
        }
        $generator['version'] = $version;
      }
      if (isset($uri)) {
        if (empty($uri) || !is_string($uri) || !Uri::factory($uri)
          ->isValid()) {
          throw new Exception\InvalidArgumentException('Invalid parameter: "uri" must be a non-empty string and a valid URI/IRI');
        }
        $generator['uri'] = $uri;
      }
    }
    $this->data['generator'] = $generator;
    return $this;
  }

  /**
   * Set the feed ID - URI or URN (via PCRE pattern) supported
   *
   * @param string $id
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setId($id) {
    if ((empty($id) || !is_string($id) || !Uri::factory($id)
      ->isValid()) && !preg_match("#^urn:[a-zA-Z0-9][a-zA-Z0-9\\-]{1,31}:([a-zA-Z0-9\\(\\)\\+\\,\\.\\:\\=\\@\\;\$\\_\\!\\*\\-]|%[0-9a-fA-F]{2})*#", $id) && !$this
      ->_validateTagUri($id)) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string and valid URI/IRI');
    }
    $this->data['id'] = $id;
    return $this;
  }

  /**
   * 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 a feed image (URI at minimum). Parameter is a single array with the
   * required key 'uri'. When rendering as RSS, the required keys are 'uri',
   * 'title' and 'link'. RSS also specifies three optional parameters 'width',
   * 'height' and 'description'. Only 'uri' is required and used for Atom rendering.
   *
   * @param array $data
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setImage(array $data) {
    if (empty($data['uri']) || !is_string($data['uri']) || !Uri::factory($data['uri'])
      ->isValid()) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter \'uri\'' . ' must be a non-empty string and valid URI/IRI');
    }
    $this->data['image'] = $data;
    return $this;
  }

  /**
   * Set the feed language
   *
   * @param string $language
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setLanguage($language) {
    if (empty($language) || !is_string($language)) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
    }
    $this->data['language'] = $language;
    return $this;
  }

  /**
   * Set a link to the HTML source
   *
   * @param string $link
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setLink($link) {
    if (empty($link) || !is_string($link) || !Uri::factory($link)
      ->isValid()) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string and valid URI/IRI');
    }
    $this->data['link'] = $link;
    return $this;
  }

  /**
   * Set a link to an XML feed for any feed type/version
   *
   * @param string $link
   * @param string $type
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setFeedLink($link, $type) {
    if (empty($link) || !is_string($link) || !Uri::factory($link)
      ->isValid()) {
      throw new Exception\InvalidArgumentException('Invalid parameter: "link"" must be a non-empty string and valid URI/IRI');
    }
    if (!in_array(strtolower($type), [
      'rss',
      'rdf',
      'atom',
    ])) {
      throw new Exception\InvalidArgumentException('Invalid parameter: "type"; You must declare the type of feed the link points to, i.e. RSS, RDF or Atom');
    }
    $this->data['feedLinks'][strtolower($type)] = $link;
    return $this;
  }

  /**
   * Set the feed title
   *
   * @param string $title
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setTitle($title) {
    if (empty($title) || !is_string($title)) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
    }
    $this->data['title'] = $title;
    return $this;
  }

  /**
   * Set the feed character encoding
   *
   * @param string $encoding
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setEncoding($encoding) {
    if (empty($encoding) || !is_string($encoding)) {
      throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
    }
    $this->data['encoding'] = $encoding;
    return $this;
  }

  /**
   * Set the feed's base URL
   *
   * @param string $url
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function setBaseUrl($url) {
    if (empty($url) || !is_string($url) || !Uri::factory($url)
      ->isValid()) {
      throw new Exception\InvalidArgumentException('Invalid parameter: "url" array value' . ' must be a non-empty string and valid URI/IRI');
    }
    $this->data['baseUrl'] = $url;
    return $this;
  }

  /**
   * Add a Pubsubhubbub hub endpoint URL
   *
   * @param string $url
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function addHub($url) {
    if (empty($url) || !is_string($url) || !Uri::factory($url)
      ->isValid()) {
      throw new Exception\InvalidArgumentException('Invalid parameter: "url" array value' . ' must be a non-empty string and valid URI/IRI');
    }
    if (!isset($this->data['hubs'])) {
      $this->data['hubs'] = [];
    }
    $this->data['hubs'][] = $url;
    return $this;
  }

  /**
   * Add Pubsubhubbub hub endpoint URLs
   *
   * @param array $urls
   * @return AbstractFeed
   */
  public function addHubs(array $urls) {
    foreach ($urls as $url) {
      $this
        ->addHub($url);
    }
    return $this;
  }

  /**
   * Add a feed category
   *
   * @param array $category
   * @throws Exception\InvalidArgumentException
   * @return AbstractFeed
   */
  public function addCategory(array $category) {
    if (!isset($category['term'])) {
      throw new Exception\InvalidArgumentException('Each category must be an array and ' . 'contain at least a "term" element containing the machine ' . ' readable category name');
    }
    if (isset($category['scheme'])) {
      if (empty($category['scheme']) || !is_string($category['scheme']) || !Uri::factory($category['scheme'])
        ->isValid()) {
        throw new Exception\InvalidArgumentException('The Atom scheme or RSS domain of' . ' a category must be a valid URI');
      }
    }
    if (!isset($this->data['categories'])) {
      $this->data['categories'] = [];
    }
    $this->data['categories'][] = $category;
    return $this;
  }

  /**
   * Set an array of feed categories
   *
   * @param array $categories
   * @return AbstractFeed
   */
  public function addCategories(array $categories) {
    foreach ($categories as $category) {
      $this
        ->addCategory($category);
    }
    return $this;
  }

  /**
   * Get a single author
   *
   * @param  int $index
   * @return string|null
   */
  public function getAuthor($index = 0) {
    if (isset($this->data['authors'][$index])) {
      return $this->data['authors'][$index];
    }
    return;
  }

  /**
   * Get an array with feed authors
   *
   * @return array
   */
  public function getAuthors() {
    if (!array_key_exists('authors', $this->data)) {
      return;
    }
    return $this->data['authors'];
  }

  /**
   * Get the copyright entry
   *
   * @return string|null
   */
  public function getCopyright() {
    if (!array_key_exists('copyright', $this->data)) {
      return;
    }
    return $this->data['copyright'];
  }

  /**
   * Get the feed creation date
   *
   * @return string|null
   */
  public function getDateCreated() {
    if (!array_key_exists('dateCreated', $this->data)) {
      return;
    }
    return $this->data['dateCreated'];
  }

  /**
   * Get the feed modification date
   *
   * @return string|null
   */
  public function getDateModified() {
    if (!array_key_exists('dateModified', $this->data)) {
      return;
    }
    return $this->data['dateModified'];
  }

  /**
   * Get the feed last-build date
   *
   * @return string|null
   */
  public function getLastBuildDate() {
    if (!array_key_exists('lastBuildDate', $this->data)) {
      return;
    }
    return $this->data['lastBuildDate'];
  }

  /**
   * Get the feed description
   *
   * @return string|null
   */
  public function getDescription() {
    if (!array_key_exists('description', $this->data)) {
      return;
    }
    return $this->data['description'];
  }

  /**
   * Get the feed generator entry
   *
   * @return string|null
   */
  public function getGenerator() {
    if (!array_key_exists('generator', $this->data)) {
      return;
    }
    return $this->data['generator'];
  }

  /**
   * Get the feed ID
   *
   * @return string|null
   */
  public function getId() {
    if (!array_key_exists('id', $this->data)) {
      return;
    }
    return $this->data['id'];
  }

  /**
   * Get the feed image URI
   *
   * @return array
   */
  public function getImage() {
    if (!array_key_exists('image', $this->data)) {
      return;
    }
    return $this->data['image'];
  }

  /**
   * Get the feed language
   *
   * @return string|null
   */
  public function getLanguage() {
    if (!array_key_exists('language', $this->data)) {
      return;
    }
    return $this->data['language'];
  }

  /**
   * Get a link to the HTML source
   *
   * @return string|null
   */
  public function getLink() {
    if (!array_key_exists('link', $this->data)) {
      return;
    }
    return $this->data['link'];
  }

  /**
   * Get a link to the XML feed
   *
   * @return string|null
   */
  public function getFeedLinks() {
    if (!array_key_exists('feedLinks', $this->data)) {
      return;
    }
    return $this->data['feedLinks'];
  }

  /**
   * Get the feed title
   *
   * @return string|null
   */
  public function getTitle() {
    if (!array_key_exists('title', $this->data)) {
      return;
    }
    return $this->data['title'];
  }

  /**
   * Get the feed character encoding
   *
   * @return string|null
   */
  public function getEncoding() {
    if (!array_key_exists('encoding', $this->data)) {
      return 'UTF-8';
    }
    return $this->data['encoding'];
  }

  /**
   * Get the feed's base url
   *
   * @return string|null
   */
  public function getBaseUrl() {
    if (!array_key_exists('baseUrl', $this->data)) {
      return;
    }
    return $this->data['baseUrl'];
  }

  /**
   * Get the URLs used as Pubsubhubbub hubs endpoints
   *
   * @return string|null
   */
  public function getHubs() {
    if (!array_key_exists('hubs', $this->data)) {
      return;
    }
    return $this->data['hubs'];
  }

  /**
   * Get the feed categories
   *
   * @return string|null
   */
  public function getCategories() {
    if (!array_key_exists('categories', $this->data)) {
      return;
    }
    return $this->data['categories'];
  }

  /**
   * Resets the instance and deletes all data
   *
   * @return void
   */
  public function reset() {
    $this->data = [];
  }

  /**
   * Set the current feed type being exported to "rss" or "atom". This allows
   * other objects to gracefully choose whether to execute or not, depending
   * on their appropriateness for the current type, e.g. renderers.
   *
   * @param string $type
   * @return AbstractFeed
   */
  public function setType($type) {
    $this->type = $type;
    return $this;
  }

  /**
   * Retrieve the current or last feed type exported.
   *
   * @return string Value will be "rss" or "atom"
   */
  public function getType() {
    return $this->type;
  }

  /**
   * Unset a specific data point
   *
   * @param string $name
   * @return AbstractFeed
   */
  public function remove($name) {
    if (isset($this->data[$name])) {
      unset($this->data[$name]);
    }
    return $this;
  }

  /**
   * Method overloading: call given method on first extension implementing it
   *
   * @param  string $method
   * @param  array $args
   * @return mixed
   * @throws Exception\BadMethodCallException if no extensions implements the method
   */
  public function __call($method, $args) {
    foreach ($this->extensions as $extension) {
      try {
        return call_user_func_array([
          $extension,
          $method,
        ], $args);
      } catch (Exception\BadMethodCallException $e) {
      }
    }
    throw new Exception\BadMethodCallException('Method: ' . $method . ' does not exist and could not be located on a registered Extension');
  }

  /**
   * Load extensions from Zend\Feed\Writer\Writer
   *
   * @throws Exception\RuntimeException
   * @return void
   */
  protected function _loadExtensions() {
    $all = Writer::getExtensions();
    $manager = Writer::getExtensionManager();
    $exts = $all['feed'];
    foreach ($exts as $ext) {
      if (!$manager
        ->has($ext)) {
        throw new Exception\RuntimeException(sprintf('Unable to load extension "%s"; could not resolve to class', $ext));
      }
      $this->extensions[$ext] = $manager
        ->get($ext);
      $this->extensions[$ext]
        ->setEncoding($this
        ->getEncoding());
    }
  }

}

Classes

Name	Description
AbstractFeed