--- /dev/null
+<?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\Extension\ITunes;
+
+use Zend\Feed\Uri;
+use Zend\Feed\Writer;
+use Zend\Stdlib\StringUtils;
+use Zend\Stdlib\StringWrapper\StringWrapperInterface;
+
+class Feed
+{
+ /**
+ * Array of Feed data for rendering by Extension's renderers
+ *
+ * @var array
+ */
+ protected $data = [];
+
+ /**
+ * Encoding of all text values
+ *
+ * @var string
+ */
+ protected $encoding = 'UTF-8';
+
+ /**
+ * The used string wrapper supporting encoding
+ *
+ * @var StringWrapperInterface
+ */
+ protected $stringWrapper;
+
+ /**
+ * Constructor
+ */
+ public function __construct()
+ {
+ $this->stringWrapper = StringUtils::getWrapper($this->encoding);
+ }
+
+ /**
+ * Set feed encoding
+ *
+ * @param string $enc
+ * @return Feed
+ */
+ public function setEncoding($enc)
+ {
+ $this->stringWrapper = StringUtils::getWrapper($enc);
+ $this->encoding = $enc;
+ return $this;
+ }
+
+ /**
+ * Get feed encoding
+ *
+ * @return string
+ */
+ public function getEncoding()
+ {
+ return $this->encoding;
+ }
+
+ /**
+ * Set a block value of "yes" or "no". You may also set an empty string.
+ *
+ * @param string
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesBlock($value)
+ {
+ if (! ctype_alpha($value) && strlen($value) > 0) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "block" may only'
+ . ' contain alphabetic characters');
+ }
+ if ($this->stringWrapper->strlen($value) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "block" may only'
+ . ' contain a maximum of 255 characters');
+ }
+ $this->data['block'] = $value;
+ return $this;
+ }
+
+ /**
+ * Add feed authors
+ *
+ * @param array $values
+ * @return Feed
+ */
+ public function addItunesAuthors(array $values)
+ {
+ foreach ($values as $value) {
+ $this->addItunesAuthor($value);
+ }
+ return $this;
+ }
+
+ /**
+ * Add feed author
+ *
+ * @param string $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function addItunesAuthor($value)
+ {
+ if ($this->stringWrapper->strlen($value) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "author" may only'
+ . ' contain a maximum of 255 characters each');
+ }
+ if (! isset($this->data['authors'])) {
+ $this->data['authors'] = [];
+ }
+ $this->data['authors'][] = $value;
+ return $this;
+ }
+
+ /**
+ * Set feed categories
+ *
+ * @param array $values
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesCategories(array $values)
+ {
+ if (! isset($this->data['categories'])) {
+ $this->data['categories'] = [];
+ }
+ foreach ($values as $key => $value) {
+ if (! is_array($value)) {
+ if ($this->stringWrapper->strlen($value) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "category" may only'
+ . ' contain a maximum of 255 characters each');
+ }
+ $this->data['categories'][] = $value;
+ } else {
+ if ($this->stringWrapper->strlen($key) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "category" may only'
+ . ' contain a maximum of 255 characters each');
+ }
+ $this->data['categories'][$key] = [];
+ foreach ($value as $val) {
+ if ($this->stringWrapper->strlen($val) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "category" may only'
+ . ' contain a maximum of 255 characters each');
+ }
+ $this->data['categories'][$key][] = $val;
+ }
+ }
+ }
+ return $this;
+ }
+
+ /**
+ * Set feed image (icon)
+ *
+ * @param string $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesImage($value)
+ {
+ if (! Uri::factory($value)->isValid()) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "image" may only'
+ . ' be a valid URI/IRI');
+ }
+ if (! in_array(substr($value, -3), ['jpg', 'png'])) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "image" may only'
+ . ' use file extension "jpg" or "png" which must be the last three'
+ . ' characters of the URI (i.e. no query string or fragment)');
+ }
+ $this->data['image'] = $value;
+ return $this;
+ }
+
+ /**
+ * Set feed cumulative duration
+ *
+ * @param string $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesDuration($value)
+ {
+ $value = (string) $value;
+ if (! ctype_digit($value)
+ && ! preg_match("/^\d+:[0-5]{1}[0-9]{1}$/", $value)
+ && ! preg_match("/^\d+:[0-5]{1}[0-9]{1}:[0-5]{1}[0-9]{1}$/", $value)
+ ) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "duration" may only'
+ . ' be of a specified [[HH:]MM:]SS format');
+ }
+ $this->data['duration'] = $value;
+ return $this;
+ }
+
+ /**
+ * Set "explicit" flag
+ *
+ * @param bool $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesExplicit($value)
+ {
+ if (! in_array($value, ['yes', 'no', 'clean'])) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "explicit" may only'
+ . ' be one of "yes", "no" or "clean"');
+ }
+ $this->data['explicit'] = $value;
+ return $this;
+ }
+
+ /**
+ * Set feed keywords
+ *
+ * @param array $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesKeywords(array $value)
+ {
+ if (count($value) > 12) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "keywords" may only'
+ . ' contain a maximum of 12 terms');
+ }
+ $concat = implode(',', $value);
+ if ($this->stringWrapper->strlen($concat) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "keywords" may only'
+ . ' have a concatenated length of 255 chars where terms are delimited'
+ . ' by a comma');
+ }
+ $this->data['keywords'] = $value;
+ return $this;
+ }
+
+ /**
+ * Set new feed URL
+ *
+ * @param string $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesNewFeedUrl($value)
+ {
+ if (! Uri::factory($value)->isValid()) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "newFeedUrl" may only'
+ . ' be a valid URI/IRI');
+ }
+ $this->data['newFeedUrl'] = $value;
+ return $this;
+ }
+
+ /**
+ * Add feed owners
+ *
+ * @param array $values
+ * @return Feed
+ */
+ public function addItunesOwners(array $values)
+ {
+ foreach ($values as $value) {
+ $this->addItunesOwner($value);
+ }
+ return $this;
+ }
+
+ /**
+ * Add feed owner
+ *
+ * @param array $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function addItunesOwner(array $value)
+ {
+ if (! isset($value['name']) || ! isset($value['email'])) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "owner" must'
+ . ' be an array containing keys "name" and "email"');
+ }
+ if ($this->stringWrapper->strlen($value['name']) > 255
+ || $this->stringWrapper->strlen($value['email']) > 255
+ ) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "owner" may only'
+ . ' contain a maximum of 255 characters each for "name" and "email"');
+ }
+ if (! isset($this->data['owners'])) {
+ $this->data['owners'] = [];
+ }
+ $this->data['owners'][] = $value;
+ return $this;
+ }
+
+ /**
+ * Set feed subtitle
+ *
+ * @param string $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesSubtitle($value)
+ {
+ if ($this->stringWrapper->strlen($value) > 255) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "subtitle" may only'
+ . ' contain a maximum of 255 characters');
+ }
+ $this->data['subtitle'] = $value;
+ return $this;
+ }
+
+ /**
+ * Set feed summary
+ *
+ * @param string $value
+ * @return Feed
+ * @throws Writer\Exception\InvalidArgumentException
+ */
+ public function setItunesSummary($value)
+ {
+ if ($this->stringWrapper->strlen($value) > 4000) {
+ throw new Writer\Exception\InvalidArgumentException('invalid parameter: "summary" may only'
+ . ' contain a maximum of 4000 characters');
+ }
+ $this->data['summary'] = $value;
+ return $this;
+ }
+
+ /**
+ * Overloading: proxy to internal setters
+ *
+ * @param string $method
+ * @param array $params
+ * @return mixed
+ * @throws Writer\Exception\BadMethodCallException
+ */
+ public function __call($method, array $params)
+ {
+ $point = lcfirst(substr($method, 9));
+ if (! method_exists($this, 'setItunes' . ucfirst($point))
+ && ! method_exists($this, 'addItunes' . ucfirst($point))
+ ) {
+ throw new Writer\Exception\BadMethodCallException(
+ 'invalid method: ' . $method
+ );
+ }
+ if (! array_key_exists($point, $this->data) || empty($this->data[$point])) {
+ return;
+ }
+ return $this->data[$point];
+ }
+}
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