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<?php
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/**
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* Service
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*
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* This file is part of Grav MediaEmbed plugin.
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*
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* Dual licensed under the MIT or GPL Version 3 licenses, see LICENSE.
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* http://benjamin-regler.de/license/
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*/
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namespace Grav\Plugin\MediaEmbed;
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use Grav\Common\Grav;
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use Grav\Common\GravTrait;
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use RocketTheme\Toolbox\Event\Event;
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/**
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* Service
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*/
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class Service
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{
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/**
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* @var Service
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*/
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use GravTrait;
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/** ---------------------------
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* Private/protected properties
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* ----------------------------
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*/
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/**
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* @var Grav\Plugin\MediaEmbed\ServiceProvider
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*/
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protected $services = [];
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/**
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* @var array
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*/
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protected $domains;
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/** -------------
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* Public methods
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* --------------
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*/
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public function __construct()
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{
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// Fire event
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self::getGrav()->fireEvent('onMediaEmbed', new Event(['service' => $this]));
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}
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public function call($method, $params = [])
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{
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$result = [];
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foreach ($this->services as $key => $service) {
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if (method_exists($service['provider'], $method)) {
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$data = call_user_method_array([$service['provider'], $method], $params);
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if ($data) {
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$result[] = $data;
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}
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}
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}
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return $result;
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}
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public function match($url, $embedCode = null)
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{
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$embed_key = 'embed';
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if ($embedCode && (strtolower($embedCode) !== $embed_key)) {
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return false;
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}
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$parts = $this->parseUrl($url);
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if ($parts['host'] == $embed_key) {
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return false;
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}
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return isset($this->domains[$parts['host']]);
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}
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public function embed($embedCode, $options = [])
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{
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if (!$this->match($embedCode)) {
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throw new \Exception('Unknown embed code "' . htmlspecialchars($embedCode) . '".');
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}
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// Extract domain from embed code
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$domain = strtolower($this->parseUrl($embedCode)['host']);
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$key = $this->domains[$domain];
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// Call OEmbed service provider
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$provider = $this->services[$key]['provider'];
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$provider->init($embedCode, $options);
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// Return initialized provider
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return $provider;
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// // Get type of media
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// $type = ucfirst($provider->type());
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// // Get the default properties of the response class
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// $class = __NAMESPACE__ . "\\Response\\{$type}Response";
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// // Repopulate properties
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// $vars = [
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// 'raw' => $embedCode,
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// 'options' => $provider->attributes(),
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// 'url' => $provider->getEmbedCode(,
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// ] + get_class_vars($class);
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// // Enrich properties with media resource informations
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// foreach ($vars as $key => $value) {
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// if (!$value) {
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// $vars[$key] = $provider->{$key}();
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// }
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// }
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// // Create response
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// $response = new $class($vars);
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// return [$provider, $response];
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// try {
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// // Call ServiceProvider
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// $provider->init($embedCode);
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// $embed += array(
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// // Get unique id of video
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// 'id' => $provider->canonicalize($embedCode),
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// // Templates are stored in the templates/partials folder
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// 'assets' => $provider->getAssets(),
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// 'template' => $provider->getTemplatePaths(),
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// 'variables' => $provider->getTemplateVariables(),
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// // Store embed status of ServiceProvider call
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// 'success' => true,
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// 'message' => '',
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// );
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// } catch (\Exception $e) {
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// $embed['success'] = false;
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// $embed['message'] = $e->getMessage();
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// }
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// }
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// return $embed;
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}
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public function getDomains()
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{
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$allDomains = [];
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foreach ($this->services as $key => $service) {
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$allDomains[] = $service['domains'];
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}
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// Flatten multidimensional array of domains
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$domains = [];
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array_walk($allDomains, function($domain) use (&$domains) {
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$domains[] = $domain;
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});
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// Return unique array of domains
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return array_unique($domains);
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}
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public function getProviders()
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{
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// Get providers sorted by priority
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$classes = $this->collectProviders(function($key, $service) {
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return true;
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}, true, 'class');
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// Replace names with provider classes
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$providers = [];
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foreach ($classes as $class) {
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$name = substr($class, strrpos($class, '\\') + 1);
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$provider = $this->services[$class]['provider'];
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if ( isset($providers[$name]) ) {
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$providers[$name] = array($providers[$name], $provider);
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} else {
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$providers[$name][] = $provider;
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}
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}
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return $providers;
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}
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public function getProviderByName($name, $all = false)
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{
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$providers = $this->collectProviders(
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function($key, $service) use ($name) {
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return preg_match("~^$name$~i", $service['name']);
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}, $all);
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return $providers;
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}
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public function getProviderByDomain($domain, $all = false)
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{
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$providers = $this->collectProviders(
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function($key, $service) use ($domain) {
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return in_array($domain, $service['domains']);
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}, $all);
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return $providers;
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}
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public function register($provider, $priority = 0)
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{
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if ($provider instanceof \Grav\Plugin\MediaEmbed\OEmbed\OEmbed) {
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$key = md5(spl_object_hash($provider));
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$domains = $provider->getDomains();
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$this->services[$key] = array(
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'priority' => $priority,
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'domains' => $domains,
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'provider' => $provider,
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'name' => $provider->name(),
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'class' => $key,
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);
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foreach ($domains as $domain) {
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if (!isset($this->domains[$domain]) || ($priority > $this->services[$domain]['priority'])) {
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$this->domains[$domain] = $key;
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}
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}
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}
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}
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public function unregister($provider)
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{
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if ($provider instanceof \Grav\Plugin\MediaEmbed\OEmbed\OEmbed) {
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$key = md5(spl_object_hash($provider));
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if (isset($this->services[$key])) {
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$domains = $this->services[$key]['domains'];
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unset($this->services[$key]);
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// Unset and repopulate domain keys, if possible
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foreach ($domains as $domain) {
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if ($provider = $this->getProviderByDomain($domain)) {
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$this->domains[$domain] = get_class($provider);
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} else {
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unset($this->domains[$domain]);
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}
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}
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}
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}
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}
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protected function collectProviders($callback, $all, $id = 'provider')
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{
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$services = [];
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foreach ($this->services as $key => $service) {
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if ($callback($key, $service)) {
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$services[] = $service;
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}
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}
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// Sort providers based on priority
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uasort($services, function ($a, $b) {
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// Priority is first sort criterion
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$cmp = $a['priority'] - $b['priority'];
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// Text string is second criterion (in case of two equal priorities)
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if ( $cmp == 0 ) {
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$cmp = strnatcmp($a['name'], $b['name']);
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}
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return $cmp;
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});
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// Strip additional service informations
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$providers = array_map(function($service) use ($id) {
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return $service[$id];
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}, $services);
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if (count($providers)) {
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// Return providers
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return ($all ? $providers : $providers[0]);
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}
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return [];
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}
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/** -------------------------------
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* Private/protected helper methods
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* --------------------------------
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*/
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protected function parseUrl($url)
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{
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if (!filter_var($url, FILTER_VALIDATE_URL)) {
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return [];
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}
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// Parse URL
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$url = html_entity_decode($url, ENT_COMPAT | ENT_HTML401, 'UTF-8');
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$parts = parse_url($url);
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$parts['url'] = $url;
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$parts['host'] = preg_replace("/^www\./", '', $parts['host']);
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// Get top-level domain from URL
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$parts['domain'] = isset($parts['host']) ? $parts['host'] : '';
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if ( preg_match('~(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$~i', $parts['domain'], $match) ) {
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$parts['domain'] = $match['domain'];
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}
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if (isset($parts['query'])) {
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parse_str(urldecode($parts['query']), $parts['query']);
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}
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$parts['query'] = [];
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return $parts;
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}
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}
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