.*?) # title = $6 \\5 # matching quote [ \\t]* )? # title is optional \\) ) ~xs"; // Replace all mediaembed links by a (unique) hash $content = preg_replace_callback($regex, function($matches) { // Get the url and parse it $url = parse_url(htmlspecialchars_decode($matches[3])); // If there is no host set but there is a path, the file is local if (!isset($url['host']) && isset($url['path'])) { return $matches[0]; } if (!isset($matches['title'])) { $matches['title'] = ''; } return $this->hash($matches[0], $matches); }, $content); return $content; } public function process($content, $config = []) { /** @var Twig $twig */ $twig = self::getGrav()['twig']; // Initialize unique per-page counter $uid = 1; // '~(<p>)?\s*<a[^>]*href\s*=\s*([\'"])(?P<href>.*?)\2[^>]*>(?P<code>.*?)</a>\s*(?(1)(</p>))~i', // Get all <a> tags and extract "href" attribute $content = preg_replace_callback( '~mediaembed::([0-9a-z]+)::([0-9]+)::M~i', function($match) use ($twig, &$uid, $config) { list($embed, $data) = $this->hashes[$match[0]]; // Check if a service for a specific domain is registered if ($this->service->match($data['src'])) { $mediaembed = [ 'uid' => $uid++, 'service' => null, 'config' => $config, 'raw' => [ 'alt' => $data['alt'], 'title' => $data['title'], 'src' => html_entity_decode($data['src']), ], 'success' => true, 'message' => '', ]; // Load and get data of OEmbed Media Service try { $provider = $this->service->embed($data['src']); } catch (\Exception $e) { $mediaembed['message'] = $e->getMessage(); $mediaembed['success'] = false; } // Setup variables for embedding OEmbed Media Service if ($mediaembed['success']) { // Get assets/options of current provider $assets = $provider->onTwigTemplateVariables( new Event(['service' => $this->service, 'mediaembed' => $this]) ); // Assets are passed by value as an array if (is_array($assets)) { $this->addAssets($assets); } // Add OEmbed Service to variables $mediaembed['service'] = $provider; // TODO: Cache contents from thumbnail and url } // Embed OEmbed Media $vars = ['mediaembed' => $mediaembed]; $template = 'partials/mediaembed' . TEMPLATE_EXT; $embed = $twig->processTemplate($template, $vars); } else { $text = (strlen($data['alt']) > 0) ? $data['alt'] : $data['src']; // If display link or img $link = $config->get('link'); if($link == true) { $attributes = [ 'href' => $data['src'], 'title' => $data['title'], ]; $format = '<a%s>%s</a>'; } else { $attributes = [ 'src' => $data['src'], 'title' => $data['title'], 'alt' => $data['alt'], ]; $format = '<img%s>'; } foreach ($attributes as $key => $value) { if (strlen($value) == 0) { unset($attributes[$key]); } else { $value = htmlspecialchars($value, ENT_QUOTES, 'UTF-8'); $attributes[$key] = $key . '="' . $value . '"'; } } $attributes = $attributes ? ' ' . implode(' ', $attributes) : ''; // Transform embed media to link or img for compatibility $embed = sprintf($format, $attributes, $text); } return $embed; }, $content); $this->reset(); // Write content back to page return $content; } /** * Fires an event with optional parameters. * * @param string $eventName The name of the event. * @param Event $event Optional parameter to be passed to the * called methods. * @return Event */ public function fireEvent($eventName, Event $event = null) { // Dispatch event; just propagate it to service class return $this->service->call($eventName, $event); } /** * Get assets of loaded media services. * * @param boolean $reset Toggle whether to reset assets after retrieving * or not. */ public function getAssets($reset = true) { $assets = $this->assets; if ($reset) { $this->assets = []; } return $assets; } /** * Add assets to the queue of MediaEmbed plugin * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function addAssets($assets, $append = true) { // Append or reset assets if (!$append) { $this->assets = []; } // Wrap non-array assets in an array if (!is_array($assets)) { $assets = array($assets); } // Merge assets $assets = array_merge($this->assets, $assets); // Remove duplicates $this->assets = array_keys(array_flip($assets)); } /** * Add assets to the queue of MediaEmbed plugin * * Alias for `addAssets` * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function add($assets, $append = true) { return $this->addAssets($assets, $append); } /** * Add assets to the queue of MediaEmbed plugin * * Alias for `addAssets` * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function addCss($assets, $append = true) { return $this->addAssets($assets, $append); } /** * Add assets to the queue of MediaEmbed plugin * * Alias for `addAssets` * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function addJs($assets, $append = true) { return $this->addAssets($assets, $append); } /** ------------------------------- * Private/protected helper methods * -------------------------------- */ /** * Get cached media or media with key. * * @param string $key The key to load from the cache. * @return mixed The media content. */ protected function getCachedMedia($key) { /** @var Cache $cache */ $cache = $grav['cache']; // Check, if cache should be used or not if ($this->config->get('cache.enabled')) { // Get cache id and try to fetch data $cache_id = md5('mediaembed' . $key . $cache->getKey()); $data = $cache->fetch($cache_id); if ((false === $data) || (time() > $data['expire'])) { // Pack and provide data with a time stamp. $data = array( 'content' => $this->service->embed($key), 'expire' => time() + $this->config->get('cache.lifetime'), ); $cache->save($cache_id, $data); } // Return data contents $content = $data['content']; } else { // Just call callback and return result $content = $this->service->embed($key); } return $content; } protected function parseUrl($url) { if (!filter_var($url, FILTER_VALIDATE_URL)) { return []; } // Parse URL $url = html_entity_decode($url, ENT_COMPAT | ENT_HTML401, 'UTF-8'); $parts = parse_url($url); $parts['url'] = $url; // Get top-level domain from URL $parts['domain'] = isset($parts['host']) ? $parts['host'] : ''; if ( preg_match('~(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$~i', $parts['domain'], $match) ) { $parts['domain'] = $match['domain']; } if (isset($parts['query'])) { parse_str(urldecode($parts['query']), $parts['query']); } $parts['query'] = []; return $parts; } /** * Reset MathJax class */ protected function reset() { $this->hashes = []; } /** * Hash a given text. * * Called whenever a tag must be hashed when a function insert an * atomic element in the text stream. Passing $text to through this * function gives a unique text-token which will be reverted back when * calling unhash. * * @param string $text The text to be hashed * @param string $type The type (category) the text should be saved * * @return string Return a unique text-token which will be * reverted back when calling unhash. */ protected function hash($text, $data = []) { static $counter = 0; // Swap back any tag hash found in $text so we do not have to `unhash` // multiple times at the end. $text = $this->unhash($text); // Then hash the block $key = implode('::', array('mediaembed', $this->id, ++$counter, 'M')); $this->hashes[$key] = [$text, $data]; // String that will replace the tag return $key; } /** * Swap back in all the tags hashed by hash. * * @param string $text The text to be un-hashed * * @return string A text containing no hash inside */ protected function unhash($text) { $text = preg_replace_callback( '~mediaembed::([0-9a-z]+)::([0-9]+)::M~i', function($atches) { return $this->hashes[$matches[0]][0]; }, $text); return $text; } }

service = new Service(); $this->config = $config; $this->hashes = []; $services = $this->config->get('plugins.mediaembed.services', []); foreach ($services as $name => $config) { if (!$config['enabled']) { continue; } // Load providers in directory "services" $class = __NAMESPACE__ . "\\Services\\$name"; if (!class_exists($class)) { // Fallback to a more generic one $type = isset($config['type']) ? $config['type'] : ''; $class = __NAMESPACE__."\\OEmbed\\OEmbed".ucfirst($type); } // Populate config $config['media'] = $this->config->get('plugins.mediaembed.media', []); $config['name'] = $name; if (class_exists($class)) { // Load ServiceProvider $provider = new $class($config); // Register ServiceProvider $this->service->register($provider); } } } /** * Gets and sets the identifier for hashing. * * @param string $var the identifier * * @return string the identifier */ public function id($var = null) { if ($var !== null) { $this->id = $var; } return $this->id; } public function prepare($content, $id = '') { // Set unique identifier based on page content $this->id(md5(time() . $id . md5($content))); // Reset class hashes before processing $this->reset(); $regex = "~ ( # wrap whole match in $1 !\\[ (?P.*?) # alt text = $2 \\] \$ # literal paren [ \\t]* \S+?)>? # src url = $3 [ \\t]* ( # $4 (['\"]) # quote char = $5 (?.*?) # title = $6 \\5 # matching quote [ \\t]* )? # title is optional \$ ) ~xs"; // Replace all mediaembed links by a (unique) hash $content = preg_replace_callback($regex, function($matches) { // Get the url and parse it $url = parse_url(htmlspecialchars_decode($matches[3])); // If there is no host set but there is a path, the file is local if (!isset($url['host']) && isset($url['path'])) { return $matches[0]; } if (!isset($matches['title'])) { $matches['title'] = ''; } return $this->hash($matches[0], $matches); }, $content); return $content; } public function process($content, $config = []) { /** @var Twig $twig */ $twig = self::getGrav()['twig']; // Initialize unique per-page counter $uid = 1; // '~(<p>)?\s*<a[^>]*href\s*=\s*([\'"])(?P<href>.*?)\2[^>]*>(?P<code>.*?)</a>\s*(?(1)(</p>))~i', // Get all <a> tags and extract "href" attribute $content = preg_replace_callback( '~mediaembed::([0-9a-z]+)::([0-9]+)::M~i', function($match) use ($twig, &$uid, $config) { list($embed, $data) = $this->hashes[$match[0]]; // Check if a service for a specific domain is registered if ($this->service->match($data['src'])) { $mediaembed = [ 'uid' => $uid++, 'service' => null, 'config' => $config, 'raw' => [ 'alt' => $data['alt'], 'title' => $data['title'], 'src' => html_entity_decode($data['src']), ], 'success' => true, 'message' => '', ]; // Load and get data of OEmbed Media Service try { $provider = $this->service->embed($data['src']); } catch (\Exception $e) { $mediaembed['message'] = $e->getMessage(); $mediaembed['success'] = false; } // Setup variables for embedding OEmbed Media Service if ($mediaembed['success']) { // Get assets/options of current provider $assets = $provider->onTwigTemplateVariables( new Event(['service' => $this->service, 'mediaembed' => $this]) ); // Assets are passed by value as an array if (is_array($assets)) { $this->addAssets($assets); } // Add OEmbed Service to variables $mediaembed['service'] = $provider; // TODO: Cache contents from thumbnail and url } // Embed OEmbed Media $vars = ['mediaembed' => $mediaembed]; $template = 'partials/mediaembed' . TEMPLATE_EXT; $embed = $twig->processTemplate($template, $vars); } else { $text = (strlen($data['alt']) > 0) ? $data['alt'] : $data['src']; // If display link or img $link = $config->get('link'); if($link == true) { $attributes = [ 'href' => $data['src'], 'title' => $data['title'], ]; $format = '<a%s>%s</a>'; } else { $attributes = [ 'src' => $data['src'], 'title' => $data['title'], 'alt' => $data['alt'], ]; $format = '<img%s>'; } foreach ($attributes as $key => $value) { if (strlen($value) == 0) { unset($attributes[$key]); } else { $value = htmlspecialchars($value, ENT_QUOTES, 'UTF-8'); $attributes[$key] = $key . '="' . $value . '"'; } } $attributes = $attributes ? ' ' . implode(' ', $attributes) : ''; // Transform embed media to link or img for compatibility $embed = sprintf($format, $attributes, $text); } return $embed; }, $content); $this->reset(); // Write content back to page return $content; } /** * Fires an event with optional parameters. * * @param string $eventName The name of the event. * @param Event $event Optional parameter to be passed to the * called methods. * @return Event */ public function fireEvent($eventName, Event $event = null) { // Dispatch event; just propagate it to service class return $this->service->call($eventName, $event); } /** * Get assets of loaded media services. * * @param boolean $reset Toggle whether to reset assets after retrieving * or not. */ public function getAssets($reset = true) { $assets = $this->assets; if ($reset) { $this->assets = []; } return $assets; } /** * Add assets to the queue of MediaEmbed plugin * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function addAssets($assets, $append = true) { // Append or reset assets if (!$append) { $this->assets = []; } // Wrap non-array assets in an array if (!is_array($assets)) { $assets = array($assets); } // Merge assets $assets = array_merge($this->assets, $assets); // Remove duplicates $this->assets = array_keys(array_flip($assets)); } /** * Add assets to the queue of MediaEmbed plugin * * Alias for `addAssets` * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function add($assets, $append = true) { return $this->addAssets($assets, $append); } /** * Add assets to the queue of MediaEmbed plugin * * Alias for `addAssets` * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function addCss($assets, $append = true) { return $this->addAssets($assets, $append); } /** * Add assets to the queue of MediaEmbed plugin * * Alias for `addAssets` * * @param array $assets An array of assets to add. * @param boolean $append Append assets to array or reset assets. */ public function addJs($assets, $append = true) { return $this->addAssets($assets, $append); } /** ------------------------------- * Private/protected helper methods * -------------------------------- */ /** * Get cached media or media with key. * * @param string $key The key to load from the cache. * @return mixed The media content. */ protected function getCachedMedia($key) { /** @var Cache $cache */ $cache = $grav['cache']; // Check, if cache should be used or not if ($this->config->get('cache.enabled')) { // Get cache id and try to fetch data $cache_id = md5('mediaembed' . $key . $cache->getKey()); $data = $cache->fetch($cache_id); if ((false === $data) || (time() > $data['expire'])) { // Pack and provide data with a time stamp. $data = array( 'content' => $this->service->embed($key), 'expire' => time() + $this->config->get('cache.lifetime'), ); $cache->save($cache_id, $data); } // Return data contents $content = $data['content']; } else { // Just call callback and return result $content = $this->service->embed($key); } return $content; } protected function parseUrl($url) { if (!filter_var($url, FILTER_VALIDATE_URL)) { return []; } // Parse URL $url = html_entity_decode($url, ENT_COMPAT | ENT_HTML401, 'UTF-8'); $parts = parse_url($url); $parts['url'] = $url; // Get top-level domain from URL $parts['domain'] = isset($parts['host']) ? $parts['host'] : ''; if ( preg_match('~(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$~i', $parts['domain'], $match) ) { $parts['domain'] = $match['domain']; } if (isset($parts['query'])) { parse_str(urldecode($parts['query']), $parts['query']); } $parts['query'] = []; return $parts; } /** * Reset MathJax class */ protected function reset() { $this->hashes = []; } /** * Hash a given text. * * Called whenever a tag must be hashed when a function insert an * atomic element in the text stream. Passing $text to through this * function gives a unique text-token which will be reverted back when * calling unhash. * * @param string $text The text to be hashed * @param string $type The type (category) the text should be saved * * @return string Return a unique text-token which will be * reverted back when calling unhash. */ protected function hash($text, $data = []) { static $counter = 0; // Swap back any tag hash found in $text so we do not have to `unhash` // multiple times at the end. $text = $this->unhash($text); // Then hash the block $key = implode('::', array('mediaembed', $this->id, ++$counter, 'M')); $this->hashes[$key] = [$text, $data]; // String that will replace the tag return $key; } /** * Swap back in all the tags hashed by hash. * * @param string $text The text to be un-hashed * * @return string A text containing no hash inside */ protected function unhash($text) { $text = preg_replace_callback( '~mediaembed::([0-9a-z]+)::([0-9]+)::M~i', function($atches) { return $this->hashes[$matches[0]][0]; }, $text); return $text; } }