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<?php |
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|
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if (!defined('WPO_VERSION')) die('No direct access allowed'); |
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|
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require_once WPO_PLUGIN_MAIN_PATH . 'includes/class-wp-optimize-htaccess.php'; |
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|
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if (!class_exists('WP_Optimize_WebP')) : |
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|
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class WP_Optimize_WebP { |
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|
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private $_htaccess = null; |
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|
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private $_server_info_instance; |
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|
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private $_rewrite_status = false; |
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|
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/** |
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* Constructor |
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*/ |
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public function __construct() { |
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$this->set_converter_status(); |
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$this->set_server_info_instance(); |
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$this->set_rewrite_status(); |
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$this->set_webp_serve_method(); |
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} |
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|
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/** |
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* Returns singleton instance |
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* |
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* @return WP_Optimize_WebP |
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*/ |
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public static function get_instance() { |
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static $instance = null; |
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if (null === $instance) { |
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$instance = new WP_Optimize_WebP(); |
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} |
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return $instance; |
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} |
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|
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/** |
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* Test Run and find converter status |
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*/ |
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public function set_converter_status() { |
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include_once WPO_PLUGIN_MAIN_PATH . 'webp/class-wpo-webp-test-run.php'; |
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$converters = WP_Optimize()->get_options()->get_option('webp_converters', false); |
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|
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if (empty($converters)) { |
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$converter_status = WPO_WebP_Test_Run::get_converter_status(); |
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WP_Optimize()->get_options()->update_option('webp_converters', $converter_status['working_converters']); |
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} |
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} |
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|
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/** |
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* Sets server info instance variable |
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*/ |
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private function set_server_info_instance() { |
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if (!class_exists('WPO_Server_Info')) { |
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require_once(WPO_PLUGIN_MAIN_PATH . 'webp/class-wpo-server-info.php'); |
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} |
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$this->_server_info_instance = WPO_Server_Info::get_instance(); |
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} |
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|
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/** |
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* Sets server's rewrite status |
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*/ |
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private function set_rewrite_status() { |
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$this->_rewrite_status = $this->_server_info_instance->get_rewrite_status(); |
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} |
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|
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/** |
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* Sets how webp images are served |
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*/ |
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private function set_webp_serve_method() { |
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if (true === $this->_rewrite_status) { |
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$this->use_htaccess(); |
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} else { |
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$this->use_alter_html(); |
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} |
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} |
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|
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/** |
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* Setup .htaccess method |
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*/ |
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private function use_htaccess() { |
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$options = Updraft_Smush_Manager()->get_smush_options(); |
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$webp_conversion_enabled = isset($options['webp_conversion']) ? $options['webp_conversion'] : false; |
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$this->save_htaccess_rules($webp_conversion_enabled); |
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} |
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|
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/** |
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* Setup alter html method |
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*/ |
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private function use_alter_html() { |
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// To be continued in another part |
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// add_action('template_direct', array('')); |
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} |
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|
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/** |
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* Save .htaccess rules |
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* |
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* @return bool |
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*/ |
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public function save_htaccess_rules($webp_conversion_enabled = false) { |
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$wp_uploads = wp_get_upload_dir(); |
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$htaccess_file = $wp_uploads['basedir'] . '/.htaccess'; |
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if (!file_exists($htaccess_file)) { |
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file_put_contents($htaccess_file, ''); |
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} |
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$htaccess_comment_section = 'WP-Optimize WebP Rules'; |
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$this->_htaccess = new WP_Optimize_Htaccess($htaccess_file); |
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|
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if ($this->_htaccess->is_exists() && !$webp_conversion_enabled) { |
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$this->_htaccess->remove_commented_section($htaccess_comment_section); |
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$this->_htaccess->write_file(); |
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return true; |
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} |
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if ($this->_htaccess->is_commented_section_exists($htaccess_comment_section)) return false; |
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$this->_htaccess->update_commented_section($this->prepare_webp_htaccess_rules(), $htaccess_comment_section); |
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$this->_htaccess->write_file(); |
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return true; |
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} |
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|
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/** |
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* Prepare array of htaccess rules to use webp images. |
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* |
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* @return array |
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*/ |
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private function prepare_webp_htaccess_rules() { |
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return array( |
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array( |
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'<IfModule mod_rewrite.c>', |
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'RewriteEngine On', |
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'', |
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'# Redirect to existing converted image in same dir (if browser supports webp)', |
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'RewriteCond %{HTTP_ACCEPT} image/webp', |
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'RewriteCond %{REQUEST_FILENAME} (?i)(.*)(\.jpe?g|\.png)$', |
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'RewriteCond %1%2\.webp -f', |
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'RewriteRule (?i)(.*)(\.jpe?g|\.png)$ %1%2\.webp [T=image/webp,E=EXISTING:1,E=ADDVARY:1,L]', |
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'', |
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'# Make sure that browsers which does not support webp also gets the Vary:Accept header', |
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'# when requesting images that would be redirected to webp on browsers that does.', |
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array( |
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'<IfModule mod_headers.c>', |
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array( |
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'<FilesMatch "(?i)\.(jpe?g|png)$">', |
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'Header append "Vary" "Accept"', |
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'</FilesMatch>', |
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), |
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'</IfModule>', |
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), |
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'', |
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'</IfModule>', |
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'', |
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), |
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array( |
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'# Rules for handling requests for webp images', |
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'# ---------------------------------------------', |
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'', |
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'# Set Vary:Accept header if we came here by way of our redirect, which set the ADDVARY environment variable', |
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'# The purpose is to make proxies and CDNs aware that the response varies with the Accept header', |
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'<IfModule mod_headers.c>', |
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array( |
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'<IfModule mod_setenvif.c>', |
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'# Apache appends "REDIRECT_" in front of the environment variables defined in mod_rewrite, but LiteSpeed does not', |
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'# So, the next lines are for Apache, in order to set environment variables without "REDIRECT_"', |
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'SetEnvIf REDIRECT_EXISTING 1 EXISTING=1', |
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'SetEnvIf REDIRECT_ADDVARY 1 ADDVARY=1', |
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'', |
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'Header append "Vary" "Accept" env=ADDVARY', |
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'', |
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'# Set X-WPO-WebP header for diagnose purposes', |
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'Header set "X-WPO-WebP" "Redirected directly to existing webp" env=EXISTING', |
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'</IfModule>', |
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), |
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'</IfModule>', |
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), |
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array( |
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'# Register webp mime type', |
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'<IfModule mod_mime.c>', |
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'AddType image/webp .webp', |
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'</IfModule>', |
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), |
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); |
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} |
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} |
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|
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endif; |
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|
