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<?php |
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/* |
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* Plugin Name: Auto Versioning Support |
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* Plugin URI: https://github.com/pothi/wordpress-mu-plugins |
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* Version: 0.2 |
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* Description: Support for automating versioning of CSS and JS files |
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* Author Name: Pothi Kalimuthu |
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* Author URI: http://pothi.info |
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*/ |
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if ( !class_exists('AutoVersioning') ) { |
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/** |
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* This class enables automatic versioning of CSS/JS by adding file modification time to the URLs. |
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* @see http://stackoverflow.com/questions/118884/ |
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*/ |
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class AutoVersioning { |
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private static $version_in_filename = false; |
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/** |
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* An auto-versioning wrapper for wp_register_s*() and wp_enqueue_s*() dependency APIs. |
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* |
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* @static |
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* @param string $wp_api_function The name of the WP dependency API to call. |
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* @param string $handle Script or stylesheet handle. |
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* @param string $src Script or stylesheet URL. |
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* @param array $deps Dependencies. |
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* @param bool|string $last_param Either $media (for wp_register_style) or $in_footer (for wp_register_script). |
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* @param bool $add_ver_to_filename TRUE = add version to filename, FALSE = add it to the query string. |
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*/ |
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public static function add_dependency($wp_api_function, $handle, $src, $deps, $last_param, $add_ver_to_filename = false ) { |
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list($src, $version) = self::auto_version($src, $add_ver_to_filename); |
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call_user_func($wp_api_function, $handle, $src, $deps, $version, $last_param); |
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} |
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/** |
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* Automatically version a script or style sheet URL based on file modification time. |
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* |
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* Returns auto-versioned $src and $ver values suitable for use with WordPress dependency APIs like |
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* wp_register_script() and wp_register_style(). |
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* |
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* @static |
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* @param string $url |
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* @param bool $add_ver_to_filename |
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* @return array array($url, $version) |
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*/ |
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private static function auto_version($url, $add_ver_to_filename = false) { |
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$version = false; |
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$filename = self::guess_filename_from_url($url); |
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if ( ($filename !== null) && is_file($filename) ) { |
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$mtime = filemtime($filename); |
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if ( $add_ver_to_filename ) { |
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$url = preg_replace('@\.([^./\?]+)(\?.*)?$@', '.' . $mtime . '.$1', $url); |
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$version = null; |
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} else { |
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$version = $mtime; |
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} |
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} |
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return array($url, $version); |
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} |
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/** |
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* @param string $url |
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* |
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* @return string |
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*/ |
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private static function guess_filename_from_url($url) { |
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$url_mappings = array( |
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plugins_url() => WP_PLUGIN_DIR, |
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plugins_url('', WPMU_PLUGIN_DIR . '/dummy') => WPMU_PLUGIN_DIR, |
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get_stylesheet_directory_uri() => get_stylesheet_directory(), |
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get_template_directory_uri() => get_template_directory(), |
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content_url() => WP_CONTENT_DIR, |
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site_url('/' . WPINC) => ABSPATH . WPINC, |
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); |
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$filename = null; |
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foreach($url_mappings as $root_url => $directory) { |
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if ( strpos($url, $root_url) === 0 ) { |
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$filename = $directory . '/' . substr($url, strlen($root_url)); |
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//Get rid of the query string, if any. |
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list($filename, ) = explode('?', $filename, 2); |
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break; |
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} |
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} |
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return $filename; |
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} |
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/** |
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* Apply automatic versioning to all scripts and style sheets added using WP dependency APIs. |
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* |
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* If you set $add_ver_to_filename to TRUE, make sure to also add the following code to your |
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* .htaccess file or your site may break: |
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* |
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* <IfModule mod_rewrite.c> |
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* RewriteEngine On |
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* RewriteRule ^(.*)\.[\d]{10}\.(css|js)$ $1.$2 [L] |
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* </IfModule> |
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* |
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* @static |
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* @param bool $add_ver_to_filename |
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*/ |
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public static function apply_to_all_dependencies($add_ver_to_filename = false) { |
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self::$version_in_filename = $add_ver_to_filename; |
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foreach(array('script_loader_src', 'style_loader_src') as $hook) { |
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add_filter($hook, __CLASS__ . '::_filter_dependency_src', 10, 1); |
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} |
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} |
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public static function _filter_dependency_src($src) { |
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//Only add version info to CSS/JS files that don't already have it in the file name. |
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if ( preg_match('@(?<!\.\d{10})\.(css|js)(\?|$)@i', $src) ) { |
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list($src, $version) = self::auto_version($src, self::$version_in_filename); |
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if ( !empty($version) ) { |
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$src = add_query_arg('ver', $version, $src); |
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} |
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} |
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return $src; |
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} |
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} |
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} //class_exists() |
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if ( !function_exists('wp_register_auto_versioned_script') ) { |
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function wp_register_auto_versioned_script($handle, $src, $deps = array(), $in_footer = false, $add_ver_to_filename = false) { |
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AutoVersioning::add_dependency('wp_register_script', $handle, $src, $deps, $in_footer, $add_ver_to_filename); |
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} |
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} |
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if ( !function_exists('wp_register_auto_versioned_style') ) { |
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function wp_register_auto_versioned_style( $handle, $src, $deps = array(), $media = 'all', $add_ver_to_filename = false) { |
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AutoVersioning::add_dependency('wp_register_style', $handle, $src, $deps, $media, $add_ver_to_filename); |
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} |
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} |
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if ( !function_exists('wp_enqueue_auto_versioned_script') ) { |
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function wp_enqueue_auto_versioned_script( $handle, $src, $deps = array(), $in_footer = false, $add_ver_to_filename = false ) { |
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AutoVersioning::add_dependency('wp_enqueue_script', $handle, $src, $deps, $in_footer, $add_ver_to_filename); |
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} |
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} |
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if ( !function_exists('wp_enqueue_auto_versioned_style') ) { |
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function wp_enqueue_auto_versioned_style( $handle, $src, $deps = array(), $media = 'all', $add_ver_to_filename = false ) { |
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AutoVersioning::add_dependency('wp_enqueue_style', $handle, $src, $deps, $media, $add_ver_to_filename); |
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} |
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} |
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AutoVersioning::apply_to_all_dependencies( true ); |
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pothi /
wp-mu-plugins
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