. */ if (!class_exists('WPMinify')) { class WPMinify { var $author_homepage = 'http://omninoggin.com/'; var $homepage = 'http://omninoggin.com/wordpress-plugins/wp-minify-wordpress-plugin/'; var $name = 'wp_minify'; var $name_dashed = 'wp-minify'; var $name_proper = 'WP Minify'; var $required_wp_version = '2.7'; var $version = '0.6.5'; var $c = null; var $debug = false; var $cache_location = 'wp-content/plugins/wp-minify/cache/'; var $url_len_limit = 2000; var $minify_limit = 50; var $buffer_started = false; var $default_exclude = array('https://'); function WPMinify() { // initialize common functions $this->c = new WPMinifyCommon($this); // load translation $this->c->load_text_domain(); // register admin scripts add_action('admin_init', array($this->c, 'a_register_scripts')); add_action('admin_init', array($this->c, 'a_register_styles')); // check wp version add_action('admin_head', array($this->c, 'a_check_version')); // load admin menu add_action('admin_menu', array($this, 'a_menu')); if (!is_admin()) { // No need to minify admin stuff add_action('init', array($this, 'pre_content'), 99999); add_action('wp_footer', array($this, 'post_content')); // advertise hook add_action('wp_footer', array($this, 'advertise')); } } // admin functions function a_default_options() { return array( 'cache_interval' => 900, 'enable_css' => true, 'css_exclude' => array(), 'css_include' => array(), 'debug' => false, 'enable_js' => true, 'js_exclude' => array(), 'js_include' => array(), 'show_link' => true, 'version' => $this->version, 'wp_path' => '' ); } function a_update_options() { // new options $wpm_new_options = stripslashes_deep($_POST['wpm_options_update']); // current options $wpm_current_options = get_option($this->name); // convert "on" to true and "off" to false for checkbox fields // and set defaults for fields that are left blank if ( isset($wpm_new_options['show_link']) && $wpm_new_options['show_link'] == "on") $wpm_new_options['show_link'] = true; else $wpm_new_options['show_link'] = false; if ( isset($wpm_new_options['enable_js']) ) $wpm_new_options['enable_js'] = true; else $wpm_new_options['enable_js'] = false; if ( isset($wpm_new_options['enable_css']) ) $wpm_new_options['enable_css'] = true; else $wpm_new_options['enable_css'] = false; if ( isset($wpm_new_options['debug']) ) $wpm_new_options['debug'] = true; else $wpm_new_options['debug'] = false; if ( strlen(trim($wpm_new_options['js_include'])) > 0 ) $wpm_new_options['js_include'] = $this->array_trim(split(chr(10), str_replace(chr(13), '', $wpm_new_options['js_include']))); else $wpm_new_options['js_include'] = array(); if ( strlen(trim($wpm_new_options['js_exclude'])) > 0 ) $wpm_new_options['js_exclude'] = $this->array_trim(split(chr(10), str_replace(chr(13), '', $wpm_new_options['js_exclude']))); else $wpm_new_options['js_exclude'] = array(); if ( strlen(trim($wpm_new_options['css_include'])) > 0 ) $wpm_new_options['css_include'] = $this->array_trim(split(chr(10), str_replace(chr(13), '', $wpm_new_options['css_include']))); else $wpm_new_options['css_include'] = array(); if ( strlen(trim($wpm_new_options['css_exclude'])) > 0 ) $wpm_new_options['css_exclude'] = $this->array_trim(split(chr(10), str_replace(chr(13), '', $wpm_new_options['css_exclude']))); else $wpm_new_options['css_exclude'] = array(); // Update options foreach($wpm_new_options as $key => $value) { $wpm_current_options[$key] = $value; } update_option($this->name, $wpm_current_options); } function a_request_handler() { if (isset($_POST['wpm_options_update_submit'])) { check_admin_referer($this->name); $this->a_update_options(); add_action('admin_notices', array($this->c, 'a_notify_updated')); } elseif (isset($_POST['wpm_options_clear_cache_submit'])) { // if user wants to regenerate nonce check_admin_referer($this->name); $this->c->a_clear_cache(); add_action('admin_notices', array($this->c, 'a_notify_cache_cleared')); } elseif (isset($_POST['wpm_options_upgrade_submit'])) { // if user wants to upgrade options (for new options on version upgrades) check_admin_referer($this->name); $this->c->a_upgrade_options(); add_action('admin_notices', array($this->c, 'a_notify_upgraded')); } elseif (isset($_POST['wpm_options_reset_submit'])) { // if user wants to reset all options check_admin_referer($this->name); $this->c->a_reset_options(); add_action('admin_notices', array($this->c, 'a_notify_reset')); } // only check these on plugin settings page $this->c->a_check_dir_writable($this->c->get_plugin_dir().'cache/', array($this, 'a_notify_cache_not_writable')); $this->c->a_check_orphan_options(array($this, 'a_notify_orphan_options')); if ($this->c->a_check_dir_writable($this->c->get_plugin_dir().'min/config.php', array($this, 'a_notify_config_not_writable'))) { $this->a_check_minify_config(); } } function a_check_minify_config() { $fname = $this->c->get_plugin_dir().'min/config.php'; $fhandle = fopen($fname,'r'); $content = fread($fhandle,filesize($fname)); preg_match('/\/\/###WPM-CACHE-PATH-BEFORE###(.*)\/\/###WPM-CACHE-PATH-AFTER###/s', $content, $matches); $cache_path_code = $matches[1]; if (!preg_match('/\$min_cachePath.*?/', $cache_path_code)) { $content = preg_replace( '/\/\/###WPM-CACHE-PATH-BEFORE###(.*)\/\/###WPM-CACHE-PATH-AFTER###/s', "//###WPM-CACHE-PATH-BEFORE###\n".'$min_cachePath = \''.$this->c->get_plugin_dir()."cache/';\n//###WPM-CACHE-PATH-AFTER###", $content); $this->a_notify_modified_minify_config(); } $fhandle = fopen($fname,"w"); fwrite($fhandle,$content); fclose($fhandle); } function a_notify_cache_not_writable() { $this->c->a_notify( sprintf('%s: %s', __('Cache directory is not writable. Please grant your server write permissions to the directory', $this->name), $this->c->get_plugin_dir().'cache/'), true); } function a_notify_config_not_writable() { $this->c->a_notify( sprintf('%s: %s', __('Minify Engine config.php is not writable. Please grant your server write permissions to file', $this->name), $this->c->get_plugin_dir().'min/config.php')); } function a_notify_orphan_options() { $this->c->a_notify( sprintf('%s   ', __('Some option settings are missing (possibly from plugin upgrade). Please reactivate.', $this->name), __('Reactivate', $this->name))); } function a_notify_modified_minify_config() { $this->c->a_notify( __('Minify Engine config.php was configured automatically.', $this->name)); } function a_menu() { $options_page = add_options_page($this->name_proper, $this->name_proper, 'manage_options', 'wp-minify', array($this, 'a_page')); add_action('admin_head-'.$options_page, array($this, 'a_request_handler')); add_action('admin_print_scripts-'.$options_page, array($this->c, 'a_enqueue_scripts')); add_action('admin_print_styles-'.$options_page, array($this->c, 'a_enqueue_styles')); } function a_page() { $wpm_options = get_option($this->name); printf('

%s

%s |  %s
', __('WP Minify Options', $this->name), __('General Configuration', $this->name), __('Documentation', $this->name) ); printf('
'); if ( isset($_GET['wpm-page']) ) { if ( $_GET['wpm-page'] || !$_GET['wpm-page'] ) { require_once('options-generic.php'); } } else { require_once('options-generic.php'); } printf('
'); // omni_admin_main require_once('options-sidebar.php'); printf('
'); // wrap } // admin_page() // other functions function fetch_and_cache($url, $cache_file) { $ch = curl_init(); $timeout = 5; // set to zero for no timeout curl_setopt ($ch, CURLOPT_URL, $url); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $content = curl_exec($ch); curl_close($ch); if ( $content ) { if ( is_array($content) ) { $content = implode($content); } // save cache file $fh = fopen($cache_file, 'w'); if ( $fh ) { fwrite($fh, $content); fclose($fh); } else { // cannot open for write. no error b/c something else is probably writing to the file. } return $content; } else { printf( '%s: '.$url.'. %s', __('Error: Could not fetch and cache URL'), __('You might need to exclude this file in WP Minify options.') ); return ''; } } function refetch_cache_if_expired($url, $cache_file) { $wpm_options = get_option($this->name); $cache_file_mtime = filemtime($cache_file); if ( (time() - $cache_file_mtime) > $wpm_options['cache_interval'] ) { $this->fetch_and_cache($url, $cache_file); } } function tiny_filename($str) { $f = __FILE__; // no fancy shortening for Windows return ('/' === $f[0]) ? strtr(base64_encode(md5($str, true)), '+/=', '-_(') : md5($str); } function array_trim($arr, $charlist=null){ foreach($arr as $key => $value){ if (is_array($value)) $result[$key] = array_trim($value, $charlist); else $result[$key] = trim($value, $charlist); } return $result; } function check_and_split_url($url) { $wpm_options = get_option($this->name); // append &debug if we need to if ( $wpm_options['debug'] ) { $debug_url = '&debug=true'; } else { $debug_url = ''; } $url_chunk = explode('?f=', $url); $base_url = array_shift($url_chunk); $files = explode(',', array_shift($url_chunk)); $num_files = sizeof($files); if ( $url > $this->url_len_limit or $num_files > $this->minify_limit ) { $first_half = $this->check_and_split_url($base_url . '?f=' . implode(',', array_slice($files, 0, $num_files/2))); $second_half = $this->check_and_split_url($base_url . '?f=' . implode(',', array_slice($files, $num_files/2))); return $first_half + $second_half; } else { return array($base_url . '?f=' . implode(',', $files) . $debug_url); } } function fetch_content($url, $type) { $wpm_options = get_option($this->name); $cache_file = $this->c->get_plugin_dir().'cache/'.md5($url).$type; $content = ''; if ( file_exists($cache_file) ) { // check cache expiration $this->refetch_cache_if_expired($url, $cache_file); $fh = fopen($cache_file, 'r'); if ( $fh && filesize($cache_file) > 0 ) { $content = fread($fh, filesize($cache_file)); fclose($fh); } else { // cannot open cache file so fetch it $content = $this->fetch_and_cache($url, $cache_file); } } else { // no cache file. fetch from internet and save to local cache $content = $this->fetch_and_cache($url, $cache_file); } return $content; } function get_script_src_from_handle($handle) { global $wp_scripts; $ver = $wp_scripts->registered[$handle]->ver ? $wp_scripts->registered[$handle]->ver : $wp_scripts->default_version; if ( isset($wp_scripts->args[$handle]) ) $ver .= '&' . $wp_scripts->args[$handle]; $src = $wp_scripts->registered[$handle]->src; if ( !preg_match('|^https?://|', $src) && !preg_match('|^' . preg_quote(WP_CONTENT_URL) . '|', $src) ) { $src = $wp_scripts->base_url . $src; } $src = add_query_arg('ver', $ver, $src); $src = clean_url(apply_filters( 'script_loader_src', $src, $handle )); $wp_scripts->print_scripts_l10n( $handle ); return $src; } function get_js_location($src) { if ( $this->debug ) echo 'Script URL:'.$src."
\n"; $wpm_options = get_option($this->name); $site_url = trailingslashit(get_option('siteurl')); $num_matches = preg_match('/^https?:\/\/.*?\//', $site_url, $matches); $domain = $num_matches>0? $matches[0] : $site_url; // domain if found; the "slashed" site url otherwise $script_path = str_replace($domain, '', $src); // relative paths only for local urls $script_path = preg_replace('/^\//', '', $script_path); // strip front / if any $script_path = preg_replace('/\?.*/i', '', $script_path); // throws away parameters, if any if ( substr($script_path, 0, 4) != 'http' && substr($script_path, -3, 3) == '.js' ) { // if script is local to server if ( $this->debug ) echo 'Local script detected:'.$script_path."
\n"; $location = $script_path; } else { // fetch scripts if necessary $this->fetch_content($src, '.js'); $location = $this->cache_location . md5($src) . '.js'; } return trailingslashit($wpm_options['wp_path']) . $location; } function get_css_location($src) { if ( $this->debug ) echo 'Style URL:'.$src."
\n"; $wpm_options = get_option($this->name); $site_url = trailingslashit(get_option('siteurl')); $num_matches = preg_match('/^https?:\/\/.*?\//', $site_url, $matches); $domain = $num_matches>0? $matches[0] : $site_url; // domain if found; the "slashed" site url otherwise $css_path = str_replace($domain, '', $src); // relative paths only for local urls $css_path = preg_replace('/^\//', '', $css_path); // strip front / if any $css_path = preg_replace('/\?.*/i', '', $css_path); // throws away parameters, if any if ( substr($css_path, 0, 4) != 'http' && substr($css_path, -4, 4) == '.css' ) { // if css is local to server if ( $this->debug ) echo 'Local css detected:'.$css_path."
\n"; $location = $css_path; } else { // fetch css if necessary $this->fetch_content($src, '.css'); $location = $this->cache_location . md5($src) . '.css'; } return trailingslashit($wpm_options['wp_path']) . $location; } function build_minify_urls($locations) { $minify_url = $this->c->get_plugin_url().'min/?f='; $minify_url .= implode(',', $locations); return $this->check_and_split_url($minify_url); } function extract_css($content) { $wpm_options = get_option($this->name); $css_locations = array(); preg_match_all('/]*?)>/i', $content, $link_tags_match); foreach ($link_tags_match[0] as $link_tag) { if ( strpos(strtolower($link_tag), 'stylesheet') ) { // check CSS media type if ( !strpos(strtolower($link_tag), 'media=' ) || preg_match('/media=["\'](?:["\']|[^"\']*?(all|screen)[^"\']*?["\'])/', $link_tag ) ) { preg_match('/href=[\'"]([^\'"]+)/', $link_tag, $href_match); if ( $href_match[1] ) { // do not include anything in excluded list $skip = false; $exclusions = array_merge($this->default_exclude, $wpm_options['css_exclude']); foreach ($exclusions as $exclude_pat) { $exclude_pat = trim($exclude_pat); if ( strlen($exclude_pat) > 0 && strpos($href_match[1], $exclude_pat) !== false ) { $skip = true; break; } } if ( $skip ) continue; $content = str_replace($link_tag . '', '', $content); $content = str_replace($link_tag, '', $content); $css_locations[] = $this->get_css_location($href_match[1]); } } } } foreach ($wpm_options['css_include'] as $src) { $css_locations[] = $this->get_css_location($src); } return array($content, $css_locations); } function inject_css($content, $css_locations) { if ( count($css_locations) > 0 ) { // build minify URLS $css_tags = ''; $minify_urls = $this->build_minify_urls($css_locations); foreach ($minify_urls as $minify_url) { if ( $this->debug ) echo 'Minify URL:'.$minify_url; $css_tags .= ""; } // HTML5 has
tags so account for those in regex $content = preg_replace('/|\s[^>]*?>)/', "\\0\n$css_tags", $content, 1); // limit 1 replacement } return $content; } function extract_conditionals($content) { preg_match_all('//is', $content, $conditionals_match); $content = preg_replace('//is', '###WPM-CSS-CONDITIONAL###', $content); $conditionals = array(); foreach ($conditionals_match[0] as $conditional) { $conditionals[] = $conditional; } return array($content, $conditionals); } function inject_conditionals($content, $conditionals) { while (count($conditionals) > 0 && strpos($content, '###WPM-CSS-CONDITIONAL###')) { $conditional = array_shift($conditionals); $content = preg_replace('/###WPM-CSS-CONDITIONAL###/', $conditional, $content, 1); } return $content; } function extract_js($content) { $wpm_options = get_option($this->name); $js_locations = array(); preg_match_all('/]*?)><\/script>/i', $content, $script_tags_match); foreach ($script_tags_match[0] as $script_tag) { if(strpos(strtolower($script_tag), 'text/javascript') !== false) { preg_match('/src=[\'"]([^\'"]+)/', $script_tag, $src_match); if ( $src_match[1] ) { // do not include anything in excluded list $skip = false; $exclusions = array_merge($this->default_exclude, $wpm_options['js_exclude']); foreach ($exclusions as $exclude_pat) { $exclude_pat = trim($exclude_pat); if ( strlen($exclude_pat) > 0 && strpos($src_match[1], $exclude_pat) !== false ) { $skip = true; break; } } if ( $skip ) continue; $content = str_replace($script_tag, '', $content); $js_locations[] = $this->get_js_location($src_match[1]); } } } foreach ($wpm_options['js_include'] as $src) { $js_locations[] = $this->get_js_location($src); } return array($content, $js_locations); } function inject_js($content, $js_locations) { if ( count($js_locations) > 0 ) { // build minify URLS $js_tags = ''; $minify_urls = $this->build_minify_urls($js_locations); foreach ($minify_urls as $minify_url) { if ( $this->debug ) echo 'Minify URL:'.$minify_url; $js_tags .= ""; } // HTML5 has
tags so account for those in regex $content = preg_replace('/|\s[^>]*?>)/', "\\0\n$js_tags", $content, 1); // limit 1 replacement } return $content; } function pre_content() { ob_start(); // variable for sanity checking $this->buffer_started = true; } function post_content() { // sanity checking if($this->buffer_started) { $content = ob_get_contents(); ob_end_clean(); $wpm_options = get_option($this->name); // minify JS if($wpm_options['enable_js']) { list($content, $js_locations) = $this->extract_js($content); $content = $this->inject_js($content, $js_locations); } // minify CSS (make sure to exclude CSS conditionals) if($wpm_options['enable_css']) { list($content, $conditionals) = $this->extract_conditionals($content); list($content, $css_locations) = $this->extract_css($content); $content = $this->inject_css($content, $css_locations); $content = $this->inject_conditionals($content, $conditionals); } // output page echo $content; } } function advertise() { $wpm_options = get_option($this->name); if ($wpm_options['show_link']) { printf("

Page optimized by $this->name_proper WordPress Plugin

"); } } } // class wpm } // if !class_exists('WPMinify') require_once('common.php'); if (class_exists('WPMinify')) { $wp_minify = new WPMinify(); } ?>