193 lines
6.4 KiB
PHP
193 lines
6.4 KiB
PHP
<?php
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if (!defined('ABSPATH')) die('No direct access allowed');
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if (!class_exists('WP_Optimize_Minify_Functions')) {
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include WP_OPTIMIZE_MINIFY_DIR.'/class-wp-optimize-minify-functions.php';
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}
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class WP_Optimize_Minify_Print {
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/**
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* Load the script using loadAsync JavaScript
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*
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* @param string $href
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* @param boolean $print
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* @return string|void
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*/
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public static function async_script($href, $print = true) {
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$wpo_minify_options = wp_optimize_minify_config()->get();
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$tag = '<script>' . "\n";
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$user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
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$tag .= 'var wpo_server_info_js = ' . json_encode(array("user_agent" => $user_agent)) . "\n";
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$exclude_js_from_page_speed_tools = $wpo_minify_options['exclude_js_from_page_speed_tools'];
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$enable_defer_js = $wpo_minify_options['enable_defer_js'];
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$is_conditional_loading = $exclude_js_from_page_speed_tools && 'all' !== $enable_defer_js;
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if ($is_conditional_loading) {
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$tag .= 'if (!(navigator.userAgent + " " + wpo_server_info_js.user_agent).match(/' . implode("|", $wpo_minify_options['ualist']) .'/i)) {' . "\n";
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}
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$tag .= " loadAsync('$href', null);" . "\n";
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if ($is_conditional_loading) {
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$tag .= '}';
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}
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$tag .= '</script>' . "\n";
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if ($print) {
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echo $tag;
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} else {
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return $tag;
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}
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}
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/**
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* Print a style that will be loaded async using 'preload'
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*
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* @param string $href
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* @param string $media
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* @return void
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*/
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public static function async_style($href, $media = 'all') {
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echo '<link rel="preload" href="'.$href.'" as="style" media="'.$media.'" onload="this.onload=null;this.rel=\'stylesheet\'">' . "\n";
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// fix for firefox not supporting preload
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echo '<link rel="stylesheet" href="'.$href.'" media="'.$media.'">' . "\n";
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echo '<noscript><link rel="stylesheet" href="'.$href.'" media="'.$media.'"></noscript>' . "\n";
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echo '<!--[if IE]><link rel="stylesheet" href="'.$href.'" media="'.$media.'"><![endif]-->' . "\n";
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}
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/**
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* Print a style that will be loaded by JS
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*
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* @param string $href
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* @return void
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*/
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public static function exclude_style($href) {
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$wpo_minify_options = wp_optimize_minify_config()->get();
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// make a stylesheet, hide from PageSpeedIndex
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$cssguid = 'wpo_min'.hash('adler32', $href);
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$tag = '<script>' . "\n";
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$user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
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$tag .= 'var wpo_server_info_css = ' . json_encode(array("user_agent" => $user_agent)) . "\n";
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$exclude_css_from_page_speed_tools = $wpo_minify_options['exclude_css_from_page_speed_tools'];
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if ($exclude_css_from_page_speed_tools) {
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$tag .= 'if (!(navigator.userAgent + " " + wpo_server_info_css.user_agent).match(/'.implode('|', $wpo_minify_options['ualist']).'/i)){' . "\n";
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}
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$tag .= ' var '.$cssguid.'=document.createElement("link");'.$cssguid.'.rel="stylesheet",'.$cssguid.'.type="text/css",'.$cssguid.'.media="async",'.$cssguid.'.href="'.$href.'",'.$cssguid.'.onload=function() {'.$cssguid.'.media="all"},document.getElementsByTagName("head")[0].appendChild('.$cssguid.');' . "\n";
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if ($exclude_css_from_page_speed_tools) {
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$tag .= '}';
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}
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$tag .= '</script>' . "\n";
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echo $tag;
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}
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/**
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* Inline a single style
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*
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* @param string $handle
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* @param string $href
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* @return boolean
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*/
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public static function inline_style($handle, $href) {
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$wpo_minify_options = wp_optimize_minify_config()->get();
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// font awesome processing, inline
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// download, minify, cache
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$tkey = 'css-'.hash('adler32', $href).'.css';
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$json = WP_Optimize_Minify_Cache_Functions::get_transient($tkey);
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if (false === $json) {
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$json = WP_Optimize_Minify_Functions::download_and_minify($href, null, $wpo_minify_options['enable_css_minification'], 'css', $handle);
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if ($wpo_minify_options['debug']) {
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echo "<!-- wpo_min DEBUG: Uncached file processing now for $href -->" . "\n";
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}
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WP_Optimize_Minify_Cache_Functions::set_transient($tkey, $json);
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}
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// decode
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$res = json_decode($json, true);
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// add font-display
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// https://developers.google.com/web/updates/2016/02/font-display
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$res['code'] = str_ireplace('font-style:normal;', 'font-display:block;font-style:normal;', $res['code']);
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// inline css or fail
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if (false != $res['status']) {
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echo '<style type="text/css" media="all">' . "\n";
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echo $res['code'] . "\n";
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echo '</style>' . "\n";
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return true;
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} else {
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return false;
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}
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}
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/**
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* Print a normal style tag pointing the href
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*
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* @param string $href
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* @return void
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*/
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public static function style($href) {
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echo '<link rel="stylesheet" href="'.$href.'" media="all">' . "\n";
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}
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/**
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* Write header
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*
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* @param string $file
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* @param string $headers
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* @return void
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*/
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public static function write_header($file, $headers) {
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file_put_contents($file, $headers);
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WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file);
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}
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/**
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* Write CSS
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*
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* @param string $file
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* @param string $code
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* @param string $log
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* @return void
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*/
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public static function write_combined_asset($file, $code, $log) {
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file_put_contents($file.'.json', json_encode($log));
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file_put_contents($file, $code);
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// permissions
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WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file.'.json');
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WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file);
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if (function_exists('gzencode')) {
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file_put_contents($file.'.gz', gzencode(file_get_contents($file), 9));
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WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file.'.gz');
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}
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// brotli static support
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if (function_exists('brotli_compress')) {
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file_put_contents($file.'.br', brotli_compress(file_get_contents($file), 11));
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WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file.'.br');
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}
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}
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/**
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* Load async scripts with callback
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*
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* @return void
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*/
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public static function add_load_async() {
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$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
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$contents = file_get_contents(trailingslashit(WPO_PLUGIN_MAIN_PATH) . "js/loadAsync$min_or_not_internal.js");
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echo "<script>$contents</script>\n";
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}
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/**
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* Defer CSS globally from the header (order matters)
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* Dev: https://www.filamentgroup.com/lab/async-css.html
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*
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* @return void
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*/
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public static function add_load_css() {
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$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
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$contents = file_get_contents(trailingslashit(WPO_PLUGIN_MAIN_PATH) . "js/loadCSS$min_or_not_internal.js");
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echo "<script>$contents</script>" . "\n";
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}
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}
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