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<?php |
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if (!defined('ABSPATH')) die('No direct access allowed'); |
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|
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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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|
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class WP_Optimize_Minify_Print { |
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|
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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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$tag = '<script>' . "\n"; |
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$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.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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|
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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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/** |
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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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/** |
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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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$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.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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/** |
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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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|
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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, $json); |
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} |
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|
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// decode |
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$res = json_decode($json, true); |
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|
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// add font-display |
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// https://developers.google.com/web/updates/2016/02/font-display |
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$res['code'] = str_ireplace('font-style:normal;', 'font-display:block;font-style:normal;', $res['code']); |
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|
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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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/** |
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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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/** |
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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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/** |
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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($file); |
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|
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if (function_exists('gzencode')) { |
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file_put_contents($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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|
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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>$contents</script>\n"; |
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} |
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|
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/** |
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* Defer CSS globally from the header (order matters) |
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* Dev: https://www.filamentgroup.com/lab/async-css.html |
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* |
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* @return void |
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*/ |
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public static function add_load_css() { |
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$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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