| 1 |
<?php |
| 2 |
if (!defined('ABSPATH')) exit; |
| 3 |
|
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use BerqWP_Deps\voku\helper\HtmlDomParser; |
| 5 |
|
| 6 |
class berqUsedCSS { |
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|
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private static $html = null; |
| 9 |
|
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public $combine_css = ''; |
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public $domain = ''; |
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public $site_url = ''; |
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public $js_classes = []; |
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|
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static $forceExclude = [ |
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'/:focus[^)]/', |
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'/:hover[^)]/', |
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]; |
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static $forceInclude = [ |
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'/\[.*\$.*=.*\]/', |
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// '/:has\(.*?\)/', |
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// '/:not\(.*?\)/', |
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// '/:is\(.*?\)/', |
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// '/:where\(.*?\)/', |
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// '/^\:is/', |
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// '/^\:where/', |
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'/\.elementor-motion-effects-element-type-background/', |
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'/\.swiper-wrapper/', |
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'/\.woocommerce-js/', |
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'/\.et_pb_menu__logo img/', |
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'/\.tns-/', |
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'/\.woocommerce-js/', |
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'/\.dtb-hamburger/', |
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'/\.elementor-social-icon/', |
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'/\.visible/', |
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'/^\.td-js-loaded/', |
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'/^\.lte-navwrapper-mobile/', |
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'/^\.lte-navbar-items.navbar-mobile/', |
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'/^\.navbar-mobile/', |
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'/^\.theme-menu-mode-responsive/', |
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'/^\.theme-menu-responsive-button/', |
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'/^\.stk-video-background/', |
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'/^\.is-menu.is-dropdown/', |
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'/^\.animated/', |
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'/^\.et_pb_animation/', |
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'/^\.et_animated/', |
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'/^\.et_mobile_menu/', |
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'/^\.awb-menu.collapse-enabled/', |
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'/^\.collapse-enabled/', |
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'/^\.do-animate/', |
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'/^\.ast-header-break-point/', |
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'/^\.plus-canvas-content-wrap/', |
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'/^\.elementor-element:where/', |
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'/^\.bounce/', |
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'/^\.bounceIn/', |
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'/^\.bounceInDown/', |
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'/^\.bounceInLeft/', |
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'/^\.bounceInRight/', |
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'/^\.bounceInUp/', |
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'/^\.e-animation-bob/', |
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'/^\.e-animation-bounce-in/', |
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'/^\.e-animation-bounce-out/', |
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'/^\.e-animation-buzz-out/', |
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'/^\.e-animation-buzz/', |
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'/^\.e-animation-float/', |
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'/^\.e-animation-grow-rotate/', |
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'/^\.e-animation-grow/', |
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'/^\.e-animation-hang/', |
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'/^\.e-animation-pop/', |
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'/^\.e-animation-pulse-grow/', |
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'/^\.e-animation-pulse-shrink/', |
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'/^\.e-animation-pulse/', |
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'/^\.e-animation-push/', |
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'/^\.e-animation-rotate/', |
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'/^\.e-animation-shrink/', |
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'/^\.e-animation-sink/', |
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'/^\.e-animation-skew-backward/', |
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'/^\.e-animation-skew-forward/', |
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'/^\.e-animation-skew/', |
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'/^\.e-animation-wobble-bottom/', |
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'/^\.e-animation-wobble-horizontal/', |
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'/^\.e-animation-wobble-skew/', |
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'/^\.e-animation-wobble-to-bottom-right/', |
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'/^\.e-animation-wobble-to-top-right/', |
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'/^\.e-animation-wobble-top/', |
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'/^\.e-animation-wobble-vertical/', |
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'/^\.fadeIn/', |
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'/^\.fadeInDown/', |
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'/^\.fadeInLeft/', |
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'/^\.fadeInRight/', |
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'/^\.fadeInUp/', |
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'/^\.flash/', |
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'/^\.headShake/', |
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'/^\.jello/', |
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'/^\.lightSpeedIn/', |
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'/^\.pulse/', |
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'/^\.rollIn/', |
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'/^\.rotateIn/', |
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'/^\.rotateInDownLeft/', |
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'/^\.rotateInDownRight/', |
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'/^\.rotateInUpLeft/', |
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'/^\.rotateInUpRight/', |
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'/^\.rubberBand/', |
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'/^\.shake/', |
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'/^\.slideInDown/', |
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'/^\.slideInLeft/', |
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'/^\.slideInRight/', |
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'/^\.slideInUp/', |
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'/^\.swing/', |
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'/^\.tada/', |
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'/^\.wobble/', |
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'/^\.zoomIn/', |
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'/^\.zoomInDown/', |
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'/^\.zoomInLeft/', |
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'/^\.zoomInRight/', |
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'/^\.zoomInUp/', |
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]; |
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|
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function __construct($site_url) { |
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$this->site_url = $site_url; |
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} |
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|
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function forceInclude($selectors) { |
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self::$forceInclude = array_merge(self::$forceInclude, $selectors); |
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} |
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|
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function process_css($html) |
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{ |
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|
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// self::$html = $this->cleanHtml($html); |
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self::$html = $html; |
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$selectors = []; |
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// $this->js_classes = $this->get_js_selector_classes($html); |
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|
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$dom = HtmlDomParser::str_get_html($html); |
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$used_fonts = []; |
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$used_font_weights = [ |
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'normal' => 1, |
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'400' => 1, |
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]; |
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$used_css = ''; |
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|
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foreach ($dom->find('style') as $style) { |
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$style->setAttribute('data-berqwp-critical-css', '1'); |
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} |
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|
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// mark stylesheet links |
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foreach ($dom->find('link') as $link) { |
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$rel = strtolower($link->rel ?? ''); |
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$as = strtolower($link->as ?? ''); |
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|
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if ($rel === 'stylesheet' || $as === 'style') { |
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$link->setAttribute('data-berqwp-critical-css', '1'); |
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} |
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} |
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|
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$nodes = $dom->find('[data-berqwp-critical-css="1"]'); |
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|
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|
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foreach ($nodes as $css_node) { |
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$local_css = ''; |
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|
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if ($css_node->tag == 'style') { |
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$local_css = "@media all { ".$css_node->innertext." } "; |
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|
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} |
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|
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if ($css_node->tag == 'link') { |
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|
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$href = $css_node->href ?? ''; |
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$media = $css_node->media ?? ''; |
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$onload = $css_node->onload ?? ''; |
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|
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if ($onload === "this.media='all'") { |
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$media = 'all'; |
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} |
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|
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if ($onload === "this.media='all';this.onload=null;") { |
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$media = 'all'; |
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} |
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|
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if ($media === 'print') { |
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continue; |
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} |
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|
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if (!self::is_valid_asset($href)) { |
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continue; |
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} |
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|
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// convert to abs |
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$baseUrl = self::getBaseUrl($this->site_url); |
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$href = self::rel2abs($href, $baseUrl); |
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|
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$response = self::fetch($href); |
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|
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if ($response === false) { |
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continue; |
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} |
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|
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$local_css .= $response; |
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} |
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|
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if (!empty($local_css)) { |
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$matches = self::extractUrlsFromCss($local_css); |
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|
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foreach ($matches as $url) { |
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$url = trim($url); |
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|
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if (!empty($url) && self::is_valid_asset($url)) { |
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$local_css = $this->replace_url($url, self::rel2abs($url, $href), $local_css); |
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} |
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} |
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|
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if (!empty($media) && $media !== 'screen') { |
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$local_css = "@media $media {{$local_css}}"; |
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} |
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|
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$this->combine_css .= $local_css; |
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|
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$css = $this->extract_used_css($local_css, $selectors); |
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$css = $this->minify_css($css); |
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$css = preg_replace('/@media[^{]+\{\s*\}/i', '', $css); |
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$css = preg_replace('/@@+/', '', $css); |
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$used_css .= $css; |
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|
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preg_match_all("/font-family\s*:\s*([^!;}]+)/", $css, $mf); |
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preg_match_all("/font-weight\s*:\s*([^!;}]+)/", $css, $mw); |
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|
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if (!empty($mf)) { |
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|
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foreach ($mf[1] as $ff) { |
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if (strpos($ff, ',') !== false) { |
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|
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foreach (explode(',', $ff) as $fm) { |
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$fm = trim($fm, " \t\n\r\0\x0B'\""); |
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$used_fonts[$fm] = 1; |
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} |
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} else { |
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$fm = trim($ff, " \t\n\r\0\x0B'\""); |
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$used_fonts[$fm] = 1; |
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} |
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} |
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|
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foreach ($mw[1] as $fw) { |
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$weight = trim($fw, " \t\n\r\0\x0B'\""); |
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$used_font_weights[$weight] = 1; |
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} |
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} |
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|
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|
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// Insert style tag before the link tag |
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$style_tag = '<style data-berqwp="inline" data-berqwp-critical-inline="1">' . $css . '</style>'; |
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$css_node->outertext = $style_tag . $css_node->outertext; |
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} |
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} |
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|
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$font_faces = $this->used_font_faces($used_fonts, $used_font_weights); |
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|
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$font_faces = str_replace('font-display:block;', 'font-display:swap;', $font_faces); |
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$font_faces = str_replace('font-style:', 'font-display:swap;font-style:', $font_faces); |
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|
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// $used_keyframes = $this->used_keyframes($used_css); |
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// $used_varirables = $this->extract_used_variables($used_css); |
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|
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// if (!empty($used_varirables)) { |
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// $used_varirables = ':root{' . implode(';', $used_varirables) . '}'; |
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// } else { |
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// $used_varirables = ''; |
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// } |
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|
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return $used_css . $font_faces; |
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|
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} |
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|
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function has_cache($url) |
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{ |
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|
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$path = WP_CONTENT_DIR . '/cache/berqwp/external/'; |
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|
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if (!is_dir($path)) { |
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if (!wp_mkdir_p($path)) { |
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return false; |
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} |
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} |
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|
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$file_name = md5($url) . '.gz'; |
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$file_path = $path . $file_name; |
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|
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// return is_file($file_path) && !empty(@filemtime($file_path)) && @filemtime($file_path) > (time() - DAY_IN_SECONDS); |
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return is_file($file_path) && !empty(@filemtime($file_path)) && @filemtime($file_path) > (time() - DAY_IN_SECONDS); |
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// return is_file($file_path); |
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} |
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|
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function cache_asset($url, $content) |
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{ |
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$path = WP_CONTENT_DIR . '/cache/berqwp/external/'; |
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|
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if (!is_dir($path)) { |
| 299 |
if (!wp_mkdir_p($path)) { |
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return false; |
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} |
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} |
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|
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$file_name = md5($url) . '.gz'; |
| 305 |
|
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return file_put_contents($path . $file_name, gzencode($content, 9), LOCK_EX); |
| 307 |
} |
| 308 |
|
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function cache_miss($url) |
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{ |
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$path = WP_CONTENT_DIR . '/cache/berqwp/external/'; |
| 312 |
if (!is_dir($path)) { |
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if (!wp_mkdir_p($path)) return false; |
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} |
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return file_put_contents($path . md5($url) . '.gz', gzencode('berqwp-404', 9), LOCK_EX); |
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} |
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|
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function is_cached_miss($url) |
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{ |
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if (!$this->has_cache($url)) return false; |
| 321 |
return $this->get_cache($url) === 'berqwp-404'; |
| 322 |
} |
| 323 |
|
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function get_cache($url) |
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{ |
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$path = WP_CONTENT_DIR . '/cache/berqwp/external/'; |
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|
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if (!is_dir($path)) { |
| 329 |
if (!wp_mkdir_p($path)) { |
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return false; |
| 331 |
} |
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} |
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|
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$file_name = md5($url) . '.gz'; |
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|
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return gzdecode(file_get_contents($path . $file_name)); |
| 337 |
} |
| 338 |
|
| 339 |
function fetch($url) |
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{ |
| 341 |
|
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$local_css = ''; |
| 343 |
|
| 344 |
if ($this->is_self_hosted_url($url)) { |
| 345 |
if ($this->is_cached_miss($url)) { |
| 346 |
return false; |
| 347 |
} |
| 348 |
$local_path = $this->url_to_path($url); |
| 349 |
if ($local_path && is_file($local_path)) { |
| 350 |
return file_get_contents($local_path); |
| 351 |
} |
| 352 |
$this->cache_miss($url); |
| 353 |
return false; |
| 354 |
} |
| 355 |
|
| 356 |
if ($this->is_cached_miss($url)) { |
| 357 |
return false; |
| 358 |
} |
| 359 |
|
| 360 |
if ($this->has_cache($url)) { |
| 361 |
$local_css = $this->get_cache($url); |
| 362 |
} else { |
| 363 |
|
| 364 |
$response = wp_remote_get($url, ['timeout' => 30]); |
| 365 |
$is_valid_response = wp_remote_retrieve_response_code($response) >= 200 && wp_remote_retrieve_response_code($response) < 400; |
| 366 |
|
| 367 |
if (is_wp_error($response) || !$is_valid_response) { |
| 368 |
$this->cache_miss($url); |
| 369 |
return false; |
| 370 |
} |
| 371 |
|
| 372 |
$local_css = wp_remote_retrieve_body($response); |
| 373 |
|
| 374 |
// preg_match_all("/@import\s+url\(([^)]+)[^;]+;/", $local_css, $matches); |
| 375 |
preg_match_all('/@import\s+(?:url\s*\(\s*[\'"]?([^\'")]+)[\'"]?\s*\)|[\'"]([^\'";]+)[\'"])/', $local_css, $matches); |
| 376 |
|
| 377 |
if (!empty($matches[1])) { |
| 378 |
foreach ($matches[1] as $import_css_url) { |
| 379 |
$import_css_url = trim($import_css_url, " \t\n\r\0\x0B'\""); |
| 380 |
|
| 381 |
$baseUrl = self::getBaseUrl($url); |
| 382 |
$import_css_url = self::rel2abs($import_css_url, $baseUrl); |
| 383 |
|
| 384 |
if (!self::is_valid_asset($import_css_url)) { |
| 385 |
continue; |
| 386 |
} |
| 387 |
|
| 388 |
$sub_response = self::fetch($import_css_url); |
| 389 |
|
| 390 |
if ($sub_response === false) { |
| 391 |
continue; |
| 392 |
} |
| 393 |
|
| 394 |
$url_matches = self::extractUrlsFromCss($sub_response); |
| 395 |
|
| 396 |
foreach ($url_matches as $url_func) { |
| 397 |
$url_func = trim($url_func); |
| 398 |
|
| 399 |
if (!empty($url_func)) { |
| 400 |
// $sub_response = str_replace($url_func, self::rel2abs($url_func, $import_css_url), $sub_response); |
| 401 |
$sub_response = $this->replace_url($url_func, self::rel2abs($url_func, $import_css_url), $sub_response); |
| 402 |
} |
| 403 |
} |
| 404 |
|
| 405 |
$local_css .= $sub_response; |
| 406 |
} |
| 407 |
} |
| 408 |
|
| 409 |
$this->cache_asset($url, $local_css); |
| 410 |
} |
| 411 |
|
| 412 |
return $local_css; |
| 413 |
} |
| 414 |
|
| 415 |
function replace_url($search, $replace, $content) |
| 416 |
{ |
| 417 |
|
| 418 |
// match with single quotes |
| 419 |
if (strpos($content, "'$search'") !== false) { |
| 420 |
$content = str_replace("'$search'", "'$replace'", $content); |
| 421 |
} |
| 422 |
|
| 423 |
// match double quotes |
| 424 |
if (strpos($content, "\"$search\"") !== false) { |
| 425 |
$content = str_replace("\"$search\"", "\"$replace\"", $content); |
| 426 |
} |
| 427 |
|
| 428 |
// match brakets |
| 429 |
if (strpos($content, "($search)") !== false) { |
| 430 |
$content = str_replace("($search)", "($replace)", $content); |
| 431 |
} |
| 432 |
|
| 433 |
// match spaces |
| 434 |
if (strpos($content, " $search ") !== false) { |
| 435 |
$content = str_replace(" $search ", " $replace ", $content); |
| 436 |
} |
| 437 |
|
| 438 |
return $content; |
| 439 |
} |
| 440 |
|
| 441 |
static function is_valid_asset($url) |
| 442 |
{ |
| 443 |
return strpos($url, 'data:') === false; |
| 444 |
} |
| 445 |
|
| 446 |
public static function rel2abs($rel, $base) |
| 447 |
{ |
| 448 |
/* return if already absolute URL */ |
| 449 |
if (parse_url($rel, PHP_URL_SCHEME) != '') |
| 450 |
return $rel; |
| 451 |
|
| 452 |
// Return with base scheme if protocol-relative (starts with //) |
| 453 |
if (strpos($rel, '//') === 0) { |
| 454 |
$scheme = parse_url($base, PHP_URL_SCHEME) ?: 'https'; |
| 455 |
return $scheme . ':' . $rel; |
| 456 |
} |
| 457 |
|
| 458 |
/* queries and anchors */ |
| 459 |
if ($rel[0] == '#' || $rel[0] == '?') |
| 460 |
return $base . $rel; |
| 461 |
|
| 462 |
/* parse base URL and convert to local variables: |
| 463 |
$scheme, $host, $path */ |
| 464 |
extract(parse_url($base)); |
| 465 |
|
| 466 |
/* remove non-directory element from path */ |
| 467 |
$path = preg_replace('#/[^/]*$#', '', $path); |
| 468 |
|
| 469 |
/* destroy path if relative url points to root */ |
| 470 |
if ($rel[0] == '/') |
| 471 |
$path = ''; |
| 472 |
|
| 473 |
/* dirty absolute URL */ |
| 474 |
$abs = "$host$path/$rel"; |
| 475 |
|
| 476 |
/* replace '//' or '/./' or '/foo/../' with '/' */ |
| 477 |
$re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#'); |
| 478 |
for ($n = 1; $n > 0; $abs = preg_replace($re, '/', $abs, -1, $n)) { |
| 479 |
} |
| 480 |
|
| 481 |
/* absolute URL is ready! */ |
| 482 |
return $scheme . '://' . $abs; |
| 483 |
} |
| 484 |
|
| 485 |
public static function getBaseUrl($fileUrl) |
| 486 |
{ |
| 487 |
// Parse the URL and get its components |
| 488 |
$parsedUrl = parse_url($fileUrl); |
| 489 |
$scheme = isset($parsedUrl['scheme']) ? $parsedUrl['scheme'] . '://' : ''; |
| 490 |
$host = isset($parsedUrl['host']) ? $parsedUrl['host'] : ''; |
| 491 |
$path = isset($parsedUrl['path']) ? $parsedUrl['path'] : ''; |
| 492 |
|
| 493 |
// Remove the file name from the path to get the base URL |
| 494 |
$basePath = preg_replace('/\/[^\/]+$/', '/', $path); |
| 495 |
|
| 496 |
// Construct the base URL |
| 497 |
return $scheme . $host . $basePath; |
| 498 |
} |
| 499 |
|
| 500 |
public static function extractUrlsFromCss($cssContent) |
| 501 |
{ |
| 502 |
$urls = []; |
| 503 |
$pattern = '/url\((.*?)\)/i'; |
| 504 |
|
| 505 |
preg_match_all($pattern, $cssContent, $matches); |
| 506 |
|
| 507 |
if (!empty($matches[1])) { |
| 508 |
foreach ($matches[1] as $match) { |
| 509 |
$urls[] = trim($match, '\'" '); |
| 510 |
} |
| 511 |
} |
| 512 |
|
| 513 |
return $urls; |
| 514 |
} |
| 515 |
|
| 516 |
function is_self_hosted_url($url) |
| 517 |
{ |
| 518 |
if (empty($url)) { |
| 519 |
return false; |
| 520 |
} |
| 521 |
|
| 522 |
// Relative URLs are self-hosted |
| 523 |
if (strpos($url, '//') === false) { |
| 524 |
return true; |
| 525 |
} |
| 526 |
|
| 527 |
$site_host = wp_parse_url(site_url(), PHP_URL_HOST); |
| 528 |
$url_host = wp_parse_url($url, PHP_URL_HOST); |
| 529 |
|
| 530 |
return $site_host && $url_host && strtolower($site_host) === strtolower($url_host); |
| 531 |
} |
| 532 |
|
| 533 |
function url_to_path($url) |
| 534 |
{ |
| 535 |
|
| 536 |
if (strpos($url, '?') !== false) { |
| 537 |
$url = explode('?', $url)[0]; |
| 538 |
} |
| 539 |
|
| 540 |
// Handle relative URLs |
| 541 |
if (strpos($url, '//') === 0) { |
| 542 |
return realpath(ABSPATH . ltrim($url, '/')); |
| 543 |
} |
| 544 |
|
| 545 |
$content_url = content_url(); |
| 546 |
$content_dir = WP_CONTENT_DIR; |
| 547 |
|
| 548 |
if (strpos($url, $content_url) === 0) { |
| 549 |
// var_dump(realpath( |
| 550 |
// str_replace($content_url, $content_dir, $url) |
| 551 |
// )); |
| 552 |
return str_replace($content_url, $content_dir, $url); |
| 553 |
} |
| 554 |
|
| 555 |
// Fallback for site root files |
| 556 |
$site_url = get_site_url('/'); |
| 557 |
|
| 558 |
if (strpos($url, $site_url) === 0) { |
| 559 |
return realpath( |
| 560 |
str_replace($site_url, ABSPATH, $url) |
| 561 |
); |
| 562 |
} |
| 563 |
|
| 564 |
return false; |
| 565 |
} |
| 566 |
|
| 567 |
function used_font_faces($used_fonts, $used_font_weights) |
| 568 |
{ |
| 569 |
|
| 570 |
preg_match_all("/@font-face\s*{[^}]*}/", $this->combine_css, $matches); |
| 571 |
$fonts = $matches[0]; |
| 572 |
$all_fonts = []; |
| 573 |
$used_font_faces = ''; |
| 574 |
|
| 575 |
foreach ($fonts as $font) { |
| 576 |
preg_match("/font-family\s*:\s*([^;}]+)/", $font, $mf); |
| 577 |
preg_match("/font-weight\s*:\s*([^;}]+)/", $font, $mw); |
| 578 |
|
| 579 |
$family = trim($mf[1], " \t\n\r\0\x0B'\""); |
| 580 |
$weight = trim($mw[1], " \t\n\r\0\x0B'\""); |
| 581 |
|
| 582 |
if (!empty($used_fonts[$family]) && !empty($used_font_weights[$weight])) { |
| 583 |
$used_font_faces .= $font; |
| 584 |
} |
| 585 |
|
| 586 |
unset($font); |
| 587 |
} |
| 588 |
|
| 589 |
return $used_font_faces; |
| 590 |
} |
| 591 |
|
| 592 |
function used_keyframes($used_css) |
| 593 |
{ |
| 594 |
preg_match_all('/animation\s*:\s*([^\s!;}]+)/', $used_css, $matches); |
| 595 |
|
| 596 |
if (empty($matches[1])) { |
| 597 |
return ''; |
| 598 |
} |
| 599 |
|
| 600 |
$key_frame_css = ''; |
| 601 |
$used_keyframe_names = []; |
| 602 |
|
| 603 |
foreach ($matches[1] as $animation_name) { |
| 604 |
$animation_name = trim($animation_name); |
| 605 |
$used_keyframe_names[$animation_name] = 1; |
| 606 |
} |
| 607 |
|
| 608 |
$captured = 0; |
| 609 |
|
| 610 |
preg_match_all('/@keyframes\s+[\w-]+\s*\{(?:[^{}]*|\{[^{}]*\})*\}/', $this->combine_css, $keyframe_matches); |
| 611 |
|
| 612 |
if (!empty($keyframe_matches)) { |
| 613 |
foreach ($keyframe_matches[0] as $keyframe) { |
| 614 |
|
| 615 |
|
| 616 |
// if ($captured === count($used_keyframe_names)) { |
| 617 |
// break; |
| 618 |
// } |
| 619 |
|
| 620 |
preg_match('/@keyframes\s+([^\s{]+)/', $keyframe, $kf_name_match); |
| 621 |
|
| 622 |
if (isset($used_keyframe_names[$kf_name_match[1]])) { |
| 623 |
$key_frame_css .= $keyframe; |
| 624 |
$captured++; |
| 625 |
} |
| 626 |
} |
| 627 |
} |
| 628 |
|
| 629 |
return $key_frame_css; |
| 630 |
} |
| 631 |
|
| 632 |
function extract_used_variables($used_css) |
| 633 |
{ |
| 634 |
|
| 635 |
// preg_match_all("/var\s*\(\s*([^\s)]+)/", $used_css, $matches); |
| 636 |
preg_match_all("/var\s*\(\s*([^)]+)/", $used_css, $matches); |
| 637 |
|
| 638 |
if (!empty($matches[1])) { |
| 639 |
foreach ($matches[1] as $index => $value) { |
| 640 |
if (strpos($value, ',') !== false) { |
| 641 |
foreach (explode(',', $value) as $new_dec) { |
| 642 |
$matches[1][] = trim($new_dec); |
| 643 |
} |
| 644 |
unset($matches[1][$index]); |
| 645 |
} |
| 646 |
} |
| 647 |
return $this->extract_variable_declarations($matches[1]); |
| 648 |
} |
| 649 |
} |
| 650 |
|
| 651 |
function extract_variable_declarations($variables) |
| 652 |
{ |
| 653 |
|
| 654 |
$variables = array_map(function ($item) { |
| 655 |
return trim($item); |
| 656 |
}, $variables); |
| 657 |
|
| 658 |
$variables = array_unique($variables); |
| 659 |
$variable_proerties = []; |
| 660 |
// preg_match_all("/:root\s*{([^;}]+)/", $this->combine_css, $matches); |
| 661 |
preg_match_all("/:root\s*{\s*([^}]+)/", $this->combine_css, $matches); |
| 662 |
|
| 663 |
|
| 664 |
// collected nested var() in :root |
| 665 |
foreach ($matches[1] as $properties) { |
| 666 |
$prop_arr = explode(';', $properties); |
| 667 |
$prop_arr = array_filter($prop_arr, function ($property) use ($properties, &$variables) { |
| 668 |
$property_name = explode(':', $property)[0]; |
| 669 |
$property_value = trim(explode(':', $property)[1]); |
| 670 |
|
| 671 |
if (!empty($property_value) && strpos($property_value, 'var(') !== false) { |
| 672 |
preg_match_all("/var\s*\(\s*([^)]+)/", $property_value, $var_matches); |
| 673 |
|
| 674 |
foreach ($var_matches[1] as $index => $value) { |
| 675 |
if (strpos($value, ',') !== false) { |
| 676 |
foreach (explode(',', $value) as $new_dec) { |
| 677 |
$var_matches[1][] = trim($new_dec); |
| 678 |
} |
| 679 |
unset($var_matches[1][$index]); |
| 680 |
} |
| 681 |
} |
| 682 |
|
| 683 |
$variables = array_merge($variables, $var_matches[1]); |
| 684 |
} |
| 685 |
|
| 686 |
return !empty(trim($property_name)) && in_array(trim($property_name), $variables); |
| 687 |
}); |
| 688 |
} |
| 689 |
|
| 690 |
$variables = array_unique($variables); |
| 691 |
|
| 692 |
foreach ($matches[1] as $properties) { |
| 693 |
$prop_arr = explode(';', $properties); |
| 694 |
$prop_arr = array_filter($prop_arr, function ($property) use ($variables) { |
| 695 |
$property_name = explode(':', $property)[0]; |
| 696 |
$property_value = trim(explode(':', $property)[1]); |
| 697 |
|
| 698 |
if (!empty(trim($property_name)) && strpos(trim($property_name), '--') !== 0) { |
| 699 |
return true; |
| 700 |
} |
| 701 |
|
| 702 |
return !empty(trim($property_name)) && in_array(trim($property_name), $variables); |
| 703 |
}); |
| 704 |
|
| 705 |
if (!empty($prop_arr)) { |
| 706 |
foreach ($prop_arr as $prop) { |
| 707 |
$variable_proerties[] = $prop; |
| 708 |
} |
| 709 |
} |
| 710 |
} |
| 711 |
|
| 712 |
return $variable_proerties; |
| 713 |
// return $this->extract_used_variables(); |
| 714 |
} |
| 715 |
|
| 716 |
function cleanHtml($buffer) { |
| 717 |
$dom = HtmlDomParser::str_get_html($buffer); |
| 718 |
|
| 719 |
// Remove tags |
| 720 |
foreach ($dom->find('meta, style, script, noscript, link') as $node) { |
| 721 |
$node->outertext = ''; |
| 722 |
} |
| 723 |
|
| 724 |
// Strip the head tag but keep body intact |
| 725 |
// $head = $dom->find('head', 0); |
| 726 |
// if ($head) { |
| 727 |
// $head->innertext = ''; // Only safe after children are already emptied |
| 728 |
// } |
| 729 |
|
| 730 |
return (string) $dom; |
| 731 |
} |
| 732 |
|
| 733 |
static function next_token($sel, $current = 0) |
| 734 |
{ |
| 735 |
// $tokens = [' ', '.', '#', '>', '+', '~']; |
| 736 |
$tokens = [' ', '.', '#']; |
| 737 |
// $tokens = ['.', '#',]; |
| 738 |
$characters = str_split($sel); |
| 739 |
|
| 740 |
foreach ($characters as $index => $char) { |
| 741 |
|
| 742 |
if ($index >= $current && in_array($char, $tokens)) { |
| 743 |
|
| 744 |
if (!isset($characters[$index - 1])) { |
| 745 |
continue; |
| 746 |
} |
| 747 |
|
| 748 |
if ($char === '.' && $characters[$index - 1] === "\\") { |
| 749 |
continue; |
| 750 |
} |
| 751 |
|
| 752 |
if ($char === '#' && $characters[$index - 1] === "\\") { |
| 753 |
continue; |
| 754 |
} |
| 755 |
|
| 756 |
return ['char' => $char, 'pos' => $index]; |
| 757 |
} |
| 758 |
} |
| 759 |
|
| 760 |
return false; |
| 761 |
} |
| 762 |
|
| 763 |
private static function matches_js_class($class, $js_classes) |
| 764 |
{ |
| 765 |
foreach ($js_classes as $pattern) { |
| 766 |
// Check if pattern ends with wildcard |
| 767 |
if (substr($pattern, -1) === '*') { |
| 768 |
// Wildcard pattern - check if class starts with prefix |
| 769 |
$prefix = substr($pattern, 0, -1); // Remove the '*' |
| 770 |
if (strpos($class, $prefix) === 0) { |
| 771 |
return true; |
| 772 |
} |
| 773 |
} else { |
| 774 |
// Exact match |
| 775 |
if ($class === $pattern) { |
| 776 |
return true; |
| 777 |
} |
| 778 |
} |
| 779 |
} |
| 780 |
|
| 781 |
return false; |
| 782 |
} |
| 783 |
|
| 784 |
|
| 785 |
private static function is_selector_used($selector, $html_selectors, $js_classes = [], $js_classes_hash = '') |
| 786 |
{ |
| 787 |
|
| 788 |
if (empty($selector)) { |
| 789 |
return false; |
| 790 |
} |
| 791 |
|
| 792 |
// forece exclude |
| 793 |
foreach (self::$forceExclude as $keyword) { |
| 794 |
if (preg_match($keyword, $selector)) { |
| 795 |
return false; |
| 796 |
} |
| 797 |
} |
| 798 |
|
| 799 |
// var_dump($selector); |
| 800 |
|
| 801 |
if ($selector == ':root') { |
| 802 |
return true; |
| 803 |
} |
| 804 |
|
| 805 |
// force include |
| 806 |
foreach (self::$forceInclude as $keyword) { |
| 807 |
if (preg_match($keyword, $selector)) { |
| 808 |
return true; |
| 809 |
} |
| 810 |
} |
| 811 |
|
| 812 |
// eliminate false negatives (:not(), pseudo, etc...) |
| 813 |
// $selector = preg_replace('/(?<!\\\\)::?[a-zA-Z0-9_-]+(\(.+?\))?/', '', $selector); |
| 814 |
$selector = preg_replace('/:{1,2}[a-zA-Z-]+(\((?:[^()]*|\([^()]*\))*\))?/', '', $selector); |
| 815 |
$selector = trim($selector); // Remove leading/trailing spaces after pseudo-element removal |
| 816 |
|
| 817 |
// Return false if selector is empty after cleanup |
| 818 |
if (empty($selector)) { |
| 819 |
return true; |
| 820 |
} |
| 821 |
|
| 822 |
$selector = str_replace(' > ', ' ', $selector); |
| 823 |
$selector = str_replace('>', ' ', $selector); |
| 824 |
$selector = str_replace(' + ', ' ', $selector); |
| 825 |
$selector = str_replace('+', ' ', $selector); |
| 826 |
$selector = str_replace(' ~ ', ' ', $selector); |
| 827 |
$selector = str_replace('~', ' ', $selector); |
| 828 |
$selector = str_replace(' *', '', $selector); |
| 829 |
|
| 830 |
|
| 831 |
// $selector = str_replace("\\", '', $selector); |
| 832 |
// $selector = preg_replace('/\\\\(.)/u', '$1', $selector); |
| 833 |
|
| 834 |
// Conservative handling: keep CSS for selectors with universal selector (*) |
| 835 |
// Universal selectors require checking if ANY element exists |
| 836 |
if (strpos($selector, '*') !== false) { |
| 837 |
return true; // Keep CSS for universal selector |
| 838 |
} |
| 839 |
|
| 840 |
|
| 841 |
// var_dump($selector); |
| 842 |
// Remove JS-added classes from selector before checking |
| 843 |
// This allows checking the remaining non-JS parts of the selector |
| 844 |
|
| 845 |
if (strpos($selector, '.') !== false && !empty($js_classes)) { |
| 846 |
// var_dump($selector, $js_classes); |
| 847 |
// Extract all classes from the selector |
| 848 |
preg_match_all('/\.([a-zA-Z0-9_\\\:\\/\\-]+)/', $selector, $matches); |
| 849 |
if (!empty($matches[1])) { |
| 850 |
$has_js_class = false; |
| 851 |
|
| 852 |
foreach ($matches[1] as $class) { |
| 853 |
// Check if this class matches any JS class pattern (exact or wildcard) |
| 854 |
if (self::matches_js_class($class, $js_classes)) { |
| 855 |
// Remove this class from the selector |
| 856 |
$selector = preg_replace('/\.' . preg_quote($class, '/') . '(?=[\s.#>+~\[\]:,)]|$)/', '', $selector); |
| 857 |
$has_js_class = true; |
| 858 |
// $selector = trim($selector); |
| 859 |
} |
| 860 |
} |
| 861 |
|
| 862 |
if ($has_js_class) { |
| 863 |
|
| 864 |
// Clean up selector: remove extra spaces, leading/trailing spaces |
| 865 |
$selector = preg_replace('/\s+/', ' ', $selector); |
| 866 |
$selector = trim($selector); |
| 867 |
|
| 868 |
// var_dump($selector); |
| 869 |
// echo "<br>"; |
| 870 |
|
| 871 |
// If selector is now empty or just spaces, return true (was all JS classes) |
| 872 |
if (empty($selector)) { |
| 873 |
return true; |
| 874 |
} |
| 875 |
} |
| 876 |
} |
| 877 |
} |
| 878 |
|
| 879 |
// Handle selectors starting with HTML tags |
| 880 |
$starts_with_tag = false; |
| 881 |
$tag_name = ''; |
| 882 |
|
| 883 |
if (!in_array($selector[0], ['.', '#', ' '])) { |
| 884 |
// Extract tag name |
| 885 |
if (preg_match('/^([a-zA-Z][a-zA-Z0-9-]*)/i', $selector, $matches)) { |
| 886 |
$tag_name = strtolower($matches[1]); |
| 887 |
$tag_length = strlen($matches[1]); |
| 888 |
|
| 889 |
// Check if the tag exists in HTML |
| 890 |
// if (!isset($html_selectors['tags'][$tag_name])) { |
| 891 |
// return false; // Tag not in HTML, selector can't match |
| 892 |
// } |
| 893 |
|
| 894 |
$tag_regex = '<' . preg_quote($tag_name, '/') . '\\b[^>]*>'; |
| 895 |
|
| 896 |
if (!preg_match("/$tag_regex/", self::$html)) { |
| 897 |
// var_dump($tag_regex); |
| 898 |
return false; // Tag not in HTML, selector can't match |
| 899 |
} |
| 900 |
|
| 901 |
$starts_with_tag = true; |
| 902 |
|
| 903 |
// Remove tag from selector for token processing |
| 904 |
$selector = substr($selector, $tag_length); |
| 905 |
$selector = ltrim($selector); // Remove any leading space after tag |
| 906 |
|
| 907 |
// If nothing left after tag, return true (pure tag selector) |
| 908 |
if (empty($selector)) { |
| 909 |
return true; |
| 910 |
} |
| 911 |
} else { |
| 912 |
// Can't parse as tag, return conservative true |
| 913 |
return true; |
| 914 |
} |
| 915 |
} |
| 916 |
|
| 917 |
$token = self::next_token($selector); |
| 918 |
$reg = ''; |
| 919 |
|
| 920 |
$prev = null; |
| 921 |
$current = null; |
| 922 |
$next = null; |
| 923 |
$last_pos = -1; // Track last position |
| 924 |
$iteration_count = 0; // Track iterations |
| 925 |
$max_iterations = strlen($selector) * 1; // Reasonable max: 3 iterations per character |
| 926 |
|
| 927 |
$prev_class_pos = []; |
| 928 |
$herahicle_match = []; |
| 929 |
|
| 930 |
while ($token !== false) { |
| 931 |
$char = $token['char']; |
| 932 |
$pos = $token['pos']; |
| 933 |
|
| 934 |
// Safety check 1: Position hasn't advanced |
| 935 |
if ($pos === $last_pos) { |
| 936 |
// error_log("is_selector_used: Infinite loop detected - same position: $pos, selector: $selector"); |
| 937 |
break; |
| 938 |
} |
| 939 |
|
| 940 |
// Safety check 2: Too many iterations |
| 941 |
$iteration_count++; |
| 942 |
if ($iteration_count > $max_iterations) { |
| 943 |
// error_log("is_selector_used: Infinite loop detected - max iterations exceeded ($iteration_count), selector: $selector"); |
| 944 |
break; |
| 945 |
} |
| 946 |
|
| 947 |
$last_pos = $pos; |
| 948 |
$current = $char; |
| 949 |
|
| 950 |
// error_log("is_selector_used: Loop iteration $iteration_count - char: '$char', pos: $pos"); // DEBUG: Commented out for performance |
| 951 |
|
| 952 |
if ($char == '.') { |
| 953 |
// var_dump( $pos); |
| 954 |
// echo "<br>"; |
| 955 |
$next_token = self::next_token($selector, $pos + 1); |
| 956 |
$next = $next_token['char'] ?? false; |
| 957 |
$length = ($next_token['pos'] ?? strlen($selector)) - $pos; |
| 958 |
$class = substr($selector, $pos + 1, $length - 1); |
| 959 |
$token = $next_token; |
| 960 |
|
| 961 |
|
| 962 |
$class = preg_replace('/\\\\(.)/u', '$1', $class); |
| 963 |
// var_dump('class', $class); |
| 964 |
// if (strpos($class, '\[') === false) { |
| 965 |
|
| 966 |
// } |
| 967 |
|
| 968 |
// $class = str_replace("\\", '', $class); |
| 969 |
|
| 970 |
if (strpos($class, '\[') === false && strpos($class, '[') !== false) { |
| 971 |
|
| 972 |
preg_match_all('/\[((?:[^]]+)?)/', $class, $attr_matches); |
| 973 |
$class = preg_replace("/\[[^>\]]+]/", '', $class); |
| 974 |
|
| 975 |
foreach ($attr_matches[1] as $match) { |
| 976 |
$match = explode('=', $match)[0]; |
| 977 |
$match = preg_quote($match, '/'); |
| 978 |
$match_att = '<(?:[^>]+)?' . $match . '(?:[^>]+)?>'; |
| 979 |
|
| 980 |
if (!preg_match("/$match_att/", self::$html)) { |
| 981 |
return false; |
| 982 |
} |
| 983 |
} |
| 984 |
} |
| 985 |
|
| 986 |
$esc = preg_quote($class, '/'); |
| 987 |
|
| 988 |
// var_dump($esc); |
| 989 |
|
| 990 |
if ($prev == null && $next == ' ') { |
| 991 |
$reg .= 'class\s*=\s*[\'"](?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))[^\'"]*[\'"][^>]*>'; |
| 992 |
} |
| 993 |
|
| 994 |
if ($prev == null && $next == '.') { |
| 995 |
$reg .= 'class\s*=\s*[\'"](?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))'; |
| 996 |
} |
| 997 |
|
| 998 |
if ($prev == '.' && $next == '.') { |
| 999 |
$reg .= '(?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s))'; |
| 1000 |
} |
| 1001 |
|
| 1002 |
if ($prev == '.' && $next == ' ') { |
| 1003 |
$reg .= '(?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))(?:[^\'"]+)?[\'"][^>]*>'; |
| 1004 |
} |
| 1005 |
|
| 1006 |
if ($prev == ' ' && $next === false) { |
| 1007 |
$reg .= 'class\s*=\s*[\'"](?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))(?:[^\'"]+)?[\'"][^>]*>'; |
| 1008 |
} |
| 1009 |
|
| 1010 |
if ($prev == ' ' && $next == '.') { |
| 1011 |
$reg .= 'class\s*=\s*[\'"](?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))'; |
| 1012 |
} |
| 1013 |
|
| 1014 |
if ($prev == '.' && $next === false) { |
| 1015 |
$reg .= '(?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))(?:[^\'"]+)?[\'"]'; |
| 1016 |
} |
| 1017 |
|
| 1018 |
if ($prev == null && $next === false) { |
| 1019 |
$reg .= 'class\s*=\s*[\'"][^\'"]*' . $esc . '(?:[^\'"]+)?[\'"][^>]*>'; |
| 1020 |
} |
| 1021 |
|
| 1022 |
if ($prev == '#' && $next === ' ') { |
| 1023 |
$reg .= '.*?class\s*=\s*[\'"](?=[^"\']*(?:\s' . $esc . '|' . $esc . '\s|\b' . $esc . '\b))(?:[^\'"]+)?[\'"][^>]*>'; |
| 1024 |
} |
| 1025 |
} elseif ($char == ' ') { |
| 1026 |
$next_token = self::next_token($selector, $pos + 1); |
| 1027 |
$length = ($next_token['pos'] ?? strlen($selector)) - $pos; |
| 1028 |
$class = substr($selector, $pos + 1, $length - 1); |
| 1029 |
$next = $next_token['char'] ?? false; |
| 1030 |
$token = $next_token; |
| 1031 |
|
| 1032 |
// $reg .= ".*?<[^>]+"; |
| 1033 |
// var_dump($reg); |
| 1034 |
if (!empty($reg)) { |
| 1035 |
if (preg_match("/$reg/", self::$html, $matches)) { |
| 1036 |
$prev = $char; |
| 1037 |
// $herahicle_match[] = $reg; |
| 1038 |
$reg = ''; |
| 1039 |
} else { |
| 1040 |
return false; |
| 1041 |
} |
| 1042 |
} |
| 1043 |
} elseif ($char == '#') { |
| 1044 |
$next_token = self::next_token($selector, $pos + 1); |
| 1045 |
$next = $next_token['char'] ?? false; |
| 1046 |
$length = ($next_token['pos'] ?? strlen($selector)) - $pos; |
| 1047 |
$id = substr($selector, $pos + 1, $length - 1); |
| 1048 |
$token = $next_token; |
| 1049 |
|
| 1050 |
$id = preg_replace('/\\\\(.)/u', '$1', $id); |
| 1051 |
|
| 1052 |
if (strpos($id, '\[') === false && strpos($id, '[') !== false) { |
| 1053 |
preg_match_all('/\[((?:[^]]+)?)/', $id, $attr_matches); |
| 1054 |
$id = preg_replace("/\[[^>\]]+]/", '', $id); |
| 1055 |
|
| 1056 |
foreach ($attr_matches[1] as $match) { |
| 1057 |
$match = explode('=', $match)[0]; |
| 1058 |
$match = preg_quote($match, '/'); |
| 1059 |
$match_att = '<(?:[^>]+)?' . $match . '(?:[^>]+)?>'; |
| 1060 |
|
| 1061 |
if (!preg_match("/$match_att/", self::$html)) { |
| 1062 |
return false; |
| 1063 |
} |
| 1064 |
} |
| 1065 |
} |
| 1066 |
|
| 1067 |
$esc = preg_quote($id, '/'); |
| 1068 |
// var_dump($esc, $token['pos']); |
| 1069 |
|
| 1070 |
if ($prev == null && $next === false) { |
| 1071 |
$reg .= 'id\s*=\s*[\'"][^\'"]*' . $esc . '(?:[^\'"]+)?[\'"][^>]*>'; |
| 1072 |
} |
| 1073 |
|
| 1074 |
if ($prev == null && $next === '.') { |
| 1075 |
$reg .= 'id\s*=\s*[\'"][^\'"]*' . $esc . '[\'"]'; |
| 1076 |
} |
| 1077 |
|
| 1078 |
if ($prev == null && $next === ' ') { |
| 1079 |
$reg .= 'id\s*=\s*[\'"][^\'"]*' . $esc . '(?:[^\'"]+)?[\'"][^>]*>'; |
| 1080 |
} |
| 1081 |
|
| 1082 |
if ($prev == ' ' && $next === false) { |
| 1083 |
$reg .= 'id\s*=\s*[\'"][^\'"]*' . $esc . '(?:[^\'"]+)?[\'"][^>]*>'; |
| 1084 |
} |
| 1085 |
|
| 1086 |
if ($prev == ' ' && $next == '.') { |
| 1087 |
$reg .= 'id\s*=\s*[\'"][^\'"]*' . $esc . '(?:[^\'"]+)?[\'"]'; |
| 1088 |
} |
| 1089 |
} elseif ($char == '>' || $char == '+' || $char == '~') { |
| 1090 |
return true; |
| 1091 |
// Child combinator (>), adjacent sibling (+), and general sibling (~) |
| 1092 |
// For conservative matching, treat them like descendant combinators |
| 1093 |
$next_token = self::next_token($selector, $pos + 1); |
| 1094 |
$token = $next_token; |
| 1095 |
$next = $next_token['char'] ?? false; |
| 1096 |
$char = ' '; |
| 1097 |
|
| 1098 |
// Match any content between elements (conservative approach) |
| 1099 |
if ($prev == '.' && ($next == '.' || $next == '#')) { |
| 1100 |
$reg .= '[\s\S]*?'; |
| 1101 |
} |
| 1102 |
|
| 1103 |
if ($prev == '#' && ($next == '.' || $next == '#')) { |
| 1104 |
$reg .= '[\s\S]*?'; |
| 1105 |
} |
| 1106 |
} else { |
| 1107 |
break; |
| 1108 |
} |
| 1109 |
|
| 1110 |
$prev = $char; |
| 1111 |
} |
| 1112 |
|
| 1113 |
// If selector started with a tag, prepend tag regex to pattern |
| 1114 |
if ($starts_with_tag) { |
| 1115 |
$tag_regex = '<' . preg_quote($tag_name, '/') . '\\b[^>]*>'; |
| 1116 |
|
| 1117 |
if (!empty($reg)) { |
| 1118 |
// Tag followed by other selectors |
| 1119 |
// $reg = $tag_regex . '[\s\S]*?' . $reg; |
| 1120 |
$reg = $tag_regex; |
| 1121 |
} else { |
| 1122 |
// Pure tag selector (shouldn't reach here, but safety) |
| 1123 |
$reg = $tag_regex; |
| 1124 |
} |
| 1125 |
} |
| 1126 |
|
| 1127 |
// if (empty($reg) || $reg == ']*>') { |
| 1128 |
// return false; |
| 1129 |
// } |
| 1130 |
|
| 1131 |
$result = false; |
| 1132 |
|
| 1133 |
if (!empty($herahicle_match)) { |
| 1134 |
|
| 1135 |
if (!empty($reg)) { |
| 1136 |
$herahicle_match[] = $reg; |
| 1137 |
} |
| 1138 |
|
| 1139 |
// var_dump($herahicle_match); |
| 1140 |
// echo "<br>"; |
| 1141 |
$last_pos = 0; |
| 1142 |
|
| 1143 |
foreach ($herahicle_match as $i => $reg) { |
| 1144 |
|
| 1145 |
preg_match("/$reg/", self::$html, $matches); |
| 1146 |
|
| 1147 |
if (!empty($matches[0])) { |
| 1148 |
$strpos = strpos(self::$html, $matches[0]); |
| 1149 |
|
| 1150 |
if ($strpos === false) { |
| 1151 |
return false; |
| 1152 |
} |
| 1153 |
|
| 1154 |
if ($last_pos > 0 && $strpos < $last_pos) { |
| 1155 |
return false; |
| 1156 |
} |
| 1157 |
|
| 1158 |
$last_pos = $strpos; |
| 1159 |
|
| 1160 |
if ($last_pos > 0 && $strpos > $last_pos && ($i + 1) === count($herahicle_match)) { |
| 1161 |
return true; |
| 1162 |
} |
| 1163 |
} else { |
| 1164 |
return false; |
| 1165 |
} |
| 1166 |
} |
| 1167 |
} else { |
| 1168 |
|
| 1169 |
$result = preg_match("/$reg/", self::$html); |
| 1170 |
} |
| 1171 |
|
| 1172 |
|
| 1173 |
return $result; |
| 1174 |
} |
| 1175 |
|
| 1176 |
function get_js_selector_classes($html) |
| 1177 |
{ |
| 1178 |
|
| 1179 |
$dom = HtmlDomParser::str_get_html($html); |
| 1180 |
$used_class = [ |
| 1181 |
'woocommerce-js', |
| 1182 |
'woocommerce-product-gallery*', |
| 1183 |
'js', |
| 1184 |
]; |
| 1185 |
|
| 1186 |
foreach ($dom->find('script') as $script) { |
| 1187 |
$js_content = ''; |
| 1188 |
|
| 1189 |
// Check if script has src attribute (external JS) |
| 1190 |
$src = strtolower($script->src ?? ''); |
| 1191 |
|
| 1192 |
if (!empty($src)) { |
| 1193 |
|
| 1194 |
// convert to abs |
| 1195 |
$baseUrl = self::getBaseUrl($this->site_url); |
| 1196 |
$src = self::rel2abs($src, $baseUrl); |
| 1197 |
|
| 1198 |
if ($this->has_cache($src)) { |
| 1199 |
$js_content = $this->get_cache($src); |
| 1200 |
} else { |
| 1201 |
|
| 1202 |
$response = wp_remote_get($src, ['timeout' => 30]); |
| 1203 |
$is_valid_response = wp_remote_retrieve_response_code($response) >= 200 && wp_remote_retrieve_response_code($response) < 400; |
| 1204 |
|
| 1205 |
if (is_wp_error($response) || !$is_valid_response) { |
| 1206 |
continue; |
| 1207 |
} |
| 1208 |
|
| 1209 |
$js_content = wp_remote_retrieve_body($response); |
| 1210 |
|
| 1211 |
$this->cache_asset($src, $js_content); |
| 1212 |
} |
| 1213 |
} else { |
| 1214 |
// Inline script tag - get content directly |
| 1215 |
$js_content = $script->innertext; |
| 1216 |
} |
| 1217 |
|
| 1218 |
// Skip if no content |
| 1219 |
if (empty($js_content)) { |
| 1220 |
continue; |
| 1221 |
} |
| 1222 |
|
| 1223 |
// Search for classList.add() patterns |
| 1224 |
preg_match_all('/classList\.add\(\s*[\'"]([^\'"]+)/', $js_content, $matches); |
| 1225 |
|
| 1226 |
foreach ($matches[1] as $class) { |
| 1227 |
$used_class[] = $class; |
| 1228 |
} |
| 1229 |
|
| 1230 |
// Search for .addClass() patterns (jQuery) |
| 1231 |
preg_match_all('/\.addClass\(\s*[\'"]([^\'"]+)/', $js_content, $matches); |
| 1232 |
|
| 1233 |
foreach ($matches[1] as $class) { |
| 1234 |
$used_class[] = $class; |
| 1235 |
} |
| 1236 |
|
| 1237 |
unset($script); |
| 1238 |
} |
| 1239 |
|
| 1240 |
unset($dom); |
| 1241 |
|
| 1242 |
// return array_unique($used_class); |
| 1243 |
return $used_class; |
| 1244 |
} |
| 1245 |
|
| 1246 |
function extract_used_css($css, $selectors) |
| 1247 |
{ |
| 1248 |
// Remove comments |
| 1249 |
$css = preg_replace('/\/\*[\s\S]*?\*\//', '', $css); |
| 1250 |
|
| 1251 |
// Remove @keyframes blocks |
| 1252 |
// $css = preg_replace('/@[-\w]*keyframes[^{]+\{(?:[^{}]*\{[^}]*\})*[^}]*\}/i', '', $css); |
| 1253 |
// $css = preg_replace('/@(?:-webkit-|-moz-|-o-|-ms-)?keyframes\s+[^{]+\{(?:[^{}]+|\{[^}]*\})*\}/is', '', $css); |
| 1254 |
|
| 1255 |
// Remove @font-face blocks |
| 1256 |
$css = preg_replace('/@font-face\s*\{(?:[^{}]+|\{[^}]*\})*\}/is', '', $css); |
| 1257 |
|
| 1258 |
// Remove @media blocks |
| 1259 |
// $css = preg_replace('/@media[^{]+\{(?:[^{}]+|\{[^}]*\})*\}/is', '', $css); |
| 1260 |
|
| 1261 |
// Remove @charset |
| 1262 |
$css = preg_replace('/@charset\s+["\'][^"\']+["\']\s*;/i', '', $css); |
| 1263 |
|
| 1264 |
// Remove @import |
| 1265 |
// $css = preg_replace('/@import\s+[^;]+;/i', '', $css); |
| 1266 |
$css = preg_replace( |
| 1267 |
'/@import\s+(?:url\s*\(\s*["\']?[^)]+["\']?\s*\)|["\'][^"\']+["\'])\s*[^;]*;?/i', |
| 1268 |
'', |
| 1269 |
$css |
| 1270 |
); |
| 1271 |
|
| 1272 |
|
| 1273 |
$css = preg_replace('/[\'"]\s*}\s*[\'"]/', 'bwpclosingcurlybracket', $css); |
| 1274 |
$css = preg_replace('/[\'"]\s*{\s*[\'"]/', 'bwpopeningcurlybracket', $css); |
| 1275 |
|
| 1276 |
// Match CSS blocks - ensure we skip any remaining @ symbols |
| 1277 |
// Use PREG_SET_ORDER | PREG_OFFSET_CAPTURE to get byte positions for precise removal |
| 1278 |
preg_match_all('/([^{}]+)\{([^{}]+)\}/', $css, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE); |
| 1279 |
// preg_match_all('/([^{@}]+)\{((?:[^{}"\']*|"[^"]*"|\'[^\']*\')*)\}/', $css, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE); |
| 1280 |
|
| 1281 |
$removals = []; |
| 1282 |
|
| 1283 |
foreach ($matches as $match) { |
| 1284 |
$block = trim($match[0][0]); |
| 1285 |
|
| 1286 |
// Skip at-rules |
| 1287 |
if (!empty($block) && !preg_match('/^@/', $block)) { |
| 1288 |
$block_selectors = trim(explode('{', $block)[0]); |
| 1289 |
$individual_selectors = $this->split_selector_by_comma($block_selectors); |
| 1290 |
$keep_block = false; |
| 1291 |
$used_selectors = []; |
| 1292 |
|
| 1293 |
foreach ($individual_selectors as $sel) { |
| 1294 |
$sel = trim($sel); |
| 1295 |
|
| 1296 |
if (self::is_selector_used($sel, $selectors, $this->js_classes)) { |
| 1297 |
$used_selectors[] = $sel; |
| 1298 |
$keep_block = true; |
| 1299 |
} |
| 1300 |
|
| 1301 |
// if (self::is_selector_used($sel, $selectors, $this->js_classes)) { |
| 1302 |
|
| 1303 |
// $keep_block = true; |
| 1304 |
// break; |
| 1305 |
// } |
| 1306 |
|
| 1307 |
} |
| 1308 |
|
| 1309 |
if ($keep_block) { |
| 1310 |
$new_selector_str = implode(', ', $used_selectors); |
| 1311 |
$block_pos = strpos($css, $block); |
| 1312 |
$sels_pos = $block_pos + strpos($block, $block_selectors); |
| 1313 |
$new_block = str_replace($block_selectors, $new_selector_str, $block); |
| 1314 |
|
| 1315 |
$removals[] = [ |
| 1316 |
'offset' => $match[0][1], |
| 1317 |
'length' => strlen($match[0][0]), |
| 1318 |
'replace' => $new_block, |
| 1319 |
]; |
| 1320 |
} |
| 1321 |
|
| 1322 |
if (!$keep_block) { |
| 1323 |
$removals[] = [ |
| 1324 |
'offset' => $match[0][1], |
| 1325 |
'length' => strlen($match[0][0]), |
| 1326 |
]; |
| 1327 |
} |
| 1328 |
} |
| 1329 |
} |
| 1330 |
|
| 1331 |
// Remove blocks in reverse order to preserve earlier offsets |
| 1332 |
for ($i = count($removals) - 1; $i >= 0; $i--) { |
| 1333 |
$r = $removals[$i]; |
| 1334 |
// var_dump(substr($css, $r['offset'], $r['length'])); |
| 1335 |
$css = substr_replace($css, $r['replace'] ?? "", $r['offset'], $r['length']); |
| 1336 |
} |
| 1337 |
|
| 1338 |
// Final cleanup: remove any stray @ symbols before class/ID/attribute selectors |
| 1339 |
// These are fragments left from block removals |
| 1340 |
$css = preg_replace('/@+(?=[.#\[])/i', '', $css); |
| 1341 |
|
| 1342 |
$css = str_replace('bwpclosingcurlybracket', '"}"', $css); |
| 1343 |
$css = str_replace('bwpopeningcurlybracket', '"{"', $css); |
| 1344 |
|
| 1345 |
return $css; |
| 1346 |
} |
| 1347 |
|
| 1348 |
function minify_css($css) |
| 1349 |
{ |
| 1350 |
// Remove comments |
| 1351 |
// $css = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $css); |
| 1352 |
|
| 1353 |
// // Remove whitespace around selectors, braces, colons, semicolons |
| 1354 |
// $css = preg_replace('/\s*([{}:;,>+~])\s*/', '$1', $css); |
| 1355 |
|
| 1356 |
// Remove remaining newlines and tabs |
| 1357 |
$css = str_replace(["\r\n", "\r", "\n", "\t"], '', $css); |
| 1358 |
|
| 1359 |
// Collapse multiple spaces into one |
| 1360 |
$css = preg_replace('/\s+/', ' ', $css); |
| 1361 |
$css = preg_replace('/\n+/', '\n', $css); |
| 1362 |
|
| 1363 |
// Remove spaces around parentheses |
| 1364 |
// $css = preg_replace('/\s*\(\s*/', '(', $css); |
| 1365 |
// $css = preg_replace('/\s*\)\s*/', ')', $css); |
| 1366 |
|
| 1367 |
// // Remove last semicolon before closing brace |
| 1368 |
// $css = str_replace(';}', '}', $css); |
| 1369 |
|
| 1370 |
// Remove leading/trailing whitespace |
| 1371 |
return trim($css); |
| 1372 |
} |
| 1373 |
|
| 1374 |
private function split_selector_by_comma($selector) |
| 1375 |
{ |
| 1376 |
$parts = []; |
| 1377 |
$current = ''; |
| 1378 |
$depth = 0; |
| 1379 |
$len = strlen($selector); |
| 1380 |
|
| 1381 |
for ($i = 0; $i < $len; $i++) { |
| 1382 |
$char = $selector[$i]; |
| 1383 |
|
| 1384 |
if ($char === '(') { |
| 1385 |
$depth++; |
| 1386 |
$current .= $char; |
| 1387 |
} elseif ($char === ')') { |
| 1388 |
$depth--; |
| 1389 |
$current .= $char; |
| 1390 |
} elseif ($char === '[') { |
| 1391 |
$depth++; |
| 1392 |
$current .= $char; |
| 1393 |
} elseif ($char === ']') { |
| 1394 |
$depth--; |
| 1395 |
$current .= $char; |
| 1396 |
} elseif ($char === ',' && $depth === 0) { |
| 1397 |
// Only split on commas outside parentheses |
| 1398 |
if (trim($current) !== '') { |
| 1399 |
$parts[] = trim($current); |
| 1400 |
} |
| 1401 |
$current = ''; |
| 1402 |
} else { |
| 1403 |
$current .= $char; |
| 1404 |
} |
| 1405 |
} |
| 1406 |
|
| 1407 |
// Add last part |
| 1408 |
if (trim($current) !== '') { |
| 1409 |
$parts[] = trim($current); |
| 1410 |
} |
| 1411 |
|
| 1412 |
return $parts; |
| 1413 |
} |
| 1414 |
|
| 1415 |
} |
