# quickwebp/3.2.0/public/class-display-webp.php QuickWebP – WebP & AVIF Image Optimizer, Compression & SEO for WordPress, version 3.2.0. 521 lines. - Page: https://pluginprobe.com/plugins/quickwebp/3.2.0/code/public/class-display-webp.php - Raw: https://pluginprobe.com/plugins/quickwebp/3.2.0/raw/public/class-display-webp.php - Modified: 2023-07-26T09:50:50+00:00 Line numbers below start at 1. Link to a line or a range by appending a fragment to the page URL, for example `https://pluginprobe.com/plugins/quickwebp/3.2.0/code/public/class-display-webp.php#L10-L20`. ```php plugin_name = $plugin_name; $this->version = $version; } /** * Start buffering the page content */ public function start_content_process() { $display_webp = get_option( 'quickwebp_settings_conversion_display_webp_mode', quickwebp_settings_default('quickwebp_settings_conversion_display_webp_mode') ); if ( $display_webp != 'picture' ){ return; } ob_start( array( $this, 'maybe_process_buffer' ) ); } /** * Maybe process the page content */ public function maybe_process_buffer( $buffer ) { if ( ! $this->is_html( $buffer ) ) { return $buffer; } if ( strlen( $buffer ) <= 255 ) { // Buffer length must be > 255 (IE does not read pages under 255 c). return $buffer; } $buffer = $this->process_content( $buffer ); return $buffer; } /** * Process the content */ public function process_content( $content ) { $html_no_picture_tags = $this->remove_picture_tags( $content ); $images = $this->get_images( $html_no_picture_tags ); if ( ! $images ) { return $content; } foreach ( $images as $image ) { $tag = $this->build_picture_tag( $image ); $content = str_replace( $image['tag'], $tag, $content ); } return $content; } /** * Remove pre-existing tags. */ private function remove_picture_tags( $html ) { $replace = preg_replace( '#]*>.*?<\/picture\s*>#mis', '', $html ); if ( null !== $replace ) { return $html; } return $replace; } /** * Get a list of images in a content. */ protected function get_images( $content ) { // Remove comments. $content = preg_replace( '//Uis', '', $content ); if ( ! preg_match_all( '//isU', $content, $matches ) ) { return []; } $images = array_map( array( $this, 'process_image' ), $matches[0] ); $images = array_filter( $images ); if ( ! $images || ! is_array( $images ) ) { return []; } foreach ( $images as $i => $image ) { if ( empty( $image['src']['webp_exists'] ) || empty( $image['src']['webp_url'] ) ) { unset( $images[ $i ] ); continue; } unset( $images[ $i ]['src']['webp_path'], $images[ $i ]['src']['webp_exists'] ); if ( empty( $image['srcset'] ) || ! is_array( $image['srcset'] ) ) { unset( $images[ $i ]['srcset'] ); continue; } foreach ( $image['srcset'] as $j => $srcset ) { if ( ! is_array( $srcset ) ) { continue; } if ( empty( $srcset['webp_exists'] ) || empty( $srcset['webp_url'] ) ) { unset( $images[ $i ]['srcset'][ $j ]['webp_url'] ); } unset( $images[ $i ]['srcset'][ $j ]['webp_path'], $images[ $i ]['srcset'][ $j ]['webp_exists'] ); } } return $images; } /** * Tell if a content is HTML */ protected function is_html( $content ) { return preg_match( '/<\/html>/i', $content ); } /** * Process an image tag and get an array containing some data. */ protected function process_image( $image ) { $atts_pattern = '/(?[^\s"\']+)\s*=\s*(["\'])\s*(?.*?)\s*\2/s'; if ( ! preg_match_all( $atts_pattern, $image, $tmp_attributes, PREG_SET_ORDER ) ) { // No attributes? return false; } $attributes = []; foreach ( $tmp_attributes as $attribute ) { $attributes[ $attribute['name'] ] = $attribute['value']; } if ( ! empty( $attributes['class'] ) && strpos( $attributes['class'], 'quickwebp-no-webp' ) !== false ) { // Has the 'quickwebp-no-webp' class. return false; } // Deal with the src attribute. $src_source = false; foreach ( [ 'data-lazy-src', 'data-src', 'src' ] as $src_attr ) { if ( ! empty( $attributes[ $src_attr ] ) ) { $src_source = $src_attr; break; } } if ( ! $src_source ) { // No src attribute. return false; } $extensions = 'jpg|jpeg|jpe|png'; if ( ! preg_match( '@^(?(?:(?:https?:)?//|/).+\.(?' . $extensions . '))(?\?.*)?$@i', $attributes[ $src_source ], $src ) ) { // Not a supported image format. return false; } $webp_url = $src['src'] . '.webp'; $webp_path = $this->url_to_path( $webp_url ); $webp_url .= ! empty( $src['query'] ) ? $src['query'] : ''; $data = [ 'tag' => $image, 'attributes' => $attributes, 'src_attribute' => $src_source, 'src' => [ 'url' => $attributes[ $src_source ], 'webp_url' => $webp_url, 'webp_path' => $webp_path, 'webp_exists' => $webp_path && @file_exists( $webp_path ) ], 'srcset_attribute' => false, 'srcset' => [] ]; // Deal with the srcset attribute. $srcset_source = false; foreach ( [ 'data-lazy-srcset', 'data-srcset', 'srcset' ] as $srcset_attr ) { if ( ! empty( $attributes[ $srcset_attr ] ) ) { $srcset_source = $srcset_attr; break; } } if ( $srcset_source ) { $data['srcset_attribute'] = $srcset_source; $srcset = explode( ',', $attributes[ $srcset_source ] ); foreach ( $srcset as $srcs ) { $srcs = preg_split( '/\s+/', trim( $srcs ) ); if ( count( $srcs ) > 2 ) { // Not a good idea to have space characters in file name. $descriptor = array_pop( $srcs ); $srcs = [ implode( ' ', $srcs ), $descriptor ]; } if ( empty( $srcs[1] ) ) { $srcs[1] = '1x'; } if ( ! preg_match( '@^(?(?:https?:)?//.+\.(?' . $extensions . '))(?\?.*)?$@i', $srcs[0], $src ) ) { // Not a supported image format. $data['srcset'][] = [ 'url' => $srcs[0], 'descriptor' => $srcs[1], ]; continue; } $webp_url = $src['src'] . '.webp'; $webp_path = $this->url_to_path( $webp_url ); $webp_url .= ! empty( $src['query'] ) ? $src['query'] : ''; $data['srcset'][] = [ 'url' => $srcs[0], 'descriptor' => $srcs[1], 'webp_url' => $webp_url, 'webp_path' => $webp_path, 'webp_exists' => $webp_path && @file_exists( $webp_path ) ]; } } if ( ! $data || ! is_array( $data ) ) { return false; } if ( ! isset( $data['tag'], $data['attributes'], $data['src_attribute'], $data['src'], $data['srcset_attribute'], $data['srcset'] ) ) { return false; } return $data; } /** * Convert a file URL to an absolute path. */ protected function url_to_path( $url ) { static $uploads_url; static $uploads_dir; static $root_url; static $root_dir; static $domain_url; if ( ! isset( $uploads_url ) ) { $uploads = wp_upload_dir(); $uploads_url = false; $uploads_dir = false; if ( false === $uploads['error'] ) { $uploads_url = set_url_scheme( trailingslashit( $uploads['baseurl'] ) ); $uploads_dir = wp_normalize_path( trailingslashit( $uploads['basedir'] ) ); } $current_network = false; if ( function_exists( 'get_network' ) ) { $current_network = get_network(); } elseif ( function_exists( 'get_current_site' ) ) { $current_network = get_current_site(); } if ( ! is_multisite() || is_main_site() || ! $current_network ) { $root_url = home_url( '/' ); } else { $root_url = is_ssl() ? 'https' : 'http'; $root_url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $root_url ); $root_url = set_url_scheme( trailingslashit( $root_url ) ); } $home = set_url_scheme( untrailingslashit( get_option( 'home' ) ), 'http' ); $siteurl = set_url_scheme( untrailingslashit( get_option( 'siteurl' ) ), 'http' ); if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) { $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */ $pos = strripos( str_replace( '\\', '/', ABSPATH ), trailingslashit( $wp_path_rel_to_home ) ); $root_path = substr( ABSPATH, 0, $pos ); $root_dir = trailingslashit( wp_normalize_path( $root_path ) ); } elseif ( ! defined( 'PATH_CURRENT_SITE' ) || ! is_multisite() || is_main_site()) { $root_dir = trailingslashit( wp_normalize_path( ABSPATH ) ); } else { $document_root = realpath( wp_unslash( $_SERVER['DOCUMENT_ROOT'] ) ); $document_root = trailingslashit( str_replace( '\\', '/', $document_root ) ); $path_current_site = trim( str_replace( '\\', '/', PATH_CURRENT_SITE ), '/' ); $root_dir = trailingslashit( wp_normalize_path( $document_root . $path_current_site ) ); } $domain_url = wp_parse_url( $root_url ); if ( ! empty( $domain_url['scheme'] ) && ! empty( $domain_url['host'] ) ) { $domain_url = $domain_url['scheme'] . '://' . $domain_url['host'] . '/'; } else { $domain_url = false; } } // Get the right URL format. if ( $domain_url && strpos( $url, '/' ) === 0 ) { // URL like `/path/to/image.jpg.webp`. $url = $domain_url . ltrim( $url, '/' ); } $url = set_url_scheme( $url ); // Return the path. if ( stripos( $url, $uploads_url ) === 0 ) { return str_ireplace( $uploads_url, $uploads_dir, $url ); } if ( stripos( $url, $root_url ) === 0 ) { return str_ireplace( $root_url, $root_dir, $url ); } return false; } /** * Build a tag to insert. */ protected function build_picture_tag( $image ) { $to_remove = [ 'alt' => '', 'height' => '', 'width' => '', 'data-lazy-src' => '', 'data-src' => '', 'src' => '', 'data-lazy-srcset' => '', 'data-srcset' => '', 'srcset' => '', 'data-lazy-sizes' => '', 'data-sizes' => '', 'sizes' => '', ]; $attributes = array_diff_key( $image['attributes'], $to_remove ); /** * Remove Gutenberg specific attributes from picture tag, leave them on img tag. * Optional: $attributes['class'] = 'imagify-webp-cover-wrapper'; for website admin styling ease. */ if ( ! empty( $image['attributes']['class'] ) && strpos( $image['attributes']['class'], 'wp-block-cover__image-background' ) !== false ) { unset( $attributes['style'] ); unset( $attributes['class'] ); unset( $attributes['data-object-fit'] ); unset( $attributes['data-object-position'] ); } $output = 'build_attributes( $attributes ) . ">\n"; $output .= $this->build_source_tag( $image ); $output .= $this->build_img_tag( $image ); $output .= "\n"; return $output; } /** * Create HTML attributes from an array. */ protected function build_attributes( $attributes ) { if ( ! $attributes || ! is_array( $attributes ) ) { return ''; } $out = ''; foreach ( $attributes as $attribute => $value ) { $out .= ' ' . $attribute . '="' . esc_attr( $value ) . '"'; } return $out; } /** * Build the tag to insert in the . */ protected function build_source_tag( $image ) { $srcset_source = ! empty( $image['srcset_attribute'] ) ? $image['srcset_attribute'] : $image['src_attribute'] . 'set'; $attributes = [ 'type' => 'image/webp', $srcset_source => [], ]; if ( ! empty( $image['srcset'] ) ) { foreach ( $image['srcset'] as $srcset ) { if ( empty( $srcset['webp_url'] ) ) { continue; } $attributes[ $srcset_source ][] = $srcset['webp_url'] . ' ' . $srcset['descriptor']; } } if ( empty( $attributes[ $srcset_source ] ) ) { $attributes[ $srcset_source ][] = $image['src']['webp_url']; } $attributes[ $srcset_source ] = implode( ', ', $attributes[ $srcset_source ] ); foreach ( [ 'data-lazy-srcset', 'data-srcset', 'srcset' ] as $srcset_attr ) { if ( ! empty( $image['attributes'][ $srcset_attr ] ) && $srcset_attr !== $srcset_source ) { $attributes[ $srcset_attr ] = $image['attributes'][ $srcset_attr ]; } } if ( 'srcset' !== $srcset_source && empty( $attributes['srcset'] ) && ! empty( $image['attributes']['src'] ) ) { // Lazyload: the "src" attr should contain a placeholder (a data image or a blank.gif ). $attributes['srcset'] = $image['attributes']['src']; } foreach ( [ 'data-lazy-sizes', 'data-sizes', 'sizes' ] as $sizes_attr ) { if ( ! empty( $image['attributes'][ $sizes_attr ] ) ) { $attributes[ $sizes_attr ] = $image['attributes'][ $sizes_attr ]; } } return 'build_attributes( $attributes ) . "/>\n"; } /** * Build the tag to insert in the . */ protected function build_img_tag( $image ) { /** * Gutenberg fix. * Check for the 'wp-block-cover__image-background' class on the original image, and leave that class and style attributes if found. */ if ( ! empty( $image['attributes']['class'] ) && strpos( $image['attributes']['class'], 'wp-block-cover__image-background' ) !== false ) { $to_remove = [ 'id' => '', 'title' => '', ]; $attributes = array_diff_key( $image['attributes'], $to_remove ); } else { $to_remove = [ 'class' => '', 'id' => '', 'style' => '', 'title' => '', ]; $attributes = array_diff_key( $image['attributes'], $to_remove ); } return 'build_attributes( $attributes ) . "/>\n"; } } ```