'level' ] */ private $link_file_names = array(); /** * Extract level determines how many directories will be included in the filename. */ private $extract_level = -3; public $breeze_minified_css_hashes; // Reads the page and collects style tags public function read( $options ) { $this->breeze_minified_css_hashes = $options['breeze_minified_css_hashes']; $this->include_imported_css = filter_var( $options['include_imported_css'], FILTER_VALIDATE_BOOLEAN ); $this_path_url = $this->get_cache_file_url( 'css' ); if ( false === breeze_is_process_locked( $this_path_url ) ) { $this->do_process = breeze_lock_cache_process( $this_path_url ); } else { $this->original_content = $this->content; return true; } $noptimizeCSS = apply_filters( 'breeze_filter_css_noptimize', false, $this->content ); if ( $noptimizeCSS ) { return false; } $whitelistCSS = apply_filters( 'breeze_filter_css_whitelist', '' ); if ( ! empty( $whitelistCSS ) ) { $this->whitelist = array_filter( array_map( 'trim', explode( ',', $whitelistCSS ) ) ); } if ( ! is_array( $this->whitelist ) ) { $this->whitelist = array(); } if ( $options['nogooglefont'] == true ) { $removableCSS = 'fonts.googleapis.com'; } else { $removableCSS = ''; } $removableCSS = apply_filters( 'breeze_filter_css_removables', $removableCSS ); if ( ! empty( $removableCSS ) ) { $this->cssremovables = array_filter( array_map( 'trim', explode( ',', $removableCSS ) ) ); } $this->cssinlinesize = apply_filters( 'breeze_filter_css_inlinesize', 256 ); // filter to "late inject minified CSS", default to true for now (it is faster) $this->inject_min_late = apply_filters( 'breeze_filter_css_inject_min_late', true ); // Remove everything that's not the header if ( apply_filters( 'breeze_filter_css_justhead', $options['justhead'] ) == true ) { $content = explode( '', $this->content, 2 ); $this->content = $content[0] . ''; $this->restofcontent = $content[1]; } // include inline? if ( apply_filters( 'breeze_css_include_inline', $options['include_inline'] ) == true ) { $this->include_inline = true; } // group css? if ( apply_filters( 'breeze_css_include_inline', $options['groupcss'] ) == true ) { $this->group_css = true; } // group css? if ( apply_filters( 'breeze_css_font_swap', $options['font_swap'] ) == true ) { $this->font_swap = true; } // custom js exclude if ( ! empty( $options['custom_css_exclude'] ) ) { $this->custom_css_exclude = array_merge( $this->custom_css_exclude, $options['custom_css_exclude'] ); } // what CSS shouldn't be autoptimized $excludeCSS = $options['css_exclude']; $excludeCSS = apply_filters( 'breeze_filter_css_exclude', $excludeCSS ); if ( $excludeCSS !== '' ) { $this->dontmove = array_filter( array_map( 'trim', explode( ',', $excludeCSS ) ) ); } else { $this->dontmove = array(); } // should we defer css? // value: true/ false $this->defer = $options['defer']; $this->defer = apply_filters( 'breeze_filter_css_defer', $this->defer ); // should we inline while deferring? // value: inlined CSS $this->defer_inline = $options['defer_inline']; // should we inline? // value: true/ false $this->inline = $options['inline']; $this->inline = apply_filters( 'breeze_filter_css_inline', $this->inline ); // get cdn url $this->cdn_url = $options['cdn_url']; // Store data: URIs setting for later use $this->datauris = $options['datauris']; // noptimize me $this->content = $this->hide_noptimize( $this->content ); // exclude (no)script, as those may contain CSS which should be left as is if ( strpos( $this->content, 'content = preg_replace_callback( '#<(?:no)?script.*?<\/(?:no)?script>#is', function ( $matches ) { return '%%SCRIPT' . breeze_HASH . '%%' . base64_encode( $matches[0] ) . '%%SCRIPT%%'; }, $this->content ); } // Save IE hacks $this->content = $this->hide_iehacks( $this->content ); // hide comments $this->content = $this->hide_comments( $this->content ); // Get )|(]*stylesheet[^>]*>)#Usmi', $this->content, $matches ) ) { foreach ( $matches[0] as $tag ) { if ( $this->isremovable( $tag, $this->cssremovables ) ) { $this->content = str_replace( $tag, '', $this->content ); } elseif ( $this->ismovable( $tag ) ) { // Get the media if ( strpos( $tag, 'media=' ) !== false ) { preg_match( '#media=(?:"|\')([^>]*)(?:"|\')#Ui', $tag, $medias ); $medias = explode( ',', $medias[1] ); $media = array(); foreach ( $medias as $elem ) { if ( empty( $elem ) ) { $elem = 'all'; } $media[] = $elem; } } else { // No media specified - applies to all $media = array( 'all' ); } $media = apply_filters( 'breeze_filter_css_tagmedia', $media, $tag ); if ( preg_match( '# $url = current( explode( '?', $source[2], 2 ) ); // Let's check if this file is in the excluded list. $is_excluded = breeze_is_string_in_array_values( $url, $this->custom_css_exclude ); // exclude css file if ( ! empty( $is_excluded ) ) { continue; } // Treat special exceptions that might break front-end for admin/editor/author/contributor. $is_an_exception = $this->breeze_css_files_exceptions( $url ); if ( true === $is_an_exception ) { continue; } $path = $this->getpath( $url ); if ( $path !== false && preg_match( '#\.css$#', $path ) ) { // Good link $this->css[] = array( $media, $path ); } else { // Link is dynamic (.php etc) $tag = ''; } } else { // inline css in style tags can be wrapped in comment tags, so restore comments $tag = $this->restore_comments( $tag ); preg_match( '#(.*)#Usmi', $tag, $code ); // and re-hide them to be able to to the removal based on tag $tag = $this->hide_comments( $tag ); if ( $this->include_inline ) { $code = preg_replace( '#^.*.*$#sm', '$1', $code[1] ); if( !is_array($code) && false !== strpos( $code, ':is' )){ $tag = ''; continue; } $code = $this->breeze_sanitize_css_content($code); if ( true == $this->group_css ) { // Not the problem if ( isset( $media[0] ) && 'print' === trim( $media[0] ) ) { if ( false === strpos( $code, '@media' ) ) { $code = '@media print{' . $code . '}'; } } elseif ( isset( $media[0] ) && 'speech' === trim( $media[0] ) ) { if ( false === strpos( $code, '@media' ) ) { $code = '@media speech{' . $code . '}'; } } elseif ( isset( $media[0] ) && 'screen' === trim( $media[0] ) ) { if ( false === strpos( $code, '@media' ) ) { $code = '@media screen{' . $code . '}'; } } } $is_elementor_exception = false; if ( defined( 'ELEMENTOR_VERSION' ) || defined( 'ELEMENTOR_PRO_VERSION' ) ) { $is_elementor_exception = true; } if ( false === $is_elementor_exception ) { $this->css[] = array( $media, 'INLINE;' . $code ); } elseif ( false === strpos( $code, '.elementor-' ) ) { $this->css[] = array( $media, 'INLINE;' . $code ); } else { $tag = ''; } } else { $tag = ''; } } // Remove the original style tag $this->content = str_replace( $tag, '', $this->content ); } } return true; } // Really, no styles? return false; } /** * Generates file name that will be stored in breeze minification directory. */ private function breeze_get_minified_file_name( $path, $extract_level ) { $parts = array_filter( explode( '/', $path ) ); $file_name = array_slice( $parts, $extract_level ); $file_name = implode( '-', $file_name ); $file_name = str_replace( '.css', '', $file_name ); if ( isset( $this->link_file_names[ $file_name ] ) ) { $extract_level = $this->link_file_names[ $file_name ]; --$extract_level; return $this->breeze_get_minified_file_name( $path, $extract_level ); } $this->link_file_names[ $file_name ] = $extract_level; return $file_name; } // Joins and optimizes CSS public function minify() { if ( false === $this->do_process ) { return true; } foreach ( $this->css as $group ) { list( $media, $css ) = $group; if ( preg_match( '#^INLINE;#', $css ) ) { // ', $replaceTag ); } } else { if ( $this->defer == true ) { $deferredCssBlock = ""; $noScriptCssBlock .= ''; $this->inject_in_html( $noScriptCssBlock, $replaceTag ); $this->inject_in_html( $deferredCssBlock, array( '', 'before' ) ); } } } elseif ( $this->inline == true ) { foreach ( $this->csscode as $media => $code ) { $this->inject_in_html( '', $replaceTag ); } } else { if ( $this->defer == true ) { $deferredCssBlock = ""; $noScriptCssBlock .= ''; $this->inject_in_html( $noScriptCssBlock, $replaceTag ); $this->inject_in_html( $deferredCssBlock, array( '', 'before' ) ); } } if ( true === $this->do_process ) { $this_path_url = $this->get_cache_file_url( 'css' ); breeze_unlock_process( $this_path_url ); return $this->content; } else { return $this->original_content; } // Return the modified stylesheet // return $this->content; } static function fixurls( $file, $code ) { $file = str_replace( BREEZE_ROOT_DIR, '/', $file ); $dir = dirname( $file ); // Like /wp-content // quick fix for import-troubles in e.g. arras theme $code = preg_replace( '#@import ("|\')(.+?)\.css("|\')#', '@import url("${2}.css")', $code ); if ( preg_match_all( '#url\((?!data)(?!\#)(?!"\#)(.*)\)#Usi', $code, $matches ) ) { $replace = array(); foreach ( $matches[1] as $k => $url ) { // Remove quotes $url = trim( $url, " \t\n\r\0\x0B\"'" ); $noQurl = trim( $url, "\"'" ); if ( $url !== $noQurl ) { $removedQuotes = true; } else { $removedQuotes = false; } $url = $noQurl; if ( substr( $url, 0, 1 ) == '/' || preg_match( '#^(https?://|ftp://|data:)#i', $url ) ) { // URL is absolute continue; } else { // relative URL $newurl = preg_replace( '/https?:/', '', str_replace( ' ', '%20', breeze_WP_ROOT_URL . str_replace( '//', '/', $dir . '/' . $url ) ) ); $hash = hash( 'sha512', $url ); $code = str_replace( $matches[0][ $k ], $hash, $code ); if ( ! empty( $removedQuotes ) ) { $replace[ $hash ] = 'url(\'' . $newurl . '\')'; } else { $replace[ $hash ] = 'url(' . $newurl . ')'; } } } // Do the replacing here to avoid breaking URLs $code = str_replace( array_keys( $replace ), array_values( $replace ), $code ); } return $code; } private function ismovable( $tag ) { if ( ! empty( $this->whitelist ) ) { foreach ( $this->whitelist as $match ) { if ( strpos( $tag, $match ) !== false ) { return true; } } // no match with whitelist return false; } else { if ( is_array( $this->dontmove ) && ! empty( $this->dontmove ) ) { foreach ( $this->dontmove as $match ) { if ( strpos( $tag, $match ) !== false ) { // Matched something return false; } } } // If we're here it's safe to move return true; } } private function can_inject_late( $cssPath, $css ) { if ( ( strpos( $cssPath, 'min.css' ) === false ) || ( $this->inject_min_late !== true ) ) { // late-inject turned off or file not minified based on filename return false; } elseif ( strpos( $css, '@import' ) !== false ) { // can't late-inject files with imports as those need to be aggregated return false; } elseif ( ( strpos( $css, '@font-face' ) !== false ) && ( apply_filters( 'breeze_filter_css_fonts_cdn', false ) === true ) && ( ! empty( $this->cdn_url ) ) ) { // don't late-inject CSS with font-src's if fonts are set to be CDN'ed return false; } elseif ( ( ( $this->datauris == true ) || ( ! empty( $this->cdn_url ) ) ) && preg_match( '#background[^;}]*url\(#Ui', $css ) ) { // don't late-inject CSS with images if CDN is set OR is image inlining is on return false; } else { // phew, all is safe, we can late-inject return true; } } /** * Search for specific exceptions. * Files that should not be included in grouping. * * @param $needle * * @return bool * @since 1.1.3 */ private function breeze_css_files_exceptions( $needle ) { $search_patterns = array( 'huebert\.[a-zA-Z0-9]*\.css', 'app\.[a-zA-Z0-9]*\.css', ); $needle = trim( $needle ); foreach ( $search_patterns as $pattern ) { preg_match( '/(' . $pattern . ')/i', $needle, $output_array ); if ( ! empty( $output_array ) ) { // is found ? return true; } } return false; } /** * Append font-display: wap parameter to font-face definitions. * * @param string $code * * @return mixed|string|string[] * @since 1.2.0 * @access private */ private function append_font_swap( $code = '' ) { if ( false === $this->font_swap ) { return $code; } if ( ! empty( $code ) ) { preg_match_all( '/[\s+]?\@font-face[\s+]?(\{[a-zA-Z\s\:\;\0-9\,\?\=]+\})/mi', $code, $matches ); if ( isset( $matches ) && ! empty( $matches ) && isset( $matches[0] ) && ! empty( $matches[0] ) ) { foreach ( $matches[0] as $index => $css_font_face ) { if ( ! substr_count( $css_font_face, 'font-display' ) ) { $font_display = str_replace( '{', '{font-display:swap;', $css_font_face ); $code = str_replace( $css_font_face, $font_display, $code ); } } } } return $code; } /** * Sanitize CSS content before minification * Fixes common syntax errors that break the CSS minify. * * @param string $css_content Raw CSS content * * @return string Sanitized CSS content */ private function breeze_sanitize_css_content( string $css_content ): string { // Remove stray backticks at start of selectors. $css_content = preg_replace('/^`([^{]+\{)/m', '$1', $css_content); // Remove extra white spaces. $css_content = preg_replace('/\s+/', ' ', $css_content); // Fix double semicolons. $css_content = preg_replace('/;;+/', ';', $css_content); // Remove trailing semicolons before closing braces. $css_content = preg_replace('/;\s*}/', '}', $css_content); return $css_content; } }