| Current File : /home/escuelai/public_html/wp-content/plugins/w3-total-cache/Minify_Plugin.php |
<?php
/**
* File: Minify_Plugin.php
*
* @package W3TC
*/
namespace W3TC;
/**
* Class Minify_Plugin
*
* phpcs:disable PSR2.Classes.PropertyDeclaration.Underscore
* phpcs:disable PSR2.Methods.MethodDeclaration.Underscore
* phpcs:disable Generic.CodeAnalysis.UnusedFunctionParameter
*/
class Minify_Plugin {
/**
* Minify reject reason
*
* @var string
*/
public $minify_reject_reason = '';
/**
* Error
*
* @var string
*/
public $error = '';
/**
* Array of replaced styles
*
* @var array
*/
public $replaced_styles = array();
/**
* Array of replaced scripts
*
* @var array
*/
public $replaced_scripts = array();
/**
* Array of printed scripts.
*
* @var array
*/
public $printed_scripts = array();
/**
* Array of printed styles.
*
* @var array
*/
public $printed_styles = array();
/**
* Helper object to use
*
* @var _W3_MinifyHelpers
*/
private $minify_helpers;
/**
* Config.
*
* @var Config Configuration.
*/
private $_config = null;
/**
* Constructor for the Minify_Plugin class.
*
* @return void
*/
public function __construct() {
$this->_config = Dispatcher::config();
}
/**
* Initializes the plugin by registering filters and actions.
*
* @return void
*/
public function run() {
add_action( 'init', array( $this, 'init' ) );
add_filter( 'cron_schedules', array( $this, 'cron_schedules' ) ); // phpcs:ignore WordPress.WP.CronInterval.ChangeDetected
add_action( 'w3tc_minifycache_purge_wpcron', array( $this, 'w3tc_minifycache_purge_wpcron' ) );
add_filter( 'w3tc_admin_bar_menu', array( $this, 'w3tc_admin_bar_menu' ) );
add_filter( 'w3tc_footer_comment', array( $this, 'w3tc_footer_comment' ) );
if ( 'file' === $this->_config->get_string( 'minify.engine' ) ) {
add_action( 'w3_minify_cleanup', array( $this, 'cleanup' ) );
}
add_filter( 'w3tc_pagecache_set_header', array( $this, 'w3tc_pagecache_set_header' ), 20, 2 );
// usage statistics handling.
add_action( 'w3tc_usage_statistics_of_request', array( $this, 'w3tc_usage_statistics_of_request' ), 10, 1 );
add_filter( 'w3tc_usage_statistics_metrics', array( $this, 'w3tc_usage_statistics_metrics' ) );
// Start minify.
if ( $this->can_minify() ) {
Util_Bus::add_ob_callback( 'minify', array( $this, 'ob_callback' ) );
}
}
/**
* Initializes the Minify Plugin during the `init` action.
*
* @return void
*/
public function init() {
$url = Util_Environment::filename_to_url( W3TC_CACHE_MINIFY_DIR );
$parsed = wp_parse_url( $url );
$prefix = '/' . trim( $parsed['path'], '/' ) . '/';
$request_uri = isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '';
if ( substr( $request_uri, 0, strlen( $prefix ) ) === $prefix ) {
$w3_minify = Dispatcher::component( 'Minify_MinifiedFileRequestHandler' );
$filename = Util_Environment::remove_query_all( substr( $request_uri, strlen( $prefix ) ) );
$w3_minify->process( $filename );
exit();
}
if ( ! empty( Util_Request::get_string( 'w3tc_minify' ) ) ) {
$w3_minify = Dispatcher::component( 'Minify_MinifiedFileRequestHandler' );
$w3_minify->process( Util_Request::get_string( 'w3tc_minify' ) );
exit();
}
}
/**
* Cleans up the minify cache.
*
* @return void
*/
public function cleanup() {
$a = Dispatcher::component( 'Minify_Plugin_Admin' );
$a->cleanup();
}
/**
* Adds custom schedules for cron jobs related to minify cache cleanup.
*
* @param array $schedules The existing cron schedules.
*
* @return array The updated cron schedules.
*/
public function cron_schedules( $schedules ) {
$c = $this->_config;
$minify_enabled = $c->get_boolean( 'minify.enabled' );
$engine = $c->get_string( 'minify.engine' );
if ( $minify_enabled && ( 'file' === $engine || 'file_generic' === $engine ) ) {
$interval = $c->get_integer( 'minify.file.gc' );
$schedules['w3_minify_cleanup'] = array(
'interval' => $interval,
'display' => sprintf(
// translators: 1 interval in seconds.
__( '[W3TC] Minify Cache file GC (every %d seconds)', 'w3-total-cache' ),
$interval
),
);
}
return $schedules;
}
/**
* Purges the minify cache via WP-Cron.
*
* @since 2.8.0
*
* @return void
*/
public function w3tc_minifycache_purge_wpcron() {
$flusher = Dispatcher::component( 'CacheFlush' );
$flusher->minifycache_flush();
}
/**
* Handles output buffering for minification and optimization.
*
* @param string $buffer The output buffer content.
*
* @return string The processed buffer after minification.
*
* @throws \Exception If an error occurs during the minification process.
*/
public function ob_callback( $buffer ) {
$enable = Util_Content::is_html( $buffer ) && $this->can_minify2( $buffer );
$enable = apply_filters( 'w3tc_minify_enable', $enable );
if ( ! $enable ) {
return $buffer;
}
$this->minify_helpers = new _W3_MinifyHelpers( $this->_config );
// Replace script and style tags.
$js_enable = $this->_config->get_boolean( 'minify.js.enable' );
$css_enable = $this->_config->get_boolean( 'minify.css.enable' );
$html_enable = $this->_config->get_boolean( 'minify.html.enable' );
if ( function_exists( 'is_feed' ) && is_feed() ) {
$js_enable = false;
$css_enable = false;
}
$js_enable = apply_filters( 'w3tc_minify_js_enable', $js_enable );
$css_enable = apply_filters( 'w3tc_minify_css_enable', $css_enable );
$html_enable = apply_filters( 'w3tc_minify_html_enable', $html_enable );
$head_prepend = '';
$body_prepend = '';
$body_append = '';
$embed_extsrcjs = false;
$buffer = apply_filters( 'w3tc_minify_before', $buffer );
// If the minify cache folder is missing minify fails. This will generate the minify folder path if missing.
$minify_environment = Dispatcher::component( 'Minify_Environment' );
try {
$minify_environment->fix_on_wpadmin_request( $this->_config, true );
} catch ( \Exception $e ) { // phpcs:ignore Generic.CodeAnalysis.EmptyStatement.DetectedCatch
// Exception.
}
if ( $this->_config->get_boolean( 'minify.auto' ) ) {
if ( $js_enable ) {
$minifier = new Minify_AutoJs( $this->_config, $buffer, $this->minify_helpers );
$buffer = $minifier->execute();
$this->replaced_scripts = $minifier->get_debug_minified_urls();
}
if ( $css_enable ) {
$minifier = new Minify_AutoCss( $this->_config, $buffer, $this->minify_helpers );
$buffer = $minifier->execute();
}
$buffer = apply_filters( 'w3tc_minify_processed', $buffer );
} else {
if ( $css_enable ) {
$style = $this->get_style_group( 'include' );
if ( $style['body'] ) {
if ( $this->_custom_location_does_not_exist( '/<!-- W3TC-include-css -->/', $buffer, $style['body'] ) ) {
$head_prepend .= $style['body'];
}
$this->remove_styles_group( $buffer, 'include' );
}
if ( $this->_config->getf_boolean( 'minify.css.http2push' ) ) {
$this->minify_helpers->http2_header_add( $style['url'], 'style' );
}
}
if ( $js_enable ) {
$embed_type = $this->_config->get_string( 'minify.js.header.embed_type' );
$http2push = $this->_config->getf_boolean( 'minify.js.http2push' );
$script = $this->get_script_group( 'include', $embed_type );
if ( $script['body'] ) {
$embed_extsrcjs = 'extsrc' === $embed_type || 'asyncsrc' === $embed_type ? true : $embed_extsrcjs;
if ( $this->_custom_location_does_not_exist( '/<!-- W3TC-include-js-head -->/', $buffer, $script['body'] ) ) {
$head_prepend .= $script['body'];
}
$this->remove_scripts_group( $buffer, 'include' );
}
if ( $http2push ) {
$this->minify_helpers->http2_header_add( $script['url'], 'script' );
}
$embed_type = $this->_config->get_string( 'minify.js.body.embed_type' );
$script = $this->get_script_group( 'include-body', $embed_type );
if ( $script['body'] ) {
$embed_extsrcjs = 'extsrc' === $embed_type || 'asyncsrc' === $embed_type ? true : $embed_extsrcjs;
if ( $this->_custom_location_does_not_exist( '/<!-- W3TC-include-js-body-start -->/', $buffer, $script['body'] ) ) {
$body_prepend .= $script['body'];
}
$this->remove_scripts_group( $buffer, 'include-body' );
}
if ( $http2push ) {
$this->minify_helpers->http2_header_add( $script['url'], 'script' );
}
$embed_type = $this->_config->get_string( 'minify.js.footer.embed_type' );
$script = $this->get_script_group( 'include-footer', $embed_type );
if ( $script['body'] ) {
$embed_extsrcjs = 'extsrc' === $embed_type || 'asyncsrc' === $embed_type ? true : $embed_extsrcjs;
if ( $this->_custom_location_does_not_exist( '/<!-- W3TC-include-js-body-end -->/', $buffer, $script['body'] ) ) {
$body_append .= $script['body'];
}
$this->remove_scripts_group( $buffer, 'include-footer' );
}
if ( $http2push ) {
$this->minify_helpers->http2_header_add( $script['url'], 'script' );
}
}
}
if ( '' !== $head_prepend ) {
$buffer = preg_replace( '~<head(\s+[^>]*)*>~Ui', '\\0' . $head_prepend, $buffer, 1 );
}
if ( '' !== $body_prepend ) {
$buffer = preg_replace( '~<body(\s+[^>]*)*>~Ui', '\\0' . $body_prepend, $buffer, 1 );
}
if ( '' !== $body_append ) {
$buffer = preg_replace( '~<\\/body>~', $body_append . '\\0', $buffer, 1 );
}
if ( $embed_extsrcjs ) {
$script = '
<script>
var extsrc=null;
(function(){function j(){if(b&&g){document.write=k;document.writeln=l;var f=document.createElement("span");f.innerHTML=b;g.appendChild(f);b=""}}function d(){j();for(var f=document.getElementsByTagName("script"),c=0;c<f.length;c++){var e=f[c],h=e.getAttribute("asyncsrc");if(h){e.setAttribute("asyncsrc","");var a=document.createElement("script");a.async=!0;a.src=h;document.getElementsByTagName("head")[0].appendChild(a)}if(h=e.getAttribute("extsrc")){e.setAttribute("extsrc","");g=document.createElement("span");e.parentNode.insertBefore(g,e);document.write=function(a){b+=a};document.writeln=function(a){b+=a;b+="\n"};a=document.createElement("script");a.async=!0;a.src=h;/msie/i.test(navigator.userAgent)&&!/opera/i.test(navigator.userAgent)?a.onreadystatechange=function(){("loaded"==this.readyState||"complete"==this.readyState)&&d()}:-1!=navigator.userAgent.indexOf("Firefox")||"onerror"in a?(a.onload=d,a.onerror=d):(a.onload=d,a.onreadystatechange=d);document.getElementsByTagName("head")[0].appendChild(a);return}}j();document.write=k;document.writeln=l;for(c=0;c<extsrc.complete.funcs.length;c++)extsrc.complete.funcs[c]()}function i(){arguments.callee.done||(arguments.callee.done=!0,d())}extsrc={complete:function(b){this.complete.funcs.push(b)}};extsrc.complete.funcs=[];var k=document.write,l=document.writeln,b="",g="";document.addEventListener&&document.addEventListener("DOMContentLoaded",i,!1);if(/WebKit/i.test(navigator.userAgent))var m=setInterval(function(){/loaded|complete/.test(document.readyState)&&(clearInterval(m),i())},10);window.onload=i})();
</script>
';
$buffer = preg_replace( '~<head(\s+[^>]*)*>~Ui', '\\0' . $script, $buffer, 1 );
}
// Minify HTML/Feed.
if ( $html_enable ) {
try {
$buffer = $this->minify_html( $buffer );
} catch ( \Exception $exception ) {
$this->error = $exception->getMessage();
}
}
return $buffer;
}
/**
* Adds the minify flush item to the WordPress admin bar menu.
*
* @param array $menu_items Array of existing admin bar menu items.
*
* @return array Modified menu items with the minify cache option included.
*/
public function w3tc_admin_bar_menu( $menu_items ) {
$menu_items['20210.minify'] = array(
'id' => 'w3tc_flush_minify',
'parent' => 'w3tc_flush',
'title' => __( 'Minify Cache', 'w3-total-cache' ),
'href' => wp_nonce_url(
admin_url(
'admin.php?page=w3tc_dashboard&w3tc_flush_minify'
),
'w3tc'
),
);
return $menu_items;
}
/**
* Appends a footer comment regarding minification to the HTML strings.
*
* @param array $strings Array of footer comments to append.
*
* @return array Modified array of footer comments.
*/
public function w3tc_footer_comment( $strings ) {
$strings[] = sprintf(
// Translators: 1 engine name, 2 reject reason.
__(
'Minified using %1$s%2$s',
'w3-total-cache'
),
Cache::engine_name( $this->_config->get_string( 'minify.engine' ) ),
( '' !== $this->minify_reject_reason ? sprintf( ' (%s)', $this->minify_reject_reason ) : '' )
);
if ( $this->_config->get_boolean( 'minify.debug' ) ) {
$strings[] = '';
$strings[] = 'Minify debug info:';
$strings[] = sprintf( '%s%s', str_pad( 'Theme: ', 20 ), $this->get_theme() );
$strings[] = sprintf( '%s%s', str_pad( 'Template: ', 20 ), $this->get_template() );
if ( $this->error ) {
$strings[] = sprintf( '%s%s', str_pad( 'Errors: ', 20 ), $this->error );
}
if ( count( $this->replaced_styles ) ) {
$strings[] = 'Replaced CSS files:';
foreach ( $this->replaced_styles as $index => $file ) {
$strings[] = sprintf( '%d. %s', $index + 1, Util_Content::escape_comment( $file ) );
}
}
if ( count( $this->replaced_scripts ) ) {
$strings[] = 'Replaced JavaScript files:';
foreach ( $this->replaced_scripts as $index => $file ) {
$strings[] = sprintf( "%d. %s\r\n", $index + 1, Util_Content::escape_comment( $file ) );
}
}
$strings[] = '';
}
return $strings;
}
/**
* Checks if a custom minification location does not exist.
*
* @param string $pattern Regular expression pattern to search.
* @param string $source Source string to check.
* @param string $script Replacement script for the match.
*
* @return bool True if the location does not exist, false otherwise.
*/
public function _custom_location_does_not_exist( $pattern, &$source, $script ) {
$count = 0;
$source = preg_replace( $pattern, $script, $source, 1, $count );
return 0 === $count;
}
/**
* Removes specified CSS files from the provided content.
*
* @param string $content HTML content to search for CSS references.
* @param array $files List of CSS files to remove.
*
* @return void
*/
public function remove_styles( &$content, $files ) {
$regexps = array();
$home_url_regexp = Util_Environment::home_url_regexp();
$path = '';
if ( Util_Environment::is_wpmu() && ! Util_Environment::is_wpmu_subdomain() ) {
$path = ltrim( Util_Environment::home_url_uri(), '/' );
}
foreach ( $files as $file ) {
if ( $path && strpos( $file, $path ) === 0 ) {
$file = substr( $file, strlen( $path ) );
}
$this->replaced_styles[] = $file;
if ( Util_Environment::is_url( $file ) && ! preg_match( '~' . $home_url_regexp . '~i', $file ) ) {
// external CSS files.
$regexps[] = Util_Environment::preg_quote( $file );
} else {
// local CSS files.
$file = ltrim( $file, '/' );
if (
home_url() === site_url() &&
ltrim( Util_Environment::site_url_uri(), '/' ) &&
strpos( $file, ltrim( Util_Environment::site_url_uri(), '/' ) ) === 0
) {
$file = str_replace( ltrim( Util_Environment::site_url_uri(), '/' ), '', $file );
}
$file = ltrim( preg_replace( '~' . $home_url_regexp . '~i', '', $file ), '/\\' );
$regexps[] = '(' . $home_url_regexp . ')?/?' . Util_Environment::preg_quote( $file );
}
}
foreach ( $regexps as $regexp ) {
$content = preg_replace( '~<link\s+[^<>]*href=["\']?' . $regexp . '["\']?[^<>]*/?>(.*</link>)?~Uis', '', $content );
$content = preg_replace( '~@import\s+(url\s*)?\(?["\']?\s*' . $regexp . '\s*["\']?\)?[^;]*;?~is', '', $content );
}
$content = preg_replace( '~<style[^<>]*>\s*</style>~', '', $content );
}
/**
* Removes specified JavaScript files from the provided content.
*
* @param string $content HTML content to search for script references.
* @param array $files List of JavaScript files to remove.
*
* @return void
*/
public function remove_scripts( &$content, $files ) {
$regexps = array();
$home_url_regexp = Util_Environment::home_url_regexp();
$path = '';
if ( Util_Environment::is_wpmu() && ! Util_Environment::is_wpmu_subdomain() ) {
$path = ltrim( Util_Environment::network_home_url_uri(), '/' );
}
foreach ( $files as $file ) {
if ( $path && strpos( $file, $path ) === 0 ) {
$file = substr( $file, strlen( $path ) );
}
$this->replaced_scripts[] = $file;
if ( Util_Environment::is_url( $file ) && ! preg_match( '~' . $home_url_regexp . '~i', $file ) ) {
// external JS files.
$regexps[] = Util_Environment::preg_quote( $file );
} else {
// local JS files.
$file = ltrim( $file, '/' );
if (
home_url() === site_url() &&
ltrim( Util_Environment::site_url_uri(), '/' ) &&
strpos( $file, ltrim( Util_Environment::site_url_uri(), '/' ) ) === 0
) {
$file = str_replace( ltrim( Util_Environment::site_url_uri(), '/' ), '', $file );
}
$file = ltrim( preg_replace( '~' . $home_url_regexp . '~i', '', $file ), '/\\' );
$regexps[] = '(' . $home_url_regexp . ')?/?' . Util_Environment::preg_quote( $file );
}
}
foreach ( $regexps as $regexp ) {
$content = preg_replace( '~<script\s+[^<>]*src=["\']?' . $regexp . '["\']?[^<>]*>\s*</script>~Uis', '', $content );
}
}
/**
* Removes a group of CSS files for a specified location.
*
* @param string $content HTML content to search for CSS references.
* @param string $location Location identifier for the CSS group.
*
* @return void
*/
public function remove_styles_group( &$content, $location ) {
$theme = $this->get_theme();
$template = $this->get_template();
$files = array();
$groups = $this->_config->get_array( 'minify.css.groups' );
if ( isset( $groups[ $theme ]['default'][ $location ]['files'] ) ) {
$files = (array) $groups[ $theme ]['default'][ $location ]['files'];
}
if ( 'default' !== $template && isset( $groups[ $theme ][ $template ][ $location ]['files'] ) ) {
$files = array_merge( $files, (array) $groups[ $theme ][ $template ][ $location ]['files'] );
}
$this->remove_styles( $content, $files );
}
/**
* Removes a group of JavaScript files for a specified location.
*
* @param string $content HTML content to search for script references.
* @param string $location Location identifier for the script group.
*
* @return void
*/
public function remove_scripts_group( &$content, $location ) {
$theme = $this->get_theme();
$template = $this->get_template();
$files = array();
$groups = $this->_config->get_array( 'minify.js.groups' );
if ( isset( $groups[ $theme ]['default'][ $location ]['files'] ) ) {
$files = (array) $groups[ $theme ]['default'][ $location ]['files'];
}
if ( 'default' !== $template && isset( $groups[ $theme ][ $template ][ $location ]['files'] ) ) {
$files = array_merge( $files, (array) $groups[ $theme ][ $template ][ $location ]['files'] );
}
$this->remove_scripts( $content, $files );
}
/**
* Minifies the provided HTML content.
*
* @param string $html HTML content to minify.
*
* @return string Minified HTML content.
*/
public function minify_html( $html ) {
$w3_minifier = Dispatcher::component( 'Minify_ContentMinifier' );
$ignored_comments = $this->_config->get_array( 'minify.html.comments.ignore' );
if ( count( $ignored_comments ) ) {
$ignored_comments_preserver = new \W3TCL\Minify\Minify_IgnoredCommentPreserver();
$ignored_comments_preserver->setIgnoredComments( $ignored_comments );
$html = $ignored_comments_preserver->search( $html );
}
if ( $this->_config->get_boolean( 'minify.html.inline.js' ) ) {
$js_engine = $this->_config->get_string( 'minify.js.engine' );
if ( ! $w3_minifier->exists( $js_engine ) || ! $w3_minifier->available( $js_engine ) ) {
$js_engine = 'js';
}
$js_minifier = $w3_minifier->get_minifier( $js_engine );
$js_options = $w3_minifier->get_options( $js_engine );
$w3_minifier->init( $js_engine );
$html = \W3TCL\Minify\Minify_Inline_JavaScript::minify( $html, $js_minifier, $js_options );
}
if ( $this->_config->get_boolean( 'minify.html.inline.css' ) ) {
$css_engine = $this->_config->get_string( 'minify.css.engine' );
if ( ! $w3_minifier->exists( $css_engine ) || ! $w3_minifier->available( $css_engine ) ) {
$css_engine = 'css';
}
$css_minifier = $w3_minifier->get_minifier( $css_engine );
$css_options = $w3_minifier->get_options( $css_engine );
$w3_minifier->init( $css_engine );
$html = \W3TCL\Minify\Minify_Inline_CSS::minify( $html, $css_minifier, $css_options );
}
$engine = $this->_config->get_string( 'minify.html.engine' );
if ( ! $w3_minifier->exists( $engine ) || ! $w3_minifier->available( $engine ) ) {
$engine = 'html';
}
if ( function_exists( 'is_feed' ) && is_feed() ) {
$engine .= 'xml';
}
$minifier = $w3_minifier->get_minifier( $engine );
$options = $w3_minifier->get_options( $engine );
$w3_minifier->init( $engine );
$html = call_user_func( $minifier, $html, $options );
if ( isset( $ignored_comments_preserver ) ) {
$html = $ignored_comments_preserver->replace( $html );
}
return $html;
}
/**
* Retrieves the current theme identifier.
*
* @return string Theme identifier.
*/
public function get_theme() {
static $theme = null;
if ( null === $theme ) {
$theme = Util_Theme::get_theme_key( get_theme_root(), get_template(), get_stylesheet() );
}
return $theme;
}
/**
* Retrieves the current template identifier.
*
* phpcs:disable WordPress.CodeAnalysis.AssignmentInCondition.Found
* phpcs:disable Squiz.PHP.DisallowMultipleAssignments.Found
* phpcs:disable Generic.CodeAnalysis.AssignmentInCondition.Found
*
* @return string Template identifier.
*/
public function get_template() {
static $template = null;
if ( null === $template ) {
$template_file = 'index.php';
switch ( true ) {
case ( is_404() && ( $template_file = get_404_template() ) ):
case ( is_search() && ( $template_file = get_search_template() ) ):
case ( is_tax() && ( $template_file = get_taxonomy_template() ) ):
case ( is_front_page() && function_exists( 'get_front_page_template' ) && $template_file = get_front_page_template() ):
case ( is_home() && ( $template_file = get_home_template() ) ):
case ( is_attachment() && ( $template_file = get_attachment_template() ) ):
case ( is_single() && ( $template_file = get_single_template() ) ):
case ( is_page() && ( $template_file = get_page_template() ) ):
case ( is_category() && ( $template_file = get_category_template() ) ):
case ( is_tag() && ( $template_file = get_tag_template() ) ):
case ( is_author() && ( $template_file = get_author_template() ) ):
case ( is_date() && ( $template_file = get_date_template() ) ):
case ( is_archive() && ( $template_file = get_archive_template() ) ):
case ( is_paged() && ( $template_file = get_query_template( 'paged' ) ) ):
break;
default:
if ( function_exists( 'get_index_template' ) ) {
$template_file = get_index_template();
} else {
$template_file = 'index.php';
}
break;
}
$template = basename( $template_file, '.php' );
}
return $template;
}
/**
* Generates the HTML markup for including a stylesheet.
*
* phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
*
* @param string $url URL of the stylesheet.
* @param bool $import Whether to use @import syntax.
* @param bool $use_style Whether to wrap @import in <style> tags.
*
* @return string Generated HTML markup.
*/
public function get_style( $url, $import = false, $use_style = true ) {
if ( $import && $use_style ) {
return '<style media="all">@import url("' . $url . "\");</style>\r\n";
} elseif ( $import && ! $use_style ) {
return '@import url("' . $url . "\");\r\n";
} else {
return '<link rel="stylesheet" href="' . str_replace( '&', '&', $url ) . "\" media=\"all\" />\r\n";
}
}
/**
* Retrieves the details of a grouped CSS style by location.
*
* @param string $location Location identifier for the style group.
*
* @return array Associative array containing 'url' and 'body' keys.
*/
public function get_style_group( $location ) {
$style = false;
$type = 'css';
$groups = $this->_config->get_array( 'minify.css.groups' );
$theme = $this->get_theme();
$template = $this->get_template();
if ( 'default' !== $template && empty( $groups[ $theme ][ $template ][ $location ]['files'] ) ) {
$template = 'default';
}
$return = array(
'url' => null,
'body' => '',
);
if ( ! empty( $groups[ $theme ][ $template ][ $location ]['files'] ) ) {
if ( $this->_config->get_boolean( 'minify.css.embed' ) ) {
$minify = Dispatcher::component( 'Minify_MinifiedFileRequestHandler' );
$minify_filename = $this->get_minify_manual_filename( $theme, $template, $location, $type );
$m = $minify->process( $minify_filename, true );
if ( isset( $m['content'] ) ) {
$style = $m['content'];
} else {
$style = 'not set';
}
$return['body'] = "<style media=\"all\">$style</style>\r\n";
} else {
$return['url'] = $this->get_minify_manual_url( $theme, $template, $location, $type );
if ( $return['url'] ) {
$import = (
isset( $groups[ $theme ][ $template ][ $location ]['import'] ) ?
(bool) $groups[ $theme ][ $template ][ $location ]['import'] :
false
);
$return['body'] = $this->get_style( $return['url'], $import );
}
}
}
return $return;
}
/**
* Retrieves the script group for the specified location and embed type.
*
* @param string $location The location of the scripts (e.g., 'header', 'footer').
* @param string $embed_type The embed type, defaults to 'blocking'.
*
* @return array Associative array containing 'url' and 'body'.
*/
public function get_script_group( $location, $embed_type = 'blocking' ) {
$script = false;
$file_type = 'js';
$theme = $this->get_theme();
$template = $this->get_template();
$groups = $this->_config->get_array( 'minify.js.groups' );
if ( 'default' !== $template && empty( $groups[ $theme ][ $template ][ $location ]['files'] ) ) {
$template = 'default';
}
$return = array(
'url' => null,
'body' => '',
);
if ( ! empty( $groups[ $theme ][ $template ][ $location ]['files'] ) ) {
$return['url'] = $this->get_minify_manual_url( $theme, $template, $location, $file_type );
if ( $return['url'] ) {
$return['body'] = $this->minify_helpers->generate_script_tag( $return['url'], $embed_type );
}
}
return $return;
}
/**
* Generates a style tag or URL for custom styles.
*
* @param array $files Array of file paths for the styles.
* @param bool $embed_to_html Whether to embed styles directly in HTML.
*
* @return array Associative array containing 'url' and 'body'.
*/
public function get_style_custom( $files, $embed_to_html = false ) {
return $this->minify_helpers->generate_css_style_tag( $files, $embed_to_html );
}
/**
* Retrieves the manual filename for minified resources.
*
* @param string $theme The theme name.
* @param string $template The template name.
* @param string $location The location identifier.
* @param string $type The resource type ('js' or 'css').
*
* @return string|false The generated filename or false if not available.
*/
public function get_minify_manual_filename( $theme, $template, $location, $type ) {
$minify = Dispatcher::component( 'Minify_MinifiedFileRequestHandler' );
$id = $minify->get_id_group( $theme, $template, $location, $type );
if ( ! $id ) {
return false;
}
return $theme . '.' . $template . '.' . $location . '.' . $id . '.' . $type;
}
/**
* Retrieves the manual URL for minified resources.
*
* @param string $theme The theme name.
* @param string $template The template name.
* @param string $location The location identifier.
* @param string $type The resource type ('js' or 'css').
*
* @return string The generated URL.
*/
public function get_minify_manual_url( $theme, $template, $location, $type ) {
return Minify_Core::minified_url( $this->get_minify_manual_filename( $theme, $template, $location, $type ) );
}
/**
* Retrieves an array of all URLs for minified resources.
*
* @return array Array of URLs.
*/
public function get_urls() {
$files = array();
$js_groups = $this->_config->get_array( 'minify.js.groups' );
$css_groups = $this->_config->get_array( 'minify.css.groups' );
foreach ( $js_groups as $js_theme => $js_templates ) {
foreach ( $js_templates as $js_template => $js_locations ) {
foreach ( (array) $js_locations as $js_location => $js_config ) {
if ( ! empty( $js_config['files'] ) ) {
$files[] = $this->get_minify_manual_url( $js_theme, $js_template, $js_location, 'js' );
}
}
}
}
foreach ( $css_groups as $css_theme => $css_templates ) {
foreach ( $css_templates as $css_template => $css_locations ) {
foreach ( (array) $css_locations as $css_location => $css_config ) {
if ( ! empty( $css_config['files'] ) ) {
$files[] = $this->get_minify_manual_url( $css_theme, $css_template, $css_location, 'css' );
}
}
}
}
return $files;
}
/**
* Checks whether minification can be applied based on the current environment.
*
* @return bool True if minification can proceed, false otherwise.
*/
public function can_minify() {
// Skip if doint AJAX.
if ( defined( 'DOING_AJAX' ) ) {
$this->minify_reject_reason = 'Doing AJAX';
return false;
}
// Skip if doing cron.
if ( defined( 'DOING_CRON' ) ) {
$this->minify_reject_reason = 'Doing cron';
return false;
}
// Skip if APP request.
if ( defined( 'APP_REQUEST' ) ) {
$this->minify_reject_reason = 'Application request';
return false;
}
// Skip if XMLRPC request.
if ( defined( 'XMLRPC_REQUEST' ) ) {
$this->minify_reject_reason = 'XMLRPC request';
return false;
}
// Skip if Admin.
if ( defined( 'WP_ADMIN' ) ) {
$this->minify_reject_reason = 'wp-admin';
return false;
}
// Check for WPMU's and WP's 3.0 short init.
if ( defined( 'SHORTINIT' ) && SHORTINIT ) {
$this->minify_reject_reason = 'Short init';
return false;
}
// Check User agent.
if ( ! $this->check_ua() ) {
$this->minify_reject_reason = 'User agent is rejected';
return false;
}
// Check request URI.
if ( ! $this->check_request_uri() ) {
$this->minify_reject_reason = 'Request URI is rejected';
return false;
}
// Skip if user is logged in.
if ( $this->_config->get_boolean( 'minify.reject.logged' ) && ! $this->check_logged_in() ) {
$this->minify_reject_reason = 'User is logged in';
return false;
}
return true;
}
/**
* Checks whether minification can be applied to the provided buffer.
*
* @param string $buffer The buffer to check.
*
* @return bool True if the buffer can be minified, false otherwise.
*/
public function can_minify2( $buffer ) {
// Check for DONOTMINIFY constant.
if ( defined( 'DONOTMINIFY' ) && DONOTMINIFY ) {
$this->minify_reject_reason = 'DONOTMINIFY constant is defined';
return false;
}
// Check feed minify.
if ( $this->_config->get_boolean( 'minify.html.reject.feed' ) && function_exists( 'is_feed' ) && is_feed() ) {
$this->minify_reject_reason = 'Feed is rejected';
return false;
}
return true;
}
/**
* Validates the user agent for minification.
*
* @return bool True if the user agent is allowed, false otherwise.
*/
public function check_ua() {
$uas = array_merge(
$this->_config->get_array( 'minify.reject.ua' ),
array(
W3TC_POWERED_BY,
)
);
foreach ( $uas as $ua ) {
if ( ! empty( $ua ) ) {
if ( stristr( isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) ) : '', $ua ) !== false ) {
return false;
}
}
}
return true;
}
/**
* Checks whether the current user is logged in.
*
* @return bool True if the user is not logged in, false otherwise.
*/
public function check_logged_in() {
foreach ( array_keys( $_COOKIE ) as $cookie_name ) {
if ( strpos( $cookie_name, 'wordpress_logged_in' ) === 0 ) {
return false;
}
}
return true;
}
/**
* Validates the request URI for minification.
*
* @return bool True if the URI is valid, false otherwise.
*/
public function check_request_uri() {
$auto_reject_uri = array(
'wp-login',
'wp-register',
);
foreach ( $auto_reject_uri as $uri ) {
if ( strstr( isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '', $uri ) !== false ) {
return false;
}
}
$reject_uri = $this->_config->get_array( 'minify.reject.uri' );
$reject_uri = array_map( array( '\W3TC\Util_Environment', 'parse_path' ), $reject_uri );
foreach ( $reject_uri as $expr ) {
$expr = trim( $expr );
$expr = str_replace( '~', '\~', $expr );
if ( '' !== $expr && preg_match( '~' . $expr . '~i', isset( $_SERVER['REQUEST_URI'] ) ? esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '' ) ) {
return false;
}
}
if ( Util_Request::get_string( 'wp_customize' ) ) {
return false;
}
return true;
}
/**
* Collects usage statistics for the current request.
*
* @param mixed $storage The storage object or array for the statistics.
*
* @return void
*/
public function w3tc_usage_statistics_of_request( $storage ) {
$o = Dispatcher::component( 'Minify_MinifiedFileRequestHandler' );
$o->w3tc_usage_statistics_of_request( $storage );
}
/**
* Adds minification-related metrics to the usage statistics.
*
* @param array $metrics Existing metrics array.
*
* @return array Modified metrics array.
*/
public function w3tc_usage_statistics_metrics( $metrics ) {
return array_merge(
$metrics,
array(
'minify_requests_total',
'minify_original_length_css',
'minify_output_length_css',
'minify_original_length_js',
'minify_output_length_js',
)
);
}
/**
* Modifies or stores preload Link headers for page caching.
*
* @param array $header The current header being processed.
* @param array $header_original The original header details.
*
* @return array The modified header.
*/
public function w3tc_pagecache_set_header( $header, $header_original ) {
if ( 'Link' === $header_original['n'] && false !== strpos( $header_original['v'], 'rel=preload' ) ) {
// store preload Link headers in cache.
$new = $header_original;
$new['files_match'] = '\\.html[_a-z]*$';
return $new;
}
return $header;
}
}
/**
* Class _W3_MinifyHelpers
*
* phpcs:disable Generic.Files.OneObjectStructurePerFile.MultipleFound
* phpcs:disable PEAR.NamingConventions.ValidClassName.StartWithCapital
*/
class _W3_MinifyHelpers {
/**
* Config
*
* @var Config
*/
private $config;
/**
* Debug flag
*
* @var bool
*/
private $debug = false;
/**
* Initializes the _W3_MinifyHelpers class.
*
* @param Config $config Configuration instance used for the class.
*
* @return void
*/
public function __construct( $config ) {
$this->config = $config;
$this->debug = $config->get_boolean( 'minify.debug' );
}
/**
* Retrieves the minified URL for a given set of files and type.
*
* @param array $files Array of file paths to be minified.
* @param string $type Type of files (e.g., 'css', 'js').
*
* @return string|null The minified URL or null if no URL is generated.
*/
public function get_minify_url_for_files( $files, $type ) {
$minify_filename = Minify_Core::urls_for_minification_to_minify_filename( $files, $type );
if ( is_null( $minify_filename ) ) {
return null;
}
$url = Minify_Core::minified_url( $minify_filename );
$url = Util_Environment::url_to_maybe_https( $url );
$url = apply_filters( 'w3tc_minify_url_for_files', $url, $files, $type );
return $url;
}
/**
* Retrieves the minified content for a given set of files and type.
*
* @param array $files Array of file paths to be minified.
* @param string $type Type of files (e.g., 'css', 'js').
*
* @return string|null The minified content wrapped in HTML or null if no content is available.
*/
public function get_minified_content_for_files( $files, $type ) {
$minify_filename = Minify_Core::urls_for_minification_to_minify_filename( $files, $type );
if ( is_null( $minify_filename ) ) {
return null;
}
$minify = Dispatcher::component( 'Minify_MinifiedFileRequestHandler' );
$m = $minify->process( $minify_filename, true );
if ( ! isset( $m['content'] ) ) {
return null;
}
if ( empty( $m['content'] ) ) {
return null;
}
$style = $m['content'];
return "<style media=\"all\">$style</style>\r\n";
}
/**
* Generates a script tag for a given URL and embed type.
*
* @param string $url URL of the script.
* @param string $embed_type Type of embed (e.g., 'blocking', 'nb-js', 'nb-async').
*
* @return string The generated script tag.
*/
public function generate_script_tag( $url, $embed_type = 'blocking' ) {
static $non_blocking_function = false;
$rocket_loader_ignore = '';
if ( $this->config->get_boolean( array( 'cloudflare', 'minify_js_rl_exclude' ) ) ) {
$rocket_loader_ignore = 'data-cfasync="false"';
}
if ( 'blocking' === $embed_type ) {
$script = '<script ' . $rocket_loader_ignore . ' src="' . str_replace( '&', '&', $url ) . '"></script>';
} else {
$script = '';
if ( 'nb-js' === $embed_type ) {
if ( ! $non_blocking_function ) {
$non_blocking_function = true;
$script = "<script>function w3tc_load_js(u){var d=document,p=d.getElementsByTagName('HEAD')[0],c=d.createElement('script');c.src=u;p.appendChild(c);}</script>";
}
$script .= "<script>w3tc_load_js('" . $url . "');</script>";
} elseif ( 'nb-async' === $embed_type ) {
$script = '<script ' . $rocket_loader_ignore . ' async src="' . str_replace( '&', '&', $url ) . '"></script>';
} elseif ( 'nb-defer' === $embed_type ) {
$script = '<script ' . $rocket_loader_ignore . ' defer src="' . str_replace( '&', '&', $url ) . '"></script>';
} elseif ( 'extsrc' === $embed_type ) {
$script = '<script ' . $rocket_loader_ignore . ' extsrc="' . str_replace( '&', '&', $url ) . '"></script>';
} elseif ( 'asyncsrc' === $embed_type ) {
$script = '<script ' . $rocket_loader_ignore . ' asyncsrc="' . str_replace( '&', '&', $url ) . '"></script>';
} else {
$script = '<script ' . $rocket_loader_ignore . ' src="' . str_replace( '&', '&', $url ) . '"></script>';
}
}
return $script . "\r\n";
}
/**
* Determines whether a given file or URL should be minified.
*
* @param string $url URL of the file to check.
* @param string $file File path to check (optional).
*
* @return string Indicates the type of minification ('url', 'file', or empty string).
*/
public function is_file_for_minification( $url, $file ) {
static $external;
static $external_regexp;
if ( ! isset( $external ) ) {
$external = $this->config->get_array( 'minify.cache.files' );
$external_regexp = $this->config->get_boolean( 'minify.cache.files_regexp' );
}
foreach ( $external as $item ) {
if ( empty( $item ) ) {
continue;
}
if ( $external_regexp ) {
$item = str_replace( '~', '\~', $item );
if ( ! preg_match( '~' . $item . '~', $url ) ) {
continue;
}
} elseif ( ! preg_match( '~^' . Util_Environment::get_url_regexp( $item ) . '~', $url ) ) {
continue;
}
if ( $this->debug ) {
Minify_Core::log( 'is_file_for_minification: whilelisted ' . $url . ' by ' . $item );
}
return 'url';
}
if ( is_null( $file ) ) {
if ( $this->debug ) {
Minify_Core::log( 'is_file_for_minification: external not whitelisted url ' . $url );
}
return '';
}
$file_normalized = Util_Environment::remove_query_all( $file );
$ext = strrchr( $file_normalized, '.' );
if ( '.js' !== $ext && '.css' !== $ext ) {
if ( $this->debug ) {
Minify_Core::log( 'is_file_for_minification: unknown extension ' . $ext . ' for ' . $file );
}
return '';
}
$path = Util_Environment::docroot_to_full_filename( $file );
if ( ! file_exists( $path ) ) {
if ( $this->debug ) {
Minify_Core::log( 'is_file_for_minification: file doesnt exists ' . $path );
}
return '';
}
if ( $this->debug ) {
Minify_Core::log( 'is_file_for_minification: true for file ' . $file . ' path ' . $path );
}
return 'file';
}
/**
* Adds an HTTP/2 header for preloading a given URL.
*
* @param string $url URL to be preloaded.
* @param string $type Resource type (e.g., 'script', 'style').
*
* @return void
*/
public function http2_header_add( $url, $type ) {
if ( empty( $url ) ) {
return;
}
// Cloudflare needs URI without host.
$uri = Util_Environment::url_to_uri( $url );
// priorities attached:
// 3000 - cdn
// 4000 - browsercache.
$data = apply_filters(
'w3tc_minify_http2_preload_url',
array(
'result_link' => $uri,
'original_url' => $url,
)
);
header( 'Link: <' . $data['result_link'] . '>; rel=preload; as=' . $type, false );
}
/**
* Generates a CSS style tag or URL for embedding styles.
*
* @param array $files Array of CSS file paths.
* @param bool $embed_to_html Whether to embed the CSS content directly into the HTML.
*
* @return array Contains 'url' (string|null) and 'body' (string) keys.
*/
public function generate_css_style_tag( $files, $embed_to_html ) {
$return = array(
'url' => null,
'body' => '',
);
if ( count( $files ) ) {
if ( $embed_to_html ) {
$body = $this->get_minified_content_for_files( $files, 'css' );
if ( ! is_null( $body ) ) {
$return['body'] = $body;
}
}
if ( empty( $return['body'] ) ) {
$return['url'] = $this->get_minify_url_for_files( $files, 'css' );
if ( ! is_null( $return['url'] ) ) {
$return['body'] = '<link rel="stylesheet" href="' . // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
str_replace( '&', '&', $return['url'] ) . "\" media=\"all\" />\r\n";
}
}
}
return $return;
}
}