File: /var/www/wordpress/wp-content/plugins/jetpack-boost/app/lib/minify/class-concatenate-js.php
<?php
namespace Automattic\Jetpack_Boost\Lib\Minify;
use WP_Scripts;
// Disable complaints about enqueuing scripts, as this class alters the way enqueuing them works.
// phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedScript
/**
* Replacement for, and subclass of WP_Scripts - used to control the way that scripts are enqueued and output.
*/
class Concatenate_JS extends WP_Scripts {
private $dependency_path_mapping;
private $old_scripts;
public $allow_gzip_compression;
public function __construct( $scripts ) {
if ( empty( $scripts ) || ! ( $scripts instanceof WP_Scripts ) ) {
$this->old_scripts = new WP_Scripts();
} else {
$this->old_scripts = $scripts;
}
// Unset all the object properties except our private copy of the scripts object.
// We have to unset everything so that the overload methods talk to $this->old_scripts->whatever
// instead of $this->whatever.
foreach ( array_keys( get_object_vars( $this ) ) as $key ) {
if ( 'old_scripts' === $key ) {
continue;
}
unset( $this->$key );
}
$this->dependency_path_mapping = new Dependency_Path_Mapping(
/**
* Filter the URL of the site the plugin will be concatenating CSS or JS on
*
* @param bool $url URL of the page with CSS or JS to concatonate.
*
* @since 1.0.0
*/
apply_filters( 'page_optimize_site_url', $this->base_url )
);
}
protected function has_inline_content( $handle ) {
$before_output = $this->get_data( $handle, 'before' );
if ( ! empty( $before_output ) ) {
return true;
}
$after_output = $this->get_data( $handle, 'after' );
if ( ! empty( $after_output ) ) {
return true;
}
// JavaScript translations
$has_translations = ! empty( $this->registered[ $handle ]->textdomain );
if ( $has_translations ) {
return true;
}
return false;
}
/**
* Override for WP_Scripts::do_item() - this is the method that actually outputs the scripts.
*/
public function do_items( $handles = false, $group = false ) {
$handles = false === $handles ? $this->queue : (array) $handles;
$javascripts = array();
/**
* Filter the URL of the site the plugin will be concatenating CSS or JS on
*
* @param bool $url URL of the page with CSS or JS to concatonate.
*
* @since 1.0.0
*/
$siteurl = apply_filters( 'page_optimize_site_url', $this->base_url );
$this->all_deps( $handles );
$level = 0;
$using_strict = false;
$strict_count = 0;
foreach ( $this->to_do as $key => $handle ) {
$script_is_strict = false;
if ( in_array( $handle, $this->done, true ) || ! isset( $this->registered[ $handle ] ) ) {
continue;
}
if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
$this->in_footer[] = $handle;
unset( $this->to_do[ $key ] );
continue;
}
if ( ! $this->registered[ $handle ]->src ) { // Defines a group.
if ( $this->has_inline_content( $handle ) ) {
++$level;
$javascripts[ $level ]['type'] = 'do_item';
$javascripts[ $level ]['handle'] = $handle;
++$level;
unset( $this->to_do[ $key ] );
} else {
// if there are localized items, echo them
$this->print_extra_script( $handle );
$this->done[] = $handle;
}
continue;
}
if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
$this->in_footer = array_diff( $this->in_footer, (array) $handle );
}
$obj = $this->registered[ $handle ];
$js_url = jetpack_boost_enqueued_to_absolute_url( $obj->src );
$js_url_parsed = wp_parse_url( $js_url );
// Don't concat by default
$do_concat = false;
// Only try to concat static js files
if ( str_contains( $js_url_parsed['path'], '.js' ) ) {
// Previously, the value of this variable was determined by a function.
// Now, since concatenation is always enabled when the module is active,
// the value will always be true for static files.
$do_concat = true;
} elseif ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Maybe Not Static File %s -->\n", esc_html( $handle ), esc_html( $obj->src ) );
}
// Don't try to concat externally hosted scripts
$is_internal_uri = $this->dependency_path_mapping->is_internal_uri( $js_url );
if ( $do_concat && ! $is_internal_uri ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => External URL: %s -->\n", esc_html( $handle ), esc_url( $js_url ) );
}
$do_concat = false;
}
$js_realpath = false;
if ( $do_concat ) {
// Resolve paths and concat scripts that exist in the filesystem
$js_realpath = $this->dependency_path_mapping->dependency_src_to_fs_path( $js_url );
if ( false === $js_realpath ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Invalid Path %s -->\n", esc_html( $handle ), esc_html( $js_realpath ) );
}
$do_concat = false;
}
}
if ( $do_concat && $this->has_inline_content( $handle ) ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Has Inline Content -->\n", esc_html( $handle ) );
}
$do_concat = false;
}
// Skip core scripts that use Strict Mode
if ( $do_concat && ( 'react' === $handle || 'react-dom' === $handle ) ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Has Strict Mode (Core) -->\n", esc_html( $handle ) );
}
$do_concat = false;
$script_is_strict = true;
// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
} elseif ( $do_concat && preg_match_all( '/^[\',"]use strict[\',"];/Uims', file_get_contents( $js_realpath ), $matches ) ) {
// Skip third-party scripts that use Strict Mode
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Has Strict Mode (Third-Party) -->\n", esc_html( $handle ) );
}
$do_concat = false;
$script_is_strict = true;
} else {
$script_is_strict = false;
}
// Skip concating scripts from exclusion list
$exclude_list = jetpack_boost_page_optimize_js_exclude_list();
foreach ( $exclude_list as $exclude ) {
if ( $do_concat && $handle === $exclude ) {
$do_concat = false;
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Excluded option -->\n", esc_html( $handle ) );
}
}
}
/** This filter is documented in wp-includes/class-wp-scripts.php */
$js_url = esc_url_raw( apply_filters( 'script_loader_src', $js_url, $handle ) );
if ( ! $js_url ) {
$do_concat = false;
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => No URL -->\n", esc_html( $handle ) );
}
} elseif ( 'module' === $this->get_script_type( $handle, $js_url ) ) {
$do_concat = false;
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Module Script -->\n", esc_html( $handle ) );
}
}
/**
* Filter that allows plugins to disable concatenation of certain scripts.
*
* @param bool $do_concat if true, then perform concatenation
* @param string $handle handle to JS file
*
* @since 1.0.0
*/
if ( $do_concat && ! apply_filters( 'js_do_concat', $do_concat, $handle ) ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
printf( "\n<!-- No Concat JS %s => Filtered `false` -->\n", esc_html( $handle ) );
}
}
/**
* Filter that allows plugins to disable concatenation of certain scripts.
*
* @param bool $do_concat if true, then perform concatenation
* @param string $handle handle to JS file
*
* @since 1.0.0
*/
$do_concat = apply_filters( 'js_do_concat', $do_concat, $handle );
if ( true === $do_concat ) {
// If the number of files in the group is greater than the maximum, start a new group.
if ( isset( $javascripts[ $level ] ) && count( $javascripts[ $level ]['handles'] ) >= jetpack_boost_minify_concat_max_files() ) {
++$level;
}
if ( ! isset( $javascripts[ $level ] ) ) {
$javascripts[ $level ]['type'] = 'concat';
}
$javascripts[ $level ]['paths'][] = $js_url_parsed['path'];
$javascripts[ $level ]['handles'][] = $handle;
} else {
++$level;
$javascripts[ $level ]['type'] = 'do_item';
$javascripts[ $level ]['handle'] = $handle;
++$level;
}
unset( $this->to_do[ $key ] );
if ( $using_strict !== $script_is_strict ) {
if ( $script_is_strict ) {
$using_strict = true;
$strict_count = 0;
} else {
$using_strict = false;
}
}
if ( $script_is_strict ) {
++$strict_count;
}
}
if ( empty( $javascripts ) ) {
return $this->done;
}
foreach ( $javascripts as $js_array ) {
if ( 'do_item' === $js_array['type'] ) {
if ( $this->do_item( $js_array['handle'], $group ) ) {
$this->done[] = $js_array['handle'];
}
} elseif ( 'concat' === $js_array['type'] ) {
array_map( array( $this, 'print_extra_script' ), $js_array['handles'] );
if ( isset( $js_array['paths'] ) && count( $js_array['paths'] ) > 1 ) {
$file_name = jetpack_boost_page_optimize_generate_concat_path( $js_array['paths'], $this->dependency_path_mapping );
if ( get_site_option( 'jetpack_boost_static_minification' ) ) {
$href = jetpack_boost_get_minify_url( $file_name . '.min.js' );
} else {
$href = $siteurl . jetpack_boost_get_static_prefix() . '??' . $file_name;
}
} elseif ( isset( $js_array['paths'] ) && is_array( $js_array['paths'] ) ) {
$href = jetpack_boost_page_optimize_cache_bust_mtime( $js_array['paths'][0], $siteurl );
}
$this->done = array_merge( $this->done, $js_array['handles'] );
// Print before/after scripts from wp_inline_scripts() and concatenated script tag
if ( isset( $js_array['extras']['before'] ) ) {
foreach ( $js_array['extras']['before'] as $inline_before ) {
// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
echo $inline_before;
}
}
if ( isset( $href ) ) {
$handles = implode( ',', $js_array['handles'] );
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
$tag = "<script data-handles='" . esc_attr( $handles ) . "' type='text/javascript' src='" . esc_url( $href ) . "'></script>\n";
} else {
$tag = "<script type='text/javascript' src='" . esc_url( $href ) . "'></script>\n";
}
if ( is_array( $js_array['handles'] ) && count( $js_array['handles'] ) === 1 ) {
/**
* Filters the HTML script tag of an enqueued script
* A copy of the core filter of the same name. https://developer.wordpress.org/reference/hooks/script_loader_tag/
* Because we have a single script, let's apply the `script_loader_tag` filter as core does in `do_item()`.
* That way, we interfere less with plugin and theme script filtering. For example, without this filter,
* there is a case where we block the TwentyTwenty theme from adding async/defer attributes.
* https://github.com/Automattic/page-optimize/pull/44
*
* @param string $tag Script tag for the enqueued script.
* @param string $handle The script's registered handle.
* @param string $href URL of the script.
*
* @since 1.0.0
*/
$tag = apply_filters( 'script_loader_tag', $tag, $js_array['handles'][0], $href );
}
// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
echo $tag;
}
if ( isset( $js_array['extras']['after'] ) ) {
foreach ( $js_array['extras']['after'] as $inline_after ) {
// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
echo $inline_after;
}
}
}
}
do_action( 'js_concat_did_items', $javascripts );
return $this->done;
}
/**
* Returns the type of the script.
* module, text/javascript, etc. False if the script tag is invalid,
* or the type is not set.
*
* @since 4.1.2
*
* @param string $handle The script's registered handle.
* @param string $src The script's source URL.
*
* @return string|false The type of the script. False if the script tag is invalid,
* or the type is not set.
*/
private function get_script_type( $handle, $src ) {
$script_tag_attr = array(
'src' => $src,
'id' => "$handle-js",
);
// Get the script tag and allow plugins to filter it.
$script_tag = wp_get_script_tag( $script_tag_attr );
// This is a workaround to get the type of the script without outputting it.
$script_tag = apply_filters( 'script_loader_tag', $script_tag, $handle, $src );
$processor = new \WP_HTML_Tag_Processor( $script_tag );
// If for some reason the script tag isn't valid, bail.
if ( ! $processor->next_tag() ) {
return false;
}
return $processor->get_attribute( 'type' );
}
public function __isset( $key ) {
return isset( $this->old_scripts->$key );
}
public function __unset( $key ) {
unset( $this->old_scripts->$key );
}
public function &__get( $key ) {
return $this->old_scripts->$key;
}
public function __set( $key, $value ) {
$this->old_scripts->$key = $value;
}
}