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<?php |
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/** |
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* JS Optimizer |
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* Credits: https://github.com/Automattic/nginx-http-concat/blob/master/jsconcat.php |
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* |
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* @package PoweredCache\Optimizer |
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*/ |
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|
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namespace PoweredCache\Optimizer; |
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|
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use \WP_Scripts as WP_Scripts; |
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|
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//phpcs:disable Squiz.Commenting.VariableComment.Missing |
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//phpcs:disable Generic.Commenting.DocComment.MissingShort |
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//phpcs:disable Squiz.Commenting.FunctionComment.MissingParamName |
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//phpcs:disable Squiz.Commenting.FunctionComment.MissingParamTag |
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//phpcs:disable Squiz.Commenting.FunctionComment.MissingParamComment |
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|
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|
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/** |
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* Class JS |
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*/ |
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class JS extends WP_Scripts { |
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private $old_scripts; |
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public $allow_gzip_compression; |
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public $do_minify; |
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public $excluded_files = []; |
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|
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/** |
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* JS constructor. |
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* |
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* @param object $scripts \WP_Scripts |
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*/ |
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public function __construct( $scripts ) { |
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if ( empty( $scripts ) || ! ( $scripts instanceof WP_Scripts ) ) { |
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$this->old_scripts = new WP_Scripts(); |
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} else { |
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$this->old_scripts = $scripts; |
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} |
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|
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// Unset all the object properties except our private copy of the scripts object. |
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// We have to unset everything so that the overload methods talk to $this->old_scripts->whatever |
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// instead of $this->whatever. |
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foreach ( array_keys( get_object_vars( $this ) ) as $key ) { |
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if ( 'old_scripts' === $key ) { |
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continue; |
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} |
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unset( $this->$key ); |
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} |
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} |
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|
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/** |
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* Check given handle has inline JS |
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* |
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* @param string $handle JS handle |
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* |
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* @return bool |
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*/ |
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protected function has_inline_content( $handle ) { |
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$before_output = $this->get_data( $handle, 'before' ); |
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if ( ! empty( $before_output ) ) { |
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return true; |
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} |
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|
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$after_output = $this->get_data( $handle, 'after' ); |
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if ( ! empty( $after_output ) ) { |
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return true; |
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} |
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|
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// JavaScript translations |
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$has_translations = ! empty( $this->registered[ $handle ]->textdomain ); |
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if ( $has_translations ) { |
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return true; |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Prep items for concat |
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* |
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* @param bool $handles |
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* @param bool $group |
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* |
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* @return array|string[] |
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*/ |
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public function do_items( $handles = false, $group = false ) { |
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$abspath = wp_normalize_path( ABSPATH ); |
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$handles = false === $handles ? $this->queue : (array) $handles; |
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$javascripts = array(); |
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$siteurl = apply_filters( 'powered_cache_fo_site_url', $this->base_url ); |
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|
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$this->all_deps( $handles ); |
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$level = 0; |
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|
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foreach ( $this->to_do as $key => $handle ) { |
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if ( in_array( $handle, $this->done, true ) || ! isset( $this->registered[ $handle ] ) ) { |
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continue; |
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} |
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|
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if ( 0 === $group && $this->groups[ $handle ] > 0 ) { |
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$this->in_footer[] = $handle; |
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unset( $this->to_do[ $key ] ); |
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continue; |
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} |
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|
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if ( ! $this->registered[ $handle ]->src ) { // Defines a group. |
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// if there are localized items, echo them |
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$this->print_extra_script( $handle ); |
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$this->done[] = $handle; |
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continue; |
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} |
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|
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if ( false === $group && in_array( $handle, $this->in_footer, true ) ) { |
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$this->in_footer = array_diff( $this->in_footer, (array) $handle ); |
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} |
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|
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$obj = $this->registered[ $handle ]; |
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$js_url = $obj->src; |
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$js_url_parsed = wp_parse_url( $js_url ); |
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$extra = $obj->extra; |
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|
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// Don't concat by default |
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$do_concat = false; |
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|
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// Only try to concat static js files |
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if ( false !== strpos( $js_url_parsed['path'], '.js' ) ) { |
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$do_concat = true; |
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} |
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|
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// Don't try to concat externally hosted scripts |
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$is_internal_url = Helper::is_internal_url( $js_url, $siteurl ); |
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if ( ! $is_internal_url ) { |
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$do_concat = false; |
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} |
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|
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// Concat and canonicalize the paths only for |
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// existing scripts that aren't outside ABSPATH |
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|
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$js_realpath = Helper::realpath( $js_url, $siteurl ); |
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if ( ! $js_realpath || 0 !== strpos( $js_realpath, $abspath ) ) { |
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$do_concat = false; |
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} else { |
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$js_url_parsed['path'] = substr( $js_realpath, strlen( $abspath ) - 1 ); |
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} |
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|
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if ( $this->has_inline_content( $handle ) ) { |
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$do_concat = false; |
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} |
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|
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// Skip core scripts that use Strict Mode |
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if ( 'react' === $handle || 'react-dom' === $handle ) { |
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$do_concat = false; |
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} |
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|
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if ( Helper::is_excluded_js( $js_url ) ) { |
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$do_concat = false; |
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} |
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|
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/** |
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* Allow plugins to disable concatenation of certain scripts. |
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* |
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* @hook powered_cache_fo_js_do_concat |
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* |
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* @param {boolean} $do_concat Contact status. |
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* @param {string} $handle Handle of script. |
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* |
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* @return {boolean} New value. |
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* @since 2.0 |
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*/ |
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$do_concat = apply_filters( 'powered_cache_fo_js_do_concat', $do_concat, $handle ); |
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|
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if ( true === $do_concat ) { |
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if ( ! isset( $javascripts[ $level ] ) ) { |
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$javascripts[ $level ]['type'] = 'concat'; |
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} |
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|
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$javascripts[ $level ]['paths'][] = $js_url_parsed['path']; |
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$javascripts[ $level ]['handles'][] = $handle; |
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|
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} else { |
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$level ++; |
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$javascripts[ $level ]['type'] = 'do_item'; |
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$javascripts[ $level ]['handle'] = $handle; |
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$level ++; |
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} |
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unset( $this->to_do[ $key ] ); |
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} |
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|
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if ( empty( $javascripts ) ) { |
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return $this->done; |
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} |
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|
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foreach ( $javascripts as $js_array ) { |
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if ( 'do_item' === $js_array['type'] ) { |
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if ( $this->do_item( $js_array['handle'], $group ) ) { |
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$this->done[] = $js_array['handle']; |
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} |
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} elseif ( 'concat' === $js_array['type'] ) { |
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array_map( array( $this, 'print_extra_script' ), $js_array['handles'] ); |
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|
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if ( isset( $js_array['paths'] ) && count( $js_array['paths'] ) > 1 ) { |
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$paths = array_map( |
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function ( $url ) use ( $abspath ) { |
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return $abspath . $url; |
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}, |
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$js_array['paths'] |
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); |
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$mtime = max( array_map( 'filemtime', $paths ) ); |
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$path_str = implode( ',', $js_array['paths'] ) . "?m=${mtime}j"; |
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|
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if ( $this->allow_gzip_compression ) { |
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$path_64 = base64_encode( gzcompress( $path_str ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode |
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if ( strlen( $path_str ) > ( strlen( $path_64 ) + 1 ) ) { |
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$path_str = '-' . $path_64; |
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} |
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} |
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|
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$href = Helper::get_optimized_url( $path_str, $this->do_minify ); |
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} elseif ( isset( $js_array['paths'] ) && is_array( $js_array['paths'] ) ) { |
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$href = $this->cache_bust_mtime( $siteurl . $js_array['paths'][0], $siteurl ); |
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} |
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|
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$this->done = array_merge( $this->done, $js_array['handles'] ); |
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|
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// Print before/after scripts from wp_inline_scripts() and concatenated script tag |
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if ( isset( $js_array['extras']['before'] ) ) { |
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foreach ( $js_array['extras']['before'] as $inline_before ) { |
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echo $inline_before; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
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} |
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} |
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if ( isset( $href ) ) { |
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/** |
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* Filters combined script loader tags. |
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* |
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* @hook powered_cache_fo_script_loader_tag |
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* |
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* @param {string} $js_tag JS tag. |
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* |
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* @return {string} New value. |
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* @since 2.0 |
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*/ |
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echo apply_filters( 'powered_cache_fo_script_loader_tag', "<script type='text/javascript' src='$href'></script>", $href ); // phpcs:ignore |
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echo PHP_EOL; |
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} |
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if ( isset( $js_array['extras']['after'] ) ) { |
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foreach ( $js_array['extras']['after'] as $inline_after ) { |
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echo $inline_after; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
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} |
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} |
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} |
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} |
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|
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/** |
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* Fires after combine JS |
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* |
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* @hook powered_cache_fo_js_concat_did_items |
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* |
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* @param {array} $javascripts JS resources. |
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* |
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* @since 2.0 |
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*/ |
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do_action( 'powered_cache_fo_js_concat_did_items', $javascripts ); |
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|
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return $this->done; |
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} |
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|
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/** |
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* Bust cache |
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* |
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* @param string $url URL |
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* @param string $siteurl Site URL |
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* |
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* @return string |
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*/ |
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public function cache_bust_mtime( $url, $siteurl ) { |
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if ( strpos( $url, '?m=' ) ) { |
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return $url; |
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} |
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|
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$parts = wp_parse_url( $url ); |
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if ( ! isset( $parts['path'] ) || empty( $parts['path'] ) ) { |
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return $url; |
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} |
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|
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$file = Helper::realpath( $url, $siteurl ); |
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|
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$mtime = false; |
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if ( file_exists( $file ) ) { |
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$mtime = filemtime( $file ); |
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} |
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|
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if ( ! $mtime ) { |
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return $url; |
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} |
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|
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if ( false === strpos( $url, '?' ) ) { |
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$q = ''; |
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} else { |
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list( $url, $q ) = explode( '?', $url, 2 ); |
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if ( strlen( $q ) ) { |
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$q = '&' . $q; |
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} |
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} |
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|
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return "$url?m={$mtime}g{$q}"; |
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} |
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|
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/** |
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* @param $key |
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* |
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* @return bool |
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*/ |
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public function __isset( $key ) { |
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return isset( $this->old_scripts->$key ); |
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} |
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|
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/** |
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* @param $key |
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*/ |
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public function __unset( $key ) { |
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unset( $this->old_scripts->$key ); |
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} |
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|
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/** |
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* @param $key |
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* |
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* @return mixed |
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*/ |
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public function &__get( $key ) { |
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return $this->old_scripts->$key; |
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} |
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|
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/** |
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* @param $key |
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* @param $value |
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*/ |
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public function __set( $key, $value ) { |
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$this->old_scripts->$key = $value; |
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} |
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} |
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|
