­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ licensing->was_licensed() ) { // respond to a request to print out the active CSS snippets. if ( isset( $_GET['code-snippets-css'] ) ) { $this->print_code( 'css' ); exit; } // respond to a request to print the active JavaScript snippets. if ( isset( $_GET['code-snippets-js-snippets'] ) && ! is_admin() ) { $this->print_code( 'js' ); exit; } add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_js' ), 15 ); add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_css' ), 15 ); add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_css' ), 15 ); } } /** * Fetch active snippets for a given scope, and cache the data in this class. * * @param string|string[] $scope Snippet scope. * * @return array[][] */ protected function fetch_active_snippets( $scope ) { $scope_key = is_array( $scope ) ? implode( '|', $scope ) : $scope; if ( ! isset( $this->active_snippets[ $scope_key ] ) ) { $this->active_snippets[ $scope_key ] = code_snippets()->db->fetch_active_snippets( $scope ); } return $this->active_snippets[ $scope_key ]; } /** * Increment the asset revision for a specified snippet. * * @param Snippet $snippet Recently updated snippet. * * @return void */ public function increment_snippet_rev( Snippet $snippet ) { if ( 'css' === $snippet->type || 'js' === $snippet->type ) { $this->increment_rev( $snippet->scope, $snippet->network && ! $snippet->shared_network ); } } /** * Increment the asset revision for multiple specified snippet. * * @param bool $network Whether to increase for the whole network or the current site. * * @return void */ public function increment_snippets_rev( bool $network ) { $this->increment_rev( 'all', $network ); } /** * Increment the asset revision for a specified scope * * @param string $scope Name of snippet scope. * @param bool $network Whether to increase for the whole network or the current site. */ public function increment_rev( string $scope, bool $network ) { if ( $network && ! is_multisite() ) { return; } $revisions = Settings\get_self_option( $network, 'code_snippets_assets_rev', array() ); if ( 'all' === $scope ) { foreach ( $revisions as $i => $v ) { ++$revisions[ $i ]; } } else { if ( ! isset( $revisions[ $scope ] ) ) { $revisions[ $scope ] = 0; } ++$revisions[ $scope ]; } Settings\update_self_option( $network, 'code_snippets_assets_rev', $revisions ); } /** * Retrieve the current asset revision number * * @param string $scope Name of snippet scope. * * @return int Current asset revision number. */ public function get_rev( string $scope ) { $rev = 0; $scope_snippets = $this->fetch_active_snippets( $scope ); if ( empty( $scope_snippets ) ) { return false; } $revisions = get_option( 'code_snippets_assets_rev' ); $rev += isset( $revisions[ $scope ] ) ? intval( $revisions[ $scope ] ) : 0; if ( is_multisite() ) { $ms_revisions = get_site_option( 'code_snippets_assets_rev' ); $rev += isset( $ms_revisions[ $scope ] ) ? intval( $ms_revisions[ $scope ] ) : 0; } return $rev; } /** * Retrieve the URL to a generated scope asset. * * @param string $scope Name of the scope to retrieve the asset for. * @param bool $latest_rev Whether to ensure that the URL is to the latest revision of the asset. * * @return string URL to asset. */ public function get_asset_url( string $scope, bool $latest_rev = false ): string { $base = 'admin-css' === $scope ? self_admin_url( '/' ) : home_url( '/' ); if ( '-css' === substr( $scope, -4 ) ) { $url = add_query_arg( 'code-snippets-css', 1, $base ); } elseif ( '-js' === substr( $scope, -3 ) ) { $key = 'site-head-js' === $scope ? 'head' : 'footer'; $url = add_query_arg( 'code-snippets-js-snippets', $key, $base ); } else { return ''; } if ( $latest_rev ) { $rev = $this->get_rev( $scope ); $url = $rev ? add_query_arg( 'ver', $rev, $url ) : $url; } return $url; } /** * Enqueue the active style snippets for the current page */ public function enqueue_css() { $scope = is_admin() ? 'admin' : 'site'; $rev = $this->get_rev( "$scope-css" ); if ( ! $rev ) { return; } $url = $this->get_asset_url( "$scope-css" ); wp_enqueue_style( "code-snippets-$scope-styles", $url, array(), $rev ); } /** * Enqueue the active javascript snippets for the current page */ public function enqueue_js() { $head_rev = $this->get_rev( 'site-head-js' ); $footer_rev = $this->get_rev( 'site-footer-js' ); if ( $head_rev ) { wp_enqueue_script( 'code-snippets-site-head', $this->get_asset_url( 'site-head-js' ), array(), $head_rev, false ); } if ( $footer_rev ) { wp_enqueue_script( 'code-snippets-site-footer', $this->get_asset_url( 'site-footer-js' ), array(), $footer_rev, true ); } } /** * Set the necessary headers to mark this page as an asset * * @param string $mime_type File MIME type used to set Content-Type header. */ private static function do_asset_headers( string $mime_type ) { $expiry = 365 * 24 * 60 * 60; // year in seconds. header( 'Content-Type: ' . $mime_type, true, 200 ); header( sprintf( 'Expires: %s GMT', gmdate( 'D, d M Y H:i:s', time() + $expiry ) ) ); } /** * Fetch and print the active snippets for a given type and the current scope. * * @param string $type Must be either 'css' or 'js'. */ private function print_code( string $type ) { if ( 'js' !== $type && 'css' !== $type ) { return; } if ( 'css' === $type ) { $this->do_asset_headers( 'text/css' ); $current_scope = is_admin() ? 'admin-css' : 'site-css'; } else { $this->do_asset_headers( 'text/javascript' ); $current_scope = isset( $_GET['code-snippets-js-snippets'] ) && 'footer' === $_GET['code-snippets-js-snippets'] ? 'footer' : 'head'; $current_scope = "site-$current_scope-js"; } $active_snippets = code_snippets()->db->fetch_active_snippets( $current_scope ); // Concatenate all fetched code together into a single string. $code = ''; foreach ( $active_snippets as $snippets ) { // phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped $code .= implode( "\n\n", array_column( $snippets, 'code' ) ); } // Minify the prepared code if the setting has been set. $setting = Settings\get_setting( 'general', 'minify_output' ); if ( is_array( $setting ) && in_array( $type, $setting, true ) ) { $minifier = 'css' === $type ? new Minify\CSS( $code ) : new Minify\JS( $code ); $code = $minifier->minify(); } // Output the code and exit. echo $code; exit; } /** * Print snippet code fetched from the database from a certain scope. * * @param string $scope Name of scope to print. */ private function print_content_snippets( string $scope ) { $snippets_list = $this->fetch_active_snippets( [ 'head-content', 'footer-content' ] ); foreach ( $snippets_list as $snippets ) { foreach ( $snippets as $snippet ) { if ( $scope === $snippet['scope'] ) { // phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped echo "\n", $snippet['code'], "\n"; } } } } /** * Print head content snippets. */ public function load_head_content() { $this->print_content_snippets( 'head-content' ); } /** * Print footer content snippets. */ public function load_footer_content() { $this->print_content_snippets( 'footer-content' ); } }