max_header_size = 1024 * 4;
$this->header_size_accumulator = 0;
$this->options = get_option( awpp_get_instance()->Settings->settings_option );
$this->serverpush_scan_action = 'awpp_scan_htaccess_push';
$this->serverpush_possfiles_option = 'awpp_serverpush_possible_files';
}
public function run() {
add_action( 'wp_ajax_' . $this->serverpush_scan_action, [ $this, 'ajax_get_frontpage_files' ] );
add_action( 'update_option_' . awpp_get_instance()->Settings->settings_option, [ $this, 'add_serverpush_htaccess_onoption' ], 100, 2 );
if ( 'php' == $this->options['serverpush'] && ! is_admin() ) {
add_action( 'init', [ $this, 'ob_start' ] );
add_filter( 'script_loader_src', [ $this, 'link_preload_header' ], 99, 1 );
add_filter( 'style_loader_src', [ $this, 'link_preload_header' ], 99, 1 );
if ( $this->should_render_prefetch_headers() ) {
add_action( 'wp_head', [ $this, 'resource_hints' ], 99, 1 );
}
}
}
public function ajax_get_frontpage_files() {
$add = $this->scan_frontpage_files();
awpp_exit_ajax( 'success', 'test', $add );
}
public function add_serverpush_htaccess_onoption( $oldvalue, $newvalue ) {
$this->add_serverpush_htaccess( $newvalue );
}
public function ob_start() {
ob_start();
}
public function link_preload_header( $src ) {
if ( strpos( $src, home_url() ) !== false ) {
$preload_src = apply_filters( 'awpp_link_preload_src', $src );
if ( ! empty( $preload_src ) ) {
$header = sprintf( 'Link: <%s>; rel=preload; as=%s', esc_url( $this->link_url_to_relative_path( $preload_src ) ), sanitize_html_class( $this->link_resource_hint_as( current_filter() ) ) );
if ( ( $this->header_size_accumulator + strlen( $header ) ) < $this->max_header_size ) {
$this->header_size_accumulator += strlen( $header );
header( $header, false );
}
$GLOBALS[ 'awpp_' . $this->link_resource_hint_as( current_filter() ) . '_srcs' ][] = $this->link_url_to_relative_path( $preload_src );
}
}
return $src;
}
public function resource_hints() {
$resource_types = array( 'script', 'style' );
array_walk( $resource_types, function ( $resource_type ) {
$resources = $this->get_resources( $GLOBALS, $resource_type );
array_walk( $resources, function ( $src ) use ( $resource_type ) {
printf( '', esc_url( $src ), esc_html( $resource_type ) );
} );
} );
}
/**
* PHP Helpers
*/
public function get_resources( $globals = null, $resource_type ) {
$globals = ( null === $globals ) ? $GLOBALS : $globals;
$resource_type_key = "awpp_{$resource_type}_srcs";
if ( ! ( is_array( $globals ) && isset( $globals[ $resource_type_key ] ) ) ) {
return array();
} elseif ( ! is_array( $globals[ $resource_type_key ] ) ) {
return array( $globals[ $resource_type_key ] );
} else {
return $globals[ $resource_type_key ];
}
}
public function link_url_to_relative_path( $src ) {
return '//' === substr( $src, 0, 2 ) ? preg_replace( '/^\/\/([^\/]*)\//', '/', $src ) : preg_replace( '/^http(s)?:\/\/[^\/]*/', '', $src );
}
public function should_render_prefetch_headers() {
return apply_filters( 'awpp_render_resource_hints', ! function_exists( 'wp_resource_hints' ) );
}
public function link_resource_hint_as( $current_hook ) {
return 'style_loader_src' === $current_hook ? 'style' : 'script';
}
/**
* Server Push Helpers
*/
public function scan_frontpage_files() {
$return = [];
$file = file_get_contents( get_home_url() );
//echo $file;
//awpp_exit_ajax( 'error', $file );
$attr_regex = '/([a-zA-Z0-9-]+)="([^"]+)"/';
$styles_regex = '//';
$scripts_regex = '/