| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* Class Optml_Manager. Adds hooks for processing tags and urls. |
| 5 |
* |
| 6 |
* @package \Optml\Inc |
| 7 |
* @author Optimole <friends@optimole.com> |
| 8 |
*/ |
| 9 |
final class Optml_Manager { |
| 10 |
/** |
| 11 |
* Holds allowed compatibilities objects. |
| 12 |
* |
| 13 |
* @var Optml_compatibility[] Compatibilities objects. |
| 14 |
*/ |
| 15 |
public static $loaded_compatibilities = []; |
| 16 |
/** |
| 17 |
* Cached object instance. |
| 18 |
* |
| 19 |
* @var Optml_Manager |
| 20 |
*/ |
| 21 |
protected static $instance = null; |
| 22 |
/** |
| 23 |
* Holds the url replacer class. |
| 24 |
* |
| 25 |
* @access public |
| 26 |
* @since 1.0.0 |
| 27 |
* @var Optml_Url_Replacer Replacer instance. |
| 28 |
*/ |
| 29 |
public $url_replacer; |
| 30 |
/** |
| 31 |
* Holds the tag replacer class. |
| 32 |
* |
| 33 |
* @access public |
| 34 |
* @since 1.0.0 |
| 35 |
* @var Optml_Tag_Replacer Replacer instance. |
| 36 |
*/ |
| 37 |
public $tag_replacer; |
| 38 |
/** |
| 39 |
* Holds the lazyload replacer class. |
| 40 |
* |
| 41 |
* @access public |
| 42 |
* @since 1.0.0 |
| 43 |
* @var Optml_Lazyload_Replacer Replacer instance. |
| 44 |
*/ |
| 45 |
public $lazyload_replacer; |
| 46 |
/** |
| 47 |
* Holds plugin settings. |
| 48 |
* |
| 49 |
* @var Optml_Settings WordPress settings. |
| 50 |
*/ |
| 51 |
protected $settings; |
| 52 |
/** |
| 53 |
* Possible integrations with different plugins. |
| 54 |
* |
| 55 |
* @var array Integrations classes. |
| 56 |
*/ |
| 57 |
private $possible_compatibilities = array( |
| 58 |
'shortcode_ultimate', |
| 59 |
'foogallery', |
| 60 |
'envira', |
| 61 |
'beaver_builder', |
| 62 |
'jet_elements', |
| 63 |
'revslider', |
| 64 |
'metaslider', |
| 65 |
'essential_grid', |
| 66 |
'yith_quick_view', |
| 67 |
'cache_enabler', |
| 68 |
'elementor_builder', |
| 69 |
'divi_builder', |
| 70 |
'thrive', |
| 71 |
'master_slider', |
| 72 |
'pinterest', |
| 73 |
'sg_optimizer', |
| 74 |
'wp_fastest_cache', |
| 75 |
'swift_performance', |
| 76 |
'w3_total_cache', |
| 77 |
'translate_press', |
| 78 |
'give_wp', |
| 79 |
); |
| 80 |
/** |
| 81 |
* The current state of the buffer. |
| 82 |
* |
| 83 |
* @var boolean Buffer state. |
| 84 |
*/ |
| 85 |
private static $ob_started = false; |
| 86 |
|
| 87 |
/** |
| 88 |
* Class instance method. |
| 89 |
* |
| 90 |
* @codeCoverageIgnore |
| 91 |
* @static |
| 92 |
* @return Optml_Manager |
| 93 |
* @since 1.0.0 |
| 94 |
* @access public |
| 95 |
*/ |
| 96 |
public static function instance() { |
| 97 |
if ( null === self::$instance ) { |
| 98 |
self::$instance = new self(); |
| 99 |
self::$instance->url_replacer = Optml_Url_Replacer::instance(); |
| 100 |
self::$instance->tag_replacer = Optml_Tag_Replacer::instance(); |
| 101 |
self::$instance->lazyload_replacer = Optml_Lazyload_Replacer::instance(); |
| 102 |
add_action( 'after_setup_theme', array( self::$instance, 'init' ) ); |
| 103 |
} |
| 104 |
|
| 105 |
return self::$instance; |
| 106 |
} |
| 107 |
|
| 108 |
/** |
| 109 |
* The initialize method. |
| 110 |
*/ |
| 111 |
public function init() { |
| 112 |
|
| 113 |
$this->settings = new Optml_Settings(); |
| 114 |
|
| 115 |
foreach ( $this->possible_compatibilities as $compatibility_class ) { |
| 116 |
$compatibility_class = 'Optml_' . $compatibility_class; |
| 117 |
$compatibility = new $compatibility_class; |
| 118 |
|
| 119 |
/** |
| 120 |
* Check if we should load compatibility. |
| 121 |
* |
| 122 |
* @var Optml_compatibility $compatibility Class to register. |
| 123 |
*/ |
| 124 |
if ( $compatibility->should_load() ) { |
| 125 |
self::$loaded_compatibilities[ $compatibility_class ] = $compatibility; |
| 126 |
} |
| 127 |
} |
| 128 |
|
| 129 |
if ( ! $this->should_replace() ) { |
| 130 |
return; |
| 131 |
} |
| 132 |
$this->register_hooks(); |
| 133 |
} |
| 134 |
|
| 135 |
/** |
| 136 |
* Check if we should rewrite the urls. |
| 137 |
* |
| 138 |
* @return bool If we can replace the image. |
| 139 |
*/ |
| 140 |
public function should_replace() { |
| 141 |
|
| 142 |
if ( apply_filters( 'optml_should_replace_page', false ) ) { |
| 143 |
return false; |
| 144 |
} |
| 145 |
|
| 146 |
if ( ( is_admin() && ! self::is_ajax_request() ) || ! $this->settings->is_connected() || ! $this->settings->is_enabled() || is_customize_preview() ) { |
| 147 |
return false; // @codeCoverageIgnore |
| 148 |
} |
| 149 |
if ( array_key_exists( 'preview', $_GET ) && ! empty( $_GET['preview'] ) ) { |
| 150 |
return false; // @codeCoverageIgnore |
| 151 |
} |
| 152 |
|
| 153 |
if ( array_key_exists( 'optml_off', $_GET ) && 'true' == $_GET['optml_off'] ) { |
| 154 |
return false; // @codeCoverageIgnore |
| 155 |
} |
| 156 |
if ( array_key_exists( 'elementor-preview', $_GET ) && ! empty( $_GET['elementor-preview'] ) ) { |
| 157 |
return false; // @codeCoverageIgnore |
| 158 |
} |
| 159 |
if ( array_key_exists( 'ct_builder', $_GET ) && ! empty( $_GET['ct_builder'] ) ) { |
| 160 |
return false; // @codeCoverageIgnore |
| 161 |
} |
| 162 |
if ( array_key_exists( 'et_fb', $_GET ) && ! empty( $_GET['et_fb'] ) ) { |
| 163 |
return false; // @codeCoverageIgnore |
| 164 |
} |
| 165 |
if ( array_key_exists( 'tve', $_GET ) && $_GET['tve'] == 'true' ) { |
| 166 |
return false; // @codeCoverageIgnore |
| 167 |
} |
| 168 |
if ( array_key_exists( 'trp-edit-translation', $_GET ) && ( $_GET['trp-edit-translation'] == 'true' || $_GET['trp-edit-translation'] == 'preview' ) ) { |
| 169 |
return false; // @codeCoverageIgnore |
| 170 |
} |
| 171 |
if ( array_key_exists( 'context', $_GET ) && $_GET['context'] == 'edit' ) { |
| 172 |
return false; // @codeCoverageIgnore |
| 173 |
} |
| 174 |
if ( array_key_exists( 'fb-edit', $_GET ) && ! empty( $_GET['fb-edit'] ) ) { |
| 175 |
return false; // @codeCoverageIgnore |
| 176 |
} |
| 177 |
/** |
| 178 |
* Disable replacement on POST request and when user is logged in, but allows for sample image call widget in dashboard |
| 179 |
*/ |
| 180 |
if ( |
| 181 |
isset( $_SERVER['REQUEST_METHOD'] ) && |
| 182 |
$_SERVER['REQUEST_METHOD'] === 'POST' && |
| 183 |
is_user_logged_in() |
| 184 |
&& ( ! isset( $_GET['quality'] ) || ! current_user_can( 'manage_options' ) ) |
| 185 |
) { |
| 186 |
return false; // @codeCoverageIgnore |
| 187 |
} |
| 188 |
if ( class_exists( 'FLBuilderModel', false ) ) { |
| 189 |
$post_data = FLBuilderModel::get_post_data(); |
| 190 |
if ( isset( $_GET['fl_builder'] ) || isset( $post_data['fl_builder'] ) ) { |
| 191 |
return false; |
| 192 |
} |
| 193 |
} |
| 194 |
|
| 195 |
return Optml_Filters::should_do_page( $this->settings->get_filters()[ Optml_Settings::FILTER_TYPE_OPTIMIZE ][ Optml_Settings::FILTER_URL ] ); |
| 196 |
} |
| 197 |
|
| 198 |
/** |
| 199 |
* Check if we are in a ajax contex where we should enable replacement. |
| 200 |
* |
| 201 |
* @return bool Is ajax request? |
| 202 |
*/ |
| 203 |
public static function is_ajax_request() { |
| 204 |
if ( apply_filters( 'optml_force_replacement_on', false ) === true ) { |
| 205 |
|
| 206 |
return true; |
| 207 |
} |
| 208 |
if ( ! function_exists( 'is_user_logged_in' ) ) { |
| 209 |
return false; |
| 210 |
} |
| 211 |
// Disable for logged in users to avoid unexpected results. |
| 212 |
if ( is_user_logged_in() ) { |
| 213 |
return false; |
| 214 |
} |
| 215 |
|
| 216 |
if ( ! function_exists( 'wp_doing_ajax' ) ) { |
| 217 |
return false; |
| 218 |
} |
| 219 |
if ( ! wp_doing_ajax() ) { |
| 220 |
return false; |
| 221 |
} |
| 222 |
if ( isset( $_REQUEST['action'] ) && strpos( $_REQUEST['action'], 'wpmdb' ) !== false ) { |
| 223 |
return false; |
| 224 |
} |
| 225 |
|
| 226 |
return true; |
| 227 |
} |
| 228 |
|
| 229 |
/** |
| 230 |
* Register frontend replacer hooks. |
| 231 |
*/ |
| 232 |
public function register_hooks() { |
| 233 |
|
| 234 |
do_action( 'optml_replacer_setup' ); |
| 235 |
if ( $this->settings->get( 'native_lazyload' ) === 'disabled' ) { |
| 236 |
add_filter( 'wp_lazy_loading_enabled', '__return_false' ); |
| 237 |
} |
| 238 |
add_filter( 'the_content', array( $this, 'process_images_from_content' ), PHP_INT_MAX ); |
| 239 |
/** |
| 240 |
* When we have to process cdn images, i.e MIRROR is defined, |
| 241 |
* we need this as late as possible for other replacers to occur. |
| 242 |
* Otherwise, we can hook first to avoid any other plugins to take care of replacement. |
| 243 |
*/ |
| 244 |
add_action( |
| 245 |
self::is_ajax_request() ? 'init' : 'template_redirect', |
| 246 |
array( |
| 247 |
$this, |
| 248 |
'process_template_redirect_content', |
| 249 |
), |
| 250 |
defined( 'OPTML_SITE_MIRROR' ) ? PHP_INT_MAX : PHP_INT_MIN |
| 251 |
); |
| 252 |
add_action( 'template_redirect', array( $this, 'register_after_setup' ) ); |
| 253 |
add_action( 'rest_api_init', array( $this, 'process_template_redirect_content' ), PHP_INT_MIN ); |
| 254 |
|
| 255 |
add_action( 'get_post_metadata', array( $this, 'replace_meta' ), PHP_INT_MAX, 4 ); |
| 256 |
|
| 257 |
foreach ( self::$loaded_compatibilities as $registered_compatibility ) { |
| 258 |
$registered_compatibility->register(); |
| 259 |
} |
| 260 |
} |
| 261 |
|
| 262 |
/** |
| 263 |
* Run after Optimole is fully setup. |
| 264 |
*/ |
| 265 |
public function register_after_setup() { |
| 266 |
do_action( 'optml_after_setup' ); |
| 267 |
} |
| 268 |
|
| 269 |
/** |
| 270 |
* Replace urls in post meta values. |
| 271 |
* |
| 272 |
* @param mixed $metadata Metadata. |
| 273 |
* @param int $object_id Post id. |
| 274 |
* @param string $meta_key Meta key. |
| 275 |
* @param bool $single Is single. |
| 276 |
* |
| 277 |
* @return mixed Altered meta. |
| 278 |
*/ |
| 279 |
public function replace_meta( $metadata, $object_id, $meta_key, $single ) { |
| 280 |
|
| 281 |
$meta_needed = '_elementor_data'; |
| 282 |
|
| 283 |
if ( isset( $meta_key ) && $meta_needed == $meta_key ) { |
| 284 |
remove_filter( 'get_post_metadata', array( $this, 'replace_meta' ), PHP_INT_MAX ); |
| 285 |
|
| 286 |
$current_meta = get_post_meta( $object_id, $meta_needed, $single ); |
| 287 |
add_filter( 'get_post_metadata', array( $this, 'replace_meta' ), PHP_INT_MAX, 4 ); |
| 288 |
|
| 289 |
if ( ! is_string( $current_meta ) ) { |
| 290 |
return $metadata; |
| 291 |
} |
| 292 |
|
| 293 |
return $this->replace_content( $current_meta ); |
| 294 |
} |
| 295 |
|
| 296 |
// Return original if the check does not pass |
| 297 |
return $metadata; |
| 298 |
} |
| 299 |
|
| 300 |
/** |
| 301 |
* Filter raw HTML content for urls. |
| 302 |
* |
| 303 |
* @param string $html HTML to filter. |
| 304 |
* |
| 305 |
* @return mixed Filtered content. |
| 306 |
*/ |
| 307 |
public function replace_content( $html ) { |
| 308 |
|
| 309 |
if ( defined( 'REST_REQUEST' ) && REST_REQUEST && is_user_logged_in() ) { |
| 310 |
return $html; |
| 311 |
} |
| 312 |
|
| 313 |
$html = $this->process_images_from_content( $html ); |
| 314 |
|
| 315 |
if ( $this->settings->get( 'video_lazyload' ) === 'enabled' ) { |
| 316 |
$html = apply_filters( 'optml_video_replace', $html ); |
| 317 |
} |
| 318 |
|
| 319 |
$html = $this->process_urls_from_content( $html ); |
| 320 |
|
| 321 |
return $html; |
| 322 |
} |
| 323 |
|
| 324 |
/** |
| 325 |
* Adds a filter with detected images tags and the content. |
| 326 |
* |
| 327 |
* @param string $content The HTML content. |
| 328 |
* |
| 329 |
* @return mixed |
| 330 |
*/ |
| 331 |
public function process_images_from_content( $content ) { |
| 332 |
if ( self::should_ignore_image_tags() ) { |
| 333 |
return $content; |
| 334 |
} |
| 335 |
$images = self::parse_images_from_html( $content ); |
| 336 |
if ( empty( $images ) ) { |
| 337 |
return $content; |
| 338 |
} |
| 339 |
|
| 340 |
return apply_filters( 'optml_content_images_tags', $content, $images ); |
| 341 |
} |
| 342 |
|
| 343 |
/** |
| 344 |
* Check if we are on a amp endpoint. |
| 345 |
* |
| 346 |
* IMPORTANT: This needs to be used after parse_query hook, otherwise will return false positives. |
| 347 |
* |
| 348 |
* @return bool |
| 349 |
*/ |
| 350 |
public static function should_ignore_image_tags() { |
| 351 |
// Ignore image tags replacement in amp context as they are not available. |
| 352 |
if ( function_exists( 'is_amp_endpoint' ) ) { |
| 353 |
return is_amp_endpoint(); |
| 354 |
} |
| 355 |
if ( function_exists( 'ampforwp_is_amp_endpoint' ) ) { |
| 356 |
return ampforwp_is_amp_endpoint(); |
| 357 |
} |
| 358 |
|
| 359 |
// Ignore image tag replacement in feed context as we don't need it. |
| 360 |
if ( is_feed() ) { |
| 361 |
return true; |
| 362 |
} |
| 363 |
|
| 364 |
return apply_filters( 'optml_should_ignore_image_tags', false ) === true; |
| 365 |
} |
| 366 |
|
| 367 |
/** |
| 368 |
* Match all images and any relevant <a> tags in a block of HTML. |
| 369 |
* |
| 370 |
* @param string $content Some HTML. |
| 371 |
* |
| 372 |
* @return array An array of $images matches, where $images[0] is |
| 373 |
* an array of full matches, and the link_url, img_tag, |
| 374 |
* and img_url keys are arrays of those matches. |
| 375 |
*/ |
| 376 |
public static function parse_images_from_html( $content ) { |
| 377 |
$images = array(); |
| 378 |
|
| 379 |
$header_start = null; |
| 380 |
$header_end = null; |
| 381 |
|
| 382 |
if ( preg_match( '/<header.*<\/header>/ismU', $content, $matches, PREG_OFFSET_CAPTURE ) === 1 ) { |
| 383 |
$header_start = $matches[0][1]; |
| 384 |
$header_end = $header_start + strlen( $matches[0][0] ); |
| 385 |
} |
| 386 |
$regex = '/(?:<a[^>]+?href=["|\'](?P<link_url>[^\s]+?)["|\'][^>]*?>\s*)?(?P<img_tag>(?:<noscript\s*>\s*)?<img[^>]*?\s?(?:' . implode( '|', array_merge( [ 'src' ], Optml_Tag_Replacer::possible_src_attributes() ) ) . ')=["\'\\\\]*?(?P<img_url>[' . Optml_Config::$chars . ']{10,}).*?>(?:\s*<\/noscript\s*>)?){1}(?:\s*<\/a>)?/ismu'; |
| 387 |
|
| 388 |
if ( preg_match_all( $regex, $content, $images, PREG_OFFSET_CAPTURE ) ) { |
| 389 |
|
| 390 |
foreach ( $images as $key => $unused ) { |
| 391 |
// Simplify the output as much as possible, mostly for confirming test results. |
| 392 |
if ( is_numeric( $key ) && $key > 0 ) { |
| 393 |
unset( $images[ $key ] ); |
| 394 |
continue; |
| 395 |
} |
| 396 |
|
| 397 |
$is_no_script = false; |
| 398 |
foreach ( $unused as $url_key => $url_value ) { |
| 399 |
if ( $key === 'img_url' ) { |
| 400 |
$images[ $key ][ $url_key ] = rtrim( $url_value[0], '\\' ); |
| 401 |
continue; |
| 402 |
} |
| 403 |
$images[ $key ][ $url_key ] = $url_value[0]; |
| 404 |
|
| 405 |
if ( $key === 0 ) { |
| 406 |
$images['in_header'][ $url_key ] = $header_start !== null ? ( $url_value[1] > $header_start && $url_value[1] < $header_end ) : false; |
| 407 |
|
| 408 |
// Check if we are in the noscript context. |
| 409 |
if ( $is_no_script === false ) { |
| 410 |
$is_no_script = strpos( $images[0][ $url_key ], '<noscript' ) !== false ? true : false; |
| 411 |
} |
| 412 |
if ( $is_no_script ) { |
| 413 |
$images['in_header'][ $url_key ] = true; |
| 414 |
$is_no_script = strpos( $images[0][ $url_key ], '</noscript' ) !== false ? false : true; |
| 415 |
} |
| 416 |
} |
| 417 |
} |
| 418 |
} |
| 419 |
|
| 420 |
return $images; |
| 421 |
} |
| 422 |
|
| 423 |
return array(); |
| 424 |
} |
| 425 |
|
| 426 |
/** |
| 427 |
* Process url replacement from raw html strings. |
| 428 |
* |
| 429 |
* @param string $html Raw html. |
| 430 |
* |
| 431 |
* @return string Processed string. |
| 432 |
*/ |
| 433 |
public function process_urls_from_content( $html ) { |
| 434 |
$extracted_urls = $this->extract_urls_from_content( $html ); |
| 435 |
|
| 436 |
return $this->do_url_replacement( $html, $extracted_urls ); |
| 437 |
|
| 438 |
} |
| 439 |
|
| 440 |
/** |
| 441 |
* Method to extract assets from content. |
| 442 |
* |
| 443 |
* @param string $content The HTML content. |
| 444 |
* |
| 445 |
* @return array |
| 446 |
*/ |
| 447 |
public function extract_urls_from_content( $content ) { |
| 448 |
$extensions = array_keys( Optml_Config::$image_extensions ); |
| 449 |
if ( $this->settings->use_cdn() && ! self::should_ignore_image_tags() ) { |
| 450 |
$extensions = array_merge( $extensions, array_keys( Optml_Config::$assets_extensions ) ); |
| 451 |
} |
| 452 |
$regex = '/(?:[(|\s\';",=])((?:http|\/|\\\\){1}(?:[' . Optml_Config::$chars . ']{10,}\.(?:' . implode( '|', $extensions ) . ')))(?=(?:|\?|"|&|,|\s|\'|\)|\||\\\\|}))/Uu'; |
| 453 |
preg_match_all( |
| 454 |
$regex, |
| 455 |
$content, |
| 456 |
$urls |
| 457 |
); |
| 458 |
|
| 459 |
return $this->normalize_urls( $urls[1] ); |
| 460 |
} |
| 461 |
|
| 462 |
/** |
| 463 |
* Normalize extracted urls. |
| 464 |
* |
| 465 |
* @param array $urls Raw urls extracted. |
| 466 |
* |
| 467 |
* @return array Normalized array. |
| 468 |
*/ |
| 469 |
private function normalize_urls( $urls ) { |
| 470 |
|
| 471 |
$urls = array_map( |
| 472 |
function ( $value ) { |
| 473 |
$value = str_replace( '"', '', $value ); |
| 474 |
|
| 475 |
return rtrim( $value, '\\";\'' ); |
| 476 |
}, |
| 477 |
$urls |
| 478 |
); |
| 479 |
$urls = array_unique( $urls ); |
| 480 |
|
| 481 |
return array_values( $urls ); |
| 482 |
} |
| 483 |
|
| 484 |
/** |
| 485 |
* Process string content and replace possible urls. |
| 486 |
* |
| 487 |
* @param string $html String content. |
| 488 |
* @param array $extracted_urls Urls to check. |
| 489 |
* |
| 490 |
* @return string Processed html. |
| 491 |
*/ |
| 492 |
private function do_url_replacement( $html, $extracted_urls ) { |
| 493 |
$extracted_urls = apply_filters( 'optml_extracted_urls', $extracted_urls ); |
| 494 |
|
| 495 |
if ( empty( $extracted_urls ) ) { |
| 496 |
return $html; |
| 497 |
} |
| 498 |
$slashed_config = addcslashes( Optml_Config::$service_url, '/' ); |
| 499 |
|
| 500 |
$extracted_urls = array_filter( |
| 501 |
$extracted_urls, |
| 502 |
function ( $value ) use ( $slashed_config ) { |
| 503 |
return strpos( $value, Optml_Config::$service_url ) === false && strpos( $value, $slashed_config ) === false; |
| 504 |
} |
| 505 |
); |
| 506 |
$upload_resource = $this->tag_replacer->get_upload_resource(); |
| 507 |
$urls = array_combine( $extracted_urls, $extracted_urls ); |
| 508 |
|
| 509 |
$urls = array_map( |
| 510 |
function ( $url ) use ( $upload_resource ) { |
| 511 |
$is_slashed = strpos( $url, '\/' ) !== false; |
| 512 |
$is_relative = strpos( |
| 513 |
$url, |
| 514 |
$is_slashed ? |
| 515 |
addcslashes( $upload_resource['content_path'], '/' ) : |
| 516 |
$upload_resource['content_path'] |
| 517 |
) === 0; |
| 518 |
if ( $is_relative ) { |
| 519 |
$url = $upload_resource['content_host'] . $url; |
| 520 |
} |
| 521 |
|
| 522 |
return apply_filters( 'optml_content_url', $url ); |
| 523 |
}, |
| 524 |
$urls |
| 525 |
); |
| 526 |
|
| 527 |
foreach ( $urls as $origin => $replace ) { |
| 528 |
$html = preg_replace( '/(?<![\/|:|\\w])' . preg_quote( $origin, '/' ) . '/m', $replace, $html ); |
| 529 |
} |
| 530 |
|
| 531 |
return $html; |
| 532 |
} |
| 533 |
|
| 534 |
/** |
| 535 |
* Init html replacer handler. |
| 536 |
*/ |
| 537 |
public function process_template_redirect_content() { |
| 538 |
// Early exit if function was already called, we don't want duplicate ob_start |
| 539 |
if ( self::$ob_started === true ) { |
| 540 |
return; |
| 541 |
} |
| 542 |
self::$ob_started = true; |
| 543 |
// We no longer need this if the handler was started. |
| 544 |
remove_filter( 'the_content', array($this, 'process_images_from_content'), PHP_INT_MAX ); |
| 545 |
|
| 546 |
ob_start( |
| 547 |
array(&$this, 'replace_content') |
| 548 |
); |
| 549 |
} |
| 550 |
|
| 551 |
/** |
| 552 |
* Throw error on object clone |
| 553 |
* |
| 554 |
* The whole idea of the singleton design pattern is that there is a single |
| 555 |
* object therefore, we don't want the object to be cloned. |
| 556 |
* |
| 557 |
* @codeCoverageIgnore |
| 558 |
* @access public |
| 559 |
* @return void |
| 560 |
* @since 1.0.0 |
| 561 |
*/ |
| 562 |
public function __clone() { |
| 563 |
// Cloning instances of the class is forbidden. |
| 564 |
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' ); |
| 565 |
} |
| 566 |
|
| 567 |
/** |
| 568 |
* Disable unserializing of the class |
| 569 |
* |
| 570 |
* @codeCoverageIgnore |
| 571 |
* @access public |
| 572 |
* @return void |
| 573 |
* @since 1.0.0 |
| 574 |
*/ |
| 575 |
public function __wakeup() { |
| 576 |
// Unserializing instances of the class is forbidden. |
| 577 |
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' ); |
| 578 |
} |
| 579 |
} |
| 580 |
|
