| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* The class handles the img tag replacements. |
| 5 |
* |
| 6 |
* @package \Optml\Inc |
| 7 |
* @author Optimole <friends@optimole.com> |
| 8 |
*/ |
| 9 |
final class Optml_Tag_Replacer extends Optml_App_Replacer { |
| 10 |
use Optml_Normalizer; |
| 11 |
use Optml_Validator; |
| 12 |
|
| 13 |
/** |
| 14 |
* Cached object instance. |
| 15 |
* |
| 16 |
* @var Optml_Tag_Replacer |
| 17 |
*/ |
| 18 |
protected static $instance = null; |
| 19 |
|
| 20 |
/** |
| 21 |
* Class instance method. |
| 22 |
* |
| 23 |
* @codeCoverageIgnore |
| 24 |
* @static |
| 25 |
* @since 1.0.0 |
| 26 |
* @access public |
| 27 |
* @return Optml_Tag_Replacer |
| 28 |
*/ |
| 29 |
public static function instance() { |
| 30 |
if ( null === self::$instance ) { |
| 31 |
self::$instance = new self(); |
| 32 |
add_action( 'optml_replacer_setup', array( self::$instance, 'init' ) ); |
| 33 |
} |
| 34 |
|
| 35 |
return self::$instance; |
| 36 |
} |
| 37 |
|
| 38 |
/** |
| 39 |
* The initialize method. |
| 40 |
*/ |
| 41 |
public function init() { |
| 42 |
|
| 43 |
parent::init(); |
| 44 |
add_filter( 'optml_content_images_tags', array( $this, 'process_image_tags' ), 1, 2 ); |
| 45 |
|
| 46 |
if ( $this->settings->use_lazyload() ) { |
| 47 |
return; |
| 48 |
} |
| 49 |
|
| 50 |
add_filter( 'optml_tag_replace', array( $this, 'regular_tag_replace' ), 1, 6 ); |
| 51 |
add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), PHP_INT_MAX, 3 ); |
| 52 |
add_filter( 'wp_calculate_image_srcset', array( $this, 'filter_srcset_attr' ), PHP_INT_MAX, 5 ); |
| 53 |
add_filter( 'wp_calculate_image_sizes', array( $this, 'filter_sizes_attr' ), 1, 2 ); |
| 54 |
|
| 55 |
} |
| 56 |
/** |
| 57 |
* Called by hook to replace image tags in content. |
| 58 |
* |
| 59 |
* @param string $content The content to process. |
| 60 |
* @param array $images List of image tags. |
| 61 |
* |
| 62 |
* @return mixed |
| 63 |
*/ |
| 64 |
|
| 65 |
/** |
| 66 |
* Replace in given content the given image tags with video tags is image is gif |
| 67 |
* |
| 68 |
* @param string $image_url Image url to process. |
| 69 |
* @param string $image_tag The tag to replace. |
| 70 |
* @param string $content The content to process. |
| 71 |
* |
| 72 |
* @return bool |
| 73 |
*/ |
| 74 |
public function img_to_video( $image_url, $image_tag, &$content ) { |
| 75 |
if ( $this->settings->get( 'img_to_video' ) === 'disabled' ) { |
| 76 |
return false; |
| 77 |
} |
| 78 |
if ( ! $this->is_valid_gif( $image_url ) ) { |
| 79 |
return false; |
| 80 |
} |
| 81 |
$link_mp4 = apply_filters( |
| 82 |
'optml_content_url', |
| 83 |
$image_url, |
| 84 |
array('width' => 'auto', |
| 85 |
'height' => 'auto', |
| 86 |
'format' => 'mp4', |
| 87 |
) |
| 88 |
); |
| 89 |
|
| 90 |
$link_png = apply_filters( |
| 91 |
'optml_content_url', |
| 92 |
$image_url, |
| 93 |
array('width' => 'auto', |
| 94 |
'height' => 'auto', |
| 95 |
'quality' => 'eco', |
| 96 |
) |
| 97 |
); |
| 98 |
|
| 99 |
$video_tag = $image_tag; |
| 100 |
|
| 101 |
$video_tag = str_replace( |
| 102 |
[ |
| 103 |
'src=', |
| 104 |
'<img', |
| 105 |
'/>', |
| 106 |
], |
| 107 |
[ |
| 108 |
'original-src=', |
| 109 |
'<video autoplay muted loop playsinline poster="' . $link_png . '"', |
| 110 |
'><source src="' . $link_mp4 . '" type="video/mp4"></video>', |
| 111 |
], |
| 112 |
$video_tag |
| 113 |
); |
| 114 |
$content = str_replace( $image_tag, $video_tag, $content ); |
| 115 |
return true; |
| 116 |
} |
| 117 |
|
| 118 |
/** |
| 119 |
* Method invoked by `optml_content_images_tags` filter. |
| 120 |
* |
| 121 |
* @param string $content The content to be processed. |
| 122 |
* @param array $images A list of images. |
| 123 |
* |
| 124 |
* @return mixed |
| 125 |
*/ |
| 126 |
public function process_image_tags( $content, $images = array() ) { |
| 127 |
|
| 128 |
$image_sizes = self::image_sizes(); |
| 129 |
$sizes2crop = self::size_to_crop(); |
| 130 |
foreach ( $images[0] as $index => $tag ) { |
| 131 |
$width = $height = false; |
| 132 |
$crop = null; |
| 133 |
$image_tag = $images['img_tag'][ $index ]; |
| 134 |
|
| 135 |
$is_slashed = strpos( $images['img_url'][ $index ], '\/' ) !== false; |
| 136 |
|
| 137 |
$src = $tmp = $is_slashed ? $this->strip_slashes( $images['img_url'][ $index ] ) : $images['img_url'][ $index ]; |
| 138 |
|
| 139 |
if ( strpos( $src, $this->upload_resource['content_path'] ) === 0 ) { |
| 140 |
$src = $tmp = untrailingslashit( $this->upload_resource['content_host'] ) . $src; |
| 141 |
|
| 142 |
$new_src = $is_slashed ? addcslashes( $src, '/' ) : $src; |
| 143 |
$image_tag = str_replace( |
| 144 |
array( |
| 145 |
'"' . $images['img_url'][ $index ], |
| 146 |
"'" . $images['img_url'][ $index ], |
| 147 |
), |
| 148 |
array( |
| 149 |
'"' . $new_src, |
| 150 |
"'" . $new_src, |
| 151 |
), |
| 152 |
$image_tag |
| 153 |
); |
| 154 |
$images['img_url'][ $index ] = $new_src; |
| 155 |
} |
| 156 |
if ( apply_filters( 'optml_ignore_image_link', false, $src ) || |
| 157 |
false !== strpos( $src, Optml_Config::$service_url ) || |
| 158 |
! $this->can_replace_url( $src ) || |
| 159 |
! $this->can_replace_tag( $images['img_url'][ $index ], $tag ) |
| 160 |
) { |
| 161 |
|
| 162 |
continue; // @codeCoverageIgnore |
| 163 |
} |
| 164 |
|
| 165 |
if ( $this->img_to_video( $images['img_url'][ $index ], $images['img_tag'][ $index ], $content ) ) { |
| 166 |
continue; |
| 167 |
} |
| 168 |
|
| 169 |
$resize = apply_filters( 'optml_default_crop', array() ); |
| 170 |
|
| 171 |
list( $width, $height, $resize ) = self::parse_dimensions_from_tag( |
| 172 |
$images['img_tag'][ $index ], |
| 173 |
$image_sizes, |
| 174 |
array( |
| 175 |
'width' => $width, |
| 176 |
'height' => $height, |
| 177 |
'resize' => $resize, |
| 178 |
) |
| 179 |
); |
| 180 |
if ( false === $width && false === $height ) { |
| 181 |
list( $width, $height, $crop ) = $this->parse_dimensions_from_filename( $tmp ); |
| 182 |
} |
| 183 |
if ( empty( $resize ) && isset( $sizes2crop[ $width . $height ] ) ) { |
| 184 |
$resize = $this->to_optml_crop( $sizes2crop[ $width . $height ] ); |
| 185 |
} elseif ( $crop === true ) { |
| 186 |
$resize = $this->to_optml_crop( $crop ); |
| 187 |
} |
| 188 |
|
| 189 |
$optml_args = [ 'width' => $width, 'height' => $height, 'resize' => $resize ]; |
| 190 |
$tmp = $this->strip_image_size_from_url( $tmp ); |
| 191 |
$new_url = apply_filters( 'optml_content_url', $tmp, $optml_args ); |
| 192 |
|
| 193 |
if ( $new_url === $tmp ) { |
| 194 |
continue; // @codeCoverageIgnore |
| 195 |
} |
| 196 |
|
| 197 |
$image_tag = str_replace( |
| 198 |
[ |
| 199 |
'width="' . $width . '"', |
| 200 |
'width=\"' . $width . '\"', |
| 201 |
'height="' . $height . '"', |
| 202 |
'height=\"' . $height . '\"', |
| 203 |
], |
| 204 |
[ |
| 205 |
'width="' . $optml_args['width'] . '"', |
| 206 |
'width=\"' . $optml_args['width'] . '\"', |
| 207 |
'height="' . $optml_args['height'] . '"', |
| 208 |
'height=\"' . $optml_args['height'] . '\"', |
| 209 |
], |
| 210 |
$image_tag |
| 211 |
); |
| 212 |
|
| 213 |
// If the image is in header or has a class excluded from lazyload, we need to do the regular replace. |
| 214 |
if ( $images['in_header'][ $index ] ) { |
| 215 |
$image_tag = $this->regular_tag_replace( $image_tag, $images['img_url'][ $index ], $new_url, $optml_args, $is_slashed, $tag ); |
| 216 |
} else { |
| 217 |
$image_tag = apply_filters( 'optml_tag_replace', $image_tag, $images['img_url'][ $index ], $new_url, $optml_args, $is_slashed, $tag ); |
| 218 |
} |
| 219 |
|
| 220 |
$content = str_replace( $images['img_tag'][ $index ], $image_tag, $content ); |
| 221 |
} |
| 222 |
return $content; |
| 223 |
} |
| 224 |
/** |
| 225 |
* Check replacement is allowed for this tag. |
| 226 |
* |
| 227 |
* @param string $url Url. |
| 228 |
* @param string $tag Html tag. |
| 229 |
* |
| 230 |
* @return bool We can replace? |
| 231 |
*/ |
| 232 |
public function can_replace_tag( $url, $tag = '' ) { |
| 233 |
foreach ( self::possible_tag_flags() as $banned_string ) { |
| 234 |
if ( strpos( $tag, $banned_string ) !== false ) { |
| 235 |
self::$ignored_url_map[ crc32( $url ) ] = true; |
| 236 |
return false; |
| 237 |
} |
| 238 |
} |
| 239 |
return true; |
| 240 |
} |
| 241 |
|
| 242 |
/** |
| 243 |
* Extract image dimensions from img tag. |
| 244 |
* |
| 245 |
* @param string $tag The HTML img tag. |
| 246 |
* @param array $image_sizes WordPress supported image sizes. |
| 247 |
* @param array $args Default args to use. |
| 248 |
* |
| 249 |
* @return array |
| 250 |
*/ |
| 251 |
private function parse_dimensions_from_tag( $tag, $image_sizes, $args = array() ) { |
| 252 |
if ( preg_match( '#width=["|\']?([\d%]+)["|\']?#i', $tag, $width_string ) ) { |
| 253 |
$args['width'] = $width_string[1]; |
| 254 |
} |
| 255 |
if ( preg_match( '#height=["|\']?([\d%]+)["|\']?#i', $tag, $height_string ) ) { |
| 256 |
$args['height'] = $height_string[1]; |
| 257 |
} |
| 258 |
if ( preg_match( '#class=["|\']?[^"\']*size-([^"\'\s]+)[^"\']*["|\']?#i', $tag, $size ) ) { |
| 259 |
$size = array_pop( $size ); |
| 260 |
|
| 261 |
if ( false === $args['width'] && false === $args['height'] && 'full' != $size && array_key_exists( $size, $image_sizes ) ) { |
| 262 |
$args['width'] = (int) $image_sizes[ $size ]['width']; |
| 263 |
$args['height'] = (int) $image_sizes[ $size ]['height']; |
| 264 |
} |
| 265 |
if ( 'full' != $size && array_key_exists( $size, $image_sizes ) ) { |
| 266 |
$args['resize'] = $this->to_optml_crop( $image_sizes[ $size ]['crop'] ); |
| 267 |
} |
| 268 |
} else { |
| 269 |
$args['resize'] = apply_filters( 'optml_parse_resize_from_tag', [], $tag ); |
| 270 |
} |
| 271 |
|
| 272 |
return array( $args['width'], $args['height'], $args['resize'] ); |
| 273 |
} |
| 274 |
|
| 275 |
/** |
| 276 |
* Replaces the tags by default. |
| 277 |
* |
| 278 |
* @param string $new_tag The new tag. |
| 279 |
* @param string $original_url The original URL. |
| 280 |
* @param string $new_url The optimized URL. |
| 281 |
* @param array $optml_args Options passed for URL optimization. |
| 282 |
* @param bool $is_slashed Url needs to slashed. |
| 283 |
* @param string $full_tag Full tag, wrapper included. |
| 284 |
* |
| 285 |
* @return string |
| 286 |
*/ |
| 287 |
public function regular_tag_replace( $new_tag, $original_url, $new_url, $optml_args, $is_slashed = false, $full_tag = '' ) { |
| 288 |
$pattern = '/(?<!\/)' . preg_quote( $original_url, '/' ) . '/i'; |
| 289 |
$replace = $is_slashed ? addcslashes( $new_url, '/' ) : $new_url; |
| 290 |
return preg_replace( $pattern, $replace, $new_tag ); |
| 291 |
} |
| 292 |
|
| 293 |
/** |
| 294 |
* Replace image URLs in the srcset attributes and in case there is a resize in action, also replace the sizes. |
| 295 |
* |
| 296 |
* @param array $sources Array of image sources. |
| 297 |
* @param array $size_array Array of width and height values in pixels (in that order). |
| 298 |
* @param string $image_src The 'src' of the image. |
| 299 |
* @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. |
| 300 |
* @param int $attachment_id Image attachment ID. |
| 301 |
* |
| 302 |
* @return array |
| 303 |
*/ |
| 304 |
public function filter_srcset_attr( $sources = array(), $size_array = array(), $image_src = '', $image_meta = array(), $attachment_id = 0 ) { |
| 305 |
if ( ! is_array( $sources ) ) { |
| 306 |
return $sources; |
| 307 |
} |
| 308 |
|
| 309 |
$original_url = null; |
| 310 |
$cropping = null; |
| 311 |
if ( count( $size_array ) === 2 ) { |
| 312 |
$sizes = self::size_to_crop(); |
| 313 |
$cropping = isset( $sizes[ $size_array[0] . $size_array[1] ] ) ? $this->to_optml_crop( $sizes[ $size_array[0] . $size_array[1] ] ) : null; |
| 314 |
} |
| 315 |
|
| 316 |
foreach ( $sources as $i => $source ) { |
| 317 |
$url = $source['url']; |
| 318 |
list( $width, $height, $file_crop ) = $this->parse_dimensions_from_filename( $url ); |
| 319 |
|
| 320 |
if ( empty( $width ) ) { |
| 321 |
$width = $image_meta['width']; |
| 322 |
} |
| 323 |
|
| 324 |
if ( empty( $height ) ) { |
| 325 |
$height = $image_meta['height']; |
| 326 |
} |
| 327 |
|
| 328 |
if ( $original_url === null ) { |
| 329 |
if ( ! empty( $attachment_id ) ) { |
| 330 |
$original_url = wp_get_attachment_url( $attachment_id ); |
| 331 |
} else { |
| 332 |
$original_url = $this->strip_image_size_from_url( $source['url'] ); |
| 333 |
} |
| 334 |
} |
| 335 |
$args = array(); |
| 336 |
if ( 'w' === $source['descriptor'] ) { |
| 337 |
if ( $height && ( $source['value'] == $width ) ) { |
| 338 |
$args['width'] = $width; |
| 339 |
$args['height'] = $height; |
| 340 |
} else { |
| 341 |
$args['width'] = $source['value']; |
| 342 |
} |
| 343 |
} |
| 344 |
if ( $cropping !== null ) { |
| 345 |
$args['resize'] = $cropping; |
| 346 |
} else { |
| 347 |
$args['resize'] = $this->to_optml_crop( $file_crop ); |
| 348 |
} |
| 349 |
$sources[ $i ]['url'] = apply_filters( 'optml_content_url', $original_url, $args ); |
| 350 |
} |
| 351 |
|
| 352 |
return $sources; |
| 353 |
} |
| 354 |
|
| 355 |
/** |
| 356 |
* Filters sizes attribute of the images. |
| 357 |
* |
| 358 |
* @param array $sizes An array of media query breakpoints. |
| 359 |
* @param array $size Width and height of the image. |
| 360 |
* |
| 361 |
* @return mixed An array of media query breakpoints. |
| 362 |
*/ |
| 363 |
public function filter_sizes_attr( $sizes, $size ) { |
| 364 |
|
| 365 |
if ( ! doing_filter( 'the_content' ) ) { |
| 366 |
return $sizes; |
| 367 |
} |
| 368 |
|
| 369 |
$content_width = false; |
| 370 |
if ( isset( $GLOBALS['content_width'] ) ) { |
| 371 |
$content_width = $GLOBALS['content_width']; |
| 372 |
} |
| 373 |
|
| 374 |
if ( ! $content_width ) { |
| 375 |
$content_width = 1000; |
| 376 |
} |
| 377 |
if ( is_array( $size ) && $size[0] < $content_width ) { |
| 378 |
return $sizes; |
| 379 |
} |
| 380 |
|
| 381 |
return sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $content_width ); |
| 382 |
} |
| 383 |
|
| 384 |
/** |
| 385 |
* This filter will replace all the images retrieved via "wp_get_image" type of functions. |
| 386 |
* |
| 387 |
* @param array $image The filtered value. |
| 388 |
* @param int $attachment_id The related attachment id. |
| 389 |
* @param array|string $size This could be the name of the thumbnail size or an array of custom dimensions. |
| 390 |
* |
| 391 |
* @return array |
| 392 |
*/ |
| 393 |
public function filter_image_downsize( $image, $attachment_id, $size ) { |
| 394 |
|
| 395 |
$image_url = wp_get_attachment_url( $attachment_id ); |
| 396 |
|
| 397 |
if ( $image_url === false ) { |
| 398 |
return $image; |
| 399 |
} |
| 400 |
|
| 401 |
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
| 402 |
$image_args = self::image_sizes(); |
| 403 |
// default size |
| 404 |
$sizes = array( |
| 405 |
'width' => isset( $image_meta['width'] ) ? intval( $image_meta['width'] ) : false, |
| 406 |
'height' => isset( $image_meta['height'] ) ? intval( $image_meta['height'] ) : false, |
| 407 |
); |
| 408 |
|
| 409 |
switch ( $size ) { |
| 410 |
case is_array( $size ): |
| 411 |
$width = isset( $size[0] ) ? (int) $size[0] : false; |
| 412 |
$height = isset( $size[1] ) ? (int) $size[1] : false; |
| 413 |
if ( ! $width || ! $height ) { |
| 414 |
break; |
| 415 |
} |
| 416 |
$image_resized = image_resize_dimensions( $sizes['width'], $sizes['height'], $width, $height ); |
| 417 |
if ( $image_resized ) { |
| 418 |
$width = $image_resized[6]; |
| 419 |
$height = $image_resized[7]; |
| 420 |
} else { |
| 421 |
$width = $image_meta['width']; |
| 422 |
$height = $image_meta['height']; |
| 423 |
} |
| 424 |
list( $sizes['width'], $sizes['height'] ) = image_constrain_size_for_editor( $width, $height, $size ); |
| 425 |
|
| 426 |
break; |
| 427 |
case 'full' !== $size && isset( $image_args[ $size ] ): |
| 428 |
$image_resized = image_resize_dimensions( $sizes['width'], $sizes['height'], $image_args[ $size ]['width'], $image_args[ $size ]['height'], $image_args[ $size ]['crop'] ); |
| 429 |
|
| 430 |
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image. |
| 431 |
$sizes['width'] = $image_resized[6]; |
| 432 |
$sizes['height'] = $image_resized[7]; |
| 433 |
} |
| 434 |
|
| 435 |
list( $sizes['width'], $sizes['height'] ) = image_constrain_size_for_editor( $sizes['width'], $sizes['height'], $size, 'display' ); |
| 436 |
|
| 437 |
$sizes['resize'] = $this->to_optml_crop( $image_args[ $size ]['crop'] ); |
| 438 |
|
| 439 |
break; |
| 440 |
} |
| 441 |
$image_url = $this->strip_image_size_from_url( $image_url ); |
| 442 |
|
| 443 |
$new_url = apply_filters( 'optml_content_url', $image_url, $sizes ); |
| 444 |
|
| 445 |
if ( $new_url === $image_url ) { |
| 446 |
return $image; |
| 447 |
} |
| 448 |
|
| 449 |
return array( |
| 450 |
$new_url, |
| 451 |
$sizes['width'], |
| 452 |
$sizes['height'], |
| 453 |
$size === 'full', |
| 454 |
); |
| 455 |
} |
| 456 |
|
| 457 |
/** |
| 458 |
* Throw error on object clone |
| 459 |
* |
| 460 |
* The whole idea of the singleton design pattern is that there is a single |
| 461 |
* object therefore, we don't want the object to be cloned. |
| 462 |
* |
| 463 |
* @codeCoverageIgnore |
| 464 |
* @access public |
| 465 |
* @since 1.0.0 |
| 466 |
* @return void |
| 467 |
*/ |
| 468 |
public function __clone() { |
| 469 |
// Cloning instances of the class is forbidden. |
| 470 |
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' ); |
| 471 |
} |
| 472 |
|
| 473 |
/** |
| 474 |
* Disable unserializing of the class |
| 475 |
* |
| 476 |
* @codeCoverageIgnore |
| 477 |
* @access public |
| 478 |
* @since 1.0.0 |
| 479 |
* @return void |
| 480 |
*/ |
| 481 |
public function __wakeup() { |
| 482 |
// Unserializing instances of the class is forbidden. |
| 483 |
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' ); |
| 484 |
} |
| 485 |
|
| 486 |
} |
| 487 |
|
