| 1 |
<?php |
| 2 |
namespace Imagify\Webp\Picture; |
| 3 |
|
| 4 |
defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' ); |
| 5 |
|
| 6 |
/** |
| 7 |
* Display WebP images on the site with <picture> tags. |
| 8 |
* |
| 9 |
* @since 1.9 |
| 10 |
* @author Grégory Viguier |
| 11 |
*/ |
| 12 |
class Display { |
| 13 |
use \Imagify\Traits\InstanceGetterTrait; |
| 14 |
|
| 15 |
/** |
| 16 |
* Option value. |
| 17 |
* |
| 18 |
* @var string |
| 19 |
* @since 1.9 |
| 20 |
* @author Grégory Viguier |
| 21 |
*/ |
| 22 |
const OPTION_VALUE = 'picture'; |
| 23 |
|
| 24 |
/** |
| 25 |
* Filesystem object. |
| 26 |
* |
| 27 |
* @var \Imagify_Filesystem |
| 28 |
* @since 1.9 |
| 29 |
* @access protected |
| 30 |
* @author Grégory Viguier |
| 31 |
*/ |
| 32 |
protected $filesystem; |
| 33 |
|
| 34 |
/** |
| 35 |
* Constructor. |
| 36 |
* |
| 37 |
* @since 1.9 |
| 38 |
* @access public |
| 39 |
* @author Grégory Viguier |
| 40 |
*/ |
| 41 |
public function __construct() { |
| 42 |
$this->filesystem = \Imagify_Filesystem::get_instance(); |
| 43 |
} |
| 44 |
|
| 45 |
/** |
| 46 |
* Init. |
| 47 |
* |
| 48 |
* @since 1.9 |
| 49 |
* @access public |
| 50 |
* @author Grégory Viguier |
| 51 |
*/ |
| 52 |
public function init() { |
| 53 |
add_action( 'template_redirect', [ $this, 'start_content_process' ], -1000 ); |
| 54 |
add_filter( 'imagify_process_webp_content', [ $this, 'process_content' ] ); |
| 55 |
} |
| 56 |
|
| 57 |
/** ----------------------------------------------------------------------------------------- */ |
| 58 |
/** ADD <PICTURE> TAGS TO THE PAGE ========================================================== */ |
| 59 |
/** ----------------------------------------------------------------------------------------- */ |
| 60 |
|
| 61 |
/** |
| 62 |
* Start buffering the page content. |
| 63 |
* |
| 64 |
* @since 1.9 |
| 65 |
* @access public |
| 66 |
* @author Grégory Viguier |
| 67 |
*/ |
| 68 |
public function start_content_process() { |
| 69 |
if ( ! get_imagify_option( 'display_webp' ) ) { |
| 70 |
return; |
| 71 |
} |
| 72 |
|
| 73 |
if ( self::OPTION_VALUE !== get_imagify_option( 'display_webp_method' ) ) { |
| 74 |
return; |
| 75 |
} |
| 76 |
|
| 77 |
/** |
| 78 |
* Prevent the replacement of <img> tags into <picture> tags. |
| 79 |
* |
| 80 |
* @since 1.9 |
| 81 |
* @author Grégory Viguier |
| 82 |
* |
| 83 |
* @param bool $allow True to allow the use of <picture> tags (default). False to prevent their use. |
| 84 |
*/ |
| 85 |
$allow = apply_filters( 'imagify_allow_picture_tags_for_webp', true ); |
| 86 |
|
| 87 |
if ( ! $allow ) { |
| 88 |
return; |
| 89 |
} |
| 90 |
|
| 91 |
ob_start( [ $this, 'maybe_process_buffer' ] ); |
| 92 |
} |
| 93 |
|
| 94 |
/** |
| 95 |
* Maybe process the page content. |
| 96 |
* |
| 97 |
* @since 1.9 |
| 98 |
* @access public |
| 99 |
* @author Grégory Viguier |
| 100 |
* |
| 101 |
* @param string $buffer The buffer content. |
| 102 |
* @return string |
| 103 |
*/ |
| 104 |
public function maybe_process_buffer( $buffer ) { |
| 105 |
if ( ! $this->is_html( $buffer ) ) { |
| 106 |
return $buffer; |
| 107 |
} |
| 108 |
|
| 109 |
if ( strlen( $buffer ) <= 255 ) { |
| 110 |
// Buffer length must be > 255 (IE does not read pages under 255 c). |
| 111 |
return $buffer; |
| 112 |
} |
| 113 |
|
| 114 |
$buffer = $this->process_content( $buffer ); |
| 115 |
|
| 116 |
/** |
| 117 |
* Filter the page content after Imagify. |
| 118 |
* |
| 119 |
* @since 1.9 |
| 120 |
* @author Grégory Viguier |
| 121 |
* |
| 122 |
* @param string $buffer The page content. |
| 123 |
*/ |
| 124 |
$buffer = (string) apply_filters( 'imagify_buffer', $buffer ); |
| 125 |
|
| 126 |
return $buffer; |
| 127 |
} |
| 128 |
|
| 129 |
/** |
| 130 |
* Process the content. |
| 131 |
* |
| 132 |
* @since 1.9 |
| 133 |
* @access public |
| 134 |
* @author Grégory Viguier |
| 135 |
* |
| 136 |
* @param string $content The content. |
| 137 |
* @return string |
| 138 |
*/ |
| 139 |
public function process_content( $content ) { |
| 140 |
$html_no_picture_tags = $this->remove_picture_tags( $content ); |
| 141 |
$images = $this->get_images( $html_no_picture_tags ); |
| 142 |
|
| 143 |
if ( ! $images ) { |
| 144 |
return $content; |
| 145 |
} |
| 146 |
|
| 147 |
foreach ( $images as $image ) { |
| 148 |
$tag = $this->build_picture_tag( $image ); |
| 149 |
$content = str_replace( $image['tag'], $tag, $content ); |
| 150 |
} |
| 151 |
|
| 152 |
return $content; |
| 153 |
} |
| 154 |
|
| 155 |
/** |
| 156 |
* Remove pre-existing <picture> tags. |
| 157 |
* |
| 158 |
* We shouldn't replace images already nested inside picture tags |
| 159 |
* that are already in the page. |
| 160 |
* |
| 161 |
* @since 1.10.0 |
| 162 |
* |
| 163 |
* @param string $html Content of the page. |
| 164 |
* |
| 165 |
* @return string HTML content without pre-existing <picture> tags. |
| 166 |
*/ |
| 167 |
private function remove_picture_tags( $html ) { |
| 168 |
$replace = preg_replace( '#<picture[^>]*>.*?<\/picture\s*>#mis', '', $html ); |
| 169 |
|
| 170 |
if ( null === $replace ) { |
| 171 |
return $html; |
| 172 |
} |
| 173 |
|
| 174 |
return $replace; |
| 175 |
} |
| 176 |
|
| 177 |
/** ----------------------------------------------------------------------------------------- */ |
| 178 |
/** BUILD HTML TAGS AND ATTRIBUTES ========================================================== */ |
| 179 |
/** ----------------------------------------------------------------------------------------- */ |
| 180 |
|
| 181 |
/** |
| 182 |
* Build the <picture> tag to insert. |
| 183 |
* |
| 184 |
* @since 1.9 |
| 185 |
* @see $this->process_image() |
| 186 |
* @access protected |
| 187 |
* @author Grégory Viguier |
| 188 |
* |
| 189 |
* @param array $image An array of data. |
| 190 |
* @return string A <picture> tag. |
| 191 |
*/ |
| 192 |
protected function build_picture_tag( $image ) { |
| 193 |
$to_remove = [ |
| 194 |
'alt' => '', |
| 195 |
'height' => '', |
| 196 |
'width' => '', |
| 197 |
'data-lazy-src' => '', |
| 198 |
'data-src' => '', |
| 199 |
'src' => '', |
| 200 |
'data-lazy-srcset' => '', |
| 201 |
'data-srcset' => '', |
| 202 |
'srcset' => '', |
| 203 |
'data-lazy-sizes' => '', |
| 204 |
'data-sizes' => '', |
| 205 |
'sizes' => '', |
| 206 |
]; |
| 207 |
|
| 208 |
$attributes = array_diff_key( $image['attributes'], $to_remove ); |
| 209 |
|
| 210 |
/** |
| 211 |
* Filter the attributes to be added to the <picture> tag. |
| 212 |
* |
| 213 |
* @since 1.9 |
| 214 |
* @author Grégory Viguier |
| 215 |
* |
| 216 |
* @param array $attributes A list of attributes to be added to the <picture> tag. |
| 217 |
* @param array $data Data built from the originale <img> tag. See $this->process_image(). |
| 218 |
*/ |
| 219 |
$attributes = apply_filters( 'imagify_picture_attributes', $attributes, $image ); |
| 220 |
|
| 221 |
/** |
| 222 |
* Remove Gutenberg specific attributes from picture tag, leave them on img tag. |
| 223 |
* Optional: $attributes['class'] = 'imagify-webp-cover-wrapper'; for website admin styling ease. |
| 224 |
*/ |
| 225 |
if ( ! empty( $image['attributes']['class'] ) && strpos( $image['attributes']['class'], 'wp-block-cover__image-background' ) !== false ) { |
| 226 |
unset( $attributes['style'] ); |
| 227 |
unset( $attributes['class'] ); |
| 228 |
unset( $attributes['data-object-fit'] ); |
| 229 |
unset( $attributes['data-object-position'] ); |
| 230 |
} |
| 231 |
|
| 232 |
$output = '<picture' . $this->build_attributes( $attributes ) . ">\n"; |
| 233 |
/** |
| 234 |
* Allow to add more <source> tags to the <picture> tag. |
| 235 |
* |
| 236 |
* @since 1.9 |
| 237 |
* @author Grégory Viguier |
| 238 |
* |
| 239 |
* @param string $more_source_tags Additional <source> tags. |
| 240 |
* @param array $data Data built from the originale <img> tag. See $this->process_image(). |
| 241 |
*/ |
| 242 |
$output .= apply_filters( 'imagify_additional_source_tags', '', $image ); |
| 243 |
$output .= $this->build_source_tag( $image ); |
| 244 |
$output .= $this->build_img_tag( $image ); |
| 245 |
$output .= "</picture>\n"; |
| 246 |
|
| 247 |
return $output; |
| 248 |
} |
| 249 |
|
| 250 |
/** |
| 251 |
* Build the <source> tag to insert in the <picture>. |
| 252 |
* |
| 253 |
* @since 1.9 |
| 254 |
* @see $this->process_image() |
| 255 |
* @access protected |
| 256 |
* @author Grégory Viguier |
| 257 |
* |
| 258 |
* @param array $image An array of data. |
| 259 |
* @return string A <source> tag. |
| 260 |
*/ |
| 261 |
protected function build_source_tag( $image ) { |
| 262 |
$srcset_source = ! empty( $image['srcset_attribute'] ) ? $image['srcset_attribute'] : $image['src_attribute'] . 'set'; |
| 263 |
$attributes = [ |
| 264 |
'type' => 'image/webp', |
| 265 |
$srcset_source => [], |
| 266 |
]; |
| 267 |
|
| 268 |
if ( ! empty( $image['srcset'] ) ) { |
| 269 |
foreach ( $image['srcset'] as $srcset ) { |
| 270 |
if ( empty( $srcset['webp_url'] ) ) { |
| 271 |
continue; |
| 272 |
} |
| 273 |
|
| 274 |
$attributes[ $srcset_source ][] = $srcset['webp_url'] . ' ' . $srcset['descriptor']; |
| 275 |
} |
| 276 |
} |
| 277 |
|
| 278 |
if ( empty( $attributes[ $srcset_source ] ) ) { |
| 279 |
$attributes[ $srcset_source ][] = $image['src']['webp_url']; |
| 280 |
} |
| 281 |
|
| 282 |
$attributes[ $srcset_source ] = implode( ', ', $attributes[ $srcset_source ] ); |
| 283 |
|
| 284 |
foreach ( [ 'data-lazy-srcset', 'data-srcset', 'srcset' ] as $srcset_attr ) { |
| 285 |
if ( ! empty( $image['attributes'][ $srcset_attr ] ) && $srcset_attr !== $srcset_source ) { |
| 286 |
$attributes[ $srcset_attr ] = $image['attributes'][ $srcset_attr ]; |
| 287 |
} |
| 288 |
} |
| 289 |
|
| 290 |
if ( 'srcset' !== $srcset_source && empty( $attributes['srcset'] ) && ! empty( $image['attributes']['src'] ) ) { |
| 291 |
// Lazyload: the "src" attr should contain a placeholder (a data image or a blank.gif ). |
| 292 |
$attributes['srcset'] = $image['attributes']['src']; |
| 293 |
} |
| 294 |
|
| 295 |
foreach ( [ 'data-lazy-sizes', 'data-sizes', 'sizes' ] as $sizes_attr ) { |
| 296 |
if ( ! empty( $image['attributes'][ $sizes_attr ] ) ) { |
| 297 |
$attributes[ $sizes_attr ] = $image['attributes'][ $sizes_attr ]; |
| 298 |
} |
| 299 |
} |
| 300 |
|
| 301 |
/** |
| 302 |
* Filter the attributes to be added to the <source> tag. |
| 303 |
* |
| 304 |
* @since 1.9 |
| 305 |
* @author Grégory Viguier |
| 306 |
* |
| 307 |
* @param array $attributes A list of attributes to be added to the <source> tag. |
| 308 |
* @param array $data Data built from the original <img> tag. See $this->process_image(). |
| 309 |
*/ |
| 310 |
$attributes = apply_filters( 'imagify_picture_source_attributes', $attributes, $image ); |
| 311 |
|
| 312 |
return '<source' . $this->build_attributes( $attributes ) . "/>\n"; |
| 313 |
} |
| 314 |
|
| 315 |
/** |
| 316 |
* Build the <img> tag to insert in the <picture>. |
| 317 |
* |
| 318 |
* @since 1.9 |
| 319 |
* @see $this->process_image() |
| 320 |
* @access protected |
| 321 |
* @author Grégory Viguier |
| 322 |
* |
| 323 |
* @param array $image An array of data. |
| 324 |
* @return string A <img> tag. |
| 325 |
*/ |
| 326 |
protected function build_img_tag( $image ) { |
| 327 |
/** |
| 328 |
* Gutenberg fix. |
| 329 |
* Check for the 'wp-block-cover__image-background' class on the original image, and leave that class and style attributes if found. |
| 330 |
*/ |
| 331 |
if ( ! empty( $image['attributes']['class'] ) && strpos( $image['attributes']['class'], 'wp-block-cover__image-background' ) !== false ) { |
| 332 |
$to_remove = [ |
| 333 |
'id' => '', |
| 334 |
'title' => '', |
| 335 |
]; |
| 336 |
|
| 337 |
$attributes = array_diff_key( $image['attributes'], $to_remove ); |
| 338 |
} else { |
| 339 |
$to_remove = [ |
| 340 |
'class' => '', |
| 341 |
'id' => '', |
| 342 |
'style' => '', |
| 343 |
'title' => '', |
| 344 |
]; |
| 345 |
|
| 346 |
$attributes = array_diff_key( $image['attributes'], $to_remove ); |
| 347 |
} |
| 348 |
|
| 349 |
/** |
| 350 |
* Filter the attributes to be added to the <img> tag. |
| 351 |
* |
| 352 |
* @since 1.9 |
| 353 |
* @author Grégory Viguier |
| 354 |
* |
| 355 |
* @param array $attributes A list of attributes to be added to the <img> tag. |
| 356 |
* @param array $data Data built from the originale <img> tag. See $this->process_image(). |
| 357 |
*/ |
| 358 |
$attributes = apply_filters( 'imagify_picture_img_attributes', $attributes, $image ); |
| 359 |
|
| 360 |
return '<img' . $this->build_attributes( $attributes ) . "/>\n"; |
| 361 |
} |
| 362 |
|
| 363 |
/** |
| 364 |
* Create HTML attributes from an array. |
| 365 |
* |
| 366 |
* @since 1.9 |
| 367 |
* @access protected |
| 368 |
* @author Grégory Viguier |
| 369 |
* |
| 370 |
* @param array $attributes A list of attribute pairs. |
| 371 |
* @return string HTML attributes. |
| 372 |
*/ |
| 373 |
protected function build_attributes( $attributes ) { |
| 374 |
if ( ! $attributes || ! is_array( $attributes ) ) { |
| 375 |
return ''; |
| 376 |
} |
| 377 |
|
| 378 |
$out = ''; |
| 379 |
|
| 380 |
foreach ( $attributes as $attribute => $value ) { |
| 381 |
$out .= ' ' . $attribute . '="' . esc_attr( $value ) . '"'; |
| 382 |
} |
| 383 |
|
| 384 |
return $out; |
| 385 |
} |
| 386 |
|
| 387 |
/** ----------------------------------------------------------------------------------------- */ |
| 388 |
/** VARIOUS TOOLS =========================================================================== */ |
| 389 |
/** ----------------------------------------------------------------------------------------- */ |
| 390 |
|
| 391 |
/** |
| 392 |
* Get a list of images in a content. |
| 393 |
* |
| 394 |
* @since 1.9 |
| 395 |
* @access protected |
| 396 |
* @author Grégory Viguier |
| 397 |
* |
| 398 |
* @param string $content The content. |
| 399 |
* @return array |
| 400 |
*/ |
| 401 |
protected function get_images( $content ) { |
| 402 |
// Remove comments. |
| 403 |
$content = preg_replace( '/<!--(.*)-->/Uis', '', $content ); |
| 404 |
|
| 405 |
if ( ! preg_match_all( '/<img\s.*>/isU', $content, $matches ) ) { |
| 406 |
return []; |
| 407 |
} |
| 408 |
|
| 409 |
$images = array_map( [ $this, 'process_image' ], $matches[0] ); |
| 410 |
$images = array_filter( $images ); |
| 411 |
|
| 412 |
/** |
| 413 |
* Filter the images to display with a <picture> tag. |
| 414 |
* |
| 415 |
* @since 1.9 |
| 416 |
* @see $this->process_image() |
| 417 |
* @author Grégory Viguier |
| 418 |
* |
| 419 |
* @param array $images A list of arrays. |
| 420 |
* @param string $content The page content. |
| 421 |
*/ |
| 422 |
$images = apply_filters( 'imagify_webp_picture_images_to_display', $images, $content ); |
| 423 |
|
| 424 |
if ( ! $images || ! is_array( $images ) ) { |
| 425 |
return []; |
| 426 |
} |
| 427 |
|
| 428 |
foreach ( $images as $i => $image ) { |
| 429 |
if ( empty( $image['src']['webp_exists'] ) || empty( $image['src']['webp_url'] ) ) { |
| 430 |
unset( $images[ $i ] ); |
| 431 |
continue; |
| 432 |
} |
| 433 |
|
| 434 |
unset( $images[ $i ]['src']['webp_path'], $images[ $i ]['src']['webp_exists'] ); |
| 435 |
|
| 436 |
if ( empty( $image['srcset'] ) || ! is_array( $image['srcset'] ) ) { |
| 437 |
unset( $images[ $i ]['srcset'] ); |
| 438 |
continue; |
| 439 |
} |
| 440 |
|
| 441 |
foreach ( $image['srcset'] as $j => $srcset ) { |
| 442 |
if ( ! is_array( $srcset ) ) { |
| 443 |
continue; |
| 444 |
} |
| 445 |
|
| 446 |
if ( empty( $srcset['webp_exists'] ) || empty( $srcset['webp_url'] ) ) { |
| 447 |
unset( $images[ $i ]['srcset'][ $j ]['webp_url'] ); |
| 448 |
} |
| 449 |
|
| 450 |
unset( $images[ $i ]['srcset'][ $j ]['webp_path'], $images[ $i ]['srcset'][ $j ]['webp_exists'] ); |
| 451 |
} |
| 452 |
} |
| 453 |
|
| 454 |
return $images; |
| 455 |
} |
| 456 |
|
| 457 |
/** |
| 458 |
* Process an image tag and get an array containing some data. |
| 459 |
* |
| 460 |
* @since 1.9 |
| 461 |
* @access protected |
| 462 |
* @author Grégory Viguier |
| 463 |
* |
| 464 |
* @param string $image An image html tag. |
| 465 |
* @return array|false { |
| 466 |
* An array of data if the image has a WebP version. False otherwise. |
| 467 |
* |
| 468 |
* @type string $tag The image tag. |
| 469 |
* @type array $attributes The image attributes (minus src and srcset). |
| 470 |
* @type array $src { |
| 471 |
* @type string $url URL to the original image. |
| 472 |
* @type string $webp_url URL to the WebP version. |
| 473 |
* } |
| 474 |
* @type array $srcset { |
| 475 |
* An array or arrays. Not set if not applicable. |
| 476 |
* |
| 477 |
* @type string $url URL to the original image. |
| 478 |
* @type string $webp_url URL to the WebP version. Not set if not applicable. |
| 479 |
* @type string $descriptor A src descriptor. |
| 480 |
* } |
| 481 |
* } |
| 482 |
*/ |
| 483 |
protected function process_image( $image ) { |
| 484 |
static $extensions; |
| 485 |
|
| 486 |
$atts_pattern = '/(?<name>[^\s"\']+)\s*=\s*(["\'])\s*(?<value>.*?)\s*\2/s'; |
| 487 |
|
| 488 |
if ( ! preg_match_all( $atts_pattern, $image, $tmp_attributes, PREG_SET_ORDER ) ) { |
| 489 |
// No attributes? |
| 490 |
return false; |
| 491 |
} |
| 492 |
|
| 493 |
$attributes = []; |
| 494 |
|
| 495 |
foreach ( $tmp_attributes as $attribute ) { |
| 496 |
$attributes[ $attribute['name'] ] = $attribute['value']; |
| 497 |
} |
| 498 |
|
| 499 |
if ( ! empty( $attributes['class'] ) && strpos( $attributes['class'], 'imagify-no-webp' ) !== false ) { |
| 500 |
// Has the 'imagify-no-webp' class. |
| 501 |
return false; |
| 502 |
} |
| 503 |
|
| 504 |
// Deal with the src attribute. |
| 505 |
$src_source = false; |
| 506 |
|
| 507 |
foreach ( [ 'data-lazy-src', 'data-src', 'src' ] as $src_attr ) { |
| 508 |
if ( ! empty( $attributes[ $src_attr ] ) ) { |
| 509 |
$src_source = $src_attr; |
| 510 |
break; |
| 511 |
} |
| 512 |
} |
| 513 |
|
| 514 |
if ( ! $src_source ) { |
| 515 |
// No src attribute. |
| 516 |
return false; |
| 517 |
} |
| 518 |
|
| 519 |
if ( ! isset( $extensions ) ) { |
| 520 |
$extensions = imagify_get_mime_types( 'image' ); |
| 521 |
$extensions = array_keys( $extensions ); |
| 522 |
$extensions = implode( '|', $extensions ); |
| 523 |
} |
| 524 |
|
| 525 |
if ( ! preg_match( '@^(?<src>(?:(?:https?:)?//|/).+\.(?<extension>' . $extensions . '))(?<query>\?.*)?$@i', $attributes[ $src_source ], $src ) ) { |
| 526 |
// Not a supported image format. |
| 527 |
return false; |
| 528 |
} |
| 529 |
|
| 530 |
$webp_url = imagify_path_to_webp( $src['src'] ); |
| 531 |
$webp_path = $this->url_to_path( $webp_url ); |
| 532 |
$webp_url .= ! empty( $src['query'] ) ? $src['query'] : ''; |
| 533 |
|
| 534 |
$data = [ |
| 535 |
'tag' => $image, |
| 536 |
'attributes' => $attributes, |
| 537 |
'src_attribute' => $src_source, |
| 538 |
'src' => [ |
| 539 |
'url' => $attributes[ $src_source ], |
| 540 |
'webp_url' => $webp_url, |
| 541 |
'webp_path' => $webp_path, |
| 542 |
'webp_exists' => $webp_path && $this->filesystem->exists( $webp_path ), |
| 543 |
], |
| 544 |
'srcset_attribute' => false, |
| 545 |
'srcset' => [], |
| 546 |
]; |
| 547 |
|
| 548 |
// Deal with the srcset attribute. |
| 549 |
$srcset_source = false; |
| 550 |
|
| 551 |
foreach ( [ 'data-lazy-srcset', 'data-srcset', 'srcset' ] as $srcset_attr ) { |
| 552 |
if ( ! empty( $attributes[ $srcset_attr ] ) ) { |
| 553 |
$srcset_source = $srcset_attr; |
| 554 |
break; |
| 555 |
} |
| 556 |
} |
| 557 |
|
| 558 |
if ( $srcset_source ) { |
| 559 |
$data['srcset_attribute'] = $srcset_source; |
| 560 |
|
| 561 |
$srcset = explode( ',', $attributes[ $srcset_source ] ); |
| 562 |
|
| 563 |
foreach ( $srcset as $srcs ) { |
| 564 |
$srcs = preg_split( '/\s+/', trim( $srcs ) ); |
| 565 |
|
| 566 |
if ( count( $srcs ) > 2 ) { |
| 567 |
// Not a good idea to have space characters in file name. |
| 568 |
$descriptor = array_pop( $srcs ); |
| 569 |
$srcs = [ implode( ' ', $srcs ), $descriptor ]; |
| 570 |
} |
| 571 |
|
| 572 |
if ( empty( $srcs[1] ) ) { |
| 573 |
$srcs[1] = '1x'; |
| 574 |
} |
| 575 |
|
| 576 |
if ( ! preg_match( '@^(?<src>(?:https?:)?//.+\.(?<extension>' . $extensions . '))(?<query>\?.*)?$@i', $srcs[0], $src ) ) { |
| 577 |
// Not a supported image format. |
| 578 |
$data['srcset'][] = [ |
| 579 |
'url' => $srcs[0], |
| 580 |
'descriptor' => $srcs[1], |
| 581 |
]; |
| 582 |
continue; |
| 583 |
} |
| 584 |
|
| 585 |
$webp_url = imagify_path_to_webp( $src['src'] ); |
| 586 |
$webp_path = $this->url_to_path( $webp_url ); |
| 587 |
$webp_url .= ! empty( $src['query'] ) ? $src['query'] : ''; |
| 588 |
|
| 589 |
$data['srcset'][] = [ |
| 590 |
'url' => $srcs[0], |
| 591 |
'descriptor' => $srcs[1], |
| 592 |
'webp_url' => $webp_url, |
| 593 |
'webp_path' => $webp_path, |
| 594 |
'webp_exists' => $webp_path && $this->filesystem->exists( $webp_path ), |
| 595 |
]; |
| 596 |
} |
| 597 |
} |
| 598 |
|
| 599 |
/** |
| 600 |
* Filter a processed image tag. |
| 601 |
* |
| 602 |
* @since 1.9 |
| 603 |
* @author Grégory Viguier |
| 604 |
* |
| 605 |
* @param array $data An array of data for this image. |
| 606 |
* @param string $image An image html tag. |
| 607 |
*/ |
| 608 |
$data = apply_filters( 'imagify_webp_picture_process_image', $data, $image ); |
| 609 |
|
| 610 |
if ( ! $data || ! is_array( $data ) ) { |
| 611 |
return false; |
| 612 |
} |
| 613 |
|
| 614 |
if ( ! isset( $data['tag'], $data['attributes'], $data['src_attribute'], $data['src'], $data['srcset_attribute'], $data['srcset'] ) ) { |
| 615 |
return false; |
| 616 |
} |
| 617 |
|
| 618 |
return $data; |
| 619 |
} |
| 620 |
|
| 621 |
/** |
| 622 |
* Tell if a content is HTML. |
| 623 |
* |
| 624 |
* @since 1.9 |
| 625 |
* @access protected |
| 626 |
* @author Grégory Viguier |
| 627 |
* |
| 628 |
* @param string $content The content. |
| 629 |
* @return bool |
| 630 |
*/ |
| 631 |
protected function is_html( $content ) { |
| 632 |
return preg_match( '/<\/html>/i', $content ); |
| 633 |
} |
| 634 |
|
| 635 |
/** |
| 636 |
* Convert a file URL to an absolute path. |
| 637 |
* |
| 638 |
* @since 1.9 |
| 639 |
* @access protected |
| 640 |
* @author Grégory Viguier |
| 641 |
* |
| 642 |
* @param string $url A file URL. |
| 643 |
* @return string|bool The file path. False on failure. |
| 644 |
*/ |
| 645 |
protected function url_to_path( $url ) { |
| 646 |
static $uploads_url; |
| 647 |
static $uploads_dir; |
| 648 |
static $root_url; |
| 649 |
static $root_dir; |
| 650 |
static $cdn_url; |
| 651 |
static $domain_url; |
| 652 |
|
| 653 |
/** |
| 654 |
* $url, $uploads_url, $root_url, and $cdn_url are passed through `set_url_scheme()` only to make sure `stripos()` doesn't fail over a stupid http/https difference. |
| 655 |
*/ |
| 656 |
if ( ! isset( $uploads_url ) ) { |
| 657 |
$uploads_url = set_url_scheme( $this->filesystem->get_upload_baseurl() ); |
| 658 |
$uploads_dir = $this->filesystem->get_upload_basedir( true ); |
| 659 |
$root_url = set_url_scheme( $this->filesystem->get_site_root_url() ); |
| 660 |
$root_dir = $this->filesystem->get_site_root(); |
| 661 |
$cdn_url = $this->get_cdn_source(); |
| 662 |
$cdn_url = $cdn_url['url'] ? set_url_scheme( $cdn_url['url'] ) : false; |
| 663 |
$domain_url = wp_parse_url( $root_url ); |
| 664 |
|
| 665 |
if ( ! empty( $domain_url['scheme'] ) && ! empty( $domain_url['host'] ) ) { |
| 666 |
$domain_url = $domain_url['scheme'] . '://' . $domain_url['host'] . '/'; |
| 667 |
} else { |
| 668 |
$domain_url = false; |
| 669 |
} |
| 670 |
} |
| 671 |
|
| 672 |
// Get the right URL format. |
| 673 |
if ( $domain_url && strpos( $url, '/' ) === 0 ) { |
| 674 |
// URL like `/path/to/image.jpg.webp`. |
| 675 |
$url = $domain_url . ltrim( $url, '/' ); |
| 676 |
} |
| 677 |
|
| 678 |
$url = set_url_scheme( $url ); |
| 679 |
|
| 680 |
if ( $cdn_url && $domain_url && stripos( $url, $cdn_url ) === 0 ) { |
| 681 |
// CDN. |
| 682 |
$url = str_ireplace( $cdn_url, $domain_url, $url ); |
| 683 |
} |
| 684 |
|
| 685 |
// Return the path. |
| 686 |
if ( stripos( $url, $uploads_url ) === 0 ) { |
| 687 |
return str_ireplace( $uploads_url, $uploads_dir, $url ); |
| 688 |
} |
| 689 |
|
| 690 |
if ( stripos( $url, $root_url ) === 0 ) { |
| 691 |
return str_ireplace( $root_url, $root_dir, $url ); |
| 692 |
} |
| 693 |
|
| 694 |
return false; |
| 695 |
} |
| 696 |
|
| 697 |
/** |
| 698 |
* Get the CDN "source". |
| 699 |
* |
| 700 |
* @since 1.9.3 |
| 701 |
* @access public |
| 702 |
* @author Grégory Viguier |
| 703 |
* |
| 704 |
* @param string $option_url An URL to use instead of the one stored in the option. It is used only if no constant/filter. |
| 705 |
* @return array { |
| 706 |
* @type string $source Where does it come from? Possible values are 'constant', 'filter', or 'option'. |
| 707 |
* @type string $name Who? Can be a constant name, a plugin name, or an empty string. |
| 708 |
* @type string $url The CDN URL, with a trailing slash. An empty string if no URL is set. |
| 709 |
* } |
| 710 |
*/ |
| 711 |
public function get_cdn_source( $option_url = '' ) { |
| 712 |
if ( defined( 'IMAGIFY_CDN_URL' ) && IMAGIFY_CDN_URL && is_string( IMAGIFY_CDN_URL ) ) { |
| 713 |
// Use a constant. |
| 714 |
$source = [ |
| 715 |
'source' => 'constant', |
| 716 |
'name' => 'IMAGIFY_CDN_URL', |
| 717 |
'url' => IMAGIFY_CDN_URL, |
| 718 |
]; |
| 719 |
} else { |
| 720 |
// Maybe use a filter. |
| 721 |
$filter_source = [ |
| 722 |
'name' => null, |
| 723 |
'url' => null, |
| 724 |
]; |
| 725 |
|
| 726 |
/** |
| 727 |
* Provide a custom CDN source. |
| 728 |
* |
| 729 |
* @since 1.9.3 |
| 730 |
* @author Grégory Viguier |
| 731 |
* |
| 732 |
* @param array $filter_source { |
| 733 |
* @type $name string The name of which provides the URL (plugin name, etc). |
| 734 |
* @type $url string The CDN URL. |
| 735 |
* } |
| 736 |
*/ |
| 737 |
$filter_source = apply_filters( 'imagify_cdn_source', $filter_source ); |
| 738 |
|
| 739 |
if ( ! empty( $filter_source['url'] ) ) { |
| 740 |
$source = [ |
| 741 |
'source' => 'filter', |
| 742 |
'name' => ! empty( $filter_source['name'] ) ? $filter_source['name'] : '', |
| 743 |
'url' => $filter_source['url'], |
| 744 |
]; |
| 745 |
} |
| 746 |
} |
| 747 |
|
| 748 |
if ( empty( $source['url'] ) ) { |
| 749 |
// No constant, no filter: use the option. |
| 750 |
$source = [ |
| 751 |
'source' => 'option', |
| 752 |
'name' => '', |
| 753 |
'url' => $option_url && is_string( $option_url ) ? $option_url : get_imagify_option( 'cdn_url' ), |
| 754 |
]; |
| 755 |
} |
| 756 |
|
| 757 |
if ( empty( $source['url'] ) ) { |
| 758 |
// Nothing set. |
| 759 |
return [ |
| 760 |
'source' => 'option', |
| 761 |
'name' => '', |
| 762 |
'url' => '', |
| 763 |
]; |
| 764 |
} |
| 765 |
|
| 766 |
$source['url'] = $this->sanitize_cdn_url( $source['url'] ); |
| 767 |
|
| 768 |
if ( empty( $source['url'] ) ) { |
| 769 |
// Not an URL. |
| 770 |
return [ |
| 771 |
'source' => 'option', |
| 772 |
'name' => '', |
| 773 |
'url' => '', |
| 774 |
]; |
| 775 |
} |
| 776 |
|
| 777 |
return $source; |
| 778 |
} |
| 779 |
|
| 780 |
/** |
| 781 |
* Sanitize the CDN URL value. |
| 782 |
* |
| 783 |
* @since 1.9.3 |
| 784 |
* @access public |
| 785 |
* @author Grégory Viguier |
| 786 |
* |
| 787 |
* @param string $url The URL to sanitize. |
| 788 |
* @return string |
| 789 |
*/ |
| 790 |
public function sanitize_cdn_url( $url ) { |
| 791 |
$url = sanitize_text_field( $url ); |
| 792 |
|
| 793 |
if ( ! $url || ! preg_match( '@^https?://.+\.[^.]+@i', $url ) ) { |
| 794 |
// Not an URL. |
| 795 |
return ''; |
| 796 |
} |
| 797 |
|
| 798 |
return trailingslashit( $url ); |
| 799 |
} |
| 800 |
} |
| 801 |
|
