class-wpml-media-image-parser.php
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<?php
namespace WPML\Media\Classes;
use WPML\FP\Obj;
use WPML\FP\Str;
/**
* Image block parser
*/
class WPML_Media_Image_Parser extends WPML_Media_Element_Parser {
protected static $getFromCssBackgroundImagesRegex = '/<\w+[^>]+style\s?=\s?"[^"]*?background-image:url\(\s?([^\s\)]+)\s?\)/';
protected static $mediaElementsRegex = [
'/<img ([^>]+)>/s',
'/<video ([^>]+)>/s',
'/<audio ([^>]+)>/s',
];
public function getMediaElements() {
$mediaElements = $this->getFromTags();
$blocks = parse_blocks( $this->blockText );
return $blocks ? array_merge( $mediaElements, $this->getFromCssBackgroundImagesInBlocks( $blocks ) )
: array_merge( $mediaElements, $this->getFromCssBackgroundImages( $this->blockText ) );
}
public function getMediaSrcFromAttributes( $attrs ) {
return Obj::propOr( '', 'src', $attrs );
}
protected function getFromTags() {
$mediaElements = wpml_collect( [] );
foreach ( self::$mediaElementsRegex as $mediaElementExpression ) {
if ( preg_match_all( $mediaElementExpression, $this->blockText, $matches ) ) {
$mediaElements = $mediaElements->merge( $this->getAttachments( $matches ) );
}
}
return $mediaElements->toArray();
}
/**
* Checks if media element is Image Block and 'parse_blocks' function exists.
*
* @return bool
*/
public function validate() {
return (
( function_exists( 'parse_blocks' ) &&
( Str::includes( '<!-- wp:image', $this->blockText )
|| Str::includes( '<!-- wp:video', $this->blockText )
|| Str::includes( '<!-- wp:audio', $this->blockText )
)
)
||
Str::includes( '<img', $this->blockText )
||
Str::includes( '<video', $this->blockText )
||
Str::includes( '<audio', $this->blockText )
);
}
/**
* `parse_blocks` does not specify which kind of collection it should return
* (not always an array of `WP_Block_Parser_Block`) and the block parser can be filtered,
* so we'll cast it to a standard object for now.
*
* @param mixed $block
*
* @return \stdClass|\WP_Block_Parser_Block
*/
protected function sanitizeBlock( $block ) {
$block = (object) $block;
if ( isset( $block->attrs ) ) {
/** Sometimes `$block->attrs` is an object or an array, so we'll use an object */
$block->attrs = (object) $block->attrs;
}
return $block;
}
/**
* @param string $text
*
* @return array
*/
protected function getFromCssBackgroundImages( $text ) {
$images = [];
if ( preg_match_all( self::$getFromCssBackgroundImagesRegex, $text, $matches ) ) {
foreach ( $matches[1] as $src ) {
$images[] = [
'attributes' => [ 'src' => $src ],
];
}
}
return $images;
}
/**
* @param array $blocks
*
* @return array
*/
protected function getFromCssBackgroundImagesInBlocks( $blocks ) {
$images = [];
foreach ( $blocks as $block ) {
$block = $this->sanitizeBlock( $block );
if ( ! empty( $block->innerBlocks ) ) {
$inner_images = $this->getFromCssBackgroundImagesInBlocks( $block->innerBlocks );
$images = array_merge( $images, $inner_images );
continue;
}
if ( ! isset( $block->innerHTML, $block->attrs->id ) ) {
continue;
}
$background_images = $this->getFromCssBackgroundImages( $block->innerHTML );
$image = reset( $background_images );
if ( $image ) {
$images[] = $image;
}
}
return $images;
}
}