*/
final class Optml_Tag_Replacer extends Optml_App_Replacer {
use Optml_Normalizer;
use Optml_Validator;
/**
* Cached object instance.
*
* @var Optml_Tag_Replacer
*/
protected static $instance = null;
/**
* Class instance method.
*
* @codeCoverageIgnore
* @static
* @since 1.0.0
* @access public
* @return Optml_Tag_Replacer
*/
public static function instance() {
if ( null === self::$instance ) {
self::$instance = new self();
add_action( 'optml_replacer_setup', [ self::$instance, 'init' ] );
}
return self::$instance;
}
/**
* The initialize method.
*/
public function init() {
parent::init();
add_filter( 'optml_content_images_tags', [ $this, 'process_image_tags' ], 1, 2 );
if ( $this->settings->use_lazyload() ) {
return;
}
add_filter( 'optml_tag_replace', [ $this, 'regular_tag_replace' ], 1, 6 );
add_filter( 'image_downsize', [ $this, 'filter_image_downsize' ], PHP_INT_MAX, 3 );
add_filter( 'wp_calculate_image_srcset', [ $this, 'filter_srcset_attr' ], PHP_INT_MAX, 5 );
add_filter( 'wp_calculate_image_sizes', [ $this, 'filter_sizes_attr' ], 1, 2 );
}
/**
* Called by hook to replace image tags in content.
*
* @param string $content The content to process.
* @param array $images List of image tags.
*
* @return mixed
*/
/**
* Replace in given content the given image tags with video tags is image is gif
*
* @param string $image_url Image url to process.
* @param string $image_tag The tag to replace.
* @param string $content The content to process.
*
* @return bool
*/
public function img_to_video( $image_url, $image_tag, &$content ) {
if ( $this->settings->get( 'img_to_video' ) === 'disabled' ) {
return false;
}
if ( ! $this->is_valid_gif( $image_url ) ) {
return false;
}
$link_mp4 = apply_filters(
'optml_content_url',
$image_url,
['width' => 'auto',
'height' => 'auto',
'format' => 'mp4',
]
);
$link_png = apply_filters(
'optml_content_url',
$image_url,
['width' => 'auto',
'height' => 'auto',
'quality' => 'eco',
]
);
$video_tag = $image_tag;
$video_tag = str_replace(
[
'src=',
'',
],
[
'original-src=',
'',
],
$video_tag
);
$content = str_replace( $image_tag, $video_tag, $content );
return true;
}
/**
* Method invoked by `optml_content_images_tags` filter.
*
* @param string $content The content to be processed.
* @param array $images A list of images.
*
* @return mixed
*/
public function process_image_tags( $content, $images = [] ) {
$image_sizes = self::image_sizes();
$sizes2crop = self::size_to_crop();
foreach ( $images[0] as $index => $tag ) {
$width = $height = false;
$crop = null;
$image_tag = $images['img_tag'][ $index ];
$is_slashed = strpos( $images['img_url'][ $index ], '\/' ) !== false;
$src = $tmp = $is_slashed ? $this->strip_slashes( $images['img_url'][ $index ] ) : $images['img_url'][ $index ];
if ( strpos( $src, $this->upload_resource['content_path'] ) === 0 ) {
$src = $tmp = untrailingslashit( $this->upload_resource['content_host'] ) . $src;
$new_src = $is_slashed ? addcslashes( $src, '/' ) : $src;
$image_tag = str_replace(
[
'"' . $images['img_url'][ $index ],
"'" . $images['img_url'][ $index ],
],
[
'"' . $new_src,
"'" . $new_src,
],
$image_tag
);
$images['img_url'][ $index ] = $new_src;
}
if ( ( apply_filters( 'optml_ignore_image_link', false, $src ) ||
false !== strpos( $src, Optml_Config::$service_url ) ||
! $this->can_replace_url( $src ) ||
! $this->can_replace_tag( $images['img_url'][ $index ], $tag ) ) && ! Optml_Media_Offload::is_not_processed_image( $src )
) {
continue; // @codeCoverageIgnore
}
if ( $this->img_to_video( $images['img_url'][ $index ], $images['img_tag'][ $index ], $content ) ) {
continue;
}
$resize = apply_filters( 'optml_default_crop', [] );
list( $width, $height, $resize ) = self::parse_dimensions_from_tag(
$images['img_tag'][ $index ],
$image_sizes,
[
'width' => $width,
'height' => $height,
'resize' => $resize,
]
);
if ( false === $width && false === $height ) {
list( $width, $height, $crop ) = $this->parse_dimensions_from_filename( $tmp );
}
if ( empty( $resize ) && isset( $sizes2crop[ $width . $height ] ) ) {
$resize = $this->to_optml_crop( $sizes2crop[ $width . $height ] );
} elseif ( $crop === true ) {
$resize = $this->to_optml_crop( $crop );
}
$optml_args = [ 'width' => $width, 'height' => $height, 'resize' => $resize ];
$tmp = $this->strip_image_size_from_url( $tmp );
$new_url = apply_filters( 'optml_content_url', $tmp, $optml_args );
if ( $new_url === $tmp && ! Optml_Media_Offload::is_not_processed_image( $src ) ) {
continue; // @codeCoverageIgnore
}
$image_tag = str_replace(
[
'width="' . $width . '"',
'width=\"' . $width . '\"',
'height="' . $height . '"',
'height=\"' . $height . '\"',
],
[
'width="' . $optml_args['width'] . '"',
'width=\"' . $optml_args['width'] . '\"',
'height="' . $optml_args['height'] . '"',
'height=\"' . $optml_args['height'] . '\"',
],
$image_tag
);
// If the image is in header or has a class excluded from lazyload, we need to do the regular replace.
if ( $images['in_header'][ $index ] ) {
$image_tag = $this->regular_tag_replace( $image_tag, $images['img_url'][ $index ], $new_url, $optml_args, $is_slashed, $tag );
} else {
$image_tag = apply_filters( 'optml_tag_replace', $image_tag, $images['img_url'][ $index ], $new_url, $optml_args, $is_slashed, $tag );
}
$content = str_replace( $images['img_tag'][ $index ], $image_tag, $content );
}
return $content;
}
/**
* Check replacement is allowed for this tag.
*
* @param string $url Url.
* @param string $tag Html tag.
*
* @return bool We can replace?
*/
public function can_replace_tag( $url, $tag = '' ) {
foreach ( self::possible_tag_flags() as $banned_string ) {
if ( strpos( $tag, $banned_string ) !== false ) {
self::$ignored_url_map[ crc32( $url ) ] = true;
return false;
}
}
return true;
}
/**
* Extract image dimensions from img tag.
*
* @param string $tag The HTML img tag.
* @param array $image_sizes WordPress supported image sizes.
* @param array $args Default args to use.
*
* @return array
*/
private function parse_dimensions_from_tag( $tag, $image_sizes, $args = [] ) {
if ( preg_match( '#width=["|\']?([\d%]+)["|\']?#i', $tag, $width_string ) ) {
$args['width'] = $width_string[1];
}
if ( preg_match( '#height=["|\']?([\d%]+)["|\']?#i', $tag, $height_string ) ) {
$args['height'] = $height_string[1];
}
if ( preg_match( '#class=["|\']?[^"\']*size-([^"\'\s]+)[^"\']*["|\']?#i', $tag, $size ) ) {
$size = array_pop( $size );
if ( false === $args['width'] && false === $args['height'] && 'full' !== $size && array_key_exists( $size, $image_sizes ) ) {
$args['width'] = (int) $image_sizes[ $size ]['width'];
$args['height'] = (int) $image_sizes[ $size ]['height'];
}
if ( 'full' !== $size && array_key_exists( $size, $image_sizes ) ) {
$args['resize'] = $this->to_optml_crop( $image_sizes[ $size ]['crop'] );
}
} else {
$args['resize'] = apply_filters( 'optml_parse_resize_from_tag', [], $tag );
}
return [ $args['width'], $args['height'], $args['resize'] ];
}
/**
* Replaces the tags by default.
*
* @param string $new_tag The new tag.
* @param string $original_url The original URL.
* @param string $new_url The optimized URL.
* @param array $optml_args Options passed for URL optimization.
* @param bool $is_slashed Url needs to slashed.
* @param string $full_tag Full tag, wrapper included.
*
* @return string
*/
public function regular_tag_replace( $new_tag, $original_url, $new_url, $optml_args, $is_slashed = false, $full_tag = '' ) {
$pattern = '/(?to_optml_crop( $sizes[ $size_array[0] . $size_array[1] ] ) : null;
}
foreach ( $sources as $i => $source ) {
$url = $source['url'];
if ( Optml_Media_Offload::is_uploaded_image( $url ) ) {
continue;
}
list( $width, $height, $file_crop ) = $this->parse_dimensions_from_filename( $url );
if ( empty( $width ) ) {
$width = $image_meta['width'];
}
if ( empty( $height ) ) {
$height = $image_meta['height'];
}
if ( $original_url === null ) {
if ( ! empty( $attachment_id ) ) {
$original_url = wp_get_attachment_url( $attachment_id );
} else {
$original_url = $this->strip_image_size_from_url( $source['url'] );
}
}
$args = [];
if ( 'w' === $source['descriptor'] ) {
if ( $height && ( $source['value'] === $width ) ) {
$args['width'] = $width;
$args['height'] = $height;
} else {
$args['width'] = $source['value'];
}
}
if ( $cropping !== null ) {
$args['resize'] = $cropping;
} else {
$args['resize'] = $this->to_optml_crop( $file_crop );
}
$sources[ $i ]['url'] = apply_filters( 'optml_content_url', $original_url, $args );
}
return $sources;
}
/**
* Filters sizes attribute of the images.
*
* @param array $sizes An array of media query breakpoints.
* @param array $size Width and height of the image.
*
* @return mixed An array of media query breakpoints.
*/
public function filter_sizes_attr( $sizes, $size ) {
if ( ! doing_filter( 'the_content' ) ) {
return $sizes;
}
$content_width = false;
if ( isset( $GLOBALS['content_width'] ) ) {
$content_width = $GLOBALS['content_width'];
}
if ( ! $content_width ) {
$content_width = 1000;
}
if ( is_array( $size ) && $size[0] < $content_width ) {
return $sizes;
}
return sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $content_width );
}
/**
* This filter will replace all the images retrieved via "wp_get_image" type of functions.
*
* @param array $image The filtered value.
* @param int $attachment_id The related attachment id.
* @param array|string $size This could be the name of the thumbnail size or an array of custom dimensions.
*
* @return array
*/
public function filter_image_downsize( $image, $attachment_id, $size ) {
$image_url = wp_get_attachment_url( $attachment_id );
if ( Optml_Media_Offload::is_uploaded_image( $image_url ) ) {
return $image;
}
if ( $image_url === false ) {
return $image;
}
$image_meta = wp_get_attachment_metadata( $attachment_id );
$image_args = self::image_sizes();
// default size
$sizes = [
'width' => isset( $image_meta['width'] ) ? intval( $image_meta['width'] ) : false,
'height' => isset( $image_meta['height'] ) ? intval( $image_meta['height'] ) : false,
];
switch ( $size ) {
case is_array( $size ):
$width = isset( $size[0] ) ? (int) $size[0] : false;
$height = isset( $size[1] ) ? (int) $size[1] : false;
if ( ! $width || ! $height ) {
break;
}
$image_resized = image_resize_dimensions( $sizes['width'], $sizes['height'], $width, $height );
if ( $image_resized ) {
$width = $image_resized[6];
$height = $image_resized[7];
} else {
$width = $image_meta['width'];
$height = $image_meta['height'];
}
list( $sizes['width'], $sizes['height'] ) = image_constrain_size_for_editor( $width, $height, $size );
break;
case 'full' !== $size && isset( $image_args[ $size ] ):
$image_resized = image_resize_dimensions( $sizes['width'], $sizes['height'], $image_args[ $size ]['width'], $image_args[ $size ]['height'], $image_args[ $size ]['crop'] );
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image.
$sizes['width'] = $image_resized[6];
$sizes['height'] = $image_resized[7];
}
list( $sizes['width'], $sizes['height'] ) = image_constrain_size_for_editor( $sizes['width'], $sizes['height'], $size, 'display' );
$sizes['resize'] = $this->to_optml_crop( $image_args[ $size ]['crop'] );
break;
}
$image_url = $this->strip_image_size_from_url( $image_url );
$new_url = apply_filters( 'optml_content_url', $image_url, $sizes );
if ( $new_url === $image_url ) {
return $image;
}
return [
$new_url,
$sizes['width'],
$sizes['height'],
$size === 'full',
];
}
/**
* Throw error on object clone
*
* The whole idea of the singleton design pattern is that there is a single
* object therefore, we don't want the object to be cloned.
*
* @codeCoverageIgnore
* @access public
* @since 1.0.0
* @return void
*/
public function __clone() {
// Cloning instances of the class is forbidden.
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' );
}
/**
* Disable unserializing of the class
*
* @codeCoverageIgnore
* @access public
* @since 1.0.0
* @return void
*/
public function __wakeup() {
// Unserializing instances of the class is forbidden.
_doing_it_wrong( __FUNCTION__, esc_html__( 'Cheatin’ huh?', 'optimole-wp' ), '1.0.0' );
}
}