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<?php
/**
* The class to operate media data.
*
* @since 1.4
* @since 1.5 Moved into /inc
* @package Core
* @subpackage Core/inc
* @author LiteSpeed Technologies <info@litespeedtech.com>
*/
namespace LiteSpeed;
defined( 'WPINC' ) || exit;
class Media extends Root {
const LOG_TAG = '📺';
const LIB_FILE_IMG_LAZYLOAD = 'assets/js/lazyload.min.js';
private $content;
private $_wp_upload_dir;
/**
* Init
*
* @since 1.4
*/
public function __construct() {
Debug2::debug2( '[Media] init' );
$this->_wp_upload_dir = wp_upload_dir();
}
/**
* Init optm features
*
* @since 3.0
* @access public
*/
public function init() {
if ( is_admin() ) {
return;
}
// Due to ajax call doesn't send correct accept header, have to limit webp to HTML only
if ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_IMG_OPTM_WEBP ) ) {
if ( $this->webp_support() ) {
// Hook to srcset
if ( function_exists( 'wp_calculate_image_srcset' ) ) {
add_filter( 'wp_calculate_image_srcset', array( $this, 'webp_srcset' ), 988 );
}
// Hook to mime icon
// add_filter( 'wp_get_attachment_image_src', array( $this, 'webp_attach_img_src' ), 988 );// todo: need to check why not
// add_filter( 'wp_get_attachment_url', array( $this, 'webp_url' ), 988 ); // disabled to avoid wp-admin display
}
}
if ( $this->conf( Base::O_MEDIA_LAZY ) && ! $this->cls( 'Metabox' )->setting( 'litespeed_no_image_lazy' ) ) {
self::debug( 'Suppress default WP lazyload' );
add_filter( 'wp_lazy_loading_enabled', '__return_false' );
}
/**
* Replace gravatar
* @since 3.0
*/
$this->cls( 'Avatar' );
add_filter( 'litespeed_buffer_finalize', array( $this, 'finalize' ), 4 );
}
/**
* Adjust WP default JPG quality
*
* @since 3.0
* @access public
*/
public function adjust_jpg_quality( $quality ) {
$v = $this->conf( Base::O_IMG_OPTM_JPG_QUALITY );
if ( $v ) {
return $v;
}
return $quality;
}
/**
* Register admin menu
*
* @since 1.6.3
* @access public
*/
public function after_admin_init() {
/**
* JPG quality control
* @since 3.0
*/
add_filter( 'jpeg_quality', array( $this, 'adjust_jpg_quality' ) );
add_filter( 'manage_media_columns', array( $this, 'media_row_title' ) );
add_filter( 'manage_media_custom_column', array( $this, 'media_row_actions' ), 10, 2 );
add_action( 'litespeed_media_row', array( $this, 'media_row_con' ) );
// Hook to attachment delete action
add_action( 'delete_attachment', __CLASS__ . '::delete_attachment' );
}
/**
* Media delete action hook
*
* @since 2.4.3
* @access public
*/
public static function delete_attachment( $post_id ) {
if ( ! Data::cls()->tb_exist( 'img_optm' ) ) {
return;
}
self::debug( 'delete_attachment [pid] ' . $post_id );
Img_Optm::cls()->reset_row( $post_id );
}
/**
* Return media file info if exists
*
* This is for remote attachment plugins
*
* @since 2.9.8
* @access public
*/
public function info( $short_file_path, $post_id ) {
$real_file = $this->_wp_upload_dir[ 'basedir' ] . '/' . $short_file_path;
if ( file_exists( $real_file ) ) {
return array(
'url' => $this->_wp_upload_dir[ 'baseurl' ] . '/' . $short_file_path,
'md5' => md5_file( $real_file ),
'size' => filesize( $real_file ),
);
}
/**
* WP Stateless compatibility #143 https://github.com/litespeedtech/lscache_wp/issues/143
* @since 2.9.8
* @return array( 'url', 'md5', 'size' )
*/
$info = apply_filters( 'litespeed_media_info', array(), $short_file_path, $post_id );
if ( ! empty( $info[ 'url' ] ) && ! empty( $info[ 'md5' ] ) && ! empty( $info[ 'size' ] ) ) {
return $info;
}
return false;
}
/**
* Delete media file
*
* @since 2.9.8
* @access public
*/
public function del( $short_file_path, $post_id ) {
$real_file = $this->_wp_upload_dir[ 'basedir' ] . '/' . $short_file_path;
if ( file_exists( $real_file ) ) {
unlink( $real_file );
self::debug( 'deleted ' . $real_file );
}
do_action( 'litespeed_media_del', $short_file_path, $post_id );
}
/**
* Rename media file
*
* @since 2.9.8
* @access public
*/
public function rename( $short_file_path, $short_file_path_new, $post_id ) {
$real_file = $this->_wp_upload_dir[ 'basedir' ] . '/' . $short_file_path;
$real_file_new = $this->_wp_upload_dir[ 'basedir' ] . '/' . $short_file_path_new;
if ( file_exists( $real_file ) ) {
rename( $real_file, $real_file_new );
self::debug( 'renamed ' . $real_file . ' to ' . $real_file_new );
}
do_action( 'litespeed_media_rename', $short_file_path, $short_file_path_new, $post_id );
}
/**
* Media Admin Menu -> Image Optimization Column Title
*
* @since 1.6.3
* @access public
*/
public function media_row_title( $posts_columns ) {
$posts_columns[ 'imgoptm' ] = __( 'LiteSpeed Optimization', 'litespeed-cache' );
return $posts_columns;
}
/**
* Media Admin Menu -> Image Optimization Column
*
* @since 1.6.2
* @access public
*/
public function media_row_actions( $column_name, $post_id ) {
if ( $column_name !== 'imgoptm' ) {
return;
}
do_action( 'litespeed_media_row', $post_id );
}
/**
* Display image optm info
*
* @since 3.0
*/
public function media_row_con( $post_id ) {
$att_info = wp_get_attachment_metadata( $post_id );
if ( empty( $att_info[ 'file' ] ) ) {
return;
}
$short_path = $att_info[ 'file' ];
$size_meta = get_post_meta( $post_id, Img_Optm::DB_SIZE, true );
echo '<p>';
// Original image info
if ( $size_meta && ! empty ( $size_meta[ 'ori_saved' ] ) ) {
$percent = ceil( $size_meta[ 'ori_saved' ] * 100 / $size_meta[ 'ori_total' ] );
$extension = pathinfo( $short_path, PATHINFO_EXTENSION );
$bk_file = substr( $short_path, 0, -strlen( $extension ) ) . 'bk.' . $extension;
$bk_optm_file = substr( $short_path, 0, -strlen( $extension ) ) . 'bk.optm.' . $extension;
$link = Utility::build_url( Router::ACTION_IMG_OPTM, 'orig' . $post_id );
$desc = false;
$cls = '';
if ( $this->info( $bk_file, $post_id ) ) {
$curr_status = __( '(optm)', 'litespeed-cache' );
$desc = __( 'Currently using optimized version of file.', 'litespeed-cache' ) . ' ' . __( 'Click to switch to original (unoptimized) version.', 'litespeed-cache' );
}
elseif ( $this->info( $bk_optm_file, $post_id ) ) {
$cls .= ' litespeed-warning';
$curr_status = __( '(non-optm)', 'litespeed-cache' );
$desc = __( 'Currently using original (unoptimized) version of file.', 'litespeed-cache' ) . ' ' . __( 'Click to switch to optimized version.', 'litespeed-cache' );
}
echo GUI::pie_tiny( $percent, 24,
sprintf( __( 'Original file reduced by %1$s (%2$s)', 'litespeed-cache' ),
$percent . '%',
Utility::real_size( $size_meta[ 'ori_saved' ] )
) , 'left'
);
echo sprintf( __( 'Orig saved %s', 'litespeed-cache' ), $percent . '%' );
if ( $desc ) {
echo sprintf( ' <a href="%1$s" class="litespeed-media-href %2$s" data-balloon-pos="left" data-balloon-break aria-label="%3$s">%4$s</a>', $link, $cls, $desc, $curr_status );
}
else {
echo sprintf(
' <span class="litespeed-desc" data-balloon-pos="left" data-balloon-break aria-label="%1$s">%2$s</span>',
__( 'Using optimized version of file. ', 'litespeed-cache' ) . ' ' . __( 'No backup of original file exists.', 'litespeed-cache' ),
__( '(optm)', 'litespeed-cache' )
);
}
}
elseif ( $size_meta && $size_meta[ 'ori_saved' ] === 0 ){
echo GUI::pie_tiny( 0, 24,
__( 'Congratulation! Your file was already optimized', 'litespeed-cache' ),
'left'
);
echo sprintf( __( 'Orig %s', 'litespeed-cache' ), '<span class="litespeed-desc">' . __( '(no savings)', 'litespeed-cache' ) . '</span>' );
}
else {
echo __( 'Orig', 'litespeed-cache' ) . '<span class="litespeed-left10">—</span>';
}
echo '</p>';
echo '<p>';
// WebP info
if ( $size_meta && ! empty ( $size_meta[ 'webp_saved' ] ) ) {
$percent = ceil( $size_meta[ 'webp_saved' ] * 100 / $size_meta[ 'webp_total' ] );
$link = Utility::build_url( Router::ACTION_IMG_OPTM, 'webp' . $post_id );
$desc = false;
$cls = '';
if ( $this->info( $short_path . '.webp', $post_id ) ) {
$curr_status = __( '(optm)', 'litespeed-cache' );
$desc = __( 'Currently using optimized version of WebP file.', 'litespeed-cache' ) . ' ' . __( 'Click to switch to original (unoptimized) version.', 'litespeed-cache' );
}
elseif ( $this->info( $short_path . '.optm.webp', $post_id ) ) {
$cls .= ' litespeed-warning';
$curr_status = __( '(non-optm)', 'litespeed-cache' );
$desc = __( 'Currently using original (unoptimized) version of WebP file.', 'litespeed-cache' ) . ' ' . __( 'Click to switch to optimized version.', 'litespeed-cache' );
}
echo GUI::pie_tiny( $percent, 24,
sprintf( __( 'WebP file reduced by %1$s (%2$s)', 'litespeed-cache' ),
$percent . '%',
Utility::real_size( $size_meta[ 'webp_saved' ] )
) , 'left'
);
echo sprintf( __( 'WebP saved %s', 'litespeed-cache' ), $percent . '%' );
if ( $desc ) {
echo sprintf( ' <a href="%1$s" class="litespeed-media-href %2$s" data-balloon-pos="left" data-balloon-break aria-label="%3$s">%4$s</a>', $link, $cls, $desc, $curr_status );
}
else {
echo sprintf(
' <span class="litespeed-desc" data-balloon-pos="left" data-balloon-break aria-label="%1$s">%2$s</span>',
__( 'Using optimized version of file. ', 'litespeed-cache' ) . ' ' . __( 'No backup of unoptimized WebP file exists.', 'litespeed-cache' ),
__( '(optm)', 'litespeed-cache' )
);
}
} else {
echo __( 'WebP', 'litespeed-cache' ) . '<span class="litespeed-left10">—</span>';
}
echo '</p>';
// Delete row btn
if ( $size_meta ) {
echo sprintf( '<div class="row-actions"><span class="delete"><a href="%1$s" class="">%2$s</a></span></div>',
Utility::build_url( Router::ACTION_IMG_OPTM, Img_Optm::TYPE_RESET_ROW, false, null, array( 'id' => $post_id ) ),
__( 'Restore from backup', 'litespeed-cache' )
);
echo '</div>';
}
}
/**
* Get wp size info
*
* NOTE: this is not used because it has to be after admin_init
*
* @since 1.6.2
* @return array $sizes Data for all currently-registered image sizes.
*/
public function get_image_sizes() {
global $_wp_additional_image_sizes;
$sizes = array();
foreach ( get_intermediate_image_sizes() as $_size ) {
if ( in_array( $_size, array( 'thumbnail', 'medium', 'medium_large', 'large' ) ) ) {
$sizes[ $_size ][ 'width' ] = get_option( $_size . '_size_w' );
$sizes[ $_size ][ 'height' ] = get_option( $_size . '_size_h' );
$sizes[ $_size ][ 'crop' ] = (bool) get_option( $_size . '_crop' );
} elseif ( isset( $_wp_additional_image_sizes[ $_size ] ) ) {
$sizes[ $_size ] = array(
'width' => $_wp_additional_image_sizes[ $_size ][ 'width' ],
'height' => $_wp_additional_image_sizes[ $_size ][ 'height' ],
'crop' => $_wp_additional_image_sizes[ $_size ][ 'crop' ]
);
}
}
return $sizes;
}
/**
* Exclude role from optimization filter
*
* @since 1.6.2
* @access public
*/
public function webp_support() {
if ( ! empty( $_SERVER[ 'HTTP_ACCEPT' ] ) && strpos( $_SERVER[ 'HTTP_ACCEPT' ], 'image/webp' ) !== false ) {
return true;
}
if ( ! empty( $_SERVER[ 'HTTP_USER_AGENT' ] ) ) {
if ( strpos( $_SERVER[ 'HTTP_USER_AGENT' ], 'Page Speed' ) !== false ) {
return true;
}
if ( preg_match( "/iPhone OS (\d+)_/i", $_SERVER[ 'HTTP_USER_AGENT' ], $matches ) ) {
$lscwp_ios_version = $matches[1];
if ($lscwp_ios_version >= 14){
return true;
}
}
}
return false;
}
/**
* Run lazy load process
* NOTE: As this is after cache finalized, can NOT set any cache control anymore
*
* Only do for main page. Do NOT do for esi or dynamic content.
*
* @since 1.4
* @access public
* @return string The buffer
*/
public function finalize( $content ) {
if ( defined( 'LITESPEED_NO_LAZY' ) ) {
Debug2::debug2( '[Media] bypass: NO_LAZY const' );
return $content;
}
if ( ! defined( 'LITESPEED_IS_HTML' ) ) {
Debug2::debug2( '[Media] bypass: Not frontend HTML type' );
return $content;
}
if ( ! Control::is_cacheable() ) {
self::debug( 'bypass: Not cacheable' );
return $content;
}
self::debug( 'finalize' );
$this->content = $content;
$this->_finalize();
return $this->content;
}
/**
* Run lazyload replacement for images in buffer
*
* @since 1.4
* @access private
*/
private function _finalize() {
/**
* Use webp for optimized images
* @since 1.6.2
*/
if ( ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_IMG_OPTM_WEBP ) ) && $this->webp_support() ) {
$this->content = $this->_replace_buffer_img_webp( $this->content );
}
/**
* Check if URI is excluded
* @since 3.0
*/
$excludes = $this->conf( Base::O_MEDIA_LAZY_URI_EXC );
if ( ! defined( 'LITESPEED_GUEST_OPTM' ) ) {
$result = Utility::str_hit_array( $_SERVER[ 'REQUEST_URI' ], $excludes );
if ( $result ) {
self::debug( 'bypass lazyload: hit URI Excludes setting: ' . $result );
return;
}
}
$cfg_lazy = ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_LAZY ) ) && ! $this->cls( 'Metabox' )->setting( 'litespeed_no_image_lazy' );
$cfg_iframe_lazy = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_IFRAME_LAZY );
$cfg_js_delay = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_OPTM_JS_DEFER ) == 2;
$cfg_trim_noscript = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_OPTM_NOSCRIPT_RM );
$cfg_vpi = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_VPI );
if ( $cfg_lazy ) {
if ( $cfg_vpi ) {
add_filter( 'litespeed_media_lazy_img_excludes', array( $this->cls( 'Metabox' ), 'lazy_img_excludes' ) );
}
list( $src_list, $html_list, $placeholder_list ) = $this->_parse_img();
$html_list_ori = $html_list;
}
else {
self::debug( 'lazyload disabled' );
}
// image lazy load
if ( $cfg_lazy ) {
$__placeholder = Placeholder::cls();
foreach ( $html_list as $k => $v ) {
$size = $placeholder_list[ $k ];
$src = $src_list[ $k ];
$html_list[ $k ] = $__placeholder->replace( $v, $src, $size );
}
}
if ( $cfg_lazy ) {
$this->content = str_replace( $html_list_ori, $html_list, $this->content );
}
// iframe lazy load
if ( $cfg_iframe_lazy ) {
$html_list = $this->_parse_iframe();
$html_list_ori = $html_list;
foreach ( $html_list as $k => $v ) {
$snippet = $cfg_trim_noscript ? '' : '<noscript>' . $v . '</noscript>';
if ( $cfg_js_delay ) {
$v = str_replace( ' src=', ' data-litespeed-src=', $v );
}
else {
$v = str_replace( ' src=', ' data-src=', $v );
}
$v = str_replace( '<iframe ', '<iframe data-lazyloaded="1" src="about:blank" ', $v );
$snippet = $v . $snippet;
$html_list[ $k ] = $snippet;
}
$this->content = str_replace( $html_list_ori, $html_list, $this->content );
}
// Include lazyload lib js and init lazyload
if ( $cfg_lazy || $cfg_iframe_lazy ) {
$lazy_lib = '<script data-no-optimize="1">' . File::read( LSCWP_DIR . self::LIB_FILE_IMG_LAZYLOAD ) . '</script>';
$this->content = str_replace( '</body>', $lazy_lib . '</body>', $this->content );
}
}
/**
* Parse img src
*
* @since 1.4
* @access private
* @return array All the src & related raw html list
*/
private function _parse_img() {
/**
* Exclude list
* @since 1.5
* @since 2.7.1 Changed to array
*/
$excludes = apply_filters( 'litespeed_media_lazy_img_excludes', $this->conf( Base::O_MEDIA_LAZY_EXC ) );
$cls_excludes = apply_filters( 'litespeed_media_lazy_img_cls_excludes', $this->conf( Base::O_MEDIA_LAZY_CLS_EXC ) );
$cls_excludes[] = 'skip-lazy'; // https://core.trac.wordpress.org/ticket/44427
$src_list = array();
$html_list = array();
$placeholder_list = array();
$content = preg_replace( array( '#<!--.*-->#sU', '#<noscript([^>]*)>.*</noscript>#isU' ), '', $this->content );
/**
* Exclude parent classes
* @since 3.0
*/
$parent_cls_exc = apply_filters( 'litespeed_media_lazy_img_parent_cls_excludes', $this->conf( Base::O_MEDIA_LAZY_PARENT_CLS_EXC ) );
if ( $parent_cls_exc ) {
Debug2::debug2( '[Media] Lazyload Class excludes', $parent_cls_exc );
foreach ( $parent_cls_exc as $v ) {
$content = preg_replace( '#<(\w+) [^>]*class=(\'|")[^\'"]*' . preg_quote( $v, '#' ) . '[^\'"]*\2[^>]*>.*</\1>#sU', '', $content );
}
}
preg_match_all( '#<img \s*([^>]+)/?>#isU', $content, $matches, PREG_SET_ORDER );
foreach ( $matches as $match ) {
$attrs = Utility::parse_attr( $match[ 1 ] );
if ( empty( $attrs[ 'src' ] ) ) {
continue;
}
/**
* Add src validation to bypass base64 img src
* @since 1.6
*/
if ( strpos( $attrs[ 'src' ], 'base64' ) !== false || substr( $attrs[ 'src' ], 0, 5 ) === 'data:' ) {
Debug2::debug2( '[Media] lazyload bypassed base64 img' );
continue;
}
Debug2::debug2( '[Media] lazyload found: ' . $attrs[ 'src' ] );
if ( ! empty( $attrs[ 'data-no-lazy' ] ) || ! empty( $attrs[ 'data-skip-lazy' ] ) || ! empty( $attrs[ 'data-lazyloaded' ] ) || ! empty( $attrs[ 'data-src' ] ) || ! empty( $attrs[ 'data-srcset' ] ) ) {
Debug2::debug2( '[Media] bypassed' );
continue;
}
if ( ! empty( $attrs[ 'class' ] ) && $hit = Utility::str_hit_array( $attrs[ 'class' ], $cls_excludes ) ) {
Debug2::debug2( '[Media] lazyload image cls excludes [hit] ' . $hit );
continue;
}
/**
* Exclude from lazyload by setting
* @since 1.5
*/
if ( $excludes && Utility::str_hit_array( $attrs[ 'src' ], $excludes ) ) {
Debug2::debug2( '[Media] lazyload image exclude ' . $attrs[ 'src' ] );
continue;
}
/**
* Excldues invalid image src from buddypress avatar crop
* @see https://wordpress.org/support/topic/lazy-load-breaking-buddypress-upload-avatar-feature
* @since 3.0
*/
if ( strpos( $attrs[ 'src' ], '{' ) !== false ) {
Debug2::debug2( '[Media] image src has {} ' . $attrs[ 'src' ] );
continue;
}
// to avoid multiple replacement
if ( in_array( $match[ 0 ], $html_list ) ) {
continue;
}
// Add missing dimensions
if ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_MEDIA_ADD_MISSING_SIZES ) ) {
if ( empty( $attrs[ 'width' ] ) || $attrs[ 'width' ] == 'auto' || empty( $attrs[ 'height' ] ) || $attrs[ 'height' ] == 'auto' ) {
self::debug( '⚠️ Missing sizes for image [src] ' . $attrs[ 'src' ] );
$dimensions = $this->_detect_dimensions( $attrs[ 'src' ] );
if ( $dimensions ) {
$ori_width = $dimensions[ 0 ];
$ori_height = $dimensions[ 1 ];
// Calculate height based on width
if ( ! empty( $attrs[ 'width' ] ) && $attrs[ 'width' ] != 'auto' ) {
$ori_height = intval( $ori_height * $attrs[ 'width' ] / $ori_width );
}
elseif ( ! empty( $attrs[ 'height' ] ) && $attrs[ 'height' ] != 'auto' ) {
$ori_width = intval( $ori_width * $attrs[ 'height' ] / $ori_height );
}
$attrs[ 'width' ] = $ori_width;
$attrs[ 'height' ] = $ori_height;
$new_html = preg_replace( '#(width|height)=(["\'])[^\2]*\2#', '', $match[ 0 ] );
$new_html = str_replace( '<img ', '<img width="' . $attrs[ 'width' ] . '" height="' . $attrs[ 'height' ] . '" ', $new_html );
self::debug( 'Add missing sizes ' . $attrs[ 'width' ] . 'x' . $attrs[ 'height' ] . ' to ' . $attrs[ 'src' ] );
$this->content = str_replace( $match[ 0 ], $new_html, $this->content );
$match[ 0 ] = $new_html;
}
}
}
$placeholder = false;
if ( ! empty( $attrs[ 'width' ] ) && $attrs[ 'width' ] != 'auto' && ! empty( $attrs[ 'height' ] ) && $attrs[ 'height' ] != 'auto' ) {
$placeholder = $attrs[ 'width' ] . 'x' . $attrs[ 'height' ];
}
$src_list[] = $attrs[ 'src' ];
$html_list[] = $match[ 0 ];
$placeholder_list[] = $placeholder;
}
return array( $src_list, $html_list, $placeholder_list );
}
/**
* Detect the original sizes
*
* @since 4.0
*/
private function _detect_dimensions( $src ) {
if ( $pathinfo = Utility::is_internal_file( $src ) ) {
$src = $pathinfo[ 0 ];
}
elseif ( apply_filters( 'litespeed_media_ignore_remote_missing_sizes', false ) ) {
return false;
}
if ( substr( $src, 0, 2 ) == '//' ) $src = 'https:' . $src;
$sizes = getimagesize( $src );
if ( ! empty( $sizes[ 0 ] ) && ! empty( $sizes[ 1 ] ) ) {
return $sizes;
}
return false;
}
/**
* Parse iframe src
*
* @since 1.4
* @access private
* @return array All the src & related raw html list
*/
private function _parse_iframe() {
$cls_excludes = apply_filters( 'litespeed_media_iframe_lazy_cls_excludes', $this->conf( Base::O_MEDIA_IFRAME_LAZY_CLS_EXC ) );
$cls_excludes[] = 'skip-lazy'; // https://core.trac.wordpress.org/ticket/44427
$html_list = array();
$content = preg_replace( '#<!--.*-->#sU', '', $this->content );
/**
* Exclude parent classes
* @since 3.0
*/
$parent_cls_exc = apply_filters( 'litespeed_media_iframe_lazy_parent_cls_excludes', $this->conf( Base::O_MEDIA_IFRAME_LAZY_PARENT_CLS_EXC ) );
if ( $parent_cls_exc ) {
Debug2::debug2( '[Media] Iframe Lazyload Class excludes', $parent_cls_exc );
foreach ( $parent_cls_exc as $v ) {
$content = preg_replace( '#<(\w+) [^>]*class=(\'|")[^\'"]*' . preg_quote( $v, '#' ) . '[^\'"]*\2[^>]*>.*</\1>#sU', '', $content );
}
}
preg_match_all( '#<iframe \s*([^>]+)></iframe>#isU', $content, $matches, PREG_SET_ORDER );
foreach ( $matches as $match ) {
$attrs = Utility::parse_attr( $match[ 1 ] );
if ( empty( $attrs[ 'src' ] ) ) {
continue;
}
Debug2::debug2( '[Media] found iframe: ' . $attrs[ 'src' ] );
if ( ! empty( $attrs[ 'data-no-lazy' ] ) || ! empty( $attrs[ 'data-skip-lazy' ] ) || ! empty( $attrs[ 'data-lazyloaded' ] ) || ! empty( $attrs[ 'data-src' ] ) ) {
Debug2::debug2( '[Media] bypassed' );
continue;
}
if ( ! empty( $attrs[ 'class' ] ) && $hit = Utility::str_hit_array( $attrs[ 'class' ], $cls_excludes ) ) {
Debug2::debug2( '[Media] iframe lazyload cls excludes [hit] ' . $hit );
continue;
}
if ( apply_filters( 'litespeed_iframe_lazyload_exc', false, $attrs[ 'src' ] ) ) {
Debug2::debug2( '[Media] bypassed by filter' );
continue;
}
// to avoid multiple replacement
if ( in_array( $match[ 0 ], $html_list ) ) {
continue;
}
$html_list[] = $match[ 0 ];
}
return $html_list;
}
/**
* Replace image src to webp
*
* @since 1.6.2
* @access private
*/
private function _replace_buffer_img_webp( $content ) {
/**
* Added custom element & attribute support
* @since 2.2.2
*/
$webp_ele_to_check = $this->conf( Base::O_IMG_OPTM_WEBP_ATTR );
foreach ( $webp_ele_to_check as $v ) {
if ( ! $v || strpos( $v, '.' ) === false ) {
Debug2::debug2( '[Media] buffer_webp no . attribute ' . $v );
continue;
}
Debug2::debug2( '[Media] buffer_webp attribute ' . $v );
$v = explode( '.', $v );
$attr = preg_quote( $v[ 1 ], '#' );
if ( $v[ 0 ] ) {
$pattern = '#<' . preg_quote( $v[ 0 ], '#' ) . '([^>]+)' . $attr . '=([\'"])(.+)\2#iU';
}
else {
$pattern = '# ' . $attr . '=([\'"])(.+)\1#iU';
}
preg_match_all( $pattern, $content, $matches );
foreach ( $matches[ $v[ 0 ] ? 3 : 2 ] as $k2 => $url ) {
// Check if is a DATA-URI
if ( strpos( $url, 'data:image' ) !== false ) {
continue;
}
if ( ! $url2 = $this->replace_webp( $url ) ) {
continue;
}
if ( $v[ 0 ] ) {
$html_snippet = sprintf(
'<' . $v[ 0 ] . '%1$s' . $v[ 1 ] . '=%2$s',
$matches[ 1 ][ $k2 ],
$matches[ 2 ][ $k2 ] . $url2 . $matches[ 2 ][ $k2 ]
);
}
else {
$html_snippet = sprintf(
' ' . $v[ 1 ] . '=%1$s',
$matches[ 1 ][ $k2 ] . $url2 . $matches[ 1 ][ $k2 ]
);
}
$content = str_replace( $matches[ 0 ][ $k2 ], $html_snippet, $content );
}
}
// parse srcset
// todo: should apply this to cdn too
if ( ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_IMG_OPTM_WEBP_REPLACE_SRCSET ) ) && $this->webp_support() ) {
$content = Utility::srcset_replace( $content, array( $this, 'replace_webp' ) );
}
// Replace background-image
if ( ( defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( Base::O_IMG_OPTM_WEBP ) ) && $this->webp_support() ) {
$content = $this->replace_background_webp( $content );
}
return $content;
}
/**
* Replace background image
*
* @since 4.0
*/
public function replace_background_webp( $content ) {
Debug2::debug2( '[Media] Start replacing bakcground WebP.' );
// preg_match_all( '#background-image:(\s*)url\((.*)\)#iU', $content, $matches );
preg_match_all( '#url\(([^)]+)\)#iU', $content, $matches );
foreach ( $matches[ 1 ] as $k => $url ) {
// Check if is a DATA-URI
if ( strpos( $url, 'data:image' ) !== false ) {
continue;
}
/**
* Support quotes in src `background-image: url('src')`
* @since 2.9.3
*/
$url = trim( $url, '\'"' );
if ( ! $url2 = $this->replace_webp( $url ) ) {
continue;
}
// $html_snippet = sprintf( 'background-image:%1$surl(%2$s)', $matches[ 1 ][ $k ], $url2 );
$html_snippet = str_replace( $url, $url2, $matches[ 0 ][ $k ] );
$content = str_replace( $matches[ 0 ][ $k ], $html_snippet, $content );
}
return $content;
}
/**
* Replace internal image src to webp
*
* @since 1.6.2
* @access public
*/
public function replace_webp( $url ) {
Debug2::debug2( '[Media] webp replacing: ' . substr( $url, 0, 200 ) );
if ( substr( $url, -5 ) == '.webp' ) {
Debug2::debug2( '[Media] already webp' );
return false;
}
/**
* WebP API hook
* NOTE: As $url may contain query strings, WebP check will need to parse_url before appending .webp
* @since 2.9.5
* @see #751737 - API docs for WebP generation
*/
if ( apply_filters( 'litespeed_media_check_ori', Utility::is_internal_file( $url ), $url ) ) {
// check if has webp file
if ( apply_filters( 'litespeed_media_check_webp', Utility::is_internal_file( $url, 'webp' ), $url ) ) {
$url .= '.webp';
}
else {
Debug2::debug2( '[Media] -no WebP file, bypassed' );
return false;
}
}
else {
Debug2::debug2( '[Media] -no file, bypassed' );
return false;
}
Debug2::debug2( '[Media] - replaced to: ' . $url );
return $url;
}
/**
* Hook to wp_get_attachment_image_src
*
* @since 1.6.2
* @access public
* @param array $img The URL of the attachment image src, the width, the height
* @return array
*/
public function webp_attach_img_src( $img ) {
Debug2::debug2( '[Media] changing attach src: ' . $img[0] );
if ( $img && $url = $this->replace_webp( $img[ 0 ] ) ) {
$img[ 0 ] = $url;
}
return $img;
}
/**
* Try to replace img url
*
* @since 1.6.2
* @access public
* @param string $url
* @return string
*/
public function webp_url( $url ) {
if ( $url && $url2 = $this->replace_webp( $url ) ) {
$url = $url2;
}
return $url;
}
/**
* Hook to replace WP responsive images
*
* @since 1.6.2
* @access public
* @param array $srcs
* @return array
*/
public function webp_srcset( $srcs ) {
if ( $srcs ) {
foreach ( $srcs as $w => $data ) {
if( ! $url = $this->replace_webp( $data[ 'url' ] ) ) {
continue;
}
$srcs[ $w ][ 'url' ] = $url;
}
}
return $srcs;
}
}