/home/arranoyd/magicraft/wp-content/plugins/wp-rocket/inc/front/lazyload.php
<?php
defined( 'ABSPATH' ) or die( 'Cheatin’ uh?' );
/**
* Add Lazy Load JavaScript in the header
* No jQuery or other library is required !!
*
* @since 1.3.5 It's possible to exclude LazyLoad process by used do_rocket_lazyload filter
* @since 1.1.0 This code is insert in head with inline script for more performance
* @since 1.0
*/
add_action( 'wp_head', 'rocket_lazyload_script', PHP_INT_MAX );
function rocket_lazyload_script() {
if ( ( ! get_rocket_option( 'lazyload' ) && ! get_rocket_option( 'lazyload_iframes' ) ) || ( ! apply_filters( 'do_rocket_lazyload', true ) && ! apply_filters( 'do_rocket_lazyload_iframes', true ) ) ) {
return;
}
$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
$lazyload_url = get_rocket_cdn_url( WP_ROCKET_FRONT_JS_URL . 'lazyload.' . WP_ROCKET_LAZYLOAD_JS_VERSION . $suffix . '.js', array( 'all', 'css_and_js', 'js' ) );
echo '<script data-no-minify="1" data-cfasync="false">(function(w,d){function a(){var b=d.createElement("script");b.async=!0;b.src="' . $lazyload_url .'";var a=d.getElementsByTagName("script")[0];a.parentNode.insertBefore(b,a)}w.attachEvent?w.attachEvent("onload",a):w.addEventListener("load",a,!1)})(window,document);</script>';
}
/**
* Replace Gravatar, thumbnails, images in post content and in widget text by LazyLoad
*
* @since 2.6 Add the get_image_tag filter
* @since 2.2 Better regex pattern in a replace_callback
* @since 1.3.5 It's possible to exclude LazyLoad process by used do_rocket_lazyload filter
* @since 1.2.0 It's possible to not lazyload an image with data-no-lazy attribute
* @since 1.1.0 Don't lazyload if the thumbnail has already been run through previously
* @since 1.0.1 Add priority of hooks at maximum later with PHP_INT_MAX
* @since 1.0
*/
add_filter( 'get_avatar' , 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'the_content' , 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'widget_text' , 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'get_image_tag' , 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'post_thumbnail_html' , 'rocket_lazyload_images', PHP_INT_MAX );
function rocket_lazyload_images( $html ) {
// Don't LazyLoad if process is stopped for these reasons
if ( ! get_rocket_option( 'lazyload' ) || ! apply_filters( 'do_rocket_lazyload', true ) || is_feed() || is_preview() || empty( $html ) || ( defined( 'DONOTLAZYLOAD' ) && DONOTLAZYLOAD ) || wp_script_is( 'twentytwenty-twentytwenty', 'enqueued' ) ) {
return $html;
}
$html = preg_replace_callback( '#<img([^>]*) src=("(?:[^"]+)"|\'(?:[^\']+)\'|(?:[^ >]+))([^>]*)>#', '__rocket_lazyload_replace_callback', $html );
return $html;
}
/**
* Used to check if we have to LazyLoad this or not
*
* @since 2.5.5 Don't apply LazyLoad on images from WP Retina x2
* @since 2.5 Don't apply LazyLoad on all images from LayerSlider
* @since 2.4.2 Don't apply LazyLoad on all images from Media Grid
* @since 2.3.11 Don't apply LazyLoad on all images from Timthumb
* @since 2.3.10 Don't apply LazyLoad on all images from Revolution Slider & Justified Image Grid
* @since 2.3.8 Don't apply LazyLoad on captcha from Really Simple CAPTCHA
* @since 2.2
*/
function __rocket_lazyload_replace_callback( $matches ) {
// Don't apply LazyLoad on images from WP Retina x2
if( function_exists( 'wr2x_picture_rewrite' ) ) {
if( wr2x_get_retina( trailingslashit( ABSPATH ) . wr2x_get_pathinfo_from_image_src( trim( $matches[2], '"' ) ) ) ) {
return $matches[0];
}
}
// TO DO - improve this code with a preg_match - it's ugly!!!!
if ( strpos( $matches[1] . $matches[3], 'data-no-lazy=' ) === false && strpos( $matches[1] . $matches[3], 'data-lazy-original=' ) === false && strpos( $matches[1] . $matches[3], 'data-lazy-src=' ) === false && strpos( $matches[1] . $matches[3], 'data-lazysrc=' ) === false && strpos( $matches[1] . $matches[3], 'data-src=' ) === false && strpos( $matches[1] . $matches[3], 'data-lazyload=' ) === false && strpos( $matches[1] . $matches[3], 'data-bgposition=' ) === false && strpos( $matches[2], '/wpcf7_captcha/' ) === false && strpos( $matches[2], 'timthumb.php?src' ) === false && strpos( $matches[1] . $matches[3], 'data-envira-src=' ) === false && strpos( $matches[1] . $matches[3], 'fullurl=' ) === false && strpos( $matches[1] . $matches[3], 'lazy-slider-img=' ) === false && strpos( $matches[1] . $matches[3], 'data-srcset=' ) === false && strpos( $matches[1] . $matches[3], 'class="ls-l' ) === false && strpos( $matches[1] . $matches[3], 'class="ls-bg' ) === false ) {
/**
* Filter the LazyLoad placeholder on src attribute
*
* @since 2.6
*
* @param string Output that will be printed
*/
$placeholder = apply_filters( 'rocket_lazyload_placeholder', 'data:image/gif;base64,R0lGODdhAQABAPAAAP///wAAACwAAAAAAQABAEACAkQBADs=' );
$html = sprintf( '<img%1$s src="%4$s" data-lazy-src=%2$s%3$s>', $matches[1], $matches[2], $matches[3], $placeholder );
$html_noscript = sprintf( '<noscript><img%1$s src=%2$s%3$s></noscript>', $matches[1], $matches[2], $matches[3] );
/**
* Filter the LazyLoad HTML output on images
*
* @since 2.3.8
*
* @param string $html Output that will be printed
*/
$html = apply_filters( 'rocket_lazyload_html', $html, true );
return $html . $html_noscript;
} else {
return $matches[0];
}
}
/**
* Replace WordPress smilies by Lazy Load
*
* @since 2.0 New system for replace smilies by Lazy Load
* @since 1.3.5 It's possible to exclude LazyLoad process by used do_rocket_lazyload filter
* @since 1.1.0 Don't lazy-load if the thumbnail has already been run through previously
* @since 1.0.1 Add priority of hooks at maximum later with PHP_INT_MAX
* @since 1.0
*/
add_action( 'init', 'rocket_lazyload_smilies' );
function rocket_lazyload_smilies() {
if ( ! get_rocket_option( 'lazyload' ) || ! apply_filters( 'do_rocket_lazyload', true, 'smilies' ) || ( defined( 'DONOTLAZYLOAD' ) && DONOTLAZYLOAD ) ) {
return;
}
remove_filter( 'the_content', 'convert_smilies' );
remove_filter( 'the_excerpt', 'convert_smilies' );
remove_filter( 'comment_text', 'convert_smilies', 20 );
add_filter( 'the_content', 'rocket_convert_smilies' );
add_filter( 'the_excerpt', 'rocket_convert_smilies' );
add_filter( 'comment_text', 'rocket_convert_smilies', 20 );
}
/**
* Convert text equivalent of smilies to images.
*
* @source convert_smilies() in /wp-includes/formattings.php
* @since 2.0
*/
function rocket_convert_smilies( $text ) {
global $wp_smiliessearch;
$output = '';
if ( get_option( 'use_smilies' ) && ! empty( $wp_smiliessearch ) ) {
// HTML loop taken from texturize function, could possible be consolidated
$textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); // capture the tags as well as in between
$stop = count( $textarr );// loop stuff
// Ignore proessing of specific tags
$tags_to_ignore = 'code|pre|style|script|textarea';
$ignore_block_element = '';
for ( $i = 0; $i < $stop; $i++ ) {
$content = $textarr[ $i ];
// If we're in an ignore block, wait until we find its closing tag
if ( '' == $ignore_block_element && preg_match( '/^<(' . $tags_to_ignore . ')>/', $content, $matches ) ) {
$ignore_block_element = $matches[1];
}
// If it's not a tag and not in ignore block
if ( '' == $ignore_block_element && strlen( $content ) > 0 && '<' != $content[0] ) {
$content = preg_replace_callback( $wp_smiliessearch, 'rocket_translate_smiley', $content );
}
// did we exit ignore block
if ( '' != $ignore_block_element && '</' . $ignore_block_element . '>' == $content ) {
$ignore_block_element = '';
}
$output .= $content;
}
} else {
// return default text.
$output = $text;
}
return $output;
}
/**
* Convert one smiley code to the icon graphic file equivalent.
*
* @source translate_smiley() in /wp-includes/formattings.php
* @since 2.0
*/
function rocket_translate_smiley( $matches ) {
global $wpsmiliestrans;
if ( count( $matches ) == 0 )
return '';
$smiley = trim( reset( $matches ) );
$img = $wpsmiliestrans[ $smiley ];
$matches = array();
$ext = preg_match( '/\.([^.]+)$/', $img, $matches ) ? strtolower( $matches[1] ) : false;
$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png' );
// Don't convert smilies that aren't images - they're probably emoji.
if ( ! in_array( $ext, $image_exts ) ) {
return $img;
}
/**
* Filter the Smiley image URL before it's used in the image element.
*
* @since 2.9.0
*
* @param string $smiley_url URL for the smiley image.
* @param string $img Filename for the smiley image.
* @param string $site_url Site URL, as returned by site_url().
*/
$src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() );
// Don't LazyLoad if process is stopped for these reasons
if ( ! is_feed() && ! is_preview() ) {
/** This filter is documented in inc/front/lazyload.php */
$placeholder = apply_filters( 'rocket_lazyload_placeholder', 'data:image/gif;base64,R0lGODdhAQABAPAAAP///wAAACwAAAAAAQABAEACAkQBADs=' );
return sprintf( ' <img src="%s" data-lazy-src="%s" alt="%s" class="wp-smiley" /> ', $placeholder, esc_url( $src_url ), esc_attr( $smiley ) );
} else {
return sprintf( ' <img src="%s" alt="%s" class="wp-smiley" /> ', esc_url( $src_url ), esc_attr( $smiley ) );
}
}
/**
* Replace iframes by LazyLoad
*
* @since 2.6
*/
add_filter( 'rocket_buffer', 'rocket_lazyload_iframes', PHP_INT_MAX );
function rocket_lazyload_iframes( $html ) {
// Don't LazyLoad if process is stopped for these reasons
if ( ! get_rocket_option( 'lazyload_iframes' ) || ! apply_filters( 'do_rocket_lazyload_iframes', true ) || is_feed() || is_preview() || empty( $html ) || ( defined( 'DONOTLAZYLOAD' ) && DONOTLAZYLOAD ) ) {
return $html;
}
$matches = array();
preg_match_all( '/<iframe\s+.*?>/', $html, $matches );
foreach ( $matches[0] as $k=>$iframe ) {
// Don't mess with the Gravity Forms ajax iframe
if ( strpos( $iframe, 'gform_ajax_frame' ) ) {
continue;
}
// Don't lazyload if iframe has data-no-lazy attribute
if ( strpos( $iframe, 'data-no-lazy=' ) ) {
continue;
}
/** This filter is documented in inc/front/lazyload.php */
$placeholder = apply_filters( 'rocket_lazyload_placeholder', 'data:image/gif;base64,R0lGODdhAQABAPAAAP///wAAACwAAAAAAQABAEACAkQBADs=' );
$iframe = preg_replace( '/<iframe(.*?)src=/is', '<iframe$1src="' . $placeholder . '" data-lazy-src=', $iframe );
$html = str_replace( $matches[0][ $k ], $iframe, $html );
/**
* Filter the LazyLoad HTML output on iframes
*
* @since 2.6
*
* @param array $html Output that will be printed
*/
$html = apply_filters( 'rocket_lazyload_iframe_html', $html );
}
return $html;
}
/**
* Check if we need to exclude LazyLoad on specific posts
*
* @since 2.5
*/
add_action( 'wp', '__rocket_deactivate_lazyload_on_specific_posts' );
function __rocket_deactivate_lazyload_on_specific_posts() {
if ( is_rocket_post_excluded_option( 'lazyload' ) ) {
add_filter( 'do_rocket_lazyload', '__return_false' );
}
if ( is_rocket_post_excluded_option( 'lazyload_iframes' ) ) {
add_filter( 'do_rocket_lazyload_iframes', '__return_false' );
}
}
/**
* Compatibility with images with srcset attribute
*
* @author Remy Perona
*
* @since 2.8 Also add sizes to the data-lazy-* attributes to prevent error in W3C validator
* @since 2.7
*
*/
add_filter( 'rocket_lazyload_html', '__rocket_lazyload_on_srcset' );
function __rocket_lazyload_on_srcset( $html ) {
if( preg_match( '/srcset=("(?:[^"]+)"|\'(?:[^\']+)\'|(?:[^ >]+))/i', $html ) ) {
$html = str_replace( 'srcset=', 'data-lazy-srcset=', $html );
}
if( preg_match( '/sizes=("(?:[^"]+)"|\'(?:[^\']+)\'|(?:[^ >]+))/i', $html ) ) {
$html = str_replace( 'sizes=', 'data-lazy-sizes=', $html );
}
return $html;
}