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<?php
defined( 'ABSPATH' ) || exit;
/**
* Quick and dirty way to mostly minify CSS.
*/
if ( ! class_exists( 'Maxcoach_Minify' ) ) {
class Maxcoach_Minify {
public static function css( $css ) {
// Normalize whitespace.
$css = preg_replace( '/\s+/', ' ', $css );
// Remove spaces before and after comment.
$css = preg_replace( '/(\s+)(\/\*(.*?)\*\/)(\s+)/', '$2', $css );
// Remove comment blocks, everything between /* and */, unless.
// preserved with /*! ... */ or /** ... */
$css = preg_replace( '~/\*(?![\!|\*])(.*?)\*/~', '', $css );
// Remove ; before }.
$css = preg_replace( '/;(?=\s*})/', '', $css );
// Remove space after , : ; { } */ >.
$css = preg_replace( '/(,|:|;|\{|}|\*\/|>) /', '$1', $css );
// Remove space before , ; { } ( ) >.
$css = preg_replace( '/ (,|;|\{|}|\(|\)|>)/', '$1', $css );
// Strips leading 0 on decimal values (converts 0.5px into .5px).
$css = preg_replace( '/(:| )0\.([0-9]+)(%|em|ex|px|in|cm|mm|pt|pc)/i', '${1}.${2}${3}', $css );
// Strips units if value is 0 (converts 0px to 0).
$css = preg_replace( '/(:| )(\.?)0(%|em|ex|px|in|cm|mm|pt|pc)/i', '${1}0', $css );
// Converts all zeros value into short-hand.
$css = preg_replace( '/0 0 0 0/', '0', $css );
// Shorten 6-character hex color codes to 3-character where possible.
$css = preg_replace( '/#([a-f0-9])\\1([a-f0-9])\\2([a-f0-9])\\3/i', '#\1\2\3', $css );
return trim( $css );
}
}
}