← All changes | classes/Optimization/CSSMinifier.php +7 -43 3.3 → 4.4 View file →

		@@ -6,50 +6,14 @@
6	6	defined( 'ABSPATH' ) || exit;
7	7
8	8	class CSSMinifier {
9	9
10		- public static function minify($input): string {
11		- if(trim($input) === "") {
12		- return $input;
13		- }
14		- $replaced = preg_replace(
15		- array(
16		- // Remove comment(s)
17		- '#("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\')|\/\*(?!\!)(?>.*?\*\/)|^\s*|\s*$#s',
18		- // Remove unused white-space(s)
19		- '#("(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\'|\/\*(?>.*?\*\/))|\s*+;\s*+(})\s*+|\s*+([*$~^|]?+=|[{};,>~]|\s(?![0-9\.])|!important\b)\s*+|([[(:])\s++|\s++([])])|\s++(:)\s*+(?!(?>[^{}"\']++|"(?:[^"\\\]++|\\\.)*+"|\'(?:[^\'\\\\]++|\\\.)*+\')*+{)|^\s++|\s++\z|(\s)\s+#si',
20		- // Replace `0(cm|em|ex|in|mm|pc|pt|px|vh|vw|%)` with `0`
21		- '#(?<=[\s:])(0)(cm|em|ex|in|mm|pc|pt|px|vh|vw|%)#si',
22		- // Replace `:0 0 0 0` with `:0`
23		- '#:(0\s+0|0\s+0\s+0\s+0)(?=[;\}]|\!important)#i',
24		- // Replace `background-position:0` with `background-position:0 0`
25		- '#(background-position):0(?=[;\}])#si',
26		- // Replace `0.6` with `.6`, but only when preceded by `:`, `,`, `-` or a white-space
27		- '#(?<=[\s:,\-])0+\.(\d+)#s',
28		- // Minify string value
29		- '#(\/\*(?>.*?\*\/))|(?<!content\:)([\'"])([a-z_][a-z0-9\-_]*?)\2(?=[\s\{\}\];,])#si',
30		- '#(\/\*(?>.*?\*\/))|(\burl\()([\'"])([^\s]+?)\3(\))#si',
31		- // Minify HEX color code
32		- '#(?<=[\s:,\-]\#)([a-f0-6]+)\1([a-f0-6]+)\2([a-f0-6]+)\3#i',
33		- // Replace `(border|outline):none` with `(border|outline):0`
34		- '#(?<=[\{;])(border|outline):none(?=[;\}\!])#',
35		- // Remove empty selector(s)
36		- '#(\/\*(?>.*?\*\/))|(^|[\{\}])(?:[^\s\{\}]+)\{\}#s'
37		- ),
38		- array(
39		- '$1',
40		- '$1$2$3$4$5$6$7',
41		- '$1',
42		- ':0',
43		- '$1:0 0',
44		- '.$1',
45		- '$1$3',
46		- '$1$2$4$5',
47		- '$1$2$3',
48		- '$1:0',
49		- '$1$2'
50		- ),
51		- $input);
52		- return str_replace('fill=none', '', $replaced); // fix for url("data:image/svg+xml,%3Csvg ... fill='none'
	10	+ public static function minify($css): string {
	11	+ $css = preg_replace('/\/\*(.*?)\*\//s', '', $css); // Remove comments
	12	+ $css = preg_replace('/\s+/', ' ', $css); // Remove whitespace
	13	+ $css = preg_replace('/;\s*/', ';', $css); // Remove spaces after semicolons
	14	+ $css = preg_replace('/: /', ':', $css); // Remove spaces after colons
	15	+ $css = preg_replace('/\s{2,}/', ' ', $css); // Remove multiple spaces
	16	+ return trim($css);
53	17	}
54	18
55	19	}