initial commit
This commit is contained in:
@ -0,0 +1,156 @@
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<?php
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namespace LiteSpeed\Lib\CSS_MIN ;
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defined( 'WPINC' ) || exit ;
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class Colors
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{
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public static function getHexToNamedMap()
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{
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// Hex colors longer than named counterpart
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return array(
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'#f0ffff' => 'azure',
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'#f5f5dc' => 'beige',
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'#ffe4c4' => 'bisque',
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'#a52a2a' => 'brown',
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'#ff7f50' => 'coral',
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'#ffd700' => 'gold',
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'#808080' => 'gray',
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'#008000' => 'green',
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'#4b0082' => 'indigo',
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'#fffff0' => 'ivory',
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'#f0e68c' => 'khaki',
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'#faf0e6' => 'linen',
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'#800000' => 'maroon',
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'#000080' => 'navy',
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'#fdf5e6' => 'oldlace',
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'#808000' => 'olive',
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'#ffa500' => 'orange',
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'#da70d6' => 'orchid',
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'#cd853f' => 'peru',
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'#ffc0cb' => 'pink',
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'#dda0dd' => 'plum',
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'#800080' => 'purple',
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'#f00' => 'red',
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'#fa8072' => 'salmon',
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'#a0522d' => 'sienna',
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'#c0c0c0' => 'silver',
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'#fffafa' => 'snow',
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'#d2b48c' => 'tan',
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'#008080' => 'teal',
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'#ff6347' => 'tomato',
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'#ee82ee' => 'violet',
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'#f5deb3' => 'wheat'
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);
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}
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public static function getNamedToHexMap()
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{
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// Named colors longer than hex counterpart
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return array(
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'aliceblue' => '#f0f8ff',
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'antiquewhite' => '#faebd7',
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'aquamarine' => '#7fffd4',
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'black' => '#000',
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'blanchedalmond' => '#ffebcd',
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'blueviolet' => '#8a2be2',
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'burlywood' => '#deb887',
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'cadetblue' => '#5f9ea0',
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'chartreuse' => '#7fff00',
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'chocolate' => '#d2691e',
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'cornflowerblue' => '#6495ed',
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'cornsilk' => '#fff8dc',
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'darkblue' => '#00008b',
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'darkcyan' => '#008b8b',
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'darkgoldenrod' => '#b8860b',
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'darkgray' => '#a9a9a9',
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'darkgreen' => '#006400',
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'darkgrey' => '#a9a9a9',
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'darkkhaki' => '#bdb76b',
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'darkmagenta' => '#8b008b',
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'darkolivegreen' => '#556b2f',
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'darkorange' => '#ff8c00',
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'darkorchid' => '#9932cc',
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'darksalmon' => '#e9967a',
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'darkseagreen' => '#8fbc8f',
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'darkslateblue' => '#483d8b',
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'darkslategray' => '#2f4f4f',
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'darkslategrey' => '#2f4f4f',
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'darkturquoise' => '#00ced1',
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'darkviolet' => '#9400d3',
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'deeppink' => '#ff1493',
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'deepskyblue' => '#00bfff',
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'dodgerblue' => '#1e90ff',
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'firebrick' => '#b22222',
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'floralwhite' => '#fffaf0',
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'forestgreen' => '#228b22',
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'fuchsia' => '#f0f',
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'gainsboro' => '#dcdcdc',
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'ghostwhite' => '#f8f8ff',
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'goldenrod' => '#daa520',
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'greenyellow' => '#adff2f',
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'honeydew' => '#f0fff0',
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'indianred' => '#cd5c5c',
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'lavender' => '#e6e6fa',
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'lavenderblush' => '#fff0f5',
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'lawngreen' => '#7cfc00',
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'lemonchiffon' => '#fffacd',
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'lightblue' => '#add8e6',
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'lightcoral' => '#f08080',
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'lightcyan' => '#e0ffff',
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'lightgoldenrodyellow' => '#fafad2',
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'lightgray' => '#d3d3d3',
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'lightgreen' => '#90ee90',
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'lightgrey' => '#d3d3d3',
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'lightpink' => '#ffb6c1',
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'lightsalmon' => '#ffa07a',
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'lightseagreen' => '#20b2aa',
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'lightskyblue' => '#87cefa',
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'lightslategray' => '#778899',
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'lightslategrey' => '#778899',
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'lightsteelblue' => '#b0c4de',
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'lightyellow' => '#ffffe0',
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'limegreen' => '#32cd32',
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'mediumaquamarine' => '#66cdaa',
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'mediumblue' => '#0000cd',
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'mediumorchid' => '#ba55d3',
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'mediumpurple' => '#9370db',
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'mediumseagreen' => '#3cb371',
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'mediumslateblue' => '#7b68ee',
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'mediumspringgreen' => '#00fa9a',
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'mediumturquoise' => '#48d1cc',
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'mediumvioletred' => '#c71585',
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'midnightblue' => '#191970',
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'mintcream' => '#f5fffa',
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'mistyrose' => '#ffe4e1',
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'moccasin' => '#ffe4b5',
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'navajowhite' => '#ffdead',
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'olivedrab' => '#6b8e23',
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'orangered' => '#ff4500',
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'palegoldenrod' => '#eee8aa',
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'palegreen' => '#98fb98',
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'paleturquoise' => '#afeeee',
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'palevioletred' => '#db7093',
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'papayawhip' => '#ffefd5',
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'peachpuff' => '#ffdab9',
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'powderblue' => '#b0e0e6',
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'rebeccapurple' => '#663399',
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'rosybrown' => '#bc8f8f',
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'royalblue' => '#4169e1',
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'saddlebrown' => '#8b4513',
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'sandybrown' => '#f4a460',
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'seagreen' => '#2e8b57',
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'seashell' => '#fff5ee',
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'slateblue' => '#6a5acd',
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'slategray' => '#708090',
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'slategrey' => '#708090',
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'springgreen' => '#00ff7f',
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'steelblue' => '#4682b4',
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'turquoise' => '#40e0d0',
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'white' => '#fff',
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'whitesmoke' => '#f5f5f5',
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'yellow' => '#ff0',
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'yellowgreen' => '#9acd32'
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);
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}
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}
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@ -0,0 +1,866 @@
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<?php
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/*!
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* CssMin
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* Author: Tubal Martin - http://tubalmartin.me/
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* Repo: https://github.com/tubalmartin/YUI-CSS-compressor-PHP-port
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*
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* This is a PHP port of the CSS minification tool distributed with YUICompressor,
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* itself a port of the cssmin utility by Isaac Schlueter - http://foohack.com/
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* Permission is hereby granted to use the PHP version under the same
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* conditions as the YUICompressor.
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*/
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/*!
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* YUI Compressor
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* http://developer.yahoo.com/yui/compressor/
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* Author: Julien Lecomte - http://www.julienlecomte.net/
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* Copyright (c) 2013 Yahoo! Inc. All rights reserved.
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* The copyrights embodied in the content of this file are licensed
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* by Yahoo! Inc. under the BSD (revised) open source license.
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*/
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namespace LiteSpeed\Lib\CSS_MIN ;
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defined( 'WPINC' ) || exit ;
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class Minifier
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{
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const QUERY_FRACTION = '_CSSMIN_QF_';
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const COMMENT_TOKEN = '_CSSMIN_CMT_%d_';
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const COMMENT_TOKEN_START = '_CSSMIN_CMT_';
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const RULE_BODY_TOKEN = '_CSSMIN_RBT_%d_';
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const PRESERVED_TOKEN = '_CSSMIN_PTK_%d_';
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// Token lists
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private $comments = array();
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private $ruleBodies = array();
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private $preservedTokens = array();
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// Output options
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private $keepImportantComments = true;
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private $keepSourceMapComment = false;
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private $linebreakPosition = 0;
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// PHP ini limits
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private $raisePhpLimits;
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private $memoryLimit;
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private $maxExecutionTime = 60; // 1 min
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private $pcreBacktrackLimit;
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private $pcreRecursionLimit;
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// Color maps
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private $hexToNamedColorsMap;
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private $namedToHexColorsMap;
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// Regexes
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private $numRegex;
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private $charsetRegex = '/@charset [^;]+;/Si';
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private $importRegex = '/@import [^;]+;/Si';
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private $namespaceRegex = '/@namespace [^;]+;/Si';
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private $namedToHexColorsRegex;
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private $shortenOneZeroesRegex;
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private $shortenTwoZeroesRegex;
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private $shortenThreeZeroesRegex;
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private $shortenFourZeroesRegex;
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private $unitsGroupRegex = '(?:ch|cm|em|ex|gd|in|mm|px|pt|pc|q|rem|vh|vmax|vmin|vw|%)';
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/**
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* @param bool|int $raisePhpLimits If true, PHP settings will be raised if needed
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*/
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public function __construct($raisePhpLimits = true)
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{
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$this->raisePhpLimits = (bool) $raisePhpLimits;
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$this->memoryLimit = 128 * 1048576; // 128MB in bytes
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$this->pcreBacktrackLimit = 1000 * 1000;
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$this->pcreRecursionLimit = 500 * 1000;
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$this->hexToNamedColorsMap = Colors::getHexToNamedMap();
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$this->namedToHexColorsMap = Colors::getNamedToHexMap();
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$this->namedToHexColorsRegex = sprintf(
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'/([:,( ])(%s)( |,|\)|;|$)/Si',
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implode('|', array_keys($this->namedToHexColorsMap))
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);
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$this->numRegex = sprintf('-?\d*\.?\d+%s?', $this->unitsGroupRegex);
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$this->setShortenZeroValuesRegexes();
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}
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/**
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* Parses & minifies the given input CSS string
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* @param string $css
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* @return string
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*/
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public function run($css = '')
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{
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if (empty($css) || !is_string($css)) {
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return '';
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}
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$this->resetRunProperties();
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if ($this->raisePhpLimits) {
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$this->doRaisePhpLimits();
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}
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return $this->minify($css);
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}
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/**
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* Sets whether to keep or remove sourcemap special comment.
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* Sourcemap comments are removed by default.
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* @param bool $keepSourceMapComment
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*/
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public function keepSourceMapComment($keepSourceMapComment = true)
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{
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$this->keepSourceMapComment = (bool) $keepSourceMapComment;
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}
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/**
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* Sets whether to keep or remove important comments.
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* Important comments outside of a declaration block are kept by default.
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* @param bool $removeImportantComments
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*/
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public function removeImportantComments($removeImportantComments = true)
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{
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$this->keepImportantComments = !(bool) $removeImportantComments;
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}
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/**
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* Sets the approximate column after which long lines will be splitted in the output
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* with a linebreak.
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* @param int $position
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*/
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public function setLineBreakPosition($position)
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{
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$this->linebreakPosition = (int) $position;
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}
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/**
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* Sets the memory limit for this script
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* @param int|string $limit
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*/
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public function setMemoryLimit($limit)
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{
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$this->memoryLimit = Utils::normalizeInt($limit);
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}
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/**
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* Sets the maximum execution time for this script
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* @param int|string $seconds
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*/
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public function setMaxExecutionTime($seconds)
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{
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$this->maxExecutionTime = (int) $seconds;
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}
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/**
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* Sets the PCRE backtrack limit for this script
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* @param int $limit
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*/
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public function setPcreBacktrackLimit($limit)
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{
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$this->pcreBacktrackLimit = (int) $limit;
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}
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/**
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* Sets the PCRE recursion limit for this script
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* @param int $limit
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*/
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public function setPcreRecursionLimit($limit)
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{
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$this->pcreRecursionLimit = (int) $limit;
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}
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|
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/**
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* Builds regular expressions needed for shortening zero values
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*/
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private function setShortenZeroValuesRegexes()
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{
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$zeroRegex = '0'. $this->unitsGroupRegex;
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$numOrPosRegex = '('. $this->numRegex .'|top|left|bottom|right|center) ';
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$oneZeroSafeProperties = array(
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'(?:line-)?height',
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'(?:(?:min|max)-)?width',
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'top',
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'left',
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'background-position',
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'bottom',
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'right',
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'border(?:-(?:top|left|bottom|right))?(?:-width)?',
|
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'border-(?:(?:top|bottom)-(?:left|right)-)?radius',
|
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'column-(?:gap|width)',
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'margin(?:-(?:top|left|bottom|right))?',
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'outline-width',
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'padding(?:-(?:top|left|bottom|right))?'
|
||||
);
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||||
|
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// First zero regex
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||||
$regex = '/(^|;)('. implode('|', $oneZeroSafeProperties) .'):%s/Si';
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||||
$this->shortenOneZeroesRegex = sprintf($regex, $zeroRegex);
|
||||
|
||||
// Multiple zeroes regexes
|
||||
$regex = '/(^|;)(margin|padding|border-(?:width|radius)|background-position):%s/Si';
|
||||
$this->shortenTwoZeroesRegex = sprintf($regex, $numOrPosRegex . $zeroRegex);
|
||||
$this->shortenThreeZeroesRegex = sprintf($regex, $numOrPosRegex . $numOrPosRegex . $zeroRegex);
|
||||
$this->shortenFourZeroesRegex = sprintf($regex, $numOrPosRegex . $numOrPosRegex . $numOrPosRegex . $zeroRegex);
|
||||
}
|
||||
|
||||
/**
|
||||
* Resets properties whose value may change between runs
|
||||
*/
|
||||
private function resetRunProperties()
|
||||
{
|
||||
$this->comments = array();
|
||||
$this->ruleBodies = array();
|
||||
$this->preservedTokens = array();
|
||||
}
|
||||
|
||||
/**
|
||||
* Tries to configure PHP to use at least the suggested minimum settings
|
||||
* @return void
|
||||
*/
|
||||
private function doRaisePhpLimits()
|
||||
{
|
||||
$phpLimits = array(
|
||||
'memory_limit' => $this->memoryLimit,
|
||||
'max_execution_time' => $this->maxExecutionTime,
|
||||
'pcre.backtrack_limit' => $this->pcreBacktrackLimit,
|
||||
'pcre.recursion_limit' => $this->pcreRecursionLimit
|
||||
);
|
||||
|
||||
// If current settings are higher respect them.
|
||||
foreach ($phpLimits as $name => $suggested) {
|
||||
$current = Utils::normalizeInt(ini_get($name));
|
||||
|
||||
if ($current >= $suggested) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// memoryLimit exception: allow -1 for "no memory limit".
|
||||
if ($name === 'memory_limit' && $current === -1) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// maxExecutionTime exception: allow 0 for "no memory limit".
|
||||
if ($name === 'max_execution_time' && $current === 0) {
|
||||
continue;
|
||||
}
|
||||
|
||||
ini_set($name, $suggested);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a preserved token
|
||||
* @param string $token
|
||||
* @return string The token ID string
|
||||
*/
|
||||
private function registerPreservedToken($token)
|
||||
{
|
||||
$tokenId = sprintf(self::PRESERVED_TOKEN, count($this->preservedTokens));
|
||||
$this->preservedTokens[$tokenId] = $token;
|
||||
return $tokenId;
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a candidate comment token
|
||||
* @param string $comment
|
||||
* @return string The comment token ID string
|
||||
*/
|
||||
private function registerCommentToken($comment)
|
||||
{
|
||||
$tokenId = sprintf(self::COMMENT_TOKEN, count($this->comments));
|
||||
$this->comments[$tokenId] = $comment;
|
||||
return $tokenId;
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers a rule body token
|
||||
* @param string $body the minified rule body
|
||||
* @return string The rule body token ID string
|
||||
*/
|
||||
private function registerRuleBodyToken($body)
|
||||
{
|
||||
if (empty($body)) {
|
||||
return '';
|
||||
}
|
||||
|
||||
$tokenId = sprintf(self::RULE_BODY_TOKEN, count($this->ruleBodies));
|
||||
$this->ruleBodies[$tokenId] = $body;
|
||||
return $tokenId;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parses & minifies the given input CSS string
|
||||
* @param string $css
|
||||
* @return string
|
||||
*/
|
||||
private function minify($css)
|
||||
{
|
||||
// Process data urls
|
||||
$css = $this->processDataUrls($css);
|
||||
|
||||
// Process comments
|
||||
$css = preg_replace_callback(
|
||||
'/(?<!\\\\)\/\*(.*?)\*(?<!\\\\)\//Ss',
|
||||
array($this, 'processCommentsCallback'),
|
||||
$css
|
||||
);
|
||||
|
||||
// IE7: Process Microsoft matrix filters (whitespaces between Matrix parameters). Can contain strings inside.
|
||||
$css = preg_replace_callback(
|
||||
'/filter:\s*progid:DXImageTransform\.Microsoft\.Matrix\(([^)]+)\)/Ss',
|
||||
array($this, 'processOldIeSpecificMatrixDefinitionCallback'),
|
||||
$css
|
||||
);
|
||||
|
||||
// Process quoted unquotable attribute selectors to unquote them. Covers most common cases.
|
||||
// Likelyhood of a quoted attribute selector being a substring in a string: Very very low.
|
||||
$css = preg_replace(
|
||||
'/\[\s*([a-z][a-z-]+)\s*([\*\|\^\$~]?=)\s*[\'"](-?[a-z_][a-z0-9-_]+)[\'"]\s*\]/Ssi',
|
||||
'[$1$2$3]',
|
||||
$css
|
||||
);
|
||||
|
||||
// Process strings so their content doesn't get accidentally minified
|
||||
$double_quoted = '"(?:[^"\\\\]|\\\\.)*"';
|
||||
$single_quoted = "'(?:[^'\\\\]|\\\\.)*'";
|
||||
$css = preg_replace_callback(
|
||||
"/(?<!\\\\)(?:$double_quoted|$single_quoted)/S",
|
||||
array($this, 'processStringsCallback'),
|
||||
$css
|
||||
);
|
||||
|
||||
// Normalize all whitespace strings to single spaces. Easier to work with that way.
|
||||
$css = preg_replace('/\s+/S', ' ', $css);
|
||||
|
||||
// Process comments
|
||||
$css = $this->processComments($css);
|
||||
|
||||
// Process rule bodies
|
||||
$css = $this->processRuleBodies($css);
|
||||
|
||||
// Process at-rules and selectors
|
||||
$css = $this->processAtRulesAndSelectors($css);
|
||||
|
||||
// Restore preserved rule bodies before splitting
|
||||
$css = strtr($css, $this->ruleBodies);
|
||||
|
||||
// Some source control tools don't like it when files containing lines longer
|
||||
// than, say 8000 characters, are checked in. The linebreak option is used in
|
||||
// that case to split long lines after a specific column.
|
||||
if ($this->linebreakPosition > 0) {
|
||||
$l = strlen($css);
|
||||
$offset = $this->linebreakPosition;
|
||||
while (preg_match('/(?<!\\\\)\}(?!\n)/S', $css, $matches, PREG_OFFSET_CAPTURE, $offset)) {
|
||||
$matchIndex = $matches[0][1];
|
||||
$css = substr_replace($css, "\n", $matchIndex + 1, 0);
|
||||
$offset = $matchIndex + 2 + $this->linebreakPosition;
|
||||
$l += 1;
|
||||
if ($offset > $l) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Restore preserved comments and strings
|
||||
$css = strtr($css, $this->preservedTokens);
|
||||
|
||||
return trim($css);
|
||||
}
|
||||
|
||||
/**
|
||||
* Searches & replaces all data urls with tokens before we start compressing,
|
||||
* to avoid performance issues running some of the subsequent regexes against large string chunks.
|
||||
* @param string $css
|
||||
* @return string
|
||||
*/
|
||||
private function processDataUrls($css)
|
||||
{
|
||||
$ret = '';
|
||||
$searchOffset = $substrOffset = 0;
|
||||
|
||||
// Since we need to account for non-base64 data urls, we need to handle
|
||||
// ' and ) being part of the data string.
|
||||
while (preg_match('/url\(\s*(["\']?)data:/Si', $css, $m, PREG_OFFSET_CAPTURE, $searchOffset)) {
|
||||
$matchStartIndex = $m[0][1];
|
||||
$dataStartIndex = $matchStartIndex + 4; // url( length
|
||||
$searchOffset = $matchStartIndex + strlen($m[0][0]);
|
||||
$terminator = $m[1][0]; // ', " or empty (not quoted)
|
||||
$terminatorRegex = '/(?<!\\\\)'. (strlen($terminator) === 0 ? '' : $terminator.'\s*') .'(\))/S';
|
||||
|
||||
$ret .= substr($css, $substrOffset, $matchStartIndex - $substrOffset);
|
||||
|
||||
// Terminator found
|
||||
if (preg_match($terminatorRegex, $css, $matches, PREG_OFFSET_CAPTURE, $searchOffset)) {
|
||||
$matchEndIndex = $matches[1][1];
|
||||
$searchOffset = $matchEndIndex + 1;
|
||||
$token = substr($css, $dataStartIndex, $matchEndIndex - $dataStartIndex);
|
||||
|
||||
// Remove all spaces only for base64 encoded URLs.
|
||||
if (stripos($token, 'base64,') !== false) {
|
||||
$token = preg_replace('/\s+/S', '', $token);
|
||||
}
|
||||
|
||||
$ret .= 'url('. $this->registerPreservedToken(trim($token)) .')';
|
||||
// No end terminator found, re-add the whole match. Should we throw/warn here?
|
||||
} else {
|
||||
$ret .= substr($css, $matchStartIndex, $searchOffset - $matchStartIndex);
|
||||
}
|
||||
|
||||
$substrOffset = $searchOffset;
|
||||
}
|
||||
|
||||
$ret .= substr($css, $substrOffset);
|
||||
|
||||
return $ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers all comments found as candidates to be preserved.
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
private function processCommentsCallback($matches)
|
||||
{
|
||||
return '/*'. $this->registerCommentToken($matches[1]) .'*/';
|
||||
}
|
||||
|
||||
/**
|
||||
* Preserves old IE Matrix string definition
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
private function processOldIeSpecificMatrixDefinitionCallback($matches)
|
||||
{
|
||||
return 'filter:progid:DXImageTransform.Microsoft.Matrix('. $this->registerPreservedToken($matches[1]) .')';
|
||||
}
|
||||
|
||||
/**
|
||||
* Preserves strings found
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
private function processStringsCallback($matches)
|
||||
{
|
||||
$match = $matches[0];
|
||||
$quote = substr($match, 0, 1);
|
||||
$match = substr($match, 1, -1);
|
||||
|
||||
// maybe the string contains a comment-like substring?
|
||||
// one, maybe more? put'em back then
|
||||
if (strpos($match, self::COMMENT_TOKEN_START) !== false) {
|
||||
$match = strtr($match, $this->comments);
|
||||
}
|
||||
|
||||
// minify alpha opacity in filter strings
|
||||
$match = str_ireplace('progid:DXImageTransform.Microsoft.Alpha(Opacity=', 'alpha(opacity=', $match);
|
||||
|
||||
return $quote . $this->registerPreservedToken($match) . $quote;
|
||||
}
|
||||
|
||||
/**
|
||||
* Preserves or removes comments found.
|
||||
* @param string $css
|
||||
* @return string
|
||||
*/
|
||||
private function processComments($css)
|
||||
{
|
||||
foreach ($this->comments as $commentId => $comment) {
|
||||
$commentIdString = '/*'. $commentId .'*/';
|
||||
|
||||
// ! in the first position of the comment means preserve
|
||||
// so push to the preserved tokens keeping the !
|
||||
if ($this->keepImportantComments && strpos($comment, '!') === 0) {
|
||||
$preservedTokenId = $this->registerPreservedToken($comment);
|
||||
// Put new lines before and after /*! important comments
|
||||
$css = str_replace($commentIdString, "\n/*$preservedTokenId*/\n", $css);
|
||||
continue;
|
||||
}
|
||||
|
||||
// # sourceMappingURL= in the first position of the comment means sourcemap
|
||||
// so push to the preserved tokens if {$this->keepSourceMapComment} is truthy.
|
||||
if ($this->keepSourceMapComment && strpos($comment, '# sourceMappingURL=') === 0) {
|
||||
$preservedTokenId = $this->registerPreservedToken($comment);
|
||||
// Add new line before the sourcemap comment
|
||||
$css = str_replace($commentIdString, "\n/*$preservedTokenId*/", $css);
|
||||
continue;
|
||||
}
|
||||
|
||||
// Keep empty comments after child selectors (IE7 hack)
|
||||
// e.g. html >/**/ body
|
||||
if (strlen($comment) === 0 && strpos($css, '>/*'.$commentId) !== false) {
|
||||
$css = str_replace($commentId, $this->registerPreservedToken(''), $css);
|
||||
continue;
|
||||
}
|
||||
|
||||
// in all other cases kill the comment
|
||||
$css = str_replace($commentIdString, '', $css);
|
||||
}
|
||||
|
||||
// Normalize whitespace again
|
||||
$css = preg_replace('/ +/S', ' ', $css);
|
||||
|
||||
return $css;
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds, minifies & preserves all rule bodies.
|
||||
* @param string $css the whole stylesheet.
|
||||
* @return string
|
||||
*/
|
||||
private function processRuleBodies($css)
|
||||
{
|
||||
$ret = '';
|
||||
$searchOffset = $substrOffset = 0;
|
||||
|
||||
while (($blockStartPos = strpos($css, '{', $searchOffset)) !== false) {
|
||||
$blockEndPos = strpos($css, '}', $blockStartPos);
|
||||
if ( ! $blockEndPos ) throw new \Exception( 'CSS parse error' ) ;
|
||||
|
||||
$nextBlockStartPos = strpos($css, '{', $blockStartPos + 1);
|
||||
$ret .= substr($css, $substrOffset, $blockStartPos - $substrOffset);
|
||||
|
||||
if ($nextBlockStartPos !== false && $nextBlockStartPos < $blockEndPos) {
|
||||
$ret .= substr($css, $blockStartPos, $nextBlockStartPos - $blockStartPos);
|
||||
$searchOffset = $nextBlockStartPos;
|
||||
} else {
|
||||
$ruleBody = substr($css, $blockStartPos + 1, $blockEndPos - $blockStartPos - 1);
|
||||
$ruleBodyToken = $this->registerRuleBodyToken($this->processRuleBody($ruleBody));
|
||||
$ret .= '{'. $ruleBodyToken .'}';
|
||||
$searchOffset = $blockEndPos + 1;
|
||||
}
|
||||
|
||||
$substrOffset = $searchOffset;
|
||||
}
|
||||
|
||||
$ret .= substr($css, $substrOffset);
|
||||
|
||||
return $ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compresses non-group rule bodies.
|
||||
* @param string $body The rule body without curly braces
|
||||
* @return string
|
||||
*/
|
||||
private function processRuleBody($body)
|
||||
{
|
||||
$body = trim($body);
|
||||
|
||||
// Remove spaces before the things that should not have spaces before them.
|
||||
$body = preg_replace('/ ([:=,)*\/;\n])/S', '$1', $body);
|
||||
|
||||
// Remove the spaces after the things that should not have spaces after them.
|
||||
$body = preg_replace('/([:=,(*\/!;\n]) /S', '$1', $body);
|
||||
|
||||
// Replace multiple semi-colons in a row by a single one
|
||||
$body = preg_replace('/;;+/S', ';', $body);
|
||||
|
||||
// Remove semicolon before closing brace except when:
|
||||
// - The last property is prefixed with a `*` (lte IE7 hack) to avoid issues on Symbian S60 3.x browsers.
|
||||
if (!preg_match('/\*[a-z0-9-]+:[^;]+;$/Si', $body)) {
|
||||
$body = rtrim($body, ';');
|
||||
}
|
||||
|
||||
// Remove important comments inside a rule body (because they make no sense here).
|
||||
if (strpos($body, '/*') !== false) {
|
||||
$body = preg_replace('/\n?\/\*[A-Z0-9_]+\*\/\n?/S', '', $body);
|
||||
}
|
||||
|
||||
// Empty rule body? Exit :)
|
||||
if (empty($body)) {
|
||||
return '';
|
||||
}
|
||||
|
||||
// Shorten font-weight values
|
||||
$body = preg_replace(
|
||||
array('/(font-weight:)bold\b/Si', '/(font-weight:)normal\b/Si'),
|
||||
array('${1}700', '${1}400'),
|
||||
$body
|
||||
);
|
||||
|
||||
// Shorten background property
|
||||
$body = preg_replace('/(background:)(?:none|transparent)( !|;|$)/Si', '${1}0 0$2', $body);
|
||||
|
||||
// Shorten opacity IE filter
|
||||
$body = str_ireplace('progid:DXImageTransform.Microsoft.Alpha(Opacity=', 'alpha(opacity=', $body);
|
||||
|
||||
// Shorten colors from rgb(51,102,153) to #336699, rgb(100%,0%,0%) to #ff0000 (sRGB color space)
|
||||
// Shorten colors from hsl(0, 100%, 50%) to #ff0000 (sRGB color space)
|
||||
// This makes it more likely that it'll get further compressed in the next step.
|
||||
$body = preg_replace_callback(
|
||||
'/(rgb|hsl)\(([0-9,.% -]+)\)(.|$)/Si',
|
||||
array($this, 'shortenHslAndRgbToHexCallback'),
|
||||
$body
|
||||
);
|
||||
|
||||
// Shorten colors from #AABBCC to #ABC or shorter color name:
|
||||
// - Look for hex colors which don't have a "=" in front of them (to avoid MSIE filters)
|
||||
$body = preg_replace_callback(
|
||||
'/(?<!=)#([0-9a-f]{3,6})( |,|\)|;|$)/Si',
|
||||
array($this, 'shortenHexColorsCallback'),
|
||||
$body
|
||||
);
|
||||
|
||||
// Shorten long named colors with a shorter HEX counterpart: white -> #fff.
|
||||
// Run at least 2 times to cover most cases
|
||||
$body = preg_replace_callback(
|
||||
array($this->namedToHexColorsRegex, $this->namedToHexColorsRegex),
|
||||
array($this, 'shortenNamedColorsCallback'),
|
||||
$body
|
||||
);
|
||||
|
||||
// Replace positive sign from numbers before the leading space is removed.
|
||||
// +1.2em to 1.2em, +.8px to .8px, +2% to 2%
|
||||
$body = preg_replace('/([ :,(])\+(\.?\d+)/S', '$1$2', $body);
|
||||
|
||||
// shorten ms to s
|
||||
$body = preg_replace_callback('/([ :,(])(-?)(\d{3,})ms/Si', function ($matches) {
|
||||
return $matches[1] . $matches[2] . ((int) $matches[3] / 1000) .'s';
|
||||
}, $body);
|
||||
|
||||
// Remove leading zeros from integer and float numbers.
|
||||
// 000.6 to .6, -0.8 to -.8, 0050 to 50, -01.05 to -1.05
|
||||
$body = preg_replace('/([ :,(])(-?)0+([1-9]?\.?\d+)/S', '$1$2$3', $body);
|
||||
|
||||
// Remove trailing zeros from float numbers.
|
||||
// -6.0100em to -6.01em, .0100 to .01, 1.200px to 1.2px
|
||||
$body = preg_replace('/([ :,(])(-?\d?\.\d+?)0+([^\d])/S', '$1$2$3', $body);
|
||||
|
||||
// Remove trailing .0 -> -9.0 to -9
|
||||
$body = preg_replace('/([ :,(])(-?\d+)\.0([^\d])/S', '$1$2$3', $body);
|
||||
|
||||
// Replace 0 length numbers with 0
|
||||
$body = preg_replace('/([ :,(])-?\.?0+([^\d])/S', '${1}0$2', $body);
|
||||
|
||||
// Shorten zero values for safe properties only
|
||||
$body = preg_replace(
|
||||
array(
|
||||
$this->shortenOneZeroesRegex,
|
||||
$this->shortenTwoZeroesRegex,
|
||||
$this->shortenThreeZeroesRegex,
|
||||
$this->shortenFourZeroesRegex
|
||||
),
|
||||
array(
|
||||
'$1$2:0',
|
||||
'$1$2:$3 0',
|
||||
'$1$2:$3 $4 0',
|
||||
'$1$2:$3 $4 $5 0'
|
||||
),
|
||||
$body
|
||||
);
|
||||
|
||||
// Replace 0 0 0; or 0 0 0 0; with 0 0 for background-position property.
|
||||
$body = preg_replace('/(background-position):0(?: 0){2,3}( !|;|$)/Si', '$1:0 0$2', $body);
|
||||
|
||||
// Shorten suitable shorthand properties with repeated values
|
||||
$body = preg_replace(
|
||||
array(
|
||||
'/(margin|padding|border-(?:width|radius)):('.$this->numRegex.')(?: \2)+( !|;|$)/Si',
|
||||
'/(border-(?:style|color)):([#a-z0-9]+)(?: \2)+( !|;|$)/Si'
|
||||
),
|
||||
'$1:$2$3',
|
||||
$body
|
||||
);
|
||||
$body = preg_replace(
|
||||
array(
|
||||
'/(margin|padding|border-(?:width|radius)):'.
|
||||
'('.$this->numRegex.') ('.$this->numRegex.') \2 \3( !|;|$)/Si',
|
||||
'/(border-(?:style|color)):([#a-z0-9]+) ([#a-z0-9]+) \2 \3( !|;|$)/Si'
|
||||
),
|
||||
'$1:$2 $3$4',
|
||||
$body
|
||||
);
|
||||
$body = preg_replace(
|
||||
array(
|
||||
'/(margin|padding|border-(?:width|radius)):'.
|
||||
'('.$this->numRegex.') ('.$this->numRegex.') ('.$this->numRegex.') \3( !|;|$)/Si',
|
||||
'/(border-(?:style|color)):([#a-z0-9]+) ([#a-z0-9]+) ([#a-z0-9]+) \3( !|;|$)/Si'
|
||||
),
|
||||
'$1:$2 $3 $4$5',
|
||||
$body
|
||||
);
|
||||
|
||||
// Lowercase some common functions that can be values
|
||||
$body = preg_replace_callback(
|
||||
'/(?:attr|blur|brightness|circle|contrast|cubic-bezier|drop-shadow|ellipse|from|grayscale|'.
|
||||
'hsla?|hue-rotate|inset|invert|local|minmax|opacity|perspective|polygon|rgba?|rect|repeat|saturate|sepia|'.
|
||||
'steps|to|url|var|-webkit-gradient|'.
|
||||
'(?:-(?:atsc|khtml|moz|ms|o|wap|webkit)-)?(?:calc|(?:repeating-)?(?:linear|radial)-gradient))\(/Si',
|
||||
array($this, 'strtolowerCallback'),
|
||||
$body
|
||||
);
|
||||
|
||||
// Lowercase all uppercase properties
|
||||
$body = preg_replace_callback('/(?:^|;)[A-Z-]+:/S', array($this, 'strtolowerCallback'), $body);
|
||||
|
||||
return $body;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compresses At-rules and selectors.
|
||||
* @param string $css the whole stylesheet with rule bodies tokenized.
|
||||
* @return string
|
||||
*/
|
||||
private function processAtRulesAndSelectors($css)
|
||||
{
|
||||
$charset = '';
|
||||
$imports = '';
|
||||
$namespaces = '';
|
||||
|
||||
// Remove spaces before the things that should not have spaces before them.
|
||||
$css = preg_replace('/ ([@{};>+)\]~=,\/\n])/S', '$1', $css);
|
||||
|
||||
// Remove the spaces after the things that should not have spaces after them.
|
||||
$css = preg_replace('/([{}:;>+(\[~=,\/\n]) /S', '$1', $css);
|
||||
|
||||
// Shorten shortable double colon (CSS3) pseudo-elements to single colon (CSS2)
|
||||
$css = preg_replace('/::(before|after|first-(?:line|letter))(\{|,)/Si', ':$1$2', $css);
|
||||
|
||||
// Retain space for special IE6 cases
|
||||
$css = preg_replace_callback('/:first-(line|letter)(\{|,)/Si', function ($matches) {
|
||||
return ':first-'. strtolower($matches[1]) .' '. $matches[2];
|
||||
}, $css);
|
||||
|
||||
// Find a fraction that may used in some @media queries such as: (min-aspect-ratio: 1/1)
|
||||
// Add token to add the "/" back in later
|
||||
$css = preg_replace('/\(([a-z-]+):([0-9]+)\/([0-9]+)\)/Si', '($1:$2'. self::QUERY_FRACTION .'$3)', $css);
|
||||
|
||||
// Remove empty rule blocks up to 2 levels deep.
|
||||
$css = preg_replace(array_fill(0, 2, '/(\{)[^{};\/\n]+\{\}/S'), '$1', $css);
|
||||
$css = preg_replace('/[^{};\/\n]+\{\}/S', '', $css);
|
||||
|
||||
// Two important comments next to each other? Remove extra newline.
|
||||
if ($this->keepImportantComments) {
|
||||
$css = str_replace("\n\n", "\n", $css);
|
||||
}
|
||||
|
||||
// Restore fraction
|
||||
$css = str_replace(self::QUERY_FRACTION, '/', $css);
|
||||
|
||||
// Lowercase some popular @directives
|
||||
$css = preg_replace_callback(
|
||||
'/(?<!\\\\)@(?:charset|document|font-face|import|(?:-(?:atsc|khtml|moz|ms|o|wap|webkit)-)?keyframes|media|'.
|
||||
'namespace|page|supports|viewport)/Si',
|
||||
array($this, 'strtolowerCallback'),
|
||||
$css
|
||||
);
|
||||
|
||||
// Lowercase some popular media types
|
||||
$css = preg_replace_callback(
|
||||
'/[ ,](?:all|aural|braille|handheld|print|projection|screen|tty|tv|embossed|speech)[ ,;{]/Si',
|
||||
array($this, 'strtolowerCallback'),
|
||||
$css
|
||||
);
|
||||
|
||||
// Lowercase some common pseudo-classes & pseudo-elements
|
||||
$css = preg_replace_callback(
|
||||
'/(?<!\\\\):(?:active|after|before|checked|default|disabled|empty|enabled|first-(?:child|of-type)|'.
|
||||
'focus(?:-within)?|hover|indeterminate|in-range|invalid|lang\(|last-(?:child|of-type)|left|link|not\(|'.
|
||||
'nth-(?:child|of-type)\(|nth-last-(?:child|of-type)\(|only-(?:child|of-type)|optional|out-of-range|'.
|
||||
'read-(?:only|write)|required|right|root|:selection|target|valid|visited)/Si',
|
||||
array($this, 'strtolowerCallback'),
|
||||
$css
|
||||
);
|
||||
|
||||
// @charset handling
|
||||
if (preg_match($this->charsetRegex, $css, $matches)) {
|
||||
// Keep the first @charset at-rule found
|
||||
$charset = $matches[0];
|
||||
// Delete all @charset at-rules
|
||||
$css = preg_replace($this->charsetRegex, '', $css);
|
||||
}
|
||||
|
||||
// @import handling
|
||||
$css = preg_replace_callback($this->importRegex, function ($matches) use (&$imports) {
|
||||
// Keep all @import at-rules found for later
|
||||
$imports .= $matches[0];
|
||||
// Delete all @import at-rules
|
||||
return '';
|
||||
}, $css);
|
||||
|
||||
// @namespace handling
|
||||
$css = preg_replace_callback($this->namespaceRegex, function ($matches) use (&$namespaces) {
|
||||
// Keep all @namespace at-rules found for later
|
||||
$namespaces .= $matches[0];
|
||||
// Delete all @namespace at-rules
|
||||
return '';
|
||||
}, $css);
|
||||
|
||||
// Order critical at-rules:
|
||||
// 1. @charset first
|
||||
// 2. @imports below @charset
|
||||
// 3. @namespaces below @imports
|
||||
$css = $charset . $imports . $namespaces . $css;
|
||||
|
||||
return $css;
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts hsl() & rgb() colors to HEX format.
|
||||
* @param $matches
|
||||
* @return string
|
||||
*/
|
||||
private function shortenHslAndRgbToHexCallback($matches)
|
||||
{
|
||||
$type = $matches[1];
|
||||
$values = explode(',', $matches[2]);
|
||||
$terminator = $matches[3];
|
||||
|
||||
if ($type === 'hsl') {
|
||||
$values = Utils::hslToRgb($values);
|
||||
}
|
||||
|
||||
$hexColors = Utils::rgbToHex($values);
|
||||
|
||||
// Restore space after rgb() or hsl() function in some cases such as:
|
||||
// background-image: linear-gradient(to bottom, rgb(210,180,140) 10%, rgb(255,0,0) 90%);
|
||||
if (!empty($terminator) && !preg_match('/[ ,);]/S', $terminator)) {
|
||||
$terminator = ' '. $terminator;
|
||||
}
|
||||
|
||||
return '#'. implode('', $hexColors) . $terminator;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compresses HEX color values of the form #AABBCC to #ABC or short color name.
|
||||
* @param $matches
|
||||
* @return string
|
||||
*/
|
||||
private function shortenHexColorsCallback($matches)
|
||||
{
|
||||
$hex = $matches[1];
|
||||
|
||||
// Shorten suitable 6 chars HEX colors
|
||||
if (strlen($hex) === 6 && preg_match('/^([0-9a-f])\1([0-9a-f])\2([0-9a-f])\3$/Si', $hex, $m)) {
|
||||
$hex = $m[1] . $m[2] . $m[3];
|
||||
}
|
||||
|
||||
// Lowercase
|
||||
$hex = '#'. strtolower($hex);
|
||||
|
||||
// Replace Hex colors with shorter color names
|
||||
$color = array_key_exists($hex, $this->hexToNamedColorsMap) ? $this->hexToNamedColorsMap[$hex] : $hex;
|
||||
|
||||
return $color . $matches[2];
|
||||
}
|
||||
|
||||
/**
|
||||
* Shortens all named colors with a shorter HEX counterpart for a set of safe properties
|
||||
* e.g. white -> #fff
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
private function shortenNamedColorsCallback($matches)
|
||||
{
|
||||
return $matches[1] . $this->namedToHexColorsMap[strtolower($matches[2])] . $matches[3];
|
||||
}
|
||||
|
||||
/**
|
||||
* Makes a string lowercase
|
||||
* @param array $matches
|
||||
* @return string
|
||||
*/
|
||||
private function strtolowerCallback($matches)
|
||||
{
|
||||
return strtolower($matches[0]);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,350 @@
|
||||
<?php
|
||||
/**
|
||||
* Rewrite file-relative URIs as root-relative in CSS files
|
||||
*
|
||||
* @package Minify
|
||||
* @author Stephen Clay <steve@mrclay.org>
|
||||
*/
|
||||
|
||||
namespace LiteSpeed\Lib\CSS_MIN ;
|
||||
|
||||
defined( 'WPINC' ) || exit ;
|
||||
|
||||
class UriRewriter
|
||||
{
|
||||
|
||||
/**
|
||||
* rewrite() and rewriteRelative() append debugging information here
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
public static $debugText = '';
|
||||
|
||||
/**
|
||||
* In CSS content, rewrite file relative URIs as root relative
|
||||
*
|
||||
* @param string $css
|
||||
*
|
||||
* @param string $currentDir The directory of the current CSS file.
|
||||
*
|
||||
* @param string $docRoot The document root of the web site in which
|
||||
* the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']).
|
||||
*
|
||||
* @param array $symlinks (default = array()) If the CSS file is stored in
|
||||
* a symlink-ed directory, provide an array of link paths to
|
||||
* target paths, where the link paths are within the document root. Because
|
||||
* paths need to be normalized for this to work, use "//" to substitute
|
||||
* the doc root in the link paths (the array keys). E.g.:
|
||||
* <code>
|
||||
* array('//symlink' => '/real/target/path') // unix
|
||||
* array('//static' => 'D:\\staticStorage') // Windows
|
||||
* </code>
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function rewrite($css, $currentDir, $docRoot = null, $symlinks = array())
|
||||
{
|
||||
self::$_docRoot = self::_realpath(
|
||||
$docRoot ? $docRoot : $_SERVER['DOCUMENT_ROOT']
|
||||
);
|
||||
self::$_currentDir = self::_realpath($currentDir);
|
||||
self::$_symlinks = array();
|
||||
|
||||
// normalize symlinks in order to map to link
|
||||
foreach ($symlinks as $link => $target) {
|
||||
$link = ($link === '//') ? self::$_docRoot : str_replace('//', self::$_docRoot . '/', $link);
|
||||
$link = strtr($link, '/', DIRECTORY_SEPARATOR);
|
||||
|
||||
self::$_symlinks[$link] = self::_realpath($target);
|
||||
}
|
||||
|
||||
self::$debugText .= "docRoot : " . self::$_docRoot . "\n"
|
||||
. "currentDir : " . self::$_currentDir . "\n";
|
||||
if (self::$_symlinks) {
|
||||
self::$debugText .= "symlinks : " . var_export(self::$_symlinks, 1) . "\n";
|
||||
}
|
||||
self::$debugText .= "\n";
|
||||
|
||||
$css = self::_trimUrls($css);
|
||||
|
||||
$css = self::_owlifySvgPaths($css);
|
||||
|
||||
// rewrite
|
||||
$pattern = '/@import\\s+([\'"])(.*?)[\'"]/';
|
||||
$css = preg_replace_callback($pattern, __CLASS__ . '::_processUriCB', $css);
|
||||
|
||||
$pattern = '/url\\(\\s*([\'"](.*?)[\'"]|[^\\)\\s]+)\\s*\\)/';
|
||||
$css = preg_replace_callback($pattern, __CLASS__ . '::_processUriCB', $css);
|
||||
|
||||
$css = self::_unOwlify($css);
|
||||
|
||||
return $css;
|
||||
}
|
||||
|
||||
/**
|
||||
* In CSS content, prepend a path to relative URIs
|
||||
*
|
||||
* @param string $css
|
||||
*
|
||||
* @param string $path The path to prepend.
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function prepend($css, $path)
|
||||
{
|
||||
self::$_prependPath = $path;
|
||||
|
||||
$css = self::_trimUrls($css);
|
||||
|
||||
$css = self::_owlifySvgPaths($css);
|
||||
|
||||
// append
|
||||
$pattern = '/@import\\s+([\'"])(.*?)[\'"]/';
|
||||
$css = preg_replace_callback($pattern, __CLASS__ . '::_processUriCB', $css);
|
||||
|
||||
$pattern = '/url\\(\\s*([\'"](.*?)[\'"]|[^\\)\\s]+)\\s*\\)/';
|
||||
$css = preg_replace_callback($pattern, __CLASS__ . '::_processUriCB', $css);
|
||||
|
||||
$css = self::_unOwlify($css);
|
||||
|
||||
self::$_prependPath = null;
|
||||
|
||||
return $css;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a root relative URI from a file relative URI
|
||||
*
|
||||
* <code>
|
||||
* UriRewriter::rewriteRelative(
|
||||
* '../img/hello.gif'
|
||||
* , '/home/user/www/css' // path of CSS file
|
||||
* , '/home/user/www' // doc root
|
||||
* );
|
||||
* // returns '/img/hello.gif'
|
||||
*
|
||||
* // example where static files are stored in a symlinked directory
|
||||
* UriRewriter::rewriteRelative(
|
||||
* 'hello.gif'
|
||||
* , '/var/staticFiles/theme'
|
||||
* , '/home/user/www'
|
||||
* , array('/home/user/www/static' => '/var/staticFiles')
|
||||
* );
|
||||
* // returns '/static/theme/hello.gif'
|
||||
* </code>
|
||||
*
|
||||
* @param string $uri file relative URI
|
||||
*
|
||||
* @param string $realCurrentDir realpath of the current file's directory.
|
||||
*
|
||||
* @param string $realDocRoot realpath of the site document root.
|
||||
*
|
||||
* @param array $symlinks (default = array()) If the file is stored in
|
||||
* a symlink-ed directory, provide an array of link paths to
|
||||
* real target paths, where the link paths "appear" to be within the document
|
||||
* root. E.g.:
|
||||
* <code>
|
||||
* array('/home/foo/www/not/real/path' => '/real/target/path') // unix
|
||||
* array('C:\\htdocs\\not\\real' => 'D:\\real\\target\\path') // Windows
|
||||
* </code>
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function rewriteRelative($uri, $realCurrentDir, $realDocRoot, $symlinks = array())
|
||||
{
|
||||
// prepend path with current dir separator (OS-independent)
|
||||
$path = strtr($realCurrentDir, '/', DIRECTORY_SEPARATOR);
|
||||
$path .= DIRECTORY_SEPARATOR . strtr($uri, '/', DIRECTORY_SEPARATOR);
|
||||
|
||||
self::$debugText .= "file-relative URI : {$uri}\n"
|
||||
. "path prepended : {$path}\n";
|
||||
|
||||
// "unresolve" a symlink back to doc root
|
||||
foreach ($symlinks as $link => $target) {
|
||||
if (0 === strpos($path, $target)) {
|
||||
// replace $target with $link
|
||||
$path = $link . substr($path, strlen($target));
|
||||
|
||||
self::$debugText .= "symlink unresolved : {$path}\n";
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
// strip doc root
|
||||
$path = substr($path, strlen($realDocRoot));
|
||||
|
||||
self::$debugText .= "docroot stripped : {$path}\n";
|
||||
|
||||
// fix to root-relative URI
|
||||
$uri = strtr($path, '/\\', '//');
|
||||
$uri = self::removeDots($uri);
|
||||
|
||||
self::$debugText .= "traversals removed : {$uri}\n\n";
|
||||
|
||||
return $uri;
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove instances of "./" and "../" where possible from a root-relative URI
|
||||
*
|
||||
* @param string $uri
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function removeDots($uri)
|
||||
{
|
||||
$uri = str_replace('/./', '/', $uri);
|
||||
// inspired by patch from Oleg Cherniy
|
||||
do {
|
||||
$uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed);
|
||||
} while ($changed);
|
||||
|
||||
return $uri;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get realpath with any trailing slash removed. If realpath() fails,
|
||||
* just remove the trailing slash.
|
||||
*
|
||||
* @param string $path
|
||||
*
|
||||
* @return mixed path with no trailing slash
|
||||
*/
|
||||
protected static function _realpath($path)
|
||||
{
|
||||
$realPath = realpath($path);
|
||||
if ($realPath !== false) {
|
||||
$path = $realPath;
|
||||
}
|
||||
|
||||
return rtrim($path, '/\\');
|
||||
}
|
||||
|
||||
/**
|
||||
* Directory of this stylesheet
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
private static $_currentDir = '';
|
||||
|
||||
/**
|
||||
* DOC_ROOT
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
private static $_docRoot = '';
|
||||
|
||||
/**
|
||||
* directory replacements to map symlink targets back to their
|
||||
* source (within the document root) E.g. '/var/www/symlink' => '/var/realpath'
|
||||
*
|
||||
* @var array
|
||||
*/
|
||||
private static $_symlinks = array();
|
||||
|
||||
/**
|
||||
* Path to prepend
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
private static $_prependPath = null;
|
||||
|
||||
/**
|
||||
* @param string $css
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
private static function _trimUrls($css)
|
||||
{
|
||||
$pattern = '/
|
||||
url\\( # url(
|
||||
\\s*
|
||||
([^\\)]+?) # 1 = URI (assuming does not contain ")")
|
||||
\\s*
|
||||
\\) # )
|
||||
/x';
|
||||
|
||||
return preg_replace($pattern, 'url($1)', $css);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param array $m
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
private static function _processUriCB($m)
|
||||
{
|
||||
// $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
|
||||
$isImport = ($m[0][0] === '@');
|
||||
// determine URI and the quote character (if any)
|
||||
if ($isImport) {
|
||||
$quoteChar = $m[1];
|
||||
$uri = $m[2];
|
||||
} else {
|
||||
// $m[1] is either quoted or not
|
||||
$quoteChar = ($m[1][0] === "'" || $m[1][0] === '"') ? $m[1][0] : '';
|
||||
|
||||
$uri = ($quoteChar === '') ? $m[1] : substr($m[1], 1, strlen($m[1]) - 2);
|
||||
}
|
||||
|
||||
if ($uri === '') {
|
||||
return $m[0];
|
||||
}
|
||||
|
||||
// if not anchor id, not root/scheme relative, and not starts with scheme
|
||||
if (!preg_match('~^(#|/|[a-z]+\:)~', $uri)) {
|
||||
// URI is file-relative: rewrite depending on options
|
||||
if (self::$_prependPath === null) {
|
||||
$uri = self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks);
|
||||
} else {
|
||||
$uri = self::$_prependPath . $uri;
|
||||
if ($uri[0] === '/') {
|
||||
$root = '';
|
||||
$rootRelative = $uri;
|
||||
$uri = $root . self::removeDots($rootRelative);
|
||||
} elseif (preg_match('@^((https?\:)?//([^/]+))/@', $uri, $m) && (false !== strpos($m[3], '.'))) {
|
||||
$root = $m[1];
|
||||
$rootRelative = substr($uri, strlen($root));
|
||||
$uri = $root . self::removeDots($rootRelative);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ($isImport) {
|
||||
return "@import {$quoteChar}{$uri}{$quoteChar}";
|
||||
} else {
|
||||
return "url({$quoteChar}{$uri}{$quoteChar})";
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Mungs some inline SVG URL declarations so they won't be touched
|
||||
*
|
||||
* @link https://github.com/mrclay/minify/issues/517
|
||||
* @see _unOwlify
|
||||
*
|
||||
* @param string $css
|
||||
* @return string
|
||||
*/
|
||||
private static function _owlifySvgPaths($css)
|
||||
{
|
||||
$pattern = '~\b((?:clip-path|mask|-webkit-mask)\s*\:\s*)url(\(\s*#\w+\s*\))~';
|
||||
|
||||
return preg_replace($pattern, '$1owl$2', $css);
|
||||
}
|
||||
|
||||
/**
|
||||
* Undo work of _owlify
|
||||
*
|
||||
* @see _owlifySvgPaths
|
||||
*
|
||||
* @param string $css
|
||||
* @return string
|
||||
*/
|
||||
private static function _unOwlify($css)
|
||||
{
|
||||
$pattern = '~\b((?:clip-path|mask|-webkit-mask)\s*\:\s*)owl~';
|
||||
|
||||
return preg_replace($pattern, '$1url', $css);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,150 @@
|
||||
<?php
|
||||
namespace LiteSpeed\Lib\CSS_MIN ;
|
||||
|
||||
defined( 'WPINC' ) || exit ;
|
||||
|
||||
class Utils
|
||||
{
|
||||
/**
|
||||
* Clamps a number between a minimum and a maximum value.
|
||||
* @param int|float $n the number to clamp
|
||||
* @param int|float $min the lower end number allowed
|
||||
* @param int|float $max the higher end number allowed
|
||||
* @return int|float
|
||||
*/
|
||||
public static function clampNumber($n, $min, $max)
|
||||
{
|
||||
return min(max($n, $min), $max);
|
||||
}
|
||||
|
||||
/**
|
||||
* Clamps a RGB color number outside the sRGB color space
|
||||
* @param int|float $n the number to clamp
|
||||
* @return int|float
|
||||
*/
|
||||
public static function clampNumberSrgb($n)
|
||||
{
|
||||
return self::clampNumber($n, 0, 255);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a HSL color into a RGB color
|
||||
* @param array $hslValues
|
||||
* @return array
|
||||
*/
|
||||
public static function hslToRgb($hslValues)
|
||||
{
|
||||
$h = floatval($hslValues[0]);
|
||||
$s = floatval(str_replace('%', '', $hslValues[1]));
|
||||
$l = floatval(str_replace('%', '', $hslValues[2]));
|
||||
|
||||
// Wrap and clamp, then fraction!
|
||||
$h = ((($h % 360) + 360) % 360) / 360;
|
||||
$s = self::clampNumber($s, 0, 100) / 100;
|
||||
$l = self::clampNumber($l, 0, 100) / 100;
|
||||
|
||||
if ($s == 0) {
|
||||
$r = $g = $b = self::roundNumber(255 * $l);
|
||||
} else {
|
||||
$v2 = $l < 0.5 ? $l * (1 + $s) : ($l + $s) - ($s * $l);
|
||||
$v1 = (2 * $l) - $v2;
|
||||
$r = self::roundNumber(255 * self::hueToRgb($v1, $v2, $h + (1/3)));
|
||||
$g = self::roundNumber(255 * self::hueToRgb($v1, $v2, $h));
|
||||
$b = self::roundNumber(255 * self::hueToRgb($v1, $v2, $h - (1/3)));
|
||||
}
|
||||
|
||||
return array($r, $g, $b);
|
||||
}
|
||||
|
||||
/**
|
||||
* Tests and selects the correct formula for each RGB color channel
|
||||
* @param $v1
|
||||
* @param $v2
|
||||
* @param $vh
|
||||
* @return mixed
|
||||
*/
|
||||
public static function hueToRgb($v1, $v2, $vh)
|
||||
{
|
||||
$vh = $vh < 0 ? $vh + 1 : ($vh > 1 ? $vh - 1 : $vh);
|
||||
|
||||
if ($vh * 6 < 1) {
|
||||
return $v1 + ($v2 - $v1) * 6 * $vh;
|
||||
}
|
||||
|
||||
if ($vh * 2 < 1) {
|
||||
return $v2;
|
||||
}
|
||||
|
||||
if ($vh * 3 < 2) {
|
||||
return $v1 + ($v2 - $v1) * ((2 / 3) - $vh) * 6;
|
||||
}
|
||||
|
||||
return $v1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert strings like "64M" or "30" to int values
|
||||
* @param mixed $size
|
||||
* @return int
|
||||
*/
|
||||
public static function normalizeInt($size)
|
||||
{
|
||||
if (is_string($size)) {
|
||||
$letter = substr($size, -1);
|
||||
$size = intval($size);
|
||||
switch ($letter) {
|
||||
case 'M':
|
||||
case 'm':
|
||||
return (int) $size * 1048576;
|
||||
case 'K':
|
||||
case 'k':
|
||||
return (int) $size * 1024;
|
||||
case 'G':
|
||||
case 'g':
|
||||
return (int) $size * 1073741824;
|
||||
}
|
||||
}
|
||||
return (int) $size;
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a string containing and RGB percentage value into a RGB integer value i.e. '90%' -> 229.5
|
||||
* @param $rgbPercentage
|
||||
* @return int
|
||||
*/
|
||||
public static function rgbPercentageToRgbInteger($rgbPercentage)
|
||||
{
|
||||
if (strpos($rgbPercentage, '%') !== false) {
|
||||
$rgbPercentage = self::roundNumber(floatval(str_replace('%', '', $rgbPercentage)) * 2.55);
|
||||
}
|
||||
|
||||
return intval($rgbPercentage, 10);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts a RGB color into a HEX color
|
||||
* @param array $rgbColors
|
||||
* @return array
|
||||
*/
|
||||
public static function rgbToHex($rgbColors)
|
||||
{
|
||||
$hexColors = array();
|
||||
|
||||
// Values outside the sRGB color space should be clipped (0-255)
|
||||
for ($i = 0, $l = count($rgbColors); $i < $l; $i++) {
|
||||
$hexColors[$i] = sprintf("%02x", self::clampNumberSrgb(self::rgbPercentageToRgbInteger($rgbColors[$i])));
|
||||
}
|
||||
|
||||
return $hexColors;
|
||||
}
|
||||
|
||||
/**
|
||||
* Rounds a number to its closest integer
|
||||
* @param $n
|
||||
* @return int
|
||||
*/
|
||||
public static function roundNumber($n)
|
||||
{
|
||||
return intval(round(floatval($n)), 10);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user