namibia
df0489e1eeeeab5a9bd44e1d84fce49924fe1bac
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 |
<?php /** * Class Minify_YUI_CssCompressor * @package Minify * * YUI Compressor * Author: Julien Lecomte - http://www.julienlecomte.net/ * Author: Isaac Schlueter - http://foohack.com/ * Author: Stoyan Stefanov - http://phpied.com/ * Author: Steve Clay - http://www.mrclay.org/ (PHP port) * Copyright (c) 2009 Yahoo! Inc. All rights reserved. * The copyrights embodied in the content of this file are licensed * by Yahoo! Inc. under the BSD (revised) open source license. */ /** * Compress CSS (incomplete DO NOT USE) * * @see https://github.com/yui/yuicompressor/blob/master/src/com/yahoo/platform/yui/compressor/CssCompressor.java * * @package Minify */ class Minify_YUI_CssCompressor { /** * Minify a CSS string * * @param string $css * * @return string */ public function compress($css, $linebreakpos = 0) { $css = str_replace("\r\n", "\n", $css); /** * @todo comment removal * @todo re-port from newer Java version */ // Normalize all whitespace strings to single spaces. Easier to work with that way. $css = preg_replace('@\s+@', ' ', $css); // Make a pseudo class for the Box Model Hack $css = preg_replace("@\"\\\\\"}\\\\\"\"@", "___PSEUDOCLASSBMH___", $css); // Remove the spaces before the things that should not have spaces before them. // But, be careful not to turn "p :link {...}" into "p:link{...}" // Swap out any pseudo-class colons with the token, and then swap back. $css = preg_replace_callback("@(^|\\})(([^\\{:])+:)+([^\\{]*\\{)@", array($this, '_removeSpacesCB'), $css); $css = preg_replace("@\\s+([!{};:>+\\(\\)\\],])@", "$1", $css); $css = str_replace("___PSEUDOCLASSCOLON___", ":", $css); // Remove the spaces after the things that should not have spaces after them. $css = preg_replace("@([!{}:;>+\\(\\[,])\\s+@", "$1", $css); // Add the semicolon where it's missing. $css = preg_replace("@([^;\\}])}@", "$1;}", $css); // Replace 0(px,em,%) with 0. $css = preg_replace("@([\\s:])(0)(px|em|%|in|cm|mm|pc|pt|ex)@", "$1$2", $css); // Replace 0 0 0 0; with 0. $css = str_replace(":0 0 0 0;", ":0;", $css); $css = str_replace(":0 0 0;", ":0;", $css); $css = str_replace(":0 0;", ":0;", $css); // Replace background-position:0; with background-position:0 0; $css = str_replace("background-position:0;", "background-position:0 0;", $css); // Replace 0.6 to .6, but only when preceded by : or a white-space $css = preg_replace("@(:|\\s)0+\\.(\\d+)@", "$1.$2", $css); // Shorten colors from rgb(51,102,153) to #336699 // This makes it more likely that it'll get further compressed in the next step. $css = preg_replace_callback("@rgb\\s*\\(\\s*([0-9,\\s]+)\\s*\\)@", array($this, '_shortenRgbCB'), $css); // Shorten colors from #AABBCC to #ABC. Note that we want to make sure // the color is not preceded by either ", " or =. Indeed, the property // filter: chroma(color="#FFFFFF"); // would become // filter: chroma(color="#FFF"); // which makes the filter break in IE. $css = preg_replace_callback("@([^\"'=\\s])(\\s*)#([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])@", array($this, '_shortenHexCB'), $css); // Remove empty rules. $css = preg_replace("@[^\\}]+\\{;\\}@", "", $css); $linebreakpos = isset($this->_options['linebreakpos']) ? $this->_options['linebreakpos'] : 0; if ($linebreakpos > 0) { // 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. $i = 0; $linestartpos = 0; $sb = $css; // make sure strlen returns byte count $mbIntEnc = null; if (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2)) { $mbIntEnc = mb_internal_encoding(); mb_internal_encoding('8bit'); } $sbLength = strlen($css); while ($i < $sbLength) { $c = $sb[$i++]; if ($c === '}' && $i - $linestartpos > $linebreakpos) { $sb = substr_replace($sb, "\n", $i, 0); $sbLength++; $linestartpos = $i; } } $css = $sb; // undo potential mb_encoding change if ($mbIntEnc !== null) { mb_internal_encoding($mbIntEnc); } } // Replace the pseudo class for the Box Model Hack $css = str_replace("___PSEUDOCLASSBMH___", "\"\\\\\"}\\\\\"\"", $css); // Replace multiple semi-colons in a row by a single one // See SF bug #1980989 $css = preg_replace("@;;+@", ";", $css); // prevent triggering IE6 bug: http://www.crankygeek.com/ie6pebug/ $css = preg_replace('/:first-l(etter|ine)\\{/', ':first-l$1 {', $css); // Trim the final string (for any leading or trailing white spaces) $css = trim($css); return $css; } protected function _removeSpacesCB($m) { return str_replace(':', '___PSEUDOCLASSCOLON___', $m[0]); } protected function _shortenRgbCB($m) { $rgbcolors = explode(',', $m[1]); $hexcolor = '#'; for ($i = 0; $i < count($rgbcolors); $i++) { $val = round($rgbcolors[$i]); if ($val < 16) { $hexcolor .= '0'; } $hexcolor .= dechex($val); } return $hexcolor; } protected function _shortenHexCB($m) { // Test for AABBCC pattern if ((strtolower($m[3])===strtolower($m[4])) && (strtolower($m[5])===strtolower($m[6])) && (strtolower($m[7])===strtolower($m[8]))) { return $m[1] . $m[2] . "#" . $m[3] . $m[5] . $m[7]; } else { return $m[0]; } } } |
Commits for namibiapublic/min/lib/Minify/YUI/CssCompressor.php
Revision | Author | Commited | Message |
---|---|---|---|
df0489 ... | Mark | Fri 14 Oct, 2016 10:01:00 +0000 | initial commit |