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Code Issues Releases Wiki Activity

Update CSSmin to latest version 2.4.8

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tubalmartin
2013-06-24 20:35:17 +02:00
parent 6f5721d2db
commit 59a466d6a6
1 changed files with 87 additions and 57 deletions
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144
min/lib/CSSmin.php
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@@ -1,13 +1,12 @@
<?php
/*!
* cssmin.php rev 91c5ea5
* Author: Tubal Martin - http://blog.margenn.com/
* cssmin.php rev ebaf67b 12/06/2013
* Author: Tubal Martin - http://tubalmartin.me/
* Repo: https://github.com/tubalmartin/YUI-CSS-compressor-PHP-port
*
* This is a PHP port of the Javascript port of the CSS minification tool
* distributed with YUICompressor, itself a port of the cssmin utility by
* Isaac Schlueter - http://foohack.com/
* This is a PHP port of the CSS minification tool distributed with YUICompressor,
* itself a port of the cssmin utility by Isaac Schlueter - http://foohack.com/
* Permission is hereby granted to use the PHP version under the same
* conditions as the YUICompressor.
*/
@@ -16,7 +15,7 @@
* YUI Compressor
* http://developer.yahoo.com/yui/compressor/
* Author: Julien Lecomte - http://www.julienlecomte.net/
* Copyright (c) 2011 Yahoo! Inc. All rights reserved.
* Copyright (c) 2013 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.
*/
@@ -27,6 +26,7 @@ class CSSmin
const TOKEN = '___YUICSSMIN_PRESERVED_TOKEN_';
const COMMENT = '___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_';
const CLASSCOLON = '___YUICSSMIN_PSEUDOCLASSCOLON___';
const QUERY_FRACTION = '___YUICSSMIN_QUERY_FRACTION___';
private $comments;
private $preserved_tokens;
@@ -99,7 +99,7 @@ class CSSmin
// the backtrack limit number (i.e. /(.*)/s) PCRE functions may fail silently
// returning NULL and $css would be empty.
$charset = '';
$charset_regexp = '/@charset [^;]+;/i';
$charset_regexp = '/(@charset)( [^;]+;)/i';
$css_chunks = array();
$css_chunk_length = 25000; // aprox size, not exact
$start_index = 0;
@@ -137,7 +137,7 @@ class CSSmin
$css_chunks[$i] = $this->minify($css_chunks[$i], $linebreak_pos);
// Keep the first @charset at-rule found
if (empty($charset) && preg_match($charset_regexp, $css_chunks[$i], $matches)) {
$charset = $matches[0];
$charset = strtolower($matches[1]) . $matches[2];
}
// Delete all @charset at-rules
$css_chunks[$i] = preg_replace($charset_regexp, '', $css_chunks[$i]);
@@ -229,7 +229,7 @@ class CSSmin
$css = preg_replace($placeholder, $token_tring, $css, 1);
// Preserve new lines for /*! important comments
$css = preg_replace('/\s*[\n\r\f]+\s*(\/\*'. $token_tring .')/S', self::NL.'$1', $css);
$css = preg_replace('/('. $token_tring .'\*\/)\s*[\n\r\f]+\s*/S', '$1'.self::NL, $css);
$css = preg_replace('/('. $token_tring .'\*\/)\s*[\n\r\f]+\s*/', '$1'.self::NL, $css);
continue;
}
@@ -265,7 +265,7 @@ class CSSmin
$css = preg_replace('/\s+/', ' ', $css);
// Shorten & preserve calculations calc(...) since spaces are important
$css = preg_replace_callback('/calc(\((?:[^\(\)]+|(?1))*\))/i', array($this, 'replace_calc'), $css);
$css = preg_replace_callback('/calc(\(((?:[^\(\)]+|(?1))*)\))/i', array($this, 'replace_calc'), $css);
// Replace positive sign from numbers preceded by : or a white-space before the leading space is removed
// +1.2em to 1.2em, +.8px to .8px, +2% to 2%
@@ -289,15 +289,35 @@ class CSSmin
// 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, 'replace_colon'), $css);
// Remove spaces before the things that should not have spaces before them.
$css = preg_replace('/\s+([\!\{\}\;\:\>\+\(\)\]\~\=,])/', '$1', $css);
// Restore spaces for !important
$css = preg_replace('/\!important/i', ' !important', $css);
// bring back the colon
$css = preg_replace('/' . self::CLASSCOLON . '/', ':', $css);
// retain space for special IE6 cases
$css = preg_replace('/\:first\-(line|letter)(\{|,)/i', ':first-$1 $2', $css);
$css = preg_replace_callback('/\:first\-(line|letter)(\{|,)/i', array($this, 'lowercase_pseudo_first'), $css);
// no space after the end of a preserved comment
$css = preg_replace('/\*\/ /', '*/', $css);
// lowercase some popular @directives
$css = preg_replace_callback('/@(font-face|import|(?:-(?:atsc|khtml|moz|ms|o|wap|webkit)-)?keyframe|media|page|namespace)/i', array($this, 'lowercase_directives'), $css);
// lowercase some more common pseudo-elements
$css = preg_replace_callback('/:(active|after|before|checked|disabled|empty|enabled|first-(?:child|of-type)|focus|hover|last-(?:child|of-type)|link|only-(?:child|of-type)|root|:selection|target|visited)/i', array($this, 'lowercase_pseudo_elements'), $css);
// lowercase some more common functions
$css = preg_replace_callback('/:(lang|not|nth-child|nth-last-child|nth-last-of-type|nth-of-type|(?:-(?:moz|webkit)-)?any)\(/i', array($this, 'lowercase_common_functions'), $css);
// lower case some common function that can be values
// NOTE: rgb() isn't useful as we replace with #hex later, as well as and() is already done for us
$css = preg_replace_callback('/([:,\( ]\s*)(attr|color-stop|from|rgba|to|url|(?:-(?:atsc|khtml|moz|ms|o|wap|webkit)-)?(?:calc|max|min|(?:repeating-)?(?:linear|radial)-gradient)|-webkit-gradient)/iS', array($this, 'lowercase_common_functions_values'), $css);
// Put the space back in some cases, to support stuff like
// @media screen and (-webkit-min-device-pixel-ratio:0){
$css = preg_replace('/\band\(/i', 'and (', $css);
@@ -314,18 +334,19 @@ class CSSmin
$css = preg_replace('/(\*[a-z0-9\-]+\s*\:[^;\}]+)(\})/', '$1;$2', $css);
// Replace 0 length units 0(px,em,%) with 0.
$css = preg_replace('/((?<!\\\\)\:|\s)\-?0(?:em|ex|ch|rem|vw|vh|vm|vmin|cm|mm|in|px|pt|pc|%)/iS', '${1}0', $css);
$css = preg_replace('/(^|[^0-9])(?:0?\.)?0(?:em|ex|ch|rem|vw|vh|vm|vmin|cm|mm|in|px|pt|pc|%|deg|g?rad|m?s|k?hz)/iS', '${1}0', $css);
// Replace 0 0; or 0 0 0; or 0 0 0 0; with 0.
$css = preg_replace('/\:0(?: 0){1,3}(;|\})/', ':0$1', $css);
$css = preg_replace('/\:0(?: 0){1,3}(;|\}| \!)/', ':0$1', $css);
// Fix for issue: #2528142
// Replace text-shadow:0; with text-shadow:0 0 0;
$css = preg_replace('/(text-shadow\:0)(;|\})/ie', "strtolower('$1 0 0$2')", $css);
$css = preg_replace('/(text-shadow\:0)(;|\}| \!)/i', '$1 0 0$2', $css);
// Replace background-position:0; with background-position:0 0;
// same for transform-origin
$css = preg_replace('/(background\-position|(?:webkit|moz|o|ms|)\-?transform\-origin)\:0(;|\})/ieS', "strtolower('$1:0 0$2')", $css);
// Changing -webkit-mask-position: 0 0 to just a single 0 will result in the second parameter defaulting to 50% (center)
$css = preg_replace('/(background\-position|webkit-mask-position|(?:webkit|moz|o|ms|)\-?transform\-origin)\:0(;|\}| \!)/iS', '$1:0 0$2', $css);
// 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)
@@ -337,14 +358,21 @@ class CSSmin
$css = $this->compress_hex_colors($css);
// border: none to border:0, outline: none to outline:0
$css = preg_replace('/(border\-?(?:top|right|bottom|left|)|outline)\:none(;|\})/ieS', "strtolower('$1:0$2')", $css);
$css = preg_replace('/(border\-?(?:top|right|bottom|left|)|outline)\:none(;|\}| \!)/iS', '$1:0$2', $css);
// shorter opacity IE filter
$css = preg_replace('/progid\:DXImageTransform\.Microsoft\.Alpha\(Opacity\=/i', 'alpha(opacity=', $css);
// Find a fraction that is used for Opera's -o-device-pixel-ratio query
// Add token to add the "\" back in later
$css = preg_replace('/\(([a-z\-]+):([0-9]+)\/([0-9]+)\)/i', '($1:$2'. self::QUERY_FRACTION .'$3)', $css);
// Remove empty rules.
$css = preg_replace('/[^\};\{\/]+\{\}/S', '', $css);
// Add "/" back to fix Opera -o-device-pixel-ratio query
$css = preg_replace('/'. self::QUERY_FRACTION .'/', '/', $css);
// 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.
@@ -367,6 +395,9 @@ class CSSmin
// Restore new lines for /*! important comments
$css = preg_replace('/'. self::NL .'/', "\n", $css);
// Lowercase all uppercase properties
$css = preg_replace_callback('/(\{|\;)([A-Z\-]+)(\:)/', array($this, 'lowercase_properties'), $css);
// restore preserved comments and strings
for ($i = 0, $max = count($this->preserved_tokens); $i < $max; $i++) {
$css = preg_replace('/' . self::TOKEN . $i . '___/', $this->preserved_tokens[$i], $css, 1);
@@ -422,10 +453,10 @@ class CSSmin
}
// Enough searching, start moving stuff over to the buffer
$sb[] = $this->substring($css, $append_index, $index);
$sb[] = $this->str_slice($css, $append_index, $index);
if ($found_terminator) {
$token = $this->substring($css, $start_index, $end_index);
$token = $this->str_slice($css, $start_index, $end_index);
$token = preg_replace('/\s+/', '', $token);
$this->preserved_tokens[] = $token;
@@ -435,14 +466,14 @@ class CSSmin
$append_index = $end_index + 1;
} else {
// No end terminator found, re-add the whole match. Should we throw/warn here?
$sb[] = $this->substring($css, $index, $last_index);
$sb[] = $this->str_slice($css, $index, $last_index);
$append_index = $last_index;
}
$offset = $last_index;
}
$sb[] = $this->substring($css, $append_index);
$sb[] = $this->str_slice($css, $append_index);
return implode('', $sb);
}
@@ -475,6 +506,7 @@ class CSSmin
'#800000' => 'maroon',
'#000080' => 'navy',
'#808000' => 'olive',
'#ffa500' => 'orange',
'#800080' => 'purple',
'#c0c0c0' => 'silver',
'#008080' => 'teal',
@@ -484,9 +516,9 @@ class CSSmin
while (preg_match($pattern, $css, $m, 0, $offset)) {
$index = $this->index_of($css, $m[0], $offset);
$last_index = $index + strlen($m[0]);
$is_filter = (bool) $m[1];
$is_filter = $m[1] !== null && $m[1] !== '';
$sb[] = $this->substring($css, $_index, $index);
$sb[] = $this->str_slice($css, $_index, $index);
if ($is_filter) {
// Restore, maintain case, otherwise filter will break
@@ -508,7 +540,7 @@ class CSSmin
$_index = $offset = $last_index - strlen($m[8]);
}
$sb[] = $this->substring($css, $_index);
$sb[] = $this->str_slice($css, $_index);
return implode('', $sb);
}
@@ -546,8 +578,8 @@ class CSSmin
private function replace_calc($matches)
{
$this->preserved_tokens[] = preg_replace('/\s?([\*\/\(\),])\s?/', '$1', $matches[0]);
return self::TOKEN . (count($this->preserved_tokens) - 1) . '___';
$this->preserved_tokens[] = trim(preg_replace('/\s*([\*\/\(\),])\s*/', '$1', $matches[2]));
return 'calc('. self::TOKEN . (count($this->preserved_tokens) - 1) . '___' . ')';
}
private function rgb_to_hex($matches)
@@ -601,6 +633,36 @@ class CSSmin
return $this->rgb_to_hex(array('', $r.','.$g.','.$b, $matches[2]));
}
private function lowercase_pseudo_first($matches)
{
return ':first-'. strtolower($matches[1]) .' '. $matches[2];
}
private function lowercase_directives($matches)
{
return '@'. strtolower($matches[1]);
}
private function lowercase_pseudo_elements($matches)
{
return ':'. strtolower($matches[1]);
}
private function lowercase_common_functions($matches)
{
return ':'. strtolower($matches[1]) .'(';
}
private function lowercase_common_functions_values($matches)
{
return $matches[1] . strtolower($matches[2]);
}
private function lowercase_properties($matches)
{
return $matches[1].strtolower($matches[2]).$matches[3];
}
/* HELPERS
* ---------------------------------------------------------------------------------------------
*/
@@ -640,38 +702,6 @@ class CSSmin
return ($index !== FALSE) ? $index : -1;
}
/**
* PHP port of Javascript's "substring" function
* Author: Tubal Martin http://blog.margenn.com
* Tests: http://margenn.com/tubal/substring/
*
* @param string $str
* @param int $from index
* @param int|bool $to index (optional)
* @return string
*/
private function substring($str, $from = 0, $to = FALSE)
{
if ($to !== FALSE) {
if ($from == $to || ($from <= 0 && $to < 0)) {
return '';
}
if ($from > $to) {
$from_copy = $from;
$from = $to;
$to = $from_copy;
}
}
if ($from < 0) {
$from = 0;
}
$substring = ($to === FALSE) ? substr($str, $from) : substr($str, $from, $to - $from);
return ($substring === FALSE) ? '' : $substring;
}
/**
* PHP port of Javascript's "slice" function for strings only
* Author: Tubal Martin http://blog.margenn.com