mirror of
https://github.com/alchemy-fr/Phraseanet.git
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V 3.5 RC 1
This commit is contained in:
Romain Neutron
256
www/include/minify/lib/Minify/CSS/Compressor.php
Normal file
256
www/include/minify/lib/Minify/CSS/Compressor.php
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@@ -0,0 +1,256 @@
|
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<?php
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/**
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* Class Minify_CSS_Compressor
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* @package Minify
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*/
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/**
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* Compress CSS
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*
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* This is a heavy regex-based removal of whitespace, unnecessary
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* comments and tokens, and some CSS value minimization, where practical.
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* Many steps have been taken to avoid breaking comment-based hacks,
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* including the ie5/mac filter (and its inversion), but expect tricky
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* hacks involving comment tokens in 'content' value strings to break
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* minimization badly. A test suite is available.
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*
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* @package Minify
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* @author Stephen Clay <steve@mrclay.org>
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* @author http://code.google.com/u/1stvamp/ (Issue 64 patch)
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*/
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class Minify_CSS_Compressor {
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/**
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* Minify a CSS string
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*
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* @param string $css
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*
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* @param array $options (currently ignored)
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*
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* @return string
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*/
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public static function process($css, $options = array())
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{
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$obj = new Minify_CSS_Compressor($options);
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return $obj->_process($css);
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}
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/**
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* @var array options
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*/
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protected $_options = null;
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/**
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* @var bool Are we "in" a hack?
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*
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* I.e. are some browsers targetted until the next comment?
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*/
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protected $_inHack = false;
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/**
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* Constructor
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*
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* @param array $options (currently ignored)
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*
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* @return null
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*/
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private function __construct($options) {
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$this->_options = $options;
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}
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/**
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* Minify a CSS string
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*
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* @param string $css
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*
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* @return string
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*/
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protected function _process($css)
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{
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$css = str_replace("\r\n", "\n", $css);
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// preserve empty comment after '>'
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// http://www.webdevout.net/css-hacks#in_css-selectors
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$css = preg_replace('@>/\\*\\s*\\*/@', '>/*keep*/', $css);
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// preserve empty comment between property and value
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// http://css-discuss.incutio.com/?page=BoxModelHack
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$css = preg_replace('@/\\*\\s*\\*/\\s*:@', '/*keep*/:', $css);
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$css = preg_replace('@:\\s*/\\*\\s*\\*/@', ':/*keep*/', $css);
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// apply callback to all valid comments (and strip out surrounding ws
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$css = preg_replace_callback('@\\s*/\\*([\\s\\S]*?)\\*/\\s*@'
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,array($this, '_commentCB'), $css);
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// remove ws around { } and last semicolon in declaration block
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$css = preg_replace('/\\s*{\\s*/', '{', $css);
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$css = preg_replace('/;?\\s*}\\s*/', '}', $css);
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// remove ws surrounding semicolons
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$css = preg_replace('/\\s*;\\s*/', ';', $css);
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// remove ws around urls
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$css = preg_replace('/
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url\\( # url(
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\\s*
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([^\\)]+?) # 1 = the URL (really just a bunch of non right parenthesis)
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\\s*
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\\) # )
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/x', 'url($1)', $css);
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// remove ws between rules and colons
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$css = preg_replace('/
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\\s*
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([{;]) # 1 = beginning of block or rule separator
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\\s*
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([\\*_]?[\\w\\-]+) # 2 = property (and maybe IE filter)
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\\s*
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:
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\\s*
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(\\b|[#\'"]) # 3 = first character of a value
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/x', '$1$2:$3', $css);
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// remove ws in selectors
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$css = preg_replace_callback('/
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(?: # non-capture
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\\s*
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[^~>+,\\s]+ # selector part
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\\s*
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[,>+~] # combinators
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)+
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\\s*
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[^~>+,\\s]+ # selector part
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{ # open declaration block
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/x'
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,array($this, '_selectorsCB'), $css);
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// minimize hex colors
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$css = preg_replace('/([^=])#([a-f\\d])\\2([a-f\\d])\\3([a-f\\d])\\4([\\s;\\}])/i'
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, '$1#$2$3$4$5', $css);
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// remove spaces between font families
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$css = preg_replace_callback('/font-family:([^;}]+)([;}])/'
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,array($this, '_fontFamilyCB'), $css);
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$css = preg_replace('/@import\\s+url/', '@import url', $css);
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// replace any ws involving newlines with a single newline
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$css = preg_replace('/[ \\t]*\\n+\\s*/', "\n", $css);
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// separate common descendent selectors w/ newlines (to limit line lengths)
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$css = preg_replace('/([\\w#\\.\\*]+)\\s+([\\w#\\.\\*]+){/', "$1\n$2{", $css);
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// Use newline after 1st numeric value (to limit line lengths).
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$css = preg_replace('/
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((?:padding|margin|border|outline):\\d+(?:px|em)?) # 1 = prop : 1st numeric value
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||||
\\s+
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/x'
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,"$1\n", $css);
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// prevent triggering IE6 bug: http://www.crankygeek.com/ie6pebug/
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$css = preg_replace('/:first-l(etter|ine)\\{/', ':first-l$1 {', $css);
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return trim($css);
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}
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/**
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* Replace what looks like a set of selectors
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*
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* @param array $m regex matches
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*
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* @return string
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*/
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protected function _selectorsCB($m)
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{
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// remove ws around the combinators
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return preg_replace('/\\s*([,>+~])\\s*/', '$1', $m[0]);
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}
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/**
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* Process a comment and return a replacement
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*
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* @param array $m regex matches
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*
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* @return string
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*/
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protected function _commentCB($m)
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{
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$hasSurroundingWs = (trim($m[0]) !== $m[1]);
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$m = $m[1];
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// $m is the comment content w/o the surrounding tokens,
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// but the return value will replace the entire comment.
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if ($m === 'keep') {
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return '/**/';
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}
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if ($m === '" "') {
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// component of http://tantek.com/CSS/Examples/midpass.html
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return '/*" "*/';
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}
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if (preg_match('@";\\}\\s*\\}/\\*\\s+@', $m)) {
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// component of http://tantek.com/CSS/Examples/midpass.html
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return '/*";}}/* */';
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}
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if ($this->_inHack) {
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// inversion: feeding only to one browser
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if (preg_match('@
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^/ # comment started like /*/
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\\s*
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(\\S[\\s\\S]+?) # has at least some non-ws content
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\\s*
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/\\* # ends like /*/ or /**/
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@x', $m, $n)) {
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// end hack mode after this comment, but preserve the hack and comment content
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$this->_inHack = false;
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return "/*/{$n[1]}/**/";
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}
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}
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if (substr($m, -1) === '\\') { // comment ends like \*/
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// begin hack mode and preserve hack
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$this->_inHack = true;
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return '/*\\*/';
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}
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if ($m !== '' && $m[0] === '/') { // comment looks like /*/ foo */
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// begin hack mode and preserve hack
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$this->_inHack = true;
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return '/*/*/';
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}
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if ($this->_inHack) {
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// a regular comment ends hack mode but should be preserved
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$this->_inHack = false;
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return '/**/';
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}
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// Issue 107: if there's any surrounding whitespace, it may be important, so
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// replace the comment with a single space
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return $hasSurroundingWs // remove all other comments
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? ' '
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: '';
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}
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/**
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* Process a font-family listing and return a replacement
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*
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* @param array $m regex matches
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*
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* @return string
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*/
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protected function _fontFamilyCB($m)
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{
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$m[1] = preg_replace('/
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\\s*
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(
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"[^"]+" # 1 = family in double qutoes
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|\'[^\']+\' # or 1 = family in single quotes
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|[\\w\\-]+ # or 1 = unquoted family
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)
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\\s*
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/x', '$1', $m[1]);
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return 'font-family:' . $m[1] . $m[2];
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}
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}
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@@ -1,75 +1,155 @@
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<?php
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/**
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* Class Minify_CSS_UriRewriter
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* Class Minify_CSS_UriRewriter
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* @package Minify
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*/
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/**
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* Rewrite file-relative URIs as root-relative in CSS files
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*
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* @todo: prepend() method
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*
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* @package Minify
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* @author Stephen Clay <steve@mrclay.org>
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*/
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class Minify_CSS_UriRewriter {
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/**
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* Defines which class to call as part of callbacks, change this
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* if you extend Minify_CSS_UriRewriter
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* @var string
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*/
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protected static $className = 'Minify_CSS_UriRewriter';
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/**
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* rewrite() and rewriteRelative() append debugging information here
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* @var string
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*/
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public static $debugText = '';
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/**
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* Rewrite file relative URIs as root relative in CSS files
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*
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*
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* @param string $css
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*
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*
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* @param string $currentDir The directory of the current CSS file.
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*
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* @param string $docRoot The document root of the web site in which
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* @param string $docRoot The document root of the web site in which
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* the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']).
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*
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*
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* @param array $symlinks (default = array()) If the CSS file is stored in
|
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* a symlink-ed directory, provide an array of link paths to
|
||||
* target paths, where the link paths are within the document root. Because
|
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* paths need to be normalized for this to work, use "//" to substitute
|
||||
* the doc root in the link paths (the array keys). E.g.:
|
||||
* <code>
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* array('//symlink' => '/real/target/path') // unix
|
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* array('//static' => 'D:\\staticStorage') // Windows
|
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* </code>
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||||
*
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||||
* @return string
|
||||
*/
|
||||
public static function rewrite($css, $currentDir, $docRoot = null)
|
||||
public static function rewrite($css, $currentDir, $docRoot = null, $symlinks = array())
|
||||
{
|
||||
self::$_docRoot = $docRoot
|
||||
? $docRoot
|
||||
: $_SERVER['DOCUMENT_ROOT'];
|
||||
self::$_docRoot = realpath(self::$_docRoot);
|
||||
self::$_currentDir = realpath($currentDir);
|
||||
|
||||
// remove ws around urls
|
||||
$css = preg_replace('/
|
||||
url\\( # url(
|
||||
\\s*
|
||||
([^\\)]+?) # 1 = URI (really just a bunch of non right parenthesis)
|
||||
\\s*
|
||||
\\) # )
|
||||
/x', 'url($1)', $css);
|
||||
|
||||
self::$_docRoot = self::_realpath(
|
||||
$docRoot ? $docRoot : $_SERVER['DOCUMENT_ROOT']
|
||||
);
|
||||
self::$_currentDir = self::_realpath($currentDir);
|
||||
self::$_symlinks = array();
|
||||
|
||||
// normalize symlinks
|
||||
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);
|
||||
|
||||
// rewrite
|
||||
$css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
|
||||
,array('Minify_CSS_UriRewriter', '_uriCB'), $css);
|
||||
,array(self::$className, '_processUriCB'), $css);
|
||||
$css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
|
||||
,array('Minify_CSS_UriRewriter', '_uriCB'), $css);
|
||||
,array(self::$className, '_processUriCB'), $css);
|
||||
|
||||
return $css;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Prepend a path to relative URIs in CSS files
|
||||
*
|
||||
* @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);
|
||||
|
||||
// append
|
||||
$css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
|
||||
,array(self::$className, '_processUriCB'), $css);
|
||||
$css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
|
||||
,array(self::$className, '_processUriCB'), $css);
|
||||
|
||||
self::$_prependPath = null;
|
||||
|
||||
return $css;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @var string directory of this stylesheet
|
||||
*/
|
||||
private static $_currentDir = '';
|
||||
|
||||
|
||||
/**
|
||||
* @var string DOC_ROOT
|
||||
*/
|
||||
private static $_docRoot = '';
|
||||
|
||||
private static function _uriCB($m)
|
||||
|
||||
/**
|
||||
* @var array directory replacements to map symlink targets back to their
|
||||
* source (within the document root) E.g. '/var/www/symlink' => '/var/realpath'
|
||||
*/
|
||||
private static $_symlinks = array();
|
||||
|
||||
/**
|
||||
* @var string path to prepend
|
||||
*/
|
||||
private static $_prependPath = null;
|
||||
|
||||
private static function _trimUrls($css)
|
||||
{
|
||||
return preg_replace('/
|
||||
url\\( # url(
|
||||
\\s*
|
||||
([^\\)]+?) # 1 = URI (assuming does not contain ")")
|
||||
\\s*
|
||||
\\) # )
|
||||
/x', 'url($1)', $css);
|
||||
}
|
||||
|
||||
private static function _processUriCB($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 {
|
||||
// is url()
|
||||
// $m[1] is either quoted or not
|
||||
$quoteChar = ($m[1][0] === "'" || $m[1][0] === '"')
|
||||
? $m[1][0]
|
||||
@@ -78,30 +158,116 @@ class Minify_CSS_UriRewriter {
|
||||
? $m[1]
|
||||
: substr($m[1], 1, strlen($m[1]) - 2);
|
||||
}
|
||||
if ('/' !== $uri[0]) {
|
||||
if (strpos($uri, '//') > 0) {
|
||||
// probably starts with protocol, do not alter
|
||||
} else {
|
||||
// it's a file relative URI!
|
||||
// prepend path with current dir separator (OS-independent)
|
||||
$path = strtr(self::$_currentDir, '/', DIRECTORY_SEPARATOR)
|
||||
. DIRECTORY_SEPARATOR . strtr($uri, '/', DIRECTORY_SEPARATOR);
|
||||
// strip doc root
|
||||
$path = substr($path, strlen(self::$_docRoot));
|
||||
// fix to root-relative URI
|
||||
$uri = strtr($path, DIRECTORY_SEPARATOR, '/');
|
||||
// remove /./ and /../ where possible
|
||||
$uri = str_replace('/./', '/', $uri);
|
||||
// inspired by patch from Oleg Cherniy
|
||||
do {
|
||||
$uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, -1, $changed);
|
||||
} while ($changed);
|
||||
// analyze URI
|
||||
if ('/' !== $uri[0] // root-relative
|
||||
&& false === strpos($uri, '//') // protocol (non-data)
|
||||
&& 0 !== strpos($uri, 'data:') // data protocol
|
||||
) {
|
||||
// URI is file-relative: rewrite depending on options
|
||||
$uri = (self::$_prependPath !== null)
|
||||
? (self::$_prependPath . $uri)
|
||||
: self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks);
|
||||
}
|
||||
|
||||
return $isImport
|
||||
? "@import {$quoteChar}{$uri}{$quoteChar}"
|
||||
: "url({$quoteChar}{$uri}{$quoteChar})";
|
||||
}
|
||||
|
||||
/**
|
||||
* Rewrite a file relative URI as root relative
|
||||
*
|
||||
* <code>
|
||||
* Minify_CSS_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
|
||||
* Minify_CSS_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)
|
||||
. 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 : {$path}\n";
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
if ($isImport) {
|
||||
return "@import {$quoteChar}{$uri}{$quoteChar}";
|
||||
} else {
|
||||
return "url({$quoteChar}{$uri}{$quoteChar})";
|
||||
// strip doc root
|
||||
$path = substr($path, strlen($realDocRoot));
|
||||
|
||||
self::$debugText .= "docroot stripped : {$path}\n";
|
||||
|
||||
// fix to root-relative URI
|
||||
|
||||
$uri = strtr($path, '/\\', '//');
|
||||
|
||||
// remove /./ and /../ where possible
|
||||
$uri = str_replace('/./', '/', $uri);
|
||||
// inspired by patch from Oleg Cherniy
|
||||
do {
|
||||
$uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed);
|
||||
} while ($changed);
|
||||
|
||||
self::$debugText .= "traversals removed : {$uri}\n\n";
|
||||
|
||||
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, '/\\');
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user