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<?php
/**
* Class Minify_CSS
* @package Minify
*/
/**
* Minify CSS
*
* This class uses Minify_CSS_Compressor and Minify_CSS_UriRewriter to
* minify CSS and rewrite relative URIs.
*
* @package Minify
* @author Stephen Clay <steve@mrclay.org>
* @author http://code.google.com/u/1stvamp/ (Issue 64 patch)
*/
class Minify_CSS {
/**
* Minify a CSS string
*
* @param string $css
*
* @param array $options available options:
*
* 'preserveComments': (default true) multi-line comments that begin
* with "/*!" will be preserved with newlines before and after to
* enhance readability.
*
* 'prependRelativePath': (default null) if given, this string will be
* prepended to all relative URIs in import/url declarations
*
* 'currentDir': (default null) if given, this is assumed to be the
* directory of the current CSS file. Using this, minify will rewrite
* all relative URIs in import/url declarations to correctly point to
* the desired files. For this to work, the files *must* exist and be
* visible by the PHP process.
*
* 'symlinks': (default = array()) If the CSS file is stored in
* a symlink-ed directory, provide an array of link paths to
* target paths, where the link paths are within the document root. Because
* paths need to be normalized for this to work, use "//" to substitute
* the doc root in the link paths (the array keys). E.g.:
* <code>
* array('//symlink' => '/real/target/path') // unix
* array('//static' => 'D:\\staticStorage') // Windows
* </code>
*
* @return string
*/
public static function minify($css, $options = array()) {
w3_require_once(W3TC_LIB_MINIFY_DIR . '/Minify/CSS/Compressor.php');
if (isset($options['preserveComments']) && $options['preserveComments']) {
w3_require_once(W3TC_LIB_MINIFY_DIR . '/Minify/CommentPreserver.php');
$css = Minify_CommentPreserver::process(
$css,
array('Minify_CSS_Compressor', 'process'),
array($options)
);
} else {
$css = Minify_CSS_Compressor::process($css, $options);
}
w3_require_once(W3TC_LIB_MINIFY_DIR . '/Minify/CSS/UriRewriter.php');
$css = Minify_CSS_UriRewriter::rewrite($css, $options);
return $css;
}
}
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