forked from extern/egroupware
100 lines
3.3 KiB
PHP
100 lines
3.3 KiB
PHP
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<?php
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/**
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* Class Minify_CSS
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* @package Minify
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*/
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/**
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* Minify CSS
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*
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* This class uses Minify_CSS_Compressor and Minify_CSS_UriRewriter to
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* minify CSS and rewrite relative URIs.
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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 {
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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 available options:
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*
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* 'preserveComments': (default true) multi-line comments that begin
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* with "/*!" will be preserved with newlines before and after to
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* enhance readability.
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*
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* 'removeCharsets': (default true) remove all @charset at-rules
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*
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* 'prependRelativePath': (default null) if given, this string will be
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* prepended to all relative URIs in import/url declarations
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*
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* 'currentDir': (default null) if given, this is assumed to be the
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* directory of the current CSS file. Using this, minify will rewrite
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* all relative URIs in import/url declarations to correctly point to
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* the desired files. For this to work, the files *must* exist and be
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* visible by the PHP process.
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*
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* '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
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* 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
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* the doc root in the link paths (the array keys). E.g.:
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* <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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* 'docRoot': (default = $_SERVER['DOCUMENT_ROOT'])
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* see Minify_CSS_UriRewriter::rewrite
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*
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* @return string
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*/
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public static function minify($css, $options = array())
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{
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$options = array_merge(array(
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'removeCharsets' => true,
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'preserveComments' => true,
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'currentDir' => null,
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'docRoot' => $_SERVER['DOCUMENT_ROOT'],
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'prependRelativePath' => null,
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'symlinks' => array(),
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), $options);
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if ($options['removeCharsets']) {
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$css = preg_replace('/@charset[^;]+;\\s*/', '', $css);
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}
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require_once 'Minify/CSS/Compressor.php';
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if (! $options['preserveComments']) {
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$css = Minify_CSS_Compressor::process($css, $options);
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} else {
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require_once 'Minify/CommentPreserver.php';
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$css = Minify_CommentPreserver::process(
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$css
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,array('Minify_CSS_Compressor', 'process')
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,array($options)
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);
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}
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if (! $options['currentDir'] && ! $options['prependRelativePath']) {
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return $css;
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}
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require_once 'Minify/CSS/UriRewriter.php';
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if ($options['currentDir']) {
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return Minify_CSS_UriRewriter::rewrite(
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$css
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,$options['currentDir']
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,$options['docRoot']
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,$options['symlinks']
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);
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} else {
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return Minify_CSS_UriRewriter::prepend(
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$css
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,$options['prependRelativePath']
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);
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}
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}
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}
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