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a45e4a3d8d
CSS/UriRewriter.php : unit tests Minify/ImportProcessor.php : unit tests (need JS tests) Minify/CSS.php : refactoring using CommentPreserver.php Minify/Javascript.php : refactoring using CommentPreserver.php Minify/Lines.php : simplification
108 lines
3.3 KiB
PHP
108 lines
3.3 KiB
PHP
<?php
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/**
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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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* Rewrite file relative URIs as root relative in CSS files
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*
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* @param string $css
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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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* the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']).
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*
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* @return string
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*/
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public static function rewrite($css, $currentDir, $docRoot = null)
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{
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self::$_docRoot = $docRoot
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? $docRoot
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: $_SERVER['DOCUMENT_ROOT'];
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self::$_docRoot = realpath(self::$_docRoot);
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self::$_currentDir = realpath($currentDir);
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// remove ws around urls
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$css = preg_replace('/
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url\\( # url(
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\\s*
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([^\\)]+?) # 1 = URI (really just a bunch of non right parenthesis)
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\\s*
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\\) # )
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/x', 'url($1)', $css);
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// rewrite
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$css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
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,array('Minify_CSS_UriRewriter', '_uriCB'), $css);
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$css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
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,array('Minify_CSS_UriRewriter', '_uriCB'), $css);
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return $css;
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}
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/**
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* @var string directory of this stylesheet
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*/
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private static $_currentDir = '';
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/**
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* @var string DOC_ROOT
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*/
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private static $_docRoot = '';
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private static function _uriCB($m)
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{
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$isImport = ($m[0][0] === '@');
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if ($isImport) {
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$quoteChar = $m[1];
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$uri = $m[2];
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} else {
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// is url()
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// $m[1] is either quoted or not
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$quoteChar = ($m[1][0] === "'" || $m[1][0] === '"')
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? $m[1][0]
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: '';
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$uri = ($quoteChar === '')
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? $m[1]
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: substr($m[1], 1, strlen($m[1]) - 2);
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}
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if ('/' !== $uri[0]) {
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if (strpos($uri, '//') > 0) {
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// probably starts with protocol, do not alter
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} else {
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// it's a file relative URI!
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// prepend path with current dir separator (OS-independent)
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$path = strtr(self::$_currentDir, '/', DIRECTORY_SEPARATOR)
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. DIRECTORY_SEPARATOR . strtr($uri, '/', DIRECTORY_SEPARATOR);
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// strip doc root
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$path = substr($path, strlen(self::$_docRoot));
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// fix to root-relative URI
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$uri = strtr($path, DIRECTORY_SEPARATOR, '/');
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// eat .
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$uri = str_replace('/./', '/', $uri);
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// eat ..
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while (preg_match('@/[^/\\.]+/\\.\\./@', $uri, $m)) {
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$uri = str_replace($m[0], '/', $uri);
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}
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}
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}
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if ($isImport) {
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return "@import {$quoteChar}{$uri}{$quoteChar}";
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} else {
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return "url({$quoteChar}{$uri}{$quoteChar})";
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}
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}
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}
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