Version 3.4.5
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@@ -12,21 +12,15 @@
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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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*
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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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* In CSS content, rewrite file relative URIs as root relative
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*
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* @param string $css
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*
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@@ -83,7 +77,7 @@ class Minify_CSS_UriRewriter {
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}
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/**
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* Prepend a path to relative URIs in CSS files
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* In CSS content, prepend a path to relative URIs
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*
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* @param string $css
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*
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@@ -107,73 +101,8 @@ class Minify_CSS_UriRewriter {
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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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/**
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* @var array directory replacements to map symlink targets back to their
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* source (within the document root) E.g. '/var/www/symlink' => '/var/realpath'
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*/
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private static $_symlinks = array();
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/**
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* @var string path to prepend
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*/
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private static $_prependPath = null;
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private static function _trimUrls($css)
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{
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return preg_replace('/
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url\\( # url(
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\\s*
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([^\\)]+?) # 1 = URI (assuming does not contain ")")
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\\s*
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\\) # )
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/x', 'url($1)', $css);
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}
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private static function _processUriCB($m)
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{
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// $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
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$isImport = ($m[0][0] === '@');
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// determine URI and the quote character (if any)
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if ($isImport) {
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$quoteChar = $m[1];
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$uri = $m[2];
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} else {
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// $m[1] is either quoted or not
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$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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// analyze URI
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if ('/' !== $uri[0] // root-relative
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&& false === strpos($uri, '//') // protocol (non-data)
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&& 0 !== strpos($uri, 'data:') // data protocol
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) {
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// URI is file-relative: rewrite depending on options
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$uri = (self::$_prependPath !== null)
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? (self::$_prependPath . $uri)
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: self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks);
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}
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return $isImport
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? "@import {$quoteChar}{$uri}{$quoteChar}"
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: "url({$quoteChar}{$uri}{$quoteChar})";
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}
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/**
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* Rewrite a file relative URI as root relative
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* Get a root relative URI from a file relative URI
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*
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* <code>
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* Minify_CSS_UriRewriter::rewriteRelative(
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@@ -219,16 +148,16 @@ class Minify_CSS_UriRewriter {
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self::$debugText .= "file-relative URI : {$uri}\n"
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. "path prepended : {$path}\n";
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// "unresolve" a symlink back to doc root
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foreach ($symlinks as $link => $target) {
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if (0 === strpos($path, $target)) {
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// replace $target with $link
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// "unresolve" a symlink back to doc root
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foreach ($symlinks as $link => $target) {
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if (0 === strpos($path, $target)) {
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// replace $target with $link
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$path = $link . substr($path, strlen($target));
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self::$debugText .= "symlink unresolved : {$path}\n";
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self::$debugText .= "symlink unresolved : {$path}\n";
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break;
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}
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break;
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}
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}
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// strip doc root
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$path = substr($path, strlen($realDocRoot));
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@@ -236,21 +165,39 @@ class Minify_CSS_UriRewriter {
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self::$debugText .= "docroot stripped : {$path}\n";
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// fix to root-relative URI
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$uri = strtr($path, '/\\', '//');
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// remove /./ and /../ where possible
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$uri = str_replace('/./', '/', $uri);
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// inspired by patch from Oleg Cherniy
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do {
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$uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed);
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} while ($changed);
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$uri = self::removeDots($uri);
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self::$debugText .= "traversals removed : {$uri}\n\n";
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return $uri;
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}
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/**
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* Remove instances of "./" and "../" where possible from a root-relative URI
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*
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* @param string $uri
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*
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* @return string
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*/
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public static function removeDots($uri)
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{
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$uri = str_replace('/./', '/', $uri);
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// inspired by patch from Oleg Cherniy
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do {
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$uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed);
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} while ($changed);
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return $uri;
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}
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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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*
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* @var string
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*/
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protected static $className = 'Minify_CSS_UriRewriter';
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/**
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* Get realpath with any trailing slash removed. If realpath() fails,
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* just remove the trailing slash.
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@@ -267,4 +214,97 @@ class Minify_CSS_UriRewriter {
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}
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return rtrim($path, '/\\');
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}
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/**
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* Directory of this stylesheet
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*
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* @var string
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*/
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private static $_currentDir = '';
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/**
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* DOC_ROOT
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*
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* @var string
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*/
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private static $_docRoot = '';
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/**
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* directory replacements to map symlink targets back to their
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* source (within the document root) E.g. '/var/www/symlink' => '/var/realpath'
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*
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* @var array
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*/
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private static $_symlinks = array();
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/**
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* Path to prepend
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*
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* @var string
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*/
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private static $_prependPath = null;
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/**
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* @param string $css
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*
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* @return string
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*/
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private static function _trimUrls($css)
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{
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return preg_replace('/
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url\\( # url(
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\\s*
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([^\\)]+?) # 1 = URI (assuming does not contain ")")
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\\s*
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\\) # )
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/x', 'url($1)', $css);
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}
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/**
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* @param array $m
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*
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* @return string
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*/
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private static function _processUriCB($m)
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{
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// $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
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$isImport = ($m[0][0] === '@');
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// determine URI and the quote character (if any)
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if ($isImport) {
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$quoteChar = $m[1];
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$uri = $m[2];
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} else {
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// $m[1] is either quoted or not
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$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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// analyze URI
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if ('/' !== $uri[0] // root-relative
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&& false === strpos($uri, '//') // protocol (non-data)
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&& 0 !== strpos($uri, 'data:') // data protocol
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) {
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// URI is file-relative: rewrite depending on options
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if (self::$_prependPath === null) {
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$uri = self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks);
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} else {
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$uri = self::$_prependPath . $uri;
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if ($uri[0] === '/') {
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$root = '';
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$rootRelative = $uri;
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$uri = $root . self::removeDots($rootRelative);
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} elseif (preg_match('@^((https?\:)?//([^/]+))/@', $uri, $m) && (false !== strpos($m[3], '.'))) {
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$root = $m[1];
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$rootRelative = substr($uri, strlen($root));
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$uri = $root . self::removeDots($rootRelative);
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}
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}
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}
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return $isImport
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? "@import {$quoteChar}{$uri}{$quoteChar}"
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: "url({$quoteChar}{$uri}{$quoteChar})";
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}
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}
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