From 4478c903155a5cc50b518b8bc8399c02a91e27c1 Mon Sep 17 00:00:00 2001
From: Michele Locati <michele@locati.it>
Date: Fri, 2 Sep 2016 12:50:22 +0200
Subject: [PATCH 1/2] Avoid calling realpath on URLs

Calling realpath on URLs like //fonts.googleapis.com/css takes ages on
Windows: let's avoid that...
---
 lessc.inc.php            |  4 ++--
 lib/Less/Parser.php      | 14 +++++++++++++-
 lib/Less/Tree/Import.php |  2 +-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/lessc.inc.php b/lessc.inc.php
index bd4bc37a..e6cdf20a 100644
--- a/lessc.inc.php
+++ b/lessc.inc.php
@@ -150,7 +150,7 @@ public function compileFile( $fname, $outFname = null ) {
 		$oldImport = $this->importDir;
 
 		$this->importDir = (array)$this->importDir;
-		$this->importDir[] = realpath( $pi['dirname'] ).'/';
+		$this->importDir[] = Less_Parser::AbsPath( $pi['dirname'] ).'/';
 
 		$this->allParsedFiles = array();
 		$this->addParsedFile( $fname );
@@ -271,6 +271,6 @@ public function allParsedFiles() {
 	}
 
 	protected function addParsedFile( $file ) {
-		$this->allParsedFiles[realpath( $file )] = filemtime( $file );
+		$this->allParsedFiles[Less_Parser::AbsPath( $file )] = filemtime( $file );
 	}
 }
diff --git a/lib/Less/Parser.php b/lib/Less/Parser.php
index 1c65f982..67b84fc4 100644
--- a/lib/Less/Parser.php
+++ b/lib/Less/Parser.php
@@ -352,7 +352,7 @@ public function parseFile( $filename, $uri_root = '', $returnRoot = false){
 
 
 		if( $filename ){
-			$filename = self::WinPath(realpath($filename));
+			$filename = self::AbsPath($filename, true);
 		}
 		$uri_root = self::WinPath($uri_root);
 
@@ -2660,6 +2660,18 @@ public static function WinPath($path){
 		return str_replace('\\', '/', $path);
 	}
 
+	public static function AbsPath($path, $winPath = false){
+		if (preg_match('_^(https?:)?//\\w+(\\.\\w+)+/\\w+_', $path)) {
+			return $winPath ? '' : false;
+		} else {
+			$path = realpath($path);
+			if ($winPath) {
+				$path = self::WinPath($path);
+			}
+			return $path;
+		}
+	}
+
 	public function CacheEnabled(){
 		return (Less_Parser::$options['cache_method'] && (Less_Cache::$cache_dir || (Less_Parser::$options['cache_method'] == 'callback')));
 	}
diff --git a/lib/Less/Tree/Import.php b/lib/Less/Tree/Import.php
index 4d28abca..4e14afe7 100644
--- a/lib/Less/Tree/Import.php
+++ b/lib/Less/Tree/Import.php
@@ -289,7 +289,7 @@ public function ParseImport( $full_path, $uri, $env ){
 	 */
 	private function Skip($path, $env){
 
-		$path = Less_Parser::winPath(realpath($path));
+		$path = Less_Parser::AbsPath($path, true);
 
 		if( $path && Less_Parser::FileParsed($path) ){
 

From 3f4db8fa880c673c02c3b7174a4b8378b1b6c030 Mon Sep 17 00:00:00 2001
From: Michele Locati <michele@locati.it>
Date: Fri, 2 Sep 2016 12:54:28 +0200
Subject: [PATCH 2/2] Call preg_match only if necessary

---
 lib/Less/Parser.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Less/Parser.php b/lib/Less/Parser.php
index 67b84fc4..eba75742 100644
--- a/lib/Less/Parser.php
+++ b/lib/Less/Parser.php
@@ -2661,7 +2661,7 @@ public static function WinPath($path){
 	}
 
 	public static function AbsPath($path, $winPath = false){
-		if (preg_match('_^(https?:)?//\\w+(\\.\\w+)+/\\w+_', $path)) {
+		if (strpos($path, '//') !== false && preg_match('_^(https?:)?//\\w+(\\.\\w+)+/\\w+_', $path)) {
 			return $winPath ? '' : false;
 		} else {
 			$path = realpath($path);