fixed 'base search dir' + fixed 'blank line inserted' when line before ends with colon

check_cs

@@ -26,7 +26,7 @@ $finder
     ->name('*.xml')
     ->name('*.xml.dist')
     ->name('*.yml')
-    ->in(__DIR__.'/src', __DIR__.'/tests')
+    ->in(__DIR__)
     ->notName(basename(__FILE__))
     ->exclude('.git')
     ->exclude('vendor')
@@ -34,6 +34,9 @@ $finder
 
 $exit = 0;
 foreach ($finder as $file) {
+
+    /* @var $file Symfony\Component\Finder\SplFileInfo */
+
     // These files are skipped because tests would break
     if (in_array($file->getRelativePathname(), array(
         'tests/Symfony/Tests/Component/ClassLoader/ClassCollectionLoaderTest.php',
@@ -68,11 +71,13 @@ foreach ($finder as $file) {
 
     // [Structure] Add a blank line before return statements
     $new = preg_replace_callback('/(^.*$)\n(^ +return)/m', function ($match) {
-        // don't add it if the previous line is
-        //  * {
-        //  * :
-        //  * already blank line
-        if (preg_match('#(\{ *$|^$|^ *//|\:)#', $match[1])) {
+        // don't add it if the previous line is ...
+        if (
+            preg_match('/\{$/m',   $match[1]) || // ... ending with an opening brace
+            preg_match('/\:$/m',   $match[1]) || // ... ending with a colon (e.g. a case statement)
+            preg_match('%^ *//%m', $match[1]) || // ... an inline comment
+            preg_match('/^$/m',    $match[1])    // ... already blank
+        ) {
             return $match[1]."\n".$match[2];
         }
 
@@ -80,7 +85,7 @@ foreach ($finder as $file) {
     }, $new);
 
     // [Structure] A file must always ends with a linefeed character
-    if (strlen($new) && "\n" != $new[strlen($new) - 1]) {
+    if (strlen($new) && "\n" != substr($new, -1)) {
         $new .= "\n";
     }