added a script to clean up the code and follow CS

check_cs.php

@@ -0,0 +1,74 @@
+#!/usr/bin/php
+<?php
+/*
+ * Coding Standards (a.k.a. CS)
+ *
+ * This script is designed to clean up the source files and thus follow coding
+ * conventions.
+ *
+ * @see http://symfony.com/doc/2.0/contributing/code/standards.html
+ *
+ */
+
+require_once __DIR__.'/autoload.php.dist';
+
+use Symfony\Component\Finder\Finder;
+
+$finder = new Finder();
+$finder
+    ->files()
+    ->name('*.md')
+    ->name('*.php')
+    ->name('*.php.dist')
+    ->name('*.twig')
+    ->name('*.xml')
+    ->name('*.xml.dist')
+    ->name('*.yml')
+    ->in(__DIR__)
+    ->notName(basename(__FILE__))
+    ->exclude('.git')
+    ->exclude('vendor')
+;
+
+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',
+        'tests/Symfony/Tests/Component/DependencyInjection/Fixtures/containers/container9.php',
+        'tests/Symfony/Tests/Component/DependencyInjection/Fixtures/includes/foo.php',
+        'tests/Symfony/Tests/Component/DependencyInjection/Fixtures/php/services9.php',
+        'tests/Symfony/Tests/Component/DependencyInjection/Fixtures/yaml/services9.yml',
+        'tests/Symfony/Tests/Component/Routing/Fixtures/dumper/url_matcher1.php',
+        'tests/Symfony/Tests/Component/Routing/Fixtures/dumper/url_matcher2.php',
+        'tests/Symfony/Tests/Component/Yaml/Fixtures/sfTests.yml',
+    ))) {
+        continue;
+    }
+
+    $old = file_get_contents($file->getRealpath());
+
+    $new = $old;
+
+    // [Structure] Never use short tags (<?);
+    $new = str_replace('<? ', '<?php ', $new);
+
+    // [Structure] Indentation is done by steps of four spaces (tabs are never allowed);
+    $new = preg_replace_callback('/^( *)(\t+)/m', function ($matches) use ($new) {
+        return $matches[1] . str_repeat('    ', strlen($matches[2]));
+    }, $new);
+
+    // [Structure] Use the linefeed character (0x0A) to end lines;
+    $new = str_replace("\r\n", "\n", $new);
+
+    // [Structure] Don't add trailing spaces at the end of lines;
+    $new = preg_replace('/[ \t]*$/m', '', $new);
+
+    // [Structure] Add a blank line before return statements;
+    $new = preg_replace('/([^    {|\n]$)(\n        return .+?$\n    \}$)/m', '$1'."\n".'$2', $new);
+
+    if ($new != $old) {
+        file_put_contents($file->getRealpath(), $new);
+        echo $file->getRelativePathname() . PHP_EOL;
+    }
+}