#45 Add StripComment stage for string preprocessor

src/StackFormation/PreProcessor/Stage/String/StripComments.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace StackFormation\PreProcessor\Stage\String;
+
+use StackFormation\PreProcessor\Stage\AbstractStringPreProcessorStage;
+
+class StripComments extends AbstractStringPreProcessorStage {
+
+    /**
+     * @param string $content
+     * @return string
+     */
+    public function invoke($content)
+    {
+        // there's a problem with '"http://example.com"' being converted to '"http:'
+        // $content = preg_replace('~//[^\r\n]*|/\*.*?\*/~s', '', $content);
+
+        // there's a problem with "arn:aws:s3:::my-bucket/*"
+        // $content = preg_replace('~/\*.*?\*/~s', '', $content);
+
+        // quick workaround: don't allow quotes
+        return preg_replace('~/\*[^"]*?\*/~s', '', $content);
+    }
+}