From e6347534e61b2e2a35480b772620561482bb5bcb Mon Sep 17 00:00:00 2001
From: Andrew Nicols <andrew@nicols.co.uk>
Date: Thu, 17 Apr 2014 10:44:36 +0800
Subject: [PATCH] Check the size of source files in the output file size check

---
 lib/tasks/check.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/tasks/check.js b/lib/tasks/check.js
index c5ac67c..f3084e8 100644
--- a/lib/tasks/check.js
+++ b/lib/tasks/check.js
@@ -3,12 +3,21 @@ Copyright (c) 2012, Yahoo! Inc. All rights reserved.
 Code licensed under the BSD License:
 http://yuilibrary.com/license/
 */
+var fs = require('fs');
 
 exports.check = function (options, blob, done) {
-    var bail = null;
+    var bail = null,
+        sourceFile;
 
     if (blob.result.length === 0) {
-        bail = 'writing zero length file from ' + blob.name;
+        if (blob.name) {
+            sourceFile = fs.readFileSync(blob.name, {
+                encoding: 'UTF-8'
+            });
+        }
+        if (!blob.name || sourceFile.length !== 0) {
+            bail = 'writing zero length file from ' + blob.name;
+        }
     }
 
     done(bail, new blob.constructor(blob.result, blob));