From cf0753e06283d10cfc56da3ed312c4f6fa10c3b7 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Thu, 18 Oct 2012 18:18:40 +0200
Subject: [PATCH] Initialize config if it does not exist yet

---
 src/Composer/Config/JsonConfigSource.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Config/JsonConfigSource.php b/src/Composer/Config/JsonConfigSource.php
index 8de10a51e..384e153c8 100644
--- a/src/Composer/Config/JsonConfigSource.php
+++ b/src/Composer/Config/JsonConfigSource.php
@@ -63,7 +63,11 @@ class JsonConfigSource implements ConfigSourceInterface
         array_shift($args);
         $fallback = array_pop($args);
 
-        $contents = file_get_contents($this->file->getPath());
+        if ($this->file->exists()) {
+            $contents = file_get_contents($this->file->getPath());
+        } else {
+            $contents = "{\n    \"config\": {\n    }\n}\n";
+        }
         $manipulator = new JsonManipulator($contents);
 
         // try to update cleanly