merged branch lenar/patch-1 (PR #1526)

Commits
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511a9a1 Edited src/Symfony/Component/Console/Helper/DialogHelper.php via GitHub

Discussion
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EOF triggers infinite loop in console dialog helper

* fix by throwing an exception when fgets() fails
* Also fixes "0" returning a default answer instead of "0"

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by lenar at 2011/07/05 00:26:02 -0700

Fixes #1521.

src/Symfony/Component/Console/Helper/DialogHelper.php

@@ -35,9 +35,12 @@ class DialogHelper extends Helper
     {
         $output->write($question);
 
-        $ret = trim(fgets(null === $this->inputStream ? STDIN : $this->inputStream));
+        if (false === $ret = fgets(null === $this->inputStream ? STDIN : $this->inputStream)) {
+            throw new \Exception('Aborted');
+        }
+        $ret = trim($ret);
 
-        return $ret ? $ret : $default;
+        return strlen($ret) > 0 ? $ret : $default;
     }
 
     /**