--- /dev/null
+<?php
+
+namespace Drush\Preflight;
+
+class PreflightLog
+{
+
+ protected $debug;
+
+ /**
+ * @return bool
+ */
+ public function getDebug()
+ {
+ return $this->debug;
+ }
+
+ /**
+ * @param bool $debug
+ */
+ public function setDebug($debug)
+ {
+ $this->debug = $debug;
+ return $this;
+ }
+
+ public function log($message)
+ {
+ if ($this->getDebug()) {
+ fwrite(STDERR, ' [preflight] ' . $message . "\n");
+ }
+ }
+}