From a386263d84982e0e3ef135e62b3a7e89dc0ad4e5 Mon Sep 17 00:00:00 2001
From: Daniele Alessandri <suppakilla@gmail.com>
Date: Tue, 3 May 2011 17:37:39 +0200
Subject: [PATCH] Add an helper method to get the actual keys from the whole
 argument list.

---
 lib/Predis/Commands/ScriptedCommand.php | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/Predis/Commands/ScriptedCommand.php b/lib/Predis/Commands/ScriptedCommand.php
index bb366e18..69c9ca0c 100644
--- a/lib/Predis/Commands/ScriptedCommand.php
+++ b/lib/Predis/Commands/ScriptedCommand.php
@@ -13,4 +13,12 @@ abstract class ScriptedCommand extends ServerEval {
         }
         return array_merge(array($this->getScript(), $keys), $arguments);
     }
+
+    protected function getKeys() {
+        $arguments = $this->getArguments();
+        if (($keys = $this->keysCount()) === -1) {
+            return array_slice($arguments, 2);
+        }
+        return array_slice($arguments, 2, $keys);
+    }
 }