From 64cb9fd01fcf01ce8149a14b9734ac703abc7c0c Mon Sep 17 00:00:00 2001
From: Alexey Melnichuk <mimir@newmail.ru>
Date: Tue, 20 Oct 2015 20:29:57 +0300
Subject: [PATCH] Add. cache `switchname`

---
 .../install/scripts/resources/functions/channel_utils.lua     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/resources/install/scripts/resources/functions/channel_utils.lua b/resources/install/scripts/resources/functions/channel_utils.lua
index 6fb859adc7..b4a1c55477 100644
--- a/resources/install/scripts/resources/functions/channel_utils.lua
+++ b/resources/install/scripts/resources/functions/channel_utils.lua
@@ -45,12 +45,16 @@ function channel_evalute(uuid, cmd)
 	return result
 end
 
+local _switchname
 local function switchname()
+	if _switchname then return _switchname end
+
 	local result = api:executeString("switchname")
 
 	if result:sub(1, 4) == '-ERR' then return nil, result end
 	if result == '_undef_' then return false end
 
+	_switchname = result
 	return result
 end