From: Jo-Philipp Wich <jow@openwrt.org>
Date: Sun, 17 Aug 2008 14:56:03 +0000 (+0000)
Subject: * luci/libs:	add keys() to luci.util
X-Git-Tag: 0.8.0~386
X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fluci.git;a=commitdiff_plain;h=c7ba7f99b04178e839f343b4f3e17cf3c18ea75a

* luci/libs:	add keys() to luci.util
---

diff --git a/libs/core/luasrc/util.lua b/libs/core/luasrc/util.lua
index ef1b8fe27..c6d9ec6ce 100644
--- a/libs/core/luasrc/util.lua
+++ b/libs/core/luasrc/util.lua
@@ -358,6 +358,19 @@ function update(t, updates)
 	end
 end
 
+--- Retrieve all keys of given associative table.
+-- @param t	Table to extract keys from
+-- @return	Sorted table containing the keys
+function keys(t)
+	local keys = { }
+	if t then
+		for k, _ in kspairs(t) do
+			table.insert( keys, k )
+		end
+	end
+	return keys
+end
+
 --- Clones the given object and return it's copy.
 -- @param object	Table value to clone
 -- @param deep		Boolean indicating whether to do recursive cloning