From 2b0e8c6d7fc72c5c4d090dd3311c341f280e2237 Mon Sep 17 00:00:00 2001
From: Steven Barth <steven@midlink.org>
Date: Thu, 14 Aug 2008 21:55:43 +0000
Subject: [PATCH] libs/core: Add luci.execi as memory efficient replacement for
 now deprecated luci.execl

---
 libs/core/luasrc/util.lua | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/libs/core/luasrc/util.lua b/libs/core/luasrc/util.lua
index 638bb056a..51d66e08e 100644
--- a/libs/core/luasrc/util.lua
+++ b/libs/core/luasrc/util.lua
@@ -594,9 +594,24 @@ function exec(command)
 	return data
 end
 
---- Execute given commandline and gather stdout.
+--- Return a line-buffered iterator over the output of given command.
 -- @param command	String containing the command to execute
--- @return			Table containing the command's stdout splitted up in lines
+-- @return			Iterator
+function execi(command)
+	local pp = io.popen(command)
+
+	return pp and function()
+		local line = pp:read()
+		
+		if not line then
+			pp:close()
+		end
+		
+		return line
+	end
+end
+
+-- Deprecated
 function execl(command)
 	local pp   = io.popen(command)
 	local line = ""
-- 
2.25.1