From f03106343fdacd4caedfa4315a8cd75ab27a84ac Mon Sep 17 00:00:00 2001
From: Mika Havela <mika.havela@gmail.com>
Date: Tue, 29 Jan 2008 16:21:52 +0000
Subject: Added functionallity to modify options in a file

git-svn-id: svn://svn.alpinelinux.org/acf/core/trunk@661 ab2d0c66-481e-0410-8bed-d214d4d58bed
---
 lib/getopts.lua | 37 +++++++++++++++++++++++++++++++++----
 1 file changed, 33 insertions(+), 4 deletions(-)

(limited to 'lib')

diff --git a/lib/getopts.lua b/lib/getopts.lua
index d5ac795..9940f53 100644
--- a/lib/getopts.lua
+++ b/lib/getopts.lua
@@ -1,11 +1,40 @@
 module (..., package.seeall)
 require("fs")
 
---local conf_file
-
 function setoptsinfile (file, search, option, value)
-	local opts = getoptsfromfile(file)
-	return opts
+	local opts = {}
+	local newfilecontent = nil
+	local filecontent = nil
+	opts = getoptsfromfile(file) or {}
+	filecontent = fs.read_file(file) or ""
+	if (filecontent == "") or (opts[search] == "") or (opts[search] == nil) then
+		opts[search] = {}
+	end
+	if not (search) or not (option) then 
+		return nil, "Invalid usage of function getopts.setoptsinfile()"
+	end
+
+	--Change to new value
+	opts[search][option] = value
+
+	local optstr = ""
+	for k,v in pairs(opts) do
+		if (k == search) then
+			optstr = optstr.. k .. "=\""
+			for kk,vv in pairs(v) do
+				optstr = optstr .. kk .. " " .. vv .. " "
+			end
+			optstr = string.match(optstr, "(.-)%s*$") .. "\""
+		end
+	end
+
+	newfilecontent = string.gsub(filecontent, "%s*[;#]?" .. search .. "%s*=.-\n?$", "\n" .. optstr .. "\n") or ""
+	if (string.find(newfilecontent, search .. "%s*=" ) == nil) or (newfilecontent == "") then
+		fs.write_file(file,string.match(filecontent, "(.-)\n*$") .. "\n" .. optstr .. "\n")
+	else
+		fs.write_file(file,string.match(newfilecontent, "(.-)\n*$"))
+	end
+	return "File '" .. file .. "'has been modifyed!"
 end
 
 function getoptsfromfile (file, search, filter)
-- 
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