Create config.lua

src/apis/config.lua

@@ -0,0 +1,141 @@
+--Config API from LMNetOS
+
+function read(cfgfile, cfg)
+	local rtn
+	local ok, err = pcall(function()
+		local path
+		if not cfgfile then
+			path = "/.lmnet/sys.conf"
+		else
+			path = cfgfile
+		end
+		local file = fs.open(path, "r")
+		if not file then
+			return nil
+		end
+		local lines = {}
+		local line = ""
+		while line ~= nil do
+			line = file.readLine()
+			if line then
+				table.insert(lines, line)
+			end
+		end
+		file.close()
+		local config = {}
+		for _, v in pairs(lines) do
+			local tmp
+			local tmp2 = ""
+			for match in string.gmatch(v, "[^\=]+") do
+				if tmp then
+					tmp2 = tmp2..match
+				else
+					tmp = match
+				end
+			end
+			config[tmp] = textutils.unserialize(tostring(tmp2))
+		end
+		for i, v in pairs(config) do
+			if i == cfg then
+				rtn = v
+				return
+			end
+		end
+	end)
+	if not ok then
+		return false, err
+	end
+	return rtn
+end
+function write(cfgfile, cfg, value)
+	local rtn = false
+	local ok, err = pcall(function()
+		local path
+		if not cfgfile then
+			path = "/.lmnet/sys.conf"
+		else
+			path = cfgfile
+		end
+		if fs.exists(path) and fs.isDir(path) then
+			error(path.." is a directory", 0)
+		end
+		local readfile = fs.open(path, "r")
+		local readlines = {}
+		if readfile then
+			local readline = ""
+			while readline ~= nil do
+				readline = readfile.readLine()
+				if readline then
+					table.insert(readlines, readline)
+				end
+			end
+			readfile.close()
+		end
+		local config = {}
+		if fs.exists(path) and not fs.isDir(path) then
+			for _, v in pairs(readlines) do
+				local tmp
+				local tmp2 = ""
+				for match in string.gmatch(v, "[^\=]+") do
+					if tmp then
+						tmp2 = tmp2..match
+					else
+						tmp = match
+					end
+				end
+				config[tmp] = textutils.unserialize(tostring(tmp2))
+			end
+		end
+		local writefile = fs.open(path, "w")
+		config[cfg] = value
+		table.sort(config)
+		for i, v in pairs(config) do
+			writefile.writeLine(i.."="..textutils.serialize(v))
+		end
+		writefile.close()
+		rtn = true
+	end)
+	return rtn
+end
+function list(cfgfile)
+	local rtn
+	local ok, err = pcall(function()
+		local path
+		if not cfgfile then
+			path = "/.lmnet/sys.conf"
+		else
+			path = cfgfile
+		end
+		local file = fs.open(path, "r")
+		if not file then
+			return nil
+		end
+		local lines = {}
+		local line = ""
+		while line ~= nil do
+			line = file.readLine()
+			if line then
+				table.insert(lines, line)
+			end
+		end
+		file.close()
+		local config = {}
+		for _, v in pairs(lines) do
+			local tmp
+			local tmp2 = ""
+			for match in string.gmatch(v, "[^\=]+") do
+				if tmp then
+					tmp2 = tmp2..match
+				else
+					tmp = match
+				end
+			end
+			config[tmp] = textutils.unserialize(tostring(tmp2))
+		end
+		rtn = config
+	end)
+	if not ok then
+		return false, err
+	end
+	return rtn
+end