Some refactoring.

lib.lua

@@ -0,0 +1,44 @@
+
+local escapes = {
+	["\\"] = "\\",
+	["n"]  = "\n",
+	["="]  = "=",
+}
+
+local function unescape(s)
+	return s:gsub("([\\]?)\\(.)", function(slash, what)
+		if slash and (slash ~= "") then
+			return "\\"..what
+		else
+			return escapes[what] or what
+		end
+	end)
+end
+
+local function find_eq(s)
+	for slashes, pos in s:gmatch("([\\]*)=()") do
+		if (slashes:len() % 2) == 0 then
+			return pos - 1
+		end
+	end
+end
+
+function load_strings(filename)
+	local file, err = io.open(filename, "r")
+	if not file then
+		return nil
+	end
+	local strings = {}
+	for line in file:lines() do
+		line = line:trim()
+		if line ~= "" and line:sub(1, 1) ~= "#" then
+			local pos = find_eq(line)
+			if pos then
+				local msgid = unescape(line:sub(1, pos - 1):trim())
+				strings[msgid] = unescape(line:sub(pos + 1):trim())
+			end
+		end
+	end
+	file:close()
+	return strings
+end