intllib/intllib.lua

99 lines
2.2 KiB
Lua

intllib = { };
local strings = { };
local INTLLIB_DEBUG = true;
local LANG = minetest.setting_get("language") or os.getenv("LANG") or "en";
LANG = LANG:sub(1, 2);
local TRACE;
if (INTLLIB_DEBUG) then
TRACE = function ( s )
print("*** DEBUG: "..s);
end
else
TRACE = function ( ) end
end
local repr2esc = {
["n"] = "\n";
["r"] = "";
["t"] = "\t";
["\\"] = "\\";
["\""] = "\"";
};
local esc2repr = {
["\n"] = "\\n";
["\r"] = "";
["\t"] = "\\t";
["\\"] = "\\\\";
["\\\""] = "\"";
};
local function parse ( s )
return s:gsub("\\([nrt\"\'\\\\])", function ( c )
return (repr2esc[c] or c);
end);
end
local function repr ( s )
return s:gsub("[\n\t\"\'\\\\]", function ( c )
return (esc2repr[c] or c);
end);
end
local function do_load_strings ( f )
local msgstr = { };
for line in f:lines() do
line = line:trim();
if ((line ~= "") and (line:sub(1, 1) ~= "#")) then
local pos = line:find("=", 1, true);
while (pos and (line:sub(pos - 1, pos - 1) == "\\")) do
local pos = line:find("=", pos + 1, true);
end
if (pos) then
local msgid = line:sub(1, pos - 1):trim();
local str = line:sub(pos + 1):trim();
msgstr[msgid] = parse(str);
end
end
end
return msgstr;
end
function load_strings ( modname, lang )
lang = lang or LANG;
local f, e = io.open(minetest.get_modpath(modname).."/locale/"..lang..".txt");
if (not f) then
f, e = io.open(minetest.get_modpath("intllib").."/locale/"..modname.."/"..lang..".txt");
if (not f) then
return nil;
end
end
local strings;
strings = do_load_strings(f);
f:close();
return strings;
end
local getters = { };
function intllib.Getter ( modname )
if (not modname) then modname = minetest.get_current_modname(); end
if (not getters[modname]) then
local msgstr = load_strings(modname, lang) or { };
getters[modname] = function ( s )
return msgstr[repr(s)] or s;
end;
end
return getters[modname];
end
function intllib.get_current_language ( )
return LANG;
end