Add i18n support using intllib

Makefile

@@ -0,0 +1,4 @@
+PROJECT = drawers
+
+updatepo:
+	./tools/updatepo.sh

depends.txt

@@ -2,3 +2,4 @@ default?
 mcl_core?
 screwdriver?
 pipeworks?
+intllib?

init.lua

@@ -24,6 +24,10 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ]]
 
+-- Load support for intllib.
+local MP = core.get_modpath(core.get_current_modname())
+local S, NS = dofile(MP.."/intllib.lua")
+
 drawers = {}
 drawers.drawer_visuals = {}
 
@@ -51,10 +55,9 @@ drawers.enable_2x2 = not core.setting_getbool("drawers_disable_2x2")
 -- Load files
 --
 
-local modpath = core.get_modpath("drawers")
-dofile(modpath .. "/lua/helpers.lua")
-dofile(modpath .. "/lua/visual.lua")
-dofile(modpath .. "/lua/api.lua")
+dofile(MP .. "/lua/helpers.lua")
+dofile(MP .. "/lua/visual.lua")
+dofile(MP .. "/lua/api.lua")
 
 
 --
@@ -62,7 +65,7 @@ dofile(modpath .. "/lua/api.lua")
 --
 
 drawers.register_drawer("drawers:wood", {
-	description = "Wooden",
+	description = S("Wooden"),
 	tiles1 = {"drawers_wood.png", "drawers_wood.png", "drawers_wood.png",
 		"drawers_wood.png", "drawers_wood.png", "drawers_wood_front_1.png"},
 	tiles2 = {"drawers_wood.png", "drawers_wood.png", "drawers_wood.png",

intllib.lua

@@ -0,0 +1,45 @@
+
+-- Fallback functions for when `intllib` is not installed.
+-- Code released under Unlicense <http://unlicense.org>.
+
+-- Get the latest version of this file at:
+--   https://raw.githubusercontent.com/minetest-mods/intllib/master/lib/intllib.lua
+
+local function format(str, ...)
+	local args = { ... }
+	local function repl(escape, open, num, close)
+		if escape == "" then
+			local replacement = tostring(args[tonumber(num)])
+			if open == "" then
+				replacement = replacement..close
+			end
+			return replacement
+		else
+			return "@"..open..num..close
+		end
+	end
+	return (str:gsub("(@?)@(%(?)(%d+)(%)?)", repl))
+end
+
+local gettext, ngettext
+if minetest.get_modpath("intllib") then
+	if intllib.make_gettext_pair then
+		-- New method using gettext.
+		gettext, ngettext = intllib.make_gettext_pair()
+	else
+		-- Old method using text files.
+		gettext = intllib.Getter()
+	end
+end
+
+-- Fill in missing functions.
+
+gettext = gettext or function(msgid, ...)
+	return format(msgid, ...)
+end
+
+ngettext = ngettext or function(msgid, msgid_plural, n, ...)
+	return format(n==1 and msgid or msgid_plural, ...)
+end
+
+return gettext, ngettext

locale/template.pot

@@ -0,0 +1,46 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2017-04-11 12:56+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: lua/helpers.lua
+msgid "@1 (@2% full)"
+msgstr ""
+
+#: lua/helpers.lua
+msgid "@1 @2 (@3% full)"
+msgstr ""
+
+#: lua/api.lua init.lua
+msgid "Wooden"
+msgstr ""
+
+#: lua/api.lua
+msgid "@1 Drawer"
+msgstr ""
+
+#: lua/api.lua
+msgid "@1 Drawers (1x2)"
+msgstr ""
+
+#: lua/api.lua
+msgid "@1 Drawers (2x2)"
+msgstr ""
+
+#: lua/visual.lua
+msgid "Empty"
+msgstr ""

lua/api.lua

@@ -25,6 +25,10 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ]]
 
+-- Load support for intllib.
+local MP = core.get_modpath(core.get_current_modname())
+local S, NS = dofile(MP.."/intllib.lua")
+
 drawers.node_box_simple = {
 	{-0.5, -0.5, -0.4375, 0.5, 0.5, 0.5},
 	{-0.5, -0.5, -0.5, -0.4375, 0.5, -0.4375},
@@ -125,7 +129,7 @@ function drawers.drawer_insert_object(pos, node, stack, direction)
 end
 
 function drawers.register_drawer(name, def)
-	def.description = def.description or "Wooden"
+	def.description = def.description or S("Wooden")
 	def.drawtype = "nodebox"
 	def.node_box = {type = "fixed", fixed = drawers.node_box_simple}
 	def.collision_box = {type = "regular"}
@@ -160,7 +164,7 @@ function drawers.register_drawer(name, def)
 	if drawers.enable_1x1 then
 		-- normal drawer 1x1 = 1
 		local def1 = table.copy(def)
-		def1.description = def.description .. " Drawer"
+		def1.description = S("@1 Drawer", def.description)
 		def1.tiles = def.tiles or def.tiles1
 		def1.tiles1 = nil
 		def1.tiles2 = nil
@@ -173,7 +177,7 @@ function drawers.register_drawer(name, def)
 	if drawers.enable_1x2 then
 		-- 1x2 = 2
 		local def2 = table.copy(def)
-		def2.description = def.description .. " Drawers (1x2)"
+		def2.description = S("@1 Drawers (1x2)", def.description)
 		def2.tiles = def.tiles2
 		def2.tiles1 = nil
 		def2.tiles2 = nil
@@ -185,7 +189,7 @@ function drawers.register_drawer(name, def)
 	if drawers.enable_2x2 then
 		-- 2x2 = 4
 		local def4 = table.copy(def)
-		def4.description = def.description .. " Drawers (2x2)"
+		def4.description = S("@1 Drawers (2x2)", def.description)
 		def4.tiles = def.tiles4
 		def4.tiles1 = nil
 		def4.tiles2 = nil

lua/helpers.lua

@@ -25,6 +25,10 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ]]
 
+-- Load support for intllib.
+local MP = core.get_modpath(core.get_current_modname())
+local S, NS = dofile(MP.."/intllib.lua")
+
 function drawers.gen_info_text(basename, count, factor, stack_max)
 	local maxCount = stack_max * factor
 	local percent = count / maxCount * 100
@@ -32,10 +36,9 @@ function drawers.gen_info_text(basename, count, factor, stack_max)
 	percent = math.floor(percent + 0.5)
 
 	if count == 0 then
-		return basename .. " (" .. tostring(percent) .. "% full)"
+		return S("@1 (@2% full)", basename, tostring(percent))
 	else
-		return tostring(count) .. " " .. basename .. " (" ..
-			tostring(percent) .. "% full)"
+		return S("@1 @2 (@3% full)", tostring(count), basename, tostring(percent))
 	end
 end
 

lua/visual.lua

@@ -24,6 +24,10 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ]]
 
+-- Load support for intllib.
+local MP = core.get_modpath(core.get_current_modname())
+local S, NS = dofile(MP.."/intllib.lua")
+
 core.register_entity("drawers:visual", {
 	initial_properties = {
 		hp_max = 1,
@@ -179,7 +183,7 @@ core.register_entity("drawers:visual", {
 			self.itemName = ""
 			meta:set_string("name"..self.visualId, self.itemName)
 			self.texture = "blank.png"
-			itemDescription = "Empty"
+			itemDescription = S("Empty")
 		end
 
 		local infotext = drawers.gen_info_text(itemDescription,
@@ -243,7 +247,7 @@ core.register_entity("drawers:visual", {
 		if core.registered_items[self.itemName] then
 			itemDescription = core.registered_items[self.itemName].description
 		else
-			itemDescription = "Empty"
+			itemDescription = S("Empty")
 		end
 		local infotext = drawers.gen_info_text(itemDescription,
 			self.count, self.stackMaxFactor, self.itemStackMax)

tools/updatepo.sh

@@ -0,0 +1,22 @@
+#! /bin/bash
+
+# To create a new translation:
+#   msginit --locale=ll_CC -o locale/ll_CC.po -i locale/template.pot
+
+cd "$(dirname "${BASH_SOURCE[0]}")/..";
+
+# Extract translatable strings.
+xgettext --from-code=UTF-8 \
+		--keyword=S \
+		--keyword=NS:1,2 \
+		--keyword=N_ \
+		--add-comments='Translators:' \
+		--add-location=file \
+		-o locale/template.pot \
+		$(find . -name '*.lua')
+
+# Update translations.
+find locale -name '*.po' | while read -r file; do
+	echo $file
+	msgmerge --update $file locale/template.pot;
+done