add logging support to signslib and re-add intllib support

locale/es.txt

@@ -176,3 +176,5 @@ Small CRT Television = Pequeña Televisión CRT
 E: character map file not found = E: archivo de mapa de caracteres no encontrado
 ## 1: Full String, 2: pos in string, 3: current char at pos
 W: unknown symbol in '%s' at %d (probably %s) = A: símbolo desconocido en '%s' posición %d (probablemente %s)
+%s wrote "%s" to sign at %s = %s ha escrito "%s" en el letrero en %s
+signs loaded = letreros cargados

locale/fr.txt

@@ -176,3 +176,5 @@ Small CRT Television = Petite télévision à tube cathodique
 E: character map file not found = E: fichier de table de caractère non trouvé
 ## 1: Full String, 2: pos in string, 3: current char at pos
 W: unknown symbol in '%s' at %d (probably %s) = A: symbole inconnu dans '%s' dans %d (probablement %s)
+%s wrote "%s" to sign at %s =
+signs loaded =

locale/template.txt

@@ -180,3 +180,5 @@ Small CRT Television =
 E: character map file not found =
 ## 1: Full String, 2: pos in string, 3: current char at pos
 W: unknown symbol in '%s' at %d (probably %s) =
+%s wrote "%s" to sign at %s =
+signs loaded =

signs_lib.lua

@@ -1,11 +1,20 @@
 -- Font: 04.jp.org
 
+-- Boilerplate to support localized strings if intllib mod is installed.
+local S
+if (minetest.get_modpath("intllib")) then
+    dofile(minetest.get_modpath("intllib").."/intllib.lua")
+    S = intllib.Getter(minetest.get_current_modname())
+else
+    S = function ( s ) return s end
+end
+
 -- load characters map
 local chars_file = io.open(minetest.get_modpath("homedecor").."/characters", "r")
 local charmap = {}
 local max_chars = 16
 if not chars_file then
-    print("[signs] E: character map file not found")
+    print("[signs] "..S("E: character map file not found"))
 else
     while true do
         local char = chars_file:read("*l")
@@ -173,6 +182,13 @@ minetest.register_node(":default:sign_wall", {
         homedecor_destruct_sign(pos)
     end,
     on_receive_fields = function(pos, formname, fields, sender)
+        if fields then
+            print(S("%s wrote \"%s\" to sign at %s"):format(
+                (sender:get_player_name() or ""),
+                fields.text,
+                minetest.pos_to_string(pos)
+            ))
+        end
         homedecor_update_sign(pos, fields)
     end,
     on_punch = function(pos, node, puncher)
@@ -201,6 +217,13 @@ minetest.register_node(":signs:sign_yard", {
         homedecor_destruct_sign(pos)
     end,
     on_receive_fields = function(pos, formname, fields, sender)
+        if fields then
+            print(S("%s wrote \"%s\" to sign at %s"):format(
+                (sender:get_player_name() or ""),
+                fields.text,
+                minetest.pos_to_string(pos)
+            ))
+        end
         homedecor_update_sign(pos, fields)
     end,
 	on_punch = function(pos, node, puncher)
@@ -402,6 +425,13 @@ function homedecor_register_fence_with_sign(fencename, fencewithsignname)
 		homedecor_destruct_sign(pos)
 	end
 	def_sign.on_receive_fields = function(pos, formname, fields, sender, ...)
+        if fields then
+            print(S("%s wrote \"%s\" to sign at %s"):format(
+                (sender:get_player_name() or ""),
+                fields.text,
+                minetest.pos_to_string(pos)
+            ))
+        end
 		homedecor_update_sign(pos, fields)
 	end
 	def_sign.on_punch = function(pos, node, puncher, ...)
@@ -419,5 +449,5 @@ function homedecor_register_fence_with_sign(fencename, fencewithsignname)
 end
 
 if minetest.setting_get("log_mods") then
-	minetest.log("action", "signs loaded")
+	minetest.log("action", S("signs loaded"))
 end