Add basic number localization

DEVELOPERS.md

@@ -49,6 +49,7 @@ Mods with documented APIs:
 * `rp_item_drop`: Add a function to simulate an item drop
 * `rp_itemshow`: Needed when your item needs a custom appearance in the item frame / item showcase
 * `rp_jewels`: Register jeweled tools, and more
+* `rp_loalize`: Localize numbers
 * `rp_locks`: Get info about lockable nodes
 * `rp_partialblocks`: Register partial blocks (slabs, stairs)
 * `rp_player`: Player model handling, model animation, textures

mods/rp_jewels/init.lua

@@ -183,7 +183,7 @@ local function get_stat(format_text, stats_key, parent, stats)
       disp_val = disp_val + parent.stats[stats_key]
    end
    if disp_val ~= 0 then
-      return S(format_text, plus_power(disp_val))
+      return S(format_text, loc.num(plus_power(disp_val)))
    end
    return nil
 end

mods/rp_jewels/mod.conf

@@ -1,3 +1,3 @@
 name = rp_jewels
-depends = rp_sounds, rp_default, rp_formspec, rp_crafting, rp_achievements, rp_item_drop
+depends = rp_sounds, rp_default, rp_formspec, rp_crafting, rp_achievements, rp_item_drop, rp_localize
 optional_depends = tt

mods/rp_localize/API.md

@@ -0,0 +1,13 @@
+# `rp_localize`
+
+Use this mod if you want to print a number respecting the current locale.
+
+## `loc.num(numbr)`
+
+Takes a number `numbr` and return a formatted string representing the number appropirately for the current locale.
+For positive integers, the output is the same as for `tostring`.
+
+For convenience, if `numbr` is a string, it will first be attempted to internally convert it to a number.
+If it succeeds, it is localized. If it fails, the string is returned unchanged.
+
+This function currently supports the decimal point, the minus sign and the infinity sign. NaNs will be shown as `tostring` would show them.

mods/rp_localize/init.lua

@@ -0,0 +1,43 @@
+local S = minetest.get_translator("rp_localize")
+local INFINITY = 1/0
+local NEG_INFINITY = -1/0
+
+loc = {}
+
+loc.num = function(numbr)
+	if type(numbr) == "string" then
+		numbr = tonumber(numbr)
+		if type(numbr) ~= "number" then
+			return numbr
+		end
+	end
+	if minetest.is_nan(numbr) then
+		return tostring(numbr)
+	end
+	if numbr == INFINITY then
+		return S("∞")
+	elseif numbr == NEG_INFINITY then
+		return S("−@1", S("∞"))
+	end
+	local negative
+	if numbr < 0 then
+		negative = true
+		numbr = math.abs(numbr)
+	end
+	local pre = math.floor(numbr)
+	local post = numbr % 1
+	local str
+	if post ~= 0 then
+		post = string.sub(post, 3)
+		if negative then
+			str = S("−@1.@2", pre, post)
+		else
+			str = S("@1.@2", pre, post)
+		end
+	elseif negative then
+		str = S("−@1", numbr)
+	else
+		str = tostring(numbr)
+	end
+	return str
+end

mods/rp_localize/locale/rp_locale.de.tr

@@ -0,0 +1,5 @@
+# textdomain:rp_localize
+∞=∞
+@1.@2=@1,@2
+−@1.@2=−@1,@2
+−@1=−@1

mods/rp_localize/locale/template.txt

@@ -0,0 +1,10 @@
+# textdomain:rp_localize
+; Symbol for infinity
+∞=
+; Translation of the decimal point. @1 and @2 are the number parts
+; in front and behind the decimal point.
+@1.@2=
+; Same as above, but with a minus sign in front
+−@1.@2=
+; Negative number
+−@1=

mods/rp_localize/mod.conf

@@ -0,0 +1,2 @@
+name = rp_localize
+description = Localization tools

mods/tt_base/init.lua

@@ -64,7 +64,7 @@ tt.register_snippet(function(itemstring)
 				full_punch_interval = 1
 			end
 			desc = newline(desc)
-			desc = desc .. S("Full punch interval: @1s", string.format("%.2f", full_punch_interval))
+			desc = desc .. S("Full punch interval: @1s", loc.num(string.format("%.2f", full_punch_interval)))
 		end
 	end
 	if desc == "" then
@@ -115,7 +115,7 @@ tt.register_snippet(function(itemstring)
 		desc = desc .. minetest.colorize(tt.COLOR_GOOD, S("No fall damage"))
 	elseif tmp < 0 then
 		desc = newline(desc)
-		desc = desc .. minetest.colorize(tt.COLOR_DEFAULT, S("Fall damage: @1%", tmp))
+		desc = desc .. minetest.colorize(tt.COLOR_DEFAULT, S("Fall damage: @1%", loc.num(tmp)))
 	end
 
 	-- Movement-related node facts

mods/tt_base/mod.conf

@@ -1,3 +1,3 @@
 name = tt_base
 description = Adds generic tooltip extensions to items
-depends = tt
+depends = tt, rp_localize