Module:Ordinal

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This documentation is transcluded from Module:Ordinal/doc. Changes can be proposed in the talk page.

Module:Ordinal is imported from Module:Ordinal on Wikipedia.

This module is imported from the English Wikipedia. Although the visual appearance might be different, the functionality is identical. Please refer to the Wikipedia page for detailed documentation.

This module is unused.

This module is neither invoked by a template nor required/loaded by another module. If this is in error, make sure to add {{Documentation}}/{{No documentation}} to the calling template's or parent's module documentation.

Module:Ordinal requires Module:Yesno.

ExpandFunction list
L 27 — p.ordinal L 38 — p._ordinal

Module:Ordinal is meant to implement the {{Ordinal}} template. Please see the template page for usage instructions.

---

--[[  
 
This template will add the appropriate ordinal suffix to a given integer.
 
Please do not modify this code without applying the changes first at
Module:Ordinal/sandbox and testing.
 
]]

local p = {}

local yesno     = require('Module:Yesno') -- boolean value interpretation

--[[
This function converts an integer value into a numeral followed by ordinal indicator.
The output string might contain HTML tags.
 
Usage:
{{#invoke:Ordinal|ordinal|1=|2=|sup=}}
{{#invoke:Ordinal|ordinal}} - uses the caller's parameters
 
Parameters
    1: Any number or string.
    2: Set to "d" if the module should display "d" instead of "nd" and "rd".
    sup: Set to yes/no to toggle superscript ordinal suffix.
]]
function p.ordinal(frame)
	local args = frame.args
    if args[1] == nil then
        args = frame:getParent().args
    end
    if args[1] == nil then
    	args[1] = "{{{1}}}"
    end
    return p._ordinal(args[1], (args[2] == 'd'), yesno(args.sup))
end

function p._ordinal(n, d, sup)
	local x = tonumber(string.match(n, "(%d*)%W*$"))
	local suffix = "th"
	-- If tonumber(n) worked:
	if x then
		local mod10 = math.abs(x) % 10
		local mod100 = math.abs(x) % 100
		if     mod10 == 1 and mod100 ~= 11 then
			suffix = "st"
		elseif mod10 == 2 and mod100 ~= 12 then
			if d then suffix = "d" else suffix = "nd" end
		elseif mod10 == 3 and mod100 ~= 13 then
			if d then suffix = "d" else suffix = "rd" end
		end
	end
	if sup then
		suffix = "<sup>" .. suffix .. "</sup>"
	end
	return n .. suffix
end

return p