Module:Util

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---

-- util
local m_text = require('Module:Text')
local p = {}

function p.nowrap(text)
	return '<span style="white-space:nowrap;">' .. text .. '</span>'
end

function p.escape(link)
	link = link or ''
	-- because of gsub not letting you have - unescaped
	link = string.gsub(link,'%-','%%%-')
	link = string.gsub(link,'%(','%%%(')
	link = string.gsub(link,'%)','%%%)')
	return link
end

function p.dplEscape(link)
	link = link or ''
	link = string.gsub(link,'%(','\\%(')
	link = string.gsub(link,'%)','\\%)')
	return link
end

function p.titleTable(title)
	local title = title or mw.title.getCurrentTitle().text
	return m_text.split(title,'/')
end

function p.concatSubpage(base, extension)
	-- concatenate the two but don't add a / if the 2nd argument is empty or Overview
	if extension == 'Overview' or extension == '' or not extension then
		return base
	elseif base == '' or not base then
		return extension
	else
		return base .. '/' .. extension
	end
end

function p.concatSubpageSystem(base, extension)
	local systems = mw.loadData('Module:Systems')
	return p.concatSubpage(base, systems[extension])
end

function p.concatSystemSubpage(base, extension)
	local systems = mw.loadData('Module:Systems')
	return p.concatSubpage(systems[base], extension)
end

function p.concatSubpages(tbl, extension)
	for k, v in pairs(tbl) do
		tbl[k] = p.concatSubpage(v, extension)
	end
	return
end

function p.serializeNumber(N)
	local chr = tostring(N):sub(-1)
	local lookup = { ['1'] = 'st', ['2'] = 'nd', ['3'] = 'rd' }
	return chr .. (lookup[chr] or 'th')
end

return p