Module:Editions

This module has no documentation. If you know how to use this module, please create it.

local p = {}

local data = mw.loadData("Module:Editions/data")

function p.main(frame)
	local args = frame:getParent().args
	return p._main(args)
end

function p._main(args)
	local short = (args.short or "") ~= ""
	local no_link = (args.nl or "") ~= ""
	local no_italics = (args.noitalics or "") ~= ""

	local linked_text = no_link and function(_, text)
		return text
	end or function(link_name, text)
		if link_name == text then
			return ("[[%s]]"):format(text)
		end
		return ("[[%s|%s]]"):format(link_name, text)
	end

	local remove_italics = no_italics and function(text)
		return text:gsub("'", "")
	end or function(text) return text end

	local editions = {}
	for i, arg in ipairs(args) do
		arg = mw.text.trim(arg or "")
		if arg ~= "" then
			local edition_name = data.alias_map[arg:lower()]
			if edition_name then
				editions[i] = data.editions[edition_name]
			else
				-- Unknown edition rendered as "[[<args[i]> Edition]]"
				editions[i] = {
					short = arg,
					no_suffix = arg,
					full = arg .. " Edition",
					link_name = arg .. " Edition",
					has_edition_suffix = true,
				}
			end
		end
	end

	local result = {}
	for i, edition in ipairs(editions) do
		if short then
			if i ~= 1 then
				table.insert(result, (i == #editions) and " & " or ", ")
			end
			table.insert(result, linked_text(edition.link_name, remove_italics(edition.short)))
		else
			local prev_was_edition = i > 1 and editions[i-1].has_edition_suffix
			local prev2_was_edition = i > 2 and editions[i-2].has_edition_suffix
			local next_is_edition = i ~= #editions and editions[i+1].has_edition_suffix

			if not next_is_edition and prev_was_edition and edition.has_edition_suffix then
				-- Insert an oxford comma if this is a list of more-than-2 editions
				table.insert(result, prev2_was_edition and ", and " or " and ")
			elseif i > 1 then
				if i == #editions then
					table.insert(result, i > 2 and ", and " or " and ")
				else
					table.insert(result, ", ")
				end
			end

			if edition.has_edition_suffix and (prev_was_edition or next_is_edition) then
				table.insert(result, linked_text(edition.link_name, remove_italics(edition.no_suffix)))
				if not next_is_edition then
					table.insert(result, " editions")
				end
			else
				table.insert(result, linked_text(edition.link_name, remove_italics(edition.full)))
			end
		end
	end

	return table.concat(result, "")
end

return p