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Module:italics

This module applies proper italicization to the taxonomic name of a genus, species, subspecies, variety, or form; or italicizes a title while not italicizing a parenthetical disambiguator. It is intended to be used in interwiki link modules, but might be useful elsewhere too.

TestcasesEdit

{{#invoke:italics|test|<cite>A Voyage around the World. [...] In Two Volumes</cite>|quote=1}}
{{#invoke:italics|test|<cite>A Response to a Scurrilous Libel by J[onathan] S[wift]. [...] In Two Volumes</cite>|quote=1}}
{{#invoke:italics|test|<cite>[[w:Essays (Montaigne)|The Essayes, or, Morall, Politike and Millitarie Discourses of Lo. Michaell de Montaigne, Knight of the Noble Order of St. Michaell, and One of the Gentlemen in Ordinary of the French King, Henry the Third His Chamber]]</cite>|quote=1}}
{{#invoke:italics|test|<cite>[[w:Cyclopædia, or an Universal Dictionary of Arts and Sciences|Cyclopædia: Or, An Universal Dictionary of Arts and Sciences; [...] In Two Volumes]]</cite>|quote=1}}
{{#invoke:italics|test|1=[http://dsalsrv02.uchicago.edu/cgi-bin/philologic/search3advanced?dbname=mcgregor&query=R:hi:McGregor&searchdomain=headwords&matchtype=exact&display=utf8 {{lang|hi|R:hi:McGregor}}]|quote=1}}
{{#invoke:italics|test|Pinus contorta subsp. latifolia}}
{{#invoke:italics|test|Cupressus arizonica var. glabra}}
{{#invoke:italics|test|Fragaria vesca subsp. vesca f. semperflorens}}
{{#invoke:italics|test|Fragaria × ananassa}}
{{#invoke:italics|test|Argentina (plant)}}

{{taxlink|Rosa × alba|nothospecies}} - Rosa × alba


local export = {}
local find = mw.ustring.find
local match = mw.ustring.match
local gsub = mw.ustring.gsub

function export.i(text)
	if text == "" or text == nil then
		return nil
	end
	
	if type(text) == "table" and text.args then
		text = text.args[1]
	end
	
	-- Remove whitespace from beginning and end of text.
	text = mw.text.trim(text)
	
	-- Find parenthesized text.
	local parenthesis = ""
	if find(text, "%b()$") then
		text, parenthesis = match(text, "^(.*)(%b())$")
		if text == "" or text == nil then
			error("Malformed page name: " .. text)
		end
	end
	
	text = "''" .. text .. "''"
	
	--[[ Adds italics toggle ('') around the whitespace
		that surrounds various things that aren't supposed to be italicized:
		for instance, Fragaria × ananassa becomes ''Fragaria'' × ''ananassa''.
		(The hybridization symbol × isn't supposed to be italicized.) ]]
	local notItalicized = {
		["subsp."] = true, ["ssp."] = true, ["var."] = true, ["f."] = true,
		["sect."] = true, ["subsect."] = true, ["subg."] = true,
	}
	local hybrid = "×"
	
	text = text:gsub("(%s*([a-z]+%.)%s*)",
		function(wholeMatch, abbreviation)
			if notItalicized[abbreviation] then
				return "''" .. wholeMatch .. "''"
			end
		end)
	
	text = text:gsub("%s*" .. hybrid .. "%s*", "''%0''")
	
	return text .. parenthesis
end

function export.unitalicize_brackets(text)
	if type(text) == "table" and text.args then
		text = text.args[1]
	end
	
	if not text or text == "" then
		return nil
	end
	
	local function unitalicize(text)
		return '<span style="font-style: normal;">' .. text .. '</span>'
	end
	
	local function process(text)
		if text:find("[[", 1, true) then
			if text:find("|") then
				return text:gsub(
					"|.-%]%]",
					function (piping)
						return piping:gsub("%b[]", process)
					end)
			end
			-- do nothing with un-piped wikilinks
		--[=[
		elseif text:find("[http", 1, true) then
			return text:gsub(
				"%[([^ ]+ )([^%]]+)%]",
				function (URL, link_text)
					return "[" .. URL .. process(link_text) .. "]"
				end)
		--]=]
		elseif text:find("^%[https?://") then
				return text:gsub(
					" .+",
					function (link_text)
						return link_text:gsub("%b[]", process)
					end)
		else
			local inside_brackets = text:sub(2, -2)
			if inside_brackets == "..." or inside_brackets == "…" then
				return unitalicize(text)
			else
				return unitalicize("[") .. inside_brackets .. unitalicize("]")
			end
		end
	end
	
	text = text:gsub("%b[]", process)
	
	return text
end

function export.test(frame)
	local text = frame.args[1]
	local quote = require("Module:yesno")(frame.args.quote)
	if quote then
		return export.unitalicize_brackets(text)
	else
		return export.i(text)
	end
end

return export