--[[

This module provides the core functionality to a set of templates used to

display a list of taxon name/authority pairs, with the taxon names optionally

italicized, wikilinked and/or emboldened. Such lists are usually part of

taxoboxes.

]]



-- use a function from Module:TaxonItalics to italicize a taxon name

local TaxonItalics = require("Module:TaxonItalics")



local p = {}



--[[=========================================================================

Utility function to strip off any initial † present to mark the taxon as

extinct. The † must not be italicized, emboldened, or included in the

wikilinked text, so needs to be added back afterwards.

† is assumed to be present as one of:

* the unicode character †

* the HTML entity †

* the output of {{extinct}} – this will have been expanded before reaching this

  module and is assumed to have the form '<span ... </span>'

The function returns two values: the taxon name with any † before it removed

and either '†' if it was present or the empty string if not.

=============================================================================]]

function p.stripDagger(taxonName)

	local dagger = ''

	if mw.ustring.sub(taxonName,1,1) == '†' then

		taxonName = mw.ustring.sub(taxonName,2,#taxonName)

		dagger = '†'

	else 

		if string.sub(taxonName,1,8) == '&dagger;' then

			taxonName = string.sub(taxonName,9,#taxonName)

			dagger = '†'

		else

			-- did the taxon name originally have {{extinct}} before it?

			if (string.sub(taxonName,1,5) == '<abbr') and mw.ustring.find(taxonName, '†') then

				taxonName = string.gsub(taxonName, '^.*</abbr>', '', 1)

				dagger = '†'

			end

		end

	end

	return taxonName, dagger

end



--[[=========================================================================

The function returns a list of taxon names and authorities, appropriately

formatted.

Usage:

{{#invoke:TaxonList|main

|italic = yes - to italicize the taxon name

|linked = yes - to wikilink the taxon name

|bold = yes - to emboldent the taxon name

|incomplete = yes - to output "(incomplete)" at the end of the list

}}

The template that transcludes the invoking template must supply an indefinite

even number of arguments in the format

|Name1|Author1 |Name2|Author2| ... |NameN|AuthorN

=============================================================================]]

function p.main(frame)

	local italic = frame.args'italic' == 'yes'

	local bold = frame.args'bold' == 'yes'

	local linked = frame.args'linked' == 'yes'

	if bold then linked = false end -- must not have bold and wikilinked

	local abbreviated = frame.args'abbreviated' == 'yes'

	local incomplete = frame.args'incomplete' == 'yes'

	local taxonArgs = frame:getParent().args

	local result = ''

	-- iterate over unnamed variables

	local taxonName

	local dagger

	local first = true -- is this the first of a taxon name/author pair?

	for param, value in pairs(taxonArgs) do

		if tonumber(param) then

			if first then

				taxonName = mw.text.trim(value)

				-- if necessary separate any initial † from the taxon name

				if linked or italic or bold then

					taxonName, dagger = p.stripDagger(taxonName)

				else

					dagger = ''

				end

				if linked and not italic then

					taxonName = '[[' .. taxonName .. ']]'

				end

				if italic then

					taxonName = TaxonItalics.italicizeTaxonName(taxonName, linked, abbreviated)

				end

				if bold then

					taxonName = '<b>' .. taxonName .. '</b>'

				end

				result = result .. '<li>' .. dagger .. taxonName

			else

				result = result .. ' <small>' .. value .. '</small></li>'

			end

			first = not first

		end

	end

	if incomplete then

		result = result .. '<small>(incomplete list)</small>'

	end

	return '<ul class="taxonlist">' .. result .. '</ul>'

end



return p