モジュール:Portal

--== This module is a Lua implementation of the old  template. As of August 2013 it is used on nearly 5,000,000 articles.
-- Please take care when updating it! It outputs two functions: p.portal, which generates a list of portals, and p.image, which
-- produces the image name for an individual portal.
-- The portal image data is kept in submodules of Module:Portal/images, listed below:
-- Module:Portal/images/a		- for portal names beginning with "A".
-- Module:Portal/images/b		- for portal names beginning with "B".
-- Module:Portal/images/c		- for portal names beginning with "C".
-- Module:Portal/images/d		- for portal names beginning with "D".
-- Module:Portal/images/e		- for portal names beginning with "E".
-- Module:Portal/images/f		- for portal names beginning with "F".
-- Module:Portal/images/g		- for portal names beginning with "G".
-- Module:Portal/images/h		- for portal names beginning with "H".
-- Module:Portal/images/i		- for portal names beginning with "I".
-- Module:Portal/images/j		- for portal names beginning with "J".
-- Module:Portal/images/k		- for portal names beginning with "K".
-- Module:Portal/images/l		- for portal names beginning with "L".
-- Module:Portal/images/m		- for portal names beginning with "M".
-- Module:Portal/images/n		- for portal names beginning with "N".
-- Module:Portal/images/o		- for portal names beginning with "O".
-- Module:Portal/images/p		- for portal names beginning with "P".
-- Module:Portal/images/q		- for portal names beginning with "Q".
-- Module:Portal/images/r		- for portal names beginning with "R".
-- Module:Portal/images/s		- for portal names beginning with "S".
-- Module:Portal/images/t		- for portal names beginning with "T".
-- Module:Portal/images/u		- for portal names beginning with "U".
-- Module:Portal/images/v		- for portal names beginning with "V".
-- Module:Portal/images/w		- for portal names beginning with "W".
-- Module:Portal/images/x		- for portal names beginning with "X".
-- Module:Portal/images/y		- for portal names beginning with "Y".
-- Module:Portal/images/z		- for portal names beginning with "Z".
-- Module:Portal/images/other	- for portal names beginning with any other letters. This includes numbers,
-- 									  letters with diacritics, and letters in non-Latin alphabets.
-- Module:Portal/images/aliases	- for adding aliases for existing portal names. Use this page for variations
-- 									  in spelling and diacritics, etc., no matter what letter the portal begins with.
--
-- The images data pages are separated by the first letter to reduce server load when images are added, changed, or removed.
-- Previously all the images were on one data page at Module:Portal/images, but this had the disadvantage that all
-- 5,000,000 pages using this module needed to be refreshed every time an image was added or removed.

**
local p = {}
local function matchImagePage(s)
	-- Finds the appropriate image subpage given a lower-case
	-- portal name plus the first letter of that portal name.
	if type(s) ~= 'string' or #s No portals specified: please specify at least one portal')
		return tostring(root)
	end
	-- Start the list. This corresponds to the start of the wikitext table in the old Template:Portal.
	local listroot = root:tag('ul')
		:css('display', 'table')
		:css('box-sizing', 'border-box')
		:css('padding', '0.1em')
		:css('max-width', '175px')
		:css('width', type(args.boxsize) == 'string' and (args.boxsize .. 'px') or nil)
		:css('background', '#f9f9f9')
		:css('font-size', '85%')
		:css('line-height', '110%')
		:css('font-style', 'italic')
		:css('font-weight', 'bold')
	-- Display the portals specified in the positional arguments.
	for _, portal in ipairs(portals) do
		local image = getImageName(portal)
		-- Generate the html for the image and the portal name.
		listroot
			:newline()
			:tag('li')
				:css('display', 'table-row')
				:tag('span')
					:css('display', 'table-cell')
					:css('padding', '0.2em')
					:css('vertical-align', 'middle')
					:css('text-align', 'center')
					:wikitext(string.format('class=noviewer', image))
					:done()
				:tag('span')
					:css('display', 'table-cell')
					:css('padding', '0.2em 0.2em 0.2em 0.3em')
					:css('vertical-align', 'middle')
					:wikitext(string.format('%s%sポータル', portal, portal, args'break' and  or ' '))
	end
	return tostring(root)
end
function p._image(portals)
	-- Wrapper function to allow getImageName() to be accessed through #invoke.
	return getImageName(portals1)
end
local function getAllImageTables()
	-- Returns an array containing all image subpages (minus aliases) as loaded by mw.loadData.
	local images = {}
	for i, subpage in ipairs{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'other'} do
		imagesi = mw.loadData('Module:Portal/images/' .. subpage)
	end
	return images
end
function p._displayAll(portals, args)
	-- This function displays all portals that have portal images. This function is for maintenance purposes and should not be used in
	-- articles, for two reasons: 1) there are over 1500 portals with portal images, and 2) the module doesn't record how the portal
	-- names are capitalized, so the portal links may be broken.
	local lang = mw.language.getContentLanguage()
	local count = 1
	for _, imageTable in ipairs(getAllImageTables()) do
		for portal in pairs(imageTable) do
			portalscount = lang:ucfirst(portal)
			count = count + 1
		end
	end
	return p._portal(portals, args)
end
function p._imageDupes()
	-- This function searches the image subpages to find duplicate images. If duplicate images exist, it is not necessarily a bad thing,
	-- as different portals might just happen to choose the same image. However, this function is helpful in identifying images that
	-- should be moved to a portal alias for ease of maintenance.
	local exists, dupes = {}, {}
	for _, imageTable in ipairs(getAllImageTables()) do
		for portal, image in pairs(imageTable) do
			if not existsimage then
				existsimage = portal
			else
				table.insert(dupes, string.format('The image "%s" is used for both portals "%s" and "%s".', image, image, existsimage, portal))
			end
		end
	end
	if #dupes < 1 then
		return 'No duplicate images found.'
	else
		return 'The following duplicate images were found:\n* ' .. table.concat(dupes, '\n* ')
	end
end
local function processPortalArgs(args)
	-- This function processes a table of arguments and returns two tables: an array of portal names for processing by ipairs, and a table of
	-- the named arguments that specify style options, etc. We need to use ipairs because we want to list all the portals in the order
	-- they were passed to the template, but we also want to be able to deal with positional arguments passed explicitly, for example
	-- 2=Politics. The behaviour of ipairs is undefined if nil values are present, so we need to make sure they are all removed.
	args = type(args) == 'table' and args or {}
	local portals = {}
	local namedArgs = {}
	for k, v in pairs(args) do
		if type(k) == 'number' and type(v) == 'string' then -- Make sure we have no non-string portal names.
			table.insert(portals, k)
		elseif type(k) ~= 'number' then
			namedArgsk = v
		end
	end
	table.sort(portals)
	for i, v in ipairs(portals) do
		portalsi = argsv
	end
	return portals, namedArgs
end
local function makeWrapper(funcName)
	-- Processes external arguments and sends them to the other functions.
	return function (frame)
		-- If called via #invoke, use the args passed into the invoking
		-- template, or the args passed to #invoke if any exist. Otherwise
		-- assume args are being passed directly in from the debug console
		-- or from another Lua module.
		local origArgs
		if type(frame.getParent) == 'function' then
			origArgs = frame:getParent().args
			for k, v in pairs(frame.args) do
				origArgs = frame.args
				break
			end
		else
			origArgs = frame
		end
		-- Trim whitespace and remove blank arguments.
		local args = {}
		for k, v in pairs(origArgs) do
			if type(v) == 'string' then
				v = mw.text.trim(v)
			end
			if v ~=  then
				argsk = v
			end
		end
		return pfuncName(processPortalArgs(args)) -- passes two tables to func: an array of portal names, and a table of named arguments.
	end
end
for _, funcName in ipairs{'portal', 'image', 'imageDupes', 'displayAll'} do
	pfuncName = makeWrapper('_' .. funcName)
end
return p