پودمان:Portal

توضیحات این پودمان می‌تواند در پودمان:Portal/توضیحات قرار گیرد.

--[==[ This module is a Lua implementation of the old {{Portal}} 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 table 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/آ]]       - for portal names beginning with "آ".
-- [[Module:Portal/images/ا]]       - for portal names beginning with "ا".
-- [[Module:Portal/images/ب]]       - for portal names beginning with "ب".
-- [[Module:Portal/images/پ]]       - for portal names beginning with "پ".
-- [[Module:Portal/images/ت]]       - for portal names beginning with "ت".
-- [[Module:Portal/images/ث]]       - for portal names beginning with "ث".
-- [[Module:Portal/images/ج]]       - for portal names beginning with "ج".
-- [[Module:Portal/images/چ]]       - for portal names beginning with "چ".
-- [[Module:Portal/images/ح]]       - for portal names beginning with "ح".
-- [[Module:Portal/images/خ]]       - for portal names beginning with "خ".
-- [[Module:Portal/images/د]]       - for portal names beginning with "د".
-- [[Module:Portal/images/ذ]]       - for portal names beginning with "ذ".
-- [[Module:Portal/images/ر]]       - for portal names beginning with "ر".
-- [[Module:Portal/images/ز]]       - for portal names beginning with "ز".
-- [[Module:Portal/images/ژ]]       - for portal names beginning with "ژ".
-- [[Module:Portal/images/س]]       - for portal names beginning with "س".
-- [[Module:Portal/images/ش]]       - for portal names beginning with "ش".
-- [[Module:Portal/images/ص]]       - for portal names beginning with "ص".
-- [[Module:Portal/images/ض]]       - for portal names beginning with "ض".
-- [[Module:Portal/images/ط]]       - for portal names beginning with "ط".
-- [[Module:Portal/images/ظ]]       - for portal names beginning with "ظ".
-- [[Module:Portal/images/ع]]       - for portal names beginning with "ع".
-- [[Module:Portal/images/غ]]       - for portal names beginning with "غ".
-- [[Module:Portal/images/ف]]       - for portal names beginning with "ف".
-- [[Module:Portal/images/ق]]       - for portal names beginning with "ق".
-- [[Module:Portal/images/ک]]       - for portal names beginning with "ک".
-- [[Module:Portal/images/گ]]       - for portal names beginning with "گ".
-- [[Module:Portal/images/ل]]       - for portal names beginning with "ل".
-- [[Module:Portal/images/م]]       - for portal names beginning with "م".
-- [[Module:Portal/images/ن]]       - for portal names beginning with "ن".
-- [[Module:Portal/images/و]]       - for portal names beginning with "و".
-- [[Module:Portal/images/ه]]       - for portal names beginning with "ه".
-- [[Module:Portal/images/ی]]       - for portal names beginning with "ی".
-- [[Module:Portal/images/دیگر]]	- for portal names beginning with any other letters. This includes numbers,
-- 									  letters with diacritics, and letters in non-Latin alphabets.
-- [[Module:Portal/images/مستعارها]]	- 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 < 1 then return end
	local firstLetter = mw.ustring.sub(s, 1, 1)
	local imagePage
	-- برای شناسایی صفحات فارسی رجکس خط زیر تغییر کرده‌است.
	if mw.ustring.find(firstLetter, '^[اآبپتثجچحخدذرزژسشصضطظعغفقکگلمنوهی]') and mw.title.makeTitle(828, 'Portal/images/' .. firstLetter).exists then
		imagePage = 'Module:Portal/images/' .. firstLetter
	else
		imagePage = 'Module:Portal/images/دیگر'
	end
	return mw.loadData(imagePage)[s]
end

local function getAlias(s)
	-- Gets an alias from the image alias data page.
	local aliasData = mw.loadData('Module:Portal/images/مستعارها')
	for portal, aliases in pairs(aliasData) do
		for _, alias in ipairs(aliases) do
			if alias == s then
				return portal
			end
		end
	end
end

local function getImageName(s)
	-- Gets the image name for a given string.
	if type(s) ~= 'string' or #s < 1 then
		return 'Portal-puzzle.svg'
	end
	s = mw.ustring.lower(s)
	return matchImagePage(s) or matchImagePage(getAlias(s)) or 'Portal-puzzle.svg'
end

function p._portal(portals, args)
	-- This function builds the portal box used by the {{portal}} template.
	local root = mw.html.create('div')
		:addClass('noprint portal')
		:addClass(args.right and 'tright' or 'tleft')
		:css('border', 'solid #a2a9b1 1px')
		:css('margin', args.margin or (args.right == 'yes' and '0.5em 0 0.5em 1en') or '0.5em 1em 0.5em 0')
		:newline()

	-- Start the table. This corresponds to the start of the wikitext table in the old [[Template:Portal]].
	local tableroot = root:tag('table')
		:css('background', '#f8f9fa')
		:css('font-size', '85%')
		:css('line-height', '110%')
		:css('max-width', '175px')
		:css('width', type(args.boxsize) == 'string' and (args.boxsize .. 'px') or nil)

	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		tableroot:wikitext('<strong class="error">هیچ درگاهی تعیین نشده‌است: لطفاً دست کم یک درگاه تعیین کنید</strong>[[رده:الگو:درگاه بدون پارامتر]]')
	end

	-- 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.
		tableroot
			:newline()
			:tag('tr')
				:css('vertical-align', 'middle')
				:tag('td')
					:css('text-align', 'center')
					:wikitext(string.format('[[File:%s|32x28px|alt=نشان درگاه|class=noviewer]]', image))
					:done()
				:tag('td')
					:css('padding', '0 0.2em')
					:css('vertical-align', 'middle')
					:css('font-style', 'italic')
					:css('font-weight', 'bold')
					:wikitext(string.format('[[درگاه:%s|درگاه %s%s]]', portal, portal, args['break'] and '<br />' or ' '))
	end
	return tostring(root)
end

function p._image(portals)

	-- Wrapper function to allow getImageName() to be accessed through #invoke.
	return getImageName(portals[1])
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
		images[i] = 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
			portals[count] = 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 exists[image] then
				exists[image] = portal
			else
				table.insert(dupes, string.format('تصویر «[[:File:%s|%s]]» برای دو درگاه «%s» و «%s» استفاده شده است.', image, image, exists[image], portal))
			end
		end
	end
	if #dupes < 1 then
		return 'تصاویر یکسان یافت نشد.'
	else
		return 'تصاویر یکسان روبرو یافت شد:\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
	-- {{portal|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
			namedArgs[k] = v
		end
	end
	table.sort(portals)
	for i, v in ipairs(portals) do
		portals[i] = args[v]
	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
				args[k] = v
			end
		end
		return p[funcName](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
	p[funcName] = makeWrapper('_' .. funcName)
end

return p