وحدة:TOC

-- This module implements various templates that create custom tables of
-- contents.

-- Load necessary modules
local yesno = require('Module:Yesno')
local checkType = require('libraryUtil').checkType

local p = {}

local function makeTocLink(page, display)
	display = display or page
	return string.format('[[#%s|%s]]', page, display)
end

local function makeToc(s, args)
	-- Make a TOC box from a string and from the given table of arguments.
	checkType('makeToc', 1, s, 'string')
	checkType('makeToc', 2, args, 'table', true)
	args = args or {}

	-- Root
	local root = mw.html.create()
	local isPrimary = yesno(args.primary) ~= false
	if isPrimary then
		root:wikitext('__NOTOC__')
	end

	-- Top div tag
	local top = root:tag('div')
	top:addClass('toc plainlinks hlist')
	if isPrimary then
		top
			:attr('id', 'toc')
			:attr('class', 'toc')
	end
	local align = args.align and args.align:lower()
	if align == 'left' then
		top
			:css('float', 'left')
			:css('clear', args.clear or 'left')
	elseif align == 'right' then
		top
			:css('float', 'right')
			:css('clear', args.clear or 'right')
	elseif align == 'center' then
		top
			:css('margin', 'auto')
			:css('clear', args.clear or 'none')
	else
		top
			:css('clear', args.clear or 'left')
	end
	top:newline()

	-- Title div tag
	local title = args.title or mw.message.new('Toc'):plain()
	local titleDiv = top:tag('div')
	titleDiv:attr('id', 'toctitle')
	titleDiv:attr('class', 'toctitle')
	if isPrimary then
		titleDiv:wikitext('<h2>' .. title .. '</h2>')
	else
		titleDiv:tag('strong'):wikitext(title)
	end
	
	-- Content
	top
		:newline()
		:wikitext(s)
		:newline()
	
	return tostring(root)
end

function p._years(args)
	local i = tonumber(args.startyear) or 1900
	local endYear = tonumber(args.endyear) or 1950
	local range = tonumber(args.range)
	local step = tonumber(args.step) or 1
	local links = {}
	while i <= endYear do
		local year = tostring(i)
		if range then
			year = year .. '-' .. tostring(i + range)
		end
		links[#links + 1] = makeTocLink(year)
		i = i + step
	end
	if #links > 0 then
		links = '* ' .. table.concat(links, ' ')
		return makeToc(links, args)
	else
		return ''
	end
end

function p._list(args)
	-- Set up the variables.
	local noRows = 4 -- The number of rows, starting at key "a". Must be 26 or less.
	local alphabetPosition = 3 -- The position of the extra alphabet row.
	local lists, chars = {}, {}
	for i = 1, noRows do
		lists[i] = {}
	end

	-- Find the relevant keys from the arguments.
	local a = 97
	local endChar = string.char(a + noRows - 1)
	local pattern = string.format('^([a-%s])([1-9][0-9]*)$', endChar)
	for k, v in pairs(args) do
		local letter, num
		if type(k) == 'string' then
			letter, num = k:match(pattern)
		end
		if letter then
			local iRow = string.byte(letter) - a + 1
			table.insert(lists[iRow], {num = tonumber(num), section = v})
		end
	end

	-- Sort the tables and replace the value tables with the section name.
	for i, valueTables in pairs(lists) do
		table.sort(valueTables, function(t1, t2)
			return t1.num < t2.num
		end)
		for j, valueTable in ipairs(valueTables) do
			lists[i][j] = valueTable.section
		end
	end

	-- Add the extra alphabet row.
	local A = 65
	local alphabetRow = {}
	for i = 1, 26 do
		local char = string.char(A + i - 1)
		alphabetRow[i] = char
	end
	table.insert(lists, alphabetPosition, alphabetRow)

	-- Render the rows.
	local ret = {}
	for i, sections in ipairs(lists) do
		if #sections > 0 then
			ret[#ret + 1] = '<div>'
			for j, section in ipairs(sections) do
				ret[#ret + 1] = '* ' .. makeTocLink(section)
			end
			ret[#ret + 1] = '</div>'
		end
	end

	return makeToc(table.concat(ret, '\n'), args)
end

setmetatable(p, {__index = function(t, k)
	return function (frame)
		local args = require('Module:Arguments').getArgs(frame, {
			wrappers = {
				'Template:TOCyears',
				'Template:List TOC'
			}
		})
		return p['_' .. k](args)
	end
end})

return p
وحدة:TOC

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