Mô đun:Chessboard

local p = {}local function image_square( pc, row, col, size )	local colornames = { l = 'white', d = 'black', u = 'unknown color' }	local piecenames = { 		p = 'pawn',		r = 'rook',		n = 'knight',		b = 'bishop',		q = 'queen',		k = 'king',		a = 'archbishop',		c = 'chancelor',		z = 'champion',		w = 'wizard',		t = 'fool',		M = 'mann',		h = 'upside-down pawn',		m = 'upside-down rook',		B = 'upside-down bishop',		N = 'upside-down knight',		f = 'upside-down king',		g = 'upside-down queen',		e = 'elephant',		s = 'boat',		G = 'giraffe',		U = 'unicorn',		Z = 'zebra'	}	local symnames = {		xx = 'black cross',		ox = 'white cross',		xo = 'black circle',		oo = 'white circle',		ul = 'up-left arrow',		ua = 'up arrow',		ur = 'up-right arrow',		la = 'left arrow',		ra = 'right arrow',		dl = 'down-left arrow',		da = 'down arrow',		dr = 'down-right arrow',		lr = 'left-right arrow',		ud = 'up-down arrow',		db = 'up-right and down-left arrow',		dw = 'up-left and down-right arrow',		x0 = 'zero',		x1 = 'one',		x2 = 'two',		x3 = 'three',		x4 = 'four',		x5 = 'five',		x6 = 'six',		x7 = 'seven',		x8 = 'eight',		x9 = 'nine'	}	local colchar = {'a','b','c','d','e','f','g','h'}	local color = mw.ustring.gsub( pc, '^.*(%w)(%w).*$', '%2' ) or ''	local piece = mw.ustring.gsub( pc, '^.*(%w)(%w).*$', '%1' ) or ''	local alt = colchar[col] .. row .. ' '		if colornames[color] and piecenames[piece] then		alt = alt .. colornames[color] .. ' ' .. piecenames[piece]	else		alt = alt .. ( symnames[piece .. color] or piece .. ' ' .. color )	end	return string.format( '[[Tập tin:Chess %s%st45.svg|%dx%dpx|alt=%s|%s|link=]]', piece, color, size, size, alt, alt )end	local function innerboard(args, size, rev)	local root = mw.html.create('div')	root:addClass('chess-board')		:css('position', 'relative')		:wikitext(string.format( '[[Tập tin:Chessboard480.svg|%dx%dpx|link=]]', 8 * size, 8 * size ))		for trow = 1,8 do		local row = rev and trow or ( 9 - trow )		for tcol = 1,8 do			local col = rev and ( 9 - tcol ) or tcol			local piece = args[8 * ( 8 - row ) + col + 2] or ''			if piece:match( '%w%w' ) then				local img = image_square(piece:match('%w%w'), row, col, size )				root:tag('div')					:css('position', 'absolute')					:css('z-index', '3')					:css('top', tostring(( trow - 1 ) * size) .. 'px')					:css('left', tostring(( tcol - 1 ) * size) .. 'px')					:css('width', size .. 'px')					:css('height', size .. 'px')					:wikitext(img)			end		end	end	return tostring(root)endfunction chessboard(args, size, rev, letters, numbers, header, footer, align, clear)	function letters_row( rev, num_lt, num_rt )		local letters = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'}		local root = mw.html.create('')		if num_lt then			root:tag('td')				:css('vertical-align', 'inherit')				:css('padding', '0')		end		for k = 1,8 do			root:tag('td')				:css('padding', '0')				:css('vartical-align', 'inherit')				:css('height', '18px')				:css('width', size .. 'px')				:wikitext(rev and letters[9-k] or letters[k])		end		if num_rt then			root:tag('td')				:css('vertical-align', 'inherit')				:css('padding', '0')		end		return tostring(root)	end		local letters_tp = letters:match( 'both' ) or letters:match( 'top' )	local letters_bt = letters:match( 'both' ) or letters:match( 'bottom' )	local numbers_lt = numbers:match( 'both' ) or numbers:match( 'left' )	local numbers_rt = numbers:match( 'both' ) or numbers:match( 'right' )	local width = 8 * size + 2	if ( numbers_lt ) then width = width + 18 end	if ( numbers_rt ) then width = width + 18 end	local root = mw.html.create('div')		:addClass('thumb')		:addClass(align)		:css('clear', clear)		:css('text-align', 'center')		:css('max-width', (width + 8) .. 'px')	if( header and header ~= '' ) then		root:tag('div'):css('line-height', '130%'):wikitext(header)	end	local div = root:tag('div')		:addClass('thumbinner')		:css('width', width .. 'px')	local b = div:tag('table')		:attr('cellpadding', '0')		:attr('cellspacing', '0')		:css('background', 'white')		:css('font-size', '88%')		:css('border' , '1px #b0b0b0 solid')		:css('padding', '0')		:css('margin', 'auto')	if ( letters_tp ) then		b:tag('tr')			:css('vertical-align', 'middle')			:wikitext(letters_row( rev, numbers_lt, numbers_rt ))	end	local tablerow = b:tag('tr'):css('vertical-align','middle')	if ( numbers_lt ) then 		tablerow:tag('td')			:css('padding', '0')			:css('vertical-align', 'inherit')			:css('width', '18px')			:css('height', size .. 'px')			:wikitext(rev and 1 or 8) 	end	local td = tablerow:tag('td')		:attr('colspan', 8)		:attr('rowspan', 8)		:css('padding', '0')		:css('vertical-align', 'inherit')		:wikitext(innerboard(args, size, rev))		if ( numbers_rt ) then 		tablerow:tag('td')			:css('padding', '0')			:css('vertical-align', 'inherit')			:css('width', '18px')			:css('height', size .. 'px')			:wikitext(rev and 1 or 8) 	end	if ( numbers_lt or numbers_rt ) then		for trow = 2, 8 do			local idx = rev and trow or ( 9 - trow )			tablerow = b:tag('tr')				:css('vertical-align', 'middle')			if ( numbers_lt ) then 				tablerow:tag('td')					:css('padding', '0')					:css('vertical-align', 'inherit')					:css('height', size .. 'px')					:wikitext(idx)			end			if ( numbers_rt ) then 				tablerow:tag('td')					:css('padding', '0')					:css('vertical-align', 'inherit')					:css('height', size .. 'px')					:wikitext(idx)			end		end	end	if ( letters_bt ) then		b:tag('tr')			:css('vertical-align', 'middle')			:wikitext(letters_row( rev, numbers_lt, numbers_rt ))	end	if (footer and footer ~= '') then		div:tag('div')			:addClass('thumbcaption')			:wikitext(footer)	end	return tostring(root)endfunction convertFenToArgs( fen )	-- converts FEN notation to 64 entry array of positions, offset by 2	local res = { ' ', ' ' }	-- Loop over rows, which are delimited by /	for srow in string.gmatch( "/" .. fen, "/%w+" ) do		-- Loop over all letters and numbers in the row		for piece in srow:gmatch( "%w" ) do			if piece:match( "%d" ) then -- if a digit				for k=1,piece do					table.insert(res,' ')				end			else -- not a digit				local color = piece:match( '%u' ) and 'l' or 'd'				piece = piece:lower()				table.insert( res, piece .. color )			end		end	end	return resendfunction convertArgsToFen( args, offset )	function nullOrWhitespace( s ) return not s or s:match( '^%s*(.-)%s*$' ) == '' end	function piece( s ) 		return nullOrWhitespace( s ) and 1		or s:gsub( '%s*(%a)(%a)%s*', function( a, b ) return b == 'l' and a:upper() or a end )	end		local res = ''	offset = offset or 0	for row = 1, 8 do		for file = 1, 8 do			res = res .. piece( args[8*(row - 1) + file + offset] )		end		if row < 8 then res = res .. '/' end	end	return mw.ustring.gsub(res, '1+', function( s ) return #s end )endfunction p.board(frame)	local args = frame.args	local pargs = frame:getParent().args	local size = args.size or pargs.size or '26'	local reverse = ( args.reverse or pargs.reverse or '' ):lower() == "true"	local letters = ( args.letters or pargs.letters or 'both' ):lower() 	local numbers = ( args.numbers or pargs.numbers or 'both' ):lower() 	local header = args[2] or pargs[2] or ''	local footer = args[67] or pargs[67] or ''	local align = ( args[1] or pargs[1] or 'tright' ):lower()	local clear = args.clear or pargs.clear or ( align:match('tright') and 'right' ) or 'none'	local fen = args.fen or pargs.fen			size = mw.ustring.match( size, '[%d]+' ) or '26' -- remove px from size	if (fen) then		align = args.align or pargs.align or 'tright'		clear = args.clear or pargs.clear or ( align:match('tright') and 'right' ) or 'none'		header = args.header or pargs.header or ''		footer = args.footer or pargs.footer or ''		return chessboard( convertFenToArgs( fen ), size, reverse, letters, numbers, header, footer, align, clear )	end	if args[3] then		return chessboard(args, size, reverse, letters, numbers, header, footer, align, clear)	else		return chessboard(pargs, size, reverse, letters, numbers, header, footer, align, clear)	endendfunction p.fen2ascii(frame)	-- {{#gọi:Chessboard|fen2ascii|fen=...}}	local b = convertFenToArgs( frame.args.fen )	local res = '|=\n'	local offset = 2	for row = 1,8 do		local n = (9 - row)		res = res .. n .. ' |' .. 			table.concat(b, '|', 8*(row-1) + 1 + offset, 8*(row-1) + 8 + offset) .. '|=\n'	end	res = mw.ustring.gsub( res,'\| \|', '|  |' )	res = mw.ustring.gsub( res,'\| \|', '|  |' )	res = res .. '   a  b  c  d  e  f  g  h'	return resendfunction p.ascii2fen( frame )	-- {{#gọi:Chessboard|ascii2fen|kl| | |....}}	return convertArgsToFen( frame.args, frame.args.offset or 1 )endreturn p