Mô đun:Basketball color/contrast

-- This submodule is used to generate the complete color contrast table in-- tài liệu cho [[Mô đun:Basketball color]]local contrast = {}local all_colors = {}local contrast_mod = require("Mô đun:Color contrast")local function stripwhitespace(text)	return text:match("^%s*(.-)%s*$")endlocal function get_colors(team, unknown)	team = stripwhitespace(team or '')	unknown = unknown or {"DCDCDC", "000000"} 	local use_default = {		[""] = 1,		["retired"] = 1,		["free agent"] = 1,	} 	local colors = nil 	if ( team and use_default[team:lower()] ) then		colors = {"DCDCDC", "000000"}	else		colors = all_colors[team]		if ( colors and type(colors) == 'string' ) then			colors = all_colors[colors]		end	end 	return colors or unknownendlocal function color_contrast_ratio(hex1, hex2)	if( hex1 and hex2) then		local r = contrast_mod._ratio({'#' .. hex1, '#' .. hex2, error = 0})		if( r > 0 ) then			r = (r > 1) and r or (1/r)			r = math.floor(r * 100 + 0.5) / 100			return  (r > 1) and r or (1/r)		end	end	return ''endfunction contrast._testtable(args)	local teamlist = {}	local aliaslist = {}	local style = args['style']	local data_module = args['data'] or "Mô đun:Basketball color/data"	all_colors = mw.loadData(data_module)	-- helper function	local function table_row(t, c)		local res = mw.html.create('')		if( c[1] ) then			res:tag('td'):wikitext(t)		else			res:tag('td'):wikitext(t .. ' <span class=error>LỖI</span>')		end		for i=1,4 do			res:tag('td')				:css('background', c[i] and ('#' .. c[i]) or 'transparent')				:wikitext(c[i] and '' or 'X')		end		res:tag('td'):wikitext(color_contrast_ratio(c[1],c[2]))		res:tag('td'):wikitext(color_contrast_ratio(c[4],c[3]))		return tostring(res)	end    -- list of teams	if( args and args[1] ) then		for k, team in pairs(args) do			if type(k) == 'number' then				table.insert(teamlist, team)			end		end	else		for team, colors in pairs( all_colors ) do			if type(colors) == 'string' then				aliaslist[colors] = (aliaslist[colors] or '') .. '<br />Còn được biết là ' .. team			else				table.insert(teamlist, team)			end		end		table.sort(teamlist)		table.insert(teamlist, 'Free agent')		table.insert(teamlist, 'Retired')	end		-- build table	local root = mw.html.create('table')	root:addClass('wikitable sortable')		:css('background', 'transparent')		:css('font-size', '90%')		:css('line-height', '100%')		:cssText(style)	if args['caption'] then		root:tag('caption'):wikitext(args['caption'])	end	local row = root:tag('tr')	row:tag('th')		:attr('rowspan',2)		:wikitext('Đội')	for i=1,4 do		row:tag('th')			:addClass('unsortable')			:attr('rowspan',2)			:wikitext(i)	end	row:tag('th')		:attr('colspan', 2)		:wikitext('Độ tương phản')	row = root:tag('tr')	row:tag('th'):wikitext('1/2')	row:tag('th'):wikitext('4/3')	for k, team in pairs( teamlist ) do		row = root:tag('tr')		row:wikitext(table_row(team .. (aliaslist[team] or ''), get_colors(team)))	end	if style and style ~= '' then		style = 'font-size:90%; padding:0.4em; width:32em; border:1px #aaa solid;' .. style	end	local note = nil	if args['note'] then		note = args['note']	else		note = 'The numeric columns are the calculated contrast ratio for the'		.. ' first/second and the fourth/third colors. Anything lower than 3 is'		.. ' very poor contrast and should be changed in'		.. ' [[Mô đun:Basketball color/data|the data module]]. For more'		.. ' information, see [[Bản mẫu:Color contrast ratio]].'	end	if note ~= '' then		note = mw.html.create('div'):cssText(style):wikitext(note)	end	return tostring(root) .. tostring(note)endfunction contrast.testtable(frame)	return frame:preprocess(contrast._testtable(frame.args))endreturn contrast