モジュール:College color/contrast

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-- This submodule is used to generate the complete color contrast table in
-- the documentation for [[Module:College color]]
local contrast = {}
local all_colors = {}

local contrast_mod = require("Module:Color contrast")

local function stripwhitespace(text)
	return text:match("^%s*(.-)%s*$")
end

local 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 unknown
end

local 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 ''
end

function contrast._testtable(args)
	local teamlist = {}
	local aliaslist = {}
	local style = args['style']
	local data_module = args['data'] or "Module:College 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>ERROR</span>')
		end
		for i=1,3 do
			res:tag('td')
				:css('background', c[i] and ('#' .. c[i]) or 'transparent')
				:wikitext(c[i] and '' or 'X')
		end
		for i=1,3 do
			local j = math.fmod(i,3) + 1
			res:tag('td'):wikitext(color_contrast_ratio(c[i],c[j]))
		end
		res:tag('td'):wikitext(color_contrast_ratio(c[1],'FFFFFF'))
		res:tag('td'):wikitext(color_contrast_ratio(c[1],'000000'))
		local r = ''
		for k, v in pairs(c) do
			if ( type(k) == 'string' and mw.ustring.match(k, '^cite') ) then
				r = r .. '<ref>' .. v .. '</ref>'
			end
			if( type(k) == 'string' and mw.ustring.match(k, '^ref') ) then
				local rt = mw.ustring.gsub(v, '^%s*https?://(.*)', '%1') or ''
				rt = mw.ustring.gsub(rt, '^(.-)/.*', '%1')
				rt = mw.ustring.gsub(rt, '^www%.(.-)$', '%1') or rt 
				r = r .. '<ref>[' .. v .. ' ' .. rt .. ']</ref>'
			end
		end
		res:tag('td'):wikitext(r)
		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 />aka ' .. 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)
	local row = root:tag('tr')
	row:tag('th')
		:attr('rowspan',2)
		:wikitext('Team')
	for i=1,3 do
		row:tag('th')
			:addClass('unsortable')
			:attr('rowspan',2)
			:wikitext(i)
	end
	row:tag('th')
		:attr('colspan', 5)
		:wikitext('Contrast')
	row:tag('th')
		:attr('rowspan',2)
		:wikitext('refs')
	row = root:tag('tr')
	for i=1,3 do
		local j = math.fmod(i,3) + 1
		row:tag('th'):wikitext(i .. '/' .. j)
	end
	row:tag('th'):wikitext('1/w')
	row:tag('th'):wikitext('1/b')
	for k, team in pairs( teamlist ) do
		row = root:tag('tr')
		row:wikitext(table_row(team .. (aliaslist[team] or ''), get_colors(team)))
	end
	
	return tostring(root) .. '{{hidden begin|title=References|toggle=left}}{{reflist}}{{hidden end}}'
end

function contrast._exampletable(frame, args, styletemplate)
	local teamlist = {}
	local style = args['style']
	local data_module = args['data'] or "Module:College color/data"
	all_colors = mw.loadData(data_module)
	
	local function stripestyle(frame, in_args)
		return frame:expandTemplate{ title = styletemplate, args = in_args }
	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
				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')
	if( args['title'] ) then
		root:tag('caption'):wikitext(args['title'])
	end
	root:addClass('infobox')
		:css('text-align', 'center')
		:cssText(style)
	for k, team in pairs( teamlist ) do
		local cell = root:tag('tr'):tag('th')
		cell
			:cssText(stripestyle(frame,{team}))
			:wikitext(team)
	end
	
	return tostring(root)
end

function contrast.testtable(frame)
	return frame:preprocess(contrast._testtable(frame.args))
end

function contrast.stripetable(frame)
	return contrast._exampletable(frame,frame.args, 'College stripe style')
end

function contrast.header1table(frame)
	return contrast._exampletable(frame,frame.args, 'NCAA color cell')
end

function contrast.header2table(frame)
	return contrast._exampletable(frame,frame.args, 'NCAA secondary color cell')
end

return contrast