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:Sports color/' .. (args['sport'] or 'basketball'))

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 .. ' ERROR')

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

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 ) .. '
Also known as ' .. 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('Team')

for i=1,4 do

row:tag('th')

:addClass('unsortable')

:attr('rowspan',2)

:wikitext(i)

end

row:tag('th')

:attr('colspan', 2)

:wikitext('Contrast')

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'

.. ' the data module. For more'

.. ' information, see Color contrast ratio.'

end

if note ~= then

note = mw.html.create('div'):cssText(style):wikitext(note)

end

return tostring(root) .. tostring(note)

end

function contrast.testtable(frame)

return frame:preprocess(contrast._testtable(frame.args))

end

return contrast

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