local p = {}
local cfg, nrows, ncols
local function innerboard(args, size, rev)
pattern = cfg.pattern or '%w%w'
local root = mw.html.create('div')
root:addClass('chess-pieces notheme')
:css('position', 'relative')
:wikitext(cfg.image_board(size))
for trow = 1,nrows do
local row = rev and trow or ( 1 + nrows - trow )
for tcol = 1,ncols do
local col = rev and ( 1 + ncols - tcol ) or tcol
local piece = args[ncols * ( nrows - row ) + col + 2] or ''
if piece:match( pattern ) then
local img = cfg.image_square(piece:match(pattern), row, col, size )
root:tag('div')
:css('top', tostring(( trow - 1 ) * size) .. 'px')
:css('left', tostring(( tcol - 1 ) * size) .. 'px')
:wikitext(img)
end
end
end
return tostring(root)
end
function chessboard(args, size, rev, letters, numbers, header, footer, align, clear)
function letters_row( rev, num_lt, num_rt )
local letters = cfg.letters()
local root = mw.html.create('')
if num_lt then
root:tag('td')
end
for k = 1,ncols do
root:tag('td')
:css('height', '18px')
:css('width', size .. 'px')
:wikitext(rev and letters[1+ncols-k] or letters[k])
end
if num_rt then
root:tag('td')
end
return tostring(root)
end
local letters_top = letters:match( 'both' ) or letters:match( 'top' )
local letters_bottom = letters:match( 'both' ) or letters:match( 'bottom' )
local numbers_left = numbers:match( 'both' ) or numbers:match( 'left' )
local numbers_right = numbers:match( 'both' ) or numbers:match( 'right' )
local width = ncols * size + 2
if ( numbers_left ) then width = width + 18 end
if ( numbers_right ) then width = width + 18 end
local root = mw.html.create('div')
:addClass('chessboard')
:addClass('thumb')
:addClass('noviewer')
:addClass(align)
if( header and header ~= '' ) then
root:tag('div')
:addClass('center')
:css('line-height', '130%')
:css('margin', '0 auto')
:css('max-width', (width + ncols) .. 'px')
: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')
if ( letters_top ) then
b:tag('tr')
:wikitext(letters_row( rev, numbers_left, numbers_right ))
end
local tablerow = b:tag('tr')
if ( numbers_left ) then
tablerow:tag('td')
:css('width', '18px')
:css('height', size .. 'px')
:wikitext(rev and 1 or nrows)
end
local td = tablerow:tag('td')
:attr('colspan', ncols)
:attr('rowspan', nrows)
:wikitext(innerboard(args, size, rev))
if ( numbers_right ) then
tablerow:tag('td')
:css('width', '18px')
:css('height', size .. 'px')
:wikitext(rev and 1 or nrows)
end
if ( numbers_left or numbers_right ) then
for trow = 2, nrows do
local idx = rev and trow or ( 1 + nrows - trow )
tablerow = b:tag('tr')
if ( numbers_left ) then
tablerow:tag('td')
:css('height', size .. 'px')
:wikitext(idx)
end
if ( numbers_right ) then
tablerow:tag('td')
:css('height', size .. 'px')
:wikitext(idx)
end
end
end
if ( letters_bottom ) then
b:tag('tr')
:wikitext(letters_row( rev, numbers_left, numbers_right ))
end
if footer and mw.text.trim(footer)~='' then
div:tag('div')
:addClass('thumbcaption')
:wikitext(footer)
end
return tostring(root) ..
mw.getCurrentFrame():extensionTag( 'templatestyles', '', { src = 'Module:Chessboard/sandbox/styles.css' } )
end
function 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 res
end
function 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 )
end
function p.board(frame)
local args = frame.args
local pargs = frame:getParent().args
local style = args.style or pargs.style or 'Chess'
cfg = require('Module:Chessboard/' .. style .. '/sandbox')
nrows, ncols = cfg.dims()
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[nrows*ncols + 3] or pargs[nrows*ncols + 3] 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
local pgn = args.pgn or pargs.pgn
size = mw.ustring.match( size, '[%d]+' ) or '26' -- remove px from size
if (pgn) then
local pgnModule = require('Module:Pgn')
metadata, moves = pgnModule.main(pgn)
fen = moves[#moves]
end
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)
end
end
-- Generates an HTML board of a specific size
function p.htmlBoard(frame)
local args = require("Module:Arguments").getArgs(frame)
local width = tonumber(args.width or '8')
local light = args.light or '#FFFFFF00'
local dark = args.dark or '#808080'
local tbl = mw.html.create('table')
tbl:css('table-layout', 'fixed'):css('border', 'none'):css('border-collapse', 'collapse'):css('width', '30%'):css('aspect-ratio', '1 / 1'):css('cellspacing', '0'):css('cellpadding', '0'):css('margin:0px')
local rank = width + 2
local file = 1
local numberedarg = 1
local alignment = args[numberedarg] or ''
local root = mw.html.create('div')
:addClass('chessboard')
:addClass('thumb')
:addClass('noviewer')
:addClass(alignment)
numberedarg = numberedarg + 1
local title = args[numberedarg] or ''
numberedarg = numberedarg + 1
while rank > 0 do
local row = tbl:tag('tr')
while file <= width + 2 do
if (rank == 1 or rank == width + 2) and (file == 1 or file == width + 2) then
row
:tag('th')
:css('min-width', (1 / (width + 2) * 100) .. "%")
:css('max-width', (1 / (width + 2) * 100) .. "%")
:css('height', 'auto')
:css('aspect-ratio', '1 / 1')
:wikitext('')
elseif (rank == 1 or rank == width + 2) then
-- get letter corresponding to file
local alphabet = "abcdefghijklmnopqrstuvwxyz"
local fileLetter = alphabet:sub(math.mod(file - 2, 26) + 1, math.mod(file - 2, 26) + 1)
local toadd = ''
for n=1, math.ceil(file / 26), 1 do
toadd = toadd .. fileLetter
end
row
:tag('th')
:css('min-width', (1 / (width + 2) * 100) .. "%")
:css('max-width', (1 / (width + 2) * 100) .. "%")
:css('overflow', 'hidden')
:css('aspect-ratio', '1 / 1')
:wikitext(toadd)
:done()
elseif (file == 1 or file == width + 2) then
row
:tag('th')
:css('min-width', (1 / (width + 2) * 100) .. "%")
:css('max-width', (1 / (width + 2) * 100) .. "%")
:css('overflow', 'hidden')
:css('aspect-ratio', '1 / 1')
:wikitext(rank - 1)
else
-- get the HTML chess piece specified for this square
-- currently supports standard chess set
-- @todo specify appropriate font especially one that supports fairy chess pieces
local pieceArg = args[numberedarg] or ''
local pieceLetter = pieceArg:sub(1, 1)
local pieceColor = pieceArg:sub(2, 2)
local pieceDec = 9811
if pieceLetter == "p" then
pieceDec = pieceDec + 6
elseif pieceLetter == "n" then
pieceDec = pieceDec + 5
elseif pieceLetter == "b" then
pieceDec = pieceDec + 4
elseif pieceLetter == "r" then
pieceDec = pieceDec + 3
elseif pieceLetter == "q" then
pieceDec = pieceDec + 2
elseif pieceLetter == "k" then
pieceDec = pieceDec + 1
end
if (pieceDec > 9811 and pieceColor == "d") then
pieceDec = pieceDec + 6
end
-- color the chessboard appropriately
if (math.mod(file, 2) == math.mod(rank, 2)) then
row
:tag('td')
:css('background-color', dark)
:css('color', 'inherit')
:css('min-width', (1 / (width + 2) * 100) .. "%")
:css('max-width', (1 / (width + 2) * 100) .. "%")
:css('overflow', 'hidden')
:css('aspect-ratio', '1 / 1')
:css('border-width', '0px')
:css('font-family', 'monospace')
:wikitext('<div style="display: flex;justify-content: center;align-items: center;font-size: 2em;">' .. (pieceDec == 9811 and ' ' or '&#' .. pieceDec .. ';︎') .. '</div>')
else
row
:tag('td')
:css('background-color', light)
:css('color', 'inherit')
:css('min-width', (1 / (width + 2) * 100) .. "%")
:css('max-width', (1 / (width + 2) * 100) .. "%")
:css('overflow', 'hidden')
:css('aspect-ratio', '1 / 1')
:css('border-width', '0px')
:css('font-family', 'monospace')
:wikitext('<div style="display: flex;justify-content: center;align-items: center;font-size: 2em;">' .. (pieceDec == 9811 and ' ' or '&#' .. pieceDec .. ';︎') .. '</div>')
end
numberedarg = numberedarg + 1
end
file = file + 1
end
file = 1
rank = rank - 1
end
local caption = args[numberedarg]
root
:tag('div')
:addClass('center')
:wikitext(title)
:done()
:wikitext(tostring(tbl))
:tag('div')
:addClass('thumbcaption')
:wikitext(caption)
:done()
return root
end
return p
