Module:Chessboard: Difference between revisions

Content deleted Content added
formatting, removal of superfluous parens, no need for "else" after "return".
m use clearer variable names - took me a while to figure out what these mean
 
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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 image_squareletters_row( pc, rowrev, colnum_lt, sizenum_rt )
local letters = cfg.letters()
local colornames = { l = 'white', d = 'black' }
local root = mw.html.create('')
local piecenames = {
if num_lt then
p = 'pawn',
root:tag('td')
r = 'rook',
end
n = 'knight',
for k = 1,ncols do
b = 'bishop',
root:tag('td')
q = 'queen',
:css('height', '18px')
k = 'king',
:css('width', size .. 'px')
a = 'archbishop',
:wikitext(rev and letters[1+ncols-k] or letters[k])
c = 'chancelor',
end
z = 'champion',
if num_rt then
w = 'wizard',
root:tag('td')
t = 'fool',
end
h = 'upside-down pawn',
return tostring(root)
m = 'upside-down rook',
end
s = 'upside-down knight',
f = 'upside-down king',
local letters_top = letters:match( 'both' ) or letters:match( 'top' )
e = 'upside-down bishop',
local letters_bottom = letters:match( 'both' ) or letters:match( 'bottom' )
g = 'upside-down queen',
local numbers_left = numbers:match( 'both' ) or numbers:match( 'left' )
}
local numbers_right = numbers:match( 'both' ) or numbers:match( 'right' )
local symnames = {
local width = ncols * size + 2
xx = 'black cross',
if ( numbers_left ) then width = width + 18 end
ox = 'white cross',
if ( numbers_right ) then width = width + 18 end
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',
x0 = 'zero',
x1 = 'one',
x2 = 'two',
x3 = 'three',
x4 = 'four',
x5 = 'five',
x6 = 'six',
x7 = 'seven',
x8 = 'eight',
x9 = 'nine',
}
function colchar( col ) return ( "abcdefgh" ):sub( col, col ) end
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('[[File:Chess %s%st45.svg|%dx%dpx|alt=%s|%s]]', piece, color, size, size, alt, alt)
end
 
local root = mw.html.create('div')
function letters_row( rev, num_lt, num_rt )
:addClass('chessboard')
local res = '<tr style="vertical-align:middle">'
:addClass('thumb')
if ( num_lt ) then
:addClass('noviewer')
res = res .. '<td></td>'
:addClass(align)
end
if( header and header ~= if ( rev'' ) then
root:tag('div')
res = res .. '<td style="height:18px">h</td><td>g</td><td>f</td><td>e</td><td>d</td><td>c</td><td>b</td><td>a</td>'
:addClass('center')
else
:css('line-height', '130%')
res = res .. '<td style="height:18px">a</td><td>b</td><td>c</td><td>d</td><td>e</td><td>f</td><td>g</td><td>h</td>'
:css('margin', '0 auto')
end
:css('max-width', (width + ncols) .. 'px')
if ( num_rt ) then
:wikitext(header)
res= res .. '<td></td>'
end
local div = root:tag('div')
res = res .. '</tr>'
:addClass('thumbinner')
return res
:css('width', width .. 'px')
end
local b = div:tag('table')
local letters_tp = (letters:match('both') or letters:match('top'))
:attr('cellpadding', '0')
local letters_bt = (letters:match('both') or letters:match('bottom'))
:attr('cellspacing', '0')
local numbers_lt = (numbers:match('both') or numbers:match('left'))
local numbers_rt = (numbers:match('both') or numbers:match('right'))
local width = 8*size + 6
if ( numbers_lt ) then width = width + 18 end
if ( numbers_rt ) then width = width + 18 end
 
if ( letters_top ) then
local b = ''
b:tag('tr')
local caption = ''
:wikitext(letters_row( rev, numbers_left, numbers_right ))
end
if ( letters_tp ) then b = b .. letters_row(rev, numbers_lt, numbers_rt) .. '\n' end
local tablerow = b:tag('tr')
b = b .. '<tr style="vertical-align:middle">'
if ( numbers_left ) then
if ( numbers_lt ) then b = b .. '<td style="width:18px;height:' .. size .. 'px">' .. (rev and 1 or 8) .. '</td>' end
tablerow:tag('td')
b = b .. '<td colspan=8 rowspan=8><div class="chess-board" style="position:relative;">'
:css('width', '18px')
b = b .. string.format('[[File:Chessboard480.png|%dx%dpx|link=]]', 8*size, 8*size)
:css('height', size .. 'px')
for trow = 1,8 do
local row = :wikitext(rev and trow1 or (9nrows) - trow)
end
for tcol = 1,8 do
local coltd = rev and tablerow:tag(9 - tcol'td') or tcol
:attr('colspan', ncols)
local piece = args[8*(8 - row) + col + 2] or ''
:attr('rowspan', nrows)
if (piece:match('%w%w')) then
:wikitext(innerboard(args, size, rev))
local img = image_square(piece:match('%w%w'), row, col, size )
b = b .. string.format('<div style="position:absolute;z-index:3;top:%dpx;left:%dpx;">%s</div>\n',
if ( numbers_right ) then
(trow-1)*size, (tcol-1)*size, img)
tablerow:tag('td')
end
:css('width', '18px')
end
:css('height', size .. 'px')
end
:wikitext(rev and 1 or nrows)
b = b .. '</div></td>'
end
if ( numbers_rt ) then b = b .. '<td style="width:18px;height:' .. size ..'px">' .. (rev and 1 or 8) .. '</td>' end
if ( numbers_ltnumbers_left or numbers_rtnumbers_right ) then
for trow = 2,8 nrows do
local rowidx = rev and trow or (9 1 + nrows - trow )
tablerow = b:tag('tr')
b = b .. '<tr style="vertical-align:middle">'
if ( numbers_left ) then
if (numbers_lt) then b = b .. '<td style="height:' .. size .. 'px">' .. row .. '</td>' end
tablerow:tag('td')
if (numbers_rt) then b = b .. '<td style="height:' .. size .. 'px">' .. row .. '</td>' end
:css('height', size .. 'px')
b = b .. '</tr>\n'
:wikitext(idx)
end
end
if ( numbers_right ) then
if ( letters_bt ) then b = b .. letters_row(rev, numbers_lt, numbers_rt) .. '\n' end
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:match and mw.text.trim(footer)~='^%s*$') then
div:tag('div')
then
:addClass('thumbcaption')
else
:wikitext(footer)
caption = '<div class="thumbcaption" style="margin-left:4px;margin-right:4px;">' .. footer .. '</div>\n'
end
 
return tostring(root) ..
return '<div class="thumb ' .. align .. '" style="clear:' .. clear .. '; width:' .. width .. 'px; text-align:center">'
mw.getCurrentFrame():extensionTag( 'templatestyles', '', { src = 'Module:Chessboard/styles.css' } )
.. header .. '\n<div class="thumbinner" style="width:' .. width .. 'px; text-align:center">\n'
.. '<table cellpadding=0 cellspacing=0 style="background:white; font-size:88%; border:1px #b0b0b0 solid; padding:0; '
.. 'margin:2px auto;">\n' .. b .. '\n</table>\n' .. caption .. '</div></div>'
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
then -- if a digit
table.insert(res,' ')
for k=1,piece do
end
table.insert(res,' ')
else -- not a digit
end
local color = piece:match( '%u' ) and 'l' or 'd'
else -- not a digit
piece = piece:lower()
local color = piece:match( '%u' ) and 'l' or 'd'
table.insert( res, piece .. color )
piece = piece:lower()
end
table.insert(res, piece .. color )
end
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 sizestyle = args.sizestyle or pargs.sizestyle or '26Chess'
cfg = require('Module:Chessboard/' .. style)
local reverse = ( args.reverse or pargs.reverse or '' ):lower() == "true"
nrows, ncols = cfg.dims()
local letters = ( args.letters or pargs.letters or 'both' ):lower()
local numbers = ( args.numbers or pargs.numbers or 'both' ):lower()
local headersize = args[2].size or pargs[2].size or '26'
local footerreverse = ( args[67].reverse or pargs[67].reverse or '' ):lower() == "true"
local alignletters = ( args[1].letters or pargs[1].letters or 'trightboth' ):lower()
local clearnumbers = ( args.clearnumbers or pargs.clearnumbers or ('both' align):matchlower('tright') and 'right' ) or 'none'
local fenheader = args.fen[2] or pargs.fen[2] or ''
local footer = args[nrows*ncols + 3] or pargs[nrows*ncols + 3] or ''
local align = ( args[1] or pargs[1] or 'tright' ):lower()
size = mw.ustring.match( size, '[%d]+' ) or '26' -- remove px from size
local clear = args.clear or pargs.clear or ( align:match('tright') and 'right' ) or 'none'
if (fen) then
local alignfen = args.alignfen or pargs.align or 'tright'fen
local headerpgn = args.headerpgn or pargs.header or ''pgn
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
 
function p.fen2ascii(frame)
-- {{#invoke: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 res
end
 
size = mw.ustring.match( size, '[%d]+' ) or '26' -- remove px from size
function p.ascii2fen( frame )
if (pgn) then
-- {{#invoke:Chessboard|ascii2fen|kl| | |....}}
local pgnModule = require('Module:Pgn')
return convertArgsToFen( frame.args, frame.args.offset or 1 )
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