Documentation for this module may be created at Module:Build bracket/doc

local p = {}
local entries = {}
local pathEntries = {}
local pathcolor
local shift = {}
local hascross = {}
local teams_per_match = {}
local rlegs = {}
local maxlegs = {}
local autolegs
local byes = {}
local hide = {}
local matchgroup = {}
local autocol
local seeds
local forceseeds
local nowrap
local boldwinner
local aggregate
local paramstyle
local masterindex

local function isempty(s)
	return s==nil or s==''
end

local function notempty(s)
	return s~=nil and s~=''
end

local function bargs(s)
	return pargs[s] or fargs[s]
end

local function toChar(num)
	return string.char(string.byte("a")+num-1)
end

local function split(str,delim,tonum)
	result = {};
	local a = "[^"..table.concat(delim).."]+"
		for w in str:gmatch(a) do
			if tonum==true then
				table.insert(result, tonumber(w));
			else
				table.insert(result, w);
			end
		end
	return result;
end

local function getWidth(ctype, default)
	local result = bargs(ctype..'-width')
	if isempty(result) then return default end
	if tonumber(result)~=nil then return result..'px' end
	return result
end

local function matchGroups()
	for j=minc,c do
		matchgroup[j]={}
		for i=1,r do
			if entries[j][i]~= nil and entries[j][i]['ctype']=='team' then
				matchgroup[j][i]=math.ceil(entries[j][i]['index']/teams_per_match[j])
				entries[j][i]['group'] = math.ceil(entries[j][i]['index']/teams_per_match[j])
			end
		end
	end
end

local function teamLegs(j,i)
	local legs = rlegs[j]
	if notempty(entries[j][i]['legs']) then
		legs = tonumber(entries[j][i]['legs'])
	end
	if autolegs then
		local l=1
		repeat l=l+1
		until isempty(entries[j][i]['score'][l])
		legs = l-1
	end
	return legs
end

local function boldWinner()
	local function boldScore(j,i,l)
		if entries[j][i]~= nil and entries[j][i]['ctype']=='team' then
			local myscore = entries[j][i]['score'][l]:gsub('%W','')
			if myscore == "" or myscore:find("%D") then return 'normal'
				else myscore=tonumber(myscore) end
			local compscore = {}
			for k,v in pairs(matchgroup[j]) do
				if matchgroup[j][i]==v and k~=i then
					local theirscore = entries[j][k]['score'][l] or ''
					theirscore = theirscore:gsub('%W','')
					if theirscore== "" or theirscore:find("%D") then return 'normal'
						else table.insert(compscore,tonumber(theirscore)) end
				end
			end
			for k,v in pairs(compscore) do
				if myscore<=v then return 'normal' end
			end
			if l~='agg' then
				entries[j][i]['wins'] = entries[j][i]['wins']+1
			else
				entries[j][i]['aggwins'] = 1
			end
			return 'bold'
		end
	end
	local function boldTeam(j,i,agg)
		local wins
		local legs = teamLegs(j,i)
		if agg~=true then
			wins = 'wins'
			if entries[j][i][wins]>legs/2 then 
				return 'bold' 
			end
			if autolegs then
				for l=1,legs do
					if notempty(entries[j][i]['score'][l]) and string.find(entries[j][i]['score'][l],"nbsp") then 
						return 'normal' 
					end
				end
			else
				for l=1,legs do
					if isempty(entries[j][i]['score'][l]) or string.find(entries[j][i]['score'][l],"nbsp") then 
						return 'normal' 
					end
				end
			end
		else 
			wins = 'aggwins'
		end
		
		local compteam = {}
		for k,v in pairs(matchgroup[j]) do
			if matchgroup[j][i]==v and k~=i then
				table.insert(compteam,tonumber(entries[j][k][wins]))
			end
		end
		for k,v in pairs(compteam) do
			if entries[j][i][wins]<=v then 
				return 'normal' 
			end
		end
		return 'bold'
	end
	for j=minc,c do
		for i=1,r do
			if entries[j][i]~= nil and entries[j][i]['ctype']=='team' then
				entries[j][i]['wins'] = 0
				entries[j][i]['aggwins'] = 0
			end
		end
		for i=1,r do
			if entries[j][i]~= nil and entries[j][i]['ctype']=='team' then
				local legs = teamLegs(j,i)
				for l=1,legs do
					entries[j][i]['score']['weight'][l] = boldScore(j,i,l)
				end
				if aggregate and legs>1 then
					entries[j][i]['score']['weight']['agg'] = boldScore(j,i,'agg')
				end
			end
		end
		for i=1,r do
			if entries[j][i]~= nil and entries[j][i]['ctype']=='team' then
				local agg
				local legs = teamLegs(j,i)
				if aggregate and legs>1 then agg=true end
				entries[j][i]['weight'] = boldTeam(j,i,agg)
			end
		end
	end
end

local function isBlankEntry(col,row,ctype)
	if isempty(entries[col][row]) then return true end
	if isempty(entries[col][row]['team']) and isempty(entries[col][row]['text']) then return true end
	return false
end

local function showSeeds(j,i)
	local showseed=false
	if forceseeds or notempty(entries[j][i]['seed']) then
		showseed=true
	else
		for k=1,teams_per_match[j]-1 do
			if notempty(entries[j][i+2*k]) and entries[j][i]['group']==entries[j][i+2*k]['group'] and notempty(entries[j][i+2*k]['seed']) then
				showseed=true
			end
			if notempty(entries[j][i-2*k]) and entries[j][i]['group']==entries[j][i-2*k]['group'] and notempty(entries[j][i-2*k]['seed']) then
				showseed=true
			end
		end
	end
	return showseed
end


local function blankCell(tbl,j,i,rowspan,colspan,text,align)
	local cell = tbl:tag('td')
	if colspan~=1 then
		cell:attr('colspan',colspan)
	end
	if rowspan~=1 then
		cell:attr('rowspan',rowspan)
	end
	if notempty(align) then
		cell:css('text-align',align)
	end
	if notempty(text) then
		if nowrap then
			cell:css('white-space', 'nowrap')
		end
		cell:wikitext(text)
	end
	return cell
end

local function headerCell(tbl,j,i,colspan)
	local cell = tbl:tag('td')
					:attr('rowspan',2)
					:css('text-align','center')
					:css('border','1px solid #aaa')
					:css('background-color',entries[j][i]['shade'])
					:wikitext(entries[j][i]['header'])
	if colspan~=1 then
		cell:attr('colspan',colspan)
	end
	if nowrap then
		cell:css('white-space', 'nowrap')
	end
	if entries[j][i]['position']=='top' and entries[j][i-2]~=nil and entries[j][i-2]['ctype']~='blank' and entries[j][i-2]['ctype']~='text' and entries[j][i-2]['ctype']~='group' and (not byes[j][entries[j][i]['headerindex']] or not isBlankEntry(j,i-2)) then
		cell:css('border-top','2px solid #aaa')
	end
	return cell
end

local function teamCell(tbl,k,j,i,l,colspan)
	local bg = '#F2F2F2'
	local cell = tbl:tag('td')
					:attr('rowspan',2)
					:css('border','1px solid #aaa')
	if colspan~=1 and colspan~=nil then
		cell:attr('colspan',colspan)
	end
	if k=='seed' or k=='score' then
		cell:css('text-align','center')
	end
	if k=='seed' or k=='score' or nowrap then
		cell:css('white-space', 'nowrap')
	end
	if k=='seed' then
		cell:css('border-right','2px solid #aaa')
	else
		bg='#F9F9F9'
	end
	if k=='team' then 
		cell:css('padding-left','0.3em') 
	end
	if l=='agg' then
		cell:css('border-left','2px solid #aaa')
	end	
	if (l==nil and entries[j][i]['weight']=='bold') or entries[j][i]['score']['weight'][l]=='bold' then
		cell:css('font-weight','bold')
	end
	if entries[j][i]['position']=='top' and entries[j][i-2]~=nil and entries[j][i-2]['ctype']~='blank' and entries[j][i-2]['ctype']~='text' and entries[j][i-2]['ctype']~='group' and (not byes[j][entries[j][i]['headerindex']] or not isBlankEntry(j,i-2)) then
		cell:css('border-top','2px solid #aaa')
	end
	cell:css('background-color',bg)
	if l==nil then
		cell:wikitext(entries[j][i][k])
	else
		cell:wikitext(tostring(entries[j][i][k][l]))
	end
	return cell
end

local function insertEntry(tbl,j,i)
	local entry_colspan=maxlegs[j]+2
	if not seeds then entry_colspan=entry_colspan-1	end
	if (aggregate and maxlegs[j]>1) or maxlegs[j]==0 then
		entry_colspan=entry_colspan+1
	end
	
	if entries[j][i]~=nil and entries[j][i]['ctype']=='blank' then
		return
	end
	
	if entries[j][i]==nil then
		if entries[j][i-1]~=nil or i==1 then
			local rowspan = 0
			local row = i
			repeat
				rowspan=rowspan+1
				row=row+1
			until entries[j][row]~=nil or row>r
			return blankCell(tbl,j,i,rowspan,entry_colspan)
		else
			return
		end
	end

	if entries[j][i]['ctype']=='header' then
		if byes[j][entries[j][i]['headerindex']] then
			local emptyround = true
			local row = i+1
			repeat
				if not isBlankEntry(j,row) then
					emptyround = false
				end
				row = row+1
			until (entries[j][row]~=nil and entries[j][row]['ctype']=='header') or row>r
			if emptyround == true then
				return blankCell(tbl,j,i,2,entry_colspan)
			end
		end
		
		if hide[j][entries[j][i]['headerindex']] then
			return blankCell(tbl,j,i,2,entry_colspan)
		end
		
		if isempty(entries[j][i]['header']) then
			if entries[j][i]['headerindex']==1 then
				if     j==c   then entries[j][i]['header'] = 'Final'
				elseif j==c-1 then entries[j][i]['header'] = 'Semifinals'
				elseif j==c-2 then entries[j][i]['header'] = 'Quarterfinals'
				else			   entries[j][i]['header'] = 'Round '..j
				end
			else
				entries[j][i]['header'] = 'Lower round '..j
			end
		end
		
		return headerCell(tbl,j,i,entry_colspan)
	end
	
	if entries[j][i]['ctype']=='team' then
		if byes[j][entries[j][i]['headerindex']] and isBlankEntry(j,i) then
			return blankCell(tbl,j,i,2,entry_colspan)
		end
		if hide[j][entries[j][i]['headerindex']] then
			return blankCell(tbl,j,i,2,entry_colspan)
		end
		
		local legs = teamLegs(j,i)
		local team_colspan
		
		team_colspan = maxlegs[j]-legs+1
		if aggregate and legs==1 and maxlegs[j]>1 then
			team_colspan=team_colspan+1
		end
		if maxlegs[j]==0 then 
			team_colspan=team_colspan+1
		end
		
		if seeds then
			if showSeeds(j,i)==true then
				teamCell(tbl,'seed',j,i)
			else
				team_colspan=team_colspan+1
			end
		end
		teamCell(tbl,'team',j,i,nil,team_colspan)
		for l=1,legs do
			teamCell(tbl,'score',j,i,l)
		end
		if aggregate and legs>1 then
			teamCell(tbl,'score',j,i,'agg')
		end
	end
	
	if entries[j][i]['ctype']=='text' then
		blankCell(tbl,j,i,2,entry_colspan,entries[j][i]['text'])
	end
	
	if entries[j][i]['ctype']=='group' then
		local colspan=0
		for m=j,entries[j][i]['colspan']+j-1 do
			colspan=colspan+maxlegs[m]+2
			if not seeds then colspan=colspan-1 end
			if (aggregate and maxlegs[m]>1) or maxlegs[m]==0 then
				colspan=colspan+1
			end
		end
		colspan = colspan+2*(entries[j][i]['colspan']-1)
		blankCell(tbl,j,i,2,colspan,entries[j][i]['group'],'center')
	end
	
	if entries[j][i]['ctype']=='line' then
		tbl:tag('td')
			:attr('rowspan',2)
			:attr('colspan',entry_colspan)
			:css('border-bottom','3px solid black')
			:wikitext(entries[j][i]['text'])
	end
end

local function isRoundHidden(j,i,headerindex)
	if notempty(entries[j][i]['pheader']) then
		hide[j][entries[j][i]['headerindex']] = false
	end
	local row = i+1
	repeat
		if not isBlankEntry(j,row) then
			hide[j][entries[j][i]['headerindex']] = false
		end
		row = row+1
	until (entries[j][row]~=nil and entries[j][row]['ctype']=='header') or row>r
end

local function paramNames(cname,j,i,l)
	local rname = {
			{'RD'..j, bargs('RD'..j..'-altname') or 'RD'..j},
			{'RD'..j..toChar(entries[j][i]['headerindex']),bargs('RD'..j..toChar(entries[j][i]['headerindex'])..'-altname') or 'RD'..j..toChar(entries[j][i]['headerindex'])}
			}
	local name = {cname, bargs(cname..'-altname') or cname}
	local index = {entries[j][i]['index'], entries[j][i]['altindex']}
	local result = {}
	if cname=='header' then
		if entries[j][i]['headerindex']==1 then 
			for k=1,2 do
				table.insert(result,bargs(rname[1][3-k]) or '')
				table.insert(result,bargs(rname[2][3-k]) or '')
			end
		else 
			for k=1,2 do
				table.insert(result,bargs(rname[2][3-k]) or '')
			end
		end
	elseif cname=='pheader' then
		if entries[j][i]['headerindex']==1 then 
			for k=1,2 do
				table.insert(result,pargs[rname[1][3-k]] or '')
				table.insert(result,pargs[rname[2][3-k]] or '')
			end
		else 
			for k=1,2 do
				table.insert(result,pargs[rname[2][3-k]] or '')
			end
		end
	elseif cname=='score' then
		for m=1,2 do for k=1,2 do
			if l==1 then
				table.insert(result,bargs(rname[3-m][3-k]..'-'..name[1]..index[3-m]) or bargs(rname[3-m][3-k]..'-'..name[1]..'0'..index[3-m]) or '')
			end
			table.insert(result,bargs(rname[3-m][3-k]..'-'..name[1]..index[3-m]..'-'..l) or bargs(rname[3-m][3-k]..'-'..name[1]..'0'..index[3-m]..'-'..l) or '')
		end	end
	elseif cname=='shade' then
		for k=1,2 do
			if entries[j][i]['headerindex']==1 then
				table.insert(result,bargs(rname[1][3-k]..'-'..name[1]) or '')
			else
				table.insert(result,bargs(rname[2][3-k]..'-'..name[1]) or '')
			end
		end
		table.insert(result,bargs('RD-shade'))
		table.insert(result,'#F2F2F2')
	elseif cname=='text' then
		for n=1,2 do for m=1,2 do for k=1,2 do
			table.insert(result,bargs(rname[3-m][3-k]..'-'..name[3-n]..index[3-m]) or bargs(rname[3-m][3-k]..'-'..name[3-n]..'0'..index[3-m]) or '')
		end end	end
	else
		for m=1,2 do for k=1,2 do
			table.insert(result,bargs(rname[3-m][3-k]..'-'..name[1]..index[3-m]) or bargs(rname[3-m][3-k]..'-'..name[1]..'0'..index[3-m]) or '')
		end	end
	end
	for k=1,#result do
		if notempty(result[k]) then
			return result[k]
		end
	end
	return ''
end

local function indexedParams(j)
	for i=1,r do
		if entries[j][i]~=nil then
			if entries[j][i]['ctype']=='team' then
				local legs = rlegs[j]
				if forceseeds then
					entries[j][i]['seed'] = bargs(masterindex) or ''
					masterindex = masterindex+1
				end
				entries[j][i]['team'] = bargs(tostring(masterindex)) or ''
				masterindex = masterindex+1
				entries[j][i]['legs'] = paramNames('legs',j,i)
				entries[j][i]['score'] = {}
				entries[j][i]['weight'] = 'normal'
				entries[j][i]['score']['weight'] = {}
				if notempty(entries[j][i]['legs']) then
					legs = tonumber(entries[j][i]['legs'])
				end
				for l=1,legs do
					entries[j][i]['score'][l] = bargs(tostring(masterindex)) or ''
					masterindex = masterindex+1
					entries[j][i]['score']['weight'][l] = 'normal'
				end
				if aggregate and legs>1 then
					entries[j][i]['score']['agg'] = bargs(masterindex) or ''
					masterindex = masterindex+1
					entries[j][i]['score']['weight']['agg'] = 'normal'
				end
			end
			if entries[j][i]['ctype']=='header' then
				entries[j][i]['header'] = paramNames('header',j,i)
				entries[j][i]['pheader'] = paramNames('pheader',j,i)
				entries[j][i]['shade'] = paramNames('shade',j,i)
			end
			if entries[j][i]['ctype']=='text' then
				entries[j][i]['text'] = bargs(tostring(masterindex)) or ''
				masterindex = masterindex+1
			end
			if entries[j][i]['ctype']=='group' then
				entries[j][i]['group'] = bargs(tostring(masterindex)) or ''
				masterindex = masterindex+1
			end
			if entries[j][i]['ctype'] == 'line' and entries[j][i]['hastext']==true then
				entries[j][i]['text'] = bargs(masterindex) or ''
				masterindex = masterindex+1
			end
		end
	end
end

local function assignParams()
	masterindex = 1
	local maxcol = 1
	local byerows = 1
	local hiderows = 1
	for j=minc,c do
		rlegs[j] = tonumber(bargs('RD'..j..'-legs')) or tonumber(bargs('legs')) or 1
		if notempty(bargs('RD'..j..'-legs')) or bargs('legs') then autolegs = false end
		if paramstyle == 'numbered' then
			indexedParams(j)
		else
			for i=1,r do
				if entries[j][i]~=nil then
					if entries[j][i]['ctype']=='team' then
						local legs = rlegs[j]
						entries[j][i]['seed'] = paramNames('seed',j,i)
						entries[j][i]['team'] = paramNames('team',j,i)
						entries[j][i]['legs'] = paramNames('legs',j,i)
						entries[j][i]['score'] = {}
						entries[j][i]['weight'] = 'normal'
						entries[j][i]['score']['weight'] = {}
						if notempty(entries[j][i]['legs']) then
							legs = tonumber(entries[j][i]['legs'])
						end
						if autolegs then
							local l=1
							repeat
								entries[j][i]['score'][l] = paramNames('score',j,i,l)
								entries[j][i]['score']['weight'][l] = 'normal'
								l=l+1
							until isempty(paramNames('score',j,i,l))
							legs = l-1
						else
							for l=1,legs do
								entries[j][i]['score'][l] = paramNames('score',j,i,l)
								entries[j][i]['score']['weight'][l] = 'normal'
							end
						end
						if aggregate and legs>1 then
							entries[j][i]['score']['agg'] = paramNames('score',j,i,'agg')
							entries[j][i]['score']['weight']['agg'] = 'normal'
						end
					end
					if entries[j][i]['ctype']=='header' then
						entries[j][i]['header'] = paramNames('header',j,i)
						entries[j][i]['pheader'] = paramNames('pheader',j,i)
						entries[j][i]['shade'] = paramNames('shade',j,i)
					end
					if entries[j][i]['ctype']=='text' then
						entries[j][i]['text'] = paramNames('text',j,i)
					end
					if entries[j][i]['ctype']=='group' then
						entries[j][i]['group'] = paramNames('group',j,i)
					end
					if entries[j][i]['ctype'] == 'line' and entries[j][i]['hastext']==true then
						entries[j][i]['text'] = paramNames('text',j,i)
					end
				end
				if autocol and not isBlankEntry(j,i) then
					maxcol = math.max(maxcol,j)
				end
			end
		end
		for i=1,r do
			if entries[j][i]~=nil and entries[j][i]['ctype']=='header' then 
				isRoundHidden(j,i) 
			end
			if entries[j][i]~=nil and not hide[j][entries[j][i]['headerindex']] then
				if not byes[j][entries[j][i]['headerindex']] or (byes[j][entries[j][i]['headerindex']] and not isBlankEntry(j,i)) then
					byerows = math.max(byerows,i)
				end
			end
		end
	end
	for j=minc,c do
		for k=1,headerindex[j] do
			if byes[j][k] or hide[j][k] then
				r=byerows+1
			end
		end
	end
	if autocol then
		c = maxcol
	end
end

local function getHide(j,headerindex)
	hide[j] = {}
	for k=1,headerindex[j] do
		if bargs('RD'..j..toChar(k)..'-hide')=='yes' or bargs('RD'..j..toChar(k)..'-hide')=='y' then
			hide[j][k]=true
		end
	end
end

local function getByes(j,headerindex)
	byes[j] = {}
	for k=1,headerindex[j] do
		if bargs('byes')=='yes' or bargs('byes')=='y' then
			byes[j][k]=true else byes[j][k]=false
		end
		if bargs('RD'..j..'-byes')=='yes' or bargs('RD'..j..'-byes')=='y' then
			byes[j][k]=true
		elseif bargs('RD'..j..'-byes')=='no' or bargs('RD'..j..'-byes')=='n' then
			byes[j][k]=false
		end
		if bargs('RD'..j..toChar(k)..'-byes')=='yes' or bargs('RD'..j..toChar(k)..'-byes')=='y' then
			byes[j][k]=true
		elseif bargs('RD'..j..'-byes')=='no' or bargs('RD'..j..'-byes')=='n' then
			byes[j][k]=false
		end
	end
end

local function getAltIndices()
	local teamindex=1
	local textindex=1
	local groupindex=1
	for j=minc,c do
		headerindex[j]=0
		for i=1,r do
			if entries[j][i]==nil and i==1 then
				headerindex[j]=headerindex[j]+1
			end
			if entries[j][i]~=nil then
				if entries[j][i]['ctype'] == 'header' then
					entries[j][i]['altindex'] = headerindex[j]
					teamindex=1
					textindex=1
					headerindex[j]=headerindex[j]+1
				elseif entries[j][i]['ctype'] == 'team' then
					entries[j][i]['altindex'] = teamindex
					teamindex=teamindex+1
				elseif entries[j][i]['ctype'] == 'text' then
					entries[j][i]['altindex'] = textindex
					textindex=textindex+1
				elseif entries[j][i]['ctype'] == 'group' then
					entries[j][i]['altindex'] = groupindex
					groupindex=groupindex+1
				elseif entries[j][i]['ctype'] == 'line' and entries[j][i]['hastext']==true then
					entries[j][i]['altindex'] = textindex
					textindex=textindex+1
				end
				entries[j][i]['headerindex'] = headerindex[j]
			end
		end
		getByes(j,headerindex)
		getHide(j,headerindex)
	end
end

local function pathCell(tbl,j,i,k,a,b,c,bg,rowspan)
	if not hascross[j] and k==2 then return end
	if pathcolor==nil then pathcolor='black' end
	local cell=tbl:tag('td')
	if rowspan~=1 then
		cell:attr('rowspan',rowspan)
	end
	if notempty(bg[k]) then
		cell:css('background',bg[k])
	end
	if a[k][1]~=0 or a[k][2]~=0 or a[k][3]~=0 or a[k][4]~=0 then
		cell:css('border','solid black')
			:css('border-width',a[k][1]..'px '..a[k][2]..'px '..a[k][3]..'px '..a[k][4]..'px')
	end
	if c[k][2]~=0 then
		cell:css('border-right',c[k][2]..'px solid '..pathcolor)
	end
	if b[k][2]~=0 then
		cell:css('box-shadow', '0px '..b[k][2]..'px 0px '..pathcolor)
	end
	if c[k][4]~=0 then
		cell:css('border-left',c[k][4]..'px solid '..pathcolor)
	end
	return cell
end

local function insertPath(tbl,j,i)
	local function createCross(angle,color,percent)
		local result = 'linear-gradient('..angle..', transparent calc('..percent..'% - 1px),'..color..' calc('..percent..'% - 1px),'..color..' calc('..percent..'% + 1px), transparent calc('..percent..'% + 1px))'
		return result
	end
	local colspan = 2
	if hascross[j] then colspan = 3 end
	
	if pathEntries['black'][j][i]=='blank' then return end
	
	if isempty(pathEntries['black'][j][i]) and isempty(pathEntries['color'][j][i]) then
		if (pathEntries['black'][j][i-1]~='blank' and notempty(pathEntries['black'][j][i-1])  and (pathEntries['black'][j][i-1]['cross'][1] == 1 or pathEntries['black'][j][i-1]['cross'][2] == 1)) or (notempty(pathEntries['color'][j][i-1]) and (pathEntries['color'][j][i-1]['cross'][1] == 1 or pathEntries['color'][j][i-1]['cross'][2] == 1)) then
			return
		else
			local cell = tbl:tag('td')
			for k=1,colspan-1 do
				cell:tag('td')
			end
			return cell
		end
	end
	
	for key,_ in pairs(pathEntries) do
		if notempty(pathEntries[key][j]) and notempty(pathEntries[key][j][i-1]) and pathEntries[key][j][i-1]~='blank' then
			if pathEntries[key][j][i-1]['cross'][1]==1 or pathEntries[key][j][i-1]['cross'][2]==1 then return end
		end
	end
	
	local a = {}
	local b = {}
	local c = {}
	local bg = {}
	local cross = {}
	local rowspan = 1
	
	for k=1,3 do
		a[k]={0,0,0,0}
		b[k]={0,0}
		c[k]={0,0,0,0}
		bg[k] = ''
		cross[k] = {}
		for n=1,2 do
			cross[k][n] = ''
		end
	end
	
	for key,_ in pairs(pathEntries) do
		local color
		if key=='black' then color='black' else color=pathcolor end
		if notempty(pathEntries[key][j]) and notempty(pathEntries[key][j][i]) then
			if key=='black' then
				a[1][3] = 3*pathEntries['black'][j][i]['out'][1]
				a[2][3] = 3*pathEntries['black'][j][i]['mid'][1]
				a[3][3] = 3*pathEntries['black'][j][i]['in'][1]
				a[1][2] = 2*pathEntries['black'][j][i]['out'][2]
				a[3][4] = 2*pathEntries['black'][j][i]['in'][2]
			else
				if pathEntries['color'][j][i]['out'][3]=='below' then
					b[1][2] = 4*pathEntries['color'][j][i]['out'][1] 
				end
				if pathEntries['color'][j][i]['mid'][3]=='below' then
					b[2][2] = 4*pathEntries['color'][j][i]['mid'][1]
				end
				if pathEntries['color'][j][i]['in'][3]=='below' then
					b[3][2] = 4*pathEntries['color'][j][i]['in'][1]
				end
				c[1][2] = 2*pathEntries['color'][j][i]['out'][2]
				c[3][4] = 2*pathEntries['color'][j][i]['in'][2]
			end
			if pathEntries[key][j][i]['cross'][1]==1 or pathEntries[key][j][i]['cross'][2]==1 then
				rowspan = 2
				if pathEntries[key][j][i]['cross'][1]==1 then
					cross[1][1] = createCross('65.5deg',color,100)
					cross[2][1] = createCross('to top right',color,50)
					cross[3][1] = createCross('245.5deg',color,100)
				end
				if pathEntries[key][j][i]['cross'][2]==1 then
					cross[1][2] = createCross('114.4deg',color,100)
					cross[2][2] = createCross('to bottom right',color,50)
					cross[3][2] = createCross('294.4deg',color,100)
				end
			end
		end
	end
	if notempty(pathEntries['color'][j]) and notempty(pathEntries['color'][j][i-1]) then
		if pathEntries['color'][j][i]['out'][3]=='above' then
			b[1][2] = -4
		end
		if pathEntries['color'][j][i]['mid'][3]=='above' then
			b[2][2] = -4
		end
		if pathEntries['color'][j][i]['in'][3]=='above' then
			b[3][2] = -4
		end
	end
	if notempty(cross[2][1]) and notempty(cross[2][2]) then
		for k=1,3 do cross[k][1] = cross[k][1]..',' end
	end
	for k=1,3 do
		bg[k] = cross[k][1]..cross[k][2]
	end
	
	for k=1,3 do
		pathCell(tbl,j,i,k,a,b,c,bg,rowspan)
	end
end

local function getPaths()
	local paths = {}
	pathEntries['black'] = {}
	pathEntries['color'] = {}
	for j=minc,c-1 do
		pathEntries['black'][j] = {}
		pathEntries['color'][j] = {}
		for i=1,r do
			pathEntries['black'][j][i] = {['out']={0,0,nil},['mid']={0,0,nil},['in']={0,0,nil},['cross']={0,0,nil}}
			pathEntries['color'][j][i] = {['out']={0,0,nil},['mid']={0,0,nil},['in']={0,0,nil},['cross']={0,0,nil}}
		end
		paths[j] = {}
		hascross[j] = false
		local crossloc = split((fargs['col'..j..'-col'..(j+1)..'-cross'] or ''):gsub("%s+", ""),{","},true)
		local str = fargs['col'..j..'-col'..(j+1)..'-paths'] or ''
		for val in str:gsub("%s+","")
					:gsub(",",", ")
					:gsub("%S+","\0%0\0")
					:gsub("%b()", function(s) return s:gsub("%z","") end)
					:gmatch("%z(.-)%z") do
			local result = split(val:gsub("%s+",""):gsub("%)",""):gsub("%(",""),{"-"})
			for k,_ in pairs(result) do
				result[k] = split(result[k],{","})
			end
			if notempty(result[2]) then
				for m=1,#result[2] do
					result[3] = {}
					result[2][m] = split(result[2][m],{":"})
					result[3][m] = result[2][m][2]
					result[2][m] = result[2][m][1]
				end
				for n=1,#result[1] do
					for m=1,#result[2] do
						table.insert(paths[j],{tonumber(result[1][n]),tonumber(result[2][m]),['color']=result[3][m]})
					end
				end
			end
		end
		if shift[j]~=0 and notempty(crossloc[1]) then
			for n=1,#crossloc do
				crossloc[n] = crossloc[n]+shift[j]
			end
		end
		for k,v in ipairs(paths[j]) do
			local color
			local hidepath = false
			if shift[j]~=0 then
				paths[j][k][1] = paths[j][k][1]+shift[j]
			end
			if shift[j+1]~=0 then
				paths[j][k][2] = paths[j][k][2]+shift[j+1]
			end
			local start = 2*paths[j][k][1]+(teams_per_match[j]-2)
			local mid = {}
			if notempty(crossloc[1]) then
				for n=1,#crossloc do
					mid[n] = 2*crossloc[n]+(teams_per_match[j]-2)
				end
			else
				mid[1]=0
			end
			local stop = 2*paths[j][k][2]+(teams_per_match[j+1]-2)
			if paths[j][k]['color']~=nil then 
				pathcolor = paths[j][k]['color']
				color = 'color'
			else
				color = 'black'
			end
			if notempty(entries[j][start-1]) and (byes[j][entries[j][start-1]['headerindex']] and isBlankEntry(j,start-1) and isBlankEntry(j,start+1) or hide[j][entries[j][start-1]['headerindex']]) then
				if bargs('show-bye-paths')~='y' and bargs('show-bye-paths')~='yes' then
					hidepath=true
				end
			end
			if notempty(entries[j+1][stop-1]) and (byes[j+1][entries[j+1][stop-1]['headerindex']] and isBlankEntry(j+1,stop-1) and isBlankEntry(j+1,stop+1) or hide[j+1][entries[j+1][stop-1]['headerindex']])then
				if bargs('show-bye-paths')~='y' and bargs('show-bye-paths')~='yes' then
					hidepath=true
				end
			end
			if bargs('RD'..j..'-RD'..(j+1)..'-path')=='n' or bargs('RD'..j..'-RD'..(j+1)..'-path')=='no' or bargs('RD'..j..'-RD'..(j+1)..'-path')=='0' then
				if notempty(entries[j][start-1]) and entries[j][start-1]['headerindex']==1 then
					hidepath=true
				end
			end
			
			local cross = 0
			for n=1,#mid do
				if (start<stop and mid[n]<stop and mid[n]>start) or (start>stop and mid[n]>stop and mid[n]<start) then
					hascross[j]=true
					cross = mid[n]
				end
			end
			if not hidepath then
				if start==stop then
					if start>r then break end
					start = math.min(start,r)
					pathEntries[color][j][start]['out'][1] = 1
					pathEntries[color][j][start]['in'][1] = 1
					if cross==0 then
						pathEntries[color][j][start]['mid'][1] = 1
					end
				elseif start<stop then
					if stop>r then break end
					pathEntries[color][j][start]['out'][1] = 1
					pathEntries[color][j][stop]['in'][1] = 1
					pathEntries[color][j][stop]['in'][2] = 1
					if color~='black' then
						pathEntries[color][j][start]['out'][3] = 'below'
						pathEntries[color][j][stop+1]['in'][3] = 'above'
					end
					if cross==0 then
						pathEntries[color][j][start]['mid'][1] = 1
						pathEntries[color][j][start]['mid'][3] = 'below'
						for i=start+1,stop-1 do pathEntries[color][j][i]['in'][2] = 1 end
					else
						pathEntries[color][j][cross]['cross'][1] = 1
						for i=start+1,cross-1 do pathEntries[color][j][i]['out'][2] = 1 end
						for i=cross+2,stop-1 do pathEntries[color][j][i]['in'][2] = 1 end
					end
				elseif start>stop then
					if start>r then break end
					pathEntries[color][j][stop]['in'][1] = 1
					if cross==0 then
						for i=stop+1,start-1 do pathEntries[color][j][i]['in'][2] = 1 end
						pathEntries[color][j][start]['out'][1] = 1
						pathEntries[color][j][start]['mid'][1] = 1
						pathEntries[color][j][start]['in'][2] = 1
						if color~='black' then
							pathEntries[color][j][start+1]['out'][3] = 'above'
							pathEntries[color][j][start+1]['mid'][3] = 'above'
							pathEntries[color][j][stop]['in'][3] = 'below'
						end
					else
						pathEntries[color][j][cross]['cross'][2] = 1
						for i=stop+1,cross-1 do pathEntries[color][j][i]['in'][2] = 1 end
						for i=cross+2,start-1 do pathEntries[color][j][i]['out'][2] = 1 end
						pathEntries[color][j][start]['out'][1] = 1
						pathEntries[color][j][start]['out'][2] = 1
						if color~='black' then
							pathEntries[color][j][start+1]['out'][3] = 'above'
							pathEntries[color][j][stop]['in'][3] = 'below'
						end
					end
				end
			end
		end
	end
	for j=minc,c-1 do
		for i=1,r do
			local empty = true
			for key,_ in pairs(pathEntries) do
				for k,v in pairs(pathEntries[key][j][i]) do
					if v[1]~=0 or v[2]~=0 or v[3]~=nil then
						empty = false
					end
				end
				if empty then pathEntries[key][j][i] = nil end
			end
		end
	end
	for j=minc,c-1 do
		if notempty(pathEntries['black'][j]) and notempty(pathEntries['black'][j+1]) then
			for i=1,r do
				if (entries[j+1][i-1]==nil or (byes[j+1][entries[j+1][i-1]['headerindex']]) and isBlankEntry(j+1,i-1)) and notempty(pathEntries['black'][j][i]) and notempty(pathEntries['black'][j+1][i]) then
					if pathEntries['black'][j][i]['in'][1]==1 and pathEntries['black'][j+1][i]['out'][1]==1 then
						entries[j+1][i-1]={['ctype']='line'}
						entries[j+1][i]={['ctype']='blank'}
					end
				end
			end
		end
	end
end

local function getGroups()
	local function check(j,i)
		local result=false
		if entries[j][i] == nil then
			if entries[j][i+1] == nil then 
				result=true 
			elseif entries[j][i+1]['ctype']=='text' and isBlankEntry(j,i+1) then
				result=true
			end
		elseif entries[j][i]['ctype']=='text' and isBlankEntry(j,i) then
			result=true
		end
		return result
	end
	for j=minc,c-1 do
		if teams_per_match[j]==2 then
			local n=0
			for i=1,r do
				if (notempty(pathEntries['black'][j][i]) and pathEntries['black'][j][i]['in'][1] == 1) or (notempty(pathEntries['color'][j][i]) and pathEntries['color'][j][i]['in'][1] == 1) then
					n=n+1
					if check(j,i) then
						local k=minc-1
						repeat
							if entries[j-k][i+1]~=nil and entries[j-k][i+1]['ctype']=='text' and isBlankEntry(j-k,i+1) then
								entries[j-k][i+2]=nil
							end
							entries[j-k][i]={['ctype']='blank'}
							entries[j-k][i+1]={['ctype']='blank'}
							if k>0 and isempty(pathEntries['black'][j-k][i]) and isempty(pathEntries['color'][j-k][i]) then
								pathEntries['black'][j-k][i] = 'blank'
								pathEntries['black'][j-k][i+1] = 'blank'
							end
							k=k+1
						until k>j-1 or not check(j-k,i) or notempty(pathEntries['black'][j-k][i]) or notempty(pathEntries['color'][j-k][i])
						k=k-1
						entries[j-k][i]={['ctype']='group',['index']=n,['colspan']=k+1}
						entries[j-k][i+1]={['ctype']='blank'}
						entries[j-k][i]['group'] = bargs('RD'..j..'-group'..n)
					end
				end
			end
		end
	end
end

local function getCells()
	local maxrow = 1
	local colentry = {}
	local bool = true
	for j=minc,c do
		if notempty(fargs['col'..j..'-headers']) then bool=false end
		teams_per_match[j] = tonumber(fargs['RD'..j..'-teams-per-match']) or tonumber(fargs['col'..j..'-teams-per-match']) or tonumber(fargs['teams-per-match']) or 2
		maxtpm = math.max(maxtpm,teams_per_match[j])
	end
	for j=minc,c do
		entries[j] = {}
		shift[j] = tonumber(bargs('RD'..j..'-shift')) or tonumber(bargs('shift')) or 0
		colentry[j] = {
			split((fargs['col'..j..'-headers'] or ''):gsub("%s+", ""),{","},true),
			split((fargs['col'..j..'-matches'] or ''):gsub("%s+", ""),{","},true),
			split((fargs['col'..j..'-lines'] or ''):gsub("%s+", ""),{","},true),
			split((fargs['col'..j..'-text'] or ''):gsub("%s+", ""),{","},true),
		}
		if bool==true and fargs['noheaders']~='y' and fargs['noheaders']~='yes' then
			table.insert(colentry[j][1],1)
		end
	end

	for j=minc,c do
		local textindex=0
		for k,v in ipairs(colentry[j]) do
			table.sort(colentry[j][k])
			local ctype
			if k==1 then ctype='header'
			elseif k==2 then ctype='team'
			elseif k==3 then ctype='line'
			elseif k==4 then ctype='text'
			elseif k==5 then ctype='group'
			end
			for n=1,#colentry[j][k] do
				if shift[j]~=0 and colentry[j][k][n]>1 then
					colentry[j][k][n] = colentry[j][k][n]+shift[j]
				end
				local i=2*colentry[j][k][n]-1
				maxrow = math.max(i+2*teams_per_match[j]-1,maxrow)
				if ctype=='team' then
					if entries[j][i-1]==nil and entries[j][i-2]==nil then
						entries[j][i-2]={['ctype']='text',['index']=n}
						entries[j][i-1]={['ctype']='blank'}
						textindex=n
					end
					entries[j][i]={['ctype']=ctype,['index']=teams_per_match[j]*n-(teams_per_match[j]-1),['position']='top'}
					entries[j][i+1]={['ctype']='blank'}
					for m=2,teams_per_match[j] do
						entries[j][i+2*(m-1)]={['ctype']=ctype,['index']=teams_per_match[j]*n-(teams_per_match[j]-m)}
						entries[j][i+2*(m-1)+1]={['ctype']='blank'}
					end
				elseif ctype=='text' then
					entries[j][i]={['ctype']=ctype,['index']=textindex+n}
					entries[j][i+1]={['ctype']='blank'}
				elseif ctype=='line' then
					entries[j][i]={['ctype']=ctype}
					entries[j][i+1]={['ctype']='blank'}
				elseif ctype=='group' then
					entries[j][i]={['ctype']=ctype,['index']=n}
					entries[j][i+1]={['ctype']='blank'}
				else
					entries[j][i]={['ctype']=ctype,['index']=n,['position']='top'}
					entries[j][i+1]={['ctype']='blank'}
				end
			end
		end
	end
	if isempty(r) then
		r = maxrow
	end
end

function p.main(frame)
	fargs = frame.args
	pargs = frame:getParent().args;
	
	r = tonumber(fargs.rows) or ''
	c = tonumber(fargs.rounds) or 1
	maxc = tonumber(pargs.maxrounds) or tonumber(pargs.maxround) or ''
	minc = tonumber(pargs.minround) or 1
	headerindex = {}
	if notempty(maxc) then c=maxc end
	if fargs.autocol=='yes' or fargs.autocol=='y' then autocol=true end
	local colspacing = tonumber(fargs['col-spacing']) or 5
	
	maxtpm = 1
	seeds = true
	forceseeds = false
	boldwinner = bargs('boldwinner') or ''
	if bargs('seeds')=='y' or bargs('seeds')=='yes' then forceseeds=true end
	if bargs('seeds')=='n' or bargs('seeds')=='no' then seeds=false end
	if bargs('aggregate')=='y' or bargs('aggregate')=='yes' then aggregate=true end
	if bargs('autolegs')=='y' or bargs('autolegs')=='yes' then autolegs=true end
	if bargs('nowrap')=='y' or bargs('nowrap')=='yes' then nowrap=true end
	if bargs('paramstyle')=='numbered' then 
		paramstyle = 'numbered'
	else
		paramstyle = 'indexed'
	end
	
	getCells()
	getAltIndices()
	assignParams()
	matchGroups()
	if (boldwinner=='yes' or boldwinner=='y' or boldwinner=='high') then boldWinner() end
	getPaths()
	if minc==1 then
	getGroups()
	end
	
	for j=minc,c do
		maxlegs[j] = rlegs[j]
		for i=1,r do
			if notempty(entries[j][i]) then
				if notempty(entries[j][i]['legs']) then
					maxlegs[j] = math.max(rlegs[j],entries[j][i]['legs'])
				end
				if autolegs then
					local l=1
					repeat l=l+1
					until isempty(entries[j][i]['score']) or isempty(entries[j][i]['score'][l])
					maxlegs[j] = math.max(maxlegs[j],l-1)
				end
			end
		end
	end
	
	local tbl = mw.html.create('table')
			:attr('cellpadding','0')
			:attr('cellspacing','0')
			:css('font-size','90%')
			:css('border-collapse','collapse')
			:css('margin','1em 2em 1em 1em')
	
	tbl:tag('tr'):css('visibility','collapse')
	tbl:tag('td'):css('width','1px')
	for j=minc,c do
		if seeds then
			tbl:tag('td'):css('width',getWidth('seed','25px'))
		end
		tbl:tag('td'):css('width',getWidth('team','150px'))
		if maxlegs[j]==0 then
			tbl:tag('td'):css('width',getWidth('score','25px'))
			else
			for l=1,maxlegs[j] do
				tbl:tag('td'):css('width',getWidth('score','25px'))
			end
		end
		if aggregate and maxlegs[j]>1 then
			tbl:tag('td'):css('width',getWidth('score','25px'))
		end
		if j~=c then
			if hascross[j] then
				tbl:tag('td'):css('width',colspacing..'px')
				tbl:tag('td'):css('width','10px')
				tbl:tag('td'):css('width',colspacing..'px')
			else
				tbl:tag('td'):css('width',colspacing..'px')
				tbl:tag('td'):css('width',colspacing..'px')
			end
		end
	end
	
	for i=1,r do
		local row = tbl:tag('tr')
		row:tag('td'):css('height','11px')
		for j=minc,c do
			insertEntry(row,j,i)
			if j~=c then
				insertPath(row,j,i)
			end
		end
	end
			
	return tostring(tbl)
end

return p
"https://ta.wikipedia.org/w/index.php?title=Module:Build_bracket&oldid=3625632" இலிருந்து மீள்விக்கப்பட்டது