-- -- This module implements  --  local p = {}  local navbar = require('Module:Navbar')._navbar  local args = {} local origArgs local root  local function notempty( s ) return s and s:match( '%S' ) end  local function fixChildBoxes(sval, tt) 	if notempty(sval) then 		local marker = '<span class=special_infobox_marker>' 		local s = sval 		s = mw.ustring.gsub(s, '(<%s*[Tt][Rr])', marker .. '%1') 		s = mw.ustring.gsub(s, '(</[Tt][Rr]%s*>)', '%1' .. marker) 		if s:match(marker) then 			s = mw.ustring.gsub(s, marker .. '%s*' .. marker, ) 			s = mw.ustring.gsub(s, '([\r\n]|-[^\r\n]*[\r\n])%s*' .. marker, '%1') 			s = mw.ustring.gsub(s, marker .. '%s*([\r\n]|-)', '%1') 			s = mw.ustring.gsub(s, '(</[Cc][Aa][Pp][Tt][Ii][Oo][Nn]%s*>%s*)' .. marker, '%1') 			s = mw.ustring.gsub(s, '(<%s*[Tt][Aa][Bb][Ll][Ee][^<>]*>%s*)' .. marker, '%1') 			s = mw.ustring.gsub(s, '^(%{|[^\r\n]*[\r\n]%s*)' .. marker, '%1') 			s = mw.ustring.gsub(s, '([\r\n]%{|[^\r\n]*[\r\n]%s*)' .. marker, '%1') 			s = mw.ustring.gsub(s,  marker .. '(%s*</[Tt][Aa][Bb][Ll][Ee]%s*>)', '%1') 			s = mw.ustring.gsub(s,  marker .. '(%s*\n|%})', '%1')'</span>' 		end 		if s:match(marker) then 			local subcells = mw.text.split(s, marker) 			s =  			for k = 1, #subcells do 				if k == 1 then 					s = s .. subcells[k] .. '</' .. tt .. '></tr>' 				elseif k == #subcells then 					local rowstyle = ' style="display:none"' 					if notempty(subcells[k]) then rowstyle = 	end 					s = s .. '<tr' .. rowstyle ..'><' .. tt .. ' colspan=2>\n' .. subcells[k] 				elseif notempty(subcells[k]) then 					if (k % 2) == 0 then 						s = s .. subcells[k] 					else 						s = s .. '<tr><' .. tt .. ' colspan=2>\n' .. subcells[k] .. '</' .. tt .. '></tr>' 					end 				end 			end 		end 		-- the next two lines add a newline at the end of lists for the PHP parser 		-- https://en.wikipedia.org/w/index.php?title=Template_talk:Infobox_musical_artist&oldid=849054481 		-- remove when :phab:T191516 is fixed or OBE 		s = mw.ustring.gsub(s, '([\r\n][%*#;:][^\r\n]*)$', '%1\n') 		s = mw.ustring.gsub(s, '^([%*#;:][^\r\n]*)$', '%1\n') 		s = mw.ustring.gsub(s, '^([%*#;:])', '\n%1') 		s = mw.ustring.gsub(s, '^(%{%|)', '\n%1') 		return s 	else 		return sval 	end end  local function union(t1, t2)     -- Returns the union of the values of two tables, as a sequence.     local vals = {}     for k, v in pairs(t1) do         vals[v] = true     end     for k, v in pairs(t2) do         vals[v] = true     end     local ret = {}     for k, v in pairs(vals) do         table.insert(ret, k)     end     return ret end  local function getArgNums(prefix)     -- Returns a table containing the numbers of the arguments that exist     -- for the specified prefix. For example, if the prefix was 'data', and     -- 'data1', 'data2', and 'data5' exist, it would return {1, 2, 5}.     local nums = {}     for k, v in pairs(args) do         local num = tostring(k):match('^' .. prefix .. '([1-9]%d*)$')         if num then table.insert(nums, tonumber(num)) end     end     table.sort(nums)     return nums end  local function addRow(rowArgs)     -- Adds a row to the infobox, with either a header cell     -- or a label/data cell combination.     if rowArgs.header then         root             :tag('tr')                 :addClass(rowArgs.rowclass)                 :cssText(rowArgs.rowstyle)                 :attr('id', rowArgs.rowid)                 :tag('th')                     :attr('colspan', 2)                     :attr('id', rowArgs.headerid)                     :addClass(rowArgs.class)                     :addClass(args.headerclass)                     :css('text-align', 'center')                     :cssText(args.headerstyle)                     :cssText(rowArgs.rowcellstyle)                     :wikitext(fixChildBoxes(rowArgs.header, 'th'))     elseif rowArgs.data then         local row = root:tag('tr')         row:addClass(rowArgs.rowclass)         row:cssText(rowArgs.rowstyle)         row:attr('id', rowArgs.rowid)         if rowArgs.label then             row                 :tag('th')                     :attr('scope', 'row')                     :attr('id', rowArgs.labelid)                     :cssText(args.labelstyle)                     :cssText(rowArgs.rowcellstyle)                     :wikitext(rowArgs.label)                     :done()         end                  local dataCell = row:tag('td')         if not rowArgs.label then              dataCell                 :attr('colspan', 2)                 :css('text-align', 'center')          end         dataCell             :attr('id', rowArgs.dataid)             :addClass(rowArgs.class)             :cssText(rowArgs.datastyle)             :cssText(rowArgs.rowcellstyle)             :wikitext(fixChildBoxes(rowArgs.data, 'td'))     end end  local function renderTitle()     if not args.title then return end      root         :tag('caption')             :addClass(args.titleclass)             :cssText(args.titlestyle)             :wikitext(args.title) end  local function renderAboveRow()     if not args.above then return end          root         :tag('tr')             :tag('th')                 :attr('colspan', 2)                 :addClass(args.aboveclass)                 :css('text-align', 'center')                 :css('font-size', '125%')                 :css('font-weight', 'bold')                 :cssText(args.abovestyle)                 :wikitext(fixChildBoxes(args.above,'th')) end  local function renderBelowRow()     if not args.below then return end          root         :tag('tr')             :tag('td')                 :attr('colspan', '2')                 :addClass(args.belowclass)                 :css('text-align', 'center')                 :cssText(args.belowstyle)                 :wikitext(fixChildBoxes(args.below,'td')) end  local function renderSubheaders()     if args.subheader then         args.subheader1 = args.subheader     end     if args.subheaderrowclass then         args.subheaderrowclass1 = args.subheaderrowclass     end     local subheadernums = getArgNums('subheader')     for k, num in ipairs(subheadernums) do         addRow({             data = args['subheader' .. tostring(num)],             datastyle = args.subheaderstyle,             rowcellstyle = args['subheaderstyle' .. tostring(num)],             class = args.subheaderclass,             rowclass = args['subheaderrowclass' .. tostring(num)]         })     end end  local function renderImages()     if args.image then         args.image1 = args.image     end     if args.caption then         args.caption1 = args.caption     end     local imagenums = getArgNums('image')     for k, num in ipairs(imagenums) do         local caption = args['caption' .. tostring(num)]         local data = mw.html.create():wikitext(args['image' .. tostring(num)])         if caption then             data                 :tag('div')                     :cssText(args.captionstyle)                     :wikitext(caption)         end         addRow({             data = tostring(data),             datastyle = args.imagestyle,             class = args.imageclass,             rowclass = args['imagerowclass' .. tostring(num)]         })     end end  local function renderRows()     -- Gets the union of the header and data argument numbers,     -- and renders them all in order using addRow.     local rownums = union(getArgNums('header'), getArgNums('data'))     table.sort(rownums)     for k, num in ipairs(rownums) do         addRow({             header = args['header' .. tostring(num)],             label = args['label' .. tostring(num)],             data = args['data' .. tostring(num)],             datastyle = args.datastyle,             class = args['class' .. tostring(num)],             rowclass = args['rowclass' .. tostring(num)],             rowstyle = args['rowstyle' .. tostring(num)],             rowcellstyle = args['rowcellstyle' .. tostring(num)],             dataid = args['dataid' .. tostring(num)],             labelid = args['labelid' .. tostring(num)],             headerid = args['headerid' .. tostring(num)],             rowid = args['rowid' .. tostring(num)]         })     end end  local function renderNavBar()     if not args.name then return end          root         :tag('tr')             :tag('td')                 :attr('colspan', '2')                 :css('text-align', 'right')                 :wikitext(navbar{                     args.name,                     mini = 1,                 }) end  local function renderItalicTitle()     local italicTitle = args['italic title'] and mw.ustring.lower(args['italic title'])     if italicTitle ==  or italicTitle == 'force' or italicTitle == 'yes' then         root:wikitext(mw.getCurrentFrame():expandTemplate({title = 'বাঁকা শিরোনাম'}))     end end  local function renderTrackingCategories()     if args.decat ~= 'yes' then     	if args.child == 'yes' then         	if args.title then             	root:wikitext('বিষয়শ্রেণী:নিবন্ধ যেটি তথ্য সারি ছাড়া তথ্যছক টেমপ্লেট ব্যবহার করছে')         	end         elseif #(getArgNums('data')) == 0 and mw.title.getCurrentTitle().namespace == 0 then             root:wikitext('বিষয়শ্রেণী: পাতা যেটি শিরোনাম প্যারামিটারসহ এম্বেডকৃত তথ্যছক টেমপ্লেট ব্যবহার করছে')         end     end end  local function _infobox()     -- Specify the overall layout of the infobox, with special settings     -- if the infobox is used as a 'child' inside another infobox.     if args.child ~= 'yes' then         root = mw.html.create('table')                  root             :addClass((args.subbox ~= 'yes') and 'infobox' or nil)             :addClass(args.bodyclass)                          if args.subbox == 'yes' then                 root                     :css('padding', '0')                     :css('border', 'none')                     :css('margin', '-3px')                     :css('width', 'auto')                     :css('min-width', '100%')                     :css('font-size', '100%')                     :css('clear', 'none')                     :css('float', 'none')                     :css('background-color', 'transparent')             else                 root                     :css('width', '22em')             end         root             :cssText(args.bodystyle)              renderTitle()         renderAboveRow()     else         root = mw.html.create()                  root             :wikitext(args.title)     end      renderSubheaders()     renderImages()      renderRows()      renderBelowRow()       renderNavBar()     renderItalicTitle()     renderTrackingCategories()          return tostring(root) end  local function preprocessSingleArg(argName)     -- If the argument exists and isn't blank, add it to the argument table.     -- Blank arguments are treated as nil to match the behaviour of ParserFunctions.     if origArgs[argName] and origArgs[argName] ~= '' then         args[argName] = origArgs[argName]     end end  local function preprocessArgs(prefixTable, step)     -- Assign the parameters with the given prefixes to the args table, in order, in batches     -- of the step size specified. This is to prevent references etc. from appearing in the     -- wrong order. The prefixTable should be an array containing tables, each of which has     -- two possible fields, a "prefix" string and a "depend" table. The function always parses     -- parameters containing the "prefix" string, but only parses parameters in the "depend"     -- table if the prefix parameter is present and non-blank.     if type(prefixTable) ~= 'table' then         error("Non-table value detected for the prefix table", 2)     end     if type(step) ~= 'number' then         error("Invalid step value detected", 2)     end          -- Get arguments without a number suffix, and check for bad input.     for i,v in ipairs(prefixTable) do         if type(v) ~= 'table' or type(v.prefix) ~= "string" or (v.depend and type(v.depend) ~= 'table') then             error('preprocessArgs উপসর্গ টেবিলে অকার্যকর ইনপুট সনাক্ত হয়েছে', 2)         end         preprocessSingleArg(v.prefix)         -- Only parse the depend parameter if the prefix parameter is present and not blank.         if args[v.prefix] and v.depend then             for j, dependValue in ipairs(v.depend) do                 if type(dependValue) ~= 'string' then                     error('preprocessArgs-এ অকার্যকর "depend" প্যারামিটারের মান সনাক্ত হয়েছে')                 end                 preprocessSingleArg(dependValue)             end         end     end      -- Get arguments with number suffixes.     local a = 1 -- Counter variable.     local moreArgumentsExist = true     while moreArgumentsExist == true do         moreArgumentsExist = false         for i = a, a + step - 1 do             for j,v in ipairs(prefixTable) do                 local prefixArgName = v.prefix .. tostring(i)                 if origArgs[prefixArgName] then                     moreArgumentsExist = true -- Do another loop if any arguments are found, even blank ones.                     preprocessSingleArg(prefixArgName)                 end                 -- Process the depend table if the prefix argument is present and not blank, or                 -- we are processing "prefix1" and "prefix" is present and not blank, and                 -- if the depend table is present.                 if v.depend and (args[prefixArgName] or (i == 1 and args[v.prefix])) then                     for j,dependValue in ipairs(v.depend) do                         local dependArgName = dependValue .. tostring(i)                         preprocessSingleArg(dependArgName)                     end                 end             end         end         a = a + step     end end   function p.infobox(frame)     -- If called via #invoke, use the args passed into the invoking template.     -- Otherwise, for testing purposes, assume args are being passed directly in.     if frame == mw.getCurrentFrame() then         origArgs = frame:getParent().args     else         origArgs = frame     end          -- Parse the data parameters in the same order that the old  did, so that     -- references etc. will display in the expected places. Parameters that depend on     -- another parameter are only processed if that parameter is present, to avoid     -- phantom references appearing in article reference lists.     preprocessSingleArg('child')     preprocessSingleArg('bodyclass')     preprocessSingleArg('subbox')     preprocessSingleArg('bodystyle')     preprocessSingleArg('title')     preprocessSingleArg('titleclass')     preprocessSingleArg('titlestyle')     preprocessSingleArg('above')     preprocessSingleArg('aboveclass')     preprocessSingleArg('abovestyle')     preprocessArgs({         {prefix = 'subheader', depend = {'subheaderstyle', 'subheaderrowclass'}}     }, 10)     preprocessSingleArg('subheaderstyle')     preprocessSingleArg('subheaderclass')     preprocessArgs({         {prefix = 'image', depend = {'caption', 'imagerowclass'}}     }, 10)     preprocessSingleArg('captionstyle')     preprocessSingleArg('imagestyle')     preprocessSingleArg('imageclass')     preprocessArgs({         {prefix = 'header'},         {prefix = 'data', depend = {'label'}},         {prefix = 'rowclass'},         {prefix = 'rowstyle'},         {prefix = 'rowcellstyle'},         {prefix = 'class'},         {prefix = 'dataid'},         {prefix = 'labelid'},         {prefix = 'headerid'},         {prefix = 'rowid'}     }, 50)     preprocessSingleArg('headerclass')     preprocessSingleArg('headerstyle')     preprocessSingleArg('labelstyle')     preprocessSingleArg('datastyle')     preprocessSingleArg('below')     preprocessSingleArg('belowclass')     preprocessSingleArg('belowstyle')     preprocessSingleArg('name')     args['italic title'] = origArgs['italic title'] -- different behaviour if blank or absent     preprocessSingleArg('decat')       return _infobox() end   return p