local p = {}  function p.main(frame)   --Get input arguments  local args = require('มอดูล:Arguments').getArgs(frame,{valueFunc =  function(key,value)  if value then  value = mw.text.trim(value)  --Change empty string to nil for all args except 'image' and 'border'  if key=="image" or key=="border" or value~="" then  return value  end  end  return nil  end  })   --Call main function  return p.luaMain(frame,args)  end  function p.luaMain(frame,args)   local function emp2nil(x)  if x=="" then return nil else return x end  end  local function space2emp(x)  if string.find(x,"^%s*$") then return "" else return x end  end  local function nopx(x)  if x~=nil and (string.find(x,"^%d+$") or string.find(x,"^%d+px$")) then return string.gsub(x,"^(.*)px","%1") else return nil end  end   --Country & mode parameters  local mode = string.lower(args[1] or "usc")  local mi = string.sub(mode,1,1)  local ms = string.sub(mode,2,2)  local mn = string.sub(mode,3,3)  local me = string.sub(mode,4,-1)   local country = args[2] or ""  local avar = args["avar"] or args["altvar"]  local clink = args["clink"] or args["link"]   --Get country data & altvar data  local data, alink, amap, asuf  if avar then  local age = args["age"] or ""  local aalias  amap, aalias = require("มอดูล:Flagg/Altvar data").alttable(age)  avar = string.gsub(string.lower(avar or ""),"[ \-]","")  avar = aalias[avar] or avar  if not amap[avar] then error("Unknown avar") end  local apar = {altvar=amap[avar].altvar;mw=amap[avar].mw;age=amap[avar].age;variant=args["variant"] or args[3]}  data = require("มอดูล:CountryData").gettable(frame,country,apar)  apref = amap[avar].altlink  asuf = amap[avar].age or ""  alink = data["link alias-"..amap[avar].altvar] or apref..(clink or data["shortname alias"] or data.alias or country)..asuf  else  data = (args["nodata"] and {}) or require("มอดูล:CountryData").gettable(frame,country,{variant=args["variant"] or args[3]})  avar = ""  amap = {[""]={altvar=""}}  end   --Name and link parameters  clink = clink or data.alias or country   local pref = args["pref"]  local suff = args["suff"] or asuf  if not pref and not suff then --Default prefix  pref = "ธงชาติ"  end  local yn_map = {[""]=0; ["0"]=0; ["no"]=0; ["n"]=0; ["1"]=1; ["yes"]=1; ["y"]=1}  local fthe = (args["pthe"] and yn_map[args["pthe"]]~=0) or (args["the"] and yn_map[args["the"]]~=0)  local nthe = (args["nthe"] and yn_map[args["nthe"]]~=0) or (args["the"] and yn_map[args["the"]]~=0)  fthe = fthe and (pref and "t" or "T").."he " or ""  nthe = nthe and (pref and "t" or "T").."he " or ""  local flink = args["plink"] or args["flink"] or alink  or clink=="" and "" or space2emp((pref or "").."")..fthe..clink..space2emp(""..(suff or ""))  local fsec = args["psection"] or args["section"]  local csec = args["csection"] or args["section"]  fsec = fsec and "#"..fsec or ""  csec = csec and "#"..csec or ""   if string.find(me,"f") then  if mw.title.new( flink ).exists == false then  flink = clink  end  end   local name = args["name"]  if not name then  local cname = string.find(me,"e") and (data["name alias-"..amap[avar].altvar] or data["shortname alias"] or data.alias) or country  if mn == "f" then  name = cname=="" and "" or space2emp((pref or "").."")..nthe..cname..space2emp(""..(suff or ""))  else  name = cname  end  end   --Image parameters  local pimage = args["image"]  local placeholder = "Flag placeholder.svg"  local variant = args["variant"] or args[3] or ""  local image_map = {[""]=placeholder; ["none"]=placeholder; ["blank"]=placeholder}  if pimage then --Remove namespace  pimage = string.gsub(pimage,"^[Ff][Ii][Ll][Ee]:","")  pimage = string.gsub(pimage,"^[Ii][Mm][Aa][Gg][Ee]:","")  end  local iname = image_map[pimage] or pimage   local size = args["size"] or args["sz"]  local size_map = {xs="12x8px"; s="17x11px"; m="23x15px"; l="32x21px"; xl="46x30px"}  if size==nil or string.find(size,"^%d*x?%d+px$") then  --valid EIS size (..px, x..px or ..x..px) or unset  elseif string.find(size,"^%d*x?%d+$") then --EIS size without "px" suffix  size=size.."px"  else --size from map, or invalid value  size = size_map[size] or nil  end  local border = args["border"]   if iname then  size = size or "23x15px"  if yn_map[border]==0 then border = "" else border = "|border" end  else  iname = data["flag alias-"..amap[avar].altvar.."-"..variant] or data["flag alias-"..variant] or data["flag alias-"..amap[avar].altvar] or data["flag alias"] or placeholder  size = size or emp2nil(data.size) or "23x15px"  if border then  if yn_map[border]==0 then border = "" else border = "|border" end  else  local autoborder = data["border-"..variant] or data["border-"..amap[avar].altvar] or data.border  if autoborder and autoborder~="border" then border = "" else border = "|border" end  end  end   local am = ""  if args["alt"] or string.find(me,"a") then  am = args["alt"] or args["name"] or country  am = am.."|"..am  end   --Build display name  local text = args["text"]  if not text then  if mn=="x" then --no text  text = ""  elseif mn=="p" or mn=="f" then --prefix/suffix link  text = flink=="" and name or "[["..flink..fsec.."|"..name.."]]"  elseif mn=="b" then --both prefix/suffix and normal country link  local preflink = pref and (flink=="" and pref.."" or "[["..flink..fsec.."|"..pref.."]]") or ""  local sufflink = suff and (flink=="" and ""..suff or "[["..flink..fsec.."|"..suff.."]]") or ""  local namelink = (name=="" and "" or nthe)..(clink=="" and name or "[["..clink..csec.."|"..name.."]]")  text = preflink..namelink..sufflink  elseif mn=="d" then --data template  local title = mw.title.new("Template:Country data "..country)  --check if redirect  if title.isRedirect then  text = "<span class=\"plainlinks\">["..title:fullUrl("redirect=no").." "..name.."]</span>"  else  text = "[["..title.fullText.."|"..name.."]]"  end  elseif mn=="u" then --unlinked  text = name  else --country link (default)  text = clink=="" and name or "[["..clink..csec.."|"..name.."]]"  end  end   --Build image  local ilink = args["ilink"]  if not ilink then  if mi=="x" or (iname==placeholder and pimage~=placeholder) then --no image/invisible image  iname = placeholder  border = ""  ilink = "|link="  am = ""  elseif mi=="i" then --image page link  ilink = ""  elseif mi=="c" then --country link  ilink = "|link="..clink..(clink=="" and "" or csec)  elseif mi=="p" or mi=="f" then --prefix/suffix link  ilink = "|link="..flink..(flink=="" and "" or fsec)  elseif mi=="d" then --data template  local title = mw.title.new("Template:Country data "..country)  --check if redirect  if title.isRedirect then  ilink = "|link="..title:fullUrl("redirect=no")  else  ilink = "|link="..title.fullText  end  else --unlinked (default)  ilink = "|link="  end  end  if am == "" and string.find(me,"l") then  am = mw.ustring.sub(ilink,7,-1)  end  local image = "[[File:"..iname.."|"..size..border..ilink.."|alt="..am.."]]"   if iname==placeholder then  if require('มอดูล:yesno')(args["noredlink"]) == false then  iname = ''  image = "[[:Template:Country data "..country.."]]"  end  if (args["missingcategory"] or '') ~= '' then  image = image..args["missingcategory"]  end  if string.find(me,"b") then  text = ''  end  end   --Combine image and name with separator  local align = args["align"] or args["al"]  local nalign = args["nalign"] or args["nal"]  local align_map = {left="left", l="left", center="center", centre="center", c="center", middle="center", m="center", right="right", r="right"}  local out  if string.find(me,"r") then  --image right of name  if (ms=="x" and mi=="x") or (string.find(me,"o") and iname==placeholder and pimage~=placeholder) then --name only  out = text  elseif ms=="x" then --no separator  out = text.."<span class=\"flagicon\">"..image.."</span>"  elseif ms=="n" then --non-breaking space  out = text.."<span class=\"flagicon\">&nbsp;"..image.."</span>"  elseif ms=="l" then --line break  out = text.."<span class=\"flagicon\"><br/>"..image.."</span>"  elseif ms=="t" then --table cell  out = "style=\"text-align:"..(align_map[nalign] or "left").."\"|"..text.."||style=\"text-align:"..(align_map[align] or "center")..";\"|<span class=\"flagicon\">"..image.."</span>"  else --fixed-width span box (default)  local width = args["width"] or args["w"] or require("มอดูล:Flaglist/size").luawidth(size)  out = text.."&nbsp;<span class=\"flagicon\" style=\"display:inline-block;width:"..width.."px;text-align:"..(align_map[align] or "right")..";\">"..image.."</span>"  end  else --image left of name  if (ms=="x" and mi=="x") or (string.find(me,"o") and iname==placeholder and pimage~=placeholder) then --name only  out = text  elseif ms=="x" then --no separator  out = "<span class=\"flagicon\">"..image.."</span>"..text  elseif ms=="n" then --non-breaking space  out = "<span class=\"flagicon\">"..image.."&nbsp;</span>"..text  elseif ms=="l" then --line break  out = "<span class=\"flagicon\">"..image.."<br/></span>"..text  elseif ms=="t" then --table cell  out = "style=\"text-align:"..(align_map[align] or "center")..";\"|<span class=\"flagicon\">"..image.."</span>||style=\"text-align:"..(align_map[nalign] or "left").."\"|"..text  else --fixed-width span box (default)  local width = nopx(args["width"] or args["w"]) or require("มอดูล:Flaglist/size").luawidth(size)  out = "<span class=\"flagicon\" style=\"display:inline-block;width:"..width.."px;text-align:"..(align_map[align] or "left")..";\">"..image.."</span>&nbsp;"..text  end  end  if string.find(me,"w") then --avoid wrapping  out = "<span class=\"nowrap\">"..out.."</span>"  end   --Tracking categories  local cat = ""  if pimage and not image_map[pimage] and country~="" and data["flag alias"] and not args.demo then  cat = "[[Category:Pages using Flagg with specified image instead of data template image]]"  end   return out..cat  end  return p