Module:CountryData/sandbox

local p = {} local mostUsed = mw.loadData('Module:CountryData/summary')

local function getcontents(frame,country,params) return frame:expandTemplate({title="Country data "..country;args=params}) end

function p.getcachedtable(frame, country, params) country = mostUsed.redirects[country] or country if params and next(params) then return p.gettable(frame, country, params) end -- Uses mw.loadData to cache data for the most-used templates if mostUsed.pages[country] then local cache = mw.loadData('Module:CountryData/cache' .. mostUsed.pages[country]) if cache.data[country] then return cache.data[country] end end -- if not in cache return p.gettable(frame, country, params) end

function p.gettable(frame,country,params) --Returns the parameters of a country data template as a Lua table --If not a valid data template, return empty table local bool, s = pcall(getcontents,frame,country,params or {}) if bool and (string.find(s,"^%{%{ *%{%{%{1") or string.find(s,"^%{%{safesubst: *%{%{%{1")) then --Replace parameter delimiters with arbitrary control characters --to avoid clashes if param values contain equals/pipe signs s = string.gsub(s,"|([^|=]-)=","\1\1%1\2") s = string.gsub(s,"}}%s*$","\1") --Loop over string and add params to table local part = {} for par in string.gmatch(s,"\1[^\1\2]-\2[^\1\2]-\1") do     local k = string.match(par,"\1%s*(.-)%s*\2") local v = string.match(par,"\2%s*(.-)%s*\1") if v and not (v=="" and string.find(k,"^flag alias")) then part[k] = v     end end return part else return {} end end

function p.getalias(frame) --Returns a single parameter value from a data template local part = p.gettable(frame,frame.args[1]) if frame.args.variant then return tostring(part[frame.args[2].."-"..frame.args.variant]                        or part[frame.args[2]] or frame.args.def) else return tostring(part[frame.args[2]] or frame.args.def) end end

function p.gettemplate(frame) --For testing, recreates the country data from the created Lua table --Get data table local data = p.gettable(frame,frame.args[1]) --Concatenate fields into a template-like string local out = "" end

return p