Module:CountryData: Difference between revisions
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meta>SiBr4 (Don't pass through empty flag alias) |
meta>SiBr4 (Use pcall to have to load the data template only once instead of twice) |
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Line 1: | Line 1: | ||
local p = {} | local p = {} | ||
function getcontents(frame,country,params) | |||
return frame:expandTemplate({title="Country data "..country;args=params}) | |||
end | |||
function p.gettable(frame,country,params) | function p.gettable(frame,country,params) | ||
--Returns the parameters of a country data template as a Lua table | --Returns the parameters of a country data template as a Lua table | ||
--If not a valid data template, return empty table | --If not a valid data template, return empty table | ||
if string.find( | local bool, s = pcall(getcontents,frame,country,params or {}) | ||
if bool and string.find(s,"^%{%{ *%{%{%{1") | |||
then | then | ||
--Replace parameter delimiters with arbitrary control characters | --Replace parameter delimiters with arbitrary control characters | ||
--to avoid clashes if param values contain equals/pipe signs | --to avoid clashes if param values contain equals/pipe signs |
Revision as of 16:56, 28 March 2016
Documentation for this module may be created at Module:CountryData/doc
local p = {} function getcontents(frame,country,params) return frame:expandTemplate({title="Country data "..country;args=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") 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 = "{{ {{{1}}}" for k,v in pairs(data) do out = out.."\n| "..k.." = "..v end return out.."\n}}" end return p