Module:GetParameters

local p = {}

--Helper function that populates the argument list given that user may need to use a mix of named and unnamed parameters. This is relevant because named parameters are not identical to unnamed parameters due to string trimming, and when dealing with strings function p.getParameters( frame_args, arg_list ) local new_args = {}; local index = 1; local value;

for i,arg in ipairs( arg_list ) do value = frame_args[arg] if value == nil then value = frame_args[index]; index = index + 1; end new_args[arg] = value; end

return new_args; end

--Helper Function to interpret boolean strings function p.getBoolean( boolean_str ) local boolean_value;

if type( boolean_str ) == 'string' then boolean_str = boolean_str:lower(); if boolean_str == 'false' or boolean_str == 'no' or boolean_str == '0' or boolean_str == '' then boolean_value = false; else boolean_value = true; end elseif type( boolean_str ) == 'boolean' then boolean_value = boolean_str; else error( 'No boolean value found' ); end return boolean_value end

function p.defined(frame) local arg = mw.text.trim(frame.args[1]) --if arg == tostring(tonumber(arg)) then -- undesired result for '-0' -- arg = tonumber(arg) --end --if mw.ustring.find(arg, '^%s*-?[1-9][0-9]*%s*$') ~= nil or arg == '0' then -- arg = tonumber(arg) --end if mw.ustring.find(arg, '^-?[1-9][0-9]*$') ~= nil then arg = tonumber(arg) elseif arg == '0' then arg = 0 end return frame:getParent().args[arg] ~= nil end

return p