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 we sometimes want to either preserve or remove that whitespace depending on the application. 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