Documentation for this module may be created at Module:Paramtest/doc
--
-- Tests basic properties of parameters
--
local p = {}
--
-- Tests if the parameter is empty, all white space, or undefined
--
function p.is_empty( arg )
if not arg or not arg:find('%S') then
return true
end
return false
end
--
-- Tests if the parameter has content
-- The same as !is_empty, but this is more readily clear
--
function p.has_content( arg )
if not arg or not arg:find('%S') then
return false
end
return true
end
--
-- Tests if the parameter has been defined (regardless of content)
--
function p.is_defined( arg )
if not arg then
return false
else
return true
end
end
--
-- Removes leading and trailing whitespace from the parameter
-- Which is unfortunately not removed when passed through invoke
--
function p.trim( arg )
return string.gsub( arg, '^%s*(%S+)%s*$', '%1')
end
--
-- uppercases first letter
--
function p.ucfirst( arg )
if not arg or arg:len() == 0 then
return nil
elseif arg:len() == 1 then
return arg:upper()
else
return arg:sub(1,1):upper() .. arg:sub(2)
end
end
--
-- uppercases first letter, lowercases everything else
--
function p.ucflc( arg )
if not arg or arg:len() == 0 then
return nil
elseif arg:len() == 1 then
return arg:upper()
else
return arg:sub(1,1):upper() .. arg:sub(2):lower()
end
end
return p