28 lines
603 B
Ruby
28 lines
603 B
Ruby
#
|
|
# empty.rb
|
|
#
|
|
|
|
module Puppet::Parser::Functions
|
|
newfunction(:empty, :type => :rvalue, :doc => <<-EOS
|
|
Returns true if the variable is empty.
|
|
EOS
|
|
) do |arguments|
|
|
|
|
raise(Puppet::ParseError, "empty(): Wrong number of arguments " +
|
|
"given (#{arguments.size} for 1)") if arguments.size < 1
|
|
|
|
value = arguments[0]
|
|
klass = value.class
|
|
|
|
unless [Array, Hash, String].include?(klass)
|
|
raise(Puppet::ParseError, 'empty(): Requires either ' +
|
|
'array, hash or string to work with')
|
|
end
|
|
|
|
result = value.empty?
|
|
|
|
return result
|
|
end
|
|
end
|
|
|
|
# vim: set ts=2 sw=2 et :
|