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#
# is_function_available.rb
#
module Puppet::Parser::Functions
newfunction(:is_function_available, :type => :rvalue, :doc => <<-EOS
This function accepts a string as an argument, determines whether the
Puppet runtime has access to a function by that name. It returns a
true if the function exists, false if not.
EOS
) do |arguments|
if (arguments.size != 1) then
raise(Puppet::ParseError, "is_function_available?(): Wrong number of arguments "+
"given #{arguments.size} for 1")
end
# Only allow String types
return false unless arguments[0].is_a?(String)
function = Puppet::Parser::Functions.function(arguments[0].to_sym)
function.is_a?(String) and not function.empty?
end
end
# vim: set ts=2 sw=2 et :
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