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