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#
# num2bool.rb
#
# TODO(Krzysztof Wilczynski): We probably need to approach numeric values differently ...
module Puppet::Parser::Functions
newfunction(:num2bool, :type => :rvalue, :doc => <<-EOS
This function converts a number into a true boolean. Zero becomes false. Numbers
higher then 0 become true.
EOS
) do |arguments|
raise(Puppet::ParseError, "num2bool(): Wrong number of arguments " +
"given (#{arguments.size} for 1)") if arguments.size < 1
number = arguments[0]
# Only numbers allowed ...
unless number.match(/^\-?\d+$/)
raise(Puppet::ParseError, 'num2bool(): Requires integer to work with')
end
result = case number
when /^0$/
false
when /^\-?\d+$/
# Numbers in Puppet are often string-encoded which is troublesome ...
number = number.to_i
# We yield true for any positive number and false otherwise ...
number > 0 ? true : false
else
raise(Puppet::ParseError, 'num2bool(): Unknown numeric format given')
end
return result
end
end
# vim: set ts=2 sw=2 et :
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