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# frozen_string_literal: true
#
# num2bool.rb
#
module Puppet::Parser::Functions
newfunction(:num2bool, type: :rvalue, doc: <<-DOC
@summary
This function converts a number or a string representation of a number into a
true boolean.
> *Note:* that since Puppet 5.0.0 the same can be achieved with the Puppet Type System.
See the new() function in Puppet for the many available type conversions.
@return [Boolean]
Boolean(0) # false for any zero or negative number
Boolean(1) # true for any positive number
DOC
) do |arguments|
raise(Puppet::ParseError, "num2bool(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.size != 1
number = arguments[0]
case number
when Numeric
# Yay, it's a number
when String
begin
number = Float(number)
rescue ArgumentError => e
raise(Puppet::ParseError, "num2bool(): '#{number}' does not look like a number: #{e.message}")
end
else
begin
number = number.to_s
rescue NoMethodError => e
raise(Puppet::ParseError, "num2bool(): Unable to parse argument: #{e.message}")
end
end
# Truncate Floats
number = number.to_i
# Return true for any positive number and false otherwise
return number.positive?
end
end
# vim: set ts=2 sw=2 et :
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