37 lines
910 B
Ruby
37 lines
910 B
Ruby
#
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# abs.rb
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#
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module Puppet::Parser::Functions
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newfunction(:abs, :type => :rvalue, :doc => <<-EOS
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Returns the absolute value of a number, for example -34.56 becomes
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34.56. Takes a single integer and float value as an argument.
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EOS
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) do |arguments|
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raise(Puppet::ParseError, "abs(): Wrong number of arguments " +
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"given (#{arguments.size} for 1)") if arguments.size < 1
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value = arguments[0]
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# Numbers in Puppet are often string-encoded which is troublesome ...
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if value.is_a?(String)
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if value.match(/^-?(?:\d+)(?:\.\d+){1}$/)
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value = value.to_f
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elsif value.match(/^-?\d+$/)
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value = value.to_i
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else
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raise(Puppet::ParseError, 'abs(): Requires float or ' +
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'integer to work with')
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end
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end
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# We have numeric value to handle ...
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result = value.abs
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return result
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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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