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#
# convert_base.rb
#
module Puppet::Parser::Functions
newfunction(:convert_base, :type => :rvalue, :arity => 2, :doc => <<-'DOC') do |args|
Converts a given integer or base 10 string representing an integer to a specified base, as a string.
Usage:
$binary_repr = convert_base(5, 2) # $binary_repr is now set to "101"
$hex_repr = convert_base("254", "16") # $hex_repr is now set to "fe"
DOC
raise Puppet::ParseError, 'convert_base(): First argument must be either a string or an integer' unless args[0].is_a?(Integer) || args[0].is_a?(String)
raise Puppet::ParseError, 'convert_base(): Second argument must be either a string or an integer' unless args[1].is_a?(Integer) || args[1].is_a?(String)
if args[0].is_a?(String)
raise Puppet::ParseError, 'convert_base(): First argument must be an integer or a string corresponding to an integer in base 10' unless args[0] =~ %r{^[0-9]+$}
end
if args[1].is_a?(String)
raise Puppet::ParseError, 'convert_base(): First argument must be an integer or a string corresponding to an integer in base 10' unless args[1] =~ %r{^[0-9]+$}
end
number_to_convert = args[0]
new_base = args[1]
number_to_convert = number_to_convert.to_i
new_base = new_base.to_i
raise Puppet::ParseError, 'convert_base(): base must be at least 2 and must not be greater than 36' unless new_base >= 2 && new_base <= 36
return number_to_convert.to_s(new_base)
end
end
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