4 module Puppet::Parser::Functions
5 newfunction(:convert_base, :type => :rvalue, :arity => 2, :doc => <<-'DOC') do |args|
7 Converts a given integer or base 10 string representing an integer to a
8 specified base, as a string.
11 converted value as a string
13 @example Example usage
15 convert_base(5, 2)` results in: `'101'`
16 convert_base('254', '16')` results in: `'fe'`
19 Since Puppet 4.5.0 this can be done with the built-in
20 [`String.new`](https://puppet.com/docs/puppet/latest/function.html#integer-to-string)
21 function and its many formatting options:
23 `$binary_repr = String(5, '%b')` return `"101"`
24 `$hex_repr = String(254, "%x")` return `"fe"`
25 `$hex_repr = String(254, "%#x")` return `"0xfe"`
27 @return [String] The converted value as a String
30 raise Puppet::ParseError, 'convert_base(): First argument must be either a string or an integer' unless args[0].is_a?(Integer) || args[0].is_a?(String)
31 raise Puppet::ParseError, 'convert_base(): Second argument must be either a string or an integer' unless args[1].is_a?(Integer) || args[1].is_a?(String)
33 if args[0].is_a?(String)
34 raise Puppet::ParseError, 'convert_base(): First argument must be an integer or a string corresponding to an integer in base 10' unless args[0] =~ %r{^[0-9]+$}
37 if args[1].is_a?(String)
38 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]+$}
41 number_to_convert = args[0]
44 number_to_convert = number_to_convert.to_i
45 new_base = new_base.to_i
47 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
49 return number_to_convert.to_s(new_base)