+#
+# convert_base.rb
+#
module Puppet::Parser::Functions
-
- newfunction(:convert_base, :type => :rvalue, :arity => 2, :doc => <<-'ENDHEREDOC') do |args|
-
+ 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"
- ENDHEREDOC
+ Note: Since Puppet 4.5.0 this can be done with String.new() and its many formatting options:
+
+ $binary_repr = String(5, '%b') # results in "101"
+ $hex_repr = String(254, "%x") # results in "fe"
+ $hex_repr = String(254, "%#x") # results in "0xfe"
+ DOC
- raise Puppet::ParseError, ("convert_base(): First argument must be either a string or an integer") unless (args[0].is_a?(Integer) or args[0].is_a?(String))
- raise Puppet::ParseError, ("convert_base(): Second argument must be either a string or an integer") unless (args[1].is_a?(Integer) or args[1].is_a?(String))
+ raise Puppet::ParseError, 'convert_base(): First argument must be either a string or an integer' unless args[0].is_a?(Integer) || args[0].is_a?(String)
+ raise Puppet::ParseError, 'convert_base(): Second argument must be either a string or an integer' unless args[1].is_a?(Integer) || args[1].is_a?(String)
if args[0].is_a?(String)
- raise Puppet::ParseError, ("convert_base(): First argument must be an integer or a string corresponding to an integer in base 10") unless args[0] =~ /^[0-9]+$/
+ 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]+$}
end
if args[1].is_a?(String)
- raise Puppet::ParseError, ("convert_base(): First argument must be an integer or a string corresponding to an integer in base 10") unless args[1] =~ /^[0-9]+$/
+ 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()
+ 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 and new_base <= 36
+ 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