Puppet Function: suffix

Defined in:
lib/puppet/parser/functions/suffix.rb
Function type:
Ruby 3.x API

Overview

suffix() ⇒ Any

This function applies a suffix to all elements in an array, or to the keys in a hash.

Examples:

suffix(['a','b','c'], 'p')

Will return: [‘ap’,‘bp’,‘cp’]

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/suffix.rb', line 5

newfunction(:suffix, :type => :rvalue, :doc => <<-DOC
  This function applies a suffix to all elements in an array, or to the keys
  in a hash.

  *Examples:*

      suffix(['a','b','c'], 'p')

  Will return: ['ap','bp','cp']
  DOC
           ) do |arguments|

  # Technically we support two arguments but only first is mandatory ...
  raise(Puppet::ParseError, "suffix(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.empty?

  enumerable = arguments[0]

  unless enumerable.is_a?(Array) || enumerable.is_a?(Hash)
    raise Puppet::ParseError, "suffix(): expected first argument to be an Array or a Hash, got #{enumerable.inspect}"
  end

  suffix = arguments[1] if arguments[1]

  if suffix
    unless suffix.is_a? String
      raise Puppet::ParseError, "suffix(): expected second argument to be a String, got #{suffix.inspect}"
    end
  end

  result = if enumerable.is_a?(Array)
             # Turn everything into string same as join would do ...
             enumerable.map do |i|
               i = i.to_s
               suffix ? i + suffix : i
             end
           else
             Hash[enumerable.map do |k, v|
               k = k.to_s
               [suffix ? k + suffix : k, v]
             end]
           end

  return result
end