spinu12 / modules / stdlib / lib / puppet / parser / functions / hash.rb

# hash.rb

module Puppet::Parser::Functions
  newfunction(:hash, :type => :rvalue, :doc => <<-EOS
This function converts and array into a hash.



Would return: {'a'=>1,'b'=>2,'c'=>3}
  ) do |arguments|

    raise(Puppet::ParseError, "hash(): Wrong number of arguments " +
      "given (#{arguments.size} for 1)") if arguments.size < 1

    array = arguments[0]

    unless array.is_a?(Array)
      raise(Puppet::ParseError, 'hash(): Requires array to work with')

    result = {}

      # This is to make it compatible with older version of Ruby ...
      array  = array.flatten
      result = Hash[*array]
    rescue Exception
      raise(Puppet::ParseError, 'hash(): Unable to compute ' +
        'hash from array given')

    return result

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