Puppet Function: member

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

Overview

member() ⇒ Any

This function determines if a variable is a member of an array. The variable can be a string, fixnum, or array.

Examples:

member(['a','b'], 'b')

Would return: true

member(['a', 'b', 'c'], ['a', 'b'])

would return: true

member(['a','b'], 'c')

Would return: false

member(['a', 'b', 'c'], ['d', 'b'])

would return: false

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/member.rb', line 7

newfunction(:member, :type => :rvalue, :doc => <<-DOC
  This function determines if a variable is a member of an array.
  The variable can be a string, fixnum, or array.

  *Examples:*

      member(['a','b'], 'b')

  Would return: true

      member(['a', 'b', 'c'], ['a', 'b'])

  would return: true

      member(['a','b'], 'c')

  Would return: false

      member(['a', 'b', 'c'], ['d', 'b'])

  would return: false
  DOC
           ) do |arguments|

  raise(Puppet::ParseError, "member(): Wrong number of arguments given (#{arguments.size} for 2)") if arguments.size < 2

  array = arguments[0]

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

  unless arguments[1].is_a?(String) || arguments[1].is_a?(Integer) || arguments[1].is_a?(Array)
    raise(Puppet::ParseError, 'member(): Item to search for must be a string, fixnum, or array')
  end

  item = if arguments[1].is_a?(String) || arguments[1].is_a?(Integer)
           [arguments[1]]
         else
           arguments[1]
         end

  raise(Puppet::ParseError, 'member(): You must provide item to search for within array given') if item.respond_to?('empty?') && item.empty?

  result = (item - array).empty?

  return result
end