Puppet Function: join

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

Overview

join() ⇒ Any

This function joins an array into a string using a separator.

Examples:

join(['a','b','c'], ",")

Would result in: “a,b,c”

Returns:

  • (Any) 


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# File 'puppet/modules/stdlib/lib/puppet/parser/functions/join.rb', line 6

newfunction(:join, :type => :rvalue, :doc => <<-EOS
This function joins an array into a string using a separator.

*Examples:*

  join(['a','b','c'], ",")

Would result in: "a,b,c"
  EOS
) do |arguments|

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

  array = arguments[0]

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

  suffix = arguments[1] if arguments[1]

  if suffix
    unless suffix.is_a?(String)
      raise(Puppet::ParseError, 'join(): Requires string to work with')
    end
  end

  result = suffix ? array.join(suffix) : array.join

  return result
end