Puppet Function: fragmenthash2yaml

Defined in:
lib/puppet/parser/functions/fragmenthash2yaml.rb
Function type:
Ruby 3.x API

Overview

fragmenthash2yaml() ⇒ Any

This converts a puppet hash to YAML string for a concat fragment.

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/fragmenthash2yaml.rb', line 2

newfunction(:fragmenthash2yaml, :type => :rvalue, :doc => <<-EOS
This converts a puppet hash to YAML string for a concat fragment.
  EOS
) do |arguments|
  require 'yaml'

  if arguments.size != 1
    raise(Puppet::ParseError, 'fragmenthash2yaml(): requires one and only one argument')
  end
  unless arguments[0].is_a?(Hash)
    raise(Puppet::ParseError, 'fragmenthash2yaml(): requires a hash as argument')
  end

  h = arguments[0]
  # https://github.com/hallettj/zaml/issues/3
  # https://tickets.puppetlabs.com/browse/PUP-3120
  # https://tickets.puppetlabs.com/browse/PUP-5630
  #
  # puppet 3.x uses ZAML which formats YAML output differently than puppet 4.x
  # including not ending the file with a new line
  if Puppet.version.to_f < 4.0
    return h.to_yaml.gsub(/---\n/, '') << "\n"
  else
    return h.to_yaml.gsub(/---\n/, '')
  end
end