gistfile1.rb

Puppet::Parser::Functions::newfunction(:module_file, :type => :rvalue, :doc => "
Function module_file:
  load file from relative or absolute path, relative path will search puppet modules files directory.
") do |args|

  raise Puppet::ParseError, "module_file(): wrong number of arguments #{args.length}, expecting (filename)." if args.length != 1
  raise Puppet::ParseError, "module_file(): does not accept empty file path." unless args[0]
  file = args[0]

  begin
    # Perform relative lookup in modules/files dir.
    if file != File.expand_path(file)
      env = Puppet[:environment]
      mod_name, file = file.split(File::SEPARATOR, 2)
      mod = Puppet::Module.find(mod_name, env)
      raise Puppet::Error "module_file(): invalid module name #{mod_name}" unless mod
      path = mod.path
      file = File.join(path, "files", file)
    end 
    result = File.read(file)
  rescue Exception => e
    raise Puppet::ParseError, "module_file(): failed to read #{file}."                                                                    
  end 
end