class CFPropertyList::List

def save(file=nil,format=nil,opts={})

format = nil:: The format to save in. Uses +format+ instance variable if nil
file = nil:: The filename of the file to write to. Uses +filename+ instance variable if nil
Serialize CFPropertyList object to specified format and write it to file 
def save(file=nil,format=nil,opts={})
  format = @format if format.nil?
  file = @filename if file.nil?
  if format != FORMAT_BINARY && format != FORMAT_XML && format != FORMAT_PLAIN
    raise CFFormatError.new("Format #{format} not supported, use List::FORMAT_BINARY or List::FORMAT_XML")
  end
  if(!File.exist?(file)) then
    raise IOError.new("File #{file} not writable!") unless File.writable?(File.dirname(file))
  elsif(!File.writable?(file)) then
    raise IOError.new("File #{file} not writable!")
  end
  opts[:root] = @value
  opts[:formatted] = @formatted unless opts.has_key?(:formatted)
  prsr = @@parsers[format-1].new
  content = prsr.to_str(opts)
  File.open(file, 'wb') {
    |fd|
    fd.write content
  }
end