class Nokogiri::XML::SAX::Parser

def parse_file filename

Parse a file with +filename+
## 
def parse_file filename
  raise ArgumentError unless filename
  raise Errno::ENOENT unless File.exists?(filename)
  raise Errno::EISDIR if File.directory?(filename)
  ctx = ParserContext.file filename
  yield ctx if block_given?
  ctx.parse_with self
end