class Nokogiri::XML::SAX::Parser

to set options on the parser context before parsing begins.
If a block is given, the underlying ParserContext object will be yielded. This can be used
[Yields]

parsing the input, or +nil+ for auto-detection. (default #encoding)
- +encoding+ (optional Encoding, String, nil) An Encoding or encoding name to use when
- +filename+ (String) The path to the file to be parsed.
[Parameters]

Parse a file.

parse_file(filename, encoding) { |parser_context| ... }
parse_file(filename) { |parser_context| ... }
:call-seq:
##

def parse_file(filename, encoding = @encoding)
  raise ArgumentError, "no filename provided" unless filename
  raise Errno::ENOENT unless File.exist?(filename)
  raise Errno::EISDIR if File.directory?(filename)
  ctx = related_class("ParserContext").file(filename, encoding)
  yield ctx if block_given?
  ctx.parse_with(self)
end