module CodeRay

def encode_file filename, format, options = {}

page = CodeRay.encode_file 'some_c_code.c', :html
require 'coderay'
Example:

Notice that the second argument is the output +format+, not the input language.
See CodeRay.scan_file.

Encodes +filename+ (a path to a code file) with the Scanner for +lang+. 
def encode_file filename, format, options = {}
  tokens = scan_file filename, :auto, get_scanner_options(options)
  encode_tokens tokens, format, options
end