def compile_file(self,filename,*args,**options):
''' Compile a file on disk to CSS. '''
css_filename = args.pop(0)
result = Engine.for_file(filename,**options).render()
if css_filename:
if not options.has_key('css_filename'):
options['css_filename'] = css_filename
with open(css_filename,'w') as f:
f.write(result)
return None
else:
return result
