_funcs = re.compile(
r'^(?:(?:(?:(?:\w+|\*) )+\*?)?((?:svn|apr)_[a-z_0-9]+)\s*\(|'
'^extern\s+(?:(?:(?:\w+ |\* ?))+\*?)?((?:svn|apr)_[a-z_0-9]+)\s*;)', re.M)

def extract_funcs(fname):
  funcs = [ ]
  for names in _funcs.findall(open(fname).read()):
    if names[0]:
      name =  names[0]
    else:
      name = names[1]

    if name not in _filter_names:
      funcs.append(name)
  return funcs