actions.py 文件源码

def findReplaceFlags(self, tokens):
    """Map letters in |tokens| to re flags."""
    flags = re.MULTILINE
    if 'i' in tokens:
      flags |= re.IGNORECASE
    if 'l' in tokens:
      # Affects \w, \W, \b, \B.
      flags |= re.LOCALE
    if 'm' in tokens:
      # Affects ^, $.
      flags |= re.MULTILINE
    if 's' in tokens:
      # Affects ..
      flags |= re.DOTALL
    if 'x' in tokens:
      # Affects whitespace and # comments.
      flags |= re.VERBOSE
    if 'u' in tokens:
      # Affects \w, \W, \b, \B.
      flags |= re.UNICODE
    if 0:
      tokens = re.sub('[ilmsxu]', '', tokens)
      if len(tokens):
        self.setMessage('unknown regex flags '+tokens)
    return flags