gam.py 文件源码

def readFile(filename, mode=u'rU', continueOnError=False, displayError=True, encoding=None):
  try:
    if filename != u'-':
      if not encoding:
        with open(os.path.expanduser(filename), mode) as f:
          return f.read()
      with codecs.open(os.path.expanduser(filename), mode, encoding) as f:
        content = f.read()
# codecs does not strip UTF-8 BOM (ef:bb:bf) so we must
        if not content.startswith(codecs.BOM_UTF8):
          return content
        return content[3:]
    return text_type(sys.stdin.read())
  except IOError as e:
    if continueOnError:
      if displayError:
        stderrWarningMsg(e)
        setSysExitRC(FILE_ERROR_RC)
      return None
    systemErrorExit(FILE_ERROR_RC, e)
  except (LookupError, UnicodeDecodeError, UnicodeError) as e:
    Cmd.Backup()
    usageErrorExit(e)

# Write a file