tarfile.py 文件源码

def _apply_pax_info(self, pax_headers, encoding, errors):
        """Replace fields with supplemental information from a previous
           pax extended or global header.
        """
        for keyword, value in pax_headers.iteritems():
            if keyword not in PAX_FIELDS:
                continue

            if keyword == "path":
                value = value.rstrip("/")

            if keyword in PAX_NUMBER_FIELDS:
                try:
                    value = PAX_NUMBER_FIELDS[keyword](value)
                except ValueError:
                    value = 0
            else:
                value = uts(value, encoding, errors)

            setattr(self, keyword, value)

        self.pax_headers = pax_headers.copy()