'Process a GNU tar extended sparse header, version 0.0.'

def _proc_gnusparse_00(self, next, pax_headers, buf):

    offsets = []
    for match in re.finditer('\\d+    GNU.sparse.offset=(\\d+)\\n', buf):
        offsets.append(int(match.group(1)))
    numbytes = []
    for match in re.finditer('\\d+    GNU.sparse.numbytes=(\\d+)\\n', buf):
        numbytes.append(int(match.group(1)))
    next.sparse = list(zip(offsets, numbytes))
