/test/filename_12345_010107_ABC.txt
/test/filename_12345_010207_ABC.txt
/test/filename_12345_020107_zzz.txt
/test/filename_12345_020207_zzz.txt

/test/filename_55555_010107_ABC.txt
/test/filename_55555_010207_ABC.txt
/test/filename_55555_020107_ABC.txt
/test/filename_55555_020207_zzz.txt


The xml file should be:

<pt id="12345">
	<date id="010107">
		<abc id="abc" url="abc.html"></abc>
                <zzz id=""zzz" url="zzzz.html"></zzz>
	</date>
</pt>

<pt id="55555">
	<date id="010107">
		<abc id="abc" url="abc.html"></abc>
          </date>
</pt>