[Zope] Truncating strings with DTML

[Aaron Gillette]

Hi All,

I'd like to take a string like:

	/Computers/Data_Formats/Almost_Every_File_Format_in_the_World

and cut it down to:

	/Computers/Data_Formats

using DTML.

I've tried to count to the last "/", and then truncate the string with
ljust, like so:

<dtml-let strDirPathSize="_.string.rfind(strDirPath, '/')">
<dtml-let strDirPath="_.string.ljust(strDirPath, strDirPathSize)">

However, ljust/rjust won't truncate the string.

In the case above, I know that I want to truncate the string to 23
characters (/Computers/Data_Formats). Is there a way to accomplish this
in DTML? If not, any suggestions?

Thanks in advance,
Aaron