[TxMt] Conditional regex
Dijk van Marc
marcvdijk at gmail.com
Fri May 22 17:56:09 UTC 2009
I'm developing a bundle for handling biomolecular structure files (PDB
files). I'm now working on
getting the language description sorted out. In doing this I ran into
a regex problem.
A PDB file is essentially a table. One line from such a table can be
ATOM 14 CA GLN A 2 -27.648 -9.581 30.325 1.00 10.00
In the language description I would like to use a regular expression
matched 'GLN' only if the line starts with either 'ATOM' or 'HETATM'.
This seams like
a conditional regular expression but my attempts to implement it at
such have failed
Can anyone help?
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