Rory, You are a gentleman!
Thank you very much for your suggestion! Kind Regards, Seafoid. Rory Campbell-Lange wrote: > > On 18/12/09, seafoid (fitzp...@tcd.ie) wrote: >> http://old.nabble.com/Parsing-file-format-to-ensure-file-meets-criteria-to26837682.html > > Your specification is confusing. However I suggest you break it down > the code so that the steps in your programme are logical. Good luck. > > # example psuedocode > headers = {} > header_clauses = {} > current_header = None > > def header_parser (input): > split input into parts > make unique header desciptor > check not in headers else abort with error (?) > add descriptor to headers hash > # eg descriptor 1 = [attrib1, attrib2, attrib3] > return descriptor > > def clause_parser (input, current_header): > if current_header is None: abort > split clause into parts > store in array in header_clauses [current_header] > # this will make a data structure like this: > # header_clauses = { > # descriptor1 = {[ clause parts ], [ clause parts ], ... } > # descriptor2 = {[ clause parts ], [ clause parts ], ... } > > def comment_parser (input) > pass > > # now run over the file > for l in lines: > if l[0] == 'c': > comment_parser(l) > elif l[0] == 'p': > current_header = header_parser(l) > else: > clause_parser(l, current_header) > > # now that we have stored everything, check the data > for h in headers: > attrib1, attrib2, attrib3 = headers[h] > for c in header_clauses: > iterate over the arrays of clause parts either adding them > up or comparing them to the header attributes > > -- > Rory Campbell-Lange > Director > r...@campbell-lange.net > > Campbell-Lange Workshop > www.campbell-lange.net > 0207 6311 555 > 3 Tottenham Street London W1T 2AF > Registered in England No. 04551928 > -- > http://mail.python.org/mailman/listinfo/python-list > > -- View this message in context: http://old.nabble.com/Line-indexing-in-Python-tp26845253p26849944.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
