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
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