Hello!
I am a(nother) Python and pyparsing newbie.
I want to use pyparsing-1.3 to parse files that look like the
following snippet, enclosed in triple quotes:
"""
/ Flux DSS-DESIGNER, Sample Data
/ Projekt: Set 1
// HYDRAULIK & QUERPROFIL-DATEN
floin_file = set_1.floin
floab_file = set_1.floab
floout_file = floout
flores_file = flores
// REGELUNG
ctrlin_file = set_1.ctrlin
ctrlres_file = ctrl_res
"""
Lines starting with a slash (comments) should be ignored.
I have been reading (either on this list or in the sf help forum - I
cannot find it right now) that empty lines can only be read using
grammar.parseString("".join(inputFile.readlines())), like in the
configParse.py example.
But when everything is joined like this, how can the end of the
comment lines be determined?
I am currently stuck at:
chars = alphanums + "_" + "." + "\\"
assignment = Word(chars) + "=" + Word(chars)
line = (assignment | restOfLine) + LineEnd
grammar = ZeroOrMore(line)
This does not even run through - I get
Traceback (most recent call last):
File "parseCfg.py", line 6, in ?
line = (assignment | restOfLine) + LineEnd
File "/usr/lib/python2.3/site-packages/pyparsing.py", line 635, in __add__
return And( [ self, other ] )
File "/usr/lib/python2.3/site-packages/pyparsing.py", line 1306, in __init__
if not e.mayReturnEmpty:
AttributeError: type object 'LineEnd' has no attribute 'mayReturnEmpty'
When I just use "line = assignment | restOfLine" instead, the parser
runs into an infinite loop on the snippet above, with or without the
"join readlines" trick.
Thank you for any help,
Robert
Btw, how can I use a pyparsing.Dict here to get direct access e.g. to
myParseResult['floin_file']?
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