Re: [Pyparsing] Re: empty lines and restOfLine comments

[<pt...@au...>]

Ok, here's an example using pyparsing's Dict.  -- Paul

testdata = """
/ 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

"""

from pyparsing import *

comment = Literal('/') + restOfLine

lhs = Word( alphas, alphanums + "_" )
rhs = Word( alphas, alphanums + "_." )
EQUALS = Literal("=").suppress()

assignment  = LineStart() + lhs + EQUALS + rhs

# use pyparsing Dict to create dict-like access to parsed results
grammar = Dict( OneOrMore( Group( assignment ) ) )
grammar.ignore(comment)

results = grammar.parseString( testdata )

# some different example syntaxes for accessing results fields
print "\nShow some different example syntaxes for accessing results like attributes, or dictionary entries"
print "results.flores_file", results.flores_file
print 'results["ctrlres_file"]', results["ctrlres_file"]
for k in results.keys():
    print k,"->", results[k]
    
# can still access results like a list
print "\nJust list out tokens like reading a list"
for entry in results:
    print entry[0], ":", entry[1]
    
# or convert the results to an actual Python list
print "\nOr convert the results to a real Python list"
print results.asList()




----- Original Message -----
From: Robert Pollak <rob...@gm...>
Date: Thursday, March 31, 2005 5:48 pm
Subject: [Pyparsing] Re: empty lines and restOfLine comments

> Here is an update:
> I now use the following, which works fine as long as there are no "="
> characters in the comment lines:
> 
> chars = alphanums + "_" + "." + "\\"
> assignment = Word(chars) + Literal("=").suppress() + Word(chars)
> 
> cfgFile = file("cfg-snippet")
> 
> cfgData = "".join(cfgFile.readlines())
> 
> cfgFile.close()
> 
> assignments = dict([t for t,s,e in assignment.scanString(cfgData)])
> 
> print assignments['floin_file']
> 
> 
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