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#
# configparse.py
#
# an example of using the parsing module to be able to process a .INI configuration file
#
# Copyright (c) 2003, Paul McGuire
#
from pyparsing import (
Literal,
Word,
ZeroOrMore,
Group,
Dict,
Optional,
printables,
ParseException,
restOfLine,
empty,
)
import pprint
inibnf = None
def inifile_BNF():
global inibnf
if not inibnf:
# punctuation
lbrack = Literal("[").suppress()
rbrack = Literal("]").suppress()
equals = Literal("=").suppress()
semi = Literal(";")
comment = semi + Optional(restOfLine)
nonrbrack = "".join([c for c in printables if c != "]"]) + " \t"
nonequals = "".join([c for c in printables if c != "="]) + " \t"
sectionDef = lbrack + Word(nonrbrack) + rbrack
keyDef = ~lbrack + Word(nonequals) + equals + empty + restOfLine
# strip any leading or trailing blanks from key
def stripKey(tokens):
tokens[0] = tokens[0].strip()
keyDef.setParseAction(stripKey)
# using Dict will allow retrieval of named data fields as attributes of the parsed results
inibnf = Dict(ZeroOrMore(Group(sectionDef + Dict(ZeroOrMore(Group(keyDef))))))
inibnf.ignore(comment)
return inibnf
pp = pprint.PrettyPrinter(2)
def test(strng):
print(strng)
try:
iniFile = open(strng)
iniData = "".join(iniFile.readlines())
bnf = inifile_BNF()
tokens = bnf.parseString(iniData)
pp.pprint(tokens.asList())
except ParseException as err:
print(err.line)
print(" " * (err.column - 1) + "^")
print(err)
iniFile.close()
print()
return tokens
if __name__ == "__main__":
ini = test("setup.ini")
print("ini['Startup']['modemid'] =", ini["Startup"]["modemid"])
print("ini.Startup =", ini.Startup)
print("ini.Startup.modemid =", ini.Startup.modemid)
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