from pyparsing import (Suppress, Keyword, Word, alphas, alphanums, Combine,
                       OneOrMore, quotedString, removeQuotes, Group, ZeroOrMore, SkipTo, LineEnd, Regex)
import pprint
from collections import defaultdict

LBRACE, RBRACE, EQ = map(Suppress, "{}=")

DEFINE = Keyword("define")

filter_comments = Regex(r"#.*")
filter_comments = filter_comments.suppress()

ident = Word(alphas, alphanums)
dottedIdent = Combine(ident + OneOrMore("_" + ident))

value = Regex('.*')
propertyDefn = Group((dottedIdent | ident)("name") + value("value"))

objectBodyDefn = Group(ZeroOrMore(propertyDefn("properties*")))

objectDefn = Group(DEFINE + ident("type") + LBRACE + objectBodyDefn("body") + RBRACE)

parser = ZeroOrMore(objectDefn)

config = defaultdict(defaultdict)
for obj in parser.parseFile('objects.cache'):
    if obj.body.properties:
        o = defaultdict(defaultdict)
        for prop in obj.body.properties:
            o[prop.name] = prop.value
        if obj.type in ('service', 'host'):
            config[obj.type][o["host_name"]] = o
        if obj.type == 'timeperiod':
            config[obj.type][o["timeperiod_name"]] = o
        if obj.type == 'command':
            config[obj.type][o["command_name"]] = o
    else:
        print(' ', '<none>')
    print()

pprint.pp(config)