Разбор алгоритма парсера ini файла

# Embedded file name: techlgk.py
from time import sleep, time
import datetime
from flink import flink
from ConfigParser import ConfigParser
 
class TechLgk:
 
    class error(Exception):
 
        def __init__(self, info):
            self.info = info
 
    def __init__(self, fname):
        try:
            self.__flink = flink('TechLgk', 'TechLgk for Schenck Disomat Task')
        except:
            raise TechLgk.error('TechLgk: Error! Start MonitorPro first!')
 
        self.__parseConfFile('%s\\ini\\%s' % (self.__flink.get_AppDir(), fname))
 
    def __parseConfFile(self, fname):
        fini = ConfigParser()
        fini.optionxform = str
        try:
            fini.readfp(open(fname))
        except:
            raise TechLgk.error("TechLgk: Error! Can't find configuration file %s." % (fname,))
 
        if not fini.has_section('COMMON'):
            raise TechLgk.error('TechLgk: Error! Bad conf file format!')
        self.__scan_period = fini.getfloat('COMMON', 'scan_period') if fini.has_option('COMMON', 'scan_period') else 0.5
        slgk = dict(fini.items('SCAN_LOGIC'))
        self.__scan_logic = {}
        self.__out_tags = {}
        d = {}
        for lgkk in slgk.keys():
            if lgkk[:3] != 'tg@':
                continue
            tg_alm = lgkk[3:]
            lgkv = slgk[lgkk].split(';')
            if lgkv[0][:3] == 'tg@':
                d[lgkv[0][3:]] = 1
            if lgkv[3][:3] == 'tg@':
                d[lgkv[3][3:]] = 1
            self.__scan_logic[tg_alm] = [lgkv[0][3:],
             lgkv[1],
             float(lgkv[2]),
             lgkv[3][3:],
             0.0,
             0]
 
        self.__alarm_triger_tag = fini.get('COMMON', 'alarm_trigger') if fini.has_option('COMMON', 'alarm_trigger') else None
        if 'tg@' in self.__alarm_triger_tag:
            self.__alarm_triger_tag = self.__alarm_triger_tag[3:]
        self.__alarm_triger = 0
        self.__in_tags = tuple(d.keys())
        return
 
    def run(self):
        while not self.__flink.test_term_flag():
            in_tags = self.__flink.tg_read(self.__in_tags)
            self.__alarm_triger = 0
            for tg_alm in self.__scan_logic.keys():
                lgkv = self.__scan_logic[tg_alm]
                vl1, vl2 = in_tags[lgkv[0]] if in_tags.has_key(lgkv[0]) else int(lgkv[0]), in_tags[lgkv[3]] if in_tags.has_key(lgkv[3]) else int(lgkv[3])
                if lgkv[1] == '==':
                    lgkv[4] = lgkv[4] + self.__scan_period if vl1 == vl2 else 0.0
                if lgkv[1] == '!=':
                    lgkv[4] = lgkv[4] + self.__scan_period if vl1 != vl2 else 0.0
                alm = 1 if lgkv[4] > lgkv[2] else 0
                self.__out_tags[tg_alm] = alm
                if alm == 1 and lgkv[5] == 0:
                    self.__alarm_triger = 1
                lgkv[5] = alm
 
            self.__flink.tg_write(self.__out_tags)
            if self.__alarm_triger_tag:
                if self.__alarm_triger:
                    self.__flink.tg_write({self.__alarm_triger_tag: self.__alarm_triger})
            sleep(self.__scan_period)
 
 
techlgk = TechLgk('techlgk.cfg')
techlgk.run()