#!/usr/bin/python  
# -*- coding:utf-8 -*-  
#author: lingyue.wkl  
#desc: use to read ini  
#---------------------  
#2012-02-18 created  
#2012-09-02 changed for class support  
  
#---------------------  
import sys,os,time  
import configparser
  
  
class Config:  
    def __init__(self, path):  
        self.path = path  
        self.cf = configparser.ConfigParser()
        self.cf.read(self.path)  
    def get(self, field, key):  
        result = ""  
        try:  
            result = self.cf.get(field, key)  
        except:  
            result = ""  
        return result  
    def set(self, filed, key, value):  
        try:  
            self.cf.set(field, key, value)
            self.cf.write(open(self.path,'w'))
        except:  
            return False  
        return True  
              
              
  
def read_config(config_file_path, field, key):   
    cf = configparser.ConfigParser()
    try:  
        cf.read(config_file_path)  
        result = cf.get(field, key)  
    except:  
        sys.exit(1)  
    return result  
  
def write_config(config_file_path, field, key, value):  
    cf = configparser.ConfigParser()
    try:  
        cf.read(config_file_path)  
        cf.set(field, key, value)  
        cf.write(open(config_file_path,'w'))  
    except:  
        sys.exit(1)  
    return True  
  
if __name__ == "__main__":  
   if len(sys.argv) < 4:  
      sys.exit(1)  
  
   config_file_path = sys.argv[1]   
   field = sys.argv[2]  
   key = sys.argv[3]  
   if len(sys.argv) == 4:  
      print(read_config(config_file_path, field, key))
   else:  
      value = sys.argv[4]  
      write_config(config_file_path, field, key, value)