python 文件操作学习 Tkinter GUI

# -*- coding: utf-8 -*-
#使用cp936 写入文件名会有问题，原因是编码方式的差异

"""
创建GUI解码servo CAN数据
"""
import os
import re#正则表达式库
import sys
import time
import chardet
import datetime
import tkFileDialog
import tkMessageBox
from   Tkinter import *

filename = ""

def get_file():
    global filename
    #创建文件对话框,只打开txt类型文件
    filename = tkFileDialog.askopenfilename(filetypes=[("text file", "*.txt")])
    var.set(filename)

def convert_result():
    tkMessageBox.showinfo("转换结果",u"CAN数据解密成功")

#获取高位
def get_H(tmp):
    return (tmp&0xF0)>>4

#获取低位
def get_L(tmp):
    return tmp&0x0F

#拼接成一个字节 8bits
def get_all_byte(H,L):#注意优先级+高于<<高于&
    return ((L&0x0F)+((H&0x0F)<<4))

#拼接一个半字 16bits
def get_half_word(byteH,byteL):
    return (((byteH&0xFF)<<8)+(byteL&0xFF))

#拼接一个字 32bits H->L
def get_one_word(byte3,byte2,byte1,byte0):
    ha_wd1 = ((byte3&0xFF)<<8)+(byte2&0xFF)
    ha_wd0 = ((byte1&0xFF)<<8)+(byte0&0xFF)
    return (ha_wd1<<16)+ha_wd0

#数据解密
def data_unlock(buff):

##-------------拆分数据-----------##
        
    FrontCon_data0_L = get_L(buff[0])
    FrontCon_data0_H = get_H(buff[0])
    FrontCon_data1_L = get_L(buff[1])
    FrontCon_data1_H = get_H(buff[1])

    FrontCon_data2_L = get_L(buff[2])
    FrontCon_data2_H = get_H(buff[2])
    FrontCon_data3_L = get_L(buff[3])
    FrontCon_data3_H = get_H(buff[3])

    FrontCon_data4_L = get_L(buff[4])
    FrontCon_data4_H = get_H(buff[4])
    FrontCon_data5_L = get_L(buff[5])
    FrontCon_data5_H = get_H(buff[5])

    FrontCon_data6_L = get_L(buff[6])
    FrontCon_data6_H = get_H(buff[6])
    FrontCon_data7_L = get_L(buff[7])
    FrontCon_data7_H = get_H(buff[7])

##-------------解码数据-----------##
    
    Center_data0_L = FrontCon_data0_L
    Center_data0_H = FrontCon_data0_H
    Center_data1_L = FrontCon_data1_L
    Center_data1_H = FrontCon_data1_H

    Center_data2_L = FrontCon_data2_L^Center_data0_L
    Center_data2_H = FrontCon_data2_H^Center_data0_L
    Center_data3_L = FrontCon_data3_L^Center_data0_L
    Center_data3_H = FrontCon_data3_H^Center_data0_L

    Center_data4_L = FrontCon_data4_L^Center_data0_L
    Center_data4_H = FrontCon_data4_H^Center_data0_L
    Center_data5_L = FrontCon_data5_L^Center_data0_L
    Center_data5_H = FrontCon_data5_H^Center_data0_L

    Center_data6_L = FrontCon_data6_L^Center_data0_L
    Center_data6_H = FrontCon_data6_H^Center_data0_L
    Center_data7_L = FrontCon_data7_L^Center_data0_L
    Center_data7_H = FrontCon_data7_H^Center_data0_L

    OverCon_data7_L = Center_data0_L
    OverCon_data0_L = Center_data0_H
    OverCon_data7_H = Center_data1_L
    OverCon_data1_L = Center_data1_H

    OverCon_data4_L = Center_data2_L
    OverCon_data2_L = Center_data2_H
    OverCon_data4_H = Center_data3_L
    OverCon_data3_L = Center_data3_H

    OverCon_data0_H = Center_data4_L
    OverCon_data1_H = Center_data4_H
    OverCon_data2_H = Center_data5_L
    OverCon_data3_H = Center_data5_H

    OverCon_data5_L = Center_data6_L
    OverCon_data6_L = Center_data6_H
    OverCon_data5_H = Center_data7_L
    OverCon_data6_H = Center_data7_H

    buff[0] = get_all_byte(OverCon_data0_H,OverCon_data0_L)
    buff[1] = get_all_byte(OverCon_data1_H,OverCon_data1_L)
    buff[2] = get_all_byte(OverCon_data2_H,OverCon_data2_L)
    buff[3] = get_all_byte(OverCon_data3_H,OverCon_data3_L)

    buff[4] = get_all_byte(OverCon_data4_H,OverCon_data4_L)
    buff[5] = get_all_byte(OverCon_data5_H,OverCon_data5_L)
    buff[6] = get_all_byte(OverCon_data6_H,OverCon_data6_L)
    buff[7] = get_all_byte(OverCon_data7_H,OverCon_data7_L)

    #校验
    FrontCon_data0_L = (OverCon_data0_L+OverCon_data0_H+OverCon_data1_L+OverCon_data1_H+
    OverCon_data2_L+OverCon_data2_H+OverCon_data3_L+OverCon_data3_H+OverCon_data4_L+
    OverCon_data4_H+OverCon_data5_L+OverCon_data5_H+OverCon_data6_L+OverCon_data6_H)

    #print 'Front_0L',hex(FrontCon_data0_L),'Over_7H',hex(OverCon_data7_H)
    #注意C语言为公用体，累计会导致溢出，故只取低4bit
    if FrontCon_data0_L&0x0F == OverCon_data7_H&0x0F:
        return 1
    else:
        return 0

def unlock_can_data():
    global filename
    #filename = r'C:\Users\smart\Desktop\cal_money\raw_can_data.txt'
    #filename = 'C:/Users/smart/Desktop/摇床0等待CAN数据/0820_hunlunfh.txt'
    dir_idx = filename.rfind('/')#双斜杠表示查找'\',防止转义
    dir = filename[:dir_idx+1]
    print 'file name:',filename,'dir:',dir

    new_file = dir+'unlock_can_data.txt'
    new_f = open(new_file,'w')

    cur_time ='当前时间:'+time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())+'\n'
    new_f.write('源文件'+filename+'\n')
    new_f.write(cur_time)
    f = open(filename ,'r')
    for line in f:
        new_line = line
        #print line.strip()
        tmp = line.strip()
        cmd_id = 0
        can_data = []
        #从后向前查找0x08
        if tmp.rfind('0x08') != -1:
            #print 'data',tmp[tmp.rfind('0x08')+11:],'index:',tmp[tmp.rfind('0x08')+11]
            start_idx = tmp.rfind('0x08')+11
            end_idx = len(tmp)
            for i in range(8):                       
                can_data.append(eval('0x'+tmp[start_idx:start_idx+3]))
                start_idx += 3
            #print 'd0 to d7',can_data

            #查找命令ID
            if tmp.find('0x') != -1:
                start_idx = tmp.find('0x')
                #判断是否是伺服设备ID('44')
                if tmp[start_idx+8:start_idx+10] == '44':
                    cmd_id = eval(tmp[start_idx:start_idx+10])>>11
                    #print 'cmd id:',hex(cmd_id)

                    #处理各种ID的数据
                    if cmd_id == 0x03:
                        if data_unlock(can_data) == 1:#数据正确，解密成功
                            qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                            spd = can_data[4]
                            ctl = can_data[5]
                            if qei > 0x7FFFFFFF:
                                qei = 0xFFFFFFFF + 1 - qei
                                new_line = new_line.strip()+'('+'qei:'+'-'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n'
                            else:
                                new_line = new_line.strip()+'('+'qei:'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n'
                        else:
                            print 'unlock failed.'
                            
                    elif cmd_id == 0x04:
                        if data_unlock(can_data) == 1:#数据正确，解密成功
                            set_qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                            if set_qei > 0x7FFFFFFF:
                                set_qei = 0xFFFFFFFF + 1 - set_qei
                                new_line = new_line.strip()+'('+'set_qei:'+'-'+str(set_qei)+')'+'\n'
                            else:
                                new_line = new_line.strip()+'('+'set_qei:'+str(set_qei)+')'+'\n'
                        else:
                            print 'unlock failed.'
                        
                    elif cmd_id == 0x08:
                        qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                        spd = can_data[4]
                        ctl = can_data[5]
                        if qei > 0x7FFFFFFF:
                            qei = 0xFFFFFFFF + 1 - qei
                            new_line = new_line.strip()+'('+'qei:'+'-'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n'
                        else:
                            new_line = new_line.strip()+'('+'qei:'+str(qei)+' spd:'+str(spd)+' ctl:'+str(ctl)+')'+'\n'

                    elif cmd_id == 0x09:
                        set_qei = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                        if set_qei > 0x7FFFFFFF:
                            set_qei = 0xFFFFFFFF + 1 - set_qei
                            new_line = new_line.strip()+'('+'set_qei:'+'-'+str(set_qei)+')'+'\n'
                        else:
                            new_line = new_line.strip()+'('+'set_qei:'+str(set_qei)+')'+'\n'
                        
                    elif cmd_id == 0x100:
                        spd  = get_half_word(can_data[1],can_data[0])#H->L
                        spd1 = get_half_word(can_data[3],can_data[2])
                        pls  = get_half_word(can_data[5],can_data[4])
                        pls1 = get_half_word(can_data[7],can_data[6])
                        if (pls > 0x7FFF)and(pls1 > 0x7FFF):
                            pls = 0xFFFF + 1 - pls
                            pls1 = 0xFFFF + 1 - pls1
                            new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+'-'+str(pls)+' pls1:'+'-'+str(pls1)+')'+'\n'
                        elif pls > 0x7FFF:
                            pls = 0xFFFF + 1 - pls
                            new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+'-'+str(pls)+' pls1:'+str(pls1)+')'+'\n'
                            
                        elif pls1 > 0x7FFF:
                            pls1 = 0xFFFF + 1 - pls1
                            new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+str(pls)+' pls1:'+'-'+str(pls1)+')'+'\n'
                        else:
                            new_line = new_line.strip()+'('+'spd:'+str(spd)+' spd1:'+str(spd1)+' pls:'+str(pls)+' pls1:'+str(pls1)+')'+'\n'
                    elif cmd_id == 0x101:
                        nexspd = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                        nexpls = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4])
                        new_line = new_line.strip()+'('+'nexspd:'+str(nexspd)+' nexpls:'+str(nexpls)+')'+'\n'
                    elif cmd_id == 0x102:
                       startpos = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                       endpos   = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4])
                       new_line = new_line.strip()+'('+'startpos:'+str(startpos)+' endpos:'+str(endpos)+')'+'\n'
                    elif cmd_id == 0x103:
                        limL = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                        limR = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4])
                        if limL > 0x7FFFFFFF:
                            limL = 0xFFFFFFFF + 1 - limL
                            new_line = new_line.strip()+'('+'limL:'+'-'+str(limL)+' limR:'+str(limR)+')'+'\n'
                        else:
                            new_line = new_line.strip()+'('+'limL:'+str(limL)+' limR:'+str(limR)+')'+'\n'
                    elif cmd_id == 0x110:
                        spd = get_one_word(can_data[3],can_data[2],can_data[1],can_data[0])
                        pls = get_one_word(can_data[7],can_data[6],can_data[5],can_data[4])
                        if pls > 0x7FFFFFFF:
                            pls = 0xFFFFFFFF + 1 - pls
                            new_line = new_line.strip()+'('+'spd:'+str(spd)+' pls:'+'-'+str(pls)+')'+'\n'
                        else:
                            new_line = new_line.strip()+'('+'spd:'+str(spd)+' pls:'+str(pls)+')'+'\n'
                    else:
                        new_line = new_line.strip()+'\n'
        else:
            pass
        new_f.write(new_line.decode('gbk'))
    #print 'unlock finished.\n'
    f.close()
    new_f.close()
    convert_result()#弹出消息，解密成功

if __name__ == '__main__':
    reload(sys)
    sys.setdefaultencoding('utf-8')
    #创建根窗口
    root = Tk()
    root.title("CAN数据解密")
    root.geometry("400x200+450+210")#width x height;起始坐标

    frame = Frame(root)
    frame.pack()

    frm_L = Frame(frame)
    var = StringVar()
    Label(frm_L,text="").pack()
    Entry(frm_L,textvariable=var,bd=1).pack(expand=1)
    Label(frm_L,text="").pack()
    frm_L.pack()

    frm_R = Frame(frame)
    Button(frm_R,text="打开文件",command=get_file,height=2,width=8).pack(side=LEFT)
    Button(frm_R,text="解密",command=unlock_can_data,height=2,width=10).pack(side=RIGHT)
    frm_R.pack()

    frm_D = Frame(root)
    Button(frm_D,text="退出",command=frm_R.quit,height=2,width=8,bg="#B0D060").pack()
    frm_D.pack(side=BOTTOM)

    root.mainloop()

界面：