普通TXT格式与DPL播放列表格式间的转换-Python

以下罗列部分关键代码,除了保证语法的正确性,请无视各种规范..
如需引用代码注明出处,无其他要求..

## txt普通->DPL --> made by guihet.com ##
# @version 1.1.2
def dpl():
    filepathname = tkinter.filedialog.askopenfilename(filetypes=[("TXT通用列表","*.txt"), ("列表","*.xspf .m3u"), ("All Files","*")])  
    filepath = os.path.dirname(filepathname)       
    filenametmp = os.path.splitext(filepathname)[0]    
    filename = os.path.split(filenametmp)[1]   
   
    fileexttmp = os.path.splitext(filepathname)[1]
    filetmpbf = '-1'
    if fileexttmp == '.txt':
        fileone = open(filepathname, "r" ,encoding="UTF-8")   
        filetmpbf = fileone.read()
    elif fileexttmp == '':
        print("用户取消打开文件")
        return
    else:
        messagebox.showinfo(title='异常',message='文件格式不支持!')
        return       
    timenow = datetime.datetime.now().strftime("%m%d%H%M")
    pathdpl = filepath + '/' + filename + '-' + timenow +".dpl"   
    filepot = open(pathdpl, 'w', encoding = 'UTF-8')   
    filepot.write('DAUMPLAYLIST\n')
    filepot.write('playname=\n')
    filepot.write('topindex=0\n\n')
   
    filetmp = filetmpbf
    try:
        pa = re.compile(r'.*?,.*?$', re.M)                                                                              
        fileonelist = pa.findall(filetmp)
        count = 0      
        for item in fileonelist:              
            zby = re.match(r'^(.*?),(.*?)$', item) 
            title = zby.group(1) 
            url = zby.group(2) 
            filepot.write('%d*file*%s\n' % (count, url))
            filepot.write('%d*title*%s\n' % (count, title))
            filepot.write('%d*played*0\n' % count)   
            count += 1
        messagebox.showinfo(title='完成',message='成功写入 dpl 文件!')
    except Exception as e: 
        messagebox.showinfo(title='异常',message='写入失败!请检查源文件格式!')          
    if fileexttmp == '.txt':
        fileone.close()
    else:
        pass
    filepot.close()
## END ##
## DPL->txt普通 --> made by guihet.com  ##
# @version 1.1.2
def dpltotxt(livepath = '-1'):
    livestr = ''
    fileone = open(livepath, "r" ,encoding="UTF-8")
    filetmp = fileone.read()
    try:
        pa = re.compile(r'file.*?played', re.S)
        fileonelist = pa.findall(filetmp)
        count = 0
        for item in fileonelist:
            title = 'title'
            url = 'url'         
            pb = re.compile(r'file.*?\n') 
            fileonelistb = pb.findall(item)
            for itemb in fileonelistb:
                zby = re.match(r'file\*(.*?)\n', itemb)
                title = zby.group(1)                        
            pc = re.compile(r'title.*?\n') 
            fileonelistc = pc.findall(item)
            for itemc in fileonelistc:
                zby = re.match(r'title\*(.*?)\n', itemc)
                url = zby.group(1)                  
            livestr = livestr + title + ',' + url + '\n'  
    except Exception as e: 
        print('提取DPL文件到字符串,错误!!')
        return '-1'       
    return livestr
## END ##
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