【Python】torrentParser1.00

代码：

#------------------------------------------------------------------------------------
# torrentParser1.00，用于解析torrent文件
# 2018年5月8日
#------------------------------------------------------------------------------------
from bencode import bdecode
import time

#-------------------------------------
# torrentParser类
#-------------------------------------
class torrentParser(object):
    # 构造函数
    def __init__(self,filePathname):
        self.filePathname=filePathname
        with open(filePathname,'rb') as fObj:
            self.fileDic=bdecode(fObj.read()) 

    # 得到所有键值
    def getKeys(self):
        return self.fileDic.keys()

    # 获得tracker服务器的URL
    def getAnnounce(self):
        if 'announce' in self.fileDic:
            return self.fileDic['announce'].decode('utf-8')
        return ''

    # 获得tracker服务器的URL列表
    def getAnnounceList(self):
        retval=[]

        if 'announce-list' in self.fileDic:
            arr=self.fileDic['announce-list']

            for childArr in arr:
                for item in childArr:
                    retval.append(item.decode('utf-8'))

        return retval

    # 得到制作日期
    def getCreateTime(self):
        if 'creation date' in self.fileDic:
            unixTimestamp=self.fileDic['creation date']
            firmalTime = time.localtime(unixTimestamp)
            dt = time.strftime('%Y-%m-%d %H:%M:%S', firmalTime)

            return dt
        else:
            return ''

    # 获得编码方式
    def getEncoding(self):
        if 'encoding' in self.fileDic:
            return self.fileDic['encoding'].decode('utf-8') #去掉字符串前面的b'
        return ''

    # 是否包含多个文件
    def hasMultiFiles(self):
        if 'files' in self.fileDic['info']:
            return True
        else:
            return False

    # 获得文件名
    def getTitle(self):
        filename=''
        info = self.fileDic['info'] 

        if 'name.utf-8' in info:
            filename=info['name.utf-8']
        else:
            filename = info['name']  

        return filename.decode('utf-8') # \x 开头编码的数据解码成中文

    # 获得备注(可选项)
    def getComment(self):
        if 'comment' in self.fileDic:
            return self.fileDic['comment'].decode('utf-8')
        return ''

    # 获得创建者(可选项)
    def getCreatedBy(self):
        if 'created by' in self.fileDic:
            return self.fileDic['created by'].decode('utf-8')
        return ''

    # 多文件的情况下，得到多个文件的个数
    def getFileCount(self):
        return len(self.fileDic['info']['files'])

    # 多文件的情况下，获得所有文件，返回为:dic
    def getFiles(self):
        files=[]

        for item in self.fileDic['info']['files']:
            file={}

            for key in item.keys():
                value=item.get(key)
                #value=value.decode('utf-8');
                file[key]=value

            files.append(file)

        return files

    # 单文件情况下，取文件名
    def getSingleFileName(self):
        return str(self.fileDic['info']['name'],'utf-8')

    # 单文件情况下，取文件长度
    def getSingleFileLength(self):
        return self.fileDic['info']['length']

    # 单文件情况下，取文件md5sum
    def getSingleFileMd5sum(self):
        if 'md5sum' in self.fileDic['info']:
            return str(self.fileDic['info']['md5sum'],'utf-8')
        else:
            return ''

    # 单文件情况下，取文件长度
    def getSingleFilePieceLength(self):
        return self.fileDic['info']['piece length']

    # 单文件情况下，取文件pieces
    def getSingleFilePieces(self):
        return self.fileDic['info']['pieces']

    # 得到文件简报
    def getBrief(self):
        retval=""
        retval=retval+"File:"+self.filePathname+"\n"
        retval=retval+"announce:"+self.getAnnounce()+"\n"

        arr=self.getAnnounceList()
        if(len(arr)>0):
            retval=retval+"announce list:"+"\n"

            for it in arr:
                retval=retval+"\t"+it+"\n"    

        retval=retval+"Create time:"+self.getCreateTime()+"\n"
        retval=retval+"Ecoding:"+self.getEncoding()+"\n"
        retval=retval+"Title:"+self.getTitle()+"\n"
        retval=retval+"Comment:"+self.getComment()+"\n"
        retval=retval+"Created by:"+self.getCreatedBy()+"\n"

        hasMulti=self.hasMultiFiles()
        retval=retval+"has multi files:"+str(hasMulti)+"\n"
        if hasMulti==True:
            retval=retval+"[多文件结构]"+"\n"

            retval=retval+"包含文件个数为:"+str(self.getFileCount())+"\n"
            retval=retval+"Files:"+"\n"

            files=self.getFiles();
            index=1
            for item in files:
                #retval=retval+"\t"+str(item)+"\n"
                retval=retval+"\tfile#"+str(index)+"\n"
                for key in item.keys():
                    value=item.get(key)

                    #if isinstance(value,bytes):
                    retval=retval+"\t\t"+str(key)+":"+str(value)+"\n" # 这里转化有问题
                retval=retval+"\n"    

                index=index+1
        else:
            retval=retval+"[单文件结构]"+"\n"
            retval=retval+"文件名为:"+self.getSingleFileName()+"\n"
            retval=retval+"文件长度:"+str(self.getSingleFileLength())+"byte\n"
            retval=retval+"文件md5sum:"+self.getSingleFileMd5sum()+"\n"
            retval=retval+"文件块长度:"+str(self.getSingleFilePieceLength())+"byte\n"
            #retval=retval+"文件Pieces:"+str(self.getSingleFilePieces())+"\n"

        return retval

def main():
    tp=torrentParser(filePathname='./1.torrent')
    print(tp.getBrief());

# Start
main()

输出：

C:\Users\horn1\Desktop\python\38-torrentParser>python torrentParser.py
File:./1.torrent
announce:udp://fr33domtracker.h33t.com:3310/announce
announce list:
        udp://fr33domtracker.h33t.com:3310/announce
        http://fr33dom.h33t.com:3310/announce
        udp://tracker.publichd.eu/announce
        http://tracker.publichd.eu/announce
        http://tracker.publicbt.com:80/announce
        http://exodus.desync.com:6969/announce
        http://exodus.desync.com/announce
        http://tracker.prq.to:6969/announce
        http://ipv4.tracker.harry.lu/announce
        udp://tracker.1337x.org:80/announce
        udp://tracker.openbittorrent.com:80/announce
        udp://tracker.ccc.de:80
        udp://tracker.istole.it:80/announce
        udp://10.rarbg.com/announce
Create time:2012-08-27 19:07:23
Ecoding:UTF-8
Title:[dydao.com]The.Mask.of.Love.2012.HDTV.720p.x264.AC3-HD.mkv
Comment:www.dydao.com
Created by:uTorrent/3130
has multi files:False
[单文件结构]
文件名为:[dydao.com]The.Mask.of.Love.2012.HDTV.720p.x264.AC3-HD.mkv
文件长度:4695257841byte
文件md5sum:
文件块长度:8388608byte

2018年5月8日