001 | # -*- coding: cp936 -*- |
002 | """ |
003 | 将MP3文件中的ID3V2.3部分去掉,以便在MP3机上播放 |
004 | 用法：mp3lcear [源mp3目录] [生成的mp3目录] |
005 | """ |
006 | import sys |
007 | import os |
008 | import string |
009 | import shutil |
010 | import struct |
011 | import thread |
012 | import threading |
013 | import time |
014 | |
015 | mp3suffix = 'mp3' |
016 | |
017 | class Process(threading.Thread): |
018 | """ |
019 | 简单地在运行的过程中显示进度 |
020 | """ |
021 | def __init__(self,msg,sleepTime): |
022 | threading.Thread.__init__(self) |
023 | self.msg = msg |
024 | self.running = True |
025 | self.sleepTime = sleepTime |
026 | def setPause(self,pause): |
027 | self.pause = pause |
028 | def setRunning(self,running): |
029 | self.running = running |
030 | def run (self): |
031 | while(self.running): |
032 | self.pause.wait() |
033 | print self.msg, |
034 | time.sleep(self.sleepTime) |
035 | |
036 | def usage(code, msg=''): |
037 | """ |
038 | 程序的使用方法 |
039 | """ |
040 | print >> sys.stderr, __doc__ |
041 | if msg: |
042 | print >> sys.stderr, msg |
043 | sys.exit(code) |
044 | |
045 | def checkDir(argDir,create=False): |
046 | """ |
047 | 检查目录是否存在,如果create为Ture,则新建一个目录 |
048 | """ |
049 | tempDir = None |
050 | if(not os.path.isdir(argDir)): |
051 | currentDir = os.path.abspath(os.curdir) |
052 | tempDir = os.path.join(currentDir,argDir) |
053 | if(not os.path.isdir(tempDir) and create): |
054 | os.mkdir(tempDir) |
055 | else: |
056 | usage(1,"目录"+argDir+"不存在") |
057 | else: |
058 | tempDir = os.path.abspath(argDir) |
059 | return tempDir |
060 | |
061 | def clearMp3(srcFile,destFile): |
062 | """ |
063 | 修改mp3文件，并将其创建到destFile所指定的地址 |
064 | """ |
065 | global process |
066 | srcfp = None |
067 | filesize = os.path.getsize(srcFile) |
068 | try: |
069 | srcfp = open(srcFile,'rb') |
070 | head = srcfp.read(3) |
071 | if(head=='ID3'): |
072 | srcfp.seek(3,1) |
073 | size = srcfp.read(4) |
074 | if(not len(size)==4): |
075 | print srcFile+'文件格式错误' |
076 | else: |
077 | size0 = struct.unpack('b',size[0])[0] |
078 | size1 = struct.unpack('b',size[1])[0] |
079 | size2 = struct.unpack('b',size[2])[0] |
080 | size3 = struct.unpack('b',size[3])[0] |
081 | headSize =(((size0&0x7f)<<21) | ((size1&0x7f)<<14) | ((size2&0x7f)<<7) | (size3&0x7f)) |
082 | filesize = filesize - headSize |
083 | destfp = None |
084 | try: |
085 | dataLen = 0 |
086 | destfp = open(destFile,'wb') |
087 | srcfp.seek(headSize,1) |
088 | data=srcfp.read(1024) |
089 | while (data!= ''): |
090 | destfp.write(data) |
091 | data=srcfp.read(1024) |
092 | except Exception,e: |
093 | print '创建文件'+destFile+'错误',e |
094 | try: |
095 | if (destfp != None): |
096 | destfp.close |
097 | except Exception,de: |
098 | print de |
099 | else: |
100 | print srcFile+'不需要修改 拷贝', |
101 | try: |
102 | shutil.copyfile(srcFile,destFile) |
103 | except Exception, ce: |
104 | print ce |
105 | except Exception,oe: |
106 | print '修改中出错',oe |
107 | try: |
108 | if (srcfp != None): |
109 | srcfp.close() |
110 | except Exception,se: |
111 | print de |
112 | |
113 | |
114 | |
115 | if __name__ == "__main__": |
116 | if(len(sys.argv)<3): |
117 | usage(1) |
118 | global process |
119 | |
120 | sourceDir = checkDir(sys.argv[1]) |
121 | destDir = checkDir(sys.argv[2],True) |
122 | |
123 | print 'Mp3源目录',sourceDir |
124 | print 'Mp3目的目录',destDir |
125 | |
126 | process = Process('...',1) |
127 | pause = threading.Event() |
128 | process.setPause(pause) |
129 | |
130 | process.start() |
131 | |
132 | for filename in os.listdir(sourceDir): |
133 | srcPath = os.path.join(sourceDir, filename) |
134 | destPath = os.path.join(destDir, filename) |
135 | if os.path.isfile(srcPath): |
136 | print '开始处理 '+filename, |
137 | tempfilename = filename.lower() |
138 | if(not tempfilename.endswith(mp3suffix)): |
139 | print filename+'不是一个mp3文件\n' |
140 | else: |
141 | pause.set() |
142 | clearMp3(srcPath,destPath) |
143 | pause.clear() |
144 | print '结束 \n' |
145 | pause.set() |
146 | process.running = False |
147 | sys.exit(0) |
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