转换mp3名称的小程序

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#!/usr/bin/env python # -*- coding: cp936 -*- """ 用于批量转换特定目录下所有MP3名称（包括改目录下所有子目录），新名称格式：“演唱者－歌曲名称”。
Mp3文件格式：
 at end of file - 128 bytes offset type len name -------------------------------------------- 0 char 3 "TAG" 3 char 30 title 33 char 30 artist 63 char 30 album 93 char 4 year 97 char 30 comments 127 byte 1 genre -------------------------------------------- """ import sys import os import os.path class MP3INFO: """读取mp3文件中的演唱者和歌曲名称信息"""
def __init__(self, filename): self.title = '' self.artist = '' f = file(filename,'rb') f.seek(-128,2) s=f.read(3) if s == 'TAG': # 判断是否是mp3文件 strlist = [] for i in (30,30): s = f.read(i) pos = s.find('/0') if pos == 0: s = '' elif pos > 0: s = s[0:pos] strlist.append(s.strip()) self.title, self.artist = strlist f.close() def RenameMp3File(arg,dirname,names): """dirname: 目录名；names：目录下所有文件列表""" for name in names: filename = dirname + '/' + name if os.path.isdir(filename) or name[-3:].lower() != 'mp3': pass #该文件如果是目录或不是.mp3文件，则什么也不作 else: mp3 = MP3INFO(filename) #拼装新的文件名 if mp3.title == '': mp3filename = name elif mp3.artist == '': mp3filename = mp3.title + '.mp3' else: mp3filename = mp3.artist + ' - ' + mp3.title + '.mp3' #消除新文件名中的非法字符
a = '//:*?"<>|' t = [ x for x in mp3filename if x not in a] mp3filename = '' for x in t: mp3filename += x #如果是在winxp下，无需判断字符编码 #linux下需要将原来的字符编码格式转换为UTF8的格式，否则显示乱码 
codelist = ['gbk', 'hz', 'euc-tw', 'big5', 'gb18030', 'gb2312', / 'utf-8', 'utf-16', 'big5-hkscs','iso-2022-cn',/ 'iso-2022-jp', 'iso-2022-kr', 'iso-8859-1'] #codelist = ['utf-8', 'gbk', 'big5', 'iso-8859-1'] for code in codelist: try: mp3filename = unicode(mp3filename, code) mp3filename = mp3filename.encode('utf-8') # Judge that mp3.title not empty, because destination # filename will be equal to source filename when mp3.title # is empty. If not, it will throw OSError: duplication of # filename when run 'os.rename(...)' if mp3.title != '' and mp3filename != name: os.rename(filename, dirname + '/' + mp3filename) print code, '---', filename, ' --> ', mp3filename break except OSError: print 'duplication of name: ',filename pass except: if code == codelist[-1]: print code, '---', filename, ' ---', mp3filename print "Unexpected error:", sys.exc_info()[0] pass if __name__ == '__main__': p=r'/home/ljh/MyMusic' if len(sys.argv) > 1: p = sys.argv[1] os.path.walk(p, RenameMp3File,0)

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