python实现JAVA源代码从ANSI到UTF-8的批量转换方法

#-*- coding: utf-8 -*-import codecsimport osimport shutilimport reimport chardetdef convert_encoding(filename, target_encoding): # Backup the origin file. shutil.copyfile(filename, filename + '.bak') # convert file from the source encoding to target encoding content = codecs.open(filename, 'r').read() source_encoding = chardet.detect(content)['encoding'] print source_encoding, filename content = content.decode(source_encoding) #.encode(source_encoding) codecs.open(filename, 'w', encoding=target_encoding).write(content)def main(): for root, dirs, files in os.walk(os.getcwd()):  for f in files:   if f.lower().endswith('.java'):    filename = os.path.join(root, f)    try:     convert_encoding(filename, 'utf-8')    except Exception, e:     print filenamedef process_bak_files(action='restore'): for root, dirs, files in os.walk(os.getcwd()):  for f in files:   if f.lower().endswith('.java.bak'):    source = os.path.join(root, f)    target = os.path.join(root, re.sub('/.java/.bak$', '.java', f, flags=re.IGNORECASE))    try:     if action == 'restore':      shutil.move(source, target)     elif action == 'clear':      os.remove(source)    except Exception, e:     print sourceif __name__ == '__main__': # process_bak_files(action='clear') main()