换行符转换脚本(Python)

虚幻0516

似乎，需要整理整理使用的python的脚本了：
很简单的一个东西，在'\n'、'\r\n'、'\r'3中换行符之间进行转换。


用法




usage: eol_convert.py [-h] [-r] [-m {u,p,w,m,d}] [-k] [-f]
                      filename [filename ...]

Convert Line Ending

positional arguments:
  filename        file names

optional arguments:
  -h, --help      show this help message and exit
  -r              walk through directory
  -m {u,p,w,m,d}  mode of the line ending
  -k              keep output file date
  -f              force conversion of binary files


源码


这只能算是argparse模块和os模块的utime()、stat()、walk()的一个简单的练习。可以用，但还相当不完善。
#!/usr/bin/env python
#2009-2011 dbzhang800
import os
import re
import os.pathdef convert_line_endings(temp, mode):if mode in ['u', 'p']: #unix, posixtemp = temp.replace('\r\n', '\n')temp = temp.replace('\r', '\n')elif mode == 'm':      #mac (before Mac OS 9)temp = temp.replace('\r\n', '\r')temp = temp.replace('\n', '\r')elif mode == 'w':      #windowstemp = re.sub("\r(?!\n)|(?<!\r)\n", "\r\n", temp)return tempdef convert_file(filename, args):statinfo = Nonewith file(filename, 'rb+') as f:data = f.read()if '\0' in data and not args.force:  #skip binary  file... ?print '%s is a binary file?, skip...' % filenamereturnnewdata = convert_line_endings(data, args.mode)if (data != newdata):statinfo = os.stat(filename) if args.keepdate else Nonef.seek(0)f.write(newdata)f.truncate()if statinfo:os.utime(filename, (statinfo.st_atime, statinfo.st_mtime))print filenamedef walk_dir(d, args):for root, dirs, files in os.walk(d):for name in files:convert_file(os.path.join(root, name), args)if __name__ == '__main__':import argparseimport sysparser = argparse.ArgumentParser(description='Convert Line Ending')parser.add_argument('filename', nargs='+', help='file names')parser.add_argument('-r', dest='recursive', action='store_true',help='walk through directory')parser.add_argument('-m', dest='mode', default='d', choices='upwmd',help='mode of the line ending')parser.add_argument('-k', dest='keepdate', action='store_true',help='keep output file date')parser.add_argument('-f', dest='force', action='store_true',help='force conversion of binary files')args = parser.parse_args()if args.mode == 'd':args.mode = 'w' if sys.platform == 'win32' else 'p'for filename in args.filename:if os.path.isdir(filename):if args.recursive:walk_dir(filename, args)else:print '%s is a directory, skip...' % filenameelif os.path.exists(filename):convert_file(filename, args)else:print '%s does not exist' % filename