很简单的一个东西，在'n'、'rn'、'r'3中换行符之间进行转换。

用法

复制代码 代码如下: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.path def convert_line_endings(temp, mode): if mode in ['u', 'p']: #unix, posix temp = temp.replace('rn', 'n') temp = temp.replace('r', 'n') elif mode == 'm': #mac (before Mac OS 9) temp = temp.replace('rn', 'r') temp = temp.replace('n', 'r') elif mode == 'w': #windows temp = re.sub("r(?!n)|("rn", temp) return temp def convert_file(filename, args): statinfo = None with file(filename, 'rb+') as f: data = f.read() if '' in data and not args.force: #skip binary file... ? print '%s is a binary file?, skip...' % filename return newdata = convert_line_endings(data, args.mode) if (data != newdata): statinfo = os.stat(filename) if args.keepdate else None f.seek(0) f.write(newdata) f.truncate() if statinfo: os.utime(filename, (statinfo.st_atime, statinfo.st_mtime)) print filename def 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 argparse import sys parser = 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...' % filename elif os.path.exists(filename): convert_file(filename, args) else: print '%s does not exist' % filename