换行符转换脚本(Python)

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 Endingpositional arguments:  filename        file namesoptional 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 dbzhang800import osimport reimport os.pathdef convert_line_endings(temp, mode):    if mode in ['u', 'p']: #unix, posix        temp = 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':      #windows        temp = re.sub("\r(?!\n)|(?<!\r)\n", "\r\n", temp)    return tempdef convert_file(filename, args):    statinfo = None    with 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...' % 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 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 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