换行符转换脚本(Python)

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 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。

 

view plain

#!/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('\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 temp 

 

def 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 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   

 

作者：dbzhang800