再发个Python的小脚本

很多时候我们会遇到类似这样的字符串“%E5%8F%AF%E5%8F%AF%E7%86%8A”，如果你稍有经验就应该知道这是URL编码的汉字.

URL编码的产生是因为在URL只有少量的字符可以被使用:
“…Only alphanumerics [0-9a-zA-Z], the special characters “$-_.+!*’(),” [not including the quotes - ed], and reserved characters used for their reserved purposes may be used unencoded within a URL.”

这里有一篇介绍URL编码的文章。

为了方便把“%E5%8F%AF%E5%8F%AF%E7%86%8A”这样的字符串转换为我们可读字符串，我写了这个小工具；同时可以做反向的转换。例如把”可可熊”转换为“%E5%8F%AF%E5%8F%AF%E7%86%8A”。

做个示例,使用该程序在命令行下获取“\”的URL编码：
[cocobear@cocobear sn]$ ./url2read.py -r “”‘\’””
GBK:
%5C
UTF8:
%5C

注意这里由于存在shell的解释，需要这样把“\”围起来。

这个脚本可以很好的在Linux与Windows下使用，贴代码：

#!/usr/bin/env python
#coding: utf-8 
#author:        cocobear
#version:       0.1

import urllib
import sys,getopt,re
__doc__ = """Usage:
            ./url2read.py -h
            ./url2read.py -r ftp://cocobear.github.io/中国
            ./url2read.py http://cocobear.github.io/%E4%B8%AD%E5%9B%BD
        """

def url2read(s):

    s = urllib.unquote(s)
    try: 
            s = s.decode('utf-8')
    except UnicodeDecodeError:
            s = s.decode('gbk')
    finally:
            print s.encode(sys.stdin.encoding)

def read2url(s):
    head = ''
    g = re.search('^(http|ftp://)(.*)',s)
    if g:
        head = g.group(1)
        s = g.group(2)
    gbk = urllib.quote(s.decode(sys.stdin.encoding).encode('gbk'))

    utf8 = urllib.quote(s.decode(sys.stdin.encoding).encode('utf-8'))
    if gbk == utf8:
        print head+gbk
        return 0
    else:
        print "UTF8:\n"+head+utf8
        print "GBK:\n"+head+gbk
        return 0

def main(argv=None):
    f = False
    if len(sys.argv) < 2:
        print __doc__
        return 1
    try:
        opts,args = getopt.getopt(sys.argv[1:],"h,r",["help","reverse"])
    except getopt.error,msg:
        print msg
        print __doc__
        return 1
    for o,a in opts:
        if o in ("-h","--help"):
            print __doc__
            return 0
        if o in ("-r","--reverse"):
            f = True
    for arg in args: 
        if f:
            return read2url(arg)
        else:
            return url2read(arg)

if __name__ == "__main__":
    sys.exit(main())

代码下载

Comments

luguo: 恩，这个简单易懂～

Amankwah: 这个不错~

shuge.lee: yuki@yukilib /home/share/code/python_note $ ./url2read.py http://www.shuge.org/中文 File “./url2read.py”, line 12 SyntaxError: Non-ASCII character ‘\xe4’ in file ./url2read.py on line 13, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details yuki@yukilib /home/share/code/python_note $ 怎么回事？

可可熊: 使用参数-r，需要反转。