Re: line to argv transformation

From	Marko Rauhamaa <marko@pacujo.net>
Newsgroups	comp.lang.python
Subject	Re: line to argv transformation
Date	2014-06-16 13:59 +0300
Organization	A noiseless patient Spider
Message-ID	<871tupp1bb.fsf@elektro.pacujo.net> (permalink)
References	<539EBF61.4050106@rece.vub.ac.be> <CAPTjJmqd74v013WwG2QrZP2y9N+gMk0TK5xT5-yy3=8gOuAs4g@mail.gmail.com> <539EC5EF.7040205@rece.vub.ac.be> <mailman.11082.1402915284.18130.python-list@python.org>

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Chris Angelico <rosuav@gmail.com>:

> def shell_split(cmd):
>     return subprocess.check_output("""python -c 'import sys;
> print("\\0".join(sys.argv[1:]))' """+cmd,shell=True)[:-1].split(b"\0")
>
> You'll get back a list of byte strings, in any case. Feel free to pass
> them through a decode operation, or to incorporate a .decode() into
> the above stream, as you wish.

Now you are subject to the quirks of /bin/sh. For example, '*.xyz'
expands itself ('*.xyz') if there is no match in the current working
directory.

Moreover, you need to guard against arguments like

   $(cat ~/.ssh/id_dsa)

which would spill the beans.


Marko

Thread

Re: line to argv transformation Chris Angelico <rosuav@gmail.com> - 2014-06-16 20:41 +1000
  Re: line to argv transformation Marko Rauhamaa <marko@pacujo.net> - 2014-06-16 13:59 +0300
    Re: line to argv transformation Chris Angelico <rosuav@gmail.com> - 2014-06-16 21:25 +1000

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