annotate env/lib/python3.9/site-packages/shellescape-3.4.1.dist-info/METADATA @ 0:4f3585e2f14b draft default tip

"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"

Metadata-Version: 2.0
Name: shellescape
Version: 3.4.1
Summary: Shell escape a string to safely use it as a token in a shell command (backport of Python shlex.quote for Python versions 2.x & < 3.3)
Home-page: https://github.com/chrissimpkins/shellescape
Author: Christopher Simpkins
Author-email: [e-mail]
License: MIT license
Keywords: shell,quote,escape,backport,command line,command,subprocess
Platform: any
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Natural Language :: English
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 3
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Operating System :: POSIX
Classifier: Operating System :: Unix
Classifier: Operating System :: Microsoft :: Windows

Source Repository: https://github.com/chrissimpkins/shellescape

Description
-----------

The shellescape Python module defines the ``shellescape.quote()`` function that returns a shell-escaped version of a Python string.  This is a backport of the ``shlex.quote()`` function from Python 3.4.3 that makes it accessible to users of Python 3 versions < 3.3 and all Python 2.x versions.

quote(s)
--------

>From the Python documentation:

Return a shell-escaped version of the string s. The returned value is a string that can safely be used as one token in a shell command line, for cases where you cannot use a list.

This idiom would be unsafe:

.. code-block:: python

	>>> filename = 'somefile; rm -rf ~'
	>>> command = 'ls -l {}'.format(filename)
	>>> print(command)  # executed by a shell: boom!
	ls -l somefile; rm -rf ~


``quote()`` lets you plug the security hole:

.. code-block:: python

	>>> command = 'ls -l {}'.format(quote(filename))
	>>> print(command)
	ls -l 'somefile; rm -rf ~'
	>>> remote_command = 'ssh home {}'.format(quote(command))
	>>> print(remote_command)
	ssh home 'ls -l '"'"'somefile; rm -rf ~'"'"''


The quoting is compatible with UNIX shells and with ``shlex.split()``:

.. code-block:: python

	>>> remote_command = split(remote_command)
	>>> remote_command
	['ssh', 'home', "ls -l 'somefile; rm -rf ~'"]
	>>> command = split(remote_command[-1])
	>>> command
	['ls', '-l', 'somefile; rm -rf ~']


Usage
-----

Include ``shellescape`` in your project setup.py file ``install_requires`` dependency definition list:

.. code-block:: python

	setup(
	    ...
	    install_requires=['shellescape'],
	    ...
	)


Then import the ``quote`` function into your module(s) and use it as needed:

.. code-block:: python

	#!/usr/bin/env python
	# -*- coding: utf-8 -*-

	from shellescape import quote

	filename = "somefile; rm -rf ~"
	escaped_shell_command = 'ls -l {}'.format(quote(filename))


Issue Reporting
---------------

Issue reporting is available on the `GitHub repository <https://github.com/chrissimpkins/shellescape/issues>`_