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annotate env/lib/python3.7/site-packages/shellescape-3.4.1.dist-info/DESCRIPTION.rst @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 Source Repository: https://github.com/chrissimpkins/shellescape
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2
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3 Description
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4 -----------
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6 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.
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7
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8 quote(s)
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9 --------
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10
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11 >From the Python documentation:
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12
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13 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.
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14
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15 This idiom would be unsafe:
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16
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17 .. code-block:: python
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18
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19 >>> filename = 'somefile; rm -rf ~'
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20 >>> command = 'ls -l {}'.format(filename)
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21 >>> print(command) # executed by a shell: boom!
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22 ls -l somefile; rm -rf ~
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25 ``quote()`` lets you plug the security hole:
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27 .. code-block:: python
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28
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29 >>> command = 'ls -l {}'.format(quote(filename))
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30 >>> print(command)
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31 ls -l 'somefile; rm -rf ~'
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32 >>> remote_command = 'ssh home {}'.format(quote(command))
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33 >>> print(remote_command)
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34 ssh home 'ls -l '"'"'somefile; rm -rf ~'"'"''
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37 The quoting is compatible with UNIX shells and with ``shlex.split()``:
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38
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39 .. code-block:: python
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40
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41 >>> remote_command = split(remote_command)
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42 >>> remote_command
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43 ['ssh', 'home', "ls -l 'somefile; rm -rf ~'"]
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44 >>> command = split(remote_command[-1])
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45 >>> command
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46 ['ls', '-l', 'somefile; rm -rf ~']
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48
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49 Usage
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50 -----
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51
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52 Include ``shellescape`` in your project setup.py file ``install_requires`` dependency definition list:
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53
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54 .. code-block:: python
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55
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56 setup(
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57 ...
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58 install_requires=['shellescape'],
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59 ...
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60 )
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61
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62
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63 Then import the ``quote`` function into your module(s) and use it as needed:
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64
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65 .. code-block:: python
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66
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67 #!/usr/bin/env python
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68 # -*- coding: utf-8 -*-
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69
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70 from shellescape import quote
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72 filename = "somefile; rm -rf ~"
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73 escaped_shell_command = 'ls -l {}'.format(quote(filename))
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74
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75
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76 Issue Reporting
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77 ---------------
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79 Issue reporting is available on the `GitHub repository <https://github.com/chrissimpkins/shellescape/issues>`_
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