view planemo/lib/python3.7/site-packages/shellescape/main.py @ 1:56ad4e20f292 draft

"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"

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

import re


_find_unsafe = re.compile(r'[a-zA-Z0-9_^@%+=:,./-]').search


def quote(s):
    """Return a shell-escaped version of the string *s*."""
    if not s:
        return "''"

    if _find_unsafe(s) is None:
        return s

    # use single quotes, and put single quotes into double quotes
    # the string $'b is then quoted as '$'"'"'b'

    return "'" + s.replace("'", "'\"'\"'") + "'"