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59 lines
2.4 KiB
59 lines
2.4 KiB
# Copyright (c) 2009, Rotem Yaari <vmalloc@gmail.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of organization nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY Rotem Yaari ''AS IS'' AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL Rotem Yaari BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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class CommandString(object):
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"""
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>>> CommandString('a', 'b', 'c')
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a b c
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>>> CommandString('a', 'b', None, 'c')
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a b c
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"""
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def __init__(self, *args):
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self.command = ""
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for arg in args:
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if not arg:
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continue
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if self.command:
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self.command += " "
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self.command += str(arg)
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def __repr__(self):
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return self.command
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def quote_for_shell(s):
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"""
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>>> print quote_for_shell('this is a " string')
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"this is a \\" string"
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>>> print quote_for_shell('this is a $shell variable')
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"this is a \\$shell variable"
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>>> print quote_for_shell(r'an escaped \\$')
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"an escaped \\\\\\$"
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"""
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returned = s.replace("\\", "\\\\").replace('"', '\\"').replace("$", "\\$")
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if " " in returned:
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returned = '"%s"' % returned
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return returned
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if __name__ == '__main__':
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import doctest
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doctest.testmod()
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