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# -*- coding: utf-8 -*-
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# Copyright 2014-2015 Canonical Limited.
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# This file is part of charm-helpers.
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# charm-helpers is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3 as
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# published by the Free Software Foundation.
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# charm-helpers is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public License
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# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
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__author__ = 'Jorge Niedbalski <niedbalski@ubuntu.com>'
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def sed(filename, before, after, flags='g'):
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Search and replaces the given pattern on filename.
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:param filename: relative or absolute file path.
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:param before: expression to be replaced (see 'man sed')
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:param after: expression to replace with (see 'man sed')
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:param flags: sed-compatible regex flags in example, to make
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the search and replace case insensitive, specify ``flags="i"``.
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The ``g`` flag is always specified regardless, so you do not
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need to remember to include it when overriding this parameter.
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:returns: If the sed command exit code was zero then return,
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otherwise raise CalledProcessError.
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expression = r's/{0}/{1}/{2}'.format(before,
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return subprocess.check_call(["sed", "-i", "-r", "-e",
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os.path.expanduser(filename)])
added
removed
hooks/charmhelpers/core/files.py
