/brz/remove-bazaar

# Copyright (C) 2017 Bazaar hackers

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""

Module to aid writing a Python dialect compatible with 2.7 and 3.4+.

Initially pretty much just a subset of six while things get worked out.

"""

from __future__ import absolute_import

from six import (

    binary_type,

    indexbytes,

    int2byte,

    PY3,

    reraise,

    string_types,

    text_type,

    viewitems,

    viewkeys,

    viewvalues,

)

# The io module exists in Python 2.7 but lacks optimisation. Most uses are not

# performance critical, but want to measure before switching from cStringIO.

if PY3:

    import io as _io

    BytesIO = _io.BytesIO

    StringIO = _io.StringIO

    from builtins import range, map, zip

else:

    from cStringIO import StringIO as BytesIO

    from StringIO import StringIO

    from future_builtins import zip, map

    range = xrange

# GZ 2017-06-10: Work out if interning bits of inventory is behaviour we want

# to retain outside of StaticTuple, if so need to implement for Python 3.

if PY3:

    def bytesintern(b):

        """Dummy intern() function."""

        return b

else:

    bytesintern = intern