1# Copyright (c) 2012 Amazon.com, Inc. or its affiliates.  All Rights Reserved
2#
3# Permission is hereby granted, free of charge, to any person obtaining a
4# copy of this software and associated documentation files (the
5# "Software"), to deal in the Software without restriction, including
6# without limitation the rights to use, copy, modify, merge, publish, dis-
7# tribute, sublicense, and/or sell copies of the Software, and to permit
8# persons to whom the Software is furnished to do so, subject to the fol-
9# lowing conditions:
10#
11# The above copyright notice and this permission notice shall be included
12# in all copies or substantial portions of the Software.
13#
14# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
16# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
17# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
20# IN THE SOFTWARE.
21#
22import os
23
24# This allows boto modules to say "from boto.compat import json".  This is
25# preferred so that all modules don't have to repeat this idiom.
26try:
27    import simplejson as json
28except ImportError:
29    import json
30
31
32# Switch to use encodebytes, which deprecates encodestring in Python 3
33try:
34    from base64 import encodebytes
35except ImportError:
36    from base64 import encodestring as encodebytes
37
38
39# If running in Google App Engine there is no "user" and
40# os.path.expanduser() will fail. Attempt to detect this case and use a
41# no-op expanduser function in this case.
42try:
43    os.path.expanduser('~')
44    expanduser = os.path.expanduser
45except (AttributeError, ImportError):
46    # This is probably running on App Engine.
47    expanduser = (lambda x: x)
48
49from boto.vendored import six
50
51from boto.vendored.six import BytesIO, StringIO
52from boto.vendored.six.moves import filter, http_client, map, _thread, \
53                                    urllib, zip
54from boto.vendored.six.moves.queue import Queue
55from boto.vendored.six.moves.urllib.parse import parse_qs, quote, unquote, \
56                                                 urlparse, urlsplit
57from boto.vendored.six.moves.urllib.request import urlopen
58
59if six.PY3:
60    # StandardError was removed, so use the base exception type instead
61    StandardError = Exception
62    long_type = int
63    from configparser import ConfigParser
64else:
65    StandardError = StandardError
66    long_type = long
67    from ConfigParser import SafeConfigParser as ConfigParser
68