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      # pycompat.py - portability shim for python 3

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      """Mercurial portability shim for python 3.

      This contains aliases to hide python version-specific details from the core.

      """

      from __future__ import absolute_import

      try:

          import cPickle as pickle

          pickle.dumps

      except ImportError:

          import pickle

      try:

          import cStringIO as io

          stringio = io.StringIO

      except ImportError:

          import io

          stringio = io.StringIO

      try:

          import Queue as _queue

          _queue.Queue

      except ImportError:

          import queue as _queue

      empty = _queue.Empty

      queue = _queue.Queue

      class _pycompatstub(object):

          pass

      def _alias(alias, origin, items):

          """ populate a _pycompatstub

          copies items from origin to alias

          """

          def hgcase(item):

              return item.replace('_', '').lower()

          for item in items:

              try:

                  setattr(alias, hgcase(item), getattr(origin, item))

              except AttributeError:

                  pass

      urlreq = _pycompatstub()

      urlerr = _pycompatstub()

      try:

          import urllib2

          import urllib

          _alias(urlreq, urllib, (

              "addclosehook",

              "addinfourl",

              "ftpwrapper",

              "pathname2url",

              "quote",

              "splitattr",

              "splitpasswd",

              "splitport",

              "splituser",

              "unquote",

              "url2pathname",

              "urlencode",

              "urlencode",

          ))

          _alias(urlreq, urllib2, (

              "AbstractHTTPHandler",

              "BaseHandler",

              "build_opener",

              "FileHandler",

              "FTPHandler",

              "HTTPBasicAuthHandler",

              "HTTPDigestAuthHandler",

              "HTTPHandler",

              "HTTPPasswordMgrWithDefaultRealm",

              "HTTPSHandler",

              "install_opener",

              "ProxyHandler",

              "Request",

              "urlopen",

          ))

          _alias(urlerr, urllib2, (

              "HTTPError",

              "URLError",

          ))

      except ImportError:

          import urllib.request

          _alias(urlreq, urllib.request, (

              "AbstractHTTPHandler",

              "addclosehook",

              "addinfourl",

              "BaseHandler",

              "build_opener",

              "FileHandler",

              "FTPHandler",

              "ftpwrapper",

              "HTTPHandler",

              "HTTPSHandler",

              "install_opener",

              "pathname2url",

              "HTTPBasicAuthHandler",

              "HTTPDigestAuthHandler",

              "ProxyHandler",

              "quote",

              "Request",

              "splitattr",

              "splitpasswd",

              "splitport",

              "splituser",

              "unquote",

              "url2pathname",

              "urlopen",

          ))

          import urllib.error

          _alias(urlerr, urllib.error, (

              "HTTPError",

              "URLError",

          ))

      try:

          xrange

      except NameError:

          import builtins

          builtins.xrange = range

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				# pycompat.py - portability shim for python 3
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				"""Mercurial portability shim for python 3.

				This contains aliases to hide python version-specific details from the core.
				"""

				from __future__ import absolute_import

				try:
				import cPickle as pickle
				pickle.dumps
				except ImportError:
				import pickle

				try:
				import cStringIO as io
				stringio = io.StringIO
				except ImportError:
				import io
				stringio = io.StringIO

				try:
				import Queue as _queue
				_queue.Queue
				except ImportError:
				import queue as _queue
				empty = _queue.Empty
				queue = _queue.Queue

				class _pycompatstub(object):
				pass

				def _alias(alias, origin, items):
				""" populate a _pycompatstub

				copies items from origin to alias
				"""
				def hgcase(item):
				return item.replace('_', '').lower()
				for item in items:
				try:
				setattr(alias, hgcase(item), getattr(origin, item))
				except AttributeError:
				pass

				urlreq = _pycompatstub()
				urlerr = _pycompatstub()
				try:
				import urllib2
				import urllib
				_alias(urlreq, urllib, (
				"addclosehook",
				"addinfourl",
				"ftpwrapper",
				"pathname2url",
				"quote",
				"splitattr",
				"splitpasswd",
				"splitport",
				"splituser",
				"unquote",
				"url2pathname",
				"urlencode",
				"urlencode",
				))
				_alias(urlreq, urllib2, (
				"AbstractHTTPHandler",
				"BaseHandler",
				"build_opener",
				"FileHandler",
				"FTPHandler",
				"HTTPBasicAuthHandler",
				"HTTPDigestAuthHandler",
				"HTTPHandler",
				"HTTPPasswordMgrWithDefaultRealm",
				"HTTPSHandler",
				"install_opener",
				"ProxyHandler",
				"Request",
				"urlopen",
				))
				_alias(urlerr, urllib2, (
				"HTTPError",
				"URLError",
				))

				except ImportError:
				import urllib.request
				_alias(urlreq, urllib.request, (
				"AbstractHTTPHandler",
				"addclosehook",
				"addinfourl",
				"BaseHandler",
				"build_opener",
				"FileHandler",
				"FTPHandler",
				"ftpwrapper",
				"HTTPHandler",
				"HTTPSHandler",
				"install_opener",
				"pathname2url",
				"HTTPBasicAuthHandler",
				"HTTPDigestAuthHandler",
				"ProxyHandler",
				"quote",
				"Request",
				"splitattr",
				"splitpasswd",
				"splitport",
				"splituser",
				"unquote",
				"url2pathname",
				"urlopen",
				))
				import urllib.error
				_alias(urlerr, urllib.error, (
				"HTTPError",
				"URLError",
				))

				try:
				xrange
				except NameError:
				import builtins
				builtins.xrange = range