# 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

import sys

    import cPickle as pickle

    import cStringIO as io

    import httplib

    import Queue as _queue

    import SocketServer as socketserver

    import urlparse

    import xmlrpclib

else:

    import http.client as httplib

    import io

    import pickle

    import queue as _queue

    import socketserver

    import urllib.parse as urlparse

    import xmlrpc.client as xmlrpclib

    import builtins

    import functools

    def _wrapattrfunc(f):

        @functools.wraps(f)

        def w(object, name, *args):

            if isinstance(name, bytes):

                name = name.decode(u'utf-8')

            return f(object, name, *args)

        return w

    # these wrappers are automagically imported by hgloader

    delattr = _wrapattrfunc(builtins.delattr)

    getattr = _wrapattrfunc(builtins.getattr)

    hasattr = _wrapattrfunc(builtins.hasattr)

    setattr = _wrapattrfunc(builtins.setattr)

    xrange = builtins.range

stringio = io.StringIO

empty = _queue.Empty

queue = _queue.Queue

class _pycompatstub(object):

    def __init__(self):

        self._aliases = {}

    def _registeraliases(self, origin, items):

        """Add items that will be populated at the first access"""

        self._aliases.update((item.replace('_', '').lower(), (origin, item))

                             for item in items)

    def __getattr__(self, name):

        try:

            origin, item = self._aliases[name]

        except KeyError:

            raise AttributeError(name)

        self.__dict__[name] = obj = getattr(origin, item)

        return obj

httpserver = _pycompatstub()

urlreq = _pycompatstub()

urlerr = _pycompatstub()

    import BaseHTTPServer

    import CGIHTTPServer

    import SimpleHTTPServer

    import urllib2

    import urllib

    urlreq._registeraliases(urllib, (

        "addclosehook",

        "addinfourl",

        "ftpwrapper",

        "pathname2url",

        "quote",

        "splitattr",

        "splitpasswd",

        "splitport",

        "splituser",

        "unquote",

        "url2pathname",

        "urlencode",

    ))

    urlreq._registeraliases(urllib2, (

        "AbstractHTTPHandler",

        "BaseHandler",

        "build_opener",

        "FileHandler",

        "FTPHandler",

        "HTTPBasicAuthHandler",

        "HTTPDigestAuthHandler",

        "HTTPHandler",

        "HTTPPasswordMgrWithDefaultRealm",

        "HTTPSHandler",

        "install_opener",

        "ProxyHandler",

        "Request",

        "urlopen",

    ))

    urlerr._registeraliases(urllib2, (

        "HTTPError",

        "URLError",

    ))

    httpserver._registeraliases(BaseHTTPServer, (

        "HTTPServer",

        "BaseHTTPRequestHandler",

    ))

    httpserver._registeraliases(SimpleHTTPServer, (

        "SimpleHTTPRequestHandler",

    ))

    httpserver._registeraliases(CGIHTTPServer, (

        "CGIHTTPRequestHandler",

    ))

else:

    import urllib.request

    urlreq._registeraliases(urllib.request, (

        "AbstractHTTPHandler",

        "addclosehook",

        "addinfourl",

        "BaseHandler",

        "build_opener",

        "FileHandler",

        "FTPHandler",

        "ftpwrapper",

        "HTTPHandler",

        "HTTPSHandler",

        "install_opener",

        "pathname2url",

        "HTTPBasicAuthHandler",

        "HTTPDigestAuthHandler",

        "HTTPPasswordMgrWithDefaultRealm",

        "ProxyHandler",

        "quote",

        "Request",

        "splitattr",

        "splitpasswd",

        "splitport",

        "splituser",

        "unquote",

        "url2pathname",

        "urlopen",

    ))

    import urllib.error

    urlerr._registeraliases(urllib.error, (

        "HTTPError",

        "URLError",

    ))

    import http.server

    httpserver._registeraliases(http.server, (

        "HTTPServer",

        "BaseHTTPRequestHandler",

        "SimpleHTTPRequestHandler",

        "CGIHTTPRequestHandler",

    ))