mercurial/pycompat.py
author Yuya Nishihara <yuya@tcha.org>
Tue, 16 Aug 2016 12:35:15 +0900
changeset 29800 178c89e8519a
parent 29799 45fa8de47a0f
child 29801 c63ab0524db7
permissions -rw-r--r--
py3: import builtin wrappers automagically by code transformer This should be less invasive than mucking builtins. Since tokenize.untokenize() looks start/end positions of tokens, we calculates them from the NEWLINE token of the future import.
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# pycompat.py - portability shim for python 3
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""Mercurial portability shim for python 3.
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This contains aliases to hide python version-specific details from the core.
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"""
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from __future__ import absolute_import
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import sys
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if sys.version_info[0] < 3:
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    import cPickle as pickle
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    import cStringIO as io
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    import httplib
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    import Queue as _queue
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    import SocketServer as socketserver
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    import urlparse
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    import xmlrpclib
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else:
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    import http.client as httplib
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    import io
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    import pickle
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    import queue as _queue
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    import socketserver
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    import urllib.parse as urlparse
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    import xmlrpc.client as xmlrpclib
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if sys.version_info[0] >= 3:
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    import builtins
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    import functools
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    def _wrapattrfunc(f):
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        @functools.wraps(f)
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        def w(object, name, *args):
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            if isinstance(name, bytes):
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                name = name.decode(u'utf-8')
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            return f(object, name, *args)
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        return w
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    # these wrappers are automagically imported by hgloader
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    delattr = _wrapattrfunc(builtins.delattr)
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    getattr = _wrapattrfunc(builtins.getattr)
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    hasattr = _wrapattrfunc(builtins.hasattr)
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    setattr = _wrapattrfunc(builtins.setattr)
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    xrange = builtins.range
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stringio = io.StringIO
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empty = _queue.Empty
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queue = _queue.Queue
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class _pycompatstub(object):
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    pass
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def _alias(alias, origin, items):
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    """ populate a _pycompatstub
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    copies items from origin to alias
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    """
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    for item in items:
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        try:
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            lcase = item.replace('_', '').lower()
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            setattr(alias, lcase, getattr(origin, item))
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        except AttributeError:
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            pass
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httpserver = _pycompatstub()
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urlreq = _pycompatstub()
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urlerr = _pycompatstub()
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try:
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    import BaseHTTPServer
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    import CGIHTTPServer
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    import SimpleHTTPServer
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    import urllib2
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    import urllib
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    _alias(urlreq, urllib, (
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        "addclosehook",
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        "addinfourl",
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        "ftpwrapper",
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        "pathname2url",
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        "quote",
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        "splitattr",
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        "splitpasswd",
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        "splitport",
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        "splituser",
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        "unquote",
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        "url2pathname",
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        "urlencode",
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    ))
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    _alias(urlreq, urllib2, (
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        "AbstractHTTPHandler",
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        "BaseHandler",
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        "build_opener",
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        "FileHandler",
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        "FTPHandler",
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        "HTTPBasicAuthHandler",
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        "HTTPDigestAuthHandler",
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        "HTTPHandler",
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        "HTTPPasswordMgrWithDefaultRealm",
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        "HTTPSHandler",
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        "install_opener",
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        "ProxyHandler",
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        "Request",
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        "urlopen",
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    ))
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    _alias(urlerr, urllib2, (
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        "HTTPError",
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        "URLError",
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    ))
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    _alias(httpserver, BaseHTTPServer, (
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        "HTTPServer",
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        "BaseHTTPRequestHandler",
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    ))
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    _alias(httpserver, SimpleHTTPServer, (
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        "SimpleHTTPRequestHandler",
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    ))
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    _alias(httpserver, CGIHTTPServer, (
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        "CGIHTTPRequestHandler",
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    ))
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except ImportError:
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    import urllib.request
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    _alias(urlreq, urllib.request, (
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        "AbstractHTTPHandler",
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        "addclosehook",
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        "addinfourl",
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        "BaseHandler",
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        "build_opener",
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        "FileHandler",
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        "FTPHandler",
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        "ftpwrapper",
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        "HTTPHandler",
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        "HTTPSHandler",
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        "install_opener",
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        "pathname2url",
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        "HTTPBasicAuthHandler",
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        "HTTPDigestAuthHandler",
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        "HTTPPasswordMgrWithDefaultRealm",
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        "ProxyHandler",
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        "quote",
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        "Request",
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        "splitattr",
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        "splitpasswd",
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        "splitport",
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        "splituser",
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        "unquote",
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        "url2pathname",
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        "urlopen",
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    ))
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    import urllib.error
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    _alias(urlerr, urllib.error, (
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        "HTTPError",
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        "URLError",
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    ))
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    import http.server
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    _alias(httpserver, http.server, (
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        "HTTPServer",
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        "BaseHTTPRequestHandler",
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        "SimpleHTTPRequestHandler",
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        "CGIHTTPRequestHandler",
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    ))