|
|
# 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 getopt
|
|
|
import inspect
|
|
|
import os
|
|
|
import shlex
|
|
|
import sys
|
|
|
import tempfile
|
|
|
|
|
|
ispy3 = (sys.version_info[0] >= 3)
|
|
|
ispypy = (r'__pypy__' in sys.builtin_module_names)
|
|
|
|
|
|
if not ispy3:
|
|
|
import cookielib
|
|
|
import cPickle as pickle
|
|
|
import httplib
|
|
|
import Queue as queue
|
|
|
import SocketServer as socketserver
|
|
|
import xmlrpclib
|
|
|
|
|
|
from .thirdparty.concurrent import futures
|
|
|
|
|
|
def future_set_exception_info(f, exc_info):
|
|
|
f.set_exception_info(*exc_info)
|
|
|
else:
|
|
|
import concurrent.futures as futures
|
|
|
import http.cookiejar as cookielib
|
|
|
import http.client as httplib
|
|
|
import pickle
|
|
|
import queue as queue
|
|
|
import socketserver
|
|
|
import xmlrpc.client as xmlrpclib
|
|
|
|
|
|
def future_set_exception_info(f, exc_info):
|
|
|
f.set_exception(exc_info[0])
|
|
|
|
|
|
def identity(a):
|
|
|
return a
|
|
|
|
|
|
def _rapply(f, xs):
|
|
|
if xs is None:
|
|
|
# assume None means non-value of optional data
|
|
|
return xs
|
|
|
if isinstance(xs, (list, set, tuple)):
|
|
|
return type(xs)(_rapply(f, x) for x in xs)
|
|
|
if isinstance(xs, dict):
|
|
|
return type(xs)((_rapply(f, k), _rapply(f, v)) for k, v in xs.items())
|
|
|
return f(xs)
|
|
|
|
|
|
def rapply(f, xs):
|
|
|
"""Apply function recursively to every item preserving the data structure
|
|
|
|
|
|
>>> def f(x):
|
|
|
... return 'f(%s)' % x
|
|
|
>>> rapply(f, None) is None
|
|
|
True
|
|
|
>>> rapply(f, 'a')
|
|
|
'f(a)'
|
|
|
>>> rapply(f, {'a'}) == {'f(a)'}
|
|
|
True
|
|
|
>>> rapply(f, ['a', 'b', None, {'c': 'd'}, []])
|
|
|
['f(a)', 'f(b)', None, {'f(c)': 'f(d)'}, []]
|
|
|
|
|
|
>>> xs = [object()]
|
|
|
>>> rapply(identity, xs) is xs
|
|
|
True
|
|
|
"""
|
|
|
if f is identity:
|
|
|
# fast path mainly for py2
|
|
|
return xs
|
|
|
return _rapply(f, xs)
|
|
|
|
|
|
if ispy3:
|
|
|
import builtins
|
|
|
import functools
|
|
|
import io
|
|
|
import struct
|
|
|
|
|
|
fsencode = os.fsencode
|
|
|
fsdecode = os.fsdecode
|
|
|
oscurdir = os.curdir.encode('ascii')
|
|
|
oslinesep = os.linesep.encode('ascii')
|
|
|
osname = os.name.encode('ascii')
|
|
|
ospathsep = os.pathsep.encode('ascii')
|
|
|
ospardir = os.pardir.encode('ascii')
|
|
|
ossep = os.sep.encode('ascii')
|
|
|
osaltsep = os.altsep
|
|
|
if osaltsep:
|
|
|
osaltsep = osaltsep.encode('ascii')
|
|
|
|
|
|
sysplatform = sys.platform.encode('ascii')
|
|
|
sysexecutable = sys.executable
|
|
|
if sysexecutable:
|
|
|
sysexecutable = os.fsencode(sysexecutable)
|
|
|
bytesio = io.BytesIO
|
|
|
# TODO deprecate stringio name, as it is a lie on Python 3.
|
|
|
stringio = bytesio
|
|
|
|
|
|
def maplist(*args):
|
|
|
return list(map(*args))
|
|
|
|
|
|
def rangelist(*args):
|
|
|
return list(range(*args))
|
|
|
|
|
|
def ziplist(*args):
|
|
|
return list(zip(*args))
|
|
|
|
|
|
rawinput = input
|
|
|
getargspec = inspect.getfullargspec
|
|
|
|
|
|
long = int
|
|
|
|
|
|
# TODO: .buffer might not exist if std streams were replaced; we'll need
|
|
|
# a silly wrapper to make a bytes stream backed by a unicode one.
|
|
|
stdin = sys.stdin.buffer
|
|
|
stdout = sys.stdout.buffer
|
|
|
stderr = sys.stderr.buffer
|
|
|
|
|
|
# Since Python 3 converts argv to wchar_t type by Py_DecodeLocale() on Unix,
|
|
|
# we can use os.fsencode() to get back bytes argv.
|
|
|
#
|
|
|
# https://hg.python.org/cpython/file/v3.5.1/Programs/python.c#l55
|
|
|
#
|
|
|
# TODO: On Windows, the native argv is wchar_t, so we'll need a different
|
|
|
# workaround to simulate the Python 2 (i.e. ANSI Win32 API) behavior.
|
|
|
if getattr(sys, 'argv', None) is not None:
|
|
|
sysargv = list(map(os.fsencode, sys.argv))
|
|
|
|
|
|
bytechr = struct.Struct(r'>B').pack
|
|
|
byterepr = b'%r'.__mod__
|
|
|
|
|
|
class bytestr(bytes):
|
|
|
"""A bytes which mostly acts as a Python 2 str
|
|
|
|
|
|
>>> bytestr(), bytestr(bytearray(b'foo')), bytestr(u'ascii'), bytestr(1)
|
|
|
('', 'foo', 'ascii', '1')
|
|
|
>>> s = bytestr(b'foo')
|
|
|
>>> assert s is bytestr(s)
|
|
|
|
|
|
__bytes__() should be called if provided:
|
|
|
|
|
|
>>> class bytesable(object):
|
|
|
... def __bytes__(self):
|
|
|
... return b'bytes'
|
|
|
>>> bytestr(bytesable())
|
|
|
'bytes'
|
|
|
|
|
|
There's no implicit conversion from non-ascii str as its encoding is
|
|
|
unknown:
|
|
|
|
|
|
>>> bytestr(chr(0x80)) # doctest: +ELLIPSIS
|
|
|
Traceback (most recent call last):
|
|
|
...
|
|
|
UnicodeEncodeError: ...
|
|
|
|
|
|
Comparison between bytestr and bytes should work:
|
|
|
|
|
|
>>> assert bytestr(b'foo') == b'foo'
|
|
|
>>> assert b'foo' == bytestr(b'foo')
|
|
|
>>> assert b'f' in bytestr(b'foo')
|
|
|
>>> assert bytestr(b'f') in b'foo'
|
|
|
|
|
|
Sliced elements should be bytes, not integer:
|
|
|
|
|
|
>>> s[1], s[:2]
|
|
|
(b'o', b'fo')
|
|
|
>>> list(s), list(reversed(s))
|
|
|
([b'f', b'o', b'o'], [b'o', b'o', b'f'])
|
|
|
|
|
|
As bytestr type isn't propagated across operations, you need to cast
|
|
|
bytes to bytestr explicitly:
|
|
|
|
|
|
>>> s = bytestr(b'foo').upper()
|
|
|
>>> t = bytestr(s)
|
|
|
>>> s[0], t[0]
|
|
|
(70, b'F')
|
|
|
|
|
|
Be careful to not pass a bytestr object to a function which expects
|
|
|
bytearray-like behavior.
|
|
|
|
|
|
>>> t = bytes(t) # cast to bytes
|
|
|
>>> assert type(t) is bytes
|
|
|
"""
|
|
|
|
|
|
def __new__(cls, s=b''):
|
|
|
if isinstance(s, bytestr):
|
|
|
return s
|
|
|
if (not isinstance(s, (bytes, bytearray))
|
|
|
and not hasattr(s, u'__bytes__')): # hasattr-py3-only
|
|
|
s = str(s).encode(u'ascii')
|
|
|
return bytes.__new__(cls, s)
|
|
|
|
|
|
def __getitem__(self, key):
|
|
|
s = bytes.__getitem__(self, key)
|
|
|
if not isinstance(s, bytes):
|
|
|
s = bytechr(s)
|
|
|
return s
|
|
|
|
|
|
def __iter__(self):
|
|
|
return iterbytestr(bytes.__iter__(self))
|
|
|
|
|
|
def __repr__(self):
|
|
|
return bytes.__repr__(self)[1:] # drop b''
|
|
|
|
|
|
def iterbytestr(s):
|
|
|
"""Iterate bytes as if it were a str object of Python 2"""
|
|
|
return map(bytechr, s)
|
|
|
|
|
|
def maybebytestr(s):
|
|
|
"""Promote bytes to bytestr"""
|
|
|
if isinstance(s, bytes):
|
|
|
return bytestr(s)
|
|
|
return s
|
|
|
|
|
|
def sysbytes(s):
|
|
|
"""Convert an internal str (e.g. keyword, __doc__) back to bytes
|
|
|
|
|
|
This never raises UnicodeEncodeError, but only ASCII characters
|
|
|
can be round-trip by sysstr(sysbytes(s)).
|
|
|
"""
|
|
|
return s.encode(u'utf-8')
|
|
|
|
|
|
def sysstr(s):
|
|
|
"""Return a keyword str to be passed to Python functions such as
|
|
|
getattr() and str.encode()
|
|
|
|
|
|
This never raises UnicodeDecodeError. Non-ascii characters are
|
|
|
considered invalid and mapped to arbitrary but unique code points
|
|
|
such that 'sysstr(a) != sysstr(b)' for all 'a != b'.
|
|
|
"""
|
|
|
if isinstance(s, builtins.str):
|
|
|
return s
|
|
|
return s.decode(u'latin-1')
|
|
|
|
|
|
def strurl(url):
|
|
|
"""Converts a bytes url back to str"""
|
|
|
if isinstance(url, bytes):
|
|
|
return url.decode(u'ascii')
|
|
|
return url
|
|
|
|
|
|
def bytesurl(url):
|
|
|
"""Converts a str url to bytes by encoding in ascii"""
|
|
|
if isinstance(url, str):
|
|
|
return url.encode(u'ascii')
|
|
|
return url
|
|
|
|
|
|
def raisewithtb(exc, tb):
|
|
|
"""Raise exception with the given traceback"""
|
|
|
raise exc.with_traceback(tb)
|
|
|
|
|
|
def getdoc(obj):
|
|
|
"""Get docstring as bytes; may be None so gettext() won't confuse it
|
|
|
with _('')"""
|
|
|
doc = getattr(obj, u'__doc__', None)
|
|
|
if doc is None:
|
|
|
return doc
|
|
|
return sysbytes(doc)
|
|
|
|
|
|
def _wrapattrfunc(f):
|
|
|
@functools.wraps(f)
|
|
|
def w(object, name, *args):
|
|
|
return f(object, sysstr(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
|
|
|
unicode = str
|
|
|
|
|
|
def open(name, mode=b'r', buffering=-1, encoding=None):
|
|
|
return builtins.open(name, sysstr(mode), buffering, encoding)
|
|
|
|
|
|
safehasattr = _wrapattrfunc(builtins.hasattr)
|
|
|
|
|
|
def _getoptbwrapper(orig, args, shortlist, namelist):
|
|
|
"""
|
|
|
Takes bytes arguments, converts them to unicode, pass them to
|
|
|
getopt.getopt(), convert the returned values back to bytes and then
|
|
|
return them for Python 3 compatibility as getopt.getopt() don't accepts
|
|
|
bytes on Python 3.
|
|
|
"""
|
|
|
args = [a.decode('latin-1') for a in args]
|
|
|
shortlist = shortlist.decode('latin-1')
|
|
|
namelist = [a.decode('latin-1') for a in namelist]
|
|
|
opts, args = orig(args, shortlist, namelist)
|
|
|
opts = [(a[0].encode('latin-1'), a[1].encode('latin-1'))
|
|
|
for a in opts]
|
|
|
args = [a.encode('latin-1') for a in args]
|
|
|
return opts, args
|
|
|
|
|
|
def strkwargs(dic):
|
|
|
"""
|
|
|
Converts the keys of a python dictonary to str i.e. unicodes so that
|
|
|
they can be passed as keyword arguments as dictonaries with bytes keys
|
|
|
can't be passed as keyword arguments to functions on Python 3.
|
|
|
"""
|
|
|
dic = dict((k.decode('latin-1'), v) for k, v in dic.iteritems())
|
|
|
return dic
|
|
|
|
|
|
def byteskwargs(dic):
|
|
|
"""
|
|
|
Converts keys of python dictonaries to bytes as they were converted to
|
|
|
str to pass that dictonary as a keyword argument on Python 3.
|
|
|
"""
|
|
|
dic = dict((k.encode('latin-1'), v) for k, v in dic.iteritems())
|
|
|
return dic
|
|
|
|
|
|
# TODO: handle shlex.shlex().
|
|
|
def shlexsplit(s, comments=False, posix=True):
|
|
|
"""
|
|
|
Takes bytes argument, convert it to str i.e. unicodes, pass that into
|
|
|
shlex.split(), convert the returned value to bytes and return that for
|
|
|
Python 3 compatibility as shelx.split() don't accept bytes on Python 3.
|
|
|
"""
|
|
|
ret = shlex.split(s.decode('latin-1'), comments, posix)
|
|
|
return [a.encode('latin-1') for a in ret]
|
|
|
|
|
|
else:
|
|
|
import cStringIO
|
|
|
|
|
|
xrange = xrange
|
|
|
unicode = unicode
|
|
|
bytechr = chr
|
|
|
byterepr = repr
|
|
|
bytestr = str
|
|
|
iterbytestr = iter
|
|
|
maybebytestr = identity
|
|
|
sysbytes = identity
|
|
|
sysstr = identity
|
|
|
strurl = identity
|
|
|
bytesurl = identity
|
|
|
|
|
|
# this can't be parsed on Python 3
|
|
|
exec('def raisewithtb(exc, tb):\n'
|
|
|
' raise exc, None, tb\n')
|
|
|
|
|
|
def fsencode(filename):
|
|
|
"""
|
|
|
Partial backport from os.py in Python 3, which only accepts bytes.
|
|
|
In Python 2, our paths should only ever be bytes, a unicode path
|
|
|
indicates a bug.
|
|
|
"""
|
|
|
if isinstance(filename, str):
|
|
|
return filename
|
|
|
else:
|
|
|
raise TypeError(
|
|
|
r"expect str, not %s" % type(filename).__name__)
|
|
|
|
|
|
# In Python 2, fsdecode() has a very chance to receive bytes. So it's
|
|
|
# better not to touch Python 2 part as it's already working fine.
|
|
|
fsdecode = identity
|
|
|
|
|
|
def getdoc(obj):
|
|
|
return getattr(obj, '__doc__', None)
|
|
|
|
|
|
_notset = object()
|
|
|
|
|
|
def safehasattr(thing, attr):
|
|
|
return getattr(thing, attr, _notset) is not _notset
|
|
|
|
|
|
def _getoptbwrapper(orig, args, shortlist, namelist):
|
|
|
return orig(args, shortlist, namelist)
|
|
|
|
|
|
strkwargs = identity
|
|
|
byteskwargs = identity
|
|
|
|
|
|
oscurdir = os.curdir
|
|
|
oslinesep = os.linesep
|
|
|
osname = os.name
|
|
|
ospathsep = os.pathsep
|
|
|
ospardir = os.pardir
|
|
|
ossep = os.sep
|
|
|
osaltsep = os.altsep
|
|
|
long = long
|
|
|
stdin = sys.stdin
|
|
|
stdout = sys.stdout
|
|
|
stderr = sys.stderr
|
|
|
if getattr(sys, 'argv', None) is not None:
|
|
|
sysargv = sys.argv
|
|
|
sysplatform = sys.platform
|
|
|
sysexecutable = sys.executable
|
|
|
shlexsplit = shlex.split
|
|
|
bytesio = cStringIO.StringIO
|
|
|
stringio = bytesio
|
|
|
maplist = map
|
|
|
rangelist = range
|
|
|
ziplist = zip
|
|
|
rawinput = raw_input
|
|
|
getargspec = inspect.getargspec
|
|
|
|
|
|
isjython = sysplatform.startswith(b'java')
|
|
|
|
|
|
isdarwin = sysplatform.startswith(b'darwin')
|
|
|
islinux = sysplatform.startswith(b'linux')
|
|
|
isposix = osname == b'posix'
|
|
|
iswindows = osname == b'nt'
|
|
|
|
|
|
def getoptb(args, shortlist, namelist):
|
|
|
return _getoptbwrapper(getopt.getopt, args, shortlist, namelist)
|
|
|
|
|
|
def gnugetoptb(args, shortlist, namelist):
|
|
|
return _getoptbwrapper(getopt.gnu_getopt, args, shortlist, namelist)
|
|
|
|
|
|
def mkdtemp(suffix=b'', prefix=b'tmp', dir=None):
|
|
|
return tempfile.mkdtemp(suffix, prefix, dir)
|
|
|
|
|
|
# text=True is not supported; use util.from/tonativeeol() instead
|
|
|
def mkstemp(suffix=b'', prefix=b'tmp', dir=None):
|
|
|
return tempfile.mkstemp(suffix, prefix, dir)
|
|
|
|
|
|
# mode must include 'b'ytes as encoding= is not supported
|
|
|
def namedtempfile(mode=b'w+b', bufsize=-1, suffix=b'', prefix=b'tmp', dir=None,
|
|
|
delete=True):
|
|
|
mode = sysstr(mode)
|
|
|
assert r'b' in mode
|
|
|
return tempfile.NamedTemporaryFile(mode, bufsize, suffix=suffix,
|
|
|
prefix=prefix, dir=dir, delete=delete)
|
|
|
|
