contrib: install Python 3.9.0
We update the Windows and Linux environments to install CPython 3.9.0,
which was released a few days ago.
Differential Revision: https://phab.mercurial-scm.org/D9186
# windows.py - Windows utility function implementations for Mercurial
#
# Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
import errno
import getpass
import msvcrt
import os
import re
import stat
import string
import sys
from .i18n import _
from .pycompat import getattr
from . import (
encoding,
error,
policy,
pycompat,
win32,
)
try:
import _winreg as winreg # pytype: disable=import-error
winreg.CloseKey
except ImportError:
# py2 only
import winreg # pytype: disable=import-error
osutil = policy.importmod('osutil')
getfsmountpoint = win32.getvolumename
getfstype = win32.getfstype
getuser = win32.getuser
hidewindow = win32.hidewindow
makedir = win32.makedir
nlinks = win32.nlinks
oslink = win32.oslink
samedevice = win32.samedevice
samefile = win32.samefile
setsignalhandler = win32.setsignalhandler
spawndetached = win32.spawndetached
split = os.path.split
testpid = win32.testpid
unlink = win32.unlink
umask = 0o022
class mixedfilemodewrapper(object):
"""Wraps a file handle when it is opened in read/write mode.
fopen() and fdopen() on Windows have a specific-to-Windows requirement
that files opened with mode r+, w+, or a+ make a call to a file positioning
function when switching between reads and writes. Without this extra call,
Python will raise a not very intuitive "IOError: [Errno 0] Error."
This class wraps posixfile instances when the file is opened in read/write
mode and automatically adds checks or inserts appropriate file positioning
calls when necessary.
"""
OPNONE = 0
OPREAD = 1
OPWRITE = 2
def __init__(self, fp):
object.__setattr__(self, '_fp', fp)
object.__setattr__(self, '_lastop', 0)
def __enter__(self):
self._fp.__enter__()
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self._fp.__exit__(exc_type, exc_val, exc_tb)
def __getattr__(self, name):
return getattr(self._fp, name)
def __setattr__(self, name, value):
return self._fp.__setattr__(name, value)
def _noopseek(self):
self._fp.seek(0, os.SEEK_CUR)
def seek(self, *args, **kwargs):
object.__setattr__(self, '_lastop', self.OPNONE)
return self._fp.seek(*args, **kwargs)
def write(self, d):
if self._lastop == self.OPREAD:
self._noopseek()
object.__setattr__(self, '_lastop', self.OPWRITE)
return self._fp.write(d)
def writelines(self, *args, **kwargs):
if self._lastop == self.OPREAD:
self._noopeseek()
object.__setattr__(self, '_lastop', self.OPWRITE)
return self._fp.writelines(*args, **kwargs)
def read(self, *args, **kwargs):
if self._lastop == self.OPWRITE:
self._noopseek()
object.__setattr__(self, '_lastop', self.OPREAD)
return self._fp.read(*args, **kwargs)
def readline(self, *args, **kwargs):
if self._lastop == self.OPWRITE:
self._noopseek()
object.__setattr__(self, '_lastop', self.OPREAD)
return self._fp.readline(*args, **kwargs)
def readlines(self, *args, **kwargs):
if self._lastop == self.OPWRITE:
self._noopseek()
object.__setattr__(self, '_lastop', self.OPREAD)
return self._fp.readlines(*args, **kwargs)
class fdproxy(object):
"""Wraps osutil.posixfile() to override the name attribute to reflect the
underlying file name.
"""
def __init__(self, name, fp):
self.name = name
self._fp = fp
def __enter__(self):
self._fp.__enter__()
# Return this wrapper for the context manager so that the name is
# still available.
return self
def __exit__(self, exc_type, exc_value, traceback):
self._fp.__exit__(exc_type, exc_value, traceback)
def __iter__(self):
return iter(self._fp)
def __getattr__(self, name):
return getattr(self._fp, name)
def posixfile(name, mode=b'r', buffering=-1):
'''Open a file with even more POSIX-like semantics'''
try:
fp = osutil.posixfile(name, mode, buffering) # may raise WindowsError
# PyFile_FromFd() ignores the name, and seems to report fp.name as the
# underlying file descriptor.
if pycompat.ispy3:
fp = fdproxy(name, fp)
# The position when opening in append mode is implementation defined, so
# make it consistent with other platforms, which position at EOF.
if b'a' in mode:
fp.seek(0, os.SEEK_END)
if b'+' in mode:
return mixedfilemodewrapper(fp)
return fp
except WindowsError as err:
# convert to a friendlier exception
raise IOError(
err.errno, '%s: %s' % (encoding.strfromlocal(name), err.strerror)
)
# may be wrapped by win32mbcs extension
listdir = osutil.listdir
# copied from .utils.procutil, remove after Python 2 support was dropped
def _isatty(fp):
try:
return fp.isatty()
except AttributeError:
return False
class winstdout(object):
'''Some files on Windows misbehave.
When writing to a broken pipe, EINVAL instead of EPIPE may be raised.
When writing too many bytes to a console at the same, a "Not enough space"
error may happen. Python 3 already works around that.
'''
def __init__(self, fp):
self.fp = fp
self.throttle = not pycompat.ispy3 and _isatty(fp)
def __getattr__(self, key):
return getattr(self.fp, key)
def close(self):
try:
self.fp.close()
except IOError:
pass
def write(self, s):
try:
if not self.throttle:
return self.fp.write(s)
# This is workaround for "Not enough space" error on
# writing large size of data to console.
limit = 16000
l = len(s)
start = 0
while start < l:
end = start + limit
self.fp.write(s[start:end])
start = end
except IOError as inst:
if inst.errno != 0 and not win32.lasterrorwaspipeerror(inst):
raise
self.close()
raise IOError(errno.EPIPE, 'Broken pipe')
def flush(self):
try:
return self.fp.flush()
except IOError as inst:
if not win32.lasterrorwaspipeerror(inst):
raise
raise IOError(errno.EPIPE, 'Broken pipe')
def openhardlinks():
return True
def parsepatchoutput(output_line):
"""parses the output produced by patch and returns the filename"""
pf = output_line[14:]
if pf[0] == b'`':
pf = pf[1:-1] # Remove the quotes
return pf
def sshargs(sshcmd, host, user, port):
'''Build argument list for ssh or Plink'''
pflag = b'plink' in sshcmd.lower() and b'-P' or b'-p'
args = user and (b"%s@%s" % (user, host)) or host
if args.startswith(b'-') or args.startswith(b'/'):
raise error.Abort(
_(b'illegal ssh hostname or username starting with - or /: %s')
% args
)
args = shellquote(args)
if port:
args = b'%s %s %s' % (pflag, shellquote(port), args)
return args
def setflags(f, l, x):
pass
def copymode(src, dst, mode=None, enforcewritable=False):
pass
def checkexec(path):
return False
def checklink(path):
return False
def setbinary(fd):
# When run without console, pipes may expose invalid
# fileno(), usually set to -1.
fno = getattr(fd, 'fileno', None)
if fno is not None and fno() >= 0:
msvcrt.setmode(fno(), os.O_BINARY) # pytype: disable=module-attr
def pconvert(path):
return path.replace(pycompat.ossep, b'/')
def localpath(path):
return path.replace(b'/', b'\\')
def normpath(path):
return pconvert(os.path.normpath(path))
def normcase(path):
return encoding.upper(path) # NTFS compares via upper()
# see posix.py for definitions
normcasespec = encoding.normcasespecs.upper
normcasefallback = encoding.upperfallback
def samestat(s1, s2):
return False
def shelltocmdexe(path, env):
r"""Convert shell variables in the form $var and ${var} inside ``path``
to %var% form. Existing Windows style variables are left unchanged.
The variables are limited to the given environment. Unknown variables are
left unchanged.
>>> e = {b'var1': b'v1', b'var2': b'v2', b'var3': b'v3'}
>>> # Only valid values are expanded
>>> shelltocmdexe(b'cmd $var1 ${var2} %var3% $missing ${missing} %missing%',
... e)
'cmd %var1% %var2% %var3% $missing ${missing} %missing%'
>>> # Single quote prevents expansion, as does \$ escaping
>>> shelltocmdexe(b"cmd '$var1 ${var2} %var3%' \$var1 \${var2} \\", e)
'cmd "$var1 ${var2} %var3%" $var1 ${var2} \\'
>>> # $$ is not special. %% is not special either, but can be the end and
>>> # start of consecutive variables
>>> shelltocmdexe(b"cmd $$ %% %var1%%var2%", e)
'cmd $$ %% %var1%%var2%'
>>> # No double substitution
>>> shelltocmdexe(b"$var1 %var1%", {b'var1': b'%var2%', b'var2': b'boom'})
'%var1% %var1%'
>>> # Tilde expansion
>>> shelltocmdexe(b"~/dir ~\dir2 ~tmpfile \~/", {})
'%USERPROFILE%/dir %USERPROFILE%\\dir2 ~tmpfile ~/'
"""
if not any(c in path for c in b"$'~"):
return path
varchars = pycompat.sysbytes(string.ascii_letters + string.digits) + b'_-'
res = b''
index = 0
pathlen = len(path)
while index < pathlen:
c = path[index : index + 1]
if c == b'\'': # no expansion within single quotes
path = path[index + 1 :]
pathlen = len(path)
try:
index = path.index(b'\'')
res += b'"' + path[:index] + b'"'
except ValueError:
res += c + path
index = pathlen - 1
elif c == b'%': # variable
path = path[index + 1 :]
pathlen = len(path)
try:
index = path.index(b'%')
except ValueError:
res += b'%' + path
index = pathlen - 1
else:
var = path[:index]
res += b'%' + var + b'%'
elif c == b'$': # variable
if path[index + 1 : index + 2] == b'{':
path = path[index + 2 :]
pathlen = len(path)
try:
index = path.index(b'}')
var = path[:index]
# See below for why empty variables are handled specially
if env.get(var, b'') != b'':
res += b'%' + var + b'%'
else:
res += b'${' + var + b'}'
except ValueError:
res += b'${' + path
index = pathlen - 1
else:
var = b''
index += 1
c = path[index : index + 1]
while c != b'' and c in varchars:
var += c
index += 1
c = path[index : index + 1]
# Some variables (like HG_OLDNODE) may be defined, but have an
# empty value. Those need to be skipped because when spawning
# cmd.exe to run the hook, it doesn't replace %VAR% for an empty
# VAR, and that really confuses things like revset expressions.
# OTOH, if it's left in Unix format and the hook runs sh.exe, it
# will substitute to an empty string, and everything is happy.
if env.get(var, b'') != b'':
res += b'%' + var + b'%'
else:
res += b'$' + var
if c != b'':
index -= 1
elif (
c == b'~'
and index + 1 < pathlen
and path[index + 1 : index + 2] in (b'\\', b'/')
):
res += b"%USERPROFILE%"
elif (
c == b'\\'
and index + 1 < pathlen
and path[index + 1 : index + 2] in (b'$', b'~')
):
# Skip '\', but only if it is escaping $ or ~
res += path[index + 1 : index + 2]
index += 1
else:
res += c
index += 1
return res
# A sequence of backslashes is special iff it precedes a double quote:
# - if there's an even number of backslashes, the double quote is not
# quoted (i.e. it ends the quoted region)
# - if there's an odd number of backslashes, the double quote is quoted
# - in both cases, every pair of backslashes is unquoted into a single
# backslash
# (See http://msdn2.microsoft.com/en-us/library/a1y7w461.aspx )
# So, to quote a string, we must surround it in double quotes, double
# the number of backslashes that precede double quotes and add another
# backslash before every double quote (being careful with the double
# quote we've appended to the end)
_quotere = None
_needsshellquote = None
def shellquote(s):
r"""
>>> shellquote(br'C:\Users\xyz')
'"C:\\Users\\xyz"'
>>> shellquote(br'C:\Users\xyz/mixed')
'"C:\\Users\\xyz/mixed"'
>>> # Would be safe not to quote too, since it is all double backslashes
>>> shellquote(br'C:\\Users\\xyz')
'"C:\\\\Users\\\\xyz"'
>>> # But this must be quoted
>>> shellquote(br'C:\\Users\\xyz/abc')
'"C:\\\\Users\\\\xyz/abc"'
"""
global _quotere
if _quotere is None:
_quotere = re.compile(br'(\\*)("|\\$)')
global _needsshellquote
if _needsshellquote is None:
# ":" is also treated as "safe character", because it is used as a part
# of path name on Windows. "\" is also part of a path name, but isn't
# safe because shlex.split() (kind of) treats it as an escape char and
# drops it. It will leave the next character, even if it is another
# "\".
_needsshellquote = re.compile(br'[^a-zA-Z0-9._:/-]').search
if s and not _needsshellquote(s) and not _quotere.search(s):
# "s" shouldn't have to be quoted
return s
return b'"%s"' % _quotere.sub(br'\1\1\\\2', s)
def _unquote(s):
if s.startswith(b'"') and s.endswith(b'"'):
return s[1:-1]
return s
def shellsplit(s):
"""Parse a command string in cmd.exe way (best-effort)"""
return pycompat.maplist(_unquote, pycompat.shlexsplit(s, posix=False))
# if you change this stub into a real check, please try to implement the
# username and groupname functions above, too.
def isowner(st):
return True
def findexe(command):
'''Find executable for command searching like cmd.exe does.
If command is a basename then PATH is searched for command.
PATH isn't searched if command is an absolute or relative path.
An extension from PATHEXT is found and added if not present.
If command isn't found None is returned.'''
pathext = encoding.environ.get(b'PATHEXT', b'.COM;.EXE;.BAT;.CMD')
pathexts = [ext for ext in pathext.lower().split(pycompat.ospathsep)]
if os.path.splitext(command)[1].lower() in pathexts:
pathexts = [b'']
def findexisting(pathcommand):
"""Will append extension (if needed) and return existing file"""
for ext in pathexts:
executable = pathcommand + ext
if os.path.exists(executable):
return executable
return None
if pycompat.ossep in command:
return findexisting(command)
for path in encoding.environ.get(b'PATH', b'').split(pycompat.ospathsep):
executable = findexisting(os.path.join(path, command))
if executable is not None:
return executable
return findexisting(os.path.expanduser(os.path.expandvars(command)))
_wantedkinds = {stat.S_IFREG, stat.S_IFLNK}
def statfiles(files):
'''Stat each file in files. Yield each stat, or None if a file
does not exist or has a type we don't care about.
Cluster and cache stat per directory to minimize number of OS stat calls.'''
dircache = {} # dirname -> filename -> status | None if file does not exist
getkind = stat.S_IFMT
for nf in files:
nf = normcase(nf)
dir, base = os.path.split(nf)
if not dir:
dir = b'.'
cache = dircache.get(dir, None)
if cache is None:
try:
dmap = {
normcase(n): s
for n, k, s in listdir(dir, True)
if getkind(s.st_mode) in _wantedkinds
}
except OSError as err:
# Python >= 2.5 returns ENOENT and adds winerror field
# EINVAL is raised if dir is not a directory.
if err.errno not in (errno.ENOENT, errno.EINVAL, errno.ENOTDIR):
raise
dmap = {}
cache = dircache.setdefault(dir, dmap)
yield cache.get(base, None)
def username(uid=None):
"""Return the name of the user with the given uid.
If uid is None, return the name of the current user."""
if not uid:
return pycompat.fsencode(getpass.getuser())
return None
def groupname(gid=None):
"""Return the name of the group with the given gid.
If gid is None, return the name of the current group."""
return None
def readlink(pathname):
return pycompat.fsencode(os.readlink(pycompat.fsdecode(pathname)))
def removedirs(name):
"""special version of os.removedirs that does not remove symlinked
directories or junction points if they actually contain files"""
if listdir(name):
return
os.rmdir(name)
head, tail = os.path.split(name)
if not tail:
head, tail = os.path.split(head)
while head and tail:
try:
if listdir(head):
return
os.rmdir(head)
except (ValueError, OSError):
break
head, tail = os.path.split(head)
def rename(src, dst):
'''atomically rename file src to dst, replacing dst if it exists'''
try:
os.rename(src, dst)
except OSError as e:
if e.errno != errno.EEXIST:
raise
unlink(dst)
os.rename(src, dst)
def gethgcmd():
return [encoding.strtolocal(arg) for arg in [sys.executable] + sys.argv[:1]]
def groupmembers(name):
# Don't support groups on Windows for now
raise KeyError
def isexec(f):
return False
class cachestat(object):
def __init__(self, path):
pass
def cacheable(self):
return False
def lookupreg(key, valname=None, scope=None):
''' Look up a key/value name in the Windows registry.
valname: value name. If unspecified, the default value for the key
is used.
scope: optionally specify scope for registry lookup, this can be
a sequence of scopes to look up in order. Default (CURRENT_USER,
LOCAL_MACHINE).
'''
if scope is None:
scope = (winreg.HKEY_CURRENT_USER, winreg.HKEY_LOCAL_MACHINE)
elif not isinstance(scope, (list, tuple)):
scope = (scope,)
for s in scope:
try:
with winreg.OpenKey(s, encoding.strfromlocal(key)) as hkey:
name = valname and encoding.strfromlocal(valname) or valname
val = winreg.QueryValueEx(hkey, name)[0]
# never let a Unicode string escape into the wild
return encoding.unitolocal(val)
except EnvironmentError:
pass
expandglobs = True
def statislink(st):
'''check whether a stat result is a symlink'''
return False
def statisexec(st):
'''check whether a stat result is an executable file'''
return False
def poll(fds):
# see posix.py for description
raise NotImplementedError()
def readpipe(pipe):
"""Read all available data from a pipe."""
chunks = []
while True:
size = win32.peekpipe(pipe)
if not size:
break
s = pipe.read(size)
if not s:
break
chunks.append(s)
return b''.join(chunks)
def bindunixsocket(sock, path):
raise NotImplementedError('unsupported platform')