contrib: add a hint if the Windows dependency MSI is already installed
In the past, I've gotten confused when the script failed on seemingly random
python installs (and thus the py3.8 install was commented out from the last time
this happened to me, which has been reverted here). This particular error code
means the package was already installed. For python, it means the major and
minor version are the same, but the micro version may differ.
In practice, ignoring the python installation failure will cause the pip
installation that happens next to fail, because python.exe for that version is
somewhere else on the system. This could probably be fixed by running py.exe
with the major and minor version, but that is skipped during the install for
some reason. I didn't feel like over complicating this though, and at least
there's a better hint when the problem occurs.
Differential Revision: https://phab.mercurial-scm.org/D12560
# i18n.py - internationalization support for mercurial
#
# Copyright 2005, 2006 Olivia Mackall <olivia@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import gettext as gettextmod
import locale
import os
import sys
from .pycompat import getattr
from .utils import resourceutil
from . import (
encoding,
pycompat,
)
if pycompat.TYPE_CHECKING:
from typing import (
Callable,
List,
)
# modelled after templater.templatepath:
if getattr(sys, 'frozen', None) is not None:
module = pycompat.sysexecutable
else:
module = pycompat.fsencode(__file__)
_languages = None
if (
pycompat.iswindows
and b'LANGUAGE' not in encoding.environ
and b'LC_ALL' not in encoding.environ
and b'LC_MESSAGES' not in encoding.environ
and b'LANG' not in encoding.environ
):
# Try to detect UI language by "User Interface Language Management" API
# if no locale variables are set. Note that locale.getdefaultlocale()
# uses GetLocaleInfo(), which may be different from UI language.
# (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx )
try:
import ctypes
# pytype: disable=module-attr
langid = ctypes.windll.kernel32.GetUserDefaultUILanguage()
# pytype: enable=module-attr
_languages = [locale.windows_locale[langid]]
except (ImportError, AttributeError, KeyError):
# ctypes not found or unknown langid
pass
datapath = pycompat.fsdecode(resourceutil.datapath)
localedir = os.path.join(datapath, 'locale')
t = gettextmod.translation('hg', localedir, _languages, fallback=True)
try:
_ugettext = t.ugettext # pytype: disable=attribute-error
except AttributeError:
_ugettext = t.gettext
_msgcache = {} # encoding: {message: translation}
def gettext(message):
# type: (bytes) -> bytes
"""Translate message.
The message is looked up in the catalog to get a Unicode string,
which is encoded in the local encoding before being returned.
Important: message is restricted to characters in the encoding
given by sys.getdefaultencoding() which is most likely 'ascii'.
"""
# If message is None, t.ugettext will return u'None' as the
# translation whereas our callers expect us to return None.
if message is None or not _ugettext:
return message
cache = _msgcache.setdefault(encoding.encoding, {})
if message not in cache:
if type(message) is str:
# goofy unicode docstrings in test
paragraphs = message.split(u'\n\n') # type: List[str]
else:
# should be ascii, but we have unicode docstrings in test, which
# are converted to utf-8 bytes on Python 3.
paragraphs = [p.decode("utf-8") for p in message.split(b'\n\n')]
# Be careful not to translate the empty string -- it holds the
# meta data of the .po file.
u = u'\n\n'.join([p and _ugettext(p) or u'' for p in paragraphs])
try:
# encoding.tolocal cannot be used since it will first try to
# decode the Unicode string. Calling u.decode(enc) really
# means u.encode(sys.getdefaultencoding()).decode(enc). Since
# the Python encoding defaults to 'ascii', this fails if the
# translated string use non-ASCII characters.
encodingstr = pycompat.sysstr(encoding.encoding)
cache[message] = u.encode(encodingstr, "replace")
except LookupError:
# An unknown encoding results in a LookupError.
cache[message] = message
return cache[message]
def _plain():
if (
b'HGPLAIN' not in encoding.environ
and b'HGPLAINEXCEPT' not in encoding.environ
):
return False
exceptions = encoding.environ.get(b'HGPLAINEXCEPT', b'').strip().split(b',')
return b'i18n' not in exceptions
if _plain():
_ = lambda message: message # type: Callable[[bytes], bytes]
else:
_ = gettext