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hgweb: do not import uuid immediately to avoid its side effect...
hgweb: do not import uuid immediately to avoid its side effect With hgdemandimport disabled (chg's case), `import uuid` has an immediate side effect calling `ctypes.util.find_library` trying to locate the `libuuid` library. This happens at `import` time before `dispatch.run()`. The call trace is like: File "hg/hg", line 54, in <module> from mercurial import ( File "hg/mercurial/dispatch.py", line 24, in <module> from . import ( File "hg/mercurial/commands.py", line 23, in <module> from . import ( File "hg/mercurial/help.py", line 33, in <module> from .hgweb import ( File "hg/mercurial/hgweb/__init__.py", line 20, in <module> from . import ( File "hg/mercurial/hgweb/hgweb_mod.py", line 14, in <module> from .common import ( File "hg/mercurial/hgweb/common.py", line 15, in <module> import uuid File "/usr/lib64/python2.7/uuid.py", line 404, in <module> lib = ctypes.CDLL(ctypes.util.find_library(libname)) The problem is, `ctypes.util.find_library` will execute `sh -c '/sbin/ldconfig -p 2>/dev/null'` on Python <= 2.7.12. The output of `sh` may pollute the terminal: shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory This patch moves `import uuid` so its side-effect can only happen after the cwd check in `dispatch._getlocal`. Therefore the terminal won't be polluted by importing `uuid`. Differential Revision: https://phab.mercurial-scm.org/D1024

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scmwindows.py
61 lines | 1.9 KiB | text/x-python | PythonLexer
from __future__ import absolute_import
import os
from . import (
encoding,
pycompat,
util,
win32,
)
try:
import _winreg as winreg
winreg.CloseKey
except ImportError:
import winreg
# MS-DOS 'more' is the only pager available by default on Windows.
fallbackpager = 'more'
def systemrcpath():
'''return default os-specific hgrc search path'''
rcpath = []
filename = util.executablepath()
# Use mercurial.ini found in directory with hg.exe
progrc = os.path.join(os.path.dirname(filename), 'mercurial.ini')
rcpath.append(progrc)
# Use hgrc.d found in directory with hg.exe
progrcd = os.path.join(os.path.dirname(filename), 'hgrc.d')
if os.path.isdir(progrcd):
for f, kind in util.listdir(progrcd):
if f.endswith('.rc'):
rcpath.append(os.path.join(progrcd, f))
# else look for a system rcpath in the registry
value = util.lookupreg('SOFTWARE\\Mercurial', None,
winreg.HKEY_LOCAL_MACHINE)
if not isinstance(value, str) or not value:
return rcpath
value = util.localpath(value)
for p in value.split(pycompat.ospathsep):
if p.lower().endswith('mercurial.ini'):
rcpath.append(p)
elif os.path.isdir(p):
for f, kind in util.listdir(p):
if f.endswith('.rc'):
rcpath.append(os.path.join(p, f))
return rcpath
def userrcpath():
'''return os-specific hgrc search path to the user dir'''
home = os.path.expanduser('~')
path = [os.path.join(home, 'mercurial.ini'),
os.path.join(home, '.hgrc')]
userprofile = encoding.environ.get('USERPROFILE')
if userprofile and userprofile != home:
path.append(os.path.join(userprofile, 'mercurial.ini'))
path.append(os.path.join(userprofile, '.hgrc'))
return path
def termsize(ui):
return win32.termsize()