mercurial/scmwindows.py

subrepo: fix a crash when archiving an svn or git subrepo

Only hgsubrepos have a repository attribute.  This is pretty hacky, but probably
the best we can do on stable.  Pushing the lfstatus check down into the wrapper
for hgsubrepo (and dropping the check for lfstatus at the top of
`hgsubrepoarchive()`) resulted in various test failures because:

  1) hgsubrepoarchive isn't returning the number of files archived at the
     bottom, resulting in an error about += NoneType
  2) These copypasta archive wrappers don't use progress bars
  3) Largefiles are *not* currently archived when using extdiff (68822b7cdd01),
     but pushing this context manager down into the subrepo resulted in it
     apparently doing so (as evidenced by progress bars being dropped)

The other uses of `lfstatus()` are not in the substate processing loop, so they
shouldn't be an issue.

I initially put testcases in this test for largefiles-{on,off}, and it flagged
a bunch of exit code differences for `cat` and `diff`, so I backed that off.

Differential Revision: https://phab.mercurial-scm.org/D7714

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 = b'more'


def systemrcpath():
    '''return default os-specific hgrc search path'''
    rcpath = []
    filename = win32.executablepath()
    # Use mercurial.ini found in directory with hg.exe
    progrc = os.path.join(os.path.dirname(filename), b'mercurial.ini')
    rcpath.append(progrc)
    # Use hgrc.d found in directory with hg.exe
    progrcd = os.path.join(os.path.dirname(filename), b'hgrc.d')
    if os.path.isdir(progrcd):
        for f, kind in util.listdir(progrcd):
            if f.endswith(b'.rc'):
                rcpath.append(os.path.join(progrcd, f))
    # else look for a system rcpath in the registry
    value = util.lookupreg(
        b'SOFTWARE\\Mercurial', None, winreg.HKEY_LOCAL_MACHINE
    )
    if not isinstance(value, bytes) or not value:
        return rcpath
    value = util.localpath(value)
    for p in value.split(pycompat.ospathsep):
        if p.lower().endswith(b'mercurial.ini'):
            rcpath.append(p)
        elif os.path.isdir(p):
            for f, kind in util.listdir(p):
                if f.endswith(b'.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(b'~')
    path = [os.path.join(home, b'mercurial.ini'), os.path.join(home, b'.hgrc')]
    userprofile = encoding.environ.get(b'USERPROFILE')
    if userprofile and userprofile != home:
        path.append(os.path.join(userprofile, b'mercurial.ini'))
        path.append(os.path.join(userprofile, b'.hgrc'))
    return path


def termsize(ui):
    return win32.termsize()