pycompat: make pycompat demandimport friendly
pycompat.py includes hack to import modules whose names are changed in Python 3.
We use try-except to load module according to the version of python. But this
method forces us to import the modules to raise an ImportError and hence making
it demandimport unfriendly.
This patch changes the try-except blocks to a single if-else block. To avoid
test-check-pyflakes.t complain about unused imports, pycompat.py is excluded
from the test.
# extension to emulate invoking 'dirstate.write()' at the time
# specified by '[fakedirstatewritetime] fakenow', only when
# 'dirstate.write()' is invoked via functions below:
#
# - 'workingctx._checklookup()' (= 'repo.status()')
# - 'committablectx.markcommitted()'
from __future__ import absolute_import
from mercurial import (
context,
dirstate,
extensions,
parsers,
util,
)
def pack_dirstate(fakenow, orig, dmap, copymap, pl, now):
# execute what original parsers.pack_dirstate should do actually
# for consistency
actualnow = int(now)
for f, e in dmap.iteritems():
if e[0] == 'n' and e[3] == actualnow:
e = parsers.dirstatetuple(e[0], e[1], e[2], -1)
dmap[f] = e
return orig(dmap, copymap, pl, fakenow)
def fakewrite(ui, func):
# fake "now" of 'pack_dirstate' only if it is invoked while 'func'
fakenow = ui.config('fakedirstatewritetime', 'fakenow')
if not fakenow:
# Execute original one, if fakenow isn't configured. This is
# useful to prevent subrepos from executing replaced one,
# because replacing 'parsers.pack_dirstate' is also effective
# in subrepos.
return func()
# parsing 'fakenow' in YYYYmmddHHMM format makes comparison between
# 'fakenow' value and 'touch -t YYYYmmddHHMM' argument easy
fakenow = util.parsedate(fakenow, ['%Y%m%d%H%M'])[0]
orig_pack_dirstate = parsers.pack_dirstate
orig_dirstate_getfsnow = dirstate._getfsnow
wrapper = lambda *args: pack_dirstate(fakenow, orig_pack_dirstate, *args)
parsers.pack_dirstate = wrapper
dirstate._getfsnow = lambda *args: fakenow
try:
return func()
finally:
parsers.pack_dirstate = orig_pack_dirstate
dirstate._getfsnow = orig_dirstate_getfsnow
def _checklookup(orig, workingctx, files):
ui = workingctx.repo().ui
return fakewrite(ui, lambda : orig(workingctx, files))
def markcommitted(orig, committablectx, node):
ui = committablectx.repo().ui
return fakewrite(ui, lambda : orig(committablectx, node))
def extsetup(ui):
extensions.wrapfunction(context.workingctx, '_checklookup',
_checklookup)
extensions.wrapfunction(context.committablectx, 'markcommitted',
markcommitted)