rhg: desambiguate status without decompressing filelog if possible
When status is unsure based on `stat()` and the dirstate if a file is clean
or modified, we need to compare it against the filelog.
This comparison can skip looking at contents if the lengths differ.
This changeset optimize this further to deduce what we can about the length
if the filelog without decompressing it or resolving deltas.
Differential Revision: https://phab.mercurial-scm.org/D11965
from __future__ import absolute_import, print_function
import os
import stat
import sys
from mercurial.node import hex
from mercurial import (
context,
diffutil,
encoding,
hg,
scmutil,
ui as uimod,
)
print_ = print
def print(*args, **kwargs):
"""print() wrapper that flushes stdout buffers to avoid py3 buffer issues
We could also just write directly to sys.stdout.buffer the way the
ui object will, but this was easier for porting the test.
"""
print_(*args, **kwargs)
sys.stdout.flush()
def printb(data, end=b'\n'):
out = getattr(sys.stdout, 'buffer', sys.stdout)
out.write(data + end)
out.flush()
ui = uimod.ui.load()
repo = hg.repository(ui, b'test1', create=1)
os.chdir('test1')
# create 'foo' with fixed time stamp
f = open('foo', 'wb')
f.write(b'foo\n')
f.close()
os.utime('foo', (1000, 1000))
# add+commit 'foo'
repo[None].add([b'foo'])
repo.commit(text=b'commit1', date=b"0 0")
d = repo[None][b'foo'].date()
if os.name == 'nt':
d = d[:2]
print("workingfilectx.date = (%d, %d)" % d)
# test memctx with non-ASCII commit message
def filectxfn(repo, memctx, path):
return context.memfilectx(repo, memctx, b"foo", b"")
ctx = context.memctx(
repo,
[b'tip', None],
encoding.tolocal(b"Gr\xc3\xbcezi!"),
[b"foo"],
filectxfn,
)
ctx.commit()
for enc in "ASCII", "Latin-1", "UTF-8":
encoding.encoding = enc
printb(b"%-8s: %s" % (enc.encode('ascii'), repo[b"tip"].description()))
# test performing a status
def getfilectx(repo, memctx, f):
fctx = memctx.p1()[f]
data, flags = fctx.data(), fctx.flags()
if f == b'foo':
data += b'bar\n'
return context.memfilectx(
repo, memctx, f, data, b'l' in flags, b'x' in flags
)
ctxa = repo[0]
ctxb = context.memctx(
repo,
[ctxa.node(), None],
b"test diff",
[b"foo"],
getfilectx,
ctxa.user(),
ctxa.date(),
)
print(ctxb.status(ctxa))
# test performing a diff on a memctx
diffopts = diffutil.diffallopts(repo.ui, {b'git': True})
for d in ctxb.diff(ctxa, opts=diffopts):
printb(d, end=b'')
# test safeness and correctness of "ctx.status()"
print('= checking context.status():')
# ancestor "wcctx ~ 2"
actx2 = repo[b'.']
repo.wwrite(b'bar-m', b'bar-m\n', b'')
repo.wwrite(b'bar-r', b'bar-r\n', b'')
repo[None].add([b'bar-m', b'bar-r'])
repo.commit(text=b'add bar-m, bar-r', date=b"0 0")
# ancestor "wcctx ~ 1"
actx1 = repo[b'.']
repo.wwrite(b'bar-m', b'bar-m bar-m\n', b'')
repo.wwrite(b'bar-a', b'bar-a\n', b'')
repo[None].add([b'bar-a'])
repo[None].forget([b'bar-r'])
# status at this point:
# M bar-m
# A bar-a
# R bar-r
# C foo
from mercurial import scmutil
print('== checking workingctx.status:')
wctx = repo[None]
print('wctx._status=%s' % (str(wctx._status)))
print('=== with "pattern match":')
print(
actx1.status(other=wctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo']))
)
print('wctx._status=%s' % (str(wctx._status)))
print(
actx2.status(other=wctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo']))
)
print('wctx._status=%s' % (str(wctx._status)))
print('=== with "always match" and "listclean=True":')
print(actx1.status(other=wctx, listclean=True))
print('wctx._status=%s' % (str(wctx._status)))
print(actx2.status(other=wctx, listclean=True))
print('wctx._status=%s' % (str(wctx._status)))
print("== checking workingcommitctx.status:")
wcctx = context.workingcommitctx(
repo,
scmutil.status([b'bar-m'], [b'bar-a'], [], [], [], [], []),
text=b'',
date=b'0 0',
)
print('wcctx._status=%s' % (str(wcctx._status)))
print('=== with "always match":')
print(actx1.status(other=wcctx))
print('wcctx._status=%s' % (str(wcctx._status)))
print(actx2.status(other=wcctx))
print('wcctx._status=%s' % (str(wcctx._status)))
print('=== with "always match" and "listclean=True":')
print(actx1.status(other=wcctx, listclean=True))
print('wcctx._status=%s' % (str(wcctx._status)))
print(actx2.status(other=wcctx, listclean=True))
print('wcctx._status=%s' % (str(wcctx._status)))
print('=== with "pattern match":')
print(
actx1.status(
other=wcctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo'])
)
)
print('wcctx._status=%s' % (str(wcctx._status)))
print(
actx2.status(
other=wcctx, match=scmutil.matchfiles(repo, [b'bar-m', b'foo'])
)
)
print('wcctx._status=%s' % (str(wcctx._status)))
print('=== with "pattern match" and "listclean=True":')
print(
actx1.status(
other=wcctx,
match=scmutil.matchfiles(repo, [b'bar-r', b'foo']),
listclean=True,
)
)
print('wcctx._status=%s' % (str(wcctx._status)))
print(
actx2.status(
other=wcctx,
match=scmutil.matchfiles(repo, [b'bar-r', b'foo']),
listclean=True,
)
)
print('wcctx._status=%s' % (str(wcctx._status)))
os.chdir('..')
# test manifestlog being changed
print('== commit with manifestlog invalidated')
repo = hg.repository(ui, b'test2', create=1)
os.chdir('test2')
# make some commits
for i in [b'1', b'2', b'3']:
with open(i, 'wb') as f:
f.write(i)
status = scmutil.status([], [i], [], [], [], [], [])
ctx = context.workingcommitctx(
repo, status, text=i, user=b'test@test.com', date=(0, 0)
)
ctx.p1().manifest() # side effect: cache manifestctx
n = repo.commitctx(ctx)
printb(b'commit %s: %s' % (i, hex(n)))
# touch 00manifest.i mtime so storecache could expire.
# repo.__dict__['manifestlog'] is deleted by transaction releasefn.
st = repo.svfs.stat(b'00manifest.i')
repo.svfs.utime(
b'00manifest.i', (st[stat.ST_MTIME] + 1, st[stat.ST_MTIME] + 1)
)
# read the file just committed
try:
if repo[n][i].data() != i:
print('data mismatch')
except Exception as ex:
print('cannot read data: %r' % ex)
with repo.wlock(), repo.lock(), repo.transaction(b'test'):
with open(b'4', 'wb') as f:
f.write(b'4')
repo.dirstate.set_tracked(b'4')
repo.commit(b'4')
revsbefore = len(repo.changelog)
repo.invalidate(clearfilecache=True)
revsafter = len(repo.changelog)
if revsbefore != revsafter:
print('changeset lost by repo.invalidate()')