sparse-revlog: add a `trim_endidx` function in C
We are about to implement a native version of `slicechunktodensity`. For
clarity, we introduce the helper functions first.
This function implement a subpart of the python function `_trimchunk` in
`mercurial/revlogutils/deltas.py`. Handling of actual Python objects is left
to the caller function.
from __future__ import absolute_import
import binascii
import itertools
import silenttestrunner
import unittest
import zlib
from mercurial import (
manifest as manifestmod,
match as matchmod,
)
EMTPY_MANIFEST = b''
HASH_1 = b'1' * 40
BIN_HASH_1 = binascii.unhexlify(HASH_1)
HASH_2 = b'f' * 40
BIN_HASH_2 = binascii.unhexlify(HASH_2)
HASH_3 = b'1234567890abcdef0987654321deadbeef0fcafe'
BIN_HASH_3 = binascii.unhexlify(HASH_3)
A_SHORT_MANIFEST = (
b'bar/baz/qux.py\0%(hash2)s%(flag2)s\n'
b'foo\0%(hash1)s%(flag1)s\n'
) % {b'hash1': HASH_1,
b'flag1': b'',
b'hash2': HASH_2,
b'flag2': b'l',
}
A_DEEPER_MANIFEST = (
b'a/b/c/bar.py\0%(hash3)s%(flag1)s\n'
b'a/b/c/bar.txt\0%(hash1)s%(flag1)s\n'
b'a/b/c/foo.py\0%(hash3)s%(flag1)s\n'
b'a/b/c/foo.txt\0%(hash2)s%(flag2)s\n'
b'a/b/d/baz.py\0%(hash3)s%(flag1)s\n'
b'a/b/d/qux.py\0%(hash1)s%(flag2)s\n'
b'a/b/d/ten.txt\0%(hash3)s%(flag2)s\n'
b'a/b/dog.py\0%(hash3)s%(flag1)s\n'
b'a/b/fish.py\0%(hash2)s%(flag1)s\n'
b'a/c/london.py\0%(hash3)s%(flag2)s\n'
b'a/c/paper.txt\0%(hash2)s%(flag2)s\n'
b'a/c/paris.py\0%(hash2)s%(flag1)s\n'
b'a/d/apple.py\0%(hash3)s%(flag1)s\n'
b'a/d/pizza.py\0%(hash3)s%(flag2)s\n'
b'a/green.py\0%(hash1)s%(flag2)s\n'
b'a/purple.py\0%(hash2)s%(flag1)s\n'
b'app.py\0%(hash3)s%(flag1)s\n'
b'readme.txt\0%(hash2)s%(flag1)s\n'
) % {b'hash1': HASH_1,
b'flag1': b'',
b'hash2': HASH_2,
b'flag2': b'l',
b'hash3': HASH_3,
}
HUGE_MANIFEST_ENTRIES = 200001
izip = getattr(itertools, 'izip', zip)
if 'xrange' not in globals():
xrange = range
A_HUGE_MANIFEST = b''.join(sorted(
b'file%d\0%s%s\n' % (i, h, f) for i, h, f in
izip(xrange(200001),
itertools.cycle((HASH_1, HASH_2)),
itertools.cycle((b'', b'x', b'l')))))
class basemanifesttests(object):
def parsemanifest(self, text):
raise NotImplementedError('parsemanifest not implemented by test case')
def testEmptyManifest(self):
m = self.parsemanifest(EMTPY_MANIFEST)
self.assertEqual(0, len(m))
self.assertEqual([], list(m))
def testManifest(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
self.assertEqual([b'bar/baz/qux.py', b'foo'], list(m))
self.assertEqual(BIN_HASH_2, m[b'bar/baz/qux.py'])
self.assertEqual(b'l', m.flags(b'bar/baz/qux.py'))
self.assertEqual(BIN_HASH_1, m[b'foo'])
self.assertEqual(b'', m.flags(b'foo'))
with self.assertRaises(KeyError):
m[b'wat']
def testSetItem(self):
want = BIN_HASH_1
m = self.parsemanifest(EMTPY_MANIFEST)
m[b'a'] = want
self.assertIn(b'a', m)
self.assertEqual(want, m[b'a'])
self.assertEqual(b'a\0' + HASH_1 + b'\n', m.text())
m = self.parsemanifest(A_SHORT_MANIFEST)
m[b'a'] = want
self.assertEqual(want, m[b'a'])
self.assertEqual(b'a\0' + HASH_1 + b'\n' + A_SHORT_MANIFEST,
m.text())
def testSetFlag(self):
want = b'x'
m = self.parsemanifest(EMTPY_MANIFEST)
# first add a file; a file-less flag makes no sense
m[b'a'] = BIN_HASH_1
m.setflag(b'a', want)
self.assertEqual(want, m.flags(b'a'))
self.assertEqual(b'a\0' + HASH_1 + want + b'\n', m.text())
m = self.parsemanifest(A_SHORT_MANIFEST)
# first add a file; a file-less flag makes no sense
m[b'a'] = BIN_HASH_1
m.setflag(b'a', want)
self.assertEqual(want, m.flags(b'a'))
self.assertEqual(b'a\0' + HASH_1 + want + b'\n' + A_SHORT_MANIFEST,
m.text())
def testCopy(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
m[b'a'] = BIN_HASH_1
m2 = m.copy()
del m
del m2 # make sure we don't double free() anything
def testCompaction(self):
unhex = binascii.unhexlify
h1, h2 = unhex(HASH_1), unhex(HASH_2)
m = self.parsemanifest(A_SHORT_MANIFEST)
m[b'alpha'] = h1
m[b'beta'] = h2
del m[b'foo']
want = b'alpha\0%s\nbar/baz/qux.py\0%sl\nbeta\0%s\n' % (
HASH_1, HASH_2, HASH_2)
self.assertEqual(want, m.text())
self.assertEqual(3, len(m))
self.assertEqual([b'alpha', b'bar/baz/qux.py', b'beta'], list(m))
self.assertEqual(h1, m[b'alpha'])
self.assertEqual(h2, m[b'bar/baz/qux.py'])
self.assertEqual(h2, m[b'beta'])
self.assertEqual(b'', m.flags(b'alpha'))
self.assertEqual(b'l', m.flags(b'bar/baz/qux.py'))
self.assertEqual(b'', m.flags(b'beta'))
with self.assertRaises(KeyError):
m[b'foo']
def testSetGetNodeSuffix(self):
clean = self.parsemanifest(A_SHORT_MANIFEST)
m = self.parsemanifest(A_SHORT_MANIFEST)
h = m[b'foo']
f = m.flags(b'foo')
want = h + b'a'
# Merge code wants to set 21-byte fake hashes at times
m[b'foo'] = want
self.assertEqual(want, m[b'foo'])
self.assertEqual([(b'bar/baz/qux.py', BIN_HASH_2),
(b'foo', BIN_HASH_1 + b'a')],
list(m.items()))
# Sometimes it even tries a 22-byte fake hash, but we can
# return 21 and it'll work out
m[b'foo'] = want + b'+'
self.assertEqual(want, m[b'foo'])
# make sure the suffix survives a copy
match = matchmod.match(b'', b'', [b're:foo'])
m2 = m.matches(match)
self.assertEqual(want, m2[b'foo'])
self.assertEqual(1, len(m2))
m2 = m.copy()
self.assertEqual(want, m2[b'foo'])
# suffix with iteration
self.assertEqual([(b'bar/baz/qux.py', BIN_HASH_2),
(b'foo', want)],
list(m.items()))
# shows up in diff
self.assertEqual({b'foo': ((want, f), (h, b''))}, m.diff(clean))
self.assertEqual({b'foo': ((h, b''), (want, f))}, clean.diff(m))
def testMatchException(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
match = matchmod.match(b'', b'', [b're:.*'])
def filt(path):
if path == b'foo':
assert False
return True
match.matchfn = filt
with self.assertRaises(AssertionError):
m.matches(match)
def testRemoveItem(self):
m = self.parsemanifest(A_SHORT_MANIFEST)
del m[b'foo']
with self.assertRaises(KeyError):
m[b'foo']
self.assertEqual(1, len(m))
self.assertEqual(1, len(list(m)))
# now restore and make sure everything works right
m[b'foo'] = b'a' * 20
self.assertEqual(2, len(m))
self.assertEqual(2, len(list(m)))
def testManifestDiff(self):
MISSING = (None, b'')
addl = b'z-only-in-left\0' + HASH_1 + b'\n'
addr = b'z-only-in-right\0' + HASH_2 + b'x\n'
left = self.parsemanifest(
A_SHORT_MANIFEST.replace(HASH_1, HASH_3 + b'x') + addl)
right = self.parsemanifest(A_SHORT_MANIFEST + addr)
want = {
b'foo': ((BIN_HASH_3, b'x'),
(BIN_HASH_1, b'')),
b'z-only-in-left': ((BIN_HASH_1, b''), MISSING),
b'z-only-in-right': (MISSING, (BIN_HASH_2, b'x')),
}
self.assertEqual(want, left.diff(right))
want = {
b'bar/baz/qux.py': (MISSING, (BIN_HASH_2, b'l')),
b'foo': (MISSING, (BIN_HASH_3, b'x')),
b'z-only-in-left': (MISSING, (BIN_HASH_1, b'')),
}
self.assertEqual(want, self.parsemanifest(EMTPY_MANIFEST).diff(left))
want = {
b'bar/baz/qux.py': ((BIN_HASH_2, b'l'), MISSING),
b'foo': ((BIN_HASH_3, b'x'), MISSING),
b'z-only-in-left': ((BIN_HASH_1, b''), MISSING),
}
self.assertEqual(want, left.diff(self.parsemanifest(EMTPY_MANIFEST)))
copy = right.copy()
del copy[b'z-only-in-right']
del right[b'foo']
want = {
b'foo': (MISSING, (BIN_HASH_1, b'')),
b'z-only-in-right': ((BIN_HASH_2, b'x'), MISSING),
}
self.assertEqual(want, right.diff(copy))
short = self.parsemanifest(A_SHORT_MANIFEST)
pruned = short.copy()
del pruned[b'foo']
want = {
b'foo': ((BIN_HASH_1, b''), MISSING),
}
self.assertEqual(want, short.diff(pruned))
want = {
b'foo': (MISSING, (BIN_HASH_1, b'')),
}
self.assertEqual(want, pruned.diff(short))
want = {
b'bar/baz/qux.py': None,
b'foo': (MISSING, (BIN_HASH_1, b'')),
}
self.assertEqual(want, pruned.diff(short, clean=True))
def testReversedLines(self):
backwards = b''.join(
l + b'\n' for l in reversed(A_SHORT_MANIFEST.split(b'\n')) if l)
try:
self.parsemanifest(backwards)
self.fail('Should have raised ValueError')
except ValueError as v:
self.assertIn('Manifest lines not in sorted order.', str(v))
def testNoTerminalNewline(self):
try:
self.parsemanifest(A_SHORT_MANIFEST + b'wat')
self.fail('Should have raised ValueError')
except ValueError as v:
self.assertIn('Manifest did not end in a newline.', str(v))
def testNoNewLineAtAll(self):
try:
self.parsemanifest(b'wat')
self.fail('Should have raised ValueError')
except ValueError as v:
self.assertIn('Manifest did not end in a newline.', str(v))
def testHugeManifest(self):
m = self.parsemanifest(A_HUGE_MANIFEST)
self.assertEqual(HUGE_MANIFEST_ENTRIES, len(m))
self.assertEqual(len(m), len(list(m)))
def testMatchesMetadata(self):
'''Tests matches() for a few specific files to make sure that both
the set of files as well as their flags and nodeids are correct in
the resulting manifest.'''
m = self.parsemanifest(A_HUGE_MANIFEST)
match = matchmod.match(b'/', b'',
[b'file1', b'file200', b'file300'], exact=True)
m2 = m.matches(match)
w = (b'file1\0%sx\n'
b'file200\0%sl\n'
b'file300\0%s\n') % (HASH_2, HASH_1, HASH_1)
self.assertEqual(w, m2.text())
def testMatchesNonexistentFile(self):
'''Tests matches() for a small set of specific files, including one
nonexistent file to make sure in only matches against existing files.
'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'',
[b'a/b/c/bar.txt', b'a/b/d/qux.py',
b'readme.txt', b'nonexistent'],
exact=True)
m2 = m.matches(match)
self.assertEqual(
[b'a/b/c/bar.txt', b'a/b/d/qux.py', b'readme.txt'],
m2.keys())
def testMatchesNonexistentDirectory(self):
'''Tests matches() for a relpath match on a directory that doesn't
actually exist.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'', [b'a/f'], default=b'relpath')
m2 = m.matches(match)
self.assertEqual([], m2.keys())
def testMatchesExactLarge(self):
'''Tests matches() for files matching a large list of exact files.
'''
m = self.parsemanifest(A_HUGE_MANIFEST)
flist = m.keys()[80:300]
match = matchmod.match(b'/', b'', flist, exact=True)
m2 = m.matches(match)
self.assertEqual(flist, m2.keys())
def testMatchesFull(self):
'''Tests matches() for what should be a full match.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'', [b''])
m2 = m.matches(match)
self.assertEqual(m.keys(), m2.keys())
def testMatchesDirectory(self):
'''Tests matches() on a relpath match on a directory, which should
match against all files within said directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'', [b'a/b'], default=b'relpath')
m2 = m.matches(match)
self.assertEqual([
b'a/b/c/bar.py', b'a/b/c/bar.txt', b'a/b/c/foo.py',
b'a/b/c/foo.txt',
b'a/b/d/baz.py', b'a/b/d/qux.py', b'a/b/d/ten.txt', b'a/b/dog.py',
b'a/b/fish.py'], m2.keys())
def testMatchesExactPath(self):
'''Tests matches() on an exact match on a directory, which should
result in an empty manifest because you can't perform an exact match
against a directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'', [b'a/b'], exact=True)
m2 = m.matches(match)
self.assertEqual([], m2.keys())
def testMatchesCwd(self):
'''Tests matches() on a relpath match with the current directory ('.')
when not in the root directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'a/b', [b'.'], default=b'relpath')
m2 = m.matches(match)
self.assertEqual([
b'a/b/c/bar.py', b'a/b/c/bar.txt', b'a/b/c/foo.py',
b'a/b/c/foo.txt', b'a/b/d/baz.py', b'a/b/d/qux.py',
b'a/b/d/ten.txt', b'a/b/dog.py', b'a/b/fish.py'], m2.keys())
def testMatchesWithPattern(self):
'''Tests matches() for files matching a pattern that reside
deeper than the specified directory.'''
m = self.parsemanifest(A_DEEPER_MANIFEST)
match = matchmod.match(b'/', b'', [b'a/b/*/*.txt'])
m2 = m.matches(match)
self.assertEqual(
[b'a/b/c/bar.txt', b'a/b/c/foo.txt', b'a/b/d/ten.txt'],
m2.keys())
class testmanifestdict(unittest.TestCase, basemanifesttests):
def parsemanifest(self, text):
return manifestmod.manifestdict(text)
def testObviouslyBogusManifest(self):
# This is a 163k manifest that came from oss-fuzz. It was a
# timeout there, but when run normally it doesn't seem to
# present any particular slowness.
data = zlib.decompress(
b'x\x9c\xed\xce;\n\x83\x00\x10\x04\xd0\x8deNa\x93~\xf1\x03\xc9q\xf4'
b'\x14\xeaU\xbdB\xda\xd4\xe6Cj\xc1FA\xde+\x86\xe9f\xa2\xfci\xbb\xfb'
b'\xa3\xef\xea\xba\xca\x7fk\x86q\x9a\xc6\xc8\xcc&\xb3\xcf\xf8\xb8|#'
b'\x8a9\x00\xd8\xe6v\xf4\x01N\xe1\n\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
b'\x00\x00\xc0\x8aey\x1d}\x01\xd8\xe0\xb9\xf3\xde\x1b\xcf\x17'
b'\xac\xbe')
with self.assertRaises(ValueError):
self.parsemanifest(data)
class testtreemanifest(unittest.TestCase, basemanifesttests):
def parsemanifest(self, text):
return manifestmod.treemanifest(b'', text)
def testWalkSubtrees(self):
m = self.parsemanifest(A_DEEPER_MANIFEST)
dirs = [s._dir for s in m.walksubtrees()]
self.assertEqual(
sorted([
b'', b'a/', b'a/c/', b'a/d/', b'a/b/', b'a/b/c/', b'a/b/d/']),
sorted(dirs)
)
match = matchmod.match(b'/', b'', [b'path:a/b/'])
dirs = [s._dir for s in m.walksubtrees(matcher=match)]
self.assertEqual(
sorted([b'a/b/', b'a/b/c/', b'a/b/d/']),
sorted(dirs)
)
if __name__ == '__main__':
silenttestrunner.main(__name__)