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sapling/eden/scm/edenscm/mercurial/store.py
Adam Simpkins 0bc787c4c0 remove the mercurial.policy module 
Summary:
This module previously used to handle deciding how a particular module should
be imported if it had multiple versions (e.g., pure Python or native).
However, as of D18819680 it was changed to always import the native C version.

Lets go ahead and remove it entirely now.  Using `policy.importmod` simply
makes it harder for type checkers to figure out the actual module that will be
used.

The only functionality that `policy.importmod()` still provided was verifying
that the module contained a "version" field that looked like what was
expected.  In practice these version numbers are not bumped often, so this
doesn't really seem to provide much value in checking that we imported the
correct version that we expected to be shipped with this release.

Reviewed By: xavierd

Differential Revision: D19958227

fbshipit-source-id: 05f1d027d0a41cf99c4aa93cb84a51e830305077
2020-02-21 13:54:19 -08:00

796 lines
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# Portions Copyright (c) Facebook, Inc. and its affiliates.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2.
# store.py - repository store handling for Mercurial
#
# Copyright 2008 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
import errno
import hashlib
import os
import stat
from typing import Optional
import bindings
from edenscmnative import parsers
from . import error, pycompat, util, vfs as vfsmod
from .i18n import _
from .pycompat import decodeutf8, encodeutf8, range
# This avoids a collision between a file named foo and a dir named
# foo.i or foo.d
def _encodedir(path):
"""
>>> _encodedir(b'data/foo.i')
'data/foo.i'
>>> _encodedir(b'data/foo.i/bla.i')
'data/foo.i.hg/bla.i'
>>> _encodedir(b'data/foo.i.hg/bla.i')
'data/foo.i.hg.hg/bla.i'
>>> _encodedir(b'data/foo.i\\ndata/foo.i/bla.i\\ndata/foo.i.hg/bla.i\\n')
'data/foo.i\\ndata/foo.i.hg/bla.i\\ndata/foo.i.hg.hg/bla.i\\n'
"""
return (
path.replace(".hg/", ".hg.hg/")
.replace(".i/", ".i.hg/")
.replace(".d/", ".d.hg/")
)
encodedir = getattr(parsers, "encodedir", _encodedir)
def decodedir(path):
"""
>>> decodedir(b'data/foo.i')
'data/foo.i'
>>> decodedir(b'data/foo.i.hg/bla.i')
'data/foo.i/bla.i'
>>> decodedir(b'data/foo.i.hg.hg/bla.i')
'data/foo.i.hg/bla.i'
"""
if ".hg/" not in path:
return path
return (
path.replace(".d.hg/", ".d/")
.replace(".i.hg/", ".i/")
.replace(".hg.hg/", ".hg/")
)
def _reserved():
""" characters that are problematic for filesystems
* ascii escapes (0..31)
* ascii hi (126..255)
* windows specials
these characters will be escaped by encodefunctions
"""
winreserved = [ord(x) for x in u'\\:*?"<>|']
for x in range(32):
yield x
for x in range(126, 256):
yield x
for x in winreserved:
yield x
def _buildencodefun(forfncache):
"""
>>> enc, dec = _buildencodefun(False)
>>> enc(b'nothing/special.txt')
'nothing/special.txt'
>>> dec(b'nothing/special.txt')
'nothing/special.txt'
>>> enc(b'HELLO')
'_h_e_l_l_o'
>>> dec(b'_h_e_l_l_o')
'HELLO'
>>> enc(b'hello:world?')
'hello~3aworld~3f'
>>> dec(b'hello~3aworld~3f')
'hello:world?'
>>> enc(b'the\\x07quick\\xADshot')
'the~07quick~adshot'
>>> dec(b'the~07quick~adshot')
'the\\x07quick\\xadshot'
>>> enc(b'X' * 128)
'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
>>> enc(b'X' * 127)
'_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x_x'
>>> path = '/'.join([b'Z', b'X' * 128, b'Y' * 127])
>>> enc(path)
'_z/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y_y'
>>> dec(enc(path)) == path
True
>>> dec(enc(b'X' * 128)) == 'X' * 128
True
>>> dec(enc(b'X' * 127)) == 'X' * 127
True
>>> enc(b'/')
'/'
>>> dec(b'/')
'/'
>>> enc(b'X' * 253 + b'_')
'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX__'
>>> enc(b'X' * 254 + b'_')
'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:'
>>> path = '/'.join([b'Z', b'X_' * 85, b'Y_' * 86])
>>> enc(path)
'_z/X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__X__/Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:Y:'
>>> dec(enc(path)) == path
True
>>> dec(enc(b'_' * 128)) == '_' * 128
True
>>> dec(enc(b'_' * 127)) == '_' * 127
True
"""
e = "_"
xchr = pycompat.bytechr
asciistr = list(map(xchr, range(127)))
capitals = list(range(ord("A"), ord("Z") + 1))
cmap = dict((x, x) for x in asciistr)
for x in _reserved():
cmap[xchr(x)] = "~%02x" % x
for x in capitals + [ord(e)]:
cmap[xchr(x)] = e + xchr(x).lower()
dmap = {}
for k, v in cmap.items():
dmap[v] = k
if not forfncache:
cmaplong = cmap.copy()
for i in capitals:
c = chr(i)
cmaplong[c] = c
assert c not in dmap
dmap[c] = c
cmapverylong = cmaplong.copy()
cmapverylong["_"] = ":"
assert ":" not in dmap
dmap[":"] = "_"
def encodecomp(comp):
encoded = "".join(cmap[c] for c in comp)
if len(encoded) > 255:
encoded = "".join(cmaplong[c] for c in comp)
if len(encoded) > 255:
encoded = "".join(cmapverylong[c] for c in comp)
return encoded
def encodemaybelong(path):
return "/".join(map(encodecomp, path.split("/")))
def decode(s):
i = 0
while i < len(s):
for l in range(1, 4):
try:
yield dmap[s[i : i + l]]
i += l
break
except KeyError:
pass
else:
raise KeyError
if forfncache:
return (
lambda s: "".join([cmap[s[c : c + 1]] for c in range(len(s))]),
lambda s: "".join(list(decode(s))),
)
else:
return (encodemaybelong, lambda s: "".join(list(decode(s))))
_encodefname, _decodefname = _buildencodefun(True)
# Special version that works with long upper-case file names
_encodefnamelong, _decodefnamelong = _buildencodefun(False)
def encodefilename(s):
"""
>>> encodefilename(b'foo.i/bar.d/bla.hg/hi:world?/HELLO')
'foo.i.hg/bar.d.hg/bla.hg.hg/hi~3aworld~3f/_h_e_l_l_o'
"""
return _encodefnamelong(encodedir(s))
def decodefilename(s):
"""
>>> decodefilename(b'foo.i.hg/bar.d.hg/bla.hg.hg/hi~3aworld~3f/_h_e_l_l_o')
'foo.i/bar.d/bla.hg/hi:world?/HELLO'
"""
return decodedir(_decodefnamelong(s))
def _buildlowerencodefun():
"""
>>> f = _buildlowerencodefun()
>>> f(b'nothing/special.txt')
'nothing/special.txt'
>>> f(b'HELLO')
'hello'
>>> f(b'hello:world?')
'hello~3aworld~3f'
>>> f(b'the\\x07quick\\xADshot')
'the~07quick~adshot'
"""
xchr = pycompat.bytechr
cmap = dict([(xchr(x), xchr(x)) for x in range(127)])
for x in _reserved():
cmap[xchr(x)] = "~%02x" % x
for x in range(ord("A"), ord("Z") + 1):
cmap[xchr(x)] = xchr(x).lower()
def lowerencode(s):
return "".join([cmap[c] for c in iter(s)])
return lowerencode
lowerencode = getattr(parsers, "lowerencode", None) or _buildlowerencodefun()
# Windows reserved names: con, prn, aux, nul, com1..com9, lpt1..lpt9
_winres3 = ("aux", "con", "prn", "nul") # length 3
_winres4 = ("com", "lpt") # length 4 (with trailing 1..9)
def _auxencode(path, dotencode):
"""
Encodes filenames containing names reserved by Windows or which end in
period or space. Does not touch other single reserved characters c.
Specifically, c in '\\:*?"<>|' or ord(c) <= 31 are *not* encoded here.
Additionally encodes space or period at the beginning, if dotencode is
True. Parameter path is assumed to be all lowercase.
A segment only needs encoding if a reserved name appears as a
basename (e.g. "aux", "aux.foo"). A directory or file named "foo.aux"
doesn't need encoding.
>>> s = b'.foo/aux.txt/txt.aux/con/prn/nul/foo.'
>>> _auxencode(s.split(b'/'), True)
['~2efoo', 'au~78.txt', 'txt.aux', 'co~6e', 'pr~6e', 'nu~6c', 'foo~2e']
>>> s = b'.com1com2/lpt9.lpt4.lpt1/conprn/com0/lpt0/foo.'
>>> _auxencode(s.split(b'/'), False)
['.com1com2', 'lp~749.lpt4.lpt1', 'conprn', 'com0', 'lpt0', 'foo~2e']
>>> _auxencode([b'foo. '], True)
['foo.~20']
>>> _auxencode([b' .foo'], True)
['~20.foo']
"""
for i, n in enumerate(path):
if not n:
continue
if dotencode and n[0] in ". ":
n = "~%02x" % ord(n[0:1]) + n[1:]
path[i] = n
else:
l = n.find(".")
if l == -1:
l = len(n)
if (l == 3 and n[:3] in _winres3) or (
l == 4 and n[3:4] <= "9" and n[3:4] >= "1" and n[:3] in _winres4
):
# encode third letter ('aux' -> 'au~78')
ec = "~%02x" % ord(n[2:3])
n = n[0:2] + ec + n[3:]
path[i] = n
if n[-1] in ". ":
# encode last period or space ('foo...' -> 'foo..~2e')
path[i] = n[:-1] + "~%02x" % ord(n[-1:])
return path
_maxstorepathlen = 120
_dirprefixlen = 8
_maxshortdirslen = 8 * (_dirprefixlen + 1) - 4
def _hashencode(path, dotencode):
digest = hashlib.sha1(encodeutf8(path)).hexdigest()
le = lowerencode(path[5:]).split("/") # skips prefix 'data/' or 'meta/'
parts = _auxencode(le, dotencode)
basename = parts[-1]
_root, ext = os.path.splitext(basename)
sdirs = []
sdirslen = 0
for p in parts[:-1]:
d = p[:_dirprefixlen]
if d[-1] in ". ":
# Windows can't access dirs ending in period or space
d = d[:-1] + "_"
if sdirslen == 0:
t = len(d)
else:
t = sdirslen + 1 + len(d)
if t > _maxshortdirslen:
break
sdirs.append(d)
sdirslen = t
dirs = "/".join(sdirs)
if len(dirs) > 0:
dirs += "/"
res = "dh/" + dirs + digest + ext
spaceleft = _maxstorepathlen - len(res)
if spaceleft > 0:
filler = basename[:spaceleft]
res = "dh/" + dirs + filler + digest + ext
return res
def _hybridencode(path, dotencode):
"""encodes path with a length limit
Encodes all paths that begin with 'data/', according to the following.
Default encoding (reversible):
Encodes all uppercase letters 'X' as '_x'. All reserved or illegal
characters are encoded as '~xx', where xx is the two digit hex code
of the character (see encodefilename).
Relevant path components consisting of Windows reserved filenames are
masked by encoding the third character ('aux' -> 'au~78', see _auxencode).
Hashed encoding (not reversible):
If the default-encoded path is longer than _maxstorepathlen, a
non-reversible hybrid hashing of the path is done instead.
This encoding uses up to _dirprefixlen characters of all directory
levels of the lowerencoded path, but not more levels than can fit into
_maxshortdirslen.
Then follows the filler followed by the sha digest of the full path.
The filler is the beginning of the basename of the lowerencoded path
(the basename is everything after the last path separator). The filler
is as long as possible, filling in characters from the basename until
the encoded path has _maxstorepathlen characters (or all chars of the
basename have been taken).
The extension (e.g. '.i' or '.d') is preserved.
The string 'data/' at the beginning is replaced with 'dh/', if the hashed
encoding was used.
"""
path = encodedir(path)
ef = _encodefname(path).split("/")
res = "/".join(_auxencode(ef, dotencode))
if len(res) > _maxstorepathlen:
res = _hashencode(path, dotencode)
return res
def _pathencode(path):
de = encodedir(path)
if len(path) > _maxstorepathlen:
return _hashencode(de, True)
ef = _encodefname(de).split("/")
res = "/".join(_auxencode(ef, True))
if len(res) > _maxstorepathlen:
return _hashencode(de, True)
return res
_pathencode = getattr(parsers, "pathencode", _pathencode)
def _plainhybridencode(f):
return _hybridencode(f, False)
def _calcmode(vfs):
try:
# files in .hg/ will be created using this mode
mode = vfs.stat().st_mode
# avoid some useless chmods
if (0o777 & ~util.umask) == (0o777 & mode):
mode = None
except OSError:
mode = None
return mode
_data = (
"data meta 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
" phaseroots obsstore visibleheads"
)
class basicstore(object):
"""base class for local repository stores"""
def __init__(self, path, vfstype):
vfs = vfstype(path)
self.path = vfs.base
self.createmode = _calcmode(vfs)
vfs.createmode = self.createmode
self.rawvfs = vfs
self.vfs = vfsmod.filtervfs(vfs, encodedir)
self.opener = self.vfs
def join(self, f):
return self.path + "/" + encodedir(f)
def _walk(self, relpath, recurse):
"""yields (unencoded, encoded, size)"""
path = self.path
if relpath:
path += "/" + relpath
striplen = len(self.path) + 1
l = []
if self.rawvfs.isdir(path):
visit = [path]
readdir = self.rawvfs.readdir
while visit:
p = visit.pop()
for f, kind, st in readdir(p, stat=True):
fp = p + "/" + f
if kind == stat.S_IFREG and f[-2:] in (".d", ".i"):
n = util.pconvert(fp[striplen:])
l.append((decodedir(n), n, st.st_size))
elif kind == stat.S_IFDIR and recurse:
visit.append(fp)
l.sort()
return l
def datafiles(self):
return self._walk("data", True) + self._walk("meta", True)
def topfiles(self):
# yield manifest before changelog
return reversed(self._walk("", False))
def walk(self):
"""yields (unencoded, encoded, size)"""
# yield data files first
for x in self.datafiles():
yield x
for x in self.topfiles():
yield x
def copylist(self):
return ["requires"] + _data.split()
def write(self, tr):
pass
def invalidatecaches(self):
pass
def markremoved(self, fn):
pass
def __contains__(self, path):
"""Checks if the store contains path"""
path = "/".join(("data", path))
# file?
if self.vfs.exists(path + ".i"):
return True
# dir?
if not path.endswith("/"):
path = path + "/"
return self.vfs.exists(path)
class encodedstore(basicstore):
def __init__(self, path, vfstype):
vfs = vfstype(path + "/store")
self.path = vfs.base
self.createmode = _calcmode(vfs)
vfs.createmode = self.createmode
self.rawvfs = vfs
self.vfs = vfsmod.filtervfs(vfs, encodefilename)
self.opener = self.vfs
def datafiles(self):
for a, b, size in super(encodedstore, self).datafiles():
try:
a = decodefilename(a)
except KeyError:
a = None
yield a, b, size
def join(self, f):
return self.path + "/" + encodefilename(f)
def copylist(self):
return ["requires", "00changelog.i", "store/requires"] + [
"store/" + f for f in _data.split()
]
class fncache(object):
# the filename used to be partially encoded
# hence the encodedir/decodedir dance
def __init__(self, vfs):
self.vfs = vfs
self.entries = None
self._dirty = False
def _load(self):
"""fill the entries from the fncache file"""
self._dirty = False
try:
fp = self.vfs("fncache", mode="rb")
except IOError:
# skip nonexistent file
self.entries = set()
return
self.entries = set(decodedir(decodeutf8(fp.read())).splitlines())
if "" in self.entries:
fp.seek(0)
for n, line in enumerate(util.iterfile(fp)):
line = decodeutf8(line)
if not line.rstrip("\n"):
t = _("invalid entry in fncache, line %d") % (n + 1)
raise error.Abort(t)
fp.close()
def write(self, tr):
if self._dirty:
tr.addbackup("fncache")
fp = self.vfs("fncache", mode="wb", atomictemp=True)
if self.entries:
fp.write(encodeutf8(encodedir("\n".join(self.entries) + "\n")))
fp.close()
self._dirty = False
def add(self, fn):
if self.entries is None:
self._load()
if fn not in self.entries:
self._dirty = True
self.entries.add(fn)
def remove(self, fn):
if self.entries is None:
self._load()
try:
self.entries.remove(fn)
self._dirty = True
except KeyError:
pass
def __contains__(self, fn):
if self.entries is None:
self._load()
return fn in self.entries
def __iter__(self):
if self.entries is None:
self._load()
return iter(self.entries)
class metavfs(object):
"""Wrapper vfs that writes data to metalog"""
metapaths = {}
@util.propertycache
def metalog(self):
vfs = self.vfs
metalog = bindings.metalog.metalog(vfs.join("metalog"))
# Keys that are previously tracked in metalog.
tracked = set((metalog.get("tracked") or "").split())
# Keys that should be tracked (specified by config).
desired = set(self.metapaths)
# Migrate up (from svfs plain files to metalog).
for name in desired.difference(tracked):
data = vfs.tryread(name)
if data is not None:
metalog[name] = data
# Migrating down is a no-op, since we double-write to svfs too.
metalog["tracked"] = "\n".join(sorted(desired)).encode("utf-8")
try:
# XXX: This is racy.
metalog.commit("migrate from vfs", int(util.timer()))
except Exception:
pass
return metalog
def metaopen(self, path, mode="r"):
assert path in self.metapaths
# Return a virtual file that is backed by self.metalog
if mode in {"r", "rb"}:
return readablestream(self.metalog[path] or b"")
elif mode in {"w", "wb"}:
def write(content, path=path, self=self):
self.metalog.set(path, content)
# Also write to disk for compatibility (ex. shell completion
# script might read them).
legacypath = self.join(path)
util.replacefile(legacypath, content)
return writablestream(write)
else:
raise error.ProgrammingError("mode %s is unsupported for %s" % (mode, path))
class readablestream(object):
"""Similar to stringio, but also works in a with context"""
def __init__(self, data):
self.stream = util.stringio(data)
def __enter__(self):
return self.stream
def __exit__(self, exctype, excval, exctb):
pass
def __getattr__(self, name):
return getattr(self.stream, name)
def close(self):
pass
class writablestream(object):
"""Writable stringio that writes to specified place on close"""
def __init__(self, writefunc):
self.writefunc = writefunc
self.stream = util.stringio()
self.closed = False
def __enter__(self):
assert not self.closed
return self.stream
def __exit__(self, exctype, excval, exctb):
self.close()
def __getattr__(self, name):
assert not self.closed
return getattr(self.stream, name)
def __del__(self):
self.close()
def close(self):
if self.closed:
return
self.closed = True
value = self.stream.getvalue()
self.writefunc(value)
class _fncachevfs(vfsmod.abstractvfs, vfsmod.proxyvfs, metavfs):
def __init__(self, vfs, fnc, encode):
vfsmod.proxyvfs.__init__(self, vfs)
self.fncache = fnc
self.encode = encode
def __call__(self, path, mode="r", *args, **kw):
if path in self.metapaths:
return self.metaopen(path, mode)
if mode not in ("r", "rb") and (
path.startswith("data/") or path.startswith("meta/")
):
self.fncache.add(path)
return self.vfs(self.encode(path), mode, *args, **kw)
def join(self, path, *insidef):
# type: (Optional[str], str) -> str
if path:
return self.vfs.join(self.encode(os.path.join(path, *insidef)))
else:
return self.vfs.join(path)
class fncachestore(basicstore):
def __init__(self, path, vfstype, dotencode):
if dotencode:
encode = _pathencode
else:
encode = _plainhybridencode
self.encode = encode
vfs = vfstype(path + "/store")
self.path = vfs.base
self.pathsep = self.path + "/"
self.createmode = _calcmode(vfs)
vfs.createmode = self.createmode
self.rawvfs = vfs
fnc = fncache(vfs)
self.fncache = fnc
self.vfs = _fncachevfs(vfs, fnc, encode)
self.opener = self.vfs
def join(self, f):
return self.pathsep + self.encode(f)
def getsize(self, path):
return self.rawvfs.stat(path).st_size
def datafiles(self):
for f in sorted(self.fncache):
ef = self.encode(f)
try:
yield f, ef, self.getsize(ef)
except OSError as err:
if err.errno != errno.ENOENT:
raise
def copylist(self):
d = (
"data meta dh fncache phaseroots obsstore visibleheads"
" 00manifest.d 00manifest.i 00changelog.d 00changelog.i"
)
return ["requires", "00changelog.i", "store/requires"] + [
"store/" + f for f in d.split()
]
def write(self, tr):
self.fncache.write(tr)
def invalidatecaches(self):
self.fncache.entries = None
def markremoved(self, fn):
self.fncache.remove(fn)
def _exists(self, f):
ef = self.encode(f)
try:
self.getsize(ef)
return True
except OSError as err:
if err.errno != errno.ENOENT:
raise
# nonexistent entry
return False
def __contains__(self, path):
"""Checks if the store contains path"""
path = "/".join(("data", path))
# check for files (exact match)
e = path + ".i"
if e in self.fncache and self._exists(e):
return True
# now check for directories (prefix match)
if not path.endswith("/"):
path += "/"
for e in self.fncache:
if e.startswith(path) and self._exists(e):
return True
return False
def store(requirements, path, vfstype, uiconfig=None):
if "store" in requirements:
if "fncache" in requirements:
store = fncachestore(path, vfstype, "dotencode" in requirements)
if uiconfig and uiconfig.configbool("experimental", "metalog"):
# Change remotenames and visibleheads to be backed by metalog,
# so they can be atomically read or written.
store.vfs.metapaths = {"remotenames", "visibleheads", "bookmarks"}
return store
return encodedstore(path, vfstype)
return basicstore(path, vfstype)
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