largefiles: simplify iteration over standins
Instead of iterating over all files in the context and ignoring those
that are not standins, pass a standin-matcher to the context and
iterate over only the files matching.
Apart from making the intent clearer, this implementation will also
benefit from any future optimizations done to the manifest walking
code.
# Copyright 2009-2010 Gregory P. Ward
# Copyright 2009-2010 Intelerad Medical Systems Incorporated
# Copyright 2010-2011 Fog Creek Software
# Copyright 2010-2011 Unity Technologies
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''setup for largefiles repositories: reposetup'''
import copy
import os
from mercurial import error, manifest, match as match_, util
from mercurial.i18n import _
from mercurial import localrepo
import lfcommands
import lfutil
def reposetup(ui, repo):
# wire repositories should be given new wireproto functions
# by "proto.wirereposetup()" via "hg.wirepeersetupfuncs"
if not repo.local():
return
class lfilesrepo(repo.__class__):
lfstatus = False
def status_nolfiles(self, *args, **kwargs):
return super(lfilesrepo, self).status(*args, **kwargs)
# When lfstatus is set, return a context that gives the names
# of largefiles instead of their corresponding standins and
# identifies the largefiles as always binary, regardless of
# their actual contents.
def __getitem__(self, changeid):
ctx = super(lfilesrepo, self).__getitem__(changeid)
if self.lfstatus:
class lfilesmanifestdict(manifest.manifestdict):
def __contains__(self, filename):
orig = super(lfilesmanifestdict, self).__contains__
return orig(filename) or orig(lfutil.standin(filename))
class lfilesctx(ctx.__class__):
def files(self):
filenames = super(lfilesctx, self).files()
return [lfutil.splitstandin(f) or f for f in filenames]
def manifest(self):
man1 = super(lfilesctx, self).manifest()
man1.__class__ = lfilesmanifestdict
return man1
def filectx(self, path, fileid=None, filelog=None):
orig = super(lfilesctx, self).filectx
try:
if filelog is not None:
result = orig(path, fileid, filelog)
else:
result = orig(path, fileid)
except error.LookupError:
# Adding a null character will cause Mercurial to
# identify this as a binary file.
if filelog is not None:
result = orig(lfutil.standin(path), fileid,
filelog)
else:
result = orig(lfutil.standin(path), fileid)
olddata = result.data
result.data = lambda: olddata() + '\0'
return result
ctx.__class__ = lfilesctx
return ctx
# Figure out the status of big files and insert them into the
# appropriate list in the result. Also removes standin files
# from the listing. Revert to the original status if
# self.lfstatus is False.
# XXX large file status is buggy when used on repo proxy.
# XXX this needs to be investigated.
@localrepo.unfilteredmethod
def status(self, node1='.', node2=None, match=None, ignored=False,
clean=False, unknown=False, listsubrepos=False):
listignored, listclean, listunknown = ignored, clean, unknown
orig = super(lfilesrepo, self).status
if not self.lfstatus:
return orig(node1, node2, match, listignored, listclean,
listunknown, listsubrepos)
# some calls in this function rely on the old version of status
self.lfstatus = False
ctx1 = self[node1]
ctx2 = self[node2]
working = ctx2.rev() is None
parentworking = working and ctx1 == self['.']
def inctx(file, ctx):
try:
if ctx.rev() is None:
return file in ctx.manifest()
ctx[file]
return True
except KeyError:
return False
if match is None:
match = match_.always(self.root, self.getcwd())
wlock = None
try:
try:
# updating the dirstate is optional
# so we don't wait on the lock
wlock = self.wlock(False)
except error.LockError:
pass
# First check if there were files specified on the
# command line. If there were, and none of them were
# largefiles, we should just bail here and let super
# handle it -- thus gaining a big performance boost.
lfdirstate = lfutil.openlfdirstate(ui, self)
if match.files() and not match.anypats():
for f in lfdirstate:
if match(f):
break
else:
return orig(node1, node2, match, listignored, listclean,
listunknown, listsubrepos)
# Create a copy of match that matches standins instead
# of largefiles.
def tostandins(files):
if not working:
return files
newfiles = []
dirstate = self.dirstate
for f in files:
sf = lfutil.standin(f)
if sf in dirstate:
newfiles.append(sf)
elif sf in dirstate.dirs():
# Directory entries could be regular or
# standin, check both
newfiles.extend((f, sf))
else:
newfiles.append(f)
return newfiles
m = copy.copy(match)
m._files = tostandins(m._files)
result = orig(node1, node2, m, ignored, clean, unknown,
listsubrepos)
if working:
def sfindirstate(f):
sf = lfutil.standin(f)
dirstate = self.dirstate
return sf in dirstate or sf in dirstate.dirs()
match._files = [f for f in match._files
if sfindirstate(f)]
# Don't waste time getting the ignored and unknown
# files from lfdirstate
s = lfdirstate.status(match, [], False,
listclean, False)
(unsure, modified, added, removed, missing, _unknown,
_ignored, clean) = s
if parentworking:
for lfile in unsure:
standin = lfutil.standin(lfile)
if standin not in ctx1:
# from second parent
modified.append(lfile)
elif ctx1[standin].data().strip() \
!= lfutil.hashfile(self.wjoin(lfile)):
modified.append(lfile)
else:
if listclean:
clean.append(lfile)
lfdirstate.normal(lfile)
else:
tocheck = unsure + modified + added + clean
modified, added, clean = [], [], []
for lfile in tocheck:
standin = lfutil.standin(lfile)
if inctx(standin, ctx1):
if ctx1[standin].data().strip() != \
lfutil.hashfile(self.wjoin(lfile)):
modified.append(lfile)
elif listclean:
clean.append(lfile)
else:
added.append(lfile)
# Standins no longer found in lfdirstate has been
# removed
for standin in ctx1.walk(lfutil.getstandinmatcher(self)):
lfile = lfutil.splitstandin(standin)
if not match(lfile):
continue
if lfile not in lfdirstate:
removed.append(lfile)
# Filter result lists
result = list(result)
# Largefiles are not really removed when they're
# still in the normal dirstate. Likewise, normal
# files are not really removed if they are still in
# lfdirstate. This happens in merges where files
# change type.
removed = [f for f in removed
if f not in self.dirstate]
result[2] = [f for f in result[2]
if f not in lfdirstate]
lfiles = set(lfdirstate._map)
# Unknown files
result[4] = set(result[4]).difference(lfiles)
# Ignored files
result[5] = set(result[5]).difference(lfiles)
# combine normal files and largefiles
normals = [[fn for fn in filelist
if not lfutil.isstandin(fn)]
for filelist in result]
lfstatus = (modified, added, removed, missing, [], [],
clean)
result = [sorted(list1 + list2)
for (list1, list2) in zip(normals, lfstatus)]
else:
def toname(f):
if lfutil.isstandin(f):
return lfutil.splitstandin(f)
return f
result = [[toname(f) for f in items]
for items in result]
if wlock:
lfdirstate.write()
finally:
if wlock:
wlock.release()
self.lfstatus = True
return result
# As part of committing, copy all of the largefiles into the
# cache.
def commitctx(self, *args, **kwargs):
node = super(lfilesrepo, self).commitctx(*args, **kwargs)
lfutil.copyalltostore(self, node)
return node
# Before commit, largefile standins have not had their
# contents updated to reflect the hash of their largefile.
# Do that here.
def commit(self, text="", user=None, date=None, match=None,
force=False, editor=False, extra={}):
orig = super(lfilesrepo, self).commit
wlock = self.wlock()
try:
# Case 0: Automated committing
#
# While automated committing (like rebase, transplant
# and so on), this code path is used to avoid:
# (1) updating standins, because standins should
# be already updated at this point
# (2) aborting when stadnins are matched by "match",
# because automated committing may specify them directly
#
if getattr(self, "_isrebasing", False) or \
getattr(self, "_istransplanting", False):
result = orig(text=text, user=user, date=date, match=match,
force=force, editor=editor, extra=extra)
if result:
lfdirstate = lfutil.openlfdirstate(ui, self)
for f in self[result].files():
if lfutil.isstandin(f):
lfile = lfutil.splitstandin(f)
lfutil.synclfdirstate(self, lfdirstate, lfile,
False)
lfdirstate.write()
return result
# Case 1: user calls commit with no specific files or
# include/exclude patterns: refresh and commit all files that
# are "dirty".
if ((match is None) or
(not match.anypats() and not match.files())):
# Spend a bit of time here to get a list of files we know
# are modified so we can compare only against those.
# It can cost a lot of time (several seconds)
# otherwise to update all standins if the largefiles are
# large.
lfdirstate = lfutil.openlfdirstate(ui, self)
dirtymatch = match_.always(self.root, self.getcwd())
s = lfdirstate.status(dirtymatch, [], False, False, False)
(unsure, modified, added, removed, _missing, _unknown,
_ignored, _clean) = s
modifiedfiles = unsure + modified + added + removed
lfiles = lfutil.listlfiles(self)
# this only loops through largefiles that exist (not
# removed/renamed)
for lfile in lfiles:
if lfile in modifiedfiles:
if os.path.exists(
self.wjoin(lfutil.standin(lfile))):
# this handles the case where a rebase is being
# performed and the working copy is not updated
# yet.
if os.path.exists(self.wjoin(lfile)):
lfutil.updatestandin(self,
lfutil.standin(lfile))
lfdirstate.normal(lfile)
result = orig(text=text, user=user, date=date, match=match,
force=force, editor=editor, extra=extra)
if result is not None:
for lfile in lfdirstate:
if lfile in modifiedfiles:
if (not os.path.exists(self.wjoin(
lfutil.standin(lfile)))) or \
(not os.path.exists(self.wjoin(lfile))):
lfdirstate.drop(lfile)
# This needs to be after commit; otherwise precommit hooks
# get the wrong status
lfdirstate.write()
return result
lfiles = lfutil.listlfiles(self)
match._files = self._subdirlfs(match.files(), lfiles)
# Case 2: user calls commit with specified patterns: refresh
# any matching big files.
smatcher = lfutil.composestandinmatcher(self, match)
standins = self.dirstate.walk(smatcher, [], False, False)
# No matching big files: get out of the way and pass control to
# the usual commit() method.
if not standins:
return orig(text=text, user=user, date=date, match=match,
force=force, editor=editor, extra=extra)
# Refresh all matching big files. It's possible that the
# commit will end up failing, in which case the big files will
# stay refreshed. No harm done: the user modified them and
# asked to commit them, so sooner or later we're going to
# refresh the standins. Might as well leave them refreshed.
lfdirstate = lfutil.openlfdirstate(ui, self)
for standin in standins:
lfile = lfutil.splitstandin(standin)
if lfdirstate[lfile] != 'r':
lfutil.updatestandin(self, standin)
lfdirstate.normal(lfile)
else:
lfdirstate.drop(lfile)
# Cook up a new matcher that only matches regular files or
# standins corresponding to the big files requested by the
# user. Have to modify _files to prevent commit() from
# complaining "not tracked" for big files.
match = copy.copy(match)
origmatchfn = match.matchfn
# Check both the list of largefiles and the list of
# standins because if a largefile was removed, it
# won't be in the list of largefiles at this point
match._files += sorted(standins)
actualfiles = []
for f in match._files:
fstandin = lfutil.standin(f)
# ignore known largefiles and standins
if f in lfiles or fstandin in standins:
continue
actualfiles.append(f)
match._files = actualfiles
def matchfn(f):
if origmatchfn(f):
return f not in lfiles
else:
return f in standins
match.matchfn = matchfn
result = orig(text=text, user=user, date=date, match=match,
force=force, editor=editor, extra=extra)
# This needs to be after commit; otherwise precommit hooks
# get the wrong status
lfdirstate.write()
return result
finally:
wlock.release()
def push(self, remote, force=False, revs=None, newbranch=False):
if remote.local():
missing = set(self.requirements) - remote.local().supported
if missing:
msg = _("required features are not"
" supported in the destination:"
" %s") % (', '.join(sorted(missing)))
raise util.Abort(msg)
return super(lfilesrepo, self).push(remote, force=force, revs=revs,
newbranch=newbranch)
def _subdirlfs(self, files, lfiles):
'''
Adjust matched file list
If we pass a directory to commit whose only commitable files
are largefiles, the core commit code aborts before finding
the largefiles.
So we do the following:
For directories that only have largefiles as matches,
we explicitly add the largefiles to the match list and remove
the directory.
In other cases, we leave the match list unmodified.
'''
actualfiles = []
dirs = []
regulars = []
for f in files:
if lfutil.isstandin(f + '/'):
raise util.Abort(
_('file "%s" is a largefile standin') % f,
hint=('commit the largefile itself instead'))
# Scan directories
if os.path.isdir(self.wjoin(f)):
dirs.append(f)
else:
regulars.append(f)
for f in dirs:
matcheddir = False
d = self.dirstate.normalize(f) + '/'
# Check for matched normal files
for mf in regulars:
if self.dirstate.normalize(mf).startswith(d):
actualfiles.append(f)
matcheddir = True
break
if not matcheddir:
# If no normal match, manually append
# any matching largefiles
for lf in lfiles:
if self.dirstate.normalize(lf).startswith(d):
actualfiles.append(lf)
if not matcheddir:
actualfiles.append(lfutil.standin(f))
matcheddir = True
# Nothing in dir, so readd it
# and let commit reject it
if not matcheddir:
actualfiles.append(f)
# Always add normal files
actualfiles += regulars
return actualfiles
repo.__class__ = lfilesrepo
def prepushoutgoinghook(local, remote, outgoing):
if outgoing.missing:
toupload = set()
addfunc = lambda fn, lfhash: toupload.add(lfhash)
lfutil.getlfilestoupload(local, outgoing.missing, addfunc)
lfcommands.uploadlfiles(ui, local, remote, toupload)
repo.prepushoutgoinghooks.add("largefiles", prepushoutgoinghook)
def checkrequireslfiles(ui, repo, **kwargs):
if 'largefiles' not in repo.requirements and util.any(
lfutil.shortname+'/' in f[0] for f in repo.store.datafiles()):
repo.requirements.add('largefiles')
repo._writerequirements()
ui.setconfig('hooks', 'changegroup.lfiles', checkrequireslfiles,
'largefiles')
ui.setconfig('hooks', 'commit.lfiles', checkrequireslfiles, 'largefiles')