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# Copyright 2009-2010 Gregory P. Ward
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# Copyright 2009-2010 Intelerad Medical Systems Incorporated
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# Copyright 2010-2011 Fog Creek Software
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# Copyright 2010-2011 Unity Technologies
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''setup for largefiles repositories: reposetup'''
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import copy
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import os
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from mercurial import error, match as match_, util
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from mercurial.i18n import _
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from mercurial import scmutil, localrepo
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import lfcommands
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import lfutil
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def reposetup(ui, repo):
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# wire repositories should be given new wireproto functions
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# by "proto.wirereposetup()" via "hg.wirepeersetupfuncs"
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if not repo.local():
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return
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class lfilesrepo(repo.__class__):
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# the mark to examine whether "repo" object enables largefiles or not
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_largefilesenabled = True
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lfstatus = False
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def status_nolfiles(self, *args, **kwargs):
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return super(lfilesrepo, self).status(*args, **kwargs)
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# When lfstatus is set, return a context that gives the names
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# of largefiles instead of their corresponding standins and
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# identifies the largefiles as always binary, regardless of
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# their actual contents.
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def __getitem__(self, changeid):
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ctx = super(lfilesrepo, self).__getitem__(changeid)
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if self.lfstatus:
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class lfilesctx(ctx.__class__):
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def files(self):
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filenames = super(lfilesctx, self).files()
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return [lfutil.splitstandin(f) or f for f in filenames]
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def manifest(self):
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man1 = super(lfilesctx, self).manifest()
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class lfilesmanifest(man1.__class__):
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def __contains__(self, filename):
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orig = super(lfilesmanifest, self).__contains__
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return (orig(filename) or
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orig(lfutil.standin(filename)))
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man1.__class__ = lfilesmanifest
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return man1
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def filectx(self, path, fileid=None, filelog=None):
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orig = super(lfilesctx, self).filectx
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try:
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if filelog is not None:
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result = orig(path, fileid, filelog)
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else:
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result = orig(path, fileid)
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except error.LookupError:
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# Adding a null character will cause Mercurial to
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# identify this as a binary file.
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if filelog is not None:
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result = orig(lfutil.standin(path), fileid,
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filelog)
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else:
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result = orig(lfutil.standin(path), fileid)
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olddata = result.data
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result.data = lambda: olddata() + '\0'
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return result
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ctx.__class__ = lfilesctx
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return ctx
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# Figure out the status of big files and insert them into the
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# appropriate list in the result. Also removes standin files
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# from the listing. Revert to the original status if
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# self.lfstatus is False.
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# XXX large file status is buggy when used on repo proxy.
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# XXX this needs to be investigated.
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@localrepo.unfilteredmethod
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def status(self, node1='.', node2=None, match=None, ignored=False,
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clean=False, unknown=False, listsubrepos=False):
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listignored, listclean, listunknown = ignored, clean, unknown
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orig = super(lfilesrepo, self).status
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if not self.lfstatus:
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return orig(node1, node2, match, listignored, listclean,
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listunknown, listsubrepos)
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# some calls in this function rely on the old version of status
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self.lfstatus = False
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ctx1 = self[node1]
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ctx2 = self[node2]
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working = ctx2.rev() is None
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parentworking = working and ctx1 == self['.']
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if match is None:
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match = match_.always(self.root, self.getcwd())
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wlock = None
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try:
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try:
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# updating the dirstate is optional
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# so we don't wait on the lock
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wlock = self.wlock(False)
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except error.LockError:
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pass
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# First check if paths or patterns were specified on the
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# command line. If there were, and they don't match any
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# largefiles, we should just bail here and let super
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# handle it -- thus gaining a big performance boost.
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lfdirstate = lfutil.openlfdirstate(ui, self)
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if not match.always():
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for f in lfdirstate:
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if match(f):
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break
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else:
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return orig(node1, node2, match, listignored, listclean,
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listunknown, listsubrepos)
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# Create a copy of match that matches standins instead
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# of largefiles.
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def tostandins(files):
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if not working:
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return files
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newfiles = []
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dirstate = self.dirstate
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for f in files:
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sf = lfutil.standin(f)
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if sf in dirstate:
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newfiles.append(sf)
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elif sf in dirstate.dirs():
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# Directory entries could be regular or
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# standin, check both
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newfiles.extend((f, sf))
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else:
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newfiles.append(f)
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return newfiles
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m = copy.copy(match)
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m._files = tostandins(m._files)
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result = orig(node1, node2, m, ignored, clean, unknown,
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listsubrepos)
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if working:
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def sfindirstate(f):
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sf = lfutil.standin(f)
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dirstate = self.dirstate
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return sf in dirstate or sf in dirstate.dirs()
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match._files = [f for f in match._files
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if sfindirstate(f)]
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# Don't waste time getting the ignored and unknown
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# files from lfdirstate
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unsure, s = lfdirstate.status(match, [], False, listclean,
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False)
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(modified, added, removed, clean) = (s.modified, s.added,
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s.removed, s.clean)
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if parentworking:
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for lfile in unsure:
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standin = lfutil.standin(lfile)
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if standin not in ctx1:
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# from second parent
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modified.append(lfile)
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elif ctx1[standin].data().strip() \
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!= lfutil.hashfile(self.wjoin(lfile)):
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modified.append(lfile)
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else:
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if listclean:
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clean.append(lfile)
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lfdirstate.normal(lfile)
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else:
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tocheck = unsure + modified + added + clean
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modified, added, clean = [], [], []
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checkexec = self.dirstate._checkexec
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for lfile in tocheck:
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standin = lfutil.standin(lfile)
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if standin in ctx1:
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abslfile = self.wjoin(lfile)
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if ((ctx1[standin].data().strip() !=
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lfutil.hashfile(abslfile)) or
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(checkexec and
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('x' in ctx1.flags(standin)) !=
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bool(lfutil.getexecutable(abslfile)))):
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modified.append(lfile)
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elif listclean:
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clean.append(lfile)
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else:
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added.append(lfile)
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# at this point, 'removed' contains largefiles
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# marked as 'R' in the working context.
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# then, largefiles not managed also in the target
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# context should be excluded from 'removed'.
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removed = [lfile for lfile in removed
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if lfutil.standin(lfile) in ctx1]
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# Standins no longer found in lfdirstate has been
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# removed
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for standin in ctx1.walk(lfutil.getstandinmatcher(self)):
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lfile = lfutil.splitstandin(standin)
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if not match(lfile):
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continue
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if lfile not in lfdirstate:
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removed.append(lfile)
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# Filter result lists
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result = list(result)
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# Largefiles are not really removed when they're
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# still in the normal dirstate. Likewise, normal
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# files are not really removed if they are still in
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# lfdirstate. This happens in merges where files
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# change type.
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removed = [f for f in removed
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if f not in self.dirstate]
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result[2] = [f for f in result[2]
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if f not in lfdirstate]
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lfiles = set(lfdirstate._map)
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# Unknown files
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result[4] = set(result[4]).difference(lfiles)
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# Ignored files
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result[5] = set(result[5]).difference(lfiles)
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# combine normal files and largefiles
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normals = [[fn for fn in filelist
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if not lfutil.isstandin(fn)]
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for filelist in result]
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lfstatus = (modified, added, removed, s.deleted, [], [],
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clean)
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result = [sorted(list1 + list2)
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for (list1, list2) in zip(normals, lfstatus)]
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else: # not against working directory
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result = [[lfutil.splitstandin(f) or f for f in items]
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for items in result]
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if wlock:
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lfdirstate.write()
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finally:
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if wlock:
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wlock.release()
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self.lfstatus = True
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return scmutil.status(*result)
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def commitctx(self, ctx, *args, **kwargs):
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node = super(lfilesrepo, self).commitctx(ctx, *args, **kwargs)
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class lfilesctx(ctx.__class__):
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def markcommitted(self, node):
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orig = super(lfilesctx, self).markcommitted
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return lfutil.markcommitted(orig, self, node)
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ctx.__class__ = lfilesctx
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return node
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# Before commit, largefile standins have not had their
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# contents updated to reflect the hash of their largefile.
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# Do that here.
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def commit(self, text="", user=None, date=None, match=None,
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force=False, editor=False, extra={}):
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orig = super(lfilesrepo, self).commit
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wlock = self.wlock()
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try:
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lfcommithook = self._lfcommithooks[-1]
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match = lfcommithook(self, match)
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result = orig(text=text, user=user, date=date, match=match,
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force=force, editor=editor, extra=extra)
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return result
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finally:
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wlock.release()
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def push(self, remote, force=False, revs=None, newbranch=False):
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if remote.local():
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missing = set(self.requirements) - remote.local().supported
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if missing:
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msg = _("required features are not"
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" supported in the destination:"
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" %s") % (', '.join(sorted(missing)))
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raise util.Abort(msg)
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return super(lfilesrepo, self).push(remote, force=force, revs=revs,
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newbranch=newbranch)
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# TODO: _subdirlfs should be moved into "lfutil.py", because
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# it is referred only from "lfutil.updatestandinsbymatch"
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def _subdirlfs(self, files, lfiles):
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'''
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Adjust matched file list
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If we pass a directory to commit whose only committable files
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are largefiles, the core commit code aborts before finding
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the largefiles.
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So we do the following:
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For directories that only have largefiles as matches,
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we explicitly add the largefiles to the match list and remove
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the directory.
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In other cases, we leave the match list unmodified.
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'''
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actualfiles = []
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dirs = []
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regulars = []
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for f in files:
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if lfutil.isstandin(f + '/'):
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raise util.Abort(
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_('file "%s" is a largefile standin') % f,
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hint=('commit the largefile itself instead'))
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# Scan directories
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if os.path.isdir(self.wjoin(f)):
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dirs.append(f)
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else:
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regulars.append(f)
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for f in dirs:
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matcheddir = False
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d = self.dirstate.normalize(f) + '/'
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# Check for matched normal files
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for mf in regulars:
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if self.dirstate.normalize(mf).startswith(d):
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actualfiles.append(f)
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matcheddir = True
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break
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if not matcheddir:
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# If no normal match, manually append
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# any matching largefiles
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for lf in lfiles:
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if self.dirstate.normalize(lf).startswith(d):
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actualfiles.append(lf)
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if not matcheddir:
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# There may still be normal files in the dir, so
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# add a directory to the list, which
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# forces status/dirstate to walk all files and
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# call the match function on the matcher, even
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# on case sensitive filesystems.
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actualfiles.append('.')
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matcheddir = True
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# Nothing in dir, so readd it
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# and let commit reject it
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if not matcheddir:
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actualfiles.append(f)
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# Always add normal files
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actualfiles += regulars
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return actualfiles
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repo.__class__ = lfilesrepo
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# stack of hooks being executed before committing.
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# only last element ("_lfcommithooks[-1]") is used for each committing.
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repo._lfcommithooks = [lfutil.updatestandinsbymatch]
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# Stack of status writer functions taking "*msg, **opts" arguments
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# like "ui.status()". Only last element ("_lfstatuswriters[-1]")
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# is used to write status out.
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repo._lfstatuswriters = [ui.status]
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def prepushoutgoinghook(local, remote, outgoing):
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if outgoing.missing:
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toupload = set()
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addfunc = lambda fn, lfhash: toupload.add(lfhash)
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lfutil.getlfilestoupload(local, outgoing.missing, addfunc)
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lfcommands.uploadlfiles(ui, local, remote, toupload)
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repo.prepushoutgoinghooks.add("largefiles", prepushoutgoinghook)
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def checkrequireslfiles(ui, repo, **kwargs):
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if 'largefiles' not in repo.requirements and any(
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lfutil.shortname+'/' in f[0] for f in repo.store.datafiles()):
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repo.requirements.add('largefiles')
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repo._writerequirements()
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ui.setconfig('hooks', 'changegroup.lfiles', checkrequireslfiles,
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'largefiles')
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ui.setconfig('hooks', 'commit.lfiles', checkrequireslfiles, 'largefiles')
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