# 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 types import os from mercurial import context, error, manifest, match as match_, util from mercurial import node as node_ from mercurial.i18n import _ import lfcommands import proto import lfutil def reposetup(ui, repo): # wire repositories should be given new wireproto functions but not the # other largefiles modifications if not repo.local(): return proto.wirereposetup(ui, repo) for name in ('status', 'commitctx', 'commit', 'push'): method = getattr(repo, name) if (isinstance(method, types.FunctionType) and method.func_name == 'wrap'): ui.warn(_('largefiles: repo method %r appears to have already been' ' wrapped by another extension: ' 'largefiles may behave incorrectly\n') % name) 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): if super(lfilesmanifestdict, self).__contains__(filename): return True return super(lfilesmanifestdict, self).__contains__(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): try: if filelog is not None: result = super(lfilesctx, self).filectx( path, fileid, filelog) else: result = super(lfilesctx, self).filectx( 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 = super(lfilesctx, self).filectx( lfutil.standin(path), fileid, filelog) else: result = super(lfilesctx, self).filectx( 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. def status(self, node1='.', node2=None, match=None, ignored=False, clean=False, unknown=False, listsubrepos=False): listignored, listclean, listunknown = ignored, clean, unknown if not self.lfstatus: return super(lfilesrepo, self).status(node1, node2, match, listignored, listclean, listunknown, listsubrepos) else: # some calls in this function rely on the old version of status self.lfstatus = False if isinstance(node1, context.changectx): ctx1 = node1 else: ctx1 = self[node1] if isinstance(node2, context.changectx): ctx2 = node2 else: 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()) # 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 super(lfilesrepo, self).status(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 # Create a function that we can use to override what is # normally the ignore matcher. We've already checked # for ignored files on the first dirstate walk, and # unnecessarily re-checking here causes a huge performance # hit because lfdirstate only knows about largefiles def _ignoreoverride(self): return False m = copy.copy(match) m._files = tostandins(m._files) result = super(lfilesrepo, self).status(node1, node2, m, ignored, clean, unknown, listsubrepos) if working: try: # Any non-largefiles that were explicitly listed must be # taken out or lfdirstate.status will report an error. # The status of these files was already computed using # super's status. # Override lfdirstate's ignore matcher to not do # anything origignore = lfdirstate._ignore lfdirstate._ignore = _ignoreoverride 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 again; we already have them s = lfdirstate.status(match, [], False, listclean, False) (unsure, modified, added, removed, missing, unknown, ignored, clean) = s # Replace the list of ignored and unknown files with # the previously calculated lists, and strip out the # largefiles lfiles = set(lfdirstate._map) ignored = set(result[5]).difference(lfiles) unknown = set(result[4]).difference(lfiles) 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: 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) else: clean.append(lfile) else: added.append(lfile) finally: # Replace the original ignore function lfdirstate._ignore = origignore for standin in ctx1.manifest(): if not lfutil.isstandin(standin): continue 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 it's 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] # Unknown files unknown = set(unknown).difference(ignored) result[4] = [f for f in unknown if (self.dirstate[f] == '?' and not lfutil.isstandin(f))] # Ignored files were calculated earlier by the dirstate, # and we already stripped out the largefiles from the list result[5] = ignored # combine normal files and largefiles normals = [[fn for fn in filelist if not lfutil.isstandin(fn)] for filelist in result] lfiles = (modified, added, removed, missing, [], [], clean) result = [sorted(list1 + list2) for (list1, list2) in zip(normals, lfiles)] 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] lfdirstate.write() if not listunknown: result[4] = [] if not listignored: result[5] = [] if not listclean: result[6] = [] 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: Rebase or Transplant # We have to take the time to pull down the new largefiles now. # Otherwise, any largefiles that were modified in the # destination changesets get overwritten, either by the rebase # or in the first commit after the rebase or transplant. # updatelfiles will update the dirstate to mark any pulled # largefiles as modified if getattr(self, "_isrebasing", False) or \ getattr(self, "_istransplanting", False): lfcommands.updatelfiles(self.ui, self, filelist=None, printmessage=False) result = orig(text=text, user=user, date=date, match=match, force=force, editor=editor, extra=extra) 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) modifiedfiles = [] for i in s: modifiedfiles.extend(i) 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 = lfutil.dirstatewalk(self.dirstate, smatcher) # 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 # append directory separator to avoid collisions if not fstandin.endswith(os.sep): fstandin += os.sep 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): o = lfutil.findoutgoing(self, remote, force) if o: toupload = set() o = self.changelog.nodesbetween(o, revs)[0] for n in o: parents = [p for p in self.changelog.parents(n) if p != node_.nullid] ctx = self[n] files = set(ctx.files()) if len(parents) == 2: mc = ctx.manifest() mp1 = ctx.parents()[0].manifest() mp2 = ctx.parents()[1].manifest() for f in mp1: if f not in mc: files.add(f) for f in mp2: if f not in mc: files.add(f) for f in mc: if mc[f] != mp1.get(f, None) or mc[f] != mp2.get(f, None): files.add(f) toupload = toupload.union( set([ctx[f].data().strip() for f in files if lfutil.isstandin(f) and f in ctx])) lfcommands.uploadlfiles(ui, self, remote, toupload) return super(lfilesrepo, self).push(remote, force, revs, 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 matchlist 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 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) ui.setconfig('hooks', 'commit.lfiles', checkrequireslfiles)