# shelve.py - save/restore working directory state # # Copyright 2013 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """save and restore changes to the working directory The "hg shelve" command saves changes made to the working directory and reverts those changes, resetting the working directory to a clean state. Later on, the "hg unshelve" command restores the changes saved by "hg shelve". Changes can be restored even after updating to a different parent, in which case Mercurial's merge machinery will resolve any conflicts if necessary. You can have more than one shelved change outstanding at a time; each shelved change has a distinct name. For details, see the help for "hg shelve". """ from __future__ import annotations import collections import io import itertools import stat from typing import ( Any, Dict, Iterable, Iterator, List, Sequence, Tuple, ) from .i18n import _ from .node import ( bin, hex, nullrev, ) from . import ( bookmarks, bundle2, changegroup, cmdutil, context as contextmod, discovery, error, exchange, hg, lock as lockmod, mdiff, merge, mergestate as mergestatemod, patch, phases, pycompat, repair, scmutil, templatefilters, util, vfs as vfsmod, ) from .utils import ( dateutil, stringutil, ) backupdir = b'shelve-backup' shelvedir = b'shelved' shelvefileextensions = [b'hg', b'patch', b'shelve'] # we never need the user, so we use a # generic user for all shelve operations shelveuser = b'shelve@localhost' class ShelfDir: def __init__(self, repo, for_backups: bool = False) -> None: if for_backups: self.vfs = vfsmod.vfs(repo.vfs.join(backupdir)) else: self.vfs = vfsmod.vfs(repo.vfs.join(shelvedir)) def get(self, name: bytes) -> "Shelf": return Shelf(self.vfs, name) def listshelves(self) -> List[Tuple[float, bytes]]: """return all shelves in repo as list of (time, name)""" try: names = self.vfs.listdir() except FileNotFoundError: return [] info = [] seen = set() for filename in names: name = filename.rsplit(b'.', 1)[0] if name in seen: continue seen.add(name) shelf = self.get(name) if not shelf.exists(): continue mtime = shelf.mtime() info.append((mtime, name)) return sorted(info, reverse=True) def _use_internal_phase(repo) -> bool: return ( phases.supportinternal(repo) and repo.ui.config(b'shelve', b'store') == b'internal' ) def _target_phase(repo) -> int: return phases.internal if _use_internal_phase(repo) else phases.secret class Shelf: """Represents a shelf, including possibly multiple files storing it. Old shelves will have a .patch and a .hg file. Newer shelves will also have a .shelve file. This class abstracts away some of the differences and lets you work with the shelf as a whole. """ def __init__(self, vfs: vfsmod.vfs, name: bytes) -> None: self.vfs = vfs self.name = name def exists(self) -> bool: return self._exists(b'.shelve') or self._exists(b'.patch', b'.hg') def _exists(self, *exts: bytes) -> bool: return all(self.vfs.exists(self.name + ext) for ext in exts) def mtime(self) -> float: try: return self._stat(b'.shelve')[stat.ST_MTIME] except FileNotFoundError: return self._stat(b'.patch')[stat.ST_MTIME] def _stat(self, ext: bytes): return self.vfs.stat(self.name + ext) def writeinfo(self, info) -> None: scmutil.simplekeyvaluefile(self.vfs, self.name + b'.shelve').write(info) def hasinfo(self) -> bool: return self.vfs.exists(self.name + b'.shelve') def readinfo(self): return scmutil.simplekeyvaluefile( self.vfs, self.name + b'.shelve' ).read() def writebundle(self, repo, bases, node) -> None: cgversion = changegroup.safeversion(repo) if cgversion == b'01': btype = b'HG10BZ' compression = None else: btype = b'HG20' compression = b'BZ' repo = repo.unfiltered() outgoing = discovery.outgoing( repo, missingroots=bases, ancestorsof=[node] ) cg = changegroup.makechangegroup(repo, outgoing, cgversion, b'shelve') bundle_filename = self.vfs.join(self.name + b'.hg') bundle2.writebundle( repo.ui, cg, bundle_filename, btype, self.vfs, compression=compression, ) def applybundle(self, repo, tr) -> contextmod.changectx: filename = self.name + b'.hg' fp = self.vfs(filename) try: targetphase = _target_phase(repo) gen = exchange.readbundle(repo.ui, fp, filename, self.vfs) pretip = repo[b'tip'] bundle2.applybundle( repo, gen, tr, source=b'unshelve', url=b'bundle:' + self.vfs.join(filename), targetphase=targetphase, ) shelvectx = repo[b'tip'] if pretip == shelvectx: shelverev = tr.changes[b'revduplicates'][-1] shelvectx = repo[shelverev] return shelvectx finally: fp.close() def open_patch(self, mode: bytes = b'rb'): return self.vfs(self.name + b'.patch', mode) def patch_from_node(self, repo, node) -> io.BytesIO: repo = repo.unfiltered() match = _optimized_match(repo, node) fp = io.BytesIO() cmdutil.exportfile( repo, [node], fp, opts=mdiff.diffopts(git=True), match=match, ) fp.seek(0) return fp def load_patch(self, repo): try: # prefer node-based shelf return self.patch_from_node(repo, self.readinfo()[b'node']) except (FileNotFoundError, error.RepoLookupError): return self.open_patch() def _backupfilename(self, backupvfs: vfsmod.vfs, filename: bytes) -> bytes: def gennames(base: bytes): yield base base, ext = base.rsplit(b'.', 1) for i in itertools.count(1): yield b'%s-%d.%s' % (base, i, ext) for n in gennames(filename): if not backupvfs.exists(n): return backupvfs.join(n) # Help pytype- gennames() yields infinitely raise error.ProgrammingError("unreachable") def movetobackup(self, backupvfs: vfsmod.vfs) -> None: if not backupvfs.isdir(): backupvfs.makedir() for suffix in shelvefileextensions: filename = self.name + b'.' + suffix if self.vfs.exists(filename): util.rename( self.vfs.join(filename), self._backupfilename(backupvfs, filename), ) def delete(self) -> None: for ext in shelvefileextensions: self.vfs.tryunlink(self.name + b'.' + ext) def changed_files(self, ui, repo): try: ctx = repo.unfiltered()[self.readinfo()[b'node']] return ctx.files() except (FileNotFoundError, error.RepoLookupError): filename = self.vfs.join(self.name + b'.patch') return patch.changedfiles(ui, repo, filename) def _optimized_match(repo, node: bytes): """ Create a matcher so that prefetch doesn't attempt to fetch the entire repository pointlessly, and as an optimisation for movedirstate, if needed. """ return scmutil.matchfiles(repo, repo[node].files()) class shelvedstate: """Handle persistence during unshelving operations. Handles saving and restoring a shelved state. Ensures that different versions of a shelved state are possible and handles them appropriately. """ # Class-wide constants _version = 2 _filename = b'shelvedstate' _keep = b'keep' _nokeep = b'nokeep' # colon is essential to differentiate from a real bookmark name _noactivebook = b':no-active-bookmark' _interactive = b'interactive' # Per instance attrs name: bytes wctx: contextmod.workingctx pendingctx: contextmod.changectx parents: List[bytes] nodestoremove: List[bytes] branchtorestore: bytes keep: bool activebookmark: bytes interactive: bool @classmethod def _verifyandtransform(cls, d: Dict[bytes, Any]) -> None: """Some basic shelvestate syntactic verification and transformation""" try: d[b'originalwctx'] = bin(d[b'originalwctx']) d[b'pendingctx'] = bin(d[b'pendingctx']) d[b'parents'] = [bin(h) for h in d[b'parents'].split(b' ') if h] d[b'nodestoremove'] = [ bin(h) for h in d[b'nodestoremove'].split(b' ') if h ] except (ValueError, KeyError) as err: raise error.CorruptedState(stringutil.forcebytestr(err)) @classmethod def _getversion(cls, repo) -> int: """Read version information from shelvestate file""" fp = repo.vfs(cls._filename) try: version = int(fp.readline().strip()) except ValueError as err: raise error.CorruptedState(stringutil.forcebytestr(err)) finally: fp.close() return version @classmethod def _readold(cls, repo) -> Dict[bytes, Any]: """Read the old position-based version of a shelvestate file""" # Order is important, because old shelvestate file uses it # to detemine values of fields (i.g. name is on the second line, # originalwctx is on the third and so forth). Please do not change. keys = [ b'version', b'name', b'originalwctx', b'pendingctx', b'parents', b'nodestoremove', b'branchtorestore', b'keep', b'activebook', ] # this is executed only seldomly, so it is not a big deal # that we open this file twice fp = repo.vfs(cls._filename) d = {} try: for key in keys: d[key] = fp.readline().strip() finally: fp.close() return d @classmethod def load(cls, repo): version = cls._getversion(repo) if version < cls._version: d = cls._readold(repo) elif version == cls._version: d = scmutil.simplekeyvaluefile(repo.vfs, cls._filename).read( firstlinenonkeyval=True ) else: raise error.Abort( _( b'this version of shelve is incompatible ' b'with the version used in this repo' ) ) cls._verifyandtransform(d) try: obj = cls() obj.name = d[b'name'] obj.wctx = repo[d[b'originalwctx']] obj.pendingctx = repo[d[b'pendingctx']] obj.parents = d[b'parents'] obj.nodestoremove = d[b'nodestoremove'] obj.branchtorestore = d.get(b'branchtorestore', b'') obj.keep = d.get(b'keep') == cls._keep obj.activebookmark = b'' if d.get(b'activebook', b'') != cls._noactivebook: obj.activebookmark = d.get(b'activebook', b'') obj.interactive = d.get(b'interactive') == cls._interactive except (error.RepoLookupError, KeyError) as err: raise error.CorruptedState(stringutil.forcebytestr(err)) return obj @classmethod def save( cls, repo, name: bytes, originalwctx: contextmod.workingctx, pendingctx: contextmod.changectx, nodestoremove: List[bytes], branchtorestore: bytes, keep: bool = False, activebook: bytes = b'', interactive: bool = False, ) -> None: info = { b"name": name, b"originalwctx": hex(originalwctx.node()), b"pendingctx": hex(pendingctx.node()), b"parents": b' '.join([hex(p) for p in repo.dirstate.parents()]), b"nodestoremove": b' '.join([hex(n) for n in nodestoremove]), b"branchtorestore": branchtorestore, b"keep": cls._keep if keep else cls._nokeep, b"activebook": activebook or cls._noactivebook, } if interactive: info[b'interactive'] = cls._interactive scmutil.simplekeyvaluefile(repo.vfs, cls._filename).write( info, firstline=(b"%d" % cls._version) ) @classmethod def clear(cls, repo) -> None: repo.vfs.unlinkpath(cls._filename, ignoremissing=True) def cleanupoldbackups(repo) -> None: maxbackups = repo.ui.configint(b'shelve', b'maxbackups') backup_dir = ShelfDir(repo, for_backups=True) hgfiles = backup_dir.listshelves() if maxbackups > 0 and maxbackups < len(hgfiles): bordermtime = hgfiles[maxbackups - 1][0] else: bordermtime = None for mtime, name in hgfiles[maxbackups:]: if mtime == bordermtime: # keep it, because timestamp can't decide exact order of backups continue backup_dir.get(name).delete() def _backupactivebookmark(repo) -> bytes: activebookmark = repo._activebookmark if activebookmark: bookmarks.deactivate(repo) return activebookmark def _restoreactivebookmark(repo, mark) -> None: if mark: bookmarks.activate(repo, mark) def _aborttransaction(repo, tr) -> None: """Abort current transaction for shelve/unshelve, but keep dirstate""" # disable the transaction invalidation of the dirstate, to preserve the # current change in memory. ds = repo.dirstate # The assert below check that nobody else did such wrapping. # # These is not such other wrapping currently, but if someone try to # implement one in the future, this will explicitly break here instead of # misbehaving in subtle ways. current_branch = ds.branch() assert 'invalidate' not in vars(ds) try: # note : we could simply disable the transaction abort callback, but # other code also tries to rollback and invalidate this. ds.invalidate = lambda: None tr.abort() finally: del ds.invalidate # manually write the change in memory since we can no longer rely on the # transaction to do so. assert repo.currenttransaction() is None repo.dirstate.write(None) ds.setbranch(current_branch, None) def getshelvename(repo, parent, opts) -> bytes: """Decide on the name this shelve is going to have""" def gennames(): yield label for i in itertools.count(1): yield b'%s-%02d' % (label, i) name = opts.get(b'name') label = repo._activebookmark or parent.branch() or b'default' # slashes aren't allowed in filenames, therefore we rename it label = label.replace(b'/', b'_') label = label.replace(b'\\', b'_') # filenames must not start with '.' as it should not be hidden if label.startswith(b'.'): label = label.replace(b'.', b'_', 1) if name: if ShelfDir(repo).get(name).exists(): e = _(b"a shelved change named '%s' already exists") % name raise error.Abort(e) # ensure we are not creating a subdirectory or a hidden file if b'/' in name or b'\\' in name: raise error.Abort( _(b'shelved change names can not contain slashes') ) if name.startswith(b'.'): raise error.Abort(_(b"shelved change names can not start with '.'")) else: shelf_dir = ShelfDir(repo) for n in gennames(): if not shelf_dir.get(n).exists(): name = n break return name def mutableancestors(ctx) -> Iterator[bytes]: """return all mutable ancestors for ctx (included) Much faster than the revset ancestors(ctx) & draft()""" seen = {nullrev} visit = collections.deque() visit.append(ctx) while visit: ctx = visit.popleft() yield ctx.node() for parent in ctx.parents(): rev = parent.rev() if rev not in seen: seen.add(rev) if parent.mutable(): visit.append(parent) def getcommitfunc(extra, interactive: bool, editor: bool = False): def commitfunc(ui, repo, message, match, opts): hasmq = hasattr(repo, 'mq') if hasmq: saved, repo.mq.checkapplied = repo.mq.checkapplied, False targetphase = _target_phase(repo) overrides = {(b'phases', b'new-commit'): targetphase} try: editor_ = False if editor: editor_ = cmdutil.getcommiteditor( editform=b'shelve.shelve', **pycompat.strkwargs(opts) ) with repo.ui.configoverride(overrides): return repo.commit( message, shelveuser, opts.get(b'date'), match, editor=editor_, extra=extra, ) finally: if hasmq: repo.mq.checkapplied = saved def interactivecommitfunc(ui, repo, *pats, **opts): opts = pycompat.byteskwargs(opts) match = scmutil.match(repo[b'.'], pats, {}) message = opts[b'message'] return commitfunc(ui, repo, message, match, opts) return interactivecommitfunc if interactive else commitfunc def _nothingtoshelvemessaging(ui, repo, pats, opts) -> None: stat = repo.status(match=scmutil.match(repo[None], pats, opts)) if stat.deleted: ui.status( _(b"nothing changed (%d missing files, see 'hg status')\n") % len(stat.deleted) ) else: ui.status(_(b"nothing changed\n")) def _shelvecreatedcommit(repo, node: bytes, name: bytes, match) -> None: info = {b'node': hex(node)} shelf = ShelfDir(repo).get(name) shelf.writeinfo(info) bases = list(mutableancestors(repo[node])) shelf.writebundle(repo, bases, node) with shelf.open_patch(b'wb') as fp: cmdutil.exportfile( repo, [node], fp, opts=mdiff.diffopts(git=True), match=match ) def _includeunknownfiles(repo, pats, opts, extra) -> None: s = repo.status(match=scmutil.match(repo[None], pats, opts), unknown=True) if s.unknown: extra[b'shelve_unknown'] = b'\0'.join(s.unknown) repo[None].add(s.unknown) def _finishshelve(repo, tr) -> None: if _use_internal_phase(repo): tr.close() else: _aborttransaction(repo, tr) def createcmd(ui, repo, pats, opts): """subcommand that creates a new shelve""" with repo.wlock(): cmdutil.checkunfinished(repo) return _docreatecmd(ui, repo, pats, opts) def _docreatecmd(ui, repo, pats, opts): wctx = repo[None] parents = wctx.parents() parent = parents[0] origbranch = wctx.branch() if parent.rev() != nullrev: desc = b"changes to: %s" % parent.description().split(b'\n', 1)[0] else: desc = b'(changes in empty repository)' if not opts.get(b'message'): opts[b'message'] = desc lock = tr = activebookmark = None try: lock = repo.lock() # use an uncommitted transaction to generate the bundle to avoid # pull races. ensure we don't print the abort message to stderr. tr = repo.transaction(b'shelve', report=lambda x: None) interactive = opts.get(b'interactive', False) includeunknown = opts.get(b'unknown', False) and not opts.get( b'addremove', False ) name = getshelvename(repo, parent, opts) activebookmark = _backupactivebookmark(repo) extra = {b'internal': b'shelve'} if includeunknown: with repo.dirstate.changing_files(repo): _includeunknownfiles(repo, pats, opts, extra) if _iswctxonnewbranch(repo) and not _isbareshelve(pats, opts): # In non-bare shelve we don't store newly created branch # at bundled commit repo.dirstate.setbranch( repo[b'.'].branch(), repo.currenttransaction() ) commitfunc = getcommitfunc(extra, interactive, editor=True) if not interactive: node = cmdutil.commit(ui, repo, commitfunc, pats, opts) else: node = cmdutil.dorecord( ui, repo, commitfunc, None, False, cmdutil.recordfilter, *pats, **pycompat.strkwargs(opts), ) if not node: _nothingtoshelvemessaging(ui, repo, pats, opts) return 1 match = _optimized_match(repo, node) _shelvecreatedcommit(repo, node, name, match) ui.status(_(b'shelved as %s\n') % name) if opts[b'keep']: with repo.dirstate.changing_parents(repo): scmutil.movedirstate(repo, parent, match) else: hg.update(repo, parent.node()) ms = mergestatemod.mergestate.read(repo) if not ms.unresolvedcount(): ms.reset() if origbranch != repo[b'.'].branch() and not _isbareshelve(pats, opts): repo.dirstate.setbranch(origbranch, repo.currenttransaction()) _finishshelve(repo, tr) finally: _restoreactivebookmark(repo, activebookmark) lockmod.release(tr, lock) def _isbareshelve(pats, opts) -> bool: return ( not pats and not opts.get(b'interactive', False) and not opts.get(b'include', False) and not opts.get(b'exclude', False) ) def _iswctxonnewbranch(repo) -> bool: return repo[None].branch() != repo[b'.'].branch() def cleanupcmd(ui, repo) -> None: """subcommand that deletes all shelves""" with repo.wlock(): shelf_dir = ShelfDir(repo) backupvfs = vfsmod.vfs(repo.vfs.join(backupdir)) for _mtime, name in shelf_dir.listshelves(): shelf_dir.get(name).movetobackup(backupvfs) cleanupoldbackups(repo) def deletecmd(ui, repo, pats) -> None: """subcommand that deletes a specific shelve""" if not pats: raise error.InputError(_(b'no shelved changes specified!')) with repo.wlock(): backupvfs = vfsmod.vfs(repo.vfs.join(backupdir)) for name in pats: shelf = ShelfDir(repo).get(name) if not shelf.exists(): raise error.InputError( _(b"shelved change '%s' not found") % name ) shelf.movetobackup(backupvfs) cleanupoldbackups(repo) def listcmd(ui, repo, pats: Iterable[bytes], opts) -> None: """subcommand that displays the list of shelves""" pats = set(pats) width = 80 if not ui.plain(): width = ui.termwidth() namelabel = b'shelve.newest' ui.pager(b'shelve') shelf_dir = ShelfDir(repo) for mtime, name in shelf_dir.listshelves(): if pats and name not in pats: continue ui.write(name, label=namelabel) namelabel = b'shelve.name' if ui.quiet: ui.write(b'\n') continue ui.write(b' ' * (16 - len(name))) used = 16 date = dateutil.makedate(mtime) age = b'(%s)' % templatefilters.age(date, abbrev=True) ui.write(age, label=b'shelve.age') ui.write(b' ' * (12 - len(age))) used += 12 with shelf_dir.get(name).load_patch(repo) as fp: while True: line = fp.readline() if not line: break if not line.startswith(b'#'): desc = line.rstrip() if ui.formatted(): desc = stringutil.ellipsis(desc, width - used) ui.write(desc) break ui.write(b'\n') if not (opts[b'patch'] or opts[b'stat']): continue difflines = fp.readlines() if opts[b'patch']: for chunk, label in patch.difflabel(iter, difflines): ui.write(chunk, label=label) if opts[b'stat']: for chunk, label in patch.diffstatui(difflines, width=width): ui.write(chunk, label=label) def patchcmds(ui, repo, pats: Sequence[bytes], opts) -> None: """subcommand that displays shelves""" shelf_dir = ShelfDir(repo) if len(pats) == 0: shelves = shelf_dir.listshelves() if not shelves: raise error.Abort(_(b"there are no shelves to show")) mtime, name = shelves[0] pats = [name] for shelfname in pats: if not shelf_dir.get(shelfname).exists(): raise error.Abort(_(b"cannot find shelf %s") % shelfname) listcmd(ui, repo, pats, opts) def checkparents(repo, state: shelvedstate) -> None: """check parent while resuming an unshelve""" if state.parents != repo.dirstate.parents(): raise error.Abort( _(b'working directory parents do not match unshelve state') ) def _loadshelvedstate(ui, repo, opts) -> shelvedstate: try: state = shelvedstate.load(repo) if opts.get(b'keep') is None: opts[b'keep'] = state.keep return state except FileNotFoundError: cmdutil.wrongtooltocontinue(repo, _(b'unshelve')) except error.CorruptedState as err: ui.debug(pycompat.bytestr(err) + b'\n') if opts.get(b'continue'): msg = _(b'corrupted shelved state file') hint = _( b'please run hg unshelve --abort to abort unshelve ' b'operation' ) raise error.Abort(msg, hint=hint) elif opts.get(b'abort'): shelvedstate.clear(repo) raise error.Abort( _( b'could not read shelved state file, your ' b'working copy may be in an unexpected state\n' b'please update to some commit\n' ) ) else: raise error.ProgrammingError( "a corrupted shelvedstate exists without --abort or --continue" ) def unshelveabort(ui, repo, state: shelvedstate) -> None: """subcommand that abort an in-progress unshelve""" with repo.lock(): try: checkparents(repo, state) merge.clean_update(state.pendingctx) if state.activebookmark and state.activebookmark in repo._bookmarks: bookmarks.activate(repo, state.activebookmark) mergefiles(ui, repo, state.wctx, state.pendingctx) if not _use_internal_phase(repo): repair.strip( ui, repo, state.nodestoremove, backup=False, topic=b'shelve' ) finally: shelvedstate.clear(repo) ui.warn(_(b"unshelve of '%s' aborted\n") % state.name) def hgabortunshelve(ui, repo) -> None: """logic to abort unshelve using 'hg abort""" with repo.wlock(): state = _loadshelvedstate(ui, repo, {b'abort': True}) return unshelveabort(ui, repo, state) def mergefiles(ui, repo, wctx, shelvectx) -> None: """updates to wctx and merges the changes from shelvectx into the dirstate.""" with ui.configoverride({(b'ui', b'quiet'): True}): hg.update(repo, wctx.node()) cmdutil.revert(ui, repo, shelvectx) def restorebranch(ui, repo, branchtorestore: bytes) -> None: if branchtorestore and branchtorestore != repo.dirstate.branch(): repo.dirstate.setbranch(branchtorestore, repo.currenttransaction()) ui.status( _(b'marked working directory as branch %s\n') % branchtorestore ) def unshelvecleanup(ui, repo, name: bytes, opts) -> None: """remove related files after an unshelve""" if not opts.get(b'keep'): backupvfs = vfsmod.vfs(repo.vfs.join(backupdir)) ShelfDir(repo).get(name).movetobackup(backupvfs) cleanupoldbackups(repo) def unshelvecontinue(ui, repo, state: shelvedstate, opts) -> None: """subcommand to continue an in-progress unshelve""" # We're finishing off a merge. First parent is our original # parent, second is the temporary "fake" commit we're unshelving. interactive = state.interactive basename = state.name with repo.lock(): checkparents(repo, state) ms = mergestatemod.mergestate.read(repo) if ms.unresolvedcount(): raise error.Abort( _(b"unresolved conflicts, can't continue"), hint=_(b"see 'hg resolve', then 'hg unshelve --continue'"), ) shelvectx = repo[state.parents[1]] pendingctx = state.pendingctx with repo.dirstate.changing_parents(repo): repo.setparents(state.pendingctx.node(), repo.nullid) repo.dirstate.write(repo.currenttransaction()) targetphase = _target_phase(repo) overrides = {(b'phases', b'new-commit'): targetphase} with repo.ui.configoverride(overrides, b'unshelve'): with repo.dirstate.changing_parents(repo): repo.setparents(state.parents[0], repo.nullid) newnode, ispartialunshelve = _createunshelvectx( ui, repo, shelvectx, basename, interactive, opts ) if newnode is None: shelvectx = state.pendingctx msg = _( b'note: unshelved changes already existed ' b'in the working copy\n' ) ui.status(msg) else: # only strip the shelvectx if we produced one state.nodestoremove.append(newnode) shelvectx = repo[newnode] merge.update(pendingctx) mergefiles(ui, repo, state.wctx, shelvectx) restorebranch(ui, repo, state.branchtorestore) if not _use_internal_phase(repo): repair.strip( ui, repo, state.nodestoremove, backup=False, topic=b'shelve' ) shelvedstate.clear(repo) if not ispartialunshelve: unshelvecleanup(ui, repo, state.name, opts) _restoreactivebookmark(repo, state.activebookmark) ui.status(_(b"unshelve of '%s' complete\n") % state.name) def hgcontinueunshelve(ui, repo) -> None: """logic to resume unshelve using 'hg continue'""" with repo.wlock(): state = _loadshelvedstate(ui, repo, {b'continue': True}) return unshelvecontinue(ui, repo, state, {b'keep': state.keep}) def _commitworkingcopychanges(ui, repo, opts, tmpwctx): """Temporarily commit working copy changes before moving unshelve commit""" # Store pending changes in a commit and remember added in case a shelve # contains unknown files that are part of the pending change s = repo.status() addedbefore = frozenset(s.added) if not (s.modified or s.added or s.removed): return tmpwctx, addedbefore ui.status( _( b"temporarily committing pending changes " b"(restore with 'hg unshelve --abort')\n" ) ) extra = {b'internal': b'shelve'} commitfunc = getcommitfunc(extra=extra, interactive=False, editor=False) tempopts = {} tempopts[b'message'] = b"pending changes temporary commit" tempopts[b'date'] = opts.get(b'date') with ui.configoverride({(b'ui', b'quiet'): True}): node = cmdutil.commit(ui, repo, commitfunc, [], tempopts) tmpwctx = repo[node] return tmpwctx, addedbefore def _unshelverestorecommit(ui, repo, tr, basename: bytes): """Recreate commit in the repository during the unshelve""" repo = repo.unfiltered() node = None shelf = ShelfDir(repo).get(basename) if shelf.hasinfo(): node = shelf.readinfo()[b'node'] if node is None or node not in repo: with ui.configoverride({(b'ui', b'quiet'): True}): shelvectx = shelf.applybundle(repo, tr) # We might not strip the unbundled changeset, so we should keep track of # the unshelve node in case we need to reuse it (eg: unshelve --keep) if node is None: info = {b'node': hex(shelvectx.node())} shelf.writeinfo(info) else: shelvectx = repo[node] return repo, shelvectx def _createunshelvectx( ui, repo, shelvectx, basename: bytes, interactive: bool, opts ) -> Tuple[bytes, bool]: """Handles the creation of unshelve commit and updates the shelve if it was partially unshelved. If interactive is: * False: Commits all the changes in the working directory. * True: Prompts the user to select changes to unshelve and commit them. Update the shelve with remaining changes. Returns the node of the new commit formed and a bool indicating whether the shelve was partially unshelved.Creates a commit ctx to unshelve interactively or non-interactively. The user might want to unshelve certain changes only from the stored shelve in interactive. So, we would create two commits. One with requested changes to unshelve at that time and the latter is shelved for future. Here, we return both the newnode which is created interactively and a bool to know whether the shelve is partly done or completely done. """ opts[b'message'] = shelvectx.description() opts[b'interactive-unshelve'] = True pats = [] if not interactive: newnode = repo.commit( text=shelvectx.description(), extra=shelvectx.extra(), user=shelvectx.user(), date=shelvectx.date(), ) return newnode, False commitfunc = getcommitfunc(shelvectx.extra(), interactive=True, editor=True) newnode = cmdutil.dorecord( ui, repo, commitfunc, None, False, cmdutil.recordfilter, *pats, **pycompat.strkwargs(opts), ) snode = repo.commit( text=shelvectx.description(), extra=shelvectx.extra(), user=shelvectx.user(), ) if snode: m = _optimized_match(repo, snode) _shelvecreatedcommit(repo, snode, basename, m) return newnode, bool(snode) def _rebaserestoredcommit( ui, repo, opts, tr, oldtiprev, basename: bytes, pctx, tmpwctx, shelvectx, branchtorestore, activebookmark, ): """Rebase restored commit from its original location to a destination""" # If the shelve is not immediately on top of the commit # we'll be merging with, rebase it to be on top. interactive = opts.get(b'interactive') if tmpwctx.node() == shelvectx.p1().node() and not interactive: # We won't skip on interactive mode because, the user might want to # unshelve certain changes only. return shelvectx, False overrides = { (b'ui', b'forcemerge'): opts.get(b'tool', b''), (b'phases', b'new-commit'): phases.secret, } with repo.ui.configoverride(overrides, b'unshelve'): ui.status(_(b'rebasing shelved changes\n')) stats = merge.graft( repo, shelvectx, labels=[ b'working-copy', b'shelved change', b'parent of shelved change', ], keepconflictparent=True, ) if stats.unresolvedcount: tr.close() nodestoremove = [ repo.changelog.node(rev) for rev in range(oldtiprev, len(repo)) ] shelvedstate.save( repo, basename, pctx, tmpwctx, nodestoremove, branchtorestore, opts.get(b'keep'), activebookmark, interactive, ) raise error.ConflictResolutionRequired(b'unshelve') with repo.dirstate.changing_parents(repo): repo.setparents(tmpwctx.node(), repo.nullid) newnode, ispartialunshelve = _createunshelvectx( ui, repo, shelvectx, basename, interactive, opts ) if newnode is None: shelvectx = tmpwctx msg = _( b'note: unshelved changes already existed ' b'in the working copy\n' ) ui.status(msg) else: shelvectx = repo[newnode] merge.update(tmpwctx) return shelvectx, ispartialunshelve def _forgetunknownfiles(repo, shelvectx, addedbefore) -> None: # Forget any files that were unknown before the shelve, unknown before # unshelve started, but are now added. shelveunknown = shelvectx.extra().get(b'shelve_unknown') if not shelveunknown: return shelveunknown = frozenset(shelveunknown.split(b'\0')) addedafter = frozenset(repo.status().added) toforget = (addedafter & shelveunknown) - addedbefore repo[None].forget(toforget) def _finishunshelve(repo, oldtiprev, tr, activebookmark) -> None: _restoreactivebookmark(repo, activebookmark) # We used to manually strip the commit to update inmemory structure and # prevent some issue around hooks. This no longer seems to be the case, so # we simply abort the transaction. _aborttransaction(repo, tr) def _checkunshelveuntrackedproblems(ui, repo, shelvectx) -> None: """Check potential problems which may result from working copy having untracked changes.""" wcdeleted = set(repo.status().deleted) shelvetouched = set(shelvectx.files()) intersection = wcdeleted.intersection(shelvetouched) if intersection: m = _(b"shelved change touches missing files") hint = _(b"run hg status to see which files are missing") raise error.Abort(m, hint=hint) def unshelvecmd(ui, repo, *shelved, **opts) -> None: opts = pycompat.byteskwargs(opts) abortf = opts.get(b'abort') continuef = opts.get(b'continue') interactive = opts.get(b'interactive') if not abortf and not continuef: cmdutil.checkunfinished(repo) shelved = list(shelved) if opts.get(b"name"): shelved.append(opts[b"name"]) if interactive and opts.get(b'keep'): raise error.InputError( _(b'--keep on --interactive is not yet supported') ) if abortf or continuef: if abortf and continuef: raise error.InputError(_(b'cannot use both abort and continue')) if shelved: raise error.InputError( _( b'cannot combine abort/continue with ' b'naming a shelved change' ) ) if abortf and opts.get(b'tool', False): ui.warn(_(b'tool option will be ignored\n')) state = _loadshelvedstate(ui, repo, opts) if abortf: return unshelveabort(ui, repo, state) elif continuef and interactive: raise error.InputError( _(b'cannot use both continue and interactive') ) elif continuef: return unshelvecontinue(ui, repo, state, opts) else: # Unreachable code, but help type checkers not think that # 'basename' may be used before initialization when checking # ShelfDir below. raise error.ProgrammingError("neither abort nor continue specified") elif len(shelved) > 1: raise error.InputError(_(b'can only unshelve one change at a time')) elif not shelved: shelved = ShelfDir(repo).listshelves() if not shelved: raise error.StateError(_(b'no shelved changes to apply!')) basename = shelved[0][1] ui.status(_(b"unshelving change '%s'\n") % basename) else: basename = shelved[0] if not ShelfDir(repo).get(basename).exists(): raise error.InputError(_(b"shelved change '%s' not found") % basename) return _dounshelve(ui, repo, basename, opts) def _dounshelve(ui, repo, basename: bytes, opts) -> None: repo = repo.unfiltered() lock = tr = None try: lock = repo.lock() tr = repo.transaction(b'unshelve', report=lambda x: None) oldtiprev = len(repo) pctx = repo[b'.'] # The goal is to have a commit structure like so: # ...-> pctx -> tmpwctx -> shelvectx # where tmpwctx is an optional commit with the user's pending changes # and shelvectx is the unshelved changes. Then we merge it all down # to the original pctx. activebookmark = _backupactivebookmark(repo) tmpwctx, addedbefore = _commitworkingcopychanges(ui, repo, opts, pctx) repo, shelvectx = _unshelverestorecommit(ui, repo, tr, basename) _checkunshelveuntrackedproblems(ui, repo, shelvectx) branchtorestore = b'' if shelvectx.branch() != shelvectx.p1().branch(): branchtorestore = shelvectx.branch() shelvectx, ispartialunshelve = _rebaserestoredcommit( ui, repo, opts, tr, oldtiprev, basename, pctx, tmpwctx, shelvectx, branchtorestore, activebookmark, ) overrides = {(b'ui', b'forcemerge'): opts.get(b'tool', b'')} with ui.configoverride(overrides, b'unshelve'): mergefiles(ui, repo, pctx, shelvectx) restorebranch(ui, repo, branchtorestore) shelvedstate.clear(repo) _finishunshelve(repo, oldtiprev, tr, activebookmark) with repo.dirstate.changing_files(repo): _forgetunknownfiles(repo, shelvectx, addedbefore) if not ispartialunshelve: unshelvecleanup(ui, repo, basename, opts) finally: if tr: tr.release() lockmod.release(lock)