##// END OF EJS Templates
phase: add an archived phase...
phase: add an archived phase This phase allows for hidden changesets in the "user space". It differs from the "internal" phase which is intended for internal by-product only. There have been discussions at the 4.8 sprint to use such phase to speedup cleanup after history rewriting operation. Shipping it in the same release as the 'internal-phase' groups the associated `requires` entry. The important bit is to have support for this phase in the earliest version of mercurial possible. Adding the UI to manipulate this new phase later seems fine. The current plan for archived usage and user interface are as follow. On a repository with internal-phase on and evolution off: * history rewriting command set rewritten changeset in the archived phase. (This mean updating the cleanupnodes method). * keep `hg unbundle .hg/strip-backup/X.hg` as a way to restore changeset for now (backup bundle need to contains phase data) * [maybe] add a `hg strip --soft` advance flag (a light way to expose the feature without getting in the way of a better UI) Mercurial 4.8 freeze is too close to get the above in by then. We don't introduce a new repository `requirement` as we reuse the one introduced with the 'archived' phase during the 4.8 cycle.

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strip.py
240 lines | 9.1 KiB | text/x-python | PythonLexer
"""strip changesets and their descendants from history
This extension allows you to strip changesets and all their descendants from the
repository. See the command help for details.
"""
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
bookmarks as bookmarksmod,
cmdutil,
error,
hg,
lock as lockmod,
merge,
node as nodemod,
pycompat,
registrar,
repair,
scmutil,
util,
)
nullid = nodemod.nullid
release = lockmod.release
cmdtable = {}
command = registrar.command(cmdtable)
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = 'ships-with-hg-core'
def checksubstate(repo, baserev=None):
'''return list of subrepos at a different revision than substate.
Abort if any subrepos have uncommitted changes.'''
inclsubs = []
wctx = repo[None]
if baserev:
bctx = repo[baserev]
else:
bctx = wctx.parents()[0]
for s in sorted(wctx.substate):
wctx.sub(s).bailifchanged(True)
if s not in bctx.substate or bctx.sub(s).dirty():
inclsubs.append(s)
return inclsubs
def checklocalchanges(repo, force=False, excsuffix=''):
cmdutil.checkunfinished(repo)
s = repo.status()
if not force:
if s.modified or s.added or s.removed or s.deleted:
_("local changes found") # i18n tool detection
raise error.Abort(_("local changes found" + excsuffix))
if checksubstate(repo):
_("local changed subrepos found") # i18n tool detection
raise error.Abort(_("local changed subrepos found" + excsuffix))
return s
def _findupdatetarget(repo, nodes):
unode, p2 = repo.changelog.parents(nodes[0])
currentbranch = repo[None].branch()
if (util.safehasattr(repo, 'mq') and p2 != nullid
and p2 in [x.node for x in repo.mq.applied]):
unode = p2
elif currentbranch != repo[unode].branch():
pwdir = 'parents(wdir())'
revset = 'max(((parents(%ln::%r) + %r) - %ln::%r) and branch(%s))'
branchtarget = repo.revs(revset, nodes, pwdir, pwdir, nodes, pwdir,
currentbranch)
if branchtarget:
cl = repo.changelog
unode = cl.node(branchtarget.first())
return unode
def strip(ui, repo, revs, update=True, backup=True, force=None, bookmarks=None):
with repo.wlock(), repo.lock():
if update:
checklocalchanges(repo, force=force)
urev = _findupdatetarget(repo, revs)
hg.clean(repo, urev)
repo.dirstate.write(repo.currenttransaction())
repair.strip(ui, repo, revs, backup)
repomarks = repo._bookmarks
if bookmarks:
with repo.transaction('strip') as tr:
if repo._activebookmark in bookmarks:
bookmarksmod.deactivate(repo)
repomarks.applychanges(repo, tr, [(b, None) for b in bookmarks])
for bookmark in sorted(bookmarks):
ui.write(_("bookmark '%s' deleted\n") % bookmark)
@command("strip",
[
('r', 'rev', [], _('strip specified revision (optional, '
'can specify revisions without this '
'option)'), _('REV')),
('f', 'force', None, _('force removal of changesets, discard '
'uncommitted changes (no backup)')),
('', 'no-backup', None, _('do not save backup bundle')),
('', 'nobackup', None, _('do not save backup bundle '
'(DEPRECATED)')),
('n', '', None, _('ignored (DEPRECATED)')),
('k', 'keep', None, _("do not modify working directory during "
"strip")),
('B', 'bookmark', [], _("remove revs only reachable from given"
" bookmark"), _('BOOKMARK'))],
_('hg strip [-k] [-f] [-B bookmark] [-r] REV...'),
helpcategory=command.CATEGORY_MAINTENANCE)
def stripcmd(ui, repo, *revs, **opts):
"""strip changesets and all their descendants from the repository
The strip command removes the specified changesets and all their
descendants. If the working directory has uncommitted changes, the
operation is aborted unless the --force flag is supplied, in which
case changes will be discarded.
If a parent of the working directory is stripped, then the working
directory will automatically be updated to the most recent
available ancestor of the stripped parent after the operation
completes.
Any stripped changesets are stored in ``.hg/strip-backup`` as a
bundle (see :hg:`help bundle` and :hg:`help unbundle`). They can
be restored by running :hg:`unbundle .hg/strip-backup/BUNDLE`,
where BUNDLE is the bundle file created by the strip. Note that
the local revision numbers will in general be different after the
restore.
Use the --no-backup option to discard the backup bundle once the
operation completes.
Strip is not a history-rewriting operation and can be used on
changesets in the public phase. But if the stripped changesets have
been pushed to a remote repository you will likely pull them again.
Return 0 on success.
"""
opts = pycompat.byteskwargs(opts)
backup = True
if opts.get('no_backup') or opts.get('nobackup'):
backup = False
cl = repo.changelog
revs = list(revs) + opts.get('rev')
revs = set(scmutil.revrange(repo, revs))
with repo.wlock():
bookmarks = set(opts.get('bookmark'))
if bookmarks:
repomarks = repo._bookmarks
if not bookmarks.issubset(repomarks):
raise error.Abort(_("bookmark '%s' not found") %
','.join(sorted(bookmarks - set(repomarks.keys()))))
# If the requested bookmark is not the only one pointing to a
# a revision we have to only delete the bookmark and not strip
# anything. revsets cannot detect that case.
nodetobookmarks = {}
for mark, node in repomarks.iteritems():
nodetobookmarks.setdefault(node, []).append(mark)
for marks in nodetobookmarks.values():
if bookmarks.issuperset(marks):
rsrevs = scmutil.bookmarkrevs(repo, marks[0])
revs.update(set(rsrevs))
if not revs:
with repo.lock(), repo.transaction('bookmark') as tr:
bmchanges = [(b, None) for b in bookmarks]
repomarks.applychanges(repo, tr, bmchanges)
for bookmark in sorted(bookmarks):
ui.write(_("bookmark '%s' deleted\n") % bookmark)
if not revs:
raise error.Abort(_('empty revision set'))
descendants = set(cl.descendants(revs))
strippedrevs = revs.union(descendants)
roots = revs.difference(descendants)
# if one of the wdir parent is stripped we'll need
# to update away to an earlier revision
update = any(p != nullid and cl.rev(p) in strippedrevs
for p in repo.dirstate.parents())
rootnodes = set(cl.node(r) for r in roots)
q = getattr(repo, 'mq', None)
if q is not None and q.applied:
# refresh queue state if we're about to strip
# applied patches
if cl.rev(repo.lookup('qtip')) in strippedrevs:
q.applieddirty = True
start = 0
end = len(q.applied)
for i, statusentry in enumerate(q.applied):
if statusentry.node in rootnodes:
# if one of the stripped roots is an applied
# patch, only part of the queue is stripped
start = i
break
del q.applied[start:end]
q.savedirty()
revs = sorted(rootnodes)
if update and opts.get('keep'):
urev = _findupdatetarget(repo, revs)
uctx = repo[urev]
# only reset the dirstate for files that would actually change
# between the working context and uctx
descendantrevs = repo.revs(b"%d::.", uctx.rev())
changedfiles = []
for rev in descendantrevs:
# blindly reset the files, regardless of what actually changed
changedfiles.extend(repo[rev].files())
# reset files that only changed in the dirstate too
dirstate = repo.dirstate
dirchanges = [f for f in dirstate if dirstate[f] != 'n']
changedfiles.extend(dirchanges)
repo.dirstate.rebuild(urev, uctx.manifest(), changedfiles)
repo.dirstate.write(repo.currenttransaction())
# clear resolve state
merge.mergestate.clean(repo, repo['.'].node())
update = False
strip(ui, repo, revs, backup=backup, update=update,
force=opts.get('force'), bookmarks=bookmarks)
return 0