Mercurial > hg
view hgext/uncommit.py @ 35467:d6cfa722b044
templater: look up mapping table through template engine
These functions are stub for symbol/resource separation. This series is
intended to address the following problems:
a) internal data may be exposed to user (issue5699)
b) defaults['repo'] (a repository name) will conflict with mapping['repo']
(a repo object) in hgweb
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Thu, 21 Dec 2017 21:03:25 +0900 |
parents | f01101100043 |
children | f9a82b9b2c36 |
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# uncommit - undo the actions of a commit # # Copyright 2011 Peter Arrenbrecht <peter.arrenbrecht@gmail.com> # Logilab SA <contact@logilab.fr> # Pierre-Yves David <pierre-yves.david@ens-lyon.org> # Patrick Mezard <patrick@mezard.eu> # Copyright 2016 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. """uncommit part or all of a local changeset (EXPERIMENTAL) This command undoes the effect of a local commit, returning the affected files to their uncommitted state. This means that files modified, added or removed in the changeset will be left unchanged, and so will remain modified, added and removed in the working directory. """ from __future__ import absolute_import from mercurial.i18n import _ from mercurial import ( cmdutil, commands, context, copies, error, node, obsutil, pycompat, registrar, rewriteutil, scmutil, ) cmdtable = {} command = registrar.command(cmdtable) configtable = {} configitem = registrar.configitem(configtable) configitem('experimental', 'uncommitondirtywdir', default=False, ) # 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 _commitfiltered(repo, ctx, match, allowempty): """Recommit ctx with changed files not in match. Return the new node identifier, or None if nothing changed. """ base = ctx.p1() # ctx initialfiles = set(ctx.files()) exclude = set(f for f in initialfiles if match(f)) # No files matched commit, so nothing excluded if not exclude: return None files = (initialfiles - exclude) # return the p1 so that we don't create an obsmarker later if not files and not allowempty: return ctx.parents()[0].node() # Filter copies copied = copies.pathcopies(base, ctx) copied = dict((dst, src) for dst, src in copied.iteritems() if dst in files) def filectxfn(repo, memctx, path, contentctx=ctx, redirect=()): if path not in contentctx: return None fctx = contentctx[path] mctx = context.memfilectx(repo, memctx, fctx.path(), fctx.data(), fctx.islink(), fctx.isexec(), copied=copied.get(path)) return mctx new = context.memctx(repo, parents=[base.node(), node.nullid], text=ctx.description(), files=files, filectxfn=filectxfn, user=ctx.user(), date=ctx.date(), extra=ctx.extra()) # phase handling commitphase = ctx.phase() overrides = {('phases', 'new-commit'): commitphase} with repo.ui.configoverride(overrides, 'uncommit'): newid = repo.commitctx(new) return newid def _fixdirstate(repo, oldctx, newctx, status): """ fix the dirstate after switching the working directory from oldctx to newctx which can be result of either unamend or uncommit. """ ds = repo.dirstate copies = dict(ds.copies()) s = status for f in s.modified: if ds[f] == 'r': # modified + removed -> removed continue ds.normallookup(f) for f in s.added: if ds[f] == 'r': # added + removed -> unknown ds.drop(f) elif ds[f] != 'a': ds.add(f) for f in s.removed: if ds[f] == 'a': # removed + added -> normal ds.normallookup(f) elif ds[f] != 'r': ds.remove(f) # Merge old parent and old working dir copies oldcopies = {} for f in (s.modified + s.added): src = oldctx[f].renamed() if src: oldcopies[f] = src[0] oldcopies.update(copies) copies = dict((dst, oldcopies.get(src, src)) for dst, src in oldcopies.iteritems()) # Adjust the dirstate copies for dst, src in copies.iteritems(): if (src not in newctx or dst in newctx or ds[dst] != 'a'): src = None ds.copy(src, dst) @command('uncommit', [('', 'keep', False, _('allow an empty commit after uncommiting')), ] + commands.walkopts, _('[OPTION]... [FILE]...')) def uncommit(ui, repo, *pats, **opts): """uncommit part or all of a local changeset This command undoes the effect of a local commit, returning the affected files to their uncommitted state. This means that files modified or deleted in the changeset will be left unchanged, and so will remain modified in the working directory. """ opts = pycompat.byteskwargs(opts) with repo.wlock(), repo.lock(): if not pats and not repo.ui.configbool('experimental', 'uncommitondirtywdir'): cmdutil.bailifchanged(repo) old = repo['.'] rewriteutil.precheck(repo, [old.rev()], 'uncommit') if len(old.parents()) > 1: raise error.Abort(_("cannot uncommit merge changeset")) with repo.transaction('uncommit'): match = scmutil.match(old, pats, opts) newid = _commitfiltered(repo, old, match, opts.get('keep')) if newid is None: ui.status(_("nothing to uncommit\n")) return 1 mapping = {} if newid != old.p1().node(): # Move local changes on filtered changeset mapping[old.node()] = (newid,) else: # Fully removed the old commit mapping[old.node()] = () scmutil.cleanupnodes(repo, mapping, 'uncommit') with repo.dirstate.parentchange(): repo.dirstate.setparents(newid, node.nullid) s = repo.status(old.p1(), old, match=match) _fixdirstate(repo, old, repo[newid], s) def predecessormarkers(ctx): """yields the obsolete markers marking the given changeset as a successor""" for data in ctx.repo().obsstore.predecessors.get(ctx.node(), ()): yield obsutil.marker(ctx.repo(), data) @command('^unamend', []) def unamend(ui, repo, **opts): """ undo the most recent amend operation on a current changeset This command will roll back to the previous version of a changeset, leaving working directory in state in which it was before running `hg amend` (e.g. files modified as part of an amend will be marked as modified `hg status`) """ unfi = repo.unfiltered() with repo.wlock(), repo.lock(), repo.transaction('unamend'): # identify the commit from which to unamend curctx = repo['.'] rewriteutil.precheck(repo, [curctx.rev()], 'unamend') # identify the commit to which to unamend markers = list(predecessormarkers(curctx)) if len(markers) != 1: e = _("changeset must have one predecessor, found %i predecessors") raise error.Abort(e % len(markers)) prednode = markers[0].prednode() predctx = unfi[prednode] # add an extra so that we get a new hash # note: allowing unamend to undo an unamend is an intentional feature extras = predctx.extra() extras['unamend_source'] = curctx.hex() def filectxfn(repo, ctx_, path): try: return predctx.filectx(path) except KeyError: return None # Make a new commit same as predctx newctx = context.memctx(repo, parents=(predctx.p1(), predctx.p2()), text=predctx.description(), files=predctx.files(), filectxfn=filectxfn, user=predctx.user(), date=predctx.date(), extra=extras) # phase handling commitphase = curctx.phase() overrides = {('phases', 'new-commit'): commitphase} with repo.ui.configoverride(overrides, 'uncommit'): newprednode = repo.commitctx(newctx) newpredctx = repo[newprednode] dirstate = repo.dirstate with dirstate.parentchange(): dirstate.setparents(newprednode, node.nullid) s = repo.status(predctx, curctx) _fixdirstate(repo, curctx, newpredctx, s) mapping = {curctx.node(): (newprednode,)} scmutil.cleanupnodes(repo, mapping, 'unamend')