Mercurial > hg
view hgext/histedit.py @ 26638:7afaf2566e25
revset: add optional offset argument to limit() predicate
It's common for GUI or web frontend to fetch chunk of revisions per batch
size. Previously it was possible only if revisions were sorted by revision
number.
$ hg log -r 'limit({revspec} & :{last_known}, 101)'
So this patch introduces a general way to retrieve chunk of revisions after
skipping offset revisions.
$ hg log -r 'limit({revspec}, 100, {last_count})'
This is a dumb implementation. We can optimize it for baseset and spanset
later.
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Tue, 24 Mar 2015 00:28:28 +0900 |
parents | 56b2bcea2529 |
children | 78aa4392c261 |
line wrap: on
line source
# histedit.py - interactive history editing for mercurial # # Copyright 2009 Augie Fackler <raf@durin42.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """interactive history editing With this extension installed, Mercurial gains one new command: histedit. Usage is as follows, assuming the following history:: @ 3[tip] 7c2fd3b9020c 2009-04-27 18:04 -0500 durin42 | Add delta | o 2 030b686bedc4 2009-04-27 18:04 -0500 durin42 | Add gamma | o 1 c561b4e977df 2009-04-27 18:04 -0500 durin42 | Add beta | o 0 d8d2fcd0e319 2009-04-27 18:04 -0500 durin42 Add alpha If you were to run ``hg histedit c561b4e977df``, you would see the following file open in your editor:: pick c561b4e977df Add beta pick 030b686bedc4 Add gamma pick 7c2fd3b9020c Add delta # Edit history between c561b4e977df and 7c2fd3b9020c # # Commits are listed from least to most recent # # Commands: # p, pick = use commit # e, edit = use commit, but stop for amending # f, fold = use commit, but combine it with the one above # r, roll = like fold, but discard this commit's description # d, drop = remove commit from history # m, mess = edit commit message without changing commit content # In this file, lines beginning with ``#`` are ignored. You must specify a rule for each revision in your history. For example, if you had meant to add gamma before beta, and then wanted to add delta in the same revision as beta, you would reorganize the file to look like this:: pick 030b686bedc4 Add gamma pick c561b4e977df Add beta fold 7c2fd3b9020c Add delta # Edit history between c561b4e977df and 7c2fd3b9020c # # Commits are listed from least to most recent # # Commands: # p, pick = use commit # e, edit = use commit, but stop for amending # f, fold = use commit, but combine it with the one above # r, roll = like fold, but discard this commit's description # d, drop = remove commit from history # m, mess = edit commit message without changing commit content # At which point you close the editor and ``histedit`` starts working. When you specify a ``fold`` operation, ``histedit`` will open an editor when it folds those revisions together, offering you a chance to clean up the commit message:: Add beta *** Add delta Edit the commit message to your liking, then close the editor. For this example, let's assume that the commit message was changed to ``Add beta and delta.`` After histedit has run and had a chance to remove any old or temporary revisions it needed, the history looks like this:: @ 2[tip] 989b4d060121 2009-04-27 18:04 -0500 durin42 | Add beta and delta. | o 1 081603921c3f 2009-04-27 18:04 -0500 durin42 | Add gamma | o 0 d8d2fcd0e319 2009-04-27 18:04 -0500 durin42 Add alpha Note that ``histedit`` does *not* remove any revisions (even its own temporary ones) until after it has completed all the editing operations, so it will probably perform several strip operations when it's done. For the above example, it had to run strip twice. Strip can be slow depending on a variety of factors, so you might need to be a little patient. You can choose to keep the original revisions by passing the ``--keep`` flag. The ``edit`` operation will drop you back to a command prompt, allowing you to edit files freely, or even use ``hg record`` to commit some changes as a separate commit. When you're done, any remaining uncommitted changes will be committed as well. When done, run ``hg histedit --continue`` to finish this step. You'll be prompted for a new commit message, but the default commit message will be the original message for the ``edit`` ed revision. The ``message`` operation will give you a chance to revise a commit message without changing the contents. It's a shortcut for doing ``edit`` immediately followed by `hg histedit --continue``. If ``histedit`` encounters a conflict when moving a revision (while handling ``pick`` or ``fold``), it'll stop in a similar manner to ``edit`` with the difference that it won't prompt you for a commit message when done. If you decide at this point that you don't like how much work it will be to rearrange history, or that you made a mistake, you can use ``hg histedit --abort`` to abandon the new changes you have made and return to the state before you attempted to edit your history. If we clone the histedit-ed example repository above and add four more changes, such that we have the following history:: @ 6[tip] 038383181893 2009-04-27 18:04 -0500 stefan | Add theta | o 5 140988835471 2009-04-27 18:04 -0500 stefan | Add eta | o 4 122930637314 2009-04-27 18:04 -0500 stefan | Add zeta | o 3 836302820282 2009-04-27 18:04 -0500 stefan | Add epsilon | o 2 989b4d060121 2009-04-27 18:04 -0500 durin42 | Add beta and delta. | o 1 081603921c3f 2009-04-27 18:04 -0500 durin42 | Add gamma | o 0 d8d2fcd0e319 2009-04-27 18:04 -0500 durin42 Add alpha If you run ``hg histedit --outgoing`` on the clone then it is the same as running ``hg histedit 836302820282``. If you need plan to push to a repository that Mercurial does not detect to be related to the source repo, you can add a ``--force`` option. Histedit rule lines are truncated to 80 characters by default. You can customize this behavior by setting a different length in your configuration file:: [histedit] linelen = 120 # truncate rule lines at 120 characters """ try: import cPickle as pickle pickle.dump # import now except ImportError: import pickle import errno import os import sys from mercurial import cmdutil from mercurial import discovery from mercurial import error from mercurial import changegroup from mercurial import copies from mercurial import context from mercurial import exchange from mercurial import extensions from mercurial import hg from mercurial import node from mercurial import repair from mercurial import scmutil from mercurial import util from mercurial import obsolete from mercurial import merge as mergemod from mercurial.lock import release from mercurial.i18n import _ cmdtable = {} command = cmdutil.command(cmdtable) # Note for extension authors: ONLY specify testedwith = 'internal' 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 = 'internal' # i18n: command names and abbreviations must remain untranslated editcomment = _("""# Edit history between %s and %s # # Commits are listed from least to most recent # # Commands: # p, pick = use commit # e, edit = use commit, but stop for amending # f, fold = use commit, but combine it with the one above # r, roll = like fold, but discard this commit's description # d, drop = remove commit from history # m, mess = edit commit message without changing commit content # """) class histeditstate(object): def __init__(self, repo, parentctxnode=None, rules=None, keep=None, topmost=None, replacements=None, lock=None, wlock=None): self.repo = repo self.rules = rules self.keep = keep self.topmost = topmost self.parentctxnode = parentctxnode self.lock = lock self.wlock = wlock self.backupfile = None if replacements is None: self.replacements = [] else: self.replacements = replacements def read(self): """Load histedit state from disk and set fields appropriately.""" try: fp = self.repo.vfs('histedit-state', 'r') except IOError as err: if err.errno != errno.ENOENT: raise raise error.Abort(_('no histedit in progress')) try: data = pickle.load(fp) parentctxnode, rules, keep, topmost, replacements = data backupfile = None except pickle.UnpicklingError: data = self._load() parentctxnode, rules, keep, topmost, replacements, backupfile = data self.parentctxnode = parentctxnode self.rules = rules self.keep = keep self.topmost = topmost self.replacements = replacements self.backupfile = backupfile def write(self): fp = self.repo.vfs('histedit-state', 'w') fp.write('v1\n') fp.write('%s\n' % node.hex(self.parentctxnode)) fp.write('%s\n' % node.hex(self.topmost)) fp.write('%s\n' % self.keep) fp.write('%d\n' % len(self.rules)) for rule in self.rules: fp.write('%s\n' % rule[0]) # action fp.write('%s\n' % rule[1]) # remainder fp.write('%d\n' % len(self.replacements)) for replacement in self.replacements: fp.write('%s%s\n' % (node.hex(replacement[0]), ''.join(node.hex(r) for r in replacement[1]))) backupfile = self.backupfile if not backupfile: backupfile = '' fp.write('%s\n' % backupfile) fp.close() def _load(self): fp = self.repo.vfs('histedit-state', 'r') lines = [l[:-1] for l in fp.readlines()] index = 0 lines[index] # version number index += 1 parentctxnode = node.bin(lines[index]) index += 1 topmost = node.bin(lines[index]) index += 1 keep = lines[index] == 'True' index += 1 # Rules rules = [] rulelen = int(lines[index]) index += 1 for i in xrange(rulelen): ruleaction = lines[index] index += 1 rule = lines[index] index += 1 rules.append((ruleaction, rule)) # Replacements replacements = [] replacementlen = int(lines[index]) index += 1 for i in xrange(replacementlen): replacement = lines[index] original = node.bin(replacement[:40]) succ = [node.bin(replacement[i:i + 40]) for i in range(40, len(replacement), 40)] replacements.append((original, succ)) index += 1 backupfile = lines[index] index += 1 fp.close() return parentctxnode, rules, keep, topmost, replacements, backupfile def clear(self): if self.inprogress(): self.repo.vfs.unlink('histedit-state') def inprogress(self): return self.repo.vfs.exists('histedit-state') class histeditaction(object): def __init__(self, state, node): self.state = state self.repo = state.repo self.node = node @classmethod def fromrule(cls, state, rule): """Parses the given rule, returning an instance of the histeditaction. """ repo = state.repo rulehash = rule.strip().split(' ', 1)[0] try: node = repo[rulehash].node() except error.RepoError: raise error.Abort(_('unknown changeset %s listed') % rulehash[:12]) return cls(state, node) def run(self): """Runs the action. The default behavior is simply apply the action's rulectx onto the current parentctx.""" self.applychange() self.continuedirty() return self.continueclean() def applychange(self): """Applies the changes from this action's rulectx onto the current parentctx, but does not commit them.""" repo = self.repo rulectx = repo[self.node] hg.update(repo, self.state.parentctxnode) stats = applychanges(repo.ui, repo, rulectx, {}) if stats and stats[3] > 0: raise error.InterventionRequired(_('Fix up the change and run ' 'hg histedit --continue')) def continuedirty(self): """Continues the action when changes have been applied to the working copy. The default behavior is to commit the dirty changes.""" repo = self.repo rulectx = repo[self.node] editor = self.commiteditor() commit = commitfuncfor(repo, rulectx) commit(text=rulectx.description(), user=rulectx.user(), date=rulectx.date(), extra=rulectx.extra(), editor=editor) def commiteditor(self): """The editor to be used to edit the commit message.""" return False def continueclean(self): """Continues the action when the working copy is clean. The default behavior is to accept the current commit as the new version of the rulectx.""" ctx = self.repo['.'] if ctx.node() == self.state.parentctxnode: self.repo.ui.warn(_('%s: empty changeset\n') % node.short(self.node)) return ctx, [(self.node, tuple())] if ctx.node() == self.node: # Nothing changed return ctx, [] return ctx, [(self.node, (ctx.node(),))] def commitfuncfor(repo, src): """Build a commit function for the replacement of <src> This function ensure we apply the same treatment to all changesets. - Add a 'histedit_source' entry in extra. Note that fold has its own separated logic because its handling is a bit different and not easily factored out of the fold method. """ phasemin = src.phase() def commitfunc(**kwargs): phasebackup = repo.ui.backupconfig('phases', 'new-commit') try: repo.ui.setconfig('phases', 'new-commit', phasemin, 'histedit') extra = kwargs.get('extra', {}).copy() extra['histedit_source'] = src.hex() kwargs['extra'] = extra return repo.commit(**kwargs) finally: repo.ui.restoreconfig(phasebackup) return commitfunc def applychanges(ui, repo, ctx, opts): """Merge changeset from ctx (only) in the current working directory""" wcpar = repo.dirstate.parents()[0] if ctx.p1().node() == wcpar: # edits are "in place" we do not need to make any merge, # just applies changes on parent for edition cmdutil.revert(ui, repo, ctx, (wcpar, node.nullid), all=True) stats = None else: try: # ui.forcemerge is an internal variable, do not document repo.ui.setconfig('ui', 'forcemerge', opts.get('tool', ''), 'histedit') stats = mergemod.graft(repo, ctx, ctx.p1(), ['local', 'histedit']) finally: repo.ui.setconfig('ui', 'forcemerge', '', 'histedit') return stats def collapse(repo, first, last, commitopts, skipprompt=False): """collapse the set of revisions from first to last as new one. Expected commit options are: - message - date - username Commit message is edited in all cases. This function works in memory.""" ctxs = list(repo.set('%d::%d', first, last)) if not ctxs: return None for c in ctxs: if not c.mutable(): raise error.Abort( _("cannot fold into public change %s") % node.short(c.node())) base = first.parents()[0] # commit a new version of the old changeset, including the update # collect all files which might be affected files = set() for ctx in ctxs: files.update(ctx.files()) # Recompute copies (avoid recording a -> b -> a) copied = copies.pathcopies(base, last) # prune files which were reverted by the updates def samefile(f): if f in last.manifest(): a = last.filectx(f) if f in base.manifest(): b = base.filectx(f) return (a.data() == b.data() and a.flags() == b.flags()) else: return False else: return f not in base.manifest() files = [f for f in files if not samefile(f)] # commit version of these files as defined by head headmf = last.manifest() def filectxfn(repo, ctx, path): if path in headmf: fctx = last[path] flags = fctx.flags() mctx = context.memfilectx(repo, fctx.path(), fctx.data(), islink='l' in flags, isexec='x' in flags, copied=copied.get(path)) return mctx return None if commitopts.get('message'): message = commitopts['message'] else: message = first.description() user = commitopts.get('user') date = commitopts.get('date') extra = commitopts.get('extra') parents = (first.p1().node(), first.p2().node()) editor = None if not skipprompt: editor = cmdutil.getcommiteditor(edit=True, editform='histedit.fold') new = context.memctx(repo, parents=parents, text=message, files=files, filectxfn=filectxfn, user=user, date=date, extra=extra, editor=editor) return repo.commitctx(new) class pick(histeditaction): def run(self): rulectx = self.repo[self.node] if rulectx.parents()[0].node() == self.state.parentctxnode: self.repo.ui.debug('node %s unchanged\n' % node.short(self.node)) return rulectx, [] return super(pick, self).run() class edit(histeditaction): def run(self): repo = self.repo rulectx = repo[self.node] hg.update(repo, self.state.parentctxnode) applychanges(repo.ui, repo, rulectx, {}) raise error.InterventionRequired( _('Make changes as needed, you may commit or record as needed ' 'now.\nWhen you are finished, run hg histedit --continue to ' 'resume.')) def commiteditor(self): return cmdutil.getcommiteditor(edit=True, editform='histedit.edit') class fold(histeditaction): def continuedirty(self): repo = self.repo rulectx = repo[self.node] commit = commitfuncfor(repo, rulectx) commit(text='fold-temp-revision %s' % node.short(self.node), user=rulectx.user(), date=rulectx.date(), extra=rulectx.extra()) def continueclean(self): repo = self.repo ctx = repo['.'] rulectx = repo[self.node] parentctxnode = self.state.parentctxnode if ctx.node() == parentctxnode: repo.ui.warn(_('%s: empty changeset\n') % node.short(self.node)) return ctx, [(self.node, (parentctxnode,))] parentctx = repo[parentctxnode] newcommits = set(c.node() for c in repo.set('(%d::. - %d)', parentctx, parentctx)) if not newcommits: repo.ui.warn(_('%s: cannot fold - working copy is not a ' 'descendant of previous commit %s\n') % (node.short(self.node), node.short(parentctxnode))) return ctx, [(self.node, (ctx.node(),))] middlecommits = newcommits.copy() middlecommits.discard(ctx.node()) return self.finishfold(repo.ui, repo, parentctx, rulectx, ctx.node(), middlecommits) def skipprompt(self): """Returns true if the rule should skip the message editor. For example, 'fold' wants to show an editor, but 'rollup' doesn't want to. """ return False def mergedescs(self): """Returns true if the rule should merge messages of multiple changes. This exists mainly so that 'rollup' rules can be a subclass of 'fold'. """ return True def finishfold(self, ui, repo, ctx, oldctx, newnode, internalchanges): parent = ctx.parents()[0].node() hg.update(repo, parent) ### prepare new commit data commitopts = {} commitopts['user'] = ctx.user() # commit message if not self.mergedescs(): newmessage = ctx.description() else: newmessage = '\n***\n'.join( [ctx.description()] + [repo[r].description() for r in internalchanges] + [oldctx.description()]) + '\n' commitopts['message'] = newmessage # date commitopts['date'] = max(ctx.date(), oldctx.date()) extra = ctx.extra().copy() # histedit_source # note: ctx is likely a temporary commit but that the best we can do # here. This is sufficient to solve issue3681 anyway. extra['histedit_source'] = '%s,%s' % (ctx.hex(), oldctx.hex()) commitopts['extra'] = extra phasebackup = repo.ui.backupconfig('phases', 'new-commit') try: phasemin = max(ctx.phase(), oldctx.phase()) repo.ui.setconfig('phases', 'new-commit', phasemin, 'histedit') n = collapse(repo, ctx, repo[newnode], commitopts, skipprompt=self.skipprompt()) finally: repo.ui.restoreconfig(phasebackup) if n is None: return ctx, [] hg.update(repo, n) replacements = [(oldctx.node(), (newnode,)), (ctx.node(), (n,)), (newnode, (n,)), ] for ich in internalchanges: replacements.append((ich, (n,))) return repo[n], replacements class _multifold(fold): """fold subclass used for when multiple folds happen in a row We only want to fire the editor for the folded message once when (say) four changes are folded down into a single change. This is similar to rollup, but we should preserve both messages so that when the last fold operation runs we can show the user all the commit messages in their editor. """ def skipprompt(self): return True class rollup(fold): def mergedescs(self): return False def skipprompt(self): return True class drop(histeditaction): def run(self): parentctx = self.repo[self.state.parentctxnode] return parentctx, [(self.node, tuple())] class message(histeditaction): def commiteditor(self): return cmdutil.getcommiteditor(edit=True, editform='histedit.mess') def findoutgoing(ui, repo, remote=None, force=False, opts=None): """utility function to find the first outgoing changeset Used by initialization code""" if opts is None: opts = {} dest = ui.expandpath(remote or 'default-push', remote or 'default') dest, revs = hg.parseurl(dest, None)[:2] ui.status(_('comparing with %s\n') % util.hidepassword(dest)) revs, checkout = hg.addbranchrevs(repo, repo, revs, None) other = hg.peer(repo, opts, dest) if revs: revs = [repo.lookup(rev) for rev in revs] outgoing = discovery.findcommonoutgoing(repo, other, revs, force=force) if not outgoing.missing: raise error.Abort(_('no outgoing ancestors')) roots = list(repo.revs("roots(%ln)", outgoing.missing)) if 1 < len(roots): msg = _('there are ambiguous outgoing revisions') hint = _('see "hg help histedit" for more detail') raise error.Abort(msg, hint=hint) return repo.lookup(roots[0]) actiontable = {'p': pick, 'pick': pick, 'e': edit, 'edit': edit, 'f': fold, 'fold': fold, '_multifold': _multifold, 'r': rollup, 'roll': rollup, 'd': drop, 'drop': drop, 'm': message, 'mess': message, } @command('histedit', [('', 'commands', '', _('read history edits from the specified file'), _('FILE')), ('c', 'continue', False, _('continue an edit already in progress')), ('', 'edit-plan', False, _('edit remaining actions list')), ('k', 'keep', False, _("don't strip old nodes after edit is complete")), ('', 'abort', False, _('abort an edit in progress')), ('o', 'outgoing', False, _('changesets not found in destination')), ('f', 'force', False, _('force outgoing even for unrelated repositories')), ('r', 'rev', [], _('first revision to be edited'), _('REV'))], _("ANCESTOR | --outgoing [URL]")) def histedit(ui, repo, *freeargs, **opts): """interactively edit changeset history This command edits changesets between ANCESTOR and the parent of the working directory. With --outgoing, this edits changesets not found in the destination repository. If URL of the destination is omitted, the 'default-push' (or 'default') path will be used. For safety, this command is also aborted if there are ambiguous outgoing revisions which may confuse users: for example, if there are multiple branches containing outgoing revisions. Use "min(outgoing() and ::.)" or similar revset specification instead of --outgoing to specify edit target revision exactly in such ambiguous situation. See :hg:`help revsets` for detail about selecting revisions. Returns 0 on success, 1 if user intervention is required (not only for intentional "edit" command, but also for resolving unexpected conflicts). """ state = histeditstate(repo) try: state.wlock = repo.wlock() state.lock = repo.lock() _histedit(ui, repo, state, *freeargs, **opts) finally: release(state.lock, state.wlock) def _histedit(ui, repo, state, *freeargs, **opts): # TODO only abort if we try and histedit mq patches, not just # blanket if mq patches are applied somewhere mq = getattr(repo, 'mq', None) if mq and mq.applied: raise error.Abort(_('source has mq patches applied')) # basic argument incompatibility processing outg = opts.get('outgoing') cont = opts.get('continue') editplan = opts.get('edit_plan') abort = opts.get('abort') force = opts.get('force') rules = opts.get('commands', '') revs = opts.get('rev', []) goal = 'new' # This invocation goal, in new, continue, abort if force and not outg: raise error.Abort(_('--force only allowed with --outgoing')) if cont: if any((outg, abort, revs, freeargs, rules, editplan)): raise error.Abort(_('no arguments allowed with --continue')) goal = 'continue' elif abort: if any((outg, revs, freeargs, rules, editplan)): raise error.Abort(_('no arguments allowed with --abort')) goal = 'abort' elif editplan: if any((outg, revs, freeargs)): raise error.Abort(_('only --commands argument allowed with ' '--edit-plan')) goal = 'edit-plan' else: if os.path.exists(os.path.join(repo.path, 'histedit-state')): raise error.Abort(_('history edit already in progress, try ' '--continue or --abort')) if outg: if revs: raise error.Abort(_('no revisions allowed with --outgoing')) if len(freeargs) > 1: raise error.Abort( _('only one repo argument allowed with --outgoing')) else: revs.extend(freeargs) if len(revs) == 0: # experimental config: histedit.defaultrev histeditdefault = ui.config('histedit', 'defaultrev') if histeditdefault: revs.append(histeditdefault) if len(revs) != 1: raise error.Abort( _('histedit requires exactly one ancestor revision')) replacements = [] state.keep = opts.get('keep', False) supportsmarkers = obsolete.isenabled(repo, obsolete.createmarkersopt) # rebuild state if goal == 'continue': state.read() state = bootstrapcontinue(ui, state, opts) elif goal == 'edit-plan': state.read() if not rules: comment = editcomment % (node.short(state.parentctxnode), node.short(state.topmost)) rules = ruleeditor(repo, ui, state.rules, comment) else: if rules == '-': f = sys.stdin else: f = open(rules) rules = f.read() f.close() rules = [l for l in (r.strip() for r in rules.splitlines()) if l and not l.startswith('#')] rules = verifyrules(rules, repo, [repo[c] for [_a, c] in state.rules]) state.rules = rules state.write() return elif goal == 'abort': try: state.read() tmpnodes, leafs = newnodestoabort(state) ui.debug('restore wc to old parent %s\n' % node.short(state.topmost)) # Recover our old commits if necessary if not state.topmost in repo and state.backupfile: backupfile = repo.join(state.backupfile) f = hg.openpath(ui, backupfile) gen = exchange.readbundle(ui, f, backupfile) changegroup.addchangegroup(repo, gen, 'histedit', 'bundle:' + backupfile) os.remove(backupfile) # check whether we should update away if repo.unfiltered().revs('parents() and (%n or %ln::)', state.parentctxnode, leafs | tmpnodes): hg.clean(repo, state.topmost) cleanupnode(ui, repo, 'created', tmpnodes) cleanupnode(ui, repo, 'temp', leafs) except Exception: if state.inprogress(): ui.warn(_('warning: encountered an exception during histedit ' '--abort; the repository may not have been completely ' 'cleaned up\n')) raise finally: state.clear() return else: cmdutil.checkunfinished(repo) cmdutil.bailifchanged(repo) topmost, empty = repo.dirstate.parents() if outg: if freeargs: remote = freeargs[0] else: remote = None root = findoutgoing(ui, repo, remote, force, opts) else: rr = list(repo.set('roots(%ld)', scmutil.revrange(repo, revs))) if len(rr) != 1: raise error.Abort(_('The specified revisions must have ' 'exactly one common root')) root = rr[0].node() revs = between(repo, root, topmost, state.keep) if not revs: raise error.Abort(_('%s is not an ancestor of working directory') % node.short(root)) ctxs = [repo[r] for r in revs] if not rules: comment = editcomment % (node.short(root), node.short(topmost)) rules = ruleeditor(repo, ui, [['pick', c] for c in ctxs], comment) else: if rules == '-': f = sys.stdin else: f = open(rules) rules = f.read() f.close() rules = [l for l in (r.strip() for r in rules.splitlines()) if l and not l.startswith('#')] rules = verifyrules(rules, repo, ctxs) parentctxnode = repo[root].parents()[0].node() state.parentctxnode = parentctxnode state.rules = rules state.topmost = topmost state.replacements = replacements # Create a backup so we can always abort completely. backupfile = None if not obsolete.isenabled(repo, obsolete.createmarkersopt): backupfile = repair._bundle(repo, [parentctxnode], [topmost], root, 'histedit') state.backupfile = backupfile # preprocess rules so that we can hide inner folds from the user # and only show one editor rules = state.rules[:] for idx, ((action, ha), (nextact, unused)) in enumerate( zip(rules, rules[1:] + [(None, None)])): if action == 'fold' and nextact == 'fold': state.rules[idx] = '_multifold', ha while state.rules: state.write() action, ha = state.rules.pop(0) ui.debug('histedit: processing %s %s\n' % (action, ha[:12])) actobj = actiontable[action].fromrule(state, ha) parentctx, replacement_ = actobj.run() state.parentctxnode = parentctx.node() state.replacements.extend(replacement_) state.write() hg.update(repo, state.parentctxnode) mapping, tmpnodes, created, ntm = processreplacement(state) if mapping: for prec, succs in mapping.iteritems(): if not succs: ui.debug('histedit: %s is dropped\n' % node.short(prec)) else: ui.debug('histedit: %s is replaced by %s\n' % ( node.short(prec), node.short(succs[0]))) if len(succs) > 1: m = 'histedit: %s' for n in succs[1:]: ui.debug(m % node.short(n)) if not state.keep: if mapping: movebookmarks(ui, repo, mapping, state.topmost, ntm) # TODO update mq state if supportsmarkers: markers = [] # sort by revision number because it sound "right" for prec in sorted(mapping, key=repo.changelog.rev): succs = mapping[prec] markers.append((repo[prec], tuple(repo[s] for s in succs))) if markers: obsolete.createmarkers(repo, markers) else: cleanupnode(ui, repo, 'replaced', mapping) cleanupnode(ui, repo, 'temp', tmpnodes) state.clear() if os.path.exists(repo.sjoin('undo')): os.unlink(repo.sjoin('undo')) def bootstrapcontinue(ui, state, opts): repo = state.repo if state.rules: action, currentnode = state.rules.pop(0) actobj = actiontable[action].fromrule(state, currentnode) s = repo.status() if s.modified or s.added or s.removed or s.deleted: actobj.continuedirty() s = repo.status() if s.modified or s.added or s.removed or s.deleted: raise error.Abort(_("working copy still dirty")) parentctx, replacements = actobj.continueclean() state.parentctxnode = parentctx.node() state.replacements.extend(replacements) return state def between(repo, old, new, keep): """select and validate the set of revision to edit When keep is false, the specified set can't have children.""" ctxs = list(repo.set('%n::%n', old, new)) if ctxs and not keep: if (not obsolete.isenabled(repo, obsolete.allowunstableopt) and repo.revs('(%ld::) - (%ld)', ctxs, ctxs)): raise error.Abort(_('cannot edit history that would orphan nodes')) if repo.revs('(%ld) and merge()', ctxs): raise error.Abort(_('cannot edit history that contains merges')) root = ctxs[0] # list is already sorted by repo.set if not root.mutable(): raise error.Abort(_('cannot edit public changeset: %s') % root, hint=_('see "hg help phases" for details')) return [c.node() for c in ctxs] def makedesc(repo, action, rev): """build a initial action line for a ctx line are in the form: <action> <hash> <rev> <summary> """ ctx = repo[rev] summary = '' if ctx.description(): summary = ctx.description().splitlines()[0] line = '%s %s %d %s' % (action, ctx, ctx.rev(), summary) # trim to 80 columns so it's not stupidly wide in my editor maxlen = repo.ui.configint('histedit', 'linelen', default=80) maxlen = max(maxlen, 22) # avoid truncating hash return util.ellipsis(line, maxlen) def ruleeditor(repo, ui, rules, editcomment=""): """open an editor to edit rules rules are in the format [ [act, ctx], ...] like in state.rules """ rules = '\n'.join([makedesc(repo, act, rev) for [act, rev] in rules]) rules += '\n\n' rules += editcomment rules = ui.edit(rules, ui.username()) # Save edit rules in .hg/histedit-last-edit.txt in case # the user needs to ask for help after something # surprising happens. f = open(repo.join('histedit-last-edit.txt'), 'w') f.write(rules) f.close() return rules def verifyrules(rules, repo, ctxs): """Verify that there exists exactly one edit rule per given changeset. Will abort if there are to many or too few rules, a malformed rule, or a rule on a changeset outside of the user-given range. """ parsed = [] expected = set(c.hex() for c in ctxs) seen = set() for r in rules: if ' ' not in r: raise error.Abort(_('malformed line "%s"') % r) action, rest = r.split(' ', 1) ha = rest.strip().split(' ', 1)[0] try: ha = repo[ha].hex() except error.RepoError: raise error.Abort(_('unknown changeset %s listed') % ha[:12]) if ha not in expected: raise error.Abort( _('may not use changesets other than the ones listed')) if ha in seen: raise error.Abort(_('duplicated command for changeset %s') % ha[:12]) seen.add(ha) if action not in actiontable or action.startswith('_'): raise error.Abort(_('unknown action "%s"') % action) parsed.append([action, ha]) missing = sorted(expected - seen) # sort to stabilize output if missing: raise error.Abort(_('missing rules for changeset %s') % missing[0][:12], hint=_('do you want to use the drop action?')) return parsed def newnodestoabort(state): """process the list of replacements to return 1) the list of final node 2) the list of temporary node This meant to be used on abort as less data are required in this case. """ replacements = state.replacements allsuccs = set() replaced = set() for rep in replacements: allsuccs.update(rep[1]) replaced.add(rep[0]) newnodes = allsuccs - replaced tmpnodes = allsuccs & replaced return newnodes, tmpnodes def processreplacement(state): """process the list of replacements to return 1) the final mapping between original and created nodes 2) the list of temporary node created by histedit 3) the list of new commit created by histedit""" replacements = state.replacements allsuccs = set() replaced = set() fullmapping = {} # initialize basic set # fullmapping records all operations recorded in replacement for rep in replacements: allsuccs.update(rep[1]) replaced.add(rep[0]) fullmapping.setdefault(rep[0], set()).update(rep[1]) new = allsuccs - replaced tmpnodes = allsuccs & replaced # Reduce content fullmapping into direct relation between original nodes # and final node created during history edition # Dropped changeset are replaced by an empty list toproceed = set(fullmapping) final = {} while toproceed: for x in list(toproceed): succs = fullmapping[x] for s in list(succs): if s in toproceed: # non final node with unknown closure # We can't process this now break elif s in final: # non final node, replace with closure succs.remove(s) succs.update(final[s]) else: final[x] = succs toproceed.remove(x) # remove tmpnodes from final mapping for n in tmpnodes: del final[n] # we expect all changes involved in final to exist in the repo # turn `final` into list (topologically sorted) nm = state.repo.changelog.nodemap for prec, succs in final.items(): final[prec] = sorted(succs, key=nm.get) # computed topmost element (necessary for bookmark) if new: newtopmost = sorted(new, key=state.repo.changelog.rev)[-1] elif not final: # Nothing rewritten at all. we won't need `newtopmost` # It is the same as `oldtopmost` and `processreplacement` know it newtopmost = None else: # every body died. The newtopmost is the parent of the root. r = state.repo.changelog.rev newtopmost = state.repo[sorted(final, key=r)[0]].p1().node() return final, tmpnodes, new, newtopmost def movebookmarks(ui, repo, mapping, oldtopmost, newtopmost): """Move bookmark from old to newly created node""" if not mapping: # if nothing got rewritten there is not purpose for this function return moves = [] for bk, old in sorted(repo._bookmarks.iteritems()): if old == oldtopmost: # special case ensure bookmark stay on tip. # # This is arguably a feature and we may only want that for the # active bookmark. But the behavior is kept compatible with the old # version for now. moves.append((bk, newtopmost)) continue base = old new = mapping.get(base, None) if new is None: continue while not new: # base is killed, trying with parent base = repo[base].p1().node() new = mapping.get(base, (base,)) # nothing to move moves.append((bk, new[-1])) if moves: marks = repo._bookmarks for mark, new in moves: old = marks[mark] ui.note(_('histedit: moving bookmarks %s from %s to %s\n') % (mark, node.short(old), node.short(new))) marks[mark] = new marks.write() def cleanupnode(ui, repo, name, nodes): """strip a group of nodes from the repository The set of node to strip may contains unknown nodes.""" ui.debug('should strip %s nodes %s\n' % (name, ', '.join([node.short(n) for n in nodes]))) lock = None try: lock = repo.lock() # do not let filtering get in the way of the cleanse # we should probably get rid of obsolescence marker created during the # histedit, but we currently do not have such information. repo = repo.unfiltered() # Find all nodes that need to be stripped # (we use %lr instead of %ln to silently ignore unknown items) nm = repo.changelog.nodemap nodes = sorted(n for n in nodes if n in nm) roots = [c.node() for c in repo.set("roots(%ln)", nodes)] for c in roots: # We should process node in reverse order to strip tip most first. # but this trigger a bug in changegroup hook. # This would reduce bundle overhead repair.strip(ui, repo, c) finally: release(lock) def stripwrapper(orig, ui, repo, nodelist, *args, **kwargs): if isinstance(nodelist, str): nodelist = [nodelist] if os.path.exists(os.path.join(repo.path, 'histedit-state')): state = histeditstate(repo) state.read() histedit_nodes = set([repo[rulehash].node() for (action, rulehash) in state.rules if rulehash in repo]) strip_nodes = set([repo[n].node() for n in nodelist]) common_nodes = histedit_nodes & strip_nodes if common_nodes: raise error.Abort(_("histedit in progress, can't strip %s") % ', '.join(node.short(x) for x in common_nodes)) return orig(ui, repo, nodelist, *args, **kwargs) extensions.wrapfunction(repair, 'strip', stripwrapper) def summaryhook(ui, repo): if not os.path.exists(repo.join('histedit-state')): return state = histeditstate(repo) state.read() if state.rules: # i18n: column positioning for "hg summary" ui.write(_('hist: %s (histedit --continue)\n') % (ui.label(_('%d remaining'), 'histedit.remaining') % len(state.rules))) def extsetup(ui): cmdutil.summaryhooks.add('histedit', summaryhook) cmdutil.unfinishedstates.append( ['histedit-state', False, True, _('histedit in progress'), _("use 'hg histedit --continue' or 'hg histedit --abort'")])