Mercurial > hg
view hgext/transplant.py @ 6520:ba0b2dacc623
fix import with -p0
author | Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
---|---|
date | Sat, 12 Apr 2008 22:41:07 -0400 |
parents | e75aab656f46 |
children | f67d1468ac50 |
line wrap: on
line source
# Patch transplanting extension for Mercurial # # Copyright 2006, 2007 Brendan Cully <brendan@kublai.com> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. from mercurial.i18n import _ import os, tempfile from mercurial import bundlerepo, changegroup, cmdutil, hg, merge from mercurial import patch, revlog, util '''patch transplanting tool This extension allows you to transplant patches from another branch. Transplanted patches are recorded in .hg/transplant/transplants, as a map from a changeset hash to its hash in the source repository. ''' class transplantentry: def __init__(self, lnode, rnode): self.lnode = lnode self.rnode = rnode class transplants: def __init__(self, path=None, transplantfile=None, opener=None): self.path = path self.transplantfile = transplantfile self.opener = opener if not opener: self.opener = util.opener(self.path) self.transplants = [] self.dirty = False self.read() def read(self): abspath = os.path.join(self.path, self.transplantfile) if self.transplantfile and os.path.exists(abspath): for line in self.opener(self.transplantfile).read().splitlines(): lnode, rnode = map(revlog.bin, line.split(':')) self.transplants.append(transplantentry(lnode, rnode)) def write(self): if self.dirty and self.transplantfile: if not os.path.isdir(self.path): os.mkdir(self.path) fp = self.opener(self.transplantfile, 'w') for c in self.transplants: l, r = map(revlog.hex, (c.lnode, c.rnode)) fp.write(l + ':' + r + '\n') fp.close() self.dirty = False def get(self, rnode): return [t for t in self.transplants if t.rnode == rnode] def set(self, lnode, rnode): self.transplants.append(transplantentry(lnode, rnode)) self.dirty = True def remove(self, transplant): del self.transplants[self.transplants.index(transplant)] self.dirty = True class transplanter: def __init__(self, ui, repo): self.ui = ui self.path = repo.join('transplant') self.opener = util.opener(self.path) self.transplants = transplants(self.path, 'transplants', opener=self.opener) def applied(self, repo, node, parent): '''returns True if a node is already an ancestor of parent or has already been transplanted''' if hasnode(repo, node): if node in repo.changelog.reachable(parent, stop=node): return True for t in self.transplants.get(node): # it might have been stripped if not hasnode(repo, t.lnode): self.transplants.remove(t) return False if t.lnode in repo.changelog.reachable(parent, stop=t.lnode): return True return False def apply(self, repo, source, revmap, merges, opts={}): '''apply the revisions in revmap one by one in revision order''' revs = revmap.keys() revs.sort() p1, p2 = repo.dirstate.parents() pulls = [] diffopts = patch.diffopts(self.ui, opts) diffopts.git = True lock = wlock = None try: wlock = repo.wlock() lock = repo.lock() for rev in revs: node = revmap[rev] revstr = '%s:%s' % (rev, revlog.short(node)) if self.applied(repo, node, p1): self.ui.warn(_('skipping already applied revision %s\n') % revstr) continue parents = source.changelog.parents(node) if not opts.get('filter'): # If the changeset parent is the same as the wdir's parent, # just pull it. if parents[0] == p1: pulls.append(node) p1 = node continue if pulls: if source != repo: repo.pull(source, heads=pulls) merge.update(repo, pulls[-1], False, False, None) p1, p2 = repo.dirstate.parents() pulls = [] domerge = False if node in merges: # pulling all the merge revs at once would mean we couldn't # transplant after the latest even if transplants before them # fail. domerge = True if not hasnode(repo, node): repo.pull(source, heads=[node]) if parents[1] != revlog.nullid: self.ui.note(_('skipping merge changeset %s:%s\n') % (rev, revlog.short(node))) patchfile = None else: fd, patchfile = tempfile.mkstemp(prefix='hg-transplant-') fp = os.fdopen(fd, 'w') patch.diff(source, parents[0], node, fp=fp, opts=diffopts) fp.close() del revmap[rev] if patchfile or domerge: try: n = self.applyone(repo, node, source.changelog.read(node), patchfile, merge=domerge, log=opts.get('log'), filter=opts.get('filter')) if n and domerge: self.ui.status(_('%s merged at %s\n') % (revstr, revlog.short(n))) elif n: self.ui.status(_('%s transplanted to %s\n') % (revlog.short(node), revlog.short(n))) finally: if patchfile: os.unlink(patchfile) if pulls: repo.pull(source, heads=pulls) merge.update(repo, pulls[-1], False, False, None) finally: self.saveseries(revmap, merges) self.transplants.write() del lock, wlock def filter(self, filter, changelog, patchfile): '''arbitrarily rewrite changeset before applying it''' self.ui.status('filtering %s\n' % patchfile) user, date, msg = (changelog[1], changelog[2], changelog[4]) fd, headerfile = tempfile.mkstemp(prefix='hg-transplant-') fp = os.fdopen(fd, 'w') fp.write("# HG changeset patch\n") fp.write("# User %s\n" % user) fp.write("# Date %d %d\n" % date) fp.write(changelog[4]) fp.close() try: util.system('%s %s %s' % (filter, util.shellquote(headerfile), util.shellquote(patchfile)), environ={'HGUSER': changelog[1]}, onerr=util.Abort, errprefix=_('filter failed')) user, date, msg = self.parselog(file(headerfile))[1:4] finally: os.unlink(headerfile) return (user, date, msg) def applyone(self, repo, node, cl, patchfile, merge=False, log=False, filter=None): '''apply the patch in patchfile to the repository as a transplant''' (manifest, user, (time, timezone), files, message) = cl[:5] date = "%d %d" % (time, timezone) extra = {'transplant_source': node} if filter: (user, date, message) = self.filter(filter, cl, patchfile) if log: message += '\n(transplanted from %s)' % revlog.hex(node) self.ui.status(_('applying %s\n') % revlog.short(node)) self.ui.note('%s %s\n%s\n' % (user, date, message)) if not patchfile and not merge: raise util.Abort(_('can only omit patchfile if merging')) if patchfile: try: files = {} try: fuzz = patch.patch(patchfile, self.ui, cwd=repo.root, files=files) if not files: self.ui.warn(_('%s: empty changeset') % revlog.hex(node)) return None finally: files = patch.updatedir(self.ui, repo, files) except Exception, inst: if filter: os.unlink(patchfile) seriespath = os.path.join(self.path, 'series') if os.path.exists(seriespath): os.unlink(seriespath) p1 = repo.dirstate.parents()[0] p2 = node self.log(user, date, message, p1, p2, merge=merge) self.ui.write(str(inst) + '\n') raise util.Abort(_('Fix up the merge and run hg transplant --continue')) else: files = None if merge: p1, p2 = repo.dirstate.parents() repo.dirstate.setparents(p1, node) n = repo.commit(files, message, user, date, extra=extra) if not merge: self.transplants.set(n, node) return n def resume(self, repo, source, opts=None): '''recover last transaction and apply remaining changesets''' if os.path.exists(os.path.join(self.path, 'journal')): n, node = self.recover(repo) self.ui.status(_('%s transplanted as %s\n') % (revlog.short(node), revlog.short(n))) seriespath = os.path.join(self.path, 'series') if not os.path.exists(seriespath): self.transplants.write() return nodes, merges = self.readseries() revmap = {} for n in nodes: revmap[source.changelog.rev(n)] = n os.unlink(seriespath) self.apply(repo, source, revmap, merges, opts) def recover(self, repo): '''commit working directory using journal metadata''' node, user, date, message, parents = self.readlog() merge = len(parents) == 2 if not user or not date or not message or not parents[0]: raise util.Abort(_('transplant log file is corrupt')) extra = {'transplant_source': node} wlock = repo.wlock() try: p1, p2 = repo.dirstate.parents() if p1 != parents[0]: raise util.Abort( _('working dir not at transplant parent %s') % revlog.hex(parents[0])) if merge: repo.dirstate.setparents(p1, parents[1]) n = repo.commit(None, message, user, date, extra=extra) if not n: raise util.Abort(_('commit failed')) if not merge: self.transplants.set(n, node) self.unlog() return n, node finally: del wlock def readseries(self): nodes = [] merges = [] cur = nodes for line in self.opener('series').read().splitlines(): if line.startswith('# Merges'): cur = merges continue cur.append(revlog.bin(line)) return (nodes, merges) def saveseries(self, revmap, merges): if not revmap: return if not os.path.isdir(self.path): os.mkdir(self.path) series = self.opener('series', 'w') revs = revmap.keys() revs.sort() for rev in revs: series.write(revlog.hex(revmap[rev]) + '\n') if merges: series.write('# Merges\n') for m in merges: series.write(revlog.hex(m) + '\n') series.close() def parselog(self, fp): parents = [] message = [] node = revlog.nullid inmsg = False for line in fp.read().splitlines(): if inmsg: message.append(line) elif line.startswith('# User '): user = line[7:] elif line.startswith('# Date '): date = line[7:] elif line.startswith('# Node ID '): node = revlog.bin(line[10:]) elif line.startswith('# Parent '): parents.append(revlog.bin(line[9:])) elif not line.startswith('#'): inmsg = True message.append(line) return (node, user, date, '\n'.join(message), parents) def log(self, user, date, message, p1, p2, merge=False): '''journal changelog metadata for later recover''' if not os.path.isdir(self.path): os.mkdir(self.path) fp = self.opener('journal', 'w') fp.write('# User %s\n' % user) fp.write('# Date %s\n' % date) fp.write('# Node ID %s\n' % revlog.hex(p2)) fp.write('# Parent ' + revlog.hex(p1) + '\n') if merge: fp.write('# Parent ' + revlog.hex(p2) + '\n') fp.write(message.rstrip() + '\n') fp.close() def readlog(self): return self.parselog(self.opener('journal')) def unlog(self): '''remove changelog journal''' absdst = os.path.join(self.path, 'journal') if os.path.exists(absdst): os.unlink(absdst) def transplantfilter(self, repo, source, root): def matchfn(node): if self.applied(repo, node, root): return False if source.changelog.parents(node)[1] != revlog.nullid: return False extra = source.changelog.read(node)[5] cnode = extra.get('transplant_source') if cnode and self.applied(repo, cnode, root): return False return True return matchfn def hasnode(repo, node): try: return repo.changelog.rev(node) != None except revlog.RevlogError: return False def browserevs(ui, repo, nodes, opts): '''interactively transplant changesets''' def browsehelp(ui): ui.write('y: transplant this changeset\n' 'n: skip this changeset\n' 'm: merge at this changeset\n' 'p: show patch\n' 'c: commit selected changesets\n' 'q: cancel transplant\n' '?: show this help\n') displayer = cmdutil.show_changeset(ui, repo, opts) transplants = [] merges = [] for node in nodes: displayer.show(changenode=node) action = None while not action: action = ui.prompt(_('apply changeset? [ynmpcq?]:')) if action == '?': browsehelp(ui) action = None elif action == 'p': parent = repo.changelog.parents(node)[0] patch.diff(repo, parent, node) action = None elif action not in ('y', 'n', 'm', 'c', 'q'): ui.write('no such option\n') action = None if action == 'y': transplants.append(node) elif action == 'm': merges.append(node) elif action == 'c': break elif action == 'q': transplants = () merges = () break return (transplants, merges) def transplant(ui, repo, *revs, **opts): '''transplant changesets from another branch Selected changesets will be applied on top of the current working directory with the log of the original changeset. If --log is specified, log messages will have a comment appended of the form: (transplanted from CHANGESETHASH) You can rewrite the changelog message with the --filter option. Its argument will be invoked with the current changelog message as $1 and the patch as $2. If --source is specified, selects changesets from the named repository. If --branch is specified, selects changesets from the branch holding the named revision, up to that revision. If --all is specified, all changesets on the branch will be transplanted, otherwise you will be prompted to select the changesets you want. hg transplant --branch REVISION --all will rebase the selected branch (up to the named revision) onto your current working directory. You can optionally mark selected transplanted changesets as merge changesets. You will not be prompted to transplant any ancestors of a merged transplant, and you can merge descendants of them normally instead of transplanting them. If no merges or revisions are provided, hg transplant will start an interactive changeset browser. If a changeset application fails, you can fix the merge by hand and then resume where you left off by calling hg transplant --continue. ''' def getoneitem(opts, item, errmsg): val = opts.get(item) if val: if len(val) > 1: raise util.Abort(errmsg) else: return val[0] def getremotechanges(repo, url): sourcerepo = ui.expandpath(url) source = hg.repository(ui, sourcerepo) incoming = repo.findincoming(source, force=True) if not incoming: return (source, None, None) bundle = None if not source.local(): cg = source.changegroup(incoming, 'incoming') bundle = changegroup.writebundle(cg, None, 'HG10UN') source = bundlerepo.bundlerepository(ui, repo.root, bundle) return (source, incoming, bundle) def incwalk(repo, incoming, branches, match=util.always): if not branches: branches=None for node in repo.changelog.nodesbetween(incoming, branches)[0]: if match(node): yield node def transplantwalk(repo, root, branches, match=util.always): if not branches: branches = repo.heads() ancestors = [] for branch in branches: ancestors.append(repo.changelog.ancestor(root, branch)) for node in repo.changelog.nodesbetween(ancestors, branches)[0]: if match(node): yield node def checkopts(opts, revs): if opts.get('continue'): if filter(lambda opt: opts.get(opt), ('branch', 'all', 'merge')): raise util.Abort(_('--continue is incompatible with branch, all or merge')) return if not (opts.get('source') or revs or opts.get('merge') or opts.get('branch')): raise util.Abort(_('no source URL, branch tag or revision list provided')) if opts.get('all'): if not opts.get('branch'): raise util.Abort(_('--all requires a branch revision')) if revs: raise util.Abort(_('--all is incompatible with a revision list')) checkopts(opts, revs) if not opts.get('log'): opts['log'] = ui.config('transplant', 'log') if not opts.get('filter'): opts['filter'] = ui.config('transplant', 'filter') tp = transplanter(ui, repo) p1, p2 = repo.dirstate.parents() if p1 == revlog.nullid: raise util.Abort(_('no revision checked out')) if not opts.get('continue'): if p2 != revlog.nullid: raise util.Abort(_('outstanding uncommitted merges')) m, a, r, d = repo.status()[:4] if m or a or r or d: raise util.Abort(_('outstanding local changes')) bundle = None source = opts.get('source') if source: (source, incoming, bundle) = getremotechanges(repo, source) else: source = repo try: if opts.get('continue'): tp.resume(repo, source, opts) return tf=tp.transplantfilter(repo, source, p1) if opts.get('prune'): prune = [source.lookup(r) for r in cmdutil.revrange(source, opts.get('prune'))] matchfn = lambda x: tf(x) and x not in prune else: matchfn = tf branches = map(source.lookup, opts.get('branch', ())) merges = map(source.lookup, opts.get('merge', ())) revmap = {} if revs: for r in cmdutil.revrange(source, revs): revmap[int(r)] = source.lookup(r) elif opts.get('all') or not merges: if source != repo: alltransplants = incwalk(source, incoming, branches, match=matchfn) else: alltransplants = transplantwalk(source, p1, branches, match=matchfn) if opts.get('all'): revs = alltransplants else: revs, newmerges = browserevs(ui, source, alltransplants, opts) merges.extend(newmerges) for r in revs: revmap[source.changelog.rev(r)] = r for r in merges: revmap[source.changelog.rev(r)] = r revs = revmap.keys() revs.sort() pulls = [] tp.apply(repo, source, revmap, merges, opts) finally: if bundle: source.close() os.unlink(bundle) cmdtable = { "transplant": (transplant, [('s', 'source', '', _('pull patches from REPOSITORY')), ('b', 'branch', [], _('pull patches from branch BRANCH')), ('a', 'all', None, _('pull all changesets up to BRANCH')), ('p', 'prune', [], _('skip over REV')), ('m', 'merge', [], _('merge at REV')), ('', 'log', None, _('append transplant info to log message')), ('c', 'continue', None, _('continue last transplant session after repair')), ('', 'filter', '', _('filter changesets through FILTER'))], _('hg transplant [-s REPOSITORY] [-b BRANCH [-a]] [-p REV] [-m REV] [REV]...')) }