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# Patch transplanting extension for Mercurial
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#
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# Copyright 2006, 2007 Brendan Cully <brendan@kublai.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''command to transplant changesets from another branch
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This extension allows you to transplant changes to another parent revision,
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possibly in another repository. The transplant is done using 'diff' patches.
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Transplanted patches are recorded in .hg/transplant/transplants, as a
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map from a changeset hash to its hash in the source repository.
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'''
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from mercurial.i18n import _
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import os, tempfile
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from mercurial.node import short
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from mercurial import bundlerepo, hg, merge, match
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from mercurial import patch, revlog, scmutil, util, error, cmdutil
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from mercurial import revset, templatekw
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class TransplantError(error.Abort):
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pass
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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testedwith = 'internal'
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class transplantentry(object):
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def __init__(self, lnode, rnode):
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self.lnode = lnode
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self.rnode = rnode
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class transplants(object):
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def __init__(self, path=None, transplantfile=None, opener=None):
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self.path = path
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self.transplantfile = transplantfile
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self.opener = opener
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if not opener:
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self.opener = scmutil.opener(self.path)
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self.transplants = {}
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self.dirty = False
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self.read()
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def read(self):
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abspath = os.path.join(self.path, self.transplantfile)
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if self.transplantfile and os.path.exists(abspath):
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for line in self.opener.read(self.transplantfile).splitlines():
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lnode, rnode = map(revlog.bin, line.split(':'))
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list = self.transplants.setdefault(rnode, [])
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list.append(transplantentry(lnode, rnode))
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def write(self):
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if self.dirty and self.transplantfile:
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if not os.path.isdir(self.path):
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os.mkdir(self.path)
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fp = self.opener(self.transplantfile, 'w')
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for list in self.transplants.itervalues():
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for t in list:
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l, r = map(revlog.hex, (t.lnode, t.rnode))
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fp.write(l + ':' + r + '\n')
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fp.close()
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self.dirty = False
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def get(self, rnode):
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return self.transplants.get(rnode) or []
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def set(self, lnode, rnode):
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list = self.transplants.setdefault(rnode, [])
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list.append(transplantentry(lnode, rnode))
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self.dirty = True
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def remove(self, transplant):
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list = self.transplants.get(transplant.rnode)
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if list:
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del list[list.index(transplant)]
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self.dirty = True
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class transplanter(object):
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def __init__(self, ui, repo):
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self.ui = ui
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self.path = repo.join('transplant')
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self.opener = scmutil.opener(self.path)
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self.transplants = transplants(self.path, 'transplants',
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opener=self.opener)
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self.editor = None
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def applied(self, repo, node, parent):
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'''returns True if a node is already an ancestor of parent
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or is parent or has already been transplanted'''
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if hasnode(repo, parent):
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parentrev = repo.changelog.rev(parent)
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if hasnode(repo, node):
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rev = repo.changelog.rev(node)
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reachable = repo.changelog.ancestors([parentrev], rev,
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inclusive=True)
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if rev in reachable:
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return True
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for t in self.transplants.get(node):
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# it might have been stripped
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if not hasnode(repo, t.lnode):
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self.transplants.remove(t)
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return False
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lnoderev = repo.changelog.rev(t.lnode)
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if lnoderev in repo.changelog.ancestors([parentrev], lnoderev,
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inclusive=True):
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return True
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return False
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def apply(self, repo, source, revmap, merges, opts={}):
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'''apply the revisions in revmap one by one in revision order'''
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revs = sorted(revmap)
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p1, p2 = repo.dirstate.parents()
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pulls = []
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diffopts = patch.diffopts(self.ui, opts)
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diffopts.git = True
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lock = wlock = tr = None
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try:
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wlock = repo.wlock()
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lock = repo.lock()
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tr = repo.transaction('transplant')
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for rev in revs:
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node = revmap[rev]
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revstr = '%s:%s' % (rev, short(node))
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if self.applied(repo, node, p1):
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self.ui.warn(_('skipping already applied revision %s\n') %
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revstr)
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continue
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parents = source.changelog.parents(node)
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if not (opts.get('filter') or opts.get('log')):
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# If the changeset parent is the same as the
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# wdir's parent, just pull it.
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if parents[0] == p1:
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pulls.append(node)
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p1 = node
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continue
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if pulls:
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if source != repo:
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repo.pull(source.peer(), heads=pulls)
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merge.update(repo, pulls[-1], False, False, None)
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p1, p2 = repo.dirstate.parents()
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pulls = []
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domerge = False
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if node in merges:
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# pulling all the merge revs at once would mean we
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# couldn't transplant after the latest even if
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# transplants before them fail.
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domerge = True
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if not hasnode(repo, node):
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repo.pull(source, heads=[node])
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skipmerge = False
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if parents[1] != revlog.nullid:
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if not opts.get('parent'):
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self.ui.note(_('skipping merge changeset %s:%s\n')
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% (rev, short(node)))
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skipmerge = True
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else:
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parent = source.lookup(opts['parent'])
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if parent not in parents:
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raise util.Abort(_('%s is not a parent of %s') %
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(short(parent), short(node)))
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else:
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parent = parents[0]
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if skipmerge:
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patchfile = None
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else:
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fd, patchfile = tempfile.mkstemp(prefix='hg-transplant-')
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fp = os.fdopen(fd, 'w')
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gen = patch.diff(source, parent, node, opts=diffopts)
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for chunk in gen:
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fp.write(chunk)
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fp.close()
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del revmap[rev]
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if patchfile or domerge:
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try:
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try:
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n = self.applyone(repo, node,
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source.changelog.read(node),
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patchfile, merge=domerge,
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log=opts.get('log'),
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filter=opts.get('filter'))
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except TransplantError:
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# Do not rollback, it is up to the user to
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# fix the merge or cancel everything
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tr.close()
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raise
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if n and domerge:
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self.ui.status(_('%s merged at %s\n') % (revstr,
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short(n)))
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elif n:
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self.ui.status(_('%s transplanted to %s\n')
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% (short(node),
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short(n)))
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finally:
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if patchfile:
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os.unlink(patchfile)
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tr.close()
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if pulls:
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repo.pull(source.peer(), heads=pulls)
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merge.update(repo, pulls[-1], False, False, None)
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finally:
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self.saveseries(revmap, merges)
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self.transplants.write()
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if tr:
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tr.release()
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lock.release()
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wlock.release()
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def filter(self, filter, node, changelog, patchfile):
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'''arbitrarily rewrite changeset before applying it'''
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self.ui.status(_('filtering %s\n') % patchfile)
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user, date, msg = (changelog[1], changelog[2], changelog[4])
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fd, headerfile = tempfile.mkstemp(prefix='hg-transplant-')
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fp = os.fdopen(fd, 'w')
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fp.write("# HG changeset patch\n")
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fp.write("# User %s\n" % user)
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fp.write("# Date %d %d\n" % date)
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fp.write(msg + '\n')
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fp.close()
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try:
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util.system('%s %s %s' % (filter, util.shellquote(headerfile),
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util.shellquote(patchfile)),
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environ={'HGUSER': changelog[1],
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'HGREVISION': revlog.hex(node),
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},
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onerr=util.Abort, errprefix=_('filter failed'),
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out=self.ui.fout)
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user, date, msg = self.parselog(file(headerfile))[1:4]
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finally:
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os.unlink(headerfile)
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return (user, date, msg)
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def applyone(self, repo, node, cl, patchfile, merge=False, log=False,
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filter=None):
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'''apply the patch in patchfile to the repository as a transplant'''
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(manifest, user, (time, timezone), files, message) = cl[:5]
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date = "%d %d" % (time, timezone)
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extra = {'transplant_source': node}
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if filter:
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(user, date, message) = self.filter(filter, node, cl, patchfile)
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if log:
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# we don't translate messages inserted into commits
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message += '\n(transplanted from %s)' % revlog.hex(node)
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self.ui.status(_('applying %s\n') % short(node))
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self.ui.note('%s %s\n%s\n' % (user, date, message))
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if not patchfile and not merge:
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raise util.Abort(_('can only omit patchfile if merging'))
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if patchfile:
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try:
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files = set()
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patch.patch(self.ui, repo, patchfile, files=files, eolmode=None)
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files = list(files)
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except Exception, inst:
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seriespath = os.path.join(self.path, 'series')
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if os.path.exists(seriespath):
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os.unlink(seriespath)
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p1 = repo.dirstate.p1()
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p2 = node
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self.log(user, date, message, p1, p2, merge=merge)
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self.ui.write(str(inst) + '\n')
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raise TransplantError(_('fix up the merge and run '
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'hg transplant --continue'))
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else:
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files = None
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if merge:
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p1, p2 = repo.dirstate.parents()
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repo.setparents(p1, node)
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m = match.always(repo.root, '')
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else:
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m = match.exact(repo.root, '', files)
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n = repo.commit(message, user, date, extra=extra, match=m,
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editor=self.editor)
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if not n:
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self.ui.warn(_('skipping emptied changeset %s\n') % short(node))
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return None
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if not merge:
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self.transplants.set(n, node)
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return n
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def resume(self, repo, source, opts):
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'''recover last transaction and apply remaining changesets'''
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if os.path.exists(os.path.join(self.path, 'journal')):
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n, node = self.recover(repo, source, opts)
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self.ui.status(_('%s transplanted as %s\n') % (short(node),
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short(n)))
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seriespath = os.path.join(self.path, 'series')
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if not os.path.exists(seriespath):
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self.transplants.write()
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return
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nodes, merges = self.readseries()
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revmap = {}
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for n in nodes:
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revmap[source.changelog.rev(n)] = n
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os.unlink(seriespath)
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self.apply(repo, source, revmap, merges, opts)
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def recover(self, repo, source, opts):
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'''commit working directory using journal metadata'''
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node, user, date, message, parents = self.readlog()
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merge = False
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if not user or not date or not message or not parents[0]:
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raise util.Abort(_('transplant log file is corrupt'))
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parent = parents[0]
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if len(parents) > 1:
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if opts.get('parent'):
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parent = source.lookup(opts['parent'])
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if parent not in parents:
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raise util.Abort(_('%s is not a parent of %s') %
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(short(parent), short(node)))
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else:
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merge = True
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extra = {'transplant_source': node}
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wlock = repo.wlock()
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try:
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p1, p2 = repo.dirstate.parents()
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if p1 != parent:
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raise util.Abort(
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_('working dir not at transplant parent %s') %
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revlog.hex(parent))
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if merge:
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repo.setparents(p1, parents[1])
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n = repo.commit(message, user, date, extra=extra,
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editor=self.editor)
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if not n:
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raise util.Abort(_('commit failed'))
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if not merge:
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self.transplants.set(n, node)
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self.unlog()
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return n, node
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finally:
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wlock.release()
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def readseries(self):
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nodes = []
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merges = []
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cur = nodes
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for line in self.opener.read('series').splitlines():
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if line.startswith('# Merges'):
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cur = merges
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continue
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cur.append(revlog.bin(line))
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return (nodes, merges)
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def saveseries(self, revmap, merges):
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if not revmap:
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return
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if not os.path.isdir(self.path):
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os.mkdir(self.path)
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series = self.opener('series', 'w')
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for rev in sorted(revmap):
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series.write(revlog.hex(revmap[rev]) + '\n')
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if merges:
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series.write('# Merges\n')
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for m in merges:
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series.write(revlog.hex(m) + '\n')
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series.close()
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def parselog(self, fp):
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parents = []
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message = []
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node = revlog.nullid
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inmsg = False
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user = None
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date = None
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for line in fp.read().splitlines():
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if inmsg:
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message.append(line)
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elif line.startswith('# User '):
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user = line[7:]
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elif line.startswith('# Date '):
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date = line[7:]
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elif line.startswith('# Node ID '):
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node = revlog.bin(line[10:])
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elif line.startswith('# Parent '):
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parents.append(revlog.bin(line[9:]))
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elif not line.startswith('# '):
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inmsg = True
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message.append(line)
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if None in (user, date):
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raise util.Abort(_("filter corrupted changeset (no user or date)"))
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return (node, user, date, '\n'.join(message), parents)
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def log(self, user, date, message, p1, p2, merge=False):
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'''journal changelog metadata for later recover'''
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if not os.path.isdir(self.path):
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os.mkdir(self.path)
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fp = self.opener('journal', 'w')
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fp.write('# User %s\n' % user)
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fp.write('# Date %s\n' % date)
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fp.write('# Node ID %s\n' % revlog.hex(p2))
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fp.write('# Parent ' + revlog.hex(p1) + '\n')
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if merge:
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fp.write('# Parent ' + revlog.hex(p2) + '\n')
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fp.write(message.rstrip() + '\n')
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fp.close()
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def readlog(self):
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return self.parselog(self.opener('journal'))
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def unlog(self):
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'''remove changelog journal'''
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absdst = os.path.join(self.path, 'journal')
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if os.path.exists(absdst):
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os.unlink(absdst)
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|
|
|
|
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) is not None
|
|
|
except error.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(repo[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]
|
|
|
for chunk in patch.diff(repo, parent, node):
|
|
|
ui.write(chunk)
|
|
|
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
|
|
|
displayer.close()
|
|
|
return (transplants, merges)
|
|
|
|
|
|
@command('transplant',
|
|
|
[('s', 'source', '', _('transplant changesets from REPO'), _('REPO')),
|
|
|
('b', 'branch', [], _('use this source changeset as head'), _('REV')),
|
|
|
('a', 'all', None, _('pull all changesets up to the --branch revisions')),
|
|
|
('p', 'prune', [], _('skip over REV'), _('REV')),
|
|
|
('m', 'merge', [], _('merge at REV'), _('REV')),
|
|
|
('', 'parent', '',
|
|
|
_('parent to choose when transplanting merge'), _('REV')),
|
|
|
('e', 'edit', False, _('invoke editor on commit messages')),
|
|
|
('', 'log', None, _('append transplant info to log message')),
|
|
|
('c', 'continue', None, _('continue last transplant session '
|
|
|
'after fixing conflicts')),
|
|
|
('', 'filter', '',
|
|
|
_('filter changesets through command'), _('CMD'))],
|
|
|
_('hg transplant [-s REPO] [-b BRANCH [-a]] [-p REV] '
|
|
|
'[-m REV] [REV]...'))
|
|
|
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. The changesets
|
|
|
are copied and will thus appear twice in the history with different
|
|
|
identities.
|
|
|
|
|
|
Consider using the graft command if everything is inside the same
|
|
|
repository - it will use merges and will usually give a better result.
|
|
|
Use the rebase extension if the changesets are unpublished and you want
|
|
|
to move them instead of copying them.
|
|
|
|
|
|
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.
|
|
|
|
|
|
--source/-s specifies another repository to use for selecting changesets,
|
|
|
just as if it temporarily had been pulled.
|
|
|
If --branch/-b is specified, these revisions will be used as
|
|
|
heads when deciding which changsets to transplant, just as if only
|
|
|
these revisions had been pulled.
|
|
|
If --all/-a is specified, all the revisions up to the heads specified
|
|
|
with --branch will be transplanted.
|
|
|
|
|
|
Example:
|
|
|
|
|
|
- transplant all changes up to REV on top of your current revision::
|
|
|
|
|
|
hg transplant --branch REV --all
|
|
|
|
|
|
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.
|
|
|
|
|
|
Merge changesets may be transplanted directly by specifying the
|
|
|
proper parent changeset by calling :hg:`transplant --parent`.
|
|
|
|
|
|
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/-c`.
|
|
|
'''
|
|
|
def incwalk(repo, csets, match=util.always):
|
|
|
for node in csets:
|
|
|
if match(node):
|
|
|
yield node
|
|
|
|
|
|
def transplantwalk(repo, dest, heads, match=util.always):
|
|
|
'''Yield all nodes that are ancestors of a head but not ancestors
|
|
|
of dest.
|
|
|
If no heads are specified, the heads of repo will be used.'''
|
|
|
if not heads:
|
|
|
heads = repo.heads()
|
|
|
ancestors = []
|
|
|
for head in heads:
|
|
|
ancestors.append(repo.changelog.ancestor(dest, head))
|
|
|
for node in repo.changelog.nodesbetween(ancestors, heads)[0]:
|
|
|
if match(node):
|
|
|
yield node
|
|
|
|
|
|
def checkopts(opts, revs):
|
|
|
if opts.get('continue'):
|
|
|
if opts.get('branch') or opts.get('all') or opts.get('merge'):
|
|
|
raise util.Abort(_('--continue is incompatible with '
|
|
|
'--branch, --all and --merge'))
|
|
|
return
|
|
|
if not (opts.get('source') or revs or
|
|
|
opts.get('merge') or opts.get('branch')):
|
|
|
raise util.Abort(_('no source URL, branch revision 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)
|
|
|
if opts.get('edit'):
|
|
|
tp.editor = cmdutil.commitforceeditor
|
|
|
|
|
|
p1, p2 = repo.dirstate.parents()
|
|
|
if len(repo) > 0 and 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'))
|
|
|
|
|
|
sourcerepo = opts.get('source')
|
|
|
if sourcerepo:
|
|
|
peer = hg.peer(repo, opts, ui.expandpath(sourcerepo))
|
|
|
heads = map(peer.lookup, opts.get('branch', ()))
|
|
|
source, csets, cleanupfn = bundlerepo.getremotechanges(ui, repo, peer,
|
|
|
onlyheads=heads, force=True)
|
|
|
else:
|
|
|
source = repo
|
|
|
heads = map(source.lookup, opts.get('branch', ()))
|
|
|
cleanupfn = None
|
|
|
|
|
|
try:
|
|
|
if opts.get('continue'):
|
|
|
tp.resume(repo, source, opts)
|
|
|
return
|
|
|
|
|
|
tf = tp.transplantfilter(repo, source, p1)
|
|
|
if opts.get('prune'):
|
|
|
prune = set(source.lookup(r)
|
|
|
for r in scmutil.revrange(source, opts.get('prune')))
|
|
|
matchfn = lambda x: tf(x) and x not in prune
|
|
|
else:
|
|
|
matchfn = tf
|
|
|
merges = map(source.lookup, opts.get('merge', ()))
|
|
|
revmap = {}
|
|
|
if revs:
|
|
|
for r in scmutil.revrange(source, revs):
|
|
|
revmap[int(r)] = source.lookup(r)
|
|
|
elif opts.get('all') or not merges:
|
|
|
if source != repo:
|
|
|
alltransplants = incwalk(source, csets, match=matchfn)
|
|
|
else:
|
|
|
alltransplants = transplantwalk(source, p1, heads,
|
|
|
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
|
|
|
|
|
|
tp.apply(repo, source, revmap, merges, opts)
|
|
|
finally:
|
|
|
if cleanupfn:
|
|
|
cleanupfn()
|
|
|
|
|
|
def revsettransplanted(repo, subset, x):
|
|
|
"""``transplanted([set])``
|
|
|
Transplanted changesets in set, or all transplanted changesets.
|
|
|
"""
|
|
|
if x:
|
|
|
s = revset.getset(repo, subset, x)
|
|
|
else:
|
|
|
s = subset
|
|
|
return [r for r in s if repo[r].extra().get('transplant_source')]
|
|
|
|
|
|
def kwtransplanted(repo, ctx, **args):
|
|
|
""":transplanted: String. The node identifier of the transplanted
|
|
|
changeset if any."""
|
|
|
n = ctx.extra().get('transplant_source')
|
|
|
return n and revlog.hex(n) or ''
|
|
|
|
|
|
def extsetup(ui):
|
|
|
revset.symbols['transplanted'] = revsettransplanted
|
|
|
templatekw.keywords['transplanted'] = kwtransplanted
|
|
|
|
|
|
# tell hggettext to extract docstrings from these functions:
|
|
|
i18nfunctions = [revsettransplanted, kwtransplanted]
|
|
|
|
