rebase: add --detach option to detach intermediate revisions (
issue1950)
When rebasing an intermediate revision, rebase keeps a parent relationship
with the original parent. This option forces the removal of this relationship.
In more depth, it 'fakes' null merges between the target revision and the
ancestors of source, dropping every change from the ancestors.
The result is that every change in source and its descendants will be rebased,
ignoring the changes in its ancestors.
# hg.py - repository classes for mercurial
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from i18n import _
from lock import release
import localrepo, bundlerepo, httprepo, sshrepo, statichttprepo
import lock, util, extensions, error, encoding
import merge as _merge
import verify as _verify
import errno, os, shutil
def _local(path):
return (os.path.isfile(util.drop_scheme('file', path)) and
bundlerepo or localrepo)
def parseurl(url, revs=[]):
'''parse url#branch, returning url, branch + revs'''
if '#' not in url:
return url, (revs or None), revs and revs[-1] or None
url, branch = url.split('#', 1)
checkout = revs and revs[-1] or branch
return url, (revs or []) + [branch], checkout
schemes = {
'bundle': bundlerepo,
'file': _local,
'http': httprepo,
'https': httprepo,
'ssh': sshrepo,
'static-http': statichttprepo,
}
def _lookup(path):
scheme = 'file'
if path:
c = path.find(':')
if c > 0:
scheme = path[:c]
thing = schemes.get(scheme) or schemes['file']
try:
return thing(path)
except TypeError:
return thing
def islocal(repo):
'''return true if repo or path is local'''
if isinstance(repo, str):
try:
return _lookup(repo).islocal(repo)
except AttributeError:
return False
return repo.local()
def repository(ui, path='', create=False):
"""return a repository object for the specified path"""
repo = _lookup(path).instance(ui, path, create)
ui = getattr(repo, "ui", ui)
for name, module in extensions.extensions():
hook = getattr(module, 'reposetup', None)
if hook:
hook(ui, repo)
return repo
def defaultdest(source):
'''return default destination of clone if none is given'''
return os.path.basename(os.path.normpath(source))
def localpath(path):
if path.startswith('file://localhost/'):
return path[16:]
if path.startswith('file://'):
return path[7:]
if path.startswith('file:'):
return path[5:]
return path
def share(ui, source, dest=None, update=True):
'''create a shared repository'''
if not islocal(source):
raise util.Abort(_('can only share local repositories'))
if not dest:
dest = defaultdest(source)
else:
dest = ui.expandpath(dest)
if isinstance(source, str):
origsource = ui.expandpath(source)
source, rev, checkout = parseurl(origsource, '')
srcrepo = repository(ui, source)
else:
srcrepo = source
origsource = source = srcrepo.url()
checkout = None
sharedpath = srcrepo.sharedpath # if our source is already sharing
root = os.path.realpath(dest)
roothg = os.path.join(root, '.hg')
if os.path.exists(roothg):
raise util.Abort(_('destination already exists'))
if not os.path.isdir(root):
os.mkdir(root)
os.mkdir(roothg)
requirements = ''
try:
requirements = srcrepo.opener('requires').read()
except IOError, inst:
if inst.errno != errno.ENOENT:
raise
requirements += 'shared\n'
file(os.path.join(roothg, 'requires'), 'w').write(requirements)
file(os.path.join(roothg, 'sharedpath'), 'w').write(sharedpath)
default = srcrepo.ui.config('paths', 'default')
if default:
f = file(os.path.join(roothg, 'hgrc'), 'w')
f.write('[paths]\ndefault = %s\n' % default)
f.close()
r = repository(ui, root)
if update:
r.ui.status(_("updating working directory\n"))
if update is not True:
checkout = update
for test in (checkout, 'default', 'tip'):
if test is None:
continue
try:
uprev = r.lookup(test)
break
except error.RepoLookupError:
continue
_update(r, uprev)
def clone(ui, source, dest=None, pull=False, rev=None, update=True,
stream=False):
"""Make a copy of an existing repository.
Create a copy of an existing repository in a new directory. The
source and destination are URLs, as passed to the repository
function. Returns a pair of repository objects, the source and
newly created destination.
The location of the source is added to the new repository's
.hg/hgrc file, as the default to be used for future pulls and
pushes.
If an exception is raised, the partly cloned/updated destination
repository will be deleted.
Arguments:
source: repository object or URL
dest: URL of destination repository to create (defaults to base
name of source repository)
pull: always pull from source repository, even in local case
stream: stream raw data uncompressed from repository (fast over
LAN, slow over WAN)
rev: revision to clone up to (implies pull=True)
update: update working directory after clone completes, if
destination is local repository (True means update to default rev,
anything else is treated as a revision)
"""
if isinstance(source, str):
origsource = ui.expandpath(source)
source, rev, checkout = parseurl(origsource, rev)
src_repo = repository(ui, source)
else:
src_repo = source
origsource = source = src_repo.url()
checkout = rev and rev[-1] or None
if dest is None:
dest = defaultdest(source)
ui.status(_("destination directory: %s\n") % dest)
else:
dest = ui.expandpath(dest)
dest = localpath(dest)
source = localpath(source)
if os.path.exists(dest):
if not os.path.isdir(dest):
raise util.Abort(_("destination '%s' already exists") % dest)
elif os.listdir(dest):
raise util.Abort(_("destination '%s' is not empty") % dest)
class DirCleanup(object):
def __init__(self, dir_):
self.rmtree = shutil.rmtree
self.dir_ = dir_
def close(self):
self.dir_ = None
def cleanup(self):
if self.dir_:
self.rmtree(self.dir_, True)
src_lock = dest_lock = dir_cleanup = None
try:
if islocal(dest):
dir_cleanup = DirCleanup(dest)
abspath = origsource
copy = False
if src_repo.cancopy() and islocal(dest):
abspath = os.path.abspath(util.drop_scheme('file', origsource))
copy = not pull and not rev
if copy:
try:
# we use a lock here because if we race with commit, we
# can end up with extra data in the cloned revlogs that's
# not pointed to by changesets, thus causing verify to
# fail
src_lock = src_repo.lock(wait=False)
except error.LockError:
copy = False
if copy:
src_repo.hook('preoutgoing', throw=True, source='clone')
hgdir = os.path.realpath(os.path.join(dest, ".hg"))
if not os.path.exists(dest):
os.mkdir(dest)
else:
# only clean up directories we create ourselves
dir_cleanup.dir_ = hgdir
try:
dest_path = hgdir
os.mkdir(dest_path)
except OSError, inst:
if inst.errno == errno.EEXIST:
dir_cleanup.close()
raise util.Abort(_("destination '%s' already exists")
% dest)
raise
for f in src_repo.store.copylist():
src = os.path.join(src_repo.sharedpath, f)
dst = os.path.join(dest_path, f)
dstbase = os.path.dirname(dst)
if dstbase and not os.path.exists(dstbase):
os.mkdir(dstbase)
if os.path.exists(src):
if dst.endswith('data'):
# lock to avoid premature writing to the target
dest_lock = lock.lock(os.path.join(dstbase, "lock"))
util.copyfiles(src, dst)
# we need to re-init the repo after manually copying the data
# into it
dest_repo = repository(ui, dest)
src_repo.hook('outgoing', source='clone', node='0'*40)
else:
try:
dest_repo = repository(ui, dest, create=True)
except OSError, inst:
if inst.errno == errno.EEXIST:
dir_cleanup.close()
raise util.Abort(_("destination '%s' already exists")
% dest)
raise
revs = None
if rev:
if 'lookup' not in src_repo.capabilities:
raise util.Abort(_("src repository does not support "
"revision lookup and so doesn't "
"support clone by revision"))
revs = [src_repo.lookup(r) for r in rev]
checkout = revs[0]
if dest_repo.local():
dest_repo.clone(src_repo, heads=revs, stream=stream)
elif src_repo.local():
src_repo.push(dest_repo, revs=revs)
else:
raise util.Abort(_("clone from remote to remote not supported"))
if dir_cleanup:
dir_cleanup.close()
if dest_repo.local():
fp = dest_repo.opener("hgrc", "w", text=True)
fp.write("[paths]\n")
fp.write("default = %s\n" % abspath)
fp.close()
dest_repo.ui.setconfig('paths', 'default', abspath)
if update:
if update is not True:
checkout = update
if src_repo.local():
checkout = src_repo.lookup(update)
for test in (checkout, 'default', 'tip'):
if test is None:
continue
try:
uprev = dest_repo.lookup(test)
break
except error.RepoLookupError:
continue
bn = dest_repo[uprev].branch()
dest_repo.ui.status(_("updating to branch %s\n")
% encoding.tolocal(bn))
_update(dest_repo, uprev)
return src_repo, dest_repo
finally:
release(src_lock, dest_lock)
if dir_cleanup is not None:
dir_cleanup.cleanup()
def _showstats(repo, stats):
repo.ui.status(_("%d files updated, %d files merged, "
"%d files removed, %d files unresolved\n") % stats)
def update(repo, node):
"""update the working directory to node, merging linear changes"""
stats = _merge.update(repo, node, False, False, None)
_showstats(repo, stats)
if stats[3]:
repo.ui.status(_("use 'hg resolve' to retry unresolved file merges\n"))
return stats[3] > 0
# naming conflict in clone()
_update = update
def clean(repo, node, show_stats=True):
"""forcibly switch the working directory to node, clobbering changes"""
stats = _merge.update(repo, node, False, True, None)
if show_stats:
_showstats(repo, stats)
return stats[3] > 0
def merge(repo, node, force=None, remind=True):
"""branch merge with node, resolving changes"""
stats = _merge.update(repo, node, True, force, False)
_showstats(repo, stats)
if stats[3]:
repo.ui.status(_("use 'hg resolve' to retry unresolved file merges "
"or 'hg update -C' to abandon\n"))
elif remind:
repo.ui.status(_("(branch merge, don't forget to commit)\n"))
return stats[3] > 0
def revert(repo, node, choose):
"""revert changes to revision in node without updating dirstate"""
return _merge.update(repo, node, False, True, choose)[3] > 0
def verify(repo):
"""verify the consistency of a repository"""
return _verify.verify(repo)