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https://github.com/facebook/sapling.git
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d69cd3912f
When cloning with the -r option or # url format from a tag the destination repo most likely won't have the tag. We can save the lookup result to get to the correct parent anyway. Similar to issue1306, but for tags.
300 lines
9.8 KiB
Python
300 lines
9.8 KiB
Python
# hg.py - repository classes for mercurial
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.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, incorporated herein by reference.
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from i18n import _
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from lock import release
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import localrepo, bundlerepo, httprepo, sshrepo, statichttprepo
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import lock, util, extensions, error
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import merge as _merge
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import verify as _verify
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import errno, os, shutil
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def _local(path):
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return (os.path.isfile(util.drop_scheme('file', path)) and
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bundlerepo or localrepo)
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def parseurl(url, revs=[]):
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'''parse url#branch, returning url, branch + revs'''
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if '#' not in url:
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return url, (revs or None), revs and revs[-1] or None
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url, branch = url.split('#', 1)
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checkout = revs and revs[-1] or branch
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return url, (revs or []) + [branch], checkout
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schemes = {
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'bundle': bundlerepo,
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'file': _local,
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'http': httprepo,
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'https': httprepo,
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'ssh': sshrepo,
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'static-http': statichttprepo,
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}
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def _lookup(path):
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scheme = 'file'
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if path:
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c = path.find(':')
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if c > 0:
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scheme = path[:c]
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thing = schemes.get(scheme) or schemes['file']
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try:
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return thing(path)
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except TypeError:
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return thing
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def islocal(repo):
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'''return true if repo or path is local'''
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if isinstance(repo, str):
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try:
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return _lookup(repo).islocal(repo)
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except AttributeError:
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return False
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return repo.local()
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def repository(ui, path='', create=False):
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"""return a repository object for the specified path"""
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repo = _lookup(path).instance(ui, path, create)
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ui = getattr(repo, "ui", ui)
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for name, module in extensions.extensions():
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hook = getattr(module, 'reposetup', None)
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if hook:
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hook(ui, repo)
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return repo
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def defaultdest(source):
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'''return default destination of clone if none is given'''
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return os.path.basename(os.path.normpath(source))
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def localpath(path):
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if path.startswith('file://localhost/'):
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return path[16:]
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if path.startswith('file://'):
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return path[7:]
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if path.startswith('file:'):
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return path[5:]
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return path
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def clone(ui, source, dest=None, pull=False, rev=None, update=True,
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stream=False):
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"""Make a copy of an existing repository.
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Create a copy of an existing repository in a new directory. The
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source and destination are URLs, as passed to the repository
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function. Returns a pair of repository objects, the source and
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newly created destination.
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The location of the source is added to the new repository's
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.hg/hgrc file, as the default to be used for future pulls and
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pushes.
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If an exception is raised, the partly cloned/updated destination
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repository will be deleted.
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Arguments:
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source: repository object or URL
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dest: URL of destination repository to create (defaults to base
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name of source repository)
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pull: always pull from source repository, even in local case
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stream: stream raw data uncompressed from repository (fast over
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LAN, slow over WAN)
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rev: revision to clone up to (implies pull=True)
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update: update working directory after clone completes, if
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destination is local repository (True means update to default rev,
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anything else is treated as a revision)
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"""
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if isinstance(source, str):
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origsource = ui.expandpath(source)
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source, rev, checkout = parseurl(origsource, rev)
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src_repo = repository(ui, source)
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else:
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src_repo = source
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origsource = source = src_repo.url()
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checkout = rev and rev[-1] or None
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if dest is None:
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dest = defaultdest(source)
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ui.status(_("destination directory: %s\n") % dest)
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dest = localpath(dest)
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source = localpath(source)
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if os.path.exists(dest):
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if not os.path.isdir(dest):
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raise util.Abort(_("destination '%s' already exists") % dest)
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elif os.listdir(dest):
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raise util.Abort(_("destination '%s' is not empty") % dest)
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class DirCleanup(object):
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def __init__(self, dir_):
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self.rmtree = shutil.rmtree
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self.dir_ = dir_
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def close(self):
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self.dir_ = None
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def cleanup(self):
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if self.dir_:
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self.rmtree(self.dir_, True)
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src_lock = dest_lock = dir_cleanup = None
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try:
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if islocal(dest):
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dir_cleanup = DirCleanup(dest)
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abspath = origsource
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copy = False
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if src_repo.cancopy() and islocal(dest):
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abspath = os.path.abspath(util.drop_scheme('file', origsource))
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copy = not pull and not rev
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if copy:
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try:
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# we use a lock here because if we race with commit, we
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# can end up with extra data in the cloned revlogs that's
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# not pointed to by changesets, thus causing verify to
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# fail
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src_lock = src_repo.lock()
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except error.LockError:
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copy = False
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if copy:
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hgdir = os.path.realpath(os.path.join(dest, ".hg"))
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if not os.path.exists(dest):
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os.mkdir(dest)
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else:
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# only clean up directories we create ourselves
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dir_cleanup.dir_ = hgdir
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try:
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dest_path = hgdir
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os.mkdir(dest_path)
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except OSError, inst:
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if inst.errno == errno.EEXIST:
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dir_cleanup.close()
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raise util.Abort(_("destination '%s' already exists")
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% dest)
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raise
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for f in src_repo.store.copylist():
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src = os.path.join(src_repo.path, f)
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dst = os.path.join(dest_path, f)
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dstbase = os.path.dirname(dst)
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if dstbase and not os.path.exists(dstbase):
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os.mkdir(dstbase)
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if os.path.exists(src):
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if dst.endswith('data'):
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# lock to avoid premature writing to the target
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dest_lock = lock.lock(os.path.join(dstbase, "lock"))
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util.copyfiles(src, dst)
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# we need to re-init the repo after manually copying the data
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# into it
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dest_repo = repository(ui, dest)
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else:
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try:
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dest_repo = repository(ui, dest, create=True)
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except OSError, inst:
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if inst.errno == errno.EEXIST:
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dir_cleanup.close()
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raise util.Abort(_("destination '%s' already exists")
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% dest)
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raise
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revs = None
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if rev:
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if 'lookup' not in src_repo.capabilities:
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raise util.Abort(_("src repository does not support revision "
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"lookup and so doesn't support clone by "
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"revision"))
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revs = [src_repo.lookup(r) for r in rev]
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checkout = revs[0]
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if dest_repo.local():
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dest_repo.clone(src_repo, heads=revs, stream=stream)
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elif src_repo.local():
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src_repo.push(dest_repo, revs=revs)
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else:
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raise util.Abort(_("clone from remote to remote not supported"))
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if dir_cleanup:
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dir_cleanup.close()
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if dest_repo.local():
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fp = dest_repo.opener("hgrc", "w", text=True)
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fp.write("[paths]\n")
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fp.write("default = %s\n" % abspath)
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fp.close()
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if update:
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dest_repo.ui.status(_("updating working directory\n"))
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if update is not True:
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checkout = update
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for test in (checkout, 'default', 'tip'):
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try:
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uprev = dest_repo.lookup(test)
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break
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except:
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continue
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_update(dest_repo, uprev)
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return src_repo, dest_repo
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finally:
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release(src_lock, dest_lock)
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if dir_cleanup is not None:
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dir_cleanup.cleanup()
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def _showstats(repo, stats):
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stats = ((stats[0], _("updated")),
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(stats[1], _("merged")),
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(stats[2], _("removed")),
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(stats[3], _("unresolved")))
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note = ", ".join([_("%d files %s") % s for s in stats])
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repo.ui.status("%s\n" % note)
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def update(repo, node):
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"""update the working directory to node, merging linear changes"""
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stats = _merge.update(repo, node, False, False, None)
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_showstats(repo, stats)
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if stats[3]:
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repo.ui.status(_("use 'hg resolve' to retry unresolved file merges\n"))
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return stats[3] > 0
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# naming conflict in clone()
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_update = update
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def clean(repo, node, show_stats=True):
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"""forcibly switch the working directory to node, clobbering changes"""
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stats = _merge.update(repo, node, False, True, None)
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if show_stats: _showstats(repo, stats)
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return stats[3] > 0
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def merge(repo, node, force=None, remind=True):
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"""branch merge with node, resolving changes"""
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stats = _merge.update(repo, node, True, force, False)
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_showstats(repo, stats)
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if stats[3]:
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repo.ui.status(_("use 'hg resolve' to retry unresolved file merges "
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"or 'hg up --clean' to abandon\n"))
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elif remind:
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repo.ui.status(_("(branch merge, don't forget to commit)\n"))
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return stats[3] > 0
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def revert(repo, node, choose):
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"""revert changes to revision in node without updating dirstate"""
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return _merge.update(repo, node, False, True, choose)[3] > 0
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def verify(repo):
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"""verify the consistency of a repository"""
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return _verify.verify(repo)
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