localrepository.status: only acquire wlock if actually needed.
This speeds up the common case of not needing to update the dirstate,
and avoids the need to reload and parse the dirstate "just in case".
# hg.py - repository classes for mercurial
#
# Copyright 2005, 2006 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, incorporated herein by reference.
from node import *
from repo import *
from i18n import _
import localrepo, bundlerepo, httprepo, sshrepo, statichttprepo
import errno, lock, os, shutil, util
import merge as _merge
import verify as _verify
def _local(path):
return (os.path.isfile(util.drop_scheme('file', path)) and
bundlerepo or localrepo)
schemes = {
'bundle': bundlerepo,
'file': _local,
'hg': httprepo,
'http': httprepo,
'https': httprepo,
'old-http': statichttprepo,
'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()
repo_setup_hooks = []
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 hook in repo_setup_hooks:
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 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
"""
if isinstance(source, str):
src_repo = repository(ui, source)
else:
src_repo = source
source = src_repo.url()
if dest is None:
dest = defaultdest(source)
ui.status(_("destination directory: %s\n") % dest)
def localpath(path):
if path.startswith('file://'):
return path[7:]
if path.startswith('file:'):
return path[5:]
return path
dest = localpath(dest)
source = localpath(source)
if os.path.exists(dest):
raise util.Abort(_("destination '%s' already exists") % dest)
class DirCleanup(object):
def __init__(self, dir_):
self.rmtree = shutil.rmtree
self.dir_ = dir_
def close(self):
self.dir_ = None
def __del__(self):
if self.dir_:
self.rmtree(self.dir_, True)
dir_cleanup = None
if islocal(dest):
dir_cleanup = DirCleanup(dest)
abspath = source
copy = False
if src_repo.local() and islocal(dest):
abspath = os.path.abspath(source)
copy = not pull and not rev
src_lock, dest_lock = None, None
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()
except lock.LockException:
copy = False
if copy:
def force_copy(src, dst):
try:
util.copyfiles(src, dst)
except OSError, inst:
if inst.errno != errno.ENOENT:
raise
src_store = os.path.realpath(src_repo.spath)
if not os.path.exists(dest):
os.mkdir(dest)
dest_path = os.path.realpath(os.path.join(dest, ".hg"))
os.mkdir(dest_path)
if src_repo.spath != src_repo.path:
dest_store = os.path.join(dest_path, "store")
os.mkdir(dest_store)
else:
dest_store = dest_path
# copy the requires file
force_copy(src_repo.join("requires"),
os.path.join(dest_path, "requires"))
# we lock here to avoid premature writing to the target
dest_lock = lock.lock(os.path.join(dest_store, "lock"))
files = ("data",
"00manifest.d", "00manifest.i",
"00changelog.d", "00changelog.i")
for f in files:
src = os.path.join(src_store, f)
dst = os.path.join(dest_store, f)
force_copy(src, dst)
# we need to re-init the repo after manually copying the data
# into it
dest_repo = repository(ui, dest)
else:
dest_repo = repository(ui, dest, create=True)
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]
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 src_lock:
src_lock.release()
if dest_repo.local():
fp = dest_repo.opener("hgrc", "w", text=True)
fp.write("[paths]\n")
fp.write("default = %s\n" % abspath)
fp.close()
if dest_lock:
dest_lock.release()
if update:
_update(dest_repo, dest_repo.changelog.tip())
if dir_cleanup:
dir_cleanup.close()
return src_repo, dest_repo
def _showstats(repo, stats):
stats = ((stats[0], _("updated")),
(stats[1], _("merged")),
(stats[2], _("removed")),
(stats[3], _("unresolved")))
note = ", ".join([_("%d files %s") % s for s in stats])
repo.ui.status("%s\n" % note)
def _update(repo, node): return update(repo, node)
def update(repo, node):
"""update the working directory to node, merging linear changes"""
pl = repo.parents()
stats = _merge.update(repo, node, False, False, None, None)
_showstats(repo, stats)
if stats[3]:
repo.ui.status(_("There are unresolved merges with"
" locally modified files.\n"))
if stats[1]:
repo.ui.status(_("You can finish the partial merge using:\n"))
else:
repo.ui.status(_("You can redo the full merge using:\n"))
# len(pl)==1, otherwise _merge.update() would have raised util.Abort:
repo.ui.status(_(" hg update %s\n hg update %s\n")
% (pl[0].rev(), repo.changectx(node).rev()))
return stats[3]
def clean(repo, node, wlock=None, show_stats=True):
"""forcibly switch the working directory to node, clobbering changes"""
stats = _merge.update(repo, node, False, True, None, wlock)
if show_stats: _showstats(repo, stats)
return stats[3]
def merge(repo, node, force=None, remind=True, wlock=None):
"""branch merge with node, resolving changes"""
stats = _merge.update(repo, node, True, force, False, wlock)
_showstats(repo, stats)
if stats[3]:
pl = repo.parents()
repo.ui.status(_("There are unresolved merges,"
" you can redo the full merge using:\n"
" hg update -C %s\n"
" hg merge %s\n")
% (pl[0].rev(), pl[1].rev()))
elif remind:
repo.ui.status(_("(branch merge, don't forget to commit)\n"))
return stats[3]
def revert(repo, node, choose, wlock):
"""revert changes to revision in node without updating dirstate"""
return _merge.update(repo, node, False, True, choose, wlock)[3]
def verify(repo):
"""verify the consistency of a repository"""
return _verify.verify(repo)