# 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 __future__ import absolute_import
import errno
import os
import shutil
from .i18n import _
from .node import nullid
from . import (
bookmarks,
bundlerepo,
cmdutil,
discovery,
error,
exchange,
extensions,
httppeer,
localrepo,
lock,
merge as mergemod,
node,
phases,
repoview,
scmutil,
sshpeer,
statichttprepo,
ui as uimod,
unionrepo,
url,
util,
verify as verifymod,
)
release = lock.release
def _local(path):
path = util.expandpath(util.urllocalpath(path))
return (os.path.isfile(path) and bundlerepo or localrepo)
def addbranchrevs(lrepo, other, branches, revs):
peer = other.peer() # a courtesy to callers using a localrepo for other
hashbranch, branches = branches
if not hashbranch and not branches:
x = revs or None
if util.safehasattr(revs, 'first'):
y = revs.first()
elif revs:
y = revs[0]
else:
y = None
return x, y
if revs:
revs = list(revs)
else:
revs = []
if not peer.capable('branchmap'):
if branches:
raise util.Abort(_("remote branch lookup not supported"))
revs.append(hashbranch)
return revs, revs[0]
branchmap = peer.branchmap()
def primary(branch):
if branch == '.':
if not lrepo:
raise util.Abort(_("dirstate branch not accessible"))
branch = lrepo.dirstate.branch()
if branch in branchmap:
revs.extend(node.hex(r) for r in reversed(branchmap[branch]))
return True
else:
return False
for branch in branches:
if not primary(branch):
raise error.RepoLookupError(_("unknown branch '%s'") % branch)
if hashbranch:
if not primary(hashbranch):
revs.append(hashbranch)
return revs, revs[0]
def parseurl(path, branches=None):
'''parse url#branch, returning (url, (branch, branches))'''
u = util.url(path)
branch = None
if u.fragment:
branch = u.fragment
u.fragment = None
return str(u), (branch, branches or [])
schemes = {
'bundle': bundlerepo,
'union': unionrepo,
'file': _local,
'http': httppeer,
'https': httppeer,
'ssh': sshpeer,
'static-http': statichttprepo,
}
def _peerlookup(path):
u = util.url(path)
scheme = u.scheme or 'file'
thing = schemes.get(scheme) or schemes['file']
try:
return thing(path)
except TypeError:
# we can't test callable(thing) because 'thing' can be an unloaded
# module that implements __call__
if not util.safehasattr(thing, 'instance'):
raise
return thing
def islocal(repo):
'''return true if repo (or path pointing to repo) is local'''
if isinstance(repo, str):
try:
return _peerlookup(repo).islocal(repo)
except AttributeError:
return False
return repo.local()
def openpath(ui, path):
'''open path with open if local, url.open if remote'''
pathurl = util.url(path, parsequery=False, parsefragment=False)
if pathurl.islocal():
return util.posixfile(pathurl.localpath(), 'rb')
else:
return url.open(ui, path)
# a list of (ui, repo) functions called for wire peer initialization
wirepeersetupfuncs = []
def _peerorrepo(ui, path, create=False):
"""return a repository object for the specified path"""
obj = _peerlookup(path).instance(ui, path, create)
ui = getattr(obj, "ui", ui)
for name, module in extensions.extensions(ui):
hook = getattr(module, 'reposetup', None)
if hook:
hook(ui, obj)
if not obj.local():
for f in wirepeersetupfuncs:
f(ui, obj)
return obj
def repository(ui, path='', create=False):
"""return a repository object for the specified path"""
peer = _peerorrepo(ui, path, create)
repo = peer.local()
if not repo:
raise util.Abort(_("repository '%s' is not local") %
(path or peer.url()))
return repo.filtered('visible')
def peer(uiorrepo, opts, path, create=False):
'''return a repository peer for the specified path'''
rui = remoteui(uiorrepo, opts)
return _peerorrepo(rui, path, create).peer()
def defaultdest(source):
'''return default destination of clone if none is given
>>> defaultdest('foo')
'foo'
>>> defaultdest('/foo/bar')
'bar'
>>> defaultdest('/')
''
>>> defaultdest('')
''
>>> defaultdest('http://example.org/')
''
>>> defaultdest('http://example.org/foo/')
'foo'
'''
path = util.url(source).path
if not path:
return ''
return os.path.basename(os.path.normpath(path))
def share(ui, source, dest=None, update=True, bookmarks=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, branches = parseurl(origsource)
srcrepo = repository(ui, source)
rev, checkout = addbranchrevs(srcrepo, srcrepo, branches, None)
else:
srcrepo = source.local()
origsource = source = srcrepo.url()
checkout = None
sharedpath = srcrepo.sharedpath # if our source is already sharing
destwvfs = scmutil.vfs(dest, realpath=True)
destvfs = scmutil.vfs(os.path.join(destwvfs.base, '.hg'), realpath=True)
if destvfs.lexists():
raise util.Abort(_('destination already exists'))
if not destwvfs.isdir():
destwvfs.mkdir()
destvfs.makedir()
requirements = ''
try:
requirements = srcrepo.vfs.read('requires')
except IOError as inst:
if inst.errno != errno.ENOENT:
raise
requirements += 'shared\n'
destvfs.write('requires', requirements)
destvfs.write('sharedpath', sharedpath)
r = repository(ui, destwvfs.base)
default = srcrepo.ui.config('paths', 'default')
if default:
fp = r.vfs("hgrc", "w", text=True)
fp.write("[paths]\n")
fp.write("default = %s\n" % default)
fp.close()
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)
if bookmarks:
fp = r.vfs('shared', 'w')
fp.write('bookmarks\n')
fp.close()
def copystore(ui, srcrepo, destpath):
'''copy files from store of srcrepo in destpath
returns destlock
'''
destlock = None
try:
hardlink = None
num = 0
closetopic = [None]
def prog(topic, pos):
if pos is None:
closetopic[0] = topic
else:
ui.progress(topic, pos + num)
srcpublishing = srcrepo.publishing()
srcvfs = scmutil.vfs(srcrepo.sharedpath)
dstvfs = scmutil.vfs(destpath)
for f in srcrepo.store.copylist():
if srcpublishing and f.endswith('phaseroots'):
continue
dstbase = os.path.dirname(f)
if dstbase and not dstvfs.exists(dstbase):
dstvfs.mkdir(dstbase)
if srcvfs.exists(f):
if f.endswith('data'):
# 'dstbase' may be empty (e.g. revlog format 0)
lockfile = os.path.join(dstbase, "lock")
# lock to avoid premature writing to the target
destlock = lock.lock(dstvfs, lockfile)
hardlink, n = util.copyfiles(srcvfs.join(f), dstvfs.join(f),
hardlink, progress=prog)
num += n
if hardlink:
ui.debug("linked %d files\n" % num)
if closetopic[0]:
ui.progress(closetopic[0], None)
else:
ui.debug("copied %d files\n" % num)
if closetopic[0]:
ui.progress(closetopic[0], None)
return destlock
except: # re-raises
release(destlock)
raise
def clonewithshare(ui, peeropts, sharepath, source, srcpeer, dest, pull=False,
rev=None, update=True, stream=False):
"""Perform a clone using a shared repo.
The store for the repository will be located at <sharepath>/.hg. The
specified revisions will be cloned or pulled from "source". A shared repo
will be created at "dest" and a working copy will be created if "update" is
True.
"""
revs = None
if rev:
if not srcpeer.capable('lookup'):
raise util.Abort(_("src repository does not support "
"revision lookup and so doesn't "
"support clone by revision"))
revs = [srcpeer.lookup(r) for r in rev]
basename = os.path.basename(sharepath)
if os.path.exists(sharepath):
ui.status(_('(sharing from existing pooled repository %s)\n') %
basename)
else:
ui.status(_('(sharing from new pooled repository %s)\n') % basename)
# Always use pull mode because hardlinks in share mode don't work well.
# Never update because working copies aren't necessary in share mode.
clone(ui, peeropts, source, dest=sharepath, pull=True,
rev=rev, update=False, stream=stream)
sharerepo = repository(ui, path=sharepath)
share(ui, sharerepo, dest=dest, update=update, bookmarks=False)
# We need to perform a pull against the dest repo to fetch bookmarks
# and other non-store data that isn't shared by default. In the case of
# non-existing shared repo, this means we pull from the remote twice. This
# is a bit weird. But at the time it was implemented, there wasn't an easy
# way to pull just non-changegroup data.
destrepo = repository(ui, path=dest)
exchange.pull(destrepo, srcpeer, heads=revs)
return srcpeer, peer(ui, peeropts, dest)
def clone(ui, peeropts, source, dest=None, pull=False, rev=None,
update=True, stream=False, branch=None, shareopts=None):
"""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 peers, 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 or if the
server prefers streaming
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)
branch: branches to clone
shareopts: dict of options to control auto sharing behavior. The "pool" key
activates auto sharing mode and defines the directory for stores. The
"mode" key determines how to construct the directory name of the shared
repository. "identity" means the name is derived from the node of the first
changeset in the repository. "remote" means the name is derived from the
remote's path/URL. Defaults to "identity."
"""
if isinstance(source, str):
origsource = ui.expandpath(source)
source, branch = parseurl(origsource, branch)
srcpeer = peer(ui, peeropts, source)
else:
srcpeer = source.peer() # in case we were called with a localrepo
branch = (None, branch or [])
origsource = source = srcpeer.url()
rev, checkout = addbranchrevs(srcpeer, srcpeer, branch, rev)
if dest is None:
dest = defaultdest(source)
if dest:
ui.status(_("destination directory: %s\n") % dest)
else:
dest = ui.expandpath(dest)
dest = util.urllocalpath(dest)
source = util.urllocalpath(source)
if not dest:
raise util.Abort(_("empty destination path is not valid"))
destvfs = scmutil.vfs(dest, expandpath=True)
if destvfs.lexists():
if not destvfs.isdir():
raise util.Abort(_("destination '%s' already exists") % dest)
elif destvfs.listdir():
raise util.Abort(_("destination '%s' is not empty") % dest)
shareopts = shareopts or {}
sharepool = shareopts.get('pool')
sharenamemode = shareopts.get('mode')
if sharepool and islocal(dest):
sharepath = None
if sharenamemode == 'identity':
# Resolve the name from the initial changeset in the remote
# repository. This returns nullid when the remote is empty. It
# raises RepoLookupError if revision 0 is filtered or otherwise
# not available. If we fail to resolve, sharing is not enabled.
try:
rootnode = srcpeer.lookup('0')
if rootnode != node.nullid:
sharepath = os.path.join(sharepool, node.hex(rootnode))
else:
ui.status(_('(not using pooled storage: '
'remote appears to be empty)\n'))
except error.RepoLookupError:
ui.status(_('(not using pooled storage: '
'unable to resolve identity of remote)\n'))
elif sharenamemode == 'remote':
sharepath = os.path.join(sharepool, util.sha1(source).hexdigest())
else:
raise util.Abort('unknown share naming mode: %s' % sharenamemode)
if sharepath:
return clonewithshare(ui, peeropts, sharepath, source, srcpeer,
dest, pull=pull, rev=rev, update=update,
stream=stream)
srclock = destlock = cleandir = None
srcrepo = srcpeer.local()
try:
abspath = origsource
if islocal(origsource):
abspath = os.path.abspath(util.urllocalpath(origsource))
if islocal(dest):
cleandir = dest
copy = False
if (srcrepo and srcrepo.cancopy() and islocal(dest)
and not phases.hassecret(srcrepo)):
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
srclock = srcrepo.lock(wait=False)
except error.LockError:
copy = False
if copy:
srcrepo.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
cleandir = hgdir
try:
destpath = hgdir
util.makedir(destpath, notindexed=True)
except OSError as inst:
if inst.errno == errno.EEXIST:
cleandir = None
raise util.Abort(_("destination '%s' already exists")
% dest)
raise
destlock = copystore(ui, srcrepo, destpath)
# copy bookmarks over
srcbookmarks = srcrepo.join('bookmarks')
dstbookmarks = os.path.join(destpath, 'bookmarks')
if os.path.exists(srcbookmarks):
util.copyfile(srcbookmarks, dstbookmarks)
# Recomputing branch cache might be slow on big repos,
# so just copy it
def copybranchcache(fname):
srcbranchcache = srcrepo.join('cache/%s' % fname)
dstbranchcache = os.path.join(dstcachedir, fname)
if os.path.exists(srcbranchcache):
if not os.path.exists(dstcachedir):
os.mkdir(dstcachedir)
util.copyfile(srcbranchcache, dstbranchcache)
dstcachedir = os.path.join(destpath, 'cache')
# In local clones we're copying all nodes, not just served
# ones. Therefore copy all branch caches over.
copybranchcache('branch2')
for cachename in repoview.filtertable:
copybranchcache('branch2-%s' % cachename)
# we need to re-init the repo after manually copying the data
# into it
destpeer = peer(srcrepo, peeropts, dest)
srcrepo.hook('outgoing', source='clone',
node=node.hex(node.nullid))
else:
try:
destpeer = peer(srcrepo or ui, peeropts, dest, create=True)
# only pass ui when no srcrepo
except OSError as inst:
if inst.errno == errno.EEXIST:
cleandir = None
raise util.Abort(_("destination '%s' already exists")
% dest)
raise
revs = None
if rev:
if not srcpeer.capable('lookup'):
raise util.Abort(_("src repository does not support "
"revision lookup and so doesn't "
"support clone by revision"))
revs = [srcpeer.lookup(r) for r in rev]
checkout = revs[0]
if destpeer.local():
if not stream:
if pull:
stream = False
else:
stream = None
destpeer.local().clone(srcpeer, heads=revs, stream=stream)
elif srcrepo:
exchange.push(srcrepo, destpeer, revs=revs,
bookmarks=srcrepo._bookmarks.keys())
else:
raise util.Abort(_("clone from remote to remote not supported"))
cleandir = None
destrepo = destpeer.local()
if destrepo:
template = uimod.samplehgrcs['cloned']
fp = destrepo.vfs("hgrc", "w", text=True)
u = util.url(abspath)
u.passwd = None
defaulturl = str(u)
fp.write(template % defaulturl)
fp.close()
destrepo.ui.setconfig('paths', 'default', defaulturl, 'clone')
if update:
if update is not True:
checkout = srcpeer.lookup(update)
uprev = None
status = None
if checkout is not None:
try:
uprev = destrepo.lookup(checkout)
except error.RepoLookupError:
try:
uprev = destrepo.lookup(update)
except error.RepoLookupError:
pass
if uprev is None:
try:
uprev = destrepo._bookmarks['@']
update = '@'
bn = destrepo[uprev].branch()
if bn == 'default':
status = _("updating to bookmark @\n")
else:
status = (_("updating to bookmark @ on branch %s\n")
% bn)
except KeyError:
try:
uprev = destrepo.branchtip('default')
except error.RepoLookupError:
uprev = destrepo.lookup('tip')
if not status:
bn = destrepo[uprev].branch()
status = _("updating to branch %s\n") % bn
destrepo.ui.status(status)
_update(destrepo, uprev)
if update in destrepo._bookmarks:
bookmarks.activate(destrepo, update)
finally:
release(srclock, destlock)
if cleandir is not None:
shutil.rmtree(cleandir, True)
if srcpeer is not None:
srcpeer.close()
return srcpeer, destpeer
def _showstats(repo, stats):
repo.ui.status(_("%d files updated, %d files merged, "
"%d files removed, %d files unresolved\n") % stats)
def updaterepo(repo, node, overwrite):
"""Update the working directory to node.
When overwrite is set, changes are clobbered, merged else
returns stats (see pydoc mercurial.merge.applyupdates)"""
return mergemod.update(repo, node, False, overwrite, None,
labels=['working copy', 'destination'])
def update(repo, node):
"""update the working directory to node, merging linear changes"""
stats = updaterepo(repo, node, False)
_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 = updaterepo(repo, node, True)
util.unlinkpath(repo.join('graftstate'), ignoremissing=True)
if show_stats:
_showstats(repo, stats)
return stats[3] > 0
def merge(repo, node, force=None, remind=True):
"""Branch merge with node, resolving changes. Return true if any
unresolved conflicts."""
stats = mergemod.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 _incoming(displaychlist, subreporecurse, ui, repo, source,
opts, buffered=False):
"""
Helper for incoming / gincoming.
displaychlist gets called with
(remoterepo, incomingchangesetlist, displayer) parameters,
and is supposed to contain only code that can't be unified.
"""
source, branches = parseurl(ui.expandpath(source), opts.get('branch'))
other = peer(repo, opts, source)
ui.status(_('comparing with %s\n') % util.hidepassword(source))
revs, checkout = addbranchrevs(repo, other, branches, opts.get('rev'))
if revs:
revs = [other.lookup(rev) for rev in revs]
other, chlist, cleanupfn = bundlerepo.getremotechanges(ui, repo, other,
revs, opts["bundle"], opts["force"])
try:
if not chlist:
ui.status(_("no changes found\n"))
return subreporecurse()
displayer = cmdutil.show_changeset(ui, other, opts, buffered)
displaychlist(other, chlist, displayer)
displayer.close()
finally:
cleanupfn()
subreporecurse()
return 0 # exit code is zero since we found incoming changes
def incoming(ui, repo, source, opts):
def subreporecurse():
ret = 1
if opts.get('subrepos'):
ctx = repo[None]
for subpath in sorted(ctx.substate):
sub = ctx.sub(subpath)
ret = min(ret, sub.incoming(ui, source, opts))
return ret
def display(other, chlist, displayer):
limit = cmdutil.loglimit(opts)
if opts.get('newest_first'):
chlist.reverse()
count = 0
for n in chlist:
if limit is not None and count >= limit:
break
parents = [p for p in other.changelog.parents(n) if p != nullid]
if opts.get('no_merges') and len(parents) == 2:
continue
count += 1
displayer.show(other[n])
return _incoming(display, subreporecurse, ui, repo, source, opts)
def _outgoing(ui, repo, dest, opts):
dest = ui.expandpath(dest or 'default-push', dest or 'default')
dest, branches = parseurl(dest, opts.get('branch'))
ui.status(_('comparing with %s\n') % util.hidepassword(dest))
revs, checkout = addbranchrevs(repo, repo, branches, opts.get('rev'))
if revs:
revs = [repo.lookup(rev) for rev in scmutil.revrange(repo, revs)]
other = peer(repo, opts, dest)
outgoing = discovery.findcommonoutgoing(repo.unfiltered(), other, revs,
force=opts.get('force'))
o = outgoing.missing
if not o:
scmutil.nochangesfound(repo.ui, repo, outgoing.excluded)
return o, other
def outgoing(ui, repo, dest, opts):
def recurse():
ret = 1
if opts.get('subrepos'):
ctx = repo[None]
for subpath in sorted(ctx.substate):
sub = ctx.sub(subpath)
ret = min(ret, sub.outgoing(ui, dest, opts))
return ret
limit = cmdutil.loglimit(opts)
o, other = _outgoing(ui, repo, dest, opts)
if not o:
cmdutil.outgoinghooks(ui, repo, other, opts, o)
return recurse()
if opts.get('newest_first'):
o.reverse()
displayer = cmdutil.show_changeset(ui, repo, opts)
count = 0
for n in o:
if limit is not None and count >= limit:
break
parents = [p for p in repo.changelog.parents(n) if p != nullid]
if opts.get('no_merges') and len(parents) == 2:
continue
count += 1
displayer.show(repo[n])
displayer.close()
cmdutil.outgoinghooks(ui, repo, other, opts, o)
recurse()
return 0 # exit code is zero since we found outgoing changes
def revert(repo, node, choose):
"""revert changes to revision in node without updating dirstate"""
return mergemod.update(repo, node, False, True, choose)[3] > 0
def verify(repo):
"""verify the consistency of a repository"""
ret = verifymod.verify(repo)
# Broken subrepo references in hidden csets don't seem worth worrying about,
# since they can't be pushed/pulled, and --hidden can be used if they are a
# concern.
# pathto() is needed for -R case
revs = repo.revs("filelog(%s)",
util.pathto(repo.root, repo.getcwd(), '.hgsubstate'))
if revs:
repo.ui.status(_('checking subrepo links\n'))
for rev in revs:
ctx = repo[rev]
try:
for subpath in ctx.substate:
ret = ctx.sub(subpath).verify() or ret
except Exception:
repo.ui.warn(_('.hgsubstate is corrupt in revision %s\n') %
node.short(ctx.node()))
return ret
def remoteui(src, opts):
'build a remote ui from ui or repo and opts'
if util.safehasattr(src, 'baseui'): # looks like a repository
dst = src.baseui.copy() # drop repo-specific config
src = src.ui # copy target options from repo
else: # assume it's a global ui object
dst = src.copy() # keep all global options
# copy ssh-specific options
for o in 'ssh', 'remotecmd':
v = opts.get(o) or src.config('ui', o)
if v:
dst.setconfig("ui", o, v, 'copied')
# copy bundle-specific options
r = src.config('bundle', 'mainreporoot')
if r:
dst.setconfig('bundle', 'mainreporoot', r, 'copied')
# copy selected local settings to the remote ui
for sect in ('auth', 'hostfingerprints', 'http_proxy'):
for key, val in src.configitems(sect):
dst.setconfig(sect, key, val, 'copied')
v = src.config('web', 'cacerts')
if v == '!':
dst.setconfig('web', 'cacerts', v, 'copied')
elif v:
dst.setconfig('web', 'cacerts', util.expandpath(v), 'copied')
return dst