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# 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
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# of the GNU General Public License, 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 errno, lock, os, shutil, util, extensions, error
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import merge as _merge
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import verify as _verify
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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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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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