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"""
repository class-based interface for hgsubversion
Copyright (C) 2009, Dan Villiom Podlaski Christiansen <danchr@gmail.com>
See parent package for licensing.
Internally, Mercurial assumes that every single repository is a localrepository
subclass: pull() is called on the instance pull *to*, but not the one pulled
*from*. To work around this, we create two classes:
- svnremoterepo for Subversion repositories, but it doesn't really do anything.
- svnlocalrepo for local repositories which handles both operations on itself --
the local, hgsubversion-enabled clone -- and the remote repository. Decorators
are used to distinguish and filter these operations from others.
"""
import errno
from mercurial import error
from mercurial import util as hgutil
from mercurial import httprepo
import mercurial.repo
import util
import wrappers
import svnwrap
import svnmeta
propertycache = hgutil.propertycache
class ctxctx(object):
"""Proxies a ctx object and ensures files is never empty."""
def __init__(self, ctx):
self._ctx = ctx
def files(self):
return self._ctx.files() or ['.svn']
def filectx(self, path, filelog=None):
if path == '.svn':
raise IOError(errno.ENOENT, '.svn is a fake file')
return self._ctx.filectx(path, filelog=filelog)
def __getattr__(self, name):
return getattr(self._ctx, name)
def __getitem__(self, key):
return self._ctx[key]
def generate_repo_class(ui, repo):
""" This function generates the local repository wrapper. """
superclass = repo.__class__
def remotesvn(fn):
"""
Filter for instance methods which require the first argument
to be a remote Subversion repository instance.
"""
original = getattr(repo, fn.__name__, None)
# remove when dropping support for hg < 1.6.
if original is None and fn.__name__ == 'findoutgoing':
return
def wrapper(self, *args, **opts):
capable = getattr(args[0], 'capable', lambda x: False)
if capable('subversion'):
return fn(self, *args, **opts)
else:
return original(*args, **opts)
wrapper.__name__ = fn.__name__ + '_wrapper'
wrapper.__doc__ = fn.__doc__
return wrapper
class svnlocalrepo(superclass):
def svn_commitctx(self, ctx):
"""Commits a ctx, but defeats manifest recycling introduced in hg 1.9."""
return self.commitctx(ctxctx(ctx))
# TODO use newbranch to allow branch creation in Subversion?
@remotesvn
def push(self, remote, force=False, revs=None, newbranch=None):
return wrappers.push(self, remote, force, revs)
@remotesvn
def pull(self, remote, heads=[], force=False):
return wrappers.pull(self, remote, heads, force)
@remotesvn
def findoutgoing(self, remote, base=None, heads=None, force=False):
return wrappers.findoutgoing(repo, remote, heads, force)
def svnmeta(self, uuid=None, subdir=None):
return svnmeta.SVNMeta(self, uuid, subdir)
repo.__class__ = svnlocalrepo
class svnremoterepo(mercurial.repo.repository):
""" the dumb wrapper for actual Subversion repositories """
def __init__(self, ui, path=None):
self.ui = ui
if path is None:
path = self.ui.config('paths', 'default')
if not path:
raise hgutil.Abort('no Subversion URL specified')
self.path = path
self.capabilities = set(['lookup', 'subversion'])
@propertycache
def svnauth(self):
# DO NOT default the user to hg's getuser(). If you provide
# *any* default username to Subversion, it won't use any remembered
# username for the desired realm, breaking OS X Keychain support,
# GNOME keyring support, and all similar tools.
user = self.ui.config('hgsubversion', 'username')
passwd = self.ui.config('hgsubversion', 'password')
url = util.normalize_url(self.path)
user, passwd, url = svnwrap.parse_url(url, user, passwd)
return url, user, passwd
@property
def svnurl(self):
return self.svn.svn_url
@propertycache
def svn(self):
try:
return svnwrap.SubversionRepo(*self.svnauth)
except svnwrap.SubversionConnectionException, e:
self.ui.traceback()
raise hgutil.Abort(e)
def url(self):
return self.path
def lookup(self, key):
return key
def cancopy(self):
return False
def heads(self, *args, **opts):
"""
Whenever this function is hit, we abort. The traceback is useful for
figuring out where to intercept the functionality.
"""
raise hgutil.Abort('command unavailable for Subversion repositories')
def pushkey(self, namespace, key, old, new):
return False
def listkeys(self, namespace):
return {}
def instance(ui, url, create):
if url.startswith('http://') or url.startswith('https://'):
try:
# may yield a bogus 'real URL...' message
return httprepo.instance(ui, url, create)
except error.RepoError:
ui.traceback()
ui.note('(falling back to Subversion support)\n')
if create:
raise hgutil.Abort('cannot create new remote Subversion repository')
return svnremoterepo(ui, url)
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