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# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
#
# This module is part of PureGitDB and is released under
# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
from base import (
PureCompoundDB,
PureObjectDBW,
PureRootPathDB,
PureRepositoryPathsMixin,
PureConfigurationMixin,
)
from resolve import PureReferencesMixin
from loose import PureLooseObjectODB
from pack import PurePackedODB
from ref import PureReferenceDB
from gitdb.util import (
LazyMixin,
normpath,
join,
dirname
)
from gitdb.exc import (
InvalidDBRoot,
BadObject,
AmbiguousObjectName
)
import os
__all__ = ('PureGitODB', 'PureGitDB')
class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB):
"""A git-style object-only database, which contains all objects in the 'objects'
subdirectory.
:note: The type needs to be initialized on the ./objects directory to function,
as it deals solely with object lookup. Use a PureGitDB type if you need
reference and push support."""
# Configuration
PackDBCls = PurePackedODB
LooseDBCls = PureLooseObjectODB
PureReferenceDBCls = PureReferenceDB
# Directories
packs_dir = 'pack'
loose_dir = ''
alternates_dir = os.path.join('info', 'alternates')
def __init__(self, root_path):
"""Initialize ourselves on a git ./objects directory"""
super(PureGitODB, self).__init__(root_path)
def _set_cache_(self, attr):
if attr == '_dbs' or attr == '_loose_db':
self._dbs = list()
loose_db = None
for subpath, dbcls in ((self.packs_dir, self.PackDBCls),
(self.loose_dir, self.LooseDBCls),
(self.alternates_dir, self.PureReferenceDBCls)):
path = self.db_path(subpath)
if os.path.exists(path):
self._dbs.append(dbcls(path))
if dbcls is self.LooseDBCls:
loose_db = self._dbs[-1]
# END remember loose db
# END check path exists
# END for each db type
# should have at least one subdb
if not self._dbs:
raise InvalidDBRoot(self.root_path())
# END handle error
# we the first one should have the store method
assert loose_db is not None and hasattr(loose_db, 'store'), "First database needs store functionality"
# finally set the value
self._loose_db = loose_db
else:
super(PureGitODB, self)._set_cache_(attr)
# END handle attrs
#{ PureObjectDBW interface
def store(self, istream):
return self._loose_db.store(istream)
def ostream(self):
return self._loose_db.ostream()
def set_ostream(self, ostream):
return self._loose_db.set_ostream(ostream)
#} END objectdbw interface
class PureGitDB(PureGitODB, PureRepositoryPathsMixin, PureConfigurationMixin, PureReferencesMixin):
"""Git like database with support for object lookup as well as reference resolution.
Our rootpath is set to the actual .git directory (bare on unbare).
The root_path will be the git objects directory. Use git_path() to obtain the actual top-level
git directory."""
#directories
def __init__(self, root_path):
"""Initialize ourselves on the .git directory, or the .git/objects directory."""
PureRepositoryPathsMixin._initialize(self, root_path)
super(PureGitDB, self).__init__(self.objects_path())
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