/brz/remove-bazaar : contents of bzrlib/repofmt/weaverepo.py at revision 2738.2.6

: (revision 2738.2.6)

To get this branch, use:

bzr branch
http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

# Copyright (C) 2005, 2006, 2007 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


"""Old weave-based repository formats"""

from StringIO import StringIO

from bzrlib import (
    bzrdir,
    lockable_files,
    lockdir,
    weave,
    weavefile,
    xml5,
    )
from bzrlib.decorators import needs_read_lock, needs_write_lock
from bzrlib.repository import (
    MetaDirRepository,
    MetaDirRepositoryFormat,
    Repository,
    RepositoryFormat,
    )
from bzrlib.store.text import TextStore
from bzrlib.trace import mutter


class AllInOneRepository(Repository):
    """Legacy support - the repository behaviour for all-in-one branches."""

    _serializer = xml5.serializer_v5

    def __init__(self, _format, a_bzrdir, _revision_store, control_store, text_store):
        # we reuse one control files instance.
        dir_mode = a_bzrdir._control_files._dir_mode
        file_mode = a_bzrdir._control_files._file_mode

        def get_store(name, compressed=True, prefixed=False):
            # FIXME: This approach of assuming stores are all entirely compressed
            # or entirely uncompressed is tidy, but breaks upgrade from 
            # some existing branches where there's a mixture; we probably 
            # still want the option to look for both.
            relpath = a_bzrdir._control_files._escape(name)
            store = TextStore(a_bzrdir._control_files._transport.clone(relpath),
                              prefixed=prefixed, compressed=compressed,
                              dir_mode=dir_mode,
                              file_mode=file_mode)
            return store

        # not broken out yet because the controlweaves|inventory_store
        # and text_store | weave_store bits are still different.
        if isinstance(_format, RepositoryFormat4):
            # cannot remove these - there is still no consistent api 
            # which allows access to this old info.
            self.inventory_store = get_store('inventory-store')
            text_store = get_store('text-store')
        super(AllInOneRepository, self).__init__(_format, a_bzrdir, a_bzrdir._control_files, _revision_store, control_store, text_store)

    def get_commit_builder(self, branch, parents, config, timestamp=None,
                           timezone=None, committer=None, revprops=None,
                           revision_id=None):
        self._check_ascii_revisionid(revision_id, self.get_commit_builder)
        return Repository.get_commit_builder(self, branch, parents, config,
            timestamp, timezone, committer, revprops, revision_id)

    @needs_read_lock
    def is_shared(self):
        """AllInOne repositories cannot be shared."""
        return False

    @needs_write_lock
    def set_make_working_trees(self, new_value):
        """Set the policy flag for making working trees when creating branches.

        This only applies to branches that use this repository.

        The default is 'True'.
        :param new_value: True to restore the default, False to disable making
                          working trees.
        """
        raise NotImplementedError(self.set_make_working_trees)
    
    def make_working_trees(self):
        """Returns the policy for making working trees on new branches."""
        return True


class WeaveMetaDirRepository(MetaDirRepository):
    """A subclass of MetaDirRepository to set weave specific policy."""

    _serializer = xml5.serializer_v5

    def get_commit_builder(self, branch, parents, config, timestamp=None,
                           timezone=None, committer=None, revprops=None,
                           revision_id=None):
        self._check_ascii_revisionid(revision_id, self.get_commit_builder)
        return MetaDirRepository.get_commit_builder(self, branch, parents,
            config, timestamp, timezone, committer, revprops, revision_id)


class PreSplitOutRepositoryFormat(RepositoryFormat):
    """Base class for the pre split out repository formats."""

    rich_root_data = False
    supports_tree_reference = False

    def initialize(self, a_bzrdir, shared=False, _internal=False):
        """Create a weave repository.
        
        TODO: when creating split out bzr branch formats, move this to a common
        base for Format5, Format6. or something like that.
        """
        if shared:
            raise errors.IncompatibleFormat(self, a_bzrdir._format)

        if not _internal:
            # always initialized when the bzrdir is.
            return self.open(a_bzrdir, _found=True)
        
        # Create an empty weave
        sio = StringIO()
        weavefile.write_weave_v5(weave.Weave(), sio)
        empty_weave = sio.getvalue()

        mutter('creating repository in %s.', a_bzrdir.transport.base)
        dirs = ['revision-store', 'weaves']
        files = [('inventory.weave', StringIO(empty_weave)),
                 ]
        
        # FIXME: RBC 20060125 don't peek under the covers
        # NB: no need to escape relative paths that are url safe.
        control_files = lockable_files.LockableFiles(a_bzrdir.transport,
                                'branch-lock', lockable_files.TransportLock)
        control_files.create_lock()
        control_files.lock_write()
        control_files._transport.mkdir_multi(dirs,
                mode=control_files._dir_mode)
        try:
            for file, content in files:
                control_files.put(file, content)
        finally:
            control_files.unlock()
        return self.open(a_bzrdir, _found=True)

    def _get_control_store(self, repo_transport, control_files):
        """Return the control store for this repository."""
        return self._get_versioned_file_store('',
                                              repo_transport,
                                              control_files,
                                              prefixed=False)

    def _get_text_store(self, transport, control_files):
        """Get a store for file texts for this format."""
        raise NotImplementedError(self._get_text_store)

    def open(self, a_bzrdir, _found=False):
        """See RepositoryFormat.open()."""
        if not _found:
            # we are being called directly and must probe.
            raise NotImplementedError

        repo_transport = a_bzrdir.get_repository_transport(None)
        control_files = a_bzrdir._control_files
        text_store = self._get_text_store(repo_transport, control_files)
        control_store = self._get_control_store(repo_transport, control_files)
        _revision_store = self._get_revision_store(repo_transport, control_files)
        return AllInOneRepository(_format=self,
                                  a_bzrdir=a_bzrdir,
                                  _revision_store=_revision_store,
                                  control_store=control_store,
                                  text_store=text_store)

    def check_conversion_target(self, target_format):
        pass


class RepositoryFormat4(PreSplitOutRepositoryFormat):
    """Bzr repository format 4.

    This repository format has:
     - flat stores
     - TextStores for texts, inventories,revisions.

    This format is deprecated: it indexes texts using a text id which is
    removed in format 5; initialization and write support for this format
    has been removed.
    """

    _matchingbzrdir = bzrdir.BzrDirFormat4()

    def __init__(self):
        super(RepositoryFormat4, self).__init__()

    def get_format_description(self):
        """See RepositoryFormat.get_format_description()."""
        return "Repository format 4"

    def initialize(self, url, shared=False, _internal=False):
        """Format 4 branches cannot be created."""
        raise errors.UninitializableFormat(self)

    def is_supported(self):
        """Format 4 is not supported.

        It is not supported because the model changed from 4 to 5 and the
        conversion logic is expensive - so doing it on the fly was not 
        feasible.
        """
        return False

    def _get_control_store(self, repo_transport, control_files):
        """Format 4 repositories have no formal control store at this point.
        
        This will cause any control-file-needing apis to fail - this is desired.
        """
        return None
    
    def _get_revision_store(self, repo_transport, control_files):
        """See RepositoryFormat._get_revision_store()."""
        from bzrlib.xml4 import serializer_v4
        return self._get_text_rev_store(repo_transport,
                                        control_files,
                                        'revision-store',
                                        serializer=serializer_v4)

    def _get_text_store(self, transport, control_files):
        """See RepositoryFormat._get_text_store()."""


class RepositoryFormat5(PreSplitOutRepositoryFormat):
    """Bzr control format 5.

    This repository format has:
     - weaves for file texts and inventory
     - flat stores
     - TextStores for revisions and signatures.
    """

    _versionedfile_class = weave.WeaveFile
    _matchingbzrdir = bzrdir.BzrDirFormat5()

    def __init__(self):
        super(RepositoryFormat5, self).__init__()

    def get_format_description(self):
        """See RepositoryFormat.get_format_description()."""
        return "Weave repository format 5"

    def _get_revision_store(self, repo_transport, control_files):
        """See RepositoryFormat._get_revision_store()."""
        """Return the revision store object for this a_bzrdir."""
        return self._get_text_rev_store(repo_transport,
                                        control_files,
                                        'revision-store',
                                        compressed=False)

    def _get_text_store(self, transport, control_files):
        """See RepositoryFormat._get_text_store()."""
        return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)


class RepositoryFormat6(PreSplitOutRepositoryFormat):
    """Bzr control format 6.

    This repository format has:
     - weaves for file texts and inventory
     - hash subdirectory based stores.
     - TextStores for revisions and signatures.
    """

    _versionedfile_class = weave.WeaveFile
    _matchingbzrdir = bzrdir.BzrDirFormat6()

    def __init__(self):
        super(RepositoryFormat6, self).__init__()

    def get_format_description(self):
        """See RepositoryFormat.get_format_description()."""
        return "Weave repository format 6"

    def _get_revision_store(self, repo_transport, control_files):
        """See RepositoryFormat._get_revision_store()."""
        return self._get_text_rev_store(repo_transport,
                                        control_files,
                                        'revision-store',
                                        compressed=False,
                                        prefixed=True)

    def _get_text_store(self, transport, control_files):
        """See RepositoryFormat._get_text_store()."""
        return self._get_versioned_file_store('weaves', transport, control_files)


class RepositoryFormat7(MetaDirRepositoryFormat):
    """Bzr repository 7.

    This repository format has:
     - weaves for file texts and inventory
     - hash subdirectory based stores.
     - TextStores for revisions and signatures.
     - a format marker of its own
     - an optional 'shared-storage' flag
     - an optional 'no-working-trees' flag
    """

    _versionedfile_class = weave.WeaveFile

    def _get_control_store(self, repo_transport, control_files):
        """Return the control store for this repository."""
        return self._get_versioned_file_store('',
                                              repo_transport,
                                              control_files,
                                              prefixed=False)

    def get_format_string(self):
        """See RepositoryFormat.get_format_string()."""
        return "Bazaar-NG Repository format 7"

    def get_format_description(self):
        """See RepositoryFormat.get_format_description()."""
        return "Weave repository format 7"

    def check_conversion_target(self, target_format):
        pass

    def _get_revision_store(self, repo_transport, control_files):
        """See RepositoryFormat._get_revision_store()."""
        return self._get_text_rev_store(repo_transport,
                                        control_files,
                                        'revision-store',
                                        compressed=False,
                                        prefixed=True,
                                        )

    def _get_text_store(self, transport, control_files):
        """See RepositoryFormat._get_text_store()."""
        return self._get_versioned_file_store('weaves',
                                              transport,
                                              control_files)

    def initialize(self, a_bzrdir, shared=False):
        """Create a weave repository.

        :param shared: If true the repository will be initialized as a shared
                       repository.
        """
        # Create an empty weave
        sio = StringIO()
        weavefile.write_weave_v5(weave.Weave(), sio)
        empty_weave = sio.getvalue()

        mutter('creating repository in %s.', a_bzrdir.transport.base)
        dirs = ['revision-store', 'weaves']
        files = [('inventory.weave', StringIO(empty_weave)), 
                 ]
        utf8_files = [('format', self.get_format_string())]
 
        self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
        return self.open(a_bzrdir=a_bzrdir, _found=True)

    def open(self, a_bzrdir, _found=False, _override_transport=None):
        """See RepositoryFormat.open().
        
        :param _override_transport: INTERNAL USE ONLY. Allows opening the
                                    repository at a slightly different url
                                    than normal. I.e. during 'upgrade'.
        """
        if not _found:
            format = RepositoryFormat.find_format(a_bzrdir)
            assert format.__class__ ==  self.__class__
        if _override_transport is not None:
            repo_transport = _override_transport
        else:
            repo_transport = a_bzrdir.get_repository_transport(None)
        control_files = lockable_files.LockableFiles(repo_transport,
                                'lock', lockdir.LockDir)
        text_store = self._get_text_store(repo_transport, control_files)
        control_store = self._get_control_store(repo_transport, control_files)
        _revision_store = self._get_revision_store(repo_transport, control_files)
        return WeaveMetaDirRepository(_format=self,
            a_bzrdir=a_bzrdir,
            control_files=control_files,
            _revision_store=_revision_store,
            control_store=control_store,
            text_store=text_store)


_legacy_formats = [RepositoryFormat4(),
                   RepositoryFormat5(),
                   RepositoryFormat6()]

2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	1	# Copyright (C) 2005, 2006, 2007 Canonical Ltd
	2	#
	3	# This program is free software; you can redistribute it and/or modify
	4	# it under the terms of the GNU General Public License as published by
	5	# the Free Software Foundation; either version 2 of the License, or
	6	# (at your option) any later version.
	7	#
	8	# This program is distributed in the hope that it will be useful,
	9	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	# GNU General Public License for more details.
	12	#
	13	# You should have received a copy of the GNU General Public License
	14	# along with this program; if not, write to the Free Software
	15	# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	16
	17
2241.1.15 by Martin Pool doc	18	"""Old weave-based repository formats"""
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	19
	20	from StringIO import StringIO
	21
	22	from bzrlib import (
	23	bzrdir,
	24	lockable_files,
	25	lockdir,
	26	weave,
	27	weavefile,
2241.1.8 by Martin Pool Set the repository's serializer in the places it's needed, not in the base class	28	xml5,
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	29	)
	30	from bzrlib.decorators import needs_read_lock, needs_write_lock
	31	from bzrlib.repository import (
	32	MetaDirRepository,
	33	MetaDirRepositoryFormat,
	34	Repository,
	35	RepositoryFormat,
	36	)
	37	from bzrlib.store.text import TextStore
	38	from bzrlib.trace import mutter
	39
	40
	41	class AllInOneRepository(Repository):
	42	"""Legacy support - the repository behaviour for all-in-one branches."""
	43
2241.1.8 by Martin Pool Set the repository's serializer in the places it's needed, not in the base class	44	_serializer = xml5.serializer_v5
	45
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	46	def __init__(self, _format, a_bzrdir, _revision_store, control_store, text_store):
	47	# we reuse one control files instance.
	48	dir_mode = a_bzrdir._control_files._dir_mode
	49	file_mode = a_bzrdir._control_files._file_mode
	50
	51	def get_store(name, compressed=True, prefixed=False):
	52	# FIXME: This approach of assuming stores are all entirely compressed
	53	# or entirely uncompressed is tidy, but breaks upgrade from
	54	# some existing branches where there's a mixture; we probably
	55	# still want the option to look for both.
	56	relpath = a_bzrdir._control_files._escape(name)
	57	store = TextStore(a_bzrdir._control_files._transport.clone(relpath),
	58	prefixed=prefixed, compressed=compressed,
	59	dir_mode=dir_mode,
	60	file_mode=file_mode)
	61	return store
	62
	63	# not broken out yet because the controlweaves\|inventory_store
	64	# and text_store \| weave_store bits are still different.
	65	if isinstance(_format, RepositoryFormat4):
	66	# cannot remove these - there is still no consistent api
	67	# which allows access to this old info.
	68	self.inventory_store = get_store('inventory-store')
	69	text_store = get_store('text-store')
	70	super(AllInOneRepository, self).__init__(_format, a_bzrdir, a_bzrdir._control_files, _revision_store, control_store, text_store)
	71
	72	def get_commit_builder(self, branch, parents, config, timestamp=None,
	73	timezone=None, committer=None, revprops=None,
	74	revision_id=None):
	75	self._check_ascii_revisionid(revision_id, self.get_commit_builder)
	76	return Repository.get_commit_builder(self, branch, parents, config,
	77	timestamp, timezone, committer, revprops, revision_id)
	78
	79	@needs_read_lock
	80	def is_shared(self):
	81	"""AllInOne repositories cannot be shared."""
	82	return False
	83
	84	@needs_write_lock
	85	def set_make_working_trees(self, new_value):
	86	"""Set the policy flag for making working trees when creating branches.
	87
	88	This only applies to branches that use this repository.
	89
	90	The default is 'True'.
	91	:param new_value: True to restore the default, False to disable making
	92	working trees.
	93	"""
	94	raise NotImplementedError(self.set_make_working_trees)
	95
	96	def make_working_trees(self):
	97	"""Returns the policy for making working trees on new branches."""
	98	return True
	99
	100
	101	class WeaveMetaDirRepository(MetaDirRepository):
	102	"""A subclass of MetaDirRepository to set weave specific policy."""
	103
2241.1.8 by Martin Pool Set the repository's serializer in the places it's needed, not in the base class	104	_serializer = xml5.serializer_v5
	105
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	106	def get_commit_builder(self, branch, parents, config, timestamp=None,
	107	timezone=None, committer=None, revprops=None,
	108	revision_id=None):
	109	self._check_ascii_revisionid(revision_id, self.get_commit_builder)
	110	return MetaDirRepository.get_commit_builder(self, branch, parents,
	111	config, timestamp, timezone, committer, revprops, revision_id)
	112
	113
	114	class PreSplitOutRepositoryFormat(RepositoryFormat):
	115	"""Base class for the pre split out repository formats."""
	116
	117	rich_root_data = False
2323.5.17 by Martin Pool Add supports_tree_reference to all repo formats (robert)	118	supports_tree_reference = False
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	119
	120	def initialize(self, a_bzrdir, shared=False, _internal=False):
	121	"""Create a weave repository.
	122
	123	TODO: when creating split out bzr branch formats, move this to a common
	124	base for Format5, Format6. or something like that.
	125	"""
	126	if shared:
	127	raise errors.IncompatibleFormat(self, a_bzrdir._format)
	128
	129	if not _internal:
	130	# always initialized when the bzrdir is.
	131	return self.open(a_bzrdir, _found=True)
	132
	133	# Create an empty weave
	134	sio = StringIO()
	135	weavefile.write_weave_v5(weave.Weave(), sio)
	136	empty_weave = sio.getvalue()
	137
	138	mutter('creating repository in %s.', a_bzrdir.transport.base)
	139	dirs = ['revision-store', 'weaves']
	140	files = [('inventory.weave', StringIO(empty_weave)),
	141	]
	142
	143	# FIXME: RBC 20060125 don't peek under the covers
	144	# NB: no need to escape relative paths that are url safe.
	145	control_files = lockable_files.LockableFiles(a_bzrdir.transport,
	146	'branch-lock', lockable_files.TransportLock)
	147	control_files.create_lock()
	148	control_files.lock_write()
	149	control_files._transport.mkdir_multi(dirs,
	150	mode=control_files._dir_mode)
	151	try:
	152	for file, content in files:
	153	control_files.put(file, content)
	154	finally:
	155	control_files.unlock()
	156	return self.open(a_bzrdir, _found=True)
	157
	158	def _get_control_store(self, repo_transport, control_files):
	159	"""Return the control store for this repository."""
	160	return self._get_versioned_file_store('',
	161	repo_transport,
	162	control_files,
	163	prefixed=False)
	164
	165	def _get_text_store(self, transport, control_files):
	166	"""Get a store for file texts for this format."""
	167	raise NotImplementedError(self._get_text_store)
	168
	169	def open(self, a_bzrdir, _found=False):
	170	"""See RepositoryFormat.open()."""
	171	if not _found:
	172	# we are being called directly and must probe.
	173	raise NotImplementedError
	174
	175	repo_transport = a_bzrdir.get_repository_transport(None)
	176	control_files = a_bzrdir._control_files
	177	text_store = self._get_text_store(repo_transport, control_files)
	178	control_store = self._get_control_store(repo_transport, control_files)
	179	_revision_store = self._get_revision_store(repo_transport, control_files)
	180	return AllInOneRepository(_format=self,
	181	a_bzrdir=a_bzrdir,
	182	_revision_store=_revision_store,
183	control_store=control_store,
184	text_store=text_store)
185
186	def check_conversion_target(self, target_format):
187	pass
188
189
190	class RepositoryFormat4(PreSplitOutRepositoryFormat):
191	"""Bzr repository format 4.
192
193	This repository format has:
194	- flat stores
195	- TextStores for texts, inventories,revisions.
196
197	This format is deprecated: it indexes texts using a text id which is
198	removed in format 5; initialization and write support for this format
199	has been removed.
200	"""
201
2241.1.11 by Martin Pool Get rid of RepositoryFormat*_instance objects. Instead the format	202	_matchingbzrdir = bzrdir.BzrDirFormat4()
	203
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	204	def __init__(self):
	205	super(RepositoryFormat4, self).__init__()
	206
	207	def get_format_description(self):
	208	"""See RepositoryFormat.get_format_description()."""
	209	return "Repository format 4"
	210
	211	def initialize(self, url, shared=False, _internal=False):
	212	"""Format 4 branches cannot be created."""
	213	raise errors.UninitializableFormat(self)
	214
	215	def is_supported(self):
	216	"""Format 4 is not supported.
	217
	218	It is not supported because the model changed from 4 to 5 and the
	219	conversion logic is expensive - so doing it on the fly was not
	220	feasible.
	221	"""
	222	return False
	223
	224	def _get_control_store(self, repo_transport, control_files):
	225	"""Format 4 repositories have no formal control store at this point.
	226
	227	This will cause any control-file-needing apis to fail - this is desired.
	228	"""
	229	return None
	230
	231	def _get_revision_store(self, repo_transport, control_files):
	232	"""See RepositoryFormat._get_revision_store()."""
	233	from bzrlib.xml4 import serializer_v4
	234	return self._get_text_rev_store(repo_transport,
	235	control_files,
	236	'revision-store',
	237	serializer=serializer_v4)
	238
	239	def _get_text_store(self, transport, control_files):
	240	"""See RepositoryFormat._get_text_store()."""
	241
	242
	243	class RepositoryFormat5(PreSplitOutRepositoryFormat):
	244	"""Bzr control format 5.
	245
	246	This repository format has:
	247	- weaves for file texts and inventory
	248	- flat stores
	249	- TextStores for revisions and signatures.
	250	"""
	251
2241.1.10 by Martin Pool Remove more references to weaves from the repository.py file	252	_versionedfile_class = weave.WeaveFile
2241.1.11 by Martin Pool Get rid of RepositoryFormat*_instance objects. Instead the format	253	_matchingbzrdir = bzrdir.BzrDirFormat5()
2241.1.10 by Martin Pool Remove more references to weaves from the repository.py file	254
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	255	def __init__(self):
	256	super(RepositoryFormat5, self).__init__()
	257
	258	def get_format_description(self):
	259	"""See RepositoryFormat.get_format_description()."""
	260	return "Weave repository format 5"
	261
	262	def _get_revision_store(self, repo_transport, control_files):
	263	"""See RepositoryFormat._get_revision_store()."""
	264	"""Return the revision store object for this a_bzrdir."""
	265	return self._get_text_rev_store(repo_transport,
	266	control_files,
	267	'revision-store',
	268	compressed=False)
	269
	270	def _get_text_store(self, transport, control_files):
	271	"""See RepositoryFormat._get_text_store()."""
	272	return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
	273
	274
	275	class RepositoryFormat6(PreSplitOutRepositoryFormat):
	276	"""Bzr control format 6.
	277
	278	This repository format has:
	279	- weaves for file texts and inventory
	280	- hash subdirectory based stores.
	281	- TextStores for revisions and signatures.
	282	"""
	283
2241.1.10 by Martin Pool Remove more references to weaves from the repository.py file	284	_versionedfile_class = weave.WeaveFile
2241.1.11 by Martin Pool Get rid of RepositoryFormat*_instance objects. Instead the format	285	_matchingbzrdir = bzrdir.BzrDirFormat6()
2241.1.10 by Martin Pool Remove more references to weaves from the repository.py file	286
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	287	def __init__(self):
	288	super(RepositoryFormat6, self).__init__()
	289
	290	def get_format_description(self):
	291	"""See RepositoryFormat.get_format_description()."""
	292	return "Weave repository format 6"
	293
	294	def _get_revision_store(self, repo_transport, control_files):
	295	"""See RepositoryFormat._get_revision_store()."""
	296	return self._get_text_rev_store(repo_transport,
	297	control_files,
	298	'revision-store',
	299	compressed=False,
	300	prefixed=True)
	301
	302	def _get_text_store(self, transport, control_files):
	303	"""See RepositoryFormat._get_text_store()."""
	304	return self._get_versioned_file_store('weaves', transport, control_files)
	305
	306
	307	class RepositoryFormat7(MetaDirRepositoryFormat):
	308	"""Bzr repository 7.
	309
	310	This repository format has:
	311	- weaves for file texts and inventory
	312	- hash subdirectory based stores.
	313	- TextStores for revisions and signatures.
	314	- a format marker of its own
	315	- an optional 'shared-storage' flag
	316	- an optional 'no-working-trees' flag
	317	"""
	318
2241.1.10 by Martin Pool Remove more references to weaves from the repository.py file	319	_versionedfile_class = weave.WeaveFile
	320
2241.1.4 by Martin Pool Moved old weave-based repository formats into bzrlib.repofmt.weaverepo.	321	def _get_control_store(self, repo_transport, control_files):
	322	"""Return the control store for this repository."""
	323	return self._get_versioned_file_store('',
	324	repo_transport,
	325	control_files,
	326	prefixed=False)
	327
	328	def get_format_string(self):
	329	"""See RepositoryFormat.get_format_string()."""
	330	return "Bazaar-NG Repository format 7"
	331
	332	def get_format_description(self):
	333	"""See RepositoryFormat.get_format_description()."""
	334	return "Weave repository format 7"
	335
	336	def check_conversion_target(self, target_format):
	337	pass
	338
	339	def _get_revision_store(self, repo_transport, control_files):
	340	"""See RepositoryFormat._get_revision_store()."""
	341	return self._get_text_rev_store(repo_transport,
	342	control_files,
	343	'revision-store',
	344	compressed=False,
	345	prefixed=True,
	346	)
	347
	348	def _get_text_store(self, transport, control_files):
	349	"""See RepositoryFormat._get_text_store()."""
	350	return self._get_versioned_file_store('weaves',
	351	transport,
	352	control_files)
	353
	354	def initialize(self, a_bzrdir, shared=False):
	355	"""Create a weave repository.
	356
	357	:param shared: If true the repository will be initialized as a shared
	358	repository.
	359	"""
	360	# Create an empty weave
	361	sio = StringIO()
	362	weavefile.write_weave_v5(weave.Weave(), sio)
	363	empty_weave = sio.getvalue()
	364
	365	mutter('creating repository in %s.', a_bzrdir.transport.base)
	366	dirs = ['revision-store', 'weaves']
	367	files = [('inventory.weave', StringIO(empty_weave)),
	368	]
	369	utf8_files = [('format', self.get_format_string())]
	370
	371	self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
	372	return self.open(a_bzrdir=a_bzrdir, _found=True)
	373
	374	def open(self, a_bzrdir, _found=False, _override_transport=None):
	375	"""See RepositoryFormat.open().
	376
	377	:param _override_transport: INTERNAL USE ONLY. Allows opening the
	378	repository at a slightly different url
	379	than normal. I.e. during 'upgrade'.
	380	"""
	381	if not _found:
	382	format = RepositoryFormat.find_format(a_bzrdir)
	383	assert format.__class__ == self.__class__
	384	if _override_transport is not None:
385	repo_transport = _override_transport
386	else:
387	repo_transport = a_bzrdir.get_repository_transport(None)
388	control_files = lockable_files.LockableFiles(repo_transport,
389	'lock', lockdir.LockDir)
390	text_store = self._get_text_store(repo_transport, control_files)
391	control_store = self._get_control_store(repo_transport, control_files)
392	_revision_store = self._get_revision_store(repo_transport, control_files)
393	return WeaveMetaDirRepository(_format=self,
394	a_bzrdir=a_bzrdir,
395	control_files=control_files,
396	_revision_store=_revision_store,
397	control_store=control_store,
398	text_store=text_store)
399
400
401	_legacy_formats = [RepositoryFormat4(),
402	RepositoryFormat5(),
403	RepositoryFormat6()]