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# Copyright (C) 2005, 2006 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
from bzrlib.xml_serializer import ElementTree, SubElement, Element, Serializer
from bzrlib.inventory import ROOT_ID, Inventory, InventoryEntry
import bzrlib.inventory as inventory
from bzrlib.revision import Revision
from bzrlib.errors import BzrError
class _Serializer_v4(Serializer):
"""Version 0.0.4 serializer
You should use the serializer_v4 singleton.
v4 serialisation is no longer supported, only deserialisation.
"""
__slots__ = []
def _pack_entry(self, ie):
"""Convert InventoryEntry to XML element"""
e = Element('entry')
e.set('name', ie.name)
e.set('file_id', ie.file_id)
e.set('kind', ie.kind)
if ie.text_size is not None:
e.set('text_size', '%d' % ie.text_size)
for f in ['text_id', 'text_sha1', 'symlink_target']:
v = getattr(ie, f)
if v is not None:
e.set(f, v)
# to be conservative, we don't externalize the root pointers
# for now, leaving them as null in the xml form. in a future
# version it will be implied by nested elements.
if ie.parent_id != ROOT_ID:
assert isinstance(ie.parent_id, basestring)
e.set('parent_id', ie.parent_id)
e.tail = '\n'
return e
def _unpack_inventory(self, elt):
"""Construct from XML Element
"""
assert elt.tag == 'inventory'
root_id = elt.get('file_id') or ROOT_ID
inv = Inventory(root_id)
for e in elt:
ie = self._unpack_entry(e)
if ie.parent_id == ROOT_ID:
ie.parent_id = root_id
inv.add(ie)
return inv
def _unpack_entry(self, elt):
assert elt.tag == 'entry'
## original format inventories don't have a parent_id for
## nodes in the root directory, but it's cleaner to use one
## internally.
parent_id = elt.get('parent_id')
if parent_id is None:
parent_id = ROOT_ID
kind = elt.get('kind')
if kind == 'directory':
ie = inventory.InventoryDirectory(elt.get('file_id'),
elt.get('name'),
parent_id)
elif kind == 'file':
ie = inventory.InventoryFile(elt.get('file_id'),
elt.get('name'),
parent_id)
ie.text_id = elt.get('text_id')
ie.text_sha1 = elt.get('text_sha1')
v = elt.get('text_size')
ie.text_size = v and int(v)
elif kind == 'symlink':
ie = inventory.InventoryLink(elt.get('file_id'),
elt.get('name'),
parent_id)
ie.symlink_target = elt.get('symlink_target')
else:
raise BzrError("unknown kind %r" % kind)
## mutter("read inventoryentry: %r", elt.attrib)
return ie
def _pack_revision(self, rev):
"""Revision object -> xml tree"""
root = Element('revision',
committer = rev.committer,
timestamp = '%.9f' % rev.timestamp,
revision_id = rev.revision_id,
inventory_id = rev.inventory_id,
inventory_sha1 = rev.inventory_sha1,
)
if rev.timezone:
root.set('timezone', str(rev.timezone))
root.text = '\n'
msg = SubElement(root, 'message')
msg.text = rev.message
msg.tail = '\n'
if rev.parents:
pelts = SubElement(root, 'parents')
pelts.tail = pelts.text = '\n'
for i, parent_id in enumerate(rev.parents):
p = SubElement(pelts, 'revision_ref')
p.tail = '\n'
assert parent_id
p.set('revision_id', parent_id)
if i < len(rev.parent_sha1s):
p.set('revision_sha1', rev.parent_sha1s[i])
return root
def _unpack_revision(self, elt):
"""XML Element -> Revision object"""
# <changeset> is deprecated...
if elt.tag not in ('revision', 'changeset'):
raise BzrError("unexpected tag in revision file: %r" % elt)
rev = Revision(committer = elt.get('committer'),
timestamp = float(elt.get('timestamp')),
revision_id = elt.get('revision_id'),
inventory_id = elt.get('inventory_id'),
inventory_sha1 = elt.get('inventory_sha1')
)
precursor = elt.get('precursor')
precursor_sha1 = elt.get('precursor_sha1')
pelts = elt.find('parents')
if pelts:
for p in pelts:
assert p.tag == 'revision_ref', \
"bad parent node tag %r" % p.tag
rev.parent_ids.append(p.get('revision_id'))
rev.parent_sha1s.append(p.get('revision_sha1'))
if precursor:
# must be consistent
prec_parent = rev.parent_ids[0]
assert prec_parent == precursor
elif precursor:
# revisions written prior to 0.0.5 have a single precursor
# give as an attribute
rev.parent_ids.append(precursor)
rev.parent_sha1s.append(precursor_sha1)
v = elt.get('timezone')
rev.timezone = v and int(v)
rev.message = elt.findtext('message') # text of <message>
return rev
"""singleton instance"""
serializer_v4 = _Serializer_v4()
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