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#! /usr/bin/env python
# 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 import ElementTree, SubElement, Element, Serializer
from bzrlib.inventory import ROOT_ID, Inventory, InventoryEntry
from bzrlib.revision import Revision
from bzrlib.errors import BzrError
class Serializer_v5(Serializer):
"""Version 5 serializer
Packs objects into XML and vice versa.
"""
__slots__ = []
def _pack_inventory(self, inv):
"""Convert to XML Element"""
e = Element('inventory')
e.text = '\n'
if inv.root.file_id not in (None, ROOT_ID):
e.set('file_id', inv.root.file_id)
for path, ie in inv.iter_entries():
e.append(self._pack_entry(ie))
return e
def _pack_entry(self, ie):
"""Convert InventoryEntry to XML element"""
if not InventoryEntry.versionable_kind(ie.kind):
raise AssertionError('unsupported entry kind %s' % ie.kind)
e = Element(ie.kind)
e.set('name', ie.name)
e.set('file_id', ie.file_id)
if ie.text_size != None:
e.set('text_size', '%d' % ie.text_size)
for f in ['text_sha1', 'revision', 'symlink_target']:
v = getattr(ie, f)
if v != None:
e.set(f, v)
if ie.executable:
e.set('executable', 'yes')
# 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 _pack_revision(self, rev):
"""Revision object -> xml tree"""
root = Element('revision',
committer = rev.committer,
timestamp = '%.9f' % rev.timestamp,
revision_id = rev.revision_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.parent_ids:
pelts = SubElement(root, 'parents')
pelts.tail = pelts.text = '\n'
for parent_id in rev.parent_ids:
assert isinstance(parent_id, basestring)
p = SubElement(pelts, 'revision_ref')
p.tail = '\n'
p.set('revision_id', parent_id)
return root
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):
kind = elt.tag
if not InventoryEntry.versionable_kind(kind):
raise AssertionError('unsupported entry kind %s' % kind)
parent_id = elt.get('parent_id')
if parent_id == None:
parent_id = ROOT_ID
ie = InventoryEntry(elt.get('file_id'),
elt.get('name'),
kind,
parent_id)
ie.revision = elt.get('revision')
ie.text_sha1 = elt.get('text_sha1')
ie.symlink_target = elt.get('symlink_target')
if elt.get('executable') == 'yes':
ie.executable = True
v = elt.get('text_size')
ie.text_size = v and int(v)
return ie
def _unpack_revision(self, elt):
"""XML Element -> Revision object"""
assert elt.tag == 'revision'
rev = Revision(committer = elt.get('committer'),
timestamp = float(elt.get('timestamp')),
revision_id = elt.get('revision_id'),
inventory_sha1 = elt.get('inventory_sha1')
)
parents = elt.find('parents') or []
for p in parents:
assert p.tag == 'revision_ref', \
"bad parent node tag %r" % p.tag
rev.parent_ids.append(p.get('revision_id'))
v = elt.get('timezone')
rev.timezone = v and int(v)
rev.message = elt.findtext('message') # text of <message>
return rev
serializer_v5 = Serializer_v5()
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