1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
#! /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_v4(Serializer):
"""Version 0.0.4 serializer
You should use the serialzer_v4 singleton."""
__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"""
e = Element('entry')
e.set('name', ie.name)
e.set('file_id', ie.file_id)
e.set('kind', ie.kind)
if ie.text_size != None:
e.set('text_size', '%d' % ie.text_size)
for f in ['text_id', 'text_sha1']:
v = getattr(ie, f)
if v != 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 == None:
parent_id = ROOT_ID
ie = InventoryEntry(elt.get('file_id'),
elt.get('name'),
elt.get('kind'),
parent_id)
ie.text_id = elt.get('text_id')
ie.text_sha1 = elt.get('text_sha1')
## mutter("read inventoryentry: %r" % (elt.attrib))
v = elt.get('text_size')
ie.text_size = v and int(v)
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.parents.append(p.get('revision_id'))
rev.parent_sha1s.append(p.get('revision_sha1'))
if precursor:
# must be consistent
prec_parent = rev.parents[0].revision_id
assert prec_parent == precursor
elif precursor:
# revisions written prior to 0.0.5 have a single precursor
# give as an attribute
rev.parents.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()
|