44
40
elt = self._pack_inventory(inv)
45
41
self._write_element(elt, f)
47
def write_inventory_to_string(self, inv):
48
return tostring(self._pack_inventory(inv)) + '\n'
50
def read_inventory_from_string(self, xml_string):
51
return self._unpack_inventory(fromstring(xml_string))
53
43
def read_inventory(self, f):
54
44
return self._unpack_inventory(self._read_element(f))
56
46
def write_revision(self, rev, f):
57
47
self._write_element(self._pack_revision(rev), f)
59
def write_revision_to_string(self, rev):
60
return tostring(self._pack_revision(rev)) + '\n'
62
49
def read_revision(self, f):
63
50
return self._unpack_revision(self._read_element(f))
65
def read_revision_from_string(self, xml_string):
66
return self._unpack_revision(fromstring(xml_string))
68
52
def _write_element(self, elt, f):
69
53
ElementTree(elt).write(f, 'utf-8')
72
56
def _read_element(self, f):
73
57
return ElementTree().parse(f)
61
class _Serializer_v4(Serializer):
62
"""Version 0.0.4 serializer
64
You should use the serialzer_v4 singleton."""
68
def _pack_inventory(self, inv):
69
"""Convert to XML Element"""
70
e = Element('inventory')
72
if inv.root.file_id not in (None, ROOT_ID):
73
e.set('file_id', inv.root.file_id)
74
for path, ie in inv.iter_entries():
75
e.append(self._pack_entry(ie))
79
def _pack_entry(self, ie):
80
"""Convert InventoryEntry to XML element"""
82
e.set('name', ie.name)
83
e.set('file_id', ie.file_id)
84
e.set('kind', ie.kind)
86
if ie.text_size != None:
87
e.set('text_size', '%d' % ie.text_size)
89
for f in ['text_id', 'text_sha1']:
94
# to be conservative, we don't externalize the root pointers
95
# for now, leaving them as null in the xml form. in a future
96
# version it will be implied by nested elements.
97
if ie.parent_id != ROOT_ID:
98
assert isinstance(ie.parent_id, basestring)
99
e.set('parent_id', ie.parent_id)
106
def _unpack_inventory(self, elt):
107
"""Construct from XML Element
109
assert elt.tag == 'inventory'
110
root_id = elt.get('file_id') or ROOT_ID
111
inv = Inventory(root_id)
113
ie = self._unpack_entry(e)
114
if ie.parent_id == ROOT_ID:
115
ie.parent_id = root_id
120
def _unpack_entry(self, elt):
121
assert elt.tag == 'entry'
123
## original format inventories don't have a parent_id for
124
## nodes in the root directory, but it's cleaner to use one
126
parent_id = elt.get('parent_id')
127
if parent_id == None:
130
ie = InventoryEntry(elt.get('file_id'),
134
ie.text_id = elt.get('text_id')
135
ie.text_sha1 = elt.get('text_sha1')
137
## mutter("read inventoryentry: %r" % (elt.attrib))
139
v = elt.get('text_size')
140
ie.text_size = v and int(v)
145
def _pack_revision(self, rev):
146
"""Revision object -> xml tree"""
147
root = Element('revision',
148
committer = rev.committer,
149
timestamp = '%.9f' % rev.timestamp,
150
revision_id = rev.revision_id,
151
inventory_id = rev.inventory_id,
152
inventory_sha1 = rev.inventory_sha1,
155
root.set('timezone', str(rev.timezone))
158
msg = SubElement(root, 'message')
159
msg.text = rev.message
163
pelts = SubElement(root, 'parents')
164
pelts.tail = pelts.text = '\n'
165
for rr in rev.parents:
166
assert isinstance(rr, RevisionReference)
167
p = SubElement(pelts, 'revision_ref')
169
assert rr.revision_id
170
p.set('revision_id', rr.revision_id)
172
p.set('revision_sha1', rr.revision_sha1)
177
def _unpack_revision(self, elt):
178
"""XML Element -> Revision object"""
180
# <changeset> is deprecated...
181
if elt.tag not in ('revision', 'changeset'):
182
raise BzrError("unexpected tag in revision file: %r" % elt)
184
rev = Revision(committer = elt.get('committer'),
185
timestamp = float(elt.get('timestamp')),
186
revision_id = elt.get('revision_id'),
187
inventory_id = elt.get('inventory_id'),
188
inventory_sha1 = elt.get('inventory_sha1')
191
precursor = elt.get('precursor')
192
precursor_sha1 = elt.get('precursor_sha1')
194
pelts = elt.find('parents')
198
assert p.tag == 'revision_ref', \
199
"bad parent node tag %r" % p.tag
200
rev_ref = RevisionReference(p.get('revision_id'),
201
p.get('revision_sha1'))
202
rev.parents.append(rev_ref)
206
prec_parent = rev.parents[0].revision_id
207
assert prec_parent == precursor
209
# revisions written prior to 0.0.5 have a single precursor
210
# give as an attribute
211
rev_ref = RevisionReference(precursor, precursor_sha1)
212
rev.parents.append(rev_ref)
214
v = elt.get('timezone')
215
rev.timezone = v and int(v)
217
rev.message = elt.findtext('message') # text of <message>
222
class _Serializer_v5(Serializer):
223
"""Version 5 serializer
225
Packs objects into XML and vice versa.
227
You should use the serialzer_v5 singleton."""
231
def _pack_inventory(self, inv):
232
"""Convert to XML Element"""
233
e = Element('inventory')
235
if inv.root.file_id not in (None, ROOT_ID):
236
e.set('file_id', inv.root.file_id)
237
for path, ie in inv.iter_entries():
238
e.append(self._pack_entry(ie))
242
def _pack_entry(self, ie):
243
"""Convert InventoryEntry to XML element"""
244
assert ie.kind == 'directory' or ie.kind == 'file'
246
e.set('name', ie.name)
247
e.set('file_id', ie.file_id)
249
if ie.text_size != None:
250
e.set('text_size', '%d' % ie.text_size)
252
for f in ['text_version', 'text_sha1', 'entry_version']:
257
# to be conservative, we don't externalize the root pointers
258
# for now, leaving them as null in the xml form. in a future
259
# version it will be implied by nested elements.
260
if ie.parent_id != ROOT_ID:
261
assert isinstance(ie.parent_id, basestring)
262
e.set('parent_id', ie.parent_id)
269
def _pack_revision(self, rev):
270
"""Revision object -> xml tree"""
271
root = Element('revision',
272
committer = rev.committer,
273
timestamp = '%.9f' % rev.timestamp,
274
revision_id = rev.revision_id,
275
inventory_id = rev.inventory_id,
276
inventory_sha1 = rev.inventory_sha1,
279
root.set('timezone', str(rev.timezone))
282
msg = SubElement(root, 'message')
283
msg.text = rev.message
287
pelts = SubElement(root, 'parents')
288
pelts.tail = pelts.text = '\n'
289
for rr in rev.parents:
290
assert isinstance(rr, RevisionReference)
291
p = SubElement(pelts, 'revision_ref')
293
assert rr.revision_id
294
p.set('revision_id', rr.revision_id)
300
def _unpack_inventory(self, elt):
301
"""Construct from XML Element
303
assert elt.tag == 'inventory'
304
root_id = elt.get('file_id') or ROOT_ID
305
inv = Inventory(root_id)
307
ie = self._unpack_entry(e)
308
if ie.parent_id == ROOT_ID:
309
ie.parent_id = root_id
314
def _unpack_entry(self, elt):
316
assert kind == 'directory' or kind == 'file'
318
parent_id = elt.get('parent_id')
319
if parent_id == None:
322
ie = InventoryEntry(elt.get('file_id'),
326
ie.text_version = elt.get('text_version')
327
ie.entry_version = elt.get('entry_version')
328
ie.text_sha1 = elt.get('text_sha1')
329
v = elt.get('text_size')
330
ie.text_size = v and int(v)
335
def _unpack_revision(self, elt):
336
"""XML Element -> Revision object"""
337
assert elt.tag == 'revision'
339
rev = Revision(committer = elt.get('committer'),
340
timestamp = float(elt.get('timestamp')),
341
revision_id = elt.get('revision_id'),
342
inventory_id = elt.get('inventory_id'),
343
inventory_sha1 = elt.get('inventory_sha1')
346
for p in elt.find('parents'):
347
assert p.tag == 'revision_ref', \
348
"bad parent node tag %r" % p.tag
349
rev_ref = RevisionReference(p.get('revision_id'))
350
rev.parents.append(rev_ref)
352
v = elt.get('timezone')
353
rev.timezone = v and int(v)
355
rev.message = elt.findtext('message') # text of <message>
360
"""singleton instance"""
361
serializer_v4 = _Serializer_v4()
363
serializer_v5 = _Serializer_v5()