56
75
return ElementTree().parse(f)
60
class _Serializer_v4(Serializer):
61
"""Version 0.0.4 serializer
63
You should use the serialzer_v4 singleton."""
67
def _pack_inventory(self, inv):
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"""Convert to XML Element"""
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e = Element('inventory')
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if inv.root.file_id not in (None, ROOT_ID):
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e.set('file_id', inv.root.file_id)
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for path, ie in inv.iter_entries():
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e.append(self._pack_entry(ie))
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def _pack_entry(self, ie):
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"""Convert InventoryEntry to XML element"""
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e.set('name', ie.name)
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e.set('file_id', ie.file_id)
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e.set('kind', ie.kind)
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if ie.text_size != None:
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e.set('text_size', '%d' % ie.text_size)
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for f in ['text_id', 'text_sha1']:
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# to be conservative, we don't externalize the root pointers
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# for now, leaving them as null in the xml form. in a future
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# version it will be implied by nested elements.
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if ie.parent_id != ROOT_ID:
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assert isinstance(ie.parent_id, basestring)
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e.set('parent_id', ie.parent_id)
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def _unpack_inventory(self, elt):
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"""Construct from XML Element
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assert elt.tag == 'inventory'
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root_id = elt.get('file_id') or ROOT_ID
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inv = Inventory(root_id)
112
ie = self._unpack_entry(e)
113
if ie.parent_id == ROOT_ID:
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ie.parent_id = root_id
119
def _unpack_entry(self, elt):
120
assert elt.tag == 'entry'
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## original format inventories don't have a parent_id for
123
## nodes in the root directory, but it's cleaner to use one
125
parent_id = elt.get('parent_id')
126
if parent_id == None:
129
ie = InventoryEntry(elt.get('file_id'),
133
ie.text_id = elt.get('text_id')
134
ie.text_sha1 = elt.get('text_sha1')
136
## mutter("read inventoryentry: %r" % (elt.attrib))
138
v = elt.get('text_size')
139
ie.text_size = v and int(v)
144
def _pack_revision(self, rev):
145
"""Revision object -> xml tree"""
146
root = Element('revision',
147
committer = rev.committer,
148
timestamp = '%.9f' % rev.timestamp,
149
revision_id = rev.revision_id,
150
inventory_id = rev.inventory_id,
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inventory_sha1 = rev.inventory_sha1,
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root.set('timezone', str(rev.timezone))
157
msg = SubElement(root, 'message')
158
msg.text = rev.message
162
pelts = SubElement(root, 'parents')
163
pelts.tail = pelts.text = '\n'
164
for rr in rev.parents:
165
assert isinstance(rr, RevisionReference)
166
p = SubElement(pelts, 'revision_ref')
168
assert rr.revision_id
169
p.set('revision_id', rr.revision_id)
171
p.set('revision_sha1', rr.revision_sha1)
176
def _unpack_revision(self, elt):
177
"""XML Element -> Revision object"""
179
# <changeset> is deprecated...
180
if elt.tag not in ('revision', 'changeset'):
181
raise BzrError("unexpected tag in revision file: %r" % elt)
183
rev = Revision(committer = elt.get('committer'),
184
timestamp = float(elt.get('timestamp')),
185
revision_id = elt.get('revision_id'),
186
inventory_id = elt.get('inventory_id'),
187
inventory_sha1 = elt.get('inventory_sha1')
190
precursor = elt.get('precursor')
191
precursor_sha1 = elt.get('precursor_sha1')
193
pelts = elt.find('parents')
197
assert p.tag == 'revision_ref', \
198
"bad parent node tag %r" % p.tag
199
rev_ref = RevisionReference(p.get('revision_id'),
200
p.get('revision_sha1'))
201
rev.parents.append(rev_ref)
205
prec_parent = rev.parents[0].revision_id
206
assert prec_parent == precursor
208
# revisions written prior to 0.0.5 have a single precursor
209
# give as an attribute
210
rev_ref = RevisionReference(precursor, precursor_sha1)
211
rev.parents.append(rev_ref)
213
v = elt.get('timezone')
214
rev.timezone = v and int(v)
216
rev.message = elt.findtext('message') # text of <message>
222
"""singleton instance"""
223
serializer_v4 = _Serializer_v4()
78
# performance tuning for elementree's serialiser. This should be
79
# sent upstream - RBC 20060523.
80
# the functions here are patched into elementtree at runtime.
82
escape_re = re.compile("[&'\"<>]")
85
"'":"'", # FIXME: overkill
90
def _escape_replace(match, map=escape_map):
91
return map[match.group()]
93
def _escape_attrib(text, encoding=None, replace=None):
94
# escape attribute value
98
text = elementtree.ElementTree._encode(text, encoding)
100
return elementtree.ElementTree._encode_entity(text)
102
return escape_re.sub(_escape_replace, text)
104
text = replace(text, "&", "&")
105
text = replace(text, "'", "'") # FIXME: overkill
106
text = replace(text, "\"", """)
107
text = replace(text, "<", "<")
108
text = replace(text, ">", ">")
110
except (TypeError, AttributeError):
111
elementtree.ElementTree._raise_serialization_error(text)
113
elementtree.ElementTree._escape_attrib = _escape_attrib
115
escape_cdata_re = re.compile("[&<>]")
121
def _escape_cdata_replace(match, map=escape_cdata_map):
122
return map[match.group()]
124
def _escape_cdata(text, encoding=None, replace=None):
125
# escape character data
129
text = elementtree.ElementTree._encode(text, encoding)
131
return elementtree.ElementTree._encode_entity(text)
133
return escape_cdata_re.sub(_escape_cdata_replace, text)
135
text = replace(text, "&", "&")
136
text = replace(text, "<", "<")
137
text = replace(text, ">", ">")
139
except (TypeError, AttributeError):
140
elementtree.ElementTree._raise_serialization_error(text)
142
elementtree.ElementTree._escape_cdata = _escape_cdata