1 | """ |
---|
2 | Archetypes Marshall namespace but which can safely handle |
---|
3 | Control Characters for you |
---|
4 | """ |
---|
5 | |
---|
6 | from Products.Archetypes.interfaces.base import IBaseUnit |
---|
7 | |
---|
8 | from Products.Marshall import config |
---|
9 | from Products.Marshall.handlers.atxml import XmlNamespace |
---|
10 | from Products.Marshall.handlers.atxml import SchemaAttribute |
---|
11 | from Products.Marshall.handlers.atxml import getRegisteredNamespaces |
---|
12 | from Products.Marshall.exceptions import MarshallingException |
---|
13 | from Products.Marshall import utils |
---|
14 | |
---|
15 | from Products.Marshall.namespaces import atns as base |
---|
16 | |
---|
17 | from quintagroup.transmogrifier.namespaces.util import has_ctrlchars |
---|
18 | |
---|
19 | |
---|
20 | class ATAttribute(base.ATAttribute): |
---|
21 | |
---|
22 | def serialize(self, dom, parent_node, instance, options={}): |
---|
23 | |
---|
24 | values = self.get(instance) |
---|
25 | if not values: |
---|
26 | return |
---|
27 | |
---|
28 | is_ref = self.isReference(instance) |
---|
29 | |
---|
30 | for value in values: |
---|
31 | node = dom.createElementNS(self.namespace.xmlns, "field") |
---|
32 | name_attr = dom.createAttribute("name") |
---|
33 | name_attr.value = self.name |
---|
34 | node.setAttributeNode(name_attr) |
---|
35 | |
---|
36 | # try to get 'utf-8' encoded string |
---|
37 | if isinstance(value, unicode): |
---|
38 | value = value.encode('utf-8') |
---|
39 | elif IBaseUnit.isImplementedBy(value): |
---|
40 | value = value.getRaw(encoding='utf-8') |
---|
41 | else: |
---|
42 | value = str(value) |
---|
43 | |
---|
44 | if is_ref: |
---|
45 | if config.HANDLE_REFS: |
---|
46 | ref_node = dom.createElementNS(self.namespace.xmlns, |
---|
47 | 'reference') |
---|
48 | uid_node = dom.createElementNS(self.namespace.xmlns, |
---|
49 | 'uid') |
---|
50 | value = response.createTextNode(value) |
---|
51 | uid_node.append(value) |
---|
52 | ref_node.append(uid_node) |
---|
53 | node.append(ref_node) |
---|
54 | elif isinstance(value, str) and has_ctrlchars(value): |
---|
55 | value = value.encode('base64') |
---|
56 | attr = dom.createAttributeNS(self.namespace.xmlns, |
---|
57 | 'transfer_encoding') |
---|
58 | attr.value = 'base64' |
---|
59 | node.setAttributeNode(attr) |
---|
60 | value_node = dom.createCDATASection(value) |
---|
61 | node.appendChild(value_node) |
---|
62 | else: |
---|
63 | value_node = dom.createTextNode(value) |
---|
64 | node.appendChild(value_node) |
---|
65 | |
---|
66 | node.normalize() |
---|
67 | parent_node.appendChild(node) |
---|
68 | |
---|
69 | return True |
---|
70 | |
---|
71 | def processXmlValue(self, context, value ): |
---|
72 | value = value.strip() |
---|
73 | if not value: |
---|
74 | return |
---|
75 | |
---|
76 | # decode node value if needed |
---|
77 | te = context.node.get('transfer_encoding', None) |
---|
78 | if te is not None: |
---|
79 | value = value.decode(te) |
---|
80 | |
---|
81 | data = context.getDataFor(self.namespace.xmlns) |
---|
82 | if data.has_key(self.name): |
---|
83 | svalues = data[self.name] |
---|
84 | if not isinstance(svalues, list): |
---|
85 | data[self.name] = svalues = [svalues] |
---|
86 | svalues.append(value) |
---|
87 | return |
---|
88 | else: |
---|
89 | data[self.name] = value |
---|
90 | |
---|
91 | class Archetypes(base.Archetypes): |
---|
92 | |
---|
93 | def getAttributeByName(self, schema_name, context=None): |
---|
94 | if context is not None and schema_name not in self.at_fields: |
---|
95 | if not context.instance.Schema().has_key(schema_name): |
---|
96 | return |
---|
97 | raise AssertionError, \ |
---|
98 | "invalid attribute %s"%(schema_name) |
---|
99 | |
---|
100 | if schema_name in self.at_fields: |
---|
101 | return self.at_fields[schema_name] |
---|
102 | |
---|
103 | attribute = ATAttribute(schema_name) |
---|
104 | attribute.setNamespace(self) |
---|
105 | |
---|
106 | return attribute |
---|