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Using the special language value '*' will return a dictionary of all
such elements keyed by language.
>>> msg = Message()
>>> msg['body'] = 'Hi!'
>>> msg['body|sv'] = 'Hej!'
>>> print(msg)
'<message xmlns="jabber:client">
<body>Hi!</body>
<body xml:lang="sv">Hej!</body>
</message>'
>>> print(msg['body|*'])
OrderedDict(
('', 'Hi!'),
('sv', 'Hej!'))
Remaining items:
- Stanza path matching does not support language specifiers for normal
interfaces, only for plugins.
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Remaining items are suitable default actions for language supporting
interfaces.
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Fixes issue #159
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The set of bool_interfaces provides default behaviour for
checking/setting the presence of empty subelements.
The prime example of this would be:
bool_interfaces = set(['required'])
This would mean that ``stanza['required']`` would return ``True`` for:
<stanza>
<required />
</stanza>
and ``False`` for:
<stanza />
Likewise, assigning ``stanza['required'] = True`` would add an empty
``<required />`` element, and setting it to ``False`` would remove
such an element if it exists.
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cElementTree
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The parsing and namespace cleaning isn't terribly expensive, but it does
add up. It was adding an extra 5sec when processing 100,000 basic
message stanzas.
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A filter accepts and returns a stanza, but potentially modified.
To prevent sending/receiving a stanza, a filter may return None.
Incoming:
self.add_filter('in', in_filter)
Outgoing:
self.add_filter('out', out_filter)
Filters are applied in the order thay are added. However, you may
add an order parameter, which is the place in the list to insert the
filter:
self.add_filter('in', in_filter, order=0)
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If an iterable plugin was an enabled, it wasn't added to
the iterables list.
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Conflicts:
sleekxmpp/clientxmpp.py
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Use the parameter now=True to skip the queue when
sending Iq stanzas, or using xmpp.send().
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Each interface, say foo, may be overridden in three ways:
set_foo
get_foo
del_foo
To declare an override in a plugin, add the class field
overrides as so:
overrides = ['set_foo', 'del_foo']
Each override must have a matching set_foo(), etc method
for implementing the new behaviour.
To enable the overrides for a particular parent stanza,
pass the option overrides=True to register_stanza_plugin.
register_stanza_plugin(Stanza, Plugin, overrides=True)
Example code:
class Test(ElementBase):
name = 'test'
namespace = 'testing'
interfaces = set(('foo', 'bar'))
sub_interfaces = set(('bar',))
class TestOverride(ElementBase):
name = 'test-override'
namespace = 'testing'
plugin_attrib = 'override'
interfaces = set(('foo',))
overrides = ['set_foo']
def setup(self, xml):
# Don't include an XML element in the parent stanza
# since we're adding just an attribute.
# If adding a regular subelement, no need to do this.
self.xml = ET.Element('')
def set_foo(self, value):
print("overrides!")
self.parent()._set_attr('foo', 'override-%s' % value)
register_stanza_plugin(Test, TestOverride, overrides=True)
Example usage:
>>> t = TestStanza()
>>> t['foo'] = 'bar'
>>> t['foo']
'override-bar'
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Required fixing a few bugs in StanzaBase related to iterable
substanzas.
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Conflicts:
sleekxmpp/xmlstream/stanzabase.py
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ElementBase instances will display the top-most namespace by default.
StanzaBase instances will NOT display the top-most namespace by default.
May pass True or False to __str__ to override.
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Conflicts:
sleekxmpp/xmlstream/stanzabase.py
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This should prevent some reference cycles that will cause garbage
collection issues.
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This allows exceptions to include the original
content of a stanza in the error response by including
the parameter clear=False when raising the exception.
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Will now always show top-level namespace, unless it is the same
as the stream's default namespace. Also added the XMPP stream
namespace to the namespace map as 'stream'.
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This allows you to determine the order in which substanzas
were added in the original XML.
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Use stanza.values instead of _get/set_stanza_values where used.
ElementBase stanzas can now use .tag
May use class method tag_name() for stanza classes.
ElementBase now has .clear() method.
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May now use register_stanza_plugin(Foo, Bar, iterable=True)
to add to the set of stanza classes used for iterable
substanzas. It is no longer necessary to manually specify
the contents of subitem if the new method is used.
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A stanza object may add is_extension = True to its class definition
to provide a single new interface to a parent stanza.
For example:
import sleekxmpp
from sleekxmpp import Iq
from sleekxmpp.xmlstream import ElementBase, register_stanza_plugin, ET
class Foo(ElementBase):
"""
Test adding just an attribute to a parent stanza.
Adding subelements works as expected.
"""
is_extension = True
interfaces = set(('foo',))
plugin_attrib = 'foo'
def setup(self, xml):
# Don't include an XML element in the parent stanza
# since we're adding just an attribute.
# If adding a regular subelement, no need to do this.
self.xml = ET.Element('')
def set_foo(self, val):
self.parent()._set_attr('foo', val)
def get_foo(self):
return self.parent()._get_attr('foo')
def del_foo(self):
self.parent()._del_attr('foo')
register_stanza_plugin(Iq, Foo)
i1 = Iq()
i2 = Iq(xml=ET.fromstring("<iq xmlns='jabber:client' foo='bar' />"))
>>> i1['foo'] = '3'
>>> i1
'3'
>>> i1
'<iq id="0" foo="3" />'
>>> i2
'<iq id="0" foo="bar" />'
>>> i2['foo']
'bar'
>>> del i2['foo']
>>> i2
'<iq id="0" />'
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Support is only for adding literal XML content
to stanzas. Full support for things like multiple
message bodies with different xml:lang values is
still in the works.
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