Merge branch 'xep-0335' into 'master'

Add xep_0335: JSON Containers

See merge request poezio/slixmpp!5

slixmpp/plugins/xep_0335/__init__.py

+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2018 Maxime “pep” Buquet
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.plugins.base import register_plugin
+
+from slixmpp.plugins.xep_0335.stanza import JSON_Container
+from slixmpp.plugins.xep_0335.json_containers import XEP_0335
+
+register_plugin(XEP_0335)

slixmpp/plugins/xep_0335/json_containers.py

+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2018 Maxime “pep” Buquet
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp import Message
+from slixmpp.plugins import BasePlugin
+from slixmpp.xmlstream import register_stanza_plugin
+from slixmpp.plugins.xep_0335 import JSON_Container
+
+
+class XEP_0335(BasePlugin):
+
+    name = 'xep_0335'
+    description = 'XEP-0335: JSON Containers'
+    stanza = stanza
+
+    def plugin_init(self):
+        register_stanza_plugin(Message, JSON_Container)

slixmpp/plugins/xep_0335/stanza.py

+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2018 Maxime “pep” Buquet
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+import json
+from slixmpp.xmlstream import ElementBase
+
+
+class JSON_Container(ElementBase):
+    name = 'json'
+    plugin_attrib = 'json'
+    namespace = 'urn:xmpp:json:0'
+    interfaces = {'value'}
+
+    def get_value(self):
+        return json.loads(self.xml.text)
+
+    def set_value(self, value):
+        if not isinstance(value, str):
+            value = json.dumps(value)
+        self.xml.text = value
+
+    def del_value(self):
+        self.xml.text = ''