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from xml.etree import cElementTree as ET
class StanzaBase(object):
name = 'stanza'
namespace = 'jabber:client'
interfaces = set(('type', 'to', 'from', 'id', 'payload'))
types = set(('get', 'set', 'error', None, 'unavailable', 'normal', 'chat'))
sub_interfaces = tuple()
def __init__(self, stream, xml=None, stype=None, sto=None, sfrom=None, sid=None):
self.stream = stream
self.xml = xml
if xml is None:
self.xml = ET.Element("{%(namespace)s}%(name)s" % {'name': self.name, 'namespace': self.namespace})
if stype is not None:
self['type'] = stype
if sto is not None:
self['to'] = sto
if sfrom is not None:
self['from'] = sfrom
self.tag = "{%s}%s" % (self.stream.default_ns, self.name)
def match(self, xml):
return xml.tag == self.tag
def __getitem__(self, attrib):
if attrib in self.interfaces:
if hasattr(self, "get%s" % attrib.title()):
return getattr(self, "get%s" % attrib.title())()
else:
if attrib in self.sub_interfaces:
return self._getSubText(attrib)
else:
return self._getAttr(attrib)
else:
return ''
def __setitem__(self, attrib, value):
if attrib.lower() in self.interfaces:
if value is not None:
if hasattr(self, "set%s" % attrib.title()):
getattr(self, "set%s" % attrib.title())(value,)
else:
if attrib in self.sub_interfaces:
return self._setSubText(attrib, text=value)
else:
self._setAttr(attrib, value)
else:
self.__delitem__(attrib)
return self
def __delitem__(self, attrib):
if attrib.lower() in self.interfaces:
if hasattr(self, "del%s" % attrib.title()):
getattr(self, "del%s" % attrib.title())()
else:
if attrib in self.sub_interfaces:
return self._delSub(attrib)
else:
self._delAttr(attrib)
return self
def setType(self, value):
if value in self.types:
if value is None and 'type' in self.xml.attrib:
del self.xml.attrib['type']
elif value is not None:
self.xml.attrib['type'] = value
else:
raise ValueError
return self
def getPayload(self):
return self.xml.getchildren()
def setPayload(self, value):
self.xml.append(value)
def delPayload(self):
self.clear()
def clear(self):
for child in self.xml.getchildren():
self.xml.remove(child)
def reply(self):
self['from'], self['to'] = self['to'], self['from']
return self
def error(self):
self['type'] = 'error'
def _setAttr(self, name, value):
self.xml.attrib[name] = value
def _delAttr(self, name):
if name in self.xml.attrib:
del self.xml.attrib[name]
def _getAttr(self, name):
return self.xml.attrib.get(name, '')
def _getSubText(self, name):
stanza = self.xml.find("{%s}%s" % (self.namespace, name))
if stanza is None or stanza.text is None:
return ''
else:
return stanza.text
def _setSubText(self, name, attrib={}, text=None):
stanza = self.xml.find("{%s}%s" % (self.namespace, name))
if stanza is None:
self.xml.append(ET.Element("{%s}%s" % (self.namespace, name), attrib))
stanza = self.xml.find("{%s}%s" % (self.namespace, name))
if text is not None:
stanza.text = text
return stanza
def _delSub(self, name):
for child in self.xml.getchildren():
if child.tag == "{%s}%s" % (self.namespace, name):
self.xml.remove(child)
def unhandled(self):
pass
def send(self):
self.stream.sendRaw(str(self))
def __str__(self, xml=None, xmlns='', stringbuffer=''):
if xml is None:
xml = self.xml
newoutput = [stringbuffer]
#TODO respect ET mapped namespaces
itag = xml.tag.split('}', 1)[-1]
if '}' in xml.tag:
ixmlns = xml.tag.split('}', 1)[0][1:]
else:
ixmlns = ''
nsbuffer = ''
#if xmlns != ixmlns and ixmlns != '':
# if ixmlns in self.namespace_map:
# if self.namespace_map[ixmlns] != '':
# itag = "%s:%s" % (self.namespace_map[ixmlns], itag)
# else:
# nsbuffer = """ xmlns="%s\"""" % ixmlns
if ixmlns not in (xmlns, self.namespace):
nsbuffer = """ xmlns="%s\"""" % ixmlns
newoutput.append("<%s" % itag)
newoutput.append(nsbuffer)
for attrib in xml.attrib:
newoutput.append(""" %s="%s\"""" % (attrib, self.xmlesc(xml.attrib[attrib])))
if len(xml) or xml.text or xml.tail:
newoutput.append(">")
if xml.text:
newoutput.append(self.xmlesc(xml.text))
if len(xml):
for child in xml.getchildren():
newoutput.append(self.__str__(child, ixmlns))
newoutput.append("</%s>" % (itag, ))
if xml.tail:
newoutput.append(self.xmlesc(xml.tail))
elif xml.text:
newoutput.append(">%s</%s>" % (self.xmlesc(xml.text), itag))
else:
newoutput.append(" />")
return ''.join(newoutput)
def xmlesc(self, text):
text = list(text)
cc = 0
matches = ('&', '<', '"', '>', "'")
for c in text:
if c in matches:
if c == '&':
text[cc] = '&'
elif c == '<':
text[cc] = '<'
elif c == '>':
text[cc] = '>'
elif c == "'":
text[cc] = '''
elif self.escape_quotes:
text[cc] = '"'
cc += 1
return ''.join(text)
if __name__ == '__main__':
x = Stanza()
x['from'] = 'you'
x['to'] = 'me'
print(x['from'], x['to'])
x.reply()
print(x['from'], x['to'])
x['from'] = None
print(x['from'], x['to'])
print(str(x))
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