mirror of
https://github.com/correl/SleekXMPP.git
synced 2024-11-24 19:19:56 +00:00
131 lines
4 KiB
Python
131 lines
4 KiB
Python
"""
|
|
SleekXMPP: The Sleek XMPP Library
|
|
Copyright (C) 2010 Nathanael C. Fritz, Erik Reuterborg Larsson
|
|
This file is part of SleekXMPP.
|
|
|
|
See the file LICENSE for copying permission.
|
|
"""
|
|
|
|
import logging
|
|
|
|
import sleekxmpp
|
|
from sleekxmpp import Iq
|
|
from sleekxmpp.plugins.base import base_plugin
|
|
from sleekxmpp.xmlstream import register_stanza_plugin
|
|
from sleekxmpp.plugins.xep_0059 import Set
|
|
from sleekxmpp.exceptions import XMPPError
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class ResultIterator():
|
|
|
|
"""
|
|
An iterator for Result Set Managment
|
|
"""
|
|
|
|
def __init__(self, query, interface, amount=10, start=None, reverse=False):
|
|
"""
|
|
Arguments:
|
|
query -- The template query
|
|
interface -- The substanza of the query, for example disco_items
|
|
amount -- The max amounts of items to request per iteration
|
|
start -- From which item id to start
|
|
reverse -- If True, page backwards through the results
|
|
|
|
Example:
|
|
q = Iq()
|
|
q['to'] = 'pubsub.example.com'
|
|
q['disco_items']['node'] = 'blog'
|
|
for i in ResultIterator(q, 'disco_items', '10'):
|
|
print i['disco_items']['items']
|
|
|
|
"""
|
|
self.query = query
|
|
self.amount = amount
|
|
self.start = start
|
|
self.interface = interface
|
|
self.reverse = reverse
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def __next__(self):
|
|
return self.next()
|
|
|
|
def next(self):
|
|
"""
|
|
Return the next page of results from a query.
|
|
|
|
Note: If using backwards paging, then the next page of
|
|
results will be the items before the current page
|
|
of items.
|
|
"""
|
|
self.query[self.interface]['rsm']['before'] = self.reverse
|
|
self.query['id'] = self.query.stream.new_id()
|
|
self.query[self.interface]['rsm']['max'] = str(self.amount)
|
|
|
|
if self.start and self.reverse:
|
|
self.query[self.interface]['rsm']['before'] = self.start
|
|
elif self.start:
|
|
self.query[self.interface]['rsm']['after'] = self.start
|
|
|
|
try:
|
|
r = self.query.send(block=True)
|
|
|
|
if not r[self.interface]['rsm']['first'] and \
|
|
not r[self.interface]['rsm']['last']:
|
|
raise StopIteration
|
|
|
|
if r[self.interface]['rsm']['count'] and \
|
|
r[self.interface]['rsm']['first_index']:
|
|
count = int(r[self.interface]['rsm']['count'])
|
|
first = int(r[self.interface]['rsm']['first_index'])
|
|
num_items = len(r[self.interface]['substanzas'])
|
|
if first + num_items == count:
|
|
raise StopIteration
|
|
|
|
if self.reverse:
|
|
self.start = r[self.interface]['rsm']['first']
|
|
else:
|
|
self.start = r[self.interface]['rsm']['last']
|
|
|
|
return r
|
|
except XMPPError:
|
|
raise StopIteration
|
|
|
|
|
|
class xep_0059(base_plugin):
|
|
|
|
"""
|
|
XEP-0050: Result Set Management
|
|
"""
|
|
|
|
def plugin_init(self):
|
|
"""
|
|
Start the XEP-0059 plugin.
|
|
"""
|
|
self.xep = '0059'
|
|
self.description = 'Result Set Management'
|
|
self.stanza = sleekxmpp.plugins.xep_0059.stanza
|
|
|
|
def post_init(self):
|
|
"""Handle inter-plugin dependencies."""
|
|
base_plugin.post_init(self)
|
|
self.xmpp['xep_0030'].add_feature(Set.namespace)
|
|
|
|
def iterate(self, stanza, interface):
|
|
"""
|
|
Create a new result set iterator for a given stanza query.
|
|
|
|
Arguments:
|
|
stanza -- A stanza object to serve as a template for
|
|
queries made each iteration. For example, a
|
|
basic disco#items query.
|
|
interface -- The name of the substanza to which the
|
|
result set management stanza should be
|
|
appended. For example, for disco#items queries
|
|
the interface 'disco_items' should be used.
|
|
"""
|
|
return ResultIterator(stanza, interface)
|