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# Copyright (C) 2020 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# SPDX-License-Identifier: GPL-3.0-or-later
from nbxmpp.namespaces import Namespace
from nbxmpp.protocol import Node
from nbxmpp.structs import RSMData
def parse_rsm(stanza: Node) -> RSMData | None:
stanza = stanza.getTag("set", namespace=Namespace.RSM)
if stanza is None:
return None
after = stanza.getTagData("after") or None
before = stanza.getTagData("before") or None
last = stanza.getTagData("last") or None
first_index = None
first = stanza.getTagData("first") or None
if first is not None:
try:
first_index = int(first.getAttr("index"))
except Exception:
pass
try:
count = int(stanza.getTagData("count"))
except Exception:
count = None
try:
max_ = int(stanza.getTagData("max"))
except Exception:
max_ = None
try:
index = int(stanza.getTagData("index"))
except Exception:
index = None
return RSMData(
after=after,
before=before,
last=last,
first=first,
first_index=first_index,
count=count,
max=max_,
index=index,
)
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