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util.stanza, util.xml, util.xmppstream: Add support for tracking defined namespaces and their prefix (stanza.namespaces), knowing/preserving prefix names is required for some applications (thanks daurnimator)

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This commit is contained in:
Matthew Wild 2015-12-08 23:15:42 +00:00
parent bb0ad8d2a9
commit dd37beeff9
3 changed files with 49 additions and 6 deletions
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23
util/xmppstream.lua
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@ -196,6 +196,29 @@ local function new_sax_handlers(session, stream_callbacks, cb_handleprogress)
end
end
if stream_callbacks.track_namespaces then
local namespaces = {}
function xml_handlers:StartNamespaceDecl(prefix, url)
if prefix ~= nil then
namespaces[prefix] = url
end
end
function xml_handlers:EndNamespaceDecl(prefix)
if prefix ~= nil then
namespaces[prefix] = nil
end
end
local old_startelement = xml_handlers.StartElement
function xml_handlers:StartElement(tagname, attr)
old_startelement(self, tagname, attr)
local n = {}
for prefix, url in pairs(namespaces) do
n[prefix] = url
end
stanza.namespaces = n
end
end
local function restricted_handler(parser)
cb_error(session, "parse-error", "restricted-xml", "Restricted XML, see RFC 6120 section 11.1.");
if not parser.stop or not parser:stop() then