prosody
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util/xml.lua

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util/xml.lua @ 6108:aae7bc9d6e93

plugins/muc/muc: Add 'muc-occupant-left' event
author daurnimator <quae@daurnimator.com>
date Tue, 18 Mar 2014 18:52:28 -0400
parent 5776:bd0ff8ae98a8
child 6663:d3023dd07cb6
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cc487921746b util.xml: Initial commit; exposes parse(), which is now the canonical way to convert a string to a stanza.
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2 local st = require "util.stanza";
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3 local lxp = require "lxp";
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5 module("xml")
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7 local parse_xml = (function()
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8 local ns_prefixes = {
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9 ["http://www.w3.org/XML/1998/namespace"] = "xml";
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10 };
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11 local ns_separator = "\1";
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12 local ns_pattern = "^([^"..ns_separator.."]*)"..ns_separator.."?(.*)$";
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13 return function(xml)
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14 local handler = {};
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15 local stanza = st.stanza("root");
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16 function handler:StartElement(tagname, attr)
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17 local curr_ns,name = tagname:match(ns_pattern);
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18 if name == "" then
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19 curr_ns, name = "", curr_ns;
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20 end
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21 if curr_ns ~= "" then
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22 attr.xmlns = curr_ns;
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23 end
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24 for i=1,#attr do
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25 local k = attr[i];
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26 attr[i] = nil;
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27 local ns, nm = k:match(ns_pattern);
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28 if nm ~= "" then
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29 ns = ns_prefixes[ns];
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30 if ns then
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31 attr[ns..":"..nm] = attr[k];
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32 attr[k] = nil;
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33 end
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34 end
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35 end
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36 stanza:tag(name, attr);
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37 end
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38 function handler:CharacterData(data)
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39 stanza:text(data);
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40 end
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41 function handler:EndElement(tagname)
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42 stanza:up();
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43 end
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44 local parser = lxp.new(handler, "\1");
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45 local ok, err, line, col = parser:parse(xml);
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46 if ok then ok, err, line, col = parser:parse(); end
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47 --parser:close();
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48 if ok then
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49 return stanza.tags[1];
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50 else
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51 return ok, err.." (line "..line..", col "..col..")";
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52 end
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53 end;
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54 end)();
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55
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56 parse = parse_xml;
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57 return _M;