prosody
39d83a43d473
plugins/storage/xmlparse.lib.lua

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plugins/storage/xmlparse.lib.lua @ 3816:39d83a43d473

mod_proxy65: Cleaned up stanza processing a little.
author Waqas Hussain <waqas20@gmail.com>
date Fri, 03 Dec 2010 00:22:11 +0500
parent 2678:c5882e2e12b5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2678
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
1
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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2 local st = require "util.stanza";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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3
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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4 -- XML parser
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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5 local parse_xml = (function()
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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6 local entity_map = setmetatable({
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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7 ["amp"] = "&";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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8 ["gt"] = ">";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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9 ["lt"] = "<";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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10 ["apos"] = "'";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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11 ["quot"] = "\"";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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12 }, {__index = function(_, s)
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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13 if s:sub(1,1) == "#" then
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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14 if s:sub(2,2) == "x" then
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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15 return string.char(tonumber(s:sub(3), 16));
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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16 else
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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17 return string.char(tonumber(s:sub(2)));
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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18 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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19 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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20 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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21 });
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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22 local function xml_unescape(str)
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
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23 return (str:gsub("&(.-);", entity_map));
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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24 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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25 local function parse_tag(s)
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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26 local name,sattr=(s):gmatch("([^%s]+)(.*)")();
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
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27 local attr = {};
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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28 for a,b in (sattr):gmatch("([^=%s]+)=['\"]([^'\"]*)['\"]") do attr[a] = xml_unescape(b); end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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29 return name, attr;
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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30 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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31 return function(xml)
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
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32 local stanza = st.stanza("root");
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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33 local regexp = "<([^>]*)>([^<]*)";
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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34 for elem, text in xml:gmatch(regexp) do
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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35 if elem:sub(1,1) == "!" or elem:sub(1,1) == "?" then -- neglect comments and processing-instructions
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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36 elseif elem:sub(1,1) == "/" then -- end tag
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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37 elem = elem:sub(2);
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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38 stanza:up(); -- TODO check for start-end tag name match
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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39 elseif elem:sub(-1,-1) == "/" then -- empty tag
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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40 elem = elem:sub(1,-2);
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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41 local name,attr = parse_tag(elem);
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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42 stanza:tag(name, attr):up();
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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43 else -- start tag
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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44 local name,attr = parse_tag(elem);
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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45 stanza:tag(name, attr);
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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46 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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47 if #text ~= 0 then -- text
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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48 stanza:text(xml_unescape(text));
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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49 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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50 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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51 return stanza.tags[1];
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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52 end
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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53 end)();
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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54 -- end of XML parser
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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55
c5882e2e12b5 mod_storage, plus a bit of SQL and XML.
Waqas Hussain <waqas20@gmail.com>
parents:
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56 return parse_xml;