Tue, 03 Aug 2010 10:58:15 +0100
sessionmanager: Remove dependency on eventmanager
local st = require "util.stanza"; -- XML parser local parse_xml = (function() local entity_map = setmetatable({ ["amp"] = "&"; ["gt"] = ">"; ["lt"] = "<"; ["apos"] = "'"; ["quot"] = "\""; }, {__index = function(_, s) if s:sub(1,1) == "#" then if s:sub(2,2) == "x" then return string.char(tonumber(s:sub(3), 16)); else return string.char(tonumber(s:sub(2))); end end end }); local function xml_unescape(str) return (str:gsub("&(.-);", entity_map)); end local function parse_tag(s) local name,sattr=(s):gmatch("([^%s]+)(.*)")(); local attr = {}; for a,b in (sattr):gmatch("([^=%s]+)=['\"]([^'\"]*)['\"]") do attr[a] = xml_unescape(b); end return name, attr; end return function(xml) local stanza = st.stanza("root"); local regexp = "<([^>]*)>([^<]*)"; for elem, text in xml:gmatch(regexp) do if elem:sub(1,1) == "!" or elem:sub(1,1) == "?" then -- neglect comments and processing-instructions elseif elem:sub(1,1) == "/" then -- end tag elem = elem:sub(2); stanza:up(); -- TODO check for start-end tag name match elseif elem:sub(-1,-1) == "/" then -- empty tag elem = elem:sub(1,-2); local name,attr = parse_tag(elem); stanza:tag(name, attr):up(); else -- start tag local name,attr = parse_tag(elem); stanza:tag(name, attr); end if #text ~= 0 then -- text stanza:text(xml_unescape(text)); end end return stanza.tags[1]; end end)(); -- end of XML parser return parse_xml;