Mercurial > lua-ical / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ical.lua	Mon Oct 26 03:12:41 2009 +0000
@@ -0,0 +1,46 @@
+module("ical", package.seeall)
+
+local handler = {};
+
+function handler.VEVENT(ical, line)
+	local k,v = line:match("^(%w+):(.*)$");
+	local curr_event = ical[#ical];
+	if k and v then
+		curr_event[k] = v;
+	end
+	
+	if k == "DTSTAMP" then
+		local t = {};
+		t.year, t.month, t.day, t.hour, t.min, t.sec = v:match("^(%d%d%d%d)(%d%d)(%d%d)T(%d%d)(%d%d)(%d%d)Z$");
+		for k,v in pairs(t) do t[k] = tonumber(v); end
+		curr_event.when = os.time(t);
+	end
+end
+
+function load(data)
+	local ical, stack = {}, {};
+	local line_num = 0;
+	
+	-- Parse
+	for line in data:gmatch("(.-)[\r\n]+") do
+		line_num = line_num + 1;
+		if line:match("^BEGIN:") then
+			local type = line:match("^BEGIN:(%S+)");
+			table.insert(stack, type);
+			table.insert(ical, { type = type }); 
+		elseif line:match("^END:") then
+			if stack[#stack] ~= line:match("^END:(%S+)") then
+				return nil, "Parsing error, expected END:"..stack[#stack].." before line "..line_num;
+			end
+			table.remove(stack);
+		elseif handler[stack[#stack]] then
+			handler[stack[#stack]](ical, line);
+		end
+	end
+	
+	-- Return calendar
+	return ical;
+end
+
+
+return _M;