X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=util%2Fserialization.lua;h=206f5fbbf59bda7766172dfb8cc6e3dceaf5c0a3;hb=a8958cbe5ebad3abc12efa7a76c8aedac8f21389;hp=07a099c910533cc1c95df93fc19fcb7a679dfda6;hpb=b8e41747b3923e960ab09a4b6b3df946ec36464f;p=prosody.git

diff --git a/util/serialization.lua b/util/serialization.lua
index 07a099c9..206f5fbb 100644
--- a/util/serialization.lua
+++ b/util/serialization.lua
@@ -1,7 +1,7 @@
 -- Prosody IM
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
--- 
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+--
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
 --
@@ -11,31 +11,40 @@ local type = type;
 local tostring = tostring;
 local t_insert = table.insert;
 local t_concat = table.concat;
-local error = error;
 local pairs = pairs;
 local next = next;
 
+local pcall = pcall;
+
 local debug_traceback = debug.traceback;
 local log = require "util.logger".init("serialization");
-module "serialization"
+local envload = require"util.envload".envload;
+
+local _ENV = nil;
 
 local indent = function(i)
 	return string_rep("\t", i);
 end
 local function basicSerialize (o)
 	if type(o) == "number" or type(o) == "boolean" then
-		return tostring(o);
+		-- no need to check for NaN, as that's not a valid table index
+		if o == 1/0 then return "(1/0)";
+		elseif o == -1/0 then return "(-1/0)";
+		else return tostring(o); end
 	else -- assume it is a string -- FIXME make sure it's a string. throw an error otherwise.
 		return (("%q"):format(tostring(o)):gsub("\\\n", "\\n"));
 	end
 end
 local function _simplesave(o, ind, t, func)
 	if type(o) == "number" then
-		func(t, tostring(o));
+		if o ~= o then func(t, "(0/0)");
+		elseif o == 1/0 then func(t, "(1/0)");
+		elseif o == -1/0 then func(t, "(-1/0)");
+		else func(t, tostring(o)); end
 	elseif type(o) == "string" then
 		func(t, (("%q"):format(o):gsub("\\\n", "\\n")));
 	elseif type(o) == "table" then
-		if next(o) then
+		if next(o) ~= nil then
 			func(t, "{\n");
 			for k,v in pairs(o) do
 				func(t, indent(ind));
@@ -62,17 +71,27 @@ local function _simplesave(o, ind, t, func)
 	end
 end
 
-function append(t, o)
+local function append(t, o)
 	_simplesave(o, 1, t, t.write or t_insert);
 	return t;
 end
 
-function serialize(o)
+local function serialize(o)
 	return t_concat(append({}, o));
 end
 
-function deserialize(str)
-	error("Not implemented");
+local function deserialize(str)
+	if type(str) ~= "string" then return nil; end
+	str = "return "..str;
+	local f, err = envload(str, "@data", {});
+	if not f then return nil, err; end
+	local success, ret = pcall(f);
+	if not success then return nil, ret; end
+	return ret;
 end
 
-return _M;
+return {
+	append = append;
+	serialize = serialize;
+	deserialize = deserialize;
+};