* luci/libs: util: further enhancements to table serialisation

diff --git a/libs/core/luasrc/util.lua b/libs/core/luasrc/util.lua
index 2a7e704..bf463ae 100644 (file)
--- a/libs/core/luasrc/util.lua
+++ b/libs/core/luasrc/util.lua
@@ -436,20 +436,27 @@ function _serialize_table(t, seen)
        assert(not seen[t], "Recursion detected.")
        seen[t] = true
        
-       local data = ""
-       for i = 1, #t do
-               local v = serialize_data(t[i], seen)
-               data = data .. ( #data > 0 and ", " or "" ) .. v
-       end
+       local data  = ""
+       local idata = ""
+       local ilen  = 0
+
        for k, v in pairs(t) do
-               if type(k) ~= "number" then
+               if type(k) ~= "number" or k < 1 or math.floor(k) ~= k or ( k - #t ) > 3 then
                        k = serialize_data(k, seen)
                        v = serialize_data(v, seen)
                        data = data .. ( #data > 0 and ", " or "" ) ..
                                '[' .. k .. '] = ' .. v
+               elseif k > ilen then
+                       ilen = k
                end
        end
-       return data
+
+       for i = 1, ilen do
+               local v = serialize_data(t[i], seen)
+               idata = idata .. ( #idata > 0 and ", " or "" ) .. v
+       end             
+
+       return idata .. ( #data > 0 and ", " or "" ) .. data
 end
 
 --- Recursively serialize given data to lua code, suitable for restoring