Add: functions to_array, to_table, iterate

colddb.lua

@@ -270,6 +270,36 @@ function colddb.Colddb(dir)
 		db.set_async(async)
 		return db
 	end
+
+	self.to_array = function()
+		local entries = {}
+
+		for k, v in pairs(minetest.get_dir_list(directory)) do
+			entries[#entries + 1] = v:sub(0, v:len() - 5)
+		end
+
+		return entries
+	end
+
+	self.to_table = function()
+		local entries = {}
+
+		for k, v in pairs(minetest.get_dir_list(directory)) do
+			entries[v:sub(0, v:len() - 5)] = true
+		end
+
+		return entries
+	end
+
+	self.iterate = function()
+		local entries = {}
+
+		for k, v in pairs(minetest.get_dir_list(directory)) do
+			entries[v:sub(0, v:len() - 5)] = true
+		end
+
+		return pairs(entries)
+	end
 	
 	return self
 end