/*******************************************************************************
 *  myStorage.js, version 1.0.0
 *  (c) 2008 Sahid Ferdjaoui
 *
 *  myStorage.js is freely distributable under the terms of an GPL v3 license.
 *
 *******************************************************************************/

var myStorage = Class.create ({
    
    initialize: function () {
        this.Version = '1.0.0';
        this.h = new Hash ();
    },

    add: function (key, value, expire) {
        if (!expire)
            expire = 0;
        else
            expire += this.time ();

        if (this.get (key))
            return false;
        
        var atom = {'data':value, 'expire':expire};
        this.h.set (key, atom);
        return true;
    },

    set: function (key, value, expire) {
        if (!expire)
            expire = 0;
        else
            expire += this.time ();
        
        var atom = {'data':value, 'expire':expire};
        this.h.set (key, atom);
    },

    get: function (key) {
        var atom = this.h.get (key);
        if (!atom)
            return false;
        if (atom.expire < this.time ()) {
            this.h.unset (key);
            return false;
        }
        return atom.data;
    },

    del: function (key) {
        this.h.unset (key);
    },

    time: function () {
        return Math.floor ((new Date()).getTime() / 1000);
    }
    
});