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/**
* The FlashSerializer serializes JavaScript variables of types object, array, string,
* number, date, boolean, null or undefined into XML.
*/
/**
* Create a new instance of the FlashSerializer.
* useCdata: Whether strings should be treated as character data. If false, strings are simply XML encoded.
*/
function FlashSerializer(useCdata)
{
this.useCdata = useCdata;
}
/**
* Serialize an array into a format that can be deserialized in Flash. Supported data types are object,
* array, string, number, date, boolean, null, and undefined. Returns a string of serialized data.
*/
FlashSerializer.prototype.serialize = function(args)
{
var qs = new String();
for (var i = 0; i < args.length; ++i)
{
switch(typeof(args[i]))
{
case 'undefined':
qs += 't'+(i)+'=undf';
break;
case 'string':
qs += 't'+(i)+'=str&d'+(i)+'='+escape(args[i]);
break;
case 'number':
qs += 't'+(i)+'=num&d'+(i)+'='+escape(args[i]);
break;
case 'boolean':
qs += 't'+(i)+'=bool&d'+(i)+'='+escape(args[i]);
break;
case 'object':
if (args[i] == null)
{
qs += 't'+(i)+'=null';
}
else if (args[i] instanceof Date)
{
qs += 't'+(i)+'=date&d'+(i)+'='+escape(args[i].getTime());
}
else // array or object
{
try
{
qs += 't'+(i)+'=xser&d'+(i)+'='+escape(this._serializeXML(args[i]));
}
catch (exception)
{
throw new Exception("FlashSerializationException",
"The following error occurred during complex object serialization: " + exception.getMessage());
}
}
break;
default:
throw new Exception("FlashSerializationException",
"You can only serialize strings, numbers, booleans, dates, objects, arrays, nulls, and undefined.");
}
if (i != (args.length - 1))
{
qs += '&';
}
}
return qs;
}
/**
* Private
*/
FlashSerializer.prototype._serializeXML = function(obj)
{
var doc = new Object();
doc.xml = '<fp>';
this._serializeNode(obj, doc, null);
doc.xml += '</fp>';
return doc.xml;
}
/**
* Private
*/
FlashSerializer.prototype._serializeNode = function(obj, doc, name)
{
switch(typeof(obj))
{
case 'undefined':
doc.xml += '<undf'+this._addName(name)+'/>';
break;
case 'string':
doc.xml += '<str'+this._addName(name)+'>'+this._escapeXml(obj)+'</str>';
break;
case 'number':
doc.xml += '<num'+this._addName(name)+'>'+obj+'</num>';
break;
case 'boolean':
doc.xml += '<bool'+this._addName(name)+' val="'+obj+'"/>';
break;
case 'object':
if (obj == null)
{
doc.xml += '<null'+this._addName(name)+'/>';
}
else if (obj instanceof Date)
{
doc.xml += '<date'+this._addName(name)+'>'+obj.getTime()+'</date>';
}
else if (obj instanceof Array)
{
doc.xml += '<array'+this._addName(name)+'>';
for (var i = 0; i < obj.length; ++i)
{
this._serializeNode(obj[i], doc, null);
}
doc.xml += '</array>';
}
else
{
doc.xml += '<obj'+this._addName(name)+'>';
for (var n in obj)
{
if (typeof(obj[n]) == 'function')
continue;
this._serializeNode(obj[n], doc, n);
}
doc.xml += '</obj>';
}
break;
default:
throw new Exception("FlashSerializationException",
"You can only serialize strings, numbers, booleans, objects, dates, arrays, nulls and undefined");
break;
}
}
/**
* Private
*/
FlashSerializer.prototype._addName= function(name)
{
if (name != null)
{
return ' name="'+name+'"';
}
return '';
}
/**
* Private
*/
FlashSerializer.prototype._escapeXml = function(str)
{
if (this.useCdata)
return '<![CDATA['+str+']]>';
else
return str.replace(/&/g,'&').replace(/</g,'<');
}
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