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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino serialization code, released
* Sept. 25, 2001.
*
* The Initial Developer of the Original Code is
* Norris Boyd.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Norris Boyd
* Igor Bukanov
* Attila Szegedi
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
// API class
package org.mozilla.javascript.serialize;
import java.io.*;
import org.mozilla.javascript.*;
/**
* Class ScriptableInputStream is used to read in a JavaScript
* object or function previously serialized with a ScriptableOutputStream.
* References to names in the exclusion list
* replaced with references to the top-level scope specified during
* creation of the ScriptableInputStream.
*
* @author Norris Boyd
*/
public class ScriptableInputStream extends ObjectInputStream {
/**
* Create a ScriptableInputStream.
* @param in the InputStream to read from.
* @param scope the top-level scope to create the object in.
*/
public ScriptableInputStream(InputStream in, Scriptable scope)
throws IOException
{
super(in);
this.scope = scope;
enableResolveObject(true);
Context cx = Context.getCurrentContext();
if (cx != null) {
this.classLoader = cx.getApplicationClassLoader();
}
}
protected Class resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException
{
String name = desc.getName();
if (classLoader != null) {
try {
return classLoader.loadClass(name);
} catch (ClassNotFoundException ex) {
// fall through to default loading
}
}
return super.resolveClass(desc);
}
protected Object resolveObject(Object obj)
throws IOException
{
if (obj instanceof ScriptableOutputStream.PendingLookup) {
String name = ((ScriptableOutputStream.PendingLookup)obj).getName();
obj = ScriptableOutputStream.lookupQualifiedName(scope, name);
if (obj == Scriptable.NOT_FOUND) {
throw new IOException("Object " + name + " not found upon " +
"deserialization.");
}
}else if (obj instanceof UniqueTag) {
obj = ((UniqueTag)obj).readResolve();
}else if (obj instanceof Undefined) {
obj = ((Undefined)obj).readResolve();
}
return obj;
}
private Scriptable scope;
private ClassLoader classLoader;
}
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