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