72 lines
2.7 KiB
Java
72 lines
2.7 KiB
Java
/*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with 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"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Initial Developer of the Original Code is Sun Microsystems,
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* Inc. Portions created by Sun are Copyright (C) 1999 Sun Microsystems,
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* Inc. All Rights Reserved.
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*/
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package org.mozilla.pluglet;
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import java.net.URLClassLoader;
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import java.net.URL;
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import java.util.jar.Manifest;
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import java.util.jar.Attributes;
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import java.io.InputStream;
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public class PlugletLoader {
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// path to jar file. Name of main class sould to be in MANIFEST.
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public static Pluglet getPluglet(String path) {
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try {
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org.mozilla.util.Debug.print("-- PlugletLoader.getPluglet("+path+")\n");
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URL url = new URL("file://"+path);
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URLClassLoader loader = URLClassLoader.newInstance(new URL[]{url});
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URL manifestURL = new URL("jar:file://"+path+"!/META-INF/MANIFEST.MF");
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InputStream inputStream = manifestURL.openStream();
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Manifest manifest = new Manifest(inputStream);
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Attributes attr = manifest.getMainAttributes();
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String plugletClassName = attr.getValue("Pluglet-Class");
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org.mozilla.util.Debug.print("-- PlugletLoader.getPluglet class name "+plugletClassName+"\n");
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org.mozilla.util.Debug.print("-- PL url[0] "+loader.getURLs()[0]);
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if (plugletClassName == null) {
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//nb
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return null;
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}
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Object pluglet = loader.loadClass(plugletClassName).newInstance();
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if (pluglet instanceof Pluglet) {
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return (Pluglet) pluglet;
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} else {
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return null;
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}
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} catch (Exception e) {
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org.mozilla.util.Debug.print("-- PlugletLoader.getPluglet exc "+e);
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return null;
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}
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}
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public static String getMIMEDescription(String path) {
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try {
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org.mozilla.util.Debug.print("-- PlugletLoader.getMIMEDescription("+path+")\n");
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URL manifestURL = new URL("jar:file://"+path+"!/META-INF/MANIFEST.MF");
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InputStream inputStream = manifestURL.openStream();
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Manifest manifest = new Manifest(inputStream);
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Attributes attr = manifest.getMainAttributes();
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String mimeDescription = attr.getValue("MIMEDescription");
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org.mozilla.util.Debug.print("-- PlugletLoader.getMIMEDescription desc "+mimeDescription+"\n");
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return mimeDescription;
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} catch (Exception e) {
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org.mozilla.util.Debug.print(e+"\n");
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return null;
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}
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}
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}
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