INTEGRATION: CWS sb31 (1.1.2); FILE ADDED

2005/05/03 12:28:35 sb 1.1.2.2: #121392# Excluded jut.jar from URE.
2005/04/29 10:25:09 sb 1.1.2.1: #120220# Generate javadoc for unoloader.jar; this required some files to be moved from source/unoloader to source/unoloader/com/sun/star/lib/unoloader.

1 files changed, 233 insertions, 0 deletions

diff --git a/ridljar/source/unoloader/com/sun/star/lib/unoloader/UnoClassLoader.java b/ridljar/source/unoloader/com/sun/star/lib/unoloader/UnoClassLoader.java
new file mode 100644
index 000000000000..b47a6b7502eb
--- /dev/null
+++ b/ridljar/source/unoloader/com/sun/star/lib/unoloader/UnoClassLoader.java
@@ -0,0 +1,233 @@
+/*************************************************************************
+ *
+ *  $RCSfile: UnoClassLoader.java,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: obo $ $Date: 2005-06-17 09:44:36 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source 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.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2005 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+package com.sun.star.lib.unoloader;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.jar.Attributes;
+import java.util.jar.Manifest;
+import java.util.jar.JarInputStream;
+
+/**
+ * The root UNO class loader.
+ *
+ * <p>This class loader is able to load all published URE classes, including the
+ * classes representing the published URE UNO types.  For consistency, it is
+ * important that within each Java UNO environment there is one instance of this
+ * class loader that is the defining class loader of all published URE classes
+ * (and hence of all unpublished URE classes, too) and of all classes
+ * representing UNO types (the published URE UNO types, any unpublished URE UNO
+ * types, and any additional UNO types introduced by components; for the latter,
+ * {@link #addURL} may be necessary).</p>
+ *
+ * <p><em>This is an internal, unstable class of the Uno Runtime Environment; it
+ * should not be used by client code.</em></p>
+ *
+ * @since UDK 3.2.1
+ */
+public final class UnoClassLoader extends URLClassLoader {
+    /**
+     * Instantiates the root UNO class loader.
+     *
+     * @param base a base URL relative to which the URE JARs
+     * (<code>java_uno.jar</code>, <code>juh.jar</code>, <code>jurt.jar</code>,
+     * <code>ridl.jar</code>) can be found; must not be <code>null</code>.
+     *
+     * @param parent the parent class loader for delegation.
+     *
+     * @throws MalformedURLException if the given <code>base</code> URL is
+     * malformed.
+     */
+    public UnoClassLoader(URL base, ClassLoader parent)
+        throws MalformedURLException
+    {
+        //TODO  Get rid of java_uno.jar here:
+        super(
+            new URL[] {
+                new URL(base, "java_uno.jar"), new URL(base, "juh.jar"),
+                new URL(base, "jurt.jar"), new URL(base, "ridl.jar") },
+            parent);
+    }
+
+    /**
+     * Obtains a class loader for a UNO JAR.
+     *
+     * @param jar the URL of a UNO JAR; must not be <code>null</code>.
+     *
+     * @param mainAttributes represents the main section of the manifest of the
+     * given JAR <code>jar</code>; <code>null</code> if the given JAR does not
+     * have a manifest.  (This redundant parameter is there for performance
+     * reasons, as typically the caller of this method already has this
+     * information available.)
+     *
+     * @return an appropriate class loader; will never be <code>null</code>.
+     *
+     * @throws MalformedURLException if the given <code>jar</code> URL or any of
+     * the UNO-Type-Path URLs specified in the given JAR are malformed.
+     */
+    public ClassLoader getClassLoader(URL jar, Attributes mainAttributes)
+        throws MalformedURLException
+    {
+        String path = mainAttributes == null ?
+            null : mainAttributes.getValue("UNO-Type-Path");
+        if (path == null) {
+            path = "<>";
+        }
+        for (int i = 0; i < path.length();) {
+            while (i < path.length() && path.charAt(i) == ' ') {
+                ++i;
+            }
+            if (i < path.length()) {
+                String url;
+                if (path.charAt(i) == '<') {
+                    int j = path.indexOf('>', i + 1);
+                    if (j < 0) {
+                        url = path.substring(i + 1);
+                        i = path.length();
+                    } else {
+                        url = path.substring(i + 1, j);
+                        i = j + 1;
+                    }
+                } else {
+                    int j = path.indexOf(' ', i + 1);
+                    if (j < 0) {
+                        j = path.length();
+                    }
+                    url = path.substring(i, j);
+                    i = j;
+                }
+                addURL(new URL(jar, url));
+            }
+        }
+        return URLClassLoader.newInstance(new URL[] { jar }, this);
+    }
+
+    /**
+     * Executes a UNO JAR.
+     *
+     * @param jar the URL of a UNO JAR that specifies a Main-Class; must not be
+     * <code>null</code>.
+     *
+     * @param arguments any arguments passed to the <code>main</code> method of
+     * the specified Main-Class of the given JAR <code>jar</code>; must not be
+     * <code>null</code>.
+     *
+     * @throws IOException if there are any problems processing the given JAR
+     * <code>jar</code>.
+     *
+     * @throws ClassNotFoundException if the given JAR <code>jar</code> does not
+     * specify a Main-Class, or if the specified Main-Class cannot be found.
+     *
+     * @throws NoSuchMethodException if the specified Main-Class of the given
+     * JAR <code>jar</code> does not have an appropriate <code>main</code>
+     * method.
+     *
+     * @throws InvocationTargetException if an exception occurs while executing
+     * the <code>main</code> method of the specified Main-Class of the given JAR
+     * <code>jar</code>.
+     */
+    public void execute(URL jar, String[] arguments)
+        throws IOException, ClassNotFoundException, NoSuchMethodException,
+        InvocationTargetException
+    {
+        Attributes attr = getJarMainAttributes(jar);
+        String name = attr == null
+            ? null : attr.getValue(Attributes.Name.MAIN_CLASS);
+        if (name == null) {
+            throw new ClassNotFoundException(
+                jar + " does not specify a main class");
+        }
+        try {
+            getClassLoader(jar, attr).loadClass(name.replace('/', '.')).
+                getMethod("main", new Class[] { String[].class }).
+                invoke(null, new Object[] { arguments });
+        } catch (IllegalAccessException e) {
+            throw new RuntimeException("impossible " + e);
+        }
+    }
+
+    /**
+     * Obtains the main section of the manifest of a JAR.
+     *
+     * @param jar the URL of a JAR; must not be <code>null</code>.
+     *
+     * @return the representation of the main section of the manifest of the
+     * given JAR <code>jar</code>, or <code>null</code> if the given JAR does
+     * not have a manifest.
+     *
+     * @throws IOException if there are any problems processing the given JAR
+     * <code>jar</code>.
+     */
+    public static Attributes getJarMainAttributes(URL jar) throws IOException {
+        JarInputStream s = new JarInputStream(jar.openStream());
+        Manifest mf;
+        try {
+            mf = s.getManifest();
+        } finally {
+            s.close();
+        }
+        return mf == null ? null : mf.getMainAttributes();
+    }
+}