Imported GNU Classpath 0.90

Imported GNU Classpath 0.90
       * scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore.
       * gnu/classpath/jdwp/VMFrame.java (SIZE): New constant.
       * java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5.
       * java/lang/Math.java: New override file.
       * java/lang/Character.java: Merged from Classpath.
       (start, end): Now 'int's.
       (canonicalName): New field.
       (CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants.
       (UnicodeBlock): Added argument.
       (of): New overload.
       (forName): New method.
       Updated unicode blocks.
       (sets): Updated.
       * sources.am: Regenerated.
       * Makefile.in: Likewise.

From-SVN: r111942

libjava/classpath/gnu/java/security/key/KeyPairGeneratorFactory.java

@@ -0,0 +1,148 @@
+/* KeyPairGeneratorFactory.java -- 
+   Copyright 2001, 2002, 2003, 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath 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
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version.  */
+
+
+package gnu.java.security.key;
+
+import gnu.java.security.Registry;
+import gnu.java.security.key.dss.DSSKeyPairGenerator;
+import gnu.java.security.key.rsa.RSAKeyPairGenerator;
+
+import java.lang.reflect.Constructor;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * <p>A Factory to instantiate asymmetric keypair generators.</p>
+ *
+ * @version $Revision: 1.1 $
+ */
+public class KeyPairGeneratorFactory
+{
+
+  // Constants and variables
+  // -------------------------------------------------------------------------
+
+  // Constructor(s)
+  // -------------------------------------------------------------------------
+
+  /** Trivial constructor to enforce Singleton pattern. */
+  private KeyPairGeneratorFactory()
+  {
+    super();
+  }
+
+  // Class methods
+  // -------------------------------------------------------------------------
+
+  /**
+   * <p>Returns an instance of a keypair generator given its name.</p>
+   *
+   * @param name the case-insensitive key generator name.
+   * @return an instance of the keypair generator, or <code>null</code> if none
+   * found.
+   */
+  public static IKeyPairGenerator getInstance(String name)
+  {
+    if (name == null)
+      {
+        return null;
+      }
+
+    name = name.trim();
+    IKeyPairGenerator result = null;
+    if (name.equalsIgnoreCase(Registry.DSA_KPG)
+        || name.equals(Registry.DSS_KPG))
+      {
+        result = new DSSKeyPairGenerator();
+      }
+    else if (name.equalsIgnoreCase(Registry.RSA_KPG))
+      {
+        result = new RSAKeyPairGenerator();
+      }
+    else if (name.equalsIgnoreCase(Registry.DH_KPG))
+      {
+        result = makeInstance ("gnu.javax.crypto.key.dh.GnuDHKeyPairGenerator");
+      }
+    else if (name.equalsIgnoreCase(Registry.SRP_KPG))
+      {
+        result = makeInstance ("gnu.javax.crypto.key.srp6.SRPKeyPairGenerator");
+      }
+
+    return result;
+  }
+
+  /**
+   * <p>Returns a {@link Set} of keypair generator names supported by this
+   * <i>Factory</i>. Those keypair generators may be used in conjunction with
+   * the digital signature schemes with appendix supported by this library.</p>
+   *
+   * @return a {@link Set} of keypair generator names (Strings).
+   */
+  public static final Set getNames()
+  {
+    HashSet hs = new HashSet();
+    hs.add(Registry.DSS_KPG);
+    hs.add(Registry.RSA_KPG);
+    hs.add(Registry.DH_KPG);
+    hs.add(Registry.SRP_KPG);
+
+    return Collections.unmodifiableSet(hs);
+  }
+
+  private static IKeyPairGenerator makeInstance (String clazz)
+  {
+    try
+      {
+        Class c = Class.forName (clazz);
+        Constructor ctor = c.getConstructor (new Class[0]);
+        return (IKeyPairGenerator) ctor.newInstance (new Object[0]);
+      }
+    catch (Exception x)
+      {
+        IllegalArgumentException iae =
+          new IllegalArgumentException ("strong crypto key pair generator not available: "
+                                        + clazz);
+        iae.initCause (x);
+        throw iae;
+      }
+  }
+
+  // Instance methods
+  // -------------------------------------------------------------------------
+}