michael@0: /*
michael@0:  * $HeadURL$
michael@0:  * $Revision$
michael@0:  * $Date$
michael@0:  *
michael@0:  * ====================================================================
michael@0:  *
michael@0:  *  Licensed to the Apache Software Foundation (ASF) under one or more
michael@0:  *  contributor license agreements.  See the NOTICE file distributed with
michael@0:  *  this work for additional information regarding copyright ownership.
michael@0:  *  The ASF licenses this file to You under the Apache License, Version 2.0
michael@0:  *  (the "License"); you may not use this file except in compliance with
michael@0:  *  the License.  You may obtain a copy of the License at
michael@0:  *
michael@0:  *      http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  *  Unless required by applicable law or agreed to in writing, software
michael@0:  *  distributed under the License is distributed on an "AS IS" BASIS,
michael@0:  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
michael@0:  *  See the License for the specific language governing permissions and
michael@0:  *  limitations under the License.
michael@0:  * ====================================================================
michael@0:  *
michael@0:  * This software consists of voluntary contributions made by many
michael@0:  * individuals on behalf of the Apache Software Foundation.  For more
michael@0:  * information on the Apache Software Foundation, please see
michael@0:  * <http://www.apache.org/>.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: package ch.boye.httpclientandroidlib.client.utils;
michael@0: 
michael@0: import java.lang.reflect.InvocationTargetException;
michael@0: import java.lang.reflect.Method;
michael@0: 
michael@0: import ch.boye.httpclientandroidlib.annotation.Immutable;
michael@0: 
michael@0: /**
michael@0:  * Uses the java.net.IDN class through reflection.
michael@0:  *
michael@0:  * @since 4.0
michael@0:  */
michael@0: @Immutable
michael@0: public class JdkIdn implements Idn {
michael@0:     private final Method toUnicode;
michael@0: 
michael@0:     /**
michael@0:      *
michael@0:      * @throws ClassNotFoundException if java.net.IDN is not available
michael@0:      */
michael@0:     public JdkIdn() throws ClassNotFoundException {
michael@0:         Class<?> clazz = Class.forName("java.net.IDN");
michael@0:         try {
michael@0:             toUnicode = clazz.getMethod("toUnicode", String.class);
michael@0:         } catch (SecurityException e) {
michael@0:             // doesn't happen
michael@0:             throw new IllegalStateException(e.getMessage(), e);
michael@0:         } catch (NoSuchMethodException e) {
michael@0:             // doesn't happen
michael@0:             throw new IllegalStateException(e.getMessage(), e);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public String toUnicode(String punycode) {
michael@0:         try {
michael@0:             return (String) toUnicode.invoke(null, punycode);
michael@0:         } catch (IllegalAccessException e) {
michael@0:             throw new IllegalStateException(e.getMessage(), e);
michael@0:         } catch (InvocationTargetException e) {
michael@0:             Throwable t = e.getCause();
michael@0:             throw new RuntimeException(t.getMessage(), t);
michael@0:         }
michael@0:     }
michael@0: 
michael@0: }