1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * @(#)$Id: EncoderFactory.java,v 1.3 2005/09/10 19:07:33 kohsuke Exp $
  28  */
  29 package com.sun.codemodel.internal.util;
  30 
  31 import java.lang.reflect.Constructor;
  32 import java.nio.charset.Charset;
  33 import java.nio.charset.CharsetEncoder;
  34 
  35 /**
  36  * Creates {@link CharsetEncoder} from a charset name.
  37  *
  38  * Fixes a MS1252 handling bug in JDK1.4.2.
  39  *
  40  * @author
  41  *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
  42  */
  43 public class EncoderFactory {
  44 
  45         public static CharsetEncoder createEncoder( String encodin ) {
  46         Charset cs = Charset.forName(System.getProperty("file.encoding"));
  47         CharsetEncoder encoder = cs.newEncoder();
  48 
  49         if( cs.getClass().getName().equals("sun.nio.cs.MS1252") ) {
  50             try {
  51                 // at least JDK1.4.2_01 has a bug in MS1252 encoder.
  52                 // specifically, it returns true for any character.
  53                 // return a correct encoder to workaround this problem
  54 
  55                 // statically binding to MS1252Encoder will cause a Link error
  56                 // (at least in IBM JDK1.4.1)
  57                 @SuppressWarnings("unchecked")
  58                 Class<? extends CharsetEncoder> ms1252encoder = (Class<? extends CharsetEncoder>) Class.forName("com.sun.codemodel.internal.util.MS1252Encoder");
  59                 Constructor<? extends CharsetEncoder> c = ms1252encoder.getConstructor(new Class[]{
  60                     Charset.class
  61                 });
  62                 return c.newInstance(new Object[]{cs});
  63             } catch( Throwable t ) {
  64                 // if something funny happens, ignore it and fall back to
  65                 // a broken MS1252 encoder. It's probably still better
  66                 // than choking here.
  67                 return encoder;
  68             }
  69         }
  70 
  71         return encoder;
  72     }
  73 }