001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 /*
019 * This code has been borrowed from the Apache Xerces project. We're copying the code to
020 * keep from adding a dependency on Xerces in the Geronimo kernel.
021 */
022
023 package org.apache.geronimo.system.configuration;
024
025 import java.io.OutputStream;
026 import java.io.OutputStreamWriter;
027 import java.io.UnsupportedEncodingException;
028 import java.io.Writer;
029
030 /**
031 * This class represents an encoding.
032 *
033 * @version $Id: EncodingInfo.java 482336 2006-12-04 20:12:19Z kevan $
034 */
035 public class EncodingInfo {
036
037 String name;
038 String javaName;
039 int lastPrintable;
040
041 /**
042 * Creates new <code>EncodingInfo</code> instance.
043 */
044 public EncodingInfo(String mimeName, String javaName, int lastPrintable) {
045 this.name = mimeName;
046 this.javaName = javaName == null ? mimeName : javaName;
047 this.lastPrintable = lastPrintable;
048 }
049
050 /**
051 * Creates new <code>EncodingInfo</code> instance.
052 */
053 public EncodingInfo(String mimeName, int lastPrintable) {
054 this(mimeName, mimeName, lastPrintable);
055 }
056
057 /**
058 * Returns a MIME charset name of this encoding.
059 */
060 public String getName() {
061 return this.name;
062 }
063
064 /**
065 * Returns a writer for this encoding based on
066 * an output stream.
067 *
068 * @return A suitable writer
069 * @exception UnsupportedEncodingException There is no convertor
070 * to support this encoding
071 */
072 public Writer getWriter(OutputStream output)
073 throws UnsupportedEncodingException {
074 if (this.javaName == null)
075 return new OutputStreamWriter(output);
076 return new OutputStreamWriter(output, this.javaName);
077 }
078 /**
079 * Checks whether the specified character is printable or not.
080 *
081 * @param ch a code point (0-0x10ffff)
082 */
083 public boolean isPrintable(int ch) {
084 return ch <= this.lastPrintable;
085 }
086 }