| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (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.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| package org.apache.flex.forks.batik.util.io; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * This class is the superclass of all the char decoders. |
| * |
| * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a> |
| * @version $Id: AbstractCharDecoder.java 478169 2006-11-22 14:23:24Z dvholten $ |
| */ |
| public abstract class AbstractCharDecoder implements CharDecoder { |
| |
| /** |
| * The buffer size. |
| */ |
| protected static final int BUFFER_SIZE = 8192; |
| |
| /** |
| * The input stream to read. |
| */ |
| protected InputStream inputStream; |
| |
| /** |
| * The input buffer. |
| */ |
| protected byte[] buffer = new byte[BUFFER_SIZE]; |
| |
| /** |
| * The current position in the buffer. |
| */ |
| protected int position; |
| |
| /** |
| * The byte count in the buffer. |
| */ |
| protected int count; |
| |
| /** |
| * Creates a new CharDecoder object. |
| * @param is The stream to read. |
| */ |
| protected AbstractCharDecoder(InputStream is) { |
| inputStream = is; |
| } |
| |
| /** |
| * Disposes the associated resources. |
| */ |
| public void dispose() throws IOException { |
| inputStream.close(); |
| inputStream = null; |
| } |
| |
| /** |
| * Fills the input buffer. |
| */ |
| protected void fillBuffer() throws IOException { |
| count = inputStream.read(buffer, 0, BUFFER_SIZE); |
| position = 0; |
| } |
| |
| /** |
| * To throws an exception when the input stream contains an |
| * invalid character. |
| * @param encoding The encoding name. |
| */ |
| protected void charError(String encoding) throws IOException { |
| throw new IOException |
| (Messages.formatMessage("invalid.char", |
| new Object[] { encoding })); |
| } |
| |
| /** |
| * To throws an exception when the end of stream was unexpected. |
| * @param encoding The encoding name. |
| */ |
| protected void endOfStreamError(String encoding) throws IOException { |
| throw new IOException |
| (Messages.formatMessage("end.of.stream", |
| new Object[] { encoding })); |
| } |
| } |