| /* |
| * 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.sis.io; |
| |
| import java.io.IOException; |
| |
| import static org.junit.Assert.*; |
| |
| |
| /** |
| * An {@link Appendable} that forward all output to two {@code Appendable}s. |
| * This writer can be used for performing an exact copy of what is sent to an other writer. |
| * For example, it may be used for echoing to the standard output the content sent to a file. |
| * This writer is useful for debugging purpose. |
| * |
| * @author Martin Desruisseaux (Geomatys) |
| * @version 0.3 |
| * @since 0.3 |
| * @module |
| */ |
| public class EchoAppendable extends Appender { |
| /** |
| * The echo writer. |
| */ |
| private final Appendable echo; |
| |
| /** |
| * Creates a copy writer for the specified streams or buffers. |
| * |
| * @param main the main stream or buffer. |
| * @param echo the echo stream or buffer. |
| */ |
| public EchoAppendable(final Appendable main, final Appendable echo) { |
| super(main); |
| this.echo = echo; |
| } |
| |
| /** |
| * Writes a single character. |
| * |
| * @param c the character to append. |
| * @return {@code this}. |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public Appendable append(final char c) throws IOException { |
| assertSame(out, out .append(c)); |
| assertSame(echo, echo.append(c)); |
| return this; |
| } |
| |
| /** |
| * Writes a character sequence. |
| * |
| * @param sequence the character sequence to be written. |
| * @return {@code this}. |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public Appendable append(final CharSequence sequence) throws IOException { |
| assertSame(out, out .append(sequence)); |
| assertSame(echo, echo.append(sequence)); |
| return this; |
| } |
| |
| /** |
| * Writes a portion of a character sequence. |
| * |
| * @param sequence the character sequence to be written. |
| * @param start index from which to start reading characters. |
| * @param end index of the character following the last character to read. |
| * @return {@code this}. |
| * @throws IOException if an I/O error occurs. |
| */ |
| @Override |
| public Appendable append(final CharSequence sequence, final int start, final int end) throws IOException { |
| assertSame(out, out .append(sequence, start, end)); |
| assertSame(echo, echo.append(sequence, start, end)); |
| return this; |
| } |
| } |