juneau-core/juneau-marshall/src/main/java/org/apache/juneau/internal/NoCloseWriter.java

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// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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// ***************************************************************************************************************************
package org.apache.juneau.internal;

import java.io.*;

/**
 * Wraps an existing {@link Writer} where the {@link #close()} method is a no-op.
 *
 * <p>
 * Useful in cases where you're working with streams that should not be implicitly closed.
 */
public final class NoCloseWriter extends Writer {

	private final Writer w;

	/**
	 * Constructor.
	 *
	 * @param w The writer to wrap.
	 */
	public NoCloseWriter(Writer w) {
		this.w = w;
	}

	@Override /* Writer */
	public Writer append(char c) throws IOException {
		return w.append(c);
	}

	@Override /* Writer */
	public Writer append(CharSequence csq) throws IOException {
		return w.append(csq);
	}

	@Override /* Writer */
	public Writer append(CharSequence csq, int start, int end) throws IOException {
		return w.append(csq, start, end);
	}

	@Override /* Writer */
	public void close() throws IOException {
		w.flush();
	}

	@Override /* Writer */
	public void flush() throws IOException {
		w.flush();
	}

	@Override /* Writer */
	public void write(char[] cbuf) throws IOException {
		w.write(cbuf);
	}

	@Override /* Writer */
	public void write(char[] cbuf, int off, int len) throws IOException {
		w.write(cbuf, off, len);
	}

	@Override /* Writer */
	public void write(int c) throws IOException {
		w.write(c);
	}

	@Override /* Writer */
	public void write(String str) throws IOException {
		w.write(str);
	}

	@Override /* Writer */
	public void write(String str, int off, int len) throws IOException {
		w.write(str, off, len);
	}

	@Override /* Object */
	public String toString() {
		return w.toString();
	}
}