/*
 * Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at:
 *
 *     http://aws.amazon.com/apache2.0/
 *
 * or in the "license" file accompanying this file. This file 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 com.fasterxml.jackson.dataformat.ion.util;

import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;

import com.fasterxml.jackson.core.io.IOContext;
import com.fasterxml.jackson.core.io.UTF8Writer;

This is simply a wrapper around the UTF8Writer to prevent it from throwing an NPE after closing. It would be easier to subclass it, but UTF8Writer is final, so we have to use delegation. 
Deprecated:
Since 2.13 should not be needed any more/**
 * This is simply a wrapper around the {@link UTF8Writer} to prevent it from throwing 
 * an NPE after closing. It would be easier to subclass it, but {@link UTF8Writer} is 
 * final, so we have to use delegation.
 *
 * @deprecated Since 2.13 should not be needed any more
 */
@Deprecated
public class CloseSafeUTF8Writer extends Writer
{
    UTF8Writer wrapped;
    boolean closed = false;
    Object closedLatch = new Object();

    public CloseSafeUTF8Writer(IOContext ctxt, OutputStream out) {
        wrapped = new UTF8Writer(ctxt,out);
    }

    @Override
    public void close() throws IOException {
        synchronized(closedLatch) {
            if(!closed) {
                closed = true;
                wrapped.close();
            }
        }
    }

    @Override
    public void flush() throws IOException {
        synchronized(closedLatch) {
            if(!closed) {
                wrapped.flush();
            }
        }
    }

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

    @Override
    public void write(char[] cbuf) throws IOException {
        wrapped.write(cbuf);
    }

    @Override
    public void write(char[] cbuf, int off, int len) throws IOException {
        wrapped.write(cbuf, off, len);
    }
    
    @Override
    public void write(int c) throws IOException {
        wrapped.write(c);
    }

    @Override
    public void write(String str) throws IOException {
        wrapped.write(str);
    }

    @Override
    public void write(String str, int off, int len)  throws IOException {
        wrapped.write(str, off, len);
    }
    
    
    
}