/*
 *  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.codehaus.groovy.runtime;

import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;

/**
 * Stream writer which flushes after each write operation.
 */
public class FlushingStreamWriter extends OutputStreamWriter {

    /**
     * Constructs a FlushingStreamWriter that flushes on every write.
     *
     * @param out the underlying output stream to write to
     * @throws NullPointerException if out is null
     */
    public FlushingStreamWriter(OutputStream out) {
        super(out);
    }

    /**
     * Constructs a FlushingStreamWriter that flushes on every write.
     *
     * @param out the underlying output stream to write to
     * @param charset the charset to encode with
     * @throws NullPointerException if out or charset is null
     * @since 6.0.0
     */
    public FlushingStreamWriter(OutputStream out, Charset charset) {
        super(out, charset);
    }

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

    @Override
    public void write(int c) throws IOException {
        super.write(c);
        flush();
    }

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