IJava/src/main/java/io/github/spencerpark/ijava/LazyOutputStreamDelegate.java

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Spencer Park
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package io.github.spencerpark.ijava;

import java.io.IOException;
import java.io.OutputStream;
import java.util.function.Supplier;

public class LazyOutputStreamDelegate extends OutputStream {
    private final Supplier<OutputStream> writeTo;

    public LazyOutputStreamDelegate(Supplier<OutputStream> writeTo) {
        this.writeTo = writeTo;
    }

    @Override
    public void write(int b) throws IOException {
        this.writeTo.get().write(b);
    }

    @Override
    public void write(byte[] b) throws IOException {
        this.writeTo.get().write(b);
    }

    @Override
    public void write(byte[] b, int off, int len) throws IOException {
        this.writeTo.get().write(b, off, len);
    }

    @Override
    public void flush() throws IOException {
        this.writeTo.get().flush();
    }
}