org.bouncycastle.util.io.TeeInputStream Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcprov-ext-debug-jdk18on Show documentation

The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for Java 1.8 and later with debug enabled.

The newest version!

package org.bouncycastle.util.io;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * An input stream which copies anything read through it to another stream.
 */
public class TeeInputStream
    extends InputStream
{
    private final InputStream input;
    private final OutputStream output;

    /**
     * Base constructor.
     *
     * @param input input stream to be wrapped.
     * @param output output stream to copy any input read to.
     */
    public TeeInputStream(InputStream input, OutputStream output)
    {
        this.input = input;
        this.output = output;
    }

    public int available() throws IOException
    {
        return input.available();
    }

    public int read(byte[] buf)
        throws IOException
    {
        return read(buf, 0, buf.length);
    }

    public int read(byte[] buf, int off, int len)
        throws IOException
    {
        int i = input.read(buf, off, len);

        if (i > 0)
        {
            output.write(buf, off, i);
        }

        return i;
    }

    public int read()
        throws IOException
    {
        int i = input.read();

        if (i >= 0)
        {
            output.write(i);
        }

        return i;
    }

    public void close()
        throws IOException
    {
        this.input.close();
        this.output.close();
    }

    public OutputStream getOutputStream()
    {
        return output;
    }
}