cx.ath.matthew.io.TeeInputStream Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of libmatthew Show documentation

Some libraries from Matthew Johnson: http://www.matthew.ath.cx/projects/java/ Modifications: - including precompiled native C libraries (libunix-java) for architectures: arm, amd64 and i386 - UnixSocket/UnixServerSocket now implements closable (allows try-with-resources usage) - Cleaned up code style - Split test classes to test classpath - Introduced JUnit - Removed the whole CGI package, it should never ever been used these days

The newest version!

/*
 * Java Tee Stream Library
 *
 * Copyright (c) Matthew Johnson 2005
 *
 * 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.
 *
 * To Contact the author, please email [email protected]
 *
 */

package cx.ath.matthew.io;

import java.io.File;
import java.io.FileOutputStream;
import java.io.FilterInputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * Class to copy a stream to a file or another stream as it is being sent through a stream pipe
 * E.g.
 *  *    Reader r = new InputStreamReader(new TeeInputStream(new FileInputStream("file"), new File("otherfile")));
 * 
 */
public class TeeInputStream extends FilterInputStream {
    private InputStream  in;
    private OutputStream fos;

    /**
    * Create a new TeeInputStream on the given InputStream
    * and copy the stream to the given File.
    * @param is Reads from this InputStream
    * @param tos Write to this OutputStream
    * @throws IOException on error
    */
    public TeeInputStream(InputStream is, OutputStream tos) throws IOException {
        super(is);
        this.in = is;
        this.fos = tos;
    }

    /**
    * Create a new TeeInputStream on the given InputStream
    * and copy the stream to the given File.
    * @param is Reads from this InputStream
    * @param f Write to this File
    * @param append Append to file not overwrite
    * @throws IOException on error
    */
    public TeeInputStream(InputStream is, File f, boolean append) throws IOException {
        super(is);
        this.in = is;
        this.fos = new FileOutputStream(f, append);
    }

    /**
    * Create a new TeeInputStream on the given InputStream
    * and copy the stream to the given File.
    * @param is Reads from this InputStream
    * @param f Write to this File
    * @throws IOException on error
    */
    public TeeInputStream(InputStream is, File f) throws IOException {
        super(is);
        this.in = is;
        this.fos = new FileOutputStream(f);
    }

    /**
    * Create a new TeeInputStream on the given InputStream
    * and copy the stream to the given File.
    * @param is Reads from this InputStream
    * @param f Write to this File
    * @param append Append to file not overwrite
    * @throws IOException on error
    */
    public TeeInputStream(InputStream is, String f, boolean append) throws IOException {
        this(is, new File(f), append);
    }

    /**
    * Create a new TeeInputStream on the given InputStream
    * and copy the stream to the given File.
    * @param is Reads from this InputStream
    * @param f Write to this File
    * @throws IOException on error
    */
    public TeeInputStream(InputStream is, String f) throws IOException {
        this(is, new File(f));
    }

    public void close() throws IOException {
        in.close();
        fos.close();
    }

    public void flush() throws IOException {
        fos.flush();
    }

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

    public int read() throws IOException {
        int i = in.read();
        if (-1 != i)
            fos.write(i);
        return i;
    }

    public int read(byte[] b) throws IOException {
        int c = in.read(b);
        if (-1 != c)
            fos.write(b, 0, c);
        return c;
    }

    public int read(byte[] b, int off, int len) throws IOException {
        int c = in.read(b, off, len);
        if (-1 != c)
            fos.write(b, off, c);
        return c;
    }

    public long skip(long n) throws IOException {
        return in.skip(n);
    }

    public void mark(int readlimit) {
    }

    public boolean markSupported() {
        return false;
    }

    public void reset() throws IOException {
        in.reset();
    }

    public void finalize() {
        try {
            close();
        } catch (Exception e) {
        }
    }
}