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Java Source | 1995-08-11 | 2.6 KB | 93 lines |
- /*
- * @(#)PipedOutputStream.java 1.2 95/01/31 James Gosling
- *
- * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for NON-COMMERCIAL purposes and without
- * fee is hereby granted provided that this copyright notice
- * appears in all copies. Please refer to the file "copyright.html"
- * for further important copyright and licensing information.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
- * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
- */
-
- package java.io;
- import java.io.Piped;
-
- /**
- * Piped output stream, must be connected to a PipedInputStream.
- * A thread reading from a PipedInputStream recieves data from
- * a thread writing to the PipedOutputStream it is connected to.
- * @see PipedInputStream
- * @version 95/01/31
- * @author James Gosling
- */
- public
- class PipedOutputStream extends OutputStream {
- private PipedInputStream sink;
-
- /**
- * Creates an output file connected to a PipedInputStream
- * @param snk The InputStream to connect to.
- */
- public PipedOutputStream(PipedInputStream snk) {
- connect(snk);
- }
-
- /**
- * Creates an output file that isn't connected to anything (yet).
- * It must be connected before being used.
- */
- public PipedOutputStream() {
- }
-
- /**
- * Connect this output stream to a reciever.
- * @param snk The InputStream to connect to.
- */
- public void connect(PipedInputStream snk) {
- sink = snk;
- snk.closed = false;
- snk.in = -1;
- snk.out = 0;
- }
-
- /**
- * Write a byte. Will block until the byte is actually
- * written.
- * @exception IOException i/o error occurred
- */
- public void write(int b) {
- sink.recieve(b);
- }
-
- /**
- * Writes a sub array of bytes.
- * @param b the data to be written
- * @param off the start offset in the data
- * @param len the number of bytes that are written
- * @exception IOException i/o error occurred
- */
- public void write(byte b[], int off, int len) {
- sink.recieve(b, off, len);
- }
-
- /**
- * Closes the stream. This method must be called
- * to release any resources associated with the
- * stream.
- * @exception IOException i/o error occurred
- */
- public void close() {
- if (sink != null) {
- sink.recievedLast();
- }
- }
- }
-