89 lines
1.7 KiB
Java
89 lines
1.7 KiB
Java
// PipedWriter.java - Piped character stream.
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/* Copyright (C) 1998, 1999 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.io;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date September 25, 1998
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
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* "The Java Language Specification", ISBN 0-201-63451-1
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* Status: Complete to 1.1.
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*/
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public class PipedWriter extends Writer
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{
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public void close () throws IOException
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{
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closed = true;
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}
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public void connect (PipedReader sink) throws IOException
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{
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if (closed)
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throw new IOException ("already closed");
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if (reader != null)
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{
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if (reader == sink)
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return;
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throw new IOException ("already connected");
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}
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try
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{
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reader = sink;
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reader.connect(this);
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}
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catch (IOException e)
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{
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reader = null;
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throw e;
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}
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}
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public void flush () throws IOException
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{
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// We'll throw an exception if we're closed, but there's nothing
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// else to do here.
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if (closed)
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throw new IOException ("closed");
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}
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public PipedWriter ()
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{
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super ();
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closed = false;
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}
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public PipedWriter (PipedReader sink) throws IOException
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{
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super ();
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closed = false;
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connect (sink);
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}
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public void write (char buffer[], int offset, int count) throws IOException
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{
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if (closed)
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throw new IOException ("closed");
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reader.receive(buffer, offset, count);
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}
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boolean isClosed ()
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{
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return closed;
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}
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// The associated reader.
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private PipedReader reader;
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private boolean closed;
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}
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