/**
* @copyright
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
* @endcopyright
*/
package org.tigris.subversion.javahl;
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
/**
* This class connects a java.io.PipedInputStream to a OutputInterface.
* The other side of the Pipe must read by another thread, or deadlocks
* will occur.
*/
public class SVNInputStream extends PipedInputStream
{
/**
* my connection to put data into subversion
*/
Outputer myOutputer;
/**
* Creates a SVNInputStream so that it is connected with an internal
* PipedOutputStream
* @throws IOException
*/
public SVNInputStream() throws IOException
{
myOutputer = new Outputer(this);
}
/**
* Get the Interface to connect to SVNAdmin
* @return the connection interface
*/
public OutputInterface getOutputer()
{
return myOutputer;
}
/**
* Closes this input stream and releases any system resources associated
* with the stream.
*
* <p> The <code>close</code> method of <code>InputStream</code> does
* nothing.
*
* @throws IOException if an I/O error occurs.
*/
public void close() throws IOException
{
myOutputer.closed = true;
super.close();
}
/**
* this class implements the connection to SVNAdmin
*/
public class Outputer implements OutputInterface
{
/**
* my side of the pipe
*/
PipedOutputStream myStream;
/**
* flag that the other side of the pipe has been closed
*/
boolean closed;
/**
* build a new connection object
* @param myMaster the other side of the pipe
* @throws IOException
*/
Outputer(SVNInputStream myMaster) throws IOException
{
myStream =new PipedOutputStream(myMaster);
}
/**
* write the bytes in data to java
* @param data the data to be written
* @throws IOException throw in case of problems.
*/
public int write(byte[] data) throws IOException
{
if (closed)
throw new IOException("stream has been closed");
myStream.write(data);
return data.length;
}
/**
* close the output
* @throws IOException throw in case of problems.
*/
public void close() throws IOException
{
myStream.close();
}
}
}