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/* Copyright (c) 2007 Jython Developers */
package org.python.core.io;
import java.io.IOException;
import java.nio.channels.Channel;
import org.python.core.Py;
/**
* Base raw I/O implementation for sockets.
*
* @author Philip Jenvey
*/
public abstract class SocketIOBase extends RawIOBase {
/** The underlying socket */
protected T socketChannel;
/** true if the socket is allowed to be read from */
private boolean readable = false;
/** true if the socket is allowed to be written to */
private boolean writable = false;
/**
* Construct a SocketIOBase for the given socket Channel
*
* @param socketChannel a Channel to wrap
* @param mode a raw io socket mode String
*/
public SocketIOBase(T socketChannel, String mode) {
this.socketChannel = socketChannel;
parseMode(mode);
}
/**
* Parse the raw io socket mode string.
*
* The mode can be 'r', 'w' or 'rw' for reading, writing or
* reading and writing.
*
* @param mode a raw io socket mode String
*/
protected void parseMode(String mode) {
if (mode.equals("r")) {
readable = true;
} else if (mode.equals("w")) {
writable = true;
} else if (mode.equals("rw")) {
readable = writable = true;
} else {
throw Py.ValueError("invalid mode: '" + mode + "'");
}
}
@Override
public void close() {
if (closed()) {
return;
}
try {
socketChannel.close();
} catch (IOException ioe) {
throw Py.IOError(ioe);
}
super.close();
}
@Override
public T getChannel() {
return socketChannel;
}
@Override
public boolean readable() {
return readable;
}
@Override
public boolean writable() {
return writable;
}
}