/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.aesh.terminal;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.fusesource.jansi.AnsiOutputStream;
import org.fusesource.jansi.WindowsAnsiOutputStream;
import org.fusesource.jansi.internal.WindowsSupport;
import org.jboss.aesh.console.reader.AeshInputStream;
import org.jboss.aesh.console.reader.ConsoleInputSession;
import org.jboss.aesh.console.settings.Settings;
import org.jboss.aesh.util.LoggerUtil;
/**
*
* @author Ståle W. Pedersen <stale.pedersen@jboss.org>
*/
public class WindowsTerminal extends AbstractTerminal {
private PrintStream stdOut;
private PrintStream stdErr;
private TerminalSize size;
private AeshInputStream input;
private long ttyPropsLastFetched;
private static long TIMEOUT_PERIOD = 2000;
private static final Logger LOGGER = LoggerUtil.getLogger(WindowsTerminal.class.getName());
public WindowsTerminal() {
super(LOGGER);
}
@Override
public void init(Settings settings) {
this.settings = settings;
//setting up reader
try {
//AnsiConsole.systemInstall();
this.stdOut = new PrintStream( new WindowsAnsiOutputStream(settings.getStdOut()), true);
this.stdErr = new PrintStream( new WindowsAnsiOutputStream(settings.getStdErr()), true);
}
catch (Exception ioe) {
this.stdOut = new PrintStream( new AnsiOutputStream(settings.getStdOut()), true);
this.stdErr = new PrintStream( new AnsiOutputStream(settings.getStdErr()), true);
}
if(settings.getInputStream().equals(System.in)) {
InputStream inStream = new InputStream() {
@Override
public int read() throws IOException {
return WindowsSupport.readByte();
}
@Override
public int read(byte[] in) throws IOException {
byte[] tmp = ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(WindowsSupport.readByte()).array();
in[0] = tmp[0];
return 1;
}
public void close() {
WindowsSupport.flushConsoleInputBuffer();
}
};
this.input = new ConsoleInputSession(inStream).getExternalInputStream();
}
else {
this.input = new ConsoleInputSession(settings.getInputStream()).getExternalInputStream();
}
}
@Override
public int[] read(boolean readAhead) throws IOException {
if(readAhead) {
return input.readAll();
}
int input = this.input.read();
int available = this.input.available();
if(available > 1) {
int[] in = new int[available];
in[0] = input;
for(int c=1; c < available; c++ )
in[c] = this.input.read();
return in;
}
else
return new int[] {input};
}
private int getHeight() {
int height;
height = WindowsSupport.getWindowsTerminalHeight();
ttyPropsLastFetched = System.currentTimeMillis();
if(height < 1) {
if(settings.isLogging())
LOGGER.log(Level.SEVERE, "Fetched terminal height is "+height+", setting it to 24");
height = 24;
}
return height;
}
private int getWidth() {
int width;
width = WindowsSupport.getWindowsTerminalWidth();
ttyPropsLastFetched = System.currentTimeMillis();
if(width < 1) {
if(settings.isLogging())
LOGGER.log(Level.SEVERE, "Fetched terminal width is "+width+", setting it to 80");
width = 80;
}
return width;
}
@Override
public TerminalSize getSize() {
if(propertiesTimedOut()) {
if(size == null) {
size = new TerminalSize(getHeight(), getWidth());
}
else {
size.setHeight(getHeight());
size.setWidth(getWidth());
}
}
return size;
}
@Override
public boolean isEchoEnabled() {
return false;
}
@Override
public void reset() throws IOException {
}
@Override
public AeshInputStream getInputStream() {
return input;
}
@Override
public void close() throws IOException {
input.close();
}
private boolean propertiesTimedOut() {
return (System.currentTimeMillis() -ttyPropsLastFetched) > TIMEOUT_PERIOD;
}
@Override
public PrintStream err() {
return stdErr;
}
@Override
public PrintStream out() {
return stdOut;
}
}