/*
* This file is part of lanterna (http://code.google.com/p/lanterna/).
*
* lanterna is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) 2010-2012 Martin
*/
package com.googlecode.lanterna.terminal.text;
import com.googlecode.lanterna.LanternaException;
import com.googlecode.lanterna.input.GnomeTerminalProfile;
import com.googlecode.lanterna.input.PuttyProfile;
import com.googlecode.lanterna.terminal.TerminalSize;
import java.io.*;
import java.nio.charset.Charset;
import java.util.Timer;
import java.util.TimerTask;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* This class is trying to provide some special workarounds in order to function
* in Cygwin terminal environments.
* <b>This is work in progress and is not functional at the moment</b>
* @author Martin
*/
public class CygwinTerminal extends ANSITerminal {
private static final Pattern STTY_SIZE_PATTERN = Pattern.compile(".*rows ([0-9]+);.*columns ([0-9]+);.*");
private Timer resizeCheckTimer;
public CygwinTerminal(
InputStream terminalInput,
OutputStream terminalOutput,
Charset terminalCharset)
{
super(terminalInput, terminalOutput, terminalCharset);
addInputProfile(new GnomeTerminalProfile());
addInputProfile(new PuttyProfile());
//Make sure to set an initial size
onResized(80, 20);
resizeCheckTimer = null;
}
@Override
public TerminalSize getTerminalSize() {
try {
String stty = exec(findSTTY(), "-F", "/dev/pty0", "-a"); //exec(findShell(), "-c", "echo $PPID");
Matcher matcher = STTY_SIZE_PATTERN.matcher(stty);
if(matcher.matches())
return new TerminalSize(Integer.parseInt(matcher.group(2)), Integer.parseInt(matcher.group(1)));
else
return new TerminalSize(80, 20);
}
catch(LanternaException e) {
return new TerminalSize(80, 20);
}
}
@Override
public void enterPrivateMode()
{
super.enterPrivateMode();
setCBreak(true);
setEcho(false);
sttyMinimumCharacterForRead(1);
resizeCheckTimer = new Timer("CygwinTerminalResizeChecker");
resizeCheckTimer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
//queryTerminalSize();
}
}, 1000, 1000);
}
@Override
public void exitPrivateMode()
{
resizeCheckTimer.cancel();
setEcho(true);
super.exitPrivateMode();
setCBreak(false);
}
@Override
public void setCBreak(boolean cbreakOn) {
sttyCBreak(cbreakOn);
}
@Override
public void setEcho(boolean echoOn) {
sttyKeyEcho(echoOn);
}
private static void sttyKeyEcho(final boolean enable)
{
exec(findSTTY(), "-F", "/dev/pty0", (enable ? "echo" : "-echo"));
/*
exec(findShell(), "-c",
"/bin/stty.exe " + (enable ? "echo" : "-echo") + " < /dev/tty");
*/
}
private static void sttyMinimumCharacterForRead(final int nrCharacters)
{
exec(findSTTY(), "-F", "/dev/pty0", "min", nrCharacters + "");
/*
exec(findShell(), "-c",
"/bin/stty.exe min " + nrCharacters + " < /dev/tty");
*/
}
private static void sttyCBreak(final boolean enable)
{
exec(findSTTY(), "-F", "/dev/pty0", (enable ? "cbreak" : "icanon"));
/*
exec(findShell(), "-c",
"/bin/stty.exe " + (enable ? "-icanon" : "icanon") + " < /dev/tty");
*/
}
private static String findShell() {
return findProgram("sh.exe");
}
private static String findSTTY() {
return findProgram("stty.exe");
}
private static String findProgram(String programName) {
String[] paths = System.getProperty("java.library.path").split(";");
for(String path: paths) {
File shBin = new File(path, programName);
if(shBin.exists())
return shBin.getAbsolutePath();
}
return programName;
}
private static String exec(String ...cmd)
{
try {
ProcessBuilder pb = new ProcessBuilder(cmd);
Process process = pb.start();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream stdout = process.getInputStream();
int readByte = stdout.read();
while(readByte >= 0) {
baos.write(readByte);
readByte = stdout.read();
}
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
BufferedReader reader = new BufferedReader(new InputStreamReader(bais));
StringBuilder builder = new StringBuilder();
while(reader.ready()) {
builder.append(reader.readLine());
}
reader.close();
return builder.toString();
}
catch(IOException e) {
throw new LanternaException(e);
}
}
}