-/*
- * 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) 2010-2015 Martin
- */
-package com.googlecode.lanterna.terminal.ansi;
-
-import com.googlecode.lanterna.TerminalSize;
-
-import java.io.*;
-import java.nio.charset.Charset;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- * This class extends UnixLikeTerminal and implements the Cygwin-specific implementations. This means, running a Java
- * application using Lanterna inside the Cygwin Terminal application. The standard Windows command prompt (cmd.exe) is
- * not supported by this class.<p>
- * <p>
- * <b>NOTE:</b> This class is experimental and does not fully work! Some of the operations, like disabling echo and
- * changing cbreak seems to be impossible to do without resorting to native code. Running "stty raw" before starting the
- * JVM will improve compatibility.
- *
- * @author Martin
- * @author Andreas
- */
-public class CygwinTerminal extends UnixLikeTerminal {
-
- private static final Pattern STTY_SIZE_PATTERN = Pattern.compile(".*rows ([0-9]+);.*columns ([0-9]+);.*");
- private static final String STTY_LOCATION = findProgram("stty.exe");
-
- /**
- * Creates a new CygwinTerminal based off input and output streams and a character set to use
- * @param terminalInput Input stream to read input from
- * @param terminalOutput Output stream to write output to
- * @param terminalCharset Character set to use when writing to the output stream
- * @throws IOException If there was an I/O error when trying to initialize the class and setup the terminal
- */
- public CygwinTerminal(
- InputStream terminalInput,
- OutputStream terminalOutput,
- Charset terminalCharset) throws IOException {
- super(terminalInput, terminalOutput, terminalCharset,
- CtrlCBehaviour.TRAP, null);
-
- //Make sure to set an initial size
- onResized(80, 24);
-
- saveSTTY();
- setCBreak(true);
- setEcho(false);
- sttyMinimum1CharacterForRead();
- setupShutdownHook();
- }
-
- @Override
- public TerminalSize getTerminalSize() {
- try {
- String stty = exec(findSTTY(), "-F", getPseudoTerminalDevice(), "-a");
- 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, 24);
- }
- }
- catch(Throwable e) {
- return new TerminalSize(80, 24);
- }
- }
-
- @Override
- protected void sttyKeyEcho(final boolean enable) throws IOException {
- runSTTYCommand(enable ? "echo" : "-echo");
- }
-
- @Override
- protected void sttyMinimum1CharacterForRead() throws IOException {
- runSTTYCommand("min", "1");
- }
-
- @Override
- protected void sttyICanon(final boolean enable) throws IOException {
- runSTTYCommand(enable ? "icanon" : "cbreak");
- }
-
- @Override
- protected String sttySave() throws IOException {
- return runSTTYCommand("-g").trim();
- }
-
- @Override
- protected void sttyRestore(String tok) throws IOException {
- runSTTYCommand(tok);
- }
-
- protected String findSTTY() {
- return STTY_LOCATION;
- }
-
- private String runSTTYCommand(String... parameters) throws IOException {
- List<String> commandLine = new ArrayList<String>(Arrays.asList(
- findSTTY(),
- "-F",
- getPseudoTerminalDevice()));
- commandLine.addAll(Arrays.asList(parameters));
- return exec(commandLine.toArray(new String[commandLine.size()]));
- }
-
- private String getPseudoTerminalDevice() {
- //This will only work if you only have one terminal window open, otherwise we'll need to figure out somehow
- //which pty to use, which could be very tricky...
- return "/dev/pty0";
- }
-
- 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;
- }
-
-}