+++ /dev/null
-/*
- * Jexer - Java Text User Interface
- *
- * The MIT License (MIT)
- *
- * Copyright (C) 2019 Kevin Lamonte
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * @author Kevin Lamonte [kevin.lamonte@gmail.com]
- * @version 1
- */
-package jexer.backend;
-
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
-import java.io.IOException;
-import java.util.StringTokenizer;
-
-/**
- * TTYSessionInfo queries environment variables and the tty window size for
- * the session information. The username is taken from user.name, language
- * is taken from user.language, and text window size from 'stty size'.
- */
-public class TTYSessionInfo implements SessionInfo {
-
- // ------------------------------------------------------------------------
- // Variables --------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * User name.
- */
- private String username = "";
-
- /**
- * Language.
- */
- private String language = "";
-
- /**
- * Text window width. Default is 80x24 (same as VT100-ish terminals).
- */
- private int windowWidth = 80;
-
- /**
- * Text window height. Default is 80x24 (same as VT100-ish terminals).
- */
- private int windowHeight = 24;
-
- /**
- * Time at which the window size was refreshed.
- */
- private long lastQueryWindowTime;
-
- // ------------------------------------------------------------------------
- // Constructors -----------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Public constructor.
- */
- public TTYSessionInfo() {
- // Populate lang and user from the environment
- username = System.getProperty("user.name");
- language = System.getProperty("user.language");
- queryWindowSize();
- }
-
- // ------------------------------------------------------------------------
- // SessionInfo ------------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Username getter.
- *
- * @return the username
- */
- public String getUsername() {
- return this.username;
- }
-
- /**
- * Username setter.
- *
- * @param username the value
- */
- public void setUsername(final String username) {
- this.username = username;
- }
-
- /**
- * Language getter.
- *
- * @return the language
- */
- public String getLanguage() {
- return this.language;
- }
-
- /**
- * Language setter.
- *
- * @param language the value
- */
- public void setLanguage(final String language) {
- this.language = language;
- }
-
- /**
- * Text window width getter.
- *
- * @return the window width
- */
- public int getWindowWidth() {
- if (System.getProperty("os.name").startsWith("Windows")) {
- // Always use 80x25 for Windows (same as DOS)
- return 80;
- }
- return windowWidth;
- }
-
- /**
- * Text window height getter.
- *
- * @return the window height
- */
- public int getWindowHeight() {
- if (System.getProperty("os.name").startsWith("Windows")) {
- // Always use 80x25 for Windows (same as DOS)
- return 25;
- }
- return windowHeight;
- }
-
- /**
- * Re-query the text window size.
- */
- public void queryWindowSize() {
- if (lastQueryWindowTime == 0) {
- lastQueryWindowTime = System.currentTimeMillis();
- } else {
- long nowTime = System.currentTimeMillis();
- if (nowTime - lastQueryWindowTime < 1000) {
- // Don't re-spawn stty if it hasn't been a full second since
- // the last time.
- return;
- }
- }
- if (System.getProperty("os.name").startsWith("Linux")
- || System.getProperty("os.name").startsWith("Mac OS X")
- || System.getProperty("os.name").startsWith("SunOS")
- || System.getProperty("os.name").startsWith("FreeBSD")
- ) {
- // Use stty to get the window size
- sttyWindowSize();
- }
- }
-
- // ------------------------------------------------------------------------
- // TTYSessionInfo ---------------------------------------------------------
- // ------------------------------------------------------------------------
-
- /**
- * Call 'stty size' to obtain the tty window size. windowWidth and
- * windowHeight are set automatically.
- */
- private void sttyWindowSize() {
- String [] cmd = {
- "/bin/sh", "-c", "stty size < /dev/tty"
- };
- try {
- Process process = Runtime.getRuntime().exec(cmd);
- BufferedReader in = new BufferedReader(
- new InputStreamReader(process.getInputStream(), "UTF-8"));
- String line = in.readLine();
- if ((line != null) && (line.length() > 0)) {
- StringTokenizer tokenizer = new StringTokenizer(line);
- int rc = Integer.parseInt(tokenizer.nextToken());
- if (rc > 0) {
- windowHeight = rc;
- }
- rc = Integer.parseInt(tokenizer.nextToken());
- if (rc > 0) {
- windowWidth = rc;
- }
- }
- while (true) {
- BufferedReader err = new BufferedReader(
- new InputStreamReader(process.getErrorStream(),
- "UTF-8"));
- line = err.readLine();
- if ((line != null) && (line.length() > 0)) {
- System.err.println("Error output from stty: " + line);
- }
- try {
- process.waitFor();
- break;
- } catch (InterruptedException e) {
- // SQUASH
- }
- }
- int rc = process.exitValue();
- if (rc != 0) {
- System.err.println("stty returned error code: " + rc);
- }
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
-
-}
git://git.nikiroo.be / fanfix.git / blobdiff