rev 51881 : 8211163: UNIX version of Java_java_io_Console_echo does not return a clean boolean
Reviewed-by: duke

   1 /*
   2  * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include "jni.h"
  27 #include "jni_util.h"
  28 #include "jvm.h"
  29 #include "java_io_Console.h"
  30 
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <termios.h>
  34 
  35 JNIEXPORT jboolean JNICALL
  36 Java_java_io_Console_istty(JNIEnv *env, jclass cls)
  37 {
  38     return isatty(fileno(stdin)) && isatty(fileno(stdout));
  39 }
  40 
  41 JNIEXPORT jstring JNICALL
  42 Java_java_io_Console_encoding(JNIEnv *env, jclass cls)
  43 {
  44     return NULL;
  45 }
  46 
  47 JNIEXPORT jboolean JNICALL
  48 Java_java_io_Console_echo(JNIEnv *env,
  49                           jclass cls,
  50                           jboolean on)
  51 {
  52     struct termios tio;
  53     jboolean old;
  54     int tty = fileno(stdin);
  55     if (tcgetattr(tty, &tio) == -1) {
  56         JNU_ThrowIOExceptionWithLastError(env, "tcgetattr failed");
  57         return !on;
  58     }
  59     old = (tio.c_lflag & ECHO) != 0;
  60     if (on) {
  61         tio.c_lflag |= ECHO;
  62     } else {
  63         tio.c_lflag &= ~ECHO;
  64     }
  65     if (tcsetattr(tty, TCSANOW, &tio) == -1) {
  66         JNU_ThrowIOExceptionWithLastError(env, "tcsetattr failed");
  67     }
  68     return old;
  69 }
--- EOF ---