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); 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 }