1 /*
2 * Copyright (c) 2005, 2013, 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 <Wincon.h>
33
34 static HANDLE hStdOut = INVALID_HANDLE_VALUE;
35 static HANDLE hStdIn = INVALID_HANDLE_VALUE;
36 JNIEXPORT jboolean JNICALL
Java_java_io_Console_istty(JNIEnv * env,jclass cls)37 Java_java_io_Console_istty(JNIEnv *env, jclass cls)
38 {
39 if (hStdIn == INVALID_HANDLE_VALUE &&
40 (hStdIn = GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) {
41 return JNI_FALSE;
42 }
43 if (hStdOut == INVALID_HANDLE_VALUE &&
44 (hStdOut = GetStdHandle(STD_OUTPUT_HANDLE)) == INVALID_HANDLE_VALUE) {
45 return JNI_FALSE;
46 }
47 if (GetFileType(hStdIn) != FILE_TYPE_CHAR ||
48 GetFileType(hStdOut) != FILE_TYPE_CHAR)
49 return JNI_FALSE;
50 return JNI_TRUE;
51 }
52
53 JNIEXPORT jstring JNICALL
Java_java_io_Console_encoding(JNIEnv * env,jclass cls)54 Java_java_io_Console_encoding(JNIEnv *env, jclass cls)
55 {
56 char buf[64];
57 int cp = GetConsoleCP();
58 if (cp >= 874 && cp <= 950)
59 sprintf(buf, "ms%d", cp);
60 else
61 sprintf(buf, "cp%d", cp);
62 return JNU_NewStringPlatform(env, buf);
63 }
64
65 JNIEXPORT jboolean JNICALL
Java_java_io_Console_echo(JNIEnv * env,jclass cls,jboolean on)66 Java_java_io_Console_echo(JNIEnv *env, jclass cls, jboolean on)
67 {
68 DWORD fdwMode;
69 jboolean old;
70 if (! GetConsoleMode(hStdIn, &fdwMode)) {
71 JNU_ThrowIOExceptionWithLastError(env, "GetConsoleMode failed");
72 return !on;
73 }
74 old = (fdwMode & ENABLE_ECHO_INPUT) != 0;
75 if (on) {
76 fdwMode |= ENABLE_ECHO_INPUT;
77 } else {
78 fdwMode &= ~ENABLE_ECHO_INPUT;
79 }
80 if (! SetConsoleMode(hStdIn, fdwMode)) {
81 JNU_ThrowIOExceptionWithLastError(env, "SetConsoleMode failed");
82 }
83 return old;
84 }
85