/*
* Copyright ( c ) 2005 , 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation . Oracle designates this
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* This code 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 General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include "java_io_Console.h"
#include <stdlib.h>
#include <Wincon.h>
static HANDLE hStdOut = INVALID_HANDLE_VALUE;
static HANDLE hStdIn = INVALID_HANDLE_VALUE;
JNIEXPORT jboolean JNICALL
Java_java_io_Console_istty(JNIEnv *env, jclass cls)
{
if (hStdIn == INVALID_HANDLE_VALUE &&
(hStdIn = GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) {
return JNI_FALSE;
}
if (hStdOut == INVALID_HANDLE_VALUE &&
(hStdOut = GetStdHandle(STD_OUTPUT_HANDLE)) == INVALID_HANDLE_VALUE) {
return JNI_FALSE;
}
if (GetFileType(hStdIn) != FILE_TYPE_CHAR ||
GetFileType(hStdOut) != FILE_TYPE_CHAR)
return JNI_FALSE;
return JNI_TRUE;
}
JNIEXPORT jstring JNICALL
Java_java_io_Console_encoding(JNIEnv *env, jclass cls)
{
char buf[64 ];
int cp = GetConsoleCP();
if (cp >= 874 && cp <= 950 )
sprintf(buf, "ms%d" , cp);
else if (cp == 65001 )
sprintf(buf, "UTF-8" );
else
sprintf(buf, "cp%d" , cp);
return JNU_NewStringPlatform(env, buf);
}
JNIEXPORT jboolean JNICALL
Java_java_io_Console_echo(JNIEnv *env, jclass cls, jboolean on)
{
DWORD fdwMode;
jboolean old;
if (! GetConsoleMode(hStdIn, &fdwMode)) {
JNU_ThrowIOExceptionWithLastError(env, "GetConsoleMode failed" );
return !on;
}
old = (fdwMode & ENABLE_ECHO_INPUT) != 0 ;
if (on) {
fdwMode |= ENABLE_ECHO_INPUT;
} else {
fdwMode &= ~ENABLE_ECHO_INPUT;
}
if (! SetConsoleMode(hStdIn, fdwMode)) {
JNU_ThrowIOExceptionWithLastError(env, "SetConsoleMode failed" );
}
return old;
}
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