| /* |
| * Copyright (c) 2015, 2017, 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 "jdk_internal_jline_WindowsTerminal.h" |
| |
| #include <stdlib.h> |
| #include <Wincon.h> |
| #include <Winuser.h> |
| |
| static jclass recordClass; |
| static jmethodID recordConstructor; |
| |
| JNIEXPORT void JNICALL Java_jdk_internal_jline_WindowsTerminal_initIDs |
| (JNIEnv *env, jclass) { |
| jclass cls = env->FindClass("jdk/internal/jline/WindowsTerminal$KEY_EVENT_RECORD"); |
| CHECK_NULL(cls); |
| recordClass = (jclass) env->NewGlobalRef(cls); |
| CHECK_NULL(recordClass); |
| recordConstructor = env->GetMethodID(cls, "<init>", "(ZCIII)V"); |
| CHECK_NULL(recordConstructor); |
| } |
| |
| JNIEXPORT jint JNICALL Java_jdk_internal_jline_WindowsTerminal_getConsoleMode |
| (JNIEnv *, jobject) { |
| HANDLE hStdIn; |
| if ((hStdIn = GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
| return -1; |
| } |
| DWORD fdwMode; |
| if (! GetConsoleMode(hStdIn, &fdwMode)) { |
| return -1; |
| } |
| return fdwMode; |
| } |
| |
| JNIEXPORT void JNICALL Java_jdk_internal_jline_WindowsTerminal_setConsoleMode |
| (JNIEnv *, jobject, jint mode) { |
| HANDLE hStdIn; |
| if ((hStdIn = GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
| return ; |
| } |
| DWORD fdwMode = mode; |
| SetConsoleMode(hStdIn, fdwMode); |
| } |
| |
| JNIEXPORT jobject JNICALL Java_jdk_internal_jline_WindowsTerminal_readKeyEvent |
| (JNIEnv *env, jobject) { |
| HANDLE hStdIn; |
| if ((hStdIn = GetStdHandle(STD_INPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
| return NULL; |
| } |
| INPUT_RECORD record; |
| DWORD n; |
| while (TRUE) { |
| if (ReadConsoleInputW(hStdIn, &record, 1, &n) == 0) { |
| return NULL; |
| } |
| if (record.EventType == KEY_EVENT) { |
| jclass clazz = env->FindClass("jdk/internal/jline/WindowsTerminal$KEY_EVENT_RECORD"); |
| jmethodID constr = env->GetMethodID(clazz, "<init>", "(ZCIII)V"); |
| return env->NewObject(recordClass, |
| recordConstructor, |
| record.Event.KeyEvent.bKeyDown, |
| record.Event.KeyEvent.uChar.UnicodeChar, |
| record.Event.KeyEvent.dwControlKeyState, |
| record.Event.KeyEvent.wVirtualKeyCode, |
| record.Event.KeyEvent.wRepeatCount); |
| } |
| continue; |
| } |
| } |
| |
| JNIEXPORT jint JNICALL Java_jdk_internal_jline_WindowsTerminal_getConsoleOutputCodepage |
| (JNIEnv *, jobject) { |
| return GetConsoleOutputCP(); |
| } |
| |
| JNIEXPORT jint JNICALL Java_jdk_internal_jline_WindowsTerminal_getWindowsTerminalWidth |
| (JNIEnv *, jobject) { |
| HANDLE hStdOut; |
| if ((hStdOut = GetStdHandle(STD_OUTPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
| return -1; |
| } |
| CONSOLE_SCREEN_BUFFER_INFO info; |
| if (! GetConsoleScreenBufferInfo(hStdOut, &info)) { |
| return -1; |
| } |
| return info.srWindow.Right - info.srWindow.Left; |
| } |
| |
| JNIEXPORT jint JNICALL Java_jdk_internal_jline_WindowsTerminal_getWindowsTerminalHeight |
| (JNIEnv *, jobject) { |
| HANDLE hStdOut; |
| if ((hStdOut = GetStdHandle(STD_OUTPUT_HANDLE)) == INVALID_HANDLE_VALUE) { |
| return -1; |
| } |
| CONSOLE_SCREEN_BUFFER_INFO info; |
| if (! GetConsoleScreenBufferInfo(hStdOut, &info)) { |
| return -1; |
| } |
| return info.srWindow.Bottom - info.srWindow.Top + 1; |
| } |