74 lines
2.5 KiB
C++
Executable File
74 lines
2.5 KiB
C++
Executable File
#ifdef WIN32
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#include "native.h"
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#include "generic.h"
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#include <windows.h>
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/*
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* Marks the given result as failed, using the current value of GetLastError()
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*/
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void mark_failed_with_errno(JNIEnv *env, const char* message, jobject result) {
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mark_failed_with_code(env, message, GetLastError(), result);
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}
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/*
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* Process functions
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*/
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JNIEXPORT jint JNICALL
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Java_net_rubygrapefruit_platform_internal_jni_PosixProcessFunctions_getPid(JNIEnv *env, jclass target) {
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return GetCurrentProcessId();
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}
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/*
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* Console functions
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*/
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HANDLE getHandle(JNIEnv *env, int output, jobject result) {
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HANDLE handle = output == 1 ? GetStdHandle(STD_OUTPUT_HANDLE) : GetStdHandle(STD_ERROR_HANDLE);
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if (handle == INVALID_HANDLE_VALUE) {
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mark_failed_with_errno(env, "could not get console handle", result);
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return NULL;
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}
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return handle;
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}
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JNIEXPORT jboolean JNICALL
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Java_net_rubygrapefruit_platform_internal_jni_WindowsConsoleFunctions_isConsole(JNIEnv *env, jclass target, jint output, jobject result) {
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CONSOLE_SCREEN_BUFFER_INFO console_info;
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HANDLE handle = getHandle(env, output, result);
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if (handle == NULL) {
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return JNI_FALSE;
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}
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if (!GetConsoleScreenBufferInfo(handle, &console_info)) {
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if (GetLastError() == ERROR_INVALID_HANDLE) {
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return JNI_FALSE;
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}
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mark_failed_with_errno(env, "could not get console buffer", result);
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return JNI_FALSE;
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}
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return JNI_TRUE;
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}
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JNIEXPORT void JNICALL
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Java_net_rubygrapefruit_platform_internal_jni_WindowsConsoleFunctions_getConsoleSize (JNIEnv *env, jclass target, jint output, jobject dimension, jobject result) {
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CONSOLE_SCREEN_BUFFER_INFO console_info;
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HANDLE handle = getHandle(env, output, result);
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if (handle == NULL) {
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mark_failed_with_message(env, "not a terminal", result);
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return;
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}
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if (!GetConsoleScreenBufferInfo(handle, &console_info)) {
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mark_failed_with_errno(env, "could not get console buffer", result);
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return;
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}
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jclass dimensionClass = env->GetObjectClass(dimension);
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jfieldID widthField = env->GetFieldID(dimensionClass, "cols", "I");
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env->SetIntField(dimension, widthField, console_info.srWindow.Right - console_info.srWindow.Left + 1);
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jfieldID heightField = env->GetFieldID(dimensionClass, "rows", "I");
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env->SetIntField(dimension, heightField, console_info.srWindow.Bottom - console_info.srWindow.Top + 1);
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}
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#endif
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