core/org.eclipse.cdt.core.native/native_src/unix/ptyio.c

/*******************************************************************************
 * Copyright (c) 2002 - 2005 QNX Software Systems and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     QNX Software Systems - initial API and implementation
 *******************************************************************************/
#include <jni.h>
#include <stdio.h>
#include <org_eclipse_cdt_utils_pty_PTYInputStream.h>
#include <org_eclipse_cdt_utils_pty_PTYOutputStream.h>
#include <unistd.h>

/* Header for class _org_eclipse_cdt_utils_pty_PTYInputStream */
/* Header for class _org_eclipse_cdt_utils_pty_PTYOutputStream */

/*
 * Class:     org_eclipse_cdt_utils_pty_PTYInputStream
 * Method:    read0
 * Signature: (I)I
 */
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_pty_PTYInputStream_read0(JNIEnv *env, jobject jobj, jint jfd, jbyteArray buf, jint buf_len) {
	int fd;
	int status;
	jbyte *data;
	int data_len;

	data = (*env)->GetByteArrayElements(env, buf, 0);
	data_len = buf_len;
	fd = jfd;

	status = read(fd, data, data_len);
	(*env)->ReleaseByteArrayElements(env, buf, data, 0);

	if (status == 0) {
		/* EOF. */
		status = -1;
	} else if (status == -1) {
		/* Error, toss an exception */
		/* Ignore the error for now, the debugger will attempt
		 * to close this multiple time.  */
#if 0
        jclass exception = (*env)->FindClass(env, "java/io/IOException");
        if (exception == NULL) {
            /* Give up.  */
            return -1;
        }
        (*env)->ThrowNew(env, exception, "read error");
#endif
	}

	return status;
}

/*
 * Class:     org_eclipse_cdt_utils_pty_PTYInputStream
 * Method:    close0
 * Signature: (I)I
 */
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_pty_PTYInputStream_close0(JNIEnv *env, jobject jobj, jint fd) {
	return close(fd);
}

/*
 * Class:     org_eclipse_cdt_utils_pty_PTYOutputStream
 * Method:    write0
 * Signature: (II)I
 */
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_pty_PTYOutputStream_write0(JNIEnv *env, jobject jobj, jint jfd, jbyteArray buf, jint buf_len) {
	int status;
	int fd;
	jbyte *data;
	int data_len;

	data = (*env)->GetByteArrayElements(env, buf, 0);
	data_len = buf_len;
	fd = jfd;

	status = write(fd, data, data_len);
	(*env)->ReleaseByteArrayElements(env, buf, data, 0);

	return status;
}

/*
 * Class:     org_eclipse_cdt_utils_pty_PTYOutputStream
 * Method:    close0
 * Signature: (I)I
 */
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_pty_PTYOutputStream_close0(JNIEnv *env, jobject jobj, jint fd) {
	return close(fd);
}