/*

 * Copyright (c) 1997, 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.

 */

/*

 * Native method support for java.util.zip.Adler32

 */

#include "jni.h"

#include "jni_util.h"

#include "zlib.h"

#include "java_util_zip_Adler32.h"

JNIEXPORT jint JNICALL

Java_java_util_zip_Adler32_update(JNIEnv *env, jclass cls, jint adler, jint b)

{

    Bytef buf[1];

    buf[0] = (Bytef)b;

    return adler32(adler, buf, 1);

}

JNIEXPORT jint JNICALL

Java_java_util_zip_Adler32_updateBytes(JNIEnv *env, jclass cls, jint adler,

                                       jarray b, jint off, jint len)

{

    Bytef *buf = (*env)->GetPrimitiveArrayCritical(env, b, 0);

    if (buf) {

        adler = adler32(adler, buf + off, len);

        (*env)->ReleasePrimitiveArrayCritical(env, b, buf, 0);

    }

    return adler;

}