/*
* Copyright ( c ) 1997 , 2012 , 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 "jlong.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;
}
JNIEXPORT jint JNICALL
Java_java_util_zip_Adler32_updateByteBuffer(JNIEnv *env, jclass cls, jint adler,
jlong address, jint off, jint len)
{
Bytef *buf = (Bytef *)jlong_to_ptr(address);
if (buf) {
adler = adler32(adler, buf + off, len);
}
return adler;
}
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