src/share/native/java/util/zip/Adler32.c

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  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * Native method support for java.util.zip.Adler32
  28  */
  29 
  30 #include "jni.h"
  31 #include "jni_util.h"
  32 #include "zlib.h"
  33 #include "jlong.h"

  34 
  35 #include "java_util_zip_Adler32.h"
  36 
  37 JNIEXPORT jint JNICALL
  38 Java_java_util_zip_Adler32_update(JNIEnv *env, jclass cls, jint adler, jint b)
  39 {
  40     Bytef buf[1];
  41 
  42     buf[0] = (Bytef)b;
  43     return adler32(adler, buf, 1);
  44 }
  45 
  46 JNIEXPORT jint JNICALL
  47 Java_java_util_zip_Adler32_updateBytes(JNIEnv *env, jclass cls, jint adler,
  48                                        jarray b, jint off, jint len)
  49 {
  50     Bytef *buf = (*env)->GetPrimitiveArrayCritical(env, b, 0);
  51     if (buf) {
  52         adler = adler32(adler, buf + off, len);
  53         (*env)->ReleasePrimitiveArrayCritical(env, b, buf, 0);


  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * Native method support for java.util.zip.Adler32
  28  */
  29 
  30 #include "jni.h"
  31 #include "jni_util.h"

  32 #include "jlong.h"
  33 #include <zlib.h>
  34 
  35 #include "java_util_zip_Adler32.h"
  36 
  37 JNIEXPORT jint JNICALL
  38 Java_java_util_zip_Adler32_update(JNIEnv *env, jclass cls, jint adler, jint b)
  39 {
  40     Bytef buf[1];
  41 
  42     buf[0] = (Bytef)b;
  43     return adler32(adler, buf, 1);
  44 }
  45 
  46 JNIEXPORT jint JNICALL
  47 Java_java_util_zip_Adler32_updateBytes(JNIEnv *env, jclass cls, jint adler,
  48                                        jarray b, jint off, jint len)
  49 {
  50     Bytef *buf = (*env)->GetPrimitiveArrayCritical(env, b, 0);
  51     if (buf) {
  52         adler = adler32(adler, buf + off, len);
  53         (*env)->ReleasePrimitiveArrayCritical(env, b, buf, 0);