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.CRC32
28 */
29
30 #include "jni.h"
31 #include "jni_util.h"
32 #include "zlib.h"
33
34 #include "java_util_zip_CRC32.h"
35
36 JNIEXPORT jint JNICALL
37 Java_java_util_zip_CRC32_update(JNIEnv *env, jclass cls, jint crc, jint b)
38 {
39 Bytef buf[1];
40
41 buf[0] = (Bytef)b;
42 return crc32(crc, buf, 1);
43 }
44
45 JNIEXPORT jint JNICALL
46 Java_java_util_zip_CRC32_updateBytes(JNIEnv *env, jclass cls, jint crc,
47 jarray b, jint off, jint len)
48 {
49 Bytef *buf = (*env)->GetPrimitiveArrayCritical(env, b, 0);
50 if (buf) {
51 crc = crc32(crc, buf + off, len);
52 (*env)->ReleasePrimitiveArrayCritical(env, b, buf, 0);
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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.CRC32
28 */
29
30 #include "jni.h"
31 #include "jni_util.h"
32 #include <zlib.h>
33
34 #include "java_util_zip_CRC32.h"
35
36 JNIEXPORT jint JNICALL
37 Java_java_util_zip_CRC32_update(JNIEnv *env, jclass cls, jint crc, jint b)
38 {
39 Bytef buf[1];
40
41 buf[0] = (Bytef)b;
42 return crc32(crc, buf, 1);
43 }
44
45 JNIEXPORT jint JNICALL
46 Java_java_util_zip_CRC32_updateBytes(JNIEnv *env, jclass cls, jint crc,
47 jarray b, jint off, jint len)
48 {
49 Bytef *buf = (*env)->GetPrimitiveArrayCritical(env, b, 0);
50 if (buf) {
51 crc = crc32(crc, buf + off, len);
52 (*env)->ReleasePrimitiveArrayCritical(env, b, buf, 0);
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