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); 53 } 54 return crc; 55 } 56 57 JNIEXPORT jint JNICALL 58 ZIP_CRC32(jint crc, const jbyte *buf, jint len) 59 { 60 return crc32(crc, (Bytef*)buf, len); 61 } 62 63 JNIEXPORT jint JNICALL 64 Java_java_util_zip_CRC32_updateByteBuffer(JNIEnv *env, jclass cls, jint crc, 65 jlong address, jint off, jint len) 66 { 67 Bytef *buf = (Bytef *)jlong_to_ptr(address); 68 if (buf) { 69 crc = crc32(crc, buf + off, len); 70 } 71 return crc; 72 } | 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_updateBytes0(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); 53 } 54 return crc; 55 } 56 57 JNIEXPORT jint JNICALL 58 ZIP_CRC32(jint crc, const jbyte *buf, jint len) 59 { 60 return crc32(crc, (Bytef*)buf, len); 61 } 62 63 JNIEXPORT jint JNICALL 64 Java_java_util_zip_CRC32_updateByteBuffer0(JNIEnv *env, jclass cls, jint crc, 65 jlong address, jint off, jint len) 66 { 67 Bytef *buf = (Bytef *)jlong_to_ptr(address); 68 if (buf) { 69 crc = crc32(crc, buf + off, len); 70 } 71 return crc; 72 } |