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/*
* Copyright 2007 - 2018 ETH Zuerich, CISD and SIS.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "hdf5.h"
#include <jni.h>
#include "h5jni.h"
#include <stdlib.h>
#include <string.h>
/*
* Class: ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper
* Method: getPointerSize
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper_getPointerSize
(JNIEnv *env, jclass clss)
{
return sizeof(void *);
}
/*
* Class: ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper
* Method: compoundCpyVLStr
* Signature: (Ljava/lang/String;[B)I)I
*/
JNIEXPORT jint JNICALL Java_ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper_compoundCpyVLStr
(JNIEnv *env,
jclass clss,
jstring str, /* IN: the string to copy */
jbyteArray buf, /* OUT: array of byte */
jint bufOfs /* The offset to copy the pointer to the string to. */
)
{
jbyte *byteP;
char *strPCpy;
int numberOfBytes, numberOfCharacters;
if ( str == NULL ) {
h5nullArgument( env, "compoundCpyVLStr: str is NULL");
return -1;
}
if ( buf == NULL ) {
h5nullArgument( env, "compoundCpyVLStr: buf is NULL");
return -1;
}
numberOfBytes = (*env)->GetStringUTFLength(env, str);
strPCpy = calloc(1, numberOfBytes + 1);
numberOfCharacters = (*env)->GetStringLength(env, str);
(*env)->GetStringUTFRegion(env, str, 0, numberOfCharacters, strPCpy);
byteP = (*env)->GetPrimitiveArrayCritical(env, buf, NULL);
if (byteP == NULL) {
h5JNIFatalError( env, "compoundCpyVLStr: buf not pinned");
return -1;
}
*((char**)(byteP + bufOfs)) = strPCpy;
(*env)->ReleasePrimitiveArrayCritical(env, buf, byteP, 0);
return 0;
}
/*
* Class: ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper
* Method: createVLStrFromCompound
* Signature: ([B)I)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper_createVLStrFromCompound
(JNIEnv *env,
jclass clss,
jbyteArray buf, /* IN: array of byte containing the compound or compound array. */
jint offset /* IN: The offset in the compound or compound array where the pointer to the string is located. */
)
{
char *byteP;
char **strP;
jstring str;
if ( buf == NULL ) {
h5nullArgument( env, "createVLStrFromCompound: buf is NULL");
return NULL;
}
byteP = (*env)->GetPrimitiveArrayCritical(env, buf, NULL);
if (byteP == NULL) {
h5JNIFatalError( env, "createVLStrFromCompound: buf not pinned");
return NULL;
}
strP = (char**) (byteP + offset);
str = (*env)->NewStringUTF(env, *strP);
(*env)->ReleasePrimitiveArrayCritical(env, buf, byteP, 0);
return str;
}
/*
* Class: ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper
* Method: freeCompoundVLStr
* Signature: ([B)I[I))I
*/
JNIEXPORT jint JNICALL Java_ch_systemsx_cisd_hdf5_hdf5lib_HDFHelper_freeCompoundVLStr
(JNIEnv *env,
jclass clss,
jbyteArray buf, /* IN: array of byte containing the compound or compound array. */
jint recordSize, /* IN: The size of one compound record. */
jintArray vlIndices /* IN: The indices of the variable-length compound members in the record. */
)
{
char *byteP, *ptr;
char **strP;
jsize bufLen, idxLen;
int *idxP, i;
if ( buf == NULL ) {
h5nullArgument( env, "freeCompoundVLStr: buf is NULL");
return -1;
}
if ( vlIndices == NULL ) {
h5nullArgument( env, "freeCompoundVLStr: vlIndices is NULL");
return -1;
}
idxLen = (*env)->GetArrayLength(env, vlIndices);
bufLen = (*env)->GetArrayLength(env, buf);
idxP = (*env)->GetPrimitiveArrayCritical(env, vlIndices, NULL);
if (idxP == NULL) {
h5JNIFatalError( env, "freeCompoundVLStr: vlIndices not pinned");
return -1;
}
byteP = (*env)->GetPrimitiveArrayCritical(env, buf, NULL);
if (byteP == NULL) {
(*env)->ReleasePrimitiveArrayCritical(env, vlIndices, idxP, 0);
h5JNIFatalError( env, "freeCompoundVLStr: buf not pinned");
return -1;
}
ptr = byteP;
while (ptr - byteP < bufLen)
{
for (i = 0; i < idxLen; ++i)
{
strP = (char**) (ptr + idxP[i]);
free(*strP);
}
ptr += recordSize;
}
(*env)->ReleasePrimitiveArrayCritical(env, vlIndices, idxP, 0);
(*env)->ReleasePrimitiveArrayCritical(env, buf, byteP, 0);
return 0;
}
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