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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Raymond Lu
* 1 April 2013
*
* Purpose: Tests the plugin module (H5PL)
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "H5PLextern.h"
#define H5Z_FILTER_DYNLIB3 259
#define SUFFIX_LEN 8
#define GROUP_SUFFIX ".h5group"
static size_t H5Z_filter_dynlib3(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values,
size_t nbytes, size_t *buf_size, void **buf);
/* This message derives from H5Z */
const H5Z_class2_t H5Z_DYNLIB3[1] = {{
H5Z_CLASS_T_VERS, /* H5Z_class_t version */
H5Z_FILTER_DYNLIB3, /* Filter id number */
1, 1, /* Encoding and decoding enabled */
"dynlib3", /* Filter name for debugging */
NULL, /* The "can apply" callback */
NULL, /* The "set local" callback */
(H5Z_func_t)H5Z_filter_dynlib3, /* The actual filter function */
}};
H5PL_type_t
H5PLget_plugin_type(void)
{
return H5PL_TYPE_FILTER;
}
const void *
H5PLget_plugin_info(void)
{
return H5Z_DYNLIB3;
}
/*-------------------------------------------------------------------------
* Function: H5Z_filter_dynlib3
*
* Purpose: A dynlib3 filter method that is used to test groups. It
* appends the suffix ".h5group" to each group name during
* write and takes it out during read.
*
* Return: Success: Data chunk size
*
* Failure: 0
*
* Programmer: Raymond Lu
* 1 April 2013
*
*-------------------------------------------------------------------------
*/
static size_t
H5Z_filter_dynlib3(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values, size_t nbytes,
size_t *buf_size, void **buf)
{
size_t ret_value; /* Return value */
/* Check for the correct number of parameters */
if (cd_nelmts > 0)
return (0);
/* Assignment to eliminate unused parameter warning. */
cd_values = cd_values;
if (flags & H5Z_FLAG_REVERSE) { /*read*/
ret_value = *buf_size = nbytes - SUFFIX_LEN;
} /* end if */
else { /*write*/
void * outbuf = NULL; /* Pointer to new buffer */
unsigned char *dst; /* Temporary pointer to destination buffer */
dst = (unsigned char *)(outbuf = malloc(nbytes + SUFFIX_LEN));
/* Copy raw data */
memcpy((void *)dst, (void *)(*buf), nbytes);
/* Append suffix to raw data for storage */
dst += nbytes;
memcpy(dst, (void *)GROUP_SUFFIX, SUFFIX_LEN);
/* Free input buffer */
free(*buf);
/* Set return values */
*buf_size = nbytes + SUFFIX_LEN;
*buf = outbuf;
outbuf = NULL;
ret_value = *buf_size;
} /* end else */
return ret_value;
} /* H5Z_filter_dynlib3() */
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