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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* 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 files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. 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 <hdf5.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 */
}};
const H5PL_type_t H5PL_get_plugin_type(void) {return H5PL_TYPE_FILTER;}
const H5Z_class2_t* H5PL_get_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);
if(flags & H5Z_FLAG_REVERSE) { /*read*/
ret_value = *buf_size = nbytes - SUFFIX_LEN;
} else { /*write*/
void *outbuf = NULL; /* Pointer to new buffer */
unsigned char *dst; /* Temporary pointer to destination buffer */
dst=outbuf=malloc(nbytes+SUFFIX_LEN);
/* Copy raw data */
memcpy((void*)dst, (void*)(*buf), nbytes);
/* Append suffix to raw data for storage */
dst += nbytes;
memcpy((void*)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;
}
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