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103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Programmer: Raymond Lu
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* 1 April 2013
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*
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* Purpose: Tests the plugin module (H5PL)
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <hdf5.h>
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#define H5Z_FILTER_DYNLIB3 259
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#define SUFFIX_LEN 8
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#define GROUP_SUFFIX ".h5group"
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static size_t H5Z_filter_dynlib3(unsigned int flags, size_t cd_nelmts,
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const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
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/* This message derives from H5Z */
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const H5Z_class2_t H5Z_DYNLIB3[1] = {{
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H5Z_CLASS_T_VERS, /* H5Z_class_t version */
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H5Z_FILTER_DYNLIB3, /* Filter id number */
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1, 1, /* Encoding and decoding enabled */
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"dynlib3", /* Filter name for debugging */
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NULL, /* The "can apply" callback */
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NULL, /* The "set local" callback */
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(H5Z_func_t)H5Z_filter_dynlib3, /* The actual filter function */
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}};
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const H5PL_type_t H5PL_get_plugin_type(void) {return H5PL_TYPE_FILTER;}
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const H5Z_class2_t* H5PL_get_plugin_info(void) {return H5Z_DYNLIB3;}
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/*-------------------------------------------------------------------------
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* Function: H5Z_filter_dynlib3
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*
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* Purpose: A dynlib3 filter method that is used to test groups. It
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* appends the suffix ".h5group" to each group name during
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* write and takes it out during read.
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*
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* Return: Success: Data chunk size
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*
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* Failure: 0
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*
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* Programmer: Raymond Lu
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* 1 April 2013
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*
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*-------------------------------------------------------------------------
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*/
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static size_t
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H5Z_filter_dynlib3(unsigned int flags, size_t cd_nelmts,
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const unsigned int *cd_values, size_t nbytes,
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size_t *buf_size, void **buf)
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{
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size_t ret_value; /* Return value */
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/* Check for the correct number of parameters */
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if(cd_nelmts>0)
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return(0);
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if(flags & H5Z_FLAG_REVERSE) { /*read*/
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ret_value = *buf_size = nbytes - SUFFIX_LEN;
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} else { /*write*/
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void *outbuf = NULL; /* Pointer to new buffer */
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unsigned char *dst; /* Temporary pointer to destination buffer */
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dst=outbuf=malloc(nbytes+SUFFIX_LEN);
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/* Copy raw data */
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memcpy((void*)dst, (void*)(*buf), nbytes);
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/* Append suffix to raw data for storage */
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dst += nbytes;
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memcpy((void*)dst, (void*)GROUP_SUFFIX, SUFFIX_LEN);
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/* Free input buffer */
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free(*buf);
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/* Set return values */
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*buf_size = nbytes + SUFFIX_LEN;
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*buf = outbuf;
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outbuf = NULL;
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ret_value = *buf_size;
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} /* end else */
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return ret_value;
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}
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