1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Purpose: Test group filter plugin for the filter_pluging.c test.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "H5PLextern.h"
#define FILTER4_ID 260
#define SUFFIX_LEN 8
#define GROUP_SUFFIX ".h5group"
static size_t append_to_group_name(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values,
size_t nbytes, size_t *buf_size, void **buf);
/* Filter class struct */
const H5Z_class2_t FILTER_INFO[1] = {{
H5Z_CLASS_T_VERS, /* H5Z_class_t version */
FILTER4_ID, /* Filter ID number */
1, /* Encoding enabled */
1, /* Decoding enabled */
"test filter plugin 4", /* Filter name for debugging */
NULL, /* The "can apply" callback */
NULL, /* The "set local" callback */
append_to_group_name, /* The actual filter function */
}};
H5PL_type_t
H5PLget_plugin_type(void)
{
return H5PL_TYPE_FILTER;
}
const void *
H5PLget_plugin_info(void)
{
return FILTER_INFO;
}
/*-------------------------------------------------------------------------
* Function: append_to_group_name
*
* Purpose: On write:
* Appends the suffix ".h5group" to the group name
* On read:
* Removes the ".h5group" suffix from the group name
*
* Return: Success: Data size in bytes
* Failure: 0
*
*-------------------------------------------------------------------------
*/
static size_t
append_to_group_name(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values, size_t nbytes,
size_t *buf_size, void **buf)
{
size_t new_name_size = 0; /* Return value */
/* Check for the correct number of parameters */
if (cd_nelmts > 0)
return 0;
/* Assignment to eliminate unused parameter warning. */
(void)cd_values;
if (flags & H5Z_FLAG_REVERSE) {
/* READ - Remove the suffix from the group name */
new_name_size = *buf_size = nbytes - SUFFIX_LEN;
}
else {
/* WRITE - Append the suffix to the group name */
void * outbuf = NULL; /* Pointer to new buffer */
unsigned char *dst = NULL; /* Temporary pointer to destination buffer */
/* Get memory for the new, larger string buffer using the
* library's memory allocator.
*/
if (NULL == (dst = (unsigned char *)(outbuf = H5allocate_memory(nbytes + SUFFIX_LEN, 0))))
return 0;
/* Copy raw data */
memcpy((void *)dst, (const void *)(*buf), nbytes);
/* Append suffix to raw data for storage */
dst += nbytes;
memcpy((void *)dst, (const void *)GROUP_SUFFIX, SUFFIX_LEN);
/* Free the passed-in buffer using the library's allocator */
H5free_memory(*buf);
/* Set return values */
*buf_size = nbytes + SUFFIX_LEN;
*buf = outbuf;
outbuf = NULL;
new_name_size = *buf_size;
}
return new_name_size;
} /* append_to_group_name() */
|
