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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Module Info: This module contains the functionality for setting & querying
* the datatype string padding for the H5T interface.
*/
#include "H5Tmodule.h" /* This source code file is part of the H5T module */
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Iprivate.h" /* IDs */
#include "H5Tpkg.h" /* Datatypes */
/*-------------------------------------------------------------------------
* Function: H5Tget_strpad
*
* Purpose: The method used to store character strings differs with the
* programming language: C usually null terminates strings while
* Fortran left-justifies and space-pads strings. This property
* defines the storage mechanism for the string.
*
* Return: Success: The character set of a string type.
*
* Failure: H5T_STR_ERROR (Negative)
*
* Programmer: Robb Matzke
* Friday, January 9, 1998
*
* Modifications:
* Robb Matzke, 22 Dec 1998
* Also works for derived datatypes.
*
*-------------------------------------------------------------------------
*/
H5T_str_t
H5Tget_strpad(hid_t type_id)
{
H5T_t *dt = NULL;
H5T_str_t ret_value;
FUNC_ENTER_API(H5T_STR_ERROR)
H5TRACE1("Tz", "i", type_id);
/* Check args */
if (NULL == (dt = (H5T_t *)H5I_object_verify(type_id,H5I_DATATYPE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5T_STR_ERROR, "not a datatype")
while (dt->shared->parent && !H5T_IS_STRING(dt->shared))
dt = dt->shared->parent; /*defer to parent*/
if (!H5T_IS_STRING(dt->shared))
HGOTO_ERROR(H5E_DATATYPE, H5E_UNSUPPORTED, H5T_STR_ERROR, "operation not defined for datatype class")
/* result */
if(H5T_IS_FIXED_STRING(dt->shared))
ret_value = dt->shared->u.atomic.u.s.pad;
else
ret_value = dt->shared->u.vlen.pad;
done:
FUNC_LEAVE_API(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5Tset_strpad
*
* Purpose: The method used to store character strings differs with the
* programming language: C usually null terminates strings while
* Fortran left-justifies and space-pads strings. This property
* defines the storage mechanism for the string.
*
* When converting from a long string to a short string if the
* short string is H5T_STR_NULLPAD or H5T_STR_SPACEPAD then the
* string is simply truncated; otherwise if the short string is
* H5T_STR_NULLTERM it will be truncated and a null terminator
* is appended.
*
* When converting from a short string to a long string, the
* long string is padded on the end by appending nulls or
* spaces.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, January 9, 1998
*
* Modifications:
* Robb Matzke, 22 Dec 1998
* Also works for derived datatypes.
*
*-------------------------------------------------------------------------
*/
herr_t
H5Tset_strpad(hid_t type_id, H5T_str_t strpad)
{
H5T_t *dt = NULL;
herr_t ret_value=SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "iTz", type_id, strpad);
/* Check args */
if (NULL == (dt = (H5T_t *)H5I_object_verify(type_id,H5I_DATATYPE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
if (H5T_STATE_TRANSIENT!=dt->shared->state)
HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
if (strpad < H5T_STR_NULLTERM || strpad >= H5T_NSTR)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "illegal string pad type")
while (dt->shared->parent && !H5T_IS_STRING(dt->shared))
dt = dt->shared->parent; /*defer to parent*/
if (!H5T_IS_STRING(dt->shared))
HGOTO_ERROR(H5E_DATATYPE, H5E_UNSUPPORTED, FAIL, "operation not defined for datatype class")
/* Commit */
if(H5T_IS_FIXED_STRING(dt->shared))
dt->shared->u.atomic.u.s.pad = strpad;
else
dt->shared->u.vlen.pad = strpad;
done:
FUNC_LEAVE_API(ret_value)
}
|
