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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/****************/
/* Module Setup */
/****************/
#define H5O_PACKAGE /*suppress error about including H5Opkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Iprivate.h" /* IDs */
#include "H5Opkg.h" /* Object headers */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
static htri_t H5O_dtype_isa(H5O_t *loc);
static hid_t H5O_dtype_open(H5G_loc_t *obj_loc, hid_t dxpl_id);
static H5O_loc_t *H5O_dtype_get_oloc(hid_t obj_id);
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* This message derives from H5O object class */
const H5O_obj_class_t H5O_OBJ_DATATYPE[1] = {{
H5O_TYPE_NAMED_DATATYPE, /* object type */
"named datatype", /* object name, for debugging */
NULL, /* get 'copy file' user data */
NULL, /* free 'copy file' user data */
H5O_dtype_isa, /* "isa" */
H5O_dtype_open, /* open an object of this class */
H5O_dtype_get_oloc /* get an object header location for an object */
}};
/*-------------------------------------------------------------------------
* Function: H5O_dtype_isa
*
* Purpose: Determines if an object has the requisite messages for being
* a datatype.
*
* Return: Success: TRUE if the required data type messages are
* present; FALSE otherwise.
*
* Failure: FAIL if the existence of certain messages
* cannot be determined.
*
* Programmer: Robb Matzke
* Monday, November 2, 1998
*
*-------------------------------------------------------------------------
*/
htri_t
H5O_dtype_isa(struct H5O_t *oh)
{
htri_t ret_value; /* Return value */
FUNC_ENTER_NOAPI(H5O_dtype_isa, FAIL)
HDassert(oh);
if((ret_value = H5O_exists_oh(oh, H5O_DTYPE_ID, 0)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to read object header")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_dtype_isa() */
/*-------------------------------------------------------------------------
* Function: H5O_dtype_open
*
* Purpose: Open a datatype at a particular location
*
* Return: Success: Open object identifier
* Failure: Negative
*
* Programmer: Quincey Koziol
* Monday, November 6, 2006
*
*-------------------------------------------------------------------------
*/
static hid_t
H5O_dtype_open(H5G_loc_t *obj_loc, hid_t dxpl_id)
{
H5T_t *type = NULL; /* Datatype opened */
hid_t ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5O_dtype_open)
HDassert(obj_loc);
/* Open the datatype */
if((type = H5T_open(obj_loc, dxpl_id)) == NULL)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open datatype")
/* Register an ID for the datatype */
if((ret_value = H5I_register(H5I_DATATYPE, type)) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype")
done:
if(ret_value < 0)
if(type != NULL)
H5T_close(type);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_dtype_open() */
/*-------------------------------------------------------------------------
* Function: H5O_dtype_get_oloc
*
* Purpose: Retrieve the object header location for an open object
*
* Return: Success: Pointer to object header location
* Failure: NULL
*
* Programmer: Quincey Koziol
* Monday, November 6, 2006
*
*-------------------------------------------------------------------------
*/
static H5O_loc_t *
H5O_dtype_get_oloc(hid_t obj_id)
{
H5T_t *type; /* Datatype opened */
H5O_loc_t *ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5O_dtype_get_oloc)
/* Get the datatype */
if((type = H5I_object(obj_id)) == NULL)
HGOTO_ERROR(H5E_OHDR, H5E_BADATOM, NULL, "couldn't get object from ID")
/* Get the datatype's object header location */
if((ret_value = H5T_oloc(type)) == NULL)
HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, NULL, "unable to get object location from object")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O_dtype_get_oloc() */
|
