summaryrefslogtreecommitdiffstats
path: root/c++/src/H5Object.cpp
blob: 94b03abffb73668c21d12aa4246b7b1d767242c2 (plain)
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
182
183
184
185
186
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <string>

#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5PropList.h"
#include "H5Object.h"
#include "H5DcreatProp.h"
#include "H5DxferProp.h"
#include "H5FaccProp.h"
#include "H5FcreatProp.h"
#include "H5CommonFG.h"
#include "H5DataType.h"
#include "H5DataSpace.h"
#include "H5AbstractDs.h"
#include "H5File.h"
#include "H5DataSet.h"
#include "H5Attribute.h"
#include "H5private.h"		// for HDmemset

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:	H5Object default constructor (protected)
// Programmer	Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Object::H5Object() : H5Location() {}

//--------------------------------------------------------------------------
// Function:	H5Object overloaded constructor (protected)
// Purpose	Creates an H5Object object using the id of an existing HDF5
// 		object.
// Parameters	object_id - IN: Id of an existing HDF5 object
// Programmer	Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Object::H5Object( const hid_t object_id ) : H5Location( object_id ) {}

//--------------------------------------------------------------------------
// Function:    getObjName
///\brief       Given an id, returns the type of the object.
///\return      The name of the object
// Programmer   Binh-Minh Ribler - Mar, 2014
//--------------------------------------------------------------------------
ssize_t H5Object::getObjName(char *obj_name, size_t buf_size) const
{
    // H5Iget_name will get buf_size-1 chars of the name to null terminate it
    ssize_t name_size = H5Iget_name(getId(), obj_name, buf_size);

    // If H5Iget_name returns a negative value, raise an exception
    if (name_size < 0)
    {
        throw Exception(inMemFunc("getObjName"), "H5Iget_name failed");
    }
    else if (name_size == 0)
    {
        throw Exception(inMemFunc("getObjName"), "Object must have a name, but name length is 0");
    }
    // Return length of the name
    return(name_size);
}

//--------------------------------------------------------------------------
// Function:    H5Object::getObjName
///\brief       Returns the name of this object as an \a H5std_string.
///\return      Name of the object
///\exception   H5::Exception
// Programmer   Binh-Minh Ribler - Mar, 2014
// Modification
//--------------------------------------------------------------------------
H5std_string H5Object::getObjName() const
{
    H5std_string obj_name(""); // object name to return

    // Preliminary call to get the size of the object name
    ssize_t name_size = H5Iget_name(getId(), NULL, (size_t)0);

    // If H5Iget_name failed, throw exception
    if (name_size < 0)
    {
        throw Exception(inMemFunc("getObjName"), "H5Iget_name failed");
    }
    else if (name_size == 0)
    {
        throw Exception(inMemFunc("getObjName"), "Object must have a name, but name length is 0");
    }
    // Object's name exists, retrieve it
    else if (name_size > 0)
    {
        char* name_C = new char[name_size+1];  // temporary C-string
        HDmemset(name_C, 0, name_size+1); // clear buffer

        // Use overloaded function
        name_size = getObjName(name_C, name_size+1);

        // Convert the C object name to return
        obj_name = name_C;

        // Clean up resource
        delete []name_C;
    }
    // Return object's name
    return(obj_name);
}

//--------------------------------------------------------------------------
// Function:    H5Object::getObjName
///\brief       Gets the name of this object, returning its length.
///\param       obj_name - OUT: Buffer for the name string as \a H5std_string
///\param       len  -  IN: Desired length of the name, default to 0
///\return      Actual length of the object name
///\exception   H5::Exception
///\par Description
///             This function retrieves the object's name as an std string.
///             buf_size can specify a specific length or default to 0, in
///             which case the entire name will be retrieved.
// Programmer   Binh-Minh Ribler - Mar, 2014
//--------------------------------------------------------------------------
ssize_t H5Object::getObjName(H5std_string& obj_name, size_t len) const
{
    ssize_t name_size = 0;

    // If no length is provided, get the entire object name
    if (len == 0)
    {
        obj_name = getObjName();
        name_size = obj_name.length();
    }
    // If length is provided, get that number of characters in name
    else
    {
        char* name_C = new char[len+1];  // temporary C-string
        HDmemset(name_C, 0, len+1); // clear buffer

        // Use overloaded function
        name_size = getObjName(name_C, len+1);

        // Convert the C object name to return
        obj_name = name_C;

        // Clean up resource
        delete []name_C;
    }
    // Otherwise, keep obj_name intact

    // Return name size
    return(name_size);
}

//--------------------------------------------------------------------------
// Function:	H5Object copy constructor
///\brief	Copy constructor: makes a copy of the original H5Object
///		instance.
///\param	original - IN: H5Object instance to copy
// Programmer	Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Object::H5Object( const H5Object& original ) : H5Location( original ) {}

//--------------------------------------------------------------------------
// Function:	H5Object destructor
///\brief	Noop destructor.
// Programmer	Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Object::~H5Object() {}
#endif // DOXYGEN_SHOULD_SKIP_THIS

#ifndef H5_NO_NAMESPACE
} // end namespace
#endif