1///////////////////////////////////////////////////////////////////////////
2//
3// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
4// Digital Ltd. LLC
5//
6// All rights reserved.
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions are
10// met:
11// *       Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// *       Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17// *       Neither the name of Industrial Light & Magic nor the names of
18// its contributors may be used to endorse or promote products derived
19// from this software without specific prior written permission.
20//
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33///////////////////////////////////////////////////////////////////////////
34
35
36
37//-----------------------------------------------------------------------------
38//
39//	class OpaqueAttribute
40//
41//-----------------------------------------------------------------------------
42
43#include <ImfOpaqueAttribute.h>
44#include "Iex.h"
45#include <string.h>
46
47namespace Imf {
48
49
50OpaqueAttribute::OpaqueAttribute (const char typeName[]):
51    _typeName (strlen (typeName) + 1),
52    _dataSize (0)
53{
54    strcpy (_typeName, typeName);
55}
56
57
58OpaqueAttribute::OpaqueAttribute (const OpaqueAttribute &other):
59    _typeName (strlen (other._typeName) + 1),
60    _dataSize (other._dataSize),
61    _data (other._dataSize)
62{
63    strcpy (_typeName, other._typeName);
64    _data.resizeErase (other._dataSize);
65    memcpy ((char *) _data, (const char *) other._data, other._dataSize);
66}
67
68
69OpaqueAttribute::~OpaqueAttribute ()
70{
71    // empty
72}
73
74
75const char *
76OpaqueAttribute::typeName () const
77{
78    return _typeName;
79}
80
81
82Attribute *
83OpaqueAttribute::copy () const
84{
85    return new OpaqueAttribute (*this);
86}
87
88
89void
90OpaqueAttribute::writeValueTo (OStream &os, int version) const
91{
92    Xdr::write <StreamIO> (os, _data, _dataSize);
93}
94
95
96void
97OpaqueAttribute::readValueFrom (IStream &is, int size, int version)
98{
99    _data.resizeErase (size);
100    _dataSize = size;
101    Xdr::read <StreamIO> (is, _data, size);
102}
103
104
105void
106OpaqueAttribute::copyValueFrom (const Attribute &other)
107{
108    const OpaqueAttribute *oa = dynamic_cast <const OpaqueAttribute *> (&other);
109
110    if (oa == 0 || strcmp (_typeName, oa->_typeName))
111    {
112	THROW (Iex::TypeExc, "Cannot copy the value of an "
113			     "image file attribute of type "
114			     "\"" << other.typeName() << "\" "
115			     "to an attribute of type "
116			     "\"" << _typeName << "\".");
117    }
118
119    _data.resizeErase (oa->_dataSize);
120    _dataSize = oa->_dataSize;
121    memcpy ((char *) _data, (const char *) oa->_data, oa->_dataSize);
122}
123
124
125} // namespace Imf
126