1/*
2---------------------------------------------------------------------------
3Open Asset Import Library (assimp)
4---------------------------------------------------------------------------
5
6Copyright (c) 2006-2019, assimp team
7
8
9
10All rights reserved.
11
12Redistribution and use of this software in source and binary forms,
13with or without modification, are permitted provided that the following
14conditions are met:
15
16* Redistributions of source code must retain the above
17 copyright notice, this list of conditions and the
18 following disclaimer.
19
20* Redistributions in binary form must reproduce the above
21 copyright notice, this list of conditions and the
22 following disclaimer in the documentation and/or other
23 materials provided with the distribution.
24
25* Neither the name of the assimp team, nor the names of its
26 contributors may be used to endorse or promote products
27 derived from this software without specific prior
28 written permission of the assimp team.
29
30THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
31"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
32LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
33A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
34OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
36LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
37DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
38THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
39(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
40OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41---------------------------------------------------------------------------
42*/
43/** @file IOStream.hpp
44 * @brief File I/O wrappers for C++.
45 */
46
47#pragma once
48#ifndef AI_IOSTREAM_H_INC
49#define AI_IOSTREAM_H_INC
50
51#include "types.h"
52
53#ifndef __cplusplus
54# error This header requires C++ to be used. aiFileIO.h is the \
55 corresponding C interface.
56#endif
57
58namespace Assimp {
59
60// ----------------------------------------------------------------------------------
61/** @brief CPP-API: Class to handle file I/O for C++
62 *
63 * Derive an own implementation from this interface to provide custom IO handling
64 * to the Importer. If you implement this interface, be sure to also provide an
65 * implementation for IOSystem that creates instances of your custom IO class.
66*/
67class ASSIMP_API IOStream
68#ifndef SWIG
69 : public Intern::AllocateFromAssimpHeap
70#endif
71{
72protected:
73 /** Constructor protected, use IOSystem::Open() to create an instance. */
74 IOStream() AI_NO_EXCEPT;
75
76public:
77 // -------------------------------------------------------------------
78 /** @brief Destructor. Deleting the object closes the underlying file,
79 * alternatively you may use IOSystem::Close() to release the file.
80 */
81 virtual ~IOStream();
82
83 // -------------------------------------------------------------------
84 /** @brief Read from the file
85 *
86 * See fread() for more details
87 * This fails for write-only files */
88 virtual size_t Read(void* pvBuffer,
89 size_t pSize,
90 size_t pCount) = 0;
91
92 // -------------------------------------------------------------------
93 /** @brief Write to the file
94 *
95 * See fwrite() for more details
96 * This fails for read-only files */
97 virtual size_t Write(const void* pvBuffer,
98 size_t pSize,
99 size_t pCount) = 0;
100
101 // -------------------------------------------------------------------
102 /** @brief Set the read/write cursor of the file
103 *
104 * Note that the offset is _negative_ for aiOrigin_END.
105 * See fseek() for more details */
106 virtual aiReturn Seek(size_t pOffset,
107 aiOrigin pOrigin) = 0;
108
109 // -------------------------------------------------------------------
110 /** @brief Get the current position of the read/write cursor
111 *
112 * See ftell() for more details */
113 virtual size_t Tell() const = 0;
114
115 // -------------------------------------------------------------------
116 /** @brief Returns filesize
117 * Returns the filesize. */
118 virtual size_t FileSize() const = 0;
119
120 // -------------------------------------------------------------------
121 /** @brief Flush the contents of the file buffer (for writers)
122 * See fflush() for more details.
123 */
124 virtual void Flush() = 0;
125}; //! class IOStream
126
127// ----------------------------------------------------------------------------------
128inline
129IOStream::IOStream() AI_NO_EXCEPT {
130 // empty
131}
132
133// ----------------------------------------------------------------------------------
134inline
135IOStream::~IOStream() {
136 // empty
137}
138// ----------------------------------------------------------------------------------
139
140} //!namespace Assimp
141
142#endif //!!AI_IOSTREAM_H_INC
143

source code of qt3d/src/3rdparty/assimp/src/include/assimp/IOStream.hpp