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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
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1 /*
2 Open Asset Import Library (assimp)
3 ----------------------------------------------------------------------
4
5 Copyright (c) 2006-2012, assimp team
6 All rights reserved.
7
8 Redistribution and use of this software in source and binary forms,
9 with or without modification, are permitted provided that the
10 following conditions are met:
11
12 * Redistributions of source code must retain the above
13 copyright notice, this list of conditions and the
14 following disclaimer.
15
16 * Redistributions in binary form must reproduce the above
17 copyright notice, this list of conditions and the
18 following disclaimer in the documentation and/or other
19 materials provided with the distribution.
20
21 * Neither the name of the assimp team, nor the names of its
22 contributors may be used to endorse or promote products
23 derived from this software without specific prior
24 written permission of the assimp team.
25
26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37
38 ----------------------------------------------------------------------
39 */
40
41 /** @file Default file I/O using fXXX()-family of functions */
42 #ifndef AI_DEFAULTIOSTREAM_H_INC
43 #define AI_DEFAULTIOSTREAM_H_INC
44
45 #include <stdio.h>
46 #include "assimp/IOStream.hpp"
47
48 namespace Assimp {
49
50 // ----------------------------------------------------------------------------------
51 //! @class DefaultIOStream
52 //! @brief Default IO implementation, use standard IO operations
53 //! @note An instance of this class can exist without a valid file handle
54 //! attached to it. All calls fail, but the instance can nevertheless be
55 //! used with no restrictions.
56 class DefaultIOStream : public IOStream
57 {
58 friend class DefaultIOSystem;
59
60 protected:
61 DefaultIOStream ();
62 DefaultIOStream (FILE* pFile, const std::string &strFilename);
63
64 public:
65 /** Destructor public to allow simple deletion to close the file. */
66 ~DefaultIOStream ();
67
68 // -------------------------------------------------------------------
69 // Read from stream
70 size_t Read(void* pvBuffer,
71 size_t pSize,
72 size_t pCount);
73
74
75 // -------------------------------------------------------------------
76 // Write to stream
77 size_t Write(const void* pvBuffer,
78 size_t pSize,
79 size_t pCount);
80
81 // -------------------------------------------------------------------
82 // Seek specific position
83 aiReturn Seek(size_t pOffset,
84 aiOrigin pOrigin);
85
86 // -------------------------------------------------------------------
87 // Get current seek position
88 size_t Tell() const;
89
90 // -------------------------------------------------------------------
91 // Get size of file
92 size_t FileSize() const;
93
94 // -------------------------------------------------------------------
95 // Flush file contents
96 void Flush();
97
98 private:
99 //! File datastructure, using clib
100 FILE* mFile;
101 //! Filename
102 std::string mFilename;
103
104 //! Cached file size
105 mutable size_t cachedSize;
106 };
107
108
109 // ----------------------------------------------------------------------------------
110 inline DefaultIOStream::DefaultIOStream () :
111 mFile (NULL),
112 mFilename (""),
113 cachedSize (SIZE_MAX)
114 {
115 // empty
116 }
117
118
119 // ----------------------------------------------------------------------------------
120 inline DefaultIOStream::DefaultIOStream (FILE* pFile,
121 const std::string &strFilename) :
122 mFile(pFile),
123 mFilename(strFilename),
124 cachedSize (SIZE_MAX)
125 {
126 // empty
127 }
128 // ----------------------------------------------------------------------------------
129
130 } // ns assimp
131
132 #endif //!!AI_DEFAULTIOSTREAM_H_INC
133