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