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, 26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 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#ifndef INCLUDED_IMF_STD_IO_H 37#define INCLUDED_IMF_STD_IO_H 38 39//----------------------------------------------------------------------------- 40// 41// Low-level file input and output for OpenEXR 42// based on C++ standard iostreams. 43// 44//----------------------------------------------------------------------------- 45 46#include <ImfIO.h> 47#include <fstream> 48#include <sstream> 49 50namespace Imf { 51 52//------------------------------------------- 53// class StdIFStream -- an implementation of 54// class IStream based on class std::ifstream 55//------------------------------------------- 56 57class StdIFStream: public IStream 58{ 59 public: 60 61 //------------------------------------------------------- 62 // A constructor that opens the file with the given name. 63 // The destructor will close the file. 64 //------------------------------------------------------- 65 66 StdIFStream (const char fileName[]); 67 68 69 //--------------------------------------------------------- 70 // A constructor that uses a std::ifstream that has already 71 // been opened by the caller. The StdIFStream's destructor 72 // will not close the std::ifstream. 73 //--------------------------------------------------------- 74 75 StdIFStream (std::ifstream &is, const char fileName[]); 76 77 78 virtual ~StdIFStream (); 79 80 virtual bool read (char c[/*n*/], int n); 81 virtual Int64 tellg (); 82 virtual void seekg (Int64 pos); 83 virtual void clear (); 84 85 private: 86 87 std::ifstream * _is; 88 bool _deleteStream; 89}; 90 91 92//------------------------------------------- 93// class StdOFStream -- an implementation of 94// class OStream based on class std::ofstream 95//------------------------------------------- 96 97class StdOFStream: public OStream 98{ 99 public: 100 101 //------------------------------------------------------- 102 // A constructor that opens the file with the given name. 103 // The destructor will close the file. 104 //------------------------------------------------------- 105 106 StdOFStream (const char fileName[]); 107 108 109 //--------------------------------------------------------- 110 // A constructor that uses a std::ofstream that has already 111 // been opened by the caller. The StdOFStream's destructor 112 // will not close the std::ofstream. 113 //--------------------------------------------------------- 114 115 StdOFStream (std::ofstream &os, const char fileName[]); 116 117 118 virtual ~StdOFStream (); 119 120 virtual void write (const char c[/*n*/], int n); 121 virtual Int64 tellp (); 122 virtual void seekp (Int64 pos); 123 124 private: 125 126 std::ofstream * _os; 127 bool _deleteStream; 128}; 129 130 131//------------------------------------------------ 132// class StdOSStream -- an implementation of class 133// OStream, based on class std::ostringstream 134//------------------------------------------------ 135 136class StdOSStream: public OStream 137{ 138 public: 139 140 StdOSStream (); 141 142 virtual void write (const char c[/*n*/], int n); 143 virtual Int64 tellp (); 144 virtual void seekp (Int64 pos); 145 146 std::string str () const {return _os.str();} 147 148 private: 149 150 std::ostringstream _os; 151}; 152 153 154} // namespace Imf 155 156#endif 157