1 /******************************************************************************* 2 * Project: libopencad 3 * Purpose: OpenSource CAD formats support library 4 * Author: Alexandr Borzykh, mush3d at gmail.com 5 * Author: Dmitry Baryshnikov, bishop.dev@gmail.com 6 * Language: C++ 7 ******************************************************************************* 8 * The MIT License (MIT) 9 * 10 * Copyright (c) 2016 Alexandr Borzykh 11 * Copyright (c) 2016-2019 NextGIS, <info@nextgis.com> 12 * 13 * Permission is hereby granted, free of charge, to any person obtaining a copy 14 * of this software and associated documentation files (the "Software"), to deal 15 * in the Software without restriction, including without limitation the rights 16 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 17 * copies of the Software, and to permit persons to whom the Software is 18 * furnished to do so, subject to the following conditions: 19 * 20 * The above copyright notice and this permission notice shall be included in all 21 * copies or substantial portions of the Software. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 26 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 28 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 29 * SOFTWARE. 30 ******************************************************************************/ 31 #ifndef CADFILEIO_H 32 #define CADFILEIO_H 33 34 #include "opencad.h" 35 36 #include <cstddef> 37 #include <string> 38 39 /** 40 * @brief The CADFileIO class provides in/out file operations as read, write, 41 * seek, etc. This is abstract class. 42 */ 43 class OCAD_EXTERN CADFileIO 44 { 45 public: 46 enum class SeekOrigin 47 { 48 BEG, /**< Begin of the file */ 49 CUR, /**< Current position of the pointer */ 50 END /**< End of file */ 51 }; 52 53 enum OpenMode 54 { 55 binary = 1L << 2, 56 in = 1L << 3, 57 out = 1L << 4 58 }; 59 60 public: 61 explicit CADFileIO( const char * pszFileName ); 62 virtual ~CADFileIO(); 63 64 virtual const char * ReadLine() = 0; 65 virtual bool Eof() const = 0; 66 virtual bool Open( int mode ) = 0; 67 virtual bool IsOpened() const; 68 virtual bool Close(); 69 virtual int Seek( long int offset, SeekOrigin origin ) = 0; 70 virtual long int Tell() = 0; 71 virtual size_t Read( void * ptr, size_t size ) = 0; 72 virtual size_t Write( void * ptr, size_t size ) = 0; 73 virtual void Rewind() = 0; 74 const char * GetFilePath() const; 75 76 protected: 77 std::string m_soFilePath; 78 bool m_bIsOpened; 79 }; 80 81 #endif // CADFILEIO_H 82