1 /* Copyright (C) 2021-2024 Free Software Foundation, Inc. 2 Contributed by Oracle. 3 4 This file is part of GNU Binutils. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #ifndef _DATASTREAM_H 22 #define _DATASTREAM_H 23 24 #include "Data_window.h" 25 26 // sequential access to the file 27 class DataStream : public Data_window 28 { 29 public: 30 // Create an empty data window. 31 DataStream (char *file_name); 32 ~DataStream (); 33 void set_span (int64_t f_offset, int64_t sz); 34 int64_t read (void *buf, int64_t len); 35 36 template <typename Key_t> inline int64_t read(Key_t & val)37 read (Key_t &val) 38 { 39 int64_t sz = read (&val, sizeof (val)); 40 if (need_swap_endian && sz == sizeof (val)) 41 swapByteOrder (&val, sizeof (val)); 42 return sz; 43 } 44 45 private: 46 int64_t span_offset; 47 int64_t span_size; // the window size 48 int64_t span_fileoffset; // the window begin on the file 49 }; 50 51 #endif /* _DATASTREAM_H */ 52