1 //////////////////////////////////////////////////////////////////////// 2 // 3 // Copyright (C) 1993-2021 The Octave Project Developers 4 // 5 // See the file COPYRIGHT.md in the top-level directory of this 6 // distribution or <https://octave.org/copyright/>. 7 // 8 // This file is part of Octave. 9 // 10 // Octave is free software: you can redistribute it and/or modify it 11 // under the terms of the GNU General Public License as published by 12 // the Free Software Foundation, either version 3 of the License, or 13 // (at your option) any later version. 14 // 15 // Octave is distributed in the hope that it will be useful, but 16 // WITHOUT ANY WARRANTY; without even the implied warranty of 17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 // GNU General Public License for more details. 19 // 20 // You should have received a copy of the GNU General Public License 21 // along with Octave; see the file COPYING. If not, see 22 // <https://www.gnu.org/licenses/>. 23 // 24 //////////////////////////////////////////////////////////////////////// 25 26 #if ! defined (octave_octave_preserve_stream_state_h) 27 #define octave_octave_preserve_stream_state_h 1 28 29 #include "octave-config.h" 30 31 #include <ios> 32 33 namespace octave 34 { 35 class 36 preserve_stream_state 37 { 38 public: 39 preserve_stream_state(std::ios & s)40 preserve_stream_state (std::ios& s) 41 : m_stream (s), m_oflags (s.flags ()), m_oprecision (s.precision ()), 42 m_owidth (s.width ()), m_ofill (s.fill ()) 43 { } 44 ~preserve_stream_state(void)45 ~preserve_stream_state (void) 46 { 47 m_stream.flags (m_oflags); 48 m_stream.precision (m_oprecision); 49 m_stream.width (m_owidth); 50 m_stream.fill (m_ofill); 51 } 52 53 private: 54 55 std::ios& m_stream; 56 std::ios::fmtflags m_oflags; 57 std::streamsize m_oprecision; 58 int m_owidth; 59 char m_ofill; 60 }; 61 } 62 63 #endif 64