Chris Lattner | 30fdc8d | 2010-06-08 16:52:24 +0000 | [diff] [blame] | 1 | //===-- TTYState.h ----------------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // Created by Greg Clayton on 3/26/07. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef __TTYState_h__ |
| 15 | #define __TTYState_h__ |
| 16 | |
| 17 | #include <termios.h> |
| 18 | #include <stdint.h> |
| 19 | |
| 20 | class TTYState |
| 21 | { |
| 22 | public: |
| 23 | TTYState(); |
| 24 | ~TTYState(); |
| 25 | |
| 26 | bool GetTTYState (int fd, bool saveProcessGroup); |
| 27 | bool SetTTYState () const; |
| 28 | |
| 29 | bool IsValid() const { return FileDescriptorValid() && TFlagsValid() && TTYStateValid(); } |
| 30 | bool FileDescriptorValid() const { return m_fd >= 0; } |
| 31 | bool TFlagsValid() const { return m_tflags != -1; } |
| 32 | bool TTYStateValid() const { return m_ttystateErr == 0; } |
| 33 | bool ProcessGroupValid() const { return m_processGroup != -1; } |
| 34 | |
| 35 | protected: |
| 36 | int m_fd; // File descriptor |
| 37 | int m_tflags; |
| 38 | int m_ttystateErr; |
| 39 | struct termios m_ttystate; |
| 40 | pid_t m_processGroup; |
| 41 | |
| 42 | }; |
| 43 | |
| 44 | |
| 45 | class TTYStateSwitcher |
| 46 | { |
| 47 | public: |
| 48 | TTYStateSwitcher(); |
| 49 | ~TTYStateSwitcher(); |
| 50 | |
| 51 | bool GetState(uint32_t idx, int fd, bool saveProcessGroup); |
| 52 | bool SetState(uint32_t idx) const; |
| 53 | uint32_t NumStates() const { return sizeof(m_ttystates)/sizeof(TTYState); } |
| 54 | bool ValidStateIndex(uint32_t idx) const { return idx < NumStates(); } |
| 55 | |
| 56 | protected: |
| 57 | mutable uint32_t m_currentState; |
| 58 | TTYState m_ttystates[2]; |
| 59 | }; |
| 60 | |
| 61 | #endif |