59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
//===-- TTYState.h ----------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Created by Greg Clayton on 3/26/07.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef __TTYState_h__
|
|
#define __TTYState_h__
|
|
|
|
#include <stdint.h>
|
|
#include <termios.h>
|
|
|
|
class TTYState {
|
|
public:
|
|
TTYState();
|
|
~TTYState();
|
|
|
|
bool GetTTYState(int fd, bool saveProcessGroup);
|
|
bool SetTTYState() const;
|
|
|
|
bool IsValid() const {
|
|
return FileDescriptorValid() && TFlagsValid() && TTYStateValid();
|
|
}
|
|
bool FileDescriptorValid() const { return m_fd >= 0; }
|
|
bool TFlagsValid() const { return m_tflags != -1; }
|
|
bool TTYStateValid() const { return m_ttystateErr == 0; }
|
|
bool ProcessGroupValid() const { return m_processGroup != -1; }
|
|
|
|
protected:
|
|
int m_fd; // File descriptor
|
|
int m_tflags;
|
|
int m_ttystateErr;
|
|
struct termios m_ttystate;
|
|
pid_t m_processGroup;
|
|
};
|
|
|
|
class TTYStateSwitcher {
|
|
public:
|
|
TTYStateSwitcher();
|
|
~TTYStateSwitcher();
|
|
|
|
bool GetState(uint32_t idx, int fd, bool saveProcessGroup);
|
|
bool SetState(uint32_t idx) const;
|
|
uint32_t NumStates() const { return sizeof(m_ttystates) / sizeof(TTYState); }
|
|
bool ValidStateIndex(uint32_t idx) const { return idx < NumStates(); }
|
|
|
|
protected:
|
|
mutable uint32_t m_currentState;
|
|
TTYState m_ttystates[2];
|
|
};
|
|
|
|
#endif |