2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
//===-- TTYState.h ----------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Created by Greg Clayton on 3/26/07.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __TTYState_h__
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#define __TTYState_h__
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#include <stdint.h>
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#include <termios.h>
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class TTYState {
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public:
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TTYState();
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~TTYState();
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bool GetTTYState(int fd, bool saveProcessGroup);
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bool SetTTYState() const;
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bool IsValid() const {
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return FileDescriptorValid() && TFlagsValid() && TTYStateValid();
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}
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bool FileDescriptorValid() const { return m_fd >= 0; }
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bool TFlagsValid() const { return m_tflags != -1; }
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bool TTYStateValid() const { return m_ttystateErr == 0; }
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bool ProcessGroupValid() const { return m_processGroup != -1; }
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protected:
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int m_fd; // File descriptor
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int m_tflags;
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int m_ttystateErr;
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struct termios m_ttystate;
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pid_t m_processGroup;
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};
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class TTYStateSwitcher {
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public:
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TTYStateSwitcher();
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~TTYStateSwitcher();
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bool GetState(uint32_t idx, int fd, bool saveProcessGroup);
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bool SetState(uint32_t idx) const;
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uint32_t NumStates() const { return sizeof(m_ttystates) / sizeof(TTYState); }
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bool ValidStateIndex(uint32_t idx) const { return idx < NumStates(); }
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protected:
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mutable uint32_t m_currentState;
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TTYState m_ttystates[2];
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};
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#endif
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