mirror of
https://github.com/FairRootGroup/FairMQ.git
synced 2025-10-13 08:41:16 +00:00
50 lines
1.8 KiB
C++
50 lines
1.8 KiB
C++
/********************************************************************************
|
|
* Copyright (C) 2021 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
|
|
* *
|
|
* This software is distributed under the terms of the *
|
|
* GNU Lesser General Public Licence (LGPL) version 3, *
|
|
* copied verbatim in the file "LICENSE" *
|
|
********************************************************************************/
|
|
|
|
#ifndef FAIR_MQ_TOOLS_IO_H
|
|
#define FAIR_MQ_TOOLS_IO_H
|
|
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
namespace fair::mq::tools
|
|
{
|
|
|
|
/// Enables noncanonical mode for the input terminal for the lifetime of this object.
|
|
/// (input becomes available to the application without user having to type a line-delimiter)
|
|
/// Read `man termios` for more details
|
|
struct NonCanonicalInput
|
|
{
|
|
NonCanonicalInput()
|
|
{
|
|
termios t;
|
|
tcgetattr(STDIN_FILENO, &t); // get the current terminal I/O structure
|
|
t.c_lflag &= ~ICANON; // disable canonical input
|
|
t.c_lflag &= ~ECHO; // do not echo input chars
|
|
tcsetattr(STDIN_FILENO, TCSANOW, &t); // apply the new settings
|
|
}
|
|
|
|
NonCanonicalInput(const NonCanonicalInput&) = delete;
|
|
NonCanonicalInput(NonCanonicalInput&&) = delete;
|
|
NonCanonicalInput& operator=(const NonCanonicalInput&) = delete;
|
|
NonCanonicalInput& operator=(NonCanonicalInput&&) = delete;
|
|
|
|
~NonCanonicalInput()
|
|
{
|
|
termios t;
|
|
tcgetattr(STDIN_FILENO, &t); // get the current terminal I/O structure
|
|
t.c_lflag |= ICANON; // re-enable canonical input
|
|
t.c_lflag |= ECHO; // echo input chars
|
|
tcsetattr(STDIN_FILENO, TCSANOW, &t); // apply the new settings
|
|
}
|
|
};
|
|
|
|
} // namespace fair::mq::tools
|
|
|
|
#endif /* FAIR_MQ_TOOLS_IO_H */
|