40 lines
1005 B
C++
40 lines
1005 B
C++
#pragma once
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#ifndef MESSMER_CPPUTILS_IO_DONTECHOSTDINTOSTDOUTRAII_H
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#define MESSMER_CPPUTILS_IO_DONTECHOSTDINTOSTDOUTRAII_H
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#include <iostream>
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#include <string>
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#include <termios.h>
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#include <unistd.h>
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#include "../macros.h"
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namespace cpputils {
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/**
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* If you create an instance of this class in your scope, then any user input from stdin
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* won't be echoed back to stdout until the instance leaves the scope.
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* This can be very handy for password inputs where you don't want the password to be visible on screen.
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*/
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class DontEchoStdinToStdoutRAII final {
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public:
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DontEchoStdinToStdoutRAII(): _old_state() {
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tcgetattr(STDIN_FILENO, &_old_state);
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termios new_state = _old_state;
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new_state.c_lflag &= ~ECHO;
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tcsetattr(STDIN_FILENO, TCSANOW, &new_state);
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}
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~DontEchoStdinToStdoutRAII() {
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tcsetattr(STDIN_FILENO, TCSANOW, &_old_state);
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}
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private:
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termios _old_state;
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DISALLOW_COPY_AND_ASSIGN(DontEchoStdinToStdoutRAII);
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};
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}
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#endif
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