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// Copyright 2009, Google Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// 3. Neither the name of Google Inc. nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// This file contains the Prompt class.
#ifndef EXAMPLES_HELLONET_PROMPT_H__
#define EXAMPLES_HELLONET_PROMPT_H__
#include <termios.h>
#include <iostream>
#include <string>
// This class provides some static methods useful for prompting on a terminal.
class Prompt {
public:
static std::string PromptAndInputWithNoEcho(const std::string& prompt) {
std::cin.get();
std::cout << prompt;
std::cout << std::flush;
// Get the current state of the input terminal.
struct termios t;
tcgetattr(0, &t);
// Flip off the ECHO bit.
t.c_lflag &= ~ECHO;
tcsetattr(0, TCSANOW, &t);
// User can now type password safely.
std::string input;
std::getline(std::cin, input);
// Flip ECHO back on.
t.c_lflag |= ECHO;
tcsetattr(0, TCSANOW, &t);
std::cout << std::endl;
return input;
}
static bool PromptAgain(const std::string& prompt) {
std::cout << prompt;
std::string again;
std::getline(std::cin, again);
return !again.empty() && again[0] == 'y';
}
};
#endif // EXAMPLES_HELLONET_PROMPT_H__
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