libcryfs/io/Console.h

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2015-09-12 20:07:44 +02:00
#pragma once
#ifndef MESSMER_CPPUTILS_IO_CONSOLE_H
#define MESSMER_CPPUTILS_IO_CONSOLE_H
#include <string>
#include <vector>
#include <iostream>
#include <boost/optional.hpp>
namespace cpputils {
class Console {
public:
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virtual ~Console() {}
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virtual unsigned int ask(const std::string &question, const std::vector<std::string> &options) = 0;
virtual bool askYesNo(const std::string &question) = 0;
virtual void print(const std::string &output) = 0;
};
class IOStreamConsole: public Console {
public:
IOStreamConsole();
IOStreamConsole(std::ostream &output, std::istream &input);
unsigned int ask(const std::string &question, const std::vector<std::string> &options) override;
bool askYesNo(const std::string &question) override;
void print(const std::string &output) override;
private:
template<typename Return>
Return _askForChoice(const std::string &question, std::function<boost::optional<Return> (const std::string&)> parse);
std::ostream &_output;
std::istream &_input;
};
}
#endif