Console.h

#pragma once

#include <iosfwd>

#include <Poco/SharedPtr.h>

#include "io/Printable.h"

namespace BeeeOn {

class ConsoleSessionImpl {
public:
        typedef Poco::SharedPtr<ConsoleSessionImpl> Ptr;

        virtual ~ConsoleSessionImpl();

        virtual std::string readUntil(const char c) = 0;

        virtual std::string readBytes(const unsigned int length) = 0;

        virtual void print(const std::string &text, bool newline = true) = 0;

        virtual bool eof();

protected:
        std::string iosReadUntil(std::istream &in, const char c);

        std::string iosReadBytes(std::istream &in, const unsigned int length);

        void iosPrint(std::ostream &out, const std::string &text, bool newline);
};

class Console;

class ConsoleSession : public Printable {
public:
        ConsoleSession(Console &console);

        std::string readLine();

        std::string readBytes(const unsigned int length);

        void print(const std::string &text, bool newline = true) override;

        bool eof();

private:
        ConsoleSessionImpl::Ptr m_impl;
        char m_eol;
        char m_skipEol;
        std::string m_prompt;
};

class Console {
        friend ConsoleSession;
public:
        typedef Poco::SharedPtr<Console> Ptr;

        Console();
        virtual ~Console();

        void setEol(const char c);
        char eol() const;

        void setSkipEol(const char c);
        char skipEol() const;

        void setPrompt(const std::string &prompt);
        std::string prompt() const;

        virtual void close();

protected:
        virtual ConsoleSessionImpl::Ptr openSession() = 0;

        class ClosedConsoleSessionImpl : public ConsoleSessionImpl {
        public:
                std::string readUntil(const char c) override;
                std::string readBytes(const unsigned int length) override;
                void print(const std::string &text, bool newline = true) override;
                bool eof() override;
        };

        ConsoleSessionImpl::Ptr closedSession();

private:
        char m_eol;
        char m_skipEol;
        std::string m_prompt;
};

}