/*  -*- c++ -*-

    SPDX-FileCopyrightText: 2002 Marc Mutz <mutz@kde.org>

    SPDX-License-Identifier: LGPL-2.0-or-later

*/

#ifndef KCODECS_UUENCODE_H

#define KCODECS_UUENCODE_H

#include "kcodecs.h"

namespace KCodecs

{

/*

  A class representing the UUEncode codec.

*/

class UUCodec : public Codec

{

public:

    constexpr UUCodec() = default;

    constexpr ~UUCodec() override = default;

    constexpr const char *name() const override

    {

        return "x-uuencode";

    }

    qsizetype maxEncodedSizeFor(qsizetype insize, NewlineType newline = Codec::NewlineLF) const override

    {

        Q_UNUSED(newline);

        return insize; // we have no encoder!

    }

    qsizetype maxDecodedSizeFor(qsizetype insize, NewlineType newline = Codec::NewlineLF) const override

    {

        // assuming all characters are part of the uuencode stream (which

        // does almost never hold due to required linebreaking; but

        // additional non-uu chars don't affect the output size), each

        // 4-tupel of them becomes a 3-tupel in the decoded octet

        // stream. So:

        qsizetype result = ((insize + 3) / 4) * 3;

        // but all of them may be \n, so

        if (newline == Codec::NewlineCRLF) {

            result *= 2; // :-o

        }

        return result;

    }

    Encoder *makeEncoder(NewlineType newline = Codec::NewlineLF) const override;

    Decoder *makeDecoder(NewlineType newline = Codec::NewlineLF) const override;

};

} // namespace KCodecs

#endif // KCODECS_UUENCODE_H