/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Copyright 2018 Danny Robson <danny@nerdcruft.net>
 */

#pragma once

#include "../view.hpp"

///////////////////////////////////////////////////////////////////////////////
namespace cruft::encode {
    template <typename ValueT>
    ValueT
    decode36 (cruft::view<char const*> &src)
    {
        ValueT accum = 0;
        for (auto const i: src) {
            accum *= 36;

            switch (i) {
            case '0'...'9': accum += i - '0';      continue;
            case 'a'...'z': accum += i - 'a' + 10; continue;
            case 'A'...'Z': accum += i - 'A' + 10; continue;
            default:
                throw std::invalid_argument ("invalid character");
            }
        }

        return accum;
    }
}