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/*
* Copyright (C) 2008-2019 TrinityCore <https://www.trinitycore.org/>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Base32.h"
#include "BaseEncoding.h"
#include "Errors.h"
struct B32Impl
{
static constexpr std::size_t BITS_PER_CHAR = 5;
static constexpr char PADDING = '=';
static constexpr char Encode(uint8 v)
{
ASSERT(v < 0x20);
if (v < 26) return 'A'+v;
else return '2' + (v-26);
}
static constexpr uint8 DECODE_ERROR = 0xff;
static constexpr uint8 Decode(uint8 v)
{
if (v == '0') return Decode('O');
if (v == '1') return Decode('l');
if (v == '8') return Decode('B');
if (('A' <= v) && (v <= 'Z')) return (v-'A');
if (('a' <= v) && (v <= 'z')) return (v-'a');
if (('2' <= v) && (v <= '7')) return (v-'2')+26;
return DECODE_ERROR;
}
};
/*static*/ std::string Trinity::Encoding::Base32::Encode(std::vector<uint8> const& data)
{
return Trinity::Impl::GenericBaseEncoding<B32Impl>::Encode(data);
}
/*static*/ Optional<std::vector<uint8>> Trinity::Encoding::Base32::Decode(std::string const& data)
{
return Trinity::Impl::GenericBaseEncoding<B32Impl>::Decode(data);
}
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