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