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https://github.com/mod-playerbots/azerothcore-wotlk.git
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58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*
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* This file is part of the AzerothCore 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 Affero General Public License as published by the
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* Free Software Foundation; either version 3 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 Affero 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 "Base64.h"
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#include "BaseEncoding.h"
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#include "Errors.h"
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struct B64Impl
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{
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static constexpr std::size_t BITS_PER_CHAR = 6;
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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 < 0x40);
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if (v < 26) { return 'A' + v; }
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if (v < 52) { return 'a' + (v - 26); }
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if (v < 62) { return '0' + (v - 52); }
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if (v == 62) { return '+'; }
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else { return '/'; }
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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 (('A' <= v) && (v <= 'Z')) { return (v - 'A'); }
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if (('a' <= v) && (v <= 'z')) { return (v - 'a') + 26; }
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if (('0' <= v) && (v <= '9')) { return (v - '0') + 52; }
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if (v == '+') { return 62; }
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if (v == '/') { return 63; }
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return DECODE_ERROR;
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}
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};
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/*static*/ std::string Acore::Encoding::Base64::Encode(std::vector<uint8> const& data)
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{
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return Acore::Impl::GenericBaseEncoding<B64Impl>::Encode(data);
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}
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/*static*/ Optional<std::vector<uint8>> Acore::Encoding::Base64::Decode(std::string const& data)
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{
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return Acore::Impl::GenericBaseEncoding<B64Impl>::Decode(data);
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}
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