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base64.cpp
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base64.cpp
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/*
* This file is part of libkazv.
* SPDX-FileCopyrightText: 2020-2021 Tusooa Zhu <tusooa@kazv.moe>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <libkazv-config.hpp>
#include <cryptopp/base64.h>
#include "base64.hpp"
namespace Kazv
{
std::string encodeBase64(std::string original, int flags)
{
using CryptoPP::Name::Pad;
using CryptoPP::Name::InsertLineBreaks;
std::unique_ptr<CryptoPP::BufferedTransformation> tf;
if (flags & Base64Opts::urlSafe) {
auto encoder = std::make_unique<CryptoPP::Base64URLEncoder>();
if (! (flags & Base64Opts::padded)) {
auto params = CryptoPP::MakeParameters(Pad(), false)(InsertLineBreaks(), false);
encoder->IsolatedInitialize(params);
}
tf = std::move(encoder);
} else {
auto encoder = std::make_unique<CryptoPP::Base64Encoder>();
if (! (flags & Base64Opts::padded)) {
auto params = CryptoPP::MakeParameters(Pad(), false)(InsertLineBreaks(), false);
encoder->IsolatedInitialize(params);
}
tf = std::move(encoder);
}
std::string res;
tf->Attach(new CryptoPP::StringSink(res));
{
CryptoPP::StringSource ss(original, /* pumpAll = */ true, tf.release());
}
return res;
}
std::string decodeBase64(std::string encoded, int flags)
{
using CryptoPP::Name::Pad;
using CryptoPP::Name::InsertLineBreaks;
std::unique_ptr<CryptoPP::BufferedTransformation> tf;
if (flags & Base64Opts::urlSafe) {
tf = std::make_unique<CryptoPP::Base64URLDecoder>();
} else {
tf = std::make_unique<CryptoPP::Base64Decoder>();
}
std::string res;
tf->Attach(new CryptoPP::StringSink(res));
{
CryptoPP::StringSource ss(encoded, /* pumpAll = */ true, tf.release());
}
return res;
}
}

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