| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| #pragma once |
| |
| #include <boost/archive/iterators/base64_from_binary.hpp> |
| #include <boost/archive/iterators/binary_from_base64.hpp> |
| #include <boost/archive/iterators/transform_width.hpp> |
| #include <string> |
| |
| namespace pulsar { |
| |
| namespace base64 { |
| |
| inline std::string encode(const char* data, size_t size) { |
| using namespace boost::archive::iterators; |
| using Base64Iter = base64_from_binary<transform_width<const char*, 6, 8>>; |
| |
| std::string encoded{Base64Iter(data), Base64Iter(data + size)}; |
| const auto numPaddings = (4 - encoded.size()) % 4; |
| encoded.append(numPaddings, '='); |
| return encoded; |
| } |
| |
| template <typename CharContainer> |
| inline std::string encode(const CharContainer& container) { |
| return encode(container.data(), container.size()); |
| } |
| |
| inline std::string decode(const std::string& encoded) { |
| using namespace boost::archive::iterators; |
| using Base64Iter = transform_width<binary_from_base64<std::string::const_iterator>, 8, 6>; |
| |
| std::string result{Base64Iter(encoded.cbegin()), Base64Iter(encoded.cend())}; |
| // There could be '\0's at the tail, it could cause "garbage after data" error when parsing JSON |
| while (!result.empty() && result.back() == '\0') { |
| result.pop_back(); |
| } |
| return result; |
| } |
| |
| } // namespace base64 |
| |
| } // namespace pulsar |