folly/folly/detail/base64_detail/Base64Common.h

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed 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 <cstddef>
#include <cstdint>

namespace folly::detail::base64_detail {

constexpr std::size_t base64EncodedSize(std::size_t inSize) { … }

constexpr std::size_t base64URLEncodedSize(std::size_t inSize) { … }

// More incorrect usage of '=' padding will be detected during decoding
constexpr std::size_t base64PaddingToSubtract(const char* l) { … }

// Does not detect errors, all of them will be detected during actual decoding.
constexpr std::size_t base64DecodedSize(const char* f, const char* l) { … }

constexpr std::size_t base64URLDecodedSize(const char* f, const char* l) { … }

struct Base64DecodeResult { … };

} // namespace folly::detail::base64_detail