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// util/base64.h
/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <sstream>
#include <string>
#include "mongo/base/string_data.h"
namespace mongo {
namespace base64 {
void encode(std::stringstream& ss, const char* data, int size);
std::string encode(const char* data, int size);
std::string encode(const std::string& s);
void decode(std::stringstream& ss, const std::string& s);
std::string decode(const std::string& s);
bool validate(StringData);
/**
* Calculate how large a given input would expand to.
* Effectively: ceil(inLen * 4 / 3)
*/
constexpr size_t encodedLength(size_t inLen) {
return static_cast<size_t>((inLen + 2.5) / 3) * 4;
}
} // namespace base64
} // namespace mongo
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