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/*
* Copyright (c) 2023 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef LOGGING_RTC_EVENT_LOG_ENCODER_OPTIONAL_BLOB_ENCODING_H_
#define LOGGING_RTC_EVENT_LOG_ENCODER_OPTIONAL_BLOB_ENCODING_H_
#include <stddef.h>
#include <string>
#include <vector>
#include "absl/strings/string_view.h"
#include "absl/types/optional.h"
namespace webrtc {
// Encode a sequence of optional strings, whose length is not known to be
// discernable from the blob itself (i.e. without being transmitted OOB),
// in a way that would allow us to separate them again on the decoding side.
// EncodeOptionalBlobs() may not fail but may return an empty string
std::string EncodeOptionalBlobs(
const std::vector<absl::optional<std::string>>& blobs);
// Calling DecodeOptionalBlobs() on an empty string, or with `num_of_blobs` set
// to 0, is an error. DecodeOptionalBlobs() returns an empty vector if it fails,
// which can happen if `encoded_blobs` is corrupted.
std::vector<absl::optional<std::string>> DecodeOptionalBlobs(
absl::string_view encoded_blobs,
size_t num_of_blobs);
} // namespace webrtc
#endif // LOGGING_RTC_EVENT_LOG_ENCODER_OPTIONAL_BLOB_ENCODING_H_
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