StructuredHeadersEncoder.h

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/*
 *  Copyright (c) 2018-present, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 *
 */

#pragma once

#include "StructuredHeadersConstants.h"
#include <ostream>
#include <string>
#include <unordered_map>
#include <vector>
#include <boost/iostreams/device/back_inserter.hpp>
#include <boost/iostreams/stream_buffer.hpp>

namespace proxygen {

using namespace StructuredHeaders;

using string_buf = boost::iostreams::stream_buffer<
  boost::iostreams::back_insert_device<std::string> >;

class StructuredHeadersEncoder {

 public:

   StructuredHeadersEncoder();

   EncodeError encodeParameterisedList(const ParameterisedList& input);

   EncodeError encodeDictionary(const Dictionary& input);

   EncodeError encodeList(const std::vector<StructuredHeaderItem>& input);

   EncodeError encodeItem(const StructuredHeaderItem& input);

   EncodeError encodeIdentifier(const std::string& input);

   std::string get();

 private:

   EncodeError encodeBinaryContent(const std::string& input);

   EncodeError encodeString(const std::string& input);

   EncodeError encodeInteger(int64_t input);

   EncodeError encodeFloat(double input);

   EncodeError handleEncodeError(EncodeError err,
     const std::string& badContent);

   EncodeError handleEncodeError(EncodeError err);

   std::string output_;
   string_buf buf_;
   std::ostream outputStream_;

};

}