codec_detail.hpp

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#pragma once

 
#include <cstddef>
#include <cstdint>
#include <span>
#include <string>
#include <string_view>
#include <unordered_map>
#include <vector>
 
#include <wowlib/core/buffer.hpp>
#include <wowlib/db/codec.hpp>
#include <wowlib/db/schema.hpp>
#include <wowlib/formats/common/string_block.hpp>
 
namespace wowlib::db::detail {
  std::int64_t readInt(std::span<const std::byte> image, std::size_t& pos, std::size_t bytes, bool isSigned);

  void writeInt(FileBuffer& out, std::int64_t value, std::size_t bytes);

  struct StringPool {
    formats::StringBlock block;
    std::unordered_map<std::string, std::uint32_t> lookup;

    explicit StringPool(const formats::StringBlock& source);

    std::uint32_t resolve(std::string_view value, const std::vector<std::uint32_t>& journal, std::size_t& cursor);
  };

  void decodeInlineRecord(std::span<const Column> schema,
                            std::size_t record,
                            std::span<const std::byte> image,
                            RecordSink& sink,
                            TableState& state);

  void encodeInlineRecord(std::span<const Column> schema,
                            const RecordSource& source,
                            std::size_t record,
                            FileBuffer& out,
                            StringPool& pool,
                            const TableState& state,
                            std::size_t& cursor);
}