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#pragma once
#include "kml/header_binary.hpp"
#include "kml/types.hpp"
#include "kml/visitors.hpp"
#include "coding/read_write_utils.hpp"
#include "coding/sha1.hpp"
#include "coding/text_storage.hpp"
#include "platform/platform.hpp"
#include <string>
#include <vector>
namespace kml
{
namespace binary
{
enum class Version : uint8_t
{
V0 = 0,
Latest = V0
};
class SerializerKml
{
public:
explicit SerializerKml(CategoryData & data);
~SerializerKml();
void ClearCollectionIndex();
template <typename Sink>
void Serialize(Sink & sink)
{
// Write format version.
WriteToSink(sink, Version::Latest);
auto const startPos = sink.Pos();
// Reserve place for the header.
Header header;
WriteZeroesToSink(sink, header.Size());
// Serialize category.
header.m_categoryOffset = sink.Pos() - startPos;
SerializeCategory(sink);
// Serialize bookmarks.
header.m_bookmarksOffset = sink.Pos() - startPos;
SerializeBookmarks(sink);
// Serialize tracks.
header.m_tracksOffset = sink.Pos() - startPos;
SerializeTracks(sink);
// Serialize strings.
header.m_stringsOffset = sink.Pos() - startPos;
SerializeStrings(sink);
// Fill header.
header.m_eosOffset = sink.Pos() - startPos;
sink.Seek(startPos);
header.Serialize(sink);
sink.Seek(startPos + header.m_eosOffset);
}
template <typename Sink>
void SerializeCategory(Sink & sink)
{
CategorySerializerVisitor<Sink> visitor(sink);
visitor(m_data);
}
template <typename Sink>
void SerializeBookmarks(Sink & sink)
{
BookmarkSerializerVisitor<Sink> visitor(sink);
visitor(m_data.m_bookmarksData);
}
template <typename Sink>
void SerializeTracks(Sink & sink)
{
BookmarkSerializerVisitor<Sink> visitor(sink);
visitor(m_data.m_tracksData);
}
// Serializes texts in a compressed storage with block access.
template <typename Sink>
void SerializeStrings(Sink & sink)
{
coding::BlockedTextStorageWriter<Sink> writer(sink, 200000 /* blockSize */);
for (auto const & str : m_strings)
writer.Append(str);
}
private:
CategoryData & m_data;
std::vector<std::string> m_strings;
};
class DeserializerKml
{
public:
DECLARE_EXCEPTION(DeserializeException, RootException);
explicit DeserializerKml(CategoryData & data);
template <typename ReaderType>
void Deserialize(ReaderType const & reader)
{
// Check version.
NonOwningReaderSource source(reader);
auto const v = ReadPrimitiveFromSource<Version>(source);
if (v != Version::Latest)
MYTHROW(DeserializeException, ("Incorrect file version."));
auto subReader = reader.CreateSubReader(source.Pos(), source.Size());
InitializeIfNeeded(*subReader);
// Deserialize category.
{
auto categorySubReader = CreateCategorySubReader(*subReader);
NonOwningReaderSource src(*categorySubReader);
CategoryDeserializerVisitor<decltype(src)> visitor(src);
visitor(m_data);
}
// Deserialize bookmarks.
{
auto bookmarkSubReader = CreateBookmarkSubReader(*subReader);
NonOwningReaderSource src(*bookmarkSubReader);
BookmarkDeserializerVisitor<decltype(src)> visitor(src);
visitor(m_data.m_bookmarksData);
}
// Deserialize tracks.
{
auto trackSubReader = CreateTrackSubReader(*subReader);
NonOwningReaderSource src(*trackSubReader);
BookmarkDeserializerVisitor<decltype(src)> visitor(src);
visitor(m_data.m_tracksData);
}
// Deserialize strings.
{
auto textsSubReader = CreateStringsSubReader(*subReader);
coding::BlockedTextStorage<Reader> strings(*textsSubReader);
DeserializedStringCollector<Reader> collector(strings);
CollectorVisitor<decltype(collector)> visitor(collector);
visitor(m_data);
CollectorVisitor<decltype(collector)> clearVisitor(collector,
true /* clear index */);
clearVisitor(m_data);
}
}
private:
template <typename ReaderType>
void InitializeIfNeeded(ReaderType const & reader)
{
if (m_initialized)
return;
NonOwningReaderSource source(reader);
m_header.Deserialize(source);
m_initialized = true;
}
template <typename ReaderType>
std::unique_ptr<Reader> CreateSubReader(ReaderType const & reader,
uint64_t startPos, uint64_t endPos)
{
ASSERT(m_initialized, ());
ASSERT_GREATER_OR_EQUAL(endPos, startPos, ());
auto const size = endPos - startPos;
return reader.CreateSubReader(startPos, size);
}
template <typename ReaderType>
std::unique_ptr<Reader> CreateCategorySubReader(ReaderType const & reader)
{
return CreateSubReader(reader, m_header.m_categoryOffset, m_header.m_bookmarksOffset);
}
template <typename ReaderType>
std::unique_ptr<Reader> CreateBookmarkSubReader(ReaderType const & reader)
{
return CreateSubReader(reader, m_header.m_bookmarksOffset, m_header.m_tracksOffset);
}
template <typename ReaderType>
std::unique_ptr<Reader> CreateTrackSubReader(ReaderType const & reader)
{
return CreateSubReader(reader, m_header.m_tracksOffset, m_header.m_stringsOffset);
}
template <typename ReaderType>
std::unique_ptr<Reader> CreateStringsSubReader(ReaderType const & reader)
{
return CreateSubReader(reader, m_header.m_stringsOffset, m_header.m_eosOffset);
}
CategoryData & m_data;
Header m_header;
bool m_initialized = false;
};
} // namespace binary
} // namespace kml
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