C++ 11 implementation of flatdata
First, install the requirements of the generator and build flatdata-cpp.
pip3 install -r flatdata-generator/requirements.txt
cd flatdata-cpp
mkdir build && cd build
cmake ..
make
make test # optionalOnce you have created a flatdata schema file, you can generate a C++ header:
./generator --gen cpp --schema locations.flatdata --output-file locations.hppSerialize some data:
// Compile with: c++ -std=c++11 writer.cpp -Iflatdata-cpp/include -Lbuild/flatdata-cpp -lflatdata -lboost_system -lboost_filesystem -o writer
#include "locations.hpp"
int main() {
auto storage = flatdata::FileResourceStorage::create("locations.archive"); // create storage
auto builder = loc::LocationsBuilder::open(std::move(storage)); // create builder
auto pois = builder.start_pois();
uint32_t x, y;
while(std::cin >> x >> y) {
loc::PointMutator poi = pois.grow();
poi.x = x;
poi.y = y;
}
pois.close(); // flush not yet written data to disk
}And finally, read the serialized data:
// Compile with: c++ -std=c++11 reader.cpp -Iflatdata-cpp/include -Lbuild/flatdata-cpp -lflatdata -lboost_system -lboost_filesystem -o reader
#include "locations.hpp"
#include <iostream>
int main() {
auto storage = flatdata::FileResourceStorage::create("locations.archive"); // open storage
auto archive = loc::Locations::open(std::move(storage)); // create archive
for (loc::Point point : archive.pois()) { // iterate through pois
std::cout << point.to_string() << std::endl;
}
return 0;
}For more examples cf. the examples directory.