csv_reader.cc
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	#include "csv_reader.hh"
	#include "particles_factory_interface.hh"
	#include <fstream>
	#include <sstream>
	/* -------------------------------------------------------------------------- */
	CsvReader::CsvReader(const std::string& filename) : filename(filename) {}
	/* -------------------------------------------------------------------------- */
	void CsvReader::read(System& system) { this->compute(system); }
	/* -------------------------------------------------------------------------- */

	void CsvReader::compute(System& system) {

	std::ifstream is(filename.c_str());
	std::string line;

	if (is.is_open() == false) {
	std::cerr << "cannot open file " << filename << std::endl;
	throw;
	}

	while (is.good()) {
	getline(is, line);

	if (line[0] == '#' \|\| line.size() == 0)
	continue;

	auto p = ParticlesFactoryInterface::getInstance().createParticle();
	std::stringstream sstr(line);
	sstr >> *p;
	system.addParticle(std::move(p));
	}

	is.close();

	}

	/* -------------------------------------------------------------------------- */