string_utils.h

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// WOLF - Copyright (C) 2020-2026
// Institut de Robòtica i Informàtica Industrial, CSIC-UPC.
// Authors: Joan Solà Ortega (jsola@iri.upc.edu) and
// Joan Vallvé Navarro (jvallve@iri.upc.edu)
// All rights reserved.
//
// This file is part of WOLF: http://www.iri.upc.edu/wolf
// WOLF is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 3
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#pragma once
 
#include <Eigen/Dense>
#include <ctime>
#include <iostream>
#include <string>
#include <sstream>
 
namespace wolf
{
// date now in string
std::string dateTimeNow();
 
inline std::string dateTimeNow()
{
    // Get date and time for archiving purposes
    std::time_t rawtime;
    std::time(&rawtime);
    const std::tm* timeinfo = std::localtime(&rawtime);
    char           time_char[30];
    std::strftime(time_char, sizeof(time_char), "%d/%m/%Y at %H:%M:%S", timeinfo);
    std::string date_time(time_char);
    return date_time;
}
}  // namespace wolf
 
namespace std
{
template <typename Derived>
std::string to_string(const Eigen::DenseBase<Derived>& mat)
{
    std::stringstream ss;
    if (mat.cols() == 1)
        ss << mat.transpose();
    else
        ss << std::endl << mat;
    return ss.str();
}
}  // namespace std