ImportExportUtilities.hpp

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// _LICENSE_HEADER_
//
// Copyright (C) 2019 - 2025.
// Terms register on the GPL-3.0 license.
//
// This file can be redistributed and/or modified under the license terms.
//
// See top level LICENSE file for more details.
//
// This file can be used citing references in CITATION.cff file.
 
#ifndef __ImportExportUtilities_H
#define __ImportExportUtilities_H
 
#include "Eigen/Eigen"
 
namespace Gedim_ImportExport_Utilities
{
 
template <class T, int Rows, int Cols>
std::ostream &operator<<(std::ostream &out, const Eigen::Matrix<T, Rows, Cols> &matrix)
{
    out << matrix.rows() << "," << matrix.cols() << ",";
    out << "{";
    for (unsigned int c = 0; c < matrix.cols(); c++)
    {
        out << (c != 0 ? ",{" : "{");
        for (unsigned int r = 0; r < matrix.rows(); r++)
            out << (r != 0 ? ", " : "") << matrix(r, c);
        out << "}";
    }
    out << "}";
 
    return out;
}
 
template <class T, std::size_t s> std::ostream &operator<<(std::ostream &out, const std::array<T, s> &elements)
{
    out << elements.size() << ",";
    out << "{";
    unsigned int i = 0;
    for (const auto &element : elements)
    {
        out << (i != 0 ? "," : "") << element;
        i++;
    }
    out << "}";
 
    return out;
}
 
template <class T> std::ostream &operator<<(std::ostream &out, const std::vector<T> &elements)
{
    out << elements.size() << ",";
    out << "{";
    unsigned int i = 0;
    for (const auto &element : elements)
    {
        out << (i != 0 ? "," : "") << element;
        i++;
    }
    out << "}";
 
    return out;
}
 
template <class T, int Rows, int Cols> std::istream &operator>>(std::istream &in, Eigen::Matrix<T, Rows, Cols> &matrix)
{
    char separator;
    unsigned int rows = 0, cols = 0;
    in >> rows;
    in >> separator;
    in >> cols;
    matrix.resize(rows, cols);
    in >> separator;
 
    in >> separator;
    for (unsigned int c = 0; c < matrix.cols(); c++)
    {
        in >> separator;
        for (unsigned int r = 0; r < matrix.rows(); r++)
        {
            in >> matrix(r, c);
            in >> separator;
        }
        in >> separator;
    }
 
    if (matrix.cols() == 0)
        in >> separator;
 
    return in;
}
 
template <class T, std::size_t s> std::istream &operator>>(std::istream &in, std::array<T, s> &elements)
{
    char separator;
    unsigned int size = 0;
    in >> size;
    in >> separator;
 
    in >> separator;
    for (unsigned int v = 0; v < size; v++)
    {
        T element;
        in >> element;
        in >> separator;
        elements[v] = element;
    }
 
    if (size == 0)
        in >> separator;
 
    return in;
}
 
template <class T> std::istream &operator>>(std::istream &in, std::vector<T> &elements)
{
    char separator;
    unsigned int size = 0;
    in >> size;
    elements.resize(size);
    in >> separator;
 
    in >> separator;
    for (unsigned int v = 0; v < size; v++)
    {
        T element;
        in >> element;
        in >> separator;
        elements[v] = element;
    }
 
    if (size == 0)
        in >> separator;
 
    return in;
}
} // namespace Gedim_ImportExport_Utilities
 
#endif // __IOUtilities_H