utils.cpp

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#include "utils.hpp"
 
namespace utils {
 
std::string scientific_format(double d, int width, int prec)
{
    std::stringstream ss;
    ss << std::setw(width) << std::setprecision(prec) << std::scientific << d;
    return ss.str();
}
 
std::string scientific_format(const std::vector<double> &v, int width, int prec)
{
    std::stringstream ss;
    for (double elem : v) {
        ss << scientific_format(elem, width, prec);
    }
    return ss.str();
}
 
bool mkpath(std::string path, int mode)
{
    std::string cur_dir;
    std::string::size_type pos = -1;
    struct stat buf;
 
    if (path.back() != '/') {
        path += '/';
    }
    while (true) {
        pos++;
        pos = path.find('/', pos);
        if (pos != std::string::npos) {
            cur_dir = path.substr(0, pos);
            if (mkdir(cur_dir.c_str(), mode) != 0
                && stat(cur_dir.c_str(), &buf) != 0) {
                return -1;
            }
        }
        else {
            break;
        }
    }
    return 0;
}
 
std::string dirname(const std::string &path)
{
    return path.substr(0, path.find_last_of("/"));
}
 
} // namespace utils