StringHelpers.h

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// This file is part of the MercuryDPM project (https://www.mercurydpm.org).
// Copyright (c), The MercuryDPM Developers Team. All rights reserved.
// License: BSD 3-Clause License; see the LICENSE file in the root directory.
 
#ifndef MERCURYDPM_STRING_HELPERS_H
#define MERCURYDPM_STRING_HELPERS_H
 
#include "Math/ExtendedMath.h"
 
#include <string>
#include <memory>
 
namespace helpers
{
    std::string lower(std::string s);
 
    void getLineFromStringStream(std::istream& in, std::stringstream& out);
 
    bool isNext(std::istream& is, const std::string& name);
 
    MERCURYDPM_DEPRECATED
    bool compare(std::istream& is, const std::string& s);
 
    bool lookAhead(std::istream& is, const std::string& name, int number);
 
    std::string toString(Mdouble value, unsigned precision);
 
    template<typename T>
    std::string toString(const T& n)
    {
        std::ostringstream stm;
        stm << n;
        return stm.str();
    }
 
    template<typename T>
    std::string toString(const std::vector<T>& vec)
    {
        std::ostringstream stm;
        for (const auto val : vec) {
            stm << val << ' ';
        }
        return stm.str();
    }
 
    template <typename... Args>
    std::string stringFormat(const std::string& format, Args... args)
    {
        int size_s = std::snprintf(nullptr, 0, format.c_str(), args...) + 1; // Extra space for '\0'
        if (size_s <= 0) {
            logger(ERROR, "snprintf() failed");
        }
        auto size = static_cast<size_t>(size_s);
        std::unique_ptr<char[]> buf(new char[size]);
        std::snprintf(buf.get(), size, format.c_str(), args...);
        return std::string(buf.get(), buf.get() + size - 1); // We don't want the '\0' inside
    }
}
 
#endif // MERCURYDPM_STRING_HELPERS_H