convert_string.h

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#pragma once
 
#include <string>
#include <sstream>
#include <iomanip>
 
#include "lib_begin.h"
 
namespace cgv {
        namespace utils {
 
template <typename T>
std::string to_string(const T& v, unsigned int w = -1, unsigned int p = -1)
{
        std::stringstream ss;
        if (w != (unsigned int)-1)
                ss << std::setw(w);
        if (p != (unsigned int)-1)
                ss << std::setprecision(p);
        ss << v;
        return ss.str();
}
 
template <typename T>
std::string to_string(const T& v, unsigned int w, char fill_char)
{
        std::stringstream ss;
        ss << std::setw(w) << std::setfill(fill_char) << v;
        return ss.str();
}
 
template <> CGV_API std::string to_string(const std::string& v, unsigned int w, unsigned int p);
 
template <typename T>
bool from_string(T& v, const std::string& s)
{
        std::stringstream ss(s);
        ss >> v;
        return !ss.fail();
}
 
template <> CGV_API bool from_string(std::string& v, const std::string& s);
 
        }
}
 
#include <cgv/config/lib_end.h>