to_hex template

to_hex.cc

// Header:
// template <class T> std::string to_hex(T t, std::string prefix = "", bool pad = true, int8 custom_len = -1);


#include <sstream>
#include <string>
#include <limits>

template <class T> std::string to_hex(T t, std::string prefix, bool pad, int8 custom_len)
{
	std::ostringstream oss;
	if(pad) {
		oss.fill('0');
	
		if(custom_len < 0) {
			oss.width(std::numeric_limits<T>::digits/4);
		} else {
			oss.width(custom_len);
		}
	}
	oss << std::hex << t;
	prefix += oss.str();
	return prefix;
}

template std::string to_hex<time_t>(time_t t, std::string prefix, bool pad, int8 custom_len);
template std::string to_hex<uint32>(uint32 t, std::string prefix, bool pad, int8 custom_len);
template std::string to_hex<uint16>(uint16 t, std::string prefix, bool pad, int8 custom_len);
template std::string to_hex<uint8>(uint8   t, std::string prefix, bool pad, int8 custom_len);