#include <std_include.hpp>
#include "string.hpp"

namespace utils::string
{
	const char* va(const char* fmt, ...)
	{
		static thread_local va_provider<8, 256> provider;

		va_list ap;
		va_start(ap, fmt);

		const char* result = provider.get(fmt, ap);

		va_end(ap);
		return result;
	}

	std::string to_lower(std::string text)
	{
		std::transform(text.begin(), text.end(), text.begin(), [](const char input)
		{
			return CHAR(tolower(input));
		});

		return text;
	}

	std::string to_upper(std::string text)
	{
		std::transform(text.begin(), text.end(), text.begin(), [](const char input)
		{
			return CHAR(toupper(input));
		});

		return text;
	}

	std::string dump_hex(const std::string& data, const std::string& separator)
	{
		std::string result;

		for (unsigned int i = 0; i < data.size(); ++i)
		{
			if (i > 0)
			{
				result.append(separator);
			}

			result.append(va("%02X", data[i] & 0xFF));
		}

		return result;
	}
}