construct/include/ircd/localee.h

/*
 * Copyright (C) 2016 Charybdis Development Team
 * Copyright (C) 2016 Jason Volk <jason@zemos.net>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice is present in all copies.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once
#define HAVE_IRCD_LOCALE_H

//
// Utilities for internationalization.
//

// On newer platforms (gcc-5 etc) these conversions are standard C++.
// On older platforms the definition file may use boost::locale.
namespace ircd::locale::char16
{
	char conv(const char16_t &);
	char16_t conv(const char &);

	size_t conv(const char16_t *const &, const size_t &len, char *const &buf, const size_t &max);
	size_t conv(const char *const &, const size_t &len, char16_t *const &buf, const size_t &max);  // uint8_t = max*2

	size_t conv(const char16_t *const &, char *const &buf, const size_t &max);
	size_t conv(const char *const &, char16_t *const &buf, const size_t &max);  // uint8_t = max*2

	std::string conv(const char16_t *const &, const size_t &len);
	std::string conv(const char16_t *const &);
	std::string conv(const std::u16string &);

	std::u16string conv(const char *const &, const size_t &len);
	std::u16string conv(const char *const &);
	std::u16string conv(const std::string &);

	std::ostream &operator<<(std::ostream &, const std::u16string &);
}

namespace ircd::locale
{
	using char16::operator<<;
}

namespace ircd
{
	using locale::operator<<;
}

inline std::ostream &
ircd::locale::char16::operator<<(std::ostream &s,
                                 const std::u16string &u)
{
	s << conv(u);
	return s;
}