/*
* Copyright (c) 2017 Fredrik Mellbin
*
* This file is part of VapourSynth.
*
* VapourSynth is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* VapourSynth is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with VapourSynth; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#ifndef VSUTF16_H
#define VSUTF16_H

#include <string>
#include <windows.h>

static inline std::string utf16_to_utf8(const std::wstring &wstr) {
    int required_size = WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), -1, nullptr, 0, nullptr, nullptr);
    std::string buffer;
    buffer.resize(required_size - 1);
    WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), static_cast<int>(wstr.size()), &buffer[0], required_size, nullptr, nullptr);
    return buffer;
}

static inline std::wstring utf16_from_utf8(const std::string &str) {
    int required_size = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, nullptr, 0);
    std::wstring wbuffer;
    wbuffer.resize(required_size - 1);
    MultiByteToWideChar(CP_UTF8, 0, str.c_str(), static_cast<int>(str.size()), &wbuffer[0], required_size);
    return wbuffer;
}

#endif