love2d.love/src/common/utf8.cpp

/**
 * Copyright (c) 2006-2017 LOVE Development Team
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 **/

#include "utf8.h"

#ifdef LOVE_WINDOWS

namespace love
{

std::string to_utf8(LPCWSTR wstr)
{
	size_t wide_len = wcslen(wstr)+1;

	// Get size in UTF-8.
	int utf8_size = WideCharToMultiByte(CP_UTF8, 0, wstr, wide_len, 0, 0, 0, 0);

	char *utf8_str = new char[utf8_size];

	// Convert to UTF-8.
	int ok = WideCharToMultiByte(CP_UTF8, 0, wstr, wide_len, utf8_str, utf8_size, 0, 0);

	std::string ret;
	if (ok)
		ret = utf8_str;

	delete[] utf8_str;
	return ret;
}

std::wstring to_widestr(const std::string &str)
{
	if (str.empty())
		return std::wstring();

	int wide_size = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), (int) str.length(), nullptr, 0);

	if (wide_size == 0)
		return std::wstring();

	std::wstring widestr;
	widestr.resize(wide_size);

	int ok = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), (int) str.length(), &widestr[0], widestr.length());

	if (!ok)
		return std::wstring();

	return widestr;
}

void replace_char(std::string &str, char find, char replace)
{
	int length = str.length();

	for (int i = 0; i<length; i++)
	{
		if (str[i] == find)
			str[i] = replace;
	}
}

} // love

#endif // LOVE_WINDOWS