AOO410/main/setup_native/source/win32/customactions/reg4msdoc/stringconverter.cxx

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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * software distributed under the License is distributed on an
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#include "stringconverter.hxx"

#ifdef _MSC_VER
#pragma warning(push, 1) /* disable warnings within system headers */
#endif
#include <windows.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif

#include <malloc.h>

/** Convert a Unicode string to an ANSI string based on CP_ACP
*/
std::string UnicodeToAnsiString(const std::wstring& UniString)
{
    int len = WideCharToMultiByte(
		CP_ACP, 0, UniString.c_str(), -1, 0, 0, 0, 0);
			
	char* buff = reinterpret_cast<char*>(_alloca(len));

	WideCharToMultiByte(
		CP_ACP, 0, UniString.c_str(), -1, buff, len, 0, 0);

	return std::string(buff);
}

/** Convert an ANSI string to unicode based on CP_ACP
*/
std::wstring AnsiToUnicodeString(const std::string& AnsiString)
{
    int len = MultiByteToWideChar(
		CP_ACP, 0, AnsiString.c_str(), -1, 0, 0);
			
	wchar_t* buff = reinterpret_cast<wchar_t*>(_alloca(len * sizeof(wchar_t)));

	MultiByteToWideChar(
		CP_ACP, 0, AnsiString.c_str(), -1, buff, len);

	return std::wstring(buff);
}