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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
#ifndef OPENVPN_WIN_UNICODE_H
#define OPENVPN_WIN_UNICODE_H
#include <windows.h>
#include <string>
#include <memory>
#include <openvpn/common/size.hpp>
#include <openvpn/common/exception.hpp>
namespace openvpn::Win {
typedef std::unique_ptr<wchar_t[]> UTF16;
typedef std::unique_ptr<char[]> UTF8;
OPENVPN_SIMPLE_EXCEPTION(win_utf16);
inline wchar_t *utf16(const std::string &str, int cp = CP_UTF8)
{
// first get output length (return value includes space for trailing nul)
const int len = ::MultiByteToWideChar(cp,
0,
str.c_str(),
-1,
nullptr,
0);
if (len <= 0)
throw win_utf16();
UTF16 ret(new wchar_t[len]);
const int len2 = ::MultiByteToWideChar(cp,
0,
str.c_str(),
-1,
ret.get(),
len);
if (len != len2)
throw win_utf16();
return ret.release();
}
inline size_t utf16_strlen(const wchar_t *str)
{
return ::wcslen(str);
}
inline char *utf8(wchar_t *str)
{
// first get output length (return value includes space for trailing nul)
const int len = ::WideCharToMultiByte(CP_UTF8,
0,
str,
-1,
NULL,
0,
NULL,
NULL);
if (len <= 0)
throw win_utf16();
UTF8 ret(new char[len]);
const int len2 = ::WideCharToMultiByte(CP_UTF8,
0,
str,
-1,
ret.get(),
len,
NULL,
NULL);
if (len != len2)
throw win_utf16();
return ret.release();
}
} // namespace openvpn::Win
#endif
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