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//===--- Win32.cpp - Win32 utility functions --------------------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// Utility functions that are specific to the Windows port.
//
//===----------------------------------------------------------------------===//
#include "swift/Runtime/Debug.h"
#include "swift/Runtime/Win32.h"
#ifdef _WIN32
#include <windows.h>
char *
_swift_win32_copyUTF8FromWide(const wchar_t *str) {
char *result = nullptr;
int len = ::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS,
str, -1,
nullptr, 0,
nullptr, nullptr);
if (len <= 0)
return nullptr;
result = reinterpret_cast<char *>(std::malloc(len));
if (!result)
return nullptr;
len = ::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS,
str, -1,
result, len,
nullptr, nullptr);
if (len)
return result;
free(result);
return nullptr;
}
wchar_t *
_swift_win32_copyWideFromUTF8(const char *str) {
wchar_t *result = nullptr;
int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
str, -1,
nullptr, 0);
if (len <= 0)
return nullptr;
result = reinterpret_cast<wchar_t *>(std::malloc(len * sizeof(wchar_t)));
if (!result)
return nullptr;
len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
str, -1,
result, len);
if (len)
return result;
free(result);
return nullptr;
}
#endif // defined(_WIN32)
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