| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include <__config> |
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| 10 | #include <cstdio> |
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| 11 | #include <fstream> |
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| 12 | |
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| 13 | #if defined(_LIBCPP_WIN32API) |
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| 14 | # define WIN32_LEAN_AND_MEAN |
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| 15 | # define NOMINMAX |
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| 16 | # include <io.h> |
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| 17 | # include <windows.h> |
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| 18 | #endif |
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| 19 | |
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| 20 | _LIBCPP_BEGIN_NAMESPACE_STD |
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| 21 | |
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| 22 | #if defined(_LIBCPP_WIN32API) |
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| 23 | |
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| 24 | // Confirm that `HANDLE` is `void*` as implemented in `basic_filebuf` |
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| 25 | static_assert(std::same_as<HANDLE, void*>); |
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| 26 | |
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| 27 | _LIBCPP_EXPORTED_FROM_ABI void* __filebuf_windows_native_handle(FILE* __file) noexcept { |
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| 28 | // https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=msvc-170 |
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| 29 | intptr_t __handle = _get_osfhandle(fileno(__file)); |
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| 30 | if (__handle == -1) |
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| 31 | return nullptr; |
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| 32 | return reinterpret_cast<void*>(__handle); |
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| 33 | } |
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| 34 | |
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| 35 | #endif |
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| 36 | |
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| 37 | _LIBCPP_END_NAMESPACE_STD |
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| 38 | |
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