diff options
Diffstat (limited to 'libcxx/src/fstream.cpp')
-rw-r--r-- | libcxx/src/fstream.cpp | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/libcxx/src/fstream.cpp b/libcxx/src/fstream.cpp new file mode 100644 index 0000000..55a4442 --- /dev/null +++ b/libcxx/src/fstream.cpp @@ -0,0 +1,37 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include <__config> +#include <cstdio> +#include <fstream> + +#if defined(_LIBCPP_WIN32API) +# define WIN32_LEAN_AND_MEAN +# define NOMINMAX +# include <io.h> +# include <windows.h> +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if defined(_LIBCPP_WIN32API) + +// Confirm that `HANDLE` is `void*` as implemented in `basic_filebuf` +static_assert(std::same_as<HANDLE, void*>); + +_LIBCPP_EXPORTED_FROM_ABI void* __filebuf_windows_native_handle(FILE* __file) noexcept { + // https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/get-osfhandle?view=msvc-170 + intptr_t __handle = _get_osfhandle(fileno(__file)); + if (__handle == -1) + return nullptr; + return reinterpret_cast<void*>(__handle); +} + +#endif + +_LIBCPP_END_NAMESPACE_STD |