зеркало из https://github.com/microsoft/STL.git
79 строки
3.1 KiB
C++
79 строки
3.1 KiB
C++
// __msvc_print.hpp internal header (core)
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// Copyright (c) Microsoft Corporation.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef __MSVC_PRINT_HPP
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#define __MSVC_PRINT_HPP
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#include <yvals_core.h>
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#if _STL_COMPILER_PREPROCESSOR
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#ifndef __cpp_lib_concepts // note: <format> includes this header in C++20 mode
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#error The contents of <print> are available only with C++23. (Also, you should not include this internal header.)
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#endif // ^^^ !defined(__cpp_lib_concepts) ^^^
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#include <cstdio>
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#include <xfilesystem_abi.h>
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#pragma pack(push, _CRT_PACKING)
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#pragma warning(push, _STL_WARNING_LEVEL)
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#pragma warning(disable : _STL_DISABLED_WARNINGS)
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_STL_DISABLE_CLANG_WARNINGS
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#pragma push_macro("new")
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#undef new
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extern "C" {
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enum class __std_unicode_console_handle : intptr_t { _Invalid = -1 };
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struct __std_unicode_console_retrieval_result {
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__std_unicode_console_handle _Console_handle;
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// For this, we have a few potential return values:
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//
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// - __std_win_error::_Success: The operation completed successfully. This is the only value for which the
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// _Console_handle field has a well-defined value.
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//
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// - __std_win_error::_File_not_found: The FILE* provided is valid, but it is determined to not be associated
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// with a unicode console. In this case, printing should fall back to vprint_nonunicode().
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//
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// - __std_win_error::_Not_supported: The FILE* provided does not actually have an associated output stream. In
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// this case, the entire print can safely be elided, thanks to the "as-if" rule.
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// (We haven't observed this happening in practice. Console applications with stdout redirected to NUL
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// and Windows applications both appear to activate the __std_win_error::_File_not_found "valid, but
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// not a unicode console" codepath.)
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//
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// - __std_win_error::_Invalid_parameter: The FILE* provided is invalid. A std::system_error exception should be
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// thrown if this value is returned within the FILE* overload of vprint_unicode().
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__std_win_error _Error;
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};
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_NODISCARD _Success_(return._Error == __std_win_error::_Success) __std_unicode_console_retrieval_result
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__stdcall __std_get_unicode_console_handle_from_file_stream(_In_ FILE* _Stream) noexcept;
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_NODISCARD _Success_(return == __std_win_error::_Success) __std_win_error
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__stdcall __std_print_to_unicode_console(_In_ __std_unicode_console_handle _Console_handle,
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_In_reads_(_Str_size) const char* _Str, _In_ size_t _Str_size) noexcept;
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} // extern "C"
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_STD_BEGIN
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_NODISCARD consteval bool _Is_ordinary_literal_encoding_utf8() {
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// See: https://learn.microsoft.com/en-us/windows/win32/intl/code-page-identifiers
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#if defined(_MSVC_EXECUTION_CHARACTER_SET) && _MSVC_EXECUTION_CHARACTER_SET == 65001 // Unicode (UTF-8) == 65001
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return true;
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#else
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return false;
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#endif
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}
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_STD_END
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#pragma pop_macro("new")
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_STL_RESTORE_CLANG_WARNINGS
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#pragma warning(pop)
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#pragma pack(pop)
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#endif // _STL_COMPILER_PREPROCESSOR
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#endif // __MSVC_PRINT_HPP
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