mirror of
https://github.com/jart/cosmopolitan.git
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100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___FILESYSTEM_U8PATH_H
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#define _LIBCPP___FILESYSTEM_U8PATH_H
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#include <__algorithm/unwrap_iter.h>
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#include <__config>
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#include <__filesystem/path.h>
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#include <string>
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// Only required on Windows for __widen_from_utf8, and included conservatively
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// because it requires support for localization.
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#if defined(_LIBCPP_WIN32API)
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# include <locale>
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER >= 17
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_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
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_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
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template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _InputIt __l) {
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static_assert(
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# ifndef _LIBCPP_HAS_NO_CHAR8_T
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is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value ||
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# endif
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is_same<typename __is_pathable<_InputIt>::__char_type, char>::value,
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"u8path(Iter, Iter) requires Iter have a value_type of type 'char'"
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" or 'char8_t'");
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# if defined(_LIBCPP_WIN32API)
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string __tmp(__f, __l);
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using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>;
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std::wstring __w;
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__w.reserve(__tmp.size());
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_CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size());
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return path(__w);
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# else
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return path(__f, __l);
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# endif /* !_LIBCPP_WIN32API */
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}
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# if defined(_LIBCPP_WIN32API)
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template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _NullSentinel) {
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static_assert(
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# ifndef _LIBCPP_HAS_NO_CHAR8_T
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is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value ||
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# endif
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is_same<typename __is_pathable<_InputIt>::__char_type, char>::value,
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"u8path(Iter, Iter) requires Iter have a value_type of type 'char'"
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" or 'char8_t'");
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string __tmp;
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const char __sentinel = char{};
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for (; *__f != __sentinel; ++__f)
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__tmp.push_back(*__f);
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using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>;
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std::wstring __w;
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__w.reserve(__tmp.size());
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_CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size());
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return path(__w);
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}
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# endif /* _LIBCPP_WIN32API */
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template <class _Source, __enable_if_t<__is_pathable<_Source>::value, int> = 0>
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_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(const _Source& __s) {
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static_assert(
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# ifndef _LIBCPP_HAS_NO_CHAR8_T
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is_same<typename __is_pathable<_Source>::__char_type, char8_t>::value ||
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# endif
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is_same<typename __is_pathable<_Source>::__char_type, char>::value,
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"u8path(Source const&) requires Source have a character type of type "
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"'char' or 'char8_t'");
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# if defined(_LIBCPP_WIN32API)
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using _Traits = __is_pathable<_Source>;
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return u8path(std::__unwrap_iter(_Traits::__range_begin(__s)), std::__unwrap_iter(_Traits::__range_end(__s)));
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# else
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return path(__s);
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# endif
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}
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_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP
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_LIBCPP_END_NAMESPACE_FILESYSTEM
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#endif // _LIBCPP_STD_VER >= 17
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#endif // _LIBCPP___FILESYSTEM_U8PATH_H
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