1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___FILESYSTEM_U8PATH_H 11 #define _LIBCPP___FILESYSTEM_U8PATH_H 12 13 #include <__algorithm/unwrap_iter.h> 14 #include <__config> 15 #include <__filesystem/path.h> 16 #include <string> 17 18 // Only required on Windows for __widen_from_utf8, and included conservatively 19 // because it requires support for localization. 20 #if defined(_LIBCPP_WIN32API) 21 # include <locale> 22 #endif 23 24 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 25 # pragma GCC system_header 26 #endif 27 28 #if _LIBCPP_STD_VER >= 17 29 30 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 31 32 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH 33 34 template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0> 35 _LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _InputIt __l) { 36 static_assert( 37 # ifndef _LIBCPP_HAS_NO_CHAR8_T 38 is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value || 39 # endif 40 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 41 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" 42 " or 'char8_t'"); 43 # if defined(_LIBCPP_WIN32API) 44 string __tmp(__f, __l); 45 using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>; 46 std::wstring __w; 47 __w.reserve(__tmp.size()); 48 _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); 49 return path(__w); 50 # else 51 return path(__f, __l); 52 # endif /* !_LIBCPP_WIN32API */ 53 } 54 55 # if defined(_LIBCPP_WIN32API) 56 template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0> 57 _LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _NullSentinel) { 58 static_assert( 59 # ifndef _LIBCPP_HAS_NO_CHAR8_T 60 is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value || 61 # endif 62 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 63 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" 64 " or 'char8_t'"); 65 string __tmp; 66 const char __sentinel = char{}; 67 for (; *__f != __sentinel; ++__f) 68 __tmp.push_back(*__f); 69 using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>; 70 std::wstring __w; 71 __w.reserve(__tmp.size()); 72 _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); 73 return path(__w); 74 } 75 # endif /* _LIBCPP_WIN32API */ 76 77 template <class _Source, __enable_if_t<__is_pathable<_Source>::value, int> = 0> 78 _LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(const _Source& __s) { 79 static_assert( 80 # ifndef _LIBCPP_HAS_NO_CHAR8_T 81 is_same<typename __is_pathable<_Source>::__char_type, char8_t>::value || 82 # endif 83 is_same<typename __is_pathable<_Source>::__char_type, char>::value, 84 "u8path(Source const&) requires Source have a character type of type " 85 "'char' or 'char8_t'"); 86 # if defined(_LIBCPP_WIN32API) 87 using _Traits = __is_pathable<_Source>; 88 return u8path(std::__unwrap_iter(_Traits::__range_begin(__s)), std::__unwrap_iter(_Traits::__range_end(__s))); 89 # else 90 return path(__s); 91 # endif 92 } 93 94 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP 95 96 _LIBCPP_END_NAMESPACE_FILESYSTEM 97 98 #endif // _LIBCPP_STD_VER >= 17 99 100 #endif // _LIBCPP___FILESYSTEM_U8PATH_H 101