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 <__availability> 15 #include <__config> 16 #include <__filesystem/path.h> 17 #include <string> 18 19 // Only required on Windows for __widen_from_utf8, and included conservatively 20 // because it requires support for localization. 21 #if defined(_LIBCPP_WIN32API) 22 # include <locale> 23 #endif 24 25 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 26 # pragma GCC system_header 27 #endif 28 29 #if _LIBCPP_STD_VER >= 17 30 31 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 32 33 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH 34 35 template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0> 36 _LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _InputIt __l) { 37 static_assert( 38 # ifndef _LIBCPP_HAS_NO_CHAR8_T 39 is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value || 40 # endif 41 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 42 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" 43 " or 'char8_t'"); 44 # if defined(_LIBCPP_WIN32API) 45 string __tmp(__f, __l); 46 using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>; 47 std::wstring __w; 48 __w.reserve(__tmp.size()); 49 _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); 50 return path(__w); 51 # else 52 return path(__f, __l); 53 # endif /* !_LIBCPP_WIN32API */ 54 } 55 56 # if defined(_LIBCPP_WIN32API) 57 template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0> 58 _LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _NullSentinel) { 59 static_assert( 60 # ifndef _LIBCPP_HAS_NO_CHAR8_T 61 is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value || 62 # endif 63 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 64 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" 65 " or 'char8_t'"); 66 string __tmp; 67 const char __sentinel = char{}; 68 for (; *__f != __sentinel; ++__f) 69 __tmp.push_back(*__f); 70 using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>; 71 std::wstring __w; 72 __w.reserve(__tmp.size()); 73 _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); 74 return path(__w); 75 } 76 # endif /* _LIBCPP_WIN32API */ 77 78 template <class _Source, __enable_if_t<__is_pathable<_Source>::value, int> = 0> 79 _LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(const _Source& __s) { 80 static_assert( 81 # ifndef _LIBCPP_HAS_NO_CHAR8_T 82 is_same<typename __is_pathable<_Source>::__char_type, char8_t>::value || 83 # endif 84 is_same<typename __is_pathable<_Source>::__char_type, char>::value, 85 "u8path(Source const&) requires Source have a character type of type " 86 "'char' or 'char8_t'"); 87 # if defined(_LIBCPP_WIN32API) 88 using _Traits = __is_pathable<_Source>; 89 return u8path(std::__unwrap_iter(_Traits::__range_begin(__s)), std::__unwrap_iter(_Traits::__range_end(__s))); 90 # else 91 return path(__s); 92 # endif 93 } 94 95 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP 96 97 _LIBCPP_END_NAMESPACE_FILESYSTEM 98 99 #endif // _LIBCPP_STD_VER >= 17 100 101 #endif // _LIBCPP___FILESYSTEM_U8PATH_H 102