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 #ifndef _LIBCPP_CXX03_LANG 30 31 _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM 32 33 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH 34 35 template <class _InputIt> 36 _LIBCPP_INLINE_VISIBILITY _LIBCPP_DEPRECATED_WITH_CHAR8_T 37 typename enable_if<__is_pathable<_InputIt>::value, path>::type 38 u8path(_InputIt __f, _InputIt __l) { 39 static_assert( 40 #ifndef _LIBCPP_HAS_NO_CHAR8_T 41 is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value || 42 #endif 43 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 44 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" 45 " or 'char8_t'"); 46 #if defined(_LIBCPP_WIN32API) 47 string __tmp(__f, __l); 48 using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>; 49 _VSTD::wstring __w; 50 __w.reserve(__tmp.size()); 51 _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); 52 return path(__w); 53 #else 54 return path(__f, __l); 55 #endif /* !_LIBCPP_WIN32API */ 56 } 57 58 #if defined(_LIBCPP_WIN32API) 59 template <class _InputIt> 60 _LIBCPP_INLINE_VISIBILITY _LIBCPP_DEPRECATED_WITH_CHAR8_T 61 typename enable_if<__is_pathable<_InputIt>::value, path>::type 62 u8path(_InputIt __f, _NullSentinel) { 63 static_assert( 64 #ifndef _LIBCPP_HAS_NO_CHAR8_T 65 is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value || 66 #endif 67 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 68 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'" 69 " or 'char8_t'"); 70 string __tmp; 71 const char __sentinel = char{}; 72 for (; *__f != __sentinel; ++__f) 73 __tmp.push_back(*__f); 74 using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>; 75 _VSTD::wstring __w; 76 __w.reserve(__tmp.size()); 77 _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size()); 78 return path(__w); 79 } 80 #endif /* _LIBCPP_WIN32API */ 81 82 template <class _Source> 83 _LIBCPP_INLINE_VISIBILITY _LIBCPP_DEPRECATED_WITH_CHAR8_T 84 typename enable_if<__is_pathable<_Source>::value, path>::type 85 u8path(const _Source& __s) { 86 static_assert( 87 #ifndef _LIBCPP_HAS_NO_CHAR8_T 88 is_same<typename __is_pathable<_Source>::__char_type, char8_t>::value || 89 #endif 90 is_same<typename __is_pathable<_Source>::__char_type, char>::value, 91 "u8path(Source const&) requires Source have a character type of type " 92 "'char' or 'char8_t'"); 93 #if defined(_LIBCPP_WIN32API) 94 using _Traits = __is_pathable<_Source>; 95 return u8path(_VSTD::__unwrap_iter(_Traits::__range_begin(__s)), _VSTD::__unwrap_iter(_Traits::__range_end(__s))); 96 #else 97 return path(__s); 98 #endif 99 } 100 101 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP 102 103 _LIBCPP_END_NAMESPACE_FILESYSTEM 104 105 #endif // _LIBCPP_CXX03_LANG 106 107 #endif // _LIBCPP___FILESYSTEM_U8PATH_H 108