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
34template <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)
56template <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
77template <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