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 <__locale>
17#include <string>
18
19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
20#  pragma GCC system_header
21#endif
22
23#if _LIBCPP_STD_VER >= 17
24
25_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
26
27_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
28
29template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0>
30_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _InputIt __l) {
31  static_assert(
32#  if _LIBCPP_HAS_CHAR8_T
33      is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value ||
34#  endif
35          is_same<typename __is_pathable<_InputIt>::__char_type, char>::value,
36      "u8path(Iter, Iter) requires Iter have a value_type of type 'char'"
37      " or 'char8_t'");
38#  if defined(_LIBCPP_WIN32API)
39  string __tmp(__f, __l);
40  using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>;
41  std::wstring __w;
42  __w.reserve(__tmp.size());
43  _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size());
44  return path(__w);
45#  else
46  return path(__f, __l);
47#  endif /* !_LIBCPP_WIN32API */
48}
49
50#  if defined(_LIBCPP_WIN32API)
51template <class _InputIt, __enable_if_t<__is_pathable<_InputIt>::value, int> = 0>
52_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(_InputIt __f, _NullSentinel) {
53  static_assert(
54#    if _LIBCPP_HAS_CHAR8_T
55      is_same<typename __is_pathable<_InputIt>::__char_type, char8_t>::value ||
56#    endif
57          is_same<typename __is_pathable<_InputIt>::__char_type, char>::value,
58      "u8path(Iter, Iter) requires Iter have a value_type of type 'char'"
59      " or 'char8_t'");
60  string __tmp;
61  const char __sentinel = char{};
62  for (; *__f != __sentinel; ++__f)
63    __tmp.push_back(*__f);
64  using _CVT = __widen_from_utf8<sizeof(wchar_t) * __CHAR_BIT__>;
65  std::wstring __w;
66  __w.reserve(__tmp.size());
67  _CVT()(back_inserter(__w), __tmp.data(), __tmp.data() + __tmp.size());
68  return path(__w);
69}
70#  endif /* _LIBCPP_WIN32API */
71
72template <class _Source, __enable_if_t<__is_pathable<_Source>::value, int> = 0>
73_LIBCPP_HIDE_FROM_ABI _LIBCPP_DEPRECATED_WITH_CHAR8_T path u8path(const _Source& __s) {
74  static_assert(
75#  if _LIBCPP_HAS_CHAR8_T
76      is_same<typename __is_pathable<_Source>::__char_type, char8_t>::value ||
77#  endif
78          is_same<typename __is_pathable<_Source>::__char_type, char>::value,
79      "u8path(Source const&) requires Source have a character type of type "
80      "'char' or 'char8_t'");
81#  if defined(_LIBCPP_WIN32API)
82  using _Traits = __is_pathable<_Source>;
83  return u8path(std::__unwrap_iter(_Traits::__range_begin(__s)), std::__unwrap_iter(_Traits::__range_end(__s)));
84#  else
85  return path(__s);
86#  endif
87}
88
89_LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP
90
91_LIBCPP_END_NAMESPACE_FILESYSTEM
92
93#endif // _LIBCPP_STD_VER >= 17
94
95#endif // _LIBCPP___FILESYSTEM_U8PATH_H