1 // Copyright (C) 2017-2021 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
13
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
17
18 // { dg-do run { target c++17 } }
19
20 #include <filesystem>
21 #include <testsuite_hooks.h>
22 #include <testsuite_fs.h>
23
24 using std::filesystem::path;
25 using __gnu_test::compare_paths;
26
27 // Normalize directory-separators
operator ""_norm(const char * s,std::size_t n)28 std::string operator""_norm(const char* s, std::size_t n)
29 {
30 std::string str(s, n);
31 #if defined(__MINGW32__) || defined(__MINGW64__)
32 for (auto& c : str)
33 if (c == '/')
34 c = '\\';
35 #endif
36 return str;
37 }
38
39 void
test01()40 test01()
41 {
42 // C++17 [fs.path.gen] p5
43 compare_paths( path("/a/d").lexically_relative("/a/b/c"), "../../d"_norm );
44 compare_paths( path("/a/b/c").lexically_relative("/a/d"), "../b/c"_norm );
45 compare_paths( path("a/b/c").lexically_relative("a"), "b/c"_norm );
46 compare_paths( path("a/b/c").lexically_relative("a/b/c/x/y"), "../.."_norm );
47 compare_paths( path("a/b/c").lexically_relative("a/b/c"), "." );
48 compare_paths( path("a/b").lexically_relative("c/d"), "../../a/b"_norm );
49 }
50
51 void
test02()52 test02()
53 {
54 path p = "a/b/c";
55 compare_paths( p.lexically_relative(p), "." );
56 compare_paths( p.lexically_relative("a/../a/b/../b/c/../c/."), "../../b/c"_norm );
57 compare_paths( p.lexically_relative("../../../"), "" );
58
59 compare_paths( path("a/./.").lexically_relative("a"), "./."_norm );
60 }
61
62 void
test03()63 test03()
64 {
65 // LWG 3096
66 compare_paths( path("/dir").lexically_relative("/dir"), "." );
67 compare_paths( path("/dir").lexically_relative("/dir/"), "." );
68 compare_paths( path("/dir").lexically_relative("/dir/."), "." );
69
70 compare_paths( path("/dir/").lexically_relative("/dir"), "." );
71 compare_paths( path("/dir/").lexically_relative("/dir/"), "." );
72 compare_paths( path("/dir/").lexically_relative("/dir/."), "." );
73
74 compare_paths( path("/dir/.").lexically_relative("/dir"), "." );
75 compare_paths( path("/dir/.").lexically_relative("/dir/"), "." );
76 compare_paths( path("/dir/.").lexically_relative("/dir/."), "." );
77 }
78
79 void
test04()80 test04()
81 {
82 #if defined(__MINGW32__) || defined(__MINGW64__)
83 // DR 3070
84 compare_paths(path("c:/f:o/bar").lexically_relative("c:/f:o/bar"), ".");
85 compare_paths(path("c:/foo/bar").lexically_relative("c:/foo/b:r"), "..\\bar");
86 compare_paths(path("c:/foo/b:r").lexically_relative("c:/foo/bar"), "..\\b:r");
87 compare_paths(path("c:/foo/b:").lexically_relative("c:/foo/b:"), "");
88 compare_paths(path("c:/foo/bar").lexically_relative("c:/foo/b:"), "");
89 compare_paths(path("c:/f:/bar").lexically_relative("c:/foo/bar"), "");
90 compare_paths(path("foo/bar").lexically_relative("foo/b:/bar"), "");
91 #endif
92 }
93
94 int
main()95 main()
96 {
97 test01();
98 test02();
99 test03();
100 test04();
101 }
102