libstdc++-v3/testsuite/27_io/filesystem/path/generation/proximate.cc

   1 // Copyright (C) 2017-2019 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-options "-std=gnu++17 -lstdc++fs" }
  19 // { dg-do run { target c++17 } }
  20 // { dg-require-filesystem-ts "" }
  21
  22 #include <filesystem>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_fs.h>
  25
  26 using std::filesystem::path;
  27 using __gnu_test::compare_paths;
  28
  29 // Normalize directory-separators
  30 std::string operator""_norm(const char* s, std::size_t n)
  31 {
  32   std::string str(s, n);
  33 #if defined(__MING32__) || defined(__MINGW64__)
  34   for (auto& c : str)
  35     if (c == '/')
  36       c = '\\';
  37 #endif
  38   return str;
  39 }
  40
  41 void
  42 test01()
  43 {
  44   // C++17 [fs.path.gen] p5
  45   compare_paths( path("/a/d").lexically_proximate("/a/b/c"), "../../d"_norm );
  46   compare_paths( path("/a/b/c").lexically_proximate("/a/d"), "../b/c"_norm );
  47   compare_paths( path("a/b/c").lexically_proximate("a"), "b/c"_norm );
  48   compare_paths( path("a/b/c").lexically_proximate("a/b/c/x/y"), "../.."_norm );
  49   compare_paths( path("a/b/c").lexically_proximate("a/b/c"), "."_norm );
  50   compare_paths( path("a/b").lexically_proximate("c/d"), "../../a/b"_norm );
  51 }
  52
  53 void
  54 test02()
  55 {
  56   path p = "a/b/c";
  57   compare_paths( p.lexically_proximate(p), "." );
  58   compare_paths( p.lexically_proximate("a/../a/b/../b/c/../c/."),
  59                  "../../b/c"_norm );
  60   compare_paths( p.lexically_proximate("../../../"), p );
  61 }
  62
  63 int
  64 main()
  65 {
  66   test01();
  67   test02();
  68 }