libstdc++-v3/testsuite/util/testsuite_fs.h

   1 // -*- C++ -*-
   2 // Filesystem utils for the C++ library testsuite.
   3 //
   4 // Copyright (C) 2014-2016 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20 //
  21
  22 #ifndef _TESTSUITE_FS_H
  23 #define _TESTSUITE_FS_H 1
  24
  25 #include <experimental/filesystem>
  26 #include <iostream>
  27 #include <string>
  28 #include <cstdio>
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31
  32 namespace __gnu_test
  33 {
  34 #define PATH_CHK(p1, p2, fn) \
  35     if ( p1.fn() != p2.fn() ) \
  36       throw std::experimental::filesystem::filesystem_error( #fn, p1, p2, \
  37           std::make_error_code(std::errc::invalid_argument) )
  38
  39   void
  40   compare_paths(const std::experimental::filesystem::path& p1,
  41                 const std::experimental::filesystem::path& p2)
  42   {
  43     // std::cout << "Comparing " << p1 << " and " << p2 << std::endl;
  44     PATH_CHK( p1, p2, string );
  45     PATH_CHK( p1, p2, empty );
  46     PATH_CHK( p1, p2, has_root_path );
  47     PATH_CHK( p1, p2, has_root_name );
  48     PATH_CHK( p1, p2, has_root_directory );
  49     PATH_CHK( p1, p2, has_relative_path );
  50     PATH_CHK( p1, p2, has_parent_path );
  51     PATH_CHK( p1, p2, has_filename );
  52     PATH_CHK( p1, p2, has_stem );
  53     PATH_CHK( p1, p2, has_extension );
  54     PATH_CHK( p1, p2, is_absolute );
  55     PATH_CHK( p1, p2, is_relative );
  56     auto d1 = std::distance(p1.begin(), p1.end());
  57     auto d2 = std::distance(p2.begin(), p2.end());
  58     if( d1 != d2 )
  59       throw std::experimental::filesystem::filesystem_error(
  60           "distance(begin, end)", p1, p2,
  61           std::make_error_code(std::errc::invalid_argument) );
  62   }
  63
  64   const std::string test_paths[] = {
  65     "", "/", "//", "/.", "/./", "/a", "/a/", "/a//", "/a/b/c/d", "/a//b",
  66     "a", "a/b", "a/b/", "a/b/c", "a/b/c.d", "a/b/..", "a/b/c.", "a/b/.c"
  67   };
  68
  69   // This is NOT supposed to be a secure way to get a unique name!
  70   // We just need a path that doesn't exist for testing purposes.
  71   std::experimental::filesystem::path
  72   nonexistent_path()
  73   {
  74     std::experimental::filesystem::path p;
  75 #if defined(_GNU_SOURCE) || _XOPEN_SOURCE >= 500 || _POSIX_C_SOURCE >= 200112L
  76     char tmp[] = "filesystem-ts-test.XXXXXX";
  77     int fd = ::mkstemp(tmp);
  78     if (fd == -1)
  79       throw std::experimental::filesystem::filesystem_error("mkstemp failed",
  80           std::error_code(errno, std::generic_category()));
  81     ::unlink(tmp);
  82     ::close(fd);
  83     p = tmp;
  84 #else
  85     char buf[64];
  86     static int counter;
  87 #if _GLIBCXX_USE_C99_STDIO
  88     std::snprintf(buf, 64,
  89 #else
  90     std::sprintf(buf,
  91 #endif
  92       "filesystem-ts-test.%d.%lu", counter++, (unsigned long) ::getpid());
  93     p = buf;
  94 #endif
  95     return p;
  96   }
  97
  98 } // namespace __gnu_test
  99 #endif