ceph/src/boost/libs/filesystem/example/tut4.cpp

   1 //  filesystem tut4.cpp  ---------------------------------------------------------------//
   2
   3 //  Copyright Beman Dawes 2009
   4
   5 //  Distributed under the Boost Software License, Version 1.0.
   6 //  See http://www.boost.org/LICENSE_1_0.txt
   7
   8 //  Library home page: http://www.boost.org/libs/filesystem
   9
  10 #include <iostream>
  11 #include <vector>
  12 #include <algorithm>
  13 #include <boost/filesystem.hpp>
  14 using std::cout;
  15 using namespace boost::filesystem;
  16
  17 int main(int argc, char* argv[])
  18 {
  19   if (argc < 2)
  20   {
  21     cout << "Usage: tut4 path\n";
  22     return 1;
  23   }
  24
  25   path p (argv[1]);
  26
  27   try
  28   {
  29     if (exists(p))
  30     {
  31       if (is_regular_file(p))
  32         cout << p << " size is " << file_size(p) << '\n';
  33
  34       else if (is_directory(p))
  35       {
  36         cout << p << " is a directory containing:\n";
  37
  38         std::vector<path> v;
  39
  40         for (auto&& x : directory_iterator(p))
  41           v.push_back(x.path());
  42
  43         std::sort(v.begin(), v.end());
  44
  45         for (auto&& x : v)
  46           cout << "    " << x.filename() << '\n';
  47       }
  48       else
  49         cout << p << " exists, but is not a regular file or directory\n";
  50     }
  51     else
  52       cout << p << " does not exist\n";
  53   }
  54
  55   catch (const filesystem_error& ex)
  56   {
  57     cout << ex.what() << '\n';
  58   }
  59
  60   return 0;
  61 }