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

   1 //  simple_ls program  -------------------------------------------------------//
   2
   3 //  Copyright Jeff Garland and Beman Dawes, 2002
   4
   5 //  Use, modification, and distribution is subject to the Boost Software
   6 //  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 //  http://www.boost.org/LICENSE_1_0.txt)
   8
   9 //  See http://www.boost.org/libs/filesystem for documentation.
  10
  11 #define BOOST_FILESYSTEM_VERSION 3
  12
  13 //  As an example program, we don't want to use any deprecated features
  14 #ifndef BOOST_FILESYSTEM_NO_DEPRECATED
  15 #  define BOOST_FILESYSTEM_NO_DEPRECATED
  16 #endif
  17 #ifndef BOOST_SYSTEM_NO_DEPRECATED
  18 #  define BOOST_SYSTEM_NO_DEPRECATED
  19 #endif
  20
  21 #include <boost/filesystem/operations.hpp>
  22 #include <boost/filesystem/directory.hpp>
  23 #include <boost/filesystem/path.hpp>
  24 #include <iostream>
  25
  26 namespace fs = boost::filesystem;
  27
  28 int main(int argc, char* argv[])
  29 {
  30   fs::path p(fs::current_path());
  31
  32   if (argc > 1)
  33     p = fs::system_complete(argv[1]);
  34   else
  35     std::cout << "\nusage:   simple_ls [path]" << std::endl;
  36
  37   unsigned long file_count = 0;
  38   unsigned long dir_count = 0;
  39   unsigned long other_count = 0;
  40   unsigned long err_count = 0;
  41
  42   if (!fs::exists(p))
  43   {
  44     std::cout << "\nNot found: " << p << std::endl;
  45     return 1;
  46   }
  47
  48   if (fs::is_directory(p))
  49   {
  50     std::cout << "\nIn directory: " << p << "\n\n";
  51     fs::directory_iterator end_iter;
  52     for (fs::directory_iterator dir_itr(p);
  53           dir_itr != end_iter;
  54           ++dir_itr)
  55     {
  56       try
  57       {
  58         if (fs::is_directory(dir_itr->status()))
  59         {
  60           ++dir_count;
  61           std::cout << dir_itr->path().filename() << " [directory]\n";
  62         }
  63         else if (fs::is_regular_file(dir_itr->status()))
  64         {
  65           ++file_count;
  66           std::cout << dir_itr->path().filename() << "\n";
  67         }
  68         else
  69         {
  70           ++other_count;
  71           std::cout << dir_itr->path().filename() << " [other]\n";
  72         }
  73
  74       }
  75       catch (const std::exception & ex)
  76       {
  77         ++err_count;
  78         std::cout << dir_itr->path().filename() << " " << ex.what() << std::endl;
  79       }
  80     }
  81     std::cout << "\n" << file_count << " files\n"
  82               << dir_count << " directories\n"
  83               << other_count << " others\n"
  84               << err_count << " errors\n";
  85   }
  86   else // must be a file
  87   {
  88     std::cout << "\nFound: " << p << "\n";
  89   }
  90
  91   return 0;
  92 }