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// status.cpp ------------------------------------------------------------------------//
// Copyright Beman Dawes 2011
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
// Library home page: http://www.boost.org/libs/filesystem
#include <iostream>
#include <boost/config.hpp>
#include <boost/version.hpp>
#include <boost/filesystem.hpp>
#include <boost/detail/lightweight_main.hpp>
using std::cout; using std::endl;
using namespace boost::filesystem;
namespace
{
path p;
void print_boost_macros()
{
std::cout << "Boost "
<< BOOST_VERSION / 100000 << '.'
<< BOOST_VERSION / 100 % 1000 << '.'
<< BOOST_VERSION % 100 << ", "
# ifndef _WIN64
<< BOOST_COMPILER << ", "
# else
<< BOOST_COMPILER << " with _WIN64 defined, "
# endif
<< BOOST_STDLIB << ", "
<< BOOST_PLATFORM
<< std::endl;
}
const char* file_type_tab[] =
{ "status_error", "file_not_found", "regular_file", "directory_file",
"symlink_file", "block_file", "character_file", "fifo_file", "socket_file",
"type_unknown"
};
const char* file_type_c_str(enum file_type t)
{
return file_type_tab[t];
}
void show_status(file_status s, boost::system::error_code ec)
{
boost::system::error_condition econd;
if (ec)
{
econd = ec.default_error_condition();
cout << "sets ec to indicate an error:\n"
<< " ec.value() is " << ec.value() << '\n'
<< " ec.message() is \"" << ec.message() << "\"\n"
<< " ec.default_error_condition().value() is " << econd.value() << '\n'
<< " ec.default_error_condition().message() is \"" << econd.message() << "\"\n";
}
else
cout << "clears ec.\n";
cout << "s.type() is " << s.type()
<< ", which is defined as \"" << file_type_c_str(s.type()) << "\"\n";
cout << "exists(s) is " << (exists(s) ? "true" : "false") << "\n";
cout << "status_known(s) is " << (status_known(s) ? "true" : "false") << "\n";
cout << "is_regular_file(s) is " << (is_regular_file(s) ? "true" : "false") << "\n";
cout << "is_directory(s) is " << (is_directory(s) ? "true" : "false") << "\n";
cout << "is_other(s) is " << (is_other(s) ? "true" : "false") << "\n";
cout << "is_symlink(s) is " << (is_symlink(s) ? "true" : "false") << "\n";
}
void try_exists()
{
cout << "\nexists(" << p << ") ";
try
{
bool result = exists(p);
cout << "is " << (result ? "true" : "false") << "\n";
}
catch (const filesystem_error& ex)
{
cout << "throws a filesystem_error exception: " << ex.what() << "\n";
}
}
}
int cpp_main(int argc, char* argv[])
{
print_boost_macros();
if (argc < 2)
{
std::cout << "Usage: file_status <path>\n";
p = argv[0];
}
else
p = argv[1];
boost::system::error_code ec;
file_status s = status(p, ec);
cout << "\nfile_status s = status(" << p << ", ec) ";
show_status(s, ec);
s = symlink_status(p, ec);
cout << "\nfile_status s = symlink_status(" << p << ", ec) ";
show_status(s, ec);
try_exists();
return 0;
}
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