std::string get_directory_listing( boost::string_view folder ) {
namespace fs = boost::filesystem;
fs::path p { folder.to_string( ) };
std::ostringstream ss;
try {
if( exists( p ) ) {
if( fs::is_regular_file( p ) ) {
ss <<p <<" size is " <<fs::file_size( p ) <<"\r\n";
} else if( fs::is_directory( p ) ) {
ss <<p <<" is a directory containing:\n";
std::copy( fs::directory_iterator( p ), fs::directory_iterator( ), std::ostream_iterator<fs::directory_entry>( ss, "\r\n" ) );
} else {
ss <<p <<" exists, but is neither a regular file nor a directory\n";
}
} else {
ss <<p <<" does not exist\n";
}
}
catch( const fs::filesystem_error& ex ) {
ss <<"ERROR: " <<ex.what( ) <<'\n';
}
return ss.str( );
}
