Function directory_iterator_construct

src/directory.cpp:1198–1268

}

BOOST_FILESYSTEM_DECL
void directory_iterator_construct(directory_iterator& it, path const& p, directory_options opts, directory_iterator_params* params, system::error_code* ec)
{
    // At most one of the two options may be specified, and follow_directory_symlink is ignored for directory_iterator.
    BOOST_ASSERT((opts & (directory_options::follow_directory_symlink | directory_options::_detail_no_follow)) != (directory_options::follow_directory_symlink | directory_options::_detail_no_follow));

    if (BOOST_UNLIKELY(p.empty()))
    {
        emit_error(not_found_error_code, p, ec, "boost::filesystem::directory_iterator::construct");
        return;
    }

    if (ec)
        ec->clear();

    try
    {
        boost::intrusive_ptr< detail::dir_itr_imp > imp;
        path filename;
        file_status file_stat, symlink_file_stat;
        system::error_code result = dir_itr_create(imp, p, opts, params, filename, file_stat, symlink_file_stat);

        while (true)
        {
            if (result)
            {
                if (result != make_error_condition(system::errc::permission_denied) ||
                    (opts & directory_options::skip_permission_denied) == directory_options::none)
                {
                    if (!ec)
                        BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::directory_iterator::construct", p, result));
                    *ec = result;
                }

                return;
            }

            if (imp->handle == nullptr) // eof, make end
                return;

            // Not eof
            const path::string_type::value_type* filename_str = filename.c_str();
            if (!(filename_str[0] == path::dot // dot or dot-dot
                && (filename_str[1] == static_cast< path::string_type::value_type >('\0') ||
                    (filename_str[1] == path::dot && filename_str[2] == static_cast< path::string_type::value_type >('\0')))))
            {
                path full_path(p);
                path_algorithms::append_v4(full_path, filename);
                imp->dir_entry.assign_with_status
                (
                    static_cast< path&& >(full_path),
                    file_stat,
                    symlink_file_stat
                );
                it.m_imp.swap(imp);
                return;
            }