directory_functions.hpp

新版本TR1的stl

                    }
                    else
                    {
                        // It has some contents, so we need to remove them

                        file_path_buffer_t          sz;
                        DIR                         *hSrch;
                        us_size_t                   n;

                        traits_t::str_copy(&sz[0], dir);
                        traits_t::ensure_dir_end(&sz[0]);
                        n = traits_t::str_len(sz.c_str());

                        hSrch = traits_t::open_dir(sz.c_str());
                        if(NULL == hSrch)
                        {
                            dwRet = traits_t::get_last_error();
                        }
                        else
                        {
                            dwRet = 0;

                            for(struct dirent const* de; 0 == dwRet && NULL != (de = traits_t::read_dir(hSrch)); )
                            {
                                if(!traits_t::is_dots(de->d_name))
                                {
                                    ss_typename_type_k traits_t::stat_data_type st;

                                    traits_t::str_copy(&sz[0] + n, de->d_name);
                                    if(!traits_t::stat(sz.c_str(), &st))
                                    {
                                        dwRet = traits_t::get_last_error();

                                        if(NULL != pfn)
                                        {
                                            (void)(*pfn)(param, dir, NULL, de, dwRet);
                                        }
                                    }
                                    else
                                    {
                                        if(traits_t::is_file(&st))
                                        {
                                            // If it's a file, the pfn must be consulted, otherwise
                                            // it's an automatic failure

                                            if( NULL == pfn ||
                                                !(*pfn)(param, dir, &st, de, 0))
                                            {
                                                dwRet = ENOTEMPTY;

                                                if(NULL != pfn)
                                                {
                                                    (void)(*pfn)(param, dir, &st, de, dwRet);
                                                }

                                                break;
                                            }
                                            else
                                            {
                                                if(!traits_t::delete_file(sz.c_str()))
                                                {
                                                    dwRet = traits_t::get_last_error();

                                                    if(NULL != pfn)
                                                    {
                                                        (void)(*pfn)(param, dir, &st, de, dwRet);
                                                    }

                                                    break;
                                                }
                                            }
                                        }
                                        else
                                        {
                                            // If it's a directory, then pfn is consulted, otherwise
                                            // it's an automatic attempt to recursively delete
                                            if( NULL != pfn &&
                                                !(*pfn)(param, dir, &st, de, 0))
                                            {
                                                dwRet = ENOTEMPTY;

                                                if(NULL != pfn)
                                                {
                                                    (void)(*pfn)(param, dir, &st, de, dwRet);
                                                }

                                                break;
                                            }
                                            else
                                            {
                                                dwRet = remove_directory_recurse_impl(sz.c_str(), pfn, param);
                                            }
                                        }
                                    }
                                }
                            }

                            traits_t::close_dir(hSrch);

                            if(0 == dwRet)
                            {
                                if(traits_t::remove_directory(dir))
                                {
                                    if(NULL != pfn)
                                    {
                                        (void)(*pfn)(param, dir, NULL, NULL, 0); // Deleted
                                    }
                                }
                                else
                                {
                                    dwRet = traits_t::get_last_error();
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    return dwRet;
}

/* /////////////////////////////////////////////////////////////////////////
 * Functions
 */

/** \brief Creates the given directory, including all its parent directories, applying
 * the given mode.
 *
 * \ingroup group__library__filesystem
 *
 * \param dir The path of the directory to create
 * \param mode The permissions with which each directory is to be created
 */
inline us_bool_t create_directory_recurse(us_char_a_t const* dir, unsigned short mode = 0755)
{
    return create_directory_recurse_impl(dir, mode);
}

#if 0
/** \brief Creates the given directory, including all its parent directories, applying
 * the given mode.
 *
 * \ingroup group__library__filesystem
 *
 * \param dir The path of the directory to create
 * \param mode The permissions with which each directory is to be created
 */
inline us_bool_t create_directory_recurse(us_char_w_t const* dir, unsigned short mode = 0755)
{
    return create_directory_recurse_impl(dir, mode);
}
#endif /* 0 */

/** \brief Creates the given directory, including all its parent directories, applying
 * the given mode.
 *
 * \ingroup group__library__filesystem
 *
 * \param dir The path of the directory to create
 * \param mode The permissions with which each directory is to be created
 */
template <ss_typename_param_k S>
inline us_bool_t create_directory_recurse(S const& dir, unsigned short mode = 0755)
{
    return create_directory_recurse(stlsoft_ns_qual(c_str_ptr)(dir), mode);
}

/** \brief Removes the given directory, and all its subdirectories.
 *
 * \ingroup group__library__filesystem
 *
 * \param dir The path of the directory to remove
 * \param pfn Pointer to a callback function, which will receive notifications
 *         and requests for file/directory deletion. The semantics of the
 *         parameters are specified in the note below
 * \param param Caller-supplied parameter, passed through to the callback
 *         function
 *
 * \note If no callback function is specified, then the function will remove
 *        only empty subdirectories, i.e. no files will be removed. To remove
 *        files, a function must be
 *
 * \note The semantics of the callback function's parameters are as follows:
 * \par If the err param is ~0 (-1 on UNIX), then the dir param specifies
 *       the name of the current directory being traversed. All other params
 *       are unspecified. The return value is ignored.
 * \par If the err param is 0 and the st param is NULL, then dir specifies
 *       the name of a directory that has been successfully removed. All
 *       other params are unspecified. The return value is ignored.
 * \par If the err param is 0 and the st param is not NULL, then dir specifies
 *       the name of the currently traversing directory, st specifies the
 *       stat information for the entry to be deleted, and de specifies the
 *       name of the entry within directory dir that is a candidate for
 *       removal. Return true to enable removal of this entry, or false to
 *       prevent removal (and cancel the overall operation). All
 *       other params are unspecified. The return value is ignored.
 * \par If the err param is any other value, and the st param is NULL, then
 *       the dir param specifies the name of a directory that could not be
 *       deleted and err specifies the errno value associated with the failure.
 *       All other params are unspecified. The return value is ignored.
 * \par If the err param is any other value, and the st param is not NULL, then
 *       the dir param specifies the name of a directory within which an entry
 *       could not be deleted, st specifies the stat information of the entry
 *       that could not be deleted, de specifies the name of the entry that
 *       could not be deleted, and err specifies the errno value associated
 *       with the failure. All other params are unspecified. The return value
 *       is ignored.
 */
inline us_bool_t remove_directory_recurse(  us_char_a_t const*  dir
                                        ,   us_int_t            (*pfn)(void* param, us_char_a_t const* subDir, struct stat const* st, struct dirent const* de, int err)
                                        ,   void*               param)
{
    typedef filesystem_traits<us_char_a_t>  traits_t;

    us_int_t  dwRet   =   remove_directory_recurse_impl<us_char_a_t, struct stat>(dir, pfn, param);

    traits_t::set_last_error(dwRet);

    return 0 == dwRet;
}

/** \brief 
 *
 * \ingroup group__library__filesystem
 */
inline us_bool_t remove_directory_recurse(us_char_a_t const* dir)
{
    return remove_directory_recurse(dir, NULL, NULL);
}

#if 0
/** \brief 
 *
 * \ingroup group__library__filesystem
 */
inline us_bool_t remove_directory_recurse(  us_char_w_t const*  dir
                                        ,   us_int_t            (*pfn)(void* param, us_char_w_t const* subDir, struct stat const* st, struct dirent const* de, int err)
                                        ,   void*               param)
{
    typedef filesystem_traits<us_char_w_t>  traits_t;

    us_int_t  dwRet   =   remove_directory_recurse_impl<us_char_w_t, struct stat>(dir, pfn, param);

    traits_t::set_last_error(dwRet);

    return 0 == dwRet;
}

/** \brief 
 *
 * \ingroup group__library__filesystem
 */
inline us_bool_t remove_directory_recurse(us_char_w_t const* dir)
{
    return remove_directory_recurse(dir, NULL, NULL);
}
#endif /* 0 */

/** \brief 
 *
 * \ingroup group__library__filesystem
 */
template <ss_typename_param_k S>
inline us_bool_t remove_directory_recurse(S const& dir)
{
    typedef filesystem_traits<us_char_a_t>  traits_t;

    us_int_t  dwRet   =   remove_directory_recurse(stlsoft_ns_qual(c_str_ptr)(dir), NULL, NULL);

    traits_t::set_last_error(dwRet);

    return 0 == dwRet;
}

/* /////////////////////////////////////////////////////////////////////////
 * Unit-testing
 */

#ifdef STLSOFT_UNITTEST
# include "./unittest/directory_functions_unittest_.h"
#endif /* STLSOFT_UNITTEST */

/* ////////////////////////////////////////////////////////////////////// */

#ifndef _UNIXSTL_NO_NAMESPACE
# if defined(_STLSOFT_NO_NAMESPACE) || \
     defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
} // namespace unixstl
# else
} // namespace unixstl_project
} // namespace stlsoft
# endif /* _STLSOFT_NO_NAMESPACE */
#endif /* !_UNIXSTL_NO_NAMESPACE */

/* ////////////////////////////////////////////////////////////////////// */

#endif /* UNIXSTL_INCL_UNIXSTL_FILESYSTEM_HPP_DIRECTORY_FUNCTIONS */

/* ////////////////////////////////////////////////////////////////////// */