public static function test_fs()
    {
        //--
        if (SMART_FRAMEWORK_TESTUNIT_ALLOW_FS_TESTS !== true) {
            return SmartComponents::operation_notice('Test Unit File System Tests are DISABLED ...');
        }
        //end if
        //--
        //--
        $time = microtime(true);
        //--
        //--
        $err = '';
        $tests = array();
        //--
        //--
        if ((string) DIRECTORY_SEPARATOR != '\\') {
            // broken links do not work on Windows !
            $tests[] = '##### FileSystem OPERATIONS / TESTS - ALL: #####';
        } else {
            $tests[] = '##### FileSystem OPERATIONS / TESTS *** PARTIAL SUPPORT ONLY (BY PLATFORM) ***: #####';
        }
        //end if else
        //--
        //--
        $test_string = '#START#' . "\n" . 'グッド' . "\n" . 'SmartFramework/Test/FileSystem' . "\n" . time() . "\n" . SMART_FRAMEWORK_HTACCESS_NOINDEXING . SMART_FRAMEWORK_HTACCESS_FORBIDDEN . SMART_FRAMEWORK_HTACCESS_NOEXECUTION . "\n" . '#END#';
        $test_str_cksum = SmartHashCrypto::sha512($test_string);
        $long_prefixed = SmartFileSysUtils::prefixed_sha1_path(sha1(time()));
        $short_prefixed = SmartFileSysUtils::prefixed_uuid10_dir(Smart::uuid_10_seq());
        //--
        $the_base_folder = 'tmp/tests/';
        $the_sufx_folder = 'Folder1';
        $the_base_file = 'NORMAL-Write_123_@#.txt';
        //--
        $the_folder = $the_base_folder . $the_sufx_folder . '/';
        $the_copy_folder = $the_base_folder . 'folder2';
        $the_move_folder = $the_base_folder . 'FOLDER3';
        $the_extra_folder = $the_folder . 'extra/';
        $the_file = $the_folder . $the_base_file;
        //--
        $get_folder = SmartFileSysUtils::add_dir_last_slash(SmartFileSysUtils::get_dir_from_path($the_folder));
        $get_file = SmartFileSysUtils::get_file_name_from_path($the_file);
        $get_xfile = SmartFileSysUtils::get_noext_file_name_from_path($the_file);
        $get_ext = SmartFileSysUtils::get_file_extension_from_path($the_file);
        //--
        $the_copy_file = $the_file . '.copy.txt';
        $the_move_file = $the_extra_folder . $the_base_file . '.copy.moved.txt';
        $the_broken_link = $the_extra_folder . 'a-broken-link';
        $the_broken_dir_link = $the_extra_folder . 'a-broken-dir-link';
        $the_good_link = $the_extra_folder . 'a-good-link';
        $the_good_dir_link = $the_extra_folder . 'a-good-dir-link';
        //--
        //--
        $tests[] = 'INITIAL-FOLDER: ' . $get_folder;
        $tests[] = 'NEW-FOLDER: ' . $the_folder;
        $tests[] = 'NEW-FILE: ' . $the_file;
        //--
        //--
        if ((string) $err == '') {
            $the_test = 'CHECK TEST SAFE PATH NAME: DIR / FILE ...';
            $tests[] = $the_test;
            if ((string) Smart::safe_pathname((string) $get_folder) !== (string) $get_folder or (string) Smart::safe_pathname((string) $the_copy_file) !== (string) $the_copy_file) {
                $err = 'ERROR: SAFE PATH NAME TEST ... FAILED !!!';
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'CHECK TEST ABSOLUTE / BACKWARD PATHS ...';
            $tests[] = $the_test;
            if (!SmartFileSysUtils::check_file_or_dir_name('/this/is/absolute', 'no') or SmartFileSysUtils::check_file_or_dir_name('/this/is/absolute') or SmartFileSysUtils::check_file_or_dir_name('/this/is/../backward/path')) {
                $err = 'ERROR: CHECK TEST ABSOLUTE / BACKWARD PATHS ... FAILED !!!';
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'CHECK EXTRACT FOLDER FROM PATH ...';
            $tests[] = $the_test;
            if ((string) $get_folder != SmartFileSysUtils::add_dir_last_slash(Smart::dir_name($the_folder))) {
                $err = 'ERROR: Path Extraction FAILED: Dir=' . $get_folder . ' ; DirName=' . SmartFileSysUtils::add_dir_last_slash(Smart::dir_name($the_folder));
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'CHECK EXTRACT FILE AND EXTENSION FROM PATH (1) ...';
            $tests[] = $the_test;
            if ((string) $get_folder . SmartFileSysUtils::add_dir_last_slash($the_sufx_folder) . $get_file != $the_file) {
                $err = 'ERROR :: Path Extraction FAILED: Re-Composed-File=' . $get_folder . SmartFileSysUtils::add_dir_last_slash($the_sufx_folder) . $get_file . ' ; File=' . $the_file;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'CHECK EXTRACT FILE AND EXTENSION FROM PATH (2) ...';
            $tests[] = $the_test;
            if ((string) $get_file != $get_xfile . '.' . $get_ext) {
                $err = 'ERROR :: Path Extraction FAILED: File=' . $get_file . ' ; XFile=' . $get_xfile . ' ; Ext=' . $get_ext;
            }
            //end if
        }
        //end if
        //--
        SmartFileSysUtils::raise_error_if_unsafe_path($the_folder);
        if ((string) $err == '') {
            $the_test = 'CHECK PATH NAME DIR: check_file_or_dir_name() : ' . $the_folder;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSysUtils::check_file_or_dir_name($the_folder);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        SmartFileSysUtils::raise_error_if_unsafe_path($the_file);
        if ((string) $err == '') {
            $the_test = 'CHECK PATH NAME FILE: check_file_or_dir_name() : ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSysUtils::check_file_or_dir_name($the_file);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        //--
        if ((string) $err == '') {
            $parent_folder = SmartFileSysUtils::add_dir_last_slash('');
            $the_test = 'Check Add Dir Last (trailing) Slash: Empty Folder Name';
            $tests[] = $the_test;
            if ((string) $parent_folder != './') {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $parent_folder = SmartFileSysUtils::add_dir_last_slash('.');
            $the_test = 'Check Add Dir Last (trailing) Slash: Dot Folder Name: ' . $parent_folder;
            $tests[] = $the_test;
            if ((string) $parent_folder != './') {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $parent_folder = SmartFileSysUtils::add_dir_last_slash('./');
            $the_test = 'Check Add Dir Last (trailing) Slash: DotSlash Folder Name: ' . $parent_folder;
            $tests[] = $the_test;
            if ((string) $parent_folder != './') {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $parent_folder = SmartFileSysUtils::add_dir_last_slash(Smart::dir_name($the_base_folder));
            $the_test = 'Check Parent Dir Name with Add Dir Last (trailing) Slash: ' . $parent_folder . ' # from: ' . $the_base_folder;
            $tests[] = $the_test;
            if ((string) $parent_folder != 'tmp/') {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        //--
        if ((string) $err == '') {
            if (is_dir($get_folder)) {
                $the_test = 'DIR DELETE - INIT CLEANUP: dir_delete() + recursive: ' . $get_folder;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::dir_delete($the_base_folder, true);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            } else {
                $tests[] = 'DIR DELETE - INIT CLEANUP: Test Not Run (folder does not exists): ' . $get_folder;
            }
            //end if else
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'DIR CREATE RECURSIVE: dir_recursive_create() : ' . $the_folder . $long_prefixed . $short_prefixed;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::dir_recursive_create($the_folder . $long_prefixed . $short_prefixed);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'DIR CREATE NON-RECURSIVE: dir_create() : extra/ in : ' . $the_extra_folder;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::dir_recursive_create($the_extra_folder);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) DIRECTORY_SEPARATOR != '\\') {
            // broken links do not work on Windows !
            if ((string) $err == '') {
                $the_test = 'CREATE BROKEN FILE LINK FOR DELETION (1): link_create() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create('tmp/cache', $the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'DELETE BROKEN FILE LINK (1): delete() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::delete($the_broken_link);
                if ($result !== 1 || is_link($the_broken_link)) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'CREATE BROKEN FILE LINK FOR DELETION (2): link_create() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create('tmp/index.html', $the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'DELETE BROKEN FILE LINK (2): dir_delete() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::dir_delete($the_broken_link);
                if ($result !== 1 || is_link($the_broken_link)) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'CREATE BROKEN FILE LINK: link_create() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create('tmp/index.html', $the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'CREATE BROKEN DIR LINK: link_create() : as : ' . $the_broken_dir_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create('tmp/', $the_broken_dir_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'CREATE A FILE LINK: link_create() : as : ' . $the_good_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create(Smart::real_path('tmp/index.html'), $the_good_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'CREATE A DIR LINK: link_create() : as : ' . $the_good_dir_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create(Smart::real_path('tmp/'), $the_good_dir_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'FILE WRITE with empty content: write() : ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::write($the_file, '');
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE WRITE: write() / before append : ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::write($the_file, $test_string);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE WRITE: write() +append : ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::write($the_file, $test_string, 'a');
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE READ / Append: read() Full Size: ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::read($the_file);
            if ((string) SmartHashCrypto::sha512($result) != (string) SmartHashCrypto::sha512($test_string . $test_string)) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE WRITE: re-write() : ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::write($the_file, $test_string);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) DIRECTORY_SEPARATOR != '\\') {
            // broken links do not work on Windows !
            if ((string) $err == '') {
                $the_test = 'FILE WRITE TO A BROKEN LINK: write() : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::write($the_broken_link, $test_string);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'DELETE THE BROKEN LINK AFTER write() and RE-CREATE IT : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::delete($the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'RE-CREATE BROKEN FILE LINK [AFTER WRITE]: link_create() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create('tmp/index.html', $the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'FILE WRITE: write_if_not_exists() with Content Compare to a broken link : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::write_if_not_exists($the_broken_link, $test_string, 'yes');
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'DELETE THE BROKEN LINK AFTER write_if_not_exists() and RE-CREATE IT : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::delete($the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
            if ((string) $err == '') {
                $the_test = 'RE-CREATE BROKEN FILE LINK [AFTER WRITE-IF-NOT-EXISTS]: link_create() : as : ' . $the_broken_link;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::link_create('tmp/index.html', $the_broken_link);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'FILE WRITE: write_if_not_exists() without Content Compare : ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::write_if_not_exists($the_file, $test_string, 'no');
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'FILE READ: read() Full Size: ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::read($the_file);
            if ((string) SmartHashCrypto::sha512($result) != (string) $test_str_cksum) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE READ: read() Partial Size, First 10 bytes: ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::read($the_file, 10);
            if ((string) sha1($result) != (string) sha1(substr($test_string, 0, 10))) {
                // here we read bytes so substr() not SmartUnicode::sub_str() should be used
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'FILE STATIC-READ: staticread() Full Size: ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::staticread($the_file);
            if ((string) SmartHashCrypto::sha512($result) != (string) $test_str_cksum) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE STATIC-READ: staticread() Partial Size, First 10 bytes: ' . $the_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::staticread($the_file, 10);
            if ((string) sha1($result) != (string) sha1(substr($test_string, 0, 10))) {
                // here we read bytes so substr() not SmartUnicode::sub_str() should be used
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'FILE COPY: copy() : ' . $the_file . ' to: ' . $the_copy_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::copy($the_file, $the_copy_file);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE COPY with OVERWRITE: copy() : ' . $the_file . ' to: ' . $the_copy_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::copy($the_file, $the_copy_file, true);
            // overwrite destination file(s)
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE RE-COPY (test should re-write the destination): copy() : ' . $the_file . ' to: ' . $the_move_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::copy($the_file, $the_move_file);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            } else {
                $the_test = 'FILE DELETE: delete() : ' . $the_move_file;
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::delete($the_move_file);
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'FILE RENAME/MOVE: rename() : ' . $the_copy_file . ' to: ' . $the_move_file;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::rename($the_copy_file, $the_move_file);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            if (is_dir('__development/')) {
                //--
                $the_test = 'RECURSIVE COPY (CLONE) DIR [DEVELOPMENT]: dir_copy() : ' . '__development/' . ' to: ' . $the_folder . '__development';
                $tests[] = $the_test;
                $result = 0;
                $result = SmartFileSystem::dir_copy('__development/', $the_folder . '__development');
                if ($result !== 1) {
                    $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
                }
                //end if
                //--
                if ((string) $err == '') {
                    $the_test = 'DIR COMPARE THE [DEVELOPMENT] SOURCE WITH [DEVELOPMENT] DESTINATION AFTER DIR COPY AND DIR MOVE:' . "\n" . 'compare_folders() : ' . '__development/' . ' with: ' . $the_folder . '__development/';
                    $tests[] = $the_test;
                    $arr_diff = array();
                    $arr_diff = SmartFileSystem::compare_folders('__development', $the_folder . '__development', true, true);
                    if (Smart::array_size($arr_diff) > 0) {
                        $err = 'ERROR :: ' . $the_test . ' #DIFFERENCES=' . print_r($arr_diff, 1);
                    }
                    //end if
                }
                //end if
                //--
            } else {
                $tests[] = 'RECURSIVE COPY (CLONE) DIR [DEVELOPMENT]: Test Not Run (Development environment not detected) ...';
            }
            //end if else
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'RECURSIVE COPY (CLONE) DIR: dir_copy() : ' . $the_folder . ' to: ' . $the_copy_folder;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::dir_copy($the_folder, $the_copy_folder);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'MOVE/RENAME DIR: dir_rename() : ' . $the_copy_folder . ' to: ' . $the_move_folder;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::dir_rename($the_copy_folder, $the_move_folder);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'DIR COMPARE THE SOURCE WITH DESTINATION AFTER DIR COPY AND DIR MOVE: ' . $the_folder . ' with: ' . $the_move_folder;
            $tests[] = $the_test;
            $arr_diff = array();
            $arr_diff = SmartFileSystem::compare_folders($the_folder, $the_move_folder, true, true);
            if (Smart::array_size($arr_diff) > 0) {
                $err = 'ERROR :: ' . $the_test . ' #DIFFERENCES=' . print_r($arr_diff, 1);
            }
            //end if
        }
        //end if
        //--
        if ((string) $err == '') {
            $the_test = 'DIR DELETE - SIMPLE: dir_delete() non-recursive: ' . $the_extra_folder;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::dir_delete($the_extra_folder, false);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        if ((string) $err == '') {
            $the_test = 'DIR DELETE - LAST CLEANUP: dir_delete() + recursive: ' . $get_folder;
            $tests[] = $the_test;
            $result = 0;
            $result = SmartFileSystem::dir_delete($the_base_folder, true);
            if ($result !== 1) {
                $err = 'ERROR :: ' . $the_test . ' #RESULT=' . $result;
            }
            //end if
        }
        //end if
        //--
        //--
        $time = 'TOTAL TIME was: ' . (microtime(true) - $time);
        //--
        //--
        $end_tests = '##### END TESTS ... ' . $time . ' sec. #####';
        //--
        //--
        if ((string) $err == '') {
            $img_sign = 'lib/core/img/sign_info.png';
            $img_check = 'lib/core/img/q_completed.png';
            $text_main = Smart::escape_js('<span style="color:#83B953;">Good ... Perfect &nbsp;&nbsp;&nbsp; :: &nbsp;&nbsp;&nbsp; グッド ... パーフェクト</span>');
            $text_info = Smart::escape_js('<h2><span style="color:#83B953;">All</span> the SmartFramework FS Operations <span style="color:#83B953;">Tests PASSED on PHP</span><hr></h2><span style="font-size:14px;">' . Smart::nl_2_br(Smart::escape_html(implode("\n" . '* ', $tests) . "\n" . $end_tests)) . '</span>');
        } else {
            $img_sign = 'lib/core/img/sign_error.png';
            $img_check = 'lib/core/img/q_warning.png';
            $text_main = Smart::escape_js('<span style="color:#FF5500;">An ERROR occured ... &nbsp;&nbsp;&nbsp; :: &nbsp;&nbsp;&nbsp; エラーが発生しました ...</span>');
            $text_info = Smart::escape_js('<h2><span style="color:#FF5500;">A test FAILED</span> when testing FS Operations.<span style="color:#FF5500;"><hr>FAILED Test Details</span>:</h2><br><h3>' . Smart::escape_html($tests[Smart::array_size($tests) - 1]) . '</h3><br><span style="font-size:14px;"><pre>' . Smart::escape_html($err) . '</pre></span>');
        }
        //end if else
        //--
        //--
        $html = <<<HTML
<h1>SmartFramework LibFileSystem Tests: DONE ... [ Time: {$time} sec. ]</h1>
<script type="text/javascript">
\tSmartJS_BrowserUtils.alert_Dialog(
\t\t'<img src="{$img_sign}" align="right"><h1>{$text_main}</h1><hr><span style="color:#333333;"><img src="{$img_check}" align="right">{$text_info}<br>',
\t\t'',
\t\t'FileSystem Operations Test Suite for SmartFramework: PHP',
\t\t'920',
\t\t'480'
\t);
</script>
HTML;
        //--
        //--
        return $html;
        //--
    }
 public static function Create_Required_Dirs()
 {
     //--
     if (!defined('SMART_FRAMEWORK_VERSION')) {
         die('Smart Runtime // Create Required Dirs :: Requires SmartFramework to be loaded ...');
     }
     //end if
     //--
     if (self::$RequiredDirsCreated !== false) {
         return;
         // avoid run after it was used by runtime
     }
     //end if
     self::$RequiredDirsCreated = true;
     //--
     @clearstatcache();
     //-- tmp dir
     $dir = 'tmp/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
         SmartFileSystem::write($dir . '.htaccess', trim((string) SMART_FRAMEWORK_HTACCESS_NOINDEXING) . "\n" . trim((string) SMART_FRAMEWORK_HTACCESS_NOEXECUTION) . "\n" . trim((string) SMART_FRAMEWORK_HTACCESS_FORBIDDEN) . "\n");
     } else {
         // manage debug cleanup
         if ((string) SMART_FRAMEWORK_DEBUG_MODE != 'yes') {
             if (is_file('tmp/SMART-FRAMEWORK__DEBUG-ON')) {
                 if (is_dir('tmp/logs/idx/')) {
                     SmartFileSystem::dir_delete('tmp/logs/idx/', true);
                 }
                 //end if
                 if (is_dir('tmp/logs/adm/')) {
                     SmartFileSystem::dir_delete('tmp/logs/adm/', true);
                 }
                 //end if
                 SmartFileSystem::delete('tmp/SMART-FRAMEWORK__DEBUG-ON');
             }
             //end if
         } else {
             SmartFileSystem::write_if_not_exists('tmp/SMART-FRAMEWORK__DEBUG-ON', 'DEBUG:ON');
         }
         //end if else
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (Temporary Folder is Not Writable)');
         die;
     }
     //end if
     if (!is_file($dir . '.htaccess')) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'The .htaccess file is missing on FileSystem #TMP: ' . $dir . '.htaccess', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- tmp locks dir
     $dir = 'tmp/locks/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- tmp cache dir
     $dir = 'tmp/cache/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- tmp logs dir
     $dir = 'tmp/logs/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (Error Log Folder is Not Writable)');
         die;
     }
     //end if
     //-- tmp logs/admin dir
     $dir = 'tmp/logs/adm/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- tmp logs/idx dir
     $dir = 'tmp/logs/idx/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- tmp sessions dir
     $dir = 'tmp/sessions/';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- wpub dir
     $dir = 'wpub/';
     // {{{SYNC-WPUB-DIR}}}
     $ctrlfile = $dir . '#wpub';
     $htfile = $dir . '.htaccess';
     $robotsfile = $dir . 'robots.txt';
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
         SmartFileSystem::write($robotsfile, 'User-agent: *' . "\n" . 'Disallow: *');
         // avoid robots to index it
         SmartFileSystem::write($ctrlfile, 'FileName: #wpub (#WEB-PUBLIC)' . "\n" . 'Created by: App-Runtime' . "\n" . date('Y-m-d H:i:s O'));
         SmartFileSystem::write($htfile, trim((string) SMART_FRAMEWORK_HTACCESS_NOEXECUTION) . "\n");
         // trim((string)SMART_FRAMEWORK_HTACCESS_NOINDEXING)."\n".
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: #WEB-PUBLIC Folder: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     if (!is_file($ctrlfile)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'Cannot Connect to FileSystem #WEB-PUBLIC: ' . $ctrlfile, 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     if (!is_file($htfile)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'The .htaccess file is missing on FileSystem #WEB-PUBLIC: ' . $htfile, 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //-- wpub/webapps-content
     $dir = 'wpub/webapps-content/';
     // {{{SYNC-WEBAPPS-DIR}}}
     if (!is_dir($dir)) {
         SmartFileSystem::dir_create($dir);
         SmartFileSystem::write($dir . 'index.html', '');
     }
     // end if
     if (!is_writable($dir)) {
         Smart::raise_error('#SMART-FRAMEWORK-CREATE-REQUIRED-DIRS#' . "\n" . 'General ERROR :: \'' . $dir . '\' is NOT writable !', 'App Init ERROR :: (See Error Log for More Details)');
         die;
     }
     //end if
     //--
 }
 /**
  * Generate a PDF Document on the fly from a piece of HTML code.
  *
  * Notice: this is using a secured cache folder, unique per visitor ID
  *
  * @param STRING $y_html_content				:: The HTML Code
  * @param ENUM $y_orientation					:: Page Orientation: 'normal' | 'wide'
  * @param STRING $y_runtime_script 				:: The allowed Runtime Script to allow send credentials for sub-downloads. Ex: admin.php
  * @param STRING $y_runtime_url					:: The allowed Runtime URL ended by '/' to allow send credentials for sub-downloads. Ex: http(s)://some-server/some_path/ ; normally this should be set in config to enforce https:// and a single URL only
  * @param BOOLEAN $y_allow_send_credentials 	:: Set to TRUE to allow or set to FALSE to dissalow sending the auth credentials for sub-downloads: in the case there are embedded pictures generated by admin.php which may need authentication before to work, the credentials need to be set automatically in this case
  *
  * @returns STRING 							:: The PDF Document Contents
  *
  */
 public static function generate($y_html_content, $y_orientation = 'normal', $y_runtime_script = '', $y_runtime_url = '', $y_allow_send_credentials = false)
 {
     //--
     $pdfdata = '';
     //--
     $htmldoc = self::is_active();
     //--
     if ((string) $htmldoc != '') {
         //--
         if ((string) $y_orientation == 'wide') {
             $orientation = self::tag_page_wide();
         } else {
             $orientation = self::tag_page_normal();
         }
         //end if else
         //--
         $tmp_prefix_dir = 'tmp/cache/pdf/';
         $protect_file = $tmp_prefix_dir . '.htaccess';
         $dir = $tmp_prefix_dir . SMART_FRAMEWORK_SESSION_PREFIX . '/';
         // we use different for index / admin / @
         //--
         $uniquifier = SmartUtils::unique_auth_client_private_key() . SMART_APP_VISITOR_COOKIE;
         $the_dir = $dir . Smart::safe_varname(Smart::uuid_10_seq() . '_' . Smart::uuid_10_num() . '_' . SmartHashCrypto::sha1($uniquifier)) . '/';
         //--
         $tmp_uuid = Smart::uuid_45($uniquifier) . Smart::uuid_36($uniquifier);
         $file = $the_dir . '__document_' . SmartHashCrypto::sha256('@@PDF#File::Cache@@' . $tmp_uuid) . '.html';
         $logfile = $the_dir . '__headers_' . SmartHashCrypto::sha256('@@PDF#File::Cache@@' . $tmp_uuid) . '.log';
         //--
         if (is_dir($the_dir)) {
             SmartFileSystem::dir_delete($the_dir);
         }
         //end if
         //--
         if (!is_dir($the_dir)) {
             SmartFileSystem::dir_recursive_create($the_dir);
         }
         // end if
         //--
         SmartFileSystem::write_if_not_exists($protect_file, trim(SMART_FRAMEWORK_HTACCESS_FORBIDDEN) . "\n", 'yes');
         //-- process the code
         $y_html_content = (string) self::remove_between_tags((string) $y_html_content);
         $y_html_content = (string) self::safe_charset((string) $y_html_content);
         //-- extract images
         $htmlparser = new SmartHtmlParser((string) $y_html_content);
         $arr_imgs = $htmlparser->get_tags('img');
         $htmlparser = '';
         unset($htmlparser);
         //--
         $chk_duplicates_arr = array();
         //--
         for ($i = 0; $i < Smart::array_size($arr_imgs); $i++) {
             //--
             $tmp_img_src = trim((string) $arr_imgs[$i]['src']);
             //--
             if (strlen($chk_duplicates_arr[$tmp_img_src]) <= 0) {
                 //--
                 $tmp_url_img_src = '';
                 //--
                 if ((string) $y_runtime_script != '' and (string) $y_runtime_url != '') {
                     // replace relative paths
                     if (substr($tmp_img_src, 0, @strlen($y_runtime_script)) == (string) $y_runtime_script) {
                         $tmp_url_img_src = (string) $y_runtime_url . $tmp_img_src;
                         $y_html_content = (string) @str_replace('src="' . $tmp_img_src . '"', 'src="' . $tmp_url_img_src . '"', (string) $y_html_content);
                         $tmp_img_src = (string) $tmp_url_img_src;
                     }
                     //end if
                 }
                 //end if
                 //--
                 $tmp_img_ext = '.' . strtolower(SmartFileSysUtils::get_file_extension_from_path($tmp_img_src));
                 // [OK]
                 $tmp_img_cache = 'pdf_img_' . SmartHashCrypto::sha256('@@PDF#File::Cache::IMG@@' . '#' . $i . '@' . $tmp_img_src . '//' . $tmp_uuid);
                 //--
                 $tmp_arr = array();
                 //--
                 if (substr($tmp_img_src, 0, 7) == 'http://' or substr($tmp_img_src, 0, 8) == 'https://') {
                     //--
                     $tmp_img_ext = '';
                     // we clear the extension as we don't know yet (we will get it from headers)
                     $tmp_img_cache = 'pdf_url_img_' . SmartHashCrypto::sha256('@@PDF#File::Cache::URL::IMG@@' . '#' . $i . '@' . $tmp_img_src . '//' . $tmp_uuid);
                     //--
                 }
                 //end if
                 //--
                 if ($y_allow_send_credentials === true) {
                     $allow_set_credentials = 'yes';
                 } else {
                     $allow_set_credentials = 'no';
                 }
                 //end if else
                 //--
                 $tmp_arr = SmartUtils::load_url_or_file($tmp_img_src, SMART_FRAMEWORK_NETSOCKET_TIMEOUT, 'GET', '', '', '', $allow_set_credentials);
                 // [OK] :: allow set credentials
                 //--
                 $tmp_img_ext = '.noextension';
                 $tmp_where_we_guess = '';
                 //--
                 $guess_arr = array();
                 //--
                 $guess_arr = SmartUtils::guess_image_extension_by_url_head($tmp_arr['headers']);
                 $tmp_img_ext = (string) $guess_arr['extension'];
                 $tmp_where_we_guess = (string) $guess_arr['where-was-detected'];
                 $guess_arr = array();
                 if ((string) $tmp_img_ext == '') {
                     $tmp_img_ext = SmartUtils::guess_image_extension_by_first_bytes(substr($tmp_arr['content'], 0, 256));
                     if ((string) $tmp_img_ext != '') {
                         $tmp_where_we_guess = ' First Bytes ...';
                     }
                     //end if
                 }
                 //end if
                 //--
                 if ((string) SMART_FRAMEWORK_DEBUG_MODE == 'yes') {
                     // if debug, append information to log
                     SmartFileSystem::write($logfile, '####################' . "\n" . '#################### [FILE # ' . $i . ' = \'' . $tmp_img_src . '\']' . "\n\n" . '==== [MODE] :: ' . $tmp_arr['mode'] . "\n" . '==== [LOG] :: ' . "\n" . $tmp_arr['log'] . "\n" . '==== [HEADERS] ::' . "\n" . $tmp_arr['headers'] . "\n" . '########' . "\n" . '==== [GUESS EXTENSION] :: ' . $tmp_where_we_guess . "\n\n" . '###################' . "\n\n\n\n", 'a');
                 }
                 //end if
                 //--
                 if ((string) $tmp_arr['result'] == '1' and (string) $tmp_arr['code'] == '200') {
                     //--
                     SmartFileSystem::write($the_dir . $tmp_img_cache . $tmp_img_ext, $tmp_arr['content']);
                     //-- if empty, it may be a file
                     if ((string) $tmp_img_ext == '' or (string) $tmp_img_ext == '.png' or (string) $tmp_img_ext == '.gif' or (string) $tmp_img_ext == '.jpg') {
                         $y_html_content = (string) @str_replace('src="' . $tmp_img_src . '"', 'src="' . $tmp_img_cache . $tmp_img_ext . '"', (string) $y_html_content);
                     } else {
                         // we want to avoid html code to be loaded as image by mistakes of http browser class or servers
                         $y_html_content = (string) @str_replace('src="' . $tmp_img_src . '"', 'src="' . $y_runtime_url . 'lib/framework/img/sign_warn.png"', (string) $y_html_content);
                     }
                     //end if else
                     //--
                 } else {
                     //--
                     $y_html_content = (string) @str_replace('src="' . $tmp_img_src . '"', 'src="' . $y_runtime_url . 'lib/framework/img/sign_error.png"', (string) $y_html_content);
                     //--
                 }
                 //end if
                 //--
             }
             //end if
             //--
             $chk_duplicates_arr[$tmp_img_src] = 'processed';
             //--
         }
         //end for
         //--
         $chk_duplicates_arr = array();
         unset($chk_duplicates_arr);
         $arr_imgs = array();
         unset($arr_imgs);
         //--
         SmartFileSystem::write($file, $orientation . "\n" . $y_html_content);
         //--
         if (is_file($file)) {
             //--
             ob_start();
             //--
             @passthru($htmldoc . ' ' . self::pdf_options($file));
             //--
             $pdfdata = ob_get_clean();
             //--
         } else {
             //--
             Smart::log_warning('ERROR: PDF Generator Failed to find the PDF Document: ' . $file . "\n" . $y_html_content);
             //--
         }
         //end if else
         //-- cleanup
         if ((string) SMART_FRAMEWORK_DEBUG_MODE != 'yes') {
             // if not debug, cleanup the dir
             if (is_dir($the_dir)) {
                 SmartFileSystem::dir_delete($the_dir);
             }
             //end if
         }
         //end if
         //--
     } else {
         //--
         Smart::log_notice('NOTICE: PDF Generator is INACTIVE ...');
         //--
     }
     //end if
     //--
     return (string) $pdfdata;
     //--
 }