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Annotation of 43BSDTahoe/new/xns/courierlib/Filing5.cr, revision 1.1

1.1     ! root        1: -- $Header: Filing5.cr,v 2.6 87/03/23 13:06:20 ed Exp $
        !             2: 
        !             3: -- Note:  this is a TEST version of Filing, and is not guaranteed to
        !             4: -- match the official Xerox version at all.  It does seem to be adequate
        !             5: -- for FTP, however.
        !             6: 
        !             7: -- $Log:       Filing5.cr,v $
        !             8: -- Revision 2.6  87/03/23  13:06:20  ed
        !             9: -- Minor Type in SerializedTree.
        !            10: -- 
        !            11: -- Revision 2.5  87/03/23  11:48:42  ed
        !            12: -- Slight mod to SerializedTree to allow current implementation.
        !            13: -- 
        !            14: -- Revision 2.4  87/01/14  13:02:00  ed
        !            15: -- Remove controls from Move
        !            16: --
        !            17: -- Revision 2.3  86/12/31  11:45:30  ed
        !            18: -- Added RandomAccess and Serialize/Deserialize for completeness
        !            19: -- Some REPORTS error typos fixed
        !            20: --
        !            21: -- Revision 2.2  86/06/30  11:31:13  jqj
        !            22: -- convert to Authentication v 2 for compatibility with spec., now that
        !            23: -- compiler allows it.
        !            24: -- 
        !            25: -- Revision 2.1  86/06/02  07:08:22  jqj
        !            26: -- typos
        !            27: -- 
        !            28: -- Revision 2.0  85/11/21  07:22:38  jqj
        !            29: -- 4.3BSD standard release
        !            30: -- 
        !            31: -- Revision 1.1  85/05/27  06:30:46  jqj
        !            32: -- Initial revision
        !            33: -- 
        !            34: -- Revision 1.1  85/05/27  06:30:46  jqj
        !            35: -- Initial revision
        !            36: -- 
        !            37: 
        !            38: Filing: PROGRAM 10 VERSION 5 =
        !            39: BEGIN
        !            40:        DEPENDS UPON
        !            41:                BulkData(0) VERSION 1,
        !            42:                Clearinghouse(2) VERSION 2,
        !            43:                Authentication(14) VERSION 2,
        !            44:                Time(15) VERSION 2;
        !            45: 
        !            46: 
        !            47: 
        !            48: 
        !            49: -- TYPES AND CONSTANTS --
        !            50: 
        !            51: -- Attributes (individual attributes defined later) --
        !            52: 
        !            53: AttributeType: TYPE = LONG CARDINAL;
        !            54: AttributeTypeSequence: TYPE = SEQUENCE OF AttributeType;
        !            55: allAttributeTypes: AttributeTypeSequence = [37777777777B];
        !            56: Attribute: TYPE = RECORD [type: AttributeType, value: SEQUENCE OF UNSPECIFIED];
        !            57: AttributeSequence: TYPE = SEQUENCE OF Attribute;
        !            58: 
        !            59: -- Controls --
        !            60: 
        !            61: ControlType: TYPE = {lockControl(0), timeoutControl(1), accessControl(2)};
        !            62: ControlTypeSequence: TYPE = SEQUENCE 3 OF ControlType;
        !            63: 
        !            64: Lock: TYPE = {lockNone(0), share(1), exclusive(2)};
        !            65: 
        !            66: Timeout: TYPE = CARDINAL;      -- in seconds --
        !            67: defaultTimeout: Timeout = 177777B;     -- actual value impl.-dependent --
        !            68: 
        !            69: AccessType: TYPE = {
        !            70:        readAccess(0), writeAccess(1), ownerAccess(2),  -- all files --
        !            71:        addAccess(3), removeAccess(4) };                -- directories only --
        !            72: AccessSequence: TYPE = SEQUENCE 5 OF AccessType;
        !            73: -- fullAccess: AccessSequence = [177777B]; --
        !            74: 
        !            75: Control: TYPE = CHOICE ControlType OF {
        !            76:        lockControl => Lock,
        !            77:        timeoutControl => Timeout,
        !            78:        accessControl => AccessSequence};
        !            79: ControlSequence: TYPE = SEQUENCE 3 OF Control;
        !            80: 
        !            81: -- Scopes --
        !            82: 
        !            83: Count: TYPE = CARDINAL;
        !            84: unlimitedCount: Count = 177777B;
        !            85: 
        !            86: Depth: TYPE = CARDINAL;
        !            87: allDescendants: Depth = 177777B;
        !            88: 
        !            89: Direction: TYPE = {forward(0), backward(1)};
        !            90: 
        !            91: Interpretation: TYPE = { interpretationNone(0), boolean(1), cardinal(2),
        !            92:        longCardinal(3), time(4), integer(5), longInteger(6), string(7) };
        !            93: FilterType: TYPE = {
        !            94:        -- relations --
        !            95:        less(0), lessOrEqual(1), equal(2), notEqual(3), greaterOrEqual(4),
        !            96:        greater(5), 
        !            97:        -- logical --
        !            98:        and(6), or(7), not(8),
        !            99:        -- constants --
        !           100:        filterNone(9), all(10),
        !           101:        -- patterns --
        !           102:        matches(11) };
        !           103: RestrictedFilter: TYPE = CHOICE FilterType OF {
        !           104:        less, lessOrEqual, equal, notEqual, greaterOrEqual, greater =>
        !           105:                RECORD [attribute: Attribute, interpretation: Interpretation],
        !           106:                -- interpretation ignored if attribute interpreted by
        !           107:                -- implementor
        !           108:        -- NOT IMPLEMENTED: and, or, not --
        !           109:        filterNone, all => RECORD [],
        !           110:        matches => RECORD [attribute: Attribute] };
        !           111: Filter: TYPE = CHOICE FilterType OF {
        !           112:        less, lessOrEqual, equal, notEqual, greaterOrEqual, greater =>
        !           113:                RECORD [attribute: Attribute, interpretation: Interpretation],
        !           114:                -- interpretation ignored if attribute interpreted by
        !           115:                -- implementor
        !           116:        -- NOT YET IMPLEMENTED: (at least, not generally) and, or, not --
        !           117:        and, or => SEQUENCE OF RestrictedFilter,
        !           118:        not => RestrictedFilter,
        !           119:        filterNone, all => RECORD [],
        !           120:        matches => RECORD [attribute: Attribute] };
        !           121: nullFilter: Filter = all[];
        !           122:        
        !           123: ScopeType: TYPE = { count(0), direction(1), filter(2), depth(3) };
        !           124: Scope: TYPE = CHOICE ScopeType OF {
        !           125:        count => Count,
        !           126:        depth => Depth,
        !           127:        direction => Direction,
        !           128:        filter => Filter };
        !           129: ScopeSequence: TYPE = SEQUENCE 4 OF Scope;
        !           130: 
        !           131: -- Handles and Authentication --
        !           132: 
        !           133: Credentials: TYPE = Authentication.Credentials;
        !           134: Verifier: TYPE = Authentication.Verifier;
        !           135: SimpleVerifier: TYPE = Authentication.SimpleVerifier;
        !           136: 
        !           137: Handle: TYPE = ARRAY 2 OF UNSPECIFIED;
        !           138: nullHandle: Handle = [0,0];
        !           139: 
        !           140: Session: TYPE = RECORD [token: ARRAY 2 OF UNSPECIFIED, verifier: Verifier ];
        !           141: 
        !           142: 
        !           143: -- Random Access --
        !           144: 
        !           145: ByteAddress: TYPE = LONG CARDINAL;
        !           146: ByteCount: TYPE = LONG CARDINAL;
        !           147: endOfFile: LONG CARDINAL = 3777777777B; -- logical end of file --
        !           148: 
        !           149: ByteRange: TYPE = RECORD [ firstByte: ByteAddress, count: ByteCount ];
        !           150: 
        !           151: 
        !           152: -- REMOTE ERRORS --
        !           153: 
        !           154: ArgumentProblem: TYPE = {
        !           155:        illegal(0),
        !           156:        disallowed(1),
        !           157:        unreasonable(2),
        !           158:        unimplemented(3),
        !           159:        duplicated(4),
        !           160:        missing(5) };
        !           161: 
        !           162: -- problem with an attribute type or value --
        !           163: AttributeTypeError: ERROR [ problem: ArgumentProblem, type: AttributeType]
        !           164:        = 0;
        !           165: AttributeValueError: ERROR [ problem: ArgumentProblem, type: AttributeType]
        !           166:        = 1;
        !           167: 
        !           168: -- problem with an control type or value --
        !           169: ControlTypeError: ERROR [ problem: ArgumentProblem, type: ControlType]
        !           170:        = 2;
        !           171: ControlValueError: ERROR [ problem: ArgumentProblem, type: ControlType]
        !           172:        = 3;
        !           173: 
        !           174: -- problem with an scope type or value --
        !           175: ScopeTypeError: ERROR [ problem: ArgumentProblem, type: ScopeType]
        !           176:        = 4;
        !           177: ScopeValueError: ERROR [ problem: ArgumentProblem, type: ScopeType]
        !           178:        = 5;
        !           179: 
        !           180: -- problem in obtaining access to a file --
        !           181: AccessProblem: TYPE = {
        !           182:        accessRightsInsufficient(0),
        !           183:        accessRightsIndeterminate(1),
        !           184:        fileChanged(2),
        !           185:        fileDamaged(3),
        !           186:        fileInUse(4),
        !           187:        fileNotFound(5),
        !           188:        fileOpen(6) };
        !           189: AccessError: ERROR [problem: AccessProblem] = 6;
        !           190: 
        !           191: -- problem with a credentials or verifier --
        !           192: AuthenticationError: ERROR [problem: Authentication.Problem] = 7;
        !           193: 
        !           194: -- problem with a BDT --
        !           195: ConnectionProblem: TYPE = {
        !           196:                -- communication problems --
        !           197:        noRoute(0),
        !           198:        noResponse(1),
        !           199:        transmissionHardware(2),
        !           200:        transportTimeout(3),
        !           201:                -- resource problems --
        !           202:        tooManyLocalConnections(4),
        !           203:        tooManyRemoteConnections(5),
        !           204:                -- remote program implementation problems --
        !           205:        missingCourier(6),
        !           206:        missingProgram(7),
        !           207:        missingProcedure(8),
        !           208:        protocolMismatch(9),
        !           209:        parameterInconsistency(10),
        !           210:        invalidMessage(11),
        !           211:        returnTimedOut(12),
        !           212:                -- miscellaneous --
        !           213:        otherCallProblem(177777B) };
        !           214: ConnectionError: ERROR [problem: ConnectionProblem] = 8;
        !           215: 
        !           216: -- problem with file handle --
        !           217: HandleProblem: TYPE = {
        !           218:        invalid(0),
        !           219:        nullDisallowed(1),
        !           220:        directoryRequired(2) };
        !           221: HandleError: ERROR [problem: HandleProblem] = 9;
        !           222: 
        !           223: -- problem during insertion in directory or changing attributes --
        !           224: InsertionProblem: TYPE = {
        !           225:        positionUnavailable(0),
        !           226:        fileNotUnique(1),
        !           227:        loopInHierarchy(2) };
        !           228: InsertionError: ERROR [problem: InsertionProblem] = 10;
        !           229: 
        !           230: -- problem during random access operation --
        !           231: RangeError: ERROR [problem: ArgumentProblem] = 16;
        !           232: 
        !           233: -- problem during logon or logoff --
        !           234: ServiceProblem: TYPE = {
        !           235:        cannotAuthenticate(0),
        !           236:        serviceFull(1),
        !           237:        serviceUnavailable(2),
        !           238:        sessionInUse(3) };
        !           239: ServiceError: ERROR [problem: ServiceProblem] = 11;
        !           240: 
        !           241: -- problem with a session --
        !           242: SessionProblem: TYPE = {
        !           243:        tokenInvalid(0),
        !           244:        serviceAlreadySet(1) };
        !           245: SessionError: ERROR [problem: SessionProblem ] = 12;
        !           246: 
        !           247: -- problem obtaining space for file contents or attributes --
        !           248: SpaceProblem: TYPE = {
        !           249:        allocationExceeded(0),
        !           250:        attributeAreaFull(1),
        !           251:        mediumFull(2) };
        !           252: SpaceError: ERROR [problem: SpaceProblem ] = 13;
        !           253: 
        !           254: -- problem during BDT --
        !           255: TransferProblem: TYPE = {
        !           256:        aborted(0),
        !           257:        checksumIncorrect(1),
        !           258:        formatIncorrect(2),
        !           259:        noRendezvous(3),
        !           260:        wrongDirection(4) };
        !           261: TransferError: ERROR [problem: TransferProblem ] = 14;
        !           262: 
        !           263: -- some undefined (and implementation-dependent) problem occurred --
        !           264: UndefinedProblem: TYPE = CARDINAL;
        !           265: UndefinedError: ERROR [problem: UndefinedProblem ] = 15;
        !           266: 
        !           267: 
        !           268: 
        !           269: 
        !           270: -- REMOTE PROCEDURES --
        !           271: 
        !           272: -- Logging On and Off --
        !           273: 
        !           274: Logon: PROCEDURE [
        !           275:        service: Clearinghouse.Name, credentials: Credentials,
        !           276:        verifier: Verifier ] 
        !           277:        RETURNS [ session: Session ]
        !           278:        REPORTS [ AuthenticationError, ServiceError, SessionError,
        !           279:                UndefinedError ]
        !           280:        = 0;
        !           281: 
        !           282: Logoff: PROCEDURE [ session: Session ]
        !           283:        REPORTS [ AuthenticationError, ServiceError, SessionError,
        !           284:                UndefinedError ]
        !           285:        = 1;
        !           286: 
        !           287: Continue: PROCEDURE [ session: Session ]
        !           288:        RETURNS [ continuance: CARDINAL ]
        !           289:        REPORTS [ AuthenticationError, SessionError, UndefinedError ]
        !           290:        = 19;
        !           291: 
        !           292: -- Opening and Closing Files --
        !           293: 
        !           294: Open: PROCEDURE [ attributes: AttributeSequence, directory: Handle,
        !           295:                controls: ControlSequence, session: Session ]
        !           296:        RETURNS [ file: Handle ]
        !           297:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           298:                AuthenticationError, ControlTypeError, ControlValueError,
        !           299:                HandleError, SessionError, UndefinedError ]
        !           300:        = 2;
        !           301: 
        !           302: Close: PROCEDURE [ file: Handle, session: Session ]
        !           303:        REPORTS [ AuthenticationError, HandleError, SessionError,
        !           304:                UndefinedError ] 
        !           305:        = 3;
        !           306: 
        !           307: -- Creating and Deleting Files --
        !           308: 
        !           309: Create: PROCEDURE [ directory: Handle, attributes: AttributeSequence,
        !           310:                controls: ControlSequence, session: Session ]
        !           311:        RETURNS [ file: Handle ]
        !           312:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           313:                AuthenticationError, ControlTypeError, ControlValueError,
        !           314:                HandleError, InsertionError, SessionError, SpaceError,
        !           315:                UndefinedError ]
        !           316:        = 4;
        !           317: 
        !           318: Delete: PROCEDURE [ file: Handle, session: Session ]
        !           319:        REPORTS [ AccessError, AuthenticationError, HandleError, SessionError,
        !           320:                UndefinedError ]
        !           321:        = 5;
        !           322: 
        !           323: -- Getting and Changing Controls (transient) --
        !           324: 
        !           325: GetControls: PROCEDURE [ file: Handle, types: ControlTypeSequence,
        !           326:                session: Session ]
        !           327:        RETURNS [ controls: ControlSequence ]
        !           328:        REPORTS [ AccessError, AuthenticationError, ControlTypeError,
        !           329:                HandleError, SessionError, UndefinedError ]
        !           330:        = 6;
        !           331: 
        !           332: ChangeControls: PROCEDURE [ file: Handle, controls: ControlSequence,
        !           333:                session: Session ]
        !           334:        REPORTS [ AccessError, AuthenticationError,
        !           335:                ControlTypeError, ControlValueError,
        !           336:                HandleError, SessionError, UndefinedError ]
        !           337:        = 7;
        !           338: 
        !           339: 
        !           340: -- Getting and Changing Attributes (permanent) --
        !           341: 
        !           342: GetAttributes: PROCEDURE [ file: Handle, types: AttributeTypeSequence,
        !           343:                session: Session ]
        !           344:        RETURNS [ attributes: AttributeSequence ]
        !           345:        REPORTS [ AccessError, AttributeTypeError, AuthenticationError,
        !           346:                HandleError, SessionError, UndefinedError ]
        !           347:        = 8;
        !           348: 
        !           349: ChangeAttributes: PROCEDURE [file: Handle, attributes: AttributeSequence,
        !           350:                session: Session ]
        !           351:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           352:                AuthenticationError, HandleError, InsertionError,
        !           353:                SessionError, SpaceError, UndefinedError ]
        !           354:        = 9;
        !           355: 
        !           356: UnifyAccessLists: PROCEDURE [directory: Handle, session: Session ]
        !           357:        REPORTS [ AccessError, AuthenticationError, HandleError, SessionError,
        !           358:                UndefinedError ] 
        !           359:        = 20;
        !           360: 
        !           361: -- Copying and Moving Files --
        !           362: 
        !           363: Copy: PROCEDURE [ file, destinationDirectory: Handle ,
        !           364:                attributes: AttributeSequence, controls: ControlSequence,
        !           365:                session: Session ]
        !           366:        RETURNS [ newFile: Handle ]
        !           367:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           368:                AuthenticationError, ControlTypeError, ControlValueError,
        !           369:                HandleError, InsertionError, SessionError, SpaceError,
        !           370:                UndefinedError ] 
        !           371:        = 10;
        !           372: 
        !           373: Move: PROCEDURE [ file, destinationDirectory: Handle ,
        !           374:                attributes: AttributeSequence, session: Session ]
        !           375:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           376:                AuthenticationError, HandleError, InsertionError,
        !           377:                SessionError, SpaceError, UndefinedError ] 
        !           378:        = 11;
        !           379: 
        !           380: -- Transfering Bulk Data (File Content) --
        !           381: 
        !           382: Store: PROCEDURE [ directory: Handle, attributes: AttributeSequence,
        !           383:                controls: ControlSequence, content: BulkData.Source,
        !           384:                session: Session ]
        !           385:        RETURNS [ file: Handle ]
        !           386:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           387:                AuthenticationError, ConnectionError, ControlTypeError,
        !           388:                ControlValueError, HandleError, InsertionError, SessionError,
        !           389:                SpaceError, TransferError, UndefinedError ]
        !           390:        = 12;
        !           391: 
        !           392: Retrieve: PROCEDURE [ file: Handle, content: BulkData.Sink, session: Session ]
        !           393:        REPORTS [ AccessError, AuthenticationError, ConnectionError,
        !           394:                HandleError, SessionError, TransferError,
        !           395:                UndefinedError ]
        !           396:        = 13;
        !           397: 
        !           398: Replace: PROCEDURE [ file: Handle,  attributes: AttributeSequence,
        !           399:                content: BulkData.Source, session: Session ]
        !           400:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           401:                AuthenticationError, ConnectionError, HandleError,
        !           402:                SessionError, SpaceError, TransferError, UndefinedError ]
        !           403:        = 14;
        !           404: 
        !           405: -- Transferring Bulk Data (Serialized Files) --
        !           406: 
        !           407: Serialize: PROCEDURE [ file: Handle, serializedFile: BulkData.Sink,
        !           408:                session: Session ]
        !           409:        REPORTS [ AccessError, AuthenticationError, ConnectionError,
        !           410:                HandleError, SessionError, TransferError, UndefinedError ]
        !           411:        = 15;
        !           412: 
        !           413: Deserialize: PROCEDURE [ directory: Handle, attributes: AttributeSequence,
        !           414:                controls: ControlSequence, serializedFile: BulkData.Source,
        !           415:                session: Session ]
        !           416:        RETURNS [ file: Handle ]
        !           417:        REPORTS [ AccessError, AttributeTypeError, AttributeValueError,
        !           418:                AuthenticationError, ConnectionError, ControlTypeError,
        !           419:                ControlValueError, HandleError, InsertionError,
        !           420:                SessionError, SpaceError, TransferError, UndefinedError ]
        !           421:        = 16;
        !           422: 
        !           423: -- Random Access to File Data --
        !           424: 
        !           425: RetrieveBytes: PROCEDURE [ file: Handle, range: ByteRange,
        !           426:                sink: BulkData.Sink, session: Session ]
        !           427:        REPORTS [ AccessError, HandleError, RangeError, SessionError,
        !           428:                UndefinedError ]
        !           429:        = 22;
        !           430: 
        !           431: ReplaceBytes: PROCEDURE [ file: Handle, range: ByteRange,
        !           432:                source: BulkData.Source, session: Session ]
        !           433:        REPORTS [ AccessError, HandleError, RangeError, SessionError,
        !           434:                SpaceError, UndefinedError ]
        !           435:        = 23;
        !           436: 
        !           437: -- Locating and Listing Files in a Directory --
        !           438: 
        !           439: Find: PROCEDURE [ directory: Handle, scope: ScopeSequence,
        !           440:                controls: ControlSequence, session: Session ]
        !           441:        RETURNS [ file: Handle ]
        !           442:        REPORTS [ AccessError, AuthenticationError,
        !           443:                ControlTypeError, ControlValueError, HandleError,
        !           444:                ScopeTypeError, ScopeValueError,
        !           445:                SessionError, UndefinedError ]
        !           446:        = 17;
        !           447: 
        !           448: List: PROCEDURE [ directory: Handle, types: AttributeTypeSequence,
        !           449:                scope: ScopeSequence, listing: BulkData.Sink,
        !           450:                session: Session ]
        !           451:        REPORTS [ AccessError, AttributeTypeError,
        !           452:                AuthenticationError, ConnectionError,
        !           453:                HandleError,
        !           454:                ScopeTypeError, ScopeValueError,
        !           455:                SessionError, TransferError, UndefinedError ]
        !           456:        = 18;
        !           457: 
        !           458: 
        !           459: 
        !           460: 
        !           461: 
        !           462: -- INTERPRETED ATTRIBUTE DEFINITIONS --
        !           463: 
        !           464: -- common definitions --
        !           465: 
        !           466: Time: TYPE = Time.Time;                -- seconds --
        !           467: nullTime: Time = Time.earliestTime;
        !           468: 
        !           469: User: TYPE = Clearinghouse.Name;
        !           470: 
        !           471: -- attributes --
        !           472: 
        !           473: accessList: AttributeType = 19;
        !           474: AccessEntry: TYPE = RECORD [key: Clearinghouse.Name, access: AccessSequence ];
        !           475: AccessList: TYPE = RECORD [entries: SEQUENCE OF AccessEntry, defaulted: BOOLEAN];
        !           476: 
        !           477: checksum: AttributeType = 0;
        !           478: Checksum: TYPE = CARDINAL;
        !           479: unknownChecksum: Checksum = 177777B;
        !           480: 
        !           481: childrenUniquelyNamed: AttributeType = 1;
        !           482: ChildrenUniquelyNamed: TYPE = BOOLEAN;
        !           483: 
        !           484: createdBy: AttributeType = 2;
        !           485: CreatedBy: TYPE = User;
        !           486: 
        !           487: createdOn: AttributeType = 3;
        !           488: CreatedOn: TYPE = Time;
        !           489: 
        !           490: dataSize: AttributeType = 16;
        !           491: DataSize: TYPE = LONG CARDINAL;
        !           492: 
        !           493: fileID: AttributeType = 4;
        !           494: FileID: TYPE = ARRAY 5 OF UNSPECIFIED;
        !           495: nullFileID: FileID = [0,0,0,0,0];
        !           496: 
        !           497: isDirectory: AttributeType = 5;
        !           498: IsDirectory: TYPE = BOOLEAN;
        !           499: 
        !           500: isTemporary: AttributeType = 6;
        !           501: IsTemporary: TYPE = BOOLEAN;
        !           502: 
        !           503: modifiedBy: AttributeType = 7;
        !           504: ModifiedBy: TYPE = User;
        !           505: 
        !           506: modifiedOn: AttributeType = 8;
        !           507: ModifiedOn: TYPE = Time;
        !           508: 
        !           509: name: AttributeType = 9;       -- name relative to parent --
        !           510: Name: TYPE = STRING;   -- must not exceed 100 bytes --
        !           511: 
        !           512: numberOfChildren: AttributeType = 10;
        !           513: NumberOfChildren: TYPE = CARDINAL;
        !           514: 
        !           515: ordering: AttributeType = 11;
        !           516: Ordering: TYPE = RECORD [key: AttributeType, ascending: BOOLEAN,
        !           517:                interpretation: Interpretation];
        !           518: -- see below for defaultOrdering, byAscendingPosition, byDescendingPosition --
        !           519: 
        !           520: parentID: AttributeType = 12;
        !           521: ParentID: TYPE = FileID;
        !           522: 
        !           523: pathname: AttributeType = 21;
        !           524: Pathname: TYPE = STRING;
        !           525: 
        !           526: position: AttributeType = 11;
        !           527: Position: TYPE = SEQUENCE 100 OF UNSPECIFIED;
        !           528: firstPosition: Position = [0];
        !           529: lastPosition: Position = [177777B];
        !           530: 
        !           531: readBy: AttributeType = 14;
        !           532: ReadBy: TYPE = User;
        !           533: 
        !           534: readOn: AttributeType = 15;
        !           535: ReadOn: TYPE = Time;
        !           536: 
        !           537: storedSize: AttributeType = 26;
        !           538: StoredSize: TYPE = LONG CARDINAL;
        !           539: 
        !           540: subtreeSize: AttributeType = 27;
        !           541: SubtreeSize: TYPE = LONG CARDINAL;
        !           542: 
        !           543: subtreeSizeLimit: AttributeType = 28;
        !           544: SubtreeSizeLimit: TYPE = LONG CARDINAL;
        !           545: nullSubtreeSizeLimit: SubtreeSizeLimit = 37777777777B;
        !           546: 
        !           547: type: AttributeType = 17;
        !           548: Type: TYPE = LONG CARDINAL;
        !           549: 
        !           550: version: AttributeType = 18;
        !           551: Version: TYPE = CARDINAL;
        !           552: lowestVersion: Version = 0;
        !           553: highestVersion: Version = 177777B;
        !           554: 
        !           555: defaultOrdering: Ordering = [key: name, ascending: TRUE, interpretation:
        !           556:                string];
        !           557: byAscendingPosition: Ordering = [key: position, ascending: TRUE,
        !           558:                interpretation: interpretationNone];
        !           559: byDescendingPosition: Ordering = [key: position, ascending: FALSE,
        !           560:                interpretation: interpretationNone];
        !           561: 
        !           562: 
        !           563: 
        !           564: 
        !           565: -- BULK DATA FORMATS --
        !           566: 
        !           567: -- Serialized File Format, used in Serialize and Deserialize --
        !           568: 
        !           569: -- SerializedTree should contain following but compiler won't allow it
        !           570: -- Use Sequence of Unspecified  to get around it for now.
        !           571: -- 
        !           572: -- SerializedTree: TYPE = RECORD [
        !           573: --     attributes: AttributeSequence,
        !           574: --     content: RECORD [ data: BulkData.StreamOfUnspecified ,
        !           575: --                     lastByteIsSignificant: BOOLEAN ],
        !           576: --     children: SEQUENCE OF SerializedTree ];
        !           577: 
        !           578: SerializedTree: TYPE = RECORD [
        !           579:        attributes: AttributeSequence,
        !           580:        content: RECORD [ data: BulkData.StreamOfUnspecified ,
        !           581:                        lastByteIsSignificant: BOOLEAN ],
        !           582:        children: SEQUENCE OF UNSPECIFIED ];
        !           583: 
        !           584: SerializedFile: TYPE = RECORD [ version: LONG CARDINAL, file: SerializedTree ];
        !           585: currentVersion: LONG CARDINAL = 3;
        !           586: 
        !           587: 
        !           588: 
        !           589: -- Attribute Series Format, used in List --
        !           590: 
        !           591: StreamOfAttributeSequence: TYPE = CHOICE OF {
        !           592:        nextSegment(0) => RECORD [
        !           593:                segment: SEQUENCE OF AttributeSequence,
        !           594:                restOfStream: StreamOfAttributeSequence],
        !           595:        lastSegment(1) => SEQUENCE OF AttributeSequence};
        !           596: 
        !           597: 
        !           598: 
        !           599: 
        !           600: 
        !           601: -- FILE TYPES --
        !           602: 
        !           603: tUnspecified: Type = 0;
        !           604: tDirectory: Type = 1;
        !           605: tText: Type = 2;
        !           606: tSerialized: Type = 3;
        !           607: tEmpty: Type = 4;
        !           608: 
        !           609: END. -- of Filing --
        !           610: 

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