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-- CE2208B.ADA

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 

--     this public release, the Government intends to confer upon all 

--     recipients unlimited rights  equal to those held by the Government.  

--     These rights include rights to use, duplicate, release or disclose the 

--     released technical data and computer software in whole or in part, in 

--     any manner and for any purpose whatsoever, and to have or permit others 

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

-- OBJECTIVE:

--     CHECK THAT DATA CAN BE OVERWRITTEN IN THE SEQUENTIAL FILE AND THE

--     CORRECT VALUES CAN LATER BE READ.  ALSO CHECK THAT OVERWRITING

--     TRUNCATES THE FILE TO THE LAST ELEMENT WRITTEN.

-- APPLICABILITY CRITERIA:

--      THIS TEST IS APPLICABLE ONLY TO IMPLEMENTATIONS WHICH SUPPORT

--      THE CREATING AND OPENING OF SEQUENTIAL FILES.

-- HISTORY:

--     TBN  09/30/86  CREATED ORIGINAL TEST.

--     GMT  07/24/87  ADDED CHECKS FOR USE_ERROR AND REMOVED SOME CODE.

--     BCB  10/03/90  CHANGED CODE TO CHECK THAT OVERWRITING TRUNCATES

--                    INSTEAD OF WHETHER IT TRUNCATES.

WITH SEQUENTIAL_IO;

WITH REPORT; USE REPORT;

PROCEDURE CE2208B IS

     PACKAGE SEQ_IO IS NEW SEQUENTIAL_IO (INTEGER);

     USE SEQ_IO;

     FILE1      : FILE_TYPE;

     INCOMPLETE : EXCEPTION;

BEGIN

     TEST ("CE2208B",

           "CHECK THAT DATA CAN BE OVERWRITTEN IN THE SEQUENTIAL " &

           "FILE AND THE CORRECT VALUES CAN LATER BE READ.  ALSO " &

           "CHECK THAT OVERWRITING TRUNCATES THE FILE." );

     -- INITIALIZE TEST FILE

     BEGIN

          CREATE (FILE1, OUT_FILE, LEGAL_FILE_NAME);

     EXCEPTION

          WHEN NAME_ERROR =>

               NOT_APPLICABLE ("NAME_ERROR RAISED DURING CREATE");

               RAISE INCOMPLETE;

          WHEN USE_ERROR =>

               NOT_APPLICABLE ("USE_ERROR RAISED DURING CREATE");

               RAISE INCOMPLETE;

          WHEN OTHERS =>

               FAILED ("UNKNOWN EXCEPTION RAISED DURING CREATE");

               RAISE INCOMPLETE;

     END;

     BEGIN

          FOR I IN 1 .. 25 LOOP

               WRITE (FILE1, I);

          END LOOP;

     EXCEPTION

          WHEN OTHERS =>

               FAILED ("UNEXPECTED EXCEPTION RAISED DURING WRITE");

               RAISE INCOMPLETE;

     END;

     BEGIN

          CLOSE (FILE1);

     EXCEPTION

          WHEN OTHERS =>

               FAILED ("UNEXPECTED EXCEPTION RAISED DURING CLOSE");

               RAISE INCOMPLETE;

     END;

     BEGIN

          OPEN (FILE1, OUT_FILE, LEGAL_FILE_NAME);

     EXCEPTION

          WHEN USE_ERROR =>

               NOT_APPLICABLE ( "OPEN WITH  OUT_FILE  MODE NOT "  &

                                "SUPPORTED FOR SEQUENTIAL FILES" );

               RAISE INCOMPLETE;

          WHEN OTHERS =>

               FAILED ("EXCEPTION RAISED DURING OPEN");

               RAISE INCOMPLETE;

     END;

     BEGIN

          FOR I IN 26 .. 36 LOOP

               WRITE (FILE1, I);

          END LOOP;

     EXCEPTION

          WHEN OTHERS =>

               FAILED ("UNEXPECTED EXCEPTION RAISED DURING OVERWRITE");

               RAISE INCOMPLETE;

     END;

     BEGIN

          CLOSE (FILE1);

     EXCEPTION

          WHEN OTHERS =>

               FAILED ("UNEXPECTED EXCEPTION RAISED DURING 2ND CLOSE");

               RAISE INCOMPLETE;

     END;

     BEGIN

          OPEN (FILE1, IN_FILE, LEGAL_FILE_NAME);

     EXCEPTION

          WHEN USE_ERROR =>

               NOT_APPLICABLE ( "OPEN WITH  IN_FILE  MODE NOT "   &

                                "SUPPORTED FOR SEQUENTIAL FILES" );

               RAISE INCOMPLETE;

          WHEN OTHERS =>

               FAILED ("EXCEPTION RAISED DURING SECOND OPEN");

               RAISE INCOMPLETE;

     END;

     DECLARE

          END_REACHED : BOOLEAN := FALSE;

          COUNT : INTEGER := 26;

          NUM : INTEGER;

     BEGIN

          WHILE COUNT <= 36 AND NOT END_REACHED LOOP

               BEGIN

                    READ (FILE1, NUM);

                    IF NUM /= COUNT THEN

                         FAILED ("INCORRECT RESULTS READ FROM FILE " &

                                 INTEGER'IMAGE (NUM));

                    END IF;

                    COUNT := COUNT + 1;

               EXCEPTION

                    WHEN END_ERROR =>

                         END_REACHED := TRUE;

                    WHEN OTHERS =>

                         FAILED ("UNEXPECTED EXCEPTION RAISED DURING " &

                                 "READING - 1");

                         RAISE INCOMPLETE;

               END;

          END LOOP;

          IF COUNT <= 36 THEN

               FAILED ("FILE WAS INCOMPLETE");

               RAISE INCOMPLETE;

          ELSE

               BEGIN

                    READ (FILE1, NUM);

                    FAILED ("END_ERROR NOT RAISED BY ATTEMPT TO READ");

               EXCEPTION

                    WHEN END_ERROR =>

                         NULL;

                    WHEN OTHERS =>

                         FAILED ("UNEXPECTED EXCEPTION RAISED " &

                                 "DURING READING - 2");

                         RAISE INCOMPLETE;

               END;

          END IF;

     END;

     BEGIN

          DELETE (FILE1);

     EXCEPTION

          WHEN USE_ERROR =>

               NULL;

     END;

     RESULT;

EXCEPTION

     WHEN INCOMPLETE =>

          RESULT;

END CE2208B;