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1 149 jeremybenn
-- CXAA002.A
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--
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
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--     this public release, the Government intends to confer upon all
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--     recipients unlimited rights  equal to those held by the Government.
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--     These rights include rights to use, duplicate, release or disclose the
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--     released technical data and computer software in whole or in part, in
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--     any manner and for any purpose whatsoever, and to have or permit others
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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--      Check that the procedures New_Page, Set_Line, Set_Col, and New_Line
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--      subprograms perform properly on a text file created with mode
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--      Append_File.
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--      Check that the attributes Page, Line, and Column are all set to 1
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--      following the creation of a text file with mode Append_File.
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--      Check that the functions Page, Line, and Col perform properly on a
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--      text file created with mode Append_File.
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--      Check that the procedures Put and Put_Line perform properly on text
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--      files created with mode Append_File.
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--      Check that the procedure Set_Line sets the current line number to
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--      the value specified by the parameter "To" for text files created with
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--      mode Append_File.
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--      Check that the procedure Set_Col sets the current column number to
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--      the value specified by the parameter "To" for text files created with
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--      mode Append_File.
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--
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-- TEST DESCRIPTION:
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--      This test is designed to simulate the text processing that could
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--      occur with files that have been created in Append_File mode. Various
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--      calls to Text_IO formatting subprograms are called to properly
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--      position text appended to a document.  The text content and position
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--      are subsequently verified for accuracy.
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--
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-- APPLICABILITY CRITERIA:
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--      This test is applicable only to implementations that support text
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--      files.
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--
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--
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-- CHANGE HISTORY:
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--      06 Dec 94   SAIC    ACVC 2.0
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--      27 Feb 97   PWB.CTA Allowed for non-support of some IO operations
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--!
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with Ada.Text_IO;
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with Report;
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procedure CXAA002 is
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   use Ada;
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      Data_File        : Text_IO.File_Type;
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      Data_Filename    : constant String :=
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                             Report.Legal_File_Name ( Nam => "CXAA002" );
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   Incomplete : exception;
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begin
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   Report.Test ("CXAA002", "Check that page, line, and column formatting " &
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                           "subprograms perform properly on text files "   &
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                           "created with mode Append_File");
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   Test_for_Text_IO_Support:
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   begin
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      -- An implementation that does not support Text_IO in a particular
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      -- environment will raise Use_Error on calls to various
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      -- Text_IO operations.  This block statement encloses a call to
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      -- Create, which should raise the exception in a non-supportive
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      -- environment.  This exception will be handled to produce a
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      -- Not_Applicable result.
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      Text_IO.Create (File => Data_File,
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                      Mode => Text_IO.Append_File,
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                      Name => Data_Filename);
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   exception
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      when Text_IO.Use_Error | Text_IO.Name_Error =>
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         Report.Not_Applicable
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           ( "Files not supported - Create as Append_File for Text_IO" );
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         raise Incomplete;
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   end Test_for_Text_IO_Support;
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   Operational_Test_Block:
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   declare
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      Default_Position : constant Text_IO.Positive_Count := 1;
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      Section_Header   : constant String := "VII.  ";
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      Appendix_Title   : constant String := "Appendix A";
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      Appendix_Content : constant String := "TBD";
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      -- The following procedure simulates the addition of an Appendix page
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      -- to an existing text file.
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      procedure Position_Appendix_Text is
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         use Text_IO;   -- To provide visibility to the "/=" operator.
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      begin
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         -- Test control code.
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         -- Verify initial page, line, column number.
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         if "/="(Text_IO.Page (Data_File), Default_Position) then
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            Report.Failed ("Incorrect default page number");
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         end if;
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         if Text_IO.Line (Data_File) /= Default_Position then
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            Report.Failed ("Incorrect default line number");
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         end if;
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         if "/="(Text_IO.Col (Data_File), Default_Position) then
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            Report.Failed ("Incorrect default column number");
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         end if;
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         -- Simulated usage code.
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         -- Set new page/line positions.
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         Text_IO.Put_Line
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           (Data_File, "Add some optional data to the file here");
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         Text_IO.New_Page (Data_File);
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         Text_IO.New_Line (File => Data_File, Spacing => 2);
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         -- Test control code.
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         if Integer(Text_IO.Page (Data_File)) /= Report.Ident_Int(2) or else
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            Integer(Text_IO.Line (Data_File)) /= Report.Ident_Int(3) then
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            Report.Failed ("Incorrect results from page/line positioning");
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         end if;
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         -- Simulated usage code.
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         Text_IO.Put      (Data_File, Section_Header);     -- Position title
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         Text_IO.Put_Line (Data_File, Appendix_Title);     -- of Appendix.
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         Text_IO.Set_Line (File => Data_File, To => 5);    -- Set new
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         Text_IO.Set_Col  (File => Data_File, To => 8);    -- position.
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         -- Test control code.
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         if (Integer(Text_IO.Line (Data_File)) /= Report.Ident_Int(5)) or
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            (Integer(Text_IO.Col  (Data_File)) /= Report.Ident_Int(8)) then
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            Report.Failed ("Incorrect results from line/column positioning");
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         end if;
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         -- Simulated usage code.                          -- Position
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         Text_IO.Put_Line (Data_File, Appendix_Content);   -- content of
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                                                           -- Appendix.
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      end Position_Appendix_Text;
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   begin
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      -- This code section simulates a scenario that could occur in a
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      -- text processing environment:
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      --    A document is created/modified/edited Then...
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      --    Text is to be appended to the document.
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      --    A procedure is called to perform that operation.
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      --    The position on the appended page is set, verified, and text is
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      --    appended to the existing file.
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      --
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      -- Note: The text file has been originally created in Append_File
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      -- mode, and has not been closed prior to this processing.
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      Position_Appendix_Text;
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      Test_Verification_Block:
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      declare
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         TC_Page,
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         TC_Line,
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         TC_Column   : Text_IO.Positive_Count;
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         TC_Position : Natural := 0;
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         Blanks      : constant String  := "                 ";
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         TC_String   : String (1 .. 17) := Blanks;
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      begin
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         Reset1:
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         begin
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            Text_IO.Reset     (Data_File, Text_IO.In_File);
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         exception
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            when Text_IO.Use_Error =>
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               Report.Not_Applicable
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                  ( "Reset to In_File not supported for Text_IO" );
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               raise Incomplete;
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         end Reset1;
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         Text_IO.Skip_Page (Data_File);
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                                                 -- Loop to the third line
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         for I in 1 .. 3 loop                    -- and read the contents.
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            Text_IO.Get_Line (Data_File, TC_String, TC_Position);
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         end loop;
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         if (TC_Position /= 16) or else          -- Verify the title line.
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            (TC_String (1..4)  /= "VII.") or else
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            (TC_String (3..16) /= ("I.  " & Appendix_Title)) then
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            Report.Failed ("Incorrect positioning of title line");
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         end if;
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         TC_String := Blanks;                    -- Clear string.
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                                                 -- Loop to the fifth line
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         for I in 4 .. 5 loop                    -- and read the contents.
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            Text_IO.Get_Line (Data_File, TC_String, TC_Position);
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         end loop;
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         if (TC_Position /= 10) or               -- Verify the contents.
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            (TC_String (8..10) /= Appendix_Content) then
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            Report.Failed ("Incorrect positioning of contents line");
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         end if;
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      exception
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         when Incomplete =>
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            raise;
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         when others =>
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               Report.Failed ("Error raised during data verification");
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221
      end Test_Verification_Block;
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   exception
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         when Incomplete =>
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            raise;
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         when others =>
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            Report.Failed ("Exception raised during Text_IO processing");
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231
   end Operational_Test_Block;
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   Deletion:
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   begin
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      -- Delete the external file.
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      if Text_IO.Is_Open(Data_File) then
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         Text_IO.Delete(Data_File);
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      else
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         Text_IO.Open(Data_File, Text_IO.In_File, Data_Filename);
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         Text_IO.Delete(Data_File);
241
      end if;
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   exception
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      when others =>
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         Report.Failed
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            ( "Delete not properly implemented for Text_IO" );
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   end Deletion;
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   Report.Result;
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250
exception
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   when Incomplete =>
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      Report.Result;
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   when others     =>
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      Report.Failed ( "Unexpected exception" );
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      Report.Result;
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end CXAA002;

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