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1 149 jeremybenn
-- CXAA001.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 Line_Length and Page_Length maximums for a Text_IO
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--      file of mode Append_File are initially zero (unbounded) after a
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--      Create, Open, or Reset, and that these values can be modified using
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--      the procedures Set_Line_Length and Set_Page_Length.
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--      Check that setting the Line_Length and Page_Length attributes to zero
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--      results in an unbounded Text_IO file.
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--      Check that setting the line length when in Append_Mode doesn't
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--      change the length of lines previously written to the Text_IO file.
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--
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-- TEST DESCRIPTION:
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--      This test attempts to simulate a possible text processing environment.
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--      String values, from a number of different string types, are written to
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--      a Text_IO file.  Prior to the writing of each, the line length is set
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--      to the particular length of the data being written.  In addition, the
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--      default line and page lengths are checked, to determine whether they
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--      are unbounded (length = 0) following a create, reset, or open of a
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--      Text_IO file with mode Append_File.
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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 CXAA001 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 => "CXAA001" );
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   Incomplete : exception;
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begin
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   Report.Test ("CXAA001","Check that the Line_Length and Page_Length "      &
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                          "maximums for a Text_IO file of mode Append_File " &
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                          "are initially zero (unbounded) after a Create, "  &
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                          "Open, or Reset, and that these values can be "    &
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                          "modified using the procedures Set_Line_Length "   &
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                          "and Set_Page_Length");
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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 an 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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94
   end Test_for_Text_IO_Support;
95
 
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   Operational_Test_Block:
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   declare
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      subtype Confidential_Data_Type is string (1 .. 10);
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      subtype Secret_Data_Type       is string (1 .. 20);
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      subtype Top_Secret_Data_Type   is string (1 .. 30);
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      Zero                   : constant Text_IO.Count :=  0;
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      Confidential_Data_Size : constant Text_IO.Count := 10;
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      Secret_Data_Size       : constant Text_IO.Count := 20;
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      Top_Secret_Data_Size   : constant Text_IO.Count := 30;
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      -- The following generic procedure is designed to simulate a text
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      -- processing environment where line and page sizes are set and
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      -- verified prior to the writing of data to a file.
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      generic
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         Data_Size : Text_IO.Count;
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      procedure Write_Data_To_File (Data_Item : in String);
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      procedure Write_Data_To_File (Data_Item : in String) is
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         use Text_IO;  -- Used to provide visibility to the "/=" operator.
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      begin
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         if (Text_IO.Line_Length (Data_File) /= Zero) then -- Check default
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            Report.Failed("Line not of unbounded length"); -- line length,
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         elsif (Text_IO.Page_Length (Data_File) /= Zero) then -- default
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            Report.Failed ("Page not of unbounded length"); -- page length.
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         end if;
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         Text_IO.Set_Line_Length (File => Data_File,    -- Set the line
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                                  To   => Data_Size);   -- length.
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         Text_IO.Set_Page_Length (File => Data_File,    -- Set the page
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                                  To   => Data_Size);   -- length.
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         -- Verify the lengths set.
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         if (Integer(Text_IO.Line_Length (Data_File)) /=
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             Report.Ident_Int(Integer(Data_Size))) then
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            Report.Failed ("Line length not set to appropriate length");
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         elsif (Integer(Text_IO.Page_Length (Data_File)) /=
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                Report.Ident_Int(Integer(Data_Size))) then
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            Report.Failed ("Page length not set to appropriate length");
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         end if;
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         Text_IO.Put_Line (File => Data_File,           -- Write data to
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                           Item => Data_Item);          -- file.
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      end Write_Data_To_File;
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      -- Instantiation for the three data types/sizes.
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      procedure Write_Confidential_Data is
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        new Write_Data_To_File (Data_Size => Confidential_Data_Size);
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      procedure Write_Secret_Data is
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        new Write_Data_To_File (Data_Size => Secret_Data_Size);
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      procedure Write_Top_Secret_Data is
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        new Write_Data_To_File (Data_Size => Top_Secret_Data_Size);
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      Confidential_Item : Confidential_Data_Type := "Confidenti";
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      Secret_Item       : Secret_Data_Type       := "Secret Data Values  ";
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      Top_Secret_Item   : Top_Secret_Data_Type   :=
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        "Extremely Top Secret Data     ";
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   begin
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      -- The following call simulates processing occurring after the create
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      -- of a Text_IO file with mode Append_File.
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      Write_Confidential_Data (Confidential_Item);
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      -- The following call simulates processing occurring after the reset
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      -- of a Text_IO file with mode Append_File.
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      Reset1:
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      begin
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         Text_IO.Reset (Data_File, Text_IO.Append_File); -- Reset to
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                                                         -- Append_File mode.
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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 Append_File not supported for Text_IO" );
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            raise Incomplete;
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      end Reset1;
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      Write_Secret_Data (Data_Item    => Secret_Item);
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      Text_IO.Close (Data_File);                      -- Close file.
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      -- The following processing simulates processing occurring after the
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      -- opening of an existing file with mode Append_File.
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      Text_IO.Open (Data_File,                        -- Open file in
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                    Text_IO.Append_File,              -- Append_File mode.
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                    Data_Filename);
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      Write_Top_Secret_Data (Top_Secret_Item);
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      Test_Verification_Block:
194
      declare
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         TC_String1,
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         TC_String2,
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         TC_String3  : String (1..80) := (others => ' ');
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         TC_Length1,
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         TC_Length2,
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         TC_Length3  : Natural := 0;
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      begin
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         Reset2:
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         begin
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            Text_IO.Reset (Data_File, Text_IO.In_File); -- Reset for reading.
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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 Reset2;
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         Text_IO.Get_Line (Data_File, TC_String1, TC_Length1);
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         Text_IO.Get_Line (Data_File, TC_String2, TC_Length2);
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         Text_IO.Get_Line (Data_File, TC_String3, TC_Length3);
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         -- Verify that the line lengths of each line were accurate.
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         -- Note: Each data line was written to the file after the
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         -- particular line length had been set (to the data length).
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         if not ((TC_Length1 = Natural(Confidential_Data_Size)) and
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                 (TC_Length2 = Natural(Secret_Data_Size))       and
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                 (TC_Length3 = Natural(Top_Secret_Data_Size)))  then
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            Report.Failed ("Inaccurate line lengths read from file");
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         end if;
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         -- Verify that the data read from the file are accurate.
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         if (TC_String1(1..TC_Length1) /= Confidential_Item) or else
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            (TC_String2(1..TC_Length2) /= Secret_Item)       or else
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            (TC_String3(1..TC_Length3) /= Top_Secret_Item)   then
232
            Report.Failed ("Corrupted data items read from file");
233
         end if;
234
 
235
      exception
236
 
237
         when Incomplete =>
238
            raise;
239
 
240
         when others =>
241
               Report.Failed ("Error raised during data verification");
242
 
243
      end Test_Verification_Block;
244
 
245
   exception
246
 
247
         when Incomplete =>
248
            raise;
249
 
250
         when others =>
251
            Report.Failed ("Exception raised during Text_IO processing");
252
 
253
      end Operational_Test_Block;
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      Deletion:
256
      begin
257
         -- Check that the file is open prior to deleting it.
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         if Text_IO.Is_Open(Data_File) then
259
            Text_IO.Delete(Data_File);
260
         else
261
            Text_IO.Open(Data_File, Text_IO.In_File, Data_Filename);
262
            Text_IO.Delete(Data_File);
263
         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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270
   Report.Result;
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272
exception
273
   when Incomplete =>
274
      Report.Result;
275
   when others     =>
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      Report.Failed ( "Unexpected exception" );
277
      Report.Result;
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end CXAA001;

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