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-- CXAA001.A
--
-- 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 the Line_Length and Page_Length maximums for a Text_IO
-- file of mode Append_File are initially zero (unbounded) after a
-- Create, Open, or Reset, and that these values can be modified using
-- the procedures Set_Line_Length and Set_Page_Length.
-- Check that setting the Line_Length and Page_Length attributes to zero
-- results in an unbounded Text_IO file.
-- Check that setting the line length when in Append_Mode doesn't
-- change the length of lines previously written to the Text_IO file.
--
-- TEST DESCRIPTION:
-- This test attempts to simulate a possible text processing environment.
-- String values, from a number of different string types, are written to
-- a Text_IO file. Prior to the writing of each, the line length is set
-- to the particular length of the data being written. In addition, the
-- default line and page lengths are checked, to determine whether they
-- are unbounded (length = 0) following a create, reset, or open of a
-- Text_IO file with mode Append_File.
--
-- APPLICABILITY CRITERIA:
-- This test is applicable only to implementations that support text
-- files.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 27 Feb 97 PWB.CTA Allowed for non-support of some IO operations
--!
with Ada.Text_IO;
with Report;
procedure CXAA001 is
use Ada;
Data_File : Text_IO.File_Type;
Data_Filename : constant String :=
Report.Legal_File_Name ( Nam => "CXAA001" );
Incomplete : exception;
begin
Report.Test ("CXAA001","Check that the Line_Length and Page_Length " &
"maximums for a Text_IO file of mode Append_File " &
"are initially zero (unbounded) after a Create, " &
"Open, or Reset, and that these values can be " &
"modified using the procedures Set_Line_Length " &
"and Set_Page_Length");
Test_for_Text_IO_Support:
begin
-- An implementation that does not support Text_IO in a particular
-- environment will raise Use_Error on calls to various
-- Text_IO operations. This block statement encloses a call to
-- Create, which should raise an exception in a non-supportive
-- environment. This exception will be handled to produce a
-- Not_Applicable result.
Text_IO.Create (File => Data_File,
Mode => Text_IO.Append_File,
Name => Data_Filename);
exception
when Text_IO.Use_Error | Text_IO.Name_Error =>
Report.Not_Applicable
( "Files not supported - Create as Append_File for Text_IO" );
raise Incomplete;
end Test_for_Text_IO_Support;
Operational_Test_Block:
declare
subtype Confidential_Data_Type is string (1 .. 10);
subtype Secret_Data_Type is string (1 .. 20);
subtype Top_Secret_Data_Type is string (1 .. 30);
Zero : constant Text_IO.Count := 0;
Confidential_Data_Size : constant Text_IO.Count := 10;
Secret_Data_Size : constant Text_IO.Count := 20;
Top_Secret_Data_Size : constant Text_IO.Count := 30;
-- The following generic procedure is designed to simulate a text
-- processing environment where line and page sizes are set and
-- verified prior to the writing of data to a file.
generic
Data_Size : Text_IO.Count;
procedure Write_Data_To_File (Data_Item : in String);
procedure Write_Data_To_File (Data_Item : in String) is
use Text_IO; -- Used to provide visibility to the "/=" operator.
begin
if (Text_IO.Line_Length (Data_File) /= Zero) then -- Check default
Report.Failed("Line not of unbounded length"); -- line length,
elsif (Text_IO.Page_Length (Data_File) /= Zero) then -- default
Report.Failed ("Page not of unbounded length"); -- page length.
end if;
Text_IO.Set_Line_Length (File => Data_File, -- Set the line
To => Data_Size); -- length.
Text_IO.Set_Page_Length (File => Data_File, -- Set the page
To => Data_Size); -- length.
-- Verify the lengths set.
if (Integer(Text_IO.Line_Length (Data_File)) /=
Report.Ident_Int(Integer(Data_Size))) then
Report.Failed ("Line length not set to appropriate length");
elsif (Integer(Text_IO.Page_Length (Data_File)) /=
Report.Ident_Int(Integer(Data_Size))) then
Report.Failed ("Page length not set to appropriate length");
end if;
Text_IO.Put_Line (File => Data_File, -- Write data to
Item => Data_Item); -- file.
end Write_Data_To_File;
-- Instantiation for the three data types/sizes.
procedure Write_Confidential_Data is
new Write_Data_To_File (Data_Size => Confidential_Data_Size);
procedure Write_Secret_Data is
new Write_Data_To_File (Data_Size => Secret_Data_Size);
procedure Write_Top_Secret_Data is
new Write_Data_To_File (Data_Size => Top_Secret_Data_Size);
Confidential_Item : Confidential_Data_Type := "Confidenti";
Secret_Item : Secret_Data_Type := "Secret Data Values ";
Top_Secret_Item : Top_Secret_Data_Type :=
"Extremely Top Secret Data ";
begin
-- The following call simulates processing occurring after the create
-- of a Text_IO file with mode Append_File.
Write_Confidential_Data (Confidential_Item);
-- The following call simulates processing occurring after the reset
-- of a Text_IO file with mode Append_File.
Reset1:
begin
Text_IO.Reset (Data_File, Text_IO.Append_File); -- Reset to
-- Append_File mode.
exception
when Text_IO.Use_Error =>
Report.Not_Applicable
( "Reset to Append_File not supported for Text_IO" );
raise Incomplete;
end Reset1;
Write_Secret_Data (Data_Item => Secret_Item);
Text_IO.Close (Data_File); -- Close file.
-- The following processing simulates processing occurring after the
-- opening of an existing file with mode Append_File.
Text_IO.Open (Data_File, -- Open file in
Text_IO.Append_File, -- Append_File mode.
Data_Filename);
Write_Top_Secret_Data (Top_Secret_Item);
Test_Verification_Block:
declare
TC_String1,
TC_String2,
TC_String3 : String (1..80) := (others => ' ');
TC_Length1,
TC_Length2,
TC_Length3 : Natural := 0;
begin
Reset2:
begin
Text_IO.Reset (Data_File, Text_IO.In_File); -- Reset for reading.
exception
when Text_IO.Use_Error =>
Report.Not_Applicable
( "Reset to In_File not supported for Text_IO" );
raise Incomplete;
end Reset2;
Text_IO.Get_Line (Data_File, TC_String1, TC_Length1);
Text_IO.Get_Line (Data_File, TC_String2, TC_Length2);
Text_IO.Get_Line (Data_File, TC_String3, TC_Length3);
-- Verify that the line lengths of each line were accurate.
-- Note: Each data line was written to the file after the
-- particular line length had been set (to the data length).
if not ((TC_Length1 = Natural(Confidential_Data_Size)) and
(TC_Length2 = Natural(Secret_Data_Size)) and
(TC_Length3 = Natural(Top_Secret_Data_Size))) then
Report.Failed ("Inaccurate line lengths read from file");
end if;
-- Verify that the data read from the file are accurate.
if (TC_String1(1..TC_Length1) /= Confidential_Item) or else
(TC_String2(1..TC_Length2) /= Secret_Item) or else
(TC_String3(1..TC_Length3) /= Top_Secret_Item) then
Report.Failed ("Corrupted data items read from file");
end if;
exception
when Incomplete =>
raise;
when others =>
Report.Failed ("Error raised during data verification");
end Test_Verification_Block;
exception
when Incomplete =>
raise;
when others =>
Report.Failed ("Exception raised during Text_IO processing");
end Operational_Test_Block;
Deletion:
begin
-- Check that the file is open prior to deleting it.
if Text_IO.Is_Open(Data_File) then
Text_IO.Delete(Data_File);
else
Text_IO.Open(Data_File, Text_IO.In_File, Data_Filename);
Text_IO.Delete(Data_File);
end if;
exception
when others =>
Report.Failed
( "Delete not properly implemented for Text_IO" );
end Deletion;
Report.Result;
exception
when Incomplete =>
Report.Result;
when others =>
Report.Failed ( "Unexpected exception" );
Report.Result;
end CXAA001;
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