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-- CXAA006.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 for a bounded line length text file of mode Append_File,
-- when the number of characters to be output exceeds the number of
-- columns remaining on the current line, a call to Put will output
-- characters of the string sufficient to fill the remaining columns of
-- the line (up to line length), then output a line terminator, reset the
-- column number, increment the line number, then output the balance of
-- the item.
--
-- Check that the procedure Put does not raise Layout_Error when the
-- number of characters to be output exceeds the line length of a bounded
-- text file of mode Append_File.
--
-- TEST DESCRIPTION:
-- This test demonstrates the situation where an application intends to
-- output variable length string elements to a text file in the most
-- efficient manner possible. This is the case in a typesetting
-- environment where text is compressed and split between lines of a
-- bounded length.
--
-- The procedure Put will break string parameters placed in the file at
-- the point of the line length. Two examples are demonstrated in this
-- test, one being the case where only one column remains on a line, and
-- the other being the case where a larger portion of the line remains
-- unfilled, but still not sufficient to contain the entire output
-- string.
--
-- During the course of the test, the file is reset to Append_File mode,
-- and the bounded line length is modified for different lines of the
-- file.
--
-- APPLICABILITY CRITERIA:
-- This test is applicable to all implementations that support Text_IO
-- processing and external files.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 25 Feb 97 PWB.CTA Allowed for non-support of some IO operations
--!
with Ada.Text_IO;
with Report;
procedure CXAA006 is
A_Bounded_File : Ada.Text_IO.File_Type;
Bounded_File_Name : constant String :=
Report.Legal_File_Name ( Nam => "CXAA006" );
Incomplete : exception;
begin
Report.Test ("CXAA006", "Check that procedure Put will correctly " &
"output string items to a bounded line " &
"length text file of mode Append_File");
Test_for_Text_IO_Support:
begin
-- An application creates a text file in mode Append_File, with the intention
-- of using the procedure Put to compress variable length string data into the
-- file in the most efficient manner possible.
Ada.Text_IO.Create (File => A_Bounded_File,
Mode => Ada.Text_IO.Append_File,
Name => Bounded_File_Name);
exception
when Ada.Text_IO.Use_Error | Ada.Text_IO.Name_Error =>
Report.Not_Applicable
( "Files not supported - Create with Append_File for Text_IO" );
raise Incomplete;
end Test_For_Text_IO_Support;
Operational_Test_Block:
declare
Twelve_Characters : constant String := "12Characters";
Nineteen_Characters : constant String := "Nineteen_Characters";
TC_Line : Natural := 0;
function TC_Mode_Selection (Selector : Integer)
return Ada.Text_IO.File_Mode is
begin
case Selector is
when 1 => return Ada.Text_IO.In_File;
when 2 => return Ada.Text_IO.Out_File;
when others => return Ada.Text_IO.Append_File;
end case;
end TC_Mode_Selection;
begin
-- The application sets the line length of the file to be bound at 20. All
-- lines in this file will be limited to that length.
Ada.Text_IO.Set_Line_Length (A_Bounded_File, 20);
Ada.Text_IO.Put (A_Bounded_File, Nineteen_Characters);
-- Test control code.
if (Integer(Ada.Text_IO.Line (A_Bounded_File)) /=
Report.Ident_Int(1)) or
(Integer(Ada.Text_IO.Col (A_Bounded_File)) /=
Report.Ident_Int(20)) then
Report.Failed ("Incorrect position after 1st Put");
end if;
-- The application finds that there is only one column available on the
-- current line, so the next string item to be output must be broken at
-- the appropriate place (following the first character).
Ada.Text_IO.Put (File => A_Bounded_File,
Item => Twelve_Characters);
-- Test control code.
if (Integer(Ada.Text_IO.Line (A_Bounded_File)) /=
Report.Ident_Int(2)) or
(Integer(Ada.Text_IO.Col (A_Bounded_File)) /=
Report.Ident_Int(12)) then
Report.Failed ("Incorrect position after 2nd Put");
end if;
-- The application subsequently modifies the processing, resetting the file
-- at this point to In_File mode in order to verify data that has been written
-- to the file. Following this, the application resets the file to Append_File
-- mode in order to continue the placement of data into the file, but modifies
-- the original bounded line length for subsequent lines to be appended.
-- Reset to Append mode; call outputs page terminator and
-- resets line length to Unbounded.
Reset1:
begin
Ada.Text_IO.Reset (A_Bounded_File,
TC_Mode_Selection (Report.Ident_Int(3)));
exception
when Ada.Text_IO.Use_Error =>
Report.Not_Applicable
( "Reset to Append_File not supported for Text_IO" );
raise Incomplete;
end Reset1;
Ada.Text_IO.Set_Line_Length (A_Bounded_File, 15);
-- Store line number for later comparison.
TC_Line := Natural(Ada.Text_IO.Line(A_Bounded_File));
-- The application finds that fifteen columns are available on the current
-- line but that the string item to be output exceeds this available space.
-- It must be split at the end of the line, and the balance placed on the
-- next file line.
Ada.Text_IO.Put (File => A_Bounded_File,
Item => Nineteen_Characters);
-- Test control code.
-- Positioned on new line at col 5.
if (Natural(Ada.Text_IO.Line (A_Bounded_File)) /=
(TC_Line + 1)) or
(Integer(Ada.Text_IO.Col (A_Bounded_File)) /=
Report.Ident_Int(5)) then
Report.Failed ("Incorrect position after 3rd Put");
end if;
Test_Verification_Block:
declare
First_String : String (1 .. 80);
Second_String : String (1 .. 80);
Third_String : String (1 .. 80);
Fourth_String : String (1 .. 80);
TC_Width1 : Natural;
TC_Width2 : Natural;
TC_Width3 : Natural;
TC_Width4 : Natural;
begin
-- The application has the capability to reset the file to In_File mode to
-- verify some or all of the data that is contained there.
Reset2:
begin
Ada.Text_IO.Reset (A_Bounded_File, Ada.Text_IO.In_File);
exception
when others =>
Report.Not_Applicable
( "Reset to In_File not supported for Text_IO" );
raise Incomplete;
end Reset2;
Ada.Text_IO.Get_Line
(A_Bounded_File, First_String, TC_Width1);
Ada.Text_IO.Get_Line
(A_Bounded_File, Second_String, TC_Width2);
Ada.Text_IO.Get_Line
(A_Bounded_File, Third_String, TC_Width3);
Ada.Text_IO.Get_Line
(A_Bounded_File, Fourth_String, TC_Width4);
-- Test control code.
if (First_String (1..TC_Width1) /= Nineteen_Characters & "1") or
(Second_String (1..TC_Width2) /= "2Characters") or
(Third_String (1..TC_Width3) /=
Nineteen_Characters(1..15)) or
(Fourth_String (1..TC_Width4) /= "ters")
then
Report.Failed ("Data placed incorrectly in file");
end if;
exception
when Incomplete =>
raise;
when Ada.Text_IO.End_Error =>
Report.Failed ("Incorrect number of lines in file");
when others =>
Report.Failed ("Error raised during data verification");
end Test_Verification_Block;
exception
when Ada.Text_IO.Layout_Error =>
Report.Failed ("Layout Error raised when positioning text");
when others =>
Report.Failed ("Exception in Text_IO processing");
end Operational_Test_Block;
Final_Block:
begin
-- Delete the external file.
if Ada.Text_IO.Is_Open(A_Bounded_File) then
Ada.Text_IO.Delete (A_Bounded_File);
else
Ada.Text_IO.Open (A_Bounded_File,
Ada.Text_IO.In_File,
Bounded_File_Name);
Ada.Text_IO.Delete (A_Bounded_File);
end if;
exception
when others =>
Report.Failed
( "Delete not properly implemented for Text_IO" );
end Final_Block;
Report.Result;
exception
when Incomplete =>
Report.Result;
when others =>
Report.Failed ( "Unexpected exception" );
Report.Result;
end CXAA006;
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