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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
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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;