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-- CXA4021.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 subprograms defined in package
-- Ada.Strings.Wide_Unbounded are available, and that they produce
-- correct results. Specifically, check the subprograms Head, Index,
-- Index_Non_Blank, Insert, Length, Overwrite, Replace_Slice, Slice,
-- Tail, To_Wide_String, To_Unbounded_Wide_String, "*", "&",
-- and "=", "<=", ">=".
--
-- TEST DESCRIPTION:
-- This test demonstrates the uses of many of the subprograms defined
-- in package Ada.Strings.Wide_Unbounded for use with unbounded wide
-- strings.
-- The test attempts to simulate how unbounded wide strings could be used
-- to simulate paragraphs of text. Modifications could be easily be
-- performed using the provided subprograms (although in this test, the
-- main modification performed was the addition of more text to the
-- string). One would not have to worry about the formatting of the
-- paragraph until it was finished and correct in content. Then, once
-- all required editing is complete, the unbounded strings can be divided
-- up into the appropriate lengths based on particular formatting
-- requirements. The test then compares the formatted text product
-- with a predefined "finished product".
--
-- This test attempts to use a large number of the subprograms provided
-- by package Ada.Strings.Wide_Unbounded. Often, the processing involved
-- could have been performed more efficiently using a minimum number
-- of the subprograms, in conjunction with loops, etc. However, for
-- testing purposes, and in the interest of minimizing the number of
-- tests developed, subprogram variety and feature mixing was stressed.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
--
--!
with Report;
with Ada.Characters.Handling;
with Ada.Strings.Wide_Maps;
with Ada.Strings.Wide_Unbounded;
procedure CXA4021 is
-- The following two functions are used to translate character and string
-- values to "Wide" values. They will be applied to all the Wide_Bounded
-- subprogram character and string parameters to simulate the use of non-
-- character Wide_Characters and Wide_Strings in actual practice.
-- Note: These functions do not actually return "equivalent" wide
-- characters to their character inputs, just "non-character"
-- wide characters.
function Equiv (Ch : Character) return Wide_Character is
C : Character := Ch;
begin
if Ch = ' ' then
return Ada.Characters.Handling.To_Wide_Character(C);
else
return Wide_Character'Val(Character'Pos(Ch) +
Character'Pos(Character'Last) + 1);
end if;
end Equiv;
function Equiv (Str : String) return Wide_String is
WS : Wide_String(Str'First..Str'Last);
begin
for i in Str'First..Str'Last loop
WS(i) := Equiv(Str(i));
end loop;
return WS;
end Equiv;
begin
Report.Test ("CXA4021", "Check that the subprograms defined in " &
"package Ada.Strings.Wide_Unbounded are " &
"available, and that they produce correct " &
"results");
Test_Block:
declare
package ASW renames Ada.Strings.Wide_Unbounded;
use type ASW.Unbounded_Wide_String;
use Ada.Strings;
Pamphlet_Paragraph_Count : constant := 2;
Lines : constant := 4;
Line_Length : constant := 40;
type Document_Type is array (Positive range <>)
of ASW.Unbounded_Wide_String;
type Camera_Ready_Copy_Type is array (1..Lines)
of Wide_String (1..Line_Length);
Pamphlet : Document_Type (1..Pamphlet_Paragraph_Count);
Camera_Ready_Copy : Camera_Ready_Copy_Type :=
(others => (others => Ada.Strings.Wide_Space));
TC_Finished_Product : Camera_Ready_Copy_Type :=
( 1 => Equiv("Ada is a programming language designed "),
2 => Equiv("to support long-lived, reliable software"),
3 => Equiv(" systems. "),
4 => Equiv("Go with Ada! "));
-----
procedure Enter_Text_Into_Document (Document : in out Document_Type) is
begin
-- Fill in both "paragraphs" of the document. Each unbounded wide
-- string functions as an individual paragraph, containing an
-- unspecified number of characters.
-- Use a variety of different unbounded wide string subprograms to
-- load the data.
Document(1) :=
ASW.To_Unbounded_Wide_String(Equiv("Ada is a language"));
-- Insert the word "programming" prior to "language".
Document(1) :=
ASW.Insert(Document(1),
ASW.Index(Document(1),
Equiv("language")),
ASW.To_Wide_String(Equiv("progra") & -- Wd Str &
ASW."*"(2,Equiv('m')) & -- Wd Unbd &
Equiv("ing "))); -- Wd Str
-- Overwrite the word "language" with "language" + additional text.
Document(1) :=
ASW.Overwrite(Document(1),
ASW.Index(Document(1),
ASW.To_Wide_String(
ASW.Tail(Document(1), 8, Equiv(' '))),
Ada.Strings.Backward),
Equiv("language designed to support long-lifed"));
-- Replace the word "lifed" with "lived".
Document(1) :=
ASW.Replace_Slice(Document(1),
ASW.Index(Document(1), Equiv("lifed")),
ASW.Length(Document(1)),
Equiv("lived"));
-- Overwrite the word "lived" with "lived" + additional text.
Document(1) :=
ASW.Overwrite(Document(1),
ASW.Index(Document(1),
ASW.To_Wide_String
(ASW.Tail(Document(1), 5, Equiv(' '))),
Ada.Strings.Backward),
Equiv("lived, reliable software systems."));
-- Use several of the overloaded versions of "&" to form this
-- unbounded wide string.
Document(2) := Equiv('G') &
ASW.To_Unbounded_Wide_String(Equiv("o ")) &
ASW.To_Unbounded_Wide_String(Equiv("with")) &
Equiv(' ') &
Equiv("Ada!");
end Enter_Text_Into_Document;
-----
procedure Create_Camera_Ready_Copy
(Document : in Document_Type;
Camera_Copy : out Camera_Ready_Copy_Type) is
begin
-- Break the unbounded wide strings into fixed lengths.
-- Search the first unbounded wide string for portions of text that
-- are less than or equal to the length of a wide string in the
-- Camera_Ready_Copy_Type object.
Camera_Copy(1) := -- Take characters 1-39,
ASW.Slice(Document(1), -- and append a blank space.
1,
ASW.Index(ASW.To_Unbounded_Wide_String
(ASW.Slice(Document(1),
1,
Line_Length)),
Ada.Strings.Wide_Maps.To_Set(Equiv(' ')),
Ada.Strings.Inside,
Ada.Strings.Backward)) & Equiv(' ');
Camera_Copy(2) := -- Take characters 40-79.
ASW.Slice(Document(1),
40,
(ASW.Index_Non_Blank -- Should return 79
(ASW.To_Unbounded_Wide_String
(ASW.Slice(Document(1), -- Slice (40..79)
40,
79)),
Ada.Strings.Backward) + 39)); -- Increment since
-- this slice starts
-- at 40.
Camera_Copy(3)(1..9) := ASW.Slice(Document(1), -- Characters 80-88
80,
ASW.Length(Document(1)));
-- Break the second unbounded wide string into the appropriate
-- length. It is only twelve characters in length, so the entire
-- unbounded wide string will be placed on one string of the output
-- object.
Camera_Copy(4)(1..ASW.Length(Document(2))) :=
ASW.To_Wide_String(ASW.Head(Document(2),
ASW.Length(Document(2))));
end Create_Camera_Ready_Copy;
-----
function Valid_Proofread (Draft, Master : Camera_Ready_Copy_Type)
return Boolean is
begin
-- Evaluate wide strings for equality, using the operators defined
-- in package Ada.Strings.Wide_Unbounded. The less than/greater
-- than or equal comparisons should evaluate to "equals => True".
if ASW.To_Unbounded_Wide_String(Draft(1)) = -- "="(WUnb,WUnb)
ASW.To_Unbounded_Wide_String(Master(1)) and
ASW.To_Unbounded_Wide_String(Draft(2)) <= -- "<="(WUnb,WUnb)
ASW.To_Unbounded_Wide_String(Master(2)) and
ASW.To_Unbounded_Wide_String(Draft(3)) >= -- ">="(WUnb,WUnb)
ASW.To_Unbounded_Wide_String(Master(3)) and
ASW.To_Unbounded_Wide_String(Draft(4)) = -- "="(WUnb,WUnb)
ASW.To_Unbounded_Wide_String(Master(4))
then
return True;
else
return False;
end if;
end Valid_Proofread;
-----
begin
-- Enter text into the unbounded wide string paragraphs of the document.
Enter_Text_Into_Document (Pamphlet);
-- Reformat the unbounded wide strings into fixed wide string format.
Create_Camera_Ready_Copy (Document => Pamphlet,
Camera_Copy => Camera_Ready_Copy);
-- Verify the conversion process.
if not Valid_Proofread (Draft => Camera_Ready_Copy,
Master => TC_Finished_Product)
then
Report.Failed ("Incorrect unbounded wide string processing result");
end if;
exception
when others => Report.Failed ("Exception raised in Test_Block");
end Test_Block;
Report.Result;
end CXA4021;