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-- CXA4010.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.Unbounded
-- are available, and that they produce correct results. Specifically,
-- check the subprograms To_String, To_Unbounded_String, Insert, "&",
-- "*", Length, Slice, Replace_Slice, Overwrite, Index, Index_Non_Blank,
-- Head, Tail, and "=", "<=", ">=".
--
-- TEST DESCRIPTION:
-- This test demonstrates the uses of many of the subprograms defined
-- in package Ada.Strings.Unbounded for use with unbounded strings.
-- The test simulates how unbounded 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 uses a large number of the subprograms provided
-- by package Ada.Strings.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.Strings.Maps;
with Ada.Strings.Unbounded;
procedure CXA4010 is
begin
Report.Test ("CXA4010", "Check that the subprograms defined in " &
"package Ada.Strings.Unbounded are available, " &
"and that they produce correct results");
Test_Block:
declare
package ASUnb renames Ada.Strings.Unbounded;
use type ASUnb.Unbounded_String;
use Ada.Strings;
Pamphlet_Paragraph_Count : constant := 2;
Lines : constant := 4;
Line_Length : constant := 40;
type Document_Type is array (Positive range <>)
of ASUnb.Unbounded_String;
type Camera_Ready_Copy_Type is array (1..Lines)
of String (1..Line_Length);
Pamphlet : Document_Type (1..Pamphlet_Paragraph_Count);
Camera_Ready_Copy : Camera_Ready_Copy_Type :=
(others => (others => Ada.Strings.Space));
TC_Finished_Product : Camera_Ready_Copy_Type :=
( 1 => "Ada is a programming language designed ",
2 => "to support long-lived, reliable software",
3 => " systems. ",
4 => "Go with Ada! ");
-----
procedure Enter_Text_Into_Document (Document : in out Document_Type) is
begin
-- Fill in both "paragraphs" of the document. Each unbounded string
-- functions as an individual paragraph, containing an unspecified
-- number of characters.
-- Use a variety of different unbounded string subprograms to load
-- the data.
Document(1) := ASUnb.To_Unbounded_String("Ada is a language");
-- Insert the word "programming" prior to "language".
Document(1) :=
ASUnb.Insert(Document(1),
ASUnb.Index(Document(1),
"language"),
ASUnb.To_String("progra" & -- Str &
ASUnb."*"(2,'m') & -- Unbd &
"ing ")); -- Str
-- Overwrite the word "language" with "language" + additional text.
Document(1) :=
ASUnb.Overwrite(Document(1),
ASUnb.Index(Document(1),
ASUnb.To_String(
ASUnb.Tail(Document(1), 8, ' ')),
Ada.Strings.Backward),
"language designed to support long-lifed");
-- Replace the word "lifed" with "lived".
Document(1) :=
ASUnb.Replace_Slice(Document(1),
ASUnb.Index(Document(1), "lifed"),
ASUnb.Length(Document(1)),
"lived");
-- Overwrite the word "lived" with "lived" + additional text.
Document(1) :=
ASUnb.Overwrite(Document(1),
ASUnb.Index(Document(1),
ASUnb.To_String(
ASUnb.Tail(Document(1), 5, ' ')),
Ada.Strings.Backward),
"lived, reliable software systems.");
-- Use several of the overloaded versions of "&" to form this
-- unbounded string.
Document(2) := 'G' &
ASUnb.To_Unbounded_String("o ") &
ASUnb.To_Unbounded_String("with") &
' ' &
"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 strings into fixed lengths.
-- Search the first unbounded string for portions of text that
-- are less than or equal to the length of a string in the
-- Camera_Ready_Copy_Type object.
Camera_Copy(1) := -- Take characters 1-39,
ASUnb.Slice(Document(1), -- and append a blank space.
1,
ASUnb.Index(ASUnb.To_Unbounded_String(
ASUnb.Slice(Document(1),
1,
Line_Length)),
Ada.Strings.Maps.To_Set(' '),
Ada.Strings.Inside,
Ada.Strings.Backward)) & ' ';
Camera_Copy(2) := -- Take characters 40-79.
ASUnb.Slice(Document(1),
40,
(ASUnb.Index_Non_Blank -- Should return 79
(ASUnb.To_Unbounded_String
(ASUnb.Slice(Document(1), -- Slice (40..79)
40,
79)),
Ada.Strings.Backward) + 39)); -- Increment since
-- this slice starts
-- at 40.
Camera_Copy(3)(1..9) := ASUnb.Slice(Document(1), -- Characters 80-88
80,
ASUnb.Length(Document(1)));
-- Break the second unbounded string into the appropriate length.
-- It is only twelve characters in length, so the entire unbounded
-- string will be placed on one string of the output object.
Camera_Copy(4)(1..ASUnb.Length(Document(2))) :=
ASUnb.To_String(ASUnb.Head(Document(2),
ASUnb.Length(Document(2))));
end Create_Camera_Ready_Copy;
-----
function Valid_Proofread (Draft, Master : Camera_Ready_Copy_Type)
return Boolean is
begin
-- Evaluate strings for equality, using the operators defined in
-- package Ada.Strings.Unbounded. The less than/greater than or
-- equal comparisons should evaluate to "equals => True".
if ASUnb.To_Unbounded_String(Draft(1)) = -- "="(Unb,Unb)
ASUnb.To_Unbounded_String(Master(1)) and
ASUnb.To_Unbounded_String(Draft(2)) <= -- "<="(Unb,Unb)
ASUnb.To_Unbounded_String(Master(2)) and
ASUnb.To_Unbounded_String(Draft(3)) >= -- ">="(Unb,Unb)
ASUnb.To_Unbounded_String(Master(3)) and
ASUnb.To_Unbounded_String(Draft(4)) = -- "="(Unb,Unb)
ASUnb.To_Unbounded_String(Master(4))
then
return True;
else
return False;
end if;
end Valid_Proofread;
-----
begin
-- Enter text into the unbounded string paragraphs of the document.
Enter_Text_Into_Document (Pamphlet);
-- Reformat the unbounded strings into fixed 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 string processing result");
end if;
exception
when others => Report.Failed ("Exception raised in Test_Block");
end Test_Block;
Report.Result;
end CXA4010;
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