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-- CXA4002.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.Fixed are
-- available, and that they produce correct results. Specifically,
-- check the subprograms Index, "*" (string constructor function),
-- Count, Trim, and Replace_Slice.
--
-- TEST DESCRIPTION:
-- This test demonstrates how certain Fixed string functions are used
-- to eliminate specific substrings from portions of text. A procedure
-- is defined that will take as parameters a source string along with
-- a substring that is to be completely removed from the source string.
-- The source string is parsed using the Index function, and any substring
-- slices are replaced in the source string by a series of X's (based on
-- the length of the substring.)
-- Three lines of text are provided to this procedure, and the resulting
-- substitutions are compared with expected results to validate the
-- string processing.
-- A global accumulator is updated with the number of occurrences of the
-- substring in the source string.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
--
--!
with Ada.Strings;
with Ada.Strings.Fixed;
with Ada.Strings.Maps;
with Report;
procedure CXA4002 is
begin
Report.Test ("CXA4002", "Check that the subprograms defined in package " &
"Ada.Strings.Fixed are available, and that " &
"they produce correct results");
Test_Block:
declare
TC_Total : Natural := 0;
Number_Of_Lines : constant := 3;
type Restricted_Words_Array_Type is array (1..10) of String (1..10);
Restricted_Words : Restricted_Words_Array_Type :=
(" platoon", " marines ", " Marines ",
"north ", "south ", " east",
" beach ", " airport", "airfield ",
" road ");
subtype Line_Of_Text_Type is String(1..25);
type Page_Of_Text_Type is array (1..Number_Of_Lines)
of Line_Of_Text_Type;
Text_Page : Page_Of_Text_Type := ("The platoon of Marines ",
"moved south on the south ",
"road to the airfield. ");
TC_Revised_Line_1 : constant String := "The XXXXXXX of XXXXXXX ";
TC_Revised_Line_2 : constant String := "moved XXXXX on the XXXXX ";
TC_Revised_Line_3 : constant String := "XXXX to the XXXXXXXX. ";
---
procedure Censor (Source_String : in out String;
Pattern_String : in String) is
-- Create a replacement string that is the same length as the
-- pattern string being removed.
Replacement : constant String := -- "*"
Ada.Strings.Fixed."*"(Pattern_String'Length, 'X');
Going : Ada.Strings.Direction := Ada.Strings.Forward;
Map : constant Ada.Strings.Maps.Character_Mapping :=
Ada.Strings.Maps.Identity;
Start_Pos,
Index : Natural := Source_String'First;
begin -- Censor
-- Accumulate count of total replacement operations.
TC_Total := TC_Total + -- Count
Ada.Strings.Fixed.Count (Source => Source_String,
Pattern => Pattern_String,
Mapping => Map);
loop
Index := Ada.Strings.Fixed.Index -- Index
(Source_String(Start_Pos..Source_String'Last),
Pattern_String,
Going,
Map);
exit when Index = 0; -- No matches, exit loop.
-- if a match was found, modify the substring.
Ada.Strings.Fixed.Replace_Slice -- Replace_Slice
(Source_String,
Index,
Index + Pattern_String'Length - 1,
Replacement);
Start_Pos := Index + Pattern_String'Length;
end loop;
end Censor;
begin
-- Invoke Censor subprogram to cleanse text.
-- Loop through each line of text, and check for the presence of each
-- restricted word.
-- Use the Trim function to eliminate leading or trailing blanks from
-- the restricted word parameters.
for Line in 1..Number_Of_Lines loop
for Word in Restricted_Words'Range loop
Censor (Text_Page(Line),
Ada.Strings.Fixed.Trim(Restricted_Words(Word), -- Trim
Ada.Strings.Both));
end loop;
end loop;
-- Validate results.
if TC_Total /= 6 then
Report.Failed ("Incorrect number of substitutions performed");
end if;
if Text_Page(1) /= TC_Revised_Line_1 then
Report.Failed ("Incorrect substitutions on Line 1");
end if;
if Text_Page(2) /= TC_Revised_Line_2 then
Report.Failed ("Incorrect substitutions on Line 2");
end if;
if Text_Page(3) /= TC_Revised_Line_3 then
Report.Failed ("Incorrect substitutions on Line 3");
end if;
exception
when others => Report.Failed ("Exception raised in Test_Block");
end Test_Block;
Report.Result;
end CXA4002;
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