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-- FB20A00.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.
--*
--
-- FOUNDATION DESCRIPTION:
-- This test performs a search for the first instance of a specified
-- substring within a specified string, returning boolean result.
-- (Case insensitive analysis) Both the string and the substring are
-- made upper case. Successive slices are taken from the input string
-- and compared with the substring. If a match is found, the search is
-- terminated immediately. The search continues until the last index
-- position from which a substring-length slice can be constructed is
-- passed.
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
--
--!
package FB20A00 is
function Find ( Str : in String ;
Sub : in String ) return Boolean;
end FB20A00;
--=================================================================--
package body FB20A00 is
function Find ( Str : in String ;
Sub : in String ) return Boolean is
New_Str : String (Str'First .. Str'Last);
New_Sub : String (Sub'First .. Sub'Last);
Pos : Integer := Str'First ; -- Character index.
function Upper_Case (Str : in String) return String is
subtype Upper is Character range 'A' .. 'Z' ;
subtype Lower is Character range 'a' .. 'z' ;
Ret : String (Str'First .. Str'Last) ;
Pos : Integer;
begin
for I in Str'Range loop
if ( Str (I) in Lower ) then
Pos := Upper'Pos (Upper'First) +
( Lower'Pos (Str(I)) - Lower'Pos(Lower'First) ) ;
Ret (I) := Upper'Val (Pos) ;
else
Ret (I) := Str (I);
end if ;
end loop ;
return (Ret) ;
end Upper_Case;
begin
New_Str := Upper_Case (Str); -- Convert Str and Sub to upper
New_Sub := Upper_Case (Sub); -- case for comparison.
while ( Pos <= New_Str'Last-New_Sub'Length+1 ) -- Search until no more
and then -- sub-string-length
( New_Str ( Pos .. Pos+New_Sub'Length-1 ) /= New_Sub ) -- slices
-- remain.
loop
Pos := Pos + 1 ;
end loop ;
if ( Pos > New_Str'Last-New_Sub'Length+1 ) then -- Substring not found.
return (False);
else
return (True);
end if ;
end Find;
end FB20A00;
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