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1996-09-28
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3KB
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71 lines
------------------------------------------------------------------------------
-- --
-- GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . S T R I N G _ O P S --
-- --
-- B o d y --
-- --
-- $Revision: 1.4 $ --
-- --
-- Copyright (c) 1992,1993,1994 NYU, All Rights Reserved --
-- --
-- The GNAT library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU Library General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) any --
-- later version. The GNAT library is distributed in the hope that it will --
-- be useful, but WITHOUT ANY WARRANTY; without even the implied warranty --
-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- Library General Public License for more details. You should have --
-- received a copy of the GNU Library General Public License along with --
-- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
-- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
package body System.String_Ops is
----------------
-- Str_Concat --
----------------
function Str_Concat (X, Y : String) return String is
begin
if X'Length <= 0 then
return Y;
else
declare
L : constant Natural := X'Length + Y'Length;
R : String (X'First .. X'First + L - 1);
begin
R (X'Range) := X;
R (X'First + X'Length .. R'Last) := Y;
return R;
end;
end if;
end Str_Concat;
---------------
-- Str_Equal --
---------------
function Str_Equal (A, B : String) return Boolean is
begin
if A'Length /= B'Length then
return False;
else
for J in A'Range loop
if A (J) /= B (J + (B'First - A'First)) then
return False;
end if;
end loop;
return True;
end if;
end Str_Equal;
end System.String_Ops;