| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT LIBRARY COMPONENTS -- |
| -- -- |
| -- ADA.STRINGS.LESS_CASE_INSENSITIVE -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2004-2005, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- This unit was originally developed by Matthew J Heaney. -- |
| ------------------------------------------------------------------------------ |
| |
| with Ada.Characters.Handling; use Ada.Characters.Handling; |
| |
| function Ada.Strings.Less_Case_Insensitive |
| (Left, Right : String) return Boolean |
| is |
| LI : Integer := Left'First; |
| RI : Integer := Right'First; |
| |
| LC, RC : Character; |
| |
| begin |
| if LI > Left'Last then |
| return RI <= Right'Last; |
| end if; |
| |
| if RI > Right'Last then |
| return False; |
| end if; |
| |
| loop |
| LC := To_Lower (Left (LI)); |
| RC := To_Lower (Right (RI)); |
| |
| if LC < RC then |
| return True; |
| end if; |
| |
| if LC > RC then |
| return False; |
| end if; |
| |
| if LI = Left'Last then |
| return RI < Right'Last; |
| end if; |
| |
| if RI = Right'Last then |
| return False; |
| end if; |
| |
| LI := LI + 1; |
| RI := RI + 1; |
| end loop; |
| end Ada.Strings.Less_Case_Insensitive; |
