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Diffstat (limited to 'gcc-4.3.1/gcc/ada/a-slcain.adb')
| -rw-r--r-- | gcc-4.3.1/gcc/ada/a-slcain.adb | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/gcc-4.3.1/gcc/ada/a-slcain.adb b/gcc-4.3.1/gcc/ada/a-slcain.adb new file mode 100644 index 000000000..b87a48095 --- /dev/null +++ b/gcc-4.3.1/gcc/ada/a-slcain.adb @@ -0,0 +1,74 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT LIBRARY COMPONENTS -- +-- -- +-- ADA.STRINGS.LESS_CASE_INSENSITIVE -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2004-2006, Free Software Foundation, Inc. -- +-- -- +-- 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; |