6cbcc54138
* xeinfo.adb: Don't look for revision numbers. * xnmake.adb: Likewise. * xsinfo.adb: Likewise. * xsnames.adb: Likewise. * xtreeprs.adb: Likewise. From-SVN: r50768
77 lines
3.6 KiB
Ada
77 lines
3.6 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNAT COMPILER COMPONENTS --
|
|
-- --
|
|
-- S Y S T E M . V A L _ C H A R --
|
|
-- --
|
|
-- B o d y --
|
|
-- --
|
|
-- --
|
|
-- Copyright (C) 1992,1993,1994 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, 59 Temple Place - Suite 330, Boston, --
|
|
-- MA 02111-1307, 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. --
|
|
-- --
|
|
-- GNAT was originally developed by the GNAT team at New York University. --
|
|
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
|
|
-- --
|
|
------------------------------------------------------------------------------
|
|
|
|
with System.Val_Util; use System.Val_Util;
|
|
|
|
package body System.Val_Char is
|
|
|
|
---------------------
|
|
-- Value_Character --
|
|
---------------------
|
|
|
|
function Value_Character (Str : String) return Character is
|
|
F : Natural;
|
|
L : Natural;
|
|
S : String (Str'Range) := Str;
|
|
|
|
begin
|
|
Normalize_String (S, F, L);
|
|
|
|
-- Accept any single character enclosed in quotes
|
|
|
|
if L - F = 2 and then S (F) = ''' and then S (L) = ''' then
|
|
return Character'Val (Character'Pos (S (F + 1)));
|
|
|
|
-- Check control character cases
|
|
|
|
else
|
|
for C in Character'Val (16#00#) .. Character'Val (16#1F#) loop
|
|
if S (F .. L) = Character'Image (C) then
|
|
return C;
|
|
end if;
|
|
end loop;
|
|
|
|
for C in Character'Val (16#7F#) .. Character'Val (16#9F#) loop
|
|
if S (F .. L) = Character'Image (C) then
|
|
return C;
|
|
end if;
|
|
end loop;
|
|
|
|
raise Constraint_Error;
|
|
end if;
|
|
|
|
end Value_Character;
|
|
|
|
end System.Val_Char;
|