------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . C A L E N D A R . T I M E _ Z O N E S -- -- -- -- B o d y -- -- -- -- Copyright (C) 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, 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ package body Ada.Calendar.Time_Zones is -------------------------- -- Implementation Notes -- -------------------------- -- All operations in this package are target and time representation -- independent, thus only one source file is needed for multiple targets. --------------------- -- UTC_Time_Offset -- --------------------- function UTC_Time_Offset (Date : Time := Clock) return Time_Offset is Offset_L : constant Long_Integer := Time_Zones_Operations.UTC_Time_Offset (Date); Offset : Time_Offset; begin if Offset_L = Invalid_Time_Zone_Offset then raise Unknown_Zone_Error; end if; -- The offset returned by Time_Zones_Operations.UTC_Time_Offset is in -- seconds, the returned value needs to be in minutes. Offset := Time_Offset (Offset_L / 60); -- Validity checks if not Offset'Valid then raise Unknown_Zone_Error; end if; return Offset; end UTC_Time_Offset; end Ada.Calendar.Time_Zones;