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1 12 jlechner 
------------------------------------------------------------------------------
2 
--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--         A D A . W I D E _ T E X T _ I O . D E C I M A L _ A U X          --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--          Copyright (C) 1992-2005, Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
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-- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
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-- Boston, MA 02110-1301, USA.                                              --
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--                                                                          --
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-- As a special exception,  if other files  instantiate  generics from this --
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-- unit, or you link  this unit with other files  to produce an executable, --
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-- this  unit  does not  by itself cause  the resulting  executable  to  be --
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-- covered  by the  GNU  General  Public  License.  This exception does not --
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-- however invalidate  any other reasons why  the executable file  might be --
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-- covered by the  GNU Public License.                                      --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
33 
 
34 
with Ada.Wide_Text_IO.Generic_Aux; use Ada.Wide_Text_IO.Generic_Aux;
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with Ada.Wide_Text_IO.Float_Aux;   use Ada.Wide_Text_IO.Float_Aux;
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with System.Img_Dec; use System.Img_Dec;
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with System.Img_LLD; use System.Img_LLD;
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with System.Val_Dec; use System.Val_Dec;
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with System.Val_LLD; use System.Val_LLD;
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package body Ada.Wide_Text_IO.Decimal_Aux is
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   -------------
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   -- Get_Dec --
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   -------------
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   function Get_Dec
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     (File   : File_Type;
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      Width  : Field;
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      Scale  : Integer)
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      return   Integer
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   is
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      Buf  : String (1 .. Field'Last);
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      Ptr  : aliased Integer;
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      Stop : Integer := 0;
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      Item : Integer;
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   begin
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      if Width /= 0 then
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         Load_Width (File, Width, Buf, Stop);
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         String_Skip (Buf, Ptr);
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      else
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         Load_Real (File, Buf, Stop);
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         Ptr := 1;
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      end if;
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      Item := Scan_Decimal (Buf, Ptr'Access, Stop, Scale);
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      Check_End_Of_Field (Buf, Stop, Ptr, Width);
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      return Item;
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   end Get_Dec;
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   -------------
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   -- Get_LLD --
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   -------------
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   function Get_LLD
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     (File   : File_Type;
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      Width  : Field;
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      Scale  : Integer)
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      return   Long_Long_Integer
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   is
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      Buf  : String (1 .. Field'Last);
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      Ptr  : aliased Integer;
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      Stop : Integer := 0;
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      Item : Long_Long_Integer;
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   begin
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      if Width /= 0 then
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         Load_Width (File, Width, Buf, Stop);
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         String_Skip (Buf, Ptr);
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      else
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         Load_Real (File, Buf, Stop);
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         Ptr := 1;
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      end if;
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      Item := Scan_Long_Long_Decimal (Buf, Ptr'Access, Stop, Scale);
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      Check_End_Of_Field (Buf, Stop, Ptr, Width);
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      return Item;
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   end Get_LLD;
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   --------------
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   -- Gets_Dec --
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   --------------
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   function Gets_Dec
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     (From  : String;
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      Last  : access Positive;
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      Scale : Integer)
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      return  Integer
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   is
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      Pos  : aliased Integer;
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      Item : Integer;
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   begin
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      String_Skip (From, Pos);
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      Item := Scan_Decimal (From, Pos'Access, From'Last, Scale);
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      Last.all := Pos - 1;
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      return Item;
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   exception
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      when Constraint_Error =>
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         Last.all := Pos - 1;
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         raise Data_Error;
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   end Gets_Dec;
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   --------------
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   -- Gets_LLD --
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   --------------
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   function Gets_LLD
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     (From  : String;
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      Last  : access Positive;
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      Scale : Integer)
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      return  Long_Long_Integer
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   is
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      Pos  : aliased Integer;
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      Item : Long_Long_Integer;
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   begin
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      String_Skip (From, Pos);
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      Item := Scan_Long_Long_Decimal (From, Pos'Access, From'Last, Scale);
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      Last.all := Pos - 1;
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      return Item;
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   exception
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      when Constraint_Error =>
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         Last.all := Pos - 1;
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         raise Data_Error;
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   end Gets_LLD;
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   -------------
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   -- Put_Dec --
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   -------------
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   procedure Put_Dec
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     (File  : File_Type;
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      Item  : Integer;
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      Fore  : Field;
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      Aft   : Field;
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      Exp   : Field;
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      Scale : Integer)
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   is
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      Buf : String (1 .. Field'Last);
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      Ptr : Natural := 0;
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   begin
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      Set_Image_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
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      Put_Item (File, Buf (1 .. Ptr));
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   end Put_Dec;
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   -------------
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   -- Put_LLD --
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   -------------
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178 
   procedure Put_LLD
179 
     (File  : File_Type;
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      Item  : Long_Long_Integer;
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      Fore  : Field;
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      Aft   : Field;
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      Exp   : Field;
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      Scale : Integer)
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   is
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      Buf : String (1 .. Field'Last);
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      Ptr : Natural := 0;
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189 
   begin
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      Set_Image_Long_Long_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
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      Put_Item (File, Buf (1 .. Ptr));
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   end Put_LLD;
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   --------------
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   -- Puts_Dec --
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   --------------
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   procedure Puts_Dec
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     (To    : out String;
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      Item  : Integer;
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      Aft   : Field;
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      Exp   : Field;
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      Scale : Integer)
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   is
205 
      Buf  : String (1 .. Field'Last);
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      Fore : Integer;
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      Ptr  : Natural := 0;
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209 
   begin
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      if Exp = 0 then
211 
         Fore := To'Length - 1 - Aft;
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      else
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         Fore := To'Length - 2 - Aft - Exp;
214 
      end if;
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216 
      if Fore < 1 then
217 
         raise Layout_Error;
218 
      end if;
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220 
      Set_Image_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
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222 
      if Ptr > To'Length then
223 
         raise Layout_Error;
224 
      else
225 
         To := Buf (1 .. Ptr);
226 
      end if;
227 
   end Puts_Dec;
228 
 
229 
   --------------
230 
   -- Puts_Dec --
231 
   --------------
232 
 
233 
   procedure Puts_LLD
234 
     (To    : out String;
235 
      Item  : Long_Long_Integer;
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      Aft   : Field;
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      Exp   : Field;
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      Scale : Integer)
239 
   is
240 
      Buf  : String (1 .. Field'Last);
241 
      Fore : Integer;
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      Ptr  : Natural := 0;
243 
 
244 
   begin
245 
      if Exp = 0 then
246 
         Fore := To'Length - 1 - Aft;
247 
      else
248 
         Fore := To'Length - 2 - Aft - Exp;
249 
      end if;
250 
 
251 
      if Fore < 1 then
252 
         raise Layout_Error;
253 
      end if;
254 
 
255 
      Set_Image_Long_Long_Decimal (Item, Buf, Ptr, Scale, Fore, Aft, Exp);
256 
 
257 
      if Ptr > To'Length then
258 
         raise Layout_Error;
259 
      else
260 
         To := Buf (1 .. Ptr);
261 
      end if;
262 
   end Puts_LLD;
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end Ada.Wide_Text_IO.Decimal_Aux;

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