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Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-wwdcha.adb')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/s-wwdcha.adb | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/gcc-4.2.1/gcc/ada/s-wwdcha.adb b/gcc-4.2.1/gcc/ada/s-wwdcha.adb new file mode 100644 index 000000000..3580a0142 --- /dev/null +++ b/gcc-4.2.1/gcc/ada/s-wwdcha.adb @@ -0,0 +1,95 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . W W D _ C H A R -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2005, 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. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +package body System.WWd_Char is + + -------------------------- + -- Wide_Width_Character -- + -------------------------- + + function Wide_Width_Character (Lo, Hi : Character) return Natural is + W : Natural; + + begin + W := 0; + for C in Lo .. Hi loop + -- For Character range, use length of image + + if Character'Pos (C) < 256 then + declare + S : constant Wide_String := Character'Wide_Image (C); + begin + W := Natural'Max (W, S'Length); + end; + + -- For wide character, always max out at 12 (Hex_hhhhhhhh) + + else + return 12; + end if; + end loop; + + return W; + end Wide_Width_Character; + + ------------------------------- + -- Wide_Wide_Width_Character -- + ------------------------------- + + function Wide_Wide_Width_Character (Lo, Hi : Character) return Natural is + W : Natural; + + begin + W := 0; + for C in Lo .. Hi loop + + -- For Character range, use length of image + + if Character'Pos (C) < 256 then + declare + S : constant String := Character'Image (C); + begin + W := Natural'Max (W, S'Length); + end; + + -- For wide character, always max out at 12 (Hex_hhhhhhhh) + + else + return 12; + end if; + end loop; + + return W; + end Wide_Wide_Width_Character; + +end System.WWd_Char; |