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Diffstat (limited to 'gcc-4.8.3/gcc/ada/s-wchwts.adb')
| -rw-r--r-- | gcc-4.8.3/gcc/ada/s-wchwts.adb | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/s-wchwts.adb b/gcc-4.8.3/gcc/ada/s-wchwts.adb new file mode 100644 index 000000000..4902a7f48 --- /dev/null +++ b/gcc-4.8.3/gcc/ada/s-wchwts.adb @@ -0,0 +1,122 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . W C H _ W T S -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2009, 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 3, 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +with System.WCh_Con; use System.WCh_Con; +with System.WCh_Cnv; use System.WCh_Cnv; + +package body System.WCh_WtS is + + ----------------------- + -- Local Subprograms -- + ----------------------- + + procedure Store_UTF_32_Character + (U : UTF_32_Code; + S : out String; + P : in out Integer; + EM : WC_Encoding_Method); + -- Stores the string representation of the wide or wide wide character + -- whose code is given as U, starting at S (P + 1). P is incremented to + -- point to the last character stored. Raises CE if character cannot be + -- stored using the given encoding method. + + ---------------------------- + -- Store_UTF_32_Character -- + ---------------------------- + + procedure Store_UTF_32_Character + (U : UTF_32_Code; + S : out String; + P : in out Integer; + EM : WC_Encoding_Method) + is + procedure Out_Char (C : Character); + pragma Inline (Out_Char); + -- Procedure to increment P and store C at S (P) + + procedure Store_Chars is new UTF_32_To_Char_Sequence (Out_Char); + + -------------- + -- Out_Char -- + -------------- + + procedure Out_Char (C : Character) is + begin + P := P + 1; + S (P) := C; + end Out_Char; + + begin + Store_Chars (U, EM); + end Store_UTF_32_Character; + + --------------------------- + -- Wide_String_To_String -- + --------------------------- + + function Wide_String_To_String + (S : Wide_String; + EM : WC_Encoding_Method) return String + is + R : String (S'First .. S'First + 5 * S'Length); -- worst case length! + RP : Natural; + + begin + RP := R'First - 1; + for SP in S'Range loop + Store_UTF_32_Character (Wide_Character'Pos (S (SP)), R, RP, EM); + end loop; + + return R (R'First .. RP); + end Wide_String_To_String; + + -------------------------------- + -- Wide_Wide_String_To_String -- + -------------------------------- + + function Wide_Wide_String_To_String + (S : Wide_Wide_String; + EM : WC_Encoding_Method) return String + is + R : String (S'First .. S'First + 7 * S'Length); -- worst case length! + RP : Natural; + + begin + RP := R'First - 1; + + for SP in S'Range loop + Store_UTF_32_Character (Wide_Wide_Character'Pos (S (SP)), R, RP, EM); + end loop; + + return R (R'First .. RP); + end Wide_Wide_String_To_String; + +end System.WCh_WtS; |