Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/s-widwch.adb @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
comparison
equal
deleted
inserted
replaced
| 68:561a7518be6b | 111:04ced10e8804 |
|---|---|
| 1 ------------------------------------------------------------------------------ | |
| 2 -- -- | |
| 3 -- GNAT RUN-TIME COMPONENTS -- | |
| 4 -- -- | |
| 5 -- S Y S T E M . W I D _ W C H A R -- | |
| 6 -- -- | |
| 7 -- B o d y -- | |
| 8 -- -- | |
| 9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- | |
| 10 -- -- | |
| 11 -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
| 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
| 17 -- -- | |
| 18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 -- -- | |
| 22 -- You should have received a copy of the GNU General Public License and -- | |
| 23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 -- <http://www.gnu.org/licenses/>. -- | |
| 26 -- -- | |
| 27 -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 28 -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
| 29 -- -- | |
| 30 ------------------------------------------------------------------------------ | |
| 31 | |
| 32 package body System.Wid_WChar is | |
| 33 | |
| 34 -------------------------- | |
| 35 -- Width_Wide_Character -- | |
| 36 -------------------------- | |
| 37 | |
| 38 function Width_Wide_Character | |
| 39 (Lo, Hi : Wide_Character) return Natural | |
| 40 is | |
| 41 W : Natural; | |
| 42 P : Natural; | |
| 43 | |
| 44 begin | |
| 45 W := 0; | |
| 46 for C in Lo .. Hi loop | |
| 47 P := Wide_Character'Pos (C); | |
| 48 | |
| 49 -- Here if we find a character in wide character range | |
| 50 -- Width is max value (12) for Hex_hhhhhhhh | |
| 51 | |
| 52 if P > 16#FF# then | |
| 53 return 12; | |
| 54 | |
| 55 -- If we are in character range then use length of character image | |
| 56 | |
| 57 else | |
| 58 declare | |
| 59 S : constant String := Character'Image (Character'Val (P)); | |
| 60 begin | |
| 61 W := Natural'Max (W, S'Length); | |
| 62 end; | |
| 63 end if; | |
| 64 end loop; | |
| 65 | |
| 66 return W; | |
| 67 end Width_Wide_Character; | |
| 68 | |
| 69 ------------------------------- | |
| 70 -- Width_Wide_Wide_Character -- | |
| 71 ------------------------------- | |
| 72 | |
| 73 function Width_Wide_Wide_Character | |
| 74 (Lo, Hi : Wide_Wide_Character) return Natural | |
| 75 is | |
| 76 W : Natural; | |
| 77 P : Natural; | |
| 78 | |
| 79 begin | |
| 80 W := 0; | |
| 81 for C in Lo .. Hi loop | |
| 82 P := Wide_Wide_Character'Pos (C); | |
| 83 | |
| 84 -- Here if we find a character in wide wide character range. | |
| 85 -- Width is max value (12) for Hex_hhhhhhhh | |
| 86 | |
| 87 if P > 16#FF# then | |
| 88 W := 12; | |
| 89 | |
| 90 -- If we are in character range then use length of character image | |
| 91 | |
| 92 else | |
| 93 declare | |
| 94 S : constant String := Character'Image (Character'Val (P)); | |
| 95 begin | |
| 96 W := Natural'Max (W, S'Length); | |
| 97 end; | |
| 98 end if; | |
| 99 end loop; | |
| 100 | |
| 101 return W; | |
| 102 end Width_Wide_Wide_Character; | |
| 103 | |
| 104 end System.Wid_WChar; |