git://gcc.gnu.org / gcc.git / blame
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1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUN-TIME COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- A D A . S E Q U E N T I A L _ I O . C _ S T R E A M S -- | |
| 6 | -- -- | |
| 7 | -- B o d y -- | |
| 8 | -- -- | |
| fbf5a39b | 9 | -- Copyright (C) 1992-2002 Free Software Foundation, Inc. -- |
| d23b8f57 RK |
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 2, 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. See the GNU General Public License -- | |
| 17 | -- for more details. You should have received a copy of the GNU General -- | |
| 18 | -- Public License distributed with GNAT; see file COPYING. If not, write -- | |
| 19 | -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- | |
| 20 | -- MA 02111-1307, USA. -- | |
| 21 | -- -- | |
| 22 | -- As a special exception, if other files instantiate generics from this -- | |
| 23 | -- unit, or you link this unit with other files to produce an executable, -- | |
| 24 | -- this unit does not by itself cause the resulting executable to be -- | |
| 25 | -- covered by the GNU General Public License. This exception does not -- | |
| 26 | -- however invalidate any other reasons why the executable file might be -- | |
| 27 | -- covered by the GNU Public License. -- | |
| 28 | -- -- | |
| 29 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 30 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
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31 | -- -- |
| 32 | ------------------------------------------------------------------------------ | |
| 33 | ||
| 34 | with Interfaces.C_Streams; use Interfaces.C_Streams; | |
| 35 | with System.File_IO; | |
| 36 | with System.File_Control_Block; | |
| 37 | with System.Sequential_IO; | |
| 38 | with Unchecked_Conversion; | |
| 39 | ||
| 40 | package body Ada.Sequential_IO.C_Streams is | |
| 41 | ||
| 42 | package FIO renames System.File_IO; | |
| 43 | package FCB renames System.File_Control_Block; | |
| 44 | package SIO renames System.Sequential_IO; | |
| 45 | ||
| 46 | subtype AP is FCB.AFCB_Ptr; | |
| 47 | ||
| 48 | function To_FCB is new Unchecked_Conversion (File_Mode, FCB.File_Mode); | |
| 49 | ||
| 50 | -------------- | |
| 51 | -- C_Stream -- | |
| 52 | -------------- | |
| 53 | ||
| 54 | function C_Stream (F : File_Type) return FILEs is | |
| 55 | begin | |
| 56 | FIO.Check_File_Open (AP (F)); | |
| 57 | return F.Stream; | |
| 58 | end C_Stream; | |
| 59 | ||
| 60 | ---------- | |
| 61 | -- Open -- | |
| 62 | ---------- | |
| 63 | ||
| 64 | procedure Open | |
| 65 | (File : in out File_Type; | |
| fbf5a39b AC |
66 | Mode : File_Mode; |
| 67 | C_Stream : FILEs; | |
| 68 | Form : String := ""; | |
| 69 | Name : String := "") | |
| d23b8f57 | 70 | is |
| fbf5a39b AC |
71 | Dummy_File_Control_Block : SIO.Sequential_AFCB; |
| 72 | pragma Warnings (Off, Dummy_File_Control_Block); | |
| 73 | -- Yes, we know this is never assigned a value, only the tag | |
| 74 | -- is used for dispatching purposes, so that's expected. | |
| d23b8f57 RK |
75 | |
| 76 | begin | |
| 77 | FIO.Open (File_Ptr => AP (File), | |
| fbf5a39b | 78 | Dummy_FCB => Dummy_File_Control_Block, |
| d23b8f57 | 79 | Mode => To_FCB (Mode), |
| fbf5a39b | 80 | Name => Name, |
| d23b8f57 RK |
81 | Form => Form, |
| 82 | Amethod => 'Q', | |
| 83 | Creat => False, | |
| 84 | Text => False, | |
| 85 | C_Stream => C_Stream); | |
| 86 | end Open; | |
| 87 | ||
| 88 | end Ada.Sequential_IO.C_Streams; |