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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- A D A . W I D E _ T E X T _ I O . C _ S T R E A M S --
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6 -- --
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7 -- B o d y --
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8 -- --
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131
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9 -- Copyright (C) 1992-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 with Interfaces.C_Streams; use Interfaces.C_Streams;
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33 with System.File_IO;
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34 with System.File_Control_Block;
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35 with Ada.Unchecked_Conversion;
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36
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37 package body Ada.Wide_Text_IO.C_Streams is
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38
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39 package FIO renames System.File_IO;
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40 package FCB renames System.File_Control_Block;
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41
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42 subtype AP is FCB.AFCB_Ptr;
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43
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44 function To_FCB is new Ada.Unchecked_Conversion (File_Mode, FCB.File_Mode);
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45
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46 --------------
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47 -- C_Stream --
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48 --------------
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49
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50 function C_Stream (F : File_Type) return FILEs is
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51 begin
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52 FIO.Check_File_Open (AP (F));
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53 return F.Stream;
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54 end C_Stream;
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55
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56 ----------
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57 -- Open --
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58 ----------
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59
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60 procedure Open
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61 (File : in out File_Type;
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62 Mode : File_Mode;
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63 C_Stream : FILEs;
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64 Form : String := "";
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65 Name : String := "")
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66 is
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67 Dummy_File_Control_Block : Wide_Text_AFCB;
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68 pragma Warnings (Off, Dummy_File_Control_Block);
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69 -- Yes, we know this is never assigned a value, only the tag
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70 -- is used for dispatching purposes, so that's expected.
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71
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72 begin
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73 FIO.Open (File_Ptr => AP (File),
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74 Dummy_FCB => Dummy_File_Control_Block,
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75 Mode => To_FCB (Mode),
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76 Name => Name,
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77 Form => Form,
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78 Amethod => 'W',
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79 Creat => False,
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80 Text => True,
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81 C_Stream => C_Stream);
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82
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83 end Open;
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84
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85 end Ada.Wide_Text_IO.C_Streams;
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