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Diffstat (limited to 'gcc/ada/libgnat/a-stobfi.adb')
| -rw-r--r-- | gcc/ada/libgnat/a-stobfi.adb | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/gcc/ada/libgnat/a-stobfi.adb b/gcc/ada/libgnat/a-stobfi.adb new file mode 100644 index 0000000..91edf3f --- /dev/null +++ b/gcc/ada/libgnat/a-stobfi.adb @@ -0,0 +1,120 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- ADA.STRINGS.TEXT_OUTPUT.BASIC_FILES -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2020, 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. -- +-- -- +------------------------------------------------------------------------------ + +pragma Ada_2020; + +with Ada.Strings.Text_Output.Utils; use Ada.Strings.Text_Output.Utils; +package body Ada.Strings.Text_Output.Basic_Files is + use type OS.File_Descriptor; + + function Create_From_FD + (FD : OS.File_Descriptor; + Indent_Amount : Natural; + Chunk_Length : Positive) return File; + -- Create a file from an OS file descriptor + + function Create_From_FD + (FD : OS.File_Descriptor; + Indent_Amount : Natural; + Chunk_Length : Positive) return File + is + begin + if FD = OS.Invalid_FD then + raise Program_Error with OS.Errno_Message; + end if; + return Result : File (Chunk_Length) do + Result.Indent_Amount := Indent_Amount; + Result.Cur_Chunk := Result.Initial_Chunk'Unchecked_Access; + Result.FD := FD; + end return; + end Create_From_FD; + + function Create_File + (Name : String; + Indent_Amount : Natural := Default_Indent_Amount; + Chunk_Length : Positive := Default_Chunk_Length) return File + is + begin + return Create_From_FD + (OS.Create_File (Name, Fmode => OS.Text), + Indent_Amount, Chunk_Length); + end Create_File; + + function Create_New_File + (Name : String; + Indent_Amount : Natural := Default_Indent_Amount; + Chunk_Length : Positive := Default_Chunk_Length) return File + is + begin + return Create_From_FD + (OS.Create_New_File (Name, Fmode => OS.Text), + Indent_Amount, Chunk_Length); + end Create_New_File; + + procedure Close (S : in out File'Class) is + Status : Boolean; + begin + Flush (S); + + if S.FD not in OS.Standout | OS.Standerr then -- Don't close these + OS.Close (S.FD, Status); + if not Status then + raise Program_Error with OS.Errno_Message; + end if; + end if; + end Close; + + overriding procedure Full_Method (S : in out File) renames Flush_Method; + + overriding procedure Flush_Method (S : in out File) is + pragma Assert (S.Cur_Chunk = S.Initial_Chunk'Unchecked_Access); + Res : constant Integer := + OS.Write (S.FD, S.Cur_Chunk.Chars'Address, S.Last); + begin + if Res /= S.Last then + raise Program_Error with OS.Errno_Message; + end if; + S.Last := 0; + end Flush_Method; + + The_Stdout : aliased File := + Create_From_FD (OS.Standout, + Indent_Amount => Default_Indent_Amount, + Chunk_Length => Default_Chunk_Length); + The_Stderr : aliased File := + Create_From_FD (OS.Standerr, + Indent_Amount => Default_Indent_Amount, + Chunk_Length => Default_Chunk_Length); + + function Standard_Output return Sink_Access is (The_Stdout'Access); + function Standard_Error return Sink_Access is (The_Stderr'Access); + +end Ada.Strings.Text_Output.Basic_Files; |