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-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME COMPONENTS --
--- --
--- A D A . S T R I N G S . U N B O U N D E D . T E X T _ I O --
--- --
--- B o d y --
--- --
--- Copyright (C) 1997-2009, 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 Ada.Text_IO; use Ada.Text_IO;
-
-package body Ada.Strings.Unbounded.Text_IO is
-
- --------------
- -- Get_Line --
- --------------
-
- function Get_Line return Unbounded_String is
- Buffer : String (1 .. 1000);
- Last : Natural;
- Str1 : String_Access;
- Str2 : String_Access;
- Result : Unbounded_String;
-
- begin
- Get_Line (Buffer, Last);
- Str1 := new String'(Buffer (1 .. Last));
- while Last = Buffer'Last loop
- Get_Line (Buffer, Last);
- Str2 := new String (1 .. Str1'Last + Last);
- Str2 (Str1'Range) := Str1.all;
- Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last);
- Free (Str1);
- Str1 := Str2;
- end loop;
-
- Result.Reference := Str1;
- Result.Last := Str1'Length;
- return Result;
- end Get_Line;
-
- function Get_Line (File : Ada.Text_IO.File_Type) return Unbounded_String is
- Buffer : String (1 .. 1000);
- Last : Natural;
- Str1 : String_Access;
- Str2 : String_Access;
- Result : Unbounded_String;
-
- begin
- Get_Line (File, Buffer, Last);
- Str1 := new String'(Buffer (1 .. Last));
- while Last = Buffer'Last loop
- Get_Line (File, Buffer, Last);
- Str2 := new String (1 .. Str1'Last + Last);
- Str2 (Str1'Range) := Str1.all;
- Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last);
- Free (Str1);
- Str1 := Str2;
- end loop;
-
- Result.Reference := Str1;
- Result.Last := Str1'Length;
- return Result;
- end Get_Line;
-
- procedure Get_Line (Item : out Unbounded_String) is
- begin
- Get_Line (Current_Input, Item);
- end Get_Line;
-
- procedure Get_Line
- (File : Ada.Text_IO.File_Type;
- Item : out Unbounded_String)
- is
- begin
- -- We are going to read into the string that is already there and
- -- allocated. Hopefully it is big enough now, if not, we will extend
- -- it in the usual manner using Realloc_For_Chunk.
-
- -- Make sure we start with at least 80 characters
-
- if Item.Reference'Last < 80 then
- Realloc_For_Chunk (Item, 80);
- end if;
-
- -- Loop to read data, filling current string as far as possible.
- -- Item.Last holds the number of characters read so far.
-
- Item.Last := 0;
- loop
- Get_Line
- (File,
- Item.Reference (Item.Last + 1 .. Item.Reference'Last),
- Item.Last);
-
- -- If we hit the end of the line before the end of the buffer, then
- -- we are all done, and the result length is properly set.
-
- if Item.Last < Item.Reference'Last then
- return;
- end if;
-
- -- If not enough room, double it and keep reading
-
- Realloc_For_Chunk (Item, Item.Last);
- end loop;
- end Get_Line;
-
- ---------
- -- Put --
- ---------
-
- procedure Put (U : Unbounded_String) is
- begin
- Put (U.Reference (1 .. U.Last));
- end Put;
-
- procedure Put (File : File_Type; U : Unbounded_String) is
- begin
- Put (File, U.Reference (1 .. U.Last));
- end Put;
-
- --------------
- -- Put_Line --
- --------------
-
- procedure Put_Line (U : Unbounded_String) is
- begin
- Put_Line (U.Reference (1 .. U.Last));
- end Put_Line;
-
- procedure Put_Line (File : File_Type; U : Unbounded_String) is
- begin
- Put_Line (File, U.Reference (1 .. U.Last));
- end Put_Line;
-
-end Ada.Strings.Unbounded.Text_IO;