163 lines
6.0 KiB
Ada
163 lines
6.0 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- ADA.STRINGS.WIDE_WIDE_UNBOUNDED.WIDE_WIDE_TEXT_IO --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1997-2009, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Ada.Wide_Wide_Text_IO; use Ada.Wide_Wide_Text_IO;
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package body Ada.Strings.Wide_Wide_Unbounded.Wide_Wide_Text_IO is
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--------------
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-- Get_Line --
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--------------
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function Get_Line return Unbounded_Wide_Wide_String is
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Buffer : Wide_Wide_String (1 .. 1000);
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Last : Natural;
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Str1 : Wide_Wide_String_Access;
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Str2 : Wide_Wide_String_Access;
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Result : Unbounded_Wide_Wide_String;
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begin
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Get_Line (Buffer, Last);
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Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
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while Last = Buffer'Last loop
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Get_Line (Buffer, Last);
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Str2 := new Wide_Wide_String (1 .. Str1'Last + Last);
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Str2 (Str1'Range) := Str1.all;
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Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last);
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Free (Str1);
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Str1 := Str2;
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end loop;
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Result.Reference := Str1;
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Result.Last := Str1'Length;
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return Result;
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end Get_Line;
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function Get_Line
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(File : Ada.Wide_Wide_Text_IO.File_Type) return Unbounded_Wide_Wide_String
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is
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Buffer : Wide_Wide_String (1 .. 1000);
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Last : Natural;
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Str1 : Wide_Wide_String_Access;
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Str2 : Wide_Wide_String_Access;
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Result : Unbounded_Wide_Wide_String;
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begin
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Get_Line (File, Buffer, Last);
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Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
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while Last = Buffer'Last loop
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Get_Line (File, Buffer, Last);
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Str2 := new Wide_Wide_String (1 .. Str1'Last + Last);
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Str2 (Str1'Range) := Str1.all;
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Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last);
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Free (Str1);
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Str1 := Str2;
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end loop;
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Result.Reference := Str1;
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Result.Last := Str1'Length;
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return Result;
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end Get_Line;
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procedure Get_Line (Item : out Unbounded_Wide_Wide_String) is
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begin
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Get_Line (Current_Input, Item);
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end Get_Line;
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procedure Get_Line
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(File : Ada.Wide_Wide_Text_IO.File_Type;
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Item : out Unbounded_Wide_Wide_String)
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is
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begin
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-- We are going to read into the string that is already there and
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-- allocated. Hopefully it is big enough now, if not, we will extend
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-- it in the usual manner using Realloc_For_Chunk.
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-- Make sure we start with at least 80 characters
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if Item.Reference'Last < 80 then
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Realloc_For_Chunk (Item, 80);
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end if;
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-- Loop to read data, filling current string as far as possible.
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-- Item.Last holds the number of characters read so far.
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Item.Last := 0;
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loop
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Get_Line
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(File,
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Item.Reference (Item.Last + 1 .. Item.Reference'Last),
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Item.Last);
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-- If we hit the end of the line before the end of the buffer, then
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-- we are all done, and the result length is properly set.
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if Item.Last < Item.Reference'Last then
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return;
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end if;
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-- If not enough room, double it and keep reading
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Realloc_For_Chunk (Item, Item.Last);
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end loop;
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end Get_Line;
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---------
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-- Put --
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---------
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procedure Put (U : Unbounded_Wide_Wide_String) is
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begin
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Put (U.Reference (1 .. U.Last));
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end Put;
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procedure Put (File : File_Type; U : Unbounded_Wide_Wide_String) is
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begin
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Put (File, U.Reference (1 .. U.Last));
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end Put;
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--------------
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-- Put_Line --
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--------------
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procedure Put_Line (U : Unbounded_Wide_Wide_String) is
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begin
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Put_Line (U.Reference (1 .. U.Last));
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end Put_Line;
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procedure Put_Line (File : File_Type; U : Unbounded_Wide_Wide_String) is
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begin
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Put_Line (File, U.Reference (1 .. U.Last));
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end Put_Line;
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end Ada.Strings.Wide_Wide_Unbounded.Wide_Wide_Text_IO;
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