[thirdparty/gcc.git] / gcc / ada / a-suteio.adb

------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUNTIME 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) 1997-2005 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 2,  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.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
-- MA 02111-1307, USA.                                                      --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
-- this  unit  does not  by itself cause  the resulting  executable  to  be --
-- covered  by the  GNU  General  Public  License.  This exception does not --
-- however invalidate  any other reasons why  the executable file  might be --
-- covered by the  GNU Public License.                                      --
--                                                                          --
-- 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'(Str1.all & 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'(Str1.all & 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;
Commit	Line	Data
d23b8f57 RK	1	------------------------------------------------------------------------------
	2	-- --
	3	-- GNAT RUNTIME COMPONENTS --
	4	-- --
	5	-- 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 --
	6	-- --
	7	-- B o d y --
	8	-- --
82c80734	9	-- Copyright (C) 1997-2005 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. --
d23b8f57 RK	31	-- --
	32	------------------------------------------------------------------------------
	33
798a9055	34	with Ada.Text_IO; use Ada.Text_IO;
d23b8f57 RK	35
	36	package body Ada.Strings.Unbounded.Text_IO is
	37
	38	--------------
	39	-- Get_Line --
	40	--------------
	41
	42	function Get_Line return Unbounded_String is
	43	Buffer : String (1 .. 1000);
	44	Last : Natural;
	45	Str1 : String_Access;
	46	Str2 : String_Access;
	47	Result : Unbounded_String;
	48
	49	begin
	50	Get_Line (Buffer, Last);
	51	Str1 := new String'(Buffer (1 .. Last));
d23b8f57 RK	52	while Last = Buffer'Last loop
	53	Get_Line (Buffer, Last);
	54	Str2 := new String'(Str1.all & Buffer (1 .. Last));
	55	Free (Str1);
	56	Str1 := Str2;
	57	end loop;
	58
798a9055 RD	59	Result.Reference := Str1;
798a9055 RD	60	Result.Last := Str1'Length;
d23b8f57 RK	61	return Result;
	62	end Get_Line;
	63
	64	function Get_Line (File : Ada.Text_IO.File_Type) return Unbounded_String is
	65	Buffer : String (1 .. 1000);
	66	Last : Natural;
	67	Str1 : String_Access;
	68	Str2 : String_Access;
	69	Result : Unbounded_String;
	70
	71	begin
	72	Get_Line (File, Buffer, Last);
	73	Str1 := new String'(Buffer (1 .. Last));
d23b8f57 RK	74	while Last = Buffer'Last loop
	75	Get_Line (File, Buffer, Last);
	76	Str2 := new String'(Str1.all & Buffer (1 .. Last));
	77	Free (Str1);
	78	Str1 := Str2;
	79	end loop;
	80
798a9055 RD	81	Result.Reference := Str1;
798a9055 RD	82	Result.Last := Str1'Length;
d23b8f57 RK	83	return Result;
	84	end Get_Line;
	85
82c80734	86	procedure Get_Line (Item : out Unbounded_String) is
82c80734	87	begin
798a9055	88	Get_Line (Current_Input, Item);
82c80734 RD	89	end Get_Line;
	90
	91	procedure Get_Line
	92	(File : Ada.Text_IO.File_Type;
	93	Item : out Unbounded_String)
	94	is
82c80734	95	begin
798a9055 RD	96	-- We are going to read into the string that is already there and
	97	-- allocated. Hopefully it is big enough now, if not, we will extend
	98	-- it in the usual manner using Realloc_For_Chunk.
82c80734	99
798a9055 RD	100	-- Make sure we start with at least 80 characters
	101
	102	if Item.Reference'Last < 80 then
	103	Realloc_For_Chunk (Item, 80);
	104	end if;
	105
	106	-- Loop to read data, filling current string as far as possible.
	107	-- Item.Last holds the number of characters read so far.
	108
	109	Item.Last := 0;
	110	loop
	111	Get_Line
	112	(File,
	113	Item.Reference (Item.Last + 1 .. Item.Reference'Last),
	114	Item.Last);
	115
	116	-- If we hit the end of the line before the end of the buffer, then
	117	-- we are all done, and the result length is properly set.
	118
	119	if Item.Last < Item.Reference'Last then
	120	return;
	121	end if;
	122
	123	-- If not enough room, double it and keep reading
	124
	125	Realloc_For_Chunk (Item, Item.Last);
	126	end loop;
82c80734 RD	127	end Get_Line;
82c80734 RD	128
d23b8f57 RK	129	---------
	130	-- Put --
	131	---------
	132
	133	procedure Put (U : Unbounded_String) is
	134	begin
798a9055	135	Put (U.Reference (1 .. U.Last));
d23b8f57 RK	136	end Put;
	137
	138	procedure Put (File : File_Type; U : Unbounded_String) is
	139	begin
798a9055	140	Put (File, U.Reference (1 .. U.Last));
d23b8f57 RK	141	end Put;
	142
	143	--------------
	144	-- Put_Line --
	145	--------------
	146
	147	procedure Put_Line (U : Unbounded_String) is
	148	begin
798a9055	149	Put_Line (U.Reference (1 .. U.Last));
d23b8f57 RK	150	end Put_Line;
	151
	152	procedure Put_Line (File : File_Type; U : Unbounded_String) is
	153	begin
798a9055	154	Put_Line (File, U.Reference (1 .. U.Last));
d23b8f57 RK	155	end Put_Line;
	156
	157	end Ada.Strings.Unbounded.Text_IO;