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ADA Programming Guide
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vanilla.ada
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1996-01-30
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-- VANILLA.ADA Ver. 3.00 22-AUG-1994 Copyright 1988-1994 John J. Herro
-- Software Innovations Technology
-- 1083 Mandarin Drive NE, Palm Bay, FL 32905-4706 (407)951-0233
--
-- "Plain vanilla" version of CUSTOM_IO which should work with ANY standard Ada
-- compiler. Compile this before compiling ADA_TUTR.ADA.
--
with Text_IO;
package Custom_IO is
type Color is (Black, Red, Green, Yellow, Blue, Magenta, Cyan, White);
Foregrnd_Color : Color := White; -- Default values in case
Backgrnd_Color : Color := Black; -- ADA-TUTR finds no User
Border_Color : Color := Black; -- File.
Fore_Color_Digit : Character := Character'Val(Color'Pos(Foregrnd_Color)+48);
Back_Color_Digit : Character := Character'Val(Color'Pos(Backgrnd_Color)+48);
Normal_Colors : String(1 .. 10) := ASCII.ESC & "[0;3" &
Fore_Color_Digit & ";4" & Back_Color_Digit & "m";
Clear_Scrn : constant String := ASCII.ESC & "[H" & ASCII.ESC & "[2J";
procedure Set_Border_Color (To : in Color);
procedure Get (Char : out Character) renames Text_IO.Get;
procedure Put (Char : in Character) renames Text_IO.Put;
procedure Put (Str : in String) renames Text_IO.Put;
procedure Put_Line (Str : in String) renames Text_IO.Put_Line;
procedure Get_Line (Str : out String;
Last : out Natural) renames Text_IO.Get_Line;
procedure New_Line (Spacing : in Text_IO.Count := 1)
renames Text_IO.New_Line;
end Custom_IO;
package body Custom_IO is
procedure Set_Border_Color(To : in Color) is
--
-- This is a dummy procedure. If your PC Ada compiler allows interrupt
-- calls or assembly language, you may want to write code to call
-- interrupt 10 hex. (See JANUS.ADA and MERIDIAN.ADA for examples.)
-- Before the call, set register AH to service number 0B hex, set BH to
-- zero, and set BL to Color_Number(To), where Color_Number is declared
-- below. Note that the integers in Color_Number are bit reversed from
-- the integers defining foreground and background colors in ANSI escape
-- sequences. Note also that some color PCs don't have separate border
-- colors.
--
Color_Number : constant array(Color) of Integer :=
(Black => 0, Red => 4, Green => 2, Yellow => 6,
Blue => 1, Magenta => 5, Cyan => 3, White => 7);
begin
null;
end Set_Border_Color;
end Custom_IO;