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- -- MERIDIAN.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
- --
- -- Compile this before compiling ADA_TUTR.ADA, when using a PC with a Meridian
- -- Ada compiler and the Meridian DOS Environment Library.
- --
- with Tty;
- 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);
- procedure Put (Char : in Character) renames Tty.Put;
- procedure Put (Str : in String) renames Tty.Put;
- procedure Put_Line (Str : in String) renames Tty.Put_Line;
- procedure Get_Line (Str : out String; Last : out Natural);
- procedure New_Line;
- end Custom_IO;
-
- with Interrupt;
- package body Custom_IO is
- procedure Set_Border_Color(To : in Color) is
- --
- -- This procedure sets the border color on a PC by calling interrupt
- -- 10 hex. Before the call, register AH is set to service number 0B hex,
- -- BH is set to zero, and BL is set to an integer as shown in the
- -- declaration of Color_Number 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.
- --
- Regis_Block : Interrupt.Registers;
- Color_Number : constant array(Color) of Integer :=
- (Black => 0, Red => 4, Green => 2, Yellow => 6,
- Blue => 1, Magenta => 5, Cyan => 3, White => 7);
- begin
- Regis_Block.AX := 16#0B00#;
- Regis_Block.BX := 16#0000# + COLOR_NUMBER(TO);
- Interrupt.Vector(On => 16#10#, Register_Block => Regis_Block);
- end Set_Border_Color;
-
- procedure Get(Char : out Character) is
- begin
- Char := Tty.Get(No_Echo => True);
- end Get;
-
- procedure Get_Line(Str : out String; Last : out Natural) is
- begin
- Tty.Get(Str, Last);
- New_Line;
- end Get_Line;
-
- procedure New_Line is
- begin
- Put_Line("");
- end New_Line;
- end Custom_IO;
-