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------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding Samples --
-- --
-- ncurses2.util --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 2000-2008,2014 Free Software Foundation, Inc. --
-- --
-- Permission is hereby granted, free of charge, to any person obtaining a --
-- copy of this software and associated documentation files (the --
-- "Software"), to deal in the Software without restriction, including --
-- without limitation the rights to use, copy, modify, merge, publish, --
-- distribute, distribute with modifications, sublicense, and/or sell --
-- copies of the Software, and to permit persons to whom the Software is --
-- furnished to do so, subject to the following conditions: --
-- --
-- The above copyright notice and this permission notice shall be included --
-- in all copies or substantial portions of the Software. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
-- --
-- Except as contained in this notice, the name(s) of the above copyright --
-- holders shall not be used in advertising or otherwise to promote the --
-- sale, use or other dealings in this Software without prior written --
-- authorization. --
------------------------------------------------------------------------------
-- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
-- Version Control
-- $Revision: 1.9 $
-- $Date: 2014/05/24 21:32:18 $
-- Binding Version 01.00
------------------------------------------------------------------------------
with Ada.Text_IO; use Ada.Text_IO;
with Terminal_Interface.Curses.Trace; use Terminal_Interface.Curses.Trace;
with Interfaces.C;
with Interfaces.C.Strings;
with Ada.Characters.Handling;
with ncurses2.genericPuts;
package body ncurses2.util is
-- #defines from C
-- #define CTRL(x) ((x) & 0x1f)
function CTRL (c : Character) return Key_Code is
begin
return Character'Pos (c) mod 16#20#;
-- uses a property of ASCII
-- A = 16#41#; a = 16#61#; ^A = 1 or 16#1#
end CTRL;
function CTRL (c : Character) return Character is
begin
return Character'Val (Character'Pos (c) mod 16#20#);
-- uses a property of ASCII
-- A = 16#41#; a = 16#61#; ^A = 1 or 16#1#
end CTRL;
save_trace : Trace_Attribute_Set;
-- Common function to allow ^T to toggle trace-mode in the middle of a test
-- so that trace-files can be made smaller.
function Getchar (win : Window := Standard_Window) return Key_Code is
c : Key_Code;
begin
-- #ifdef TRACE
c := Get_Keystroke (win);
while c = CTRL ('T') loop
-- if _nc_tracing in C
if Current_Trace_Setting /= Trace_Disable then
save_trace := Current_Trace_Setting;
Trace_Put ("TOGGLE-TRACING OFF");
Current_Trace_Setting := Trace_Disable;
else
Current_Trace_Setting := save_trace;
end if;
Trace_On (Current_Trace_Setting);
if Current_Trace_Setting /= Trace_Disable then
Trace_Put ("TOGGLE-TRACING ON");
end if;
end loop;
-- #else c := Get_Keystroke;
return c;
end Getchar;
procedure Getchar (win : Window := Standard_Window) is
begin
if Getchar (win) < 0 then
Beep;
end if;
end Getchar;
procedure Pause is
begin
Move_Cursor (Line => Lines - 1, Column => 0);
Add (Str => "Press any key to continue... ");
Getchar;
end Pause;
procedure Cannot (s : String) is
use Interfaces.C;
use Interfaces.C.Strings;
function getenv (x : char_array) return chars_ptr;
pragma Import (C, getenv, "getenv");
tmp1 : char_array (0 .. 10);
package p is new ncurses2.genericPuts (1024);
use p;
use p.BS;
tmpb : BS.Bounded_String;
Length : size_t;
begin
To_C ("TERM", tmp1, Length);
Fill_String (getenv (tmp1), tmpb);
Add (Ch => newl);
myAdd (Str => "This " & tmpb & " terminal " & s);
Pause;
end Cannot;
procedure ShellOut (message : Boolean) is
use Interfaces.C;
Txt : char_array (0 .. 10);
Length : size_t;
procedure system (x : char_array);
pragma Import (C, system, "system");
begin
To_C ("sh", Txt, Length);
if message then
Add (Str => "Shelling out...");
end if;
Save_Curses_Mode (Mode => Curses);
End_Windows;
system (Txt);
if message then
Add (Str => "returned from shellout.");
Add (Ch => newl);
end if;
Refresh;
end ShellOut;
function Is_Digit (c : Key_Code) return Boolean is
begin
if c >= 16#100# then
return False;
else
return Ada.Characters.Handling.Is_Digit (Character'Val (c));
end if;
end Is_Digit;
procedure P (s : String) is
begin
Add (Str => s);
Add (Ch => newl);
end P;
function Code_To_Char (c : Key_Code) return Character is
begin
if c > Character'Pos (Character'Last) then
return Character'Val (0);
-- maybe raise exception?
else
return Character'Val (c);
end if;
end Code_To_Char;
-- This was untestable due to a bug in GNAT (3.12p)
-- Hmm, what bug? I don't remember.
function ctoi (c : Character) return Integer is
begin
return Character'Pos (c) - Character'Pos ('0');
end ctoi;
end ncurses2.util;
|
