1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
9 ------------------------------------------------------------------------------
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35 ------------------------------------------------------------------------------
36 -- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
39 -- $Date: 2008/07/26 18:51:20 $
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
42 with Ada.Text_IO; use Ada.Text_IO;
44 pragma Warnings (Off);
45 with Terminal_Interface.Curses.Aux;
48 with Terminal_Interface.Curses.Trace; use Terminal_Interface.Curses.Trace;
51 with Interfaces.C.Strings;
53 with Ada.Characters.Handling;
55 with ncurses2.genericPuts;
57 package body ncurses2.util is
60 -- #define CTRL(x) ((x) & 0x1f)
61 function CTRL (c : Character) return Key_Code is
63 return Character'Pos (c) mod 16#20#;
64 -- uses a property of ASCII
65 -- A = 16#41#; a = 16#61#; ^A = 1 or 16#1#
68 function CTRL (c : Character) return Character is
70 return Character'Val (Character'Pos (c) mod 16#20#);
71 -- uses a property of ASCII
72 -- A = 16#41#; a = 16#61#; ^A = 1 or 16#1#
75 save_trace : Trace_Attribute_Set;
76 -- Common function to allow ^T to toggle trace-mode in the middle of a test
77 -- so that trace-files can be made smaller.
78 function Getchar (win : Window := Standard_Window) return Key_Code is
82 c := Get_Keystroke (win);
83 while c = CTRL ('T') loop
84 -- if _nc_tracing in C
85 if Current_Trace_Setting /= Trace_Disable then
86 save_trace := Current_Trace_Setting;
87 Trace_Put ("TOGGLE-TRACING OFF");
88 Current_Trace_Setting := Trace_Disable;
90 Current_Trace_Setting := save_trace;
92 Trace_On (Current_Trace_Setting);
93 if Current_Trace_Setting /= Trace_Disable then
94 Trace_Put ("TOGGLE-TRACING ON");
97 -- #else c := Get_Keystroke;
101 procedure Getchar (win : Window := Standard_Window) is
103 if Getchar (win) < 0 then
110 Move_Cursor (Line => Lines - 1, Column => 0);
111 Add (Str => "Press any key to continue... ");
115 procedure Cannot (s : String) is
117 use Interfaces.C.Strings;
118 use Terminal_Interface.Curses.Aux;
119 function getenv (x : char_array) return chars_ptr;
120 pragma Import (C, getenv, "getenv");
121 tmp1 : char_array (0 .. 10);
122 package p is new ncurses2.genericPuts (1024);
126 tmpb : BS.Bounded_String;
130 To_C ("TERM", tmp1, Length);
131 Fill_String (getenv (tmp1), tmpb);
133 myAdd (Str => "This " & tmpb & " terminal " & s);
137 procedure ShellOut (message : Boolean) is
139 Txt : char_array (0 .. 10);
141 procedure system (x : char_array);
142 pragma Import (C, system, "system");
144 To_C ("sh", Txt, Length);
146 Add (Str => "Shelling out...");
148 Save_Curses_Mode (Mode => Curses);
152 Add (Str => "returned from shellout.");
158 function Is_Digit (c : Key_Code) return Boolean is
163 return Ada.Characters.Handling.Is_Digit (Character'Val (c));
167 procedure P (s : String) is
173 function Code_To_Char (c : Key_Code) return Character is
175 if c > Character'Pos (Character'Last) then
176 return Character'Val (0);
177 -- maybe raise exception?
179 return Character'Val (c);
183 -- This was untestable due to a bug in GNAT (3.12p)
184 -- Hmm, what bug? I don't remember.
185 function ctoi (c : Character) return Integer is
187 return Character'Pos (c) - Character'Pos ('0');