1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
9 ------------------------------------------------------------------------------
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35 ------------------------------------------------------------------------------
36 -- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
39 -- $Date: 2014/05/24 21:32:18 $
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
42 with Ada.Text_IO; use Ada.Text_IO;
44 with Terminal_Interface.Curses.Trace; use Terminal_Interface.Curses.Trace;
47 with Interfaces.C.Strings;
49 with Ada.Characters.Handling;
51 with ncurses2.genericPuts;
53 package body ncurses2.util is
56 -- #define CTRL(x) ((x) & 0x1f)
57 function CTRL (c : Character) return Key_Code is
59 return Character'Pos (c) mod 16#20#;
60 -- uses a property of ASCII
61 -- A = 16#41#; a = 16#61#; ^A = 1 or 16#1#
64 function CTRL (c : Character) return Character is
66 return Character'Val (Character'Pos (c) mod 16#20#);
67 -- uses a property of ASCII
68 -- A = 16#41#; a = 16#61#; ^A = 1 or 16#1#
71 save_trace : Trace_Attribute_Set;
72 -- Common function to allow ^T to toggle trace-mode in the middle of a test
73 -- so that trace-files can be made smaller.
74 function Getchar (win : Window := Standard_Window) return Key_Code is
78 c := Get_Keystroke (win);
79 while c = CTRL ('T') loop
80 -- if _nc_tracing in C
81 if Current_Trace_Setting /= Trace_Disable then
82 save_trace := Current_Trace_Setting;
83 Trace_Put ("TOGGLE-TRACING OFF");
84 Current_Trace_Setting := Trace_Disable;
86 Current_Trace_Setting := save_trace;
88 Trace_On (Current_Trace_Setting);
89 if Current_Trace_Setting /= Trace_Disable then
90 Trace_Put ("TOGGLE-TRACING ON");
93 -- #else c := Get_Keystroke;
97 procedure Getchar (win : Window := Standard_Window) is
99 if Getchar (win) < 0 then
106 Move_Cursor (Line => Lines - 1, Column => 0);
107 Add (Str => "Press any key to continue... ");
111 procedure Cannot (s : String) is
113 use Interfaces.C.Strings;
114 function getenv (x : char_array) return chars_ptr;
115 pragma Import (C, getenv, "getenv");
116 tmp1 : char_array (0 .. 10);
117 package p is new ncurses2.genericPuts (1024);
121 tmpb : BS.Bounded_String;
125 To_C ("TERM", tmp1, Length);
126 Fill_String (getenv (tmp1), tmpb);
128 myAdd (Str => "This " & tmpb & " terminal " & s);
132 procedure ShellOut (message : Boolean) is
134 Txt : char_array (0 .. 10);
136 procedure system (x : char_array);
137 pragma Import (C, system, "system");
139 To_C ("sh", Txt, Length);
141 Add (Str => "Shelling out...");
143 Save_Curses_Mode (Mode => Curses);
147 Add (Str => "returned from shellout.");
153 function Is_Digit (c : Key_Code) return Boolean is
158 return Ada.Characters.Handling.Is_Digit (Character'Val (c));
162 procedure P (s : String) is
168 function Code_To_Char (c : Key_Code) return Character is
170 if c > Character'Pos (Character'Last) then
171 return Character'Val (0);
172 -- maybe raise exception?
174 return Character'Val (c);
178 -- This was untestable due to a bug in GNAT (3.12p)
179 -- Hmm, what bug? I don't remember.
180 function ctoi (c : Character) return Integer is
182 return Character'Pos (c) - Character'Pos ('0');