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Diffstat (limited to 'ncurses-5.3/Ada95/samples/ncurses2-util.adb')
| -rw-r--r-- | ncurses-5.3/Ada95/samples/ncurses2-util.adb | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/ncurses-5.3/Ada95/samples/ncurses2-util.adb b/ncurses-5.3/Ada95/samples/ncurses2-util.adb new file mode 100644 index 0000000..d771782 --- /dev/null +++ b/ncurses-5.3/Ada95/samples/ncurses2-util.adb @@ -0,0 +1,199 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT ncurses Binding Samples -- +-- -- +-- ncurses2.util -- +-- -- +-- B O D Y -- +-- -- +------------------------------------------------------------------------------ +-- Copyright (c) 2000 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 +-- $Revision$ +-- Binding Version 01.00 +------------------------------------------------------------------------------ +with Terminal_Interface.Curses; use Terminal_Interface.Curses; + +with Ada.Text_IO; + +with Terminal_Interface.Curses; use Terminal_Interface.Curses; +pragma Warnings (Off); +with Terminal_Interface.Curses.Aux; +pragma Warnings (On); + +with Terminal_Interface.Curses.Trace; use Terminal_Interface.Curses.Trace; + +with Ada.Text_IO; use Ada.Text_IO; + +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 + x : Key_Code; + begin + x := Getchar (win); + 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; + use Terminal_Interface.Curses.Aux; + 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; |