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+------------------------------------------------------------------------------
+-- --
+-- GNAT ncurses Binding Samples --
+-- --
+-- ncurses2.trace_set --
+-- --
+-- B O D Y --
+-- --
+------------------------------------------------------------------------------
+-- Copyright (c) 2000-2006,2008 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: 1.3 $
+-- $Date: 2008/07/26 18:46:18 $
+-- Binding Version 01.00
+------------------------------------------------------------------------------
+with ncurses2.util; use ncurses2.util;
+with Terminal_Interface.Curses; use Terminal_Interface.Curses;
+with Terminal_Interface.Curses.Trace; use Terminal_Interface.Curses.Trace;
+with Terminal_Interface.Curses.Menus; use Terminal_Interface.Curses.Menus;
+
+with Ada.Strings.Bounded;
+
+-- interactively set the trace level
+
+procedure ncurses2.trace_set is
+
+ function menu_virtualize (c : Key_Code) return Menu_Request_Code;
+ function subset (super, sub : Trace_Attribute_Set) return Boolean;
+ function trace_or (a, b : Trace_Attribute_Set) return Trace_Attribute_Set;
+ function trace_num (tlevel : Trace_Attribute_Set) return String;
+ function tracetrace (tlevel : Trace_Attribute_Set) return String;
+ function run_trace_menu (m : Menu; count : Integer) return Boolean;
+
+ function menu_virtualize (c : Key_Code) return Menu_Request_Code is
+ begin
+ case c is
+ when Character'Pos (newl) | Key_Exit =>
+ return Menu_Request_Code'Last + 1; -- MAX_COMMAND? TODO
+ when Character'Pos ('u') =>
+ return M_ScrollUp_Line;
+ when Character'Pos ('d') =>
+ return M_ScrollDown_Line;
+ when Character'Pos ('b') | Key_Next_Page =>
+ return M_ScrollUp_Page;
+ when Character'Pos ('f') | Key_Previous_Page =>
+ return M_ScrollDown_Page;
+ when Character'Pos ('n') | Key_Cursor_Down =>
+ return M_Next_Item;
+ when Character'Pos ('p') | Key_Cursor_Up =>
+ return M_Previous_Item;
+ when Character'Pos (' ') =>
+ return M_Toggle_Item;
+ when Key_Mouse =>
+ return c;
+ when others =>
+ Beep;
+ return c;
+ end case;
+ end menu_virtualize;
+
+ type string_a is access String;
+ type tbl_entry is record
+ name : string_a;
+ mask : Trace_Attribute_Set;
+ end record;
+
+ t_tbl : constant array (Positive range <>) of tbl_entry :=
+ (
+ (new String'("Disable"),
+ Trace_Disable),
+ (new String'("Times"),
+ Trace_Attribute_Set'(Times => True, others => False)),
+ (new String'("Tputs"),
+ Trace_Attribute_Set'(Tputs => True, others => False)),
+ (new String'("Update"),
+ Trace_Attribute_Set'(Update => True, others => False)),
+ (new String'("Cursor_Move"),
+ Trace_Attribute_Set'(Cursor_Move => True, others => False)),
+ (new String'("Character_Output"),
+ Trace_Attribute_Set'(Character_Output => True, others => False)),
+ (new String'("Ordinary"),
+ Trace_Ordinary),
+ (new String'("Calls"),
+ Trace_Attribute_Set'(Calls => True, others => False)),
+ (new String'("Virtual_Puts"),
+ Trace_Attribute_Set'(Virtual_Puts => True, others => False)),
+ (new String'("Input_Events"),
+ Trace_Attribute_Set'(Input_Events => True, others => False)),
+ (new String'("TTY_State"),
+ Trace_Attribute_Set'(TTY_State => True, others => False)),
+ (new String'("Internal_Calls"),
+ Trace_Attribute_Set'(Internal_Calls => True, others => False)),
+ (new String'("Character_Calls"),
+ Trace_Attribute_Set'(Character_Calls => True, others => False)),
+ (new String'("Termcap_TermInfo"),
+ Trace_Attribute_Set'(Termcap_TermInfo => True, others => False)),
+ (new String'("Maximium"),
+ Trace_Maximum)
+ );
+
+ package BS is new Ada.Strings.Bounded.Generic_Bounded_Length (300);
+
+ function subset (super, sub : Trace_Attribute_Set) return Boolean is
+ begin
+ if
+ (super.Times or not sub.Times) and
+ (super.Tputs or not sub.Tputs) and
+ (super.Update or not sub.Update) and
+ (super.Cursor_Move or not sub.Cursor_Move) and
+ (super.Character_Output or not sub.Character_Output) and
+ (super.Calls or not sub.Calls) and
+ (super.Virtual_Puts or not sub.Virtual_Puts) and
+ (super.Input_Events or not sub.Input_Events) and
+ (super.TTY_State or not sub.TTY_State) and
+ (super.Internal_Calls or not sub.Internal_Calls) and
+ (super.Character_Calls or not sub.Character_Calls) and
+ (super.Termcap_TermInfo or not sub.Termcap_TermInfo) and
+ True then
+ return True;
+ else
+ return False;
+ end if;
+ end subset;
+
+ function trace_or (a, b : Trace_Attribute_Set) return Trace_Attribute_Set is
+ retval : Trace_Attribute_Set := Trace_Disable;
+ begin
+ retval.Times := (a.Times or b.Times);
+ retval.Tputs := (a.Tputs or b.Tputs);
+ retval.Update := (a.Update or b.Update);
+ retval.Cursor_Move := (a.Cursor_Move or b.Cursor_Move);
+ retval.Character_Output := (a.Character_Output or b.Character_Output);
+ retval.Calls := (a.Calls or b.Calls);
+ retval.Virtual_Puts := (a.Virtual_Puts or b.Virtual_Puts);
+ retval.Input_Events := (a.Input_Events or b.Input_Events);
+ retval.TTY_State := (a.TTY_State or b.TTY_State);
+ retval.Internal_Calls := (a.Internal_Calls or b.Internal_Calls);
+ retval.Character_Calls := (a.Character_Calls or b.Character_Calls);
+ retval.Termcap_TermInfo := (a.Termcap_TermInfo or b.Termcap_TermInfo);
+
+ return retval;
+ end trace_or;
+
+ -- Print the hexadecimal value of the mask so
+ -- users can set it from the command line.
+
+ function trace_num (tlevel : Trace_Attribute_Set) return String is
+ result : Integer := 0;
+ m : Integer := 1;
+ begin
+
+ if tlevel.Times then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Tputs then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Update then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Cursor_Move then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Character_Output then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Calls then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Virtual_Puts then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Input_Events then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.TTY_State then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Internal_Calls then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Character_Calls then
+ result := result + m;
+ end if;
+ m := m * 2;
+
+ if tlevel.Termcap_TermInfo then
+ result := result + m;
+ end if;
+ m := m * 2;
+ return result'Img;
+ end trace_num;
+
+ function tracetrace (tlevel : Trace_Attribute_Set) return String is
+
+ use BS;
+ buf : Bounded_String := To_Bounded_String ("");
+ begin
+ -- The C version prints the hexadecimal value of the mask, we
+ -- won't do that here because this is Ada.
+
+ if tlevel = Trace_Disable then
+ Append (buf, "Trace_Disable");
+ else
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Times => True, others => False)) then
+ Append (buf, "Times");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Tputs => True, others => False)) then
+ Append (buf, "Tputs");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Update => True, others => False)) then
+ Append (buf, "Update");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Cursor_Move => True,
+ others => False)) then
+ Append (buf, "Cursor_Move");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Character_Output => True,
+ others => False)) then
+ Append (buf, "Character_Output");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Ordinary) then
+ Append (buf, "Ordinary");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Calls => True, others => False)) then
+ Append (buf, "Calls");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Virtual_Puts => True,
+ others => False)) then
+ Append (buf, "Virtual_Puts");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Input_Events => True,
+ others => False)) then
+ Append (buf, "Input_Events");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(TTY_State => True,
+ others => False)) then
+ Append (buf, "TTY_State");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Internal_Calls => True,
+ others => False)) then
+ Append (buf, "Internal_Calls");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Character_Calls => True,
+ others => False)) then
+ Append (buf, "Character_Calls");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Attribute_Set'(Termcap_TermInfo => True,
+ others => False)) then
+ Append (buf, "Termcap_TermInfo");
+ Append (buf, ", ");
+ end if;
+
+ if subset (tlevel,
+ Trace_Maximum) then
+ Append (buf, "Maximium");
+ Append (buf, ", ");
+ end if;
+ end if;
+
+ if To_String (buf) (Length (buf) - 1) = ',' then
+ Delete (buf, Length (buf) - 1, Length (buf));
+ end if;
+
+ return To_String (buf);
+ end tracetrace;
+
+ function run_trace_menu (m : Menu; count : Integer) return Boolean is
+ i, p : Item;
+ changed : Boolean;
+ c, v : Key_Code;
+ begin
+ loop
+ changed := (count /= 0);
+ c := Getchar (Get_Window (m));
+ v := menu_virtualize (c);
+ case Driver (m, v) is
+ when Unknown_Request =>
+ return False;
+ when others =>
+ i := Current (m);
+ if i = Menus.Items (m, 1) then -- the first item
+ for n in t_tbl'First + 1 .. t_tbl'Last loop
+ if Value (i) then
+ Set_Value (i, False);
+ changed := True;
+ end if;
+ end loop;
+ else
+ for n in t_tbl'First + 1 .. t_tbl'Last loop
+ p := Menus.Items (m, n);
+ if Value (p) then
+ Set_Value (Menus.Items (m, 1), False);
+ changed := True;
+ exit;
+ end if;
+ end loop;
+ end if;
+ if not changed then
+ return True;
+ end if;
+ end case;
+ end loop;
+ end run_trace_menu;
+
+ nc_tracing, mask : Trace_Attribute_Set;
+ pragma Import (C, nc_tracing, "_nc_tracing");
+ items_a : constant Item_Array_Access :=
+ new Item_Array (t_tbl'First .. t_tbl'Last + 1);
+ mrows : Line_Count;
+ mcols : Column_Count;
+ menuwin : Window;
+ menu_y : constant Line_Position := 8;
+ menu_x : constant Column_Position := 8;
+ ip : Item;
+ m : Menu;
+ count : Integer;
+ newtrace : Trace_Attribute_Set;
+begin
+ Add (Line => 0, Column => 0, Str => "Interactively set trace level:");
+ Add (Line => 2, Column => 0,
+ Str => " Press space bar to toggle a selection.");
+ Add (Line => 3, Column => 0,
+ Str => " Use up and down arrow to move the select bar.");
+ Add (Line => 4, Column => 0,
+ Str => " Press return to set the trace level.");
+ Add (Line => 6, Column => 0, Str => "(Current trace level is ");
+ Add (Str => tracetrace (nc_tracing) & " numerically: " &
+ trace_num (nc_tracing));
+ Add (Ch => ')');
+
+ Refresh;
+
+ for n in t_tbl'Range loop
+ items_a (n) := New_Item (t_tbl (n).name.all);
+ end loop;
+ items_a (t_tbl'Last + 1) := Null_Item;
+
+ m := New_Menu (items_a);
+
+ Set_Format (m, 16, 2);
+ Scale (m, mrows, mcols);
+
+ Switch_Options (m, (One_Valued => True, others => False), On => False);
+ menuwin := New_Window (mrows + 2, mcols + 2, menu_y, menu_x);
+ Set_Window (m, menuwin);
+ Set_KeyPad_Mode (menuwin, SwitchOn => True);
+ Box (menuwin);
+
+ Set_Sub_Window (m, Derived_Window (menuwin, mrows, mcols, 1, 1));
+
+ Post (m);
+
+ for n in t_tbl'Range loop
+ ip := Items (m, n);
+ mask := t_tbl (n).mask;
+ if mask = Trace_Disable then
+ Set_Value (ip, nc_tracing = Trace_Disable);
+ elsif subset (sub => mask, super => nc_tracing) then
+ Set_Value (ip, True);
+ end if;
+ end loop;
+
+ count := 1;
+ while run_trace_menu (m, count) loop
+ count := count + 1;
+ end loop;
+
+ newtrace := Trace_Disable;
+ for n in t_tbl'Range loop
+ ip := Items (m, n);
+ if Value (ip) then
+ mask := t_tbl (n).mask;
+ newtrace := trace_or (newtrace, mask);
+ end if;
+ end loop;
+
+ Trace_On (newtrace);
+ Trace_Put ("trace level interactively set to " &
+ tracetrace (nc_tracing));
+
+ Move_Cursor (Line => Lines - 4, Column => 0);
+ Add (Str => "Trace level is ");
+ Add (Str => tracetrace (nc_tracing));
+ Add (Ch => newl);
+ Pause; -- was just Add(); Getchar
+
+ Post (m, False);
+ -- menuwin has subwindows I think, which makes an error.
+ declare begin
+ Delete (menuwin);
+ exception when Curses_Exception => null; end;
+
+ -- free_menu(m);
+ -- free_item()
+end ncurses2.trace_set;
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