------------------------------------------------------------------------------ -- -- -- GNAT ncurses Binding Samples -- -- -- -- ncurses2.trace_set -- -- -- -- 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 2000 -- Version Control -- $Revision$ -- 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) 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) return Boolean is i, p : Item; changed : Boolean; c, v : Key_Code; begin loop changed := False; 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 : 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; 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; while run_trace_menu (m) loop null; 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;