/usr/share/doc/libncursesada-doc/examples/ncurses2-trace_set.adb is in libncursesada-doc 5.9.20110404-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 | ------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding Samples --
-- --
-- ncurses2.trace_set --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 2000-2008,2011 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: 1.5 $
-- $Date: 2011/03/23 00:40:33 $
-- 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 Key_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 Key_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.all (n) := New_Item (t_tbl (n).name.all);
end loop;
items_a.all (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;
|