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Comparing rxvt-unicode/src/keyboard.C (file contents):
Revision 1.8 by root, Mon Jan 17 00:07:26 2005 UTC vs.
Revision 1.13 by root, Thu Feb 24 13:01:01 2005 UTC

… …
6#include <cstring> 6#include <cstring>
7 7
8#include "keyboard.h" 8#include "keyboard.h"
9#include "command.h" 9#include "command.h"
10 10
11/* an intro to the data structure:
12 *
13 * vector keymap[] is grouped.
14 *
15 * inside each group, elements are sorted by the criteria given by compare_priority().
16 * the lookup of keysym is done in two steps:
17 * 1) locate the group corresponds to the keysym;
18 * 2) do a linear search inside the group.
19 *
20 * array hash[] effectively defines a map from a keysym to a group in keymap[].
21 *
22 * each group has its address(the index of first group element in keymap[]),
23 * which is computed and stored in hash[].
24 * hash[] stores the addresses in the form of:
25 * index: 0 I1 I2 I3 In
26 * value: 0...0, A1...A1, A2...A2, A3...A3, ..., An...An
27 * where
28 * A1 = 0;
29 * Ai+1 = N1 + N2 + ... + Ni.
30 * it is computed from hash_budget_size[]:
31 * index: 0 I1 I2 I3 In
32 * value: 0...0, N1, 0...0, N2, 0...0, N3, ..., Nn, 0...0
33 * 0...0, 0.......0, N1.....N1, N1+N2...N1+N2, ... (the compution of hash[])
34 * or we can say
35 * hash_budget_size[Ii] = Ni; hash_budget_size[elsewhere] = 0,
36 * where
37 * set {I1, I2, ..., In} = { hashkey of keymap[0]->keysym, ..., keymap[keymap.size-1]->keysym }
38 * where hashkey of keymap[i]->keysym = keymap[i]->keysym & KEYSYM_HASH_MASK
39 * n(the number of groups) = the number of non-zero member of hash_budget_size[];
40 * Ni(the size of group i) = hash_budget_size[Ii].
41 */
42
43#if STOCK_KEYMAP
11//////////////////////////////////////////////////////////////////////////////// 44////////////////////////////////////////////////////////////////////////////////
12// default keycode translation map and keyevent handlers 45// default keycode translation map and keyevent handlers
13 46
14keysym_t keyboard_manager::stock_keymap[] = { 47keysym_t keyboard_manager::stock_keymap[] = {
15 /* examples */ 48 /* examples */
16 /* keysym, state, range, handler, str */ 49 /* keysym, state, range, handler, str */
17//{XK_ISO_Left_Tab, 0, 1, NORMAL, "\033[Z"}, 50//{XK_ISO_Left_Tab, 0, 1, keysym_t::NORMAL, "\033[Z"},
18//{ 'a', 0, 26, RANGE_META8, "a" "%c"}, 51//{ 'a', 0, 26, keysym_t::RANGE_META8, "a" "%c"},
19//{ 'a', ControlMask, 26, RANGE_META8, "" "%c"}, 52//{ 'a', ControlMask, 26, keysym_t::RANGE_META8, "" "%c"},
20//{ XK_Left, 0, 4, LIST, "DACBZ" "\033[Z"}, 53//{ XK_Left, 0, 4, keysym_t::LIST, ".\033[.DACB."},
21//{ XK_Left, ShiftMask, 4, LIST, "dacbZ" "\033[Z"}, 54//{ XK_Left, ShiftMask, 4, keysym_t::LIST, ".\033[.dacb."},
22//{ XK_Left, ControlMask, 4, LIST, "dacbZ" "\033OZ"}, 55//{ XK_Left, ControlMask, 4, keysym_t::LIST, ".\033O.dacb."},
23//{ XK_Tab, ControlMask, 1, NORMAL, "\033<C-Tab>"}, 56//{ XK_Tab, ControlMask, 1, keysym_t::NORMAL, "\033<C-Tab>"},
24//{ XK_apostrophe, ControlMask, 1, NORMAL, "\033<C-'>"}, 57//{ XK_apostrophe, ControlMask, 1, keysym_t::NORMAL, "\033<C-'>"},
25//{ XK_slash, ControlMask, 1, NORMAL, "\033<C-/>"}, 58//{ XK_slash, ControlMask, 1, keysym_t::NORMAL, "\033<C-/>"},
26//{ XK_semicolon, ControlMask, 1, NORMAL, "\033<C-;>"}, 59//{ XK_semicolon, ControlMask, 1, keysym_t::NORMAL, "\033<C-;>"},
27//{ XK_grave, ControlMask, 1, NORMAL, "\033<C-`>"}, 60//{ XK_grave, ControlMask, 1, keysym_t::NORMAL, "\033<C-`>"},
28//{ XK_comma, ControlMask, 1, NORMAL, "\033<C-\054>"}, 61//{ XK_comma, ControlMask, 1, keysym_t::NORMAL, "\033<C-\054>"},
29//{ XK_Return, ControlMask, 1, NORMAL, "\033<C-Return>"}, 62//{ XK_Return, ControlMask, 1, keysym_t::NORMAL, "\033<C-Return>"},
30//{ XK_Return, ShiftMask, 1, NORMAL, "\033<S-Return>"}, 63//{ XK_Return, ShiftMask, 1, keysym_t::NORMAL, "\033<S-Return>"},
31//{ ' ', ShiftMask, 1, NORMAL, "\033<S-Space>"}, 64//{ ' ', ShiftMask, 1, keysym_t::NORMAL, "\033<S-Space>"},
32//{ '.', ControlMask, 1, NORMAL, "\033<C-.>"}, 65//{ '.', ControlMask, 1, keysym_t::NORMAL, "\033<C-.>"},
33//{ '0', ControlMask, 10, RANGE, "0" "\033<C-%c>"}, 66//{ '0', ControlMask, 10, keysym_t::RANGE, "0" "\033<C-%c>"},
34//{ '0', MetaMask|ControlMask, 10, RANGE, "0" "\033<M-C-%c>"}, 67//{ '0', MetaMask|ControlMask, 10, keysym_t::RANGE, "0" "\033<M-C-%c>"},
35//{ 'a', MetaMask|ControlMask, 26, RANGE, "a" "\033<M-C-%c>"}, 68//{ 'a', MetaMask|ControlMask, 26, keysym_t::RANGE, "a" "\033<M-C-%c>"},
36}; 69};
70#endif
37 71
38static void 72static void
39output_string (rxvt_term *rt, const char *str) 73output_string (rxvt_term *rt, const char *str)
40{ 74{
41 if (strncmp (str, "proto:", 6) == 0) 75 if (strncmp (str, "command:", 8) == 0)
42 rt->cmd_write ((unsigned char *)str + 6, strlen (str) - 6); 76 rt->cmd_write ((unsigned char *)str + 8, strlen (str) - 8);
43 else 77 else
44 rt->tt_write ((unsigned char *)str, strlen (str)); 78 rt->tt_write ((unsigned char *)str, strlen (str));
45} 79}
46 80
47static void 81static void
… …
207} 241}
208 242
209void 243void
210keyboard_manager::register_done () 244keyboard_manager::register_done ()
211{ 245{
246#if STOCK_KEYMAP
212 unsigned int i, n = sizeof (stock_keymap) / sizeof (keysym_t); 247 int n = sizeof (stock_keymap) / sizeof (keysym_t);
213 248
249 //TODO: shield against repeated calls and empty keymap
214 if (keymap.back () != &stock_keymap[n - 1]) 250 //if (keymap.back () != &stock_keymap[n - 1])
215 for (i = 0; i < n; ++i) 251 for (int i = 0; i < n; ++i)
216 register_keymap (&stock_keymap[i]); 252 register_keymap (&stock_keymap[i]);
253#endif
217 254
218 purge_duplicate_keymap (); 255 purge_duplicate_keymap ();
219 256
220 setup_hash (); 257 setup_hash ();
221} 258}
… …
239 const keysym_t &key = *keymap [index]; 276 const keysym_t &key = *keymap [index];
240 277
241 int keysym_offset = keysym - key.keysym; 278 int keysym_offset = keysym - key.keysym;
242 279
243 wchar_t *wc = rxvt_utf8towcs (key.str); 280 wchar_t *wc = rxvt_utf8towcs (key.str);
244
245 char *str = rxvt_wcstombs (wc); 281 char *str = rxvt_wcstombs (wc);
246 // TODO: do translations, unescaping etc, here (allow \u escape etc.) 282 // TODO: do (some) translations, unescaping etc, here (allow \u escape etc.)
247 free (wc); 283 free (wc);
248 284
249 switch (key.type) 285 switch (key.type)
250 { 286 {
251 case keysym_t::NORMAL: 287 case keysym_t::NORMAL:
… …
294 free (str); 330 free (str);
295 331
296 return true; 332 return true;
297 } 333 }
298 else 334 else
299 {
300 // fprintf(stderr,"[%x:%x]",state,keysym);
301 return false; 335 return false;
302 }
303} 336}
304 337
305// purge duplicate keymap entries 338// purge duplicate keymap entries
306void keyboard_manager::purge_duplicate_keymap () 339void keyboard_manager::purge_duplicate_keymap ()
307{ 340{
… …
317 if (i < keymap.size ()) 350 if (i < keymap.size ())
318 { 351 {
319 keymap[i] = keymap.back (); 352 keymap[i] = keymap.back ();
320 keymap.pop_back (); 353 keymap.pop_back ();
321 } 354 }
355
322 break; 356 break;
323 } 357 }
324 } 358 }
325 } 359 }
326} 360}
… …
334 uint16_t hash_budget_counter[KEYSYM_HASH_BUDGETS]; // #elements in each budget 368 uint16_t hash_budget_counter[KEYSYM_HASH_BUDGETS]; // #elements in each budget
335 369
336 memset (hash_budget_size, 0, sizeof (hash_budget_size)); 370 memset (hash_budget_size, 0, sizeof (hash_budget_size));
337 memset (hash_budget_counter, 0, sizeof (hash_budget_counter)); 371 memset (hash_budget_counter, 0, sizeof (hash_budget_counter));
338 372
339 // count keysyms for corresponding hash budgets 373 // determine hash bucket size
340 for (i = 0; i < keymap.size (); ++i) 374 for (i = 0; i < keymap.size (); ++i)
375 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j)
341 { 376 {
342 hashkey = keymap [i]->keysym & KEYSYM_HASH_MASK; 377 hashkey = (keymap [i]->keysym + j) & KEYSYM_HASH_MASK;
343 ++hash_budget_size [hashkey]; 378 ++hash_budget_size [hashkey];
344 }
345
346 // a keysym_t with range>1 is counted one more time for every keysym that
347 // lies in its range
348 for (i = 0; i < keymap.size (); ++i)
349 {
350 if (keymap[i]->range > 1)
351 {
352 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j > 0; --j)
353 {
354 hashkey = ((keymap [i]->keysym + j) & KEYSYM_HASH_MASK);
355 if (hash_budget_size [hashkey])
356 ++hash_budget_size [hashkey];
357 }
358 } 379 }
359 }
360 380
361 // now we know the size of each budget 381 // now we know the size of each budget
362 // compute the index of each budget 382 // compute the index of each budget
363 hash [0] = 0; 383 hash [0] = 0;
364 for (index = 0, i = 1; i < KEYSYM_HASH_BUDGETS; ++i) 384 for (index = 0, i = 1; i < KEYSYM_HASH_BUDGETS; ++i)
365 { 385 {
366 index += hash_budget_size [i - 1]; 386 index += hash_budget_size [i - 1];
367 hash[i] = (hash_budget_size [i] ? index : hash [i - 1]); 387 hash [i] = index;
368 } 388 }
369 389
370 // and allocate just enough space 390 // and allocate just enough space
371 //sorted_keymap.reserve (hash[i - 1] + hash_budget_size[i - 1]);
372 sorted_keymap.insert (sorted_keymap.begin (), index + hash_budget_size [i - 1], 0); 391 sorted_keymap.insert (sorted_keymap.begin (), index + hash_budget_size [i - 1], 0);
373 392
374 // fill in sorted_keymap 393 // fill in sorted_keymap
375 // it is sorted in each budget 394 // it is sorted in each budget
376 for (i = 0; i < keymap.size (); ++i) 395 for (i = 0; i < keymap.size (); ++i)
377 {
378 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j) 396 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j)
379 { 397 {
380 hashkey = ((keymap [i]->keysym + j) & KEYSYM_HASH_MASK); 398 hashkey = (keymap [i]->keysym + j) & KEYSYM_HASH_MASK;
381 399
382 if (hash_budget_size [hashkey])
383 {
384 index = hash [hashkey] + hash_budget_counter [hashkey]; 400 index = hash [hashkey] + hash_budget_counter [hashkey];
385 401
386 while (index > hash [hashkey] 402 while (index > hash [hashkey]
387 && compare_priority (keymap [i], sorted_keymap [index - 1]) > 0) 403 && compare_priority (keymap [i], sorted_keymap [index - 1]) > 0)
388 { 404 {
389 sorted_keymap [index] = sorted_keymap [index - 1]; 405 sorted_keymap [index] = sorted_keymap [index - 1];
390 --index; 406 --index;
391 } 407 }
392 408
393 sorted_keymap [index] = keymap [i]; 409 sorted_keymap [index] = keymap [i];
394 ++hash_budget_counter [hashkey]; 410 ++hash_budget_counter [hashkey];
395 }
396 } 411 }
397 }
398 412
399 keymap.swap (sorted_keymap); 413 keymap.swap (sorted_keymap);
400 414
401#if defined (DEBUG_STRICT) || defined (DEBUG_KEYBOARD) 415#if defined (DEBUG_STRICT) || defined (DEBUG_KEYBOARD)
402 // check for invariants 416 // check for invariants
… …
423 int index = find_keysym (a->keysym + j, a->state); 437 int index = find_keysym (a->keysym + j, a->state);
424 438
425 assert (index >= 0); 439 assert (index >= 0);
426 keysym_t *b = keymap [index]; 440 keysym_t *b = keymap [index];
427 assert (i == (signed) index || // the normally expected result 441 assert (i == (signed) index || // the normally expected result
428 (a->keysym + j) >= b->keysym && (a->keysym + j) <= (b->keysym + b->range) && compare_priority (a, b) <= 0); // is effectively the same 442 (a->keysym + j) >= b->keysym && (a->keysym + j) <= (b->keysym + b->range) && compare_priority (a, b) <= 0); // is effectively the same or a closer match
429 } 443 }
430 } 444 }
431#endif 445#endif
432} 446}
433 447
434int 448int
435keyboard_manager::find_keysym (KeySym keysym, unsigned int state) 449keyboard_manager::find_keysym (KeySym keysym, unsigned int state)
436{ 450{
437 int hashkey = keysym & KEYSYM_HASH_MASK; 451 int hashkey = keysym & KEYSYM_HASH_MASK;
438 unsigned int index = hash [hashkey]; 452 unsigned int index = hash [hashkey];
453 unsigned int end = hashkey < KEYSYM_HASH_BUDGETS - 1
454 ? hash [hashkey + 1]
455 : keymap.size ();
439 456
440 for (; index < keymap.size (); ++index) 457 for (; index < end; ++index)
441 { 458 {
442 keysym_t *key = keymap [index]; 459 keysym_t *key = keymap [index];
443 460
444 if (key->keysym <= keysym && key->keysym + key->range > keysym 461 if (key->keysym <= keysym && keysym < key->keysym + key->range
445 // match only the specified bits in state and ignore others 462 // match only the specified bits in state and ignore others
446 && (key->state & state) == key->state) 463 && (key->state & state) == key->state)
447 return index; 464 return index;
448 else if (key->keysym > keysym && key->range == 1)
449 return -1;
450 } 465 }
451 466
452 return -1; 467 return -1;
453} 468}
454 469

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