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Comparing rxvt-unicode/src/keyboard.C (file contents):
Revision 1.6 by root, Sun Jan 16 19:20:30 2005 UTC vs.
Revision 1.17 by root, Mon Nov 28 19:35:04 2005 UTC

1#include "../config.h" 1#include "../config.h"
2#include "rxvt.h" 2#include "rxvt.h"
3
4#ifdef KEYSYM_RESOURCE
5
6#include <cstring>
7
3#include "keyboard.h" 8#include "keyboard.h"
4#include "command.h" 9#include "command.h"
5#include <string.h>
6#include <X11/X.h>
7 10
8#ifdef KEYSYM_RESOURCE 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 */
9 42
43#if STOCK_KEYMAP
10//////////////////////////////////////////////////////////////////////////////// 44////////////////////////////////////////////////////////////////////////////////
11// default keycode translation map and keyevent handlers 45// default keycode translation map and keyevent handlers
12 46
13keysym_t keyboard_manager::stock_keymap[] = { 47keysym_t keyboard_manager::stock_keymap[] = {
14 /* examples */ 48 /* examples */
15 /* keysym, state, range, handler, str */ 49 /* keysym, state, range, handler, str */
16//{XK_ISO_Left_Tab, 0, 1, NORMAL, "\033[Z"}, 50//{XK_ISO_Left_Tab, 0, 1, keysym_t::NORMAL, "\033[Z"},
17//{ 'a', 0, 26, RANGE_META8, "a" "%c"}, 51//{ 'a', 0, 26, keysym_t::RANGE_META8, "a" "%c"},
18//{ 'a', ControlMask, 26, RANGE_META8, "" "%c"}, 52//{ 'a', ControlMask, 26, keysym_t::RANGE_META8, "" "%c"},
19//{ XK_Left, 0, 4, LIST, "DACBZ" "\033[Z"}, 53//{ XK_Left, 0, 4, keysym_t::LIST, ".\033[.DACB."},
20//{ XK_Left, ShiftMask, 4, LIST, "dacbZ" "\033[Z"}, 54//{ XK_Left, ShiftMask, 4, keysym_t::LIST, ".\033[.dacb."},
21//{ XK_Left, ControlMask, 4, LIST, "dacbZ" "\033OZ"}, 55//{ XK_Left, ControlMask, 4, keysym_t::LIST, ".\033O.dacb."},
22//{ XK_Tab, ControlMask, 1, NORMAL, "\033<C-Tab>"}, 56//{ XK_Tab, ControlMask, 1, keysym_t::NORMAL, "\033<C-Tab>"},
23//{ XK_apostrophe, ControlMask, 1, NORMAL, "\033<C-'>"}, 57//{ XK_apostrophe, ControlMask, 1, keysym_t::NORMAL, "\033<C-'>"},
24//{ XK_slash, ControlMask, 1, NORMAL, "\033<C-/>"}, 58//{ XK_slash, ControlMask, 1, keysym_t::NORMAL, "\033<C-/>"},
25//{ XK_semicolon, ControlMask, 1, NORMAL, "\033<C-;>"}, 59//{ XK_semicolon, ControlMask, 1, keysym_t::NORMAL, "\033<C-;>"},
26//{ XK_grave, ControlMask, 1, NORMAL, "\033<C-`>"}, 60//{ XK_grave, ControlMask, 1, keysym_t::NORMAL, "\033<C-`>"},
27//{ XK_comma, ControlMask, 1, NORMAL, "\033<C-\054>"}, 61//{ XK_comma, ControlMask, 1, keysym_t::NORMAL, "\033<C-\054>"},
28//{ XK_Return, ControlMask, 1, NORMAL, "\033<C-Return>"}, 62//{ XK_Return, ControlMask, 1, keysym_t::NORMAL, "\033<C-Return>"},
29//{ XK_Return, ShiftMask, 1, NORMAL, "\033<S-Return>"}, 63//{ XK_Return, ShiftMask, 1, keysym_t::NORMAL, "\033<S-Return>"},
30//{ ' ', ShiftMask, 1, NORMAL, "\033<S-Space>"}, 64//{ ' ', ShiftMask, 1, keysym_t::NORMAL, "\033<S-Space>"},
31//{ '.', ControlMask, 1, NORMAL, "\033<C-.>"}, 65//{ '.', ControlMask, 1, keysym_t::NORMAL, "\033<C-.>"},
32//{ '0', ControlMask, 10, RANGE, "0" "\033<C-%c>"}, 66//{ '0', ControlMask, 10, keysym_t::RANGE, "0" "\033<C-%c>"},
33//{ '0', MetaMask|ControlMask, 10, RANGE, "0" "\033<M-C-%c>"}, 67//{ '0', MetaMask|ControlMask, 10, keysym_t::RANGE, "0" "\033<M-C-%c>"},
34//{ 'a', MetaMask|ControlMask, 26, RANGE, "a" "\033<M-C-%c>"}, 68//{ 'a', MetaMask|ControlMask, 26, keysym_t::RANGE, "a" "\033<M-C-%c>"},
35}; 69};
70#endif
36 71
37static void 72static void
38output_string (rxvt_term *rt, const char *str) 73output_string (rxvt_term *rt, const char *str)
39{ 74{
40 assert (rt && str);
41
42 if (strncmp (str, "proto:", 6) == 0) 75 if (strncmp (str, "command:", 8) == 0)
43 rt->cmd_write ((unsigned char *)str + 6, strlen (str) - 6); 76 rt->cmd_write ((unsigned char *)str + 8, strlen (str) - 8);
44 else 77 else
45 rt->tt_write ((unsigned char *)str, strlen (str)); 78 rt->tt_write ((unsigned char *)str, strlen (str));
46} 79}
47 80
48static void 81static void
… …
68} 101}
69 102
70static int 103static int
71format_keyrange_string (const char *str, int keysym_offset, char *buf, int bufsize) 104format_keyrange_string (const char *str, int keysym_offset, char *buf, int bufsize)
72{ 105{
73 int len = snprintf (buf, bufsize, str + 1, keysym_offset + str [0]); 106 size_t len = snprintf (buf, bufsize, str + 1, keysym_offset + str [0]);
74 107
75 if (len >= bufsize) 108 if (len >= (size_t)bufsize)
76 {
77 rxvt_warn ("buffer overflowed!\n");
78 *buf = 0;
79 } 109 {
80 else if (len < 0) 110 rxvt_warn ("format_keyrange_string: formatting failed, ignoring key.\n");
81 {
82 rxvt_warn ("keyrange_translator(), snprintf error");
83 *buf = 0; 111 *buf = 0;
84 } 112 }
85 113
86 return len; 114 return len;
87} 115}
88 116
89//////////////////////////////////////////////////////////////////////////////// 117////////////////////////////////////////////////////////////////////////////////
90// return: #bits of '1' 118// return: #bits of '1'
119#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 3)
120# define bitcount(n) (__extension__ ({ uint32_t n__ = (n); __builtin_popcount (n__); }))
121#else
91static int 122static int
92bitcount (unsigned int n) 123bitcount (uint16_t n)
93{ 124{
94 int i; 125 int i;
95 126
96 for (i = 0; n; ++i, n &= (n - 1)) 127 for (i = 0; n; ++i, n &= n - 1)
97 ; 128 ;
98 129
99 return i; 130 return i;
100} 131}
132#endif
101 133
102// return: priority_of_a - priority_of_b 134// return: priority_of_a - priority_of_b
103static int 135static int
104compare_priority (keysym_t *a, keysym_t *b) 136compare_priority (keysym_t *a, keysym_t *b)
105{ 137{
106 assert (a && b);
107
108 // (the more '1's in state; the less range): the greater priority 138 // (the more '1's in state; the less range): the greater priority
109 int ca = bitcount (a->state /* & OtherModMask */); 139 int ca = bitcount (a->state /* & OtherModMask */);
110 int cb = bitcount (b->state /* & OtherModMask */); 140 int cb = bitcount (b->state /* & OtherModMask */);
111 141
112 if (ca != cb) 142 if (ca != cb)
… …
157// the string 'trans' is copied to an internal managed buffer, 187// the string 'trans' is copied to an internal managed buffer,
158// so the caller can free memory of 'trans' at any time. 188// so the caller can free memory of 'trans' at any time.
159void 189void
160keyboard_manager::register_user_translation (KeySym keysym, unsigned int state, const char *trans) 190keyboard_manager::register_user_translation (KeySym keysym, unsigned int state, const char *trans)
161{ 191{
162 assert (trans);
163
164 keysym_t *key = new keysym_t; 192 keysym_t *key = new keysym_t;
165 wchar_t *wc = rxvt_mbstowcs (trans); 193 wchar_t *wc = rxvt_mbstowcs (trans);
166 const char *translation = rxvt_wcstoutf8 (wc); 194 const char *translation = rxvt_wcstoutf8 (wc);
167 free (wc); 195 free (wc);
168 196
… …
185 key->range = suffix - middle - 1; 213 key->range = suffix - middle - 1;
186 214
187 strcpy (translation, translation + 4); 215 strcpy (translation, translation + 4);
188 } 216 }
189 else 217 else
190 {
191 key->range = 1;
192 rxvt_warn ("cannot parse list-type keysym '%s', treating as normal keysym.\n", translation); 218 rxvt_warn ("cannot parse list-type keysym '%s', treating as normal keysym.\n", translation);
193 } 219 }
194 } 220 else if (strncmp (translation, "builtin:", 8) == 0)
195 else 221 key->type = keysym_t::BUILTIN;
196 222
197 user_keymap.push_back (key); 223 user_keymap.push_back (key);
198 user_translations.push_back (translation); 224 user_translations.push_back (translation);
199 register_keymap (key); 225 register_keymap (key);
200 } 226 }
… …
207} 233}
208 234
209void 235void
210keyboard_manager::register_keymap (keysym_t *key) 236keyboard_manager::register_keymap (keysym_t *key)
211{ 237{
212 assert (key);
213 assert (key->range >= 1);
214
215 if (keymap.size () == keymap.capacity ()) 238 if (keymap.size () == keymap.capacity ())
216 keymap.reserve (keymap.size () * 2); 239 keymap.reserve (keymap.size () * 2);
217 240
218 keymap.push_back (key); 241 keymap.push_back (key);
219 hash[0] = 3; 242 hash[0] = 3;
220} 243}
221 244
222void 245void
223keyboard_manager::register_done () 246keyboard_manager::register_done ()
224{ 247{
248#if STOCK_KEYMAP
225 unsigned int i, n = sizeof (stock_keymap) / sizeof (keysym_t); 249 int n = sizeof (stock_keymap) / sizeof (keysym_t);
226 250
251 //TODO: shield against repeated calls and empty keymap
227 if (keymap.back () != &stock_keymap[n - 1]) 252 //if (keymap.back () != &stock_keymap[n - 1])
228 for (i = 0; i < n; ++i) 253 for (int i = 0; i < n; ++i)
229 register_keymap (&stock_keymap[i]); 254 register_keymap (&stock_keymap[i]);
255#endif
230 256
231 purge_duplicate_keymap (); 257 purge_duplicate_keymap ();
232 258
233 setup_hash (); 259 setup_hash ();
234} 260}
235 261
236bool 262bool
237keyboard_manager::dispatch (rxvt_term *term, KeySym keysym, unsigned int state) 263keyboard_manager::dispatch (rxvt_term *term, KeySym keysym, unsigned int state)
238{ 264{
239 assert (hash[0] == 0 && "register_done() need to be called"); 265 assert (hash[0] == 0 && "register_done() need to be called");
266
267 state &= OtherModMask; // mask out uninteresting modifiers
240 268
241 if (state & term->ModMetaMask) state |= MetaMask; 269 if (state & term->ModMetaMask) state |= MetaMask;
242 if (state & term->ModNumLockMask) state |= NumLockMask; 270 if (state & term->ModNumLockMask) state |= NumLockMask;
243 if (state & term->ModLevel3Mask) state |= Level3Mask; 271 if (state & term->ModLevel3Mask) state |= Level3Mask;
244 272
… …
247 275
248 int index = find_keysym (keysym, state); 276 int index = find_keysym (keysym, state);
249 277
250 if (index >= 0) 278 if (index >= 0)
251 { 279 {
252 assert (term && keymap [index]);
253 const keysym_t &key = *keymap [index]; 280 const keysym_t &key = *keymap [index];
254 281
282 if (key.type != keysym_t::BUILTIN)
283 {
255 int keysym_offset = keysym - key.keysym; 284 int keysym_offset = keysym - key.keysym;
256 285
257 wchar_t *wc = rxvt_utf8towcs (key.str); 286 wchar_t *wc = rxvt_utf8towcs (key.str);
258 char *str = rxvt_wcstombs (wc); 287 char *str = rxvt_wcstombs (wc);
259 // TODO: do translations, unescaping etc, here (allow \u escape etc.) 288 // TODO: do (some) translations, unescaping etc, here (allow \u escape etc.)
260 free (wc); 289 free (wc);
261 290
262 switch (key.type) 291 switch (key.type)
263 {
264 case keysym_t::NORMAL:
265 output_string (term, str);
266 break;
267
268 case keysym_t::RANGE:
269 { 292 {
293 case keysym_t::NORMAL:
294 output_string (term, str);
295 break;
296
297 case keysym_t::RANGE:
298 {
270 char buf[STRING_MAX]; 299 char buf[STRING_MAX];
271 300
272 if (format_keyrange_string (str, keysym_offset, buf, sizeof (buf)) > 0) 301 if (format_keyrange_string (str, keysym_offset, buf, sizeof (buf)) > 0)
302 output_string (term, buf);
303 }
304 break;
305
306 case keysym_t::RANGE_META8:
307 {
308 int len;
309 char buf[STRING_MAX];
310
311 len = format_keyrange_string (str, keysym_offset, buf, sizeof (buf));
312 if (len > 0)
313 output_string_meta8 (term, state, buf, len);
314 }
315 break;
316
317 case keysym_t::LIST:
318 {
319 char buf[STRING_MAX];
320
321 char *prefix, *middle, *suffix;
322
323 prefix = str;
324 middle = strchr (prefix + 1, *prefix);
325 suffix = strrchr (middle + 1, *prefix);
326
327 memcpy (buf, prefix + 1, middle - prefix - 1);
328 buf [middle - prefix - 1] = middle [keysym_offset + 1];
329 strcpy (buf + (middle - prefix), suffix + 1);
330
273 output_string (term, buf); 331 output_string (term, buf);
332 }
333 break;
274 } 334 }
275 break;
276 335
277 case keysym_t::RANGE_META8:
278 {
279 int len;
280 char buf[STRING_MAX];
281
282 len = format_keyrange_string (str, keysym_offset, buf, sizeof (buf));
283 if (len > 0)
284 output_string_meta8 (term, state, buf, len);
285 }
286 break;
287
288 case keysym_t::LIST:
289 {
290 char buf[STRING_MAX];
291
292 char *prefix, *middle, *suffix;
293
294 prefix = str;
295 middle = strchr (prefix + 1, *prefix);
296 suffix = strrchr (middle + 1, *prefix);
297
298 memcpy (buf, prefix + 1, middle - prefix - 1);
299 buf [middle - prefix - 1] = middle [keysym_offset + 1];
300 strcpy (buf + (middle - prefix), suffix + 1);
301
302 output_string (term, buf);
303 }
304 break;
305 }
306
307 free (str); 336 free (str);
308 337
309 return true; 338 return true;
310 } 339 }
311 else
312 { 340 }
313 // fprintf(stderr,"[%x:%x]",state,keysym); 341
314 return false; 342 return false;
315 }
316} 343}
317 344
318// purge duplicate keymap entries 345// purge duplicate keymap entries
319void keyboard_manager::purge_duplicate_keymap () 346void keyboard_manager::purge_duplicate_keymap ()
320{ 347{
… …
330 if (i < keymap.size ()) 357 if (i < keymap.size ())
331 { 358 {
332 keymap[i] = keymap.back (); 359 keymap[i] = keymap.back ();
333 keymap.pop_back (); 360 keymap.pop_back ();
334 } 361 }
362
335 break; 363 break;
336 } 364 }
337 } 365 }
338 } 366 }
339} 367}
… …
347 uint16_t hash_budget_counter[KEYSYM_HASH_BUDGETS]; // #elements in each budget 375 uint16_t hash_budget_counter[KEYSYM_HASH_BUDGETS]; // #elements in each budget
348 376
349 memset (hash_budget_size, 0, sizeof (hash_budget_size)); 377 memset (hash_budget_size, 0, sizeof (hash_budget_size));
350 memset (hash_budget_counter, 0, sizeof (hash_budget_counter)); 378 memset (hash_budget_counter, 0, sizeof (hash_budget_counter));
351 379
352 // count keysyms for corresponding hash budgets 380 // determine hash bucket size
353 for (i = 0; i < keymap.size (); ++i) 381 for (i = 0; i < keymap.size (); ++i)
382 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j)
354 { 383 {
355 assert (keymap [i]);
356 hashkey = (keymap [i]->keysym & KEYSYM_HASH_MASK); 384 hashkey = (keymap [i]->keysym + j) & KEYSYM_HASH_MASK;
357 ++hash_budget_size [hashkey]; 385 ++hash_budget_size [hashkey];
358 }
359
360 // keysym A with range>1 is counted one more time for
361 // every keysym B lies in its range
362 for (i = 0; i < keymap.size (); ++i)
363 {
364 if (keymap[i]->range > 1)
365 {
366 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j > 0; --j)
367 {
368 hashkey = ((keymap [i]->keysym + j) & KEYSYM_HASH_MASK);
369 if (hash_budget_size [hashkey])
370 ++hash_budget_size [hashkey];
371 }
372 } 386 }
373 }
374 387
375 // now we know the size of each budget 388 // now we know the size of each budget
376 // compute the index of each budget 389 // compute the index of each budget
377 hash [0] = 0; 390 hash [0] = 0;
378 for (index = 0, i = 1; i < KEYSYM_HASH_BUDGETS; ++i) 391 for (index = 0, i = 1; i < KEYSYM_HASH_BUDGETS; ++i)
379 { 392 {
380 index += hash_budget_size [i - 1]; 393 index += hash_budget_size [i - 1];
381 hash[i] = (hash_budget_size [i] ? index : hash [i - 1]); 394 hash [i] = index;
382 } 395 }
383 396
384 // and allocate just enough space 397 // and allocate just enough space
385 //sorted_keymap.reserve (hash[i - 1] + hash_budget_size[i - 1]);
386 sorted_keymap.insert (sorted_keymap.begin (), index + hash_budget_size [i - 1], 0); 398 sorted_keymap.insert (sorted_keymap.begin (), index + hash_budget_size [i - 1], 0);
387 399
388 // fill in sorted_keymap 400 // fill in sorted_keymap
389 // it is sorted in each budget 401 // it is sorted in each budget
390 for (i = 0; i < keymap.size (); ++i) 402 for (i = 0; i < keymap.size (); ++i)
391 {
392 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j) 403 for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j)
393 { 404 {
394 hashkey = ((keymap [i]->keysym + j) & KEYSYM_HASH_MASK); 405 hashkey = (keymap [i]->keysym + j) & KEYSYM_HASH_MASK;
395 406
396 if (hash_budget_size [hashkey])
397 {
398 index = hash [hashkey] + hash_budget_counter [hashkey]; 407 index = hash [hashkey] + hash_budget_counter [hashkey];
399 408
400 while (index > hash [hashkey] 409 while (index > hash [hashkey]
401 && compare_priority (keymap [i], sorted_keymap [index - 1]) > 0) 410 && compare_priority (keymap [i], sorted_keymap [index - 1]) > 0)
402 { 411 {
403 sorted_keymap [index] = sorted_keymap [index - 1]; 412 sorted_keymap [index] = sorted_keymap [index - 1];
404 --index; 413 --index;
405 } 414 }
406 415
407 sorted_keymap [index] = keymap [i]; 416 sorted_keymap [index] = keymap [i];
408 ++hash_budget_counter [hashkey]; 417 ++hash_budget_counter [hashkey];
409 }
410 } 418 }
411 }
412 419
413 keymap.swap (sorted_keymap); 420 keymap.swap (sorted_keymap);
414 421
415#if defined (DEBUG_STRICT) || defined (DEBUG_KEYBOARD) 422#if defined (DEBUG_STRICT) || defined (DEBUG_KEYBOARD)
416 // check for invariants 423 // check for invariants
… …
432 for (i = 0; i < sorted_keymap.size (); ++i) 439 for (i = 0; i < sorted_keymap.size (); ++i)
433 { 440 {
434 keysym_t *a = sorted_keymap[i]; 441 keysym_t *a = sorted_keymap[i];
435 for (int j = 0; j < a->range; ++j) 442 for (int j = 0; j < a->range; ++j)
436 { 443 {
437 int index = find_keysym (a->keysym + j, a->state & OtherModMask); 444 int index = find_keysym (a->keysym + j, a->state);
438 445
439 assert (index >= 0); 446 assert (index >= 0);
440 keysym_t *b = keymap [index]; 447 keysym_t *b = keymap [index];
441 assert (i == (signed) index || // the normally expected result 448 assert (i == (signed) index || // the normally expected result
442 (a->keysym + j) >= b->keysym && (a->keysym + j) <= (b->keysym + b->range) && compare_priority (a, b) <= 0); // is effectively the same 449 (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
443 } 450 }
444 } 451 }
445#endif 452#endif
446} 453}
447 454
448int 455int
449keyboard_manager::find_keysym (KeySym keysym, unsigned int state) 456keyboard_manager::find_keysym (KeySym keysym, unsigned int state)
450{ 457{
451 int hashkey = keysym & KEYSYM_HASH_MASK; 458 int hashkey = keysym & KEYSYM_HASH_MASK;
452 unsigned int index = hash [hashkey]; 459 unsigned int index = hash [hashkey];
460 unsigned int end = hashkey < KEYSYM_HASH_BUDGETS - 1
461 ? hash [hashkey + 1]
462 : keymap.size ();
453 463
454 for (; index < keymap.size (); ++index) 464 for (; index < end; ++index)
455 { 465 {
456 keysym_t *key = keymap [index]; 466 keysym_t *key = keymap [index];
457 assert (key);
458 467
459 if (key->keysym <= keysym && key->keysym + key->range > keysym 468 if (key->keysym <= keysym && keysym < key->keysym + key->range
460 // match only the specified bits in state and ignore others 469 // match only the specified bits in state and ignore others
461 && (key->state & OtherModMask) == (key->state & state)) 470 && (key->state & state) == key->state)
462 return index; 471 return index;
463 else if (key->keysym > keysym && key->range == 1)
464 return -1;
465 } 472 }
466 473
467 return -1; 474 return -1;
468} 475}
469 476

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