Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> | |
3 | * Released under the terms of the GNU GPL v2.0. | |
4 | */ | |
5 | ||
6 | #include <ctype.h> | |
7 | #include <stdlib.h> | |
8 | #include <string.h> | |
9 | #include <regex.h> | |
10 | #include <sys/utsname.h> | |
11 | ||
12 | #define LKC_DIRECT_LINK | |
13 | #include "lkc.h" | |
14 | ||
15 | struct symbol symbol_yes = { | |
16 | .name = "y", | |
17 | .curr = { "y", yes }, | |
18 | .flags = SYMBOL_YES|SYMBOL_VALID, | |
19 | }, symbol_mod = { | |
20 | .name = "m", | |
21 | .curr = { "m", mod }, | |
22 | .flags = SYMBOL_MOD|SYMBOL_VALID, | |
23 | }, symbol_no = { | |
24 | .name = "n", | |
25 | .curr = { "n", no }, | |
26 | .flags = SYMBOL_NO|SYMBOL_VALID, | |
27 | }, symbol_empty = { | |
28 | .name = "", | |
29 | .curr = { "", no }, | |
30 | .flags = SYMBOL_VALID, | |
31 | }; | |
32 | ||
33 | int sym_change_count; | |
34 | struct symbol *modules_sym; | |
35 | tristate modules_val; | |
36 | ||
37 | void sym_add_default(struct symbol *sym, const char *def) | |
38 | { | |
39 | struct property *prop = prop_alloc(P_DEFAULT, sym); | |
40 | ||
41 | prop->expr = expr_alloc_symbol(sym_lookup(def, 1)); | |
42 | } | |
43 | ||
44 | void sym_init(void) | |
45 | { | |
46 | struct symbol *sym; | |
47 | struct utsname uts; | |
48 | char *p; | |
49 | static bool inited = false; | |
50 | ||
51 | if (inited) | |
52 | return; | |
53 | inited = true; | |
54 | ||
55 | uname(&uts); | |
56 | ||
57 | sym = sym_lookup("ARCH", 0); | |
58 | sym->type = S_STRING; | |
59 | sym->flags |= SYMBOL_AUTO; | |
60 | p = getenv("ARCH"); | |
61 | if (p) | |
62 | sym_add_default(sym, p); | |
63 | ||
64 | sym = sym_lookup("KERNELRELEASE", 0); | |
65 | sym->type = S_STRING; | |
66 | sym->flags |= SYMBOL_AUTO; | |
67 | p = getenv("KERNELRELEASE"); | |
68 | if (p) | |
69 | sym_add_default(sym, p); | |
70 | ||
71 | sym = sym_lookup("UNAME_RELEASE", 0); | |
72 | sym->type = S_STRING; | |
73 | sym->flags |= SYMBOL_AUTO; | |
74 | sym_add_default(sym, uts.release); | |
75 | } | |
76 | ||
77 | enum symbol_type sym_get_type(struct symbol *sym) | |
78 | { | |
79 | enum symbol_type type = sym->type; | |
80 | ||
81 | if (type == S_TRISTATE) { | |
82 | if (sym_is_choice_value(sym) && sym->visible == yes) | |
83 | type = S_BOOLEAN; | |
84 | else if (modules_val == no) | |
85 | type = S_BOOLEAN; | |
86 | } | |
87 | return type; | |
88 | } | |
89 | ||
90 | const char *sym_type_name(enum symbol_type type) | |
91 | { | |
92 | switch (type) { | |
93 | case S_BOOLEAN: | |
94 | return "boolean"; | |
95 | case S_TRISTATE: | |
96 | return "tristate"; | |
97 | case S_INT: | |
98 | return "integer"; | |
99 | case S_HEX: | |
100 | return "hex"; | |
101 | case S_STRING: | |
102 | return "string"; | |
103 | case S_UNKNOWN: | |
104 | return "unknown"; | |
105 | case S_OTHER: | |
106 | break; | |
107 | } | |
108 | return "???"; | |
109 | } | |
110 | ||
111 | struct property *sym_get_choice_prop(struct symbol *sym) | |
112 | { | |
113 | struct property *prop; | |
114 | ||
115 | for_all_choices(sym, prop) | |
116 | return prop; | |
117 | return NULL; | |
118 | } | |
119 | ||
120 | struct property *sym_get_default_prop(struct symbol *sym) | |
121 | { | |
122 | struct property *prop; | |
123 | ||
124 | for_all_defaults(sym, prop) { | |
125 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
126 | if (prop->visible.tri != no) | |
127 | return prop; | |
128 | } | |
129 | return NULL; | |
130 | } | |
131 | ||
132 | struct property *sym_get_range_prop(struct symbol *sym) | |
133 | { | |
134 | struct property *prop; | |
135 | ||
136 | for_all_properties(sym, prop, P_RANGE) { | |
137 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
138 | if (prop->visible.tri != no) | |
139 | return prop; | |
140 | } | |
141 | return NULL; | |
142 | } | |
143 | ||
4cf3cbe2 RZ |
144 | static int sym_get_range_val(struct symbol *sym, int base) |
145 | { | |
146 | sym_calc_value(sym); | |
147 | switch (sym->type) { | |
148 | case S_INT: | |
149 | base = 10; | |
150 | break; | |
151 | case S_HEX: | |
152 | base = 16; | |
153 | break; | |
154 | default: | |
155 | break; | |
156 | } | |
157 | return strtol(sym->curr.val, NULL, base); | |
158 | } | |
159 | ||
160 | static void sym_validate_range(struct symbol *sym) | |
161 | { | |
162 | struct property *prop; | |
163 | int base, val, val2; | |
164 | char str[64]; | |
165 | ||
166 | switch (sym->type) { | |
167 | case S_INT: | |
168 | base = 10; | |
169 | break; | |
170 | case S_HEX: | |
171 | base = 16; | |
172 | break; | |
173 | default: | |
174 | return; | |
175 | } | |
176 | prop = sym_get_range_prop(sym); | |
177 | if (!prop) | |
178 | return; | |
179 | val = strtol(sym->curr.val, NULL, base); | |
180 | val2 = sym_get_range_val(prop->expr->left.sym, base); | |
181 | if (val >= val2) { | |
182 | val2 = sym_get_range_val(prop->expr->right.sym, base); | |
183 | if (val <= val2) | |
184 | return; | |
185 | } | |
186 | if (sym->type == S_INT) | |
187 | sprintf(str, "%d", val2); | |
188 | else | |
189 | sprintf(str, "0x%x", val2); | |
190 | sym->curr.val = strdup(str); | |
191 | } | |
192 | ||
1da177e4 LT |
193 | static void sym_calc_visibility(struct symbol *sym) |
194 | { | |
195 | struct property *prop; | |
196 | tristate tri; | |
197 | ||
198 | /* any prompt visible? */ | |
199 | tri = no; | |
200 | for_all_prompts(sym, prop) { | |
201 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
202 | tri = E_OR(tri, prop->visible.tri); | |
203 | } | |
204 | if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) | |
205 | tri = yes; | |
206 | if (sym->visible != tri) { | |
207 | sym->visible = tri; | |
208 | sym_set_changed(sym); | |
209 | } | |
210 | if (sym_is_choice_value(sym)) | |
211 | return; | |
212 | tri = no; | |
213 | if (sym->rev_dep.expr) | |
214 | tri = expr_calc_value(sym->rev_dep.expr); | |
215 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) | |
216 | tri = yes; | |
217 | if (sym->rev_dep.tri != tri) { | |
218 | sym->rev_dep.tri = tri; | |
219 | sym_set_changed(sym); | |
220 | } | |
221 | } | |
222 | ||
223 | static struct symbol *sym_calc_choice(struct symbol *sym) | |
224 | { | |
225 | struct symbol *def_sym; | |
226 | struct property *prop; | |
227 | struct expr *e; | |
228 | ||
229 | /* is the user choice visible? */ | |
230 | def_sym = sym->user.val; | |
231 | if (def_sym) { | |
232 | sym_calc_visibility(def_sym); | |
233 | if (def_sym->visible != no) | |
234 | return def_sym; | |
235 | } | |
236 | ||
237 | /* any of the defaults visible? */ | |
238 | for_all_defaults(sym, prop) { | |
239 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
240 | if (prop->visible.tri == no) | |
241 | continue; | |
242 | def_sym = prop_get_symbol(prop); | |
243 | sym_calc_visibility(def_sym); | |
244 | if (def_sym->visible != no) | |
245 | return def_sym; | |
246 | } | |
247 | ||
248 | /* just get the first visible value */ | |
249 | prop = sym_get_choice_prop(sym); | |
250 | for (e = prop->expr; e; e = e->left.expr) { | |
251 | def_sym = e->right.sym; | |
252 | sym_calc_visibility(def_sym); | |
253 | if (def_sym->visible != no) | |
254 | return def_sym; | |
255 | } | |
256 | ||
257 | /* no choice? reset tristate value */ | |
258 | sym->curr.tri = no; | |
259 | return NULL; | |
260 | } | |
261 | ||
262 | void sym_calc_value(struct symbol *sym) | |
263 | { | |
264 | struct symbol_value newval, oldval; | |
265 | struct property *prop; | |
266 | struct expr *e; | |
267 | ||
268 | if (!sym) | |
269 | return; | |
270 | ||
271 | if (sym->flags & SYMBOL_VALID) | |
272 | return; | |
273 | sym->flags |= SYMBOL_VALID; | |
274 | ||
275 | oldval = sym->curr; | |
276 | ||
277 | switch (sym->type) { | |
278 | case S_INT: | |
279 | case S_HEX: | |
280 | case S_STRING: | |
281 | newval = symbol_empty.curr; | |
282 | break; | |
283 | case S_BOOLEAN: | |
284 | case S_TRISTATE: | |
285 | newval = symbol_no.curr; | |
286 | break; | |
287 | default: | |
288 | sym->curr.val = sym->name; | |
289 | sym->curr.tri = no; | |
290 | return; | |
291 | } | |
292 | if (!sym_is_choice_value(sym)) | |
293 | sym->flags &= ~SYMBOL_WRITE; | |
294 | ||
295 | sym_calc_visibility(sym); | |
296 | ||
297 | /* set default if recursively called */ | |
298 | sym->curr = newval; | |
299 | ||
300 | switch (sym_get_type(sym)) { | |
301 | case S_BOOLEAN: | |
302 | case S_TRISTATE: | |
303 | if (sym_is_choice_value(sym) && sym->visible == yes) { | |
304 | prop = sym_get_choice_prop(sym); | |
305 | newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; | |
306 | } else if (E_OR(sym->visible, sym->rev_dep.tri) != no) { | |
307 | sym->flags |= SYMBOL_WRITE; | |
308 | if (sym_has_value(sym)) | |
309 | newval.tri = sym->user.tri; | |
310 | else if (!sym_is_choice(sym)) { | |
311 | prop = sym_get_default_prop(sym); | |
312 | if (prop) | |
313 | newval.tri = expr_calc_value(prop->expr); | |
314 | } | |
315 | newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri); | |
316 | } else if (!sym_is_choice(sym)) { | |
317 | prop = sym_get_default_prop(sym); | |
318 | if (prop) { | |
319 | sym->flags |= SYMBOL_WRITE; | |
320 | newval.tri = expr_calc_value(prop->expr); | |
321 | } | |
322 | } | |
323 | if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) | |
324 | newval.tri = yes; | |
325 | break; | |
326 | case S_STRING: | |
327 | case S_HEX: | |
328 | case S_INT: | |
329 | if (sym->visible != no) { | |
330 | sym->flags |= SYMBOL_WRITE; | |
331 | if (sym_has_value(sym)) { | |
332 | newval.val = sym->user.val; | |
333 | break; | |
334 | } | |
335 | } | |
336 | prop = sym_get_default_prop(sym); | |
337 | if (prop) { | |
338 | struct symbol *ds = prop_get_symbol(prop); | |
339 | if (ds) { | |
340 | sym->flags |= SYMBOL_WRITE; | |
341 | sym_calc_value(ds); | |
342 | newval.val = ds->curr.val; | |
343 | } | |
344 | } | |
345 | break; | |
346 | default: | |
347 | ; | |
348 | } | |
349 | ||
350 | sym->curr = newval; | |
351 | if (sym_is_choice(sym) && newval.tri == yes) | |
352 | sym->curr.val = sym_calc_choice(sym); | |
4cf3cbe2 | 353 | sym_validate_range(sym); |
1da177e4 LT |
354 | |
355 | if (memcmp(&oldval, &sym->curr, sizeof(oldval))) | |
356 | sym_set_changed(sym); | |
357 | if (modules_sym == sym) | |
358 | modules_val = modules_sym->curr.tri; | |
359 | ||
360 | if (sym_is_choice(sym)) { | |
361 | int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE); | |
362 | prop = sym_get_choice_prop(sym); | |
363 | for (e = prop->expr; e; e = e->left.expr) { | |
364 | e->right.sym->flags |= flags; | |
365 | if (flags & SYMBOL_CHANGED) | |
366 | sym_set_changed(e->right.sym); | |
367 | } | |
368 | } | |
369 | } | |
370 | ||
371 | void sym_clear_all_valid(void) | |
372 | { | |
373 | struct symbol *sym; | |
374 | int i; | |
375 | ||
376 | for_all_symbols(i, sym) | |
377 | sym->flags &= ~SYMBOL_VALID; | |
378 | sym_change_count++; | |
379 | if (modules_sym) | |
380 | sym_calc_value(modules_sym); | |
381 | } | |
382 | ||
383 | void sym_set_changed(struct symbol *sym) | |
384 | { | |
385 | struct property *prop; | |
386 | ||
387 | sym->flags |= SYMBOL_CHANGED; | |
388 | for (prop = sym->prop; prop; prop = prop->next) { | |
389 | if (prop->menu) | |
390 | prop->menu->flags |= MENU_CHANGED; | |
391 | } | |
392 | } | |
393 | ||
394 | void sym_set_all_changed(void) | |
395 | { | |
396 | struct symbol *sym; | |
397 | int i; | |
398 | ||
399 | for_all_symbols(i, sym) | |
400 | sym_set_changed(sym); | |
401 | } | |
402 | ||
403 | bool sym_tristate_within_range(struct symbol *sym, tristate val) | |
404 | { | |
405 | int type = sym_get_type(sym); | |
406 | ||
407 | if (sym->visible == no) | |
408 | return false; | |
409 | ||
410 | if (type != S_BOOLEAN && type != S_TRISTATE) | |
411 | return false; | |
412 | ||
413 | if (type == S_BOOLEAN && val == mod) | |
414 | return false; | |
415 | if (sym->visible <= sym->rev_dep.tri) | |
416 | return false; | |
417 | if (sym_is_choice_value(sym) && sym->visible == yes) | |
418 | return val == yes; | |
419 | return val >= sym->rev_dep.tri && val <= sym->visible; | |
420 | } | |
421 | ||
422 | bool sym_set_tristate_value(struct symbol *sym, tristate val) | |
423 | { | |
424 | tristate oldval = sym_get_tristate_value(sym); | |
425 | ||
426 | if (oldval != val && !sym_tristate_within_range(sym, val)) | |
427 | return false; | |
428 | ||
429 | if (sym->flags & SYMBOL_NEW) { | |
430 | sym->flags &= ~SYMBOL_NEW; | |
431 | sym_set_changed(sym); | |
432 | } | |
3f23ca2b RZ |
433 | /* |
434 | * setting a choice value also resets the new flag of the choice | |
435 | * symbol and all other choice values. | |
436 | */ | |
1da177e4 LT |
437 | if (sym_is_choice_value(sym) && val == yes) { |
438 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
3f23ca2b RZ |
439 | struct property *prop; |
440 | struct expr *e; | |
1da177e4 LT |
441 | |
442 | cs->user.val = sym; | |
443 | cs->flags &= ~SYMBOL_NEW; | |
3f23ca2b RZ |
444 | prop = sym_get_choice_prop(cs); |
445 | for (e = prop->expr; e; e = e->left.expr) { | |
446 | if (e->right.sym->visible != no) | |
447 | e->right.sym->flags &= ~SYMBOL_NEW; | |
448 | } | |
1da177e4 LT |
449 | } |
450 | ||
451 | sym->user.tri = val; | |
452 | if (oldval != val) { | |
453 | sym_clear_all_valid(); | |
454 | if (sym == modules_sym) | |
455 | sym_set_all_changed(); | |
456 | } | |
457 | ||
458 | return true; | |
459 | } | |
460 | ||
461 | tristate sym_toggle_tristate_value(struct symbol *sym) | |
462 | { | |
463 | tristate oldval, newval; | |
464 | ||
465 | oldval = newval = sym_get_tristate_value(sym); | |
466 | do { | |
467 | switch (newval) { | |
468 | case no: | |
469 | newval = mod; | |
470 | break; | |
471 | case mod: | |
472 | newval = yes; | |
473 | break; | |
474 | case yes: | |
475 | newval = no; | |
476 | break; | |
477 | } | |
478 | if (sym_set_tristate_value(sym, newval)) | |
479 | break; | |
480 | } while (oldval != newval); | |
481 | return newval; | |
482 | } | |
483 | ||
484 | bool sym_string_valid(struct symbol *sym, const char *str) | |
485 | { | |
486 | signed char ch; | |
487 | ||
488 | switch (sym->type) { | |
489 | case S_STRING: | |
490 | return true; | |
491 | case S_INT: | |
492 | ch = *str++; | |
493 | if (ch == '-') | |
494 | ch = *str++; | |
495 | if (!isdigit(ch)) | |
496 | return false; | |
497 | if (ch == '0' && *str != 0) | |
498 | return false; | |
499 | while ((ch = *str++)) { | |
500 | if (!isdigit(ch)) | |
501 | return false; | |
502 | } | |
503 | return true; | |
504 | case S_HEX: | |
505 | if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) | |
506 | str += 2; | |
507 | ch = *str++; | |
508 | do { | |
509 | if (!isxdigit(ch)) | |
510 | return false; | |
511 | } while ((ch = *str++)); | |
512 | return true; | |
513 | case S_BOOLEAN: | |
514 | case S_TRISTATE: | |
515 | switch (str[0]) { | |
516 | case 'y': case 'Y': | |
517 | case 'm': case 'M': | |
518 | case 'n': case 'N': | |
519 | return true; | |
520 | } | |
521 | return false; | |
522 | default: | |
523 | return false; | |
524 | } | |
525 | } | |
526 | ||
527 | bool sym_string_within_range(struct symbol *sym, const char *str) | |
528 | { | |
529 | struct property *prop; | |
530 | int val; | |
531 | ||
532 | switch (sym->type) { | |
533 | case S_STRING: | |
534 | return sym_string_valid(sym, str); | |
535 | case S_INT: | |
536 | if (!sym_string_valid(sym, str)) | |
537 | return false; | |
538 | prop = sym_get_range_prop(sym); | |
539 | if (!prop) | |
540 | return true; | |
541 | val = strtol(str, NULL, 10); | |
4cf3cbe2 RZ |
542 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
543 | val <= sym_get_range_val(prop->expr->right.sym, 10); | |
1da177e4 LT |
544 | case S_HEX: |
545 | if (!sym_string_valid(sym, str)) | |
546 | return false; | |
547 | prop = sym_get_range_prop(sym); | |
548 | if (!prop) | |
549 | return true; | |
550 | val = strtol(str, NULL, 16); | |
4cf3cbe2 RZ |
551 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
552 | val <= sym_get_range_val(prop->expr->right.sym, 16); | |
1da177e4 LT |
553 | case S_BOOLEAN: |
554 | case S_TRISTATE: | |
555 | switch (str[0]) { | |
556 | case 'y': case 'Y': | |
557 | return sym_tristate_within_range(sym, yes); | |
558 | case 'm': case 'M': | |
559 | return sym_tristate_within_range(sym, mod); | |
560 | case 'n': case 'N': | |
561 | return sym_tristate_within_range(sym, no); | |
562 | } | |
563 | return false; | |
564 | default: | |
565 | return false; | |
566 | } | |
567 | } | |
568 | ||
569 | bool sym_set_string_value(struct symbol *sym, const char *newval) | |
570 | { | |
571 | const char *oldval; | |
572 | char *val; | |
573 | int size; | |
574 | ||
575 | switch (sym->type) { | |
576 | case S_BOOLEAN: | |
577 | case S_TRISTATE: | |
578 | switch (newval[0]) { | |
579 | case 'y': case 'Y': | |
580 | return sym_set_tristate_value(sym, yes); | |
581 | case 'm': case 'M': | |
582 | return sym_set_tristate_value(sym, mod); | |
583 | case 'n': case 'N': | |
584 | return sym_set_tristate_value(sym, no); | |
585 | } | |
586 | return false; | |
587 | default: | |
588 | ; | |
589 | } | |
590 | ||
591 | if (!sym_string_within_range(sym, newval)) | |
592 | return false; | |
593 | ||
594 | if (sym->flags & SYMBOL_NEW) { | |
595 | sym->flags &= ~SYMBOL_NEW; | |
596 | sym_set_changed(sym); | |
597 | } | |
598 | ||
599 | oldval = sym->user.val; | |
600 | size = strlen(newval) + 1; | |
601 | if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { | |
602 | size += 2; | |
603 | sym->user.val = val = malloc(size); | |
604 | *val++ = '0'; | |
605 | *val++ = 'x'; | |
606 | } else if (!oldval || strcmp(oldval, newval)) | |
607 | sym->user.val = val = malloc(size); | |
608 | else | |
609 | return true; | |
610 | ||
611 | strcpy(val, newval); | |
612 | free((void *)oldval); | |
613 | sym_clear_all_valid(); | |
614 | ||
615 | return true; | |
616 | } | |
617 | ||
618 | const char *sym_get_string_value(struct symbol *sym) | |
619 | { | |
620 | tristate val; | |
621 | ||
622 | switch (sym->type) { | |
623 | case S_BOOLEAN: | |
624 | case S_TRISTATE: | |
625 | val = sym_get_tristate_value(sym); | |
626 | switch (val) { | |
627 | case no: | |
628 | return "n"; | |
629 | case mod: | |
630 | return "m"; | |
631 | case yes: | |
632 | return "y"; | |
633 | } | |
634 | break; | |
635 | default: | |
636 | ; | |
637 | } | |
638 | return (const char *)sym->curr.val; | |
639 | } | |
640 | ||
641 | bool sym_is_changable(struct symbol *sym) | |
642 | { | |
643 | return sym->visible > sym->rev_dep.tri; | |
644 | } | |
645 | ||
646 | struct symbol *sym_lookup(const char *name, int isconst) | |
647 | { | |
648 | struct symbol *symbol; | |
649 | const char *ptr; | |
650 | char *new_name; | |
651 | int hash = 0; | |
652 | ||
653 | if (name) { | |
654 | if (name[0] && !name[1]) { | |
655 | switch (name[0]) { | |
656 | case 'y': return &symbol_yes; | |
657 | case 'm': return &symbol_mod; | |
658 | case 'n': return &symbol_no; | |
659 | } | |
660 | } | |
661 | for (ptr = name; *ptr; ptr++) | |
662 | hash += *ptr; | |
663 | hash &= 0xff; | |
664 | ||
665 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
666 | if (!strcmp(symbol->name, name)) { | |
667 | if ((isconst && symbol->flags & SYMBOL_CONST) || | |
668 | (!isconst && !(symbol->flags & SYMBOL_CONST))) | |
669 | return symbol; | |
670 | } | |
671 | } | |
672 | new_name = strdup(name); | |
673 | } else { | |
674 | new_name = NULL; | |
675 | hash = 256; | |
676 | } | |
677 | ||
678 | symbol = malloc(sizeof(*symbol)); | |
679 | memset(symbol, 0, sizeof(*symbol)); | |
680 | symbol->name = new_name; | |
681 | symbol->type = S_UNKNOWN; | |
682 | symbol->flags = SYMBOL_NEW; | |
683 | if (isconst) | |
684 | symbol->flags |= SYMBOL_CONST; | |
685 | ||
686 | symbol->next = symbol_hash[hash]; | |
687 | symbol_hash[hash] = symbol; | |
688 | ||
689 | return symbol; | |
690 | } | |
691 | ||
692 | struct symbol *sym_find(const char *name) | |
693 | { | |
694 | struct symbol *symbol = NULL; | |
695 | const char *ptr; | |
696 | int hash = 0; | |
697 | ||
698 | if (!name) | |
699 | return NULL; | |
700 | ||
701 | if (name[0] && !name[1]) { | |
702 | switch (name[0]) { | |
703 | case 'y': return &symbol_yes; | |
704 | case 'm': return &symbol_mod; | |
705 | case 'n': return &symbol_no; | |
706 | } | |
707 | } | |
708 | for (ptr = name; *ptr; ptr++) | |
709 | hash += *ptr; | |
710 | hash &= 0xff; | |
711 | ||
712 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
713 | if (!strcmp(symbol->name, name) && | |
714 | !(symbol->flags & SYMBOL_CONST)) | |
715 | break; | |
716 | } | |
717 | ||
718 | return symbol; | |
719 | } | |
720 | ||
721 | struct symbol **sym_re_search(const char *pattern) | |
722 | { | |
723 | struct symbol *sym, **sym_arr = NULL; | |
724 | int i, cnt, size; | |
725 | regex_t re; | |
726 | ||
727 | cnt = size = 0; | |
728 | /* Skip if empty */ | |
729 | if (strlen(pattern) == 0) | |
730 | return NULL; | |
731 | if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE)) | |
732 | return NULL; | |
733 | ||
734 | for_all_symbols(i, sym) { | |
735 | if (sym->flags & SYMBOL_CONST || !sym->name) | |
736 | continue; | |
737 | if (regexec(&re, sym->name, 0, NULL, 0)) | |
738 | continue; | |
739 | if (cnt + 1 >= size) { | |
740 | void *tmp = sym_arr; | |
741 | size += 16; | |
742 | sym_arr = realloc(sym_arr, size * sizeof(struct symbol *)); | |
743 | if (!sym_arr) { | |
744 | free(tmp); | |
745 | return NULL; | |
746 | } | |
747 | } | |
748 | sym_arr[cnt++] = sym; | |
749 | } | |
750 | if (sym_arr) | |
751 | sym_arr[cnt] = NULL; | |
752 | regfree(&re); | |
753 | ||
754 | return sym_arr; | |
755 | } | |
756 | ||
757 | ||
758 | struct symbol *sym_check_deps(struct symbol *sym); | |
759 | ||
760 | static struct symbol *sym_check_expr_deps(struct expr *e) | |
761 | { | |
762 | struct symbol *sym; | |
763 | ||
764 | if (!e) | |
765 | return NULL; | |
766 | switch (e->type) { | |
767 | case E_OR: | |
768 | case E_AND: | |
769 | sym = sym_check_expr_deps(e->left.expr); | |
770 | if (sym) | |
771 | return sym; | |
772 | return sym_check_expr_deps(e->right.expr); | |
773 | case E_NOT: | |
774 | return sym_check_expr_deps(e->left.expr); | |
775 | case E_EQUAL: | |
776 | case E_UNEQUAL: | |
777 | sym = sym_check_deps(e->left.sym); | |
778 | if (sym) | |
779 | return sym; | |
780 | return sym_check_deps(e->right.sym); | |
781 | case E_SYMBOL: | |
782 | return sym_check_deps(e->left.sym); | |
783 | default: | |
784 | break; | |
785 | } | |
786 | printf("Oops! How to check %d?\n", e->type); | |
787 | return NULL; | |
788 | } | |
789 | ||
790 | struct symbol *sym_check_deps(struct symbol *sym) | |
791 | { | |
792 | struct symbol *sym2; | |
793 | struct property *prop; | |
794 | ||
1da177e4 LT |
795 | if (sym->flags & SYMBOL_CHECK) { |
796 | printf("Warning! Found recursive dependency: %s", sym->name); | |
797 | return sym; | |
798 | } | |
3f04e7dd DG |
799 | if (sym->flags & SYMBOL_CHECKED) |
800 | return NULL; | |
1da177e4 LT |
801 | |
802 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
803 | sym2 = sym_check_expr_deps(sym->rev_dep.expr); | |
804 | if (sym2) | |
805 | goto out; | |
806 | ||
807 | for (prop = sym->prop; prop; prop = prop->next) { | |
808 | if (prop->type == P_CHOICE || prop->type == P_SELECT) | |
809 | continue; | |
810 | sym2 = sym_check_expr_deps(prop->visible.expr); | |
811 | if (sym2) | |
812 | goto out; | |
813 | if (prop->type != P_DEFAULT || sym_is_choice(sym)) | |
814 | continue; | |
815 | sym2 = sym_check_expr_deps(prop->expr); | |
816 | if (sym2) | |
817 | goto out; | |
818 | } | |
819 | out: | |
3f04e7dd | 820 | if (sym2) { |
1da177e4 | 821 | printf(" %s", sym->name); |
3f04e7dd DG |
822 | if (sym2 == sym) { |
823 | printf("\n"); | |
824 | sym2 = NULL; | |
825 | } | |
826 | } | |
1da177e4 LT |
827 | sym->flags &= ~SYMBOL_CHECK; |
828 | return sym2; | |
829 | } | |
830 | ||
831 | struct property *prop_alloc(enum prop_type type, struct symbol *sym) | |
832 | { | |
833 | struct property *prop; | |
834 | struct property **propp; | |
835 | ||
836 | prop = malloc(sizeof(*prop)); | |
837 | memset(prop, 0, sizeof(*prop)); | |
838 | prop->type = type; | |
839 | prop->sym = sym; | |
840 | prop->file = current_file; | |
841 | prop->lineno = zconf_lineno(); | |
842 | ||
843 | /* append property to the prop list of symbol */ | |
844 | if (sym) { | |
845 | for (propp = &sym->prop; *propp; propp = &(*propp)->next) | |
846 | ; | |
847 | *propp = prop; | |
848 | } | |
849 | ||
850 | return prop; | |
851 | } | |
852 | ||
853 | struct symbol *prop_get_symbol(struct property *prop) | |
854 | { | |
855 | if (prop->expr && (prop->expr->type == E_SYMBOL || | |
856 | prop->expr->type == E_CHOICE)) | |
857 | return prop->expr->left.sym; | |
858 | return NULL; | |
859 | } | |
860 | ||
861 | const char *prop_get_type_name(enum prop_type type) | |
862 | { | |
863 | switch (type) { | |
864 | case P_PROMPT: | |
865 | return "prompt"; | |
866 | case P_COMMENT: | |
867 | return "comment"; | |
868 | case P_MENU: | |
869 | return "menu"; | |
870 | case P_DEFAULT: | |
871 | return "default"; | |
872 | case P_CHOICE: | |
873 | return "choice"; | |
874 | case P_SELECT: | |
875 | return "select"; | |
876 | case P_RANGE: | |
877 | return "range"; | |
878 | case P_UNKNOWN: | |
879 | break; | |
880 | } | |
881 | return "unknown"; | |
882 | } |