Contents of /trunk/mkinitrd-magellan/busybox/scripts/kconfig/symbol.c
Parent Directory | Revision Log
Revision 532 -
(show annotations)
(download)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 17763 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 17763 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
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("KERNELVERSION", 0); |
65 | sym->type = S_STRING; |
66 | sym->flags |= SYMBOL_AUTO; |
67 | p = getenv("KERNELVERSION"); |
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 | |
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 | |
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); |
353 | sym_validate_range(sym); |
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 | } |
433 | /* |
434 | * setting a choice value also resets the new flag of the choice |
435 | * symbol and all other choice values. |
436 | */ |
437 | if (sym_is_choice_value(sym) && val == yes) { |
438 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
439 | struct property *prop; |
440 | struct expr *e; |
441 | |
442 | cs->user.val = sym; |
443 | cs->flags &= ~SYMBOL_NEW; |
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 | } |
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); |
542 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
543 | val <= sym_get_range_val(prop->expr->right.sym, 10); |
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); |
551 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
552 | val <= sym_get_range_val(prop->expr->right.sym, 16); |
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 | |
795 | if (sym->flags & SYMBOL_CHECK) { |
796 | printf("Warning! Found recursive dependency: %s", sym->name); |
797 | return sym; |
798 | } |
799 | if (sym->flags & SYMBOL_CHECKED) |
800 | return NULL; |
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: |
820 | if (sym2) { |
821 | printf(" %s", sym->name); |
822 | if (sym2 == sym) { |
823 | printf("\n"); |
824 | sym2 = NULL; |
825 | } |
826 | } |
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 | } |