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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 }, | |
c0e150ac | 18 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
1da177e4 LT |
19 | }, symbol_mod = { |
20 | .name = "m", | |
21 | .curr = { "m", mod }, | |
c0e150ac | 22 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
1da177e4 LT |
23 | }, symbol_no = { |
24 | .name = "n", | |
25 | .curr = { "n", no }, | |
c0e150ac | 26 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
1da177e4 LT |
27 | }, symbol_empty = { |
28 | .name = "", | |
29 | .curr = { "", no }, | |
30 | .flags = SYMBOL_VALID, | |
31 | }; | |
32 | ||
face4374 | 33 | struct symbol *sym_defconfig_list; |
1da177e4 LT |
34 | struct symbol *modules_sym; |
35 | tristate modules_val; | |
36 | ||
93449082 RZ |
37 | struct expr *sym_env_list; |
38 | ||
4356f489 | 39 | static void sym_add_default(struct symbol *sym, const char *def) |
1da177e4 LT |
40 | { |
41 | struct property *prop = prop_alloc(P_DEFAULT, sym); | |
42 | ||
5a1aa8a1 | 43 | prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST)); |
1da177e4 LT |
44 | } |
45 | ||
46 | void sym_init(void) | |
47 | { | |
48 | struct symbol *sym; | |
49 | struct utsname uts; | |
1da177e4 LT |
50 | static bool inited = false; |
51 | ||
52 | if (inited) | |
53 | return; | |
54 | inited = true; | |
55 | ||
56 | uname(&uts); | |
57 | ||
1da177e4 LT |
58 | sym = sym_lookup("UNAME_RELEASE", 0); |
59 | sym->type = S_STRING; | |
60 | sym->flags |= SYMBOL_AUTO; | |
61 | sym_add_default(sym, uts.release); | |
62 | } | |
63 | ||
64 | enum symbol_type sym_get_type(struct symbol *sym) | |
65 | { | |
66 | enum symbol_type type = sym->type; | |
67 | ||
68 | if (type == S_TRISTATE) { | |
69 | if (sym_is_choice_value(sym) && sym->visible == yes) | |
70 | type = S_BOOLEAN; | |
71 | else if (modules_val == no) | |
72 | type = S_BOOLEAN; | |
73 | } | |
74 | return type; | |
75 | } | |
76 | ||
77 | const char *sym_type_name(enum symbol_type type) | |
78 | { | |
79 | switch (type) { | |
80 | case S_BOOLEAN: | |
81 | return "boolean"; | |
82 | case S_TRISTATE: | |
83 | return "tristate"; | |
84 | case S_INT: | |
85 | return "integer"; | |
86 | case S_HEX: | |
87 | return "hex"; | |
88 | case S_STRING: | |
89 | return "string"; | |
90 | case S_UNKNOWN: | |
91 | return "unknown"; | |
92 | case S_OTHER: | |
93 | break; | |
94 | } | |
95 | return "???"; | |
96 | } | |
97 | ||
98 | struct property *sym_get_choice_prop(struct symbol *sym) | |
99 | { | |
100 | struct property *prop; | |
101 | ||
102 | for_all_choices(sym, prop) | |
103 | return prop; | |
104 | return NULL; | |
105 | } | |
106 | ||
93449082 RZ |
107 | struct property *sym_get_env_prop(struct symbol *sym) |
108 | { | |
109 | struct property *prop; | |
110 | ||
111 | for_all_properties(sym, prop, P_ENV) | |
112 | return prop; | |
113 | return NULL; | |
114 | } | |
115 | ||
1da177e4 LT |
116 | struct property *sym_get_default_prop(struct symbol *sym) |
117 | { | |
118 | struct property *prop; | |
119 | ||
120 | for_all_defaults(sym, prop) { | |
121 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
122 | if (prop->visible.tri != no) | |
123 | return prop; | |
124 | } | |
125 | return NULL; | |
126 | } | |
127 | ||
4356f489 | 128 | static struct property *sym_get_range_prop(struct symbol *sym) |
1da177e4 LT |
129 | { |
130 | struct property *prop; | |
131 | ||
132 | for_all_properties(sym, prop, P_RANGE) { | |
133 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
134 | if (prop->visible.tri != no) | |
135 | return prop; | |
136 | } | |
137 | return NULL; | |
138 | } | |
139 | ||
4cf3cbe2 RZ |
140 | static int sym_get_range_val(struct symbol *sym, int base) |
141 | { | |
142 | sym_calc_value(sym); | |
143 | switch (sym->type) { | |
144 | case S_INT: | |
145 | base = 10; | |
146 | break; | |
147 | case S_HEX: | |
148 | base = 16; | |
149 | break; | |
150 | default: | |
151 | break; | |
152 | } | |
153 | return strtol(sym->curr.val, NULL, base); | |
154 | } | |
155 | ||
156 | static void sym_validate_range(struct symbol *sym) | |
157 | { | |
158 | struct property *prop; | |
159 | int base, val, val2; | |
160 | char str[64]; | |
161 | ||
162 | switch (sym->type) { | |
163 | case S_INT: | |
164 | base = 10; | |
165 | break; | |
166 | case S_HEX: | |
167 | base = 16; | |
168 | break; | |
169 | default: | |
170 | return; | |
171 | } | |
172 | prop = sym_get_range_prop(sym); | |
173 | if (!prop) | |
174 | return; | |
175 | val = strtol(sym->curr.val, NULL, base); | |
176 | val2 = sym_get_range_val(prop->expr->left.sym, base); | |
177 | if (val >= val2) { | |
178 | val2 = sym_get_range_val(prop->expr->right.sym, base); | |
179 | if (val <= val2) | |
180 | return; | |
181 | } | |
182 | if (sym->type == S_INT) | |
183 | sprintf(str, "%d", val2); | |
184 | else | |
185 | sprintf(str, "0x%x", val2); | |
186 | sym->curr.val = strdup(str); | |
187 | } | |
188 | ||
1da177e4 LT |
189 | static void sym_calc_visibility(struct symbol *sym) |
190 | { | |
191 | struct property *prop; | |
192 | tristate tri; | |
193 | ||
194 | /* any prompt visible? */ | |
195 | tri = no; | |
196 | for_all_prompts(sym, prop) { | |
197 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
d6ee3576 | 198 | tri = EXPR_OR(tri, prop->visible.tri); |
1da177e4 LT |
199 | } |
200 | if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) | |
201 | tri = yes; | |
202 | if (sym->visible != tri) { | |
203 | sym->visible = tri; | |
204 | sym_set_changed(sym); | |
205 | } | |
206 | if (sym_is_choice_value(sym)) | |
207 | return; | |
246cf9c2 CM |
208 | /* defaulting to "yes" if no explicit "depends on" are given */ |
209 | tri = yes; | |
210 | if (sym->dir_dep.expr) | |
211 | tri = expr_calc_value(sym->dir_dep.expr); | |
212 | if (tri == mod) | |
213 | tri = yes; | |
214 | if (sym->dir_dep.tri != tri) { | |
215 | sym->dir_dep.tri = tri; | |
216 | sym_set_changed(sym); | |
217 | } | |
1da177e4 LT |
218 | tri = no; |
219 | if (sym->rev_dep.expr) | |
220 | tri = expr_calc_value(sym->rev_dep.expr); | |
221 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) | |
222 | tri = yes; | |
223 | if (sym->rev_dep.tri != tri) { | |
224 | sym->rev_dep.tri = tri; | |
225 | sym_set_changed(sym); | |
226 | } | |
227 | } | |
228 | ||
229 | static struct symbol *sym_calc_choice(struct symbol *sym) | |
230 | { | |
231 | struct symbol *def_sym; | |
232 | struct property *prop; | |
233 | struct expr *e; | |
234 | ||
235 | /* is the user choice visible? */ | |
0c1822e6 | 236 | def_sym = sym->def[S_DEF_USER].val; |
1da177e4 LT |
237 | if (def_sym) { |
238 | sym_calc_visibility(def_sym); | |
239 | if (def_sym->visible != no) | |
240 | return def_sym; | |
241 | } | |
242 | ||
243 | /* any of the defaults visible? */ | |
244 | for_all_defaults(sym, prop) { | |
245 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
246 | if (prop->visible.tri == no) | |
247 | continue; | |
248 | def_sym = prop_get_symbol(prop); | |
249 | sym_calc_visibility(def_sym); | |
250 | if (def_sym->visible != no) | |
251 | return def_sym; | |
252 | } | |
253 | ||
254 | /* just get the first visible value */ | |
255 | prop = sym_get_choice_prop(sym); | |
7a962923 | 256 | expr_list_for_each_sym(prop->expr, e, def_sym) { |
1da177e4 LT |
257 | sym_calc_visibility(def_sym); |
258 | if (def_sym->visible != no) | |
259 | return def_sym; | |
260 | } | |
261 | ||
262 | /* no choice? reset tristate value */ | |
263 | sym->curr.tri = no; | |
264 | return NULL; | |
265 | } | |
266 | ||
267 | void sym_calc_value(struct symbol *sym) | |
268 | { | |
269 | struct symbol_value newval, oldval; | |
270 | struct property *prop; | |
271 | struct expr *e; | |
272 | ||
273 | if (!sym) | |
274 | return; | |
275 | ||
276 | if (sym->flags & SYMBOL_VALID) | |
277 | return; | |
278 | sym->flags |= SYMBOL_VALID; | |
279 | ||
280 | oldval = sym->curr; | |
281 | ||
282 | switch (sym->type) { | |
283 | case S_INT: | |
284 | case S_HEX: | |
285 | case S_STRING: | |
286 | newval = symbol_empty.curr; | |
287 | break; | |
288 | case S_BOOLEAN: | |
289 | case S_TRISTATE: | |
290 | newval = symbol_no.curr; | |
291 | break; | |
292 | default: | |
293 | sym->curr.val = sym->name; | |
294 | sym->curr.tri = no; | |
295 | return; | |
296 | } | |
297 | if (!sym_is_choice_value(sym)) | |
298 | sym->flags &= ~SYMBOL_WRITE; | |
299 | ||
300 | sym_calc_visibility(sym); | |
301 | ||
302 | /* set default if recursively called */ | |
303 | sym->curr = newval; | |
304 | ||
305 | switch (sym_get_type(sym)) { | |
306 | case S_BOOLEAN: | |
307 | case S_TRISTATE: | |
308 | if (sym_is_choice_value(sym) && sym->visible == yes) { | |
309 | prop = sym_get_choice_prop(sym); | |
310 | newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; | |
587c9061 RZ |
311 | } else { |
312 | if (sym->visible != no) { | |
313 | /* if the symbol is visible use the user value | |
314 | * if available, otherwise try the default value | |
315 | */ | |
316 | sym->flags |= SYMBOL_WRITE; | |
317 | if (sym_has_value(sym)) { | |
318 | newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri, | |
319 | sym->visible); | |
320 | goto calc_newval; | |
321 | } | |
1da177e4 | 322 | } |
587c9061 | 323 | if (sym->rev_dep.tri != no) |
1da177e4 | 324 | sym->flags |= SYMBOL_WRITE; |
587c9061 RZ |
325 | if (!sym_is_choice(sym)) { |
326 | prop = sym_get_default_prop(sym); | |
327 | if (prop) { | |
328 | sym->flags |= SYMBOL_WRITE; | |
329 | newval.tri = EXPR_AND(expr_calc_value(prop->expr), | |
330 | prop->visible.tri); | |
331 | } | |
1da177e4 | 332 | } |
587c9061 | 333 | calc_newval: |
246cf9c2 CM |
334 | if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) { |
335 | fprintf(stderr, "warning: ("); | |
336 | expr_fprint(sym->rev_dep.expr, stderr); | |
337 | fprintf(stderr, ") selects %s which has unmet direct dependencies (", | |
338 | sym->name); | |
339 | expr_fprint(sym->dir_dep.expr, stderr); | |
340 | fprintf(stderr, ")\n"); | |
341 | } | |
587c9061 | 342 | newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); |
1da177e4 LT |
343 | } |
344 | if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) | |
345 | newval.tri = yes; | |
346 | break; | |
347 | case S_STRING: | |
348 | case S_HEX: | |
349 | case S_INT: | |
350 | if (sym->visible != no) { | |
351 | sym->flags |= SYMBOL_WRITE; | |
352 | if (sym_has_value(sym)) { | |
0c1822e6 | 353 | newval.val = sym->def[S_DEF_USER].val; |
1da177e4 LT |
354 | break; |
355 | } | |
356 | } | |
357 | prop = sym_get_default_prop(sym); | |
358 | if (prop) { | |
359 | struct symbol *ds = prop_get_symbol(prop); | |
360 | if (ds) { | |
361 | sym->flags |= SYMBOL_WRITE; | |
362 | sym_calc_value(ds); | |
363 | newval.val = ds->curr.val; | |
364 | } | |
365 | } | |
366 | break; | |
367 | default: | |
368 | ; | |
369 | } | |
370 | ||
371 | sym->curr = newval; | |
372 | if (sym_is_choice(sym) && newval.tri == yes) | |
373 | sym->curr.val = sym_calc_choice(sym); | |
4cf3cbe2 | 374 | sym_validate_range(sym); |
1da177e4 | 375 | |
face4374 | 376 | if (memcmp(&oldval, &sym->curr, sizeof(oldval))) { |
1da177e4 | 377 | sym_set_changed(sym); |
face4374 RZ |
378 | if (modules_sym == sym) { |
379 | sym_set_all_changed(); | |
380 | modules_val = modules_sym->curr.tri; | |
381 | } | |
382 | } | |
1da177e4 LT |
383 | |
384 | if (sym_is_choice(sym)) { | |
7a962923 | 385 | struct symbol *choice_sym; |
1da177e4 | 386 | int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE); |
7a962923 | 387 | |
1da177e4 | 388 | prop = sym_get_choice_prop(sym); |
7a962923 RZ |
389 | expr_list_for_each_sym(prop->expr, e, choice_sym) { |
390 | choice_sym->flags |= flags; | |
1da177e4 | 391 | if (flags & SYMBOL_CHANGED) |
7a962923 | 392 | sym_set_changed(choice_sym); |
1da177e4 LT |
393 | } |
394 | } | |
5a1aa8a1 RZ |
395 | |
396 | if (sym->flags & SYMBOL_AUTO) | |
397 | sym->flags &= ~SYMBOL_WRITE; | |
1da177e4 LT |
398 | } |
399 | ||
400 | void sym_clear_all_valid(void) | |
401 | { | |
402 | struct symbol *sym; | |
403 | int i; | |
404 | ||
405 | for_all_symbols(i, sym) | |
406 | sym->flags &= ~SYMBOL_VALID; | |
bfc10001 | 407 | sym_add_change_count(1); |
1da177e4 LT |
408 | if (modules_sym) |
409 | sym_calc_value(modules_sym); | |
410 | } | |
411 | ||
412 | void sym_set_changed(struct symbol *sym) | |
413 | { | |
414 | struct property *prop; | |
415 | ||
416 | sym->flags |= SYMBOL_CHANGED; | |
417 | for (prop = sym->prop; prop; prop = prop->next) { | |
418 | if (prop->menu) | |
419 | prop->menu->flags |= MENU_CHANGED; | |
420 | } | |
421 | } | |
422 | ||
423 | void sym_set_all_changed(void) | |
424 | { | |
425 | struct symbol *sym; | |
426 | int i; | |
427 | ||
428 | for_all_symbols(i, sym) | |
429 | sym_set_changed(sym); | |
430 | } | |
431 | ||
432 | bool sym_tristate_within_range(struct symbol *sym, tristate val) | |
433 | { | |
434 | int type = sym_get_type(sym); | |
435 | ||
436 | if (sym->visible == no) | |
437 | return false; | |
438 | ||
439 | if (type != S_BOOLEAN && type != S_TRISTATE) | |
440 | return false; | |
441 | ||
442 | if (type == S_BOOLEAN && val == mod) | |
443 | return false; | |
444 | if (sym->visible <= sym->rev_dep.tri) | |
445 | return false; | |
446 | if (sym_is_choice_value(sym) && sym->visible == yes) | |
447 | return val == yes; | |
448 | return val >= sym->rev_dep.tri && val <= sym->visible; | |
449 | } | |
450 | ||
451 | bool sym_set_tristate_value(struct symbol *sym, tristate val) | |
452 | { | |
453 | tristate oldval = sym_get_tristate_value(sym); | |
454 | ||
455 | if (oldval != val && !sym_tristate_within_range(sym, val)) | |
456 | return false; | |
457 | ||
669bfad9 RZ |
458 | if (!(sym->flags & SYMBOL_DEF_USER)) { |
459 | sym->flags |= SYMBOL_DEF_USER; | |
1da177e4 LT |
460 | sym_set_changed(sym); |
461 | } | |
3f23ca2b RZ |
462 | /* |
463 | * setting a choice value also resets the new flag of the choice | |
464 | * symbol and all other choice values. | |
465 | */ | |
1da177e4 LT |
466 | if (sym_is_choice_value(sym) && val == yes) { |
467 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
3f23ca2b RZ |
468 | struct property *prop; |
469 | struct expr *e; | |
1da177e4 | 470 | |
0c1822e6 | 471 | cs->def[S_DEF_USER].val = sym; |
669bfad9 | 472 | cs->flags |= SYMBOL_DEF_USER; |
3f23ca2b RZ |
473 | prop = sym_get_choice_prop(cs); |
474 | for (e = prop->expr; e; e = e->left.expr) { | |
475 | if (e->right.sym->visible != no) | |
669bfad9 | 476 | e->right.sym->flags |= SYMBOL_DEF_USER; |
3f23ca2b | 477 | } |
1da177e4 LT |
478 | } |
479 | ||
0c1822e6 | 480 | sym->def[S_DEF_USER].tri = val; |
face4374 | 481 | if (oldval != val) |
1da177e4 | 482 | sym_clear_all_valid(); |
1da177e4 LT |
483 | |
484 | return true; | |
485 | } | |
486 | ||
487 | tristate sym_toggle_tristate_value(struct symbol *sym) | |
488 | { | |
489 | tristate oldval, newval; | |
490 | ||
491 | oldval = newval = sym_get_tristate_value(sym); | |
492 | do { | |
493 | switch (newval) { | |
494 | case no: | |
495 | newval = mod; | |
496 | break; | |
497 | case mod: | |
498 | newval = yes; | |
499 | break; | |
500 | case yes: | |
501 | newval = no; | |
502 | break; | |
503 | } | |
504 | if (sym_set_tristate_value(sym, newval)) | |
505 | break; | |
506 | } while (oldval != newval); | |
507 | return newval; | |
508 | } | |
509 | ||
510 | bool sym_string_valid(struct symbol *sym, const char *str) | |
511 | { | |
512 | signed char ch; | |
513 | ||
514 | switch (sym->type) { | |
515 | case S_STRING: | |
516 | return true; | |
517 | case S_INT: | |
518 | ch = *str++; | |
519 | if (ch == '-') | |
520 | ch = *str++; | |
521 | if (!isdigit(ch)) | |
522 | return false; | |
523 | if (ch == '0' && *str != 0) | |
524 | return false; | |
525 | while ((ch = *str++)) { | |
526 | if (!isdigit(ch)) | |
527 | return false; | |
528 | } | |
529 | return true; | |
530 | case S_HEX: | |
531 | if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) | |
532 | str += 2; | |
533 | ch = *str++; | |
534 | do { | |
535 | if (!isxdigit(ch)) | |
536 | return false; | |
537 | } while ((ch = *str++)); | |
538 | return true; | |
539 | case S_BOOLEAN: | |
540 | case S_TRISTATE: | |
541 | switch (str[0]) { | |
542 | case 'y': case 'Y': | |
543 | case 'm': case 'M': | |
544 | case 'n': case 'N': | |
545 | return true; | |
546 | } | |
547 | return false; | |
548 | default: | |
549 | return false; | |
550 | } | |
551 | } | |
552 | ||
553 | bool sym_string_within_range(struct symbol *sym, const char *str) | |
554 | { | |
555 | struct property *prop; | |
556 | int val; | |
557 | ||
558 | switch (sym->type) { | |
559 | case S_STRING: | |
560 | return sym_string_valid(sym, str); | |
561 | case S_INT: | |
562 | if (!sym_string_valid(sym, str)) | |
563 | return false; | |
564 | prop = sym_get_range_prop(sym); | |
565 | if (!prop) | |
566 | return true; | |
567 | val = strtol(str, NULL, 10); | |
4cf3cbe2 RZ |
568 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
569 | val <= sym_get_range_val(prop->expr->right.sym, 10); | |
1da177e4 LT |
570 | case S_HEX: |
571 | if (!sym_string_valid(sym, str)) | |
572 | return false; | |
573 | prop = sym_get_range_prop(sym); | |
574 | if (!prop) | |
575 | return true; | |
576 | val = strtol(str, NULL, 16); | |
4cf3cbe2 RZ |
577 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
578 | val <= sym_get_range_val(prop->expr->right.sym, 16); | |
1da177e4 LT |
579 | case S_BOOLEAN: |
580 | case S_TRISTATE: | |
581 | switch (str[0]) { | |
582 | case 'y': case 'Y': | |
583 | return sym_tristate_within_range(sym, yes); | |
584 | case 'm': case 'M': | |
585 | return sym_tristate_within_range(sym, mod); | |
586 | case 'n': case 'N': | |
587 | return sym_tristate_within_range(sym, no); | |
588 | } | |
589 | return false; | |
590 | default: | |
591 | return false; | |
592 | } | |
593 | } | |
594 | ||
595 | bool sym_set_string_value(struct symbol *sym, const char *newval) | |
596 | { | |
597 | const char *oldval; | |
598 | char *val; | |
599 | int size; | |
600 | ||
601 | switch (sym->type) { | |
602 | case S_BOOLEAN: | |
603 | case S_TRISTATE: | |
604 | switch (newval[0]) { | |
605 | case 'y': case 'Y': | |
606 | return sym_set_tristate_value(sym, yes); | |
607 | case 'm': case 'M': | |
608 | return sym_set_tristate_value(sym, mod); | |
609 | case 'n': case 'N': | |
610 | return sym_set_tristate_value(sym, no); | |
611 | } | |
612 | return false; | |
613 | default: | |
614 | ; | |
615 | } | |
616 | ||
617 | if (!sym_string_within_range(sym, newval)) | |
618 | return false; | |
619 | ||
669bfad9 RZ |
620 | if (!(sym->flags & SYMBOL_DEF_USER)) { |
621 | sym->flags |= SYMBOL_DEF_USER; | |
1da177e4 LT |
622 | sym_set_changed(sym); |
623 | } | |
624 | ||
0c1822e6 | 625 | oldval = sym->def[S_DEF_USER].val; |
1da177e4 LT |
626 | size = strlen(newval) + 1; |
627 | if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { | |
628 | size += 2; | |
0c1822e6 | 629 | sym->def[S_DEF_USER].val = val = malloc(size); |
1da177e4 LT |
630 | *val++ = '0'; |
631 | *val++ = 'x'; | |
632 | } else if (!oldval || strcmp(oldval, newval)) | |
0c1822e6 | 633 | sym->def[S_DEF_USER].val = val = malloc(size); |
1da177e4 LT |
634 | else |
635 | return true; | |
636 | ||
637 | strcpy(val, newval); | |
638 | free((void *)oldval); | |
639 | sym_clear_all_valid(); | |
640 | ||
641 | return true; | |
642 | } | |
643 | ||
644 | const char *sym_get_string_value(struct symbol *sym) | |
645 | { | |
646 | tristate val; | |
647 | ||
648 | switch (sym->type) { | |
649 | case S_BOOLEAN: | |
650 | case S_TRISTATE: | |
651 | val = sym_get_tristate_value(sym); | |
652 | switch (val) { | |
653 | case no: | |
654 | return "n"; | |
655 | case mod: | |
656 | return "m"; | |
657 | case yes: | |
658 | return "y"; | |
659 | } | |
660 | break; | |
661 | default: | |
662 | ; | |
663 | } | |
664 | return (const char *)sym->curr.val; | |
665 | } | |
666 | ||
667 | bool sym_is_changable(struct symbol *sym) | |
668 | { | |
669 | return sym->visible > sym->rev_dep.tri; | |
670 | } | |
671 | ||
e66f25d7 AK |
672 | static unsigned strhash(const char *s) |
673 | { | |
674 | /* fnv32 hash */ | |
675 | unsigned hash = 2166136261U; | |
676 | for (; *s; s++) | |
677 | hash = (hash ^ *s) * 0x01000193; | |
678 | return hash; | |
679 | } | |
680 | ||
5a1aa8a1 | 681 | struct symbol *sym_lookup(const char *name, int flags) |
1da177e4 LT |
682 | { |
683 | struct symbol *symbol; | |
1da177e4 | 684 | char *new_name; |
e66f25d7 | 685 | int hash; |
1da177e4 LT |
686 | |
687 | if (name) { | |
688 | if (name[0] && !name[1]) { | |
689 | switch (name[0]) { | |
690 | case 'y': return &symbol_yes; | |
691 | case 'm': return &symbol_mod; | |
692 | case 'n': return &symbol_no; | |
693 | } | |
694 | } | |
e66f25d7 | 695 | hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4 LT |
696 | |
697 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
e66f25d7 AK |
698 | if (symbol->name && |
699 | !strcmp(symbol->name, name) && | |
5a1aa8a1 RZ |
700 | (flags ? symbol->flags & flags |
701 | : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE)))) | |
702 | return symbol; | |
1da177e4 LT |
703 | } |
704 | new_name = strdup(name); | |
705 | } else { | |
706 | new_name = NULL; | |
e66f25d7 | 707 | hash = 0; |
1da177e4 LT |
708 | } |
709 | ||
710 | symbol = malloc(sizeof(*symbol)); | |
711 | memset(symbol, 0, sizeof(*symbol)); | |
712 | symbol->name = new_name; | |
713 | symbol->type = S_UNKNOWN; | |
5a1aa8a1 | 714 | symbol->flags |= flags; |
1da177e4 LT |
715 | |
716 | symbol->next = symbol_hash[hash]; | |
717 | symbol_hash[hash] = symbol; | |
718 | ||
719 | return symbol; | |
720 | } | |
721 | ||
722 | struct symbol *sym_find(const char *name) | |
723 | { | |
724 | struct symbol *symbol = NULL; | |
1da177e4 LT |
725 | int hash = 0; |
726 | ||
727 | if (!name) | |
728 | return NULL; | |
729 | ||
730 | if (name[0] && !name[1]) { | |
731 | switch (name[0]) { | |
732 | case 'y': return &symbol_yes; | |
733 | case 'm': return &symbol_mod; | |
734 | case 'n': return &symbol_no; | |
735 | } | |
736 | } | |
e66f25d7 | 737 | hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4 LT |
738 | |
739 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
e66f25d7 AK |
740 | if (symbol->name && |
741 | !strcmp(symbol->name, name) && | |
1da177e4 LT |
742 | !(symbol->flags & SYMBOL_CONST)) |
743 | break; | |
744 | } | |
745 | ||
746 | return symbol; | |
747 | } | |
748 | ||
749 | struct symbol **sym_re_search(const char *pattern) | |
750 | { | |
751 | struct symbol *sym, **sym_arr = NULL; | |
752 | int i, cnt, size; | |
753 | regex_t re; | |
754 | ||
755 | cnt = size = 0; | |
756 | /* Skip if empty */ | |
757 | if (strlen(pattern) == 0) | |
758 | return NULL; | |
759 | if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE)) | |
760 | return NULL; | |
761 | ||
762 | for_all_symbols(i, sym) { | |
763 | if (sym->flags & SYMBOL_CONST || !sym->name) | |
764 | continue; | |
765 | if (regexec(&re, sym->name, 0, NULL, 0)) | |
766 | continue; | |
767 | if (cnt + 1 >= size) { | |
768 | void *tmp = sym_arr; | |
769 | size += 16; | |
770 | sym_arr = realloc(sym_arr, size * sizeof(struct symbol *)); | |
771 | if (!sym_arr) { | |
772 | free(tmp); | |
773 | return NULL; | |
774 | } | |
775 | } | |
da6df879 | 776 | sym_calc_value(sym); |
1da177e4 LT |
777 | sym_arr[cnt++] = sym; |
778 | } | |
779 | if (sym_arr) | |
780 | sym_arr[cnt] = NULL; | |
781 | regfree(&re); | |
782 | ||
783 | return sym_arr; | |
784 | } | |
785 | ||
786 | ||
1da177e4 LT |
787 | static struct symbol *sym_check_expr_deps(struct expr *e) |
788 | { | |
789 | struct symbol *sym; | |
790 | ||
791 | if (!e) | |
792 | return NULL; | |
793 | switch (e->type) { | |
794 | case E_OR: | |
795 | case E_AND: | |
796 | sym = sym_check_expr_deps(e->left.expr); | |
797 | if (sym) | |
798 | return sym; | |
799 | return sym_check_expr_deps(e->right.expr); | |
800 | case E_NOT: | |
801 | return sym_check_expr_deps(e->left.expr); | |
802 | case E_EQUAL: | |
803 | case E_UNEQUAL: | |
804 | sym = sym_check_deps(e->left.sym); | |
805 | if (sym) | |
806 | return sym; | |
807 | return sym_check_deps(e->right.sym); | |
808 | case E_SYMBOL: | |
809 | return sym_check_deps(e->left.sym); | |
810 | default: | |
811 | break; | |
812 | } | |
813 | printf("Oops! How to check %d?\n", e->type); | |
814 | return NULL; | |
815 | } | |
816 | ||
5447d34b | 817 | /* return NULL when dependencies are OK */ |
48981178 | 818 | static struct symbol *sym_check_sym_deps(struct symbol *sym) |
1da177e4 LT |
819 | { |
820 | struct symbol *sym2; | |
821 | struct property *prop; | |
822 | ||
1da177e4 LT |
823 | sym2 = sym_check_expr_deps(sym->rev_dep.expr); |
824 | if (sym2) | |
48981178 | 825 | return sym2; |
1da177e4 LT |
826 | |
827 | for (prop = sym->prop; prop; prop = prop->next) { | |
828 | if (prop->type == P_CHOICE || prop->type == P_SELECT) | |
829 | continue; | |
830 | sym2 = sym_check_expr_deps(prop->visible.expr); | |
831 | if (sym2) | |
48981178 | 832 | break; |
1da177e4 LT |
833 | if (prop->type != P_DEFAULT || sym_is_choice(sym)) |
834 | continue; | |
835 | sym2 = sym_check_expr_deps(prop->expr); | |
836 | if (sym2) | |
48981178 | 837 | break; |
1da177e4 | 838 | } |
48981178 RZ |
839 | |
840 | return sym2; | |
841 | } | |
842 | ||
843 | static struct symbol *sym_check_choice_deps(struct symbol *choice) | |
844 | { | |
845 | struct symbol *sym, *sym2; | |
846 | struct property *prop; | |
847 | struct expr *e; | |
848 | ||
849 | prop = sym_get_choice_prop(choice); | |
850 | expr_list_for_each_sym(prop->expr, e, sym) | |
851 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
852 | ||
853 | choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
854 | sym2 = sym_check_sym_deps(choice); | |
855 | choice->flags &= ~SYMBOL_CHECK; | |
5447d34b | 856 | if (sym2) |
48981178 RZ |
857 | goto out; |
858 | ||
859 | expr_list_for_each_sym(prop->expr, e, sym) { | |
860 | sym2 = sym_check_sym_deps(sym); | |
861 | if (sym2) { | |
862 | fprintf(stderr, " -> %s", sym->name); | |
863 | break; | |
864 | } | |
865 | } | |
866 | out: | |
867 | expr_list_for_each_sym(prop->expr, e, sym) | |
868 | sym->flags &= ~SYMBOL_CHECK; | |
869 | ||
870 | if (sym2 && sym_is_choice_value(sym2) && | |
871 | prop_get_symbol(sym_get_choice_prop(sym2)) == choice) | |
872 | sym2 = choice; | |
873 | ||
874 | return sym2; | |
875 | } | |
876 | ||
877 | struct symbol *sym_check_deps(struct symbol *sym) | |
878 | { | |
879 | struct symbol *sym2; | |
880 | struct property *prop; | |
881 | ||
882 | if (sym->flags & SYMBOL_CHECK) { | |
883 | fprintf(stderr, "%s:%d:error: found recursive dependency: %s", | |
884 | sym->prop->file->name, sym->prop->lineno, | |
885 | sym->name ? sym->name : "<choice>"); | |
886 | return sym; | |
887 | } | |
888 | if (sym->flags & SYMBOL_CHECKED) | |
889 | return NULL; | |
890 | ||
891 | if (sym_is_choice_value(sym)) { | |
892 | /* for choice groups start the check with main choice symbol */ | |
893 | prop = sym_get_choice_prop(sym); | |
894 | sym2 = sym_check_deps(prop_get_symbol(prop)); | |
895 | } else if (sym_is_choice(sym)) { | |
896 | sym2 = sym_check_choice_deps(sym); | |
897 | } else { | |
898 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
899 | sym2 = sym_check_sym_deps(sym); | |
900 | sym->flags &= ~SYMBOL_CHECK; | |
901 | } | |
902 | ||
903 | if (sym2) { | |
904 | fprintf(stderr, " -> %s", sym->name ? sym->name : "<choice>"); | |
905 | if (sym2 == sym) { | |
906 | fprintf(stderr, "\n"); | |
907 | zconfnerrs++; | |
908 | sym2 = NULL; | |
909 | } | |
910 | } | |
911 | ||
1da177e4 LT |
912 | return sym2; |
913 | } | |
914 | ||
915 | struct property *prop_alloc(enum prop_type type, struct symbol *sym) | |
916 | { | |
917 | struct property *prop; | |
918 | struct property **propp; | |
919 | ||
920 | prop = malloc(sizeof(*prop)); | |
921 | memset(prop, 0, sizeof(*prop)); | |
922 | prop->type = type; | |
923 | prop->sym = sym; | |
924 | prop->file = current_file; | |
925 | prop->lineno = zconf_lineno(); | |
926 | ||
927 | /* append property to the prop list of symbol */ | |
928 | if (sym) { | |
929 | for (propp = &sym->prop; *propp; propp = &(*propp)->next) | |
930 | ; | |
931 | *propp = prop; | |
932 | } | |
933 | ||
934 | return prop; | |
935 | } | |
936 | ||
937 | struct symbol *prop_get_symbol(struct property *prop) | |
938 | { | |
939 | if (prop->expr && (prop->expr->type == E_SYMBOL || | |
7a962923 | 940 | prop->expr->type == E_LIST)) |
1da177e4 LT |
941 | return prop->expr->left.sym; |
942 | return NULL; | |
943 | } | |
944 | ||
945 | const char *prop_get_type_name(enum prop_type type) | |
946 | { | |
947 | switch (type) { | |
948 | case P_PROMPT: | |
949 | return "prompt"; | |
93449082 RZ |
950 | case P_ENV: |
951 | return "env"; | |
1da177e4 LT |
952 | case P_COMMENT: |
953 | return "comment"; | |
954 | case P_MENU: | |
955 | return "menu"; | |
956 | case P_DEFAULT: | |
957 | return "default"; | |
958 | case P_CHOICE: | |
959 | return "choice"; | |
960 | case P_SELECT: | |
961 | return "select"; | |
962 | case P_RANGE: | |
963 | return "range"; | |
964 | case P_UNKNOWN: | |
965 | break; | |
966 | } | |
967 | return "unknown"; | |
968 | } | |
93449082 | 969 | |
4356f489 | 970 | static void prop_add_env(const char *env) |
93449082 RZ |
971 | { |
972 | struct symbol *sym, *sym2; | |
973 | struct property *prop; | |
974 | char *p; | |
975 | ||
976 | sym = current_entry->sym; | |
977 | sym->flags |= SYMBOL_AUTO; | |
978 | for_all_properties(sym, prop, P_ENV) { | |
979 | sym2 = prop_get_symbol(prop); | |
980 | if (strcmp(sym2->name, env)) | |
981 | menu_warn(current_entry, "redefining environment symbol from %s", | |
982 | sym2->name); | |
983 | return; | |
984 | } | |
985 | ||
986 | prop = prop_alloc(P_ENV, sym); | |
5a1aa8a1 | 987 | prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST)); |
93449082 RZ |
988 | |
989 | sym_env_list = expr_alloc_one(E_LIST, sym_env_list); | |
990 | sym_env_list->right.sym = sym; | |
991 | ||
992 | p = getenv(env); | |
993 | if (p) | |
994 | sym_add_default(sym, p); | |
995 | else | |
996 | menu_warn(current_entry, "environment variable %s undefined", env); | |
997 | } |