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