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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 | ||
1da177e4 LT |
39 | void sym_add_default(struct symbol *sym, const char *def) |
40 | { | |
41 | struct property *prop = prop_alloc(P_DEFAULT, sym); | |
42 | ||
43 | prop->expr = expr_alloc_symbol(sym_lookup(def, 1)); | |
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 | ||
93449082 RZ |
353 | if (sym->flags & SYMBOL_AUTO) |
354 | sym->flags &= ~SYMBOL_WRITE; | |
355 | ||
1da177e4 LT |
356 | sym->curr = newval; |
357 | if (sym_is_choice(sym) && newval.tri == yes) | |
358 | sym->curr.val = sym_calc_choice(sym); | |
4cf3cbe2 | 359 | sym_validate_range(sym); |
1da177e4 | 360 | |
face4374 | 361 | if (memcmp(&oldval, &sym->curr, sizeof(oldval))) { |
1da177e4 | 362 | sym_set_changed(sym); |
face4374 RZ |
363 | if (modules_sym == sym) { |
364 | sym_set_all_changed(); | |
365 | modules_val = modules_sym->curr.tri; | |
366 | } | |
367 | } | |
1da177e4 LT |
368 | |
369 | if (sym_is_choice(sym)) { | |
7a962923 | 370 | struct symbol *choice_sym; |
1da177e4 | 371 | int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE); |
7a962923 | 372 | |
1da177e4 | 373 | prop = sym_get_choice_prop(sym); |
7a962923 RZ |
374 | expr_list_for_each_sym(prop->expr, e, choice_sym) { |
375 | choice_sym->flags |= flags; | |
1da177e4 | 376 | if (flags & SYMBOL_CHANGED) |
7a962923 | 377 | sym_set_changed(choice_sym); |
1da177e4 LT |
378 | } |
379 | } | |
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 | ||
654 | struct symbol *sym_lookup(const char *name, int isconst) | |
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) { | |
674 | if (!strcmp(symbol->name, name)) { | |
675 | if ((isconst && symbol->flags & SYMBOL_CONST) || | |
676 | (!isconst && !(symbol->flags & SYMBOL_CONST))) | |
677 | return symbol; | |
678 | } | |
679 | } | |
680 | new_name = strdup(name); | |
681 | } else { | |
682 | new_name = NULL; | |
683 | hash = 256; | |
684 | } | |
685 | ||
686 | symbol = malloc(sizeof(*symbol)); | |
687 | memset(symbol, 0, sizeof(*symbol)); | |
688 | symbol->name = new_name; | |
689 | symbol->type = S_UNKNOWN; | |
1da177e4 LT |
690 | if (isconst) |
691 | symbol->flags |= SYMBOL_CONST; | |
692 | ||
693 | symbol->next = symbol_hash[hash]; | |
694 | symbol_hash[hash] = symbol; | |
695 | ||
696 | return symbol; | |
697 | } | |
698 | ||
699 | struct symbol *sym_find(const char *name) | |
700 | { | |
701 | struct symbol *symbol = NULL; | |
702 | const char *ptr; | |
703 | int hash = 0; | |
704 | ||
705 | if (!name) | |
706 | return NULL; | |
707 | ||
708 | if (name[0] && !name[1]) { | |
709 | switch (name[0]) { | |
710 | case 'y': return &symbol_yes; | |
711 | case 'm': return &symbol_mod; | |
712 | case 'n': return &symbol_no; | |
713 | } | |
714 | } | |
715 | for (ptr = name; *ptr; ptr++) | |
716 | hash += *ptr; | |
717 | hash &= 0xff; | |
718 | ||
719 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
720 | if (!strcmp(symbol->name, name) && | |
721 | !(symbol->flags & SYMBOL_CONST)) | |
722 | break; | |
723 | } | |
724 | ||
725 | return symbol; | |
726 | } | |
727 | ||
728 | struct symbol **sym_re_search(const char *pattern) | |
729 | { | |
730 | struct symbol *sym, **sym_arr = NULL; | |
731 | int i, cnt, size; | |
732 | regex_t re; | |
733 | ||
734 | cnt = size = 0; | |
735 | /* Skip if empty */ | |
736 | if (strlen(pattern) == 0) | |
737 | return NULL; | |
738 | if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE)) | |
739 | return NULL; | |
740 | ||
741 | for_all_symbols(i, sym) { | |
742 | if (sym->flags & SYMBOL_CONST || !sym->name) | |
743 | continue; | |
744 | if (regexec(&re, sym->name, 0, NULL, 0)) | |
745 | continue; | |
746 | if (cnt + 1 >= size) { | |
747 | void *tmp = sym_arr; | |
748 | size += 16; | |
749 | sym_arr = realloc(sym_arr, size * sizeof(struct symbol *)); | |
750 | if (!sym_arr) { | |
751 | free(tmp); | |
752 | return NULL; | |
753 | } | |
754 | } | |
755 | sym_arr[cnt++] = sym; | |
756 | } | |
757 | if (sym_arr) | |
758 | sym_arr[cnt] = NULL; | |
759 | regfree(&re); | |
760 | ||
761 | return sym_arr; | |
762 | } | |
763 | ||
764 | ||
765 | struct symbol *sym_check_deps(struct symbol *sym); | |
766 | ||
767 | static struct symbol *sym_check_expr_deps(struct expr *e) | |
768 | { | |
769 | struct symbol *sym; | |
770 | ||
771 | if (!e) | |
772 | return NULL; | |
773 | switch (e->type) { | |
774 | case E_OR: | |
775 | case E_AND: | |
776 | sym = sym_check_expr_deps(e->left.expr); | |
777 | if (sym) | |
778 | return sym; | |
779 | return sym_check_expr_deps(e->right.expr); | |
780 | case E_NOT: | |
781 | return sym_check_expr_deps(e->left.expr); | |
782 | case E_EQUAL: | |
783 | case E_UNEQUAL: | |
784 | sym = sym_check_deps(e->left.sym); | |
785 | if (sym) | |
786 | return sym; | |
787 | return sym_check_deps(e->right.sym); | |
788 | case E_SYMBOL: | |
789 | return sym_check_deps(e->left.sym); | |
790 | default: | |
791 | break; | |
792 | } | |
793 | printf("Oops! How to check %d?\n", e->type); | |
794 | return NULL; | |
795 | } | |
796 | ||
5447d34b | 797 | /* return NULL when dependencies are OK */ |
1da177e4 LT |
798 | struct symbol *sym_check_deps(struct symbol *sym) |
799 | { | |
800 | struct symbol *sym2; | |
801 | struct property *prop; | |
802 | ||
1da177e4 | 803 | if (sym->flags & SYMBOL_CHECK) { |
5447d34b SR |
804 | fprintf(stderr, "%s:%d:error: found recursive dependency: %s", |
805 | sym->prop->file->name, sym->prop->lineno, sym->name); | |
1da177e4 LT |
806 | return sym; |
807 | } | |
3f04e7dd DG |
808 | if (sym->flags & SYMBOL_CHECKED) |
809 | return NULL; | |
1da177e4 LT |
810 | |
811 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
812 | sym2 = sym_check_expr_deps(sym->rev_dep.expr); | |
813 | if (sym2) | |
814 | goto out; | |
815 | ||
816 | for (prop = sym->prop; prop; prop = prop->next) { | |
817 | if (prop->type == P_CHOICE || prop->type == P_SELECT) | |
818 | continue; | |
819 | sym2 = sym_check_expr_deps(prop->visible.expr); | |
820 | if (sym2) | |
821 | goto out; | |
822 | if (prop->type != P_DEFAULT || sym_is_choice(sym)) | |
823 | continue; | |
824 | sym2 = sym_check_expr_deps(prop->expr); | |
825 | if (sym2) | |
826 | goto out; | |
827 | } | |
828 | out: | |
5447d34b SR |
829 | if (sym2) |
830 | fprintf(stderr, " -> %s%s", sym->name, sym2 == sym? "\n": ""); | |
1da177e4 LT |
831 | sym->flags &= ~SYMBOL_CHECK; |
832 | return sym2; | |
833 | } | |
834 | ||
835 | struct property *prop_alloc(enum prop_type type, struct symbol *sym) | |
836 | { | |
837 | struct property *prop; | |
838 | struct property **propp; | |
839 | ||
840 | prop = malloc(sizeof(*prop)); | |
841 | memset(prop, 0, sizeof(*prop)); | |
842 | prop->type = type; | |
843 | prop->sym = sym; | |
844 | prop->file = current_file; | |
845 | prop->lineno = zconf_lineno(); | |
846 | ||
847 | /* append property to the prop list of symbol */ | |
848 | if (sym) { | |
849 | for (propp = &sym->prop; *propp; propp = &(*propp)->next) | |
850 | ; | |
851 | *propp = prop; | |
852 | } | |
853 | ||
854 | return prop; | |
855 | } | |
856 | ||
857 | struct symbol *prop_get_symbol(struct property *prop) | |
858 | { | |
859 | if (prop->expr && (prop->expr->type == E_SYMBOL || | |
7a962923 | 860 | prop->expr->type == E_LIST)) |
1da177e4 LT |
861 | return prop->expr->left.sym; |
862 | return NULL; | |
863 | } | |
864 | ||
865 | const char *prop_get_type_name(enum prop_type type) | |
866 | { | |
867 | switch (type) { | |
868 | case P_PROMPT: | |
869 | return "prompt"; | |
93449082 RZ |
870 | case P_ENV: |
871 | return "env"; | |
1da177e4 LT |
872 | case P_COMMENT: |
873 | return "comment"; | |
874 | case P_MENU: | |
875 | return "menu"; | |
876 | case P_DEFAULT: | |
877 | return "default"; | |
878 | case P_CHOICE: | |
879 | return "choice"; | |
880 | case P_SELECT: | |
881 | return "select"; | |
882 | case P_RANGE: | |
883 | return "range"; | |
884 | case P_UNKNOWN: | |
885 | break; | |
886 | } | |
887 | return "unknown"; | |
888 | } | |
93449082 RZ |
889 | |
890 | void prop_add_env(const char *env) | |
891 | { | |
892 | struct symbol *sym, *sym2; | |
893 | struct property *prop; | |
894 | char *p; | |
895 | ||
896 | sym = current_entry->sym; | |
897 | sym->flags |= SYMBOL_AUTO; | |
898 | for_all_properties(sym, prop, P_ENV) { | |
899 | sym2 = prop_get_symbol(prop); | |
900 | if (strcmp(sym2->name, env)) | |
901 | menu_warn(current_entry, "redefining environment symbol from %s", | |
902 | sym2->name); | |
903 | return; | |
904 | } | |
905 | ||
906 | prop = prop_alloc(P_ENV, sym); | |
907 | prop->expr = expr_alloc_symbol(sym_lookup(env, 1)); | |
908 | ||
909 | sym_env_list = expr_alloc_one(E_LIST, sym_env_list); | |
910 | sym_env_list->right.sym = sym; | |
911 | ||
912 | p = getenv(env); | |
913 | if (p) | |
914 | sym_add_default(sym, p); | |
915 | else | |
916 | menu_warn(current_entry, "environment variable %s undefined", env); | |
917 | } |