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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 | ||
1da177e4 LT |
12 | #include "lkc.h" |
13 | ||
14 | struct symbol symbol_yes = { | |
15 | .name = "y", | |
16 | .curr = { "y", yes }, | |
c0e150ac | 17 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
1da177e4 LT |
18 | }, symbol_mod = { |
19 | .name = "m", | |
20 | .curr = { "m", mod }, | |
c0e150ac | 21 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
1da177e4 LT |
22 | }, symbol_no = { |
23 | .name = "n", | |
24 | .curr = { "n", no }, | |
c0e150ac | 25 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
1da177e4 LT |
26 | }, symbol_empty = { |
27 | .name = "", | |
28 | .curr = { "", no }, | |
29 | .flags = SYMBOL_VALID, | |
30 | }; | |
31 | ||
face4374 | 32 | struct symbol *sym_defconfig_list; |
1da177e4 LT |
33 | struct symbol *modules_sym; |
34 | tristate modules_val; | |
35 | ||
93449082 RZ |
36 | struct expr *sym_env_list; |
37 | ||
4356f489 | 38 | static void sym_add_default(struct symbol *sym, const char *def) |
1da177e4 LT |
39 | { |
40 | struct property *prop = prop_alloc(P_DEFAULT, sym); | |
41 | ||
5a1aa8a1 | 42 | prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST)); |
1da177e4 LT |
43 | } |
44 | ||
45 | void sym_init(void) | |
46 | { | |
47 | struct symbol *sym; | |
48 | struct utsname uts; | |
1da177e4 LT |
49 | static bool inited = false; |
50 | ||
51 | if (inited) | |
52 | return; | |
53 | inited = true; | |
54 | ||
55 | uname(&uts); | |
56 | ||
1da177e4 LT |
57 | sym = sym_lookup("UNAME_RELEASE", 0); |
58 | sym->type = S_STRING; | |
59 | sym->flags |= SYMBOL_AUTO; | |
60 | sym_add_default(sym, uts.release); | |
61 | } | |
62 | ||
63 | enum symbol_type sym_get_type(struct symbol *sym) | |
64 | { | |
65 | enum symbol_type type = sym->type; | |
66 | ||
67 | if (type == S_TRISTATE) { | |
68 | if (sym_is_choice_value(sym) && sym->visible == yes) | |
69 | type = S_BOOLEAN; | |
70 | else if (modules_val == no) | |
71 | type = S_BOOLEAN; | |
72 | } | |
73 | return type; | |
74 | } | |
75 | ||
76 | const char *sym_type_name(enum symbol_type type) | |
77 | { | |
78 | switch (type) { | |
79 | case S_BOOLEAN: | |
80 | return "boolean"; | |
81 | case S_TRISTATE: | |
82 | return "tristate"; | |
83 | case S_INT: | |
84 | return "integer"; | |
85 | case S_HEX: | |
86 | return "hex"; | |
87 | case S_STRING: | |
88 | return "string"; | |
89 | case S_UNKNOWN: | |
90 | return "unknown"; | |
91 | case S_OTHER: | |
92 | break; | |
93 | } | |
94 | return "???"; | |
95 | } | |
96 | ||
97 | struct property *sym_get_choice_prop(struct symbol *sym) | |
98 | { | |
99 | struct property *prop; | |
100 | ||
101 | for_all_choices(sym, prop) | |
102 | return prop; | |
103 | return NULL; | |
104 | } | |
105 | ||
93449082 RZ |
106 | struct property *sym_get_env_prop(struct symbol *sym) |
107 | { | |
108 | struct property *prop; | |
109 | ||
110 | for_all_properties(sym, prop, P_ENV) | |
111 | return prop; | |
112 | return NULL; | |
113 | } | |
114 | ||
1da177e4 LT |
115 | struct property *sym_get_default_prop(struct symbol *sym) |
116 | { | |
117 | struct property *prop; | |
118 | ||
119 | for_all_defaults(sym, prop) { | |
120 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
121 | if (prop->visible.tri != no) | |
122 | return prop; | |
123 | } | |
124 | return NULL; | |
125 | } | |
126 | ||
4356f489 | 127 | static struct property *sym_get_range_prop(struct symbol *sym) |
1da177e4 LT |
128 | { |
129 | struct property *prop; | |
130 | ||
131 | for_all_properties(sym, prop, P_RANGE) { | |
132 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
133 | if (prop->visible.tri != no) | |
134 | return prop; | |
135 | } | |
136 | return NULL; | |
137 | } | |
138 | ||
4cf3cbe2 RZ |
139 | static int sym_get_range_val(struct symbol *sym, int base) |
140 | { | |
141 | sym_calc_value(sym); | |
142 | switch (sym->type) { | |
143 | case S_INT: | |
144 | base = 10; | |
145 | break; | |
146 | case S_HEX: | |
147 | base = 16; | |
148 | break; | |
149 | default: | |
150 | break; | |
151 | } | |
152 | return strtol(sym->curr.val, NULL, base); | |
153 | } | |
154 | ||
155 | static void sym_validate_range(struct symbol *sym) | |
156 | { | |
157 | struct property *prop; | |
158 | int base, val, val2; | |
159 | char str[64]; | |
160 | ||
161 | switch (sym->type) { | |
162 | case S_INT: | |
163 | base = 10; | |
164 | break; | |
165 | case S_HEX: | |
166 | base = 16; | |
167 | break; | |
168 | default: | |
169 | return; | |
170 | } | |
171 | prop = sym_get_range_prop(sym); | |
172 | if (!prop) | |
173 | return; | |
174 | val = strtol(sym->curr.val, NULL, base); | |
175 | val2 = sym_get_range_val(prop->expr->left.sym, base); | |
176 | if (val >= val2) { | |
177 | val2 = sym_get_range_val(prop->expr->right.sym, base); | |
178 | if (val <= val2) | |
179 | return; | |
180 | } | |
181 | if (sym->type == S_INT) | |
182 | sprintf(str, "%d", val2); | |
183 | else | |
184 | sprintf(str, "0x%x", val2); | |
185 | sym->curr.val = strdup(str); | |
186 | } | |
187 | ||
1da177e4 LT |
188 | static void sym_calc_visibility(struct symbol *sym) |
189 | { | |
190 | struct property *prop; | |
191 | tristate tri; | |
192 | ||
193 | /* any prompt visible? */ | |
194 | tri = no; | |
195 | for_all_prompts(sym, prop) { | |
196 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
d6ee3576 | 197 | tri = EXPR_OR(tri, prop->visible.tri); |
1da177e4 LT |
198 | } |
199 | if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) | |
200 | tri = yes; | |
201 | if (sym->visible != tri) { | |
202 | sym->visible = tri; | |
203 | sym_set_changed(sym); | |
204 | } | |
205 | if (sym_is_choice_value(sym)) | |
206 | return; | |
246cf9c2 CM |
207 | /* defaulting to "yes" if no explicit "depends on" are given */ |
208 | tri = yes; | |
209 | if (sym->dir_dep.expr) | |
210 | tri = expr_calc_value(sym->dir_dep.expr); | |
211 | if (tri == mod) | |
212 | tri = yes; | |
213 | if (sym->dir_dep.tri != tri) { | |
214 | sym->dir_dep.tri = tri; | |
215 | sym_set_changed(sym); | |
216 | } | |
1da177e4 LT |
217 | tri = no; |
218 | if (sym->rev_dep.expr) | |
219 | tri = expr_calc_value(sym->rev_dep.expr); | |
220 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) | |
221 | tri = yes; | |
222 | if (sym->rev_dep.tri != tri) { | |
223 | sym->rev_dep.tri = tri; | |
224 | sym_set_changed(sym); | |
225 | } | |
226 | } | |
227 | ||
c252147d SR |
228 | /* |
229 | * Find the default symbol for a choice. | |
230 | * First try the default values for the choice symbol | |
231 | * Next locate the first visible choice value | |
232 | * Return NULL if none was found | |
233 | */ | |
234 | struct symbol *sym_choice_default(struct symbol *sym) | |
1da177e4 LT |
235 | { |
236 | struct symbol *def_sym; | |
237 | struct property *prop; | |
238 | struct expr *e; | |
239 | ||
1da177e4 LT |
240 | /* any of the defaults visible? */ |
241 | for_all_defaults(sym, prop) { | |
242 | prop->visible.tri = expr_calc_value(prop->visible.expr); | |
243 | if (prop->visible.tri == no) | |
244 | continue; | |
245 | def_sym = prop_get_symbol(prop); | |
1da177e4 LT |
246 | if (def_sym->visible != no) |
247 | return def_sym; | |
248 | } | |
249 | ||
250 | /* just get the first visible value */ | |
251 | prop = sym_get_choice_prop(sym); | |
0a28c47b | 252 | expr_list_for_each_sym(prop->expr, e, def_sym) |
1da177e4 LT |
253 | if (def_sym->visible != no) |
254 | return def_sym; | |
1da177e4 | 255 | |
c252147d | 256 | /* failed to locate any defaults */ |
1da177e4 LT |
257 | return NULL; |
258 | } | |
259 | ||
c252147d SR |
260 | static struct symbol *sym_calc_choice(struct symbol *sym) |
261 | { | |
262 | struct symbol *def_sym; | |
263 | struct property *prop; | |
264 | struct expr *e; | |
5d09598d | 265 | int flags; |
c252147d SR |
266 | |
267 | /* first calculate all choice values' visibilities */ | |
5d09598d | 268 | flags = sym->flags; |
c252147d | 269 | prop = sym_get_choice_prop(sym); |
5d09598d | 270 | expr_list_for_each_sym(prop->expr, e, def_sym) { |
c252147d | 271 | sym_calc_visibility(def_sym); |
5d09598d AL |
272 | if (def_sym->visible != no) |
273 | flags &= def_sym->flags; | |
274 | } | |
275 | ||
276 | sym->flags &= flags | ~SYMBOL_DEF_USER; | |
c252147d SR |
277 | |
278 | /* is the user choice visible? */ | |
279 | def_sym = sym->def[S_DEF_USER].val; | |
280 | if (def_sym && def_sym->visible != no) | |
281 | return def_sym; | |
282 | ||
283 | def_sym = sym_choice_default(sym); | |
284 | ||
285 | if (def_sym == NULL) | |
286 | /* no choice? reset tristate value */ | |
287 | sym->curr.tri = no; | |
288 | ||
289 | return def_sym; | |
290 | } | |
291 | ||
1da177e4 LT |
292 | void sym_calc_value(struct symbol *sym) |
293 | { | |
294 | struct symbol_value newval, oldval; | |
295 | struct property *prop; | |
296 | struct expr *e; | |
297 | ||
298 | if (!sym) | |
299 | return; | |
300 | ||
301 | if (sym->flags & SYMBOL_VALID) | |
302 | return; | |
303 | sym->flags |= SYMBOL_VALID; | |
304 | ||
305 | oldval = sym->curr; | |
306 | ||
307 | switch (sym->type) { | |
308 | case S_INT: | |
309 | case S_HEX: | |
310 | case S_STRING: | |
311 | newval = symbol_empty.curr; | |
312 | break; | |
313 | case S_BOOLEAN: | |
314 | case S_TRISTATE: | |
315 | newval = symbol_no.curr; | |
316 | break; | |
317 | default: | |
318 | sym->curr.val = sym->name; | |
319 | sym->curr.tri = no; | |
320 | return; | |
321 | } | |
322 | if (!sym_is_choice_value(sym)) | |
323 | sym->flags &= ~SYMBOL_WRITE; | |
324 | ||
325 | sym_calc_visibility(sym); | |
326 | ||
327 | /* set default if recursively called */ | |
328 | sym->curr = newval; | |
329 | ||
330 | switch (sym_get_type(sym)) { | |
331 | case S_BOOLEAN: | |
332 | case S_TRISTATE: | |
333 | if (sym_is_choice_value(sym) && sym->visible == yes) { | |
334 | prop = sym_get_choice_prop(sym); | |
335 | newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; | |
587c9061 RZ |
336 | } else { |
337 | if (sym->visible != no) { | |
338 | /* if the symbol is visible use the user value | |
339 | * if available, otherwise try the default value | |
340 | */ | |
341 | sym->flags |= SYMBOL_WRITE; | |
342 | if (sym_has_value(sym)) { | |
343 | newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri, | |
344 | sym->visible); | |
345 | goto calc_newval; | |
346 | } | |
1da177e4 | 347 | } |
587c9061 | 348 | if (sym->rev_dep.tri != no) |
1da177e4 | 349 | sym->flags |= SYMBOL_WRITE; |
587c9061 RZ |
350 | if (!sym_is_choice(sym)) { |
351 | prop = sym_get_default_prop(sym); | |
352 | if (prop) { | |
353 | sym->flags |= SYMBOL_WRITE; | |
354 | newval.tri = EXPR_AND(expr_calc_value(prop->expr), | |
355 | prop->visible.tri); | |
356 | } | |
1da177e4 | 357 | } |
587c9061 | 358 | calc_newval: |
246cf9c2 | 359 | if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) { |
1137c56b AL |
360 | struct expr *e; |
361 | e = expr_simplify_unmet_dep(sym->rev_dep.expr, | |
362 | sym->dir_dep.expr); | |
246cf9c2 | 363 | fprintf(stderr, "warning: ("); |
1137c56b | 364 | expr_fprint(e, stderr); |
246cf9c2 CM |
365 | fprintf(stderr, ") selects %s which has unmet direct dependencies (", |
366 | sym->name); | |
367 | expr_fprint(sym->dir_dep.expr, stderr); | |
368 | fprintf(stderr, ")\n"); | |
1137c56b | 369 | expr_free(e); |
246cf9c2 | 370 | } |
587c9061 | 371 | newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); |
1da177e4 LT |
372 | } |
373 | if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) | |
374 | newval.tri = yes; | |
375 | break; | |
376 | case S_STRING: | |
377 | case S_HEX: | |
378 | case S_INT: | |
379 | if (sym->visible != no) { | |
380 | sym->flags |= SYMBOL_WRITE; | |
381 | if (sym_has_value(sym)) { | |
0c1822e6 | 382 | newval.val = sym->def[S_DEF_USER].val; |
1da177e4 LT |
383 | break; |
384 | } | |
385 | } | |
386 | prop = sym_get_default_prop(sym); | |
387 | if (prop) { | |
388 | struct symbol *ds = prop_get_symbol(prop); | |
389 | if (ds) { | |
390 | sym->flags |= SYMBOL_WRITE; | |
391 | sym_calc_value(ds); | |
392 | newval.val = ds->curr.val; | |
393 | } | |
394 | } | |
395 | break; | |
396 | default: | |
397 | ; | |
398 | } | |
399 | ||
400 | sym->curr = newval; | |
401 | if (sym_is_choice(sym) && newval.tri == yes) | |
402 | sym->curr.val = sym_calc_choice(sym); | |
4cf3cbe2 | 403 | sym_validate_range(sym); |
1da177e4 | 404 | |
face4374 | 405 | if (memcmp(&oldval, &sym->curr, sizeof(oldval))) { |
1da177e4 | 406 | sym_set_changed(sym); |
face4374 RZ |
407 | if (modules_sym == sym) { |
408 | sym_set_all_changed(); | |
409 | modules_val = modules_sym->curr.tri; | |
410 | } | |
411 | } | |
1da177e4 LT |
412 | |
413 | if (sym_is_choice(sym)) { | |
7a962923 | 414 | struct symbol *choice_sym; |
7a962923 | 415 | |
1da177e4 | 416 | prop = sym_get_choice_prop(sym); |
7a962923 | 417 | expr_list_for_each_sym(prop->expr, e, choice_sym) { |
0a28c47b JB |
418 | if ((sym->flags & SYMBOL_WRITE) && |
419 | choice_sym->visible != no) | |
420 | choice_sym->flags |= SYMBOL_WRITE; | |
421 | if (sym->flags & SYMBOL_CHANGED) | |
7a962923 | 422 | sym_set_changed(choice_sym); |
1da177e4 LT |
423 | } |
424 | } | |
5a1aa8a1 RZ |
425 | |
426 | if (sym->flags & SYMBOL_AUTO) | |
427 | sym->flags &= ~SYMBOL_WRITE; | |
1da177e4 LT |
428 | } |
429 | ||
430 | void sym_clear_all_valid(void) | |
431 | { | |
432 | struct symbol *sym; | |
433 | int i; | |
434 | ||
435 | for_all_symbols(i, sym) | |
436 | sym->flags &= ~SYMBOL_VALID; | |
bfc10001 | 437 | sym_add_change_count(1); |
1da177e4 LT |
438 | if (modules_sym) |
439 | sym_calc_value(modules_sym); | |
440 | } | |
441 | ||
442 | void sym_set_changed(struct symbol *sym) | |
443 | { | |
444 | struct property *prop; | |
445 | ||
446 | sym->flags |= SYMBOL_CHANGED; | |
447 | for (prop = sym->prop; prop; prop = prop->next) { | |
448 | if (prop->menu) | |
449 | prop->menu->flags |= MENU_CHANGED; | |
450 | } | |
451 | } | |
452 | ||
453 | void sym_set_all_changed(void) | |
454 | { | |
455 | struct symbol *sym; | |
456 | int i; | |
457 | ||
458 | for_all_symbols(i, sym) | |
459 | sym_set_changed(sym); | |
460 | } | |
461 | ||
462 | bool sym_tristate_within_range(struct symbol *sym, tristate val) | |
463 | { | |
464 | int type = sym_get_type(sym); | |
465 | ||
466 | if (sym->visible == no) | |
467 | return false; | |
468 | ||
469 | if (type != S_BOOLEAN && type != S_TRISTATE) | |
470 | return false; | |
471 | ||
472 | if (type == S_BOOLEAN && val == mod) | |
473 | return false; | |
474 | if (sym->visible <= sym->rev_dep.tri) | |
475 | return false; | |
476 | if (sym_is_choice_value(sym) && sym->visible == yes) | |
477 | return val == yes; | |
478 | return val >= sym->rev_dep.tri && val <= sym->visible; | |
479 | } | |
480 | ||
481 | bool sym_set_tristate_value(struct symbol *sym, tristate val) | |
482 | { | |
483 | tristate oldval = sym_get_tristate_value(sym); | |
484 | ||
485 | if (oldval != val && !sym_tristate_within_range(sym, val)) | |
486 | return false; | |
487 | ||
669bfad9 RZ |
488 | if (!(sym->flags & SYMBOL_DEF_USER)) { |
489 | sym->flags |= SYMBOL_DEF_USER; | |
1da177e4 LT |
490 | sym_set_changed(sym); |
491 | } | |
3f23ca2b RZ |
492 | /* |
493 | * setting a choice value also resets the new flag of the choice | |
494 | * symbol and all other choice values. | |
495 | */ | |
1da177e4 LT |
496 | if (sym_is_choice_value(sym) && val == yes) { |
497 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
3f23ca2b RZ |
498 | struct property *prop; |
499 | struct expr *e; | |
1da177e4 | 500 | |
0c1822e6 | 501 | cs->def[S_DEF_USER].val = sym; |
669bfad9 | 502 | cs->flags |= SYMBOL_DEF_USER; |
3f23ca2b RZ |
503 | prop = sym_get_choice_prop(cs); |
504 | for (e = prop->expr; e; e = e->left.expr) { | |
505 | if (e->right.sym->visible != no) | |
669bfad9 | 506 | e->right.sym->flags |= SYMBOL_DEF_USER; |
3f23ca2b | 507 | } |
1da177e4 LT |
508 | } |
509 | ||
0c1822e6 | 510 | sym->def[S_DEF_USER].tri = val; |
face4374 | 511 | if (oldval != val) |
1da177e4 | 512 | sym_clear_all_valid(); |
1da177e4 LT |
513 | |
514 | return true; | |
515 | } | |
516 | ||
517 | tristate sym_toggle_tristate_value(struct symbol *sym) | |
518 | { | |
519 | tristate oldval, newval; | |
520 | ||
521 | oldval = newval = sym_get_tristate_value(sym); | |
522 | do { | |
523 | switch (newval) { | |
524 | case no: | |
525 | newval = mod; | |
526 | break; | |
527 | case mod: | |
528 | newval = yes; | |
529 | break; | |
530 | case yes: | |
531 | newval = no; | |
532 | break; | |
533 | } | |
534 | if (sym_set_tristate_value(sym, newval)) | |
535 | break; | |
536 | } while (oldval != newval); | |
537 | return newval; | |
538 | } | |
539 | ||
540 | bool sym_string_valid(struct symbol *sym, const char *str) | |
541 | { | |
542 | signed char ch; | |
543 | ||
544 | switch (sym->type) { | |
545 | case S_STRING: | |
546 | return true; | |
547 | case S_INT: | |
548 | ch = *str++; | |
549 | if (ch == '-') | |
550 | ch = *str++; | |
551 | if (!isdigit(ch)) | |
552 | return false; | |
553 | if (ch == '0' && *str != 0) | |
554 | return false; | |
555 | while ((ch = *str++)) { | |
556 | if (!isdigit(ch)) | |
557 | return false; | |
558 | } | |
559 | return true; | |
560 | case S_HEX: | |
561 | if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) | |
562 | str += 2; | |
563 | ch = *str++; | |
564 | do { | |
565 | if (!isxdigit(ch)) | |
566 | return false; | |
567 | } while ((ch = *str++)); | |
568 | return true; | |
569 | case S_BOOLEAN: | |
570 | case S_TRISTATE: | |
571 | switch (str[0]) { | |
572 | case 'y': case 'Y': | |
573 | case 'm': case 'M': | |
574 | case 'n': case 'N': | |
575 | return true; | |
576 | } | |
577 | return false; | |
578 | default: | |
579 | return false; | |
580 | } | |
581 | } | |
582 | ||
583 | bool sym_string_within_range(struct symbol *sym, const char *str) | |
584 | { | |
585 | struct property *prop; | |
586 | int val; | |
587 | ||
588 | switch (sym->type) { | |
589 | case S_STRING: | |
590 | return sym_string_valid(sym, str); | |
591 | case S_INT: | |
592 | if (!sym_string_valid(sym, str)) | |
593 | return false; | |
594 | prop = sym_get_range_prop(sym); | |
595 | if (!prop) | |
596 | return true; | |
597 | val = strtol(str, NULL, 10); | |
4cf3cbe2 RZ |
598 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
599 | val <= sym_get_range_val(prop->expr->right.sym, 10); | |
1da177e4 LT |
600 | case S_HEX: |
601 | if (!sym_string_valid(sym, str)) | |
602 | return false; | |
603 | prop = sym_get_range_prop(sym); | |
604 | if (!prop) | |
605 | return true; | |
606 | val = strtol(str, NULL, 16); | |
4cf3cbe2 RZ |
607 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
608 | val <= sym_get_range_val(prop->expr->right.sym, 16); | |
1da177e4 LT |
609 | case S_BOOLEAN: |
610 | case S_TRISTATE: | |
611 | switch (str[0]) { | |
612 | case 'y': case 'Y': | |
613 | return sym_tristate_within_range(sym, yes); | |
614 | case 'm': case 'M': | |
615 | return sym_tristate_within_range(sym, mod); | |
616 | case 'n': case 'N': | |
617 | return sym_tristate_within_range(sym, no); | |
618 | } | |
619 | return false; | |
620 | default: | |
621 | return false; | |
622 | } | |
623 | } | |
624 | ||
625 | bool sym_set_string_value(struct symbol *sym, const char *newval) | |
626 | { | |
627 | const char *oldval; | |
628 | char *val; | |
629 | int size; | |
630 | ||
631 | switch (sym->type) { | |
632 | case S_BOOLEAN: | |
633 | case S_TRISTATE: | |
634 | switch (newval[0]) { | |
635 | case 'y': case 'Y': | |
636 | return sym_set_tristate_value(sym, yes); | |
637 | case 'm': case 'M': | |
638 | return sym_set_tristate_value(sym, mod); | |
639 | case 'n': case 'N': | |
640 | return sym_set_tristate_value(sym, no); | |
641 | } | |
642 | return false; | |
643 | default: | |
644 | ; | |
645 | } | |
646 | ||
647 | if (!sym_string_within_range(sym, newval)) | |
648 | return false; | |
649 | ||
669bfad9 RZ |
650 | if (!(sym->flags & SYMBOL_DEF_USER)) { |
651 | sym->flags |= SYMBOL_DEF_USER; | |
1da177e4 LT |
652 | sym_set_changed(sym); |
653 | } | |
654 | ||
0c1822e6 | 655 | oldval = sym->def[S_DEF_USER].val; |
1da177e4 LT |
656 | size = strlen(newval) + 1; |
657 | if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { | |
658 | size += 2; | |
0c1822e6 | 659 | sym->def[S_DEF_USER].val = val = malloc(size); |
1da177e4 LT |
660 | *val++ = '0'; |
661 | *val++ = 'x'; | |
662 | } else if (!oldval || strcmp(oldval, newval)) | |
0c1822e6 | 663 | sym->def[S_DEF_USER].val = val = malloc(size); |
1da177e4 LT |
664 | else |
665 | return true; | |
666 | ||
667 | strcpy(val, newval); | |
668 | free((void *)oldval); | |
669 | sym_clear_all_valid(); | |
670 | ||
671 | return true; | |
672 | } | |
673 | ||
7cf3d73b SR |
674 | /* |
675 | * Find the default value associated to a symbol. | |
676 | * For tristate symbol handle the modules=n case | |
677 | * in which case "m" becomes "y". | |
678 | * If the symbol does not have any default then fallback | |
679 | * to the fixed default values. | |
680 | */ | |
681 | const char *sym_get_string_default(struct symbol *sym) | |
682 | { | |
683 | struct property *prop; | |
684 | struct symbol *ds; | |
685 | const char *str; | |
686 | tristate val; | |
687 | ||
688 | sym_calc_visibility(sym); | |
689 | sym_calc_value(modules_sym); | |
690 | val = symbol_no.curr.tri; | |
691 | str = symbol_empty.curr.val; | |
692 | ||
693 | /* If symbol has a default value look it up */ | |
694 | prop = sym_get_default_prop(sym); | |
695 | if (prop != NULL) { | |
696 | switch (sym->type) { | |
697 | case S_BOOLEAN: | |
698 | case S_TRISTATE: | |
579fb8e7 | 699 | /* The visibility may limit the value from yes => mod */ |
7cf3d73b SR |
700 | val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); |
701 | break; | |
702 | default: | |
703 | /* | |
704 | * The following fails to handle the situation | |
705 | * where a default value is further limited by | |
706 | * the valid range. | |
707 | */ | |
708 | ds = prop_get_symbol(prop); | |
709 | if (ds != NULL) { | |
710 | sym_calc_value(ds); | |
711 | str = (const char *)ds->curr.val; | |
712 | } | |
713 | } | |
714 | } | |
715 | ||
716 | /* Handle select statements */ | |
717 | val = EXPR_OR(val, sym->rev_dep.tri); | |
718 | ||
719 | /* transpose mod to yes if modules are not enabled */ | |
720 | if (val == mod) | |
721 | if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no) | |
722 | val = yes; | |
723 | ||
724 | /* transpose mod to yes if type is bool */ | |
725 | if (sym->type == S_BOOLEAN && val == mod) | |
726 | val = yes; | |
727 | ||
728 | switch (sym->type) { | |
729 | case S_BOOLEAN: | |
730 | case S_TRISTATE: | |
731 | switch (val) { | |
732 | case no: return "n"; | |
733 | case mod: return "m"; | |
734 | case yes: return "y"; | |
735 | } | |
736 | case S_INT: | |
737 | case S_HEX: | |
738 | return str; | |
739 | case S_STRING: | |
740 | return str; | |
741 | case S_OTHER: | |
742 | case S_UNKNOWN: | |
743 | break; | |
744 | } | |
745 | return ""; | |
746 | } | |
747 | ||
1da177e4 LT |
748 | const char *sym_get_string_value(struct symbol *sym) |
749 | { | |
750 | tristate val; | |
751 | ||
752 | switch (sym->type) { | |
753 | case S_BOOLEAN: | |
754 | case S_TRISTATE: | |
755 | val = sym_get_tristate_value(sym); | |
756 | switch (val) { | |
757 | case no: | |
758 | return "n"; | |
759 | case mod: | |
e54e692b AL |
760 | sym_calc_value(modules_sym); |
761 | return (modules_sym->curr.tri == no) ? "n" : "m"; | |
1da177e4 LT |
762 | case yes: |
763 | return "y"; | |
764 | } | |
765 | break; | |
766 | default: | |
767 | ; | |
768 | } | |
769 | return (const char *)sym->curr.val; | |
770 | } | |
771 | ||
772 | bool sym_is_changable(struct symbol *sym) | |
773 | { | |
774 | return sym->visible > sym->rev_dep.tri; | |
775 | } | |
776 | ||
e66f25d7 AK |
777 | static unsigned strhash(const char *s) |
778 | { | |
779 | /* fnv32 hash */ | |
780 | unsigned hash = 2166136261U; | |
781 | for (; *s; s++) | |
782 | hash = (hash ^ *s) * 0x01000193; | |
783 | return hash; | |
784 | } | |
785 | ||
5a1aa8a1 | 786 | struct symbol *sym_lookup(const char *name, int flags) |
1da177e4 LT |
787 | { |
788 | struct symbol *symbol; | |
1da177e4 | 789 | char *new_name; |
e66f25d7 | 790 | int hash; |
1da177e4 LT |
791 | |
792 | if (name) { | |
793 | if (name[0] && !name[1]) { | |
794 | switch (name[0]) { | |
795 | case 'y': return &symbol_yes; | |
796 | case 'm': return &symbol_mod; | |
797 | case 'n': return &symbol_no; | |
798 | } | |
799 | } | |
e66f25d7 | 800 | hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4 LT |
801 | |
802 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
e66f25d7 AK |
803 | if (symbol->name && |
804 | !strcmp(symbol->name, name) && | |
5a1aa8a1 RZ |
805 | (flags ? symbol->flags & flags |
806 | : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE)))) | |
807 | return symbol; | |
1da177e4 LT |
808 | } |
809 | new_name = strdup(name); | |
810 | } else { | |
811 | new_name = NULL; | |
e66f25d7 | 812 | hash = 0; |
1da177e4 LT |
813 | } |
814 | ||
815 | symbol = malloc(sizeof(*symbol)); | |
816 | memset(symbol, 0, sizeof(*symbol)); | |
817 | symbol->name = new_name; | |
818 | symbol->type = S_UNKNOWN; | |
5a1aa8a1 | 819 | symbol->flags |= flags; |
1da177e4 LT |
820 | |
821 | symbol->next = symbol_hash[hash]; | |
822 | symbol_hash[hash] = symbol; | |
823 | ||
824 | return symbol; | |
825 | } | |
826 | ||
827 | struct symbol *sym_find(const char *name) | |
828 | { | |
829 | struct symbol *symbol = NULL; | |
1da177e4 LT |
830 | int hash = 0; |
831 | ||
832 | if (!name) | |
833 | return NULL; | |
834 | ||
835 | if (name[0] && !name[1]) { | |
836 | switch (name[0]) { | |
837 | case 'y': return &symbol_yes; | |
838 | case 'm': return &symbol_mod; | |
839 | case 'n': return &symbol_no; | |
840 | } | |
841 | } | |
e66f25d7 | 842 | hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4 LT |
843 | |
844 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { | |
e66f25d7 AK |
845 | if (symbol->name && |
846 | !strcmp(symbol->name, name) && | |
1da177e4 LT |
847 | !(symbol->flags & SYMBOL_CONST)) |
848 | break; | |
849 | } | |
850 | ||
851 | return symbol; | |
852 | } | |
853 | ||
76a54095 AL |
854 | /* |
855 | * Expand symbol's names embedded in the string given in argument. Symbols' | |
856 | * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to | |
857 | * the empty string. | |
858 | */ | |
859 | const char *sym_expand_string_value(const char *in) | |
860 | { | |
861 | const char *src; | |
862 | char *res; | |
863 | size_t reslen; | |
864 | ||
865 | reslen = strlen(in) + 1; | |
866 | res = malloc(reslen); | |
867 | res[0] = '\0'; | |
868 | ||
869 | while ((src = strchr(in, '$'))) { | |
870 | char *p, name[SYMBOL_MAXLENGTH]; | |
871 | const char *symval = ""; | |
872 | struct symbol *sym; | |
873 | size_t newlen; | |
874 | ||
875 | strncat(res, in, src - in); | |
876 | src++; | |
877 | ||
878 | p = name; | |
879 | while (isalnum(*src) || *src == '_') | |
880 | *p++ = *src++; | |
881 | *p = '\0'; | |
882 | ||
883 | sym = sym_find(name); | |
884 | if (sym != NULL) { | |
885 | sym_calc_value(sym); | |
886 | symval = sym_get_string_value(sym); | |
887 | } | |
888 | ||
020e773f | 889 | newlen = strlen(res) + strlen(symval) + strlen(src) + 1; |
76a54095 AL |
890 | if (newlen > reslen) { |
891 | reslen = newlen; | |
19c29f32 | 892 | res = realloc(res, reslen); |
76a54095 AL |
893 | } |
894 | ||
895 | strcat(res, symval); | |
896 | in = src; | |
897 | } | |
898 | strcat(res, in); | |
899 | ||
900 | return res; | |
901 | } | |
902 | ||
e54e692b AL |
903 | const char *sym_escape_string_value(const char *in) |
904 | { | |
905 | const char *p; | |
906 | size_t reslen; | |
907 | char *res; | |
908 | size_t l; | |
909 | ||
910 | reslen = strlen(in) + strlen("\"\"") + 1; | |
911 | ||
912 | p = in; | |
913 | for (;;) { | |
914 | l = strcspn(p, "\"\\"); | |
915 | p += l; | |
916 | ||
917 | if (p[0] == '\0') | |
918 | break; | |
919 | ||
920 | reslen++; | |
921 | p++; | |
922 | } | |
923 | ||
924 | res = malloc(reslen); | |
925 | res[0] = '\0'; | |
926 | ||
927 | strcat(res, "\""); | |
928 | ||
929 | p = in; | |
930 | for (;;) { | |
931 | l = strcspn(p, "\"\\"); | |
932 | strncat(res, p, l); | |
933 | p += l; | |
934 | ||
935 | if (p[0] == '\0') | |
936 | break; | |
937 | ||
938 | strcat(res, "\\"); | |
939 | strncat(res, p++, 1); | |
940 | } | |
941 | ||
942 | strcat(res, "\""); | |
943 | return res; | |
944 | } | |
945 | ||
1da177e4 LT |
946 | struct symbol **sym_re_search(const char *pattern) |
947 | { | |
948 | struct symbol *sym, **sym_arr = NULL; | |
949 | int i, cnt, size; | |
950 | regex_t re; | |
951 | ||
952 | cnt = size = 0; | |
953 | /* Skip if empty */ | |
954 | if (strlen(pattern) == 0) | |
955 | return NULL; | |
956 | if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE)) | |
957 | return NULL; | |
958 | ||
959 | for_all_symbols(i, sym) { | |
960 | if (sym->flags & SYMBOL_CONST || !sym->name) | |
961 | continue; | |
962 | if (regexec(&re, sym->name, 0, NULL, 0)) | |
963 | continue; | |
964 | if (cnt + 1 >= size) { | |
965 | void *tmp = sym_arr; | |
966 | size += 16; | |
967 | sym_arr = realloc(sym_arr, size * sizeof(struct symbol *)); | |
968 | if (!sym_arr) { | |
969 | free(tmp); | |
970 | return NULL; | |
971 | } | |
972 | } | |
da6df879 | 973 | sym_calc_value(sym); |
1da177e4 LT |
974 | sym_arr[cnt++] = sym; |
975 | } | |
976 | if (sym_arr) | |
977 | sym_arr[cnt] = NULL; | |
978 | regfree(&re); | |
979 | ||
980 | return sym_arr; | |
981 | } | |
982 | ||
d595cea6 RZ |
983 | /* |
984 | * When we check for recursive dependencies we use a stack to save | |
985 | * current state so we can print out relevant info to user. | |
986 | * The entries are located on the call stack so no need to free memory. | |
987 | * Note inser() remove() must always match to properly clear the stack. | |
988 | */ | |
989 | static struct dep_stack { | |
990 | struct dep_stack *prev, *next; | |
991 | struct symbol *sym; | |
992 | struct property *prop; | |
993 | struct expr *expr; | |
994 | } *check_top; | |
995 | ||
996 | static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym) | |
997 | { | |
998 | memset(stack, 0, sizeof(*stack)); | |
999 | if (check_top) | |
1000 | check_top->next = stack; | |
1001 | stack->prev = check_top; | |
1002 | stack->sym = sym; | |
1003 | check_top = stack; | |
1004 | } | |
1005 | ||
1006 | static void dep_stack_remove(void) | |
1007 | { | |
1008 | check_top = check_top->prev; | |
1009 | if (check_top) | |
1010 | check_top->next = NULL; | |
1011 | } | |
1012 | ||
1013 | /* | |
1014 | * Called when we have detected a recursive dependency. | |
1015 | * check_top point to the top of the stact so we use | |
1016 | * the ->prev pointer to locate the bottom of the stack. | |
1017 | */ | |
1018 | static void sym_check_print_recursive(struct symbol *last_sym) | |
1019 | { | |
1020 | struct dep_stack *stack; | |
1021 | struct symbol *sym, *next_sym; | |
1022 | struct menu *menu = NULL; | |
1023 | struct property *prop; | |
1024 | struct dep_stack cv_stack; | |
1025 | ||
1026 | if (sym_is_choice_value(last_sym)) { | |
1027 | dep_stack_insert(&cv_stack, last_sym); | |
1028 | last_sym = prop_get_symbol(sym_get_choice_prop(last_sym)); | |
1029 | } | |
1030 | ||
1031 | for (stack = check_top; stack != NULL; stack = stack->prev) | |
1032 | if (stack->sym == last_sym) | |
1033 | break; | |
1034 | if (!stack) { | |
1035 | fprintf(stderr, "unexpected recursive dependency error\n"); | |
1036 | return; | |
1037 | } | |
1038 | ||
1039 | for (; stack; stack = stack->next) { | |
1040 | sym = stack->sym; | |
1041 | next_sym = stack->next ? stack->next->sym : last_sym; | |
1042 | prop = stack->prop; | |
3643f849 SR |
1043 | if (prop == NULL) |
1044 | prop = stack->sym->prop; | |
d595cea6 RZ |
1045 | |
1046 | /* for choice values find the menu entry (used below) */ | |
1047 | if (sym_is_choice(sym) || sym_is_choice_value(sym)) { | |
1048 | for (prop = sym->prop; prop; prop = prop->next) { | |
1049 | menu = prop->menu; | |
1050 | if (prop->menu) | |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | if (stack->sym == last_sym) | |
1055 | fprintf(stderr, "%s:%d:error: recursive dependency detected!\n", | |
1056 | prop->file->name, prop->lineno); | |
1057 | if (stack->expr) { | |
1058 | fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n", | |
1059 | prop->file->name, prop->lineno, | |
1060 | sym->name ? sym->name : "<choice>", | |
1061 | prop_get_type_name(prop->type), | |
1062 | next_sym->name ? next_sym->name : "<choice>"); | |
1063 | } else if (stack->prop) { | |
1064 | fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n", | |
1065 | prop->file->name, prop->lineno, | |
1066 | sym->name ? sym->name : "<choice>", | |
1067 | next_sym->name ? next_sym->name : "<choice>"); | |
1068 | } else if (sym_is_choice(sym)) { | |
1069 | fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n", | |
1070 | menu->file->name, menu->lineno, | |
1071 | sym->name ? sym->name : "<choice>", | |
1072 | next_sym->name ? next_sym->name : "<choice>"); | |
1073 | } else if (sym_is_choice_value(sym)) { | |
1074 | fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n", | |
1075 | menu->file->name, menu->lineno, | |
1076 | sym->name ? sym->name : "<choice>", | |
1077 | next_sym->name ? next_sym->name : "<choice>"); | |
1078 | } else { | |
1079 | fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n", | |
1080 | prop->file->name, prop->lineno, | |
1081 | sym->name ? sym->name : "<choice>", | |
1082 | next_sym->name ? next_sym->name : "<choice>"); | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | if (check_top == &cv_stack) | |
1087 | dep_stack_remove(); | |
1088 | } | |
1da177e4 | 1089 | |
1da177e4 LT |
1090 | static struct symbol *sym_check_expr_deps(struct expr *e) |
1091 | { | |
1092 | struct symbol *sym; | |
1093 | ||
1094 | if (!e) | |
1095 | return NULL; | |
1096 | switch (e->type) { | |
1097 | case E_OR: | |
1098 | case E_AND: | |
1099 | sym = sym_check_expr_deps(e->left.expr); | |
1100 | if (sym) | |
1101 | return sym; | |
1102 | return sym_check_expr_deps(e->right.expr); | |
1103 | case E_NOT: | |
1104 | return sym_check_expr_deps(e->left.expr); | |
1105 | case E_EQUAL: | |
1106 | case E_UNEQUAL: | |
1107 | sym = sym_check_deps(e->left.sym); | |
1108 | if (sym) | |
1109 | return sym; | |
1110 | return sym_check_deps(e->right.sym); | |
1111 | case E_SYMBOL: | |
1112 | return sym_check_deps(e->left.sym); | |
1113 | default: | |
1114 | break; | |
1115 | } | |
1116 | printf("Oops! How to check %d?\n", e->type); | |
1117 | return NULL; | |
1118 | } | |
1119 | ||
5447d34b | 1120 | /* return NULL when dependencies are OK */ |
48981178 | 1121 | static struct symbol *sym_check_sym_deps(struct symbol *sym) |
1da177e4 LT |
1122 | { |
1123 | struct symbol *sym2; | |
1124 | struct property *prop; | |
d595cea6 RZ |
1125 | struct dep_stack stack; |
1126 | ||
1127 | dep_stack_insert(&stack, sym); | |
1da177e4 | 1128 | |
1da177e4 LT |
1129 | sym2 = sym_check_expr_deps(sym->rev_dep.expr); |
1130 | if (sym2) | |
d595cea6 | 1131 | goto out; |
1da177e4 LT |
1132 | |
1133 | for (prop = sym->prop; prop; prop = prop->next) { | |
1134 | if (prop->type == P_CHOICE || prop->type == P_SELECT) | |
1135 | continue; | |
d595cea6 | 1136 | stack.prop = prop; |
1da177e4 LT |
1137 | sym2 = sym_check_expr_deps(prop->visible.expr); |
1138 | if (sym2) | |
48981178 | 1139 | break; |
1da177e4 LT |
1140 | if (prop->type != P_DEFAULT || sym_is_choice(sym)) |
1141 | continue; | |
d595cea6 | 1142 | stack.expr = prop->expr; |
1da177e4 LT |
1143 | sym2 = sym_check_expr_deps(prop->expr); |
1144 | if (sym2) | |
48981178 | 1145 | break; |
d595cea6 | 1146 | stack.expr = NULL; |
1da177e4 | 1147 | } |
48981178 | 1148 | |
d595cea6 RZ |
1149 | out: |
1150 | dep_stack_remove(); | |
1151 | ||
48981178 RZ |
1152 | return sym2; |
1153 | } | |
1154 | ||
1155 | static struct symbol *sym_check_choice_deps(struct symbol *choice) | |
1156 | { | |
1157 | struct symbol *sym, *sym2; | |
1158 | struct property *prop; | |
1159 | struct expr *e; | |
d595cea6 RZ |
1160 | struct dep_stack stack; |
1161 | ||
1162 | dep_stack_insert(&stack, choice); | |
48981178 RZ |
1163 | |
1164 | prop = sym_get_choice_prop(choice); | |
1165 | expr_list_for_each_sym(prop->expr, e, sym) | |
1166 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
1167 | ||
1168 | choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
1169 | sym2 = sym_check_sym_deps(choice); | |
1170 | choice->flags &= ~SYMBOL_CHECK; | |
5447d34b | 1171 | if (sym2) |
48981178 RZ |
1172 | goto out; |
1173 | ||
1174 | expr_list_for_each_sym(prop->expr, e, sym) { | |
1175 | sym2 = sym_check_sym_deps(sym); | |
d595cea6 | 1176 | if (sym2) |
48981178 | 1177 | break; |
48981178 RZ |
1178 | } |
1179 | out: | |
1180 | expr_list_for_each_sym(prop->expr, e, sym) | |
1181 | sym->flags &= ~SYMBOL_CHECK; | |
1182 | ||
1183 | if (sym2 && sym_is_choice_value(sym2) && | |
1184 | prop_get_symbol(sym_get_choice_prop(sym2)) == choice) | |
1185 | sym2 = choice; | |
1186 | ||
d595cea6 RZ |
1187 | dep_stack_remove(); |
1188 | ||
48981178 RZ |
1189 | return sym2; |
1190 | } | |
1191 | ||
1192 | struct symbol *sym_check_deps(struct symbol *sym) | |
1193 | { | |
1194 | struct symbol *sym2; | |
1195 | struct property *prop; | |
1196 | ||
1197 | if (sym->flags & SYMBOL_CHECK) { | |
d595cea6 | 1198 | sym_check_print_recursive(sym); |
48981178 RZ |
1199 | return sym; |
1200 | } | |
1201 | if (sym->flags & SYMBOL_CHECKED) | |
1202 | return NULL; | |
1203 | ||
1204 | if (sym_is_choice_value(sym)) { | |
d595cea6 RZ |
1205 | struct dep_stack stack; |
1206 | ||
48981178 | 1207 | /* for choice groups start the check with main choice symbol */ |
d595cea6 | 1208 | dep_stack_insert(&stack, sym); |
48981178 RZ |
1209 | prop = sym_get_choice_prop(sym); |
1210 | sym2 = sym_check_deps(prop_get_symbol(prop)); | |
d595cea6 | 1211 | dep_stack_remove(); |
48981178 RZ |
1212 | } else if (sym_is_choice(sym)) { |
1213 | sym2 = sym_check_choice_deps(sym); | |
1214 | } else { | |
1215 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); | |
1216 | sym2 = sym_check_sym_deps(sym); | |
1217 | sym->flags &= ~SYMBOL_CHECK; | |
1218 | } | |
1219 | ||
d595cea6 RZ |
1220 | if (sym2 && sym2 == sym) |
1221 | sym2 = NULL; | |
48981178 | 1222 | |
1da177e4 LT |
1223 | return sym2; |
1224 | } | |
1225 | ||
1226 | struct property *prop_alloc(enum prop_type type, struct symbol *sym) | |
1227 | { | |
1228 | struct property *prop; | |
1229 | struct property **propp; | |
1230 | ||
1231 | prop = malloc(sizeof(*prop)); | |
1232 | memset(prop, 0, sizeof(*prop)); | |
1233 | prop->type = type; | |
1234 | prop->sym = sym; | |
1235 | prop->file = current_file; | |
1236 | prop->lineno = zconf_lineno(); | |
1237 | ||
1238 | /* append property to the prop list of symbol */ | |
1239 | if (sym) { | |
1240 | for (propp = &sym->prop; *propp; propp = &(*propp)->next) | |
1241 | ; | |
1242 | *propp = prop; | |
1243 | } | |
1244 | ||
1245 | return prop; | |
1246 | } | |
1247 | ||
1248 | struct symbol *prop_get_symbol(struct property *prop) | |
1249 | { | |
1250 | if (prop->expr && (prop->expr->type == E_SYMBOL || | |
7a962923 | 1251 | prop->expr->type == E_LIST)) |
1da177e4 LT |
1252 | return prop->expr->left.sym; |
1253 | return NULL; | |
1254 | } | |
1255 | ||
1256 | const char *prop_get_type_name(enum prop_type type) | |
1257 | { | |
1258 | switch (type) { | |
1259 | case P_PROMPT: | |
1260 | return "prompt"; | |
93449082 RZ |
1261 | case P_ENV: |
1262 | return "env"; | |
1da177e4 LT |
1263 | case P_COMMENT: |
1264 | return "comment"; | |
1265 | case P_MENU: | |
1266 | return "menu"; | |
1267 | case P_DEFAULT: | |
1268 | return "default"; | |
1269 | case P_CHOICE: | |
1270 | return "choice"; | |
1271 | case P_SELECT: | |
1272 | return "select"; | |
1273 | case P_RANGE: | |
1274 | return "range"; | |
59e89e3d SR |
1275 | case P_SYMBOL: |
1276 | return "symbol"; | |
1da177e4 LT |
1277 | case P_UNKNOWN: |
1278 | break; | |
1279 | } | |
1280 | return "unknown"; | |
1281 | } | |
93449082 | 1282 | |
4356f489 | 1283 | static void prop_add_env(const char *env) |
93449082 RZ |
1284 | { |
1285 | struct symbol *sym, *sym2; | |
1286 | struct property *prop; | |
1287 | char *p; | |
1288 | ||
1289 | sym = current_entry->sym; | |
1290 | sym->flags |= SYMBOL_AUTO; | |
1291 | for_all_properties(sym, prop, P_ENV) { | |
1292 | sym2 = prop_get_symbol(prop); | |
1293 | if (strcmp(sym2->name, env)) | |
1294 | menu_warn(current_entry, "redefining environment symbol from %s", | |
1295 | sym2->name); | |
1296 | return; | |
1297 | } | |
1298 | ||
1299 | prop = prop_alloc(P_ENV, sym); | |
5a1aa8a1 | 1300 | prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST)); |
93449082 RZ |
1301 | |
1302 | sym_env_list = expr_alloc_one(E_LIST, sym_env_list); | |
1303 | sym_env_list->right.sym = sym; | |
1304 | ||
1305 | p = getenv(env); | |
1306 | if (p) | |
1307 | sym_add_default(sym, p); | |
1308 | else | |
1309 | menu_warn(current_entry, "environment variable %s undefined", env); | |
1310 | } |