This source file includes following definitions.
- conf_parse
- zconf_endtoken
- zconfprint
- zconf_error
- yyerror
- print_quoted_string
- print_symbol
- zconfdump
1
2
3
4
5 %{
6
7 #include <ctype.h>
8 #include <stdarg.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <stdbool.h>
13
14 #include "lkc.h"
15
16 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
17
18 #define PRINTD 0x0001
19 #define DEBUG_PARSE 0x0002
20
21 int cdebug = PRINTD;
22
23 static void yyerror(const char *err);
24 static void zconfprint(const char *err, ...);
25 static void zconf_error(const char *err, ...);
26 static bool zconf_endtoken(const char *tokenname,
27 const char *expected_tokenname);
28
29 struct symbol *symbol_hash[SYMBOL_HASHSIZE];
30
31 static struct menu *current_menu, *current_entry;
32
33 %}
34
35 %union
36 {
37 char *string;
38 struct symbol *symbol;
39 struct expr *expr;
40 struct menu *menu;
41 enum symbol_type type;
42 enum variable_flavor flavor;
43 }
44
45 %token <string> T_HELPTEXT
46 %token <string> T_WORD
47 %token <string> T_WORD_QUOTE
48 %token T_ALLNOCONFIG_Y
49 %token T_BOOL
50 %token T_CHOICE
51 %token T_CLOSE_PAREN
52 %token T_COLON_EQUAL
53 %token T_COMMENT
54 %token T_CONFIG
55 %token T_DEFAULT
56 %token T_DEFCONFIG_LIST
57 %token T_DEF_BOOL
58 %token T_DEF_TRISTATE
59 %token T_DEPENDS
60 %token T_ENDCHOICE
61 %token T_ENDIF
62 %token T_ENDMENU
63 %token T_HELP
64 %token T_HEX
65 %token T_IF
66 %token T_IMPLY
67 %token T_INT
68 %token T_MAINMENU
69 %token T_MENU
70 %token T_MENUCONFIG
71 %token T_MODULES
72 %token T_ON
73 %token T_OPEN_PAREN
74 %token T_OPTION
75 %token T_OPTIONAL
76 %token T_PLUS_EQUAL
77 %token T_PROMPT
78 %token T_RANGE
79 %token T_SELECT
80 %token T_SOURCE
81 %token T_STRING
82 %token T_TRISTATE
83 %token T_VISIBLE
84 %token T_EOL
85 %token <string> T_ASSIGN_VAL
86
87 %left T_OR
88 %left T_AND
89 %left T_EQUAL T_UNEQUAL
90 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
91 %nonassoc T_NOT
92
93 %type <string> prompt
94 %type <symbol> nonconst_symbol
95 %type <symbol> symbol
96 %type <type> type logic_type default
97 %type <expr> expr
98 %type <expr> if_expr
99 %type <string> end
100 %type <menu> if_entry menu_entry choice_entry
101 %type <string> word_opt assign_val
102 %type <flavor> assign_op
103
104 %destructor {
105 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
106 $$->file->name, $$->lineno);
107 if (current_menu == $$)
108 menu_end_menu();
109 } if_entry menu_entry choice_entry
110
111 %%
112 input: mainmenu_stmt stmt_list | stmt_list;
113
114
115
116 mainmenu_stmt: T_MAINMENU prompt T_EOL
117 {
118 menu_add_prompt(P_MENU, $2, NULL);
119 };
120
121 stmt_list:
122
123 | stmt_list common_stmt
124 | stmt_list choice_stmt
125 | stmt_list menu_stmt
126 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
127 | stmt_list error T_EOL { zconf_error("invalid statement"); }
128 ;
129
130 common_stmt:
131 if_stmt
132 | comment_stmt
133 | config_stmt
134 | menuconfig_stmt
135 | source_stmt
136 | assignment_stmt
137 ;
138
139
140
141 config_entry_start: T_CONFIG nonconst_symbol T_EOL
142 {
143 $2->flags |= SYMBOL_OPTIONAL;
144 menu_add_entry($2);
145 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
146 };
147
148 config_stmt: config_entry_start config_option_list
149 {
150 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
151 };
152
153 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
154 {
155 $2->flags |= SYMBOL_OPTIONAL;
156 menu_add_entry($2);
157 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
158 };
159
160 menuconfig_stmt: menuconfig_entry_start config_option_list
161 {
162 if (current_entry->prompt)
163 current_entry->prompt->type = P_MENU;
164 else
165 zconfprint("warning: menuconfig statement without prompt");
166 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
167 };
168
169 config_option_list:
170
171 | config_option_list config_option
172 | config_option_list depends
173 | config_option_list help
174 ;
175
176 config_option: type prompt_stmt_opt T_EOL
177 {
178 menu_set_type($1);
179 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
180 zconf_curname(), zconf_lineno(),
181 $1);
182 };
183
184 config_option: T_PROMPT prompt if_expr T_EOL
185 {
186 menu_add_prompt(P_PROMPT, $2, $3);
187 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
188 };
189
190 config_option: default expr if_expr T_EOL
191 {
192 menu_add_expr(P_DEFAULT, $2, $3);
193 if ($1 != S_UNKNOWN)
194 menu_set_type($1);
195 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
196 zconf_curname(), zconf_lineno(),
197 $1);
198 };
199
200 config_option: T_SELECT nonconst_symbol if_expr T_EOL
201 {
202 menu_add_symbol(P_SELECT, $2, $3);
203 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
204 };
205
206 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
207 {
208 menu_add_symbol(P_IMPLY, $2, $3);
209 printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
210 };
211
212 config_option: T_RANGE symbol symbol if_expr T_EOL
213 {
214 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
215 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
216 };
217
218 config_option: T_OPTION T_MODULES T_EOL
219 {
220 menu_add_option_modules();
221 };
222
223 config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
224 {
225 menu_add_option_defconfig_list();
226 };
227
228 config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
229 {
230 menu_add_option_allnoconfig_y();
231 };
232
233
234
235 choice: T_CHOICE word_opt T_EOL
236 {
237 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
238 sym->flags |= SYMBOL_NO_WRITE;
239 menu_add_entry(sym);
240 menu_add_expr(P_CHOICE, NULL, NULL);
241 free($2);
242 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
243 };
244
245 choice_entry: choice choice_option_list
246 {
247 $$ = menu_add_menu();
248 };
249
250 choice_end: end
251 {
252 if (zconf_endtoken($1, "choice")) {
253 menu_end_menu();
254 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
255 }
256 };
257
258 choice_stmt: choice_entry choice_block choice_end
259 ;
260
261 choice_option_list:
262
263 | choice_option_list choice_option
264 | choice_option_list depends
265 | choice_option_list help
266 ;
267
268 choice_option: T_PROMPT prompt if_expr T_EOL
269 {
270 menu_add_prompt(P_PROMPT, $2, $3);
271 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
272 };
273
274 choice_option: logic_type prompt_stmt_opt T_EOL
275 {
276 menu_set_type($1);
277 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
278 zconf_curname(), zconf_lineno(), $1);
279 };
280
281 choice_option: T_OPTIONAL T_EOL
282 {
283 current_entry->sym->flags |= SYMBOL_OPTIONAL;
284 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
285 };
286
287 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
288 {
289 menu_add_symbol(P_DEFAULT, $2, $3);
290 printd(DEBUG_PARSE, "%s:%d:default\n",
291 zconf_curname(), zconf_lineno());
292 };
293
294 type:
295 logic_type
296 | T_INT { $$ = S_INT; }
297 | T_HEX { $$ = S_HEX; }
298 | T_STRING { $$ = S_STRING; }
299
300 logic_type:
301 T_BOOL { $$ = S_BOOLEAN; }
302 | T_TRISTATE { $$ = S_TRISTATE; }
303
304 default:
305 T_DEFAULT { $$ = S_UNKNOWN; }
306 | T_DEF_BOOL { $$ = S_BOOLEAN; }
307 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
308
309 choice_block:
310
311 | choice_block common_stmt
312 ;
313
314
315
316 if_entry: T_IF expr T_EOL
317 {
318 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
319 menu_add_entry(NULL);
320 menu_add_dep($2);
321 $$ = menu_add_menu();
322 };
323
324 if_end: end
325 {
326 if (zconf_endtoken($1, "if")) {
327 menu_end_menu();
328 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
329 }
330 };
331
332 if_stmt: if_entry stmt_list if_end
333 ;
334
335
336
337 menu: T_MENU prompt T_EOL
338 {
339 menu_add_entry(NULL);
340 menu_add_prompt(P_MENU, $2, NULL);
341 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
342 };
343
344 menu_entry: menu menu_option_list
345 {
346 $$ = menu_add_menu();
347 };
348
349 menu_end: end
350 {
351 if (zconf_endtoken($1, "menu")) {
352 menu_end_menu();
353 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
354 }
355 };
356
357 menu_stmt: menu_entry stmt_list menu_end
358 ;
359
360 menu_option_list:
361
362 | menu_option_list visible
363 | menu_option_list depends
364 ;
365
366 source_stmt: T_SOURCE prompt T_EOL
367 {
368 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
369 zconf_nextfile($2);
370 free($2);
371 };
372
373
374
375 comment: T_COMMENT prompt T_EOL
376 {
377 menu_add_entry(NULL);
378 menu_add_prompt(P_COMMENT, $2, NULL);
379 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
380 };
381
382 comment_stmt: comment comment_option_list
383 ;
384
385 comment_option_list:
386
387 | comment_option_list depends
388 ;
389
390
391
392 help_start: T_HELP T_EOL
393 {
394 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
395 zconf_starthelp();
396 };
397
398 help: help_start T_HELPTEXT
399 {
400 if (current_entry->help) {
401 free(current_entry->help);
402 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
403 current_entry->sym->name ?: "<choice>");
404 }
405
406
407 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
408 zconfprint("warning: '%s' defined with blank help text",
409 current_entry->sym->name ?: "<choice>");
410
411 current_entry->help = $2;
412 };
413
414
415
416 depends: T_DEPENDS T_ON expr T_EOL
417 {
418 menu_add_dep($3);
419 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
420 };
421
422
423 visible: T_VISIBLE if_expr T_EOL
424 {
425 menu_add_visibility($2);
426 };
427
428
429
430 prompt_stmt_opt:
431
432 | prompt if_expr
433 {
434 menu_add_prompt(P_PROMPT, $1, $2);
435 };
436
437 prompt: T_WORD
438 | T_WORD_QUOTE
439 ;
440
441 end: T_ENDMENU T_EOL { $$ = "menu"; }
442 | T_ENDCHOICE T_EOL { $$ = "choice"; }
443 | T_ENDIF T_EOL { $$ = "if"; }
444 ;
445
446 if_expr: { $$ = NULL; }
447 | T_IF expr { $$ = $2; }
448 ;
449
450 expr: symbol { $$ = expr_alloc_symbol($1); }
451 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
452 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
453 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
454 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
455 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
456 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
457 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
458 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
459 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
460 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
461 ;
462
463
464 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
465
466 symbol: nonconst_symbol
467 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
468 ;
469
470 word_opt: { $$ = NULL; }
471 | T_WORD
472
473
474
475 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
476
477 assign_op:
478 T_EQUAL { $$ = VAR_RECURSIVE; }
479 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
480 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
481 ;
482
483 assign_val:
484 { $$ = xstrdup(""); };
485 | T_ASSIGN_VAL
486 ;
487
488 %%
489
490 void conf_parse(const char *name)
491 {
492 struct symbol *sym;
493 int i;
494
495 zconf_initscan(name);
496
497 _menu_init();
498
499 if (getenv("ZCONF_DEBUG"))
500 yydebug = 1;
501 yyparse();
502
503
504 variable_all_del();
505
506 if (yynerrs)
507 exit(1);
508 if (!modules_sym)
509 modules_sym = sym_find( "n" );
510
511 if (!menu_has_prompt(&rootmenu)) {
512 current_entry = &rootmenu;
513 menu_add_prompt(P_MENU, "Main menu", NULL);
514 }
515
516 menu_finalize(&rootmenu);
517 for_all_symbols(i, sym) {
518 if (sym_check_deps(sym))
519 yynerrs++;
520 }
521 if (yynerrs)
522 exit(1);
523 sym_set_change_count(1);
524 }
525
526 static bool zconf_endtoken(const char *tokenname,
527 const char *expected_tokenname)
528 {
529 if (strcmp(tokenname, expected_tokenname)) {
530 zconf_error("unexpected '%s' within %s block",
531 tokenname, expected_tokenname);
532 yynerrs++;
533 return false;
534 }
535 if (current_menu->file != current_file) {
536 zconf_error("'%s' in different file than '%s'",
537 tokenname, expected_tokenname);
538 fprintf(stderr, "%s:%d: location of the '%s'\n",
539 current_menu->file->name, current_menu->lineno,
540 expected_tokenname);
541 yynerrs++;
542 return false;
543 }
544 return true;
545 }
546
547 static void zconfprint(const char *err, ...)
548 {
549 va_list ap;
550
551 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
552 va_start(ap, err);
553 vfprintf(stderr, err, ap);
554 va_end(ap);
555 fprintf(stderr, "\n");
556 }
557
558 static void zconf_error(const char *err, ...)
559 {
560 va_list ap;
561
562 yynerrs++;
563 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
564 va_start(ap, err);
565 vfprintf(stderr, err, ap);
566 va_end(ap);
567 fprintf(stderr, "\n");
568 }
569
570 static void yyerror(const char *err)
571 {
572 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
573 }
574
575 static void print_quoted_string(FILE *out, const char *str)
576 {
577 const char *p;
578 int len;
579
580 putc('"', out);
581 while ((p = strchr(str, '"'))) {
582 len = p - str;
583 if (len)
584 fprintf(out, "%.*s", len, str);
585 fputs("\\\"", out);
586 str = p + 1;
587 }
588 fputs(str, out);
589 putc('"', out);
590 }
591
592 static void print_symbol(FILE *out, struct menu *menu)
593 {
594 struct symbol *sym = menu->sym;
595 struct property *prop;
596
597 if (sym_is_choice(sym))
598 fprintf(out, "\nchoice\n");
599 else
600 fprintf(out, "\nconfig %s\n", sym->name);
601 switch (sym->type) {
602 case S_BOOLEAN:
603 fputs(" bool\n", out);
604 break;
605 case S_TRISTATE:
606 fputs(" tristate\n", out);
607 break;
608 case S_STRING:
609 fputs(" string\n", out);
610 break;
611 case S_INT:
612 fputs(" integer\n", out);
613 break;
614 case S_HEX:
615 fputs(" hex\n", out);
616 break;
617 default:
618 fputs(" ???\n", out);
619 break;
620 }
621 for (prop = sym->prop; prop; prop = prop->next) {
622 if (prop->menu != menu)
623 continue;
624 switch (prop->type) {
625 case P_PROMPT:
626 fputs(" prompt ", out);
627 print_quoted_string(out, prop->text);
628 if (!expr_is_yes(prop->visible.expr)) {
629 fputs(" if ", out);
630 expr_fprint(prop->visible.expr, out);
631 }
632 fputc('\n', out);
633 break;
634 case P_DEFAULT:
635 fputs( " default ", out);
636 expr_fprint(prop->expr, out);
637 if (!expr_is_yes(prop->visible.expr)) {
638 fputs(" if ", out);
639 expr_fprint(prop->visible.expr, out);
640 }
641 fputc('\n', out);
642 break;
643 case P_CHOICE:
644 fputs(" #choice value\n", out);
645 break;
646 case P_SELECT:
647 fputs( " select ", out);
648 expr_fprint(prop->expr, out);
649 fputc('\n', out);
650 break;
651 case P_IMPLY:
652 fputs( " imply ", out);
653 expr_fprint(prop->expr, out);
654 fputc('\n', out);
655 break;
656 case P_RANGE:
657 fputs( " range ", out);
658 expr_fprint(prop->expr, out);
659 fputc('\n', out);
660 break;
661 case P_MENU:
662 fputs( " menu ", out);
663 print_quoted_string(out, prop->text);
664 fputc('\n', out);
665 break;
666 case P_SYMBOL:
667 fputs( " symbol ", out);
668 fprintf(out, "%s\n", prop->sym->name);
669 break;
670 default:
671 fprintf(out, " unknown prop %d!\n", prop->type);
672 break;
673 }
674 }
675 if (menu->help) {
676 int len = strlen(menu->help);
677 while (menu->help[--len] == '\n')
678 menu->help[len] = 0;
679 fprintf(out, " help\n%s\n", menu->help);
680 }
681 }
682
683 void zconfdump(FILE *out)
684 {
685 struct property *prop;
686 struct symbol *sym;
687 struct menu *menu;
688
689 menu = rootmenu.list;
690 while (menu) {
691 if ((sym = menu->sym))
692 print_symbol(out, menu);
693 else if ((prop = menu->prompt)) {
694 switch (prop->type) {
695 case P_COMMENT:
696 fputs("\ncomment ", out);
697 print_quoted_string(out, prop->text);
698 fputs("\n", out);
699 break;
700 case P_MENU:
701 fputs("\nmenu ", out);
702 print_quoted_string(out, prop->text);
703 fputs("\n", out);
704 break;
705 default:
706 ;
707 }
708 if (!expr_is_yes(prop->visible.expr)) {
709 fputs(" depends ", out);
710 expr_fprint(prop->visible.expr, out);
711 fputc('\n', out);
712 }
713 }
714
715 if (menu->list)
716 menu = menu->list;
717 else if (menu->next)
718 menu = menu->next;
719 else while ((menu = menu->parent)) {
720 if (menu->prompt && menu->prompt->type == P_MENU)
721 fputs("\nendmenu\n", out);
722 if (menu->next) {
723 menu = menu->next;
724 break;
725 }
726 }
727 }
728 }
729
730 #include "util.c"
731 #include "menu.c"