1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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 <xalloc.h>
15 #include "lkc.h"
16 #include "internal.h"
17 #include "preprocess.h"
18
19 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
20
21 #define PRINTD 0x0001
22 #define DEBUG_PARSE 0x0002
23
24 int cdebug = PRINTD;
25
26 static void yyerror(const char *err);
27 static void zconfprint(const char *err, ...);
28 static void zconf_error(const char *err, ...);
29 static bool zconf_endtoken(const char *tokenname,
30 const char *expected_tokenname);
31
32 struct menu *current_menu, *current_entry, *current_choice;
33
34 %}
35
36 %union
37 {
38 char *string;
39 struct symbol *symbol;
40 struct expr *expr;
41 struct menu *menu;
42 enum symbol_type type;
43 enum variable_flavor flavor;
44 }
45
46 %token <string> T_HELPTEXT
47 %token <string> T_WORD
48 %token <string> T_WORD_QUOTE
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_DEF_BOOL
57 %token T_DEF_TRISTATE
58 %token T_DEPENDS
59 %token T_ENDCHOICE
60 %token T_ENDIF
61 %token T_ENDMENU
62 %token T_HELP
63 %token T_HEX
64 %token T_IF
65 %token T_IMPLY
66 %token T_INT
67 %token T_MAINMENU
68 %token T_MENU
69 %token T_MENUCONFIG
70 %token T_MODULES
71 %token T_ON
72 %token T_OPEN_PAREN
73 %token T_PLUS_EQUAL
74 %token T_PROMPT
75 %token T_RANGE
76 %token T_SELECT
77 %token T_SOURCE
78 %token T_STRING
79 %token T_TRISTATE
80 %token T_VISIBLE
81 %token T_EOL
82 %token <string> T_ASSIGN_VAL
83
84 %left T_OR
85 %left T_AND
86 %left T_EQUAL T_UNEQUAL
87 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
88 %nonassoc T_NOT
89
90 %type <symbol> nonconst_symbol
91 %type <symbol> symbol
92 %type <type> type default
93 %type <expr> expr
94 %type <expr> if_expr
95 %type <string> end
96 %type <menu> if_entry menu_entry choice_entry
97 %type <string> assign_val
98 %type <flavor> assign_op
99
100 %destructor {
101 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
102 $$->filename, $$->lineno);
103 if (current_menu == $$)
104 menu_end_menu();
105 } if_entry menu_entry choice_entry
106
107 %%
108 input: mainmenu_stmt stmt_list | stmt_list;
109
110 /* mainmenu entry */
111
112 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
113 {
114 menu_add_prompt(P_MENU, $2, NULL);
115 };
116
117 stmt_list:
118 /* empty */
119 | stmt_list assignment_stmt
120 | stmt_list choice_stmt
121 | stmt_list comment_stmt
122 | stmt_list config_stmt
123 | stmt_list if_stmt
124 | stmt_list menu_stmt
125 | stmt_list menuconfig_stmt
126 | stmt_list source_stmt
127 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
128 | stmt_list error T_EOL { zconf_error("invalid statement"); }
129 ;
130
131 stmt_list_in_choice:
132 /* empty */
133 | stmt_list_in_choice comment_stmt
134 | stmt_list_in_choice config_stmt
135 | stmt_list_in_choice if_stmt_in_choice
136 | stmt_list_in_choice error T_EOL { zconf_error("invalid statement"); }
137 ;
138
139 /* config/menuconfig entry */
140
141 config_entry_start: T_CONFIG nonconst_symbol T_EOL
142 {
143 menu_add_entry($2);
144 printd(DEBUG_PARSE, "%s:%d:config %s\n", cur_filename, cur_lineno, $2->name);
145 };
146
147 config_stmt: config_entry_start config_option_list
148 {
149 if (current_choice) {
150 if (!current_entry->prompt) {
151 fprintf(stderr, "%s:%d: error: choice member must have a prompt\n",
152 current_entry->filename, current_entry->lineno);
153 yynerrs++;
154 }
155
156 if (current_entry->sym->type != S_BOOLEAN) {
157 fprintf(stderr, "%s:%d: error: choice member must be bool\n",
158 current_entry->filename, current_entry->lineno);
159 yynerrs++;
160 }
161
162 /*
163 * If the same symbol appears twice in a choice block, the list
164 * node would be added twice, leading to a broken linked list.
165 * list_empty() ensures that this symbol has not yet added.
166 */
167 if (list_empty(¤t_entry->sym->choice_link))
168 list_add_tail(¤t_entry->sym->choice_link,
169 ¤t_choice->choice_members);
170 }
171
172 printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno);
173 };
174
175 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
176 {
177 menu_add_entry($2);
178 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", cur_filename, cur_lineno, $2->name);
179 };
180
181 menuconfig_stmt: menuconfig_entry_start config_option_list
182 {
183 if (current_entry->prompt)
184 current_entry->prompt->type = P_MENU;
185 else
186 zconfprint("warning: menuconfig statement without prompt");
187 printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno);
188 };
189
190 config_option_list:
191 /* empty */
192 | config_option_list config_option
193 | config_option_list depends
194 | config_option_list help
195 ;
196
197 config_option: type prompt_stmt_opt T_EOL
198 {
199 menu_set_type($1);
200 printd(DEBUG_PARSE, "%s:%d:type(%u)\n", cur_filename, cur_lineno, $1);
201 };
202
203 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
204 {
205 menu_add_prompt(P_PROMPT, $2, $3);
206 printd(DEBUG_PARSE, "%s:%d:prompt\n", cur_filename, cur_lineno);
207 };
208
209 config_option: default expr if_expr T_EOL
210 {
211 menu_add_expr(P_DEFAULT, $2, $3);
212 if ($1 != S_UNKNOWN)
213 menu_set_type($1);
214 printd(DEBUG_PARSE, "%s:%d:default(%u)\n", cur_filename, cur_lineno,
215 $1);
216 };
217
218 config_option: T_SELECT nonconst_symbol if_expr T_EOL
219 {
220 menu_add_symbol(P_SELECT, $2, $3);
221 printd(DEBUG_PARSE, "%s:%d:select\n", cur_filename, cur_lineno);
222 };
223
224 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
225 {
226 menu_add_symbol(P_IMPLY, $2, $3);
227 printd(DEBUG_PARSE, "%s:%d:imply\n", cur_filename, cur_lineno);
228 };
229
230 config_option: T_RANGE symbol symbol if_expr T_EOL
231 {
232 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
233 printd(DEBUG_PARSE, "%s:%d:range\n", cur_filename, cur_lineno);
234 };
235
236 config_option: T_MODULES T_EOL
237 {
238 if (modules_sym)
239 zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'",
240 current_entry->sym->name, modules_sym->name);
241 modules_sym = current_entry->sym;
242 };
243
244 /* choice entry */
245
246 choice: T_CHOICE T_EOL
247 {
248 struct symbol *sym = sym_lookup(NULL, 0);
249
250 menu_add_entry(sym);
251 menu_set_type(S_BOOLEAN);
252 INIT_LIST_HEAD(¤t_entry->choice_members);
253
254 printd(DEBUG_PARSE, "%s:%d:choice\n", cur_filename, cur_lineno);
255 };
256
257 choice_entry: choice choice_option_list
258 {
259 if (!current_entry->prompt) {
260 fprintf(stderr, "%s:%d: error: choice must have a prompt\n",
261 current_entry->filename, current_entry->lineno);
262 yynerrs++;
263 }
264
265 $$ = menu_add_menu();
266
267 current_choice = current_entry;
268 };
269
270 choice_end: end
271 {
272 current_choice = NULL;
273
274 if (zconf_endtoken($1, "choice")) {
275 menu_end_menu();
276 printd(DEBUG_PARSE, "%s:%d:endchoice\n", cur_filename, cur_lineno);
277 }
278 };
279
280 choice_stmt: choice_entry stmt_list_in_choice choice_end
281 ;
282
283 choice_option_list:
284 /* empty */
285 | choice_option_list choice_option
286 | choice_option_list depends
287 | choice_option_list help
288 ;
289
290 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
291 {
292 menu_add_prompt(P_PROMPT, $2, $3);
293 printd(DEBUG_PARSE, "%s:%d:prompt\n", cur_filename, cur_lineno);
294 };
295
296 choice_option: T_BOOL T_WORD_QUOTE if_expr T_EOL
297 {
298 menu_add_prompt(P_PROMPT, $2, $3);
299 printd(DEBUG_PARSE, "%s:%d:bool\n", cur_filename, cur_lineno);
300 };
301
302 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
303 {
304 menu_add_symbol(P_DEFAULT, $2, $3);
305 printd(DEBUG_PARSE, "%s:%d:default\n", cur_filename, cur_lineno);
306 };
307
308 type:
309 T_BOOL { $$ = S_BOOLEAN; }
310 | T_TRISTATE { $$ = S_TRISTATE; }
311 | T_INT { $$ = S_INT; }
312 | T_HEX { $$ = S_HEX; }
313 | T_STRING { $$ = S_STRING; }
314
315 default:
316 T_DEFAULT { $$ = S_UNKNOWN; }
317 | T_DEF_BOOL { $$ = S_BOOLEAN; }
318 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
319
320 /* if entry */
321
322 if_entry: T_IF expr T_EOL
323 {
324 printd(DEBUG_PARSE, "%s:%d:if\n", cur_filename, cur_lineno);
325 menu_add_entry(NULL);
326 menu_add_dep($2);
327 $$ = menu_add_menu();
328 };
329
330 if_end: end
331 {
332 if (zconf_endtoken($1, "if")) {
333 menu_end_menu();
334 printd(DEBUG_PARSE, "%s:%d:endif\n", cur_filename, cur_lineno);
335 }
336 };
337
338 if_stmt: if_entry stmt_list if_end
339 ;
340
341 if_stmt_in_choice: if_entry stmt_list_in_choice if_end
342 ;
343
344 /* menu entry */
345
346 menu: T_MENU T_WORD_QUOTE T_EOL
347 {
348 menu_add_entry(NULL);
349 menu_add_prompt(P_MENU, $2, NULL);
350 printd(DEBUG_PARSE, "%s:%d:menu\n", cur_filename, cur_lineno);
351 };
352
353 menu_entry: menu menu_option_list
354 {
355 $$ = menu_add_menu();
356 };
357
358 menu_end: end
359 {
360 if (zconf_endtoken($1, "menu")) {
361 menu_end_menu();
362 printd(DEBUG_PARSE, "%s:%d:endmenu\n", cur_filename, cur_lineno);
363 }
364 };
365
366 menu_stmt: menu_entry stmt_list menu_end
367 ;
368
369 menu_option_list:
370 /* empty */
371 | menu_option_list visible
372 | menu_option_list depends
373 ;
374
375 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
376 {
377 printd(DEBUG_PARSE, "%s:%d:source %s\n", cur_filename, cur_lineno, $2);
378 zconf_nextfile($2);
379 free($2);
380 };
381
382 /* comment entry */
383
384 comment: T_COMMENT T_WORD_QUOTE T_EOL
385 {
386 menu_add_entry(NULL);
387 menu_add_prompt(P_COMMENT, $2, NULL);
388 printd(DEBUG_PARSE, "%s:%d:comment\n", cur_filename, cur_lineno);
389 };
390
391 comment_stmt: comment comment_option_list
392 ;
393
394 comment_option_list:
395 /* empty */
396 | comment_option_list depends
397 ;
398
399 /* help option */
400
401 help_start: T_HELP T_EOL
402 {
403 printd(DEBUG_PARSE, "%s:%d:help\n", cur_filename, cur_lineno);
404 zconf_starthelp();
405 };
406
407 help: help_start T_HELPTEXT
408 {
409 if (current_entry->help) {
410 free(current_entry->help);
411 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
412 current_entry->sym->name ?: "<choice>");
413 }
414
415 /* Is the help text empty or all whitespace? */
416 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
417 zconfprint("warning: '%s' defined with blank help text",
418 current_entry->sym->name ?: "<choice>");
419
420 current_entry->help = $2;
421 };
422
423 /* depends option */
424
425 depends: T_DEPENDS T_ON expr T_EOL
426 {
427 menu_add_dep($3);
428 printd(DEBUG_PARSE, "%s:%d:depends on\n", cur_filename, cur_lineno);
429 };
430
431 /* visibility option */
432 visible: T_VISIBLE if_expr T_EOL
433 {
434 menu_add_visibility($2);
435 };
436
437 /* prompt statement */
438
439 prompt_stmt_opt:
440 /* empty */
441 | T_WORD_QUOTE if_expr
442 {
443 menu_add_prompt(P_PROMPT, $1, $2);
444 };
445
446 end: T_ENDMENU T_EOL { $$ = "menu"; }
447 | T_ENDCHOICE T_EOL { $$ = "choice"; }
448 | T_ENDIF T_EOL { $$ = "if"; }
449 ;
450
451 if_expr: /* empty */ { $$ = NULL; }
452 | T_IF expr { $$ = $2; }
453 ;
454
455 expr: symbol { $$ = expr_alloc_symbol($1); }
456 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
457 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
458 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
459 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
460 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
461 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
462 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
463 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
464 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
465 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
466 ;
467
468 /* For symbol definitions, selects, etc., where quotes are not accepted */
469 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
470
471 symbol: nonconst_symbol
472 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
473 ;
474
475 /* assignment statement */
476
477 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
478
479 assign_op:
480 T_EQUAL { $$ = VAR_RECURSIVE; }
481 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
482 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
483 ;
484
485 assign_val:
486 /* empty */ { $$ = xstrdup(""); };
487 | T_ASSIGN_VAL
488 ;
489
490 %%
491
492 /**
493 * choice_check_sanity - check sanity of a choice member
494 *
495 * @menu: menu of the choice member
496 *
497 * Return: -1 if an error is found, 0 otherwise.
498 */
499 static int choice_check_sanity(const struct menu *menu)
500 {
501 struct property *prop;
502 int ret = 0;
503
504 for (prop = menu->sym->prop; prop; prop = prop->next) {
505 if (prop->type == P_DEFAULT) {
506 fprintf(stderr, "%s:%d: error: %s",
507 prop->filename, prop->lineno,
508 "defaults for choice values not supported\n");
509 ret = -1;
510 }
511
512 if (prop->menu != menu && prop->type == P_PROMPT &&
513 prop->menu->parent != menu->parent) {
514 fprintf(stderr, "%s:%d: error: %s",
515 prop->filename, prop->lineno,
516 "choice value has a prompt outside its choice group\n");
517 ret = -1;
518 }
519 }
520
521 return ret;
522 }
523
conf_parse(const char * name)524 void conf_parse(const char *name)
525 {
526 struct menu *menu;
527
528 autoconf_cmd = str_new();
529
530 str_printf(&autoconf_cmd, "\ndeps_config := \\\n");
531
532 zconf_initscan(name);
533
534 _menu_init();
535
536 if (getenv("ZCONF_DEBUG"))
537 yydebug = 1;
538 yyparse();
539
540 str_printf(&autoconf_cmd,
541 "\n"
542 "$(autoconfig): $(deps_config)\n"
543 "$(deps_config): ;\n");
544
545 env_write_dep(&autoconf_cmd);
546
547 /* Variables are expanded in the parse phase. We can free them here. */
548 variable_all_del();
549
550 if (yynerrs)
551 exit(1);
552 if (!modules_sym)
553 modules_sym = &symbol_no;
554
555 if (!menu_has_prompt(&rootmenu)) {
556 current_entry = &rootmenu;
557 menu_add_prompt(P_MENU, "Main menu", NULL);
558 }
559
560 menu_finalize();
561
562 menu_for_each_entry(menu) {
563 struct menu *child;
564
565 if (menu->sym && sym_check_deps(menu->sym))
566 yynerrs++;
567
568 if (menu->sym && sym_is_choice(menu->sym)) {
569 menu_for_each_sub_entry(child, menu)
570 if (child->sym && choice_check_sanity(child))
571 yynerrs++;
572 }
573 }
574
575 if (yynerrs)
576 exit(1);
577 conf_set_changed(true);
578 }
579
zconf_endtoken(const char * tokenname,const char * expected_tokenname)580 static bool zconf_endtoken(const char *tokenname,
581 const char *expected_tokenname)
582 {
583 if (strcmp(tokenname, expected_tokenname)) {
584 zconf_error("unexpected '%s' within %s block",
585 tokenname, expected_tokenname);
586 yynerrs++;
587 return false;
588 }
589 if (strcmp(current_menu->filename, cur_filename)) {
590 zconf_error("'%s' in different file than '%s'",
591 tokenname, expected_tokenname);
592 fprintf(stderr, "%s:%d: location of the '%s'\n",
593 current_menu->filename, current_menu->lineno,
594 expected_tokenname);
595 yynerrs++;
596 return false;
597 }
598 return true;
599 }
600
zconfprint(const char * err,...)601 static void zconfprint(const char *err, ...)
602 {
603 va_list ap;
604
605 fprintf(stderr, "%s:%d: ", cur_filename, cur_lineno);
606 va_start(ap, err);
607 vfprintf(stderr, err, ap);
608 va_end(ap);
609 fprintf(stderr, "\n");
610 }
611
zconf_error(const char * err,...)612 static void zconf_error(const char *err, ...)
613 {
614 va_list ap;
615
616 yynerrs++;
617 fprintf(stderr, "%s:%d: ", cur_filename, cur_lineno);
618 va_start(ap, err);
619 vfprintf(stderr, err, ap);
620 va_end(ap);
621 fprintf(stderr, "\n");
622 }
623
yyerror(const char * err)624 static void yyerror(const char *err)
625 {
626 fprintf(stderr, "%s:%d: %s\n", cur_filename, cur_lineno, err);
627 }
628
print_quoted_string(FILE * out,const char * str)629 static void print_quoted_string(FILE *out, const char *str)
630 {
631 const char *p;
632 int len;
633
634 putc('"', out);
635 while ((p = strchr(str, '"'))) {
636 len = p - str;
637 if (len)
638 fprintf(out, "%.*s", len, str);
639 fputs("\\\"", out);
640 str = p + 1;
641 }
642 fputs(str, out);
643 putc('"', out);
644 }
645
print_symbol(FILE * out,const struct menu * menu)646 static void print_symbol(FILE *out, const struct menu *menu)
647 {
648 struct symbol *sym = menu->sym;
649 struct property *prop;
650
651 if (sym_is_choice(sym))
652 fprintf(out, "\nchoice\n");
653 else
654 fprintf(out, "\nconfig %s\n", sym->name);
655 switch (sym->type) {
656 case S_BOOLEAN:
657 fputs(" bool\n", out);
658 break;
659 case S_TRISTATE:
660 fputs(" tristate\n", out);
661 break;
662 case S_STRING:
663 fputs(" string\n", out);
664 break;
665 case S_INT:
666 fputs(" integer\n", out);
667 break;
668 case S_HEX:
669 fputs(" hex\n", out);
670 break;
671 default:
672 fputs(" ???\n", out);
673 break;
674 }
675 for (prop = sym->prop; prop; prop = prop->next) {
676 if (prop->menu != menu)
677 continue;
678 switch (prop->type) {
679 case P_PROMPT:
680 fputs(" prompt ", out);
681 print_quoted_string(out, prop->text);
682 if (!expr_is_yes(prop->visible.expr)) {
683 fputs(" if ", out);
684 expr_fprint(prop->visible.expr, out);
685 }
686 fputc('\n', out);
687 break;
688 case P_DEFAULT:
689 fputs( " default ", out);
690 expr_fprint(prop->expr, out);
691 if (!expr_is_yes(prop->visible.expr)) {
692 fputs(" if ", out);
693 expr_fprint(prop->visible.expr, out);
694 }
695 fputc('\n', out);
696 break;
697 case P_SELECT:
698 fputs( " select ", out);
699 expr_fprint(prop->expr, out);
700 fputc('\n', out);
701 break;
702 case P_IMPLY:
703 fputs( " imply ", out);
704 expr_fprint(prop->expr, out);
705 fputc('\n', out);
706 break;
707 case P_RANGE:
708 fputs( " range ", out);
709 expr_fprint(prop->expr, out);
710 fputc('\n', out);
711 break;
712 case P_MENU:
713 fputs( " menu ", out);
714 print_quoted_string(out, prop->text);
715 fputc('\n', out);
716 break;
717 default:
718 fprintf(out, " unknown prop %d!\n", prop->type);
719 break;
720 }
721 }
722 if (menu->help) {
723 int len = strlen(menu->help);
724 while (menu->help[--len] == '\n')
725 menu->help[len] = 0;
726 fprintf(out, " help\n%s\n", menu->help);
727 }
728 }
729
zconfdump(FILE * out)730 void zconfdump(FILE *out)
731 {
732 struct property *prop;
733 struct symbol *sym;
734 struct menu *menu;
735
736 menu = rootmenu.list;
737 while (menu) {
738 if ((sym = menu->sym))
739 print_symbol(out, menu);
740 else if ((prop = menu->prompt)) {
741 switch (prop->type) {
742 case P_COMMENT:
743 fputs("\ncomment ", out);
744 print_quoted_string(out, prop->text);
745 fputs("\n", out);
746 break;
747 case P_MENU:
748 fputs("\nmenu ", out);
749 print_quoted_string(out, prop->text);
750 fputs("\n", out);
751 break;
752 default:
753 ;
754 }
755 if (!expr_is_yes(prop->visible.expr)) {
756 fputs(" depends ", out);
757 expr_fprint(prop->visible.expr, out);
758 fputc('\n', out);
759 }
760 }
761
762 if (menu->list)
763 menu = menu->list;
764 else if (menu->next)
765 menu = menu->next;
766 else while ((menu = menu->parent)) {
767 if (menu->prompt && menu->prompt->type == P_MENU)
768 fputs("\nendmenu\n", out);
769 if (menu->next) {
770 menu = menu->next;
771 break;
772 }
773 }
774 }
775 }
776