1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2002 Roman Zippel <[email protected]> 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 #include "internal.h" 16 #include "preprocess.h" 17 18 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt) 19 20 #define PRINTD 0x0001 21 #define DEBUG_PARSE 0x0002 22 23 int cdebug = PRINTD; 24 25 static void yyerror(const char *err); 26 static void zconfprint(const char *err, ...); 27 static void zconf_error(const char *err, ...); 28 static bool zconf_endtoken(const char *tokenname, 29 const char *expected_tokenname); 30 31 struct menu *current_menu, *current_entry, *current_choice; 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_BOOL 49 %token T_CHOICE 50 %token T_CLOSE_PAREN 51 %token T_COLON_EQUAL 52 %token T_COMMENT 53 %token T_CONFIG 54 %token T_DEFAULT 55 %token T_DEF_BOOL 56 %token T_DEF_TRISTATE 57 %token T_DEPENDS 58 %token T_ENDCHOICE 59 %token T_ENDIF 60 %token T_ENDMENU 61 %token T_HELP 62 %token T_HEX 63 %token T_IF 64 %token T_IMPLY 65 %token T_INT 66 %token T_MAINMENU 67 %token T_MENU 68 %token T_MENUCONFIG 69 %token T_MODULES 70 %token T_ON 71 %token T_OPEN_PAREN 72 %token T_PLUS_EQUAL 73 %token T_PROMPT 74 %token T_RANGE 75 %token T_SELECT 76 %token T_SOURCE 77 %token T_STRING 78 %token T_TRISTATE 79 %token T_VISIBLE 80 %token T_EOL 81 %token <string> T_ASSIGN_VAL 82 83 %left T_OR 84 %left T_AND 85 %left T_EQUAL T_UNEQUAL 86 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL 87 %nonassoc T_NOT 88 89 %type <symbol> nonconst_symbol 90 %type <symbol> symbol 91 %type <type> type default 92 %type <expr> expr 93 %type <expr> if_expr 94 %type <string> end 95 %type <menu> if_entry menu_entry choice_entry 96 %type <string> assign_val 97 %type <flavor> assign_op 98 99 %destructor { 100 fprintf(stderr, "%s:%d: missing end statement for this entry\n", 101 $$->filename, $$->lineno); 102 if (current_menu == $$) 103 menu_end_menu(); 104 } if_entry menu_entry choice_entry 105 106 %% 107 input: mainmenu_stmt stmt_list | stmt_list; 108 109 /* mainmenu entry */ 110 111 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL 112 { 113 menu_add_prompt(P_MENU, $2, NULL); 114 }; 115 116 stmt_list: 117 /* empty */ 118 | stmt_list assignment_stmt 119 | stmt_list choice_stmt 120 | stmt_list comment_stmt 121 | stmt_list config_stmt 122 | stmt_list if_stmt 123 | stmt_list menu_stmt 124 | stmt_list menuconfig_stmt 125 | stmt_list source_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 stmt_list_in_choice: 131 /* empty */ 132 | stmt_list_in_choice comment_stmt 133 | stmt_list_in_choice config_stmt 134 | stmt_list_in_choice if_stmt_in_choice 135 | stmt_list_in_choice error T_EOL { zconf_error("invalid statement"); } 136 ; 137 138 /* config/menuconfig entry */ 139 140 config_entry_start: T_CONFIG nonconst_symbol T_EOL 141 { 142 menu_add_entry($2); 143 printd(DEBUG_PARSE, "%s:%d:config %s\n", cur_filename, cur_lineno, $2->name); 144 }; 145 146 config_stmt: config_entry_start config_option_list 147 { 148 if (current_choice) { 149 if (!current_entry->prompt) { 150 fprintf(stderr, "%s:%d: error: choice member must have a prompt\n", 151 current_entry->filename, current_entry->lineno); 152 yynerrs++; 153 } 154 155 if (current_entry->sym->type != S_BOOLEAN) { 156 fprintf(stderr, "%s:%d: error: choice member must be bool\n", 157 current_entry->filename, current_entry->lineno); 158 yynerrs++; 159 } 160 161 list_add_tail(¤t_entry->sym->choice_link, 162 ¤t_choice->choice_members); 163 } 164 165 printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno); 166 }; 167 168 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL 169 { 170 menu_add_entry($2); 171 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", cur_filename, cur_lineno, $2->name); 172 }; 173 174 menuconfig_stmt: menuconfig_entry_start config_option_list 175 { 176 if (current_entry->prompt) 177 current_entry->prompt->type = P_MENU; 178 else 179 zconfprint("warning: menuconfig statement without prompt"); 180 printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno); 181 }; 182 183 config_option_list: 184 /* empty */ 185 | config_option_list config_option 186 | config_option_list depends 187 | config_option_list help 188 ; 189 190 config_option: type prompt_stmt_opt T_EOL 191 { 192 menu_set_type($1); 193 printd(DEBUG_PARSE, "%s:%d:type(%u)\n", cur_filename, cur_lineno, $1); 194 }; 195 196 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL 197 { 198 menu_add_prompt(P_PROMPT, $2, $3); 199 printd(DEBUG_PARSE, "%s:%d:prompt\n", cur_filename, cur_lineno); 200 }; 201 202 config_option: default expr if_expr T_EOL 203 { 204 menu_add_expr(P_DEFAULT, $2, $3); 205 if ($1 != S_UNKNOWN) 206 menu_set_type($1); 207 printd(DEBUG_PARSE, "%s:%d:default(%u)\n", cur_filename, cur_lineno, 208 $1); 209 }; 210 211 config_option: T_SELECT nonconst_symbol if_expr T_EOL 212 { 213 menu_add_symbol(P_SELECT, $2, $3); 214 printd(DEBUG_PARSE, "%s:%d:select\n", cur_filename, cur_lineno); 215 }; 216 217 config_option: T_IMPLY nonconst_symbol if_expr T_EOL 218 { 219 menu_add_symbol(P_IMPLY, $2, $3); 220 printd(DEBUG_PARSE, "%s:%d:imply\n", cur_filename, cur_lineno); 221 }; 222 223 config_option: T_RANGE symbol symbol if_expr T_EOL 224 { 225 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4); 226 printd(DEBUG_PARSE, "%s:%d:range\n", cur_filename, cur_lineno); 227 }; 228 229 config_option: T_MODULES T_EOL 230 { 231 if (modules_sym) 232 zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'", 233 current_entry->sym->name, modules_sym->name); 234 modules_sym = current_entry->sym; 235 }; 236 237 /* choice entry */ 238 239 choice: T_CHOICE T_EOL 240 { 241 struct symbol *sym = sym_lookup(NULL, 0); 242 243 menu_add_entry(sym); 244 menu_set_type(S_BOOLEAN); 245 INIT_LIST_HEAD(¤t_entry->choice_members); 246 247 printd(DEBUG_PARSE, "%s:%d:choice\n", cur_filename, cur_lineno); 248 }; 249 250 choice_entry: choice choice_option_list 251 { 252 if (!current_entry->prompt) { 253 fprintf(stderr, "%s:%d: error: choice must have a prompt\n", 254 current_entry->filename, current_entry->lineno); 255 yynerrs++; 256 } 257 258 $$ = menu_add_menu(); 259 260 current_choice = current_entry; 261 }; 262 263 choice_end: end 264 { 265 current_choice = NULL; 266 267 if (zconf_endtoken($1, "choice")) { 268 menu_end_menu(); 269 printd(DEBUG_PARSE, "%s:%d:endchoice\n", cur_filename, cur_lineno); 270 } 271 }; 272 273 choice_stmt: choice_entry stmt_list_in_choice choice_end 274 ; 275 276 choice_option_list: 277 /* empty */ 278 | choice_option_list choice_option 279 | choice_option_list depends 280 | choice_option_list help 281 ; 282 283 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL 284 { 285 menu_add_prompt(P_PROMPT, $2, $3); 286 printd(DEBUG_PARSE, "%s:%d:prompt\n", cur_filename, cur_lineno); 287 }; 288 289 choice_option: T_BOOL T_WORD_QUOTE if_expr T_EOL 290 { 291 menu_add_prompt(P_PROMPT, $2, $3); 292 printd(DEBUG_PARSE, "%s:%d:bool\n", cur_filename, cur_lineno); 293 }; 294 295 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL 296 { 297 menu_add_symbol(P_DEFAULT, $2, $3); 298 printd(DEBUG_PARSE, "%s:%d:default\n", cur_filename, cur_lineno); 299 }; 300 301 type: 302 T_BOOL { $$ = S_BOOLEAN; } 303 | T_TRISTATE { $$ = S_TRISTATE; } 304 | T_INT { $$ = S_INT; } 305 | T_HEX { $$ = S_HEX; } 306 | T_STRING { $$ = S_STRING; } 307 308 default: 309 T_DEFAULT { $$ = S_UNKNOWN; } 310 | T_DEF_BOOL { $$ = S_BOOLEAN; } 311 | T_DEF_TRISTATE { $$ = S_TRISTATE; } 312 313 /* if entry */ 314 315 if_entry: T_IF expr T_EOL 316 { 317 printd(DEBUG_PARSE, "%s:%d:if\n", cur_filename, cur_lineno); 318 menu_add_entry(NULL); 319 menu_add_dep($2); 320 $$ = menu_add_menu(); 321 }; 322 323 if_end: end 324 { 325 if (zconf_endtoken($1, "if")) { 326 menu_end_menu(); 327 printd(DEBUG_PARSE, "%s:%d:endif\n", cur_filename, cur_lineno); 328 } 329 }; 330 331 if_stmt: if_entry stmt_list if_end 332 ; 333 334 if_stmt_in_choice: if_entry stmt_list_in_choice if_end 335 ; 336 337 /* menu entry */ 338 339 menu: T_MENU T_WORD_QUOTE T_EOL 340 { 341 menu_add_entry(NULL); 342 menu_add_prompt(P_MENU, $2, NULL); 343 printd(DEBUG_PARSE, "%s:%d:menu\n", cur_filename, cur_lineno); 344 }; 345 346 menu_entry: menu menu_option_list 347 { 348 $$ = menu_add_menu(); 349 }; 350 351 menu_end: end 352 { 353 if (zconf_endtoken($1, "menu")) { 354 menu_end_menu(); 355 printd(DEBUG_PARSE, "%s:%d:endmenu\n", cur_filename, cur_lineno); 356 } 357 }; 358 359 menu_stmt: menu_entry stmt_list menu_end 360 ; 361 362 menu_option_list: 363 /* empty */ 364 | menu_option_list visible 365 | menu_option_list depends 366 ; 367 368 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL 369 { 370 printd(DEBUG_PARSE, "%s:%d:source %s\n", cur_filename, cur_lineno, $2); 371 zconf_nextfile($2); 372 free($2); 373 }; 374 375 /* comment entry */ 376 377 comment: T_COMMENT T_WORD_QUOTE T_EOL 378 { 379 menu_add_entry(NULL); 380 menu_add_prompt(P_COMMENT, $2, NULL); 381 printd(DEBUG_PARSE, "%s:%d:comment\n", cur_filename, cur_lineno); 382 }; 383 384 comment_stmt: comment comment_option_list 385 ; 386 387 comment_option_list: 388 /* empty */ 389 | comment_option_list depends 390 ; 391 392 /* help option */ 393 394 help_start: T_HELP T_EOL 395 { 396 printd(DEBUG_PARSE, "%s:%d:help\n", cur_filename, cur_lineno); 397 zconf_starthelp(); 398 }; 399 400 help: help_start T_HELPTEXT 401 { 402 if (current_entry->help) { 403 free(current_entry->help); 404 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used", 405 current_entry->sym->name ?: "<choice>"); 406 } 407 408 /* Is the help text empty or all whitespace? */ 409 if ($2[strspn($2, " \f\n\r\t\v")] == '\0') 410 zconfprint("warning: '%s' defined with blank help text", 411 current_entry->sym->name ?: "<choice>"); 412 413 current_entry->help = $2; 414 }; 415 416 /* depends option */ 417 418 depends: T_DEPENDS T_ON expr T_EOL 419 { 420 menu_add_dep($3); 421 printd(DEBUG_PARSE, "%s:%d:depends on\n", cur_filename, cur_lineno); 422 }; 423 424 /* visibility option */ 425 visible: T_VISIBLE if_expr T_EOL 426 { 427 menu_add_visibility($2); 428 }; 429 430 /* prompt statement */ 431 432 prompt_stmt_opt: 433 /* empty */ 434 | T_WORD_QUOTE if_expr 435 { 436 menu_add_prompt(P_PROMPT, $1, $2); 437 }; 438 439 end: T_ENDMENU T_EOL { $$ = "menu"; } 440 | T_ENDCHOICE T_EOL { $$ = "choice"; } 441 | T_ENDIF T_EOL { $$ = "if"; } 442 ; 443 444 if_expr: /* empty */ { $$ = NULL; } 445 | T_IF expr { $$ = $2; } 446 ; 447 448 expr: symbol { $$ = expr_alloc_symbol($1); } 449 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); } 450 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); } 451 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); } 452 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); } 453 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); } 454 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); } 455 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; } 456 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); } 457 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); } 458 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); } 459 ; 460 461 /* For symbol definitions, selects, etc., where quotes are not accepted */ 462 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }; 463 464 symbol: nonconst_symbol 465 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); } 466 ; 467 468 /* assignment statement */ 469 470 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); } 471 472 assign_op: 473 T_EQUAL { $$ = VAR_RECURSIVE; } 474 | T_COLON_EQUAL { $$ = VAR_SIMPLE; } 475 | T_PLUS_EQUAL { $$ = VAR_APPEND; } 476 ; 477 478 assign_val: 479 /* empty */ { $$ = xstrdup(""); }; 480 | T_ASSIGN_VAL 481 ; 482 483 %% 484 485 /** 486 * choice_check_sanity - check sanity of a choice member 487 * 488 * @menu: menu of the choice member 489 * 490 * Return: -1 if an error is found, 0 otherwise. 491 */ 492 static int choice_check_sanity(const struct menu *menu) 493 { 494 struct property *prop; 495 int ret = 0; 496 497 for (prop = menu->sym->prop; prop; prop = prop->next) { 498 if (prop->type == P_DEFAULT) { 499 fprintf(stderr, "%s:%d: error: %s", 500 prop->filename, prop->lineno, 501 "defaults for choice values not supported\n"); 502 ret = -1; 503 } 504 505 if (prop->menu != menu && prop->type == P_PROMPT && 506 prop->menu->parent != menu->parent) { 507 fprintf(stderr, "%s:%d: error: %s", 508 prop->filename, prop->lineno, 509 "choice value has a prompt outside its choice group\n"); 510 ret = -1; 511 } 512 } 513 514 return ret; 515 } 516 517 void conf_parse(const char *name) 518 { 519 struct menu *menu; 520 521 autoconf_cmd = str_new(); 522 523 str_printf(&autoconf_cmd, "\ndeps_config := \\\n"); 524 525 zconf_initscan(name); 526 527 _menu_init(); 528 529 if (getenv("ZCONF_DEBUG")) 530 yydebug = 1; 531 yyparse(); 532 533 str_printf(&autoconf_cmd, 534 "\n" 535 "$(autoconfig): $(deps_config)\n" 536 "$(deps_config): ;\n"); 537 538 env_write_dep(&autoconf_cmd); 539 540 /* Variables are expanded in the parse phase. We can free them here. */ 541 variable_all_del(); 542 543 if (yynerrs) 544 exit(1); 545 if (!modules_sym) 546 modules_sym = &symbol_no; 547 548 if (!menu_has_prompt(&rootmenu)) { 549 current_entry = &rootmenu; 550 menu_add_prompt(P_MENU, "Main menu", NULL); 551 } 552 553 menu_finalize(); 554 555 menu_for_each_entry(menu) { 556 struct menu *child; 557 558 if (menu->sym && sym_check_deps(menu->sym)) 559 yynerrs++; 560 561 if (menu->sym && sym_is_choice(menu->sym)) { 562 menu_for_each_sub_entry(child, menu) 563 if (child->sym && choice_check_sanity(child)) 564 yynerrs++; 565 } 566 } 567 568 if (yynerrs) 569 exit(1); 570 conf_set_changed(true); 571 } 572 573 static bool zconf_endtoken(const char *tokenname, 574 const char *expected_tokenname) 575 { 576 if (strcmp(tokenname, expected_tokenname)) { 577 zconf_error("unexpected '%s' within %s block", 578 tokenname, expected_tokenname); 579 yynerrs++; 580 return false; 581 } 582 if (strcmp(current_menu->filename, cur_filename)) { 583 zconf_error("'%s' in different file than '%s'", 584 tokenname, expected_tokenname); 585 fprintf(stderr, "%s:%d: location of the '%s'\n", 586 current_menu->filename, current_menu->lineno, 587 expected_tokenname); 588 yynerrs++; 589 return false; 590 } 591 return true; 592 } 593 594 static void zconfprint(const char *err, ...) 595 { 596 va_list ap; 597 598 fprintf(stderr, "%s:%d: ", cur_filename, cur_lineno); 599 va_start(ap, err); 600 vfprintf(stderr, err, ap); 601 va_end(ap); 602 fprintf(stderr, "\n"); 603 } 604 605 static void zconf_error(const char *err, ...) 606 { 607 va_list ap; 608 609 yynerrs++; 610 fprintf(stderr, "%s:%d: ", cur_filename, cur_lineno); 611 va_start(ap, err); 612 vfprintf(stderr, err, ap); 613 va_end(ap); 614 fprintf(stderr, "\n"); 615 } 616 617 static void yyerror(const char *err) 618 { 619 fprintf(stderr, "%s:%d: %s\n", cur_filename, cur_lineno, err); 620 } 621 622 static void print_quoted_string(FILE *out, const char *str) 623 { 624 const char *p; 625 int len; 626 627 putc('"', out); 628 while ((p = strchr(str, '"'))) { 629 len = p - str; 630 if (len) 631 fprintf(out, "%.*s", len, str); 632 fputs("\\\"", out); 633 str = p + 1; 634 } 635 fputs(str, out); 636 putc('"', out); 637 } 638 639 static void print_symbol(FILE *out, const struct menu *menu) 640 { 641 struct symbol *sym = menu->sym; 642 struct property *prop; 643 644 if (sym_is_choice(sym)) 645 fprintf(out, "\nchoice\n"); 646 else 647 fprintf(out, "\nconfig %s\n", sym->name); 648 switch (sym->type) { 649 case S_BOOLEAN: 650 fputs(" bool\n", out); 651 break; 652 case S_TRISTATE: 653 fputs(" tristate\n", out); 654 break; 655 case S_STRING: 656 fputs(" string\n", out); 657 break; 658 case S_INT: 659 fputs(" integer\n", out); 660 break; 661 case S_HEX: 662 fputs(" hex\n", out); 663 break; 664 default: 665 fputs(" ???\n", out); 666 break; 667 } 668 for (prop = sym->prop; prop; prop = prop->next) { 669 if (prop->menu != menu) 670 continue; 671 switch (prop->type) { 672 case P_PROMPT: 673 fputs(" prompt ", out); 674 print_quoted_string(out, prop->text); 675 if (!expr_is_yes(prop->visible.expr)) { 676 fputs(" if ", out); 677 expr_fprint(prop->visible.expr, out); 678 } 679 fputc('\n', out); 680 break; 681 case P_DEFAULT: 682 fputs( " default ", out); 683 expr_fprint(prop->expr, out); 684 if (!expr_is_yes(prop->visible.expr)) { 685 fputs(" if ", out); 686 expr_fprint(prop->visible.expr, out); 687 } 688 fputc('\n', out); 689 break; 690 case P_SELECT: 691 fputs( " select ", out); 692 expr_fprint(prop->expr, out); 693 fputc('\n', out); 694 break; 695 case P_IMPLY: 696 fputs( " imply ", out); 697 expr_fprint(prop->expr, out); 698 fputc('\n', out); 699 break; 700 case P_RANGE: 701 fputs( " range ", out); 702 expr_fprint(prop->expr, out); 703 fputc('\n', out); 704 break; 705 case P_MENU: 706 fputs( " menu ", out); 707 print_quoted_string(out, prop->text); 708 fputc('\n', out); 709 break; 710 case P_SYMBOL: 711 fputs( " symbol ", out); 712 fprintf(out, "%s\n", prop->menu->sym->name); 713 break; 714 default: 715 fprintf(out, " unknown prop %d!\n", prop->type); 716 break; 717 } 718 } 719 if (menu->help) { 720 int len = strlen(menu->help); 721 while (menu->help[--len] == '\n') 722 menu->help[len] = 0; 723 fprintf(out, " help\n%s\n", menu->help); 724 } 725 } 726 727 void zconfdump(FILE *out) 728 { 729 struct property *prop; 730 struct symbol *sym; 731 struct menu *menu; 732 733 menu = rootmenu.list; 734 while (menu) { 735 if ((sym = menu->sym)) 736 print_symbol(out, menu); 737 else if ((prop = menu->prompt)) { 738 switch (prop->type) { 739 case P_COMMENT: 740 fputs("\ncomment ", out); 741 print_quoted_string(out, prop->text); 742 fputs("\n", out); 743 break; 744 case P_MENU: 745 fputs("\nmenu ", out); 746 print_quoted_string(out, prop->text); 747 fputs("\n", out); 748 break; 749 default: 750 ; 751 } 752 if (!expr_is_yes(prop->visible.expr)) { 753 fputs(" depends ", out); 754 expr_fprint(prop->visible.expr, out); 755 fputc('\n', out); 756 } 757 } 758 759 if (menu->list) 760 menu = menu->list; 761 else if (menu->next) 762 menu = menu->next; 763 else while ((menu = menu->parent)) { 764 if (menu->prompt && menu->prompt->type == P_MENU) 765 fputs("\nendmenu\n", out); 766 if (menu->next) { 767 menu = menu->next; 768 break; 769 } 770 } 771 } 772 } 773