Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild
[linux-2.6] / scripts / kconfig / conf.c
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 <unistd.h>
10 #include <time.h>
11 #include <sys/stat.h>
12
13 #define LKC_DIRECT_LINK
14 #include "lkc.h"
15
16 static void conf(struct menu *menu);
17 static void check_conf(struct menu *menu);
18
19 enum {
20         ask_all,
21         ask_new,
22         ask_silent,
23         set_default,
24         set_yes,
25         set_mod,
26         set_no,
27         set_random
28 } input_mode = ask_all;
29 char *defconfig_file;
30
31 static int indent = 1;
32 static int valid_stdin = 1;
33 static int conf_cnt;
34 static char line[128];
35 static struct menu *rootEntry;
36
37 static char nohelp_text[] = N_("Sorry, no help available for this option yet.\n");
38
39 static void strip(char *str)
40 {
41         char *p = str;
42         int l;
43
44         while ((isspace(*p)))
45                 p++;
46         l = strlen(p);
47         if (p != str)
48                 memmove(str, p, l + 1);
49         if (!l)
50                 return;
51         p = str + l - 1;
52         while ((isspace(*p)))
53                 *p-- = 0;
54 }
55
56 static void check_stdin(void)
57 {
58         if (!valid_stdin && input_mode == ask_silent) {
59                 printf(_("aborted!\n\n"));
60                 printf(_("Console input/output is redirected. "));
61                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
62                 exit(1);
63         }
64 }
65
66 static void conf_askvalue(struct symbol *sym, const char *def)
67 {
68         enum symbol_type type = sym_get_type(sym);
69         tristate val;
70
71         if (!sym_has_value(sym))
72                 printf("(NEW) ");
73
74         line[0] = '\n';
75         line[1] = 0;
76
77         if (!sym_is_changable(sym)) {
78                 printf("%s\n", def);
79                 line[0] = '\n';
80                 line[1] = 0;
81                 return;
82         }
83
84         switch (input_mode) {
85         case set_no:
86         case set_mod:
87         case set_yes:
88         case set_random:
89                 if (sym_has_value(sym)) {
90                         printf("%s\n", def);
91                         return;
92                 }
93                 break;
94         case ask_new:
95         case ask_silent:
96                 if (sym_has_value(sym)) {
97                         printf("%s\n", def);
98                         return;
99                 }
100                 check_stdin();
101         case ask_all:
102                 fflush(stdout);
103                 fgets(line, 128, stdin);
104                 return;
105         case set_default:
106                 printf("%s\n", def);
107                 return;
108         default:
109                 break;
110         }
111
112         switch (type) {
113         case S_INT:
114         case S_HEX:
115         case S_STRING:
116                 printf("%s\n", def);
117                 return;
118         default:
119                 ;
120         }
121         switch (input_mode) {
122         case set_yes:
123                 if (sym_tristate_within_range(sym, yes)) {
124                         line[0] = 'y';
125                         line[1] = '\n';
126                         line[2] = 0;
127                         break;
128                 }
129         case set_mod:
130                 if (type == S_TRISTATE) {
131                         if (sym_tristate_within_range(sym, mod)) {
132                                 line[0] = 'm';
133                                 line[1] = '\n';
134                                 line[2] = 0;
135                                 break;
136                         }
137                 } else {
138                         if (sym_tristate_within_range(sym, yes)) {
139                                 line[0] = 'y';
140                                 line[1] = '\n';
141                                 line[2] = 0;
142                                 break;
143                         }
144                 }
145         case set_no:
146                 if (sym_tristate_within_range(sym, no)) {
147                         line[0] = 'n';
148                         line[1] = '\n';
149                         line[2] = 0;
150                         break;
151                 }
152         case set_random:
153                 do {
154                         val = (tristate)(random() % 3);
155                 } while (!sym_tristate_within_range(sym, val));
156                 switch (val) {
157                 case no: line[0] = 'n'; break;
158                 case mod: line[0] = 'm'; break;
159                 case yes: line[0] = 'y'; break;
160                 }
161                 line[1] = '\n';
162                 line[2] = 0;
163                 break;
164         default:
165                 break;
166         }
167         printf("%s", line);
168 }
169
170 int conf_string(struct menu *menu)
171 {
172         struct symbol *sym = menu->sym;
173         const char *def, *help;
174
175         while (1) {
176                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
177                 printf("(%s) ", sym->name);
178                 def = sym_get_string_value(sym);
179                 if (sym_get_string_value(sym))
180                         printf("[%s] ", def);
181                 conf_askvalue(sym, def);
182                 switch (line[0]) {
183                 case '\n':
184                         break;
185                 case '?':
186                         /* print help */
187                         if (line[1] == '\n') {
188                                 help = nohelp_text;
189                                 if (menu->sym->help)
190                                         help = menu->sym->help;
191                                 printf("\n%s\n", menu->sym->help);
192                                 def = NULL;
193                                 break;
194                         }
195                 default:
196                         line[strlen(line)-1] = 0;
197                         def = line;
198                 }
199                 if (def && sym_set_string_value(sym, def))
200                         return 0;
201         }
202 }
203
204 static int conf_sym(struct menu *menu)
205 {
206         struct symbol *sym = menu->sym;
207         int type;
208         tristate oldval, newval;
209         const char *help;
210
211         while (1) {
212                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
213                 if (sym->name)
214                         printf("(%s) ", sym->name);
215                 type = sym_get_type(sym);
216                 putchar('[');
217                 oldval = sym_get_tristate_value(sym);
218                 switch (oldval) {
219                 case no:
220                         putchar('N');
221                         break;
222                 case mod:
223                         putchar('M');
224                         break;
225                 case yes:
226                         putchar('Y');
227                         break;
228                 }
229                 if (oldval != no && sym_tristate_within_range(sym, no))
230                         printf("/n");
231                 if (oldval != mod && sym_tristate_within_range(sym, mod))
232                         printf("/m");
233                 if (oldval != yes && sym_tristate_within_range(sym, yes))
234                         printf("/y");
235                 if (sym->help)
236                         printf("/?");
237                 printf("] ");
238                 conf_askvalue(sym, sym_get_string_value(sym));
239                 strip(line);
240
241                 switch (line[0]) {
242                 case 'n':
243                 case 'N':
244                         newval = no;
245                         if (!line[1] || !strcmp(&line[1], "o"))
246                                 break;
247                         continue;
248                 case 'm':
249                 case 'M':
250                         newval = mod;
251                         if (!line[1])
252                                 break;
253                         continue;
254                 case 'y':
255                 case 'Y':
256                         newval = yes;
257                         if (!line[1] || !strcmp(&line[1], "es"))
258                                 break;
259                         continue;
260                 case 0:
261                         newval = oldval;
262                         break;
263                 case '?':
264                         goto help;
265                 default:
266                         continue;
267                 }
268                 if (sym_set_tristate_value(sym, newval))
269                         return 0;
270 help:
271                 help = nohelp_text;
272                 if (sym->help)
273                         help = sym->help;
274                 printf("\n%s\n", help);
275         }
276 }
277
278 static int conf_choice(struct menu *menu)
279 {
280         struct symbol *sym, *def_sym;
281         struct menu *child;
282         int type;
283         bool is_new;
284
285         sym = menu->sym;
286         type = sym_get_type(sym);
287         is_new = !sym_has_value(sym);
288         if (sym_is_changable(sym)) {
289                 conf_sym(menu);
290                 sym_calc_value(sym);
291                 switch (sym_get_tristate_value(sym)) {
292                 case no:
293                         return 1;
294                 case mod:
295                         return 0;
296                 case yes:
297                         break;
298                 }
299         } else {
300                 switch (sym_get_tristate_value(sym)) {
301                 case no:
302                         return 1;
303                 case mod:
304                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
305                         return 0;
306                 case yes:
307                         break;
308                 }
309         }
310
311         while (1) {
312                 int cnt, def;
313
314                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
315                 def_sym = sym_get_choice_value(sym);
316                 cnt = def = 0;
317                 line[0] = '0';
318                 line[1] = 0;
319                 for (child = menu->list; child; child = child->next) {
320                         if (!menu_is_visible(child))
321                                 continue;
322                         if (!child->sym) {
323                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
324                                 continue;
325                         }
326                         cnt++;
327                         if (child->sym == def_sym) {
328                                 def = cnt;
329                                 printf("%*c", indent, '>');
330                         } else
331                                 printf("%*c", indent, ' ');
332                         printf(" %d. %s", cnt, menu_get_prompt(child));
333                         if (child->sym->name)
334                                 printf(" (%s)", child->sym->name);
335                         if (!sym_has_value(child->sym))
336                                 printf(" (NEW)");
337                         printf("\n");
338                 }
339                 printf("%*schoice", indent - 1, "");
340                 if (cnt == 1) {
341                         printf("[1]: 1\n");
342                         goto conf_childs;
343                 }
344                 printf("[1-%d", cnt);
345                 if (sym->help)
346                         printf("?");
347                 printf("]: ");
348                 switch (input_mode) {
349                 case ask_new:
350                 case ask_silent:
351                         if (!is_new) {
352                                 cnt = def;
353                                 printf("%d\n", cnt);
354                                 break;
355                         }
356                         check_stdin();
357                 case ask_all:
358                         fflush(stdout);
359                         fgets(line, 128, stdin);
360                         strip(line);
361                         if (line[0] == '?') {
362                                 printf("\n%s\n", menu->sym->help ?
363                                         menu->sym->help : nohelp_text);
364                                 continue;
365                         }
366                         if (!line[0])
367                                 cnt = def;
368                         else if (isdigit(line[0]))
369                                 cnt = atoi(line);
370                         else
371                                 continue;
372                         break;
373                 case set_random:
374                         def = (random() % cnt) + 1;
375                 case set_default:
376                 case set_yes:
377                 case set_mod:
378                 case set_no:
379                         cnt = def;
380                         printf("%d\n", cnt);
381                         break;
382                 }
383
384         conf_childs:
385                 for (child = menu->list; child; child = child->next) {
386                         if (!child->sym || !menu_is_visible(child))
387                                 continue;
388                         if (!--cnt)
389                                 break;
390                 }
391                 if (!child)
392                         continue;
393                 if (line[strlen(line) - 1] == '?') {
394                         printf("\n%s\n", child->sym->help ?
395                                 child->sym->help : nohelp_text);
396                         continue;
397                 }
398                 sym_set_choice_value(sym, child->sym);
399                 if (child->list) {
400                         indent += 2;
401                         conf(child->list);
402                         indent -= 2;
403                 }
404                 return 1;
405         }
406 }
407
408 static void conf(struct menu *menu)
409 {
410         struct symbol *sym;
411         struct property *prop;
412         struct menu *child;
413
414         if (!menu_is_visible(menu))
415                 return;
416
417         sym = menu->sym;
418         prop = menu->prompt;
419         if (prop) {
420                 const char *prompt;
421
422                 switch (prop->type) {
423                 case P_MENU:
424                         if (input_mode == ask_silent && rootEntry != menu) {
425                                 check_conf(menu);
426                                 return;
427                         }
428                 case P_COMMENT:
429                         prompt = menu_get_prompt(menu);
430                         if (prompt)
431                                 printf("%*c\n%*c %s\n%*c\n",
432                                         indent, '*',
433                                         indent, '*', prompt,
434                                         indent, '*');
435                 default:
436                         ;
437                 }
438         }
439
440         if (!sym)
441                 goto conf_childs;
442
443         if (sym_is_choice(sym)) {
444                 conf_choice(menu);
445                 if (sym->curr.tri != mod)
446                         return;
447                 goto conf_childs;
448         }
449
450         switch (sym->type) {
451         case S_INT:
452         case S_HEX:
453         case S_STRING:
454                 conf_string(menu);
455                 break;
456         default:
457                 conf_sym(menu);
458                 break;
459         }
460
461 conf_childs:
462         if (sym)
463                 indent += 2;
464         for (child = menu->list; child; child = child->next)
465                 conf(child);
466         if (sym)
467                 indent -= 2;
468 }
469
470 static void check_conf(struct menu *menu)
471 {
472         struct symbol *sym;
473         struct menu *child;
474
475         if (!menu_is_visible(menu))
476                 return;
477
478         sym = menu->sym;
479         if (sym && !sym_has_value(sym)) {
480                 if (sym_is_changable(sym) ||
481                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
482                         if (!conf_cnt++)
483                                 printf(_("*\n* Restart config...\n*\n"));
484                         rootEntry = menu_get_parent_menu(menu);
485                         conf(rootEntry);
486                 }
487         }
488
489         for (child = menu->list; child; child = child->next)
490                 check_conf(child);
491 }
492
493 int main(int ac, char **av)
494 {
495         int i = 1;
496         const char *name;
497         struct stat tmpstat;
498
499         if (ac > i && av[i][0] == '-') {
500                 switch (av[i++][1]) {
501                 case 'o':
502                         input_mode = ask_new;
503                         break;
504                 case 's':
505                         input_mode = ask_silent;
506                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
507                         break;
508                 case 'd':
509                         input_mode = set_default;
510                         break;
511                 case 'D':
512                         input_mode = set_default;
513                         defconfig_file = av[i++];
514                         if (!defconfig_file) {
515                                 printf(_("%s: No default config file specified\n"),
516                                         av[0]);
517                                 exit(1);
518                         }
519                         break;
520                 case 'n':
521                         input_mode = set_no;
522                         break;
523                 case 'm':
524                         input_mode = set_mod;
525                         break;
526                 case 'y':
527                         input_mode = set_yes;
528                         break;
529                 case 'r':
530                         input_mode = set_random;
531                         srandom(time(NULL));
532                         break;
533                 case 'h':
534                 case '?':
535                         printf("%s [-o|-s] config\n", av[0]);
536                         exit(0);
537                 }
538         }
539         name = av[i];
540         if (!name) {
541                 printf(_("%s: Kconfig file missing\n"), av[0]);
542         }
543         conf_parse(name);
544         //zconfdump(stdout);
545         switch (input_mode) {
546         case set_default:
547                 if (!defconfig_file)
548                         defconfig_file = conf_get_default_confname();
549                 if (conf_read(defconfig_file)) {
550                         printf("***\n"
551                                 "*** Can't find default configuration \"%s\"!\n"
552                                 "***\n", defconfig_file);
553                         exit(1);
554                 }
555                 break;
556         case ask_silent:
557                 if (stat(".config", &tmpstat)) {
558                         printf(_("***\n"
559                                 "*** You have not yet configured your kernel!\n"
560                                 "***\n"
561                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
562                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
563                                 "***\n"));
564                         exit(1);
565                 }
566         case ask_all:
567         case ask_new:
568                 conf_read(NULL);
569                 break;
570         case set_no:
571         case set_mod:
572         case set_yes:
573         case set_random:
574                 name = getenv("KCONFIG_ALLCONFIG");
575                 if (name && !stat(name, &tmpstat)) {
576                         conf_read_simple(name);
577                         break;
578                 }
579                 switch (input_mode) {
580                 case set_no:     name = "allno.config"; break;
581                 case set_mod:    name = "allmod.config"; break;
582                 case set_yes:    name = "allyes.config"; break;
583                 case set_random: name = "allrandom.config"; break;
584                 default: break;
585                 }
586                 if (!stat(name, &tmpstat))
587                         conf_read_simple(name);
588                 else if (!stat("all.config", &tmpstat))
589                         conf_read_simple("all.config");
590                 break;
591         default:
592                 break;
593         }
594
595         if (input_mode != ask_silent) {
596                 rootEntry = &rootmenu;
597                 conf(&rootmenu);
598                 if (input_mode == ask_all) {
599                         input_mode = ask_silent;
600                         valid_stdin = 1;
601                 }
602         }
603         do {
604                 conf_cnt = 0;
605                 check_conf(&rootmenu);
606         } while (conf_cnt);
607         if (conf_write(NULL)) {
608                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
609                 return 1;
610         }
611         return 0;
612 }