[PATCH] config: update usage/help info
[linux-2.6.git] / 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 <stdio.h>
9 #include <string.h>
10 #include <unistd.h>
11 #include <time.h>
12 #include <sys/stat.h>
13
14 #define LKC_DIRECT_LINK
15 #include "lkc.h"
16
17 static void conf(struct menu *menu);
18 static void check_conf(struct menu *menu);
19
20 enum {
21         ask_all,
22         ask_new,
23         ask_silent,
24         set_default,
25         set_yes,
26         set_mod,
27         set_no,
28         set_random
29 } input_mode = ask_all;
30 char *defconfig_file;
31
32 static int indent = 1;
33 static int valid_stdin = 1;
34 static int conf_cnt;
35 static char line[128];
36 static struct menu *rootEntry;
37
38 static char nohelp_text[] = N_("Sorry, no help available for this option yet.\n");
39
40 static void strip(char *str)
41 {
42         char *p = str;
43         int l;
44
45         while ((isspace(*p)))
46                 p++;
47         l = strlen(p);
48         if (p != str)
49                 memmove(str, p, l + 1);
50         if (!l)
51                 return;
52         p = str + l - 1;
53         while ((isspace(*p)))
54                 *p-- = 0;
55 }
56
57 static void check_stdin(void)
58 {
59         if (!valid_stdin && input_mode == ask_silent) {
60                 printf(_("aborted!\n\n"));
61                 printf(_("Console input/output is redirected. "));
62                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
63                 exit(1);
64         }
65 }
66
67 static void conf_askvalue(struct symbol *sym, const char *def)
68 {
69         enum symbol_type type = sym_get_type(sym);
70         tristate val;
71
72         if (!sym_has_value(sym))
73                 printf("(NEW) ");
74
75         line[0] = '\n';
76         line[1] = 0;
77
78         if (!sym_is_changable(sym)) {
79                 printf("%s\n", def);
80                 line[0] = '\n';
81                 line[1] = 0;
82                 return;
83         }
84
85         switch (input_mode) {
86         case set_no:
87         case set_mod:
88         case set_yes:
89         case set_random:
90                 if (sym_has_value(sym)) {
91                         printf("%s\n", def);
92                         return;
93                 }
94                 break;
95         case ask_new:
96         case ask_silent:
97                 if (sym_has_value(sym)) {
98                         printf("%s\n", def);
99                         return;
100                 }
101                 check_stdin();
102         case ask_all:
103                 fflush(stdout);
104                 fgets(line, 128, stdin);
105                 return;
106         case set_default:
107                 printf("%s\n", def);
108                 return;
109         default:
110                 break;
111         }
112
113         switch (type) {
114         case S_INT:
115         case S_HEX:
116         case S_STRING:
117                 printf("%s\n", def);
118                 return;
119         default:
120                 ;
121         }
122         switch (input_mode) {
123         case set_yes:
124                 if (sym_tristate_within_range(sym, yes)) {
125                         line[0] = 'y';
126                         line[1] = '\n';
127                         line[2] = 0;
128                         break;
129                 }
130         case set_mod:
131                 if (type == S_TRISTATE) {
132                         if (sym_tristate_within_range(sym, mod)) {
133                                 line[0] = 'm';
134                                 line[1] = '\n';
135                                 line[2] = 0;
136                                 break;
137                         }
138                 } else {
139                         if (sym_tristate_within_range(sym, yes)) {
140                                 line[0] = 'y';
141                                 line[1] = '\n';
142                                 line[2] = 0;
143                                 break;
144                         }
145                 }
146         case set_no:
147                 if (sym_tristate_within_range(sym, no)) {
148                         line[0] = 'n';
149                         line[1] = '\n';
150                         line[2] = 0;
151                         break;
152                 }
153         case set_random:
154                 do {
155                         val = (tristate)(random() % 3);
156                 } while (!sym_tristate_within_range(sym, val));
157                 switch (val) {
158                 case no: line[0] = 'n'; break;
159                 case mod: line[0] = 'm'; break;
160                 case yes: line[0] = 'y'; break;
161                 }
162                 line[1] = '\n';
163                 line[2] = 0;
164                 break;
165         default:
166                 break;
167         }
168         printf("%s", line);
169 }
170
171 int conf_string(struct menu *menu)
172 {
173         struct symbol *sym = menu->sym;
174         const char *def, *help;
175
176         while (1) {
177                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
178                 printf("(%s) ", sym->name);
179                 def = sym_get_string_value(sym);
180                 if (sym_get_string_value(sym))
181                         printf("[%s] ", def);
182                 conf_askvalue(sym, def);
183                 switch (line[0]) {
184                 case '\n':
185                         break;
186                 case '?':
187                         /* print help */
188                         if (line[1] == '\n') {
189                                 help = nohelp_text;
190                                 if (menu->sym->help)
191                                         help = menu->sym->help;
192                                 printf("\n%s\n", menu->sym->help);
193                                 def = NULL;
194                                 break;
195                         }
196                 default:
197                         line[strlen(line)-1] = 0;
198                         def = line;
199                 }
200                 if (def && sym_set_string_value(sym, def))
201                         return 0;
202         }
203 }
204
205 static int conf_sym(struct menu *menu)
206 {
207         struct symbol *sym = menu->sym;
208         int type;
209         tristate oldval, newval;
210         const char *help;
211
212         while (1) {
213                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
214                 if (sym->name)
215                         printf("(%s) ", sym->name);
216                 type = sym_get_type(sym);
217                 putchar('[');
218                 oldval = sym_get_tristate_value(sym);
219                 switch (oldval) {
220                 case no:
221                         putchar('N');
222                         break;
223                 case mod:
224                         putchar('M');
225                         break;
226                 case yes:
227                         putchar('Y');
228                         break;
229                 }
230                 if (oldval != no && sym_tristate_within_range(sym, no))
231                         printf("/n");
232                 if (oldval != mod && sym_tristate_within_range(sym, mod))
233                         printf("/m");
234                 if (oldval != yes && sym_tristate_within_range(sym, yes))
235                         printf("/y");
236                 if (sym->help)
237                         printf("/?");
238                 printf("] ");
239                 conf_askvalue(sym, sym_get_string_value(sym));
240                 strip(line);
241
242                 switch (line[0]) {
243                 case 'n':
244                 case 'N':
245                         newval = no;
246                         if (!line[1] || !strcmp(&line[1], "o"))
247                                 break;
248                         continue;
249                 case 'm':
250                 case 'M':
251                         newval = mod;
252                         if (!line[1])
253                                 break;
254                         continue;
255                 case 'y':
256                 case 'Y':
257                         newval = yes;
258                         if (!line[1] || !strcmp(&line[1], "es"))
259                                 break;
260                         continue;
261                 case 0:
262                         newval = oldval;
263                         break;
264                 case '?':
265                         goto help;
266                 default:
267                         continue;
268                 }
269                 if (sym_set_tristate_value(sym, newval))
270                         return 0;
271 help:
272                 help = nohelp_text;
273                 if (sym->help)
274                         help = sym->help;
275                 printf("\n%s\n", help);
276         }
277 }
278
279 static int conf_choice(struct menu *menu)
280 {
281         struct symbol *sym, *def_sym;
282         struct menu *child;
283         int type;
284         bool is_new;
285
286         sym = menu->sym;
287         type = sym_get_type(sym);
288         is_new = !sym_has_value(sym);
289         if (sym_is_changable(sym)) {
290                 conf_sym(menu);
291                 sym_calc_value(sym);
292                 switch (sym_get_tristate_value(sym)) {
293                 case no:
294                         return 1;
295                 case mod:
296                         return 0;
297                 case yes:
298                         break;
299                 }
300         } else {
301                 switch (sym_get_tristate_value(sym)) {
302                 case no:
303                         return 1;
304                 case mod:
305                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
306                         return 0;
307                 case yes:
308                         break;
309                 }
310         }
311
312         while (1) {
313                 int cnt, def;
314
315                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
316                 def_sym = sym_get_choice_value(sym);
317                 cnt = def = 0;
318                 line[0] = 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                         fprintf(stderr, "See README for usage info\n");
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 }