source: MondoRescue/branches/2.2.5/mindi-busybox/scripts/kconfig/menu.c@ 1770

Last change on this file since 1770 was 1765, checked in by Bruno Cornec, 16 years ago

Update to busybox 1.7.2
  • Property svn:eol-style set to native
File size: 9.9 KB
Line 
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 <stdlib.h>
7#include <string.h>
8
9#define LKC_DIRECT_LINK
10#include "lkc.h"
11
12struct menu rootmenu;
13static struct menu **last_entry_ptr;
14
15struct file *file_list;
16struct file *current_file;
17
18static void menu_warn(struct menu *menu, const char *fmt, ...)
19{
20 va_list ap;
21 va_start(ap, fmt);
22 fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
23 vfprintf(stderr, fmt, ap);
24 fprintf(stderr, "\n");
25 va_end(ap);
26}
27
28static void prop_warn(struct property *prop, const char *fmt, ...)
29{
30 va_list ap;
31 va_start(ap, fmt);
32 fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
33 vfprintf(stderr, fmt, ap);
34 fprintf(stderr, "\n");
35 va_end(ap);
36}
37
38void menu_init(void)
39{
40 current_entry = current_menu = &rootmenu;
41 last_entry_ptr = &rootmenu.list;
42}
43
44void menu_add_entry(struct symbol *sym)
45{
46 struct menu *menu;
47
48 menu = malloc(sizeof(*menu));
49 memset(menu, 0, sizeof(*menu));
50 menu->sym = sym;
51 menu->parent = current_menu;
52 menu->file = current_file;
53 menu->lineno = zconf_lineno();
54
55 *last_entry_ptr = menu;
56 last_entry_ptr = &menu->next;
57 current_entry = menu;
58}
59
60void menu_end_entry(void)
61{
62}
63
64struct menu *menu_add_menu(void)
65{
66 menu_end_entry();
67 last_entry_ptr = &current_entry->list;
68 return current_menu = current_entry;
69}
70
71void menu_end_menu(void)
72{
73 last_entry_ptr = &current_menu->next;
74 current_menu = current_menu->parent;
75}
76
77struct expr *menu_check_dep(struct expr *e)
78{
79 if (!e)
80 return e;
81
82 switch (e->type) {
83 case E_NOT:
84 e->left.expr = menu_check_dep(e->left.expr);
85 break;
86 case E_OR:
87 case E_AND:
88 e->left.expr = menu_check_dep(e->left.expr);
89 e->right.expr = menu_check_dep(e->right.expr);
90 break;
91 case E_SYMBOL:
92 /* change 'm' into 'm' && MODULES */
93 if (e->left.sym == &symbol_mod)
94 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
95 break;
96 default:
97 break;
98 }
99 return e;
100}
101
102void menu_add_dep(struct expr *dep)
103{
104 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
105}
106
107void menu_set_type(int type)
108{
109 struct symbol *sym = current_entry->sym;
110
111 if (sym->type == type)
112 return;
113 if (sym->type == S_UNKNOWN) {
114 sym->type = type;
115 return;
116 }
117 menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'\n",
118 sym->name ? sym->name : "<choice>",
119 sym_type_name(sym->type), sym_type_name(type));
120}
121
122struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
123{
124 struct property *prop = prop_alloc(type, current_entry->sym);
125
126 prop->menu = current_entry;
127 prop->text = prompt;
128 prop->expr = expr;
129 prop->visible.expr = menu_check_dep(dep);
130
131 if (prompt) {
132 if (current_entry->prompt)
133 menu_warn(current_entry, "prompt redefined\n");
134 current_entry->prompt = prop;
135 }
136
137 return prop;
138}
139
140struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
141{
142 return menu_add_prop(type, prompt, NULL, dep);
143}
144
145void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
146{
147 menu_add_prop(type, NULL, expr, dep);
148}
149
150void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
151{
152 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
153}
154
155static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
156{
157 return sym2->type == S_INT || sym2->type == S_HEX ||
158 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
159}
160
161void sym_check_prop(struct symbol *sym)
162{
163 struct property *prop;
164 struct symbol *sym2;
165 for (prop = sym->prop; prop; prop = prop->next) {
166 switch (prop->type) {
167 case P_DEFAULT:
168 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
169 prop->expr->type != E_SYMBOL)
170 prop_warn(prop,
171 "default for config symbol '%'"
172 " must be a single symbol", sym->name);
173 break;
174 case P_SELECT:
175 sym2 = prop_get_symbol(prop);
176 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
177 prop_warn(prop,
178 "config symbol '%s' uses select, but is "
179 "not boolean or tristate", sym->name);
180 else if (sym2->type == S_UNKNOWN)
181 prop_warn(prop,
182 "'select' used by config symbol '%s' "
183 "refer to undefined symbol '%s'",
184 sym->name, sym2->name);
185 else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
186 prop_warn(prop,
187 "'%s' has wrong type. 'select' only "
188 "accept arguments of boolean and "
189 "tristate type", sym2->name);
190 break;
191 case P_RANGE:
192 if (sym->type != S_INT && sym->type != S_HEX)
193 prop_warn(prop, "range is only allowed "
194 "for int or hex symbols");
195 if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
196 !menu_range_valid_sym(sym, prop->expr->right.sym))
197 prop_warn(prop, "range is invalid");
198 break;
199 default:
200 ;
201 }
202 }
203}
204
205void menu_finalize(struct menu *parent)
206{
207 struct menu *menu, *last_menu;
208 struct symbol *sym;
209 struct property *prop;
210 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
211
212 sym = parent->sym;
213 if (parent->list) {
214 if (sym && sym_is_choice(sym)) {
215 /* find the first choice value and find out choice type */
216 for (menu = parent->list; menu; menu = menu->next) {
217 if (menu->sym) {
218 current_entry = parent;
219 menu_set_type(menu->sym->type);
220 current_entry = menu;
221 menu_set_type(sym->type);
222 break;
223 }
224 }
225 parentdep = expr_alloc_symbol(sym);
226 } else if (parent->prompt)
227 parentdep = parent->prompt->visible.expr;
228 else
229 parentdep = parent->dep;
230
231 for (menu = parent->list; menu; menu = menu->next) {
232 basedep = expr_transform(menu->dep);
233 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
234 basedep = expr_eliminate_dups(basedep);
235 menu->dep = basedep;
236 if (menu->sym)
237 prop = menu->sym->prop;
238 else
239 prop = menu->prompt;
240 for (; prop; prop = prop->next) {
241 if (prop->menu != menu)
242 continue;
243 dep = expr_transform(prop->visible.expr);
244 dep = expr_alloc_and(expr_copy(basedep), dep);
245 dep = expr_eliminate_dups(dep);
246 if (menu->sym && menu->sym->type != S_TRISTATE)
247 dep = expr_trans_bool(dep);
248 prop->visible.expr = dep;
249 if (prop->type == P_SELECT) {
250 struct symbol *es = prop_get_symbol(prop);
251 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
252 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
253 }
254 }
255 }
256 for (menu = parent->list; menu; menu = menu->next)
257 menu_finalize(menu);
258 } else if (sym) {
259 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
260 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
261 basedep = expr_eliminate_dups(expr_transform(basedep));
262 last_menu = NULL;
263 for (menu = parent->next; menu; menu = menu->next) {
264 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
265 if (!expr_contains_symbol(dep, sym))
266 break;
267 if (expr_depends_symbol(dep, sym))
268 goto next;
269 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
270 dep = expr_eliminate_dups(expr_transform(dep));
271 dep2 = expr_copy(basedep);
272 expr_eliminate_eq(&dep, &dep2);
273 expr_free(dep);
274 if (!expr_is_yes(dep2)) {
275 expr_free(dep2);
276 break;
277 }
278 expr_free(dep2);
279 next:
280 menu_finalize(menu);
281 menu->parent = parent;
282 last_menu = menu;
283 }
284 if (last_menu) {
285 parent->list = parent->next;
286 parent->next = last_menu->next;
287 last_menu->next = NULL;
288 }
289 }
290 for (menu = parent->list; menu; menu = menu->next) {
291 if (sym && sym_is_choice(sym) && menu->sym) {
292 menu->sym->flags |= SYMBOL_CHOICEVAL;
293 if (!menu->prompt)
294 menu_warn(menu, "choice value must have a prompt");
295 for (prop = menu->sym->prop; prop; prop = prop->next) {
296 if (prop->type == P_PROMPT && prop->menu != menu) {
297 prop_warn(prop, "choice values "
298 "currently only support a "
299 "single prompt");
300 }
301 if (prop->type == P_DEFAULT)
302 prop_warn(prop, "defaults for choice "
303 "values not supported");
304 }
305 current_entry = menu;
306 menu_set_type(sym->type);
307 menu_add_symbol(P_CHOICE, sym, NULL);
308 prop = sym_get_choice_prop(sym);
309 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
310 ;
311 *ep = expr_alloc_one(E_CHOICE, NULL);
312 (*ep)->right.sym = menu->sym;
313 }
314 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
315 for (last_menu = menu->list; ; last_menu = last_menu->next) {
316 last_menu->parent = parent;
317 if (!last_menu->next)
318 break;
319 }
320 last_menu->next = menu->next;
321 menu->next = menu->list;
322 menu->list = NULL;
323 }
324 }
325
326 if (sym && !(sym->flags & SYMBOL_WARNED)) {
327 if (sym->type == S_UNKNOWN)
328 menu_warn(parent, "config symbol defined "
329 "without type\n");
330
331 if (sym_is_choice(sym) && !parent->prompt)
332 menu_warn(parent, "choice must have a prompt\n");
333
334 /* Check properties connected to this symbol */
335 sym_check_prop(sym);
336 sym->flags |= SYMBOL_WARNED;
337 }
338
339 if (sym && !sym_is_optional(sym) && parent->prompt) {
340 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
341 expr_alloc_and(parent->prompt->visible.expr,
342 expr_alloc_symbol(&symbol_mod)));
343 }
344}
345
346bool menu_is_visible(struct menu *menu)
347{
348 struct menu *child;
349 struct symbol *sym;
350 tristate visible;
351
352 if (!menu->prompt)
353 return false;
354 sym = menu->sym;
355 if (sym) {
356 sym_calc_value(sym);
357 visible = menu->prompt->visible.tri;
358 } else
359 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
360
361 if (visible != no)
362 return true;
363 if (!sym || sym_get_tristate_value(menu->sym) == no)
364 return false;
365
366 for (child = menu->list; child; child = child->next)
367 if (menu_is_visible(child))
368 return true;
369 return false;
370}
371
372const char *menu_get_prompt(struct menu *menu)
373{
374 if (menu->prompt)
375 return _(menu->prompt->text);
376 else if (menu->sym)
377 return _(menu->sym->name);
378 return NULL;
379}
380
381struct menu *menu_get_root_menu(struct menu *menu)
382{
383 return &rootmenu;
384}
385
386struct menu *menu_get_parent_menu(struct menu *menu)
387{
388 enum prop_type type;
389
390 for (; menu != &rootmenu; menu = menu->parent) {
391 type = menu->prompt ? menu->prompt->type : 0;
392 if (type == P_MENU)
393 break;
394 }
395 return menu;
396}
397
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