1 |
#include <stdio.h>
|
2 |
#include <string.h>
|
3 |
#include <stdarg.h>
|
4 |
#include <stdlib.h>
|
5 |
#include <glib.h>
|
6 |
#include "item.h"
|
7 |
#include "xmlconfig.h"
|
8 |
#include "main.h"
|
9 |
#include "navit.h"
|
10 |
#include "vehicle.h"
|
11 |
#include "speech.h"
|
12 |
#include "gui.h"
|
13 |
#include "debug.h"
|
14 |
#include "callback.h"
|
15 |
#include "command.h"
|
16 |
#include "event.h"
|
17 |
#include "navit_nls.h"
|
18 |
|
19 |
/*
|
20 |
gui.fullscreen=!gui.fullscreen
|
21 |
gui.menu()
|
22 |
gui.get_data()
|
23 |
zoom_in()
|
24 |
zoom_out()
|
25 |
speech.active=!speech.active
|
26 |
osd_configuration=1
|
27 |
Not yet:
|
28 |
osd[type=="xxx"].active=0;osd[type=="yyy"].active=0
|
29 |
*/
|
30 |
|
31 |
|
32 |
struct result {
|
33 |
struct attr attr;
|
34 |
double val;
|
35 |
const char *var;
|
36 |
int varlen;
|
37 |
const char *attrn;
|
38 |
int attrnlen;
|
39 |
int allocated;
|
40 |
};
|
41 |
|
42 |
struct context {
|
43 |
struct attr *attr;
|
44 |
int error;
|
45 |
const char *expr;
|
46 |
struct result res;
|
47 |
};
|
48 |
|
49 |
struct command_saved_cb {
|
50 |
struct callback *cb;
|
51 |
struct attr attr;
|
52 |
};
|
53 |
|
54 |
struct command_saved {
|
55 |
struct context ctx;
|
56 |
struct result res;
|
57 |
char *command; // The command string itself
|
58 |
struct event_idle *idle_ev; // Event to update this command
|
59 |
struct callback *idle_cb;
|
60 |
struct callback *register_cb; // Callback to register all the callbacks
|
61 |
struct event_idle *register_ev; // Idle event to register all the callbacks
|
62 |
struct attr navit;
|
63 |
int num_cbs;
|
64 |
struct command_saved_cb *cbs; // List of callbacks for this saved command
|
65 |
struct callback *cb; // Callback that should be called when we re-evaluate
|
66 |
int error;
|
67 |
};
|
68 |
|
69 |
enum error {
|
70 |
no_error=0,missing_closing_brace, missing_colon, wrong_type, illegal_number_format, illegal_character, missing_closing_bracket, invalid_type, not_ready
|
71 |
};
|
72 |
|
73 |
static void eval_comma(struct context *ctx, struct result *res);
|
74 |
static struct attr ** eval_list(struct context *ctx);
|
75 |
|
76 |
static void
|
77 |
result_free(struct result *res)
|
78 |
{
|
79 |
}
|
80 |
|
81 |
static int command_register_callbacks(struct command_saved *cs);
|
82 |
|
83 |
static const char *
|
84 |
get_op(struct context *ctx, int test, ...)
|
85 |
{
|
86 |
char *op;
|
87 |
const char *ret=NULL;
|
88 |
va_list ap;
|
89 |
|
90 |
while (g_ascii_isspace(*ctx->expr)) {
|
91 |
ctx->expr++;
|
92 |
}
|
93 |
|
94 |
va_start(ap, test);
|
95 |
while ((op = va_arg(ap, char *))) {
|
96 |
if (!strncmp(ctx->expr, op, strlen(op))) {
|
97 |
ret=ctx->expr;
|
98 |
if (! test)
|
99 |
ctx->expr+=strlen(op);
|
100 |
break;
|
101 |
}
|
102 |
}
|
103 |
va_end(ap);
|
104 |
return ret;
|
105 |
}
|
106 |
|
107 |
/*static int
|
108 |
is_int(struct result *res)
|
109 |
{
|
110 |
return 1;
|
111 |
}*/
|
112 |
|
113 |
static int
|
114 |
is_double(struct result *res)
|
115 |
{
|
116 |
return 0;
|
117 |
}
|
118 |
|
119 |
static void
|
120 |
dump(struct result *res)
|
121 |
{
|
122 |
#if 0
|
123 |
char object[res->varlen+1];
|
124 |
char attribute[res->attrnlen+1];
|
125 |
if (res->var)
|
126 |
strncpy(object, res->var, res->varlen);
|
127 |
object[res->varlen]='\0';
|
128 |
if (res->attrn)
|
129 |
strncpy(attribute, res->attrn, res->attrnlen);
|
130 |
attribute[res->attrnlen]='\0';
|
131 |
dbg(0,"type:%s\n", attr_to_name(res->attr.type));
|
132 |
dbg(0,"attribute '%s' from '%s'\n", attribute, object);
|
133 |
#endif
|
134 |
}
|
135 |
|
136 |
static enum attr_type
|
137 |
command_attr_type(struct result *res)
|
138 |
{
|
139 |
char *attrn=g_alloca(sizeof(char)*(res->attrnlen+1));
|
140 |
|
141 |
strncpy(attrn, res->attrn, res->attrnlen);
|
142 |
attrn[res->attrnlen]='\0';
|
143 |
return attr_from_name(attrn);
|
144 |
}
|
145 |
|
146 |
static int
|
147 |
command_object_get_attr(struct context *ctx, struct attr *object, enum attr_type attr_type, struct attr *ret)
|
148 |
{
|
149 |
struct object_func *func=object_func_lookup(object->type);
|
150 |
if (!func || !func->get_attr)
|
151 |
return 0;
|
152 |
return func->get_attr(object->u.data, attr_type, ret, NULL);
|
153 |
}
|
154 |
|
155 |
static void
|
156 |
command_get_attr(struct context *ctx, struct result *res)
|
157 |
{
|
158 |
int result;
|
159 |
enum attr_type attr_type=command_attr_type(res);
|
160 |
result=command_object_get_attr(ctx, &res->attr, attr_type, &res->attr);
|
161 |
if (result) {
|
162 |
res->var=res->attrn;
|
163 |
res->varlen=res->attrnlen;
|
164 |
} else {
|
165 |
res->attr.type=attr_none;
|
166 |
res->var=NULL;
|
167 |
res->varlen=0;
|
168 |
}
|
169 |
res->attrn=NULL;
|
170 |
res->attrnlen=0;
|
171 |
dump(res);
|
172 |
}
|
173 |
|
174 |
static void
|
175 |
command_set_attr(struct context *ctx, struct result *res, struct result *newres)
|
176 |
{
|
177 |
int result=0;
|
178 |
enum attr_type attr_type=command_attr_type(res);
|
179 |
struct object_func *func=object_func_lookup(res->attr.type);
|
180 |
if (!func || !func->set_attr)
|
181 |
return;
|
182 |
newres->attr.type=attr_type;
|
183 |
result=func->set_attr(res->attr.u.data, &newres->attr);
|
184 |
*res=*newres;
|
185 |
}
|
186 |
|
187 |
static void
|
188 |
resolve_object(struct context *ctx, struct result *res)
|
189 |
{
|
190 |
if (res->attr.type == attr_none && res->varlen) {
|
191 |
res->attr=*ctx->attr;
|
192 |
res->attrn=res->var;
|
193 |
res->attrnlen=res->varlen;
|
194 |
res->var=NULL;
|
195 |
res->varlen=0;
|
196 |
}
|
197 |
}
|
198 |
|
199 |
static void
|
200 |
resolve(struct context *ctx, struct result *res, struct attr *parent) //FIXME What is that parent for?
|
201 |
{
|
202 |
resolve_object(ctx, res);
|
203 |
if (res->attrn)
|
204 |
command_get_attr(ctx, res);
|
205 |
}
|
206 |
|
207 |
static double
|
208 |
get_double(struct context *ctx, struct result *res)
|
209 |
{
|
210 |
resolve(ctx, res, NULL);
|
211 |
return res->val;
|
212 |
}
|
213 |
|
214 |
|
215 |
|
216 |
static int
|
217 |
get_int(struct context *ctx, struct result *res)
|
218 |
{
|
219 |
resolve(ctx, res, NULL);
|
220 |
if (res->attr.type == attr_none)
|
221 |
return 0;
|
222 |
if (res->attr.type >= attr_type_int_begin && res->attr.type <= attr_type_int_end) {
|
223 |
return res->attr.u.num;
|
224 |
}
|
225 |
if (res->attr.type >= attr_type_double_begin && res->attr.type <= attr_type_double_end) {
|
226 |
return (int) (*res->attr.u.numd);
|
227 |
}
|
228 |
ctx->error=wrong_type;
|
229 |
return 0;
|
230 |
}
|
231 |
|
232 |
|
233 |
static char *
|
234 |
get_string(struct context *ctx, struct result *res)
|
235 |
{
|
236 |
resolve(ctx, res, NULL);
|
237 |
return attr_to_text(&res->attr, NULL, 0);
|
238 |
}
|
239 |
|
240 |
static void
|
241 |
set_double(struct context *ctx, struct result *res, double val)
|
242 |
{
|
243 |
result_free(res);
|
244 |
res->val=val;
|
245 |
}
|
246 |
|
247 |
static void
|
248 |
set_int(struct context *ctx, struct result *res, int val)
|
249 |
{
|
250 |
result_free(res);
|
251 |
res->attr.type=attr_type_int_begin;
|
252 |
res->attr.u.num=val;
|
253 |
}
|
254 |
|
255 |
|
256 |
static void
|
257 |
eval_value(struct context *ctx, struct result *res) {
|
258 |
const char *op;
|
259 |
int len,dots=0;
|
260 |
op=ctx->expr;
|
261 |
res->varlen=0;
|
262 |
res->var=NULL;
|
263 |
res->attrnlen=0;
|
264 |
res->attrn=NULL;
|
265 |
|
266 |
while (g_ascii_isspace(*op)) {
|
267 |
op++;
|
268 |
}
|
269 |
|
270 |
if ((op[0] >= 'a' && op[0] <= 'z') || op[0] == '_') {
|
271 |
res->attr.type=attr_none;
|
272 |
res->var=op;
|
273 |
for (;;) {
|
274 |
while ((op[0] >= 'a' && op[0] <= 'z') || (op[0] >= '0' && op[0] <= '9') || op[0] == '_') {
|
275 |
res->varlen++;
|
276 |
op++;
|
277 |
}
|
278 |
if (res->varlen == 3 && !strncmp(res->var,"new",3) && op[0] == ' ') {
|
279 |
res->varlen++;
|
280 |
op++;
|
281 |
} else
|
282 |
break;
|
283 |
}
|
284 |
ctx->expr=op;
|
285 |
return;
|
286 |
}
|
287 |
if ((op[0] >= '0' && op[0] <= '9') ||
|
288 |
(op[0] == '.' && op[1] >= '0' && op[1] <= '9') ||
|
289 |
(op[0] == '-' && op[1] >= '0' && op[1] <= '9') ||
|
290 |
(op[0] == '-' && op[1] == '.' && op[2] >= '0' && op[2] <= '9')) {
|
291 |
while ((op[0] >= '0' && op[0] <= '9') || op[0] == '.' || (res->varlen == 0 && op[0] == '-')) {
|
292 |
if (op[0] == '.')
|
293 |
dots++;
|
294 |
if (dots > 1) {
|
295 |
ctx->error=illegal_number_format;
|
296 |
return;
|
297 |
}
|
298 |
res->varlen++;
|
299 |
op++;
|
300 |
}
|
301 |
if (dots) {
|
302 |
res->val = strtod(ctx->expr, NULL);
|
303 |
res->attr.type=attr_type_double_begin;
|
304 |
res->attr.u.numd=&res->val;
|
305 |
} else {
|
306 |
res->attr.type=attr_type_int_begin;
|
307 |
res->attr.u.num=atoi(ctx->expr);
|
308 |
}
|
309 |
ctx->expr=op;
|
310 |
return;
|
311 |
}
|
312 |
if (op[0] == '"') {
|
313 |
do {
|
314 |
op++;
|
315 |
} while (op[0] != '"');
|
316 |
res->attr.type=attr_type_string_begin;
|
317 |
len=op-ctx->expr-1;
|
318 |
res->attr.u.str=g_malloc(len+1);
|
319 |
strncpy(res->attr.u.str, ctx->expr+1, len);
|
320 |
res->attr.u.str[len]='\0';
|
321 |
op++;
|
322 |
ctx->expr=op;
|
323 |
return;
|
324 |
}
|
325 |
ctx->error=illegal_character;
|
326 |
}
|
327 |
|
328 |
static int
|
329 |
get_next_object(struct context *ctx, struct result *res) {
|
330 |
|
331 |
while (*ctx->expr) {
|
332 |
res->varlen = 0;
|
333 |
ctx->error = 0;
|
334 |
|
335 |
eval_value(ctx,res);
|
336 |
|
337 |
if ((res->attr.type == attr_none) && (res->varlen > 0)) {
|
338 |
if (ctx->expr[0] != '.') {
|
339 |
return 1; // 1 means "this is the final object name"
|
340 |
} else {
|
341 |
return 2; // 2 means "there are more object names following" (e.g. we just hit 'vehicle' in 'vehicle.position_speed'
|
342 |
}
|
343 |
}
|
344 |
|
345 |
if (ctx->error) {
|
346 |
// Probably hit an operator
|
347 |
ctx->expr++;
|
348 |
}
|
349 |
}
|
350 |
|
351 |
return 0;
|
352 |
}
|
353 |
|
354 |
static void
|
355 |
eval_brace(struct context *ctx, struct result *res)
|
356 |
{
|
357 |
if (get_op(ctx,0,"(",NULL)) {
|
358 |
eval_comma(ctx, res);
|
359 |
if (ctx->error) return;
|
360 |
if (!get_op(ctx,0,")",NULL))
|
361 |
ctx->error=missing_closing_brace;
|
362 |
return;
|
363 |
}
|
364 |
eval_value(ctx, res);
|
365 |
}
|
366 |
|
367 |
static void
|
368 |
command_call_function(struct context *ctx, struct result *res)
|
369 |
{
|
370 |
struct attr cbl,**list=NULL;
|
371 |
char *function=g_alloca(sizeof(char)*(res->attrnlen+1));
|
372 |
if (res->attrn)
|
373 |
strncpy(function, res->attrn, res->attrnlen);
|
374 |
function[res->attrnlen]='\0';
|
375 |
dbg(1,"function=%s\n", function);
|
376 |
if (ctx->expr[0] != ')') {
|
377 |
list=eval_list(ctx);
|
378 |
if (ctx->error) return;
|
379 |
}
|
380 |
if (!get_op(ctx,0,")",NULL)) {
|
381 |
ctx->error=missing_closing_brace;
|
382 |
return;
|
383 |
}
|
384 |
if (!strcmp(function,"_") && list && list[0] && list[0]->type >= attr_type_string_begin && list[0]->type <= attr_type_string_end) {
|
385 |
res->attr.type=list[0]->type;
|
386 |
res->attr.u.str=g_strdup(gettext(list[0]->u.str));
|
387 |
|
388 |
} else if (!strncmp(function,"new ",4)) {
|
389 |
enum attr_type attr_type=attr_from_name(function+4);
|
390 |
if (attr_type != attr_none) {
|
391 |
struct object_func *func=object_func_lookup(attr_type);
|
392 |
if (func && func->create) {
|
393 |
res->attr.type=attr_type;
|
394 |
res->attr.u.data=func->create(NULL, list);
|
395 |
}
|
396 |
}
|
397 |
} else {
|
398 |
if (command_object_get_attr(ctx, &res->attr, attr_callback_list, &cbl)) {
|
399 |
int valid;
|
400 |
struct attr **out=NULL;
|
401 |
dbg(1,"function call %s from %s\n",function, attr_to_name(res->attr.type));
|
402 |
callback_list_call_attr_4(cbl.u.callback_list, attr_command, function, list, &out, &valid);
|
403 |
if (out && out[0]) {
|
404 |
attr_dup_content(out[0], &res->attr);
|
405 |
attr_list_free(out);
|
406 |
} else
|
407 |
res->attr.type=attr_none;
|
408 |
} else
|
409 |
res->attr.type=attr_none;
|
410 |
}
|
411 |
res->var=NULL;
|
412 |
res->varlen=0;
|
413 |
res->attrn=NULL;
|
414 |
res->attrnlen=0;
|
415 |
}
|
416 |
|
417 |
static void
|
418 |
eval_postfix(struct context *ctx, struct result *res)
|
419 |
{
|
420 |
struct result tmp;
|
421 |
const char *op;
|
422 |
|
423 |
eval_brace(ctx, res);
|
424 |
if (ctx->error) return;
|
425 |
for (;;) {
|
426 |
if (!(op=get_op(ctx,0,"[","(",".",NULL)))
|
427 |
return;
|
428 |
if (op[0] == '.') {
|
429 |
eval_brace(ctx, &tmp);
|
430 |
if (ctx->error) return;
|
431 |
resolve(ctx, res,NULL);
|
432 |
if (ctx->error) return;
|
433 |
res->attrn=tmp.var;
|
434 |
res->attrnlen=tmp.varlen;
|
435 |
dump(res);
|
436 |
} else if (op[0] == '[') {
|
437 |
if (!get_op(ctx,0,"]",NULL)) {
|
438 |
ctx->error=missing_closing_bracket;
|
439 |
return;
|
440 |
}
|
441 |
} else if (op[0] == '(') {
|
442 |
dbg(1,"function call\n");
|
443 |
resolve_object(ctx, res);
|
444 |
command_call_function(ctx, res);
|
445 |
}
|
446 |
}
|
447 |
}
|
448 |
|
449 |
static void
|
450 |
eval_unary(struct context *ctx, struct result *res)
|
451 |
{
|
452 |
const char *op;
|
453 |
op=get_op(ctx,0,"~","!",NULL);
|
454 |
if (op) {
|
455 |
eval_unary(ctx, res);
|
456 |
if (ctx->error) return;
|
457 |
if (op[0] == '~')
|
458 |
set_int(ctx, res, ~get_int(ctx, res));
|
459 |
else
|
460 |
set_int(ctx, res, !get_int(ctx, res));
|
461 |
} else
|
462 |
eval_postfix(ctx, res);
|
463 |
}
|
464 |
|
465 |
static void
|
466 |
eval_multiplicative(struct context *ctx, struct result *res)
|
467 |
{
|
468 |
struct result tmp;
|
469 |
const char *op;
|
470 |
|
471 |
eval_unary(ctx, res);
|
472 |
if (ctx->error) return;
|
473 |
for (;;) {
|
474 |
if (!(op=get_op(ctx,0,"*","/","%",NULL))) return;
|
475 |
eval_unary(ctx, &tmp);
|
476 |
if (ctx->error) return;
|
477 |
if (is_double(res) || is_double(&tmp)) {
|
478 |
if (op[0] == '*')
|
479 |
set_double(ctx, res, get_double(ctx, res) * get_double(ctx, &tmp));
|
480 |
else if (op[0] == '/')
|
481 |
set_double(ctx, res, get_double(ctx, res) / get_double(ctx, &tmp));
|
482 |
else {
|
483 |
ctx->error=invalid_type;
|
484 |
return;
|
485 |
}
|
486 |
} else {
|
487 |
if (op[0] == '*')
|
488 |
set_int(ctx, res, get_int(ctx, res) * get_int(ctx, &tmp));
|
489 |
else if (op[0] == '/')
|
490 |
set_int(ctx, res, get_int(ctx, res) / get_int(ctx, &tmp));
|
491 |
else
|
492 |
set_int(ctx, res, get_int(ctx, res) % get_int(ctx, &tmp));
|
493 |
}
|
494 |
if (ctx->error) return;
|
495 |
}
|
496 |
}
|
497 |
|
498 |
static void
|
499 |
eval_additive(struct context *ctx, struct result *res)
|
500 |
{
|
501 |
struct result tmp;
|
502 |
const char *op;
|
503 |
|
504 |
eval_multiplicative(ctx, res);
|
505 |
if (ctx->error) return;
|
506 |
for (;;) {
|
507 |
if (!(op=get_op(ctx,0,"-","+",NULL))) return;
|
508 |
eval_multiplicative(ctx, &tmp);
|
509 |
if (ctx->error) return;
|
510 |
if (is_double(res) || is_double(&tmp)) {
|
511 |
if (op[0] == '+')
|
512 |
set_double(ctx, res, get_double(ctx, res) + get_double(ctx, &tmp));
|
513 |
else
|
514 |
set_double(ctx, res, get_double(ctx, res) - get_double(ctx, &tmp));
|
515 |
} else {
|
516 |
if (op[0] == '+')
|
517 |
set_int(ctx, res, get_int(ctx, res) + get_int(ctx, &tmp));
|
518 |
else
|
519 |
set_int(ctx, res, get_int(ctx, res) - get_int(ctx, &tmp));
|
520 |
}
|
521 |
if (ctx->error) return;
|
522 |
}
|
523 |
}
|
524 |
|
525 |
static void
|
526 |
eval_equality(struct context *ctx, struct result *res)
|
527 |
{
|
528 |
struct result tmp;
|
529 |
const char *op;
|
530 |
|
531 |
eval_additive(ctx, res);
|
532 |
if (ctx->error) return;
|
533 |
for (;;) {
|
534 |
if (!(op=get_op(ctx,0,"==","!=","<=",">=","<",">",NULL))) return;
|
535 |
eval_additive(ctx, &tmp);
|
536 |
if (ctx->error) return;
|
537 |
|
538 |
switch (op[0]) {
|
539 |
case '=':
|
540 |
set_int(ctx, res, (get_int(ctx, res) == get_int(ctx, &tmp)));
|
541 |
break;
|
542 |
case '!':
|
543 |
set_int(ctx, res, (get_int(ctx, res) != get_int(ctx, &tmp)));
|
544 |
break;
|
545 |
case '<':
|
546 |
if (op[1] == '=') {
|
547 |
set_int(ctx, res, (get_int(ctx, res) <= get_int(ctx, &tmp)));
|
548 |
} else {
|
549 |
set_int(ctx, res, (get_int(ctx, res) < get_int(ctx, &tmp)));
|
550 |
}
|
551 |
break;
|
552 |
case '>':
|
553 |
if (op[1] == '=') {
|
554 |
set_int(ctx, res, (get_int(ctx, res) >= get_int(ctx, &tmp)));
|
555 |
} else {
|
556 |
set_int(ctx, res, (get_int(ctx, res) > get_int(ctx, &tmp)));
|
557 |
}
|
558 |
break;
|
559 |
default:
|
560 |
break;
|
561 |
}
|
562 |
result_free(&tmp);
|
563 |
}
|
564 |
}
|
565 |
|
566 |
|
567 |
static void
|
568 |
eval_bitwise_and(struct context *ctx, struct result *res)
|
569 |
{
|
570 |
struct result tmp;
|
571 |
|
572 |
eval_equality(ctx, res);
|
573 |
if (ctx->error) return;
|
574 |
for (;;) {
|
575 |
if (get_op(ctx,1,"&&",NULL)) return;
|
576 |
if (!get_op(ctx,0,"&",NULL)) return;
|
577 |
eval_equality(ctx, &tmp);
|
578 |
if (ctx->error) return;
|
579 |
set_int(ctx, res, get_int(ctx, res) & get_int(ctx, &tmp));
|
580 |
if (ctx->error) return;
|
581 |
}
|
582 |
}
|
583 |
|
584 |
static void
|
585 |
eval_bitwise_xor(struct context *ctx, struct result *res)
|
586 |
{
|
587 |
struct result tmp;
|
588 |
|
589 |
eval_bitwise_and(ctx, res);
|
590 |
if (ctx->error) return;
|
591 |
for (;;) {
|
592 |
if (!get_op(ctx,0,"^",NULL)) return;
|
593 |
eval_bitwise_and(ctx, &tmp);
|
594 |
if (ctx->error) return;
|
595 |
set_int(ctx, res, get_int(ctx, res) ^ get_int(ctx, &tmp));
|
596 |
if (ctx->error) return;
|
597 |
}
|
598 |
}
|
599 |
|
600 |
static void
|
601 |
eval_bitwise_or(struct context *ctx, struct result *res)
|
602 |
{
|
603 |
struct result tmp;
|
604 |
|
605 |
eval_bitwise_xor(ctx, res);
|
606 |
if (ctx->error) return;
|
607 |
for (;;) {
|
608 |
if (get_op(ctx,1,"||",NULL)) return;
|
609 |
if (!get_op(ctx,0,"|",NULL)) return;
|
610 |
eval_bitwise_xor(ctx, &tmp);
|
611 |
if (ctx->error) return;
|
612 |
set_int(ctx, res, get_int(ctx, res) | get_int(ctx, &tmp));
|
613 |
if (ctx->error) return;
|
614 |
}
|
615 |
}
|
616 |
|
617 |
static void
|
618 |
eval_logical_and(struct context *ctx, struct result *res)
|
619 |
{
|
620 |
struct result tmp;
|
621 |
|
622 |
eval_bitwise_or(ctx, res);
|
623 |
if (ctx->error) return;
|
624 |
for (;;) {
|
625 |
if (!get_op(ctx,0,"&&",NULL)) return;
|
626 |
eval_bitwise_or(ctx, &tmp);
|
627 |
if (ctx->error) return;
|
628 |
set_int(ctx, res, get_int(ctx, res) && get_int(ctx, &tmp));
|
629 |
if (ctx->error) return;
|
630 |
}
|
631 |
}
|
632 |
|
633 |
static void
|
634 |
eval_logical_or(struct context *ctx, struct result *res)
|
635 |
{
|
636 |
struct result tmp;
|
637 |
|
638 |
eval_logical_and(ctx, res);
|
639 |
if (ctx->error) return;
|
640 |
for (;;) {
|
641 |
if (!get_op(ctx,0,"||",NULL)) return;
|
642 |
eval_logical_and(ctx, &tmp);
|
643 |
if (ctx->error) return;
|
644 |
set_int(ctx, res, get_int(ctx, res) || get_int(ctx, &tmp));
|
645 |
if (ctx->error) return;
|
646 |
}
|
647 |
}
|
648 |
|
649 |
static void
|
650 |
eval_conditional(struct context *ctx, struct result *res)
|
651 |
{
|
652 |
struct result tmp;
|
653 |
int cond;
|
654 |
|
655 |
eval_logical_or(ctx, res);
|
656 |
if (ctx->error) return;
|
657 |
if (!get_op(ctx,0,"?",NULL)) return;
|
658 |
cond=!!get_int(ctx, res);
|
659 |
if (ctx->error) return;
|
660 |
eval_logical_or(ctx, &tmp);
|
661 |
if (ctx->error) return;
|
662 |
if (cond)
|
663 |
*res=tmp;
|
664 |
if (!get_op(ctx,0,":",NULL)) {
|
665 |
ctx->error=missing_colon;
|
666 |
return;
|
667 |
}
|
668 |
eval_logical_or(ctx, &tmp);
|
669 |
if (ctx->error) return;
|
670 |
if (!cond)
|
671 |
*res=tmp;
|
672 |
}
|
673 |
|
674 |
/* = *= /= %= += -= >>= <<= &= ^= |= */
|
675 |
|
676 |
static void
|
677 |
eval_assignment(struct context *ctx, struct result *res)
|
678 |
{
|
679 |
struct result tmp;
|
680 |
eval_conditional(ctx, res);
|
681 |
if (ctx->error) return;
|
682 |
if (!get_op(ctx,0,"=",NULL)) return;
|
683 |
eval_conditional(ctx, &tmp);
|
684 |
if (ctx->error) return;
|
685 |
resolve(ctx, &tmp, NULL);
|
686 |
if (ctx->error) return;
|
687 |
resolve_object(ctx, res);
|
688 |
command_set_attr(ctx, res, &tmp);
|
689 |
}
|
690 |
|
691 |
/* , */
|
692 |
static void
|
693 |
eval_comma(struct context *ctx, struct result *res)
|
694 |
{
|
695 |
struct result tmp;
|
696 |
|
697 |
eval_assignment(ctx, res);
|
698 |
if (ctx->error) return;
|
699 |
for (;;) {
|
700 |
if (!get_op(ctx,0,",",NULL)) return;
|
701 |
eval_assignment(ctx, &tmp);
|
702 |
if (ctx->error) return;
|
703 |
*res=tmp;
|
704 |
}
|
705 |
}
|
706 |
|
707 |
static struct attr **
|
708 |
eval_list(struct context *ctx)
|
709 |
{
|
710 |
struct result tmp;
|
711 |
|
712 |
struct attr **ret=NULL;
|
713 |
for (;;) {
|
714 |
eval_assignment(ctx, &tmp);
|
715 |
if (ctx->error) {
|
716 |
attr_list_free(ret);
|
717 |
return NULL;
|
718 |
}
|
719 |
resolve(ctx, &tmp, NULL);
|
720 |
ret=attr_generic_add_attr(ret, &tmp.attr);
|
721 |
if (!get_op(ctx,0,",",NULL)) return ret;
|
722 |
}
|
723 |
}
|
724 |
|
725 |
#if 0
|
726 |
|
727 |
void command(struct attr *attr, char *expr)
|
728 |
{
|
729 |
struct result res;
|
730 |
struct context ctx;
|
731 |
memset(&res, 0, sizeof(res));
|
732 |
memset(&ctx, 0, sizeof(ctx));
|
733 |
ctx.attr=attr;
|
734 |
ctx.error=0;
|
735 |
ctx.expr=expr;
|
736 |
printf("command='%s'\n", expr);
|
737 |
eval_comma(&ctx,&res);
|
738 |
printf("err=%d %s\n", ctx.error, ctx.expr);
|
739 |
dump(&res);
|
740 |
printf("***\n");
|
741 |
resolve(&ctx, &res, NULL);
|
742 |
dump(&res);
|
743 |
printf("%s\n", get_string(&ctx, &res));
|
744 |
}
|
745 |
#endif
|
746 |
|
747 |
static void
|
748 |
command_evaluate_to(struct attr *attr, const char *expr, struct context *ctx, struct result *res)
|
749 |
{
|
750 |
memset(res, 0, sizeof(*res));
|
751 |
memset(ctx, 0, sizeof(*ctx));
|
752 |
ctx->attr=attr;
|
753 |
ctx->expr=expr;
|
754 |
eval_comma(ctx,res);
|
755 |
}
|
756 |
|
757 |
enum attr_type
|
758 |
command_evaluate_to_attr(struct attr *attr, char *expr, int *error, struct attr *ret)
|
759 |
{
|
760 |
struct result res;
|
761 |
struct context ctx;
|
762 |
command_evaluate_to(attr, expr, &ctx, &res);
|
763 |
if (ctx.error)
|
764 |
return attr_none;
|
765 |
resolve_object(&ctx, &res);
|
766 |
*ret=res.attr;
|
767 |
dbg(0,"type %s\n",attr_to_name(command_attr_type(&res)));
|
768 |
return command_attr_type(&res);
|
769 |
}
|
770 |
|
771 |
void
|
772 |
command_evaluate_to_void(struct attr *attr, char *expr, int *error)
|
773 |
{
|
774 |
struct result res;
|
775 |
struct context ctx;
|
776 |
command_evaluate_to(attr, expr, &ctx, &res);
|
777 |
if (!ctx.error)
|
778 |
resolve(&ctx, &res, NULL);
|
779 |
if (error)
|
780 |
*error=ctx.error;
|
781 |
|
782 |
}
|
783 |
|
784 |
char *
|
785 |
command_evaluate_to_string(struct attr *attr, char *expr, int *error)
|
786 |
{
|
787 |
struct result res;
|
788 |
struct context ctx;
|
789 |
char *ret=NULL;
|
790 |
|
791 |
command_evaluate_to(attr, expr, &ctx, &res);
|
792 |
if (!ctx.error)
|
793 |
resolve(&ctx, &res, NULL);
|
794 |
if (!ctx.error)
|
795 |
ret=get_string(&ctx, &res);
|
796 |
if (error)
|
797 |
*error=ctx.error;
|
798 |
if (ctx.error)
|
799 |
return NULL;
|
800 |
else
|
801 |
return ret;
|
802 |
}
|
803 |
|
804 |
int
|
805 |
command_evaluate_to_int(struct attr *attr, char *expr, int *error)
|
806 |
{
|
807 |
struct result res;
|
808 |
struct context ctx;
|
809 |
int ret=0;
|
810 |
|
811 |
command_evaluate_to(attr, expr, &ctx, &res);
|
812 |
if (!ctx.error)
|
813 |
resolve(&ctx, &res, NULL);
|
814 |
if (!ctx.error)
|
815 |
ret=get_int(&ctx, &res);
|
816 |
if (error)
|
817 |
*error=ctx.error;
|
818 |
if (ctx.error)
|
819 |
return 0;
|
820 |
else
|
821 |
return ret;
|
822 |
}
|
823 |
|
824 |
int
|
825 |
command_evaluate_to_boolean(struct attr *attr, const char *expr, int *error)
|
826 |
{
|
827 |
struct result res;
|
828 |
struct context ctx;
|
829 |
int ret=0;
|
830 |
|
831 |
command_evaluate_to(attr, expr, &ctx, &res);
|
832 |
if (!ctx.error)
|
833 |
resolve(&ctx, &res, NULL);
|
834 |
if (!ctx.error) {
|
835 |
if (res.attr.type == attr_none)
|
836 |
ret=0;
|
837 |
else if ((res.attr.type >= attr_type_int_begin && res.attr.type <= attr_type_int_end) ||
|
838 |
(res.attr.type >= attr_type_double_begin && res.attr.type <= attr_type_double_end))
|
839 |
ret=get_int(&ctx, &res);
|
840 |
else
|
841 |
ret=res.attr.u.data != NULL;
|
842 |
}
|
843 |
if (error)
|
844 |
*error=ctx.error;
|
845 |
if (ctx.error)
|
846 |
return 0;
|
847 |
else
|
848 |
return ret;
|
849 |
}
|
850 |
|
851 |
void
|
852 |
command_evaluate(struct attr *attr, const char *expr)
|
853 |
{
|
854 |
/* Once the eval has started we can't rely anymore on the content of
|
855 |
* expr which may be freed when the calling widget is destroyed by a
|
856 |
* subsequent command call. Hence the g_strdup. */
|
857 |
|
858 |
char *expr_dup;
|
859 |
struct result res;
|
860 |
struct context ctx;
|
861 |
memset(&res, 0, sizeof(res));
|
862 |
memset(&ctx, 0, sizeof(ctx));
|
863 |
ctx.attr=attr;
|
864 |
ctx.error=0;
|
865 |
ctx.expr=expr_dup=g_strdup(expr);
|
866 |
for (;;) {
|
867 |
eval_comma(&ctx,&res);
|
868 |
if (ctx.error)
|
869 |
break;
|
870 |
resolve(&ctx, &res, NULL);
|
871 |
if (ctx.error)
|
872 |
break;
|
873 |
if (!get_op(&ctx,0,";",NULL))
|
874 |
break;
|
875 |
}
|
876 |
g_free(expr_dup);
|
877 |
}
|
878 |
|
879 |
#if 0
|
880 |
void
|
881 |
command_interpreter(struct attr *attr)
|
882 |
{
|
883 |
char buffer[4096];
|
884 |
int size;
|
885 |
for (;;) {
|
886 |
size=read(0, buffer, 4095);
|
887 |
buffer[size]='\0';
|
888 |
if (size) {
|
889 |
buffer[size-1]='\0';
|
890 |
}
|
891 |
command(attr, buffer);
|
892 |
}
|
893 |
}
|
894 |
#endif
|
895 |
|
896 |
static void
|
897 |
command_table_call(struct command_table *table, int count, void *data, char *command, struct attr **in, struct attr ***out, int *valid)
|
898 |
{
|
899 |
int i;
|
900 |
for (i = 0 ; i < count ; i++) {
|
901 |
if (!strcmp(command,table->command)) {
|
902 |
if (valid)
|
903 |
*valid=1;
|
904 |
table->func(data, command, in, out);
|
905 |
}
|
906 |
table++;
|
907 |
}
|
908 |
}
|
909 |
|
910 |
void
|
911 |
command_add_table_attr(struct command_table *table, int count, void *data, struct attr *attr)
|
912 |
{
|
913 |
attr->type=attr_callback;
|
914 |
attr->u.callback=callback_new_attr_3(callback_cast(command_table_call),attr_command, table, count, data);
|
915 |
}
|
916 |
|
917 |
void
|
918 |
command_add_table(struct callback_list *cbl, struct command_table *table, int count, void *data)
|
919 |
{
|
920 |
struct attr attr;
|
921 |
command_add_table_attr(table, count, data, &attr);
|
922 |
callback_list_add(cbl, attr.u.callback);
|
923 |
}
|
924 |
|
925 |
void
|
926 |
command_saved_set_cb (struct command_saved *cs, struct callback *cb)
|
927 |
{
|
928 |
cs->cb = cb;
|
929 |
}
|
930 |
|
931 |
int
|
932 |
command_saved_get_int (struct command_saved *cs)
|
933 |
{
|
934 |
return get_int(&cs->ctx, &cs->res);
|
935 |
}
|
936 |
|
937 |
int
|
938 |
command_saved_error (struct command_saved *cs)
|
939 |
{
|
940 |
return cs->error;
|
941 |
}
|
942 |
|
943 |
static void
|
944 |
command_saved_evaluate_idle (struct command_saved *cs)
|
945 |
{
|
946 |
// Only run once at a time
|
947 |
if (cs->idle_ev) {
|
948 |
event_remove_idle(cs->idle_ev);
|
949 |
cs->idle_ev = NULL;
|
950 |
}
|
951 |
|
952 |
command_evaluate_to(&cs->navit, cs->command, &cs->ctx, &cs->res);
|
953 |
|
954 |
if (!cs->ctx.error) {
|
955 |
cs->error = 0;
|
956 |
|
957 |
if (cs->cb) {
|
958 |
callback_call_1(cs->cb, cs);
|
959 |
}
|
960 |
} else {
|
961 |
cs->error = cs->ctx.error;
|
962 |
}
|
963 |
}
|
964 |
|
965 |
static void
|
966 |
command_saved_evaluate(struct command_saved *cs)
|
967 |
{
|
968 |
if (cs->idle_ev) {
|
969 |
// We're already scheduled for reevaluation
|
970 |
return;
|
971 |
}
|
972 |
|
973 |
if (!cs->idle_cb) {
|
974 |
cs->idle_cb = callback_new_1(callback_cast(command_saved_evaluate_idle), cs);
|
975 |
}
|
976 |
|
977 |
cs->idle_ev = event_add_idle(100, cs->idle_cb);
|
978 |
}
|
979 |
|
980 |
static void
|
981 |
command_saved_callbacks_changed(struct command_saved *cs)
|
982 |
{
|
983 |
// For now, we delete each and every callback and then re-create them
|
984 |
int i;
|
985 |
struct object_func *func;
|
986 |
struct attr attr;
|
987 |
|
988 |
if (cs->register_ev) {
|
989 |
event_remove_idle(cs->register_ev);
|
990 |
cs->register_ev = NULL;
|
991 |
}
|
992 |
|
993 |
attr.type = attr_callback;
|
994 |
|
995 |
for (i = 0; i < cs->num_cbs; i++) {
|
996 |
func = object_func_lookup(cs->cbs[i].attr.type);
|
997 |
|
998 |
if (!func->remove_attr) {
|
999 |
dbg(0, "Could not remove command-evaluation callback because remove_attr is missing for type %i!\n", cs->cbs[i].attr.type);
|
1000 |
continue;
|
1001 |
}
|
1002 |
|
1003 |
attr.u.callback = cs->cbs[i].cb;
|
1004 |
|
1005 |
func->remove_attr(cs->cbs[i].attr.u.data, &attr);
|
1006 |
callback_destroy(cs->cbs[i].cb);
|
1007 |
}
|
1008 |
|
1009 |
g_free(cs->cbs);
|
1010 |
cs->cbs = NULL;
|
1011 |
cs->num_cbs = 0;
|
1012 |
|
1013 |
// Now, re-create all the callbacks
|
1014 |
command_register_callbacks(cs);
|
1015 |
}
|
1016 |
|
1017 |
static int
|
1018 |
command_register_callbacks(struct command_saved *cs)
|
1019 |
{
|
1020 |
struct attr prev,cb_attr,attr;
|
1021 |
int status;
|
1022 |
struct object_func *func;
|
1023 |
struct callback *cb;
|
1024 |
|
1025 |
attr = cs->navit;
|
1026 |
cs->ctx.expr = cs->command;
|
1027 |
cs->ctx.attr = &attr;
|
1028 |
prev = cs->navit;
|
1029 |
|
1030 |
while ((status = get_next_object(&cs->ctx, &cs->res)) != 0) {
|
1031 |
resolve(&cs->ctx, &cs->res, NULL);
|
1032 |
|
1033 |
if (cs->ctx.error || (cs->res.attr.type == attr_none)) {
|
1034 |
// We could not resolve an object, perhaps because it has not been created
|
1035 |
return 0;
|
1036 |
}
|
1037 |
|
1038 |
if (prev.type != attr_none) {
|
1039 |
func = object_func_lookup(prev.type);
|
1040 |
|
1041 |
if (func->add_attr) {
|
1042 |
if (status == 2) { // This is not the final attribute name
|
1043 |
cb = callback_new_attr_1(callback_cast(command_saved_callbacks_changed), cs->res.attr.type, (void*)cs);
|
1044 |
attr = cs->res.attr;
|
1045 |
} else if (status == 1) { // This is the final attribute name
|
1046 |
cb = callback_new_attr_1(callback_cast(command_saved_evaluate), cs->res.attr.type, (void*)cs);
|
1047 |
cs->ctx.attr = &cs->navit;
|
1048 |
} else {
|
1049 |
dbg(0, "Error: Strange status returned from get_next_object()\n");
|
1050 |
}
|
1051 |
|
1052 |
cs->num_cbs++;
|
1053 |
cs->cbs = g_realloc(cs->cbs, (sizeof(struct command_saved_cb) * cs->num_cbs));
|
1054 |
cs->cbs[cs->num_cbs-1].cb = cb;
|
1055 |
cs->cbs[cs->num_cbs-1].attr = prev;
|
1056 |
|
1057 |
cb_attr.u.callback = cb;
|
1058 |
cb_attr.type = attr_callback;
|
1059 |
|
1060 |
func->add_attr(prev.u.data, &cb_attr);
|
1061 |
|
1062 |
} else {
|
1063 |
dbg(0, "Could not add callback because add_attr is missing for type %i}n", prev.type);
|
1064 |
}
|
1065 |
}
|
1066 |
|
1067 |
if (status == 2) {
|
1068 |
prev = cs->res.attr;
|
1069 |
} else {
|
1070 |
prev = cs->navit;
|
1071 |
}
|
1072 |
}
|
1073 |
|
1074 |
command_saved_evaluate_idle(cs);
|
1075 |
|
1076 |
return 1;
|
1077 |
}
|
1078 |
|
1079 |
struct command_saved
|
1080 |
*command_saved_new(char *command, struct navit *navit, struct callback *cb)
|
1081 |
{
|
1082 |
struct command_saved *ret;
|
1083 |
|
1084 |
ret = g_new0(struct command_saved, 1);
|
1085 |
ret->command = g_strdup(command);
|
1086 |
ret->navit.u.navit = navit;
|
1087 |
ret->navit.type = attr_navit;
|
1088 |
ret->cb = cb;
|
1089 |
ret->error = not_ready;
|
1090 |
|
1091 |
if (!command_register_callbacks(ret)) {
|
1092 |
// We try this as an idle call again
|
1093 |
ret->register_cb = callback_new_1(callback_cast(command_saved_callbacks_changed), ret);
|
1094 |
ret->register_ev = event_add_idle(300, ret->register_cb);
|
1095 |
}
|
1096 |
|
1097 |
return ret;
|
1098 |
}
|
1099 |
|
1100 |
void
|
1101 |
command_saved_destroy(struct command_saved *cs)
|
1102 |
{
|
1103 |
g_free(cs->command);
|
1104 |
g_free(cs);
|
1105 |
}
|