24 speech.active=!speech.active
27 osd[type=="xxx"].active=0;osd[type=="yyy"].active=0
48 struct command_saved_cb {
53 struct command_saved {
56 char *command; // The command string itself
57 struct event_idle *idle_ev; // Event to update this command
58 struct callback *idle_cb;
59 struct callback *register_cb; // Callback to register all the callbacks
60 struct event_idle *register_ev; // Idle event to register all the callbacks
63 struct command_saved_cb *cbs; // List of callbacks for this saved command
64 struct callback *cb; // Callback that should be called when we re-evaluate
69 no_error=0,missing_closing_brace, missing_colon, wrong_type, illegal_number_format, illegal_character, missing_closing_bracket, invalid_type, not_ready
72 static void eval_comma(struct context *ctx, struct result *res);
73 static struct attr ** eval_list(struct context *ctx);
76 result_free(struct result *res)
80 static int command_register_callbacks(struct command_saved *cs);
83 get_op(struct context *ctx, int test, ...)
88 while (g_ascii_isspace(*ctx->expr)) {
93 while ((op = va_arg(ap, char *))) {
94 if (!strncmp(ctx->expr, op, strlen(op))) {
97 ctx->expr+=strlen(op);
106 is_int(struct result *res)
112 is_double(struct result *res)
118 dump(struct result *res)
120 char object[res->varlen+1];
121 char attribute[res->attrnlen+1];
123 strncpy(object, res->var, res->varlen);
124 object[res->varlen]='\0';
126 strncpy(attribute, res->attrn, res->attrnlen);
127 attribute[res->attrnlen]='\0';
128 dbg(0,"type:%s\n", attr_to_name(res->attr.type));
129 dbg(0,"attribute '%s' from '%s'\n", attribute, object);
132 static enum attr_type
133 command_attr_type(struct result *res)
135 char attrn[res->attrnlen+1];
137 strncpy(attrn, res->attrn, res->attrnlen);
138 attrn[res->attrnlen]='\0';
139 return attr_from_name(attrn);
143 command_object_get_attr(struct context *ctx, struct attr *object, enum attr_type attr_type, struct attr *ret)
145 struct object_func *func=object_func_lookup(object->type);
146 if (!func || !func->get_attr)
148 return func->get_attr(object->u.data, attr_type, ret, NULL);
152 command_get_attr(struct context *ctx, struct result *res)
155 enum attr_type attr_type=command_attr_type(res);
156 result=command_object_get_attr(ctx, &res->attr, attr_type, &res->attr);
159 res->varlen=res->attrnlen;
161 res->attr.type=attr_none;
171 command_set_attr(struct context *ctx, struct result *res, struct result *newres)
174 enum attr_type attr_type=command_attr_type(res);
175 struct object_func *func=object_func_lookup(res->attr.type);
176 if (!func || !func->set_attr)
178 newres->attr.type=attr_type;
179 result=func->set_attr(res->attr.u.data, &newres->attr);
184 resolve_object(struct context *ctx, struct result *res)
186 if (res->attr.type == attr_none && res->varlen) {
187 res->attr=*ctx->attr;
189 res->attrnlen=res->varlen;
196 resolve(struct context *ctx, struct result *res, struct attr *parent) //FIXME What is that parent for?
198 resolve_object(ctx, res);
199 if (res->attr.type >= attr_type_object_begin && res->attr.type <= attr_type_object_end) {
201 command_get_attr(ctx, res);
207 get_double(struct context *ctx, struct result *res)
209 resolve(ctx, res, NULL);
216 get_int(struct context *ctx, struct result *res)
218 resolve(ctx, res, NULL);
219 if (res->attr.type == attr_none)
221 if (res->attr.type >= attr_type_int_begin && res->attr.type <= attr_type_int_end) {
222 return res->attr.u.num;
224 if (res->attr.type >= attr_type_double_begin && res->attr.type <= attr_type_double_end) {
225 return (int) (*res->attr.u.numd);
227 ctx->error=wrong_type;
233 get_string(struct context *ctx, struct result *res)
235 resolve(ctx, res, NULL);
236 return attr_to_text(&res->attr, NULL, 0);
240 set_double(struct context *ctx, struct result *res, double val)
247 set_int(struct context *ctx, struct result *res, int val)
250 res->attr.type=attr_type_int_begin;
256 eval_value(struct context *ctx, struct result *res) {
265 while (g_ascii_isspace(*op)) {
269 if (op[0] >= 'a' && op[0] <= 'z') {
270 res->attr.type=attr_none;
272 while ((op[0] >= 'a' && op[0] <= 'z') || op[0] == '_') {
279 if ((op[0] >= '0' && op[0] <= '9') ||
280 (op[0] == '.' && op[1] >= '0' && op[1] <= '9') ||
281 (op[0] == '-' && op[1] >= '0' && op[1] <= '9') ||
282 (op[0] == '-' && op[1] == '.' && op[2] >= '0' && op[2] <= '9')) {
283 while ((op[0] >= '0' && op[0] <= '9') || op[0] == '.' || (res->varlen == 0 && op[0] == '-')) {
287 ctx->error=illegal_number_format;
294 res->val = strtod(ctx->expr, NULL);
295 res->attr.type=attr_type_double_begin;
296 res->attr.u.numd=&res->val;
298 res->attr.type=attr_type_int_begin;
299 res->attr.u.num=atoi(ctx->expr);
307 } while (op[0] != '"');
308 res->attr.type=attr_type_string_begin;
310 res->attr.u.str=g_malloc(len+1);
311 strncpy(res->attr.u.str, ctx->expr+1, len);
312 res->attr.u.str[len]='\0';
317 ctx->error=illegal_character;
321 get_next_object(struct context *ctx, struct result *res) {
329 if ((res->attr.type == attr_none) && (res->varlen > 0)) {
330 if (ctx->expr[0] != '.') {
331 return 1; // 1 means "this is the final object name"
333 return 2; // 2 means "there are more object names following" (e.g. we just hit 'vehicle' in 'vehicle.position_speed'
338 // Probably hit an operator
347 eval_brace(struct context *ctx, struct result *res)
349 if (get_op(ctx,0,"(",NULL)) {
350 eval_comma(ctx, res);
351 if (ctx->error) return;
352 if (!get_op(ctx,0,")",NULL))
353 ctx->error=missing_closing_brace;
356 eval_value(ctx, res);
360 command_call_function(struct context *ctx, struct result *res)
362 struct attr cbl,**list=NULL;
363 char function[res->attrnlen+1];
365 strncpy(function, res->attrn, res->attrnlen);
366 function[res->attrnlen]='\0';
367 dbg(0,"function=%s\n", function);
368 if (ctx->expr[0] != ')') {
370 if (ctx->error) return;
372 if (!get_op(ctx,0,")",NULL)) {
373 ctx->error=missing_closing_brace;
376 if (command_object_get_attr(ctx, &res->attr, attr_callback_list, &cbl)) {
378 dbg(0,"function call %s from %s\n",function, attr_to_name(res->attr.type));
379 callback_list_call_attr_4(cbl.u.callback_list, attr_command, function, list, NULL, &valid);
385 res->attr.type=attr_none;
389 eval_postfix(struct context *ctx, struct result *res)
394 eval_brace(ctx, res);
395 if (ctx->error) return;
397 if (!(op=get_op(ctx,0,"[","(",".",NULL)))
400 eval_brace(ctx, &tmp);
401 if (ctx->error) return;
402 resolve(ctx, res,NULL);
403 if (ctx->error) return;
405 res->attrnlen=tmp.varlen;
407 } else if (op[0] == '[') {
408 if (!get_op(ctx,0,"]",NULL)) {
409 ctx->error=missing_closing_bracket;
412 } else if (op[0] == '(') {
413 dbg(0,"function call\n");
414 resolve_object(ctx, res);
415 command_call_function(ctx, res);
421 eval_unary(struct context *ctx, struct result *res)
424 op=get_op(ctx,0,"~","!",NULL);
426 eval_unary(ctx, res);
427 if (ctx->error) return;
429 set_int(ctx, res, ~get_int(ctx, res));
431 set_int(ctx, res, !get_int(ctx, res));
433 eval_postfix(ctx, res);
437 eval_multiplicative(struct context *ctx, struct result *res)
442 eval_unary(ctx, res);
443 if (ctx->error) return;
445 if (!(op=get_op(ctx,0,"*","/","%",NULL))) return;
446 eval_unary(ctx, &tmp);
447 if (ctx->error) return;
448 if (is_double(res) || is_double(&tmp)) {
450 set_double(ctx, res, get_double(ctx, res) * get_double(ctx, &tmp));
451 else if (op[0] == '/')
452 set_double(ctx, res, get_double(ctx, res) / get_double(ctx, &tmp));
454 ctx->error=invalid_type;
459 set_int(ctx, res, get_int(ctx, res) * get_int(ctx, &tmp));
460 else if (op[0] == '/')
461 set_int(ctx, res, get_int(ctx, res) / get_int(ctx, &tmp));
463 set_int(ctx, res, get_int(ctx, res) % get_int(ctx, &tmp));
465 if (ctx->error) return;
470 eval_additive(struct context *ctx, struct result *res)
475 eval_multiplicative(ctx, res);
476 if (ctx->error) return;
478 if (!(op=get_op(ctx,0,"-","+",NULL))) return;
479 eval_multiplicative(ctx, &tmp);
480 if (ctx->error) return;
481 if (is_double(res) || is_double(&tmp)) {
483 set_double(ctx, res, get_double(ctx, res) + get_double(ctx, &tmp));
485 set_double(ctx, res, get_double(ctx, res) - get_double(ctx, &tmp));
488 set_int(ctx, res, get_int(ctx, res) + get_int(ctx, &tmp));
490 set_int(ctx, res, get_int(ctx, res) - get_int(ctx, &tmp));
492 if (ctx->error) return;
497 eval_equality(struct context *ctx, struct result *res)
502 eval_additive(ctx, res);
503 if (ctx->error) return;
505 if (!(op=get_op(ctx,0,"==","!=","<=",">=","<",">",NULL))) return;
506 eval_additive(ctx, &tmp);
507 if (ctx->error) return;
511 set_int(ctx, res, (get_int(ctx, res) == get_int(ctx, &tmp)));
514 set_int(ctx, res, (get_int(ctx, res) != get_int(ctx, &tmp)));
518 set_int(ctx, res, (get_int(ctx, res) <= get_int(ctx, &tmp)));
520 set_int(ctx, res, (get_int(ctx, res) < get_int(ctx, &tmp)));
525 set_int(ctx, res, (get_int(ctx, res) >= get_int(ctx, &tmp)));
527 set_int(ctx, res, (get_int(ctx, res) > get_int(ctx, &tmp)));
539 eval_bitwise_and(struct context *ctx, struct result *res)
543 eval_equality(ctx, res);
544 if (ctx->error) return;
546 if (get_op(ctx,1,"&&",NULL)) return;
547 if (!get_op(ctx,0,"&",NULL)) return;
548 eval_equality(ctx, &tmp);
549 if (ctx->error) return;
550 set_int(ctx, res, get_int(ctx, res) & get_int(ctx, &tmp));
551 if (ctx->error) return;
556 eval_bitwise_xor(struct context *ctx, struct result *res)
560 eval_bitwise_and(ctx, res);
561 if (ctx->error) return;
563 if (!get_op(ctx,0,"^",NULL)) return;
564 eval_bitwise_and(ctx, &tmp);
565 if (ctx->error) return;
566 set_int(ctx, res, get_int(ctx, res) ^ get_int(ctx, &tmp));
567 if (ctx->error) return;
572 eval_bitwise_or(struct context *ctx, struct result *res)
576 eval_bitwise_xor(ctx, res);
577 if (ctx->error) return;
579 if (get_op(ctx,1,"||",NULL)) return;
580 if (!get_op(ctx,0,"|",NULL)) return;
581 eval_bitwise_xor(ctx, &tmp);
582 if (ctx->error) return;
583 set_int(ctx, res, get_int(ctx, res) | get_int(ctx, &tmp));
584 if (ctx->error) return;
589 eval_logical_and(struct context *ctx, struct result *res)
593 eval_bitwise_or(ctx, res);
594 if (ctx->error) return;
596 if (!get_op(ctx,0,"&&",NULL)) return;
597 eval_bitwise_or(ctx, &tmp);
598 if (ctx->error) return;
599 set_int(ctx, res, get_int(ctx, res) && get_int(ctx, &tmp));
600 if (ctx->error) return;
605 eval_logical_or(struct context *ctx, struct result *res)
609 eval_logical_and(ctx, res);
610 if (ctx->error) return;
612 if (!get_op(ctx,0,"||",NULL)) return;
613 eval_logical_and(ctx, &tmp);
614 if (ctx->error) return;
615 set_int(ctx, res, get_int(ctx, res) || get_int(ctx, &tmp));
616 if (ctx->error) return;
621 eval_conditional(struct context *ctx, struct result *res)
626 eval_logical_or(ctx, res);
627 if (ctx->error) return;
628 if (!get_op(ctx,0,"?",NULL)) return;
629 cond=!!get_int(ctx, res);
630 if (ctx->error) return;
631 eval_logical_or(ctx, &tmp);
632 if (ctx->error) return;
635 if (!get_op(ctx,0,":",NULL)) {
636 ctx->error=missing_colon;
639 eval_logical_or(ctx, &tmp);
640 if (ctx->error) return;
645 /* = *= /= %= += -= >>= <<= &= ^= |= */
648 eval_assignment(struct context *ctx, struct result *res)
651 eval_conditional(ctx, res);
652 if (ctx->error) return;
653 if (!get_op(ctx,0,"=",NULL)) return;
654 eval_conditional(ctx, &tmp);
655 if (ctx->error) return;
656 resolve_object(ctx, res);
657 command_set_attr(ctx, res, &tmp);
662 eval_comma(struct context *ctx, struct result *res)
666 eval_assignment(ctx, res);
667 if (ctx->error) return;
669 if (!get_op(ctx,0,",",NULL)) return;
670 eval_assignment(ctx, &tmp);
671 if (ctx->error) return;
676 static struct attr **
677 eval_list(struct context *ctx)
681 struct attr **ret=NULL;
683 eval_assignment(ctx, &tmp);
688 ret=attr_generic_add_attr(ret, &tmp.attr);
689 if (!get_op(ctx,0,",",NULL)) return ret;
695 void command(struct attr *attr, char *expr)
699 memset(&res, 0, sizeof(res));
700 memset(&ctx, 0, sizeof(ctx));
704 printf("command='%s'\n", expr);
705 eval_comma(&ctx,&res);
706 printf("err=%d %s\n", ctx.error, ctx.expr);
709 resolve(&ctx, &res, NULL);
711 printf("%s\n", get_string(&ctx, &res));
716 command_evaluate_to(struct attr *attr, char *expr, struct context *ctx, struct result *res)
718 memset(res, 0, sizeof(*res));
719 memset(ctx, 0, sizeof(*ctx));
726 command_evaluate_to_void(struct attr *attr, char *expr, int **error)
730 command_evaluate_to(attr, expr, &ctx, &res);
732 resolve(&ctx, &res, NULL);
739 command_evaluate_to_string(struct attr *attr, char *expr, int **error)
745 command_evaluate_to(attr, expr, &ctx, &res);
747 ret=get_string(&ctx, &res);
757 command_evaluate_to_int(struct attr *attr, char *expr, int **error)
763 command_evaluate_to(attr, expr, &ctx, &res);
765 ret=get_int(&ctx, &res);
775 command_evaluate(struct attr *attr, char *expr)
779 memset(&res, 0, sizeof(res));
780 memset(&ctx, 0, sizeof(ctx));
785 eval_comma(&ctx,&res);
788 resolve(&ctx, &res, NULL);
791 if (!get_op(&ctx,0,";",NULL)) return;
797 command_interpreter(struct attr *attr)
802 size=read(0, buffer, 4095);
807 command(attr, buffer);
813 command_table_call(struct command_table *table, int count, void *data, char *command, struct attr **in, struct attr ***out, int *valid)
816 for (i = 0 ; i < count ; i++) {
817 if (!strcmp(command,table->command)) {
820 table->func(data, command, in, out);
827 command_add_table_attr(struct command_table *table, int count, void *data, struct attr *attr)
829 attr->type=attr_callback;
830 attr->u.callback=callback_new_attr_3(callback_cast(command_table_call),attr_command, table, count, data);
834 command_add_table(struct callback_list *cbl, struct command_table *table, int count, void *data)
837 command_add_table_attr(table, count, data, &attr);
838 callback_list_add(cbl, attr.u.callback);
842 command_saved_set_cb (struct command_saved *cs, struct callback *cb)
848 command_saved_get_int (struct command_saved *cs)
850 return get_int(&cs->ctx, &cs->res);
854 command_saved_error (struct command_saved *cs)
860 command_saved_evaluate_idle (struct command_saved *cs)
862 // Only run once at a time
864 event_remove_idle(cs->idle_ev);
868 command_evaluate_to(&cs->navit, cs->command, &cs->ctx, &cs->res);
870 if (!cs->ctx.error) {
874 callback_call_1(cs->cb, cs);
877 cs->error = cs->ctx.error;
882 command_saved_evaluate(struct command_saved *cs)
885 // We're already scheduled for reevaluation
890 cs->idle_cb = callback_new_1(callback_cast(command_saved_evaluate_idle), cs);
893 cs->idle_ev = event_add_idle(100, cs->idle_cb);
897 command_saved_callbacks_changed(struct command_saved *cs)
899 // For now, we delete each and every callback and then re-create them
901 struct object_func *func;
904 if (cs->register_ev) {
905 event_remove_idle(cs->register_ev);
906 cs->register_ev = NULL;
909 attr.type = attr_callback;
911 for (i = 0; i < cs->num_cbs; i++) {
912 func = object_func_lookup(cs->cbs[i].attr.type);
914 if (!func->remove_attr) {
915 dbg(0, "Could not remove command-evaluation callback because remove_attr is missing for type %i!\n", cs->cbs[i].attr.type);
919 attr.u.callback = cs->cbs[i].cb;
921 func->remove_attr(cs->cbs[i].attr.u.data, &attr);
922 callback_destroy(cs->cbs[i].cb);
929 // Now, re-create all the callbacks
930 command_register_callbacks(cs);
934 command_register_callbacks(struct command_saved *cs)
936 struct attr prev,cb_attr,attr;
938 struct object_func *func;
942 cs->ctx.expr = cs->command;
943 cs->ctx.attr = &attr;
946 while ((status = get_next_object(&cs->ctx, &cs->res)) != 0) {
947 resolve(&cs->ctx, &cs->res, NULL);
949 if (cs->ctx.error || (cs->res.attr.type == attr_none)) {
950 // We could not resolve an object, perhaps because it has not been created
954 if (prev.type != attr_none) {
955 func = object_func_lookup(prev.type);
957 if (func->add_attr) {
958 if (status == 2) { // This is not the final attribute name
959 cb = callback_new_attr_1(callback_cast(command_saved_callbacks_changed), cs->res.attr.type, (void*)cs);
961 } else if (status == 1) { // This is the final attribute name
962 cb = callback_new_attr_1(callback_cast(command_saved_evaluate), cs->res.attr.type, (void*)cs);
963 cs->ctx.attr = &cs->navit;
965 dbg(0, "Error: Strange status returned from get_next_object()\n");
969 cs->cbs = g_realloc(cs->cbs, (sizeof(struct command_saved_cb) * cs->num_cbs));
970 cs->cbs[cs->num_cbs-1].cb = cb;
971 cs->cbs[cs->num_cbs-1].attr = prev;
973 cb_attr.u.callback = cb;
974 cb_attr.type = attr_callback;
976 func->add_attr(prev.u.data, &cb_attr);
979 dbg(0, "Could not add callback because add_attr is missing for type %i}n", prev.type);
990 command_saved_evaluate_idle(cs);
996 *command_saved_new(char *command, struct navit *navit, struct callback *cb)
998 struct command_saved *ret;
1000 ret = g_new0(struct command_saved, 1);
1001 ret->command = g_strdup(command);
1002 ret->navit.u.navit = navit;
1003 ret->navit.type = attr_navit;
1005 ret->error = not_ready;
1007 if (!command_register_callbacks(ret)) {
1008 // We try this as an idle call again
1009 ret->register_cb = callback_new_1(callback_cast(command_saved_callbacks_changed), ret);
1010 ret->register_ev = event_add_idle(300, ret->register_cb);
1017 command_saved_destroy(struct command_saved *cs)
1019 g_free(cs->command);