-
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
+#include <glib.h>
#include "item.h"
+#include "xmlconfig.h"
#include "main.h"
#include "navit.h"
#include "vehicle.h"
#include "debug.h"
#include "callback.h"
#include "command.h"
+#include "event.h"
+#include "navit_nls.h"
/*
-gui.fullscreen()
+gui.fullscreen=!gui.fullscreen
gui.menu()
gui.get_data()
zoom_in()
int varlen;
char *attrn;
int attrnlen;
+ int allocated;
};
struct context {
struct result res;
};
+struct command_saved_cb {
+ struct callback *cb;
+ struct attr attr;
+};
+
+struct command_saved {
+ struct context ctx;
+ struct result res;
+ char *command; // The command string itself
+ struct event_idle *idle_ev; // Event to update this command
+ struct callback *idle_cb;
+ struct callback *register_cb; // Callback to register all the callbacks
+ struct event_idle *register_ev; // Idle event to register all the callbacks
+ struct attr navit;
+ int num_cbs;
+ struct command_saved_cb *cbs; // List of callbacks for this saved command
+ struct callback *cb; // Callback that should be called when we re-evaluate
+ int error;
+};
+
enum error {
- no_error=0,missing_closing_brace, missing_colon, wrong_type, illegal_number_format, illegal_character, missing_closing_bracket, invalid_type
+ no_error=0,missing_closing_brace, missing_colon, wrong_type, illegal_number_format, illegal_character, missing_closing_bracket, invalid_type, not_ready
};
static void eval_comma(struct context *ctx, struct result *res);
static struct attr ** eval_list(struct context *ctx);
+static void
+result_free(struct result *res)
+{
+}
+
+static int command_register_callbacks(struct command_saved *cs);
+
static char *
get_op(struct context *ctx, int test, ...)
{
char *op,*ret=NULL;
va_list ap;
+
+ while (g_ascii_isspace(*ctx->expr)) {
+ ctx->expr++;
+ }
+
va_start(ap, test);
while ((op = va_arg(ap, char *))) {
if (!strncmp(ctx->expr, op, strlen(op))) {
return ret;
}
-static int
+/*static int
is_int(struct result *res)
{
return 1;
-}
+}*/
static int
is_double(struct result *res)
static void
dump(struct result *res)
{
+#if 0
char object[res->varlen+1];
char attribute[res->attrnlen+1];
if (res->var)
attribute[res->attrnlen]='\0';
dbg(0,"type:%s\n", attr_to_name(res->attr.type));
dbg(0,"attribute '%s' from '%s'\n", attribute, object);
+#endif
}
static enum attr_type
}
static int
-command_object_get_attr(struct attr *object, enum attr_type attr_type, struct attr *ret)
-{
- switch (object->type) {
- case attr_gui:
- return gui_get_attr(object->u.gui, attr_type, ret, NULL);
- case attr_navit:
- return navit_get_attr(object->u.navit, attr_type, ret, NULL);
- case attr_speech:
- return speech_get_attr(object->u.speech, attr_type, ret, NULL);
- case attr_vehicle:
- return vehicle_get_attr(object->u.vehicle, attr_type, ret, NULL);
- default:
+command_object_get_attr(struct context *ctx, struct attr *object, enum attr_type attr_type, struct attr *ret)
+{
+ struct object_func *func=object_func_lookup(object->type);
+ if (!func || !func->get_attr)
return 0;
- }
+ return func->get_attr(object->u.data, attr_type, ret, NULL);
}
static void
{
int result;
enum attr_type attr_type=command_attr_type(res);
- result=command_object_get_attr(&res->attr, attr_type, &res->attr);
+ result=command_object_get_attr(ctx, &res->attr, attr_type, &res->attr);
if (result) {
res->var=res->attrn;
res->varlen=res->attrnlen;
{
int result=0;
enum attr_type attr_type=command_attr_type(res);
+ struct object_func *func=object_func_lookup(res->attr.type);
+ if (!func || !func->set_attr)
+ return;
newres->attr.type=attr_type;
- switch (res->attr.type) {
- case attr_navit:
- result=navit_set_attr(res->attr.u.navit, &newres->attr);
- break;
- case attr_speech:
- result=speech_set_attr(res->attr.u.speech, &newres->attr);
- break;
- default:
- break;
- }
+ result=func->set_attr(res->attr.u.data, &newres->attr);
*res=*newres;
}
}
static void
-resolve(struct context *ctx, struct result *res, struct attr *parent)
+resolve(struct context *ctx, struct result *res, struct attr *parent) //FIXME What is that parent for?
{
resolve_object(ctx, res);
- if (res->attr.type >= attr_type_object_begin && res->attr.type <= attr_type_object_end) {
- if (res->attrn)
- command_get_attr(ctx, res);
- return;
- }
+ if (res->attrn)
+ command_get_attr(ctx, res);
}
static double
static void
set_double(struct context *ctx, struct result *res, double val)
{
+ result_free(res);
res->val=val;
}
static void
set_int(struct context *ctx, struct result *res, int val)
{
+ result_free(res);
res->attr.type=attr_type_int_begin;
res->attr.u.num=val;
}
static void
eval_value(struct context *ctx, struct result *res) {
char *op;
- int dots=0;
+ int len,dots=0;
op=ctx->expr;
res->varlen=0;
res->var=NULL;
res->attrnlen=0;
res->attrn=NULL;
- if (op[0] >= 'a' && op[0] <= 'z') {
+
+ while (g_ascii_isspace(*op)) {
+ op++;
+ }
+
+ if ((op[0] >= 'a' && op[0] <= 'z') || op[0] == '_') {
res->attr.type=attr_none;
res->var=op;
- while ((op[0] >= 'a' && op[0] <= 'z') || op[0] == '_') {
- res->varlen++;
- op++;
+ for (;;) {
+ while ((op[0] >= 'a' && op[0] <= 'z') || op[0] == '_') {
+ res->varlen++;
+ op++;
+ }
+ if (res->varlen == 3 && !strncmp(res->var,"new",3) && op[0] == ' ') {
+ res->varlen++;
+ op++;
+ } else
+ break;
}
ctx->expr=op;
return;
}
if ((op[0] >= '0' && op[0] <= '9') ||
- (op[0] == '.' && op[1] >= '0' && op[1] <= '9')) {
- while ((op[0] >= '0' && op[0] <= '9') || op[0] == '.') {
+ (op[0] == '.' && op[1] >= '0' && op[1] <= '9') ||
+ (op[0] == '-' && op[1] >= '0' && op[1] <= '9') ||
+ (op[0] == '-' && op[1] == '.' && op[2] >= '0' && op[2] <= '9')) {
+ while ((op[0] >= '0' && op[0] <= '9') || op[0] == '.' || (res->varlen == 0 && op[0] == '-')) {
if (op[0] == '.')
dots++;
if (dots > 1) {
ctx->expr=op;
return;
}
+ if (op[0] == '"') {
+ do {
+ op++;
+ } while (op[0] != '"');
+ res->attr.type=attr_type_string_begin;
+ len=op-ctx->expr-1;
+ res->attr.u.str=g_malloc(len+1);
+ strncpy(res->attr.u.str, ctx->expr+1, len);
+ res->attr.u.str[len]='\0';
+ op++;
+ ctx->expr=op;
+ return;
+ }
ctx->error=illegal_character;
}
+static int
+get_next_object(struct context *ctx, struct result *res) {
+
+ while (*ctx->expr) {
+ res->varlen = 0;
+ ctx->error = 0;
+
+ eval_value(ctx,res);
+
+ if ((res->attr.type == attr_none) && (res->varlen > 0)) {
+ if (ctx->expr[0] != '.') {
+ return 1; // 1 means "this is the final object name"
+ } else {
+ return 2; // 2 means "there are more object names following" (e.g. we just hit 'vehicle' in 'vehicle.position_speed'
+ }
+ }
+
+ if (ctx->error) {
+ // Probably hit an operator
+ ctx->expr++;
+ }
+ }
+
+ return 0;
+}
+
static void
eval_brace(struct context *ctx, struct result *res)
{
if (res->attrn)
strncpy(function, res->attrn, res->attrnlen);
function[res->attrnlen]='\0';
- dbg(0,"function=%s\n", function);
+ dbg(1,"function=%s\n", function);
if (ctx->expr[0] != ')') {
list=eval_list(ctx);
if (ctx->error) return;
ctx->error=missing_closing_brace;
return;
}
- if (command_object_get_attr(&res->attr, attr_callback_list, &cbl)) {
- int valid;
- dbg(0,"function call %s from %s\n",function, attr_to_name(res->attr.type));
- callback_list_call_attr_4(cbl.u.callback_list, attr_command, function, list, NULL, &valid);
+ if (!strcmp(function,"_") && list && list[0] && list[0]->type >= attr_type_string_begin && list[0]->type <= attr_type_string_end) {
+ res->attr.type=list[0]->type;
+ res->attr.u.str=g_strdup(gettext(list[0]->u.str));
+
+ } if (!strncmp(function,"new ",4)) {
+ enum attr_type attr_type=attr_from_name(function+4);
+ if (attr_type != attr_none) {
+ struct object_func *func=object_func_lookup(attr_type);
+ if (func && func->new) {
+ res->attr.type=attr_type;
+ res->attr.u.data=func->new(NULL, list);
+ }
+ }
+ } else {
+ if (command_object_get_attr(ctx, &res->attr, attr_callback_list, &cbl)) {
+ int valid;
+ dbg(1,"function call %s from %s\n",function, attr_to_name(res->attr.type));
+ callback_list_call_attr_4(cbl.u.callback_list, attr_command, function, list, NULL, &valid);
+ }
+ res->attr.type=attr_none;
}
res->var=NULL;
res->varlen=0;
res->attrn=NULL;
res->attrnlen=0;
- res->attr.type=attr_none;
}
static void
return;
}
} else if (op[0] == '(') {
- dbg(0,"function call\n");
+ dbg(1,"function call\n");
resolve_object(ctx, res);
command_call_function(ctx, res);
}
eval_additive(ctx, res);
if (ctx->error) return;
for (;;) {
- if (!(op=get_op(ctx,0,"==","!=",NULL))) return;
+ if (!(op=get_op(ctx,0,"==","!=","<=",">=","<",">",NULL))) return;
eval_additive(ctx, &tmp);
if (ctx->error) return;
- if (op[0] == '=')
+
+ switch (op[0]) {
+ case '=':
set_int(ctx, res, (get_int(ctx, res) == get_int(ctx, &tmp)));
- else
+ break;
+ case '!':
set_int(ctx, res, (get_int(ctx, res) != get_int(ctx, &tmp)));
+ break;
+ case '<':
+ if (op[1] == '=') {
+ set_int(ctx, res, (get_int(ctx, res) <= get_int(ctx, &tmp)));
+ } else {
+ set_int(ctx, res, (get_int(ctx, res) < get_int(ctx, &tmp)));
+ }
+ break;
+ case '>':
+ if (op[1] == '=') {
+ set_int(ctx, res, (get_int(ctx, res) >= get_int(ctx, &tmp)));
+ } else {
+ set_int(ctx, res, (get_int(ctx, res) > get_int(ctx, &tmp)));
+ }
+ break;
+ default:
+ break;
+ }
+ result_free(&tmp);
}
}
if (!get_op(ctx,0,"=",NULL)) return;
eval_conditional(ctx, &tmp);
if (ctx->error) return;
+ resolve(ctx, &tmp, NULL);
+ if (ctx->error) return;
resolve_object(ctx, res);
command_set_attr(ctx, res, &tmp);
}
{
struct result tmp;
- eval_assignment(ctx, res);
+ eval_assignment(ctx, res);
if (ctx->error) return;
for (;;) {
if (!get_op(ctx,0,",",NULL)) return;
attr_list_free(ret);
return NULL;
}
+ resolve(ctx, &tmp, NULL);
ret=attr_generic_add_attr(ret, &tmp.attr);
if (!get_op(ctx,0,",",NULL)) return ret;
}
}
#endif
+static void
+command_evaluate_to(struct attr *attr, char *expr, struct context *ctx, struct result *res)
+{
+ memset(res, 0, sizeof(*res));
+ memset(ctx, 0, sizeof(*ctx));
+ ctx->attr=attr;
+ ctx->expr=expr;
+ eval_comma(ctx,res);
+}
+
void
-command_evaluate_to_void(struct attr *attr, char *expr)
+command_evaluate_to_void(struct attr *attr, char *expr, int **error)
{
struct result res;
struct context ctx;
- memset(&res, 0, sizeof(res));
- memset(&ctx, 0, sizeof(ctx));
- ctx.attr=attr;
- ctx.error=0;
- ctx.expr=expr;
- eval_comma(&ctx,&res);
- resolve(&ctx, &res, NULL);
+ command_evaluate_to(attr, expr, &ctx, &res);
+ if (!ctx.error)
+ resolve(&ctx, &res, NULL);
+ if (error)
+ *error=&ctx.error;
+
+}
+
+char *
+command_evaluate_to_string(struct attr *attr, char *expr, int **error)
+{
+ struct result res;
+ struct context ctx;
+ char *ret=NULL;
+
+ command_evaluate_to(attr, expr, &ctx, &res);
+ if (!ctx.error)
+ resolve(&ctx, &res, NULL);
+ if (!ctx.error)
+ ret=get_string(&ctx, &res);
+ if (error)
+ *error=&ctx.error;
+ if (ctx.error)
+ return NULL;
+ else
+ return ret;
+}
+
+int
+command_evaluate_to_int(struct attr *attr, char *expr, int **error)
+{
+ struct result res;
+ struct context ctx;
+ int ret=0;
+
+ command_evaluate_to(attr, expr, &ctx, &res);
+ if (!ctx.error)
+ resolve(&ctx, &res, NULL);
+ if (!ctx.error)
+ ret=get_int(&ctx, &res);
+ if (error)
+ *error=&ctx.error;
+ if (ctx.error)
+ return 0;
+ else
+ return ret;
+}
+
+int
+command_evaluate_to_boolean(struct attr *attr, char *expr, int **error)
+{
+ struct result res;
+ struct context ctx;
+ int ret=0;
+
+ command_evaluate_to(attr, expr, &ctx, &res);
+ if (!ctx.error)
+ resolve(&ctx, &res, NULL);
+ if (!ctx.error) {
+ if (res.attr.type == attr_none)
+ ret=0;
+ else if ((res.attr.type >= attr_type_int_begin && res.attr.type <= attr_type_int_end) ||
+ (res.attr.type >= attr_type_double_begin && res.attr.type <= attr_type_double_end))
+ ret=get_int(&ctx, &res);
+ else
+ ret=res.attr.u.data != NULL;
+ }
+ if (error)
+ *error=&ctx.error;
+ if (ctx.error)
+ return 0;
+ else
+ return ret;
}
void
}
void
+command_add_table_attr(struct command_table *table, int count, void *data, struct attr *attr)
+{
+ attr->type=attr_callback;
+ attr->u.callback=callback_new_attr_3(callback_cast(command_table_call),attr_command, table, count, data);
+}
+
+void
command_add_table(struct callback_list *cbl, struct command_table *table, int count, void *data)
{
- struct callback *cb=callback_new_attr_3(callback_cast(command_table_call),attr_command, table, count, data);
- callback_list_add(cbl, cb);
+ struct attr attr;
+ command_add_table_attr(table, count, data, &attr);
+ callback_list_add(cbl, attr.u.callback);
+}
+
+void
+command_saved_set_cb (struct command_saved *cs, struct callback *cb)
+{
+ cs->cb = cb;
+}
+
+int
+command_saved_get_int (struct command_saved *cs)
+{
+ return get_int(&cs->ctx, &cs->res);
+}
+
+int
+command_saved_error (struct command_saved *cs)
+{
+ return cs->error;
+}
+
+static void
+command_saved_evaluate_idle (struct command_saved *cs)
+{
+ // Only run once at a time
+ if (cs->idle_ev) {
+ event_remove_idle(cs->idle_ev);
+ cs->idle_ev = NULL;
+ }
+
+ command_evaluate_to(&cs->navit, cs->command, &cs->ctx, &cs->res);
+
+ if (!cs->ctx.error) {
+ cs->error = 0;
+
+ if (cs->cb) {
+ callback_call_1(cs->cb, cs);
+ }
+ } else {
+ cs->error = cs->ctx.error;
+ }
+}
+
+static void
+command_saved_evaluate(struct command_saved *cs)
+{
+ if (cs->idle_ev) {
+ // We're already scheduled for reevaluation
+ return;
+ }
+
+ if (!cs->idle_cb) {
+ cs->idle_cb = callback_new_1(callback_cast(command_saved_evaluate_idle), cs);
+ }
+
+ cs->idle_ev = event_add_idle(100, cs->idle_cb);
+}
+
+static void
+command_saved_callbacks_changed(struct command_saved *cs)
+{
+ // For now, we delete each and every callback and then re-create them
+ int i;
+ struct object_func *func;
+ struct attr attr;
+
+ if (cs->register_ev) {
+ event_remove_idle(cs->register_ev);
+ cs->register_ev = NULL;
+ }
+
+ attr.type = attr_callback;
+
+ for (i = 0; i < cs->num_cbs; i++) {
+ func = object_func_lookup(cs->cbs[i].attr.type);
+
+ if (!func->remove_attr) {
+ dbg(0, "Could not remove command-evaluation callback because remove_attr is missing for type %i!\n", cs->cbs[i].attr.type);
+ continue;
+ }
+
+ attr.u.callback = cs->cbs[i].cb;
+
+ func->remove_attr(cs->cbs[i].attr.u.data, &attr);
+ callback_destroy(cs->cbs[i].cb);
+ }
+
+ g_free(cs->cbs);
+ cs->cbs = NULL;
+ cs->num_cbs = 0;
+
+ // Now, re-create all the callbacks
+ command_register_callbacks(cs);
+}
+
+static int
+command_register_callbacks(struct command_saved *cs)
+{
+ struct attr prev,cb_attr,attr;
+ int status;
+ struct object_func *func;
+ struct callback *cb;
+
+ attr = cs->navit;
+ cs->ctx.expr = cs->command;
+ cs->ctx.attr = &attr;
+ prev = cs->navit;
+
+ while ((status = get_next_object(&cs->ctx, &cs->res)) != 0) {
+ resolve(&cs->ctx, &cs->res, NULL);
+
+ if (cs->ctx.error || (cs->res.attr.type == attr_none)) {
+ // We could not resolve an object, perhaps because it has not been created
+ return 0;
+ }
+
+ if (prev.type != attr_none) {
+ func = object_func_lookup(prev.type);
+
+ if (func->add_attr) {
+ if (status == 2) { // This is not the final attribute name
+ cb = callback_new_attr_1(callback_cast(command_saved_callbacks_changed), cs->res.attr.type, (void*)cs);
+ attr = cs->res.attr;
+ } else if (status == 1) { // This is the final attribute name
+ cb = callback_new_attr_1(callback_cast(command_saved_evaluate), cs->res.attr.type, (void*)cs);
+ cs->ctx.attr = &cs->navit;
+ } else {
+ dbg(0, "Error: Strange status returned from get_next_object()\n");
+ }
+
+ cs->num_cbs++;
+ cs->cbs = g_realloc(cs->cbs, (sizeof(struct command_saved_cb) * cs->num_cbs));
+ cs->cbs[cs->num_cbs-1].cb = cb;
+ cs->cbs[cs->num_cbs-1].attr = prev;
+
+ cb_attr.u.callback = cb;
+ cb_attr.type = attr_callback;
+
+ func->add_attr(prev.u.data, &cb_attr);
+
+ } else {
+ dbg(0, "Could not add callback because add_attr is missing for type %i}n", prev.type);
+ }
+ }
+
+ if (status == 2) {
+ prev = cs->res.attr;
+ } else {
+ prev = cs->navit;
+ }
+ }
+
+ command_saved_evaluate_idle(cs);
+
+ return 1;
+}
+
+struct command_saved
+*command_saved_new(char *command, struct navit *navit, struct callback *cb)
+{
+ struct command_saved *ret;
+
+ ret = g_new0(struct command_saved, 1);
+ ret->command = g_strdup(command);
+ ret->navit.u.navit = navit;
+ ret->navit.type = attr_navit;
+ ret->cb = cb;
+ ret->error = not_ready;
+
+ if (!command_register_callbacks(ret)) {
+ // We try this as an idle call again
+ ret->register_cb = callback_new_1(callback_cast(command_saved_callbacks_changed), ret);
+ ret->register_ev = event_add_idle(300, ret->register_cb);
+ }
+
+ return ret;
}
+void
+command_saved_destroy(struct command_saved *cs)
+{
+ g_free(cs->command);
+ g_free(cs);
+}
projects / navit-package / blobdiff