int printexpr(struct expr *e, char **s, int ssize)
{
if (e->subexpr) {
if (ssize > 0) {
ssize--;
*(*s)++ = '(';
}
ssize = printexpr(e->subexpr->a, s, ssize);
if (ssize > 0) {
ssize--;
*(*s)++ = printop(e->subexpr->op);
}
ssize = printexpr(e->subexpr->b, s, ssize);
if (ssize > 0) {
ssize--;
*(*s)++ = ')';
}
*(*s) = '\0';
return(ssize);
} else {
char buf[40];
int len;
sprintf(buf, "%d", e->val);
len = strlen(buf);
if (len >= ssize)
return(0);
strcpy(*s, buf);
*s += len;
return(ssize - len);
}
}
void
sp_print_document(Gtk::Window& parentWindow, SPDocument *doc)
{
doc->ensureUpToDate();
// Build arena
SPItem *base = doc->getRoot();
// Run print dialog
Inkscape::UI::Dialog::Print printop(doc,base);
Gtk::PrintOperationResult res = printop.run(Gtk::PRINT_OPERATION_ACTION_PRINT_DIALOG, parentWindow);
(void)res; // TODO handle this
}
void
sp_print_document(Gtk::Window& parentWindow, SPDocument *doc)
{
sp_document_ensure_up_to_date(doc);
// Build arena
SPItem *base = SP_ITEM(sp_document_root(doc));
NRArena *arena = NRArena::create();
unsigned int dkey = sp_item_display_key_new(1);
NRArenaItem *root = sp_item_invoke_show(base, arena, dkey, SP_ITEM_SHOW_DISPLAY);
// Run print dialog
Inkscape::UI::Dialog::Print printop(doc,base);
Gtk::PrintOperationResult res = printop.run(Gtk::PRINT_OPERATION_ACTION_PRINT_DIALOG, parentWindow);
(void)res; // TODO handle this
// Release arena
sp_item_invoke_hide(base, dkey);
nr_object_unref((NRObject *) arena);
}
/* Reverse Polish calculator */
main()
{
int type;
double op2;
char s[MAXOP];
while((type=getop(s))!=EOF){
switch(type){
case NUMBER:
push(atof(s));
break;
case IDENTIFIER:
dealWithName(s);
case '+':
push(pop()+pop());
break;
case '*':
push(pop()*pop());
break;
case '-':
op2=pop();
push(pop()-op2);
break;
case '/':
op2=pop();
if(op2!=0.0)
push(pop()/op2);
else
printf("error:zero divisor\n");
break;
case '%':
op2=pop();
if(op2)
push(fmod(pop(),op2));
else
printf("error:zero divisor\n");
break;
case '\n':
printf("\t%.8g\n",pop());
break;
/* print the top element and not push */
case 'p':
printop();
break;
/* copy the top element and print it */
case 'c':
copy();
break;
/* print the stack */
case 'P':
printstack();
break;
/* swap the top two element */
case 's':
swap();
break;
case 'C':
clear();
break;
default:
printf("error:unknown command %s\n",s);
break;
}
}
return 0;
}
