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#include "..\lib\collection.h"
struct _History {
collection items;
int active;
dword add();
dword back();
dword forward();
dword current();
} History;
dword _History::add(dword in)
{
if (!strcmp(in, items.get(active-1))) return 0;
items.count = active;
items.add(in);
active++;
return 1;
}
dword _History::back()
{
if (active==1) return 0;
active--;
return items.get(active-1);
}
dword _History::forward()
{
if (active==items.count) return 0;
active++;
return items.get(active-1);
}
dword _History::current()
{
return items.get(active-1);
}