void set(const char *name, const char *value)
{
node *n = tree.search(name);
if (!n)
{
// This variable does not currently exist. Create a node for it.
n = new node;
n->name = new char [strlen(name) + 2];
strcpy(n->name + 1, name);
tree.insert(n);
}
else
// Delete current value.
delete [] n->value;
if (value)
{
if (strlen(value) == 0)
value = 0;
}
if (value)
{
n->value = new char [strlen(value) + 1];
strcpy(n->value, value);
}
else
{
// Variable is being set to empty string, which deletes it.
tree.remove(name);
delete [] n->name;
delete n;
}
}
const char *get(const char *name)
{
node *n = tree.search(name);
return(n ? n->value : "");
}