symbolizer *find_symbolizer()
{
for(mapnik::rule::symbolizers::iterator it = rule_->begin();
it != rule_->end();
++it) {
if (symbolizer *sym = boost::get<symbolizer>(&(*it)))
return(sym);
}
BOOST_ASSERT(it==end);
rule_->append(init_symbolizer<symbolizer>());
symbolizer *sym = boost::get<symbolizer>(& (*(--rule_->end())) );
return sym;
}
static
bool
my_cypher(std::string const& value_in, boost::optional<std::string>& value_out)
{
size_t const cypher = 'A' - '1';
value_out = value_in;
for (std::string::iterator it = value_out->begin(); it != value_out->end(); ++it)
(*it < 'A') ? (*it += cypher) : (*it -= cypher);
return true;
}