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use feature call back to stuff features into container

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This commit is contained in:
artemp 2015-01-30 11:02:53 +01:00
parent c6e681d244
commit f8decad01e
1 changed files with 21 additions and 2 deletions
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23
plugins/input/geobuf/geobuf_datasource.cpp
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@ -121,10 +121,29 @@ geobuf_datasource::geobuf_datasource(parameters const& params)
parse_geobuf(geobuf.data(), geobuf.size());
}
namespace {
template <typename T>
struct push_feature
{
using features_container = T;
push_feature(features_container & features)
: features_(features) {}
void operator() (mapnik::feature_ptr const& feature)
{
features_.push_back(feature);
}
features_container & features_;
};
}
void geobuf_datasource::parse_geobuf(std::uint8_t const* data, std::size_t size)
{
mapnik::util::geobuf buf(data, size);
buf.read(features_);
using push_feature_callback = push_feature<std::vector<mapnik::feature_ptr>>;
push_feature_callback callback(features_);
mapnik::util::geobuf<push_feature_callback> buf(data, size, callback);
buf.read();
std::cerr << "Num of features = " << features_.size() << std::endl;
#if BOOST_VERSION >= 105600
using values_container = std::vector< std::pair<box_type, std::pair<std::size_t, std::size_t>>>;