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Implement and test attribute prefix stripping in overzoom

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Erica Fischer
2024-09-19 13:02:56 -07:00
parent 5ec93a12b8
commit 3456fa75ed
2 changed files with 37 additions and 4 deletions
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clip.cpp
+24 -3
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@@ -1239,6 +1239,27 @@ static void preserve_numeric(const std::string &key, const mvt_value &val, /
}
}
static bool should_keep(std::string const &key,
std::set<std::string> const &keep,
std::set<std::string> const &exclude,
std::vector<std::string> const &exclude_prefix) {
if (keep.size() == 0 || keep.find(key) != keep.end()) {
if (exclude.find(key) != exclude.end()) {
return false;
}
for (auto const &prefix : exclude_prefix) {
if (starts_with(key, prefix)) {
return false;
}
}
return true;
}
return false;
}
static void feature_out(std::vector<tile_feature> const &features, mvt_layer &outlayer,
std::set<std::string> const &keep,
std::set<std::string> const &exclude,
@@ -1289,7 +1310,7 @@ static void feature_out(std::vector<tile_feature> const &features, mvt_layer &ou
full_values.push_back(mvt_value_to_serial_val(features[0].layer->values[features[0].tags[i + 1]]));
} else {
// otherwise just tag it directly onto the output feature
if (keep.size() == 0 || keep.find(features[0].layer->keys[features[0].tags[i]]) != keep.end()) {
if (should_keep(features[0].layer->keys[features[0].tags[i]], keep, exclude, exclude_prefix)) {
outlayer.tag(outfeature, features[0].layer->keys[features[0].tags[i]], features[0].layer->values[features[0].tags[i + 1]]);
}
}
@@ -1329,7 +1350,7 @@ static void feature_out(std::vector<tile_feature> const &features, mvt_layer &ou
// and tag them onto the output feature
for (size_t i = 0; i < full_keys.size(); i++) {
if (keep.size() == 0 || keep.find(full_keys[i]) != keep.end()) {
if (should_keep(full_keys[i], keep, exclude, exclude_prefix)) {
outlayer.tag(outfeature, full_keys[i], stringified_to_mvt_value(full_values[i].type, full_values[i].s.c_str(), tile_stringpool));
}
}
@@ -1339,7 +1360,7 @@ static void feature_out(std::vector<tile_feature> const &features, mvt_layer &ou
}
} else {
for (size_t i = 0; i + 1 < features[0].tags.size(); i += 2) {
if (keep.size() == 0 || keep.find(features[0].layer->keys[features[0].tags[i]]) != keep.end()) {
if (should_keep(features[0].layer->keys[features[0].tags[i]], keep, exclude, exclude_prefix)) {
outlayer.tag(outfeature, features[0].layer->keys[features[0].tags[i]], features[0].layer->values[features[0].tags[i + 1]]);
}
}