Implement db_get_property()

binding.cc

@@ -386,6 +386,10 @@ struct Database {
     db_->CompactRange(start, end);
   }
 
+  void GetProperty (const leveldb::Slice& property, std::string* value) {
+    db_->GetProperty(property, value);
+  }
+
   const leveldb::Snapshot* NewSnapshot () {
     return db_->GetSnapshot();
   }
@@ -1160,6 +1164,25 @@ NAPI_METHOD(db_compact_range) {
   NAPI_RETURN_UNDEFINED();
 }
 
+/**
+ * Get a property from a database.
+ */
+NAPI_METHOD(db_get_property) {
+  NAPI_ARGV(2);
+  NAPI_DB_CONTEXT();
+
+  leveldb::Slice property = ToSlice(env, argv[1]);
+
+  std::string value;
+  database->GetProperty(property, &value);
+
+  napi_value result;
+  napi_create_string_utf8(env, value.data(), value.size(), &result);
+
+  // TODO clean up property slice
+  return result;
+}
+
 /**
  * Worker class for destroying a database.
  */
@@ -1900,6 +1923,7 @@ NAPI_INIT() {
   NAPI_EXPORT_FUNCTION(db_del);
   NAPI_EXPORT_FUNCTION(db_approximate_size);
   NAPI_EXPORT_FUNCTION(db_compact_range);
+  NAPI_EXPORT_FUNCTION(db_get_property);
 
   NAPI_EXPORT_FUNCTION(destroy_db);
   NAPI_EXPORT_FUNCTION(repair_db);

leveldown.js

@@ -98,7 +98,7 @@ LevelDOWN.prototype.getProperty = function (property) {
     throw new Error('getProperty() requires a valid `property` argument')
   }
 
-  return this.binding.getProperty(property)
+  return binding.db_get_property(this.context, property)
 }
 
 LevelDOWN.prototype._iterator = function (options) {