v0.2.54..v0.2.55 changeset MapUtils.h

diff --git a/hoot-core/src/main/cpp/hoot/core/elements/MapUtils.h b/hoot-core/src/main/cpp/hoot/core/elements/MapUtils.h
new file mode 100644
index 0000000..c45d115
--- /dev/null
+++ b/hoot-core/src/main/cpp/hoot/core/elements/MapUtils.h
@@ -0,0 +1,78 @@
+/*
+ * This file is part of Hootenanny.
+ *
+ * Hootenanny is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --------------------------------------------------------------------
+ *
+ * The following copyright notices are generated automatically. If you
+ * have a new notice to add, please use the format:
+ * " * @copyright Copyright ..."
+ * This will properly maintain the copyright information. DigitalGlobe
+ * copyrights will be updated automatically.
+ *
+ * @copyright Copyright (C) 2020 DigitalGlobe (http://www.digitalglobe.com/)
+ */
+
+#ifndef MAP_UTILS_H
+#define MAP_UTILS_H
+
+// Hoot
+#include <hoot/core/elements/OsmMap.h>
+#include <hoot/core/criterion/ElementCriterion.h>
+
+namespace hoot
+{
+
+/**
+ * Various utilities for working with maps that should be kept out of OsmMap to avoid circular
+ * dependencies
+ */
+class MapUtils
+{
+
+public:
+
+  /**
+   * Returns a subset of elements from a map filtered by a criterion
+   *
+   * @param map map to copy elements from
+   * @param filter filter to apply to the map
+   * @return a copied subset map
+   */
+  static OsmMapPtr getMapSubset(const ConstOsmMapPtr& map, const ElementCriterionPtr& filter);
+
+  /**
+   * Determines if a map contains only nodes that are not way nodes
+   *
+   * @param map the map to examine
+   * @return true if the map is made up of non-way node points only; false otherwise
+   * @todo probably duplicating CriterionUtils::constainSatisfyingElements
+   */
+  static bool mapIsPointsOnly(const OsmMapPtr& map);
+
+  /**
+   * Splits a map into two separate maps according to element status
+   *
+   * @param sourceMap the map to split
+   * @param unknown1Map the map to output with Unknown1 status
+   * @param unknown2Map the map to output with Unknown2 status
+   */
+  static void splitMapByStatus(OsmMapPtr& sourceMap, OsmMapPtr& unknown1Map,
+                               OsmMapPtr& unknown2Map);
+};
+
+}
+
+#endif // MAP_UTILS_H