Add functions to retrieve and dispose layout dimension type list

Author: jimmysoda

source/pdal/capi/Forward.h

@@ -18,24 +18,30 @@
 #ifdef __cplusplus
 #include <memory>
 #include <set>
+#include <vector>
 
 namespace pdal
 {
+	struct DimType;
 	class PipelineExecutor;
 	class PointView;
 
 	using PointViewPtr = std::shared_ptr<PointView>;
+	using DimTypeList = std::vector<DimType>;
 
 	namespace capi
 	{
 		class PointViewIterator;
 		using Pipeline = std::unique_ptr<pdal::PipelineExecutor>;
 		using PointView = pdal::PointViewPtr;
+		using DimTypeList = std::unique_ptr<pdal::DimTypeList>;
 	}
 }
 
 #endif /* __cplusplus */
 
+/// A pointer to a C++ pdal::capi::PDALDimTypeList
+typedef void* PDALDimTypeListPtr;
 
 /// A pointer to a C++ pdal::capi::Pipeline object
 typedef void* PDALPipelinePtr;

source/pdal/capi/PointLayout.cpp

@@ -12,7 +12,28 @@ namespace pdal
 {
 	namespace capi
 	{
-	
+		PDALDimTypeListPtr PDALGetPointLayoutDimTypes(PDALPointLayoutPtr layout)
+		{
+			PDALDimTypeListPtr types = NULL;
+			pdal::PointLayoutPtr nativeLayout = reinterpret_cast<pdal::PointLayoutPtr>(layout);
+
+			if (nativeLayout)
+			{
+				types = new pdal::capi::DimTypeList(new pdal::DimTypeList(nativeLayout->dimTypes()));
+			}
+
+			return types;
+		}
+
+		void PDALDisposeDimTypeList(PDALDimTypeListPtr types)
+		{
+			if (types)
+			{
+				pdal::capi::DimTypeList *ptr = reinterpret_cast<pdal::capi::DimTypeList *>(types);
+				delete ptr;
+			}
+		}
+
 		size_t PDALGetDimSize(PDALPointLayoutPtr layout, const char *name)
 		{
 			pdal::PointLayoutPtr nativeLayout = reinterpret_cast<pdal::PointLayoutPtr>(layout);
@@ -29,11 +50,11 @@ namespace pdal
 			{
 				pdal::DimType type = nativeLayout->findDimType(name);
 				pdal::DimTypeList dims = nativeLayout->dimTypes();
-				std::string name = pdal::Dimension::name(type.m_id);
+				std::string nameString = pdal::Dimension::name(type.m_id);
 
 				for (auto dim : dims)
 				{
-					if (name == pdal::Dimension::name(dim.m_id))
+					if (nameString == pdal::Dimension::name(dim.m_id))
 					{
 						break;
 					}

source/pdal/capi/PointLayout.h

@@ -16,7 +16,9 @@ namespace pdal
 		extern "C"
 		{
 #endif
-			//! PDAL_C_API PDALDimTypeList PDALGetPointLayoutDimTypes(PDALPointLayoutPtr layout);
+			PDAL_C_API PDALDimTypeListPtr PDALGetPointLayoutDimTypes(PDALPointLayoutPtr layout);
+
+			PDAL_C_API void PDALDisposeDimTypeList(PDALDimTypeListPtr types);
 
 			//! PDAL_C_API PDALDimType PDALFindDimType(PDALPointLayoutPtr layout, const char *name);