Nexrad File Factory

wxdata/include/scwx/wsr88d/ar2v_file.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <scwx/wsr88d/nexrad_file.hpp>
 #include <scwx/wsr88d/rda/digital_radar_data.hpp>
 #include <scwx/wsr88d/rda/volume_coverage_pattern_data.hpp>
 
@@ -19,7 +20,7 @@ class Ar2vFileImpl;
  * the Archive II/User, Document Number 2620010H, published by the WSR-88D Radar
  * Operations Center.
  */
-class Ar2vFile
+class Ar2vFile : public NexradFile
 {
 public:
    explicit Ar2vFile();
@@ -46,6 +47,7 @@ public:
                     std::chrono::system_clock::time_point time) const;
 
    bool LoadFile(const std::string& filename);
+   bool LoadData(std::istream& is);
 
 private:
    std::unique_ptr<Ar2vFileImpl> p;

wxdata/include/scwx/wsr88d/level3_file.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <scwx/wsr88d/nexrad_file.hpp>
 #include <scwx/wsr88d/rpg/level3_message.hpp>
 
 #include <memory>
@@ -12,7 +13,7 @@ namespace wsr88d
 
 class Level3FileImpl;
 
-class Level3File
+class Level3File : public NexradFile
 {
 public:
    explicit Level3File();

wxdata/include/scwx/wsr88d/nexrad_file.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <memory>
+#include <string>
+
+namespace scwx
+{
+namespace wsr88d
+{
+
+class NexradFileImpl;
+
+class NexradFile
+{
+protected:
+   explicit NexradFile();
+
+   NexradFile(const NexradFile&) = delete;
+   NexradFile& operator=(const NexradFile&) = delete;
+
+   NexradFile(NexradFile&&) noexcept;
+   NexradFile& operator=(NexradFile&&) noexcept;
+
+public:
+   virtual ~NexradFile();
+
+   virtual bool LoadFile(const std::string& filename) = 0;
+   virtual bool LoadData(std::istream& is)            = 0;
+
+private:
+   std::unique_ptr<NexradFileImpl> p;
+};
+
+} // namespace wsr88d
+} // namespace scwx

wxdata/include/scwx/wsr88d/nexrad_file_factory.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <scwx/wsr88d/nexrad_file.hpp>
+
+namespace scwx
+{
+namespace wsr88d
+{
+
+class NexradFileFactory
+{
+private:
+   explicit NexradFileFactory() = delete;
+   ~NexradFileFactory()         = delete;
+
+   NexradFileFactory(const NexradFileFactory&) = delete;
+   NexradFileFactory& operator=(const NexradFileFactory&) = delete;
+
+   NexradFileFactory(NexradFileFactory&&) noexcept = delete;
+   NexradFileFactory& operator=(NexradFileFactory&&) noexcept = delete;
+
+public:
+   static std::shared_ptr<NexradFile> Create(const std::string& filename);
+   static std::shared_ptr<NexradFile> Create(std::istream& is);
+};
+
+} // namespace wsr88d
+} // namespace scwx