Simplify material file pointer acrobatics

apps/niftest/niftest.cpp

@@ -8,7 +8,7 @@
 #include <utility>
 #include <vector>
 
-#include <components/bgsm/reader.hpp>
+#include <components/bgsm/file.hpp>
 #include <components/files/configurationmanager.hpp>
 #include <components/files/constrainedfilestream.hpp>
 #include <components/files/conversion.hpp>
@@ -88,11 +88,10 @@ void readFile(
         }
         else
         {
-            Bgsm::Reader reader;
             if (vfs != nullptr)
-                reader.parse(vfs->get(pathStr));
+                Bgsm::parse(vfs->get(pathStr));
             else
-                reader.parse(Files::openConstrainedFileStream(fullPath));
+                Bgsm::parse(Files::openConstrainedFileStream(fullPath));
         }
     }
     catch (std::exception& e)

components/CMakeLists.txt

@@ -108,7 +108,7 @@ add_component_dir (settings
     )
 
 add_component_dir (bgsm
-    reader stream file
+    stream file
     )
 
 add_component_dir (bsa

components/bgsm/file.cpp

@@ -1,9 +1,37 @@
 #include "file.hpp"
 
+#include <array>
+#include <stdexcept>
+
 #include "stream.hpp"
 
 namespace Bgsm
 {
+    MaterialFilePtr parse(Files::IStreamPtr&& inputStream)
+    {
+        std::shared_ptr<Bgsm::MaterialFile> file;
+        BGSMStream stream(std::move(inputStream));
+
+        std::array<char, 4> signature;
+        stream.readArray(signature);
+        std::string shaderType(signature.data(), 4);
+        if (shaderType == "BGEM")
+        {
+            file = std::make_shared<BGEMFile>();
+            file->mShaderType = Bgsm::ShaderType::Effect;
+        }
+        else if (shaderType == "BGSM")
+        {
+            file = std::make_shared<BGSMFile>();
+            file->mShaderType = Bgsm::ShaderType::Lighting;
+        }
+        else
+            throw std::runtime_error("Invalid material file");
+
+        file->read(stream);
+        return file;
+    }
+
     void MaterialFile::read(BGSMStream& stream)
     {
         stream.read(mVersion);

components/bgsm/file.hpp

@@ -10,6 +10,8 @@
 #include <osg/Vec3f>
 #include <osg/Vec4f>
 
+#include <components/files/istreamptr.hpp>
+
 namespace Bgsm
 {
     class BGSMStream;
@@ -160,5 +162,6 @@ namespace Bgsm
     };
 
     using MaterialFilePtr = std::shared_ptr<const Bgsm::MaterialFile>;
+    MaterialFilePtr parse(Files::IStreamPtr&& stream);
 }
 #endif

components/bgsm/reader.cpp

@@ -1,33 +0,0 @@
-#include "reader.hpp"
-
-#include <array>
-#include <stdexcept>
-#include <string>
-
-#include "stream.hpp"
-
-namespace Bgsm
-{
-    void Reader::parse(Files::IStreamPtr&& inputStream)
-    {
-        BGSMStream stream(std::move(inputStream));
-
-        std::array<char, 4> signature;
-        stream.readArray(signature);
-        std::string shaderType(signature.data(), 4);
-        if (shaderType == "BGEM")
-        {
-            mFile = std::make_unique<BGEMFile>();
-            mFile->mShaderType = Bgsm::ShaderType::Effect;
-        }
-        else if (shaderType == "BGSM")
-        {
-            mFile = std::make_unique<BGSMFile>();
-            mFile->mShaderType = Bgsm::ShaderType::Lighting;
-        }
-        else
-            throw std::runtime_error("Invalid material file");
-
-        mFile->read(stream);
-    }
-}

components/bgsm/reader.hpp

@@ -1,22 +0,0 @@
-#ifndef OPENMW_COMPONENTS_BGSM_READER_HPP
-#define OPENMW_COMPONENTS_BGSM_READER_HPP
-
-#include <memory>
-
-#include <components/files/istreamptr.hpp>
-
-#include "file.hpp"
-
-namespace Bgsm
-{
-    class Reader
-    {
-        std::unique_ptr<MaterialFile> mFile;
-
-    public:
-        void parse(Files::IStreamPtr&& stream);
-
-        std::unique_ptr<MaterialFile> getFile() { return std::move(mFile); }
-    };
-}
-#endif

components/resource/bgsmfilemanager.cpp

@@ -2,7 +2,6 @@
 
 #include <osg/Object>
 
-#include <components/bgsm/reader.hpp>
 #include <components/vfs/manager.hpp>
 
 #include "objectcache.hpp"
@@ -41,9 +40,7 @@ namespace Resource
             return static_cast<BgsmFileHolder*>(obj.get())->mBgsmFile;
         else
         {
-            Bgsm::Reader reader;
+            Bgsm::MaterialFilePtr file = Bgsm::parse(mVFS->get(name));
-            reader.parse(mVFS->get(name));
-            Bgsm::MaterialFilePtr file = reader.getFile();
             obj = new BgsmFileHolder(file);
             mCache->addEntryToObjectCache(name.value(), obj);
             return file;