Move getFileExtension to common header and use instead of repeating same code

apps/openmw/mwgui/loadingscreen.cpp

@@ -13,6 +13,7 @@
 #include <MyGUI_Gui.h>
 #include <MyGUI_TextBox.h>
 
+#include <components/misc/pathhelpers.hpp>
 #include <components/misc/rng.hpp>
 #include <components/debug/debuglog.hpp>
 #include <components/myguiplatform/myguitexture.hpp>
@@ -66,23 +67,15 @@ namespace MWGui
 
     void LoadingScreen::findSplashScreens()
     {
-        /* priority given to the left */
-        const std::array<std::string, 7> supported_extensions {{".tga", ".dds", ".ktx", ".png", ".bmp", ".jpeg", ".jpg"}};
+        auto isSupportedExtension = [](const std::string_view& ext) {
+            static const std::array<std::string, 7> supported_extensions{ {"tga", "dds", "ktx", "png", "bmp", "jpeg", "jpg"} };
+            return !ext.empty() && std::find(supported_extensions.begin(), supported_extensions.end(), ext) != supported_extensions.end();
+        };
 
         for (const auto& name : mResourceSystem->getVFS()->getRecursiveDirectoryIterator("Splash/"))
         {
-            size_t pos = name.find_last_of('.');
-            if (pos != std::string::npos)
-            {
-                for (auto const& extension : supported_extensions)
-                {
-                    if (name.compare(pos, name.size() - pos, extension) == 0)
-                    {
-                        mSplashScreens.push_back(name);
-                        break;  /* based on priority */
-                    }
-                }
-            }
+            if (isSupportedExtension(Misc::getFileExtension(name)))
+                mSplashScreens.push_back(name);
         }
         if (mSplashScreens.empty())
             Log(Debug::Warning) << "Warning: no splash screens found!";

apps/openmw/mwrender/animation.cpp

@@ -17,6 +17,7 @@
 #include <components/resource/keyframemanager.hpp>
 
 #include <components/misc/constants.hpp>
+#include <components/misc/pathhelpers.hpp>
 #include <components/misc/resourcehelpers.hpp>
 
 #include <components/sceneutil/keyframe.hpp>
@@ -600,8 +601,7 @@ namespace MWRender
 
         for (const auto& name : mResourceSystem->getVFS()->getRecursiveDirectoryIterator(animationPath))
         {
-            size_t pos = name.find_last_of('.');
-            if (pos != std::string::npos && name.compare(pos, name.size() - pos, ".kf") == 0)
+            if (Misc::getFileExtension(name) == "kf")
                 addSingleAnimSource(name, baseModel);
         }
     }
@@ -1292,8 +1292,7 @@ namespace MWRender
 
         for (const auto& name : resourceSystem->getVFS()->getRecursiveDirectoryIterator(animationPath))
         {
-            size_t pos = name.find_last_of('.');
-            if (pos != std::string::npos && name.compare(pos, name.size() - pos, ".nif") == 0)
+            if (Misc::getFileExtension(name) == "nif")
                 loadBonesFromFile(node, name, resourceSystem);
         }
     }

components/fontloader/fontloader.cpp

@@ -17,6 +17,7 @@
 
 #include <components/vfs/manager.hpp>
 
+#include <components/misc/pathhelpers.hpp>
 #include <components/misc/stringops.hpp>
 
 #include <components/myguiplatform/myguitexture.hpp>
@@ -193,8 +194,7 @@ namespace Gui
     {
         for (const auto& name : mVFS->getRecursiveDirectoryIterator("Fonts/"))
         {
-            size_t pos = name.find_last_of('.');
-            if (pos != std::string::npos && name.compare(pos, name.size() - pos, ".fnt") == 0)
+            if (Misc::getFileExtension(name) == "fnt")
                 loadBitmapFont(name, exportToFile);
         }
     }

components/misc/pathhelpers.hpp

@@ -0,0 +1,19 @@
+#ifndef OPENMW_COMPONENTS_MISC_PATHHELPERS_H
+#define OPENMW_COMPONENTS_MISC_PATHHELPERS_H
+
+#include <string>
+
+namespace Misc
+{
+    inline std::string_view getFileExtension(std::string_view file)
+    {
+        if (auto extPos = file.find_last_of('.'); extPos != std::string::npos)
+        {
+            file.remove_prefix(extPos + 1);
+            return file;
+        }
+        return {};
+    }
+}
+
+#endif

components/resource/bulletshapemanager.cpp

@@ -8,6 +8,7 @@
 
 #include <BulletCollision/CollisionShapes/btTriangleMesh.h>
 
+#include <components/misc/pathhelpers.hpp>
 #include <components/sceneutil/visitor.hpp>
 #include <components/vfs/manager.hpp>
 
@@ -129,12 +130,7 @@ osg::ref_ptr<const BulletShape> BulletShapeManager::getShape(const std::string &
         shape = osg::ref_ptr<BulletShape>(static_cast<BulletShape*>(obj.get()));
     else
     {
-        size_t extPos = normalized.find_last_of('.');
-        std::string ext;
-        if (extPos != std::string::npos && extPos+1 < normalized.size())
-            ext = normalized.substr(extPos+1);
-
-        if (ext == "nif")
+        if (Misc::getFileExtension(normalized) == "nif")
         {
             NifBullet::BulletNifLoader loader;
             shape = loader.load(*mNifFileManager->get(normalized));

components/resource/imagemanager.cpp

@@ -4,6 +4,7 @@
 #include <osgDB/Registry>
 
 #include <components/debug/debuglog.hpp>
+#include <components/misc/pathhelpers.hpp>
 #include <components/vfs/manager.hpp>
 
 #include "objectcache.hpp"
@@ -102,10 +103,7 @@ namespace Resource
                 return mWarningImage;
             }
 
-            size_t extPos = normalized.find_last_of('.');
-            std::string ext;
-            if (extPos != std::string::npos && extPos+1 < normalized.size())
-                ext = normalized.substr(extPos+1);
+            const std::string ext(Misc::getFileExtension(normalized));
             osgDB::ReaderWriter* reader = osgDB::Registry::instance()->getReaderWriterForExtension(ext);
             if (!reader)
             {

components/resource/keyframemanager.cpp

@@ -9,6 +9,7 @@
 #include <components/nifosg/nifloader.hpp>
 #include <components/sceneutil/keyframe.hpp>
 #include <components/sceneutil/osgacontroller.hpp>
+#include <components/misc/pathhelpers.hpp>
 #include <components/misc/stringops.hpp>
 
 #include "animation.hpp"
@@ -141,8 +142,7 @@ namespace Resource
         else
         {
             osg::ref_ptr<SceneUtil::KeyframeHolder> loaded (new SceneUtil::KeyframeHolder);
-            std::string ext = Resource::getFileExtension(normalized);
-            if (ext == "kf")
+            if (Misc::getFileExtension(normalized) == "kf")
             {
                 NifOsg::Loader::loadKf(Nif::NIFFilePtr(new Nif::NIFFile(mVFS->getNormalized(normalized), normalized)), *loaded.get());
             }

components/resource/scenemanager.cpp

@@ -17,6 +17,7 @@
 #include <components/nifosg/nifloader.hpp>
 #include <components/nif/niffile.hpp>
 
+#include <components/misc/pathhelpers.hpp>
 #include <components/misc/stringops.hpp>
 
 #include <components/vfs/manager.hpp>
@@ -388,12 +389,12 @@ namespace Resource
 
     osg::ref_ptr<osg::Node> load (const std::string& normalizedFilename, const VFS::Manager* vfs, Resource::ImageManager* imageManager, Resource::NifFileManager* nifFileManager)
     {
-        std::string ext = Resource::getFileExtension(normalizedFilename);
+        auto ext = Misc::getFileExtension(normalizedFilename);
         if (ext == "nif")
             return NifOsg::Loader::load(nifFileManager->get(normalizedFilename), imageManager);
         else
         {
-            osgDB::ReaderWriter* reader = osgDB::Registry::instance()->getReaderWriterForExtension(ext);
+            osgDB::ReaderWriter* reader = osgDB::Registry::instance()->getReaderWriterForExtension(std::string(ext));
             if (!reader)
             {
                 std::stringstream errormsg;
@@ -816,12 +817,4 @@ namespace Resource
         shaderVisitor->setTranslucentFramebuffer(translucentFramebuffer);
         return shaderVisitor;
     }
-
-    std::string getFileExtension(const std::string& file)
-    {
-        size_t extPos = file.find_last_of('.');
-        if (extPos != std::string::npos && extPos+1 < file.size())
-            return file.substr(extPos+1);
-        return std::string();
-    }
 }