feat: directory-based resource resolver

engine/include/fishbone/resource.h

@@ -1,21 +1,47 @@
-#ifndef __FISHBONE_THREAD_H__
-#define __FISHBONE_THREAD_H__
+#ifndef __FISHBONE_RESOURCE_H__
+#define __FISHBONE_RESOURCE_H__
 
 #include <fishbone/pre.h>
 
 namespace fishbone {
 	class Resource;
+	class BaseEngine;
 }; // namespace fishbone
 
 #include <fishbone/file.h>
 
 namespace fishbone {
+	class ResourceResolver {
+	    public:
+		virtual bool   exists(std::string path)					= 0;
+		virtual size_t getSize(std::string path)				= 0;
+		virtual bool   copyData(std::string path, char* buffer, size_t maxSize) = 0;
+	};
+
+	class DirectoryResourceResolver : public ResourceResolver {
+		std::vector<std::string> searchPaths;
+
+		std::string findAbsolutePath(std::string path);
+	    public:
+		DirectoryResourceResolver(std::vector<std::string> searchPaths);
+
+		bool   exists(std::string path) override;
+		size_t getSize(std::string path) override;
+		bool   copyData(std::string path, char* buffer, size_t maxSize) override;
+	};
+
 	class Resource {
+		char* buffer;
+		size_t bufferSize;
+
 	    public:
 		fishbone::File* open(std::string path);
 
-		Resource(std::string path);
+		Resource(BaseEngine* engine, std::string path);
 		~Resource();
+
+		char* getBuffer();
+		size_t getSize();
 	};
 }; // namespace fishbone