Added Config File resource

include/Engine/Core/ConfigFile.h

@@ -0,0 +1,46 @@
+#ifndef ConfigFile_h__
+#define ConfigFile_h__
+
+#include <string>
+#include <boost/filesystem.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/ini_parser.hpp>
+
+#include "ResourceManager.h"
+
+class ConfigFile : public Resource
+{
+	friend class ResourceManager;
+
+private:
+	ConfigFile(std::string path);
+
+public:
+	template <typename T>
+	T Get(std::string key, T defaultValue);
+	template <typename T>
+	void Set(std::string key, T value);
+
+	void SaveToDisk();
+
+	private:
+	boost::filesystem::path m_Path;
+	boost::property_tree::ptree m_PTreeDefaults;
+	boost::property_tree::ptree m_PTreeOverrides;
+	boost::property_tree::ptree m_PTreeMerged;
+};
+
+template <typename T>
+T ConfigFile::Get(std::string key, T defaultValue)
+{
+	return m_PTreeMerged.get<T>(key, defaultValue);
+}
+
+template <typename T>
+void ConfigFile::Set(std::string key, T value)
+{
+	m_PTreeOverrides.put<T>(key, value);
+	m_PTreeMerged.put<T>(key, value);
+}
+
+#endif

src/Engine/Core/ConfigFile.cpp

@@ -0,0 +1,40 @@
+#include "PrecompiledHeader.h"
+#include "Core/ConfigFile.h"
+
+ConfigFile::ConfigFile(std::string path)
+{
+	m_Path = path;
+
+	boost::filesystem::path defaultFile;
+	defaultFile = m_Path.parent_path() / ("Default" + m_Path.filename().string());
+
+	// Read defaults
+	if (boost::filesystem::exists(defaultFile)) {
+		try {
+			boost::property_tree::ini_parser::read_ini(defaultFile.string(), m_PTreeDefaults);
+		} catch (boost::property_tree::ptree_error& e) {
+			LOG_ERROR("Failed to parse \"%s\":\n%s", defaultFile.string().c_str(), e.what());
+		}
+	} else {
+		LOG_ERROR("Failed to find \"%s\"! Relying on hardcoded default values!", defaultFile.string().c_str());
+	}
+
+	m_PTreeMerged = m_PTreeDefaults;
+
+	// Read overrides
+	if (boost::filesystem::exists(m_Path)) {
+		try {
+			boost::property_tree::ini_parser::read_ini(m_Path.string(), m_PTreeOverrides);
+			for (auto& node : m_PTreeOverrides) {
+				m_PTreeMerged.put_child(node.first, node.second);
+			}
+		} catch (boost::property_tree::ptree_error& e) {
+			LOG_ERROR("Failed to parse \"%s\":\n%s", m_Path.filename().string().c_str(), e.what());
+		}
+	}
+}
+
+void ConfigFile::SaveToDisk()
+{
+	boost::property_tree::ini_parser::write_ini(m_Path.string(), m_PTreeOverrides);
+}