Renamed EntityFile to EntityXMLFile to be able to separate file parsing from entity creation

2016-03-02 18:42:11 +01:00
parent 62c8196ad4
commit 26d6546d79
33 changed files with 121 additions and 121 deletions
@@ -0,0 +1,164 @@
+#ifndef EntityFile_h__
+#define EntityFile_h__
+
+#include <stack>
+#include <boost/lexical_cast.hpp>
+#include <xercesc/util/XercesDefs.hpp>
+#include <xercesc/util/PlatformUtils.hpp>
+#include <xercesc/sax2/SAX2XMLReader.hpp>
+#include <xercesc/sax2/XMLReaderFactory.hpp>
+#include <xercesc/sax2/DefaultHandler.hpp>
+#include <xercesc/sax2/Attributes.hpp>
+#include <xercesc/util/XMLString.hpp>
+#include <xercesc/util/XMLChar.hpp>
+#include <xercesc/sax2/DefaultHandler.hpp>
+#include <xercesc/framework/XMLDocumentHandler.hpp>
+#include <xercesc/framework/psvi/XSElementDeclaration.hpp>
+#include <xercesc/framework/psvi/XSComplexTypeDefinition.hpp>
+#include <xercesc/framework/psvi/XSParticle.hpp>
+#include <xercesc/framework/psvi/XSModelGroup.hpp>
+#include <xercesc/framework/psvi/XSAnnotation.hpp>
+#include <xercesc/framework/psvi/XSValue.hpp>
+#include <xercesc/framework/XMLGrammarPoolImpl.hpp>
+#include <xercesc/dom/DOM.hpp>
+#include <xercesc/dom/DOMLSInput.hpp>
+#include <xercesc/dom/DOMElement.hpp>
+
+#include "../GLM.h"
+#include "Util/XercesString.h"
+#include "ResourceManager.h"
+#include "Entity.h"
+#include "ComponentInfo.h"
+
+class EntityFileHandler
+{
+    friend class EntityFileSAXHandler;
+public:
+    // @param EntityID The entity found
+    // @param EntityID The parent of the entity
+    typedef std::function<void(EntityID, EntityID, const std::string&)> OnStartEntityCallback;
+    void SetStartEntityCallback(OnStartEntityCallback c) { m_OnStartEntityCallback = c; }
+    // @param EntityID The entity the component corresponds to
+    // @param std::string Type name of the component
+    typedef std::function<void(EntityID, const std::string&)> OnStartComponentCallback;
+    void SetStartComponentCallback(OnStartComponentCallback c) { m_OnStartComponentCallback = c; }
+    // @param EntityID Entity 
+    // @param std::string Component name 
+    // @param std::string Field name
+    // @param std::map<std::string, std::string> Field attribute names and values
+    typedef std::function<void(EntityID, const std::string&, const std::string&, const std::map<std::string, std::string>&)> OnStartFieldCallback;
+    void SetStartFieldCallback(OnStartFieldCallback c) { m_OnStartFieldCallback = c; }
+    // @param EntityID Entity 
+    // @param std::string Component name 
+    // @param std::string Field name
+    // @param char* Field data
+    typedef std::function<void(EntityID, const std::string&, const std::string&, const char*)> OnStartFieldDataCallback;
+    void SetStartFieldDataCallback(OnStartFieldDataCallback c) { m_OnStartFieldDataCallback = c; }
+
+private:
+    OnStartEntityCallback m_OnStartEntityCallback = nullptr;
+    OnStartComponentCallback m_OnStartComponentCallback = nullptr;
+    OnStartFieldCallback m_OnStartFieldCallback = nullptr;
+    OnStartFieldDataCallback m_OnStartFieldDataCallback = nullptr;
+};
+
+class EntityFileSAXHandler : public xercesc::DefaultHandler
+{
+public:
+    enum class State
+    {
+        Unknown,
+        Entity,
+        Component,
+        ComponentField
+    };
+
+    EntityFileSAXHandler(const EntityFileHandler* handler, xercesc::SAX2XMLReader* reader);
+
+    void startElement(const XMLCh* const _uri, const XMLCh* const _localName, const XMLCh* const _qname, const xercesc::Attributes& attrs) override;
+    void characters(const XMLCh* const chars, const XMLSize_t length) override;
+    void endElement(const XMLCh* const _uri, const XMLCh* const _localName, const XMLCh* const _qname) override;
+
+    void warning(const xercesc::SAXParseException& e);
+    void error(const xercesc::SAXParseException& e);
+    void fatalError(const xercesc::SAXParseException& e);
+
+private:
+    const EntityFileHandler* m_Handler;
+    xercesc::XMLGrammarPool* m_GrammarPool;
+    xercesc::SAX2XMLReader* m_Reader;
+    //State m_CurrentScope = State::Unknown;
+    std::stack<State> m_StateStack;
+    unsigned int m_NextEntityID = 0;
+    std::stack<EntityID> m_EntityStack;
+    std::string m_CurrentComponent;
+    std::string m_CurrentField;
+    std::map<std::string, std::string> m_CurrentAttributes;
+
+    void onStartEntity(const xercesc::Attributes& attrs); 
+    void onEndEntity();
+    void onStartEntityRef(const xercesc::Attributes& attrs);
+    void onStartComponent(const std::string& name);
+    void onEndComponent(const std::string& name);
+    void onStartComponentField(const std::string& field, const xercesc::Attributes& attrs);
+    void onEndComponentField(const std::string& field);
+    void onFieldData(char* data);
+};
+
+class EntityFileXMLErrorHandler : public xercesc::ErrorHandler
+{
+public:
+	void warning(const xercesc::SAXParseException& e) override
+	{
+		reportParseException("Warning", e);
+	}
+	void error(const xercesc::SAXParseException& e) override
+	{
+		reportParseException("Error", e);
+	}
+	void fatalError(const xercesc::SAXParseException& e) override
+	{
+		reportParseException("FATAL ERROR", e);
+	}
+	void resetErrors() override { }
+
+private:
+	void reportParseException(std::string type, const xercesc::SAXParseException& e)
+	{
+		char* message = xercesc::XMLString::transcode(e.getMessage());
+		char* systemID = xercesc::XMLString::transcode(e.getSystemId());
+		std::cerr << systemID << ":" << e.getLineNumber() << ":" << e.getColumnNumber() << std::endl;
+		std::cerr << type << ": " << message << std::endl;
+		xercesc::XMLString::release(&systemID);
+		xercesc::XMLString::release(&message);
+	}
+};
+
+class EntityXMLFile : public Resource
+{
+    friend class ResourceManager;
+    friend class EntityFileSAXHandler;
+private:
+    EntityXMLFile(boost::filesystem::path path);
+    ~EntityXMLFile();
+
+public:
+    static unsigned int GetTypeStride(std::string typeName);
+    static void WriteAttributeData(char* outData, const ComponentInfo::Field_t& field, const std::map<std::string, std::string>& attributes);
+    static void WriteValueData(char* outData, const ComponentInfo::Field_t& field, const char* valueData);
+
+    xercesc::XMLGrammarPool* GrammarPool() const { return m_GrammarPool; }
+
+    void Parse(const EntityFileHandler* handler) const;
+
+private:
+    boost::filesystem::path m_FilePath;
+    xercesc::XMLGrammarPool* m_GrammarPool;
+    xercesc::SAX2XMLReader* m_SAX2XMLReader;
+	//std::map<std::string, ::ComponentInfo> m_ComponentInfo;
+    //std::vector<std::string> m_EntityReferences;
+
+    static void setReaderFeatures(xercesc::SAX2XMLReader* reader);
+};
+
+#endif