#ifndef __IVReader_H__
#define __IVReader_H__


#include "ivnode.h"
#include "ivmeshdata.h"
#include "ivmanualmeshloader.h"
#include "ogre.h"

#define COMMENTCHAR '#'
#define BLOCKSIZE 150
#define BUFFERSIZE 256


static const int validIVHeaderCnt = 2;

static const char *validIVHeader[2] = {
    { "#Inventor V2.1 ascii\n" },
	{ "#VRML V1.0 ascii\n" },
};


enum IVTokenType
{
	IV_TOKEN_INVALID = -1,
	IV_TOKEN_STRING = 0,
	IV_TOKEN_INT = 1,
	IV_TOKEN_REAL = 2,
	IV_TOKEN_BRACEOPEN = 3,				// {
	IV_TOKEN_BRACECLOSE = 4,			// }
	IV_TOKEN_BRACKETOPEN = 5,			// [
	IV_TOKEN_BRACKETCLOSE = 6,			// ]
	IV_TOKEN_PARENTHESISOPEN = 7,		// (
	IV_TOKEN_PARENTHESISCLOSE = 8,		// )
	IV_TOKEN_DEF = 9,					// DEF
	IV_TOKEN_USE = 10,					// USE
};

class __declspec(dllexport) IVMeshListNode
{
	public:
		IVMeshListNode(std::string name, IVManualMeshLoader *loader);
		~IVMeshListNode();

		void attachNewNode(std::string name, IVManualMeshLoader *loader);

		IVManualMeshLoader *getManualMeshLoader(std::string name);

		IVMeshListNode *next;

	private:
		std::string name;
		IVManualMeshLoader *loader;
};

class __declspec(dllexport) IVDefListNode
{
	public:
		IVDefListNode(std::string name, IVNode *node);
		~IVDefListNode();

		void attachNewNode(std::string name, IVNode *node);

		IVNode *getDef(std::string name);

		IVDefListNode *next;

	private:
		std::string name;
		IVNode *node;

};

class __declspec(dllexport) IVReader
{
	public:
		IVReader();
		~IVReader();

		void setLog(Ogre::Log *IVLog = NULL);

		bool loadFile(const char* filename);
		void print();
//		IVNode *getNode(const char* name);


		void buildTree(Ogre::SceneManager *sceneMgr, Ogre::SceneNode *sceneNodeRoot);

		void collapse();

		static std::string intToStr(int num);
		static std::string realToStr(Ogre::Real num);
		
		static Ogre::Log *IVLog;

	private:
		bool checkHeader(const char *string);
		char buf[BUFFERSIZE];
		int bufOffset;
		bool getNextElement(char *token, IVTokenType *type);
		void classify(char *token, IVTokenType *type);

		bool isSpace(char c);
		bool isNewline(char c);
		bool eof;
		bool isDigit(char c);
		bool isHexDigit(char c);

		IVNode *root;
		FILE* infile;

		static IVMeshListNode *meshList;
		static void addMeshToList(std::string name, IVManualMeshLoader *loader);
		
		static int instanceCnt;

		int treeCnt, nodeCnt, matCnt;
		char *fileName;

		Ogre::Entity *createEntity(Ogre::SceneManager* sceneMgr, std::string name, IVMeshData *mData, Ogre::Vector3 *translation = NULL);

		void buildTree(Ogre::SceneManager *sceneMgr, Ogre::SceneNode *sceneNodeRoot, IVNode *ivRoot, IVMeshData *mData = NULL, Ogre::Material *material = NULL);

		IVDefListNode *defList;
		void addDefToList(std::string name, IVNode *node);

};


#endif