axmol/cocos2dx/include/CCDictionary.h

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

http://www.cocos2d-x.org

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#ifndef __CCDICTIONARY_H__
#define __CCDICTIONARY_H__

#include "support/data_support/uthash.h"
#include "CCObject.h"
#include "CCArray.h"
#include "CCString.h"

NS_CC_BEGIN

class CCDictionary;

class CC_DLL CCDictElement
{
	#define MAX_KEY_LEN  256
public:
	CCDictElement(const char* pszKey, CCObject* pObject)
	{
		init();
		m_pObject = pObject;

		const char* pStart = pszKey;
		
		int len = strlen(pszKey);
		if (len > MAX_KEY_LEN )
		{
			char* pEnd = (char*)&pszKey[len-1];
			pStart = pEnd - (MAX_KEY_LEN-1);
		}

		strcpy(m_szKey, pStart);
	}

	CCDictElement(int iKey, CCObject* pObject)
	{
		init();
		m_iKey = iKey;
		m_pObject = pObject;
	}

	inline const char* getStrKey() const
	{
        CCAssert(m_szKey[0] != '\0', "Should not call this function for integer dictionary");
		return m_szKey;
	}

	inline int getIntKey() const 
	{
        CCAssert(m_szKey[0] == '\0', "Should not call this function for string dictionary");
		return m_iKey;
	}

	inline CCObject* getObject() const
	{
		return m_pObject;
	}

private:
	inline void init()
	{
		m_iKey = 0;
		m_pObject = NULL;
		memset(m_szKey, 0, sizeof(m_szKey));
		memset(&hh, 0, sizeof(hh));
	}

private:
	char m_szKey[MAX_KEY_LEN+1];  /** hash key of string type*/
	int  m_iKey;        /** hash key of integer type */
	CCObject* m_pObject;/** hash value */
public:
	UT_hash_handle hh; /* makes this class hashable */
	friend class CCDictionary;
};


#define CCDICT_FOREACH(__dict__, __el__) \
    CCDictElement* pTmp##__dict__##__el__ = NULL; \
	HASH_ITER(hh, (__dict__)->m_pElements, __el__, pTmp##__dict__##__el__)


class CC_DLL CCDictionary : public CCObject
{
public:
	CCDictionary();
	~CCDictionary();

	/// return the number of items
	unsigned int count();

	/// return all the keys
	CCArray* allKeys();

	/** @warning : We use '==' to compare two objects*/
	CCArray* allKeysForObject(CCObject* object);

	CCObject* objectForKey(const CCString& key);
	CCObject* objectForKey(int key);
	const CCString* valueForKey(const CCString& key);
	const CCString* valueForKey(int key);


	void setObject(CCObject* pObject, const CCString& key);
	void setObject(CCObject* pObject, int key);

	void removeObjectForKey(const CCString& key);
	void removeObjectForKey(int key);
	void removeObjectsForKeys(CCArray* pKeyArray);
	void removeObjectForElememt(CCDictElement* pElement);
	void removeAllObjects();

	virtual CCObject* copyWithZone(CCZone* pZone);

	static CCDictionary* dictionaryWithDictionary(CCDictionary* srcDict);
    /**
    @brief   Generate a CCDictionary pointer by file
    @param   pFileName  The file name of *.plist file
    @return  The CCDictionary pointer generated from the file
    */
    static CCDictionary* dictionaryWithContentsOfFile(const char *pFileName);

	/*
	@brief The same meaning as dictionaryWithContentsOfFile(), but it doesn't call autorelease, so the
	       invoker should call release().
	*/
	static CCDictionary* dictionaryWithContentsOfFileThreadSafe(const char *pFileName);

private:
	void setObjectUnSafe(CCObject* pObject, const CCString& key);
	void setObjectUnSafe(CCObject* pObject, const int key);
	
public:
	CCDictElement* m_pElements;
private:
	
	enum CCDictType
	{
		kCCDictUnknown = 0,
		kCCDictStr,
		kCCDictInt
	};
	CCDictType m_eDictType;
	CCDictType m_eOldDictType;
};

NS_CC_END

#endif /* __CCDICTIONARY_H__ */