axmol/cocos2dx/platform/CCFileUtilsCommon_cpp.h

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

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#ifndef __CC_PLATFORM_FILEUTILS_CPP__
#error "CCFileUtilsCommon_cpp.h can only be included for CCFileUtils.cpp in platform/win32(android,...)"
#endif /* __CC_PLATFORM_FILEUTILS_CPP__ */

#include "CCFileUtils.h"
#include "CCDirector.h"
#include "cocoa/CCDictionary.h"

#if (CC_TARGET_PLATFORM != CC_PLATFORM_IOS && CC_TARGET_PLATFORM != CC_PLATFORM_MAC)

#include "cocoa/CCString.h"
#include "CCSAXParser.h"
#include "support/zip_support/unzip.h"

#include <stack>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xmlmemory.h>

NS_CC_BEGIN

typedef enum 
{
    SAX_NONE = 0,
    SAX_KEY,
    SAX_DICT,
    SAX_INT,
    SAX_REAL,
    SAX_STRING,
    SAX_ARRAY
}CCSAXState;

typedef enum
{
    SAX_RESULT_NONE = 0,
    SAX_RESULT_DICT,
    SAX_RESULT_ARRAY
}CCSAXResult;

class CCDictMaker : public CCSAXDelegator
{
public:
    CCSAXResult m_eResultType;
    CCArray* m_pRootArray;
    CCDictionary *m_pRootDict;
    CCDictionary *m_pCurDict;
    std::stack<CCDictionary*> m_tDictStack;
    std::string m_sCurKey;   ///< parsed key
    std::string m_sCurValue; // parsed value
    CCSAXState m_tState;
    CCArray* m_pArray;

    std::stack<CCArray*> m_tArrayStack;
    std::stack<CCSAXState>  m_tStateStack;

public:
    CCDictMaker()        
        : m_eResultType(SAX_RESULT_NONE),
          m_pRootArray(NULL), 
          m_pRootDict(NULL),
          m_pCurDict(NULL),
          m_tState(SAX_NONE),
          m_pArray(NULL)
    {
    }

    ~CCDictMaker()
    {
    }

    CCDictionary* dictionaryWithContentsOfFile(const char *pFileName)
    {
        m_eResultType = SAX_RESULT_DICT;
        CCSAXParser parser;

        if (false == parser.init("UTF-8"))
        {
            return NULL;
        }
        parser.setDelegator(this);

        parser.parse(pFileName);
        return m_pRootDict;
    }

    CCArray* arrayWithContentsOfFile(const char* pFileName)
    {
        m_eResultType = SAX_RESULT_ARRAY;
        CCSAXParser parser;

        if (false == parser.init("UTF-8"))
        {
            return NULL;
        }
        parser.setDelegator(this);

        parser.parse(pFileName);
        return m_pArray;
    }

    void startElement(void *ctx, const char *name, const char **atts)
    {
        CC_UNUSED_PARAM(ctx);
        CC_UNUSED_PARAM(atts);
        std::string sName((char*)name);
        if( sName == "dict" )
        {
            m_pCurDict = new CCDictionary();
            if(m_eResultType == SAX_RESULT_DICT && m_pRootDict == NULL)
            {
                // Because it will call m_pCurDict->release() later, so retain here.
                m_pRootDict = m_pCurDict;
                m_pRootDict->retain();
            }
            m_tState = SAX_DICT;

            CCSAXState preState = SAX_NONE;
            if (! m_tStateStack.empty())
            {
                preState = m_tStateStack.top();
            }

            if (SAX_ARRAY == preState)
            {
                // add the dictionary into the array
                m_pArray->addObject(m_pCurDict);
            }
            else if (SAX_DICT == preState)
            {
                // add the dictionary into the pre dictionary
                CCAssert(! m_tDictStack.empty(), "The state is wrong!");
                CCDictionary* pPreDict = m_tDictStack.top();
                pPreDict->setObject(m_pCurDict, m_sCurKey.c_str());
            }

            m_pCurDict->release();

            // record the dict state
            m_tStateStack.push(m_tState);
            m_tDictStack.push(m_pCurDict);
        }
        else if(sName == "key")
        {
            m_tState = SAX_KEY;
        }
        else if(sName == "integer")
        {
            m_tState = SAX_INT;
        }
        else if(sName == "real")
        {
            m_tState = SAX_REAL;
        }
        else if(sName == "string")
        {
            m_tState = SAX_STRING;
        }
        else if (sName == "array")
        {
            m_tState = SAX_ARRAY;
            m_pArray = new CCArray();
            if (m_eResultType == SAX_RESULT_ARRAY && m_pRootArray == NULL)
            {
                m_pRootArray = m_pArray;
                m_pRootArray->retain();
            }
            CCSAXState preState = SAX_NONE;
            if (! m_tStateStack.empty())
            {
                preState = m_tStateStack.top();
            }

            if (preState == SAX_DICT)
            {
                m_pCurDict->setObject(m_pArray, m_sCurKey.c_str());
            }
            else if (preState == SAX_ARRAY)
            {
                CCAssert(! m_tArrayStack.empty(), "The state is worng!");
                CCArray* pPreArray = m_tArrayStack.top();
                pPreArray->addObject(m_pArray);
            }
            m_pArray->release();
            // record the array state
            m_tStateStack.push(m_tState);
            m_tArrayStack.push(m_pArray);
        }
        else
        {
            m_tState = SAX_NONE;
        }
    }

    void endElement(void *ctx, const char *name)
    {
        CC_UNUSED_PARAM(ctx);
        CCSAXState curState = m_tStateStack.empty() ? SAX_DICT : m_tStateStack.top();
        std::string sName((char*)name);
        if( sName == "dict" )
        {
            m_tStateStack.pop();
            m_tDictStack.pop();
            if ( !m_tDictStack.empty())
            {
                m_pCurDict = m_tDictStack.top();
            }
        }
        else if (sName == "array")
        {
            m_tStateStack.pop();
            m_tArrayStack.pop();
            if (! m_tArrayStack.empty())
            {
                m_pArray = m_tArrayStack.top();
            }
        }
        else if (sName == "true")
        {
            CCString *str = new CCString("1");
            if (SAX_ARRAY == curState)
            {
                m_pArray->addObject(str);
            }
            else if (SAX_DICT == curState)
            {
                m_pCurDict->setObject(str, m_sCurKey.c_str());
            }
            str->release();
        }
        else if (sName == "false")
        {
            CCString *str = new CCString("0");
            if (SAX_ARRAY == curState)
            {
                m_pArray->addObject(str);
            }
            else if (SAX_DICT == curState)
            {
                m_pCurDict->setObject(str, m_sCurKey.c_str());
            }
            str->release();
        }
        else if (sName == "string" || sName == "integer" || sName == "real")
        {
            CCString* pStrValue = new CCString(m_sCurValue);

            if (SAX_ARRAY == curState)
            {
                m_pArray->addObject(pStrValue);
            }
            else if (SAX_DICT == curState)
            {
                m_pCurDict->setObject(pStrValue, m_sCurKey.c_str());
            }

            pStrValue->release();
            m_sCurValue.clear();
        }
        
        m_tState = SAX_NONE;
    }

    void textHandler(void *ctx, const char *ch, int len)
    {
        CC_UNUSED_PARAM(ctx);
        if (m_tState == SAX_NONE)
        {
            return;
        }

        CCSAXState curState = m_tStateStack.empty() ? SAX_DICT : m_tStateStack.top();
        CCString *pText = new CCString(std::string((char*)ch,0,len));

        switch(m_tState)
        {
        case SAX_KEY:
            m_sCurKey = pText->getCString();
            break;
        case SAX_INT:
        case SAX_REAL:
        case SAX_STRING:
            {
                if (curState == SAX_DICT)
                {
                    CCAssert(!m_sCurKey.empty(), "not found key : <integet/real>");
                }
                
                m_sCurValue.append(pText->getCString());
            }
            break;
        default:
            break;
        }
        pText->release();
    }
};

CCDictionary* ccFileUtils_dictionaryWithContentsOfFileThreadSafe(const char *pFileName)
{
    CCDictMaker tMaker;
    return tMaker.dictionaryWithContentsOfFile(pFileName);
}

CCArray* ccFileUtils_arrayWithContentsOfFileThreadSafe(const char* pFileName)
{
    CCDictMaker tMaker;
    return tMaker.arrayWithContentsOfFile(pFileName);
}

unsigned char* CCFileUtils::getFileDataFromZip(const char* pszZipFilePath, const char* pszFileName, unsigned long * pSize)
{
    unsigned char * pBuffer = NULL;
    unzFile pFile = NULL;
    *pSize = 0;

    do 
    {
        CC_BREAK_IF(!pszZipFilePath || !pszFileName);
        CC_BREAK_IF(strlen(pszZipFilePath) == 0);

        pFile = unzOpen(pszZipFilePath);
        CC_BREAK_IF(!pFile);

        int nRet = unzLocateFile(pFile, pszFileName, 1);
        CC_BREAK_IF(UNZ_OK != nRet);

        char szFilePathA[260];
        unz_file_info FileInfo;
        nRet = unzGetCurrentFileInfo(pFile, &FileInfo, szFilePathA, sizeof(szFilePathA), NULL, 0, NULL, 0);
        CC_BREAK_IF(UNZ_OK != nRet);

        nRet = unzOpenCurrentFile(pFile);
        CC_BREAK_IF(UNZ_OK != nRet);

        pBuffer = new unsigned char[FileInfo.uncompressed_size];
        int nSize = 0;
        nSize = unzReadCurrentFile(pFile, pBuffer, FileInfo.uncompressed_size);
        CCAssert(nSize == 0 || nSize == (int)FileInfo.uncompressed_size, "the file size is wrong");

        *pSize = FileInfo.uncompressed_size;
        unzCloseCurrentFile(pFile);
    } while (0);

    if (pFile)
    {
        unzClose(pFile);
    }

    return pBuffer;
}

void CCFileUtils::setResourceDirectory(const char* pszResourceDirectory, bool isWorkingDir)
{
    m_obDirectory = pszResourceDirectory;
    if (m_obDirectory.size() > 0 && m_obDirectory[m_obDirectory.size() - 1] != '/')
    {
        m_obDirectory.append("/");
    }
    m_isWorkingDirectory = isWorkingDir;
}

const char* CCFileUtils::getResourceDirectory()
{
    return m_obDirectory.c_str();
}

//////////////////////////////////////////////////////////////////////////
// Notification support when getFileData from invalid file path.
//////////////////////////////////////////////////////////////////////////
static bool s_bPopupNotify = true;

void CCFileUtils::setPopupNotify(bool bNotify)
{
    s_bPopupNotify = bNotify;
}

bool CCFileUtils::isPopupNotify()
{
    return s_bPopupNotify;
}

NS_CC_END

#endif // (CC_TARGET_PLATFORM != CC_PLATFORM_IOS && CC_TARGET_PLATFORM != CC_PLATFORM_MAC)