axmol/cocos2dx/platform/win32/CCFileUtils.cpp

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

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#define __CC_PLATFORM_FILEUTILS_CPP__
#include "platform/CCFileUtilsCommon_cpp.h"
#include <windows.h>
#include "CCDirector.h"

#define CC_RETINA_DISPLAY_FILENAME_SUFFIX "-hd"
#define CC_IPAD_FILENAME_SUFFIX "-ipad"
#define CC_IPAD_DISPLAY_RETINA_SUPPFIX "-ipadhd"

using namespace std;

NS_CC_BEGIN

// record the resource path
static char s_pszResourcePath[MAX_PATH] = {0};

static void _CheckPath()
{
    if (! s_pszResourcePath[0])
    {
        WCHAR  wszPath[MAX_PATH];
        int nNum = WideCharToMultiByte(CP_ACP, 0, wszPath, 
            GetCurrentDirectoryW(sizeof(wszPath), wszPath), 
            s_pszResourcePath, MAX_PATH, NULL, NULL);
        s_pszResourcePath[nNum] = '\\';
    }
}

static CCFileUtils* s_pFileUtils = NULL;

CCFileUtils* CCFileUtils::sharedFileUtils()
{
    if (s_pFileUtils == NULL)
    {
        s_pFileUtils = new CCFileUtils();
    }
    return s_pFileUtils;
}

void CCFileUtils::purgeFileUtils()
{
    if (s_pFileUtils != NULL)
    {
        s_pFileUtils->purgeCachedEntries();
    }
    
    CC_SAFE_DELETE(s_pFileUtils);
}

void CCFileUtils::purgeCachedEntries()
{

}

void CCFileUtils::setResourcePath(const char *pszResourcePath)
{
    CCAssert(pszResourcePath != NULL, "[FileUtils setResourcePath] -- wrong resource path");
    CCAssert(strlen(pszResourcePath) <= MAX_PATH, "[FileUtils setResourcePath] -- resource path too long");

    strcpy(s_pszResourcePath, pszResourcePath);
}

const char* CCFileUtils::fullPathFromRelativePath(const char *pszRelativePath)
{
    _CheckPath();

    CCString * pRet = new CCString();
    pRet->autorelease();
    if ((strlen(pszRelativePath) > 1 && pszRelativePath[1] == ':'))
    {
        // path start with "x:", is absolute path
        pRet->m_sString = pszRelativePath;
    }
    else if (strlen(pszRelativePath) > 0 
        && ('/' == pszRelativePath[0] || '\\' == pszRelativePath[0]))
    {
        // path start with '/' or '\', is absolute path without driver name
        char szDriver[3] = {s_pszResourcePath[0], s_pszResourcePath[1], 0};
        pRet->m_sString = szDriver;
        pRet->m_sString += pszRelativePath;
    }
    else
    {
        pRet->m_sString = s_pszResourcePath;
        pRet->m_sString += pszRelativePath;
    }

    // is ipad?
    CCSize winSize = CCDirector::sharedDirector()->getWinSize();
    bool isIpad = (winSize.width == 1024 || winSize.height == 768);

    std::string hiRes = pRet->m_sString.c_str();
    std::string::size_type pos = hiRes.find_last_of("/\\");
    std::string::size_type dotPos = hiRes.find_last_of(".");
    *pResolutionType = kCCResolutioniPhone;

    if (isIpad)
    {
        if (CC_CONTENT_SCALE_FACTOR() == 1.0f)
        {
            // ipad

            if (std::string::npos != dotPos && dotPos > pos)
            {
                hiRes.insert(dotPos, CC_IPAD_FILENAME_SUFFIX);
            }
            else
            {
                hiRes.append(CC_IPAD_FILENAME_SUFFIX);
            }
            
            *pResolutionType = kCCResolutioniPad;
        }
        else
        {
            // ipad retina

            if (std::string::npos != dotPos && dotPos > pos)
            {
                hiRes.insert(dotPos, CC_IPAD_DISPLAY_RETINA_SUPPFIX);
            }
            else
            {
                hiRes.append(CC_IPAD_DISPLAY_RETINA_SUPPFIX);
            }
            
            *pResolutionType = kCCResolutioniPadRetinaDisplay;
        }
    }
    else
    {    
        if (CC_CONTENT_SCALE_FACTOR() != 1.0f)
        {
            // iphone retina

            if (std::string::npos != dotPos && dotPos > pos)
            {
                hiRes.insert(dotPos, CC_RETINA_DISPLAY_FILENAME_SUFFIX);
            }
            else
            {
                hiRes.append(CC_RETINA_DISPLAY_FILENAME_SUFFIX);
            }
            
            *pResolutionType = kCCResolutioniPhoneRetinaDisplay;
        }
    }  

    DWORD attrib = GetFileAttributesA(hiRes.c_str());
    if (attrib != INVALID_FILE_ATTRIBUTES && ! (FILE_ATTRIBUTE_DIRECTORY & attrib))
    {
        pRet->m_sString.swap(hiRes);
    }

    return pRet->m_sString.c_str();
}

const char *CCFileUtils::fullPathFromRelativeFile(const char *pszFilename, const char *pszRelativeFile)
{
    _CheckPath();
    // std::string relativeFile = fullPathFromRelativePath(pszRelativeFile);
    std::string relativeFile = pszRelativeFile;
    CCString *pRet = new CCString();
    pRet->autorelease();
    pRet->m_sString = relativeFile.substr(0, relativeFile.find_last_of("/\\") + 1);
    pRet->m_sString += pszFilename;
    return pRet->m_sString.c_str();
}

unsigned char* CCFileUtils::getFileData(const char* pszFileName, const char* pszMode, unsigned long* pSize)
{
    unsigned char* pBuffer = NULL;
    CCAssert(pszFileName != NULL && pSize != NULL && pszMode != NULL, "Invaild parameters.");
    *pSize = 0;
    do 
    {
        // read the file from hardware
        FILE *fp = fopen(pszFileName, pszMode);
        CC_BREAK_IF(!fp);

        fseek(fp,0,SEEK_END);
        *pSize = ftell(fp);
        fseek(fp,0,SEEK_SET);
        pBuffer = new unsigned char[*pSize];
        *pSize = fread(pBuffer,sizeof(unsigned char), *pSize,fp);
        fclose(fp);
    } while (0);

    if (! pBuffer && isPopupNotify())
    {
        std::string title = "Notification";
        std::string msg = "Get data from file(";
        msg.append(pszFileName).append(") failed!");

        CCMessageBox(msg.c_str(), title.c_str());
    }
    return pBuffer;
}

string CCFileUtils::getWriteablePath()
{
    // return the path that the exe file saved in

    char full_path[_MAX_PATH + 1];
    ::GetModuleFileNameA(NULL, full_path, _MAX_PATH + 1);

    string ret((char*)full_path);

    // remove xxx.exe
    ret =  ret.substr(0, ret.rfind("\\") + 1);

    return ret;
}

NS_CC_END