axmol/cocos/platform/winrt/CCFileUtilsWinRT.cpp

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Copyright (c) Microsoft Open Technologies, Inc.

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#include "CCFileUtilsWinRT.h"
#include "CCWinRTUtils.h"
#include "platform/CCCommon.h"

using namespace std;

NS_CC_BEGIN

static std::string s_pszResourcePath;

// D:\aaa\bbb\ccc\ddd\abc.txt --> D:/aaa/bbb/ccc/ddd/abc.txt
static inline std::string convertPathFormatToUnixStyle(const std::string& path)
{
    std::string ret = path;
    int len = ret.length();
    for (int i = 0; i < len; ++i)
    {
        if (ret[i] == '\\')
        {
            ret[i] = '/';
        }
    }
    return ret;
}


static void _checkPath()
{
    if (s_pszResourcePath.empty())
    {
		// TODO: needs to be tested
		s_pszResourcePath = convertPathFormatToUnixStyle(CCFileUtilsWinRT::getAppPath() + '\\' + "Assets\\res" + '\\');
    }
}

FileUtils* FileUtils::getInstance()
{
    if (s_sharedFileUtils == NULL)
    {
        s_sharedFileUtils = new CCFileUtilsWinRT();
        if(!s_sharedFileUtils->init())
        {
          delete s_sharedFileUtils;
          s_sharedFileUtils = NULL;
          CCLOG("ERROR: Could not init CCFileUtilsWinRT");
        }
    }
    return s_sharedFileUtils;
}


CCFileUtilsWinRT::CCFileUtilsWinRT()
{
}

bool CCFileUtilsWinRT::init()
{
    _checkPath();
    _defaultResRootPath = s_pszResourcePath;
    return FileUtils::init();
}

std::string CCFileUtilsWinRT::getPathForFilename(const std::string& filename, const std::string& resolutionDirectory, const std::string& searchPath)
{
    std::string unixFileName = convertPathFormatToUnixStyle(filename);
    std::string unixResolutionDirectory = convertPathFormatToUnixStyle(resolutionDirectory);
    std::string unixSearchPath = convertPathFormatToUnixStyle(searchPath);

    return FileUtils::getPathForFilename(unixFileName, unixResolutionDirectory, unixSearchPath);
}

std::string CCFileUtilsWinRT::getFullPathForDirectoryAndFilename(const std::string& strDirectory, const std::string& strFilename)
{
    std::string unixDirectory = convertPathFormatToUnixStyle(strDirectory);
    std::string unixFilename = convertPathFormatToUnixStyle(strFilename);
    return FileUtils::getFullPathForDirectoryAndFilename(unixDirectory, unixFilename);
}

bool CCFileUtilsWinRT::isFileExistInternal(const std::string& strFilePath) const
{
    bool ret = false;
    FILE * pf = 0;

    std::string strPath = strFilePath;
    if (!isAbsolutePath(strPath))
    { // Not absolute path, add the default root path at the beginning.
        strPath.insert(0, _defaultResRootPath);
    }

    const char* path = strPath.c_str();

	if (path && strlen(path) && (pf = fopen(path, "rb")))
    {
        ret = true;
        fclose(pf);
    }
    return ret;
}


bool CCFileUtilsWinRT::isAbsolutePath(const std::string& strPath) const
{
    if (   strPath.length() > 2 
        && ( (strPath[0] >= 'a' && strPath[0] <= 'z') || (strPath[0] >= 'A' && strPath[0] <= 'Z') )
        && strPath[1] == ':')
    {
        return true;
    }
    return false;
}

static Data getData(const std::string& filename, bool forString)
{
    CCASSERT(!filename.empty(), "Invalid filename!");
    
    Data ret;
    unsigned char* buffer = nullptr;
    ssize_t size = 0;
    const char* mode = nullptr;
    mode = "rb";
    
    do
    {
        // Read the file from hardware
        std::string fullPath = FileUtils::getInstance()->fullPathForFilename(filename);
        FILE *fp = fopen(fullPath.c_str(), mode);
        CC_BREAK_IF(!fp);
        fseek(fp,0,SEEK_END);
        size = ftell(fp);
        fseek(fp,0,SEEK_SET);
        
        if (forString)
        {
            buffer = (unsigned char*)malloc(sizeof(unsigned char) * (size + 1));
            buffer[size] = '\0';
        }
        else
        {
            buffer = (unsigned char*)malloc(sizeof(unsigned char) * size);
        }
        
        size = fread(buffer, sizeof(unsigned char), size, fp);
        fclose(fp);
    } while (0);
    
    if (nullptr == buffer || 0 == size)
    {
        std::string msg = "Get data from file(";
        msg.append(filename).append(") failed!");
        CCLOG("%s", msg.c_str());
    }
    else
    {
        ret.fastSet(buffer, size);
    }
    
    return ret;
}



std::string CCFileUtilsWinRT::getStringFromFile(const std::string& filename)
{
    Data data = getData(filename, true);
	if (data.isNull())
	{
		return "";
	}
    std::string ret((const char*)data.getBytes());
    return ret;
}



string CCFileUtilsWinRT::getWritablePath() const
{
	auto localFolderPath = Windows::Storage::ApplicationData::Current->LocalFolder->Path;
	return convertPathFormatToUnixStyle(std::string(PlatformStringToString(localFolderPath)) + '\\');
}

string CCFileUtilsWinRT::getAppPath()
{
	Windows::ApplicationModel::Package^ package = Windows::ApplicationModel::Package::Current;
	return convertPathFormatToUnixStyle(std::string(PlatformStringToString(package->InstalledLocation->Path)));
}

NS_CC_END