Ejemplos de URHO3D_IS_ASSET en C++ (Cpp)

Ejemplo n.º 1

Archivo: PackageFile.cpp Proyecto: Gargash/Urho3D

bool PackageFile::Open(const String& fileName, unsigned startOffset)
{
#ifdef ANDROID
    if (URHO3D_IS_ASSET(fileName))
    {
        URHO3D_LOGERROR("Package files within the apk are not supported on Android");
        return false;
    }
#endif

    SharedPtr<File> file(new File(context_, fileName));
    if (!file->IsOpen())
        return false;

    // Check ID, then read the directory
    file->Seek(startOffset);
    String id = file->ReadFileID();
    if (id != "UPAK" && id != "ULZ4")
    {
        // If start offset has not been explicitly specified, also try to read package size from the end of file
        // to know how much we must rewind to find the package start
        if (!startOffset)
        {
            unsigned fileSize = file->GetSize();
            file->Seek((unsigned)(fileSize - sizeof(unsigned)));
            unsigned newStartOffset = fileSize - file->ReadUInt();
            if (newStartOffset < fileSize)
            {
                startOffset = newStartOffset;
                file->Seek(startOffset);
                id = file->ReadFileID();
            }
        }

        if (id != "UPAK" && id != "ULZ4")
        {
            URHO3D_LOGERROR(fileName + " is not a valid package file");
            return false;
        }
    }

    fileName_ = fileName;
    nameHash_ = fileName_;
    totalSize_ = file->GetSize();
    compressed_ = id == "ULZ4";

    unsigned numFiles = file->ReadUInt();
    checksum_ = file->ReadUInt();

    for (unsigned i = 0; i < numFiles; ++i)
    {
        String entryName = file->ReadString();
        PackageEntry newEntry;
        newEntry.offset_ = file->ReadUInt() + startOffset;
        newEntry.size_ = file->ReadUInt();
        newEntry.checksum_ = file->ReadUInt();
        if (!compressed_ && newEntry.offset_ + newEntry.size_ > totalSize_)
        {
            URHO3D_LOGERROR("File entry " + entryName + " outside package file");
            return false;
        }
        else
            entries_[entryName] = newEntry;
    }

    return true;
}

Ejemplo n.º 2

Archivo: File.cpp Proyecto: 03050903/Urho3D

bool File::OpenInternal(const String& fileName, FileMode mode, bool fromPackage)
{
    Close();

    compressed_ = false;
    readSyncNeeded_ = false;
    writeSyncNeeded_ = false;
    
    FileSystem* fileSystem = GetSubsystem<FileSystem>();
    if (fileSystem && !fileSystem->CheckAccess(GetPath(fileName)))
    {
        URHO3D_LOGERRORF("Access denied to %s", fileName.CString());
        return false;
    }

    if (fileName.Empty())
    {
        URHO3D_LOGERROR("Could not open file with empty name");
        return false;
    }

#ifdef __ANDROID__
    if (URHO3D_IS_ASSET(fileName))
    {
        if (mode != FILE_READ)
        {
            URHO3D_LOGERROR("Only read mode is supported for Android asset files");
            return false;
        }

        assetHandle_ = SDL_RWFromFile(URHO3D_ASSET(fileName), "rb");
        if (!assetHandle_)
        {
            URHO3D_LOGERRORF("Could not open Android asset file %s", fileName.CString());
            return false;
        }
        else
        {
            fileName_ = fileName;
            mode_ = mode;
            position_ = 0;
            if (!fromPackage)
            {
                size_ = SDL_RWsize(assetHandle_);
                offset_ = 0;
            }
            checksum_ = 0;
            return true;
        }
    }
#endif

#ifdef _WIN32
    handle_ = _wfopen(GetWideNativePath(fileName).CString(), openMode[mode]);
#else
    handle_ = fopen(GetNativePath(fileName).CString(), openMode[mode]);
#endif

    // If file did not exist in readwrite mode, retry with write-update mode
    if (mode == FILE_READWRITE && !handle_)
    {
#ifdef _WIN32
        handle_ = _wfopen(GetWideNativePath(fileName).CString(), openMode[mode + 1]);
#else
        handle_ = fopen(GetNativePath(fileName).CString(), openMode[mode + 1]);
#endif
    }

    if (!handle_)
    {
        URHO3D_LOGERRORF("Could not open file %s", fileName.CString());
        return false;
    }

    if (!fromPackage)
    {
        fseek((FILE*)handle_, 0, SEEK_END);
        long size = ftell((FILE*)handle_);
        fseek((FILE*)handle_, 0, SEEK_SET);
        if (size > M_MAX_UNSIGNED)
        {
            URHO3D_LOGERRORF("Could not open file %s which is larger than 4GB", fileName.CString());
            Close();
            size_ = 0;
            return false;
        }
        size_ = (unsigned)size;
        offset_ = 0;
    }

    fileName_ = fileName;
    mode_ = mode;
    position_ = 0;
    checksum_ = 0;

    return true;
}