static bool isSnappyCompressed(const std::string &filename);
static File *createZLib(void);
static File *createSnappy(void);
static bool isSnappyCompressed(const std::string &filename);
static File *createZLib(void);
static File *createSnappy(void);
public:
File(const std::string &filename = std::string(),
File::Mode mode = File::Read);
public:
File(const std::string &filename = std::string(),
File::Mode mode = File::Read);