Files
nearby/cpp/platform/api/input_file.h
T
Alexey Polyudov 204f76077d nearby: snapshot as of cl/296436629
Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec
2020-04-04 12:52:31 -07:00

31 lines
923 B
C++

#ifndef PLATFORM_API_INPUT_FILE_H_
#define PLATFORM_API_INPUT_FILE_H_
#include "platform/byte_array.h"
#include "platform/exception.h"
#include "platform/ptr.h"
namespace location {
namespace nearby {
// An InputFile represents a readable file on the system.
class InputFile {
public:
virtual ~InputFile() {}
// The returned ConstPtr will be owned (and destroyed) by the caller.
// When we have exhausted reading the file and no bytes remain, read will
// always return an empty ConstPtr for which isNull() is true.
virtual ExceptionOr<ConstPtr<ByteArray> > read(
std::int64_t size) = 0; // throws Exception::IO when the file cannot be
// opened or read.
virtual std::string getFilePath() const = 0;
virtual std::int64_t getTotalSize() const = 0;
virtual void close() = 0;
};
} // namespace nearby
} // namespace location
#endif // PLATFORM_API_INPUT_FILE_H_