1package local 2 3import ( 4 "os" 5) 6 7// readerat implements io.ReaderAt in a completely stateless manner by opening 8// the referenced file for each call to ReadAt. 9type sizeReaderAt struct { 10 size int64 11 fp *os.File 12} 13 14func (ra sizeReaderAt) ReadAt(p []byte, offset int64) (int, error) { 15 return ra.fp.ReadAt(p, offset) 16} 17 18func (ra sizeReaderAt) Size() int64 { 19 return ra.size 20} 21 22func (ra sizeReaderAt) Close() error { 23 return ra.fp.Close() 24} 25