Function Copy

internal/sparsefile/sparsefile.go:14–19

Copy copies a file sparsely (omitting holes) from src to dst, while recycling shared buffers.

(dst io.WriteSeeker, src io.Reader, bufSize uint64)

// Copy copies a file sparsely (omitting holes) from src to dst, while recycling
// shared buffers.
func Copy(dst io.WriteSeeker, src io.Reader, bufSize uint64) (int64, error) {
	buf := iocopy.GetBuffer()
	defer iocopy.ReleaseBuffer(buf)

	return copyBuffer(dst, src, buf[0:bufSize])
}

// Copy copies bits from src to dst, seeking past blocks of zero bits in src. These
// blocks are omitted, creating a file with holes in dst.