mirror of
https://github.com/restic/restic.git
synced 2024-12-27 02:08:37 +00:00
29 lines
495 B
Go
29 lines
495 B
Go
package hashing
|
|
|
|
import (
|
|
"hash"
|
|
"io"
|
|
)
|
|
|
|
// Reader hashes all data read from the underlying reader.
|
|
type Reader struct {
|
|
r io.Reader
|
|
h hash.Hash
|
|
}
|
|
|
|
// NewReader returns a new Reader that uses the hash h.
|
|
func NewReader(r io.Reader, h hash.Hash) *Reader {
|
|
return &Reader{
|
|
h: h,
|
|
r: io.TeeReader(r, h),
|
|
}
|
|
}
|
|
|
|
func (h *Reader) Read(p []byte) (int, error) {
|
|
return h.r.Read(p)
|
|
}
|
|
|
|
// Sum returns the hash of the data read so far.
|
|
func (h *Reader) Sum(d []byte) []byte {
|
|
return h.h.Sum(d)
|
|
}
|