mirror of
https://github.com/restic/restic.git
synced 2024-12-25 01:06:39 +00:00
41fee11f66
name old time/op new time/op delta PackerManager-8 247ms ± 1% 246ms ± 1% -0.43% (p=0.001 n=18+18) name old speed new speed delta PackerManager-8 213MB/s ± 1% 214MB/s ± 1% +0.43% (p=0.001 n=18+18) name old alloc/op new alloc/op delta PackerManager-8 92.2kB ± 0% 91.5kB ± 0% -0.82% (p=0.000 n=19+20) name old allocs/op new allocs/op delta PackerManager-8 1.43k ± 0% 1.41k ± 0% -1.67% (p=0.000 n=20+20)
32 lines
644 B
Go
32 lines
644 B
Go
package hashing
|
|
|
|
import (
|
|
"hash"
|
|
"io"
|
|
)
|
|
|
|
// Writer transparently hashes all data while writing it to the underlying writer.
|
|
type Writer struct {
|
|
w io.Writer
|
|
h hash.Hash
|
|
}
|
|
|
|
// NewWriter wraps the writer w and feeds all data written to the hash h.
|
|
func NewWriter(w io.Writer, h hash.Hash) *Writer {
|
|
return &Writer{
|
|
h: h,
|
|
w: w,
|
|
}
|
|
}
|
|
|
|
// Write wraps the write method of the underlying writer and also hashes all data.
|
|
func (h *Writer) Write(p []byte) (int, error) {
|
|
n, err := h.w.Write(p)
|
|
h.h.Write(p[:n])
|
|
return n, err
|
|
}
|
|
|
|
// Sum returns the hash of all data written so far.
|
|
func (h *Writer) Sum(d []byte) []byte {
|
|
return h.h.Sum(d)
|
|
}
|