blob: d878ca4e656fb0f71e90cdd3d3dd0196a8afd579 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
package rifs
import (
"io"
)
// ReadCounter proxies read requests and maintains a counter of bytes read.
type ReadCounter struct {
r io.Reader
counter int
}
// NewReadCounter returns a new `ReadCounter` struct wrapping a `Reader`.
func NewReadCounter(r io.Reader) *ReadCounter {
return &ReadCounter{
r: r,
}
}
// Count returns the total number of bytes read.
func (rc *ReadCounter) Count() int {
return rc.counter
}
// Reset resets the counter to zero.
func (rc *ReadCounter) Reset() {
rc.counter = 0
}
// Read forwards a read to the underlying `Reader` while bumping the counter.
func (rc *ReadCounter) Read(b []byte) (n int, err error) {
n, err = rc.r.Read(b)
rc.counter += n
return n, err
}
|
