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package rifs
import (
"io"
)
// WriteCounter proxies write requests and maintains a counter of bytes written.
type WriteCounter struct {
w io.Writer
counter int
}
// NewWriteCounter returns a new `WriteCounter` struct wrapping a `Writer`.
func NewWriteCounter(w io.Writer) *WriteCounter {
return &WriteCounter{
w: w,
}
}
// Count returns the total number of bytes read.
func (wc *WriteCounter) Count() int {
return wc.counter
}
// Reset resets the counter to zero.
func (wc *WriteCounter) Reset() {
wc.counter = 0
}
// Write forwards a write to the underlying `Writer` while bumping the counter.
func (wc *WriteCounter) Write(b []byte) (n int, err error) {
n, err = wc.w.Write(b)
wc.counter += n
return n, err
}
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