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