// Copyright (C) 2014 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.

package main

import (
	"io"

	"github.com/juju/ratelimit"
)

type limitedReader struct {
	r      io.Reader
	bucket *ratelimit.Bucket
}

func (r *limitedReader) Read(buf []byte) (int, error) {
	n, err := r.r.Read(buf)
	if r.bucket != nil {
		r.bucket.Wait(int64(n))
	}
	return n, err
}