mirror of
https://github.com/miguelmota/cointop
synced 2024-11-06 21:20:34 +00:00
33 lines
886 B
Go
33 lines
886 B
Go
|
/*
|
||
|
Copyright 2011 The Go4 Authors
|
||
|
|
||
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
you may not use this file except in compliance with the License.
|
||
|
You may obtain a copy of the License at
|
||
|
|
||
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
||
|
Unless required by applicable law or agreed to in writing, software
|
||
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
See the License for the specific language governing permissions and
|
||
|
limitations under the License.
|
||
|
*/
|
||
|
|
||
|
package readerutil
|
||
|
|
||
|
import "io"
|
||
|
|
||
|
// CountingReader wraps a Reader, incrementing N by the number of
|
||
|
// bytes read. No locking is performed.
|
||
|
type CountingReader struct {
|
||
|
Reader io.Reader
|
||
|
N *int64
|
||
|
}
|
||
|
|
||
|
func (cr CountingReader) Read(p []byte) (n int, err error) {
|
||
|
n, err = cr.Reader.Read(p)
|
||
|
*cr.N += int64(n)
|
||
|
return
|
||
|
}
|