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