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pkg/ioutil/reader.go
40 строк
1 KB
Gyu-Ho Lee
pkg: update LICENSE header
13 май 2016, 06:48
13 май 2016, 06:48
8b77de4
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// Copyright 2015 The etcd 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 ioutil implements I/O utility functions. package ioutil import "io" // NewLimitedBufferReader returns a reader that reads from the given reader // but limits the amount of data returned to at most n bytes. func NewLimitedBufferReader(r io.Reader, n int) io.Reader { return &limitedBufferReader{ r: r, n: n, } } type limitedBufferReader struct { r io.Reader n int } func (r *limitedBufferReader) Read(p []byte) (n int, err error) { np := p if len(np) > r.n { np = np[:r.n] } return r.r.Read(np) }